CN101932108B - Method and device for increasing system SRS bandwidth - Google Patents

Abstract

The embodiment of the invention discloses a method for increasing system SRS bandwidth, which comprises the following steps of adjusting terminal-level SRS bandwidth corresponding to cell-level SRS bandwidth according to received SRS bandwidth information; and allocating SRS transmission bandwidth according the adjusted maximum terminal-level allocable SRS bandwidth. By using the technical scheme of the embodiment of the invention, the bandwidth, detected by SRS, of frequency domain resources in the system is increased to improve the reliability of the selectivity dispatching of the frequency domain resources.

Description

A method and device for increasing system SRS bandwidth

technical field

The invention relates to communication technology, in particular to a method and a device for increasing the bandwidth of a system SRS (Sounding Reference Signal, listening reference signal).

Background technique

Wireless communication systems already provide wireless communication services of various types of services, such as transmission of voice, video, and data services. In a typical communication system, a base station can allocate one or more shared resources such as bandwidth and power to terminals through different wireless access technologies, and provide wireless communication services for multiple terminals. In the FDD (Frequency Division Duplex, frequency division duplex) and TDD (TDD Division duplex, time division duplex) systems of the Long Term Evolution (LTE) plan, the OFDMA (Orthogonal Frequency Division Multiplexing Access,) method is used for downlink multiplexing. In the uplink transmission process, the SC-FDMA (Single Carrier-Frequency Division Multiple Access) single-carrier frequency division multiple access method is used for data and control channel transmission.

In the existing LTE system, the base station sends an SRS configuration message to the terminal. The SRS configuration message includes cell-level SRS bandwidth configuration parameters and cell-level SRS transmission cycle parameters; the SRS configuration message also includes different terminal-level SRS bandwidth configuration parameters for each terminal. , a terminal-level frequency-domain location parameter, and a terminal-level SRS transmission period parameter.

In the existing system, due to the large difference in the SRS bandwidth at the cell level, when the SRS bandwidth is configured, the frequency selectivity of the system bandwidth cannot be accurately performed, so that this part of the resources cannot be used reasonably. Therefore, the reliability of selective scheduling of frequency domain resources reduce.

Contents of the invention

The embodiment of the present invention provides a method for increasing the SRS bandwidth of the system, so as to improve the reliability of selective scheduling of frequency domain resources.

For this reason, the embodiment of the present invention provides following technical scheme:

A method for increasing the system monitoring reference signal SRS bandwidth, comprising:

Adjusting the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth according to the received SRS bandwidth information;

The SRS transmission bandwidth is configured according to the adjusted maximum configurable SRS bandwidth at the terminal level.

A method for increasing the system monitoring reference signal SRS bandwidth, comprising:

Receiving a cell-level SRS configuration message, the cell-level SRS configuration message carrying a cell-level SRS offset value parameter; determining a starting position for sending the cell-level SRS according to the offset value parameter.

A method for increasing the system monitoring reference signal SRS bandwidth, comprising:

Obtain the cell-level SRS offset value parameter according to the value of the free physical uplink shared channel PUSCH bandwidth in the system;

Sending the cell-level SRS configuration parameters to the terminal, where the cell-level SRS configuration message carries a cell-level SRS offset value parameter.

A user equipment, comprising:

An adjustment module, configured to adjust the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth according to the received SRS bandwidth information;

A configuration module, configured to configure the SRS transmission bandwidth according to the adjusted maximum configurable SRS bandwidth at the terminal level.

A user equipment for increasing system SRS bandwidth, comprising:

A receiving module, configured to receive a cell-level SRS configuration message, where the cell-level SRS configuration message carries a cell-level SRS offset value parameter;

A processing module, configured to determine the starting position of the sending cell-level SRS according to the offset value parameter.

A base station, comprising:

An acquisition module, configured to obtain a cell-level SRS offset value parameter according to the value of the free PUSCH bandwidth in the system;

A sending module, configured to send cell-level SRS configuration parameters to the terminal, where the cell-level configuration message carries cell-level SRS offset value parameters.

It can be seen from the above technical solution that in this embodiment, the terminal-level SRS bandwidth is adjusted according to the received SRS bandwidth information, and the SRS transmission bandwidth is configured according to the adjusted terminal-level maximum configurable SRS bandwidth, which increases the SRS bandwidth that can be used in the system. The detected PUSCH frequency domain resources improve the reliability of selective scheduling of frequency domain resources.

Description of drawings

In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the drawings that need to be named in the description of the embodiments will be briefly introduced below. Apparently, the drawings in the following description are only some embodiments of the invention, and those skilled in the art can obtain other drawings according to these drawings without any creative effort.

FIG. 1 is a flowchart of a method for increasing system SRS bandwidth according to Embodiment 1 of the present invention;

FIG. 2 is a flowchart of a method for increasing the system SRS bandwidth according to Embodiment 2 of the present invention;

FIG. 3 is a schematic diagram of the mapping position of the PUCCH bandwidth of 5PRB on the physical resource on the 20MHz system bandwidth in the prior art;

FIG. 4 is a flow chart of a method for increasing the system SRS bandwidth according to Embodiment 3 of the present invention;

FIG. 5 is a flow chart of a method for increasing the system SRS bandwidth according to Embodiment 4 of the present invention;

FIG. 6 is a flow chart of another method for increasing the system SRS bandwidth according to Embodiment 4 of the present invention;

FIG. 7 is a schematic structural diagram of a user equipment according to Embodiment 5 of the present invention;

FIG. 8 is a schematic diagram of another structure of a user equipment according to Embodiment 6 of the present invention;

FIG. 9 is a schematic structural diagram of a base station according to Embodiment 7 of the present invention.

Detailed ways

As shown in Table 1, the SRS bandwidth occupied by the terminal is determined according to the row where the cell-level SRS bandwidth configuration parameter C _SRS is located and the terminal-level SRS configuration parameter B _SRS . The base station sends the cell-level SRS bandwidth configuration parameter C _SRS to all terminals in the cell. , since different bandwidths correspond to different SRS-Bandwidth bandwidth tree tables, the terminal needs to determine the bandwidth tree corresponding to the cell-level SRS system bandwidth through the C _SRS parameter and the system uplink bandwidth, and the terminal configures the parameter B through the received terminal-level SRS bandwidth _{The SRS} searches for the SRS bandwidth corresponding to the terminal in the corresponding cell-level SRS bandwidth tree.

Table 1

As shown in Table 1, taking the SRS bandwidth tree corresponding to the 20Mhz system as an example, in the 20Mhz system, the system bandwidth has a total of 100PRB for uplink service transmission. If the PUCCH bandwidth occupies 5 PRB (Physical Resource Block, physical resource block), The available bandwidth that can bear the PUSCH is 95 PRBs. Since the SRS bandwidth cannot conflict with the PUCCH transmission bandwidth, if a 96PRB cell-level SRS bandwidth is configured, the cell-level SRS bandwidth and the PUCCH bandwidth will conflict in the frequency domain, causing the base station to fail to detect correctly. Therefore, the largest cell-level SRS configuration bandwidth can be used 80 PRBs are used for uplink channel quality measurement, but due to the PUSCH configuration bandwidth, there are still 15 PRBs in the system that cannot be configured for SRS sequence transmission. As a result, 15 PRBs cannot be used to detect uplink channel quality through SRS, so that this part of resources cannot use SRS to detect uplink channel quality, and thus the reliability of frequency-domain selective scheduling is reduced.

The embodiment of the present invention provides a method for increasing the SRS bandwidth of the system, thereby increasing the PUSCH frequency domain resources that can be detected by the SRS in the system, and improving the reliability of selective scheduling of the frequency domain resources. In the following, specific examples will be used to describe in detail respectively.

Please refer to FIG. 1, a first embodiment of a method for increasing system SRS bandwidth in an embodiment of the present invention may include:

110. Adjust the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth according to the received SRS bandwidth information;

Among them, adjusting the terminal-level bandwidth includes, if the cell-level SRS bandwidth is greater than the system physical PUSCH bandwidth, reducing the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth, specifically including obtaining the terminal-level SRS bandwidth according to the node location information in the SRS frequency domain for each transmission For the node position that conflicts with the PUCCH bandwidth, the terminal-level bandwidth corresponding to the cell-level SRS bandwidth is reduced according to the node position where the conflict occurs.

Alternatively, adjusting the terminal-level bandwidth includes, if the cell-level SRS bandwidth is smaller than the system PUSCH bandwidth, increasing the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth, specifically including obtaining the node of the PUSCH spare bandwidth according to the node position information in the SRS frequency domain for each transmission Position, according to the node position of the spare bandwidth, use the increased maximum configurable SRS transmission bandwidth at the terminal level to configure the terminal-level SRS bandwidth.

120. Configure the SRS transmission bandwidth according to the adjusted maximum configurable SRS bandwidth at the terminal level.

Among them, the SRS transmission bandwidth is configured according to the adjusted maximum configurable SRS bandwidth of the terminal level, which specifically includes configuring the terminal-level SRS bandwidth by using the maximum configurable SRS transmission bandwidth of the terminal level after reduction, and further, selecting the terminal-level closest to The unreduced SRS bandwidth and the terminal-level SRS bandwidth that does not conflict with the PUCCH bandwidth configure the terminal-level SRS transmission bandwidth.

Alternatively, configuring the SRS transmission bandwidth according to the adjusted maximum configurable SRS bandwidth at the terminal level specifically includes, selecting in the SRS configuration table that is greater than the unincreased terminal-level SRS bandwidth and less than or equal to the node length and vacancy before the terminal-level SRS bandwidth is not increased. The terminal-level SRS bandwidth of the sum of PUSCH bandwidths, within the available terminal-level SRS bandwidth range, select the largest terminal-level SRS bandwidth within the terminal-level SRS bandwidth range, if all selectable terminal-level SRS bandwidths conflict with the PUCCH bandwidth, then Select the node bandwidth length before increasing the terminal-level SRS bandwidth.

It should be noted that the above steps may also include configuring the frequency domain starting position of the corresponding SRS node according to the newly selected terminal-level SRS bandwidth.

It can be seen from the above technical solution that in this embodiment, the terminal-level SRS bandwidth is adjusted according to the received SRS bandwidth information, and the SRS transmission bandwidth is configured according to the adjusted terminal-level maximum configurable SRS bandwidth, thereby increasing the SRS bandwidth that can be used in the system. The frequency domain resources detected by the SRS improve the reliability of selective scheduling of the frequency domain resources.

The following takes the cell-level SRS bandwidth greater than the system PUSCH bandwidth as a reference point to describe the above steps. As shown in FIG. 2, a second embodiment of a method for increasing the system SRS bandwidth in the embodiment of the present invention may include:

201. If the cell-level SRS bandwidth is greater than the system PUSCH bandwidth, obtain the node location where the cell-level SRS bandwidth conflicts with the PUCCH bandwidth according to the node location information in the SRS frequency domain for each transmission;

Since the SRS signal is mapped on the last OFDM symbol in the second slot of each common subframe, the terminal obtains the location of the node where the SRS bandwidth at the terminal level collides with the PUCCH bandwidth according to the node location information in the SRS frequency domain for each transmission, It specifically includes: obtaining the PRB position occupied by the PUCCH bandwidth according to the cell broadcast message, obtaining the PRB position occupied by the PUCCH bandwidth corresponding to the upper and lower sidebands of the second time slot; obtaining the starting point of the SRS frequency domain for each transmission according to the SRS length of the terminal The terminal's SRS length is obtained according to the terminal-level SRS indication issued by the base station; thus, the location where the terminal-level SRS bandwidth conflicts with the PUCCH bandwidth is obtained according to the PRB position occupied by the PUCCH bandwidth and the starting position of the SRS frequency domain node position.

202. According to the location of the conflicting node, reduce the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth, and configure the terminal-level SRS transmission bandwidth by using the reduced terminal-level maximum configurable SRS bandwidth.

For nodes without conflicts, the terminal performs corresponding SRS transmission according to the terminal-level SRS configuration parameters delivered by the base station, and the terminal determines the configuration of the terminal-level SRS bandwidth according to the location of the conflicting PRB. Correspondingly, according to the newly selected terminal-level SRS bandwidth, configure the frequency domain start position of the corresponding SRS node.

If the bandwidth of the node that collides with the PUCCH is the minimum SRS configuration in the existing configuration, the node does not transmit the SRS signal anymore.

In order to better understand the technical solution of the present invention, a 20MHz system bandwidth is taken as an example below to further describe it in detail.

The available bandwidth in the 20MHz system is 100PRB. When the PUCCH bandwidth occupies 5PRB, the available PUSCH transmission bandwidth is 95PRB. In the embodiment of the present invention, the base station configures the cell-level SRS as 96PRB. Since the cell-level SRS bandwidth is greater than the system PUSCH bandwidth, There will be an area where the PUCCH bandwidth conflicts with the cell-level SRS bandwidth, causing the base station to fail to detect correctly. In order to avoid this problem, the terminal reduces the terminal-level SRS bandwidth according to the existing SRS bandwidth configuration table, and uses the reduced terminal-level maximum configurable SRS transmission bandwidth configures the terminal-level SRS bandwidth.

为节点的频域起始位置，可以取值为0、1或2...，N_RB ^UL为上行系统带宽PRB个数，B_SRS为终端级SRS配置参数，

为终端级SRS带宽，n_b为终端级SRS节点。根据该公式可以计算出对应的节点频域起始位置分别为节点0的位置在PRB#2，在该节点SRS带宽覆盖PRB#2至PRB#25，节点1的位置在PRB#26，在该节点SRS带宽覆盖PRB#26至PRB#49，节点2的位置在PRB#50，在该节点SRS带宽覆盖PRB#50至PRB#73，节点3的位置在PRB#74，在该节点SRS带宽覆盖PRB#74至PRB#97。通过第二时隙PUCCH占用的带宽位置与对应的节点频域起始位置比较，可以判断出节点3位置的终端级SRS带宽PUCCH带宽发生冲突，所以需要在SRS带宽配置表中选取一个接近现有SRS带宽作为节点3的SRS传输，现有带宽为“24PRB”，因此，选取SRS长度为20PRB的SRS信号在节点3的使用，所选择的SRS带宽长度不会引起终端级SRS带宽与PUCCH带宽发生冲突，这时节点3的终端级SRS带宽覆盖PRB#74至PRB#93。这时SRS带宽与PUCCH带宽不发生冲突。As shown in Table 1, the base station configures the cell-level SRS as 96 PRBs, that is, notifies all terminals in the cell that C _SRS = 0, since the number of PRBs occupied by the PUCCH bandwidth is 5, as shown in Figure 3, the PUCCH bandwidth of 5 PRBs is in the 20MHz system The mapping position on the physical resource on the bandwidth, maps 3 PRBs to the upper sideband of the second time slot for transmission, and maps 2 PRBs to the lower sideband for transmission, and the bandwidth position occupied by the PUCCH in the second time slot is PRB#0, PRB#1, PRB#97, PRB#98, and PRB#99, since B _SRS =0, correspond to 20Mz system bandwidth, according to Table 1, the cell-level SRS bandwidth is 96PRB, and the terminal-level SRS parameter configuration B _SRS =2, each terminal The secondary SRS transmission bandwidth is 24PRB, and corresponds to 4 nodes performing SRS frequency hopping transmission. In the mapping of SRS in the uplink bandwidth, the corresponding frequency domain starting position of each frequency hopping node can be obtained by the formula get, among them,

is the starting position of the frequency domain of the node, which can be 0, 1 or 2..., N _RB ^UL is the number of PRBs of the uplink system bandwidth, B _SRS is the configuration parameter of the terminal-level SRS,

is the terminal-level SRS bandwidth, and n _b is the terminal-level SRS node. According to the formula, it can be calculated that the starting positions of the corresponding nodes in the frequency domain are node 0 at PRB#2, where the SRS bandwidth covers PRB#2 to PRB#25, and node 1 at PRB#26. Node SRS bandwidth covers PRB#26 to PRB#49, node 2 is located at PRB#50, at this node SRS bandwidth covers PRB#50 to PRB#73, node 3 is located at PRB#74, at this node SRS bandwidth covers PRB #74 to PRB #97. By comparing the bandwidth position occupied by the PUCCH in the second time slot with the starting position in the frequency domain of the corresponding node, it can be judged that the terminal-level SRS bandwidth PUCCH bandwidth at node 3 is in conflict, so it is necessary to select a bandwidth close to the existing one in the SRS bandwidth configuration table The SRS bandwidth is used as the SRS transmission of node 3, and the existing bandwidth is "24PRB". Therefore, when the SRS signal with an SRS length of 20PRB is selected for use on node 3, the selected SRS bandwidth length will not cause terminal-level SRS bandwidth and PUCCH bandwidth to occur. conflict, at this time, the terminal-level SRS bandwidth of node 3 covers PRB#74 to PRB#93. At this time, the SRS bandwidth does not conflict with the PUCCH bandwidth.

If the SRS bandwidth of node 0 conflicts with the PUCCH, configure the frequency domain starting position of the corresponding SRS node according to the newly selected terminal-level SRS bandwidth.

It can be seen from the above technical solution that in order to avoid the conflict between the SRS bandwidth sent by the terminal and the PUCCH bandwidth, the SRS bandwidth length at the cell level can only be 80 PRB at most for transmission, and the technical solution in this example is used to reduce the SRS bandwidth at the cell level For the corresponding terminal-level SRS bandwidth, the terminal-level SRS bandwidth is configured with the maximum configurable SRS transmission bandwidth at the terminal level after reduction, effectively increasing the cell-level SRS bandwidth to 92PRB, thereby improving the reliability of frequency-domain selective scheduling.

As shown in Table 1, the available bandwidth in the 20MHz system is 100PRB. When the PUCCH bandwidth occupies 5PRB, the available PUSCH transmission bandwidth is 95PRB. The base station configures the cell-level SRS as 96PRB, that is, it can notify all terminals in the cell that C _SRS = 1, When the terminal-level SRS configuration B _SRS = 1, the terminal-level SRS bandwidth m _{SRS, 1} is 32PRB, and the number of nodes is 3. Three frequency hopping transmissions are required to cover the cell-level SRS bandwidth of 96PRB. If the cell-level SRS bandwidth is greater than The PUSCH bandwidth of the system will conflict with the PUCCH bandwidth and the cell-level SRS bandwidth. To avoid this problem, the terminal-level SRS bandwidth needs to be reduced, and the terminal-level SRS transmission bandwidth should be configured using the reduced terminal-level maximum configurable SRS bandwidth. Since the PUCCH bandwidth occupies the bandwidth of 5 PRBs in the upper and lower sidebands respectively, the corresponding PRB numbers occupied by the PUCCH bandwidth in the second time slot are PRB#0, PRB#1, PRB#97, PRB#98, PRB #99.

计算获得，对应的节点频域起始位置分别为节点0的位置在PRB#2、在该节点SRS带宽覆盖PRB#2-PRB#33，节点1的位置在PRB#34，在该节点SRS带宽覆盖PRB#34-PRB#65，节点2的位置在PRB#66，在该节点SRS带宽覆盖PRB#66-PRB#97。根据以上判断可以发现节点2的终端级SRS带宽会与PUCCH带宽发生冲突，因此，需要在所有带宽SRS配置表格中选取一个接近现有SRS带宽，但是又不会引起终端级带宽与PUCCH带宽发生冲突的SRS带宽长度作为节点2的终端级SRS传输，在SRS带宽长度表中选取SRS长度为24PRB的SRS信号，在节点2进行SRS传输，这时节点2SRS覆盖的带宽为PRB#66-PRB#89。这时SRS带宽与PUCCH带宽不发生冲突。Since the terminal corresponds to three nodes for SRS frequency hopping transmission, the starting position of each frequency domain corresponding to each frequency hopping node in the mapping of SRS in the uplink bandwidth can be obtained through the formula. Since the terminal corresponds to three nodes for SRS frequency hopping transmission, SRS In the mapping of the uplink bandwidth, the frequency-domain starting position corresponding to each frequency-hopping node can be obtained by the formula

Calculated, the corresponding starting position of the node in the frequency domain is that the position of node 0 is in PRB#2, the SRS bandwidth of this node covers PRB#2-PRB#33, the position of node 1 is in PRB#34, and the SRS bandwidth of this node is Covering PRB#34-PRB#65, node 2 is located at PRB#66, and the SRS bandwidth of this node covers PRB#66-PRB#97. According to the above judgment, it can be found that the terminal-level SRS bandwidth of node 2 will conflict with the PUCCH bandwidth. Therefore, it is necessary to select a bandwidth close to the existing SRS bandwidth in all bandwidth SRS configuration tables, but it will not cause conflicts between the terminal-level bandwidth and the PUCCH bandwidth. The SRS bandwidth length of node 2 is used as the terminal-level SRS transmission of node 2. Select an SRS signal with an SRS length of 24PRB in the SRS bandwidth length table, and perform SRS transmission on node 2. At this time, the bandwidth covered by the SRS of node 2 is PRB#66-PRB#89 . At this time, the SRS bandwidth does not conflict with the PUCCH bandwidth.

If the SRS bandwidth of node 0 conflicts with the PUCCH, configure the frequency domain starting position of the corresponding SRS node according to the newly selected terminal-level SRS bandwidth.

However, if the bandwidth of the node that collides with the PUCCH is the minimum SRS configuration in the existing configuration, this node will not transmit the SRS signal any more.

It can be seen from the above technical solution that in order to avoid the conflict between the terminal-level bandwidth and the PUCCH bandwidth, the cell-level SRS bandwidth length can only be selected for SRS transmission of 80 PRB at most. However, the technical solution in this example is adopted to reduce the terminal-level SRS bandwidth. The terminal-level SRS bandwidth is configured by using the reduced terminal-level maximum configurable SRS transmission bandwidth, which effectively increases the cell-level SRS bandwidth to 88PRB, thereby improving the reliability of frequency-domain selective scheduling.

In the embodiment of the present invention, since the cell-level SRS bandwidth is smaller than the system PUSCH bandwidth, part of the PUSCH bandwidth cannot pass the detection of the SRS signal. In order to avoid this problem, the terminal-level SRS bandwidth is increased, and the maximum configurable SRS bandwidth after the increase is adopted. Configure the terminal-level SRS transmission bandwidth, as shown in Figure 4, a third embodiment of a method for increasing the system SRS bandwidth in the embodiment of the present invention may include:

401. If the cell-level SRS bandwidth is smaller than the system PUSCH bandwidth, obtain the node location of the PUSCH spare bandwidth according to the node location information in the SRS frequency domain for each transmission;

In step 401, the terminal obtains the PRB position occupied by the PUCCH bandwidth according to the cell broadcast message, thereby obtaining the PRB position occupied by the PUCCH bandwidth corresponding to the upper and lower sidebands of the second time slot; and the terminal obtains the SRS frequency of each transmission according to the terminal-level SRS length. The starting position of the domain, the SRS length of the terminal is obtained according to the terminal-level SRS indication issued by the base station, and the terminal obtains the SRS bandwidth and the PUCCH spare bandwidth based on the obtained PRB position occupied by the PUCCH bandwidth and the starting position of the SRS frequency domain node position.

402. According to the node position of the spare bandwidth, increase the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth, and configure the terminal-level SRS transmission bandwidth by using the increased maximum configurable terminal-level SRS bandwidth.

Wherein, step 402 may include, selecting the SRS bandwidth in the SRS bandwidth configuration table to configure the terminal-level SRS bandwidth, the terminal-level SRS bandwidth is greater than the unincreased terminal-level SRS bandwidth, and less than or equal to the node bandwidth length before the terminal-level SRS bandwidth is not increased and the sum of the free PUSCH bandwidth. Within the available terminal-level SRS bandwidth range, select the largest terminal-level SRS bandwidth within the terminal-level SRS bandwidth range; if there is no available terminal-level SRS bandwidth, select the node length before increasing the terminal-level SRS bandwidth.

If the bandwidth of the node that collides with the PUCCH is the minimum SRS configuration in the existing configuration, the node does not transmit the SRS signal anymore.

In order to better understand the technical solutions of the embodiments of the present invention, the 20 MHz system bandwidth is still taken as an example below to make a further detailed introduction.

In a 20MHz system, the available bandwidth is 100PRB. When the PUCCH bandwidth occupies 5PRB, the available PUSCH transmission bandwidth is 95PRB. All terminals = 2, so part of the PUSCH bandwidth cannot be detected through the SRS signal.

计算获得，对应的节点频域起始位置分别为节点0的位置在PRB#10，在该节点终端级SRS带宽覆盖PRB#10-PRB#49，节点1的位置在PRB#50，在该节点终端级SRS带宽覆盖PRB#50-PRB#89。通过节点PRB编号可以判断出节点0与下边带PUCCH中间空余8个SRS未能检测到PUSCH带宽，节点1与上边带PUCCH中间空7个SRS未检测到PUSCH带宽，因此，需要在SRS带宽配置表中选取一个可用终端级SRS带宽，该终端级SRS带宽大于未增加的终端级SRS带宽，并小于等于未增加终端级SRS带宽前的节点带宽长度与空余PUSCH带宽之和。When the terminal transmits SRS signals in a part of the bandwidth, frequency hopping is required if the terminal-level SRS configuration B _SRS = 1, and the terminal-level SRS bandwidth m _{SRS can be known by looking up Table 1, 1} is 40PRB, and the number of nodes is 2, then it needs to perform The two frequency hopping transmissions cover a cell-level SRS bandwidth of 80 PRB. Since the usable PUSCH transmission bandwidth is 95PRB, some PUSCH bandwidths cannot be detected by SRS signals. To avoid this problem, it is first necessary to determine the position of a node with free PUSCH bandwidth, because the PUCCH bandwidth occupies two sidebands of 5PRB each. Therefore, the PRB numbers corresponding to the PUCCH bandwidth occupied in the second time slot are PRB#0, PRB#1, PRB#97, PRB#98, PRB#99, and the PUSCH bandwidth position numbers correspond to PRB#4 to PRB# 97. Since the terminal corresponds to two nodes for SRS frequency hopping transmission, the starting position of the frequency domain corresponding to each frequency hopping node in the SRS mapping of the uplink bandwidth can be calculated by the formula

Calculated, the corresponding starting position of the node in the frequency domain is that the position of node 0 is at PRB#10, the terminal-level SRS bandwidth of this node covers PRB#10-PRB#49, the position of node 1 is at PRB#50, and the position of node 1 is at PRB#50. The terminal-level SRS bandwidth covers PRB#50-PRB#89. According to the node PRB number, it can be judged that the PUSCH bandwidth cannot be detected by the 8 SRSs between node 0 and the lower sideband PUCCH, and the PUSCH bandwidth cannot be detected by the 7 SRSs between node 1 and the upper sideband PUCCH. Select an available terminal-level SRS bandwidth in , and the terminal-level SRS bandwidth is greater than the unincreased terminal-level SRS bandwidth, and less than or equal to the sum of the node bandwidth length before the terminal-level SRS bandwidth is not increased and the spare PUSCH bandwidth.

If within the available terminal-level SRS bandwidth range, select the largest terminal-level SRS bandwidth within the terminal-level SRS bandwidth range; if all selectable terminal-level SRS bandwidths conflict with the PUCCH bandwidth, select the terminal-level SRS bandwidth without increasing the terminal-level SRS bandwidth Node bandwidth length. In the embodiment, for node 1, the existing node terminal-level SRS bandwidth length is 40, and the free PUSCH bandwidth length is 7. Since no available terminal-level SRS bandwidth can be found in the existing SRS bandwidth configuration table, no terminal-level SRS bandwidth is selected. The node bandwidth length before the SRS bandwidth, that is, the terminal-level SRS bandwidth configuration is 40. For node 0, the terminal-level SRS bandwidth length of the existing node is 40, and the free PUSCH bandwidth length is 8. The length of 48 can be selected through the SRS bandwidth configuration table. configuration. The starting position of the frequency domain of node 0 should also be moved according to the newly configured terminal-level SRS bandwidth position, that is, the position of 48PRB-40PRB=8PRB is reduced, that is, the starting position of the frequency domain of the SRS corresponding to node 0 is PRB#3.

The SRS frequency hopping transmission of two nodes can make the cell-level SRS bandwidth cover the uplink 88PRB, so as to ensure that the SRS is sent on as much bandwidth as possible, and at the same time avoid conflicts with the PUSCCH.

It can be seen from the above technical solution that in order to avoid the conflict between the SRS bandwidth sent by the terminal and the PUCCH bandwidth, the SRS bandwidth length at the cell level can only be 80 PRB for transmission. For the terminal-level SRS bandwidth corresponding to the terminal-level SRS, the maximum configurable SRS bandwidth at the terminal level is used to configure the terminal-level SRS transmission bandwidth, which effectively increases the cell-level SRS bandwidth to 88B, thereby improving the reliability of selective scheduling in the frequency domain. .

The following uses the offset value parameter to prevent the SRS bandwidth sent by the terminal from colliding with the PUCCH bandwidth as an example to describe in detail. As shown in FIG. 5, the fourth embodiment of a method for increasing the system SRS bandwidth in the embodiment of the present invention can be include:

501. Receive a cell-level SRS configuration message, where the message carries a cell-level SRS offset value parameter;

Wherein, the base station obtains the cell-level SRS offset value parameter according to the value of the free PUSCH bandwidth in the system. The base station notifies the terminal of a cell-level SRS configuration message, which carries a cell-level SRS offset value parameter, and the cell-level SRS configuration message can notify the terminal user through high-level signaling or physical layer signaling sent by the base station. In order to avoid the conflict between the SRS bandwidth sent by the terminal and the PUCCH bandwidth, the value of the cell-level SRS offset value should be smaller than the minimum value of the free PUSCH bandwidth between the existing terminal-level SRS bandwidth and the upper and lower PUCCH bandwidths, according to the free PUSCH bandwidth in the system Value to get the cell-level SRS offset value parameter.

502. Determine the starting position of the sending terminal level SRS according to the offset value parameter.

The base station needs to judge the amount of the PUSCH bandwidth not monitored by the SRS bandwidth according to the bandwidth position occupied by the PUCCH and the cell-level SRS bandwidth. In this embodiment, the 20MHz system bandwidth is still used as an example for illustration. The available resource in the 20MHz system is 100PRB. If the PUSCH transmission bandwidth is 95PRB, the cell-level SRS bandwidth is 80RB, so there are 15RB that cannot be detected by SRS. . The base station notifies the cell-level SRS offset value, so that the SRS can cover different areas in each transmission, and the SRS bandwidth can cover more PUSCH areas. Usually, after the terminal performs a complete cell-level SRS transmission, the location of the starting point of the terminal-level SRS is changed.

In order to prevent the SRS bandwidth sent by the terminal from colliding with the PUCCH bandwidth, the base station configures the cell-level SRS as 80 PRB, and therefore notifies all terminals in the cell that C _SRS =2. Therefore, part of the PUSCH bandwidth cannot be detected through the SRS signal.

In order to solve the problem in the prior art, there is 8 PRB of PUSCH bandwidth between the SRS bandwidth and the upper sideband PUCCH, and 7 PRB of PUSCH bandwidth between the SRS bandwidth and the lower sideband PUCCH. Therefore, in this embodiment, the value of the cell-level SRS offset value is 7. When the terminal-level SRS configuration B _SRS =0, the terminal-level SRS bandwidth m _SRS,0 is 80 PRB, the number of nodes is 1, and the terminal-level SRS offset value is 7. Each SRS transmission can cover 80 PRB of cell-level SRS bandwidth.

Since the 5 PRBs of the PUCCH bandwidth occupy the PRB bandwidth of the two sidebands respectively, the corresponding PRB numbers occupied by the PUCCH bandwidth in the second time slot are PRB#0PRB#1, PRB#97, PRB#98, PRB#99 , and the corresponding PUSCH bandwidth position numbers correspond to PRB#3 to PRB#96.

获得，In the mapping of SRS in the uplink bandwidth, the corresponding frequency domain starting position of each frequency hopping node can be obtained by the formula

get,

为小区级SRS偏移值，n_b为终端级SRS节点，可以取值为0、1或2...，N_RB ^UL为上行系统带宽PRB个数，

为节点的频域起始位置，B_SRS为终端级SRS配置参数，

为终端级SRS带宽。当第1次进行小区级SRS检测时，对应的节点频域起始位置为节点0对应PRB#3，由于终端的SRS传输带宽长度为80PRB。因此，这次检测可以覆盖PRB#3至PRB#82的PUSCH带宽。当终端启动第2次SRS检测，对应的节点频域起始位置为节点0对应PRB#17，由于终端SRS传输带宽长度为80PRB，因此，这次检测可以覆盖，PRB#17至PRB#96的PUSCH带宽，在此实施例中，通过更改SRS节点的起始位置，小区级SRS带宽检测，使SRS传输覆盖的PUSCH区域扩大至PRB#3至PRB#96的范围，有效地将小区级SRS带宽由80PRB增加到94PRB。

is the cell-level SRS offset value, n _b is the terminal-level SRS node, which can be 0, 1 or 2..., N _RB ^UL is the number of PRBs of the uplink system bandwidth,

is the starting position of the node in the frequency domain, B _SRS is the terminal-level SRS configuration parameter,

is the terminal-level SRS bandwidth. When the cell-level SRS detection is performed for the first time, the corresponding starting position in the frequency domain of the node is node 0 corresponding to PRB#3, since the SRS transmission bandwidth length of the terminal is 80 PRB. Therefore, this detection can cover the PUSCH bandwidth of PRB#3 to PRB#82. When the terminal starts the second SRS detection, the starting position of the corresponding node in the frequency domain is node 0 corresponding to PRB#17. Since the SRS transmission bandwidth length of the terminal is 80 PRB, this detection can cover, PRB#17 to PRB#96 PUSCH bandwidth, in this embodiment, by changing the starting position of the SRS node and cell-level SRS bandwidth detection, the PUSCH area covered by SRS transmission is expanded to the range of PRB#3 to PRB#96, effectively reducing the cell-level SRS bandwidth Increased from 80PRB to 94PRB.

In the embodiment of the present invention, the base station sends a cell-level SRS configuration message to the terminal. The cell-level SRS configuration message carries a cell-level SRS offset value parameter, and the starting position of the terminal-level SRS is determined according to the offset value parameter. The location of the cell-level SRS mapping. The offset value is used to change the starting position of the cell-level SRS system bandwidth on each cell-level SRS transmission opportunity, so that SRS can cover more of the system PUSCH bandwidth, increasing the measurable SRS bandwidth. Compared with the existing technical solution, if the area occupied by the PUCCH bandwidth is 5 PRB, in order to avoid the conflict between the SRS bandwidth sent by the terminal and the PUCCH bandwidth, the SRS bandwidth length at the cell level can only be selected for SRS transmission of 80 PRB at most, and through the present invention The solution in the embodiment can effectively increase the cell-level SRS bandwidth to 94PRB.

The following uses the offset value parameter to prevent the SRS bandwidth sent by the terminal from colliding with the PUCCH bandwidth as an example to describe in detail. As shown in FIG. 6, a fifth embodiment of a method for increasing the system SRS bandwidth in the embodiment of the present invention can be include:

601. Obtain a cell-level SRS offset value parameter according to the value of the free physical uplink shared channel PUSCH bandwidth in the system;

602. Send the cell-level SRS configuration parameter to the terminal, where the cell-level SRS configuration message carries a cell-level SRS offset value parameter.

In order to avoid this problem, in the present invention, the base station sends a cell-level SRS configuration message to the terminal. The cell-level SRS configuration message carries a cell-level SRS offset value parameter, and determines the starting position of the terminal-level SRS according to the offset value parameter. The message changes the location of the cell-level SRS mapping, and the offset value changes the starting position of the cell-level SRS system bandwidth at each cell-level SRS transmission opportunity, so that the SRS can cover more of the system PUSCH bandwidth.

As shown in FIG. 7, it is a schematic structural diagram of a user equipment according to Embodiment 6 of the present invention, which specifically includes:

The adjustment module 701 is configured to adjust the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth according to the received SRS bandwidth information;

Wherein, the adjustment module 701 includes:

An acquisition module 7011, configured to acquire the node position where the terminal-level SRS bandwidth conflicts with the physical uplink control channel PUCCH bandwidth according to the node position information in the SRS frequency domain for each transmission;

Obtaining module two 7012, configured to obtain the node position of the PUSCH vacant bandwidth according to the node position information in the SRS frequency domain for each transmission;

Adjustment module one 7013, used to reduce the bandwidth of the terminal pole when the cell-level SRS bandwidth is greater than the system PUSCH bandwidth;

The adjustment module 2 7014 is configured to increase the SRS bandwidth at the terminal level when the cell-level SRS bandwidth is smaller than the system PUSCH bandwidth.

The configuration module 702 is configured to configure the SRS transmission bandwidth according to the adjusted maximum configurable SRS bandwidth at the terminal level.

The configuration module includes:

Configuration module one 7021, configured to configure the terminal-level SRS transmission bandwidth by adopting the reduced terminal-level maximum configurable SRS bandwidth;

Configuration module 1 includes selection module 1 70211, configured to select the terminal-level SRS bandwidth that is closest to the unreduced SRS bandwidth and does not conflict with the PUCCH bandwidth in the SRS bandwidth configuration table to configure the terminal-level SRS bandwidth.

The second configuration module 7022 is used to configure the terminal-level SRS transmission bandwidth by adopting the increased terminal-level maximum configurable SRS bandwidth;

The configuration module 2 includes a selection module 2 70221, which is used to select the terminal-level SRS bandwidth in the SRS bandwidth configuration table, and the terminal-level SRS bandwidth is greater than the unincreased terminal-level SRS bandwidth, and less than or equal to the node before the terminal-level SRS bandwidth is not increased The sum of the bandwidth length and the free PUSCH bandwidth. The selection module two selects the available terminal-level SRS bandwidth range as the maximum terminal-level SRS bandwidth within the terminal-level SRS bandwidth range, and if all selectable terminal-level SRS bandwidths of the selection module two conflict with the PUCCH bandwidth, then the selection module two Select the node bandwidth length before increasing the terminal-level SRS bandwidth.

The configuration module 7023 is configured to configure the frequency domain start position of the corresponding SRS node according to the newly selected terminal-level SRS bandwidth.

It can be seen from the above technical solution that in this embodiment, the SRS bandwidth information is received, the terminal-level SRS bandwidth is adjusted, and the SRS transmission bandwidth is configured according to the adjusted terminal-level maximum configurable SRS bandwidth, thereby increasing the SRS bandwidth that can be used in the system. The detected frequency domain resources improve the reliability of selective scheduling of frequency domain resources.

As shown in FIG. 8 , it is a schematic structural diagram of a user equipment according to Embodiment 7 of the present invention, which specifically includes:

The receiving module 801 is configured to receive a cell-level SRS configuration message, where the cell-level SRS configuration message carries a cell-level SRS offset value parameter;

Wherein, the SRS offset value parameter received by the receiving module includes the cell-level SRS offset value parameter obtained by the base station according to the value of the free PUSCH bandwidth in the system.

The processing module 802 is configured to determine the starting position of the sending cell-level SRS according to the offset value parameter.

In the embodiment of the present invention, the base station sends a cell-level SRS configuration message to the terminal. The cell-level SRS configuration message carries a cell-level SRS offset value parameter, and the starting position of the terminal-level SRS is determined according to the offset value parameter. The location of the cell-level SRS mapping. The offset value is used to change the starting position of the cell-level SRS system bandwidth on each cell-level SRS transmission opportunity, so that SRS can cover more of the system PUSCH bandwidth, increasing the measurable SRS bandwidth.

As shown in FIG. 9, it is a schematic structural diagram of a base station according to Embodiment 8 of the present invention, which specifically includes:

An acquisition module 901, configured to obtain a cell-level SRS offset value parameter according to the value of the free PUSCH bandwidth in the system;

The sending module 902 is configured to send cell-level SRS configuration parameters to the terminal, where the cell-level configuration message carries cell-level SRS offset value parameters.

In the embodiment of the present invention, the base station sends a cell-level SRS configuration message to the terminal. The cell-level SRS configuration message carries a cell-level SRS offset value parameter, and the starting position of the terminal-level SRS is determined according to the offset value parameter. The location of the cell-level SRS mapping. The offset value is used to change the starting position of the cell-level SRS system bandwidth on each cell-level SRS transmission opportunity, so that SRS can cover more of the system PUSCH bandwidth, increasing the measurable SRS bandwidth.

In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

Those skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a program. The program can be stored in a computer-readable storage medium, and the storage medium can be Including: ROM, RAM, disk or CD, etc.

The method and device for increasing the system SRS bandwidth provided by the embodiment of the present invention are described above in detail. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiment is only for To help understand the method and core idea of the present invention, at the same time, those of ordinary skill in the art, according to the idea of the present invention, will have changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as a limitation of the invention.

Claims (13)

1. A method for increasing the system monitoring reference signal SRS bandwidth, characterized in that, comprising: Adjusting the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth according to the received cell-level SRS bandwidth information; Configure the SRS transmission bandwidth according to the adjusted maximum configurable SRS bandwidth at the terminal level; If the cell-level SRS bandwidth is greater than the system PUSCH bandwidth, the adjustment of the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth is specifically to reduce the size of the cell according to the position of the node where the terminal-level SRS bandwidth conflicts with the physical uplink control channel PUCCH bandwidth The terminal-level SRS bandwidth corresponding to the terminal-level SRS bandwidth; the configuration of the SRS transmission bandwidth according to the adjusted terminal-level maximum configurable SRS bandwidth is specifically to select the terminal-level closest to the unreduced SRS bandwidth in the SRS bandwidth configuration table, and The terminal-level SRS bandwidth that does not conflict with the PUCCH bandwidth configures the terminal-level SRS transmission bandwidth. 2. The method of claim 1, comprising: If the cell-level SRS bandwidth is smaller than the system PUSCH bandwidth, the adjustment includes increasing the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth, and configuring the SRS transmission bandwidth according to the adjusted terminal-level maximum configurable SRS bandwidth includes using an increase Post-terminal-level maximum configurable SRS bandwidth configures the terminal-level SRS transmission bandwidth. 3. The method according to claim 2, wherein before reducing the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth, the method further comprises: The node location where the terminal-level SRS bandwidth collides with the PUCCH bandwidth is obtained according to the node location information in the SRS frequency domain for each transmission. 4. The method according to claim 2, wherein before said increasing the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth, comprising: Obtain the node position of the PUSCH spare bandwidth according to the node position information in the SRS frequency domain for each transmission; Then, the increasing the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth includes increasing the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth according to the node position of the free bandwidth. 5. The method according to claim 4, wherein configuring the terminal-level SRS transmission bandwidth using the increased terminal-level maximum configurable SRS bandwidth comprises: Select greater than the unincreased terminal-level SRS bandwidth in the SRS bandwidth configuration table, and the selection is greater than the unincreased terminal-level SRS bandwidth and less than or equal to the sum of the node bandwidth length and the free PUSCH bandwidth before the terminal-level SRS bandwidth is not increased. 6. The method according to claim 5, wherein the selection in the SRS bandwidth configuration table that is greater than the non-increased terminal-level SRS bandwidth comprises: Within the range of available terminal-level SRS bandwidth, select the largest terminal-level SRS bandwidth within the range of the terminal-level SRS bandwidth; if all selectable terminal-level SRS bandwidths conflict with the PUCCH bandwidth, select the one before the increase of the terminal-level SRS bandwidth Node bandwidth length. 7. The method according to claim 2, further comprising: According to the newly selected terminal-level SRS bandwidth, the frequency-domain starting position of the corresponding SRS node is configured. 8. A user equipment, characterized in that, comprising: An adjustment module, configured to adjust the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth according to the received cell-level SRS bandwidth information; A configuration module, configured to configure the SRS transmission bandwidth according to the adjusted maximum configurable SRS bandwidth at the terminal level; The adjustment module includes an adjustment module 1, and the adjustment module 1 is specifically configured to, if the cell-level SRS bandwidth is greater than the system PUSCH bandwidth, reduce the bandwidth of the node according to the node position where the terminal-level SRS bandwidth conflicts with the physical uplink control channel PUCCH bandwidth. The terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth; the configuration module includes a configuration module one, and the configuration module one is specifically used to select the terminal-level SRS bandwidth that is closest to the unreduced SRS bandwidth in the SRS bandwidth configuration table, and is not related to the Configure the terminal-level SRS transmission bandwidth for the terminal-level SRS bandwidth where the PUCCH bandwidth conflicts. 9. The user equipment according to claim 8, wherein the adjustment module further comprises: The second adjustment module is configured to increase the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth when the cell-level SRS bandwidth is smaller than the system PUSCH bandwidth. 10. The user equipment according to claim 9, wherein the user equipment further comprises: Obtaining module 1, configured to obtain the node position where the terminal-level SRS bandwidth conflicts with the physical uplink control channel PUCCH bandwidth according to the node position information in the SRS frequency domain for each transmission; The acquisition module 2 is used to obtain the node position of the PUSCH vacant bandwidth according to the node position information in the SRS frequency domain for each transmission; The adjustment module 2 is specifically configured to increase the terminal-level SRS bandwidth corresponding to the cell-level SRS bandwidth according to the node position of the spare bandwidth. 11. The user equipment according to claim 10, wherein the configuration module further comprises: a configuration module 2 configured to configure a terminal-level SRS using the terminal-level maximum configurable SRS bandwidth increased by the adjustment module 2 transmission bandwidth. 12. The user equipment according to claim 11, wherein the second configuration module comprises: Selection module two, used to select the terminal-level SRS bandwidth in the SRS bandwidth configuration table, the terminal-level SRS bandwidth is greater than the unincreased terminal-level SRS bandwidth, and less than or equal to the node bandwidth length before the terminal-level SRS bandwidth is not increased and the spare PUSCH sum of bandwidth; The selection module two is specifically used to select the largest terminal-level SRS bandwidth within the range of available terminal-level SRS bandwidth, and if all selectable terminal-level SRS bandwidths of the selection module two conflict with the PUCCH bandwidth, then the selection module two selects no Node bandwidth length before increasing terminal-level SRS bandwidth. 13. The user equipment according to claim 8, wherein the configuration module further comprises: The third configuration module is configured to configure the frequency domain starting position of the corresponding SRS node according to the newly selected terminal-level SRS bandwidth.

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