CN111031551B

CN111031551B - System architecture based on centralized base station control surface

Info

Publication number: CN111031551B
Application number: CN201811173275.XA
Authority: CN
Inventors: 庞思远
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-10-09
Filing date: 2018-10-09
Publication date: 2021-08-06
Anticipated expiration: 2038-10-09
Also published as: CN111031551A

Abstract

The embodiment of the invention provides a system architecture based on a centralized base station control plane, which comprises the following components: the coordination control module is used for expanding the cell aiming at the inside or between the servers; the protocol processing module is used for receiving and/or forwarding the standard interface message and coding and/or decoding the standard interface message; the algorithm processing module is used for carrying out calculation processing aiming at a protocol algorithm and a base station optimization algorithm; the process control module is used for controlling a cell process, a paging process, an access process, a context management process and a bottom layer parameter configuration process; the public support module is used for providing public calling functions, log recording, timer maintenance, message receiving and sending and information inquiry; and the scene selection module is used for judging whether the current system is constructed into a centralized scene or a separated scene and selecting a corresponding scene strategy based on the judged scene. The embodiment of the invention provides a new system architecture which is generally used for two network elements of a CU and a DU.

Description

System architecture based on centralized base station control surface

Technical Field

The invention relates to the technical field of communication, in particular to a system architecture based on a centralized base station control plane.

Background

With the continuous evolution of wireless communication technology, the 5G technology is rapidly developed, in which the operator pays attention to the cloud of communication equipment, and the cloud mainly has the functions of reducing the operation cost, enhancing the universality of hardware equipment and more flexibly configuring hardware equipment according to scenes, so that for a base station side, how to compatibly and flexibly load and configure different network elements of an access network, and meanwhile, how to provide relatively optimal performance under different scenes is very serious examination on the implementation architecture of the base station.

A CU (Centralized Unit) -DU (Distributed Unit) separation architecture is a novel architecture generated based on flexible configuration considerations in a 5G context, and actually divides a Control plane and a user plane, and of course, it is decided to divide between a PDCP (Packet Data Convergence Protocol) layer and an RLC (Radio Link Control Protocol) layer from a scene consideration, that is, CUs are divided into CU-C and CU-U including RRC (Radio resource Control), RRM (Radio resource management) and PDCP (Radio resource Control), and a PHY (Physical layer) including RRM, RLC, MAC (Medium Access Control, media Access Control), and PHY (Physical layer). The DU may also require process control modules other than RRM for a specific implementation.

As shown in fig. 1, a control plane architecture for an existing base station is mainly composed of functional modules such as RRC, RRM, AP (application protocol), and MISC, where the RRC mainly supports the implementation of the functions of the RRC protocol, including cell, paging, system information, and RRC procedures; the RRM mainly supports the realization of algorithm functions of a base station, including resource allocation, admission control, load control, other algorithms and the like; the AP mainly supports the function realization of NGAP protocol, XNAP protocol, F1AP protocol and the like.

However, the existing base station implementing the control plane architecture mainly has the following disadvantages:

A) the functional division is not beneficial to the realization of the requirements of the CU-DU;

B) the process control angle RRC, RRM and AP respectively trigger and control the protocol process in different scenes, and particularly the RRC and AP maintain two sets of states which conflict with each other or one end of the RRC and the other end of the AP are abnormal passively in part of cases;

C) dynamic capacity expansion of the gNB under the cloud platform scene cannot be smoothly supported;

D) the adaptive matching process is not able to cope with the functional and performance needs of CU-DU integration and separation scenarios.

Disclosure of Invention

In view of the foregoing problems, embodiments of the present invention provide a system architecture based on a centralized control plane of a base station.

In order to solve the above problem, an embodiment of the present invention discloses a system architecture based on a centralized base station control plane, including:

the coordination control module is used for expanding the cell aiming at the inside or between the servers;

the protocol processing module is used for receiving and/or forwarding the standard interface message and coding and/or decoding the standard interface message;

the algorithm processing module is used for carrying out calculation processing aiming at a protocol algorithm and a base station optimization algorithm;

the process control module is used for controlling a cell process, a paging process, an access process, a context management process and a bottom layer parameter configuration process;

the public support module is used for providing public calling functions, log recording, timer maintenance, message receiving and sending and information inquiry;

and the scene selection module is used for judging whether the current system is constructed into a centralized scene or a separated scene and selecting a corresponding scene strategy based on the judged scene.

Preferably, the coordination control module includes:

the SI submodule is used for enhancing the processing capacity of any cell or expanding the capacity of the number of newly added cells aiming at the inside of the server;

and the SO submodule is used for enhancing the processing capacity of any cell or expanding the capacity of the number of newly added cells aiming at the space between the servers.

Preferably, the protocol processing module includes:

the RRC submodule is used for coding and/or decoding an RRC protocol standard interface message;

the F1AP submodule is used for receiving and/or forwarding the F1AP protocol standard interface message, and encoding/decoding the standard interface message;

the NgAP submodule is used for receiving and/or forwarding the standard interface message to the NgAP protocol and coding and/or decoding the standard interface message;

the XnAP submodule is used for receiving and/or forwarding an XnAP protocol standard interface message and coding and/or decoding the standard interface message;

and the X2AP sub-module is used for receiving and/or forwarding the X2AP protocol standard interface message and encoding and/or decoding the standard interface message.

Preferably, the algorithm processing module includes:

the CA submodule is used for carrying out calculation processing aiming at a carrier aggregation algorithm;

the DC submodule is used for carrying out calculation processing aiming at a double-connection algorithm;

the MM submodule is used for carrying out calculation processing aiming at a measurement management algorithm;

the LB submodule is used for calculating and processing a load balancing algorithm;

the HO submodule is used for carrying out calculation processing aiming at a switching algorithm;

the AC submodule is used for carrying out calculation processing aiming at an admission control algorithm;

and the RA submodule is used for performing calculation processing aiming at the resource allocation algorithm.

Preferably, the process control module comprises:

the CELL submodule is used for controlling the processes of CELL configuration management, CELL parameter management and CELL system information management;

PAGING submodule for controlling CU side core network level PAGING, access network level PAGING and other processes, and DU side PAGING time and configuration process;

an ACCESS submodule for controlling the initial ACCESS, re-establishment or Resume, switching, CA or DC multi-connection process of the CU side;

the CONTEXT submodule is used for controlling a CONTEXT management process between the CU side and the DU side;

and the CONFIGURATION submodule is used for controlling the CONFIGURATION process of the bottom layer parameters at the DU side.

Preferably, the common support module includes:

the LOG module is used for recording base station LOGs;

the RECV/SENG module is used for receiving/sending the base station message;

the TIMER submodule is used for starting and managing a TIMER;

and the SEARCH submodule is used for inquiring cell and user information.

Preferably, the scene selection module includes:

the CENTRAL submodule is used for flow control under a self-adaptive centralized scene;

and the SEPARATE sub-module is used for flow control under the adaptive distributed scene.

The embodiment of the invention has the following advantages:

the embodiment of the invention provides a new system architecture, which comprises a coordination control module, a capacity expansion module and a capacity expansion module, wherein the coordination control module is used for expanding the capacity of a cell in a server or among servers; the protocol processing module is used for receiving and/or forwarding the standard interface message and coding and/or decoding the standard interface message; the algorithm processing module is used for carrying out calculation processing aiming at a protocol algorithm and a base station optimization algorithm; the process control module is used for controlling a cell process, a paging process, an access process, a context management process and a bottom layer parameter configuration process; the public support module is used for providing public calling functions, log recording, timer maintenance, message receiving and sending and information inquiry; and the scene selection module is used for judging whether the current system is constructed into a centralized scene or a separated scene and selecting a corresponding scene strategy based on the judged scene. Thus, the new system architecture is generally used for the use of two network elements, namely, the CU and the DU, and the specific functions of the functional modules are different from each other.

Firstly, the requirements on the functions and the performances of CU and DU network elements are fully met through clear functional division; secondly, designing a unique CCU module to control and manage the product performance expansion, distinguishing and processing the requirements of cell expansion and cell expansion quantity in a server and between servers, and smoothly supporting the dynamic expansion of the gNB in a cloud platform scene; thirdly, designing a unique SSU module to carry out unified differentiation processing on the multi-scene condition of the product, ensuring the function detachability and high efficiency, and being capable of carrying out adaptive matching processing to meet the function and performance requirements of CU-DU integrated and separated scenes; and fourthly, a process centralized control mode is adopted, so that the problems of abnormity and repeated complexity improvement caused by mutual control among multiple modules processed in the base station are solved.

Drawings

Fig. 1 is a diagram of a prior art base station implementing a control plane architecture;

fig. 2 is a schematic diagram of a system architecture based on a centralized base station control plane according to the present invention;

FIG. 3 is a schematic of the architecture of the CCU module of the present invention;

FIG. 4A is a schematic diagram of the architecture of the PHU module on the CU side of the present invention;

FIG. 4B is a diagram of the architecture of the PHU module of the present invention on the DU side;

FIG. 5A is a schematic diagram of the architecture of the AHU module of the present invention on the CU side;

FIG. 5B is a diagram of the architecture of the AHU module of the present invention on the DU side;

fig. 6A is a schematic diagram of the structure of the PCU module of the present invention on the CU side;

fig. 6B is a schematic diagram of the architecture of the PCU module of the present invention on the DU side;

FIG. 7 is a block diagram of the CS module of the present invention;

FIG. 8 is a schematic of the architecture of the SSU module of the present invention;

FIG. 9 is a schematic diagram illustrating a current cell capacity expansion interaction process between CU side servers according to the present invention;

FIG. 10 is a schematic diagram illustrating the processing interaction process of the SSU in the CU-DU centralization scenario according to the present invention;

FIG. 11 is a schematic diagram of the SSU processing interaction process in the CU-DU separation scenario of the present invention.

Detailed Description

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

Referring to fig. 2, a system architecture based on a centralized base station control plane according to the present invention is shown, which specifically includes the following modules:

a Coordination Control Unit (CCU) module, configured to perform capacity expansion on a cell in a server or between servers;

the server may be a core network server, and the core network includes a plurality of servers, and is used for processing signaling, data, charging policy, and the like. In the embodiment of the present invention, which type of server is specifically expanded may be adjusted according to actual needs, which is not limited in this embodiment of the present invention.

Referring to fig. 3, in a preferred embodiment of the present invention, the coordination control module includes:

an SI (Service Inner) submodule, which is used for enhancing the processing capacity of any cell or expanding the capacity of the number of newly added cells aiming at the inside of the server;

and the SO (Service Outer) submodule is used for enhancing the processing capacity of any cell or expanding the capacity of the number of newly added cells aiming at the space between the servers.

Specifically, the SI sub-module may include an Inter Cell unit and an Intra Cell unit, where the Inter Cell unit is configured to perform capacity expansion processing for the Inter Cell, and the Intra Cell unit is configured to perform capacity expansion processing for the Intra Cell; the SO submodule also can comprise an Inter Cell unit and an Intra Cell unit, wherein the Inter Cell unit is used for carrying out capacity expansion processing aiming at the cells, and the Intra Cell unit is used for carrying out capacity expansion processing aiming at the cells; the capacity expansion process may be a capacity expansion process for enhancing the processing capability of any cell or increasing the number of newly added cells.

It should be noted that the difference between the SI submodule and the SO submodule is that the SI submodule performs capacity expansion processing on each cell (including inter-cell and intra-cell) in the same server, and the SO submodule performs capacity expansion processing on each cell (including inter-cell and intra-cell) between different servers. The expanding the cell includes expanding the number of cells and the number of users in the cell, and enhancing the performance of the cell processing capacity, including the performance of hardware and/or software.

Since the function of the CCU module is almost the same whether it is on the CU (Centralized Unit) side or the DU (Distributed Unit) side, the above description of the CCU module can be applied to the CU side or the DU side.

A Protocol Handling Unit (PHU) module for receiving and/or forwarding the standard interface message, and encoding and/or decoding the standard interface message;

in a preferred embodiment of the present invention, the protocol processing module includes:

a Radio Resource Control (RRC) submodule for encoding and/or decoding an RRC protocol standard interface message;

an F1AP (F1 application protocol ) submodule, configured to receive and/or forward an F1AP protocol standard interface message, and encode and/or decode the standard interface message;

an NgAP (Ng application Protocol) sub-module, configured to receive and/or forward a standard interface message according to the NgAP Protocol, and encode and/or decode the standard interface message;

an XnAP (XnAP application protocol) submodule, configured to receive and/or forward an XnAP protocol standard interface message, and encode and/or decode the standard interface message;

an X2AP (X2 application protocol ) sub-module, configured to receive and/or forward an X2AP protocol standard interface message, and encode and/or decode the standard interface message.

Specifically, the RRC submodule includes an encoding (Encode) unit/decoding (Decode) unit for encoding or decoding an RRC protocol standard interface message.

The F1AP sub-module includes, in addition to an encoding (Encode) unit/decoding (Decode) unit, a separate forwarding (Interface) unit for forwarding F1AP protocol standard Interface messages.

The NgAP submodule, the XnAP submodule, and the X2AP submodule respectively include an encoding (Encode) unit/decoding (Decode) unit for encoding and/or decoding the standard interface message, and also share a forwarding unit for receiving and/or forwarding the standard interface message according to the corresponding protocol.

It should be noted that the independent forwarding unit is adopted in the F1AP sub-module because the F1AP sub-module forwards a large amount of messages, and the common forwarding unit is adopted in the NgAP sub-module, the XnAP sub-module, and the X2AP sub-module because the NgAP sub-module, the XnAP sub-module, and the X2AP sub-module forwards a small amount of messages.

Further, since the functional coverage of the CU side and the DU side are different, the sub-modules of the PHU module on the CU side and the DU side are different, as shown in fig. 4A, the PHU module includes an RRC sub-module, an F1AP sub-module, an NgAP sub-module, an XnAP sub-module, and an X2AP sub-module on the CU side; as shown in fig. 4B, the PHU module includes an RRC sub-module and an F1AP sub-module on the DU side; the RRC sub-module and the F1AP sub-module in the DU side are the same as the RRC sub-module and the F1AP sub-module in the CU side, and therefore, the description thereof is omitted here.

An Algorithm processing (AHU) module, which is used for calculating and processing a protocol Algorithm and a base station optimization Algorithm;

the protocol algorithm comprises algorithms such as carrier aggregation, measurement management, switching and double connection, and the base station optimization algorithm comprises algorithms such as load balancing, admission control, resource and index allocation.

In a preferred embodiment of the present invention, the algorithm processing module includes:

a Carrier Aggregation (CA) submodule configured to perform calculation processing for a Carrier Aggregation algorithm;

a DC (Dual Connectivity) sub-module for performing calculation processing for a Dual Connectivity algorithm;

an MM (Measurement Management) submodule for performing calculation processing for a Measurement Management algorithm;

an LB (Load Balance) submodule for performing calculation processing aiming at a Load Balance algorithm;

HO (Handover) submodule for performing calculation processing aiming at a Handover algorithm;

an Access Control (AC) sub-module for performing calculation processing for an admission Control algorithm;

and an RA (Resource allocation) sub-module for performing calculation processing for a Resource allocation algorithm.

Since the functional coverage of the CU side and the DU side are different, the sub-modules of the AHU module on the CU side and the DU side are also different, as shown in fig. 5A, the AHU module includes a CA sub-module, a DC sub-module, an MM sub-module, an LB sub-module, an HO sub-module, an AC sub-module, and an RA sub-module on the CU side, as shown in fig. 5B, the AHU module includes the LB sub-module, the AC sub-module, and the RA sub-module on the DU side, which are the same as the LB sub-module, the AC sub-module, and the RA sub-module on the CU side, and therefore, the description thereof is omitted.

In particular, for the LB function DU, it may be mainly responsible for collecting and reporting the load data, and the CU is mainly responsible for processing the load data and triggering the judgment and execution of the operation. For the RA function, the scenario is divided according to the existing CU-DU, the DU is mainly responsible for the allocation of the resources of the RLC, MAC and PHY layers and the related user indexes of the DU, and the CU is mainly responsible for the allocation of the resources of the PDCP layer and the related user indexes of the CU.

A Process Control Unit (PCU) module for controlling a cell process, a paging process, an access process, a context management process, and a bottom layer parameter configuration process;

in a preferred embodiment of the present invention, the process control module comprises:

Specifically, the PCU module is mainly used for flow control, and includes three major parts, namely, a CELL process (CELL), a PAGING Process (PAGING), and an ACCESS process (ACCESS), on a CU side, the CELL process may be further divided into CM (Configuration Management), PM (Parameters Management), SIM (System Information Management), and System Information Management, the PAGING process may be further divided into AMF (Authentication Management Field) (core Network level), RAN (radio ACCESS Network) (ACCESS Network level), and the ACCESS process may be further divided into multiple connections, such as Initial ACCESS, Recovery (re-establishment or Recovery), Handover, and multiconnection (CA/DC), as shown in fig. 6A. For the DU side, the CELL process (CELL), the CONTEXT management process (CONTEXT), the CONFIGURATION of the underlying parameters (CONFIGURATION), and the PAGING Process (PAGING) are divided, as shown in fig. 6B, wherein sub-modules of the CELL process are consistent with those of the CU side. Specifically, for the function of the SIM in the cell process, the CU side may store and forward system information, and the DU side may construct and encode the system information. For the PAGING function, the main role of the CU side is PAGING reception and range control of the AMF and RAN, and the main role of the DU side is calculation, configuration and coding of specific PAGING occasions.

A Common Support (CS) module for providing Common call functions, logging, timer maintenance, messaging, and information query;

as shown in fig. 7, in a preferred embodiment of the present invention, the common support module includes:

the LOG module is used for recording base station LOGs;

the RECV/SENG module is used for receiving/sending the base station message;

the TIMER submodule is used for starting and managing a TIMER;

and the SEARCH submodule is used for inquiring cell and user information.

Specifically, the CS module is mainly used to provide common call functions, including Log logging (Log), Timer maintenance (Timer), messaging (Recv/Send), information query (Search), and the like, where the processing of this part may be different in application scenarios on the CU side or the DU side, but the implementation mechanisms are substantially the same.

And the Scene Selection (SSU) module is used for judging whether the current system framework is a centralized Scene or a separated Scene and selecting a corresponding Scene strategy based on the judged Scene.

As shown in fig. 8, in a preferred embodiment of the present invention, the scene selection module includes:

Specifically, the SSU module is mainly used for implementing flexible networking scenarios, and typically includes two functions, namely a centralized (Central) function and a separated (Separate) function, similar to a middleware, and by adjusting a control switch of the SSU, different processing strategies can be flexibly adopted, so that convenience is provided for the separated mode, processing steps are simplified for the centralized mode, and multi-version costs are provided for different architectures.

The interaction process between the various modules is detailed below by means of three interaction examples.

Referring to FIG. 9, interaction example one-Capacity expansion of Current cell between CU side servers

Step 1, manually or automatically triggering the capacity of a current cell according to the configuration of set parameters, wherein the current simulation scene is the expansion between servers in the cell;

step 2, acquiring the information of the current cell and starting a cell expansion process;

step 3, acquiring user resources shared to another server;

step 4, triggering temporary admission control;

step 5, returning the information of the current cell and the information of the shared user resource;

step 6, returning the prepared resource and cell information to OM for creating new service;

step 7, establishing a basic environment for a new server and carrying information and resources of the established cell;

step 8, triggering the resource allocation process of the extended cell;

step 9, informing the resource allocation module of using the resources;

step 10, returning an initialization success result;

step 11, the return process is successful;

step 12, returning to complete the configuration process;

step 13, indicating that the cell is expanded;

step 14, indicating the completion of the expansion;

step 15, indicating to remove the admission control and starting user shunting;

and step 16, indicating that the resources are used.

It should be noted that, two servers in fig. 9 are called services, and are only to represent interaction between two services isolated from each other, and may be two threads, two processes, or even two servers, which may be specifically adjusted according to actual needs.

Interaction example 2-processing of SSU in CU-DU centralization scenario with reference to FIG. 10

Step 1, receiving msg3 messages of a bottom layer;

step 2, forwarding the msg3 message to the SSU module;

step 3, the SSU module directly interacts with the SSU module of the CU when finding that the current scene is the centralized network deployment scene;

step 4, the SSU module transmits the message to the PCU-CU of the CU;

step 5, calling a decoding function of the RRC;

step 6, returning a decoding result;

step 7, after the processing of admission, resource allocation and the like, sending msg4 to the SSU;

step 8, the SSU judges that the current scene is a centralized scene;

step 9, the SSU transmits the msg4 to the PCU-DU;

step 10, configuring parameters;

and step 11, transmitting a msg4 message.

Interaction example 3-processing of SSU in CU-DU separation scenario with reference to FIG. 11

Step 1, receiving msg3 messages of a bottom layer;

step 2, forwarding the msg3 message to the ssu module;

step 3, the SSU finds that the message is forwarded to the F1AP for encoding for the separated scene;

step 4, the DU-F1AP is sent to the CU-F1Apinterface through the interface;

step 5, F1AP is decoded and then sent to the PCU-CU;

step 6, RRC decoding is carried out;

step 7, returning a decoding result;

step 8, after the processing of admission, resource allocation and the like, transmitting msg4 to the SSU;

step 9, the SSU judges that the separation scene transmits the message to F1AP for coding;

step 10, the CU-F1AP sends the interface to the DU-F1Apinterface through the interface;

step 11, sending the decoding result to the PCU-DU;

step 12, configuring parameters;

and step 13, transmitting a msg4 message.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.

The above detailed description is made on a system architecture based on a centralized base station control plane provided by the present invention, and a specific example is applied in the present document to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A system architecture based on a centralized base station control plane, comprising:

the coordination control module is used for expanding the cell aiming at the inside or between the servers; the expanding the capacity of the cell comprises: the number of cells and the number of users of the cells are expanded, and the cell processing capacity is enhanced;

2. The system architecture according to claim 1, characterized in that said coordination control module comprises:

3. The system architecture according to claim 1, wherein said protocol processing module comprises:

4. The system architecture according to claim 1, characterized in that said algorithmic processing module comprises:

5. The system architecture of claim 1, wherein the process control module includes:

6. The system architecture according to claim 1, characterized in that said common support module comprises:

the LOG module is used for recording base station LOGs;

the RECV/SENG module is used for receiving/sending the base station message;

the TIMER submodule is used for starting and managing a TIMER;

and the SEARCH submodule is used for inquiring cell and user information.

7. The system architecture according to claim 1, characterized in that said scene selection module comprises: