WO2017020190A1

WO2017020190A1 - Resource allocation method, data transmission method, and corresponding apparatus and corresponding system

Info

Publication number: WO2017020190A1
Application number: PCT/CN2015/085771
Authority: WO
Inventors: 何建平
Original assignee: 华为技术有限公司
Priority date: 2015-07-31
Filing date: 2015-07-31
Publication date: 2017-02-09
Also published as: CN106664605A

Abstract

The present invention relates to the technical field of communications, and particularly, to a resource allocation method, a data transmission method, and a corresponding apparatus and a corresponding system. In embodiments of the present invention, an REC allocates CPRI resources to a data transmission unit according to the size of the data transmission unit and the distribution and the size of available CPRI resources. Because the total size of at least two discretely-distributed resource blocks comprised in the CPRI resources allocated to the data transmission unit is equal to the size of resources needed by the data transmission unit, the data transmission unit is transmitted by using the at least two discretely-distributed resource blocks, thereby fully utilizing discretely-distributed resource blocks, and improving the utilization rate of transmission resources.

Description

Resource allocation method, data transmission method, and corresponding device and system

Technical field

The present invention relates to the field of communications technologies, and in particular, to a resource allocation method, a data transmission method, and corresponding devices and systems.

Background technique

CPRI (Chinese: Common Public Radio Interface) is an interface specification for wireless base stations jointly developed by a number of communication equipment manufacturers. CPRI defines the interface specification between REC (Chinese: Wireless Device Controller; English: Radio Equipment Controller) and RE (Chinese: Wireless Device; English: Radio Equipment). The REC is, for example, a baseband part of a base station, such as a BBU (Chinese: Baseband Unit; English: BaseBand Unit); the RE is, for example, a radio frequency part of a base station, such as an RRU (Chinese: Radio Remote Unit; English: Radio Remote Unit). It can be seen that the CPRI specification can be used to implement communication between the baseband portion and the radio frequency portion of the base station.

Please refer to FIG. 1 , which is a schematic structural diagram of a conventional base station. As shown in FIG. 1, it includes RECs 110 and RE120. The CPRI protocol has a 2-layer, 3-plane structure. Layer 2 includes L1 (Chinese: Layer 1, also known as physical layer) and L2 (Chinese: Layer 2, also known as Link Layer); 3 plane includes SAP through L2 (Chinese: Service Access Point; English: Service Access) Point) The control and management plane, the synchronization plane, and the user plane.

The user plane data between REC and RE is transmitted in the form of data in in-phase and quadrature modulation, ie IQ (Chinese: In-Phase/Quadture; English: In-Phase/Quadrature). IQ data is in IQ container. For the unit to transmit, the IQ container is called AxC container (Chinese: Antenna carrier; English: Antenna xCarrier Container).

In order to realize the transmission of IQ data, the CPRI specification specifies that the IQ data is mapped to the transmission resources of the CPRI by using the IQ container as a granularity. The transmission resource is specified in the form of a frame in the CPRI, and its frame knot The structure is as shown in Figure 2: each frame (also known as 10ms frame due to its length of 10ms) is divided into 150 hyperframes, numbered from 0 to 149; each superframe is divided into 256 basic frames. The number is 0 to 255. Each basic frame has a total of 16 words, the first word of each basic frame is used to transmit control words, and the remaining 15 words are used to transmit IQ data; different CPRI line rates, word bit widths are inconsistent, given in the figure An example of an 8-bit bit width.

The 2.0 and earlier CPRI protocols only support UMTS (Chinese: Universal Mobile Telecommunications System). The CPRI basic frame rate is designed in integer multiples of the UMTS IQ data rate. The IQ mapping method is very simple, and each basic frame carries 1 Chip data. 3.0 The CPRI protocol adds WiMAX (Chinese: World Interoperability for Microwave Access), and the IQ data rate is a non-integer multiple of the basic frame rate. For this reason, the IQ mapping method of the 3.0 protocol is shown in Figure 3: Find the appropriate integers K and S so that every K basic frames carry exactly S samples, thus forming an AxC Container block.

With the introduction of LTE (Chinese: Long Term Evolution), there are more and more scenarios of multiple wireless standards or multiple service bandwidths. The process of mapping IQ data to CPRI transmission resources in AxC container granularity. The size of the AxC container is different, that is, the granularity of resource allocation is different, and therefore, resource fragmentation is easily generated, and the transmission resource cannot be fully utilized.

Summary of the invention

The embodiments of the present invention provide a resource allocation method, a data transmission method, and a corresponding device and system, which are used to solve the technical problem that the transmission resources cannot be fully utilized in the prior art.

In a first aspect, a resource allocation method is provided for allocating a common public radio interface CPRI resource in a process of bearer establishment, the method comprising:

The wireless device controller REC determines the size of the data transmission unit of the bearer to be established;

The REC determines the distribution and size of available CPRI resources;

The REC is configured according to a size of the data transmission unit and a distribution and size of the available CPRI resources, where a size of the available CPRI resource is greater than or equal to a resource required by the data transmission unit. a size of the CPRI resource for the data transmission unit, wherein the CPRI resource allocated for the data transmission unit includes at least two discretely distributed resource blocks, and the size of the at least two discretely distributed resource blocks The sum is equal to the size of the resource required by the data transmission unit.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the distribution and size of the available CPRI resources are: the available CPRI resources include two or more discretely distributed resource regions, and each The size of the resource regions is smaller than the size of the resources required by the data transmission unit; and each of the at least two discretely distributed resource blocks is located within one resource region.

In conjunction with the first possible implementation of the first aspect, in a second possible implementation of the first aspect, the distribution of the at least two discretely distributed resource blocks minimizes fragmentation of remaining available CPRI resources.

In conjunction with the first possible implementation of the first aspect, in a third possible implementation of the first aspect, the at least two discretely distributed resource blocks occupy as few of the resource regions as possible.

In conjunction with the first aspect, or the first possible implementation of the first aspect, to any one of the third possible implementations of the first aspect, in a fourth possible implementation of the first aspect, After the REC allocates the CPRI resource to the data transmission unit, the method further includes:

The REC maps data carried by the bearer to a CPRI resource allocated for the data transmission unit.

In combination with the first aspect, or the first possible implementation of the first aspect, to any one of the fourth possible implementations of the first aspect, in a fifth possible implementation of the first aspect, After the REC allocates the CPRI resource to the data transmission unit, the method further includes:

The REC will send the starting location and size of each resource block allocated for the data transmission unit to the wireless device RE.

In conjunction with the first aspect, or the first possible implementation of the first aspect, to any one of the fifth possible implementations of the first aspect, in a sixth possible implementation of the first aspect, The data transmission unit is an antenna carrier AxC container.

In a second aspect, a data transmission method is provided, including:

The wireless device RE receives the general public allocated for the bearer transmitted by the wireless device controller REC. a line interface CPRI resource information, where the CPRI resource information includes a starting position and a size of at least two discretely distributed resource blocks that the REC will allocate for the bearer, wherein the at least two discretely distributed resource blocks The sum of the sizes is equal to the size of the resources required by the data transmission unit;

The RE receives data sent by the REC on each resource block according to the CPRI resource information, and combines and transmits data on all resource blocks to the terminal; and/or the RE receives the bearer from the terminal. Carrying data, and using the resource block allocated by the REC for the bearer, sending data carried by the bearer to the REC.

In a third aspect, a resource allocation apparatus is provided, including:

a first determining unit, configured to determine a size of a data transmission unit of the bearer to be established;

a second determining unit, configured to determine a distribution and a size of available CPRI resources;

a resource allocation unit, configured to: according to a size of the data transmission unit and a distribution and size of the available CPRI resource, when the size of the available CPRI resource is greater than or equal to a size of a resource required by the data transmission unit, The data transmission unit allocates a CPRI resource, wherein the CPRI resource allocated for the data transmission unit includes at least two discretely distributed resource blocks, and a sum of sizes of the at least two discretely distributed resource blocks is equal to the The size of the resource required by the data transfer unit.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the distribution and size of the available CPRI resources are: the available CPRI resources include two or more discretely distributed resource regions, and each The size of the resource regions is smaller than the size of the resources required by the data transmission unit; and each of the at least two discretely distributed resource blocks is located within one resource region.

In conjunction with the first possible implementation of the third aspect, in a second possible implementation of the third aspect, the distribution of the at least two discretely distributed resource blocks minimizes fragmentation of remaining available CPRI resources.

In conjunction with the first possible implementation of the third aspect, in a third possible implementation of the third aspect, the at least two discretely distributed resource blocks occupy as few of the resource regions as possible.

With reference to the third aspect, or the first possible implementation manner of the third aspect, to any one of the third possible implementation manners of the third aspect, in a fourth possible implementation manner of the third aspect, Includes:

And a data mapping unit, configured to map data carried by the bearer to a CPRI resource allocated for the data transmission unit.

With reference to the third aspect, or the first possible implementation manner of the third aspect, to any one of the fourth possible implementation manners of the third aspect, in a fifth possible implementation manner of the third aspect, include:

And a sending unit, configured to send, to the wireless device RE, a starting location and a size of each resource block allocated for the data transmission unit.

With reference to the third aspect, or the first possible implementation manner of the third aspect, to any one of the fifth possible implementation manners of the third aspect, in a sixth possible implementation manner of the third aspect, The data transmission unit is an antenna carrier AxC container.

In a fourth aspect, a data transmission apparatus is provided, including:

An interface unit, configured to communicate with a wireless device controller REC;

a transceiver unit for communicating with the terminal;

a processing unit, configured to receive, by using the interface unit, a common public radio interface (CPRI) resource information that is sent by the REC to be a bearer, where the CPRI resource information includes at least two discrete distributions that the REC will allocate for the bearer a starting position and a size of the resource block, wherein a sum of sizes of the at least two discretely distributed resource blocks is equal to a size of a resource required by the data transmission unit;

The processing unit is further configured to: according to the CPRI resource information, receive, by using the interface unit, data that is sent by the REC on each resource block, and combine data on all resource blocks to be sent by using the transceiver unit And receiving, by the transceiver unit, the data carried by the bearer from the terminal, and transmitting, by using the resource block allocated by the REC, the data carried by the bearer to the Said REC.

A fifth aspect provides a resource allocation system, including: a wireless device controller REC, a wireless device RE, and a terminal, wherein the REC and the RE communicate through a universal public wireless interface CPRI, and the RE and the terminal communicate through a wireless interface, and

The REC includes any of the foregoing third aspect or the third aspect of the possible implementation resource allocation The device, the RE, includes the data transmission device of the aforementioned fourth aspect.

One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

In the embodiment of the present invention, the REC allocates CPRI resources for the data transmission unit according to the size of the data transmission unit and the distribution and size of the available CPRI resources, and at least two discretely distributed resource blocks included in the CPRI resources allocated for the data transmission unit. The sum of the sizes is equal to the size of the resources required by the data transmission unit, so that the data transmission unit is transmitted by using at least two discretely distributed resource blocks, and the discretely distributed resource blocks are fully utilized, thereby improving the utilization of the transmission resources.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying for inventive labor.

1 is a schematic structural diagram of a conventional base station;

2 is a schematic structural diagram of a transmission resource in a frame form in a CPRI specification;

3 is a schematic diagram of an IQ mapping method of the 3.0 protocol;

4 is a schematic diagram of an application scenario according to an embodiment of the present invention;

FIG. 5 is a flowchart of a resource allocation method according to an embodiment of the present invention;

6 is a first schematic diagram of available CPRI resources in an embodiment of the present invention;

FIG. 7 is a second schematic diagram of available CPRI resources in an embodiment of the present invention; FIG.

FIG. 8 is a detailed flowchart of a resource allocation method according to an embodiment of the present invention;

9 is a schematic diagram of a mapping manner of an AxC container when two cells are initially established in the prior art;

10 is a schematic diagram of available CPRI resources after cell spectrum0 cell expansion in the prior art;

11 is a schematic diagram of reallocating CPRI resources after cell spectrum expansion of a cell in the prior art;

FIG. 12 is a diagram showing allocation of CPRI resources after spectrum expansion of cell cell0 according to an embodiment of the present invention; intention;

FIG. 13 is a flowchart of a data transmission method according to an embodiment of the present invention;

FIG. 14 is a block diagram of a resource allocation apparatus according to an embodiment of the present invention;

FIG. 15 is a structural diagram of a resource allocation apparatus according to an embodiment of the present invention;

FIG. 16 is a block diagram of a data transmission apparatus according to an embodiment of the present invention;

FIG. 17 is a structural diagram of a data transmission apparatus according to an embodiment of the present invention;

FIG. 18 is a schematic diagram of a resource allocation system according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the existing CPRI protocol, the resource allocation of IQ data is in units of AxC containers. With the development of communication technologies and the introduction of multiple service bandwidths, resource allocation schemes based on AxC containers often lead to fragmentation of CPRI resources. These fragmented resources are often unusable. For example, when a new cell (or new carrier) or cell spectrum is extended, the fragmented resources cannot be used, and the resources need to be reconstructed before new or spectrum expansion can be performed. At this time, the service of the established cell needs to be interrupted, causing the user's service to be interrupted and the experience to be poor.

In view of the above problems, the embodiment of the present invention adopts a scheme of AxC container block transmission, that is, an AxC container can be divided into multiple sub-blocks, thereby fully utilizing the fragmented resources to improve the utilization of the CPRI resources and avoid user service interruption. Improve the user experience.

First, the terms used in this application are described as follows:

Data transmission unit: The unit of data transmission between two devices communicating through CPRI, that is, the data is mapped to the unit on the CPRI resource. The data transmission unit is, for example, an AxC container.

Resource area: A resource area consisting of continuously distributed CPRI resources.

Resource block: A piece of resource consisting of continuously distributed CPRI resources, which is a subset of the resource area.

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Please refer to FIG. 4 , which is a schematic diagram of an application scenario according to an embodiment of the present invention. As shown in FIG. 4, the present invention relates to RECs and REs, wherein RECs and REs can be baseband portions and radio frequency portions of a base station, respectively, and RECs and REs communicate via CPRI. In an example of the present invention, a resource allocation unit is introduced for implementing allocation of CPRI resources for the carrier when the carrier is established, for example, resource allocation for a data transmission unit (e.g., AxC container) for each carrier. The resource allocation result is notified to the REC and the RE, the REC performs data mapping according to the resource allocation result, and the RE performs demapping of the data according to the resource allocation result.

It should be noted that the resource allocation unit may be a device that is independently set on the REC side, and is collectively referred to as a REC on the other REC side; or may be integrated in other REC-side devices, and the present application does not impose any limitation.

In the process of resource allocation, the resource allocation unit no longer allocates resources according to a granularity of data transmission units, but can split the available CPRI resources into at least two parts according to the distribution and size of the available CPRI resources. At least two discrete CPRI resource blocks. Therefore, the fragmented resources are fully utilized to improve the utilization of the CPRI resources, and the user service interruption is avoided, and the user experience is improved. In the resource allocation process, if there is a resource area in the available CPRI resource that satisfies the data transmission unit requirement, the data transmission unit may not be split, and the data transmission unit is used as the granularity for resource allocation, so that it can be compatible with the prior art. . Of course, you can still do the splitting and allocate resources at a smaller granularity. This application does not limit the application.

The resource allocation process will be described in detail below with reference to FIG.

Please refer to FIG. 5. FIG. 5 is a flowchart of a resource allocation method according to an embodiment of the present invention, where the method is used to allocate a CPRI resource in a process of establishing a bearer. Including the following steps:

Step 201: The REC determines the size of the data transmission unit of the bearer to be established.

Step 202: The REC determines the distribution and size of available CPRI resources.

Step 203: The REC allocates a CPRI resource to the data transmission unit according to the size of the data transmission unit and the distribution and size of the available CPRI resources.

In the above step 201, the data transmission unit is an AxC container, and the REC can be based on the cell band. The parameters such as the width and the number of antennas determine the size of the data transmission unit, and thus the size of the resources required for the AxC container.

In the above step 202, the REC determines the distribution and size of available CPRI resources. The available CPRI resources refer to the unassigned CPRI resources. That is to say, some CPRI resources in all CPRI resources have been allocated by the REC. The available CPRI resources refer to all CPRI resources except the CPRI resources that have been allocated. CPRI resources. The distribution of available CPRI resources can be continuous or discrete. When the available CPRI resources are discretely distributed, at least two resource regions are included therein. The following description is based on the premise that the available CPRI resources can meet the requirements of the data transmission unit, that is, the size of the CPRI resource is greater than or equal to the size of the resource required by the data transmission unit; when the available CPRI resources are discretely distributed, The sum of the sizes of all resource regions included in the available CPRI resources is greater than or equal to the size of the resources required by the data transmission unit.

According to the comparison between the size of the resource area included in the available CPRI resources and the size of the resources required by the data transmission unit, the available CPRI resources have the following two cases:

In the first case, the resource area included in the available CPRI resource includes a resource area whose size is greater than or equal to the size of the resource required by the data transmission unit.

Please refer to FIG. 6. FIG. 6 is a first schematic diagram of available CPRI resources. The available CPRI resources in FIG. 6 include resource areas S0 and S1, where the size of S0 is greater than the size of the resources required by the data transmission unit, and the size of S1 is smaller than the size of the resources required by the data transmission unit. Figure 6 also shows the size of the resources required for the data transmission unit. As can be seen from Figure 6, the size of the resource area S0 included in the available CPRI resources is larger than the size of the resources required by the data transmission unit. A resource block of a size equal to the size of the resource required by the data transmission unit is determined in the area S0, and then the resource block is allocated to the data transmission unit.

The second case is: the resource area included in the available CPRI resources, the size of all the resource areas cannot meet the requirements of the data transmission unit, and the CPRI resources can be composed of two or more discretely distributed resource areas, each resource area. The size of the resource is smaller than the size of the resource required by the data transmission unit. At this time, some or all of the resources in each resource area may be allocated to the data transmission unit.

Please refer to FIG. 7. FIG. 7 is a second schematic diagram of available CPRI resources. Figure 7 shows the available CPRI The resource includes five resource areas as an example, and the five resource areas are respectively S0 to S4. As shown in FIG. 7, five resource areas are discretely distributed, and FIG. 7 also shows the size of resources required for the data transmission unit. As can be seen from FIG. 7, the size of each of the five resource regions is smaller than the size of the resources required by the data transmission unit, and some or all of the five resource regions may be allocated to the data transmission unit.

In the above step 203, the REC allocates CPRI resources for the data transmission unit according to the size of the data transmission unit and the distribution and size of the available CPRI resources. Please refer to FIG. 8. FIG. 8 is a detailed flowchart of a resource allocation method according to an embodiment of the present invention. The method includes

steps

201 and 202 of FIG. 5, and further includes the following steps:

Step 2031: Determine whether a resource region whose size is greater than or equal to a size of a resource required by the data transmission unit is included in all resource regions included in the available CPRI resource.

Step 2032: When a resource region having a size greater than or equal to a size of a resource required by a data transmission unit is included, one resource block in the resource region is allocated to the data transmission unit, and the size of the resource block is equal to the data. The size of the resources required to transmit the unit;

Step 2033: When the available CPRI resource includes two or more discretely distributed resource regions, the size of all the resource regions is greater than or equal to the size of the data transmission unit, and the size of each resource region is smaller than the size. When the size of the resource required by the data transmission unit is different, the resource transmission unit is allocated resource blocks in at least two resource areas, and the sum of the sizes of the at least two resource blocks is equal to the resource required by the data transmission unit. the size of. That is, the CPRI resource allocated for the data transmission unit includes at least two discretely distributed resource blocks, and the sum of the sizes of the at least two discretely distributed resource blocks is equal to the size of the resources required by the data transmission unit.

After the REC allocates the CPRI resources for the data transmission unit, after performing

step

2032 or 2033, the following steps can be performed:

Step 204: The REC sends the start position and size of each resource block allocated for the data transmission unit to the RE.

In this way, the same data mapping and demapping rules can be followed between the REC and the RE.

Specifically, when all resource regions of the available CPRI resources include a size larger than or equal to a resource required by the data transmission unit, the REC may directly equal the size of the resource region. A resource block of the resource size required for the input unit is allocated to the data transmission unit. Optionally, the REC also sends the resource block allocated to the data transmission unit to the RE in the starting position and size of the resource area. Of course, the size of the resource block allocated to the data transmission unit may not be transmitted. In this case, the size of the resource block allocated by default to the data transmission unit is equal to the size of the resource block required by the data transmission unit.

For example, the REC determines that the size of the resource in the resource area S0 in FIG. 6 is greater than or equal to the size of the resource required by the data transmission unit according to the size of the data transmission unit and the distribution and size of the available CPRI resources, and the REC will allocate the resource area S0. A resource block within a size equal to the size of the resource required by the data transmission unit is allocated to the data transmission unit, such that the CPRI resource allocated for the data transmission unit is a resource within the resource area S0 equal to the resource required by the data transmission unit. The size of the resource block. Optionally, the REC further sends the resource block allocated for the data transmission unit to the SE in the starting position and size in the resource area S0.

When the available CPRI resources are composed of two or more discretely distributed resource regions, and the size of each resource region is smaller than the size of the resource required by the data transmission unit, the CPRI resources allocated for the data transmission unit are located at least two. In the resource area, correspondingly, the CPRI resource allocated by the REC for the data transmission unit is composed of at least two discretely distributed resource blocks, and the sum of the sizes of the at least two discretely distributed resource blocks is equal to the resource required by the data transmission unit. the size of. Optionally, the REC also sends the starting position and size of each resource block allocated to the data transmission unit to the RE.

For example, the REC determines that the sum of the sizes of the resources in the resource areas S0 and S1 in FIG. 7 is equal to the size of the resources required by the data transmission unit according to the size of the data transmission unit and the distribution and size of the available CPRI resources. The resources in S0 and S1 are allocated to the data transmission unit. Thus, the CPRI resources allocated for the data transmission unit include two discretely distributed resource blocks, which are resources in the resource areas S0 and S1, respectively. Optionally, the REC also sends the starting location and size of the resource areas S0 and S1 to the RE.

In the process of resource allocation, a resource allocation strategy can also be set to further increase the beneficial effects of resource allocation. For example, the resource allocation is controlled by minimizing the fragmentation of the remaining available CPRI resources; for example, the resource allocation is controlled by occupying as few resource areas as possible; of course, the two strategies can also be used in combination. REC performs different resource allocation strategies for data transmission The CPRI resources allocated by the delivery unit are different.

In the first strategy, the at least two discretely distributed resource blocks occupy as few of the resource regions as possible. The implementation of the first strategy may be, for example, the following, of course, which is merely an example and is not intended to limit the implementation of such a strategy:

The REC preferentially allocates the resources in the largest resource area to the data transmission unit; then determines the amount of resources required by the data transmission unit, and continues to select the resource area according to the size of the remaining unoccupied resource areas. If there is a resource area in the remaining resource area that can satisfy the requirement of the missing part of the resource required by the data transmission unit, allocate resources for the data transmission unit in the resource area; if there is more than one resource area, follow the fragmentation The principle of minimization can choose the smallest resource area. Of course, you can also choose one resource area. If none of the remaining resource areas can satisfy the requirement of the missing part of the resources required by the data transmission unit, the above steps are repeated, and resources are continuously allocated for the data transmission unit from the remaining maximum resource area. As such, the data transmission unit includes at least two discretely distributed resource blocks occupying a smaller number of resource regions.

Taking FIG. 7 as an example, the CPRI resource includes five resource areas, five resource areas are S0 to S4, and the size order is S0, S1, S3, S2, and S4. First, allocate the resources of S0 to the data transmission unit, and then determine whether there are resource areas in S1 to S4 that satisfy the remaining resource requirements. If only S1 meets the demand, allocate the resources in S1 to the data transmission unit; if there is more than one resource area To meet the demand, allocate any resource within the resource that meets the demand to the data transmission unit, or select the smallest resource area that meets the requirement as the resource allocation object. For another example, the REC first finds the largest and second largest resource regions from the respective resource regions constituting the available CPRI resources, calculates the sum of the resources in the two resource regions, and the size of the resources required by the data transmission unit. Comparing, if the sum of the resources in the two resource zones is greater than or equal to the size of the resources required by the data transmission unit, the resources in the two resource zones are allocated to the data transmission unit, otherwise, the third largest resource is found. Zone, calculating the sum of the resources of the largest and the second largest and the third largest resource zone, if the sum of the resources in the three resource zones is greater than or equal to the size of the resource required by the data transmission unit, then the three The resources in the resource area are allocated to the data transmission unit, otherwise, the steps of repeating and finding the third largest resource area are repeated until the sum of the resources in all the resource areas found is greater than or equal to the size of the resource required by the data transmission unit. Will find The resources in the resource area are allocated to the data transmission unit.

Taking FIG. 7 as an example, the CPRI resource includes five resource regions, and the five resource regions are respectively S0 to S4, and the sizes of the resource regions S0 and S1 in the five resource regions are respectively the largest and the second largest, respectively, if the resource regions S0 and S1 are within The sum of the sizes of the resources is greater than or equal to the size of the resources required by the data transmission unit, and the resources in the resource areas S0 and S1 are allocated to the data transmission unit, otherwise, the third largest resource area S3 among the five resource areas is found. If the sum of the sizes of the resources in the resource areas S0 and S1 and S3 is greater than or equal to the size of the resources required by the data transmission unit, the resources in the resource areas S0 and S1 and S3 are allocated to the data transmission unit.

In the second strategy, the distribution of the at least two discretely distributed resource blocks minimizes fragmentation of the remaining available CPRI resources. The implementation of the second policy may be, for example, the following, which is merely an example and is not intended to limit the implementation of the policy: for example, the REC according to the size of the data transmission unit and the distribution and size of the available CPRI resources, according to the available CPRI resources. The two or more discretely distributed resource regions are included in a small to large order, and CPRI resources are allocated for the data transmission unit. Since the resources in the smaller resource area are preferentially allocated to the data transmission unit, all the resources in the smaller resource area are allocated to the data transmission unit as much as possible, and the remaining resource fragments are less, and the CPRI resource is allocated to the data transmission unit. The remaining resource area is as large as possible.

The REC first finds the minimum and the second small resource regions from the respective resource regions constituting the available CPRI resources, calculates the sum of the resources in the two resource regions, and compares with the size of the resources required by the data transmission unit, if If the sum of the resources in the two resource areas is smaller than the size of the resources required by the data transmission unit, the third small resource area is continuously found, and the sum of the resources in the three resource areas of the minimum and the second and the third smallest is calculated. If the sum of the resources in the three resource areas is greater than or equal to the size of the resources required by the data transmission unit, allocate resources in the three resource areas to the data transmission unit, otherwise, repeat and find the third small The step of the resource area, until the sum of the resources in all the resource areas found is greater than or equal to the size of the resources required by the data transmission unit, and the resources in the found resource area are allocated to the data transmission unit.

Taking FIG. 7 as an example, the CPRI resource includes five resource regions, five resource regions are S0 to S4, and the resource regions S2 and S4 in the five resource regions are respectively smallest and second smallest, if the resource regions S2 and S4 are respectively. If the sum of the sizes of the resources within the resource is smaller than the size of the resources required by the data transmission unit, the resource region S3 having the third smallest size among the five resource regions is found, and if the sum of the resources in the resource regions S2 and S4 and S3 is If the size of the resource required by the data transmission unit is greater than or equal to, the resources in the resource areas S2 and S4 and S3 are allocated to the data transmission unit.

Comparing the first strategy and the second strategy, in the first strategy, the resource blocks allocated to the data transmission unit are resource blocks in the resource areas S0 and S1, and the number of resource areas occupied by the data transmission unit is 2, and the remaining available The CPRI resources include: a resource area S2 to a resource area S4, and may of course include some resources in the resource area S1. In the second strategy, the resource blocks allocated to the data transmission unit are resource blocks in the resource areas S2 and S4 and S3, the number of resource areas occupied by the data transmission unit is 3, and the remaining available CPRI resources include: resource areas S0 and S1. Of course, it may also include some resources in the resource area S3. Obviously, the first strategy occupies a small number of resource areas, while the second strategy has less fragmentation of available CPRI resources.

The LTE cell spectrum extension is taken as an example to illustrate the beneficial effects of the resource allocation method provided by the embodiment of the present invention.

Suppose there are two cells, cell0 and cell1, whose bandwidth is 10MHz and 20MHz respectively, and the I/Q bit width is 15bit, and the oversampling rate factors are 4 and 8, respectively. The two cells are transmitted on an interface with a CPRI rate of 4.9152 Gbps. The mapping mode of the AxC container when the two cells are initially established is as shown in FIG. 9.

When the cell0 spectrum is extended, the 20 MHz cell can be established. When the cell cell0 is initially established, the CPRI resource mapped by the AxC container becomes the available CPRI resource. At this time, the available CPRI resource includes two discretely distributed resource regions, as shown in FIG.

Cell0 changes the size of the AxC container due to spectrum expansion, and the granularity of the corresponding resource allocation changes. In the prior art, in order to rebuild the cell 0, the solution is to deactivate the cell 1 and then re-perform the resource allocation shown in FIG. 11 to reconstruct the cell 0. However, deactivating the cell 1 may cause the cell 1 service to be interrupted.

In the embodiment of the present invention, for the available CPRI resources shown in FIG. 10, the two discretely distributed resource regions included in the CPRI resource are allocated to the data transmission unit of cell0, as shown in FIG. 12, and the cell 1 is not implemented. Under the premise of business interruption, the use of resource debris has been fully utilized and the transmission resources have been improved. Source utilization.

In the embodiment of the present invention, in order to use the CPRI resource to transmit data, after the REC allocates the CPRI resource for the data transmission unit, the following steps may be performed:

The REC maps data carried by the bearer to a CPRI resource allocated for the data transmission unit. Wherein, the data is IQ data.

Specifically, when the REC is a resource block in a resource area whose size is greater than or equal to the size of the data transmission unit, the REC may directly map the data carried by the bearer to the resource block. . For details on how to map, refer to the prior art, and details are not described herein again.

When the available CPRI resource is composed of two or more discretely distributed resource regions, and the size of each resource region is smaller than the size of the resource required by the data transmission unit, the REC first determines at least two allocated data transmission units. The size of the data that can be transmitted by each resource block in the discretely distributed resource blocks, and then splits the data carried by the bearer according to the size of the data that can be transmitted by each resource block, and maps the divided data to corresponding data respectively. On the resource block. A possible implementation manner is: splitting the data carried by the bearer in the order from LSB (Chinese: Least Significant Bit) to MSB (Chinese: Most Significant Bit) And mapping the data carried by the bearer in the order from the going to the back.

Based on the same inventive concept, an embodiment of the present invention further provides a data transmission method. Please refer to FIG. 13. FIG. 13 is a flowchart of a data transmission method according to an embodiment of the present invention. As shown in FIG. 13, the method includes the following steps:

Step 301: The wireless device RE receives the general public radio interface (CPRI) resource information that is allocated by the radio equipment controller REC, and the CPRI resource information includes at least two discretely distributed resources that the REC will allocate for the bearer. a starting position and a size of the block, wherein a sum of sizes of the at least two discretely distributed resource blocks is equal to a size of a resource required by the data transmission unit;

Step 302: The RE receives the data sent by the REC on each resource block according to the CPRI resource information, and sends the data on all resource blocks to the terminal in combination; and/or the RE The data carried by the bearer is received by the terminal, and the data carried by the bearer is sent to the REC by using the resource block allocated by the REC for the bearer.

As described in the foregoing description of the resource allocation method, the REC sends the start position and size of each resource block allocated for the data transmission unit to the RE. Therefore, for the RE, step 301 is performed, and the RE can receive The CPRI resource information allocated for the bearer sent to the REC.

The CPRI resource information includes a starting location and a size of the at least two discretely distributed resource blocks when the REC includes at least two discretely distributed resource blocks for the allocated CPRI resources.

For example, the REC determines that the sum of the sizes of the resources in the resource areas S0 and S1 in FIG. 7 is equal to the size of the resources required by the data transmission unit, and the REC allocates the resources in the resource areas S0 and S1 to the data transmission unit. The CPRI resource allocation information that the RE will receive is: the starting position and size of the resource areas S0 and S1.

Then, the RE can use the CPRI resource allocation information to complete data transmission in the uplink or downlink direction:

In the downlink direction, the RE receives the data sent by the REC on each resource block according to the CPRI resource allocation information, and then combines the received data into one complete data transmission unit, and then sends the data transmission unit to the terminal.

Specifically, since the REC maps the data carried by the bearer to the CPRI resource allocated for the data transmission unit, each resource block included in the CPRI resource has a part of the data transmission unit, and the RE uses the data on each resource block. Combine them to get a complete data transmission unit and send it to the terminal. A possible implementation manner is: if the REC splits the data carried by the bearer in the order from the LSB to the MSB, the RE combines the data carried by the bearer in the order from the LSB to the MSB, if the REC pairs are carried. The carried data is mapped in the order from the going to the end, and the RE will demap the data carried by the bearer in the order from the going to the back.

In the uplink direction, the RE receives the data carried by the bearer from the terminal, and then uses the REC to allocate the allocated resource block, and sends the data carried by the bearer to the REC.

Specifically, after the receiving terminal uses the data sent by the bearer, the RE needs to forward the data sent by the terminal to the REC. At this time, the RE may determine, according to the resource allocation information, that the REC is allocated for the bearer. The size of the at least two discretely distributed resource blocks included in the CPRI resource, and then splitting the data received from the terminal according to the size of the data that can be transmitted by each resource block, and mapping the split data to the corresponding resources respectively. On the block, the resource block is used to send data to the REC.

Based on the same inventive concept, an embodiment of the present invention provides a resource allocation apparatus. The resource allocation apparatus is located on the REC side, and may be independent of an existing REC side device or may be located in an existing REC side device.

Please refer to FIG. 14. FIG. 14 is a block diagram of a resource allocation apparatus. The resource allocation apparatus includes: a first determining unit 901, a second determining unit 902, and a resource allocating unit 903.

a first determining unit 901, configured to determine a size of a data transmission unit of the bearer to be established;

a second determining unit 902, configured to determine a distribution and a size of available CPRI resources;

The resource allocation unit 903 is configured to: according to the size of the data transmission unit and the distribution and size of the available CPRI resources, when the size of the available CPRI resource is greater than or equal to the size of the resource required by the data transmission unit, A CPRI resource is allocated for the data transmission unit.

The resource allocation unit 903 is allocated in the same manner as the above method embodiment. For example, reference may be made to FIG. 8. Preferably, in the resource allocation process, resource allocation is no longer performed at a granularity of data transmission units, but may be split into at least two parts according to the distribution and size of available CPRI resources, that is, at least Two discrete CPRI resource blocks. Therefore, the fragmented resources are fully utilized to improve the utilization of the CPRI resources, and the user service interruption is avoided, and the user experience is improved. At this time, the CPRI resource allocated for the data transmission unit includes at least two discretely distributed resource blocks, and the sum of the sizes of the at least two discretely distributed resource blocks is equal to the resources required by the data transmission unit. size.

In the resource allocation process, if there is a resource area in the available CPRI resource that satisfies the data transmission unit requirement, the data transmission unit may not be split, and the data transmission unit is used as the granularity for resource allocation, so that it can be compatible with the prior art. . Of course, you can still do the splitting and allocate resources at a smaller granularity. This application does not limit the application.

Preferably, the foregoing method for allocating resources at a smaller granularity is applicable to a scenario in which the distribution and size of available CPRI resources are as follows: the available CPRI resources include two or more discretely distributed resource regions, and each resource The size of the area is smaller than the size of the resource required by the data transmission unit; And each of the at least two discretely distributed resource blocks is located in one resource region.

With the above method embodiments, in the process of resource allocation, a resource allocation strategy may also be set to further increase the beneficial effects of resource allocation. For example, the resource allocation is controlled by minimizing the fragmentation of the remaining available CPRI resources; that is, the distribution of the at least two discretely distributed resource blocks minimizes fragmentation of the remaining available CPRI resources. For another example, the resource allocation is controlled by occupying as few resource areas as possible; that is, the at least two discretely distributed resource blocks occupy as few of the resource areas as possible. Of course, these two strategies can also be combined.

In combination with the foregoing embodiments, the foregoing resource allocation apparatus may further include:

The data mapping unit 904 is configured to map data carried by the bearer to a CPRI resource allocated for the data transmission unit.

The interface unit 905 is configured to send a starting location and a size of each resource block allocated for the data transmission unit to the wireless device RE.

In combination with the above embodiments, the data transmission unit is an antenna carrier AxC container.

The interface unit 905 in this embodiment may be an interface circuit for the REC to communicate with the RE, such as a CPRI interface circuit. The resource allocation unit 903 may be a separately set processor, or may be integrated in an existing processor of the REC, or may be stored in the memory of the REC in the form of program code, by a processor of the REC. The function of the resource allocation unit 903 is called and executed. The implementation of the first determining unit 901, the second determining unit 902, and the data mapping unit 904 may adopt any one of the resource allocation units 903, and all of the units may be integrated in whole or in part, or may be implemented independently. The processor described herein may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention. . Please refer to FIG. 15. FIG. 15 is a structural diagram of a resource allocation apparatus. The resource allocation apparatus includes a memory 1101, a processor 1102, and an interface circuit 1103.

The memory 1101 is configured to store an instruction required by the processor 1102 to perform a task;

The processor 1102 is configured to execute the instruction, and perform any resource division of the foregoing method embodiment. Matching method. For example, determining the size of the data transmission unit of the bearer to be established; determining the distribution and size of the available CPRI resources; and the size of the available CPRI resources according to the size of the data transmission unit and the distribution and size of the available CPRI resources. When the size of the resource required by the data transmission unit is greater than or equal to, the CPRI resource is allocated for the data transmission unit.

The processor 1102 allocates resources in the same manner as the above method embodiment. For example, reference may be made to FIG. 8. Preferably, in the resource allocation process, resource allocation is no longer performed at a granularity of data transmission units, but may be split into at least two parts according to the distribution and size of available CPRI resources, that is, at least Two discrete CPRI resource blocks. Therefore, the fragmented resources are fully utilized to improve the utilization of the CPRI resources, and the user service interruption is avoided, and the user experience is improved. At this time, the CPRI resource allocated for the data transmission unit includes at least two discretely distributed resource blocks, and the sum of the sizes of the at least two discretely distributed resource blocks is equal to the resources required by the data transmission unit. size.

The policy of the resource allocation, the mapping of the data after the allocation, and the transmission of the allocation information are the same as those in the above embodiments, and are not described herein again. It should be noted that the processor herein may be a processor or a collective name of multiple processing elements. For example, the processor may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention. For example, one or more digital singal processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs).

The memory may be a storage device or a collective name for a plurality of storage elements and used to store executable program code. And the memory may include random access memory (RAM), and may also include non-volatile memory such as a magnetic disk memory, a flash memory, or the like.

Based on the same inventive concept, an embodiment of the present invention provides a data transmission device, where the data transmission device may be any RE device as described in the previous embodiment. Preferably, the RE device may be It is the RE device corresponding to the flow of FIG.

Please refer to FIG. 16. FIG. 16 is a block diagram of a data transmission apparatus. The data transmission apparatus includes an interface unit 1201, a transceiver unit 1202, and a processing unit 1203.

An interface unit 1201, configured to communicate with a wireless device controller REC;

The transceiver unit 1202 is configured to communicate with the terminal;

The processing unit 1203 is configured to receive, by using the interface unit, the common public radio interface (CPRI) resource information that is sent by the REC and that is allocated by the REC, and perform data transmission in an uplink or downlink direction according to the CPRI resource information.

Taking the CPRI resource information as an example of a starting position and a size of at least two discretely distributed resource blocks allocated by the REC for the bearer, wherein a sum of sizes of the at least two discretely distributed resource blocks is equal to The size of the resource required by the data transmission unit; the processing unit 1203, configured to receive, according to the CPRI resource information, the data sent by the REC on each resource block by using the interface unit, and Data merging is sent to the terminal by the transceiver unit; or the data carried by the bearer is received by the transceiver unit from the terminal, and the resource block allocated by the REC for the bearer is used to carry the bearer Data is sent to the REC through the interface unit.

The interface unit 1201 in this embodiment may be an interface circuit for the RE to communicate with the REC, such as a CPRI interface circuit. The transceiver unit 1202 can be a transceiver that communicates with the terminal. The processing unit 1203 may be a separately set processor, or may be implemented in an existing processor of the RE. Alternatively, it may be stored in the memory of the RE in the form of program code, and is called by one processor of the RE. The function of the processing unit 1203 is executed. The processor described herein can be a CPU, or an ASIC, or one or more integrated circuits configured to implement embodiments of the present invention.

Please refer to FIG. 17. FIG. 17 is a block diagram of a data transmission apparatus. The data transmission apparatus includes a CPRI interface 1301, a wireless interface 1302, a processor 1303, and a memory 1304.

The memory 1304 is configured to store an instruction required by the processor 1303 to perform a task;

a CPRI interface 1301, configured to communicate with a wireless device controller REC;

a wireless interface 1302, configured to communicate with the terminal;

The processor 1303 is configured to execute the instruction, to receive, by using the CPRI interface 1301, CPRI resource information that is allocated by the REC for the bearer, and perform data transmission in an uplink or downlink direction according to the CPRI resource information.

For example, the CPRI resource information includes a starting position and a size of at least two discretely distributed resource blocks allocated by the REC for the bearer, where a sum of sizes of the at least two discretely distributed resource blocks is equal to the data. The size of the resource required by the transmission unit; the processor 1303 is configured to receive, according to the CPRI resource information, the data sent by the REC on each resource block through the CPRI interface 1301, and combine the data on all the resource blocks to be sent through the wireless interface 1302. The data carried by the bearer is received from the terminal through the radio interface 1302, and the data carried by the bearer is sent to the REC through the CPRI interface 1301 by using the resource block allocated by the REC for the bearer.

It should be noted that the processor herein may be a processor or a collective name of multiple processing elements. For example, the processor may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention. For example, one or more digital singal processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs).

Based on the same inventive concept, an embodiment of the present invention further provides a resource allocation system. Please refer to FIG. 18. FIG. 18 is a schematic diagram of a resource allocation system according to an embodiment of the present invention. The system includes:

a wireless device controller REC, a wireless device RE and a terminal, wherein the REC and the RE communicate via a universal public wireless interface CPRI, the RE and the terminal communicate via a wireless interface, and the REC includes any of the foregoing embodiments The resource allocation apparatus and the RE include the data transmission apparatus described in the foregoing embodiments.

The terminal may be a user equipment (UE, User Equipment), may also be called a mobile terminal (Mobile Terminal), a mobile user equipment, etc., and may be through a radio access network (RAN, Radio Access). Network) communicates with one or more core networks (CN, Core Network), such as a mobile phone or a computer with a mobile terminal, such as a portable, pocket, handheld, computer built-in or vehicle-mounted mobile device .

It should be noted that the device in the embodiment of the present invention is a device that is compatible with the method part. For some specific implementation manners of the device, reference may be made to the description of the method part.

It will be clearly understood by those skilled in the art that for the convenience and brevity of the description, only the division of each functional unit described above is exemplified. In practical applications, the above function assignment can be completed by different functional units as needed. The internal structure of the device is divided into different functional units to perform all or part of the functions described above. For the specific working process of the system, the device and the unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit or unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. You can choose some of them according to actual needs or All units are used to achieve the objectives of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a ROM (Read-Only Memory), a RAM (Random Access Memory), a disk or an optical disk, and the like, which can store program codes. .

The above embodiments are only used to describe the technical solutions of the present application in detail, but the description of the above embodiments is only for helping to understand the method and the core idea of the present invention, and should not be construed as limiting the present invention. Those skilled in the art will be able to devise variations or alternatives within the scope of the present invention within the scope of the present invention.

Claims

A resource allocation method, configured to allocate a common public radio interface CPRI resource in a process of bearer establishment, where the method includes:

The wireless device controller REC determines the size of the data transmission unit of the bearer to be established;

The REC determines the distribution and size of available CPRI resources;

The REC is the data according to the size of the data transmission unit and the distribution and size of the available CPRI resources, when the size of the available CPRI resource is greater than or equal to the size of the resource required by the data transmission unit. The transmission unit allocates a CPRI resource, wherein the CPRI resource allocated for the data transmission unit includes at least two discretely distributed resource blocks, and a sum of sizes of the at least two discretely distributed resource blocks is equal to the data transmission unit The size of the resources required.
The method according to claim 1, wherein the distribution and size of the available CPRI resources are: the available CPRI resources include two or more discretely distributed resource regions, and the size of each resource region is smaller than The size of the resource required by the data transmission unit; and each of the at least two discretely distributed resource blocks is located in one resource region.
The method of claim 2 wherein the distribution of the at least two discretely distributed resource blocks minimizes fragmentation of remaining available CPRI resources.
The method of claim 2 wherein said at least two discretely distributed resource blocks occupy as few of said resource regions as possible.
The method according to any one of claims 1 to 4, further comprising: after the REC allocates a CPRI resource to the data transmission unit, further comprising:

The REC maps data carried by the bearer to a CPRI resource allocated for the data transmission unit.
The method according to any one of claims 1 to 5, further comprising: after the REC allocates a CPRI resource to the data transmission unit, further comprising:

The REC will send the starting location and size of each resource block allocated for the data transmission unit to the wireless device RE.
The method according to any one of claims 1 to 6, wherein the data transmission unit is an antenna carrier AxC container.
A data transmission method, comprising:

The wireless device RE receives the general public radio interface CPRI resource information allocated by the wireless device controller REC for the bearer, where the CPRI resource information includes at least two discretely distributed resource blocks that the REC will allocate for the bearer. a start position and a size, wherein a sum of sizes of the at least two discretely distributed resource blocks is equal to a size of a resource required by the data transmission unit;

The RE receives data sent by the REC on each resource block according to the CPRI resource information, and combines and transmits data on all resource blocks to the terminal; and/or the RE receives the bearer from the terminal. Carrying data, and using the resource block allocated by the REC for the bearer, sending data carried by the bearer to the REC.
A resource allocation device, comprising:

a first determining unit, configured to determine a size of a data transmission unit of the bearer to be established;

a second determining unit, configured to determine a distribution and a size of available CPRI resources;

a resource allocation unit, configured to: according to a size of the data transmission unit and a distribution and size of the available CPRI resource, when the size of the available CPRI resource is greater than or equal to a size of a resource required by the data transmission unit, The data transmission unit allocates a CPRI resource, wherein the CPRI resource allocated for the data transmission unit includes at least two discretely distributed resource blocks, and a sum of sizes of the at least two discretely distributed resource blocks is equal to the The size of the resource required by the data transfer unit.
The resource allocation apparatus according to claim 9, wherein the distribution and size of the available CPRI resources are: the available CPRI resources include two or more discretely distributed resource regions, and each resource region The size is smaller than a size of a resource required by the data transmission unit; and each of the at least two discretely distributed resource blocks is located in one resource region.
The resource allocation apparatus according to claim 10, wherein the distribution of the at least two discretely distributed resource blocks minimizes fragmentation of remaining available CPRI resources.
A resource allocation device according to claim 10, wherein said at least two discrete The distributed resource blocks occupy as few of the resource areas as possible.
The resource allocation device according to any one of claims 9 to 12, further comprising:

And a data mapping unit, configured to map data carried by the bearer to a CPRI resource allocated for the data transmission unit.
The resource allocation device according to any one of claims 9 to 13, further comprising:

And a sending unit, configured to send, to the wireless device RE, a starting location and a size of each resource block allocated for the data transmission unit.
The resource allocation apparatus according to any one of claims 9 to 14, wherein the data transmission unit is an antenna carrier AxC container.
A data transmission device, comprising:

An interface unit, configured to communicate with a wireless device controller REC;

a transceiver unit for communicating with the terminal;

a processing unit, configured to receive, by using the interface unit, a common public radio interface (CPRI) resource information that is sent by the REC to be a bearer, where the CPRI resource information includes at least two discrete distributions that the REC will allocate for the bearer a starting position and a size of the resource block, wherein a sum of sizes of the at least two discretely distributed resource blocks is equal to a size of a resource required by the data transmission unit;

The processing unit is further configured to: according to the CPRI resource information, receive, by using the interface unit, data that is sent by the REC on each resource block, and combine data on all resource blocks to be sent by using the transceiver unit And receiving, by the transceiver unit, the data carried by the bearer from the terminal, and transmitting, by using the resource block allocated by the REC, the data carried by the bearer to the Said REC.
A resource allocation system, comprising: a wireless device controller REC, a wireless device RE, and a terminal, wherein the REC and the RE communicate through a universal public wireless interface CPRI, the RE and the terminal communicate through a wireless interface, and

The REC includes the resource allocation device according to any one of the preceding claims 9-15, and the RE includes the data transmission device according to claim 16.