CN112566246A

CN112566246A - Master control base station and resource allocation indication method

Info

Publication number: CN112566246A
Application number: CN201910850559.6A
Authority: CN
Inventors: 蒋坤霖; 简绍育; 黄任锋
Original assignee: Zhonglei Electronics Co ltd
Current assignee: Zhonglei Electronics Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2021-03-26
Anticipated expiration: 2039-09-10
Also published as: CN112566246B

Abstract

The invention provides a master control base station and a resource allocation indicating method. The master base station and the distributed base stations are based on layer 1 and layer 2 segmentation techniques. In this method, partial bandwidth allocation is enabled. Different partial bandwidth configurations are allocated differently in the frequency domain, and the partial bandwidth configurations correspond to consecutive and partial shared resource units. The partial bandwidth allocation is mapped to the common allocation to generate the corresponding relationship. The mapping relationship is related to the mapping between the identification information of the local resource unit and the identification information of the shared resource unit, the partial bandwidth allocation uses the identification information of the local resource unit to distinguish the local resource unit, and the shared allocation uses the identification information of the shared resource unit to distinguish the shared resource unit. And transmitting the corresponding relation. Thus, a portion of the bandwidth can be applied to the transmission interface of layer 1 and layer 2 partitioning techniques.

Description

Master control base station and resource allocation indication method

Technical Field

The present invention relates to radio resource allocation, and in particular, to a master base station and a resource allocation indication method.

Background

In recent years, there is an increasing demand from people, enterprises or governments for internet of things (IoT) related devices and their application services, and research on related standards for improving their performance are also ongoing. It is noted that Small Cell is one of the key points of recent development to improve coverage, system capacity, or internet experience. In the Small Cell Forum (SCF), a network Functional Application Platform Interface (nFAPI) is proposed to split the functionality of a fronthaul (fronthaul) link. Fig. 1 is a schematic diagram of a prior art system architecture. Referring to fig. 1, a base station can be divided into a Centralized Unit (CU) and a Distributed Unit (DU). In the standard specification of the nFAPI, Media Access Control (MAC) -entity (PHY) partitioning (split) is a partitioning architecture that has been adopted by multiple vendors during the development of Long Term Evolution (LTE). In the MAC-PHY division structure, the central unit takes charge of functions such as a Service Data Adaptation Protocol (SDAP) Layer, a Packet Data Convergence Protocol (PDCP) Layer, a Radio Link Control (RLC) Layer, a MAC Layer, and a PHY Control (CTRL) Layer, and the distributed unit takes charge of functions of a PHY-Layer 1(Layer 1, L1).

On the other hand, the fifth Generation (5G) Next Generation (NR) communication introduces the concept of a partial Bandwidth (BWP) in the carrier band. Each partition includes consecutive common Resource Blocks (RBs) and each partition has independent parameter configuration (e.g., starting Resource Block, number of Resource blocks, etc.). It is noted that the fourth generation (4G) mobile communication does not use the fractional bandwidth technique, so after the system side designates a specific frequency band, the knowledge of the resource block locations in the designated frequency band is consistent for Layer 1 and Layer 2(Layer 2, L2) (i.e., the centralized unit and the distributed unit). However, the introduction of partial bandwidth techniques will result in inconsistent knowledge of resource block locations by layer 1 and layer 2.

Fig. 2 is a diagram illustrating resource block mapping. Referring to FIG. 2, it is assumed that there are eight Common Resource Blocks (CRBs), and that the two partial bandwidth allocations BWP0 and BWP1 correspond to two non-overlapping frequency bands. The physical resource blocks PRB0 of the two partial bandwidth allocations BWP0 and BWP1 correspond to common blocks CRB0 and CRB3, respectively. In the prior art, the centralized unit informs the distributed units of the resource allocation result according to a logical index (index) (e.g., a value of 1) of the physical resource block PRB 0. However, the logical index of the local resource blocks of BWP0 and BWP1 may be duplicated, and the distribution unit cannot know that the physical resource block PRB0 in BWP1 corresponds to the common block CRB3 (which is mistaken for the common block CRB 0). Therefore, the introduction of the fractional bandwidth technique would require modification of the current nFAPI.

Disclosure of Invention

In view of the above, embodiments of the present invention provide a master base station and a resource allocation indication method, which provide a conversion from partial bandwidth allocation to shared allocation, so that partial bandwidth can be applied to layer 1 and layer 2 partitioning techniques.

The resource allocation indication method of the embodiment of the invention is suitable for the master control base station. The master base station is connected with one or more scattered base stations, and the master base station and the scattered base stations are based on layer 1 and layer 2 segmentation technologies. The resource allocation indicating method comprises the following steps: enable (enable) partial Bandwidth (BWP) configuration. Different partial bandwidth allocations are different for the allocation of radio resources in the frequency domain, the radio resources comprise a plurality of shared resource units, and the partial bandwidth allocations correspond to consecutive and partial shared resource units. The partial bandwidth allocation is mapped to the common allocation to generate the corresponding relationship. The mapping relationship is related to the mapping between the identification information of the plurality of local resource units and the identification information of the shared resource units, the partial bandwidth allocation uses the identification information of the local resource units to distinguish the local resource units, and the shared allocation uses the identification information of the shared resource units to distinguish the shared resource units. A correspondence is transmitted and used by the decentralized base station.

The master control base station of the embodiment of the invention comprises an inter-base station transmission interface and a processor. The inter-base station transmission interface is used for connecting one or more scattered base stations. The master base station and the distributed base stations are based on layer 1 and layer 2 segmentation techniques. The processor is coupled with the transmission interface between the base stations, enables partial bandwidth configuration, corresponds the partial bandwidth configuration to the shared configuration to generate a corresponding relation, and transmits the corresponding relation through the transmission interface between the base stations. Different partial bandwidth allocations correspond to different allocations of radio resources in the frequency domain, the radio resources including a plurality of shared resource units, and the partial bandwidth allocations correspond to consecutive and partial shared resource units. The mapping relationship is related to the mapping between the identification information of the plurality of local resource units and the identification information of the shared resource units, the partial bandwidth allocation uses the identification information of the local resource units to distinguish the local resource units, and the shared allocation uses the identification information of the shared resource units to distinguish the shared resource units. The correspondence is for use by the decentralized base station.

Based on the above, the master base station and the resource allocation indicating method of the embodiments of the present invention notify the distributed base stations of the correspondence between the partial bandwidth configurations and the shared resource units. Under the configuration of unknown partial frequency width, the scattered base station can obtain the correct resource unit position from the resource allocation result only based on the corresponding relation. Thus, the embodiment of the invention can apply partial bandwidth to the transmission interface of the layer 1 and layer 2 partitioning technology.

In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic diagram of a prior art system architecture.

Fig. 2 is a diagram illustrating resource block mapping.

Fig. 3 is a diagram of a communication system according to an embodiment of the invention.

Fig. 4 is a block diagram of a master base station according to an embodiment of the invention.

Fig. 5 is a flowchart of a resource allocation indication method according to an embodiment of the invention.

Fig. 6 is a diagram illustrating a data format of a corresponding relationship according to an embodiment of the invention.

Fig. 7A and 7B show two examples of the corresponding relationship.

The reference numbers illustrate:

DU: centralized unit

CU: dispersing unit

nAPI: network function application platform interface

SDAP: service data adaptation protocol

PDCP: packet data convergence protocol

RLC: radio link control

PHY CTRL: entity control

PHY-L1: PHY layer 1

CRB 0-CRB 10: shared resource block

BWP0, BWP 1: partial bandwidth allocation

PRB 0-PRB 9: physical resource block

10: user equipment

30: decentralized base station

100: master control base station

110: transmission interface between base stations

130: memory device

150: processor with a memory having a plurality of memory cells

S510 to S550: step (ii) of

601: group size

602: amount of resources

603: group shift number

604: resource allocation location

RBG 0-RBG 5: resource block group

Detailed Description

Fig. 3 is a schematic diagram of a communication system 1 according to an embodiment of the present invention. Referring to fig. 3, the communication system 1 includes, but is not limited to, one or more User Equipments (UEs) 10, one or more distributed base stations 30, and a master base station 100. The communication system 1 is suitable for 4G, 5G or other generation mobile networks.

The user Equipment 10 may be a Mobile Station, Advanced Mobile Station (AMS), telephone device, Customer Premises Equipment (CPE), or wireless sensor, among other devices.

The distributed base stations 30 may be referred to as Distributed Units (DUs), or Transmission Reception Points (TRPs). The master base station 100 may be referred to as a Central Unit (CU). The distributed Base station 30 and the master Base station 100 may be collectively referred to as a Home Evolved Node B (HeNB), an eNB, a next generation Node B (gnb), a Base Transceiver System (BTS), a relay (relay), or a repeater (repeater). It should be noted that the master base station 100 and the distributed base stations 30 of the embodiment of the present invention are based on layer 1 and layer 2 partitioning techniques (or the MAC-PHY partition defined by the SCF), wherein the distributed base stations 30 are responsible for layer 1 functions and the master base station 100 is responsible for layer 2 functions (possibly including higher layer functions). For example, the master base station 100 shown in fig. 1 corresponds to a CU, and the distributed base stations 30 correspond to a DU. It should be noted that the distributed base station 30 and the master base station 100 may be two independent devices.

Fig. 4 is a block diagram of the master base station 100 according to an embodiment of the present invention. Referring to fig. 4, the master base station 100 includes, but is not limited to, an inter-base station transmission interface 110, a memory 130, and a processor 150.

The inter-base station transport interface 110 may be an Ethernet (Ethernet), fiber optic network, or other transport interface. The inter-base station transmission interface 110 is used to connect the distributed base stations 30 and transmit information to the distributed base stations 30 or receive information from the distributed base stations 30. It should be noted that the communication between the inter-bs transport interface 110 and the distributed bs 30 may be based on the nFAPI standardized interface established by the SCF, or other protocols for layer 1 and layer 2 communication.

The Memory 130 may be any type of fixed or removable Random Access Memory (RAM), Read-Only Memory (ROM), Flash Memory (Flash Memory), or the like, or any combination thereof. The memory 130 is used for recording program codes, device configurations, codebooks (codebooks), buffered or permanent data (e.g., identification information related to correspondence, resource block indexes, etc.), and other various communication protocol related software modules such as the PHY CTRL layer, etc., the description of which will be provided in the following embodiments.

The processor 150 is configured to process the digital signals and execute programs according to exemplary embodiments of the present invention, and may access or load data and software modules recorded by the memory 130. The functions of the processor 150 may be implemented using Programmable units such as a Central Processing Unit (CPU), a microprocessor, a microcontroller, a Digital Signal Processing (DSP) chip, a Field Programmable Gate Array (FPGA), and the like. The functions of the processor 150 may also be implemented by a stand-alone electronic device or Integrated Circuit (IC), and the operations of the processor 150 may also be implemented by software.

To facilitate understanding of the operation flow of the embodiment of the present invention, the operation flow of the communication system 1 in the embodiment of the present invention will be described in detail below with reference to various embodiments. Hereinafter, the method according to the embodiment of the present invention will be described with reference to each device and its components in the communication system 1. The flow of the method according to the embodiment of the present invention may be adjusted according to the implementation situation, and is not limited thereto.

Fig. 5 is a flowchart of a resource allocation indication method according to an embodiment of the invention. Referring to fig. 5, the processor 150 enables (enable) partial Bandwidth (BWP) configuration (step S510). Specifically, the partial bandwidth relates to a set of consecutive physical resource units (e.g., resource blocks, or other resource units) in the radio resource, which are selected from a plurality of consecutive common resource units (e.g., common resource blocks, other common resource units, etc. defined by 3GPP TS 38.211) (i.e., the partial bandwidth allocation corresponds to consecutive and partial common resource units). These common resource areas collectively form the carrier bandwidth and are used for signaling between the distributed base stations 30 and the user equipment 10. The partial bandwidth configuration may include parameters such as a starting position in those physical resource units, a number of consecutive resource units, and/or a subcarrier spacing (subcarrier spacing). The different partial bandwidth configurations differ for those common resource units in the radio resource in their configuration in the frequency domain, i.e. their parameters of the partial bandwidth configuration differ.

It should be noted that the fractional bandwidth may be defined in 3GPP TS 38.211&38.213, or may be defined in other standards. The aforementioned consecutive indicates that a plurality of resource units are arranged in the frequency domain according to the index/sequence/center frequency size. For example, the resource block of index 3 is located between two resource blocks of index 2 and index 4. In addition, the embodiment of the invention does not limit the parameters in the partial bandwidth configuration.

Next, the processor 150 corresponds the partial bandwidth allocation to the common allocation to generate a corresponding relationship (step S530). Specifically, in the prior art, the knowledge of the resource unit locations between CUs and DUs is different, which results in the user equipment 10 using the same resource unit at the same time. In order to apply the partial bandwidth technique to the transmission interface (e.g., nFAPI) of the layer 1 and layer 2 partitioning techniques, the following solution is proposed in the embodiments of the present invention. One of the main functions of the solution is to establish a correspondence between the identification information of the plurality of local resource units and the identification information of those shared resource units, and the correspondence is related to the correspondence. Local resource units refer to those resource units that are configured for partial bandwidth allocation. E.g., a particular starting location and number of resource blocks. The local resource unit may be a physical resource block (physical resource block) defined by 3GPP TS 38.211 or other resource units.

The partial bandwidth allocation uses the identification information of the local resource units to distinguish the local resource units. The identification information may be a unique index, sequence, or code, and the identification information corresponding to each resource unit is different from others. In one embodiment, the identification information is related to the magnitude order of the center frequencies. For example, the index of the lowest center frequency of the plurality of local resource units is 0, the index of the next lowest is 1, and so on.

On the other hand, the common configuration is to use the identification information of the common resource units to distinguish those common resource units, and is available for the main control base station 100 and the distributed base stations 30 in a Radio Access Network (RAN) to use together. Since the starting position of the partial bandwidth allocation in the common resource unit is not necessarily the first common resource unit in the order (i.e. the lowest center frequency), the identification information of the local resource unit may be different from the identification information of the common resource units in the same order (in the order of the center frequency). Taking fig. 2 as an example, the physical resource block PRB0 (index 0) in the partial bandwidth allocation BWP1 corresponds to the common resource block CRB3 (index 3) instead of the common resource block CRB0 (index 0). As can be seen from this, if the distributed base station 30 can know the correspondence between the local resource units and the shared resource units, the master base station 100 and the distributed base station 30 will agree with each other about the positions of the resource units.

In one embodiment, the processor 150 groups a plurality of common resource units according to the partial bandwidth allocation to generate the corresponding relationship. Specifically, it is defined in 3GPP TS 38.214 that resource allocation type 0(resource allocation type 0) includes a bitmap (bitmap) for resource block configuration information. This bitmap is used to indicate Resource Block Groups (RBGs) allocated to a particular user equipment 10, and one Block Group is a set of consecutive Resource blocks.

Based on similar concepts, the embodiments of the present invention group the common resource units to form a plurality of groups. The common resource units included in the groups are not repeated, the maximum number of the common resource units included in each group is the same, and the identification information corresponding to the common resource units included in each group and the adjacent groups is continuous. For example, the first group includes a first shared resource unit, the second group includes second and third shared resource units, and the third group includes fourth and fifth shared resource units.

It is noted that the corresponding relationship further includes a starting position of the local resource unit corresponding to the common resource unit, and the starting position corresponds to one common resource unit. If the ordering is based on the center frequency, the start position is the identification information of the common resource unit corresponding to the same center frequency corresponding to the first local resource unit. Since the local resource units included in any partial bandwidth allocation are consecutive, the difference between the local resource units and the common resource units at the same position in the sequence of the identification information can be obtained based on the starting position. Taking fig. 2 as an example, the starting position of the physical resource block PRB0 in the partial bandwidth allocation BWP1 is the value of the common resource block CRB3 or 4. Furthermore, based on the grouping concept, if the same group size is used for the local resource units in the fractional bandwidth configuration (i.e., the number of resource units in a single group is the same), the processor 150 can use the difference between the first local resource unit and the corresponding group of the first shared resource unit to represent the starting position (assuming that both are sorted from small to large according to the center frequency size).

In one embodiment, the mapping relationship includes a group size, a resource amount, a group displacement number, and a resource allocation location. The group size is equal to the maximum number of local resource units included in each group. Such as 2, 4, 8, or 16. The resource amount is the amount of local resource units included in a first ordered one of the groups into which the local resource units are grouped. For example, if the group size is 8, the number of resources may be 1-8. The group shift number is associated with the start position. The group shift number is the number of groups that differ between the first group and the first shared resource unit, and may be the quotient of the index/sequence number of the shared resource unit corresponding to the first group divided by the group size. For example, if the index of the common resource unit corresponding to the first group is 4 (starting with 0 and being sized from the lowest center frequency to the highest), and the group size is 4, the group shift number is 1. The resource allocation locations are associated with groups that have been allocated, i.e. groups that have been allocated to a particular user equipment 10. The resource allocation location may be a bitmap of allocation type zero, and the bit locations correspond to the permutation order of the groups. For example, the Most Significant Bit (MSB) to the Least Significant Bit (LSB) sequentially correspond to the first group to the last group. In addition, in the resource allocation location, the codes corresponding to the allocated groups are different from the codes that are not configured. For example, the allocated bit value is 1, and the unconfigured bit value is 0.

In one embodiment, the correspondence may be represented in a binary information format. Fig. 6 is a diagram illustrating a data format of a corresponding relationship according to an embodiment of the invention. Referring to fig. 6, the data format includes a group size 601, a resource amount 602, a group offset 603, and a resource allocation location 604. It should be noted that the number of bits of each parameter shown in fig. 6 is determined according to the resource block group size corresponding to the bandwidth portion size defined by 3GPP TS 38.214. Table (1) shows the correspondence between the size of the bandwidth part and the size of the resource block group (unit is the number of resource blocks):

watch (1)

The resource block group size may be 2, 4, 8 or 16, and the group size 601 may be represented by "00", "01", "10", "11", respectively. Since the maximum group size is 16, the number of resources 602 may be a value from 0 to 15, and may be represented by a value from "0000" to "1111". The resource block groups are 18 at most, so the maximum value of the group shift number is 18, the group shift number 603 can also represent all values by 6 bits, and the resource allocation location 604 can be represented by 18 bits. In other embodiments, the number of bits for each parameter may vary according to requirements.

Fig. 7A and 7B show two examples of the corresponding relationship. Referring to fig. 7A, assume that the corresponding relationship in the information format of fig. 6 is "00000100000000110000000000000000 "(bottom line is used only to distinguish different parameters). The group size 601 is 2 (resource block group RBG 0-RBG 5 includes at most two physical resource blocks), and is denoted by "00". The number of resources 602 is 1 (the number of physical resource blocks included in the resource block group RBG0 is 1), and is therefore denoted by "0001". The group offset number 603 is 0 (the quotient of 0 divided by 2 for the serial number 0 of the common resource block CRB0 corresponding to the resource block group RBG0 is 0), and is denoted by "000000". Assuming that resource block groups RBG0 and RBG1 have been allocated, resource allocation location 604 is indicated by "110000000000000000".

Please refer to fig. 7B, ifLet the correspondence in the information format of fig. 6 be "00001000000001110000000000000000 "(bottom line is used only to distinguish different parameters). The group size 601 is 2 (resource block group RBG 0-RBG 4 includes at most two physical resource blocks), and is denoted by "00". The number of resources 602 is 2 (the number of physical resource blocks included in the resource block group RBG0 is 2), and is denoted by "0010". The group offset number 603 is 1 (the quotient of the serial number 2 divided by 2 of the common resource block CRB2 corresponding to the resource block group RBG0 is 1), and is denoted by "000001". Assuming that resource block groups RBG0 and RBG1 have been allocated, resource allocation location 604 is indicated by "110000000000000000".

It should be noted that the data format of the corresponding relation encoding in the embodiment of the present invention is not limited to the format shown in fig. 6, and other encoding forms may also be possible for the corresponding relation.

In another embodiment, the correspondence includes a Resource Indication Value (RIV). Specifically, it is defined in 3GPP TS 38.214 that resource allocation type 1(resource allocation type 1) includes a resource indication value for resource block configuration information. The resource indicator corresponds to the starting resource block and the number/length of consecutive allocated resource blocks.

Based on similar concepts, the processor 150 of the embodiment of the invention generates the resource indication value according to the starting location of the local resource unit corresponding to the common resource unit and the amount of the allocated resource. Different resource indicator values correspond to different starting positions and/or different amounts of allocated resources, and a starting position corresponds to one common resource unit. If the resource indication value is decoded, identification information of a specific common resource unit and the number of allocated common resource units (i.e., the number of allocated resources) can be generated. That is, the master base station 100 generates the common resource indicator value for the distributed base stations 30 according to the embodiment of the present invention.

The resource indication value can be obtained by the following equation (1):

if it is

Then

Otherwise

RIV is the resource indication value, L_RBsIs the number of allocated local resource units,

is a bandwidth size, RB, defined by a partial bandwidth allocation_startIs the starting local resource unit of those allocated local resource units, and RB_shiftIs the number of resource units that differ between the first local resource unit in the ranking and the first shared resource unit in the ranking (i.e., the aforementioned local resource unit corresponds to the starting position of the shared resource unit).

It should be noted that the data format for encoding the resource indication value according to the embodiment of the present invention is not limited to equation (1), and any encoding method can be used as long as the encoding method can generate the identification information corresponding to the specific shared resource unit and the number of allocated shared resource units.

Next, the processor 150 transmits the correspondence relationship through the inter-bs transmission interface 110 (step S550) to provide the correspondence relationship for the distributed bs 30 to use. The processor 150 may transmit the corresponding relation to the distributed base station 30 at each schedule (e.g., each Transmission Time Interval (TTI)). The correspondence may be in-band with the data units or information of the resource allocation indication.

In an embodiment, the corresponding relationship is recorded in a Resource Block Coding (Resource Block Coding) field of the Information transmitted by the bs 100 to the bss 30, and the corresponding relationship is used to generate Downlink Control Information (DCI). For example, a Downlink Control Information Protocol Data Unit (DCI PDU) (carried in DL _ config.request Information or UL _ config.request Information) defined by the SCF standard 082.09.05 includes a resource block coding field and a resource allocation type field. The resource block coding field may record the correspondence (e.g., the data format of fig. 6 or the common resource indicator value), and the resource allocation type field may be used to distinguish whether the used allocation type is bitmap (resource allocation type 0) or resource indicator value (resource allocation type 1). In addition, after the distributed base stations 30 obtain the corresponding relationship, the downlink control information provided to the ue 10 can be generated to let the ue 10 know the allocated common resource unit.

It should be noted that, in the foregoing manner, the existing information field may be used to transmit the corresponding relationship. However, in other embodiments, the corresponding relationship may be recorded in other existing fields or newly added fields. In addition, the corresponding relationship may also be transmitted to the distributed base station 30 through other data units or information indicated by resource allocation.

In summary, the master base station and the resource allocation indicating method of the embodiments of the present invention associate part of the bandwidth allocations with the shared resource units to generate a corresponding relationship, so that the distributed base station can obtain correct resource units based on the corresponding relationship. That is, the enb converts the partial bandwidth configuration to the common configuration, so that both the enb and the enb can distinguish the designated resource units based on the common resource units. Thus, a portion of the bandwidth can be applied to the transmission interface of layer 1 and layer 2 partitioning techniques.

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A resource allocation indication method is applicable to a master base station, wherein the master base station is connected with at least one decentralized base station, the master base station and the at least one decentralized base station are based on layer 1 and layer 2 segmentation technology, and the resource allocation indication method comprises the following steps:

enabling a partial bandwidth allocation, wherein different said partial bandwidth allocation is different for allocation of radio resources on a frequency domain, said radio resources comprise a plurality of shared resource units, and said partial bandwidth allocation corresponds to a contiguous and partial said plurality of shared resource units;

mapping the partial bandwidth allocation to a shared allocation to generate a mapping relationship, wherein the mapping relationship relates to a mapping between identification information of a plurality of local resource units and identification information of the plurality of shared resource units, the partial bandwidth allocation uses the identification information of the plurality of local resource units to distinguish the plurality of local resource units, and the shared allocation uses the identification information of the plurality of shared resource units to distinguish the plurality of shared resource units; and

transmitting the correspondence, wherein the correspondence is for use by the at least one decentralized base station.

2. The method according to claim 1, wherein the step of mapping the partial bandwidth allocation to the common allocation to generate the mapping relationship comprises:

grouping the plurality of shared resource units according to the partial bandwidth allocation to generate the corresponding relationship, wherein the maximum number of at least one shared resource unit included in each group is the same, and the corresponding relationship includes the starting positions of the plurality of local resource units corresponding to the plurality of shared resource units, and the starting positions correspond to the shared resource units.

3. The method according to claim 2, wherein the correspondence relationship comprises a group size, a resource quantity, a group displacement number, and a resource allocation position, wherein the group size is equal to the maximum quantity, the resource quantity is a quantity of at least one of the local resource units included in a first group of the plurality of groups into which the local resource units are grouped, the group displacement number is related to the starting position, and the resource allocation position is related to at least one of the groups that have been configured.

4. The method according to claim 1, wherein the corresponding relationship comprises a resource indication value, and the step of the partial bandwidth allocation corresponding to the common allocation to generate the corresponding relationship comprises:

generating the resource indication values according to starting positions and allocated resource quantities of the local resource units corresponding to the common resource units, wherein different resource indication values correspond to different starting positions or different allocated resource quantities, and the starting positions correspond to the common resource units.

5. The method according to claim 1, wherein the correspondence is recorded in a resource block coding field of the information transmitted from the enb to the at least one scell, and the correspondence is used for generating downlink control information.

6. A master base station, comprising:

an inter-base station transmission interface for connecting at least one decentralized base station, wherein the master base station and the at least one decentralized base station are based on layer 1 and layer 2 segmentation technologies; and

a processor coupled to the inter-base station transmission interface and configured to perform:

transmitting the correspondence over the inter-base station transmission interface, wherein the correspondence is for use by the at least one decentralized base station.

7. The master base station of claim 6, wherein the processor is configured to perform:

8. The enb of claim 7, wherein the correspondence relationship comprises a group size, a resource quantity, a group offset number, and a resource allocation location, wherein the group size is equal to the maximum quantity, the resource quantity is a quantity of at least one of the local resource units included in a first group of the plurality of groups into which the local resource units are grouped, the group offset number is associated with the starting location, and the resource allocation location is associated with at least one of the groups that have been configured.

9. The master base station of claim 6, wherein the correspondence comprises a resource indication value, and the processor is configured to perform:

10. The enb of claim 6, wherein the correspondence is a resource block coding field recorded in information transmitted over the enb transport interface, and the correspondence is used to generate downlink control information.