CN102781067B - A kind of realization method and system of business admission control - Google Patents

Abstract

The invention discloses a kind of realization method and system of business admission control, methods described is applied in broadband policy control function (BPCF), including：Receive the call access control request commenced business for user that "Policy and Charging Rules Function (PCRF) is sent；Call access control is carried out to call access control request according to closed user group (CSG) information of user.Another implementation method, is provided in the "Policy and Charging Rules Function PCRFHNB that policy control is serviced applied to being accessed for Home eNodeB, including：Receive the call access control request commenced business for user that femto gateway is sent；Call access control is carried out to call access control request according to closed user group (CSG) information of user.By the present invention, solve license to the fixed network resource that mobile access uses occur it is nervous in the case of, how to be preferably CSG user commence business offer QoS guarantee the problem of.

Description

Method and system for implementing service admission control

technical field

The present invention relates to the field of wireless communication, in particular to a method and system for realizing service admission control.

Background technique

The Evolved Packet System (EPS for short) developed by the 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP for short) consists of a Mobility Management Entity (MME for short), a Serving Gateway (Serving Gateway for short), S-GW), Packet Data Network Gateway (Packet Data Network Gateway, P-GW for short), Home Subscriber Server (Home Subscriber Server, HSS for short) and other network elements, as shown in FIG. 1 .

MME is responsible for mobility management, non-access stratum signaling processing, and user mobility management context management; S-GW forwards data between user access and P-GW, and is responsible for paging waiting The data is cached; the P-GW is the border gateway between the EPS and the Packet Data Network (PDN) network, and is responsible for accessing the PDN and forwarding data between the EPS and the PDN.

If the EPS system supports Policy and Charging Control (PCC for short), the Policy and Charging Rules Function (Policy and Charging Rules Function, PCRF for short) formulates policies and charging rules, and it uses the interface The Rx is connected to the Application Function (AF) in the operator's network protocol (Internet Protocol, IP) service network to obtain service information, which is used to generate service information of the PCC policy. When the S5 interface between the S-GW and the P-GW adopts the GTP (GPRS Tunneling Protocol, General Packet Radio Service Tunneling Protocol) protocol, the P-GW resides in the Policy and Charging Enforcement Function (Policy and Charging Enforcement Function, referred to as for PCEF). The PCRF and the P-GW exchange information through the Gx interface, and are responsible for initiating bearer establishment, modification and release, ensuring the quality of service (Quality of Service, QoS for short) of business data transmission, and performing charging control. When the S5 interface between the S-GW and the P-GW uses Proxy Mobile IP (PMIP for short), the bearer binding and event report function (Bearer Binding and Event Report Function, BBERF for short) resides in the S-GW ), and exchange information between the S-GW and the PCRF through the Gxc interface, and the BBERF is responsible for initiating bearer establishment, modification, and release to ensure the service quality of business data, and the PCEF performs charging control.

A user can access the EPS network through an Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio Access Network, E-UTRAN for short).

In addition, the user may also access the EPS network through a home base station system (Home NodeB subsystem, referred to as HNB subsystem) or a wireless local area network (Wireless Local Area Network, referred to as WLAN).

FIG. 1 shows a schematic diagram of a user accessing an EPS network through a home base station system, where the home base station system may be a HNB subsystem or an evolved home base station system (Home evolved NodeB subsystem, HeNB subsystem for short). HNB/HeNB is a small, low-power base station, usually deployed in indoor places such as homes and offices. HNB/HeNB usually accesses the EPS network through leased fixed line. In order to ensure access security, a Security Gateway (SeGW) is introduced into the core network for shielding. The data interaction between HNB/HeNB and SeGW will be encapsulated by IPSec, and fixed network devices cannot perceive HNB/HeNB and mobile core Network interaction data. HNB accesses the EPS network through the HNB GW, and deploys the HNB subsystem. The HNB GW is a mandatory network element. In addition, there is an interface between the HNB GW and the Mobile Switching Center (MSC), so that the HNB subsystem supports the circuit switched domain (CircuitSwitched Domain, referred to as CS) service; HeNB can be directly connected to MME, or can be connected to MME through HeNBGW, that is, HeNB GW is an optional network element, and the HeNB subsystem does not support CS service. An HMS/HeMS (HNB/HeNB Management System, HNB/HeNB management system) exists in the HNB/HeNB subsystem for managing information related to the HNB/HeNB.

Figure 2 shows a schematic diagram of a user accessing an EPS network through a WLAN. UE (User Equipment, user equipment) accesses RG (Residential Gateway, home gateway) through WiFi AP (Wireless Fidelity Access Point, wireless compatibility authentication access point), through AN (Access Note, access node (for example: DSLAM Digital Subscriber Line Access Multiplexer, Digital Subscriber Line Access Multiplexer)) access to BRAS (Broadband Remote Access Server)/BNG (Broadband Network Gateway), and finally access to EPS network. Among them, if the EPS network regards WLAN access as untrustworthy access, the WLAN needs to access the P-GW through the ePDG (Evolved Packet Data Gateway, evolved packet data gateway), and an IPSec tunnel needs to be established between the UE and the ePDG , to ensure the security of data exchange; if the EPS network regards WLAN access as a trusted access mode, then the WLAN can directly access the P-GW.

Regardless of which of the above ways the user accesses the EPS network, or when the user switches between the two types of access, in order to ensure the user's service experience and control the use of network resources, in the process of the user's business development, It is necessary to control the fixed and mobile network resources used by the business, that is, use the PCRF in Figure 1 and Figure 2 to realize the management and control of mobile network resources, and use BPCF (Broadband Policy Control Function, broadband policy control function) to realize the control of fixed network resources. At the same time, an S9* interface is established between PCRF and BPCF to realize the intercommunication of network resource control strategies.

In the prior art, the method of implementing policy control for the user's business is implemented as follows:

(1) After the PCRF receives an authorization request for using QoS (Quality of Service, quality of service) resources for the user to carry out the service, it generates an authorized QoS for the user to carry out the service. The above authorized QoS includes: QCI (QoSClass Identifier, Qos class identifier), MBR (Maximum Bit Rate, maximum bit rate), GBR (GuaranteedBit Rate, guaranteed bit rate) and ARP (Allocation Retension Priority, allocation and maintenance priority) and other information. PCRF sends the authorized QoS to BPCF in the form of QoS rules, and requests BPCF to perform admission control on it;

(2) When the BPCF receives the admission control request, it performs admission control. The implementation of admission control by BPCF needs to be combined with the available QoS of the fixed network or the QoS authorized by HNB/HeNB (the authorized QoS of HNB/HeNB is the fixed network QoS for HNB/HeNB that HNB/HeNB has signed with the fixed network operator in advance or in the HNB/HeNB The fixed network QoS allocated by BPCF and available for HNB/HeNB when HeNB is powered on and connected to EPS). If the available fixed network QoS or the available HNB/HeNB authorized QoS can meet the above authorized QoS, then BPCF accepts the request and returns a successful response to the PCRF; or even if the available fixed network QoS or available HNB/HeNB authorized QoS cannot meet the above authorized QoS , but the ARP indication resource preemption capability contained in the authorized QoS is higher than the resource preemption ability indicated by ARP in other authorized QoS, then the authorized QoS can be accepted by preempting the resources already allocated to other users, and the admission success is returned to PCRF the response to. If the resources cannot be obtained even through preemption (that is, the resource preemption capability indicated by the ARP contained in the authorized QoS is lower than the resource preemption capability indicated by the ARP in other authorized QoS), the BPCF needs to return a response of rejection to the PCRF;

(3) The PCRF sends a policy instruction to the policy enforcement network (such as S-GW or P-GW) according to the admission control result returned by the BPCF. If the BPCF admits and controls successfully, the PCRF sends the above-mentioned authorized QoS to the policy enforcement network element in the form of PCC rules or QoS rules for execution; if the BPCF refuses to accept, the PCRF needs to issue an authorization failure instruction to the policy enforcement network element, Or do not issue any policies;

(4) If the BPCF accepts the services carried out by the above-mentioned users, the policy enforcement network element performs QoS resource reservation according to the policy issued by the PCRF. Optionally, the BPCF issues the above-mentioned authorized QoS to a fixed network policy enforcement network element (for example, BNG or BRAS), and the fixed network network element performs resource reservation according to the received authorized QoS.

For the scenario shown in Figure 1, there are closed mode, open mode and hybrid mode for HNB/HeNB. The closed mode HNB/HeNB only accepts CSG (Closed Subscriber Group, Closed Subscriber Group) user access, while the open mode HNB/HeNB can accept any CSG user access, and does not distinguish between CSG users and non-CSG users. However, if it is a mixed-mode HNB/HeNB, it can admit users with any CSG attributes to access, but it is necessary to distinguish between CSG users and non-CSG users.

Similarly, users can also be divided into CSG users and non-CSG users. If a user accesses an HNB/HeNB with a mixed mode and starts services, the network should give priority to ensuring the service experience of CSG users. For example, when a CSG user develops services, if the network resource usage on the HNB/HeNB is tight, the network resources allocated to non-CSG users should be reduced or released at this time, and QoS guarantees should be provided for CSG users to develop services first. However, according to the existing technology, the policy control network element (PCRF and BPCF) does not consider the CSG information when implementing policy control, which may lead to the result that if the non-CSG user preferentially develops services and uses the resources allocated by the network, when the subsequent When a CSG user wants to start a service, the CSG user will be refused to start the service because the available network resources cannot meet the QoS requirements for the service of the CSG user. In this way, the requirement of providing QoS guarantee for the service of the CSG user in priority cannot be met.

Contents of the invention

The purpose of the present invention is to provide a method for realizing service admission control, so as to overcome that when the above-mentioned users access the EPS network through the HNB/HeNB to carry out services, because the policy control entity does not formulate a control policy according to the user CSG information, it cannot provide CSG users The problem of providing QoS guarantee is given priority in conducting business.

In order to solve the above problems, the present invention provides a method for implementing service admission control, which is applied in the Broadband Policy Control Function (BPCF), including:

Receive the admission control request for the user's service from the Policy and Charging Rules Function (PCRF);

Perform admission control on the admission control request according to closed subscriber group (CSG) information of the user.

further,

The performing admission control on the admission control request according to the user's CSG information specifically includes:

When the BPCF determines that the currently available authorized resources cannot fully satisfy the resource usage requirements indicated in the admission control request received by the BPCF, preferentially admit the services of the CSG user.

further,

The admission control request carries the CSG information of the user to carry out the service;

The preferential acceptance of services carried out by CSG users specifically includes:

Make a decision based on the CSG information carried in the admission control request and the CSG information of other users using the same Home Base Station (HNB) or Evolved Home Base Station (HeNB) as the user, and preferentially admit services carried out by CSG users.

further,

Before receiving the admission control request, the method further includes:

receiving the S9* session operation message sent by the PCRF, which carries the user's CSG information and user identification;

storing the CSG information of the user and the corresponding relationship between the user identifier;

Wherein, the S9* session operation message includes: an S9* session establishment message or an S9* session modification message.

further,

The admission control request carries the user identification of the user to carry out the service;

The preferential acceptance of services carried out by CSG users specifically includes:

Find the CSG information of the user according to the user identifier carried in the admission control request and make a decision in combination with the CSG information of other users using the same Home Base Station (HNB) or Evolved Home Base Station (HeNB) as the user, with priority Accept the business carried out by CSG users.

Further, the method also includes:

After receiving the S9* session modification message from the PCRF that carries the user identifier and the user's CSG information, if it is determined that the user identifier has been saved, and the saved CSG information corresponding to the user identifier is the same as If the received CSG information is different, replace the saved CSG information corresponding to the user identifier with the received CSG information.

In addition, the present invention also provides a method for implementing service admission control, which is applied to the policy and charging rule function PCRF _HNB that provides policy control services for home base station access, including:

Receive the admission control request for the user to carry out business from the femtocell gateway;

Perform admission control on the admission control request according to closed subscriber group (CSG) information of the user.

further,

The performing admission control on the admission control request according to the user's CSG information specifically includes:

When the PCRF _HNB judges that the currently available authorized resources cannot fully satisfy the resource usage requirements indicated in the admission control request received by the PCRF _HNB , it preferentially admits the services carried out by the CSG user.

Correspondingly, the present invention also provides a system for implementing service admission control, which is applied in the Broadband Policy Control Function (BPCF), including:

The first device is configured to receive an admission control request from a Policy and Charging Rules Function (PCRF) for carrying out services for a user;

The second means is configured to perform admission control on the admission control request according to closed subscriber group (CSG) information of the user.

further,

The second device is configured to perform admission control on the admission control request according to the user's CSG information, specifically including:

The second device is configured to, when it is determined that the currently available authorized resources cannot fully satisfy the resource usage requirements indicated in the admission control request received by the first device, preferentially admit the services carried out by the CSG user.

further,

The admission control request carries the CSG information of the user to carry out the service;

The second device is used to preferentially accept services carried out by CSG users, specifically including:

The second device is configured to make a decision based on the CSG information carried in the admission control request and the CSG information of other users using the same home base station (HNB) or evolved home base station (HeNB) as the user, preferably Accept the business carried out by CSG users.

Further, the system also includes:

The third device is configured to receive the S9* session operation message sent by the PCRF, which carries the user's CSG information and user identifier;

It is also used to save the CSG information of the user and the corresponding relationship between the user identifier;

Wherein, the S9* session operation message includes: an S9* session establishment message or an S9* session modification message.

further,

The admission control request carries the user identification of the user to carry out the service;

The second device is used to preferentially accept services carried out by CSG users, specifically including:

The second device is configured to look up the user's CSG information according to the user identifier carried in the admission control request and combine it with other users who use the same home base station (HNB) or evolved home base station (HeNB) as the user CSG information is used to make decisions, and the services carried out by CSG users are given priority.

Further, the system also includes:

The fourth device is configured to, after receiving the S9* session modification message from the PCRF that carries the user identifier and the user's CSG information, if it is determined that the user identifier has been saved, and the saved user If the CSG information corresponding to the identifier is different from the received CSG information, replace the stored CSG information corresponding to the user identifier with the received CSG information.

Correspondingly, a system for implementing service admission control is applied to the policy and charging rule function PCRF _HNB that provides policy control services for home base station access, including:

The first device is configured to receive an admission control request for a user to carry out services sent by the home base station gateway;

The second means is configured to perform admission control on the admission control request according to closed subscriber group (CSG) information of the user.

further,

The second device is configured to perform admission control on the admission control request according to the user's CSG information, specifically including:

The second device is configured to give priority to admitting services carried out by CSG users when it is determined that the currently available authorized resources cannot fully meet the resource usage requirements indicated in the admission control request received by the PCRFHNB.

The present invention solves the problem of how to give priority to providing QoS guarantee for CSG users when the fixed network resources authorized for mobile access are in short supply.

Description of drawings

FIG. 1 is a schematic diagram of the architecture of HeNB accessing EPS in the prior art;

FIG. 2 is a schematic diagram of the architecture of WLAN access to EPS in the prior art;

FIG. 3 is a network structure diagram of selecting different PCRFs for different user equipment access networks in an embodiment of the present invention;

Fig. 4 is a network structure diagram containing PCRF _HNB in the embodiment of the present invention;

Fig. 5 is a flow chart of the application example 1 of the present invention;

Fig. 6 is a flow chart of the second application example of the present invention;

Fig. 7 is a flow chart of the third application example of the present invention;

Fig. 8 is a flowchart of application example 4 of the present invention.

detailed description

In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

According to the difference in timing and granularity of S9* session establishment, the following two situations currently cannot realize the admission control of user services based on CSG information, so that it is impossible to provide QoS guarantee for CSG user services first:

One situation is: when a user attaches to an EPC (Evolved Packet Core, evolved packet core network) network, an S9* session is established. In this case, the S9* session is at the user level, and each S9* session is used by the corresponding user and cannot be shared by other users. The policy control session establishment process in the user attach phase is described as follows:

When user equipment attaches to the network through HNB/HeNB and establishes a policy control session (such as IP-CAN session, IP-Connectivity Access Network session, IP connection access network session), the core network element (such as P-GW) according to An existing DRA (Diameter Route Agent, Diameter, routing agent) mechanism selects a PCRF for accessing the user equipment, and reports the CSG related information of the user to the selected PCRF. However, according to the DRA mechanism, it is possible to select different PCRFs for different user equipments to access the network. As shown in Figure 3, when UE1, UE2 and UE3 attach to the network from the same HNB/HeNB, PCRF1 is selected to serve UE1, and PCRF2 is UE2 serves, PCRF3 serves UE3, and PCRF1, PCRF2, and PCRF3 are based on IPSec tunnels (secure tunnels established between HNB/HeNB and SeGW, all users and EPC network interaction data under the HNB/HeNB access use the same IPSec tunnel Encrypted data) information selects the same BPCF and establishes S9* sessions respectively. In this case, each PCRF can only perceive the CSG information provided by the UE it serves, but cannot perceive the CSG information of all users under the HNB/HeNB (for example, PCRF1 only has the CSG information of user 1, but does not perceive the CSG information of user 2 and user 3's CSG information). However, if CSG information-based admission control is to be implemented, it is necessary to perceive the CSG information of all users connected to the HNB/HeNB. Therefore, in this case, the PCRF cannot realize the admission control based on CSG information for the above-mentioned users, so that priority cannot be achieved. Provide QoS guarantee for the services carried out by CSG users. In addition, users who access through the same HNB/HeNB or through different HNB/HeNBs (but these HNB/HeNBs use the same fixed network access line backhaul (backhaul line) and share the HNB/HeNB authorized QoS) will choose the same BPCF, However, according to the prior art, BPCF only receives authorized QoS information (ie, QoS rules) from PCRF, and authorized QoS does not contain user-related information, that is, BPCF cannot perceive user information at present, so BPCF cannot perform the above-mentioned information based on CSG information on BPCF. Users carry out services to perform admission control, so it is impossible to provide QoS guarantee for the services carried out by CSG users in priority.

Another situation is: the S9* session is established when the HNB/HeNB is powered on. The S9* session in this case is at the HNB/HeNB level, and the S9* session is shared by all users connected by the HNB/HeNB. The policy control session establishment process in this case is described as follows:

When the HNB/HeNB is powered on, the HNBGW selects the PCRF _HNB and establishes an S15 session. The PCRF _HNB is used to provide policy control services for the above-mentioned HNB/HeNB access, that is, to provide resource management for users accessing through the HNB to use HNB resources. An S9* session is established between the PCRF _HNB and the BPCF. Subsequently, when the UE attaches to the EPC through the HNB/HeNB, the PCRF serving the UE is discovered according to the DRA mechanism, and a policy control session is established between the core network element (such as P-GW) and the PCRF. However, according to the DRA mechanism, it is possible to select different PCRFs for different user equipments to access the network. As shown in Figure 4, when UE1, UE2, and UE3 attach to the network from the same HNB/HeNB, PCRF1 is selected to serve UE1, and PCRF2 is UE2 serves, and PCRF3 serves UE3, but the S9* session established during the HNB/HeNB power-on phase is shared by all UEs accessed through it. In this case, each PCRF can only perceive the CSG information provided by the UE it serves, but cannot perceive the CSG information of all users under the HNB/HeNB (for example, PCRF1 only has the CSG information of user 1, but does not perceive the CSG information of user 2 and the CSG information of user 3), and if CSG information-based admission control is to be realized, it is necessary to perceive the CSG information of all users connected by the HNB/HeNB, so in this case, PCRF cannot implement services for the above-mentioned users based on CSG information Admission control is performed, so that QoS guarantees for services carried out by CSG users cannot be realized preferentially. In addition, the PCRF _HNB selected in the HNB/HeNB power-on phase will serve all users accessed through the HNB/HeNB, and the BPCF selected in the S9* session establishment phase will also serve all users accessed through the HNB/HeNB However, according to the prior art, neither the PCRF _HNB nor the BPCF can obtain the CSG information of all access users under the HNB/HeNB, so the PCRF _HNB or the BPCF cannot perform admission control on the above-mentioned users based on the CSG information, Therefore, it is impossible to provide QoS guarantee for the services carried out by CSG users preferentially.

A method for implementing service admission control, applied in BPCF, comprising:

Receive the admission control request for the user's business from the PCRF;

The admission control is performed on the above admission control request according to the CSG information of the user.

In an embodiment of the present invention, admission control is performed on the above-mentioned admission control request according to the user's CSG information, specifically including:

If the BPCF determines that the currently available authorized resources cannot fully meet the resource usage requirements indicated in the admission control request received by the BPCF, it will preferentially admit the services provided by CSG users with CSG information, that is, preferentially admit the services provided by CSG users.

In an embodiment of the present invention, the above-mentioned admission control request carries CSG information of the user whose service is to be launched;

The above-mentioned priority acceptance of CSG information is for the services of CSG users, including:

Make a decision based on the CSG information carried in the admission control request and the CSG information of other users using the same HNB or HeNB as the user, and preferentially admit the CSG information carried in the admission control request to a service carried out by the CSG user.

In another embodiment of the present invention, before receiving the above admission control request, the method further includes:

Receive the S9* session operation message sent by the PCRF, which carries the user ID of the relevant user and the CSG information of the user;

Save the corresponding relationship between the user ID of each user and the CSG information of the user;

Wherein, the S9* session operation message includes: an S9* session establishment message or an S9* session modification message.

In another embodiment of the present invention, the admission control request may also carry the user identification of the user to carry out the service;

Correspondingly, CSG information is given priority to the services carried out by users of CSG users, including:

Find the corresponding CSG information according to the user ID carried in the admission control request, and then make a decision based on the CSG information of other users who use the same HNB or HeNB as the user, and give priority to admitting the services of users whose CSG information is the CSG user. .

Additionally, the method includes:

After receiving the S9* session modification message carrying the user ID and user CSG information sent by the PCRF, if the user ID has been saved on the BPCF, but the CSG information corresponding to the user ID saved on the BPCF is different from the user ID If the received CSG information is different, replace the saved CSG information with the received CSG information.

Correspondingly, in this embodiment, a system for implementing service admission control is applied to the Broadband Policy Control Function (BPCF), including:

The first device is configured to receive an admission control request from a Policy and Charging Rules Function (PCRF) for carrying out services for a user;

The second means is configured to perform admission control on the admission control request according to closed subscriber group (CSG) information of the user.

Preferably,

The second device is configured to perform admission control on the admission control request according to the user's CSG information, specifically including:

The second device is configured to, when it is determined that the currently available authorized resources cannot fully satisfy the resource usage requirements indicated in the admission control request received by the first device, preferentially admit the services carried out by the CSG user.

Preferably,

The admission control request carries the CSG information of the user to carry out the service;

The second device is used to preferentially accept services carried out by CSG users, specifically including:

The second device is configured to make a decision based on the CSG information carried in the admission control request and the CSG information of other users using the same home base station (HNB) or evolved home base station (HeNB) as the user, preferably Accept the business carried out by CSG users.

Preferably, the system also includes:

The third device is configured to receive the S9* session operation message sent by the PCRF, which carries the user's CSG information and user identification;

It is also used to save the CSG information of the user and the corresponding relationship between the user identifier;

Wherein, the S9* session operation message includes: an S9* session establishment message or an S9* session modification message.

Preferably,

The admission control request carries the user identification of the user to carry out the service;

The second device is used to preferentially accept services carried out by CSG users, specifically including:

The second device is configured to look up the user's CSG information according to the user identifier carried in the admission control request and combine it with other users who use the same home base station (HNB) or evolved home base station (HeNB) as the user CSG information is used to make decisions, and the services carried out by CSG users are given priority.

Preferably, the system also includes:

The fourth device is configured to, after receiving the S9* session modification message from the PCRF that carries the user identifier and the user's CSG information, if it is determined that the user identifier has been saved, and the saved user If the CSG information corresponding to the identifier is different from the received CSG information, replace the stored CSG information corresponding to the user identifier with the received CSG information.

In this embodiment, another implementation method of service admission control is applied to the policy and charging rule function PCRFHNB that provides policy control services for home base station (including HNB or HeNB) access, including:

Receive the admission control request for the user to carry out business from the femtocell gateway;

Perform admission control on the admission control request according to the CSG information of the user.

Wherein, the admission control is performed on the admission control request according to the user's CSG information, specifically including:

When the PCRF _HNB judges that the currently available authorized resources cannot fully satisfy the resource usage requirements indicated in the admission control request received by the PCRF _HNB , it preferentially admits the services carried out by the CSG user.

Correspondingly, a system for implementing service admission control is applied to the policy and charging rule function PCRF _HNB that provides policy control services for home base station access, including:

The first device is configured to receive an admission control request for a user to carry out services sent by the home base station gateway;

The second means is configured to perform admission control on the admission control request according to closed subscriber group (CSG) information of the user.

Preferably,

The second device is configured to perform admission control on the admission control request according to the user's CSG information, specifically including:

The second device is configured to give priority to admitting services carried out by CSG users when it is determined that the currently available authorized resources cannot fully meet the resource usage requirements indicated in the admission control request received by the PCRF _HNB .

The present invention will be further described below with several examples of the present invention.

Application example one:

Assume that UE-A and UE-B access the EPS network through the same HNB/HeNB, where user A using UE-A is a CSG user, and user B using UE-B is a non-CSG user. UE-A and UE-B carry out services at the same time, and the network needs to combine the user's CSG information to perform admission control for the services they carry out.

Before starting the service, the user needs to attach to the EPS network through the HNB/HeNB. During the attachment process, the user needs to share the IPSec tunnel information used by the user (that is, the IPSec tunnel information established between the HNB/HeNB and the Se-GW, including the HNB/HeNB local IP address) and other information (such as user ID, user CSG information, etc.) are sent to PCEF/BBERF. In this embodiment, user A and user B are attached to the EPS network through HNB/HeNB as an example. During the attachment process, user A and user B need to send their respective user IDs, CSG information, and IPSec tunnel information to PCEF /BBERF.

The DRA accesses the PCRF that selects the service for each user according to the user identifier. The DRA selects PCRF-A to serve UE-A, and selects PCRF-B to serve UE-B. Then, PCEF/BBERF establishes a policy control session with PCRF-A and PCRF-B respectively, and sends user A's identification information, IPSec tunnel information, user A's CSG information, etc. to PCRF-A, and user B's identification information, The IPSec tunnel information, the CSG information of user B, etc. are sent to PCRF-B.

PCRF-A and PCRF-B respectively discover BPCF according to the HNB/HeNB local IP address in the IPSec tunnel information received during the UE-A and UE-B attach process, and establish an S9* session. Since UE-A and UE-B use the same HNB/HeNB to access EPS, PCRF-A and PCRF-B will select the same BPCF according to the IPSec tunnel information.

Assuming that UE-A and UE-B carry out services at the same time at this time, the process of BPCF providing admission control for them is shown in Figure 5, including:

501. PCRF-A and PCRF-B respectively receive authorization requests from UE-A and UE-B to perform services. For example: if the service is initiated by the user, the PCRF receives the resource authorization request from PCEF/BBERF; if the service is initiated by the network, the PCRF receives the service authorization request from the AF;

502. PCRF-A and PCRF-B respectively make policy decisions for the received authorization requests. PCRF-A generates authorized QoS-A (indicated by QoS rule-A) for UE-A, and PCRF-B generates authorized QoS-B (indicated by QoS rule-B) for UE-B to carry out the service;

513. Through the S9* session established in the attach phase, PCRF-A initiates an admission control request to BPCF, which carries QoS rule-A and CSG information of user A, and PCRF-B initiates an admission control request to BPCF, which carries QoS rule-B and user B's CSG information.

514. BPCF performs admission control on QoS rule-A and QoS rule-B respectively according to the CSG information of user A and user B, because at this time the authorized QoS of HNB/HeNB cannot meet the needs of UE-A and UE-B to carry out services at the same time , and user A is a CSG user, and user B is a non-CSG user, so BPCF accepts QoS rule-A, that is, accepts UE-A to carry out the above services, and rejects QoS rule-B, that is, refuses to accept UE-B to carry out services;

515. The BPCF returns the admission control result to the PCRF. BPCF returns an admission control acceptance response to PCRF-A; BPCF returns an admission control rejection response to PCRF-B;

516. According to the admission control result returned by the BPCF, the PCRF decides whether to issue a policy.

When PCRF-A receives the response message of admission control acceptance, it sends the QoS rule-A to BBERF, or sends the PCC rule-A corresponding to QoS rule-A to PCEF; when PCRF-B receives the admission control rejection After the response message, release the QoS rule-B. If it is a service initiated by UE-B, PCRF-B returns an authorization failure response to PCEF/BBERF. If it is a service initiated by the network, PCRF-B returns an authorization to AF Failed response.

517. After the PCEF/BBERF receives the policy issued by the PCRF-A, execute the policy, and complete bearer resource reservation between the UE-A and the PCEF/BBERF according to the authorized QoS-A.

Application example two:

Assuming that UE-A and UE-B access the EPS network through the same HNB/HeNB, user A using UE-A is a CSG user, and user B using UE-B is a non-CSG user. UE-A and UE-B carry out services at the same time, and the network needs to combine the CSG information of user A and user B to perform admission control for the services they carry out.

During the attachment process, UE-A and UE-B send the corresponding CSG information and user identification information of user A and user B to the BPCF, and the BPCF stores the relevant information.

BPCF implements the admission control process for users to carry out business, as shown in Figure 6, including:

601. UE-A attaches to the EPS network through the HNB/HeNB;

602. PCEF/BBERF receives an attach request from UE-A, which includes user A's identification information and IPSec tunnel information, etc.; DRA discovers PCRF-A according to the user identification, and PCEF/BBERF and PCRF-A establish policies Control the session and initiate an authorization request to PCRF-A.

603. PCRF-A completes the policy decision;

604. PCRF-A discovers BPCF according to the HNB/HeNB IP address in the IPSec tunnel information, and establishes an S9* session, and then sends user A's identification information and CSG information to BPCF for storage;

605. PCRF-A sends a policy to PCEF/BBERF, and at the same time sends an Eventtrigger (event trigger) to PCEF/BBERF, subscribes to the event of user A's CSG information change, and requests that if user A's CSG information changes, report to PCRF- A;

606. The attachment process is completed between UE-A and PCEF/BBERF;

For the attach process of UE-B, refer to the attach process of UE-A, which will not be repeated here.

607. The PCEF/BBERF detects that the CSG information of user A changes;

608. The PCEF/BBERF performs event reporting, notifies PCRF-A that the CSG information of user A has changed, and reports the latest CSG information of user A to PCRF-A;

609. PCRF-A initiates an S9* session modification message to BPCF, and sends the identification information of user A and the latest CSG information to BPCF, and BPCF updates accordingly;

610. PCRF-A and PCRF-B respectively receive authorization requests from UE-A and UE-B for service development. For example: if the service is initiated by the user, the PCRF receives the resource authorization request from the PCEF/BBERF; if the service is initiated by the network, the PCRF receives the service authorization request from the AF.

611. PCRF-A and PCRF-B make policy decisions respectively for the received authorization requests. PCRF-A generates authorized QoS-A (indicated by QoS rule-A) for UE-A, and PCRF-B generates authorized QoS-B (indicated by QoS rule-B) for UE-B to carry out the service;

612. Through the S9* session established in the attach phase, PCRF-A initiates an admission control request to BPCF, which carries QoS rule-A and identification information of user A, and PCRF-B initiates an admission control request to BPCF, which carries QoS rule-B and user B's identification information.

613. The BPCF searches for the CSG information of user A and user B according to the received identification information of user A and user B respectively, and then correspondingly performs QoS rule-A and QoS rule-B according to the CSG information of the two respectively. Admission control.

Since the authorized QoS of HNB/HeNB cannot meet the needs of UE-A and UE-B to carry out services at the same time, and user A is a CSG user, user B is a non-CSG user, so BPCF accepts QoS rule-A and rejects QoS rule -B, that is, accepting UE-A to conduct services, and refusing to accept UE-B to conduct services.

614. The BPCF returns an admission control result to the PCRF, that is, the BPCF returns an admission control acceptance response to PCRF-A, and returns an admission control rejection response to PCRF-B.

615. According to the admission control result returned by the BPCF, the PCRF decides whether to issue a policy.

When PCRF-A receives the response message of admission control acceptance, it sends the QoS rule-A to BBERF, or sends the PCC rule-A corresponding to QoS rule-A to PCEF; when PCRF-B receives the admission control rejection After the response message, release the QoS rule-B. If it is a service initiated by UE-B, PCRF-B returns an authorization failure response to PCEF/BBERF. If it is a service initiated by the network, PCRF-B returns an authorization to AF Failed response.

616. After the PCEF/BBERF receives the policy issued by the PCRF-A, execute the policy, and complete bearer resource reservation between the UE-A and the PCEF/BBERF according to the authorized QoS-A.

Application example three:

This example is aimed at the process in which a user develops services and implements admission control after attaching to the EPS system through the HNB. According to the architecture shown in Figure 1, if the user accesses the EPS through the HNB, the HNBGW must be deployed. When the HNB is powered on, the HNB GW discovers the PCRF _HNB serving the HNB access and establishes an S15 session, and sends the IPSec tunnel information to the PCRF _HNB , and the PCRF _HNB discovers the BPCF according to the HNB IP address in the IPSec tunnel information, and then communicates with The BPCF establishes the S9* session.

When a user attaches to the EPS network through the HNB, the HNB GW sends the user's CSG information and identification information to the PCRF _HNB , and the PCRF _HNB sends the user's CSG information and identification information to the BPCF through the S9* session for storage.

The flow of BPCF implementing policy control on UE-A and UE-B services is shown in Figure 7, including:

701. The HNB is powered on, and registers with the HNB GW;

702, the HNB GW and the PCRF _HNB establish an S15 session, and send the IPSec tunnel information to the PCRF _HNB ;

703. The PCRF _HNB discovers BPCF according to the IPSec tunnel information, and establishes an S9* session;

704. UE-A initiates the process of attaching to the EPS through the HNB;

705. The HNB GW initiates S15 session modification, and sends the identification information of user A and the CSG information of user A to PCRF _HNB ;

If admission control is implemented on the BPCF, the PCRF _HNB sends the received user A's identification information and user A's CSG information to the BPCF for storage.

706. After receiving the attach request initiated by UE-A, the PCEF/BBERF discovers PCRF-A according to the identification information of user A, and initiates an authorization request;

707. The PCRF-A makes a policy decision on the UE-A's request;

708. PCRF-A sends a policy to PCEF/BBERF;

709. The attachment process is completed between UE-A and PCEF/BBERF;

710. UE-B attaches to the EPS network through the aforementioned HNB according to the same process as UE-A;

711. PCRF-A and PCRF-B respectively receive authorization requests from UE-A and UE-B to carry out services. For example: if it is a service initiated by user A/B, PCRF-A/PCRF-B receives a resource authorization request from PCEF/BBERF; if it is a service initiated by the network, PCRF-A/PCRF-B receives is a service authorization request from AF;

712. PCRF-A and PCRF-B make policy decisions respectively for the received authorization requests. PCRF-A generates authorized QoS-A (indicated by QoS rule-A) for UE-A, and PCRF-B generates authorized QoS-B (indicated by QoS rule-B) for UE-B to carry out the service;

713. PCRF-A sends the authorization for UE-A to PCEF/BBERF; PCRF-B sends the authorization for UE-B to PCEF/BBERF;

714. The PCEF/BBERF initiates a corresponding bearer operation according to the policy issued by the PCRF-A/PCEF-B, and reserves corresponding resources.

715. After receiving the bearer operation request, the HNB GW initiates an admission control request for UE-A and an admission control request for UE-B to the PCRF _HNB respectively; wherein, the admission control request for UE-A carries: QoS rule- A. User A's identification information and user A's CSG information, etc.; the admission control request for UE-B carries: QoS rule-B, user B's identification information, user B's CSG information, etc.;

716. The PCRF _HNB performs admission control on the admission control request for UE-A and the admission control request for UE-B according to the CSG information of the user connected to the HNB. Since the QoS authorized by HNB cannot meet the QoS requirements of UE-A and UE-B at the same time, and UE-A is a CSG user and UE-B is a non-CSG user, the PCRF accepts UE-A to carry out services, but rejects UE- B conducts business.

If the admission control is performed by BPCF, in this step, after receiving the admission control request, the PCRF _HNB sends the QoS rule information corresponding to UE-A and UE-B and the CSG information of user A and user B to BPCF, and the The BPCF performs admission control on the QoS resources used by UE-A and UE-B in combination with the user's CSG information, and sends the result to the PCRF _HNB .

717. The PCRF _HNB sends the result of the admission control (that is, accepting UE-A to conduct services, and rejecting UE-B to conduct services) to the HNB GW;

718. The HNB GW executes a policy according to the admission control result returned by the PCRF _HNB , and initiates a bearer resource reservation process to UE-A.

719. According to the admission control result, the HNB GW initiates the release of bearer resources corresponding to the UE-B between the PCEF/BBERF.

Application example four:

This example describes the implementation of admission control for UEs under different accesses that share the same fixed network backhaul to carry out services simultaneously. For example: user A accesses EPS through HeNB, and UE-user A is a CSG user; user B accesses EPS through WLAN. UE-A and UE-B carry out business at the same time, and BPCF implements admission control. It should be noted that users accessing through WLAN are not divided into CSG users and non-CSG users.

UE-A attaches to the EPS network through HeNB, and PCEF discovers PCRF-A according to user A's identification information, and sends user A's identification information, user A's CSG information, and IPSec tunnel information to PCRF-A. PCRF-A discovers BPCF according to the IPSec tunnel information, establishes an S9* session, and sends user A's identification information and user A's CSG information to BPCF for storage.

UE-B attaches to the EPS network through WLAN. Assuming that the fixed network does not support the authentication method based on 3GPP (The 3rd Generation Partnership Project, the 3rd Generation Partnership Project), the fixed network does not perceive the access of UE-B. UE-B and ePDG After the PCEF finds the PCRF-B according to the identification information of the user B, the PCEF sends the identification information of the user B, the CSG information of the user B, and the IPSec tunnel information to the PCRF-B. PCRF-B discovers BPCF according to the IPSec tunnel information, establishes an S9* session, and sends user B's identification information to BPCF for storage. Since UE-B accesses through WLAN, there is no CSG information. Since UE-A and UE-B use the same fixed network backhaul to access the EPS network, the BPCF discovered by PCRF-A based on the IPSec tunnel information used by UE-A and the BPCF discovered by PCRF-B based on the IPSec tunnel information used by UE-B BPCF is the same.

The process of BPCF implementing policy control on UE-A and UE-B services is shown in Figure 8, including:

801. The process of UE-A attaching to the EPS through the HeNB is the same as steps 601-606 in the above application example 2, and will not be repeated here;

802. UE-B initiates attachment to the EPS network through the WLAN;

803. After receiving the attach request from UE-B, the PCEF discovers PCRF-B according to the identification information of user B, and initiates an authorization request to PCRF-B. The request carries: the identification information of user B and the local IP of UE-B address;

804. PCRF-B makes a policy decision on the attach request of UE-B;

805. PCRF-B discovers BPCF according to the local IP address of UE-B, establishes an S9* session, and sends the identification information of user B to BPCF for storage;

806. The PCRF-B returns the policy to the PCEF;

807. Other processes of completing attachment between UE-B and PCEF.

808. PCRF-A and PCRF-B respectively receive authorization requests from UE-A and UE-B to perform services. For example: if the service is initiated by the user, the PCRF receives the resource authorization request from the PCEF; if the service is initiated by the network, the PCRF receives the service authorization request from the AF.

809. PCRF-A and PCRF-B make policy decisions respectively for the received authorization requests. PCRF-A generates authorized QoS-A (indicated by QoS rule-A) for UE-A, and PCRF-B generates authorized QoS-B (indicated by QoS rule-B) for UE-B to carry out the service;

810. Through the S9* session established in the attach phase, PCRF-A initiates an admission control request to BPCF, which carries QoS rule-A and identification information of user A, and PCRF-B initiates an admission control request to BPCF, which carries QoS rule-B and user B's identification information;

811. The BPCF acquires the CSG information of user A and user B according to the received identification information of user A and user B respectively.

BPCF knows that user A is a CSG user, but user B has no CSG information. Therefore, when performing admission control on QoS rule-A and QoS rule-B, the authorized QoS of HeNB cannot satisfy UE-A and UE-B at the same time. Service needs, and user A is a CSG user, and should give priority to QoS guarantee, so BPCF accepts QoS rule-A, but rejects QoS rule-B, that is: accept UE-A to carry out business, refuse to accept UE-B to carry out business.

812. The BPCF returns an admission control result to the PCRF, that is, the BPCF returns an admission control acceptance response to PCRF-A, and returns an admission control rejection response to PCRF-B.

813. According to the admission control result returned by the BPCF, the PCRF decides whether to issue a policy.

After the PCRF-A receives the admission control acceptance response message, it sends the PCC rule-A to the PCEF. When PCRF-B receives the response message of admission control rejection, it releases PCC rule-B; if it is a service initiated by UE-B, PCRF-B returns an authorization failure response to PCEF; if it is a service initiated by the network, then PCRF-B returns a response of authorization failure to AF.

814. After the PCEF receives the policy issued by the PCRF-A, it executes the policy, and completes bearer resource reservation between the UE-A and the PCEF according to the authorized QoS-A.

To sum up, through the above embodiments of the present invention, the problem of how to implement service admission management and resource management is solved, so that the total QoS demand does not exceed the QoS provided by the contracted fixed network line accessed by the home base station.

Those skilled in the art can understand that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a magnetic disk or an optical disk, and the like. Optionally, all or part of the steps in the foregoing embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiments may be implemented in the form of hardware, or may be implemented in the form of software function modules. The present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. According to the content of the present invention, there can also be other various embodiments. Those skilled in the art can make various corresponding changes and deformations according to the present invention without departing from the spirit and essence of the present invention. Within the spirit and principles of the present invention, any modifications, equivalent replacements, improvements, etc., shall be included within the protection scope of the present invention.

Claims (8)

1. A method for realizing service admission control is applied to a Broadband Policy Control Function (BPCF) and comprises the following steps:

receiving an S9 session operation message sent by a policy and charging rule function PCRF, wherein the session operation message carries closed subscriber group CSG information and a subscriber identity of a subscriber; storing the corresponding relation between the CSG information of the user and the user identifier; receiving an admission control request aiming at the user service development sent by the PCRF;

performing admission control on the admission control request according to the Closed Subscriber Group (CSG) information of the user, specifically comprising: when the BPCF judges that the resource use requirements indicated in the admission control request received by the BPCF by the current available authorized resources can not be completely met, the business developed by the CSG user is admitted preferentially;

the admission control request carries CSG information of a user to be performed with a service, and the service that is preferentially admitted to be performed by a CSG user specifically includes: making a decision according to the CSG information carried in the admission control request and the CSG information of other users using the same HNB or an evolved HNB as the user, and preferentially admitting the service developed by the CSG user; or

The admission control request carries a user identifier of a user who needs to develop a service, and the service which is preferentially admitted to be developed by the CSG user specifically comprises the following steps: and searching the CSG information of the user according to the user identification carried in the admission control request, and making a decision by combining the CSG information of other users using the same HNB or an evolved HNB as the user, so as to preferentially admit the service developed by the CSG user.

2. The method of claim 1, wherein:

the S9 session operation message includes: s9 session setup message or S9 session modify message.

3. The method of claim 2, wherein the method further comprises:

after receiving an S9 session modification message sent by the PCRF and carrying a subscriber identity and CSG information of the subscriber, if it is determined that the subscriber identity is already stored and the stored CSG information corresponding to the subscriber identity is different from the received CSG information, replacing the stored CSG information corresponding to the subscriber identity with the received CSG information.

4. A method for realizing service admission control is applied to a policy and charging rules function PCRF for providing policy control service for femtocell access_HNBIn, comprising:

receiving an admission control request aiming at a user to develop a service from a home base station gateway, wherein the admission control request carries Closed Subscriber Group (CSG) information and a user identifier of the user;

performing admission control on the admission control request according to the Closed Subscriber Group (CSG) information of the user, specifically comprising: when the PCRF_HNBJudging the current available authorization resources to PCRF_HNBWhen the resource use requirements indicated in the received admission control request cannot be completely met, the service developed by the CSG user is admitted preferentially;

the service of preferentially admitting the CSG user includes: making a decision according to the CSG information carried in the admission control request and the CSG information of other users using the same HNB or an evolved HNB as the user, and preferentially admitting the service developed by the CSG user; or, searching the CSG information of the user according to the user identification carried in the admission control request, and making a decision by combining the CSG information of other users using the same HNB or an evolved HNB as the user, so as to preferentially admit the service developed by the CSG user.

5. A realization system of service admission control is applied to a Broadband Policy Control Function (BPCF) and comprises the following steps:

a first device, configured to receive an admission control request for a user to develop a service, where the admission control request is sent by a policy and charging rules function PCRF;

a second device, configured to perform admission control on the admission control request according to CSG information of a user, where the second device specifically includes: when judging that the resource use requirements indicated in the admission control request received by the first device by the current available authorized resources cannot be completely met, preferentially admitting the service developed by the CSG user;

the admission control request carries CSG information of a user to be performed with a service, and the service that is preferentially admitted to be performed by a CSG user specifically includes: making a decision according to the CSG information carried in the admission control request and the CSG information of other users using the same HNB or an evolved HNB as the user, and preferentially admitting the service developed by the CSG user; or,

the admission control request carries a user identifier of a user who needs to develop a service, and the service which is preferentially admitted to be developed by the CSG user specifically comprises the following steps: searching the CSG information of the user according to the user identification carried in the admission control request, and making a decision by combining the CSG information of other users using the same HNB or an evolved HNB as the user, and preferentially admitting the service developed by the CSG user;

a third device, configured to receive an S9 session operation message sent by the PCRF, where the session operation message carries CSG information of a user and a user identifier; and the CSG management module is also used for saving the corresponding relation between the CSG information of the user and the user identifier.

6. The system of claim 5, further comprising:

the S9 session operation message includes: s9 session setup message or S9 session modify message.

7. The system of claim 6, further comprising:

a fourth device, configured to, after receiving an S9 session modification message that is sent by the PCRF and carries a subscriber identity and CSG information of the subscriber, replace, if it is determined that the subscriber identity is already stored and the stored CSG information corresponding to the subscriber identity is different from the received CSG information, the stored CSG information corresponding to the subscriber identity with the received CSG information.

8. A realization system for business admission control is applied to a policy and charging rule function PCRF for providing policy control service for home base station access_HNBIn, comprising:

the system comprises a first device and a second device, wherein the first device is used for receiving an admission control request aiming at a user to develop services from a home base station gateway, and the admission control request carries Closed Subscriber Group (CSG) information and a user identifier of the user;

a second device, configured to perform admission control on the admission control request according to CSG information of a user, where the second device specifically includes: the second device is used for judging the current available authorization resources to PCRF_HNBWhen the resource use requirements indicated in the received admission control request cannot be completely met, the service developed by the CSG user is admitted preferentially;

the service of preferentially admitting the CSG user includes: making a decision according to the CSG information carried in the admission control request and the CSG information of other users using the same HNB or an evolved HNB as the user, and preferentially admitting the service developed by the CSG user; or, searching the CSG information of the user according to the user identification carried in the admission control request, and making a decision by combining the CSG information of other users using the same HNB or an evolved HNB as the user, so as to preferentially admit the service developed by the CSG user.