KR20100044075A - A method of allocating resources to generate distributed subchannels - Google Patents

Abstract

The present invention relates to a method for allocating frequency resources in a wireless mobile communication system using a plurality of carriers. The method includes generating a resource group from some or all of frequency resources belonging to a frequency band used in a wireless mobile communication system, and using a plurality of permutation rules according to a predetermined permutation rule from data subcarriers belonging to the generated resource group. Generating four distributed logical resource units, and allocating some or all of the generated plurality of distributed logical resource units to the mobile station, wherein the predetermined permutation rule is determined in a predetermined manner.

Description

Resource allocation method for creating distributed subchannels {A METHOD OF ALLOCATING RESOURCES TO GENERATE DISTRIBUTED SUBCHANNELS}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wideband communication system, and more particularly to a subchannel generation scheme.

In the case of a wideband communication system, more effective transmission and reception techniques and applications in time, space, and frequency domains have been proposed to maximize the efficiency of limited radio resources. In particular, using a multi-carrier based orthogonal frequency division multiplexing (OFDM) scheme can reduce the complexity of the receiver in a frequency selective fading environment of a wideband channel, and also for each subcarrier. By utilizing the fact that channel characteristics are different, spectral efficiency can be maximized by performing selective scheduling in the frequency domain. This OFDM scheme can be extended to orthogonal frequency division multiple access (OFDMA), which is a method of assigning different subcarriers to multi-users, and to increase the efficiency of radio resources in the frequency domain. Be in the spotlight. Representative WirelessMAN-OFDMA standards adopting OFDMA include IEEE 802.16-2004 and IEEE 802.16e-2005 amendments (hereinafter, IEEE 802.16).

The logical frame structure of the IEEE 802.16e system includes a preamble, a frame control header (FCH), a downlink / uplink-MAP (DL / UL-MAP), as shown in FIG. It consists of a control signal section and a data burst. And, the data transmission method for each user, according to the sub-channel configuration method, PUSC (partial usage of subchannels), (O-) FUSC ((optional) -full usage of subchannels), TUSC (tile usage of subchannels), It may have different subcarrier allocation schemes such as adaptive modulation and coding (AMC), and may configure various permutation zones within one frame.

The present invention relates to a method for allocating unit resources for distributed subchannelization.

The present invention specifically relates to one or more subcarriers and clusters when generating a subchannel when generating a subchannel of a specific unit by using a radio resource defined as a distributed area as a logical or physical resource. The present invention relates to a method of distributing and defining a resource composed of a cluster or a tile.

In the case of distributed subchannels, maximization is distributed in the frequency domain to obtain frequency diversity gain, and further, randomization is applied simultaneously to equalize interference between adjacent cells / sectors. It needs to be. The present invention relates to a method of grouping allocated resources and applying various randomizations simultaneously based on this to enable distributed subchannel formation.

In addition, the present invention specifically relates to an efficient subcarrier generation method and an extended distribution for generating a distributed subchannel in consideration of a plurality of carriers in resource utilization in consideration of a reuse rate of frequency resources such as fractional frequency reuse. A unit allocation method.

According to an aspect of the present invention for solving the problems of the present invention, it is possible to provide a method for allocating frequency resources to a mobile station in a base station of a wireless mobile communication system using a plurality of carriers. The method may include generating a first resource group from some or all of frequency resources belonging to a frequency band used in the wireless mobile communication system, and in advance from data subcarriers belonging to the generated first resource group. Generating a plurality of distributed logical resource units according to the determined first permutation rule; And allocating some or all of the generated plurality of distributed logical resource units to a first mobile station using a first frequency bandwidth, wherein the predetermined first permutation rule is determined by equation (1). It is done.

[Equation 1]

k _{CL, LRU} = N _RU ({k _{CL, DLRU} + offset _{CL, GR} ) mod N _{sc, LRU} / N _{sc, CL} } + {(n _DLRU + offset _CL ) mod N _RU }

In Equation 1, the number of the distributed logical resource units and the number of resource units included in the first resource group are each N _RU , and the N _RU distributed logical resource units and the N _RU resource units are each N. _RU * N _{sc, LRU} / N _{sc, CL} is divided into clusters, wherein N _{sc, LRU} is the number of data subcarriers included in one resource unit, and N _{sc, CL} is the number of data subcarriers included in each cluster. K _{CL, LRU} is the cluster index of the cluster constituting the N _RU resource units (0 ≦ k _{CL, LRU} <N _RU * N _{sc, LRU} / N _{sc, CL} ), and the n _DLRU is Index of N _RU distributed logical resource units (0 _≦ n _DLRU <N _RU ), where k _{CL, DLRU} is the cluster index of the cluster included in each distributed logical resource unit (0 _≦ k _{CL, DLRU} <N _{sc) , LRU} / N _{sc, CL)} and, offset _CL, which of _GR is from 0 to _{N sc, LRU / N sc,} CL -1 and Predetermined value has a value of _CL and offset is a predetermined value having any one value of 0 to N _RU.

At this time, the offset _{CL, GR} and offset _CL may each be zero.

In this case, the first resource group and the second resource group may be configured of a logical resource unit used for distributed allocation of frequency resources.

In this case, the second resource group may include a guard subcarrier existing at a boundary between the plurality of carriers.

According to another aspect of the present invention, a portion of a plurality of distributed logical resource units in a base station of a wireless mobile communication system using a frequency band including a first carrier and a second carrier adjacent to each other in a frequency domain Alternatively, a resource allocation method may be provided for allocating all to a first mobile station using both the first carrier and the second carrier and a second mobile station using only the first carrier. In this method, the first carrier includes one or more guard subcarriers adjacent to the second carrier in the frequency domain. The method includes assigning the plurality of distributed logical resource units to the first mobile station and the second mobile station, and transmitting a signal through the allocated distributed logical resource units, wherein the one or more guard subcarriers Is assigned only to the first mobile station, and only the subcarriers other than the one or more guard subcarriers are allocated to the second mobile station.

In this case, the one or more resource groups may be composed of logical resource units used for distributed allocation of frequency resources.

In this case, the predetermined permutation rule may be determined by Equation 1 described above.

At this time, the offset _{CL, GR} and offset _CL may be each 0.

According to another aspect of the present invention, a method for receiving a signal at a mobile station of a wireless mobile communication system using a plurality of carriers may be provided. The method includes receiving information from a base station indicative of a logical resource unit assigned to the mobile station, and receiving a signal transmitted from the base station via the logical resource unit. In this case, the logical resource unit allocated to the mobile station is a predetermined permutation rule from data subcarriers belonging to a resource group generated from part or all of frequency resources belonging to a frequency band used in the wireless mobile communication system. It is selected from a plurality of distributed logical resource units generated by the predetermined permutation rule may be determined by the above equation (1).

According to the present invention, it is possible to effectively allocate radio resources to each mobile station and improve the performance of the system.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The detailed description set forth below in conjunction with the appended drawings is intended to explain exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced. The following detailed description includes specific details to assist in a thorough understanding of the present invention. However, those skilled in the art will appreciate that the invention may be practiced without these specific details. For example, the following description will focus on certain terms, but need not be limited to these terms and may refer to the same meaning even when referred to as any term. In addition, the same or similar components throughout the present specification will be described using the same reference numerals.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

The technique according to the invention described below can be used in various wireless communication systems. A wireless communication system for providing various communication services such as voice and packet data is provided. A base station (BS) usually refers to a fixed station that communicates with a user equipment (UE), and also refers to a node-B, a base transceiver system (BTS). , Or an access point. The UE may be fixed or mobile and may be referred to as a mobile station (MS), user terminal (UT), subscriber station (SS), or wireless device.

The present invention proposes a subchannel generation method for supporting a new system based on OFDMA (hereinafter referred to as New 802.16m) in an IEEE 802.16e system-based resource structure.

In IEEE 802.16m-08 / 003r5, which is a system description document of IEEE 802.16m, a high-level concept of defining and configuring basic parameters for subchannel generation is as follows. Is defined.

Hereinafter, the downlink physical structure described in this document will be described.

2 shows an example of a hierarchical structure of a downlink physical structure.

Each downlink subframe is divided into a plurality of frequency partitions, and each partition may consist of a set of physical resource units spanning all OFDMA symbols of that subframe. Each frequency partition may include contiguous and / or non-contiguous physical resource units. Contiguous physical resource units may be referred to as localized physical resource units, and non-contiguous physical resource units may be referred to as distributed physical resource units. Each frequency partition can be used for different purposes, such as Fractional Frequency Reuse (FFR) or Multicast and Broadcast Services (MBS). The structure shown in FIG. 2 is a downlink physical structure with two frequency partitions, where frequency partition 2 represents a downlink physical structure that includes both local and distributed resource allocation.

Hereinafter, the physical and logical resource units described in this document will be described.

A physical resource unit (PRU) is a basic physical unit used for resource allocation, which includes P _sc consecutive subcarriers and N _sym consecutive OFDMA symbols. Subframes may be divided into two types according to the number of OFDMA symbols, that is, type-1 and type-2. For type 1 subframes, preferably P _sc is 18 and N _sym is 6. Also, for a type-2 subframe, N _sym is preferably 7. The logical resource unit (LRU) is the basic logical unit for distributed and local resource allocation. One LRU may consist of P _sc * N _sym subcarriers for Type 1 and Type 2 subframes. The LRU may include a pilot used in the PRU. Thus, the number of most effective subcarriers in one LRU depends on the number of assigned pilots.

Hereinafter, a distributed resource unit described in this document will be described.

A distributed logical resource unit (DLRU) may be used to obtain frequency diversity gain. The DLRU includes a group of subcarriers scattered through distributed resource allocation in the frequency partition. The size of the DLRU is equal to the size of the PRU. That is, it consists of P _sc subcarriers and N _sym OFDMA symbols. The smallest unit that forms the DLRU is one subcarrier.

Hereinafter, a localized resource unit described in this document will be described.

Logical localized resource units (LLRUs) may be used to obtain frequency selective scheduling gains. The LLRU may include a group of subcarriers in succession through local resource allocation. The size of the LLRU is the same as the size of the PRU. That is, it consists of P _sc subcarriers and N _sym OFDMA symbols. An LLRU may be called a contiguous resource unit (CRU).

Hereinafter, subchannelization and resource mapping described in this document will be described.

First, the basic symbol structure will be described.

Divided into one sub-carrier in the OFDMA symbols are N _{g, left} of the left guard sub-carriers _{(left guard subcarriers), N g} , right of the right side guard subcarriers (right guard subcarriers), and N _used of used subcarriers (used subcarriers) (partition) do. DC subcarriers are not loaded. N _used subcarriers are divided into one or more PRUs. Each PRU includes a pilot and data subcarriers. The number of used pilot and data subcarriers is determined by the type of subframe, namely type-1 or type-2, as well as the number of MIMO modes, ranks, and multiplexed mobile stations (MSs).

Hereinafter, mapping between downlink subcarriers and resource units will be described.

3 illustrates a mapping between downlink subcarriers and resource units, in accordance with the present invention.

A mapping process from a DL (downlink) subcarrier to a resource unit is defined as follows, which is illustrated in FIG. 3.

First, first-level or outer permutation is applied to the PRUs in units of N1 and N2 PRUs. Here, N1 = 4 and N2 = 1 or 2, which value may depend on the system bandwidth. Direct mapping of external permutation can only be supported for LLRUs. Hereinafter, before the 'internal permutation' step of FIG. 3, a localized logical resource unit (LLRU) may be referred to as a contiguous resource unit (CRU), and a distributed logical resource unit (DLRU) may be referred to as a distributed resource unit (DRU). have.

Second, the reordered PRUs distribute to frequency partitions.

Third, frequency partitions are divided into CRUs (LLRUs) and / or DRUs (DLRUs) for each resource group. Sector specific permutation can be supported, and direct mapping of resources can be supported for local resources. The size of distributed / local resources can be flexibly set per sector. Adjacent sectors need not have local and distributed resources of the same configuration.

Fourth, the distributed and local groups are mapped to logical resource units (LRUs). This can be done by direct mapping of LLRUs and by "subcarrier permutation" on the DLRU. The LRU consists of the aforementioned LLRU or DLRU.

Hereinafter, subchannelization for downlink distributed resources described in this document will be described.

It is possible to define an "inner permutation" for downlink distributed resource allocation within one frequency partition. This internal permutation allows subcarriers in the DRU (DLRU) to be scattered over the entire distributed resource allocation area. The granularity of the internal permutation may be the same as the minimum unit to form one DLRU.

Assume that there are N _RU LRUs in one distribution group. The permutation sequence P for this distribution group can be given. By subchannelization for the downlink distributed resources, the subcarriers of the LRU can be distributed to all available bandwidths of the distributed resources through the procedure shown below.

1) First, the number of pilot tones in each OFDMA symbol in one PRU is represented by n _k , and the number of LRUs in distributed resources is represented by N _RU .

2) For each k-th OFDMA symbol in the subframe, first, n _k pilots are allocated in each OFDMA symbol in each PRU. Second, the number of remaining N _RU * (P _sc -n _k ) data subcarriers is renumbered in order to make subcarrier 0 to subcarrier N _RU * (P _sc -n _k ) -1. The predetermined permutation sequence P is applied to form permutated subcarriers 0 to N _RU * (P _sc -n _k ) -1. Consecutive subcarriers thus generated are grouped into pairs / clusters prior to applying a permutation to support, for example, Space Frequency Block Code (SFBC). . That is, the numbered subcarriers 0 to N _RU * (P _sc -n _k ) -1 are matched into (N _RU * (P _sc -n _k ) -1) / 2 clusters. Finally, map each set of logically contiguous (P _sc -n _k ) subcarriers to DRUs (ie, subchannels) and form a total of N _RU DRUs (DLRUs).

Hereinafter, subchannelization for downlink local resources described in this document will be described.

There may not be an internal permutation defined for downlink local resource allocation. CRUs can be mapped directly to LLRUs within each frequency partition

Hereinafter, the uplink physical structure described in this document will be described.

4 shows an example of an uplink physical structure according to the present invention.

Each uplink subframe is divided into several frequency partitions. Here each partition consists of a set of physical resource units over the total number of OFDMA symbols available in the subframe. Each frequency partition may include contiguous (local) and / or discontinuous (distributed) physical resource units. Each frequency partition can be used for various purposes, such as FFR. 4 shows an uplink physical structure in an example consisting of two FFR groups. Where FFR group 2 includes both local and distributed resource allocations.

The physical and logical resource units used for the uplink described in this document are described below.

A physical resource unit (PRU) is a basic physical unit for resource allocation including Psc consecutive subcarriers and N _sym OFDMA symbols. Psc is 18 subcarriers and N _sym represents the number of OFDMA symbols, which may vary depending on the type of subframe. The logical resource unit (LRU) is a basic logical unit for distributed and local resource allocation, and its size may be determined as Psc * N _sym for data transmission. For control channel / message transmission, the size of the LRU must be the same as the size of the data transmission, and multiple users can be allowed to share one control LRU. The LRU includes the number of pilots used in one PRU and may include control information. Thus, the actual number of data subcarriers in one LRU depends on the number of assigned pilots and the presence of a control channel.

Hereinafter, the distributed resource unit described in this document will be described.

A distributed logical resource unit (DLRU) may be used to obtain frequency diversity gain. The DLRU includes a group of subcarriers spread over distributed resource allocation. The size of the DLRU is equal to the size of the LRU for distributed allocation. The minimum unit for forming the DLRU is a tile. T different types of tiles may be defined. In this case, T = 1. Uplink tile size may be determined by 6xN _sym, wherein N is _sym is dependent on the sub-frame type.

Hereinafter, the local resource unit for the uplink described in this document will be described.

Logical localized resource units (LLRUs) may be used to obtain frequency-selective scheduling gains. The LLRU includes a group of subcarriers that are contiguous over local resource allocation. The size of the LLRU is equal to the size of the LRU for local allocation, that is, a size consisting of Psc subcarriers and N _sym OFDMA symbols.

Hereinafter, the subchannelization and resource mapping described in this document will be described.

First, the basic symbol structure will be described.

The subcarriers of one OFDMA symbol are divided into N _{g, left} guard subcarriers, N _{g, right} guard subcarriers, and N _used subcarriers. DC subcarriers are not loaded. N _used subcarriers are divided into PRUs. Each PRU includes a pilot and data subcarriers. The number of pilot and data subcarriers used may be the type of subframe, i.e., type 1 or type 2, as well as the number of MIMO modes, ranks, multiplexed mobile stations, and the type of resource allocation, i.e. distributed or local resource allocation. Determined by

Next, the mapping from the uplink subcarrier to the resource unit will be described.

5 shows a mapping process from an uplink subcarrier to a resource unit according to the present invention.

Resource mapping firstly supports CRUs (LLRUs) and DRUs (DLRUs) with Frequency Division Multiplexing (FDM), and secondly, the DRUs are spread across distributed resource allocations to obtain diversity gains. A plurality of tiles, and third, the main features of which FFR is applied to the uplink. Based on this concept, a process of mapping an uplink subcarrier to a resource unit may be defined as follows and described as shown in FIG. 5.

First, a first level or external permutation is applied to the PRUs in units of N1 and N2 PRUs. Here, N1 = 4 and N2 = 1. Direct mapping with external permutation can be supported.

Second, distribute the renumbered PRUs to frequency partitions.

Third, frequency partitions are divided into CRUs (LLRUs) and / or DRUs (DLRUs). Sector specific permutation can be supported, and direct mapping of resources can be supported for local resources. The size of distributed / local resources can be flexibly set per sector. Adjacent sectors need not have local and distributed resources of the same configuration.

Fourth, the distributed and local groups are mapped to LRUs. The mapping is done directly to the LLRU. For the DLRU, tile permutation or hopping permutation is performed to permutate or hopping tiles of the distribution group.

Next, subchannelization for uplink distributed resources will be described.

PRUs in one frequency partition are permuted by inner permutation. Local resources can be mapped directly. Tile permutation defined for uplink distributed resource allocation scatters the tiles of the DLRU over all regions allocated to the distributed resource allocation frequency band.

Two types of distributed resource allocation are used for uplink distributed subchanneling, the first is regular distributed allocation and the second is UL transmit power optimized distributed allocation. Uplink transmit power optimization distributed resources are allocated first. The remaining frequency employees are then assigned for normal variance allocation. A hopping / permutation sequence may be predefined for power optimized allocation that spreads hopping units in the frequency domain. The tiles of the DLRU are spread on the frequency band by a second-level or internal permutation defined for uplink normal distributed resource allocation. The particle size of the internal percussion is equal to the tile size for forming the DLRU.

Next, subchannelization for uplink local resources will be described.

Local subchannels include contiguous subcarriers on frequency. Internal permutation may not be defined separately for uplink local resource allocation. The resources of the 'local group' of FIG. 5 are mapped directly to the LLRUs within each frequency partition. Precoding and / or boosting applied to the data subcarrier may also be applied to the pilot subcarrier.

As mentioned above, in order to generate currently defined distributed subchannels, a plurality of permutation and resource unit settings are required. The system frequency resources are partitioned through external permutation, and additional permutation is considered for each sector specific to the divided frequency domain or divided into distributed resource groups and local resource groups through direct mapping. Afterwards, internal permutation is defined to generate the final distributed subchannel in the distributed resource group, and thus, an effective distributed subchannel is required. However, in the case of distributed subchannels, the size of the frequency-divided region is variable through FFR, and the resource allocation region for the distributed channel is also variable in order to obtain an effective scheduling gain even in the additionally divided frequency region. In order to generate distributed subchannels for such changed frequency resources, consideration of an effective resource allocation method is required to maximize frequency gain and minimize the influence of interference. In the present invention, as shown in FIGS. 3 and 5, the present invention focuses on a method of generating a final distributed logical subchannel by applying internal permutation in a specific frequency partition configured as a distributed resource group. This refers to the way of creating distributed subchannels within allocated resources, regardless of external or second-level permutation definitions, and mapping to logical subchannels and physical subcarrier (s) is generally applied by applying additional permutations. Applicable

As mentioned above, in order to generate currently defined distributed subchannels, a plurality of permutation and resource unit settings are required. Partition system frequency resources through external permutation, consider additional permutations by sector for divided frequency domains, or divide them into distributed resource groups and localized resource groups through direct mapping Set it. Afterwards, internal permutation is defined to generate the final distributed subchannel in the distributed resource group, and thus, an effective distributed subchannel is required. However, in the case of distributed subchannels, the size of the frequency-divided region is variable through FFR, and the resource allocation region for the distributed channel is also variable in order to obtain an effective scheduling gain even in the additionally divided frequency region. In order to generate distributed subchannels for such changed frequency resources, consideration of an effective resource allocation method is required to maximize frequency gain and minimize the influence of interference. In the present invention, as shown in FIGS. 3 to 5, a method for generating a final distributed logical subchannel by applying internal permutation in a specific frequency partition configured as a distributed resource group is proposed. This refers to the way in which distributed subchannels are created within allocated resources, regardless of external or second level permutation definitions, and mapping to logical subchannels and physical subcarrier (s) is generally applied by applying additional permutations. Applicable as

As described above, to generate a logical distributed subchannel at the time when localized / distributed area allocation / permutation is completed within the divided frequency resource and the frequency resource is divided for external permutation for the physical frequency resource. The same requirements must be met.

First, logical subchannels should be allocated so as to spread as much as possible within the frequency resources allocated for generating distributed subchannels. In order to maximize the frequency diversity gain, it is advantageous to spread as much as possible in frequency intervals larger than the coherence bandwidth within available frequency resources.

Second, the plurality of logical subchannels should have the same or similar frequency distribution characteristics within the assigned frequency domain. When one or more logically distributed subchannels are created, if the frequency distribution characteristics of the subchannels are different, distributed allocations of the same type, if possible, so as not to limit resource usage due to an unequal probability between the subchannels. It is advantageous to have properties.

Third, a rule for generating logical distributed subchannels should be a rule capable of generating one or more logical subchannels regardless of the size of allocated frequency resources. Various frequency reuse rates are applicable through a plurality of frequency divisions, and in order to enable flexible allocation of local / distributed regions, the size of available frequency resources for distributed subchannels is changed. In the case of the existing IEEE 802.16e, a distributed subchannel is generated through one permutation during a specific time interval, thereby using a distributed subchannel generation method that is affected only by system bandwidth or fast Fourier transform (FFT) size. However, in case of IEEE 802.16m, the local / distribution scheme is simultaneously applied during a specific time interval, and additionally, the concept of the FFR (Fractional Frequency Reuse) concept is introduced.

Fourth, it should be easy to apply randomization in the frequency and time domain of the physical subchannel / subcarrier allocation mapped in the logical subchannel. In order to randomize the influence of interference caused by a particular distributed subchannel from an adjacent cell or sector, application of a sector / cell-specific allocation method is required. To this end, a structure that is easy to apply randomization when generating distributed subchannels is required.

Fifth, the same or similar distributed subchannel generation scheme should be applicable to the configuration of various frequency resource basic units. In the case of frequency resource allocation for distributed subchannels, the resource unit in the uplink and downlink can be changed. For example, in the case of downlink, the subcarrier unit may be changed, and in case of the uplink, the subcarrier may be changed into a bundle unit of a plurality of consecutive subcarriers. In consideration of this, it is possible to reduce the complexity of the UE implementation through the integrated distributed subchannel generation method, and to maximize the efficiency of resource utilization and reduce the signaling overhead by allocating various resource units.

Sixth, a resource allocation rule structure should be established to enable iterative application of internal permutation. In the case of using a terminal using a plurality of carriers at the same time, or additionally using a portion of the guard carrier (guard carrier), and further, if you want to create a distributed subchannel for a plurality of frequency partitions, within a single carrier It is required to additionally apply a subchannel generation method which is limitedly applied to the distributed channel, or to create a distributed subchannel that effectively accommodates arbitrary frequency resources.

Additional parameters can be defined to meet these requirements. At this time, when N _RU DRUs (DLRUs) are given to one distributed resource group, it is necessary to assume that allocated resources are allocated to N _RU DRUs (DLRUs) for distributed subchannelization. The defined parameters are as follows.

1. Cluster (or pair, tile, subcarrier): This is the minimum resource unit for the DRU (DLRU) configuration, the subframe level or one for N _{sc, CL} = 1,2, ... N _{sc, CL} consecutive physical subcarriers in a symbol are represented. For example, at the symbol level for DL downlink space frequency block code (SFBC) allocation, N _{sc, CL} is two consecutive subcarriers. Alternatively, N _{sc, CL} = 6 in N _sym OFDMA symbols for uplink allocation, where N _sym is the number of symbols in a certain type of subframe.

2. Cluster group: A collection of logically contiguous clusters of equal numbers of clusters.

3. k _{CL, LRU} : A cluster (or subcarrier, tile, etc.) index in N _RU DRUs (DLRUs) in one distributed resource group.

4. k _CL : Index of cluster (or subcarrier, tile, etc.) in one cluster group.

5. k _{CL, DLRU} : Index of the cluster (or subcarrier, tile, etc.) in one DRU (DLRU) for subchannelization.

6. n _LRU : LRU instances of N _RU LRUs within a distributed resource group.

7. _{CL, GR} : Cluster (or sub-optograph, tile, etc.) group index within a group-wise distributed resource group.

8. n _DLRU : Index of the DRU (DLRU) in subchannelization.

9. N _{sc, LRU} : The number of subcarriers forming one LRU (excluding the number of pilots, if necessary).

10. N _{CL, GR} : Number of clusters forming one cluster group.

11. n _k : Number of pilots in one PRU in the k th OFMDA symbol.

According to the present invention, a method of generating N _RU DRUs (DLRUs) by using the above defined parameters may be classified into the following forms.

First, an internal permutation scheme for generating DRUs (DLRUs) using available clusters.

Second, DRU (DLRU) generation method using randomization of cluster allocation.

Third, variable frequency resource allocation through iterative internal permutation.

The three contents are described in the following order.

Specific operation principle and configuration method of the present invention are as follows.

<Internal Permutation for DLRU Generation Using Available Clusters>

First, internal permutation for DLRU generation using an available cluster according to the present invention will be described. Three levels of index numbering are required for generation of distributed subchannels. The first is to number the clusters within a given distributed resource group, the second is to renumber the cluster group and the corresponding cluster index per one cluster group, and the third is to classify the DLRUs and corresponding clusters within one DLRU. To number. It demonstrates in detail in the following order.

First, a method of numbering clusters within a given distributed resource group will be described.

Figure 6 illustrates a method for numbering clusters within a given distributed resource group, in accordance with the present invention.

In order to configure a DLRU for N _RU DRUs (DLRUs) given to one distributed resource group, definitions of pilots and data subcarriers within individual LRUs are required.

In the case of the distributed subchannel, since the pilot is used as a common pilot, it does not need to be allocated for a specific terminal or subchannel. Accordingly, in the case of an LRU consisting of Psc (eg, Psc = 18) subcarriers in an OFDMA symbol for subcarrier generation for data allocation, cluster numbering and cluster numbering in a set of remaining subcarriers except for a pilot subcarrier according to each OFDM symbol Allocation is required. However, in the case of uplink allocation, since the basic unit is to consider tile permutation for a tile (for example, 6 subcarriers in N _sym OFDMA symbols), cluster numbering and tile per tile without considering the pilot subcarrier and Assignment can be applied. Specifically, as shown in FIG. 3 and FIG. 5, available frequency resources may be numbered through a cluster index as shown in FIG. 6 for N _RU DRUs (DLRUs) given in one distributed resource group for DLRU configuration. As shown in FIG. 6, one or more consecutive physical subcarriers may be used for configuration of a basic cluster. For example, it can be selectively applied according to the MIMO mode such as SFCB. In FIG. 6, it is assumed that N _{sc, CL} = 2, n _k = 2, that is, N _{sc, LRU} = P _sc -n _k (= 16). That is, an example of performing cluster numbering by assuming two pilot subcarriers in a specific OFDMA symbol in one PRU and configuring two consecutive subcarriers in clusters for 16 data subcarriers is shown. In addition, since there are N _{sc, LRU} / N _{sc, CL} clusters in the _LRU , the total number of clusters is N _RU * N _{sc, LRU} / N _{sc, CL} .

Next, a method of renumbering a cluster group and a corresponding cluster index for each cluster group will be described.

FIG. 7 illustrates a method for renumbering a cluster group and a corresponding cluster index for each cluster group according to the present invention.

When allocating the cluster index in FIG. 6 to the final DLRU, it is desirable to design the distributed indexes over all bands of available resources as in the previous requirements, and in this case, the plurality of subchannels have the same or similar distribution characteristics. In general, the number of available clusters in the LRU is the same as the number of clusters required in the final distributed subchannel. However, considering that the cluster in the LRU in FIG. 6 needs to be reassigned to a distributed subchannel as a set of contiguous subcarriers, and that the number of available LRUs can generally vary, the total available clusters can be permuted at one time. Presentation increases the complexity of subchannel generation and makes it difficult to achieve full-band dispersion, identical / similar dispersion characteristics, etc. within the subchannel. Accordingly, it is necessary to additionally number the available cluster indexes in FIG. 6, in which case, the cluster group and the corresponding index numbering are utilized. FIG. 7 may redefine the cluster index of FIG. 6 with two parameters, k _CL , n _{CL, GR} . In the case of FIG. 7, when N _RU clusters are allocated to one cluster group for a cluster group, in the case of FIG. 6, a total N _{sc, LRU} / N _{sc, and CL} cluster groups may be set.

Finally, a method of numbering DLRUs and corresponding clusters within one DLRU is described.

8 illustrates a method of numbering DLRUs and corresponding clusters within one DLRU, in accordance with the present invention.

In order to define the DLRU allocation and mapping relationship for the available frequency resources defined as in FIGS. 6 and 7, index numbering of the DLRU is required as in FIG. 8. As described above, since the number of constituent clusters of DLRUs is generally set equal to the number of available clusters of LRUs, FIG. 8 shows an example of configuring N _{sc, LRU} / N _{sc, and CL} clusters in one DLRU. . This is equal to the number of cluster groups in FIG. 7, and using this numbering facilitates mapping individual clusters in one DLRU to different cluster groups. In addition, the total number of configurable DLRUs is not only the same as the number of N _RU LRUs allocated as shown in FIG. 6, but also the number of clusters in one cluster group. On the contrary, it can be utilized to distribute N _RU clusters in one cluster group to N _RU DLRUs. The above two allocation schemes are very advantageous for similarly or identically setting dispersion characteristics in a plurality of DLRU configurations, and it is possible to generate subchannels by distributing as much as possible within the whole available band.

As described above, the individual indexes in the process of mapping the LRU unit to the DLRU may define internal correlation as shown in FIG. 9 to perform internal permutation. The index mapping relationship between the DLRU group in FIG. 6 and the cluster grouping in FIG. 7 is defined as in Equation 1 below.

k _{CL, LRU} = N _{RUn CL, GR} + k _CL

In addition, the cluster grouping in FIG. 7 and FIG. 8 and the cluster index in the individual group and the cluster mapping relationship in the DLRU are defined as in Equation 2 below.

(n _{CL, GR} , k _CL ) = f (n _DLRU , k _{CL, DLRU} )

Here, the function f denotes randomization, and the randomization may vary from a simple form of modulo operation to a form based on a PN sequence. For a given n _DLRU th DLRU, the k _{CL, DLRU} th cluster is mapped to the k _CL th cluster in the n _{CL, GR} th cluster group. Therefore, mapping to the clusters within the LRU constituting the DLRU is possible through equations (1) and (2). 9 shows a mapping relationship in equations (1) and (2).

<DLRU generation method applying randomization of cluster allocation>

Next, a DLRU generation method applying randomization of cluster allocation according to the present invention will be described.

9 illustrates a DLRU generation method applying randomization of cluster allocation according to the present invention.

As shown in FIG. 9, the DLRU configuration to which randomization is applied is defined by a function f. In other words, the cluster group to which a given n _DLRU , k _{CL, DLRU} is mapped and the specific cluster within that cluster group are determined by f. Such a randomization pattern can be combined in many ways according to the cluster group and the cluster assignment in the group.

However, in consideration of the fact that one or more permutations are already applied in the DLRU group establishment step when performing distributed cluster allocation, it is more preferable to minimize and design the function of randomization. Assuming that cluster randomization is sufficiently applied in the upper permutation process, it is possible to map the cluster group and the cluster of the group using uniform randomization. If the number of DLRUs is the same as the number of clusters in one cluster group and the number of clusters in one DLRU is the same as the number of groups of clusters, as in the configuration as shown in FIG. 9, the DLRU index and the clusters in each cluster group The DLRU may be configured in such a manner that the indices are mapped to be the same, and the cluster indexes in the specific DLRU are mapped to be the same as the cluster group index. In other words, it can be defined as (n _{CL, GR} , k _CL ) = (k _{CL, DLRU} , n _DLRU ). Using this, the mapping relationship with the DLRU group is defined by Equation 3.

_{CL k, CL} k · _LRU = N _{RU, DLRU} + n _DLRU

Equation 3 shows that clusters in one DLRU consist of one clusters in the same location of each cluster group. For example, clusters constituting n _DLRU = 0 in FIG. 9 are clusters with k _CL = 0 in n _{CL, GR} = 0 to n _{CL, GR} = (P _sc −n _k ) / N _{sc, CL} −1. The clusters constituting n _DLRU = 1 are clusters of n _{CL, GR} = 0 to n _{CL, GR} = (P _sc -n _k ) / N _{sc, CL} -1 and k _CL = 1. In this way, clusters constituting n _DLRU = N _RU -1 are n _{CL, GR} = 0 to n _{CL, GR} = (P _sc -n _k ) / N _{sc, CL} -1 at k _CL = n _DLRU = N _{It may consist} of clusters that are _RU- 1. It is also possible to make this more general and set up an arbitrary offset during one-to-one mapping. For example, clusters constituting n _DLRU = j may have k _CL = (j + offset) mod (from n _{CL, GR} = 0 to n _{CL, GR} = (P _sc -n _k ) / N _{sc, CL} -1). N _RU -1).

In consideration of the permutation in the symbol (subframe-tile) unit, it is also possible to set the offset in the symbol (subframe) unit to obtain randomization in the frequency and time domain. This can be defined as in Equation 4.

k _{CL, LRU} = N _RU ({k _{CL, DLRU} + offset _{CL, GR} ) mod N _{sc, LRU} / N _{sc, CL} } + {(n _DLRU + offset _CL ) mod N _RU }

Here, offset _{CL, GR} = 0,1, ..., N _{sc, LRU} / N _{sc, CL} -1 and offset _CL = 0,1, ..., N _RU . In order to more effectively perform randomization in the time-frequency domain, in order to map the cluster index in the corresponding DLRU according to the DLRU index to different clusters in the group according to the cluster group, the offset is a function of n _DLRU , k _{CL, and DLRU} . It can be expressed. In other words, DLRU configuration is performed by gathering clusters of different cluster groups or different locations of the group according to the index of the DLRU, in each symbol (or subframe), including collecting the same cluster in a cluster group to form a DLRU. This becomes possible.

In Equation 3, cluster group randomization and cluster randomization in one cluster group are simultaneously applied, or in a DLRU group through sector / cell-specific permutation at the front end of DLRU group configuration. In the case where permutation is applied, the effect of cluster group randomization may not be large. Therefore, when assigning a cluster in a DLRU, it is more desirable to consider permutation of which cluster in a cluster group to map. In the case of Equation 3, it is effective than offset _{CL, GR} defining the offset _CL. In addition, for randomization, it is desirable to define an offset uniquely for a sector / cell.

As described above, randomization including randomization in units of symbols or subframes in the time domain rather than randomization in the frequency domain may be expressed as shown in Equation 5 by setting two offsets in addition to the function f.

(n _{CL, GR} , k _CL ) = ((f (n _DLRU , k _{CL, DLRU} ) (1) + offset _{CL, GR} ) mod N _{sc, LRU} / N _{sc, CL} , (f (n _DLRU , k _{CL , DLRU} ) (2) + offset _CL ) mod N _RU )

Here f (a, b) (i) represents the i-th element of f (a, b). In the above equation, f (.,.) (1) represents randomization for cluster group selection, and f (.,.) (2) represents randomization for cluster selection in a specific cluster group. In the case of applying a diversity method on a time axis such as STBC, the offset value between clusters in symbol units must be kept constant.

<Variable Frequency Resource Allocation Method Using Repetitive Internal Permutation>

The internal permutation configured as in FIG. 9 shows a mapping of a given available DLRU group to the DLRU. However, in a situation in which the frequency reception capability of the terminal is different and a terminal using a plurality of carriers or guard subcarriers and a terminal receiving only a single carrier are mixed, consideration of an effective permutation method for configuring a DLRU is required. While minimizing the impact on a terminal using a single carrier or a plurality of carriers, a DLRU configuration supporting a terminal with more extended capabilities can avoid collisions between DLRU configurations by repeatedly applying additional available resources to perform internal permutation. Can be. Specifically, a mixed DLRU configuration in different frequency domains is possible through the following process.

First, in order to support a UE using a single carrier or at least a plurality of carriers, internal permutation is performed as shown in FIG. 9, and a DLRU is allocated by the corresponding UE.

Second, reconfiguration is performed by collecting cluster resources excluding DLRU allocated to a terminal having a minimum unit bandwidth capability.

Third, the renumbered cluster and additionally allocated clusters (eg, guard carrier use, multi-carrier DLRU configuration, etc.) are renumbered through renumbering as shown in FIG. 6. In this case, the information on the reconfigured cluster and the added clusters should be informed to the terminal having the corresponding capability.

Fourth, DLRU permutation is performed on the renumbered cluster incorporating the added cluster as shown in FIG. 9.

Fifth, the UE having the corresponding bandwidth capability among the generated DLRUs is allocated and sequentially performs the steps below the second step on the remaining clusters. If no cluster resources remain, terminate the permutation.

In this way, indexing for the additionally created DLRU is preferably defined by inheriting the number of the DLRU index generated in the previous step. It is easy to apply additional signaling or mapping since the logical DLRU index configuration has a clear boundary between the DLRU in the terminal that continuously receives a single or at least multiple carriers and the index of the DLRU for the terminal having the extended capability. In addition, since the DLRU configuration is sequentially performed in the terminal, whether the DLRU is generated from a single carrier or a plurality of carriers or guard bands can be naturally distinguished. In this case, by transmitting the resource information for the guard band or additional DLRU configuration from the terminal through a broadcast channel (broadcast channel), it is possible to configure the DLRU to which the terminal applies the most distributed cluster using the minimum signaling.

Hereinafter, embodiments according to the present invention will be described.

10 is a conceptual diagram illustrating a method for allocating frequency resources to a mobile station in a base station of a wireless mobile communication system using a plurality of carriers according to an embodiment of the present invention.

Referring to FIG. 10, block 1001 represents a set of consecutive physical resource units in a physical area. First, this set of contiguous resource units is permuted to form a set of physical resource units 1002A that are reordered. Then, the ordered set of physical resource units 1002A may be assigned to several frequency partitions, as shown at 1002B. For example, several frequency partitions may be divided into a first frequency partition Freq. Part1, a second frequency partition Freq. Part2, and a third frequency partition Freq. Part3 as shown in FIG. . Here, each frequency partition may be reserved for an FFR group for each sector in one cell. In each frequency partition, a portion of the ordered physical resource unit 1002A may be assigned to the local permutation group 1003A, and the remaining portion of the ordered physical resource unit 1002A is distributed permu. May be assigned to presentation group 1003B. Here, resource units of the local permutation group 1003A are preserved for contiguous resource mapping, and resource units of the distributed permutation group 1003B are preserved for distributed resource mapping. do. The resource units can then be distributed and distributed by subcarrier permutation 1004.

The resource mapping from the subcarrier according to the present invention may include a first permutation P1, in which the order of the physical resource units 1001 is rearranged by the first permutation P1, thereby physical resource unit 1002A. Can be generated. Here, the first permutation P1 refers to the outer permutation described above. In addition, the mapping method may include a second permutation P2 performed in each frequency partition and a third permutation P3 consisting of a predetermined number of subcarrier units. Here, the above-described second level of permutation refers to the second permutation P2. The upper permutation described above may refer to the first permutation P1 and the second permutation P2. Lastly, inner permutation proposed in the present invention refers to the third permutation (P3). By the first permutation P1, physical resource units are allocated to each frequency partition. The indexes of the physical resource units reordered by the second permutation P2 may be newly numbered in each frequency partition. While renumbering, the physical resource units may be distributed into resource groups for local allocation or resource groups for distributed allocation. By the third permutation P3, the subcarriers are distributed to the subchannels (ie, one DLRU). In FIG. 10, the first permutation P1 and the second permutation P2 are illustrated as being performed separately, but such a series of processes may be performed at one time by one single process.

In the present invention, the total number of resource units constituting the entire system band may be 24 for 5 MHz system bandwidth, 48 for 10 MHz system bandwidth, and 96 for 20 MHz system bandwidth.

According to an embodiment of the present invention, generating a first resource group from a part or all of frequency resources belonging to a frequency band used in a wireless mobile communication system, and a data subcarrier belonging to the generated first resource group Generating a plurality of distributed logical resource units by a first predetermined permutation rule, and assigning some or all of the generated plurality of distributed logical resource units to a first mobile station using a first frequency bandwidth. Steps. Here, the first resource group represents any one of the above-described distributed permutation group 1003B, and the plurality of distributed logical resource units are the resource units 1005 generated by the above-described third permutation 1004. Refers to. Here, the predetermined first permutation rule may be determined by any one of Equations 3 to 5 described above.

The next step may then be further performed after the step of assigning to the first mobile station. That is, except for the frequency resources allocated in the allocating step, generating a second resource group from some or all of the frequency resources belonging to the frequency band, a data subcarrier belonging to the generated second resource group (data subcarrier) Generating a plurality of distributed logical resource units by a second predetermined permutation rule, and generating some or all of the plurality of distributed logical resource units generated by the second permutation rule by the first frequency bandwidth. The method may further include allocating to a second mobile station that uses a larger second frequency bandwidth. Here, the second permutation rule may be the same as the first permutation rule described above. The further steps are performed to realize the spirit of the present invention described in the above-described &quot; variable frequency resource allocation scheme through repeated internal permutation application &quot;. Accordingly, the second resource group may include a guard subcarrier existing at a boundary between the plurality of carriers.

Another embodiment of the present invention provides a portion of a plurality of distributed logical resource units in a base station of a wireless mobile communication system using a frequency band including a first carrier and a second carrier adjacent to each other in a frequency domain. Or allocating all to mobile stations. Here, the mobile stations provided with the service by the base station may have different capacities, and thus may have different frequency bandwidths that can be used by the mobile stations. That is, the first mobile station may use both the first carrier and the second carrier, while the second mobile station may use only the first carrier. Here, the guard subcarrier may be included in the frequency domain adjacent to the other carrier of each carrier. In this case, it is preferable that the second mobile station using only the first carrier is not assigned this guard subcarrier. Accordingly, the resource allocation method according to this embodiment includes allocating the plurality of distributed logical resource units to the first mobile station and the second mobile station, and transmitting a signal through the allocated distributed logical resource units. And at least one guard subcarrier is assigned only to the first mobile station, and only the subcarriers are excluded from the at least one guard subcarrier.

In this embodiment, the method may further include generating one or more resource groups from some or all of the frequency resources of the frequency band, wherein the one or more resource groups represent the distributed permutation group 1003B of FIG. 10. In this case, the plurality of distributed logical resource units may be generated by a predetermined permutation rule from data subcarriers of a first resource group of the one or more resource groups. Here, the predetermined first permutation rule may be determined by any one of Equations 3 to 5 described above.

Another embodiment of the present invention applies the above-described idea of the present invention to a mobile station. That is, the present invention relates to a method for receiving a signal at a mobile station of a wireless mobile communication system using a plurality of carriers. This embodiment includes receiving information from a base station indicating a logical resource unit assigned to the mobile station, and receiving a signal transmitted from the base station via the logical resource unit. In this case, the logical resource unit allocated to the mobile station is a predetermined permutation rule from data subcarriers belonging to a resource group generated from part or all of frequency resources belonging to a frequency band used in the wireless mobile communication system. It is selected from a plurality of distributed logical resource unit generated by the predetermined permutation rule may be determined by any one of the above-described equations (3) to (5).

The above-described DLRU may be called a distributed resource unit (DRU) before the subcarrier permutation 1004 step of FIG. 10. In addition, the above-described LLRU may be called a contiguous resource unit (CRU) before the subcarrier permutation 1004 step of FIG. 10. The subcarrier permutation of FIG. 10 corresponds to the internal permutation of FIGS. 3 and 5.

The above-described embodiments are merely examples for implementing the spirit of the present invention described above, and those skilled in the art at the time of filing the present invention are not limited by the embodiments. You will understand.

The subcarrier allocation scheme proposed in the present invention has been defined based on IEEE 802.16m, but is not limited thereto. The subcarrier allocation scheme can be extended to a general subcarrier allocation scheme.

The embodiments described above are the components and features of the present invention are combined in a predetermined form. Each component or feature is to be considered optional unless stated otherwise. Each component or feature may be embodied in a form that is not combined with other components or features. It is also possible to combine some of the components and / or features to form an embodiment of the invention. The order of the operations described in the embodiments of the present invention may be changed. Some components or features of one embodiment may be included in another embodiment or may be replaced with corresponding components or features of another embodiment. It is obvious that the claims may be combined to form an embodiment by combining claims that do not have an explicit citation relationship in the claims or as new claims by post-application correction.

In this document, embodiments of the present invention have been described based on data transmission / reception relations between a base station and a terminal. Here, the base station has a meaning as a terminal node of the network that directly communicates with the terminal. The specific operation described as performed by the base station in this document may be performed by an upper node of the base station in some cases. That is, it is obvious that various operations performed for communication with a terminal in a network composed of a plurality of network nodes including a base station may be performed by the base station or other network nodes other than the base station. 'Base station' may be replaced by terms such as a fixed station, a Node B, an eNode B (eNB), an access point, and the like. In addition, the term 'mobile station (MS)' may be replaced with terms such as a user equipment (UE), a mobile subscriber station (MSS) or a terminal.

Embodiments according to the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof. In the case of a hardware implementation, an embodiment of the present invention may include one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), FPGAs ( field programmable gate arrays), processors, controllers, microcontrollers, microprocessors, and the like.

In the case of implementation by firmware or software, an embodiment of the present invention may be implemented in the form of a module, procedure, function, etc. that performs the functions or operations described above. The software code may be stored in a memory unit and driven by a processor. The memory unit may be located inside or outside the processor, and may exchange data with the processor by various known means.

It is apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention. Accordingly, the above detailed description should not be interpreted as limiting in all aspects and should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

The present invention can be used in a base station or mobile station of a wireless mobile communication system.

1 illustrates a logical frame structure of the IEEE 802.16e system.

2 shows an example of a hierarchical structure of a downlink physical structure.

3 illustrates a mapping between downlink subcarriers and resource units, in accordance with the present invention.

4 shows an example of an uplink physical structure according to the present invention.

5 shows a mapping process from an uplink subcarrier to a resource unit according to the present invention.

Figure 6 illustrates a method for numbering clusters within a given distributed resource group, in accordance with the present invention.

FIG. 7 illustrates a method for renumbering a cluster group and a corresponding cluster index for each cluster group according to the present invention.

8 illustrates a method of numbering DLRUs and corresponding clusters within one DLRU, in accordance with the present invention.

9 illustrates a DLRU generation method applying randomization of cluster allocation according to the present invention.

10 is a conceptual diagram illustrating a method for allocating frequency resources to a mobile station in a base station of a wireless mobile communication system using a plurality of carriers according to an embodiment of the present invention.

Claims (11)

A method of allocating frequency resources to a mobile station in a base station of a wireless mobile communication system using a plurality of carriers, Generating a first resource group from a part or all of frequency resources belonging to a frequency band used in the wireless mobile communication system; Generating a plurality of distributed logical resource units according to a first predetermined permutation rule from data subcarriers belonging to the generated first resource group; And Allocating some or all of the generated plurality of distributed logical resource units to a first mobile station using a first frequency bandwidth Including, The predetermined first permutation rule, characterized in that determined by Equation 1, Resource allocation method. [Equation 1] k _{CL, LRU} = N _RU ({k _{CL, DLRU} + offset _{CL, GR} ) mod N _{sc, LRU} / N _{sc, CL} } + {(n _DLRU + offset _CL ) mod N _RU } Here, the number of the distributed logical resource units and the number of resource units included in the first resource group are each N _RU , and the N _RU distributed logical resource units and the N _RU resource units are each N _RU *. N _{sc, LRU} / N _{sc, CL} is divided into clusters, where N _{sc, LRU} is the number of data subcarriers included in one resource unit, and N _{sc, CL} is the number of data subcarriers included in each cluster. The k _{CL, LRU} is the cluster index (0≤k _{CL, LRU} <N _RU * N _{sc, LRU} / N _{sc, CL} ) of the cluster constituting the N _RU resource units, and the n _DLRU is the N _RU Indexes of 0 distributed logical resource units (0 _≦ n _DLRU <N _RU ), wherein k _{CL, DLRU} is a cluster index of clusters included in each distributed logical resource unit (0 _≦ k _{CL, DLRU} <N _{sc, LRU)} / N _{sc, CL)} and, offset _{CL, GR} is from 0 to _{N sc, LRU / N sc,} CL -1 any one of Is a predetermined value with a value, offset _CL is a predetermined value having any one value of 0 to N _RU. The method of claim 1, And the offset _{CL, GR} and offset _CL are each 0. The method of claim 1, Generating a second resource group from some or all of the frequency resources belonging to the frequency band, except for the frequency resources allocated in the allocating step; Generating a plurality of distributed logical resource units according to a second predetermined permutation rule from data subcarriers belonging to the generated second resource group; And Allocating some or all of the plurality of distributed logical resource units generated by the second permutation rule to a second mobile station that uses a second frequency bandwidth that is greater than the first frequency bandwidth. Further comprising, Resource allocation method. The method of claim 3, And the first resource group and the second resource group consist of logical resource units used for distributed allocation of frequency resources. The method of claim 3, And the second resource group includes a guard subcarrier present at a boundary between the plurality of carriers. In the base station of the wireless mobile communication system using a frequency band including a first carrier and a second carrier adjacent to each other in a frequency domain, a part or all of a plurality of distributed logical resource units are allocated to the first carrier and A resource allocation method for allocating to a first mobile station using all of the second carriers and a second mobile station using only the first carrier, The first carrier includes one or more guard subcarriers adjacent to the second carrier in the frequency domain, The resource allocation method, Allocating the plurality of distributed logical resource units to the first mobile station and the second mobile station; And Transmitting a signal through the allocated distributed logical resource unit Including; The at least one guard subcarrier is assigned only to the first mobile station, and the second mobile station is assigned only subcarriers except the at least one guard subcarrier, Resource allocation method. The method of claim 6, Generating at least one resource group from some or all of the frequency resources of the frequency band, Wherein the plurality of distributed logical resource units are generated by a predetermined permutation rule from data subcarriers of a first resource group of the one or more resource groups Resource allocation method. The method of claim 7, wherein Wherein said at least one resource group is comprised of logical resource units used for distributed allocation of frequency resources. The method of claim 7, wherein The predetermined permutation rule is determined by Equation 1 below. [Equation 1] k _{CL, LRU} = N _RU ({k _{CL, DLRU} + offset _{CL, GR} ) mod N _{sc, LRU} / N _{sc, CL} } + {(n _DLRU + offset _CL ) mod N _RU } Here, the number of the plurality of distributed logical resource units and the number of resource units included in the first resource group are each N _RU , and the N _RU distributed logical resource units and the N _RU resource units are each N _RU *. N _{sc, LRU} / N _{sc, CL} is divided into clusters, where N _{sc, LRU} is the number of data subcarriers included in one resource unit, and N _{sc, CL} is the number of data subcarriers included in each cluster. The k _{CL, LRU} is the cluster index (0≤k _{CL, LRU} <N _RU * N _{sc, LRU} / N _{sc, CL} ) of the cluster constituting the N _RU resource units, and the n _DLRU is the N _RU Indexes of 0 distributed logical resource units (0 _≦ n _DLRU <N _RU ), wherein k _{CL, DLRU} is a cluster index of clusters included in each distributed logical resource unit (0 _≦ k _{CL, DLRU} <N _{sc, LRU)} / N _{sc, CL)} and, offset _{CL, GR} is from 0 to _{N sc, LRU / N sc,} CL -1 any one of Predetermined value has a value _CL and the offset is a predetermined value having any one value of 0 to N _RU. 10. The method of claim 9, Wherein the offset _{CL, GR} and offset _CL are each 0. A method for receiving a signal at a mobile station of a wireless mobile communication system using a plurality of carriers, Receiving from the base station information indicating a logical resource unit allocated to the mobile station; And Receiving a signal transmitted from the base station via the logical resource unit Including, The logical resource unit allocated to the mobile station is determined by a predetermined permutation rule from data subcarriers belonging to a resource group generated from part or all of frequency resources belonging to a frequency band used in the wireless mobile communication system. Is selected from a plurality of distributed logical resource units that are generated, The predetermined permutation rule, characterized in that determined by Equation 1, How to receive the signal. [Equation 1] k _{CL, LRU} = N _RU ({k _{CL, DLRU} + offset _{CL, GR} ) mod N _{sc, LRU} / N _{sc, CL} } + {(n _DLRU + offset _CL ) mod N _RU } Here, the number of the plurality of distributed logical resource units and the number of resource units included in the resource group are each N _RU , wherein the N _RU distributed logical resource units and the N _RU resource units are each N _RU * N _{sc NRU} and N _{sc and CL} are divided into clusters, and N _{sc and LRU} are the number of data subcarriers included in one resource unit, and N _{sc and CL} are the number of data subcarriers included in each cluster. k _{CL, LRU} is the cluster index (0≤k _{CL, LRU} <N _RU * N _{sc, LRU} / N _{sc, CL} ) of the cluster constituting the N _RU resource units, and the n _DLRU is the N _RU distributed Index of a logical resource unit (0 _≦ n _DLRU <N _RU ), where k _{CL, DLRU} is the cluster index of the cluster included in each distributed logical resource unit (0 _≦ k _{CL, DLRU} <N _{sc, LRU} / N _{sc, CL} ), and offset _{CL, GR} is any value from 0 to N _{sc, LRU} / N _{sc, CL} -1 And a predetermined value with offset _CL is a predetermined value with any one of 0 to N _RU .

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