WO2014146502A1

WO2014146502A1 - Radio access network congestion management method and apparatus, and congestion strategy management method and system

Info

Publication number: WO2014146502A1
Application number: PCT/CN2014/070186
Authority: WO
Inventors: 毛玉欣; 吴锦花; 周晓云
Original assignee: 中兴通讯股份有限公司
Priority date: 2013-03-20
Filing date: 2014-01-06
Publication date: 2014-09-25
Also published as: CN104066115A

Abstract

Disclosed are a radio access network congestion management method and apparatus, applied in a Policy and Charging Control (PCC) architecture, a load sensing function being provided in the PCC architecture. The method comprises: the load sensing function acquiring traffic information of each user equipment (UE) and information about a cell which the UE accesses, collecting statistics on the load of each cell, and determining a congested state of each cell according to the load of each cell. Also disclosed are a radio access network congestion strategy management method and system. The present invention enhances the load control capability of the PCC architecture, avoids cell call drop, unsmooth access, and other situations of reduced service quality from occurring in some cells of the network due to load congestion, and provides better service quality for the user.

Description

Wireless access network congestion management method and device, congestion strategy management method and system

The present invention relates to a load processing technology in a Policy and Charging Control (PCC) architecture, and in particular, to a wireless access network congestion management method and apparatus, and a wireless access network congestion policy management method and system. Background technique

The 3rd Generation Partnership Project (3GPP) defines the Policy and Charging Control (PCC) architecture for mobile networks. As shown in Figure 1, the following briefly describes the connections between entities and Its function.

The Policy and Charging Rules Function (PCRF) is configured to formulate a resource control policy for the service data flow using the network resource in the transmission process; the resource control policy includes a QoS (Quality of Service) control policy and Billing control strategy, etc.

The PCEF (Policy and Charging Enforcement Function) is configured to perform the PCC rule delivered by the PCRF or preconfigured on the PCEF to detect the IP packet transmitted on the network and identify the IP packet. The traffic of the service, and provides QoS and charging control for the traffic.

The Bearer Binding and Event Report Function (BBERF) is configured to detect IP packets and map IP packets to corresponding bearer channels according to rules. The BBERF also performs the reporting of the bearer-related event. For example, when the bearer is lost or the access network is switched, the corresponding event needs to be reported to the PCRF to request the PCRF to make a corresponding decision.

User subscription database (SPR, Subscription Profile Repository), configured to save User-signed business information, formulate PCC rules for the PCRF and provide necessary user subscription information. The Online Charging System (OCS) and the Offline Charging System (OFCS) are used for offline and online charging, respectively.

The principle of the PCC architecture implementing policy control on the services carried on the bearer network is as follows: When the user equipment is attached to the network, the corresponding BBERF, PCEF and PCRF are selected. A gateway control session is established between the PCRF and the BBERF, an IP-CAN session is established with the PCEF, and a gateway control session and an IP-CAN session association are established according to information such as the user identification.

When the user conducts the service, the PCRF formulates a corresponding QoS and charging control policy for the service data flow corresponding to the service, including the service information negotiated by the application layer, the user subscription information, and the operator policy, including the five-way of the service data flow. Group, authorized bandwidth and other information. The PCRF delivers the QoS control policy to the BBERF by using the QoS rule, and delivers the QoS and charging control policy to the PCEF in PCC rules. BBERF establishes bindings between QoS rules and bearers. When an IP packet arrives at the PCEF or the BBERF, the IP packet is matched according to the quintuple in the rule, and the matched IP packet is transmitted using the corresponding bearer, and the corresponding charging is performed to implement the service. control. When the service is changed, the service information changes, for example, the service data flow is terminated. The network resources occupied by the service data flow can be released in real time through PCC control, and the dynamic QoS control of the service is achieved.

With the rapid development of the network, rich services, and the emergence of intelligent terminals, a large number of users began to access various data services through smart terminal access networks, such as web browsing, online games, online shopping, watching videos, and the like. This has led to a sharp increase in network data traffic, which will not only greatly increase the network load, but even cause network congestion, which will inevitably lead to a decline in user experience. Therefore, this brings shocks and challenges to network operations. How to solve network congestion and reduce network load is getting more and more attention and attention from operators. Reducing network congestion can be achieved by increasing investment and expanding the network, but this will increase costs. On the other hand, it can introduce congestion management mechanism to existing networks, and prevent network congestion and reduce congestion by properly managing network data. But due to wireless The resources of the network are limited, so the probability of congestion is still greater than that of the core network. Summary of the invention

In view of this, the main object of the present invention is to provide a wireless access network congestion management method and apparatus, and a wireless access network congestion policy management method and system, which can provide better load control for the PCC architecture.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A wireless access network congestion management method includes:

The load sensing function acquires the traffic information of each UE and the cell information accessed by the UE, and counts the load of each cell, and determines the congestion state of each cell according to the load of each cell.

Preferably, the load sensing function acquires identification information of each UE reported by the gateway GPRS support node GGSN or the packet data network gateway P-GW or the serving gateway S-GW, and cell information accessed by the UE, and traffic of each UE. Information

Or the load sensing function acquires the identification information and the traffic information of each UE reported by the GGSN or the P-GW or the S-GW, and the identifier information of each UE reported by the radio access network RAN and the cell accessed by each UE. Information

The load sensing function calculates load information of the cell according to traffic information of a UE accessing the same cell.

Preferably, the determining, according to the load of each cell, the congestion status of each cell, includes: determining that the cell is in a congested state when the load of the cell is greater than or equal to a set load threshold of the cell;

When it is determined that the load of the cell is less than the set load threshold of the cell, the cell is in a non-congested state.

A method for managing congestion policy of a wireless access network, comprising:

The load sensing function acquires the traffic information of each user equipment UE and the information of the cell to which it accesses, and determines the load of each cell, and determines the congestion state of each cell according to the load of each cell; The load sensing function sends a congestion status of each cell to the policy and charging rule function PCRF, so that the PCRF determines a congestion management policy of the cell according to a congestion state of the cell.

Preferably, the PCRF determines a congestion management policy of the cell according to a congestion state of the cell, including:

When the PCRF receives the PCC request of the service, and determines that the cell used by the service is currently in a congested state,

The QoS resource is denied to be authorized for the service; or, according to the user level and service priority information of the service request, the QoS resource is authorized for the service, and the QoS resource occupied by the service with lower service priority is reduced.

Preferably, the load sensing function acquires the traffic information of each user equipment UE and the information of the accessed cell, including:

The load sensing function acquires the identification information of each UE reported by the gateway GPRS support node GGSN or the packet data network gateway P-GW or the serving gateway S-GW, the information of the accessed cell, and the traffic information of each UE;

Or the load sensing function acquires the identification information and the traffic information of each UE that is reported by the GGSN or the P-GW or the S-GW, and the identifier information of each UE that is reported by the radio access network RAN and the cell to which it accesses information.

A radio access network congestion management apparatus, comprising: an obtaining unit and a determining unit, wherein: an acquiring unit, configured to acquire traffic information of each UE and information of a cell accessed by the UE; and determining, configured to calculate a load of each cell And determine each small according to the load of each cell Congestion status of the area.

Preferably, the acquiring unit is further configured to receive, from the GGSN or the P-GW or the S-GW, the identity information of each UE and the information of the cell that it accesses and the traffic information of each UE;

Or the acquiring unit is further configured to receive the identifier information and the traffic information of each UE from the GGSN or the P-GW or the S-GW, and receive the identifier information of each UE and the accessed cell from the radio access network RAN. Information;

Correspondingly, the determining unit is further configured to calculate load information of the cell according to traffic information of a UE accessing the same cell.

Preferably, the determining unit is further configured to determine that the cell is in a congested state when the load of the cell is greater than or equal to a set load threshold of the cell;

A wireless access network congestion policy management system includes:

The load sensing function is configured to obtain the traffic information of each user equipment UE and the information of the accessed cell, and collect the load of each cell, and determine the congestion state of each cell according to the load of each cell;

The PCRF is configured to acquire a congestion state of each cell from the load sensing function, and determine a congestion management policy of the cell according to a congestion state of the cell.

Preferably, the PCRF is further configured to: when receiving a PCC request for the service, determining that the cell used by the service is currently in a congested state,

Refusing to authorize QoS resources for the service; or, according to the user level and service priority information of the service request, authorize QoS resources for the service, and reduce QoS resources occupied by services with lower priority than the service.

Preferably, the system further includes a GGSN or a P-GW or an S-GW, and a RAN; the GGSN or the P-GW or the S-GW reports the flow of each UE to the load sensing function. Information about the amount of information and the cells it accesses;

Alternatively, the GGSN or the P-GW or the S-GW reports the traffic information of each UE to the load sensing function, and the radio access network RAN reports the information of the cell accessed by each UE to the load sensing function.

In the present invention, a load sensing function is set in the PCC architecture; the load sensing function acquires the traffic information of each user equipment UE and the information of the accessed cell, and determines the load of each cell, and determines each cell according to the load of each cell. Congestion state; the PCRF determines the load policy of the cell according to the congestion state of the cell. By setting a load sensing function in the PCC architecture, the invention can collect the cell load state in the PCC architecture, and then can perform reasonable load control according to the load state of the cell, improve the load control capability of the PCC architecture, and avoid the network. Some of the cells may experience a drop in service quality such as dropped calls and poor access due to load congestion, which provides better service quality for users. DRAWINGS

Figure 1 is a schematic diagram of a PCC architecture;

2 is a flow chart of a wireless access network congestion policy management method according to Embodiment 1 of the present invention;

3 is a flow chart of a wireless access network congestion policy management method according to Embodiment 2 of the present invention;

4 is a flow chart of a wireless access network congestion policy management method according to Embodiment 3 of the present invention;

5 is a flow chart of a wireless access network congestion policy management method according to Embodiment 4 of the present invention;

FIG. 6 is a schematic structural diagram of a structure of a wireless access network congestion management apparatus according to an embodiment of the present invention. detailed description

The present invention will be further described in detail below with reference to the accompanying drawings.

Embodiment 1

In this embodiment, the load sensing function collects traffic information of a service flow carried by each user, and collects load information of each cell according to the statistics, thereby determining a congestion status of the cell. When a new service starts, the PCRF acquires a cell congestion condition from the load sensing function according to the cell information. If it is congested, it rejects new business development to alleviate network congestion. 2 is a flowchart of a wireless access network congestion policy management method according to the first embodiment of the present invention. As shown in FIG. 2, the wireless access network congestion policy management method of this example includes the following steps:

In step 201, the user accesses the network and establishes an IP-CAN session between the GGSN and the PCRF. Step 202: The user conducts a service.

Step 203: The GGSN reports the traffic information of the service flow to the load sensing function, where the report message further includes the cell information used by the user to perform the service, for example, (CGI). The traffic information reporting manner may be reported by the GGSN to the load sensing function, or may be reported by the GGSN by the load sensing function.

Step 204: The load sensing function returns an acknowledgement message to the GGSN.

Step 205: The load sensing function collects traffic information of each cell according to the service traffic information reported by each GGSN and the corresponding CGI. The load sensing function determines the congestion status of each cell. For example, the operator configures the maximum capacity supported by each lower zone on the load awareness function. When the cell traffic counted by the load sensing function reaches or exceeds the corresponding maximum traffic configured by the load sensing function, the load sensing function determines that the cell is in a congested state. Otherwise, the cell is in a normal load state.

Step 206: If a new user (e.g., UE-2) accesses the network, and establishes an IP-CAN session for it between the GGSN and the PCRF. In step 207, UE-2 performs a service, such as a PUSH service.

Step 208: The AF sends the negotiation information of the service to the PCRF, and requests the PCRF to authorize the service by using the network resource.

Step 209: After receiving the service authorization request, the PCRF performs session association, identifies an IP-CAN session used by the user who performs the service, and obtains a CGI used by the user to access the network.

Step 210: The PCRF requests the congestion sensing function to the congestion status information of the cell where the user is located, and sends the CGI of the corresponding cell to the load sensing function in the request information.

Step 211: According to the CGI, the load sensing function returns the congestion information of the corresponding cell.

Step 212: If the information obtained by the PCRF is that the cell is in a congested state, the PCRF determines that the service is a non-real-time service according to the type of the service, and the PCRF decides to reject the service at this time.

Step 213: The PCRF returns an authorization failure notification for the service to the AF, and notifies the current cell that the current state is in a congested state.

Step 214: The UE-2 fails to perform the service PUSH service.

In the above manner, when a new service is started, the PCRF first obtains the congestion status of the cell used by the service. If the cell is in a congested state at this time, the PCRF may temporarily refuse the service to achieve the purpose of reducing the congestion of the cell.

Embodiment 2

In this embodiment, the load sensing function collects the traffic information of the service flow carried by each user, and the RAN reports the identification information of the user and the latest cell information used by the load sensing function, and the load sensing function counts each cell according to the load sensing function. The load information, in turn, determines the congestion status of the cell. When a new service starts, the PCRF acquires a cell congestion condition from the load sensing function according to the cell information. If it is congested, it rejects new business development to alleviate network congestion. 3 is a flowchart of a wireless access network congestion policy management method according to Embodiment 2 of the present invention, as shown in FIG. 3, The wireless access network congestion policy management method of this example includes the following steps:

In step 301, the user accesses the network and establishes an IP-CAN session between the GGSN and the PCRF. Step 302: The user conducts a service.

Step 303: The GGSN reports the traffic information of the service flow to the load sensing function, and the report message further includes the identifier information (for example, the user identifier) of the user. The traffic information reporting manner may be reported by the GGSN to the load sensing function, or may be reported by the GGSN by the load sensing function.

Step 304, the load sensing function returns an acknowledgement message to the GGSN.

Step 305: If the GGSN cannot obtain the latest cell information used by the user to access the network, for example, after the user accesses the network, the GGSN does not obtain the latest cell information in time, and the RAN may The access information of the user is obtained, for example, by means of signaling tracking, and the user access information includes the user identifier and the latest cell information cell id, and is reported to the load sensing function.

Step 306, the load sensing function returns an acknowledgement message.

Step 307: The load sensing function acquires the traffic information reported by the GGSN and the cell information used by the RAN to report the traffic. The load sensing function can associate the cells used by each service according to the user identifier, and can collect the traffic information of each cell. The load sensing function determines the congestion status of each cell. For example, the operator has the maximum capacity supported by each lower zone on the load awareness function. When the cell traffic counted by the load sensing function reaches or exceeds the corresponding maximum traffic configured by the load sensing function, the load sensing function determines that the cell is in a congested state. Otherwise the cell is in a normal load state.

Step 308, if a new user (e.g., UE-2) accesses the network, and establishes an IP-CAN session for it between the GGSN and the PCRF.

In step 309, the UE-2 performs a service, such as a PUSH service.

Step 310: The AF sends the negotiation information of the service to the PCRF, and requests the PCRF to be the industry. Use network resources for authorization.

Step 311: After receiving the service authorization request, the PCRF performs session association to identify an IP-CAN session used by the user who performs the service.

Step 312: The PCRF requests, from the load sensing function, congestion status information of the cell where the user is located, where the request information includes user identification information.

Step 313: The load sensing function identifies the cell used by the user according to the user identification information, and the load sensing function returns the congestion information of the corresponding cell to the PCRF.

Step 314: If the information obtained by the PCRF is that the cell is in a congested state, the PCRF determines that the service is a non-real-time service according to the type of the service, and the PCRF decides to reject the service at this time.

Step 315: The PCRF returns an authorization failure notification for the service to the AF, and notifies the current cell that it is in a congested state.

Step 316: The UE-2 fails to perform the service PUSH service.

Embodiment 3

In this embodiment, the P-GW reports the traffic information of each user's service flow to the load sensing function, and the load sensing function collects the congestion status of each cell. If the cell is congested, the load sensing function actively informs the PCRF to start the congestion policy to reduce congestion. FIG. 4 is a flowchart of a method for managing a congestion policy of a radio access network according to Embodiment 3 of the present invention. As shown in FIG. 4, the method for managing a congestion policy of a radio access network in this example includes the following steps:

In step 401, the user accesses the network, and establishes an IP-CAN session between the P-GW and the PCRF. It is possible for different users to access the network to select different P-GWs, as well as PCRFs. This example is selected by the user. The P-GW-1 or P-GW-2 is taken as an example to illustrate the implementation of congestion management.

Step 402: The user accessing the network conducts a service.

Step 403: When the P-GW-1 detects the service flow, the usage information of the service flow is reported to the load sensing function, where the report information further includes the CGI used by the service.

Step 404, the load sensing function returns an acknowledgement message to the P-GW-1.

Step 405: The process of reporting the traffic information by the P-GW-2 refers to the P-GW-1.

Step 406: The load sensing function collects traffic information of each cell according to the service traffic information reported by each P-GW and the corresponding CGI. And determine the congestion status of each cell. For example, the operator has the maximum capacity supported by each lower zone on the load awareness function. When the traffic of the traffic-aware function is up to or exceeds the configured maximum traffic, the load-aware function determines that the cell is in a congested state. Otherwise, the cell is in a normal load state.

Step 407: After the load sensing function determines that the cell is in a congested state, the load sensing function sends the cell congestion message to all PCRFs in the domain, where the message includes the CGI of the cell in which congestion occurs.

Step 408: After receiving the cell congestion notification message of the load sensing function, the PCRF determines to use the CGI related user information, and determines a congestion policy according to the user level, the service priority, and the like, for example, the service used by the low-level user. The network resources are degraded and so on.

Step 409: The PCRF sends the congestion policy to the P-GW.

Step 410: The P-GW updates the authorized QoS and bandwidth according to the congestion policy, and degrades the authorized QoS and bandwidth of the low priority service data flow to reduce the cell load and eliminate congestion.

Once the load sensing function determines the cell congestion cancellation according to the reported traffic information, the PCRF can be notified to cancel the congestion policy and restore the authorized QoS and bandwidth of the quality service data flow.

Embodiment 4

In this embodiment, when each user accessing the network conducts a service, the P-GW reports the traffic information of each user's service flow to the load sensing function, and the RAN reports the user to the load sensing function. The identification information and the cell information used by the user are used by the load sensing function to count the congestion status of each cell. If the cell is congested, the load sensing function actively informs the PCRF to start the congestion policy to reduce the congestion. FIG. 5 is a flowchart of the method for managing the congestion policy of the radio access network according to the fourth embodiment of the present invention. As shown in FIG. 5, the example is shown in FIG. The wireless access network congestion policy management method includes the following steps:

Step 501: The user accesses the network, and establishes an IP-CAN session between the P-GW and the PCRF. It is possible for different users to access the network to select different P-GWs, as well as PCRFs. In this example, the user chooses P-GW-1 or P-GW-2 as an example to illustrate the implementation of congestion management.

Step 502: A user accessing the network conducts a service.

Step 503: When the P-GW-1 detects the service flow, the usage information of the service flow is reported to the load sensing function, and the report information further includes the user identifier.

Step 504, the load sensing function returns an acknowledgement message to the P-GW-1.

The process of reporting traffic information by P-GW-2 refers to P-GW-1.

Step 505: The RAN reports the user information and the CGI of the cell information used by the user to the load sensing function.

Step 506, the load sensing function returns an acknowledgement message.

Step 507: The load sensing function collects traffic information of each cell according to the service traffic information reported by each P-GW and the user access information reported by the RAN. And determine the congestion status of each cell. For example, the operator configures the maximum capacity supported by each lower zone on the load awareness function. When the cell traffic counted by the load sensing function reaches or exceeds the corresponding maximum traffic configured by the load sensing function, the load sensing function determines that the cell is in a congested state. Otherwise, the cell is in a normal load state.

Step 508: After the load sensing function determines that the cell is in a congested state, the load sensing function notifies the PCRF that the cell is in a congested state. The load sensing function senses the user who uses the cell, and discovers, according to the user identifier, the PCRF selected by the user to access the network, and sends the PCRF to the PCRF. Sending the cell congestion status information, and including user identification information.

Step 509: After receiving the cell congestion notification message of the load sensing function, the PCRF determines a congestion policy according to the user level, the service priority, and the like, for example, degrading the network resource used by the service performed by the low-level user.

Step 510: The PCRF sends the congestion policy to the P-GW.

Step 511: The P-GW updates the authorized QoS and bandwidth according to the congestion policy, and degrades the authorized QoS and bandwidth of the low priority service data flow to reduce the cell load and eliminate congestion.

In summary, according to the above embodiment, the present invention collects traffic information of each service data flow through the load sensing function, and then calculates load information of each cell to determine the congestion status of the cell. Once the cell is congested, the network congestion is eliminated by rejecting the development of new services or by degrading the authorized QoS and bandwidth of the services already in operation. It solves the problem of network congestion caused by network load overload.

FIG. 6 is a schematic structural diagram of a radio access network congestion management apparatus according to an embodiment of the present invention. As shown in FIG. 6, the apparatus is configured in a policy and charging control PCC architecture. The radio access network congestion management apparatus of the present invention includes an obtaining unit. 60 and determining unit 61, wherein:

The obtaining unit 60 is configured to obtain the traffic information of each user equipment UE and the information of the accessed area;

The determining unit 61 is configured to count the load of each cell, and determine the congestion status of each cell according to the load of each cell.

The obtaining unit 60 is further configured to receive, from the gateway GPRS support node GGSN or the packet data network gateway P-GW or the serving gateway S-GW, the identifier information of each UE and the information of the accessed cell and the traffic information of each UE. ;

Alternatively, the obtaining unit 60 is further configured to receive each from the GGSN or the P-GW or the S-GW. Identification information and traffic information of the UE, receiving, from the radio access network RAN, identification information of each UE and information of the cell to which it accesses;

Correspondingly, the determining unit 61 is further configured to collect load information of the cell according to traffic information of a UE accessing the same cell.

The determining unit 61 is further configured to determine that the cell is in a congested state when the load of the cell is greater than or equal to a set load threshold of the cell;

It should be understood by those skilled in the art that the implementation functions of the processing units in the radio access network congestion management apparatus shown in FIG. 6 can be understood by referring to the related description of the foregoing radio access network congestion management method. It should be understood by those skilled in the art that the functions of the processing units in the wireless access network congestion management apparatus shown in FIG. 6 can be implemented by a program running on the processor, or can be implemented by a specific logic circuit.

The invention also describes a wireless access network congestion policy management system, which is applied to a PCC architecture, wherein the PCC architecture includes a policy and charging rule function PCRF, and is provided with a load sensing function;

The policy and charging rule function is configured to obtain a congestion state of each cell from the load sensing function, and determine a congestion management policy of the cell according to a congestion state of the cell.

The PCRF is further configured to receive a PCC request for the service, and determine that the cell used by the service is currently in a congested state.

Refusing to authorize QoS resources for the service; or, according to the user level and service priority information of the service request, authorizing QoS resources for the service, and reducing the priority lower than the service The QoS resources occupied by the service.

The system further includes a gateway GPRS support node GGSN or a packet data network gateway P-GW or a serving gateway S-GW or RAN;

The GGSN or the P-GW or the S-GW reports the traffic information of each UE and the information of the accessed cell to the load sensing function;

Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Industrial applicability

The embodiment of the present invention can collect the load state of the cell in the PCC architecture by setting the load sensing function in the PCC architecture, thereby performing reasonable load control according to the load state of the cell, improving the load control capability of the PCC architecture, and avoiding the network. Some of the cells may experience a drop in service quality such as dropped calls and poor access due to load congestion, which provides better service quality for users.

Claims

claims

1. A wireless access network congestion management method, including:

The load sensing function obtains the traffic information of each user equipment UE and the cell information it accesses, counts the load of each cell, and determines the congestion status of each cell based on the load of each cell.

2. The method according to claim 1, wherein the load sensing function obtains the traffic information of each user equipment UE and the information of the cells it accesses, and counts the load of each cell, including: the load sensing function Obtain the identification information of each UE and its accessed cell information reported by the gateway GPRS support node GGSN or the packet data network gateway P-GW or the serving gateway S-GW, as well as the traffic information of each UE;

Alternatively, the load sensing function obtains the identification information and traffic information of each UE reported by the GGSN or P-GW or S-GW, and the identification information of each UE and the cell accessed by each UE reported by the radio access network RAN. information;

The load sensing function collects statistics on the load information of the cell based on the traffic information of UEs accessing the same cell.

3. The method according to claim 1, wherein the determining the congestion status of each cell according to the load of each cell includes:

When it is determined that the load of a cell is greater than or equal to the set load threshold of the cell, the cell is in a congestion state;

When it is determined that the load of a cell is less than the set load threshold of the cell, the cell is in a non-congested state.

4. A method for wireless access network congestion policy management, including:

The load sensing function obtains the traffic information of each user equipment UE and the information of the cells it accesses, and determines the load of each cell, and determines the congestion status of each cell according to the load of each cell; the load sensing function provides policy and charging The rule function PCRF sends the congestion status of each cell, so that the PCRF determines the congestion management policy of the cell according to the congestion status of the cell.

5. The method according to claim 4, wherein the PCRF determines the congestion management policy of the cell according to the congestion status of the cell, including:

When the PCRF receives the PCC request of the service and determines that the cell used by the service is currently in a congestion state,

Refuse to authorize QoS resources for the service; or authorize QoS resources for the service according to the user level and service priority information requested by the service, and reduce the QoS resources occupied by services with a lower priority than the service.

6. The method according to claim 4, wherein the load sensing function obtains the traffic information of each user equipment UE and the information of the cells it accesses, including:

The load sensing function obtains the identification information of each UE and the information of the cells it accesses and the traffic information of each UE reported by the gateway GPRS support node GGSN or the packet data network gateway P-GW or the serving gateway S-GW;

Alternatively, the load sensing function obtains the identification information and traffic information of each UE reported by the GGSN or P-GW or S-GW, and the radio access network RAN reports the identification information of each UE and the information of the cell it accesses. information.

7. The method according to claim 4, wherein the determining the congestion status of each cell according to the load of each cell includes:

8. A wireless access network congestion management device, including an acquisition unit and a determination unit, wherein: the acquisition unit is configured to acquire the traffic information of each user equipment UE and the information of the cells it accesses;

The determination unit is configured to count the load of each cell and determine the load of each cell based on the load of each cell. The congestion status of the area.

9. The apparatus according to claim 8, wherein the obtaining unit is further configured to receive the identification information of each UE and its identification information from the gateway GPRS support node GGSN or the packet data network gateway P-GW or the serving gateway S-GW. The information of the accessed cell and the traffic information of each UE; or, the acquisition unit is also configured to receive the identification information and traffic information of each UE from the GGSN or P-GW or S-GW, and from the wireless access network The RAN receives the identification information of each UE and the information of the cell it accesses;

Correspondingly, the determining unit is further configured to collect statistics on the load information of the cell based on the traffic information of UEs accessing the same cell.

10. The device according to claim 8, wherein the determining unit is further configured to determine that the cell is in a congestion state when it determines that the load of the cell is greater than or equal to the set load threshold of the cell;

11. A wireless access network congestion policy management system, including:

The load sensing function is configured to obtain the traffic information of each user equipment UE and the information of the cells it accesses, and count the load of each cell, and determine the congestion status of each cell based on the load of each cell;

The policy and charging rule function PCRF is configured to obtain the congestion status of each cell from the load sensing function, and determine the congestion management policy of the cell based on the congestion status of the cell.

12. The system according to claim 11, wherein the PCRF is further configured to receive a PCC request of a service, and when it is determined that the cell used by the service is currently in a congestion state, refuse to authorize Quality of Service QoS for the service. resources; or, according to the user level and service priority information of the service request, authorize QoS resources for the service, and reduce the QoS resources occupied by services with a lower priority than the service priority.

13. The system according to claim 11, wherein the system further includes a gateway GPRS support node GGSN or a packet data network gateway P-GW or a serving gateway S-GW, and RAN; the GGSN or P-GW or S -GW reports the traffic information of each UE and the information of the cells it accesses to the load sensing function;

Alternatively, the GGSN or P-GW or S-GW reports the traffic information of each UE to the load sensing function, and the radio access network RAN reports the information of the cell accessed by each UE to the load sensing function.