JP5571250B2 - Data transmission feedback method and apparatus - Google Patents

Description

  The present invention relates to the field of wireless communication technology, and more particularly, to a data transmission feedback method and apparatus.

In a frequency division duplex (FDD ) system, a downlink (DL) frequency band and an uplink (UL, Up link) frequency band usually use the same frequency bandwidth. However, currently, uplink frequency band traffic and downlink frequency band traffic are not balanced, and DL frequency band traffic is usually heavier than UL frequency band traffic. As a result, some UL resources in the UL frequency band are relatively idle . When UL traffic is balanced with DL traffic, the UL spectrum efficiency is higher than the DL spectrum efficiency, so the use of UL subframes is lower than the use of DL subframes, and some UL resources are redundant.

  In order to effectively use redundant UL resources, part of the UL access link resource of the frequency division duplex system is DL access link resource or radio of the time division duplex (TDD) system. May be used as a backhaul link resource, thereby improving utilization of the FDD UL frequency band. However, the transmission of FDD UL data and signaling interferes with the transmission of TDD DL data and signaling in the FDD UL frequency band. In order to solve this problem, if the UL subframe of the FDD UL frequency band corresponding to the DL subframe of the FDD DL frequency band interferes with TDD DL data and signaling transmitted in the FDD UL frequency band, the data and signaling Although transmission is not performed on the UL subframe, the UL subframe would have been used for DL data transmission feedback. Therefore, this solution results in the failure to perform UL feedback on the UE DL data transmission on the corresponding UL subframe of the FDD UL frequency band.

  According to this solution, since UL feedback cannot be performed on UL subframes, data scheduling cannot be performed on DL subframes corresponding to UL subframes, thus reducing downlink resource utilization. Let

  Embodiments of the present invention provide a data transmission feedback method and apparatus to solve the problem of failing to perform data scheduling of DL subframes corresponding to UL subframes.

In one aspect, a data transmission feedback method is provided, the data transmission feedback method comprising:
If the uplink subframe corresponding to the downlink subframe is a blank frame in a frequency division duplex (FDD) downlink frequency band, the downlink subframe and the downlink subframe corresponding to the blank frame Uplink of a downlink subframe corresponding to a blank frame by the base station according to a configured hybrid automatic repeat request (HARQ) timing relationship including a mapping relationship with the uplink feedback subframe of Determining a feedback subframe;
Receiving, by the base station, on the uplink feedback subframe, data feedback sent by the UE for the downlink subframe corresponding to the blank frame;
including.

In one aspect, another data transmission feedback method is provided, the another data transmission feedback method comprising:
If the uplink subframe corresponding to the downlink subframe is a blank frame in a frequency division duplex (FDD) downlink frequency band, the downlink subframe and the downlink subframe corresponding to the blank frame A downlink subframe corresponding to a blank frame by a user terminal (UE) in response to a configured hybrid automatic repeat request (HARQ) timing relationship including a mapping relationship with the uplink feedback subframe of Determining the uplink feedback subframe of
On the uplink feedback subframe, sending data feedback on the downlink subframe corresponding to the blank frame by the UE to the base station;
including.

In one aspect, a base station is provided, the base station
If uplink subframe corresponding to the downlink subframe in a frequency division duplex (FDD) downlink frequency band is blank frame, downlink subframe corresponding to the blank frames and downlink sub Depending on the configured hybrid automatic repeat request (HARQ) timing relationship including the mapping relationship with the uplink feedback subframe of the frame, the uplink feedback of the downlink subframe corresponding to the blank frame A determination module configured to determine a subframe;
A receiving module configured to receive data feedback sent by the UE on a downlink subframe corresponding to a blank frame on the uplink feedback subframe determined by the determining module;
including.

In one aspect, a user terminal is provided, the user terminal comprising:
If the uplink subframe corresponding to the downlink subframe is a blank frame in a frequency division duplex (FDD) downlink frequency band, the downlink subframe and the downlink subframe corresponding to the blank frame Uplink feedback sub of the downlink subframe corresponding to the blank frame according to the set hybrid automatic repeat request (HARQ) timing relationship including the mapping relationship with the uplink feedback subframe of A first determination module configured to determine a frame;
A transmission module configured to transmit data feedback on the downlink subframe corresponding to the blank frame to the base station on the uplink feedback subframe determined by the first determination module;
including.

  In the embodiment of the present invention, by setting the HARQ timing relationship, when the uplink subframe corresponding to the downlink subframe is a blank frame in the FDD downlink frequency band, the HARQ timing relationship is set. In response, an uplink feedback subframe of the downlink subframe corresponding to the blank frame is determined, and downlink data feedback is performed on the determined uplink feedback subframe, and therefore UL Data scheduling may be performed for DL subframes in the DL frequency band corresponding to UL subframes in the frequency band. Therefore, utilization of downlink resources is improved. By using the technical solution of the embodiment of the present invention, it is unnecessary to solve the problem of uplink feedback with multiple retransmissions, and as a result, the quality of service of the access link is improved. .

When a part of the UL subframe of the FDD UL frequency band is used for the backhaul link, by using the embodiment of the present invention, the feedback of the FDD data transmission corresponding to the part of the UL subframe is UL subframe. It can be executed on the UL subframe except for part of the frame. Therefore, utilization of DL resources is improved, additional transmission delay can not be allowed to occur, causes no influence on the Qo S access link.

  BRIEF DESCRIPTION OF THE DRAWINGS To describe the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments. Apparently, the accompanying drawings in the following description show only some of the embodiments of the present invention, and those skilled in the art may further obtain other drawings from these accompanying drawings without requiring creative efforts. Good.

FIG. 1 is a diagram showing a scenario in which TDD functions in the FDD UL frequency band in the prior art. FIG. 2 is a diagram illustrating a scenario in which the entire frequency band of FDD is used for DL transmission in the prior art. FIG. 3 is a diagram illustrating a scenario in which a TDD system uses a part of FDD UL resources in the prior art. FIG. 4 is a diagram illustrating another scenario in which a TDD system uses a part of FDD UL resources in the prior art. FIG. 5 is a diagram illustrating another scenario in which a TDD system uses a part of FDD UL resources in the prior art. 6 is a diagram illustrating a scenario using a portion of the downlink transmission system F DD UL subframe Te prior art odor. FIG. 7 is a diagram illustrating a scenario in which a part of the FDD UL frequency band resource is used for the backhaul link in the prior art. FIG. 8 is a diagram illustrating another scenario in which part of the FDD UL frequency band resource is used for the backhaul link in the prior art. FIG. 9 is a diagram illustrating another scenario in which part of the FDD UL frequency band resource is used for the backhaul link in the prior art. FIG. 10 is a schematic flowchart of a data transmission feedback method according to an embodiment of the present invention. FIG. 11 is a schematic flowchart of another data transmission feedback method according to an embodiment of the present invention. FIG. 12 is a schematic flowchart illustrating another data transmission feedback method according to an embodiment of the present invention. FIG. 13 is a schematic flowchart of another data transmission feedback method according to an embodiment of the present invention. FIG. 14 is a schematic flowchart of another data transmission feedback method according to an embodiment of the present invention. FIG. 15 is a diagram illustrating a schematic configuration diagram of a base station according to an embodiment of the present invention. FIG. 16 is a diagram illustrating a schematic configuration diagram of a UE according to an embodiment of the present invention.

  To make the objectives, technical solutions and advantages of the present invention more comprehensible, the present invention will be further described below with reference to the accompanying drawings. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall naturally fall within the protection scope of the present invention.

  1 to 6 are access link application scenarios according to an embodiment of the present invention. The present invention uses a heterogeneous scenario as an example, and the homogeneous scenario application is the same as the heterogeneous scenario application. Heterogeneous scenarios include, without limitation, scenarios listed in the embodiments of the present invention. Embodiments of the present invention are described using macro cells and pico cells as an example.

  The macro cell access link is as follows.

  DL (from macro cell to user equipment of this macro cell (MUE, macro cell UE)): Uses the FDD DL frequency band as indicated by the white block of FDD DL in the figure.

  UL (from MUE to macrocell): Uses a portion of the subframe in the FDD UL frequency band, as indicated by the subframe marked by diagonal lines in the FDD UL frequency band in the figure.

  A picocell has two access links.

  One is an FDD access link that may or may not exist depending on the system configuration.

  DL (from pico base station to pico cell user equipment PUE (pico cell UE)): Uses the FDD DL frequency band as indicated by the white subframe of the FDD DL frequency band in the figure.

  UL (from pico base station to picocell): Uses a portion of the subframe in the FDD UL frequency band, as indicated by the subframe marked by the slash in the FDD UL frequency band in the figure.

  The other is a TDD access link that uses resources in the FDD UL.

  DL (from the pico base station to the user equipment PUE of the pico cell): uses the FDD UL frequency band as indicated by the black dotted grid subframe of the FDD UL frequency band in the figure.

  UL (from pico base station to picocell): Uses a portion of the subframe in the FDD UL frequency band, as indicated by the hatched subframe in the FDD UL frequency band in the figure.

  As shown in FIG. 7, FIG. 8, and FIG. 9, in the application scenario, part of the FDD UL frequency band resource is used for the backhaul link between the macro cell and the pico cell.

  As shown in FIG. 7, the backhaul link includes:

  DL (from macrocell to picocell): Uses a portion of the subframe in the FDD UL frequency band, as indicated by the subframe marked with diagonal lines in the FDD UL frequency band in the figure.

  UL (from picocell to macrocell): Uses a portion of the subframe in the FDD UL frequency band, as shown by the grid subframes in the FDD UL frequency band in the figure.

As shown in FIG. 8, the macrocell and a picocell, and the backhaul DL link and the FDD DL frequency band access link, when sharing the FDD DL frequency bands based on division multiplexing, on the other hand, the back of the FD D The hole UL link and the UL frequency band access link share the FDD UL frequency band based on time division multiplexing.

  Macrocell access link:

  DL (from macro cell to user equipment MUE of the macro cell): In the FDD DL frequency band, as indicated by the subframe in the white block and the subframe marked with diagonal lines in the left FDD DL frequency band in the figure As shown in FIG. 8, the subframe in the white block is used only for the FDD DL access link, and the subframe marked with diagonal lines is used as the backhaul DL resource And can be shared by FDD DL access links.

  UL (from macro cell user equipment to macro cell): using subframes in the FDD UL frequency band, as shown by the dotted subframes and grid subframes in the left FDD DL frequency band in the figure, As shown in FIG. 8, dotted subframes are also used only for FDD UL access links, and grid subframes are used as backhaul UL resources and can be shared by FDD UL access links.

  A picocell has two access links:

  FDD access link:

  DL (from the pico cell to the user equipment PUE of the pico cell): Use a part of the subframe in the FDD DL frequency band, as indicated by the white block in the FDD DL frequency band on the right side in the figure.

  UL (PUE to picocell): Uses a portion of the subframe in the FDD UL frequency band, as indicated by the dotted shadow in the right FDD UL frequency band in the figure.

  TDD access link:

  DL (from picocell to PUE): Uses a portion of the subframe in the FDD UL frequency band, as shown by the black fine grid in the right FDD UL frequency band in the figure.

  UL (PUE to picocell): Uses a portion of the subframe in the FDD UL frequency band, as indicated by the dotted shading subframe in the right FDD UL frequency band in the figure.

  Backhaul link:

  DL (from macrocell to picocell): Use a portion of the subframe in the FDD DL frequency band, as shown by the shaded subframe marked in the figure with a hatched line in the FDD DL frequency band.

  UL (from picocell to macrocell): Uses a portion of the subframe in the FDD UL frequency band as shown by the coarse grid in the left FDD UL frequency band and the black fine grid on the right side in the figure.

  In the picocell black fine grid subframe, DL transmission (from picocell to PUE) on the picocell access link and UL transmission (from picocell to macrocell) on the backhaul link are performed in the same subframe. .

  If the cell is a homogeneous cell, the mode using FDD UL resources is similar to the mode using a heterogeneous cell, and the homogeneous cell may include a macro cell and a macro cell, or a pico cell and a pico cell.

  In previous application scenarios, when a portion of the UL access link resource of the FDD system is used as the DL access link resource or radio backhaul link resource of the TDD system, the UL in the FDD UL frequency band In order to avoid interference between data and signaling transmitted on subframes and data and signaling received on DL subframes in the frequency band, transmission of data and signaling is performed in the FDD UL frequency band. Corresponding to subframes and not performed on UL subframes with interference (ie, blank frames), thus avoiding interference between two equivalent access systems using the same frequency band.

In the prior art, data scheduling is not performed for DL subframes in the DL frequency band corresponding to UL subframes that cannot be used for uplink feedback on the UL frequency band, so downlink resource utilization is significantly reduced. . Moreover, if data scheduling is performed for DL subframes in the DL frequency band corresponding to UL subframes that cannot be used for uplink feedback on the UL frequency band, the uplink feedback problem is It can be solved only by a plurality of retransmission times, and an additional feedback delay may be caused in the data transmission, and the additional feedback delay affects the quality of service (QoS) of the access link. A part of the UL subframe of the FDD UL frequency band is used for the backhaul link, and performing feedback of part of the UL subframe for data transmission of part of the FDD DL subframe corresponding to this part of the UL subframe It may lead to results which fail, or the use of DL resources is reduced, or an additional transmission delay is caused to occur, Qo S access link are affected as well.

  In order to solve the above problem, the embodiment of the present invention provides the following solution.

  The embodiment of the present invention provides a data transmission feedback method as shown in FIG.

10a1: If the uplink subframe corresponding to the downlink subframe in the frequency division duplex (FDD) downlink frequency band is a blank frame, the base station sets the configured hybrid automatic repeat request (HARQ). , according to hybrid automatic repeat request) timing relationship to determine the uplink feedback subframe corresponding to the downlink sub-frame corresponding to the blank frame, wherein, HARQ timing relationship corresponds to a blank frame Mapping relationship between the downlink subframe to be transmitted and the uplink feedback subframe corresponding to the downlink subframe.

  10a2: The base station receives data feedback sent by the UE on the uplink feedback subframe for the downlink subframe corresponding to the blank frame.

In the embodiment of the present invention, by setting a HARQ timing relationship, when an uplink subframe corresponding to a downlink subframe in the FDD downlink frequency band is a blank frame, the blank frame is supported. An uplink feedback subframe corresponding to the downlink subframe to be determined is determined according to the set HARQ timing relationship, and downlink data feedback is performed on the determined uplink feedback subframe. As such, data scheduling may be performed for DL subframes in the DL frequency band corresponding to UL subframes in the UL frequency band. Therefore, utilization of downlink resources is improved. By using the technical solution of the embodiment of the present invention, it is unnecessary to solve the uplink feedback problem with multiple retransmissions, and therefore the quality of service of the access link is improved. When a part of the UL subframe of the FDD UL frequency band is used for the backhaul link, by using the embodiment of the present invention, the feedback of the FDD data transmission corresponding to the part of the UL subframe is UL subframe. It can be executed on the UL subframe except for part of the frame. Accordingly, improved utilization of DL resources, additional transmission delay is not generated, it causes no influence on the Qo S access link.

  The embodiment of the present invention provides a data transmission feedback method as shown in FIG.

  10b1: When the uplink subframe corresponding to the downlink subframe in the frequency division duplex (FDD) downlink frequency band is a blank frame, the user terminal (UE) sets the hybrid automatic retransmission Depending on the request (HARQ) timing relationship, an uplink feedback subframe of a downlink subframe corresponding to the blank frame is determined, where the HARQ timing relationship is determined by the downlink frame corresponding to the blank frame. It includes a mapping relationship between the subframe and the uplink feedback subframe of the downlink subframe.

  10b2: The UE sends data feedback to the base station for the downlink subframe corresponding to the blank frame on the uplink feedback subframe.

In the embodiment of the present invention, by setting a HARQ timing relationship, when an uplink subframe corresponding to a downlink subframe in the FDD downlink frequency band is a blank frame, the blank frame is supported. The uplink feedback subframe of the downlink subframe to be determined is determined according to the set HARQ timing relationship, and the downlink data feedback is performed on the determined uplink feedback subframe. Thus, data scheduling can be performed for DL subframes in the DL frequency band corresponding to UL subframes in the UL frequency band. Therefore, utilization of downlink resources is improved. By using the technical solution of the embodiment of the present invention, it is unnecessary to solve the uplink feedback problem with multiple retransmissions, and therefore the quality of service of the access link is improved. When a part of the UL subframe of the FDD UL frequency band is used for the backhaul link, by using the embodiment of the present invention, the UL subframe is excluded on the UL subframe except for a part of the UL subframe. FDD data transmission feedback corresponding to a portion may be performed. Accordingly, improved utilization of DL resources, additional transmission delay is not generated, it causes no influence on the Qo S access link.

  Embodiments of the present invention provide a data transmission feedback method. In the present embodiment, the HARQ timing relationship is set, and setting the HARQ timing relationship corresponds to the blank frame in the FDD UL frequency band from the frame number of the blank frame according to the TDD HARQ timing relationship. Determining the UL feedback subframe of the DL data. The configured HARQ timing relationship may be configured by the base station or UE or protocol. The present invention does not limit the entity that sets the HARQ timing relationship. This embodiment includes the following.

Blank frame, UL subframe which can not be used in the U L feedback, for example, sub-frames not transmit UL data and signaling, TDM on UL frequency band (time division multiplexing) access link DL subframe, or, Includes backhaul subframes on the UL frequency band, or subframes that cannot be used for uplink feedback for other reasons.

  If the UL subframe of the FDD UL frequency band corresponding to the DL subframe in the FDD DL frequency band is a non-blank frame, the FDD HARQ feedback timing is used for feedback.

  1101: HARQ timing relationship is set, where the HARQ timing relationship is determined if the UL subframe of the FDD UL frequency band corresponding to the DL subframe in the FDD DL frequency band is a blank frame. Determining an uplink feedback subframe of a downlink subframe corresponding to a blank frame from the frame number according to the TDD HARQ timing relationship.

  The HARQ timing relationship set in step 1101 may be set based on an existing TDD configuration table and a TDD HARQ timing relationship table.

  Table 1 is an existing TDD configuration table, and Table 2 is an existing TDD HARQ timing relationship table. The K value of the TDD configuration is a frame offset between the downlink subframe and the uplink feedback subframe of the downlink subframe, and − is the UL subframe.

According to the FDD HARQ feedback solution in the prior art, the UL subframe of the FDD UL frequency band corresponding to the DL subframe in the FDD DL frequency band is a blank frame, eg, subframe 1 in the FDD DL frequency band. 2, 6 and 7, the DL feedback subframe UL feedback subframes are UL subframes 5 and 6 in the FDD UL frequency band, and radio subframes 0 and 1 of the next radio frame. UL subframes 5 and 6 in the FDD UL frequency band and radio subframes 0 and 1 of the next radio frame are DL subframes of TDD access links of neighboring cells (DL subframes of TDD configuration 0 are 0). interferes with 1,5 and 6), since it is set as a blank frame, these frames, U L feedback can not be used for, i.e., UL subframe in the FDD UL frequency band 5 And 6, and radio subframes 0 and 1 of the next radio frame cannot be used for UL feedback of DL data transmission.

Due to the interference avoidance relationship, UL subframes 5 and 6 in the FDD UL frequency band and radio subframes 0 and 1 of the next radio frame are DL subframes of configuration 0 in the TDD system in Table 1. 5 and 6 and radio subframes 0 and 1 of the next radio frame. The TDD configurations in Tables 3, 4 and 5 are similar to the FDD UL blank frame configurations, and the DL subframe configurations in Table 6 are similar to the blank frame configurations. For clarity of explanation, a TDD configuration is used as an example.

According to the FDD HARQ timing relationship, the uplink subframe (n + 4) corresponding to the downlink subframe (n) in the DL frequency band is used as the UL feedback subframe of the downlink subframe n. The For example, according to the FDD HARQ timing relationship, the UL feedback subframes of downlink subframes 1, 2, 6, and 7 in the FDD DL frequency band are indicated by the dotted line in FIG. 6 and radio subframes 0 and 1 of the next radio frame. However, UL subframes 5 and 6 and radio subframes 0 and 1 of the next radio frame are all blank frames and cannot be used for data feedback. From the frame number of the blank frame, the TDD HARQ timing feedback relationship in Table 2 is used, ie, the FDD UL frequency band corresponding to DL subframe n in the FDD DL frequency band corresponding to the blank frame. The UL subframe (blank frame) is n + 4, and from the blank frame, the uplink feedback subframe that is finally determined is (n + 4) + k, where k is the TDD in Table 2. K in the HARQ timing table. A new timing relationship K ′ = k + 4 is formed from the DL subframe n in the FDD DL frequency band corresponding to the blank frame to the uplink feedback subframe n + (4 + k) in the FDD UL frequency band. From DL subframe n in the FDD DL frequency band corresponding to other non-blank frames to the uplink feedback subframe in the FDD UL frequency band, the timing relationship K ′ = 4. As shown in Table 3, “−” indicates FDD timing, that is, K ′ = 4, and the other timing relationship is K ′ = k + 4. The gray part in Table 3 can be freely selected and does not have to be reflected in Table 3.

  In order to avoid interference, the UL subframe of the FDD UL frequency band corresponding to the DL subframe in the TDD configuration among the FDD UL subframes is a blank frame. In the following, as an example. Using TDD configuration 0 in Table 1, the operation of other configurations (eg, TDD configuration 1 to TDD configuration 6) is similar to the operation of configuration 0.

1102: When the UL subframe corresponding to the DL subframe in the FDD DL frequency band is a blank frame, the UL feedback subframe of the DL subframe corresponding to the blank frame is set according to the set HARQ timing relationship. Determine the position of the frame.

  The position of the blank subframe is set by the base station, and the UE may know this position by broadcast of the base station or via dedicated signaling notification.

  For example, the base station notifies the UE that the configuration of the blank frame is UL subframes 0, 1, 5, and 6 in the FDD UL frequency band.

  DL subframes 1, 2, 6 and 7 are UL subframes 5 and 6 in the FDD UL frequency band, UL subframes 0 and 1 of the next radio frame, and DL subframes of configuration 0 in the TDD system. 5 and 6 and subframes 0 and 1 of the next radio frame, and subframes 5 and 6 and the next radio frames 0 and 1 are described in the configuration notified by the base station. A blank frame. This configuration is consistent with TDD configuration 0. According to the set HARQ timing relationship, a search is performed in Table 3 according to the TDD configuration 0 and the DL subframe number in the FDD DL frequency band, and DL subframes 1, 2 in the FDD DL frequency band. , 6 and 7 respectively, the UL feedback subframe of subframe 1 is subframe 1 + 8 = 9, and the UL feedback subframe of subframe 2 is subframe 2 + 10 = 12, ie And the UL feedback subframe of subframe 6 is subframe 6 + 8 = 14, that is, the radio subframe 4 of the next radio frame, and the UL feedback subframe of subframe 7 Is Frame 7 + 10 = 17, that is, radio subframe 7 of the next radio frame is determined.

  If the UL subframe of the FDD UL frequency band corresponding to the DL subframe in the FDD DL frequency band is a non-blank frame, FDD HARQ feedback timing is used for feedback. For example, according to the FDD HARQ feedback timing sequence, DL subframes 0, 3, 4, 5, 8 and 9 in the FDD DL frequency band are UL subframes 4, 7, 8 and 9 in the FDD UL frequency band and Corresponds to radio subframes 2 and 3 of the next radio frame. UL subframes 2, 3, 4, 7, 8, and 9 in the FDD UL frequency band are uplink subframes and are non-blank frames, so that DL subframes in the FDD DL frequency band Corresponding uplink feedback may be performed.

According to the FDD HARQ timing relationship, the UL subframe of the FDD UL frequency band corresponding to the DL subframe in the FDD DL frequency band is a blank frame, eg, subframes 1, 2, 6, and 7 in the FDD DL frequency band. In some cases, according to the FDD HARQ timing relationship, the UL feedback subframe of the DL subframe includes UL subframes 5 and 6 in the FDD UL frequency band, and radio subframes 0 and 1 of the next radio subframe. It is. Due to the interference avoidance relationship, UL subframes 5 and 6 in the FDD UL frequency band and radio subframes 0 and 1 of the next radio frame are the same as DL subframes 5 and 6 of configuration 0 in the TDD system and one-to-one correspondence with the principles and radio sub-frame 0 and 1 of the radio frame is set as a blank frame, not be used in the U L feedback.

  If the FDD DL subframe number, the FDD UL subframe number, and the TDD subframe number are the same, this relationship is called direct mapping.

  When the UL feedback subframe that directly corresponds to the downlink data of DL subframe (n) in the FDD DL frequency band is a blank frame, feedback is performed according to the set HARQ timing. . From the uplink subframes directly related to the DL subframe, TDD HARQ timing is used, and the determined uplink feedback subframe of downlink data is n + k, ie, in this case HARQ The timing mapping relationship is K ′ = k.

As shown in FIG. 12, as can be seen from the above, UL subframes 5 and 6 for the FDD HARQ feedback of subframes 1, 2, 6 and 7 in the FDD DL frequency band and the radio subframe of the next radio frame. 0 and 1 are blank frames, and UL subframes directly corresponding to subframes 1 and 6 in the FDD DL frequency band are also blank frames, and all positions of the blank frames are TDD configurations. Aligned with DL time slot position in zero. In this case, UL feedback subframes of subframe 1 and 6 in the FDD DL frequency band, direct feedback parameter K '= k of DL subframes 1 and 6 in the TDD HARQ timing in TDD configuration 0 The parameters are 6 and 6, respectively. Therefore, the positions of the UL feedback subframes are subframes 1 + 6 = 7 and 6 + 6 = 12, and radio subframe 2 of the next radio frame.

  However, for DL subframes 2 and 7, UL subframes 2 and 7 that correspond directly to subframes 2 and 7 in the FDD DL frequency band according to the FDD timing feedback relationship are not blank frames. . For the downlink data feedback corresponding to the blank frame from the blank frame corresponding to the DL subframe in the FDD DL frequency band, using the set HARQ timing, according to the TDD HARQ timing. The UL subframe is used as the UL feedback subframe. The UL subframe for downlink data feedback corresponding to the DL subframe in the FDD DL frequency band is (n + 4) + k, and the TDD HARQ timing feedback relationship is used from the frame number of the blank frame. Is done. In this case, there is a new timing relationship K ′ = k + 4 from the DL subframe n in the FDD DL frequency band corresponding to the blank frame to the uplink feedback subframe n + (4 + k) in the FDD UL frequency band. It is formed.

  From the blank frame corresponding to the DL subframe in the FDD DL frequency band, according to the TDD HARQ timing, the UL subframe for downlink data feedback corresponding to the blank frame is changed to the UL feedback subframe. Where K ′ = k + 4, the new timing relationship shown in Table 4 is formed, the part marked with diagonal lines represents the TDD timing K ′ = k, and the “−” part is , FDD timing, ie, K ′ = 4, and the other timing is K ′ = k + 4. The gray part in Table 4 can be freely selected and may not be reflected in Table 4.

  As an example, when TDD configuration 0 is further used, an UL subframe of the FDD UL frequency band corresponding to the DL subframe in the TDD configuration is a blank frame among the FDD UL subframes to avoid interference. The operation of other configurations is completely the same as that of configuration 0.

  In TDD configuration 0, the DL subframes correspond to blank frames 0, 1, 5 and 6, and 1, 2, 6 and 7, respectively. In Table 4, depending on the TDD configuration 0 or blank frame configuration 0 and the DL subframe number in the FDD DL frequency band, the search is performed for DL subframe 1 in the FDD DL frequency band. 2, 6 and 7 are performed to determine the UL feedback subframe, subframe 1 UL feedback subframe is subframe 1 + 6 = 7, and subframe 2 UL feedback subframe is Subframe 2 + 10 = 12, ie radio subframe 2 of the next radio frame, and UL feedback subframe of subframe 6 is subframe 6 + 6 = 12, ie radio subframe 2 of the next radio frame , UL feedback of subframe 7 The subframe is subframe 7 + 10 = 17, that is, radio subframe 7 of the next radio frame.

  1103: According to the FDD HARQ timing relationship or direct mapping relationship, the base station performs DL data scheduling of DL subframes in the FDD DL frequency band corresponding to the blank frame.

  For example, in the first embodiment, the base station performs downlink data scheduling for downlink subframes 1, 2, 6, and 7.

  1104: According to the FDD HARQ timing relationship or direct mapping relationship, the UE receives DL data scheduled for DL subframes in the FDD DL frequency band corresponding to the blank frame.

  For example, in the first embodiment, the UE receives downlink data for downlink subframes 1, 2, 6, and 7.

  1105: According to the configured HARQ timing relationship, the UE performs downlink data feedback at the position of the UL feedback subframe of DL data corresponding to the blank frame.

  For example, in the first embodiment, the UE acquires the HARQ timing relationship table corresponding to the set HARQ timing relationship and searches the timing relationship table to thereby obtain the downlink subframes 1, 2, 6 and 7. , Uplink feedback subframes 9 and 12 (radio subframe 2 of the next radio frame), 14 (radio subframe 4 of the next radio frame), And 17 (radio subframe 7 of the next radio frame). The UE then sends uplink feedback on the uplink feedback subframe.

  1106: According to the established HARQ timing relationship, the base station receives downlink data feedback at the location of the UL feedback subframe of DL data corresponding to the blank frame.

  For example, in the first embodiment, the base station acquires the HARQ timing relationship table according to the set HARQ timing relationship, and searches the timing relationship table to obtain the downlink subframes 1, 2, 6, and 7 uplink feedback subframes, uplink feedback subframes 9 and 12 (radio subframe 2 of the next radio frame), 14 (radio subframe of the next radio frame), respectively, And 17 (radio subframe 7 of the next radio frame), the base station receives the uplink feedback on the uplink feedback subframe.

  In an embodiment of the present invention, a HARQ timing relationship is set, and this HARQ timing relationship is blank if the UL subframe of the FDD UL frequency band corresponding to the DL subframe in the FDD DL frequency band is a blank frame. -Determining the uplink feedback subframe of the downlink subframe corresponding to the blank frame from the frame number of the frame according to the TDD HARQ timing relationship; Therefore, it is unnecessary to solve the uplink feedback problem by a plurality of retransmission times, and the access link quality of service is improved. When a part of the UL subframe of the FDD UL frequency band is used for the backhaul link, by using the embodiment of the present invention, the feedback of the FDD data transmission corresponding to the part of the UL subframe is UL subframe. It can be executed on the UL subframe except for part of the frame. Therefore, the use of DL resources is improved, no additional transmission delay is generated, and the influence on the QoS of the access link is not caused.

13 and 14 show an embodiment of a data transmission feedback method according to the present invention. In the present embodiment, the HARQ timing relationship is set. By using the HARQ timing relationship, one of the X subframes in the vicinity of the blank frame n is used as an uplink feedback subframe of downlink data corresponding to the blank frame. It is selected from X subframes according to the load balancing principle. The HARQ timing relationship may be set by the base station or the UE or the protocol, and the present invention does not limit the entity that sets the HARQ timing relationship. This embodiment includes the following.

  501: HARQ timing relationship is set, and HARQ timing relationship is selected by selecting one subframe from X subframes among X subframes in the vicinity of the blank frame according to the load distribution principle. The frame is used as an uplink feedback subframe of downlink data corresponding to the blank frame.

  502: When the UL subframe corresponding to the FDD HARQ feedback timing of the DL subframe in the FDD DL frequency band is a blank frame, one subframe is selected from X subframes according to the set HARQ timing relationship. A frame is selected, and the selected subframe is used as an uplink feedback subframe for downlink data corresponding to a blank frame.

  If the UL subframe of the FDD UL frequency band corresponding to the DL subframe in the FDD DL frequency band is a non-blank frame, the FDD HARQ feedback timing is used for feedback.

If the UL subframe of the FDD UL frequency band corresponding to the DL subframe in the FDD DL frequency band is a blank frame, eg, subframes 1, 2, 6, and 7 in the FDD DL frequency band, the prior art According to the feedback solution technique in FIG. 2, UL feedback subframes of DL subframes are UL subframes 5 and 6 in the FDD UL frequency band and radio subframes 0 and 1 of the next radio frame. Because of the interference avoidance relationship, UL subframes 5 and 6 in the FDD UL frequency band and radio subframes 0 and 1 of the next radio frame are DL subframes 5 and 6 of configuration 0 in the TDD system, and one-to-one correspondence with the principles and radio sub-frame 0 and 1 of the next radio frame, is set as a blank frame, not be used in the U L feedback.

  As shown in FIGS. 13 and 14, one of the X subframes in the vicinity of the blank frame is an uplink feedback subframe of downlink data corresponding to the blank frame. Are selected from X subframes according to the load distribution principle. In this way, a new HARQ feedback timing is formed as shown in Table 5.

  The gray part in Table 5 can be freely selected and does not have to be reflected in Table 5.

  Due to the interference avoidance relationship, the blank frames are 0, 1, 5 and 6, which satisfy the configuration of the downlink subframe in TDD configuration 0. The FDD DL subframes corresponding to blank frames 0, 1, 5, and 6 are 1, 2, 6, and 7, respectively, and in Table 5, the search is for TDD configuration 0 or blank frame configuration. And the UL feedback subframes of DL subframes 6, 7, 1 and 2 in the FDD DL frequency band are determined as follows: The The UL feedback subframe of subframe 1 may be subframe 1 + 6 = 7, or subframe 1 + 7 = 8, or subframe 1 + 8 = 9, and the UL feedback subframe of subframe 2 may be subframe 2 + 5 = 7 or subframe 2 + 6 = 8 or subframe 2 + 7 = 9 and the UL feedback subframe of subframe 6 is subframe 6 + 6 = 12, ie radio subframe 2 of the next radio frame, or , Subframe 6 + 7 = 13, ie, radio subframe 3 of the next radio frame, or subframe 6 + 8 = 14, ie, radio subframe 4 of the next radio frame, and UL feedback subframe of subframe 7 Is subframe 7 + 5 = 12, ie Radio subframe 2 of radio frame, sub-frame 7 + 6 = 13, i.e., the radio sub-frame 3 of the next radio frame, and the sub-frame 7 + 7 = 14, i.e., a radio subframe 4 of the next radio frame.

  As shown in Table 5, the multiple values in the table are multiple feedback values. Since the UE can select any one of the values according to the load balancing principle to perform feedback, uplink feedback on multiple UL feedback subframes is relatively balanced . Some of the feedback values are selected from Table 5 to form a plurality of new feedback sub-tables. The method of using multiple feedback sub-tables is similar to the method of Table 5 and will not be described here one by one.

For example, for the downlink sub-frame 1, 2, 6 and 7 of the feedback sub-frame 1 is fed back to the sub-frame 7, subframe 2, in order to avoid excessive uplink feedback on the sub-frame 7 to, preferably, fed back to the sub-frame 7 Sarezu, subframe 2 may be fed back to the sub-frame 8. The same situation applies to feedback in subframes 6 and 7. Subframes 6 and 7 are preferably fed back to different uplink subframes to implement the distribution of uplink feedback, for example, subframe 6 may be fed back to subframe 12, Frame 7 may be fed back to subframe 13.

  2 and 6, the subframe transmitting downlink data in the FDD UL frequency band is not compatible with the TDD configuration. In this case, HARQ timing feedback cannot be based on TDD HARQ feedback mode.

  If the UL subframe of the FDD UL frequency band corresponding to the DL subframe in the FDD DL frequency band is a non-blank frame, FDD HARQ feedback timing is used for feedback.

If the UL subframe of the FDD UL frequency band corresponding to the DL subframe in the FDD DL frequency band is a blank frame, eg, subframes 6, 7, 8, and 9 in the FDD DL frequency band, the prior art According to the feedback resolution technique in, the UL feedback subframes of the DL subframe are UL subframes 0, 1, 2, and 3 in the FDD UL frequency band. Due to the interference avoidance relationship, UL subframes 0, 1, 2 and 3 in the FDD UL frequency band correspond to DL subframes 0, 1, 2 and 3 transmitted in TDM mode on a one-to-one basis. It is set as a blank frame, not be used for the U L feedback.

  In order to solve the above problem, according to the set HARQ timing relationship, that is, according to Table 6, one subframe is loaded from X subframes among X subframes in the vicinity of the blank frame. The selected subframe is selected according to the distribution principle, and the selected subframe is used as an uplink feedback subframe of downlink data corresponding to the blank frame. In this way, a new HARQ feedback timing is formed as shown in Table 6.

  2 and 6, when the number of DL subframes (the number of blank subframes) is 4 and the DL subframe offset is 0, the position of the blank subframe is 0, The DL subframes corresponding to FDD HARQ timing are 6, 7, 8, and 9, which are 1, 2, and 3. According to Table 6, according to the load distribution principle, the UL feedback subframe corresponding to the FDD DL subframe 6 is the radio subframe {4, 5, 6, 7, 8, 9} of the next radio frame. 6+ {8,9,10,11,12,13} = {14,15,16,17,18,19} corresponding to one of them, and UL feedback corresponding to FDD DL subframe 7 The subframe is 7+ {7,8,9,10,11,12} corresponding to any one of the radio subframes {4, 5, 6, 7, 8, 9} of the next radio frame. = {14, 15, 16, 17, 18, 19}, and the UL feedback subframe corresponding to the FDD DL subframe 8 is the radio subframe {4, 5, 6, 7, 8 of the next radio frame. , 9} 8+ {6,7,8,9,10,11} = {14,15,16,17,18,19} corresponding to one, and UL feedback corresponding to FDD DL subframe 9 The subframe is 9+ {5,6,7,8,9,10} corresponding to any one of the radio subframes {4, 5, 6, 7, 8, 9} of the next radio frame. = {14, 15, 16, 17, 18, 19}.

  As shown in Table 6, the multiple values in the table are multiple feedback values. Since the UE can select any one of the values according to the load balancing principle to perform the feedback, the uplink feedback on multiple UL feedback subframes is relatively balanced. Some of the feedback values can be selected from Table 6 and may form multiple new feedback sub-tables. The method of using multiple feedback sub-tables is similar to the method of Table 6 and will not be described here one by one.

For example, for the downlink sub-frame 6, 7, 8 and 9 of the feedback sub-frame 6 is fed back to the sub-frame 4, taking into account the feedback dispersion, subframe 7 is preferably fed back to the sub-frame 4 Instead, the subframe 7 may be fed back to the subframe 5. Similarly, subframe 8 is preferably not fed back to subframe 4 or subframe 5 to avoid excessive uplink feedback on subframe 4 or subframe 5, and subframe 8 is subframe. 6 may be fed back. Similarly, subframe 9 may be fed back to subframe 7. Certainly, according to the uplink feedback distribution principle, subframes 6, 7, 8 and 9 are {4,5,6,7} or {5,6,7,8} or {6,7,8. , 9} may be fed back to any one subset.

  As described above, depending on the uplink feedback distribution requirements, values that balance the uplink feedback subframes at different subframe positions may be selected to perform the uplink feedback.

  503: Depending on the FDD HARQ timing relationship or the direct mapping relationship, the base station performs DL data scheduling of DL subframes in the FDD DL frequency band corresponding to blank frames.

  For example, in the second embodiment, the base station performs downlink data scheduling for downlink subframes 1, 2, 6, and 7 or downlink subframes 6, 7, 8, and 9.

  504: Depending on the FDD HARQ timing relationship or direct mapping relationship, the UE receives DL data scheduled for DL subframes in the FDD DL frequency band corresponding to the blank frame.

  For example, in the second embodiment, the base station receives downlink data on downlink subframes 1, 2, 6, and 7 or downlink subframes 6, 7, 8, and 9.

  505: Depending on the configured HARQ timing relationship, the UE performs downlink data feedback at the location of the UL feedback subframe of DL data corresponding to the blank frame.

  For example, in the second embodiment, the UE acquires a HARQ timing relationship table according to the set HARQ timing relationship. The UE has the following uplink feedback subframes of downlink subframes 1, 2, 6 and 7: 7, 8, 12 (radio subframe 2 of the next radio frame), and 13 (next radio frame The table is searched to obtain the radio subframe 3). The uplink feedback subframes of downlink subframes 6, 7, 8 and 9 are {4, 5, 6, 7} or {5, 6, 7, 8} or {6, 7, 8, 9 } Is one of the subsets. The UE then sends uplink feedback on the uplink feedback subframe.

  506: Depending on the established HARQ timing relationship, the base station receives downlink data feedback at the location of the UL feedback subframe of DL data corresponding to the blank frame.

  For example, in the second embodiment, the base station acquires the HARQ timing relationship table according to the set HARQ timing relationship. The base station performs the following uplink feedback subframes of downlink subframes 1, 2, 6 and 7: 7, 8, 12 (radio subframe 2 of the next radio frame), and 13 (next radio Search the table to get the radio subframe 3) of the frame. Thus, uplink feedback subframes of downlink subframes 6, 7, 8, and 9; {4, 5, 6, 7} or {5, 6, 7, 8} or {6, 7, 8, 9} is obtained. Thereafter, the base station receives uplink feedback on the uplink feedback subframe.

  This embodiment is described by simply using an example where DL subframe transmission is continuous and the DL subframe offset is zero. If the DL subframe transmission is discontinuous and the DL subframe offset is not 0, a similar processing method is used, i.e. one of the X subframes in the vicinity of the blank frame. Are selected from the X subframes as the uplink feedback subframe of the downlink data corresponding to the blank frame according to the load distribution principle. In this way, a plurality of tables similar to Table 6 are formed and will not be described here one by one.

FIG. 15 is a schematic configuration diagram of a base station according to the first embodiment of the present invention.
If uplink subframe corresponding to the downlink subframe in a frequency division duplex FDD downlink frequency band is blank frame, downlink subframe and downlink subframe corresponding to the blank frame The uplink feedback subframe of the downlink subframe corresponding to the blank frame is determined according to the set hybrid automatic repeat request HARQ timing relationship including the mapping relationship with the uplink feedback subframe. A determination module 1501 configured to:
A receiving module 1502 configured to receive data feedback transmitted by the UE on the downlink subframe corresponding to the blank frame on the uplink feedback subframe determined by the determining module;
including.

  Specifically, the determination module is configured to perform a blank frame and a time division duplex hybrid automatic retransmission when an uplink subframe corresponding to a downlink subframe in the FDD downlink frequency band is a blank frame. Depending on the requested TDD HARQ timing relationship, the uplink feedback subframe of the downlink subframe corresponding to the blank frame is determined.

  The configured HARQ timing relationship in the decision module is reflected in the form of a table, which includes the TDD configuration number, the downlink subframe number in the downlink frequency band, and the TDD configuration number and downlink. Contains a K ′ value corresponding to the subframe number, or blank frame configuration number, and downlink subframe number in the downlink frequency band, and blank frame configuration number and downlink Contains a K ′ value corresponding to the subframe number, where K ′ is the frame offset between the downlink subframe and the uplink feedback subframe of the downlink subframe.

Determining module is specifically in the table, the blank frame configuration number corresponding to the blank frame or TDD configuration number and the subframe number n of the downlink sub-frame corresponding to the blank frame In response to both , K ′ is searched and the subframe number of the uplink feedback subframe of the downlink subframe corresponding to the blank frame is determined to be n + K ′.

  Specifically, the determination module is configured to determine that the X subframes near the blank frame n when the uplink subframe n corresponding to the downlink subframe in the FDD downlink frequency band is a blank frame. Among the subframes, one subframe is selected from the X subframes as the uplink feedback subframe of the downlink subframe corresponding to the blank frame according to the load distribution principle. Yes.

  The configured HARQ timing relationship in the decision module is reflected in the form of a table, which includes the TDD configuration number, the downlink subframe number in the downlink frequency band, and the TDD configuration number and downlink. Contains X K 'values corresponding to subframe numbers, or blank frame configuration number, and downlink subframe number and blank frame configuration number in the downlink frequency band And X K ′ values corresponding to downlink subframe numbers, where K ′ is the frame offset between the downlink subframe and the uplink feedback subframe of the downlink subframe. That.

  Specifically, the determination module includes, in the table, a blank frame configuration number corresponding to a blank frame position, or a TDD configuration number, and a subframe of a downlink subframe corresponding to the blank frame. Search for X K's according to the number n, select one K 'from the X K's according to the load balancing principle, and support blank frames according to the selected K' The subframe number of the uplink feedback subframe of the downlink subframe to be determined is n + K ′.

  The configured HARQ timing relationship in the decision module is reflected in the form of a table, which includes the TDD configuration number, the downlink subframe number in the downlink frequency band, and the TDD configuration number and downlink. The HARQ timing relationship including one K ′ value selected according to the load distribution principle from the X K ′ values corresponding to the subframe numbers is reflected in the form of a table, This table includes a blank frame configuration number, and a downlink subframe number in the downlink frequency band, and X K ′ corresponding to the blank frame configuration number and the downlink subframe number. K 'of one of the values Includes, K 'is a frame offset between the downlink subframe and the uplink feedback subframe of the downlink subframe.

Determining module is specifically in the table, the blank frame configuration number corresponding to the blank frame position, or TDD configuration number, and sub downlink subframe corresponding to the blank frame According to the frame number n, K ′ is searched, and the subframe number of the uplink feedback subframe of the downlink subframe corresponding to the blank frame is determined to be n + K ′.

In the embodiment of the present invention, by setting a HARQ timing relationship, when an uplink subframe corresponding to a downlink subframe in the FDD downlink frequency band is a blank frame, the blank frame is supported. The uplink feedback subframe of the downlink subframe to be determined is determined according to the set HARQ timing relationship, and the downlink data feedback is performed on the determined uplink feedback subframe. Thus, data scheduling can be performed for DL subframes in the DL frequency band corresponding to UL subframes in the UL frequency band. Therefore, utilization of downlink resources is improved. By using the technical solution of the embodiment of the present invention, it is unnecessary to solve the problem of uplink feedback due to multiple retransmissions, and therefore the quality of service of the access link is improved. When a part of the UL subframe of the FDD UL frequency band is used for the backhaul link, by using the embodiment of the present invention, the feedback of the FDD data transmission corresponding to the part of the UL subframe is transmitted to the UL subframe. It can be executed on the UL subframe except for part of the frame. Accordingly, improved utilization of DL resources, additional transmission delay is not generated, it causes no influence on the Qo S access link.

FIG. 16 is a schematic diagram of a user terminal according to an embodiment of the present invention.
If the uplink subframe corresponding to the downlink subframe is a blank frame in a frequency division duplex (FDD) downlink frequency band, the downlink subframe and the downlink subframe corresponding to the blank frame Uplink feedback sub of the downlink subframe corresponding to the blank frame according to the set hybrid automatic repeat request (HARQ) timing relationship including the mapping relationship with the uplink feedback subframe of A first determination module 1601 configured to determine a frame;
A transmission module 1602 configured to transmit data feedback on the downlink subframe corresponding to the blank frame to the base station on the uplink feedback subframe determined by the first determination module;
including.

  Specifically, when the uplink subframe corresponding to the downlink subframe in the FDD downlink frequency band is a blank frame, the determination module performs a blank frame and a time division duplex hybrid automatic repeat request. (TDD HARQ) is configured to determine an uplink feedback subframe of a downlink subframe corresponding to a blank frame according to a timing relationship, and the HARQ timing relationship in the determination module is reflected in the form of a table. This table includes the TDD configuration number, and the downlink subframe number in the downlink frequency band, and the K ′ value corresponding to the TDD configuration number and the downlink subframe number, or , A blank frame configuration number, and a downlink subframe number in the downlink frequency band, and a K ′ value corresponding to the blank frame configuration number and the downlink subframe number, and K ′ Is the frame offset between the downlink subframe and the uplink feedback subframe of the downlink subframe.

Determining module is specifically in the table, the blank frame configuration number corresponding to the blank frame or TDD configuration number and the subframe number n of the downlink sub-frame corresponding to the blank frame In response to both , K ′ is searched and the subframe number of the uplink feedback subframe of the downlink subframe corresponding to the blank frame is determined to be n + K ′.

  Specifically, when the uplink subframe n corresponding to the downlink subframe in the FDD downlink frequency band is a blank frame, the determination module determines X sub-frames near the blank frame n. Among the frames, one subframe is selected from X subframes as an uplink feedback subframe of a downlink subframe corresponding to a blank frame according to the load distribution principle. .

  The configured HARQ timing relationship in the decision module is reflected in the form of a table, which includes the TDD configuration number, the downlink subframe number in the downlink frequency band, and the TDD configuration number and downlink. Contains X K ′ values corresponding to subframe numbers, or blank frame configuration number, downlink subframe number in the downlink frequency band, and blank frame configuration number and Contains X K ′ values corresponding to downlink subframe numbers, where K ′ is the frame offset between the downlink subframe and the uplink feedback subframe of the downlink subframe. .

  Specifically, the determination module includes, in the table, a blank frame configuration number corresponding to a blank frame position, or a TDD configuration number, and a subframe of a downlink subframe corresponding to the blank frame. Search for X K's according to the number n, select one K 'from the X K's according to the load balancing principle, and support blank frames according to the selected K' The subframe number of the uplink feedback subframe of the downlink subframe to be determined is n + K ′.

  The configured HARQ timing relationship in the decision module is reflected in the form of a table, which includes the TDD configuration number, the downlink subframe number in the downlink frequency band, and the TDD configuration number and downlink. -One K 'value selected according to the load distribution principle from the X K' values corresponding to the subframe number, or the set HARQ timing relationship is reflected in the form of a table. The table shows the blank frame configuration number, the downlink subframe number in the downlink frequency band, and the X K ′ values corresponding to the blank frame configuration number and the downlink subframe number. K 'value of one of Wherein, K 'is a frame offset between the downlink subframe and the uplink feedback subframe of the downlink subframe.

Determining module is specifically in the table, the blank frame configuration number corresponding to the blank frame position, or TDD configuration number, and sub downlink subframe corresponding to the blank frame According to the frame number n, K ′ is searched, and the subframe number of the uplink feedback subframe of the downlink subframe corresponding to the blank frame is determined to be n + K ′.

In the embodiment of the present invention, by setting a HARQ timing relationship, when an uplink subframe corresponding to a downlink subframe in the FDD downlink frequency band is a blank frame, the blank frame is supported. The uplink feedback subframe of the downlink subframe to be determined is determined according to the set HARQ timing relationship, and the downlink data feedback is performed on the determined uplink feedback subframe. Thus, data scheduling may be performed for DL subframes in the DL frequency band corresponding to UL subframes in the UL frequency band. Therefore, utilization of downlink resources is improved. By using the technical solution of the embodiment of the present invention, it is unnecessary to solve the problem of uplink feedback due to multiple retransmissions, and therefore the quality of service of the access link is improved. When a part of the UL subframe of the FDD UL frequency band is used for the backhaul link, by using the embodiment of the present invention, the feedback of the FDD data transmission corresponding to the part of the UL subframe is transmitted to the UL subframe. It can be executed on the UL subframe except for part of the frame. Accordingly, improved utilization of DL resources, additional transmission delay is not generated, it causes no influence on the Qo S access link.

  The units described in the user equipment and base station embodiments are simply divided according to functional logic, but are not limited to such divisions as long as corresponding functions can be implemented. Furthermore, the names of functional units are merely for the purpose of distinction and are not intended to limit the protection scope of the present invention.

  Further, those skilled in the art may understand that all or part of the above-described method steps in the embodiments may be performed by a program instructing corresponding hardware. The program may be stored in a computer-readable storage medium. The storage medium may include a read only memory, a magnetic disk, or an optical disk.

  The above description is merely illustrative embodiments of the present invention, but is not intended to limit the protection scope of the present invention. Any variation or replacement found by those skilled in the art within the technical scope disclosed in the embodiments of the present invention should fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

  This application was filed with the Chinese Patent Office on September 17, 2010 and claims the priority of Chinese Patent Application No. 201010284964.5 entitled “DATA TRANSMISSION FEEDBACK METHOD AND APPARATUS”. The entirety is hereby incorporated by reference.

Claims (24)

When the uplink subframe corresponding to the downlink subframe is a blank frame in a frequency division duplex (FDD) downlink frequency band, the downlink subframe and the downlink corresponding to the blank frame The uplink corresponding to the blank frame by the base station according to a configured hybrid automatic repeat request (HARQ) timing relationship including a mapping relationship with the uplink feedback of the subframe Determining the uplink feedback subframe of a subframe;
By the base station, on the uplink feedback subframe, uplink feedback by a user equipment (UE) regarding downlink data, which is data on the downlink subframe corresponding to the blank frame, is performed. Receiving,
Only including,
The set HARQ timing relationship satisfies one of the following conditions:
If the uplink subframe of the FDD uplink frequency band corresponding to the downlink subframe in the FDD downlink frequency band is a blank frame, the uplink of the downlink subframe corresponding to the blank frame A feedback subframe is determined from the frame number of the blank frame according to a time division duplex hybrid automatic repeat request (TDD HARQ) timing relationship;
One subframe selected from X subframes in the vicinity of the blank frame according to the load balancing principle is used as an uplink feedback subframe of the downlink subframe corresponding to the blank frame And
X candidate subframes in the vicinity of the blank frame are used as uplink feedback subframes of the downlink subframe corresponding to the blank frame, where X> 1.
Data transmission feedback method . HARQ timing relationship which is pre-Symbol set is reflected in the form of a table,
The table corresponds to a TDD configuration number, a subframe number of the downlink subframe in the downlink frequency band, and the TDD configuration number and the subframe number n of the downlink subframe. Or a blank frame configuration number and a subframe number of the downlink subframe in the downlink frequency band, and the blank frame configuration number and the down A K ′ value corresponding to the subframe number of the link subframe,
K ′ is a frame offset between the downlink subframe and the uplink feedback subframe of the downlink subframe;
According to the set HARQ timing relationship, determining an uplink feedback subframe of the downlink subframe corresponding to the blank frame by a base station,
In the table, by the base station, the blank frame configuration number corresponding to the blank frame, or the sub-frame of the downlink subframe corresponding to the TDD configuration number and the blank frame. Searching for the K ′ value according to both the number n and determining that the subframe number of the uplink feedback subframe of the downlink subframe corresponding to the blank frame is n + K ′. Including,
The method of claim 1 . That HARQ timing relationships which are pre-Symbol set, X number of candidate sub-frame in the vicinity of the blank frame is used as the uplink feedback subframe of the downlink sub-frame corresponding to the blank frame Meet,
According to the set HARQ timing relationship, determining an uplink feedback subframe of the downlink subframe corresponding to the blank frame by a base station,
The X candidate subframes as the uplink feedback subframe of the downlink subframe corresponding to the blank frame by the base station according to the set HARQ timing relationship and load balancing principle Selecting one subframe from
The method of claim 1 . HARQ timing relationship which is pre-Symbol set is reflected in the form of a table,
The table corresponds to a TDD configuration number, a subframe number of the downlink subframe in the downlink frequency band, and the TDD configuration number and the subframe number of the downlink subframe. One K ′ value selected according to the load distribution principle from X K ′ values, or a blank frame configuration number and the downlink sub-band in the downlink frequency band One K selected according to the load distribution principle from the subframe number of the frame, and the X K ′ values corresponding to the blank frame configuration number and the subframe number of the downlink subframe 'Include value, K' is the downlink subframe. Wherein the over-time is a frame offset between the uplink feedback subframe of the downlink subframe,
According to the set HARQ timing relationship, determining an uplink feedback subframe of the downlink subframe corresponding to the blank frame by a base station,
In the table, by the base station, the blank frame configuration number corresponding to the blank frame position, or the TDD configuration number, and the downlink subframe corresponding to the blank frame. The K ′ value is searched according to the subframe number n, and the subframe number of the uplink feedback subframe of the downlink subframe corresponding to the blank frame is determined to be n + K ′. including,
The method of claim 1. The set HARQ timing relationship is reflected in the form of a table,
The table corresponds to a TDD configuration number, a subframe number of the downlink subframe in the downlink frequency band, and the TDD configuration number and the subframe number of the downlink subframe. Contains X K ′ values, or a blank frame configuration number, and a subframe number of the downlink subframe in the downlink frequency band, and the blank frame configuration number and Including X K ′ values corresponding to the subframe number of the downlink subframe ;
K ′ is a frame offset between the downlink subframe and the uplink feedback subframe corresponding to the downlink subframe;
According to the set HARQ timing relationship, determining an uplink feedback subframe of the downlink subframe corresponding to the blank frame by a base station,
In the table, the base station sets the blank frame configuration number corresponding to the blank frame, or the TDD configuration number, and the sub-frame of the downlink subframe corresponding to the blank frame. X K ′ values are searched according to the frame number n, one K ′ is selected from the X K ′ according to the load distribution principle, and the blank is set according to the selected K ′. · the downlink subframe the uplink feedback of subframes numbers including determining that the n + K 'that corresponds to the frame,
The method of claim 1. The uplink subframe corresponding to the downlink subframe in the FDD downlink frequency band is a blank frame.
The uplink subframe directly corresponding to the downlink subframe in the FDD downlink frequency band comprises a blank frame, or
Including, in an FDD HARQ timing relationship, an uplink subframe corresponding to the downlink subframe in the FDD downlink frequency band is a blank frame;
The method of any one of claims 1-5 . The blank frame is
Subframes that do not use uplink data and signaling for transmission, or
Access link downlink subframe on UL frequency band, or
A backhaul subframe on the UL frequency band,
The method according to any one of claims 1 to 6 . When the uplink subframe corresponding to the downlink subframe is a blank frame in a frequency division duplex (FDD) downlink frequency band, the downlink subframe and the downlink corresponding to the blank frame The user equipment (UE) corresponding to the blank frame according to a configured hybrid automatic repeat request (HARQ) timing relationship including a mapping relationship with the uplink feedback subframe of the subframe. Determining the uplink feedback subframe of a downlink subframe;
On the uplink feedback subframe, the UE sends uplink feedback to the base station regarding the downlink data of the UE that is data on the downlink subframe corresponding to the blank frame. To do
Only including,
The set HARQ timing relationship satisfies one of the following conditions:
If the uplink subframe of the FDD uplink frequency band corresponding to the downlink subframe in the FDD downlink frequency band is a blank frame, the uplink of the downlink subframe corresponding to the blank frame A feedback subframe is determined from the frame number of the blank frame according to a time division duplex hybrid automatic repeat request (TDD HARQ) timing relationship;
One subframe selected from X subframes in the vicinity of the blank frame according to the load balancing principle is used as an uplink feedback subframe of the downlink subframe corresponding to the blank frame And
X candidate subframes in the vicinity of the blank frame are used as uplink feedback subframes of the downlink subframe corresponding to the blank frame, where X> 1.
Data transmission feedback method . The set HARQ timing relationship is reflected in the form of a table,
The table corresponds to a TDD configuration number, a subframe number of the downlink subframe in the downlink frequency band, and the TDD configuration number and the subframe number of the downlink subframe. Or a blank frame configuration number and a subframe number of the downlink subframe in the downlink frequency band, and the blank frame configuration number and the downlink. A K ′ value corresponding to the subframe number of the subframe,
K ′ is a frame offset between the downlink subframe and the uplink feedback subframe of the downlink subframe;
According to the configured HARQ timing relationship, determining an uplink feedback subframe of the downlink subframe corresponding to the blank frame by the UE,
In the table, by the UE, the blank frame configuration number corresponding to the blank frame, or the TDD configuration number and the subframe number of the downlink subframe corresponding to the blank frame. searching for the K ′ value according to both n and determining that the subframe number of the uplink feedback subframe of the downlink subframe corresponding to the blank frame is n + K ′. ,
The method of claim 8 . That HARQ timing relationships which are pre-Symbol set, X number of candidate sub-frame in the vicinity of the blank frame is used as the uplink feedback subframe of the downlink sub-frame corresponding to the blank frame Meet,
According to the configured HARQ timing relationship, determining an uplink feedback subframe of the downlink subframe corresponding to the blank frame by the UE,
According to the set HARQ timing relationship and the load distribution principle, one sub-frame from the X candidate sub-frames as the uplink feedback sub-frame of the downlink sub-frame corresponding to the blank frame. Including selecting a frame,
The method of claim 8 . The set HARQ timing relationship is reflected in the form of a table,
The table corresponds to a TDD configuration number, a subframe number of the downlink subframe in the downlink frequency band, and the TDD configuration number and the subframe number of the downlink subframe. One K ′ value selected according to the load distribution principle from X K ′ values, or a blank frame configuration number and the downlink sub-band in the downlink frequency band One K selected according to the load distribution principle from the subframe number of the frame, and the X K ′ values corresponding to the blank frame configuration number and the subframe number of the downlink subframe 'Include value, K' is the downlink subframe. Ri frame offset der between the over arm and the uplink feedback subframe of the downlink sub-frame,
According to the configured HARQ timing relationship, determining an uplink feedback subframe of the downlink subframe corresponding to the blank frame by the UE,
In the table, by the UE, the blank frame configuration number corresponding to the blank frame position, or the TDD configuration number, and the sub-frame of the downlink subframe corresponding to the blank frame. According to the frame number n, the K ′ value is searched and the subframe number of the uplink feedback subframe of the downlink subframe corresponding to the blank frame is determined to be n + K ′. including,
The method of claim 8 . The set HARQ timing relationship is reflected in the form of a table,
The table corresponds to a TDD configuration number, a subframe number of the downlink subframe in the downlink frequency band, and the TDD configuration number and the subframe number of the downlink subframe. Contains X K ′ values, or a blank frame configuration number, and a subframe number of the downlink subframe in the downlink frequency band, and the blank frame configuration number and Including X K ′ values corresponding to the subframe number of the downlink subframe ;
K ′ is a frame offset between the downlink subframe and the uplink feedback subframe of the downlink subframe;
According to the configured HARQ timing relationship, determining an uplink feedback subframe of the downlink subframe corresponding to the blank frame by the UE,
In the table, by the UE, the blank frame configuration number corresponding to the blank frame position, or the TDD configuration number, and the sub-frame of the downlink subframe corresponding to the blank frame. X pieces of K ′ are searched according to the frame number n, one K ′ is selected from the X pieces of K ′ according to the load distribution principle, and the blank is set according to the selected K ′. Determining that the subframe number of the uplink feedback subframe of the downlink subframe corresponding to a frame is n + K ′;
The method of claim 8 . The uplink subframe corresponding to the FDD downlink subframe is a blank frame.
The uplink subframe directly corresponding to the downlink subframe in the FDD downlink frequency band comprises a blank frame, or
Including, in an FDD HARQ timing relationship, an uplink subframe corresponding to the downlink subframe in the FDD downlink frequency band is a blank frame;
The method according to any one of claims 8 to 12 . When an uplink subframe corresponding to a downlink subframe is a blank frame in a frequency division duplex (FDD) downlink frequency band, the downlink subframe corresponding to the blank frame and the downlink subframe The uplink of the downlink subframe corresponding to the blank frame according to a configured hybrid automatic repeat request (HARQ) timing relationship including a mapping relationship between the uplink feedback subframe of the frame A decision module configured to determine a feedback subframe;
On the uplink feedback subframe determined by the determination module, an uplink by a user equipment (UE) with respect to downlink data that is data on the downlink subframe corresponding to the blank frame A receiving module configured to receive feedback; and
Only including,
The set HARQ timing relationship satisfies one of the following conditions:
If the uplink subframe of the FDD uplink frequency band corresponding to the downlink subframe in the FDD downlink frequency band is a blank frame, the uplink of the downlink subframe corresponding to the blank frame A feedback subframe is determined from the frame number of the blank frame according to a time division duplex hybrid automatic repeat request (TDD HARQ) timing relationship;
One subframe selected from X subframes in the vicinity of the blank frame according to the load balancing principle is used as an uplink feedback subframe of the downlink subframe corresponding to the blank frame And
X candidate subframes in the vicinity of the blank frame are used as uplink feedback subframes of the downlink subframe corresponding to the blank frame, where X> 1.
Base station . The HARQ timing relationship in the decision module is reflected in the form of a table, which table includes a TDD configuration number, a subframe number of the downlink subframe in the downlink frequency band, and the TDD configuration. Or a K ′ value corresponding to the subframe number of the downlink subframe, or a blank frame configuration number and a subframe of the downlink subframe in the downlink frequency band. A frame number, and a K ′ value corresponding to the blank frame configuration number and the subframe number of the downlink subframe, wherein K ′ includes the downlink subframe and the downlink · A said frame offset between uplink feedback of subframes,
The determination module further includes: in the table, the blank frame configuration number corresponding to the blank frame, or the TDD configuration number and the downlink subframe corresponding to the blank frame. Search for K ′ according to both subframe numbers n and determine that the subframe number of the uplink feedback subframe of the downlink subframe corresponding to the blank frame is n + K ′ Being
The base station according to claim 1 4. The configured HARQ timing relationship satisfies that X candidate subframes in the vicinity of the blank frame are used as uplink feedback subframes of the downlink subframe corresponding to the blank frame. ,
The determination module further includes the X candidates as the uplink feedback subframe of the downlink subframe corresponding to the blank frame according to the set HARQ timing relationship and load balancing principle. Ru is configured to select one of the sub-frame from the sub-frame,
The base station according to claim 1 4. The configured HARQ timing relationship in the decision module is reflected in the form of a table, the table including a TDD configuration number, a downlink subframe number in the downlink frequency band, and the TDD configuration. X and K 'values corresponding to the downlink subframe number, or a blank frame configuration number, and a downlink subframe number in the downlink frequency band, and The frame includes a blank frame configuration number and X K ′ values corresponding to the downlink subframe number, where K ′ is the uplink subframe and the uplink subframe subframe number. Feedback - it is a frame offset between the sub-frame,
The determination module further includes, in the table, the blank frame configuration number corresponding to the blank frame position, or the TDD configuration number, and the downlink subframe corresponding to the blank frame. Search for X K's according to the subframe number n of the frame, select one K 'from the X K's according to the load balancing principle, and according to the selected K', Configured to determine that the subframe number of the uplink feedback subframe of the downlink subframe corresponding to the blank frame is n + K ′;
The base station according to claim 1 4. The configured HARQ timing relationship in the decision module is reflected in the form of a table, where the table includes a TDD configuration number, and a subframe number of the downlink subframe in the downlink frequency band, and Includes one K ′ value selected according to a load balancing principle from X K ′ values corresponding to the TDD configuration number and the subframe number of the downlink subframe, or blank Corresponding to a frame configuration number, a subframe number of the downlink subframe in the downlink frequency band, and a blank frame configuration number and the subframe number of the downlink subframe X pieces Including one K 'value selected according to the load balancing principle from the value, wherein K' is the downlink subframe and the uplink feedback subframe of the downlink subframe. a frame offset between,
The determination module further includes, in the table, the blank frame configuration number corresponding to the blank frame position, or the TDD configuration number, and the downlink subframe corresponding to the blank frame. The K ′ value is searched according to the subframe number n of the frame, and it is determined that the subframe number of the uplink feedback subframe of the downlink subframe corresponding to the blank frame is n + K ′. Configured to
The base station according to claim 1 4. When the uplink subframe corresponding to the downlink subframe is a blank frame in a frequency division duplex (FDD) downlink frequency band, the downlink subframe and the downlink corresponding to the blank frame The uplink of the subframe, the feedback of the downlink subframe corresponding to the blank frame according to a set hybrid automatic repeat request (HARQ) timing relationship including a mapping relationship with the subframe. A first determination module configured to determine an uplink feedback subframe;
Uplink feedback by the UE on downlink data that is data on the downlink subframe corresponding to the blank frame on the uplink feedback subframe determined by the first determination module A transmission module configured to transmit
Only including,
The set HARQ timing relationship satisfies one of the following conditions:
If the uplink subframe of the FDD uplink frequency band corresponding to the downlink subframe in the FDD downlink frequency band is a blank frame, the uplink of the downlink subframe corresponding to the blank frame A feedback subframe is determined from the frame number of the blank frame according to a time division duplex hybrid automatic repeat request (TDD HARQ) timing relationship;
One subframe selected from X subframes in the vicinity of the blank frame according to the load balancing principle is used as an uplink feedback subframe of the downlink subframe corresponding to the blank frame And
X candidate subframes in the vicinity of the blank frame are used as uplink feedback subframes of the downlink subframe corresponding to the blank frame, where X> 1.
User terminal . The HARQ timing relationship in a first determining module, is reflected in the form of a table, the table, TDD configuration number, and sub-frame number of the downlink subframes in the downlink frequency band, and the A TDD configuration number and a K ′ value corresponding to the subframe number of the downlink subframe, or a blank frame configuration number and the downlink subband in the downlink frequency band A subframe number of a frame, and a K ′ value corresponding to the blank frame configuration number and the subframe number of the downlink subframe,
K ′ is a frame offset between the downlink subframe and the uplink feedback subframe of the downlink subframe;
Wherein the first determination module further in the table, the blank frame configuration number corresponding to the blank frame or the downlink corresponding to the TDD configuration number and the blank frame The K ′ value is searched according to both subframe numbers n of subframes, and the subframe number of the uplink feedback subframe of the downlink subframe corresponding to the blank frame is n + K ′. Configured to determine that there is,
The user terminal according to claim 19 . The configured HARQ timing relationship satisfies that X candidate subframes in the vicinity of the blank frame are used as uplink feedback subframes of the downlink subframe corresponding to the blank frame. ,
Wherein the first determining module is further in response to said set HARQ timing relationships and load balancing principles, among the X-number of sub-frames in the vicinity of the blank frame n, the down corresponding to the blank frame link wherein Ru is configured to select one of the sub-frame from X number of candidate sub-frame as the uplink feedback of subframes,
The user terminal according to claim 19 . Wherein the set HARQ timing relationship in the first determining module is reflected in the form of a table, the table, the subframe of the downlink subframe in the TDD configuration number, and the downlink frequency band And a number of K ′ values corresponding to the TDD configuration number and the subframe number of the downlink subframe, or within a blank frame configuration number and the downlink frequency band Subframe number of the downlink subframe, and the blank frame configuration number and X K ′ values corresponding to the subframe number of the downlink subframe, where K ′ is The downlink A frame offset between the uplink feedback subframe of the downlink subframe and a subframe,
Wherein the first determination module further in the table, the blank frame configuration number corresponding to the blank frame position, or the down-link corresponding to the TDD configuration number and the blank frame X K ′ is searched according to both subframe numbers n of the subframe, one K ′ is selected from the X K ′ according to the load distribution principle, and the selected K ′ is selected. In response, configured to determine that the subframe number of the uplink feedback subframe of the downlink subframe corresponding to the blank frame is n + K ′.
The user terminal according to claim 19 . Wherein the set HARQ timing relationship in the first determining module is reflected in the form of a table, the table, the subframe of the downlink subframe in the TDD configuration number, and the downlink frequency band A number and a single K ′ value selected according to a load balancing principle from the TDD configuration number and the X K ′ values corresponding to the subframe number of the downlink subframe, or A blank frame configuration number, and a subframe number of the downlink subframe in the downlink frequency band, and the blank frame configuration number and the subframe number of the downlink subframe. Corresponding to One K ′ value selected according to a load distribution principle from the K ′ values, and the K ′ is the uplink feedback subframe of the downlink subframe and the downlink subframe. Frame offset between frames ,
Wherein the first determination module further in the table, the blank frame configuration number corresponding to the blank frame position, or the TDD configuration number and the down-link corresponding to the blank frame The K ′ value is searched according to both subframe numbers n of subframes, and the subframe number of the uplink feedback subframe of the downlink subframe corresponding to the blank frame is n + K ′. Configured to be determined,
The user terminal according to claim 19 . Computer readable storage medium storing a program for executing the method according to the computer in any one of claims 1-7.