WO2012152170A1 - 一种业务接纳控制的实现方法及系统 - Google Patents

一种业务接纳控制的实现方法及系统 Download PDF

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Publication number
WO2012152170A1
WO2012152170A1 PCT/CN2012/074088 CN2012074088W WO2012152170A1 WO 2012152170 A1 WO2012152170 A1 WO 2012152170A1 CN 2012074088 W CN2012074088 W CN 2012074088W WO 2012152170 A1 WO2012152170 A1 WO 2012152170A1
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Prior art keywords
user
csg
admission control
service
information
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PCT/CN2012/074088
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English (en)
French (fr)
Inventor
毛玉欣
周晓云
宗在峰
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中兴通讯股份有限公司
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Publication of WO2012152170A1 publication Critical patent/WO2012152170A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/02Access restriction performed under specific conditions

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method and system for implementing service admission control. Background technique
  • the Evolved Packet System developed by the 3rd Generation Partnership Project (3GPP) is composed of Mobility Management Entity (MME) and Yueliang Gateway (Serving). Gateway, abbreviated as S-GW), Packet Data Network Gateway (P-GW), and Home Subscriber Server (HSS) are composed of network elements, as shown in Figure 1.
  • MME Mobility Management Entity
  • S-GW Packet Data Network Gateway
  • P-GW Packet Data Network Gateway
  • HSS Home Subscriber Server
  • the MME is responsible for the control planes such as mobility management, non-access stratum signaling processing, and user mobility management context management; the S-GW forwards data between the user access and the P-GW, and is responsible for paging waiting. The data is cached; the P-GW is a border gateway of the EPS and Packet Data Network (PDN) network, which is responsible for PDN access and forwarding data between the EPS and the PDN.
  • PDN Packet Data Network
  • the Policy and Charging Rules Function performs policy and charging rules.
  • the Rx is connected to an application function (Application Function, abbreviated as AF) in the service network protocol of the Internet Protocol (IP), and obtains service information, which is used to generate service information of the PCC policy.
  • Application Function abbreviated as AF
  • IP Internet Protocol
  • PCRF Policy and Charging Rules Function
  • S5 interface between the S-GW and the P-GW uses the GTP (GPRS Tunneling Protocol) protocol
  • GTP GPRS Tunneling Protocol
  • PCEF Policy and Charging Enforcement Function
  • the PCRF exchanges information with the P-GW through the Gx interface, and is responsible for initiating the establishment, modification, and release of the bearer, ensuring the quality of service (QoS) of the service data transmission, and performing charging control.
  • QoS quality of service
  • PMIP Proxy Mobile IP
  • the S-GW is stationed in the S-GW.
  • Bearer Binding and Event Report Function (BBERF) and the S-GW and the PCRF exchange information through the Gxc interface.
  • the BBERF is responsible for initiating the establishment, modification and release of the bearer to ensure the service data. Quality of service, charge control by PCEF.
  • the Radio Access Network (E-UTRAN for short) is connected to the EPS network.
  • the user can access the EPS network through a Home NodeB subsystem (HNB subsystem) or a Wireless Local Area Network (WLAN).
  • HNB subsystem Home NodeB subsystem
  • WLAN Wireless Local Area Network
  • FIG. 1 is a schematic diagram of a user accessing an EPS network through a home base station system, where the home base station system can be an HNB subsystem or an evolved home base station system (Home evolved NodeB subsystem, referred to as a HeNB subsystem).
  • the HNB/HeNB is a small, low-power base station that is typically deployed in indoor locations such as homes and offices.
  • the HNB/HeNB typically accesses the EPS network through leased fixed line.
  • a security gateway (SeGW) is shielded in the core network.
  • the data interaction between the HNB/HeNB and the SeGW is encapsulated by IPSec.
  • the fixed network device cannot sense the HNB/HeNB and the mobile device. Data exchanged by the core network.
  • the HNB accesses the EPS network through the HNB GW and deploys the HNB subsystem.
  • the HNB GW is a mandatory network element.
  • the HNB GW and the Mobile Switching Center (MSC) have interfaces, so that the HNB subsystem supports the circuit switched domain.
  • the circuit switched domain (referred to as CS) service; the HeNB can be directly connected to the MME, or can be connected to the MME through the HeNB GW, that is, the HeNB GW is an optional network element, and the HeNB subsystem does not support the CS service.
  • HMS/HeMS HNB/HeNB Management System
  • HNB/HeNB Management System is used in the HNB/HeNB subsystem to manage HNB/HeNB related information.
  • FIG. 2 shows a schematic diagram of a user accessing an EPS network through a WLAN.
  • the UE User Equipment
  • accesses the RG Remote Gateway
  • WiFi AP Wireless Fidelity Access Point
  • AN Access Note, access node (for example, DSLAM).
  • the Digital Subscriber Line Access Multiplexer, a digital subscriber line access multiplexer is connected to the BRAS (Broadband Remote Access Server)/BNG (Broadband Network Gateway) and eventually accesses the EPS network.
  • BRAS Broadband Remote Access Server
  • BNG Broadband Network Gateway
  • the EPS network needs to access the P-GW through an EPDG (Evolved Packet Data Gateway), and an IPSec tunnel needs to be established between the UE and the ePDG.
  • EPDG Evolved Packet Data Gateway
  • an IPSec tunnel needs to be established between the UE and the ePDG.
  • the EPS network regards WLAN access as a trusted access mode, the WLAN can directly access the P-GW.
  • the fixed and mobile network resources used by the service need to be controlled, that is, the PCRF in Figure 1 and Figure 2 is used to control the mobile network resources, and the BPCF (Broadband Policy Control Function) is used to implement the fixed network resources. Control and establish an S9* interface between the PCRF and the BPCF to implement interworking of network resource control policies.
  • the PCRF After the PCRF receives an authorization request for the user to use the QoS (Quality of Service) resource for the service, the PCRF generates the authorization QoS for the user.
  • the above authorization QoS includes: QCI (QoS Class Identifier), MBR (Maximum Bit Rate), GBR (Guaranteed Bit Rate), and ARP (Allocation Retension Priority). Level) and other information.
  • the PCRF sends the authorized QoS to the BPCF in the form of a QoS rule, and requests the BPCF to perform admission control on the BPCF;
  • the BPCF When the BPCF receives the admission control request, it accepts the admission control.
  • the BPCF implementation admission control needs to be combined with the fixed network available QoS or the HNB/HeNB authorized QoS (the HNB/HeNB authorized QoS is the fixed network QoS for the HNB/HeNB that is contracted by the HNB/HeNB in advance with the fixed network operator or is in the HNB/ The fixed network QoS allocated by the BPCF and available to the HNB/HeNB during the process of the HeNB accessing the EPS.
  • the BPCF accepts the request and returns a successful response to the PCRF; or the authorized QoS cannot be satisfied even if the available QoS or the available HNB/HeNB grant QoS is available. If the ARP of the authorized QoS indicates that the resource preemption capability is higher than the resource preemption capability indicated by the ARP in the other authorized QoS, the authorized QoS can be accepted by preempting the resources already allocated to other users, and the admission success is returned to the PCRF. the response to.
  • the BPCF needs to return a response rejecting the admission to the PCRF;
  • the PCRF sends a policy indication to the policy enforcement network (for example, S-GW or P-GW) according to the admission control result returned by the BPCF. If the BPCF admission control succeeds, the PCRF will refuse to accept the BPCF, and the PCRF needs to send an indication of the authorization failure to the policy enforcement network element, or does not issue any policy;
  • the policy enforcement network for example, S-GW or P-GW
  • the policy enforcement network element performs QoS resource reservation according to the policy delivered by the PCRF.
  • the BPCF sends the foregoing authorized QoS to the fixed network policy execution network element (for example, BNG or BRAS), and the fixed network element performs resource reservation according to the received authorized QoS.
  • the fixed network policy execution network element for example, BNG or BRAS
  • the HNB/HeNB has a closed mode, an open mode, and a mixed mode.
  • the closed mode HNB/HeNB only accepts CSG (Closed Subscriber Group) user access
  • the open mode HNB/HeNB can accept any CSG attribute user access, and does not distinguish between CSG users and non-CSG users.
  • the HNB/HeNB is a hybrid mode, it can accept user access of any CSG attribute but needs to distinguish between CSG users and non-CSG users.
  • users can be divided into CSG users and non-CSG users.
  • the network should give priority to the CSG user's service experience. For example, when a CSG user conducts services, if the network resource usage on the HNB/HeNB is tight, the network resources allocated to the non-CSG users should be reduced or released at this time, and the QoS guarantee is preferentially provided for the CSG users to conduct services.
  • the policy control network element PCRF and BPCF
  • the result may be that if the non-CSG user preferentially conducts the service, the network allocates resources for it, when When a CSG user wants to conduct a service, the CSG user cannot be satisfied with the QoS requirements of the CSG user because the available network resources are available, and the CSG user is refused to perform the service, so that the QoS guarantee for the service of the CSG user is not satisfied.
  • the object of the present invention is to provide a method for implementing service admission control to overcome the above users.
  • the policy control entity does not formulate a control policy based on the user CSG information, and thus cannot provide QoS guarantee for the CSG user to perform service priority.
  • the present invention provides a method for implementing service admission control, which is applied to a Broadband Policy Control Function (BPCF), including:
  • BPCF Broadband Policy Control Function
  • the admission control request is admission controlled based on the user's Closed Subscriber Group (CSG) information.
  • the performing admission control of the admission control request according to the CSG information of the user includes: when the BPCF determines that the resource usage requirement indicated in the admission control request received by the BPCF by the currently available authorization resource cannot be all When satisfied, priority is given to the business carried out by CSG users.
  • the admission control request carries the CSG information of the user to be served; the preferentially accepting the service carried by the CSG user, including: according to the CSG information carried in the admission control request, and using the user
  • the CSG information of the same user base station (HNB) or other users of the evolved home base station (HeNB) makes a decision, and preferentially accepts the services carried out by the CSG user.
  • the method before receiving the admission control request, the method further includes:
  • the S9* session operation message includes: S9* session setup message or S9* session modification message.
  • the admission control request carries the user identifier of the user to be served; the preferentially accepting the service carried out by the CSG user includes:
  • HNB home base station
  • HeNB evolved home base station
  • the method further includes: after receiving the S9* session modification message sent by the PCRF and carrying the user identifier and the CSG information of the user, if it is determined that the user has been saved And the CSG information corresponding to the stored user identifier is replaced by the received CSG information, and the saved CSG information corresponding to the saved user identifier is replaced by the received CSG information.
  • the present invention also provides a method for implementing service admission control, which is applied to a policy and charging rule function for providing a policy control service for home base station access, including:
  • the admission control request is admission controlled based on the user's Closed Subscriber Group (CSG) information.
  • the receiving control of the admission control request according to the CSG information of the user includes: when the PCRFHNB determines that the resource usage requirement indicated in the admission control request received by the PCRFHNB cannot be fully satisfied by the current available authorization resource. Priority is given to the business carried out by CSG users.
  • the present invention also provides an implementation system for service admission control, which is applied to a Broadband Policy Control Function (BPCF), including:
  • BPCF Broadband Policy Control Function
  • a first device configured to: receive an admission control request sent by a policy and a charging rule function (PCRF) for a user to conduct a service;
  • PCRF charging rule function
  • a second device configured to: perform admission control of the admission control request based on a closed subscriber group (CSG) information of the user.
  • CSG closed subscriber group
  • the second device is configured to: preferentially accept the service carried out by the CSG user when it is determined that the currently available authorized resource cannot fully satisfy the resource usage requirements indicated in the admission control request received by the first device.
  • the admission control request carries the CSG information of the user to be served;
  • the second device is configured to: preferentially accept the service carried by the CSG user, including: according to the CSG information carried in the admission control request And making decisions with the CSG information of the other user using the same home base station (HNB) or evolved home base station (HeNB), and preferentially accepting services carried out by the CSG user.
  • HNB home base station
  • HeNB evolved home base station
  • the system further includes: a third device, configured to: receive an S9* session operation message sent by the PCRF, where the user carries the CSG information and the user identifier; and saves the CSG information of the user and the user Corresponding relationship of the identifier; wherein, the S9* session operation message includes: S9* session setup message or S9* session modification message.
  • a third device configured to: receive an S9* session operation message sent by the PCRF, where the user carries the CSG information and the user identifier; and saves the CSG information of the user and the user Corresponding relationship of the identifier; wherein, the S9* session operation message includes: S9* session setup message or S9* session modification message.
  • the admission control request carries the user identifier of the user to be served; the second device is configured to: preferentially accept the service carried out by the CSG user, including: according to the user identifier carried in the admission control request
  • the CSG information of the user is searched and combined with the CSG information of the other user of the same home base station (HNB) or the evolved home base station (HeNB), and the service carried out by the CSG user is preferentially accepted.
  • HNB home base station
  • HeNB evolved home base station
  • the system further includes: a fourth device, configured to: after receiving the S9* session modification message sent by the PCRF and carrying the user identifier and the CSG information of the user, if it is determined that the location has been saved And the CSG information corresponding to the user identifier is different from the received CSG information, and the saved CSG information corresponding to the saved user identifier is replaced by the received CSG information.
  • a fourth device configured to: after receiving the S9* session modification message sent by the PCRF and carrying the user identifier and the CSG information of the user, if it is determined that the location has been saved And the CSG information corresponding to the user identifier is different from the received CSG information, and the saved CSG information corresponding to the saved user identifier is replaced by the received CSG information.
  • an implementation system for service admission control is applied to a policy and charging rule function for providing a policy control service for a home base station access
  • the PCRFHNB includes:
  • a first device configured to: receive a receiving control request sent by a home base station gateway for a service performed by a user;
  • a second device configured to: perform admission control of the admission control request based on a closed subscriber group (CSG) information of the user.
  • CSG closed subscriber group
  • the second device is configured to: perform admission control on the admission control request according to the CSG information of the user, where: the determining, by the current available authorization resource, that the resource usage requirement indicated in the admission control request received by the PCRFHNB cannot be When all are satisfied, priority is given to the business carried out by CSG users.
  • the embodiment of the invention solves the problem of how to preferentially provide QoS guarantee for the CSG user to carry out the service when the fixed network resources used for the mobile access are tight.
  • FIG. 1 is a schematic structural diagram of a HeNB accessing an EPS in the prior art
  • FIG. 2 is a schematic structural diagram of a WLAN accessing an EPS in the prior art
  • FIG. 3 is a schematic diagram of selecting different PCRFs for different user equipments to access the network according to an embodiment of the present invention.
  • Network structure diagram is a schematic diagram of selecting different PCRFs for different user equipments to access the network according to an embodiment of the present invention.
  • FIG. 4 is a network structure diagram of a PCRFHNB according to an embodiment of the present invention.
  • Figure 5 is a flow chart showing an application example 1 of the present invention.
  • Figure 8 is a flow chart showing an application example 4 of the present invention. Preferred embodiment of the invention
  • the following two situations cannot implement the admission control of the user based on the CSG information, so that the QoS guarantee for the CSG user to perform the service cannot be achieved preferentially:
  • An S9* session is established when a user attaches to an EPC (Evolved Packet Core) network.
  • EPC Evolved Packet Core
  • 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 attachment phase is described as follows:
  • the core network element eg, P-GW
  • the existing DRA Diameter Route Agent, Diameter
  • PCRF1 is selected to serve UE1
  • PCRF2 is selected.
  • the PCRF3 is the UE's monthly service, and the PCRF1, PCRF2, and PCRF3 are based on the IPSec tunnel (the security tunnel established between the HNB/HeNB and the SeGW.
  • the HNB/HeNB accesses all users and the EPC network to interact. Data is encrypted using the same IPSec tunnel) data selection is the same BPCF, and establish S9* sessions respectively.
  • each PCRF can only perceive the CSG information provided by the UE that it serves, but cannot perceive the CSG information of all users in the HNB/HeNB.
  • PCRF1 only has CSG information of User 1, but does not perceive User 2 And user 3's CSG information).
  • the CSG information-based admission control is to be implemented, the CSG information of all users accessing the HNB/HeNB needs to be perceived. Therefore, in this case, the PCRF cannot implement admission control on the service performed by the user based on the CSG information, thereby failing to achieve priority. Provide QoS guarantee for services carried out by CSG users.
  • the BPCF only receives the authorized QoS information (ie, the QoS rule) from the PCRF, and the authorized QoS does not include the user-related information, that is, the BPCF cannot currently perceive the user information, and therefore cannot be based on the CSG information on the BPCF.
  • the user conducts the service for admission control, which makes it impossible to provide QoS guarantee for the services carried out by the CSG users.
  • the other case is: An S9* session is established when the HNB/HeNB is powered on.
  • the S9* session in this case is the HNB/HeNB level, and the S9* session is shared by all users under the HNB/HeNB access.
  • the policy control session establishment process in this case is described as follows:
  • the HNBGW selects the PCRFHNB and establishes an S15 session.
  • the PCRFHNB is used to provide a policy control service for the HNB/HeNB access, that is, the resource management is provided by the user accessing the HNB by using the HNB resource.
  • An S9* session is established between the PCRFHNB and the BPCF.
  • the PCRF serving the UE is found according to the DRA mechanism, and a policy control session is established between the core network element (for example, P-GW) and the PCRF.
  • the DRA mechanism it is possible to select different PCRFs for different user equipment access networks.
  • PCRF1 is selected to serve UE1
  • PCRF2 is The UE2 service
  • the PCRF3 serves the UE3, but the S9* session established in the HNB/HeNB power-on phase is shared by all UEs accessed through it.
  • each PCRF can only perceive the CSG information provided by the UE that it serves, but cannot sense the CSG information of all users in the HNB/HeNB.
  • PCRF1 only has CSG information of User 1, but does not perceive User 2 And the CSG information of the user 3), and if the CSG information-based admission control is to be implemented, the CSG information of all users accessing the HNB/HeNB needs to be perceived. Therefore, in this case, the PCRF cannot implement the admission control of the service performed by the user based on the CSG information, so that the QoS guarantee for the service carried out by the CSG user cannot be achieved preferentially.
  • the PCRFHNB selected in the HNB/HeNB power-on phase will serve all users accessing through the HNB/HeNB
  • the BPCF selected in the S9* session establishment phase will also serve all users accessing through the HNB/HeNB.
  • the CSG information of all the access users in the HNB/HeNB cannot be obtained on the PCRFHNB and the BPCF. Therefore, the user cannot perform admission control on the PCRFHNB or the BPCF based on the CSG information, thereby failing to implement Priority is given to QoS guarantees for services carried out by CSG users.
  • a method for implementing business admission control, applied to BPCF includes:
  • the admission control request is subjected to admission control according to the CSG information of the user.
  • the admission control of the admission control request according to the CSG information of the user includes: if the BPCF determines that the current available authorization resource fails to use the resource usage requirement indicated in the admission control request received by the BPCF. If it is satisfied, the CSG information is preferentially accepted as the service carried out by the user of the CSG user, that is, the service carried out by the CSG user is preferentially accepted.
  • the foregoing admission control request carries CSG information of a user to be served
  • the foregoing preferentially accepting the CSG information as the service performed by the user of the CSG user includes: performing, according to the CSG information carried in the admission control request, and the CSG information of other users using the same HNB or HeNB, the priority is given.
  • the CSG information carried in the admission control request is accepted as a service carried out by a user of the CSG user.
  • the method before receiving the foregoing admission control request, the method further includes:
  • the S9* session operation message includes: an S9* session establishment message or an S9* session modification message.
  • the admission control request may further carry a service to be carried out.
  • the CSG information is preferentially received by the user of the CSG user, and the method includes: searching for the corresponding CSG information according to the user identifier carried in the admission control request, and then combining the CSG of the other user who uses the same HNB or HeNB with the user.
  • the information is used for decision making, and the CSG information found is preferentially accepted for the services carried out by the users of the CSG users.
  • the method further includes: after receiving the S9* session modification message sent by the PCRF and carrying the user identifier and the user CSG information, if the user identifier has been saved on the BPCF, but the saved on the BPCF The CSG information corresponding to the user identifier is different from the received CSG information, and the saved CSG information is replaced by the received CSG information.
  • BPCF Broadband Policy Control Function
  • a first device configured to receive an admission control request sent by a policy and a charging rule function (PCRF) for a user to conduct a service;
  • PCRF charging rule function
  • a second device configured to perform admission control on the admission control request according to a closed subscriber group (CSG) information of the user.
  • CSG closed subscriber group
  • the second device is configured to perform admission control on the admission control request according to the CSG information of the user, where the second device is configured to: when determining, that the currently available authorized resource is received by the first device, When the resource usage requirements indicated in the admission control request cannot be fully met, the services carried out by the CSG users are preferentially accepted.
  • the admission control request carries the CSG information of the user to be served;
  • the second device is used to preferentially accept the service carried out by the CSG user, and specifically includes:
  • the second device is configured to perform a decision according to the CSG information carried in the admission control request and CSG information of another user that uses the same home base station (HNB) or an evolved home base station (HeNB) Accept the business carried out by CSG users.
  • HNB home base station
  • HeNB evolved home base station
  • the system further comprises:
  • a third device configured to receive an S9* session operation message sent by the PCRF, where the CSG information and the user identifier of the user are carried; And is further configured to save a correspondence between the CSG information of the user and the user identifier;
  • the S9* session operation message includes: an S9* session establishment message or an S9* session modification message.
  • the admission control request carries the user identifier of the user to be served;
  • the second device is configured to preferentially accept the service carried out by the CSG user, and specifically includes:
  • the second device is configured to search for CSG information of the user according to the user identifier carried in the admission control request, and combine with other users of the same home base station (HNB) or evolved home base station (HeNB) with the user.
  • the CSG information is used for decision making, and the business carried out by CSG users is preferentially accepted.
  • the system further comprises:
  • a fourth device configured to: after receiving the S9* session modification message that is sent by the PCRF and carrying the user identifier and the CSG information of the user, if it is determined that the user identifier has been saved, and the saved user The CSG information corresponding to the identifier is different from the received CSG information, and the CSG information corresponding to the saved user identifier is replaced by the received CSG information.
  • Another method for implementing service admission control is applied to a policy and charging rule function for providing a policy control service for a home base station (including an HNB or a HeNB).
  • the PCRFHNB includes:
  • the admission control request is subjected to admission control based on the user's CSG information.
  • the admission control of the admission control request according to the CSG information of the user includes: when the PCRFHNB determines that the resource usage requirements indicated in the admission control request received by the PCRFHNB cannot be fully satisfied, the CSG user is preferentially accepted. Business.
  • an implementation system for service admission control is applied to a policy and charging rule function for providing a policy control service for a home base station access
  • the PCRFHNB includes:
  • a first device configured to receive an admission control request sent by a home base station gateway for a service performed by a user
  • a second device configured to request the admission control according to a closed subscriber group (CSG) information of the user Request for admission control.
  • CSG closed subscriber group
  • the second device is configured to perform admission control on the admission control request according to the CSG information of the user, and the method includes: determining, by the second device, the admission control received by the currently available authorized resource to the PCRFHNB.
  • the services carried out by the CSG users are preferentially accepted.
  • UE-A and UE-B access the EPS network through the same HNB/HeNB, in which 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 conduct services at the same time, and the network needs to combine the user's CSG information to conduct admission control for the service.
  • the HNB/HeNB Before the user conducts the service, the HNB/HeNB needs to be attached to the EPS network.
  • the user needs to use the IPSec tunnel information (that is, the IPSec tunnel information established between the HNB/HeNB and the Se-GW, including the HNB/HeNB.
  • the local IP address) and other information (such as user ID, user's CSG information, etc.) are sent to PCEF/BBERF.
  • the user A and the user B are connected to the EPS network through the HNB/HeNB.
  • the user A and the user B need to separately send the user ID, the CSG information, and the IPSec tunnel information to the PCEF. /BBERF.
  • the DRA selects the PCRF of the service for each user access based on the user ID.
  • the DRA selects PCRF-A to serve UE-A and PCRF-B to serve UE-B.
  • the PCEF/BBERF establishes a policy control session with the PCRF-A and the PCRF-B, and sends the identification information of the user A, the IPSec tunnel information, and the CSG information of the user A to the PCRF-A, and the identification information of the user B,
  • the IPSec tunnel information and the CSG information of the user B are sent to the PCRF-B.
  • the PCRF-A and the PCRF-B discover the BPCF according to the HNB/HeNB local IP address in the IPSec tunnel information received in the UE-A and UE-B attach procedures, respectively, and establish an S9* session. Since UE-A and UE-B access the EPS using the same HNB/HeNB, PCRF-A and PCRF-B select the same BPCF according to the IPSec tunnel information.
  • the process by which BPCF provides admission control is shown in Figure 5, including: 501.
  • the PCRF-A and the PCRF-B respectively receive an authorization request for the service performed by the UE-A and the UE-B. For example, if the user initiates the service, the PCRF receives the resource authorization request from the PCEF/BBERF; if it is the network initiated service, the PCRF receives the service authorization request from the AF;
  • the PCRF-A performs authorization for the UE-A to generate the QoS-A (indicated by the QoS rule -A), and the PCRF-B generates the authorization QoS-B for the UE-B (indicated by the QoS rule -B);
  • the PCRF-A initiates an admission control request to the BPCF, where the QoS rule-A and the CSG information of the user A are carried, and the PCRF-B initiates an admission control request to the BPCF, where the QoS rule-B is carried. And user B's CSG information.
  • the BPCF performs admission control on the QoS rule-A and the QoS rule-B according to the CSG information of the user A and the user B, respectively, because the authorized QoS of the HNB/HeNB cannot meet the requirements of the UE-A and the UE-B simultaneously performing services.
  • User A is a CSG user
  • user B is a non-CSG user. Therefore, the BPCF accepts the QoS rule-A, that is, accepts the UE-A to perform the above-mentioned service, and rejects the QoS rule-B, that is, refuses to accept the UE-B to conduct the service;
  • the BPCF returns an admission control result to the PCRF.
  • the BPCF returns a response accepted by the admission control to the PCRF-A; the BPCF returns a response to the admission control rejection to the PCRF-B;
  • the PCRF determines whether to issue a policy.
  • the QoS rule-A After the PCRF-A receives the response message accepted by the admission control, the QoS rule-A is sent to the BBERF, or the PCC rule-A corresponding to the QoS rule-A is sent to the PCEF; when the PCRF-B receives the admission control rejection After the response message, the QoS rule-B is released. If the service is initiated by the UE-B, the PCRF-B returns a response to the authorization failure to the PCEF/BBERF. If the service is initiated by the network, the PCRF-B returns the authorization to the AF. A failed response.
  • the policy is executed, and the bearer resource reservation between the UE-A and the PCEF/BBERF is completed according to the authorized QoS-A.
  • Application Example 2 It is assumed 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 At the same time, the network needs to combine the CSG information of User A and User B to conduct admission control for its business.
  • the UE-A and the UE-B send the corresponding CSG information and user identification information of the user A and the user B to the BPCF, and the BPCF saves the related information.
  • BPCF's process of implementing acceptance control for users' business implementation includes:
  • the UE-A is attached to the EPS network by using the HNB/HeNB.
  • the PCEF/BBERF receives the attach request sent by the UE-A, where the attach request includes the identifier information of the user A and the IPSec tunnel information, and the DRA finds the PCRF-A, PCEF/BBERF, and PCRF-A establishment policies according to the user identifier. Control the session and initiate an authorization request to PCRF-A.
  • PCRF-A completes the policy decision
  • the PCRF-A discovers the BPCF according to the HNB/HeNB IP address in the IPSec tunnel information, and establishes an S9* session, and then sends the identification information of the user A and the CSG information to the BPCF for storage.
  • the PCRF-A sends a policy to the PCEF/BBERF, and sends an event trigger to the PCEF/BBERF to subscribe to the CSG information change event of the user A. If the CSG information of the user A changes, it is reported to the PCRF. -A;
  • the attach process is completed between UE-A and PCEF/BBERF.
  • the attachment process of UE-B refers to the attachment process of UE-A, and details are not described herein.
  • the PCEF/BBERF detects that the CSG information of the user A changes.
  • the PCEF/BBERF performs the event reporting, notifying the PCRF-A that the CSG information of the user A has changed, and reporting the latest user A's CSG information to the PCRF-A;
  • the PCRF-A initiates an S9* session modification message to the BPCF, and sends the identification information of the user A and the latest CSG information to the BPCF, and the BPCF updates accordingly.
  • the PCRF-A and the PCRF-B respectively receive the authorization request for the service performed by the UE-A and the UE-B. For example: If it is a user-initiated service, the PCRF receives a resource authorization request from the PCEF/BBERF; if it is a network-initiated service, the PCRF receives a service authorization request from the AF. 611. For the received authorization request, PCRF-A and PCRF-B respectively make policy decisions.
  • the PCRF-A generates the authorization QoS-A for the UE-A (indicated by the QoS rule-A), and the PCRF-B generates the authorization QoS-B for the UE-B (indicated by the QoS rule-B);
  • the PCRF-A initiates an admission control request to the BPCF, where the QoS rule-A and the identification information of the user A are carried, and the PCRF-B initiates an admission control request to the BPCF, where the QoS rule-B is carried. And the identification information of user B.
  • the BPCF searches for the CSG information of the user A and the user B according to the received identification information of the user A and the identification information of the user B, and then respectively correspondingly the QoS rule-A and the QoS rule according to the CSG information of the two. B performs admission control.
  • the BPCF accepts the QoS rule-A and rejects the QoS rule.
  • -B that is, accepting UE-A to conduct business, and refusing to accept UE-B to conduct business.
  • the BPCF returns an admission control result to the PCRF, that is: the BPCF returns a response accepted by the admission control to the PCRF-A, and returns a response to the admission control rejection to the PCRF-B.
  • the PCRF determines whether to issue a policy.
  • the QoS rule-A After the PCRF-A receives the response message accepted by the admission control, the QoS rule-A is sent to the BBERF, or the PCC rule-A corresponding to the QoS rule-A is sent to the PCEF; when the PCRF-B receives the admission control rejection After the response message, the QoS rule-B is released. If the service is initiated by the UE-B, the PCRF-B returns a response to the authorization failure to the PCEF/BBERF. If the service is initiated by the network, the PCRF-B returns the authorization to the AF. A failed response.
  • the policy is executed, and the bearer resource reservation between the UE-A and the PCEF/BBERF is completed according to the authorized QoS-A.
  • This example is for the user to conduct services after attaching to the EPS system through HNB access, and implement admission control.
  • the HNB GW if a user accesses the EPS through the HNB, the HNB GW must be deployed.
  • the HNB GW discovers the PCRFHNB serving the HNB access and establishes an S15 session, and sends the IPSec tunnel information to the PCRFHNB, the PCRFHNB root.
  • the BPCF is discovered based on the HNB IP address in the IPSec tunnel information, and then an S9* session is established with the BPCF.
  • the HNB GW When the user attaches to the EPS network through the HNB, the HNB GW sends the CSG information and the identification information of the user to the PCRFHNB, and the PCRFHNB sends the CSG information and the identification information of the user to the BPCF for saving in the S9* session.
  • the HNB is powered on, and initiates registration with the HNB GW.
  • the HNB GW and the PCRFHNB establish an S15 session, and send the IPSec tunnel information to the PCRFHNB.
  • the PCRF detects the BPCF according to the IPSec tunnel information, and establishes an S9* session. 704.
  • the UE-A initiates the process of attaching to the EPS by using the HNB.
  • the HNB GW initiates an S15 session modification, and sends the identifier information of the user A and the CSG information of the user A to the PCRFHNB.
  • the PCRFHNB sends the received identification information of the user A and the CSG information of the user A to the BPCF for storage.
  • the PCEF/BBERF After receiving the attach request initiated by the UE-A, the PCEF/BBERF discovers the PCRF-A according to the identification information of the user A, and initiates an authorization request.
  • the PCRF-A performs a policy decision on the UE-A request.
  • PCRF-A issues a policy to PCEF/BBERF
  • the UE-B is attached to the EPS network by using the HNB according to the same process as the UE-A.
  • the PCRF-A and the PCRF-B respectively receive an authorization request for the service performed by the UE-A and the UE-B. For example: If it is the service initiated by the user A/B, the PCRF-A/PCRF-B receives the resource authorization request from the PCEF/BBERF; if it is the network initiated service, the PCRF-A/PCRF-B receives Is the business authorization request from AF;
  • PCRF-A and PCRF-B respectively make policy decisions.
  • the PCRF-A generates an authorization QoS-A for the UE-A (indicated by the QoS rule-A), and the PCRF-B generates the authorization QoS-B for the UE-B (indicated by the QoS rule-B); 713.
  • the PCRF-A delivers the authorization for the UE-A to the PCEF/BBERF.
  • the PCRF-B sends the authorization for the UE-B to the PCEF/BBERF.
  • the PCEF/BBERF initiates a corresponding bearer operation according to the policy delivered by the PCRF-A/PCEF-B, and reserves corresponding resources.
  • the HNB GW After receiving the bearer operation request, the HNB GW initiates an admission control request for the UE-A and an admission control request for the UE-B to the PCRFHNB, where the admission control request for the UE-A carries: QoS rule-A The identification information of the user A and the CSG information of the user A, etc.; the admission control request for the UE-B carries: the QoS rule-B, the identification information of the user B, and the CSG information of the user B;
  • the PCRFHNB performs admission control on the foregoing admission control request for the UE-A and the admission control request for the UE-B according to the CSG information of the user accessing the HNB. Since the HNB authorized QoS cannot meet the QoS requirements of the UE-A and the UE-B, and the UE-A is the CSG user and the UE-B is the non-CSG user, the PCRF accepts the UE-A to perform the service and rejects the UE- B conduct business.
  • the PCRFHNB sends the QoS rule information corresponding to the UE-A and the UE-B and the CSG information of the user A and the user B to the BPCF.
  • the UE-A and the UE-B perform QoS resources for admission control, and send the result to the PCRFHNB.
  • the PCRFHNB sends the result of the admission control (ie, accepting the UE-A to conduct the service and rejecting the UE-B to conduct the service) to the HNB GW;
  • the HNB GW performs a policy according to the result of the admission control returned by the PCRFHNB, and initiates a bearer resource reservation process to the UE-A.
  • the GW initiates release of the bearer resource corresponding to the UE-B to the PCEF/BBERF.
  • This example describes the implementation of the service implementation admission control for UEs under different accesses sharing the same fixed network backhaul.
  • User A accesses EPS through HeNB, and UE-User A is CSG user;
  • User B accesses EPS through WLAN.
  • UE-A and UE-B conduct business simultaneously
  • the admission control is implemented by BPCF. It should be noted that the user accessing through the WLAN does not have the distinction between the CSG user and the non-CSG user.
  • the UE-A is attached to the EPS network through the HeNB.
  • the PCEF discovers the PCRF-A according to the identification information of the user A, and sends the identification information of the user A, the CSG information of the user A, and the IPSec tunnel information to the PCRF-A.
  • the PCRF-A discovers the BPCF based on the IPSec tunnel information, establishes an S9* session, and sends the identification information of the user A and the CSG information of the user A to the BPCF for storage.
  • the UE-B is attached to the EPS network through the WLAN. It is assumed that the fixed network does not support the 3GPP (The 3rd Generation Partnership Project) authentication mode, and the fixed network does not sense the UE-B access, UE-B.
  • the PCEF sends the PCRF-B to the PCRF-B according to the identification information of the user B, and sends the identification information of the user B, the CSG information of the user B, and the IPSec tunnel information to the PCRF-B.
  • the PCRF-B discovers the BPCF based on the IPSec tunnel information, establishes an S9* session, and sends the identification information of the user B to the BPCF for storage. Since UE-B is accessed via WLAN, there is no CSG information. Since the UE-A and the UE-B access the EPS network using the same fixed-line backhaul, the BPF and the PCRF-B discovered by the PCRF-A according to the IPSec tunnel information used by the UE-A are found according to the IPSec tunnel information used by the UE-B. BPCF is the same.
  • the UE-B initiates attachment to the EPS network through the WLAN.
  • the PCEF finds according to the identification information of the user B.
  • the PCRF-B sends an authorization request to the PCRF-B, where the request carries: the identification information of the user B and the local IP address of the UE-B;
  • the PCRF-B performs a policy decision on the UE-B attach request.
  • the PCRF-B discovers the BPCF according to the local IP address of the UE-B, and establishes an S9* session, and sends the identification information of the user B to the BPCF for saving.
  • the PCRF-B returns a policy to the PCEF.
  • the PCRF-A and the PCRF-B respectively receive an authorization request for the service performed by the UE-A and the UE-B. For example, if it is a user-initiated service, the PCRF receives a resource authorization request from the PCEF; if it is a network-initiated service, the PCRF receives a service authorization request from the AF.
  • PCRF-A and PCRF-B respectively make policy decisions.
  • the PCRF-A performs authorization for the UE-A to generate the QoS-A (indicated by the QoS rule -A), and the PCRF-B generates the authorization QoS-B for the UE-B (indicated by the QoS rule -B);
  • the PCRF-A initiates an admission control request to the BPCF, where the QoS rule-A and the identification information of the user A are carried, and the PCRF-B initiates an admission control request to the BPCF, where the QoS rule-B is carried. And the identification information of the user B;
  • the BPCF obtains the CSG information of the user A and the user B according to the received identification information of the user A and the identification information of the user B.
  • the BPCF knows that user A is a CSG user, and user B does not have CSG information. Therefore, when admission control is performed on QoS rule-A and QoS rule-B, the authorized QoS of HeNB cannot satisfy UE-A and UE-B at the same time. The service needs, and the user A is the CSG user, and the QoS guarantee should be given priority. Therefore, the BPCF accepts the QoS rule-A and rejects the QoS rule-B, that is, accepts the UE-A to carry out the service, and refuses to accept the UE-B to conduct the service.
  • the BPCF returns an admission control result to the PCRF, that is: the BPCF returns a response accepted by the admission control to the PCRF-A, and returns a response to the admission control rejection to the PCRF-B.
  • the PCRF determines whether to issue a policy.
  • the PCC rule -A After the PCRF-A receives the response message accepted by the admission control, the PCC rule -A is sent to the PCEF. After the PCRF-B receives the response message rejecting the admission control, the PCC rule-B is released; if it is the service initiated by the UE-B, the PCRF-B returns a response to the authorization failure to the PCEF, and if it is a service initiated by the network, The PCRF-B returns a response to the authorization failure to the AF.
  • the PCEF executes the policy, and completes the bearer resource reservation between the UE-A and the PCEF according to the authorized QoS-A.
  • the above embodiments of the present invention solve the problem of how to implement service admission management and resource management, so that the total QoS requirement does not exceed the QoS that the fixed base line accessed by the home base station can provide.
  • the embodiment of the invention solves the problem of how to preferentially provide QoS guarantee for the CSG user to carry out the service when the fixed network resources used for the mobile access are tight.

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Abstract

一种业务接纳控制的实现方法,应用于宽带策略控制功能(BPCF)中,包括:接收策略和计费规则功能(PCRF)发来的针对用户开展业务的接纳控制请求;根据用户的闭合用户组(CSG)信息对所述接纳控制请求进行接纳控制。本发明还公开了相应系统。本发明实施例解决了在授权给移动接入使用的固网资源发生紧张的情况下,如何优先为CSG用户开展业务提供QoS保证的问题。

Description

一种业务接纳控制的实现方法及系统
技术领域
本发明涉及无线通信领域, 尤其涉及一种业务接纳控制的实现方法及系 统。 背景技术
第三代合作伙伴计划 ( 3rd Generation Partnership Project, 简称为 3GPP ) 开发的演进分组系统( Evolved Packet System , 简称为 EPS ) 由移动管理单元 ( Mobility Management Entity, 简称为 MME )、 月良务网关( Serving Gateway, 简称为 S-GW ) 、 分组数据网络网关 ( Packet Data Network Gateway , 简称为 P-GW ) 、 归属用户服务器(Home Subscriber Server, 简称为 HSS )等网元组 成, 如图 1所示。
MME负责移动性管理、非接入层信令的处理和用户移动管理上下文的管 理等控制面的相关工作; S-GW在用户接入和 P-GW之间转发数据, 并且负 责对寻呼等待数据进行緩存; P-GW则是 EPS与分组数据网络(Packet Data Network, 简称为 PDN )网络的边界网关, 负责 PDN的接入及在 EPS与 PDN 间转发数据等功能。
如果 EPS系统支持策略和计费控制( Policy and Charging Control, 简称为 PCC ) , 则策略和计费规则功能(Policy and Charging Rules Function, 简称为 PCRF ) 进行策略和计费规则的制定, 它通过接口 Rx 和运营商网络协议 ( Internet Protocol , 简称为 IP )业务网络中的应用功能( Application Function , 简称为 AF )相连, 获取业务信息, 用于生成 PCC策略的业务信息。 当 S-GW 与 P-GW之间的 S5接口釆用 GTP ( GPRS Tunneling Protocol, 通用分组无线 服务隧道协议)协议时, P-GW 中驻留了策略和计费执行功能 (Policy and Charging Enforcement Function, 简称为 PCEF ) 。 PCRF与 P-GW间通过 Gx 接口交换信息, 负责发起承载建立、 修改和释放, 保证业务数据传输的服务 质量(Quality of Service, 简称为 QoS ) , 并进行计费控制。 当 S-GW与 P-GW 的 S5接口釆用代理移动 IP ( Proxy Mobile IP, 简称为 PMIP )时, S-GW中驻 留承载绑定和事件报告功能( Bearer Binding and Event Report Function, 简称 为 BBERF ) , 并且 S-GW与 PCRF之间通过 Gxc接口交换信息, 由 BBERF 负责发起承载建立、 修改和释放, 保证业务数据的服务质量, 由 PCEF进行 计费控制。
用户可以通过演进的通用地面无线接入网 ( Evolved Universal Terrestrial
Radio Access Network, 简称为 E-UTRAN )接入到 EPS网络。
此外, 用户还可以通过家庭基站系统( Home NodeB subsystem , 简称为 HNB 子系统) 或者无线局域网络(Wireless Local Area Network, 简称为 WLAN )接入 EPS网络。
图 1给出了用户通过家庭基站系统接入到 EPS网络的示意图, 其中家庭 基站系统可以是 HNB 子系统或者是演进的家庭基站系统 ( Home evolved NodeB subsystem, 简称为 HeNB子系统)。 HNB/HeNB是一种小型、 低功率 基站, 通常部署在家庭及办公室等室内场所。 HNB/HeNB通常通过租用的固 网线路接入 EPS网络。 为了保证接入安全, 核心网中引入安全网关(Security Gateway, 简称为 SeGW )进行屏蔽, HNB/HeNB与 SeGW之间的数据交互 将釆用 IPSec进行封装, 固网设备无法感知 HNB/HeNB和移动核心网络交互 的数据。 HNB通过 HNB GW接入 EPS网络, 部署 HNB子系统, HNB GW 是必选网元, 此外 HNB GW和移动交换中心( Mobile Switching Center, 简称 为 MSC )存在接口, 使得 HNB 子系统支持电路交换域(Circuit Switched Domain, 简称为 CS )业务; HeNB可以直接连接到 MME, 也可以通过 HeNB GW连接到 MME, 即 HeNB GW为可选网元, HeNB子系统不支持 CS业务。 HNB/HeNB 子系统中存在 HMS/HeMS ( HNB/HeNB Management System, HNB/HeNB管理系统)用于管理 HNB/HeNB相关的信息。
图 2给出了用户通过 WLAN接入 EPS网络的示意图。 UE( User Equipment, 用户设备 )通过 WiFi AP ( Wireless Fidelity Access Point , 无线相容性认证接 入点)接入 RG ( Residential Gateway, 家庭网关) , 通过 AN ( Access Note, 接入节点 (例如: DSLAM Digital Subscriber Line Access Multiplexer, 数字用 户线接入复用设备) )接入 BRAS ( Broadband Remote Access Server 宽带接 入服务器 ) /BNG ( Broadband Network Gateway ) , 最终接入到 EPS网络。 其 中, 如果 EPS网络将 WLAN接入视为不可信任的接入, 则 WLAN需要通过 ePDG ( Evolved Packet Data Gateway, 演进的分组数据网关)接入到 P-GW, UE和 ePDG之间需要建立 IPSec隧道, 以保证数据交互的安全性; 如果 EPS 网络将 WLAN接入视为可信的接入方式, 则 WLAN可以直接接入 P-GW。
无论用户通过上述哪种方式接入到 EPS网络, 或者用户在这两种接入之 间发生切换的时候, 为了保证用户的业务体验, 以及控制网络资源的使用, 在用户开展业务的过程中,需要对业务使用的固定和移动网络资源进行控制, 即使用图 1 和图 2 中的 PCRF 实现对移动网络资源的管控, 使用 BPCF ( Broadband Policy Control Function, 宽带策略控制功能) 实现对固网资源的 管控, 同时在 PCRF和 BPCF之间建立 S9*接口, 以实现网络资源控制策略的 互通。
现有技术中针对用户开展业务实施策略控制的方式实现如下:
( 1 ) 当 PCRF收到针对该用户开展该业务使用 QoS ( Quality of Service, 服务质量) 资源的授权请求后, 为该用户开展该业务产生授权 QoS。 上述授 权 QoS中包含了: QCI( QoS Class Identifier, Qos类别标识)、 MBR( Maximum Bit Rate, 最大比特率) 、 GBR ( Guaranteed Bit Rate, 保证比特率)及 ARP ( Allocation Retension Priority, 分配与保持优先级 )等信息。 PCRF将所述授 权 QoS以 QoS规则的形式发送给 BPCF, 请求 BPCF对其进行接纳控制;
( 2 ) 当 BPCF收到该接纳控制请求后, 对其进行接纳控制。 BPCF实施 接纳控制需要结合固网可用 QoS或者 HNB/HeNB授权 QoS (该 HNB/HeNB 授权 QoS是由 HNB/HeNB事先与固网运营商签约的供 HNB/HeNB使用的固 网 QoS或者是在 HNB/HeNB上电接入 EPS的过程中由 BPCF分配的、 可供 HNB/HeNB使用的固网 QoS ) 。 如果可用固网 QoS或者可用 HNB/HeNB授 权 QoS能够满足上述授权 QoS, 则 BPCF接纳该请求, 向 PCRF返回接纳成 功的响应; 或者即使可用固网 QoS或者可用 HNB/HeNB授权 QoS不能满足 上述授权 QoS,但是该授权 QoS中包含的 ARP指示资源抢占能力高于其他授 权 QoS中的 ARP指示的资源抢占能力,则可以通过抢占已经分配给其他用户 的资源而接纳该授权 QoS, 并向 PCRF返回接纳成功的响应。 如果即使通过 抢占的方式也无法获得资源(即该授权 QoS中包含的 ARP指示的资源抢占能 力低于其他授权 QoS中 ARP指示的资源抢占能力) , 则 BPCF需要向 PCRF 返回拒绝接纳的响应;
( 3 ) PCRF根据 BPCF返回的接纳控制结果, 向策略执行网络(例如 S-GW或者 P-GW )下发策略指示。 如果是 BPCF接纳控制成功, 则 PCRF将 果 BPCF拒绝接纳, 则 PCRF需要向策略执行网元下发授权失败的指示, 或 者不下发任何策略;
( 4 )如果 BPCF接纳上述用户开展的业务, 则策略执行网元根据 PCRF 下发的策略进行 QoS资源预留。 可选的, BPCF将上述授权 QoS下发给固网 策略执行网元(例如 BNG或者 BRAS ), 固网网元根据接收到的该授权 QoS 进行资源预留。
针对图 1所示的场景, HNB/HeNB存在闭合模式、 开放模式和混合模式 之分。 闭合模式的 HNB/HeNB则只接纳 CSG ( Closed Subscriber Group, 闭合 用户组)用户接入, 开放模式的 HNB/HeNB则可以接纳任何 CSG属性的用 户接入,并不区分 CSG用户和非 CSG用户,而如果是混合模式的 HNB/HeNB 则可以接纳任何 CSG属性的用户接入但是需要区分 CSG用户和非 CSG用户。
同样, 用户也可划分为 CSG用户和非 CSG用户。 如果用户接入到具备 混合模式的 HNB/HeNB, 并开展业务的时候, 网络应该优先保证 CSG用户的 业务体验。 例如, 当一个 CSG用户开展业务的时候, 如果 HNB/HeNB上的 网络资源使用发生紧张,此时应该降低或者释放分配给非 CSG用户的网络资 源, 而优先为 CSG用户开展业务提供 QoS保证。但是按照现有技术, 策略控 制网元(PCRF和 BPCF )在实施策略控制时并没有考虑 CSG信息, 这样可 能导致的结果是如果非 CSG用户优先开展业务使用了网络为其分配的资源, 当后续 CSG用户要开展业务的时候, 会因为可用网络资源无法满足该 CSG 用户开展业务对 QoS的要求,而拒绝该 CSG用户开展该业务,这样就无法满 足优先为 CSG用户开展业务提供 QoS保证的需求。 发明内容
本发明的目的在于提供一种业务接纳控制的实现方法, 以克服上述用户 通过 HNB/HeNB接入 EPS网络开展业务的时候,由于策略控制实体没有根据 用户 CSG信息制定控制策略, 从而无法为 CSG用户开展业务优先提供 QoS 保证的问题。 为解决上述问题, 本发明提供了一种业务接纳控制的实现方法, 应用于 宽带策略控制功能(BPCF ) 中, 包括:
接收策略和计费规则功能(PCRF )发来的针对用户开展业务的接纳控制 请求;
根据用户的闭合用户组 ( CSG )信息对所述接纳控制请求进行接纳控制。 优选地, 所述根据用户的 CSG信息对所述接纳控制请求进行接纳控制, 包括: 当所述 BPCF判断出当前可用授权资源对所述 BPCF接收到的接纳控 制请求中指示的资源使用要求无法全部满足时,优先接纳 CSG用户开展的业 务。
优选地, 所述接纳控制请求中携带有待开展业务的用户的 CSG信息; 所述优先接纳 CSG用户开展的业务, 包括: 根据所述接纳控制请求中携 带的所述 CSG信息以及和所述用户使用相同家庭基站(HNB )或者演进的家 庭基站( HeNB )的其他用户的 CSG信息进行决策, 优先接纳 CSG用户开展 的业务。
优选地, 在接收所述接纳控制请求之前, 所述方法还包括:
接收所述 PCRF发来的 S9*会话操作消息, 其中携带用户的 CSG信息及 用户标识; 保存所述用户的 CSG信息及所述用户标识的对应关系; 其中, 所 述 S9*会话操作消息包括: S9*会话建立消息或者 S9*会话修改消息。
优选地, 所述接纳控制请求中携带有待开展业务的用户的用户标识; 所述优先接纳 CSG用户开展的业务, 包括:
根据所述接纳控制请求中携带的所述用户标识查找该用户的 CSG信息 并结合和所述用户使用相同家庭基站( HNB )或者演进的家庭基站( HeNB ) 的其他用户的 CSG信息进行决策, 优先接纳 CSG用户开展的业务。
优选地, 所述方法还包括: 在接收到所述 PCRF发来的携带有用户标识 及该用户的 CSG信息的 S9*会话修改消息后, 如判断出已经保存了所述用户 标识, 且保存的所述用户标识对应的 CSG信息与接收到的所述 CSG信息不 同, 则用所述接收到的 CSG信息替换所述保存的所述用户标识对应的 CSG 信息。
此外, 本发明还提供了一种业务接纳控制的实现方法, 应用于为家庭基 站接入提供策略控制服务的策略和计费规则功能 PCRFHNB中, 包括:
接收家庭基站网关发来的针对用户开展业务的接纳控制请求;
根据用户的闭合用户组 ( CSG )信息对所述接纳控制请求进行接纳控制。 优选地, 所述根据用户的 CSG信息对所述接纳控制请求进行接纳控制, 包括: 当所述 PCRFHNB判断出当前可用授权资源对 PCRFHNB接收到的接纳控 制请求中指示的资源使用要求无法全部满足时,优先接纳 CSG用户开展的业 务。
相应地, 本发明还提供了一种业务接纳控制的实现系统, 应用于宽带策 略控制功能(BPCF ) 中, 包括:
第一装置, 其设置为: 接收策略和计费规则功能(PCRF )发来的针对用 户开展业务的接纳控制请求;
第二装置, 其设置为: 根据用户的闭合用户组(CSG )信息对所述接纳 控制请求进行接纳控制。
优选地, 所述第二装置是设置为: 当判断出当前可用授权资源对所述第 一装置接收到的接纳控制请求中指示的资源使用要求无法全部满足时, 优先 接纳 CSG用户开展的业务。
优选地, 所述接纳控制请求中携带有待开展业务的用户的 CSG信息; 所述第二装置设置为: 优先接纳 CSG用户开展的业务, 包括: 根据所述 接纳控制请求中携带的所述 CSG信息以及和所述用户使用相同家庭基站 ( HNB )或者演进的家庭基站(HeNB ) 的其他用户的 CSG信息进行决策, 优先接纳 CSG用户开展的业务。
优选地, 所述系统还包括: 第三装置, 设置为: 接收所述 PCRF发来的 S9*会话操作消息, 其中携带用户的 CSG信息及用户标识; 保存所述用户的 CSG信息及所述用户标识的对应关系; 其中, 所述 S9*会话操作消息包括: S9*会话建立消息或者 S9*会话修改消息。
优选地, 所述接纳控制请求中携带有待开展业务的用户的用户标识; 所述第二装置设置为: 优先接纳 CSG用户开展的业务, 包括: 根据所述 接纳控制请求中携带的所述用户标识查找该用户的 CSG信息并结合和所述用 户使用相同家庭基站 ( HNB )或者演进的家庭基站 ( HeNB ) 的其他用户的 CSG信息进行决策, 优先接纳 CSG用户开展的业务。
优选地, 所述系统还包括: 第四装置, 设置为: 在接收到所述 PCRF发 来的携带有用户标识及该用户的 CSG信息的 S9*会话修改消息后, 如判断出 已经保存了所述用户标识,且保存的所述用户标识对应的 CSG信息与接收到 的所述 CSG信息不同, 则用所述接收到的 CSG信息替换所述保存的所述用 户标识对应的 CSG信息。
相应地, 一种业务接纳控制的实现系统, 应用于为家庭基站接入提供策 略控制服务的策略和计费规则功能 PCRFHNB中, 包括:
第一装置, 其设置为: 接收家庭基站网关发来的针对用户开展业务的接 纳控制请求;
第二装置, 其设置为: 根据用户的闭合用户组(CSG )信息对所述接纳 控制请求进行接纳控制。
优选地, 所述第二装置设置为: 根据用户的 CSG信息对所述接纳控制请 求进行接纳控制, 包括: 当判断出当前可用授权资源对 PCRFHNB接收到的接 纳控制请求中指示的资源使用要求无法全部满足时,优先接纳 CSG用户开展 的业务。
本发明实施例解决了在授权给移动接入使用的固网资源发生紧张的情况 下, 如何优先为 CSG用户开展业务提供 QoS保证的问题。 附图概述
图 1是现有技术中 HeNB接入 EPS的架构示意图;
图 2是现有技术中 WLAN接入 EPS的架构示意图;
图 3为本发明实施例中为不同的用户设备接入网络选择不同的 PCRF的 网络结构图;
图 4为本发明实施例中含有 PCRFHNB的网络结构图;
图 5是本发明应用示例一的流程图;
图 6是本发明应用示例二的流程图;
图 7是本发明应用示例三的流程图;
图 8是本发明应用示例四的流程图。 本发明的较佳实施方式
为使本发明的目的、 技术方案和优点更加清楚明白, 下文中将结合附图 对本发明的实施例进行详细说明。 需要说明的是, 在不冲突的情况下, 本申 请中的实施例及实施例中的特征可以相互任意组合。
根据 S9*会话建立时机和粒度的不同, 下列两种情况目前都无法实现基 于 CSG信息对用户开展业务进行接纳控制, 从而无法实现优先为 CSG用户 开展业务提供 QoS保证:
一种情况是: 用户附着到 EPC ( Evolved Packet Core, 演进分组核心网) 网络的时候建立 S9*会话。 这种情况下的 S9*会话为用户级别, 每个 S9*会话 为对应的用户所使用, 不能供其他的用户共享。 用户附着阶段的策略控制会 话建立过程如下描述:
在用户设备通过 HNB/HeNB 附着到网络、 建立策略控制会话 (例如 IP-CAN会话、 IP-Connectivity Access Network会话、 IP连接接入网络会话) 的时候, 核心网网元(例如 P-GW )根据现有 DRA ( Diameter Route Agent, Diameter, 路由代理)机制选择为该用户设备接入服务的 PCRF, 并将该用户 的 CSG相关信息上报给所选择的 PCRF。然而根据 DRA机制,有可能为不同 的用户设备接入网络选择不同的 PCRF, 如图 3所示, UE1、 UE2和 UE3从 同一 HNB/HeNB附着到网络时, 分别选择 PCRF 1为 UE1服务, PCRF2为 UE2月良务, PCRF3为 UE3月良务, 同时 PCRF1、 PCRF2和 PCRF3才艮据 IPSec 隧道( HNB/HeNB和 SeGW之间建立的安全隧道,该 HNB/HeNB接入下所有 用户和 EPC网络交互数据都使用相同的 IPSec隧道加密数据 )信息选择相同 的 BPCF, 并分别建立 S9*会话。 这种情况下, 每个 PCRF只能感知自己所服 务的 UE提供的 CSG信息, 而无法感知该 HNB/HeNB下所有用户的 CSG信 息 (例如 PCRF1仅有用户 1的 CSG信息, 但不感知用户 2和用户 3的 CSG 信息) 。 而如果要实现基于 CSG信息的接纳控制, 需要感知该 HNB/HeNB 接入下所有用户的 CSG信息, 因此这种情况下 PCRF无法实现基于 CSG信 息对上述用户开展业务进行接纳控制,从而无法实现优先为 CSG用户开展的 业务提供 QoS保证。 另外, 通过同一 HNB/HeNB或者通过不同 HNB/HeNB (但是这些 HNB/HeNB使用相同的固网接入线路 backhaul (回程线路) , 共 享 HNB/HeNB授权 QoS )接入的用户会选择相同的 BPCF, 但是按照现有技 术 BPCF只接收来自 PCRF的授权 QoS信息(即 QoS规则), 而授权 QoS中 不包含用户相关的信息, 即目前 BPCF无法感知用户信息, 因此在 BPCF上 也无法基于 CSG信息对上述用户开展业务进行接纳控制,从而无法实现优先 为 CSG用户开展的业务提供 QoS保证。
另一种情况是: 在 HNB/HeNB上电时建立 S9*会话。 这种情况下的 S9* 会话为 HNB/HeNB级别, 该 S9*会话为所述 HNB/HeNB接入下的所有用户 所共享。 该情况下的策略控制会话建立过程如下描述:
当 HNB/HeNB上电的时候 , HNBGW选择 PCRFHNB , 并建立 S 15会话。 PCRFHNB用于为上述 HNB/HeNB接入提供策略控制服务,即为通过所述 HNB 接入的用户使用 HNB资源提供资源管理。 PCRFHNB和 BPCF之间建立 S9*会 话。 后续当 UE通过所述 HNB/HeNB附着到 EPC的时候, 根据 DRA机制发 现为 UE服务的 PCRF , 并且在核心网网元 (例如 P-GW )和 PCRF之间建立 策略控制会话。 然而根据 DRA机制,有可能为不同的用户设备接入网络选择 不同的 PCRF, 如图 4所示 , UE1、 UE2和 UE3从同一 HNB/HeNB附着到网 络时, 分别选择 PCRF1为 UE1服务, PCRF2为 UE2服务, PCRF3为 UE3 服务, 但是 HNB/HeNB上电阶段建立的 S9*会话为通过其接入的所有 UE所 共用。这种情况下,每个 PCRF也只能感知自己服务的 UE提供的 CSG信息, 而无法感知该 HNB/HeNB下所有用户的 CSG信息 (例如 PCRF1仅有用户 1 的 CSG信息, 但不感知用户 2和用户 3的 CSG信息 ) , 而如果要实现基于 CSG信息的接纳控制,需要感知该 HNB/HeNB接入下所有用户的 CSG信息, 因此这种情况下 PCRF无法实现基于 CSG信息对上述用户开展业务进行接纳 控制, 从而无法实现优先为 CSG用户开展的业务提供 QoS保证。 另外, HNB/HeNB上电阶段选择的 PCRFHNB会为通过所述 HNB/HeNB接入的所有用 户服务, 且 S9*会话建立阶段选择的 BPCF也会为通过所述 HNB/HeNB接入 的所有用户服务, 但是按照现有技术 PCRFHNB和 BPCF 上都无法获取所述 HNB/HeNB下所有接入用户的 CSG信息, 因此在 PCRFHNB或者 BPCF上也无 法基于 CSG信息对上述用户开展业务进行接纳控制, 从而无法实现优先为 CSG用户开展的业务提供 QoS保证。
一种业务接纳控制的实现方法, 应用于 BPCF中, 包括:
接收 PCRF发来的针对用户开展业务的接纳控制请求;
根据用户的 CSG信息对上述接纳控制请求进行接纳控制。
在本发明的实施例中,根据用户的 CSG信息对上述接纳控制请求进行接 纳控制, 具体包括: 若该 BPCF判断出当前可用授权资源对本 BPCF接收到 的接纳控制请求中指示的资源使用要求无法全部满足,则优先接纳 CSG信息 为 CSG用户的用户开展的业务, 即优先接纳 CSG用户开展的业务。
在本发明的实施例中, 上述接纳控制请求中携带有待开展业务的用户的 CSG信息;
则上述优先接纳 CSG信息为 CSG用户的用户开展的业务, 具体包括: 根据所述接纳控制请求中携带的所述 CSG信息以及与该用户使用相同 HNB或 HeNB的其他用户的 CSG信息进行决策, 优先接纳接纳控制请求中 携带的 CSG信息为 CSG用户的用户开展的业务。
在本发明的另一实施例中, 在接收上述接纳控制请求之前, 所述方法还 包括:
接收 PCRF发来的 S9*会话操作消息,其中携带相关用户的用户标识及用 户的 CSG信息;
保存每一用户的用户标识和该用户的 CSG信息的对应关系;
其中, S9*会话操作消息包括: S9*会话建立消息或者 S9*会话修改消息。 在本发明的另一实施例中, 接纳控制请求中还可以携带有待开展业务的 用户的用户标识;
相应地, 优先接纳 CSG信息为 CSG用户的用户开展的业务, 具体包括: 根据该接纳控制请求中携带的用户标识查找对应的 CSG信息,然后结合 和该用户使用相同 HNB或者 HeNB的其他用户的 CSG信息进行决策, 优先 接纳查找到的 CSG信息为 CSG用户的用户开展的业务。
此外, 所述方法还包括: 在接收到 PCRF发来的携带有用户标识及用户 CSG信息的 S9*会话修改消息后, 如果 BPCF上已经保存了所述用户标识, 但 BPCF上保存的和所述用户标识对应的 CSG信息与所述接收到的 CSG信 息不同, 则用所述接收到的 CSG信息替换所述保存的 CSG信息。
相应地, 在本实施例中, 一种业务接纳控制的实现系统, 应用于宽带策 略控制功能(BPCF ) 中, 包括:
第一装置, 用于接收策略和计费规则功能(PCRF )发来的针对用户开展 业务的接纳控制请求;
第二装置, 用于根据用户的闭合用户组(CSG )信息对所述接纳控制请 求进行接纳控制。
较优地,所述第二装置用于根据用户的 CSG信息对所述接纳控制请求进 行接纳控制, 具体包括: 第二装置用于当判断出当前可用授权资源对所述第 一装置接收到的接纳控制请求中指示的资源使用要求无法全部满足时, 优先 接纳 CSG用户开展的业务。
较优地, 所述接纳控制请求中携带有待开展业务的用户的 CSG信息; 所述第二装置用于优先接纳 CSG用户开展的业务, 具体包括:
所述第二装置用于根据所述接纳控制请求中携带的所述 CSG信息以及 和所述用户使用相同家庭基站( HNB )或者演进的家庭基站( HeNB )的其他 用户的 CSG信息进行决策, 优先接纳 CSG用户开展的业务。
较优地, 所述系统还包括:
第三装置,用于接收所述 PCRF发来的 S9*会话操作消息,其中携带用户 的 CSG信息及用户标识; 还用于保存所述用户的 CSG信息及所述用户标识的对应关系;
其中, 所述 S9*会话操作消息包括: S9*会话建立消息或者 S9*会话修改 消息。
较优地, 所述接纳控制请求中携带有待开展业务的用户的用户标识; 所述第二装置用于优先接纳 CSG用户开展的业务, 具体包括:
所述第二装置用于根据所述接纳控制请求中携带的所述用户标识查找该 用户的 CSG信息并结合和所述用户使用相同家庭基站(HNB )或者演进的家 庭基站( HeNB )的其他用户的 CSG信息进行决策, 优先接纳 CSG用户开展 的业务。
较优地, 所述系统还包括:
第四装置, 用于在接收到所述 PCRF发来的携带有用户标识及该用户的 CSG信息的 S9*会话修改消息后, 如判断出已经保存了所述用户标识, 且保 存的所述用户标识对应的 CSG信息与接收到的所述 CSG信息不同, 则用所 述接收到的 CSG信息替换所述保存的所述用户标识对应的 CSG信息。
在本实施例中,另一种业务接纳控制的实现方法,应用于为家庭基站(包 括 HNB或 HeNB )接入提供策略控制服务的策略和计费规则功能 PCRFHNB 中, 包括:
接收家庭基站网关发来的针对用户开展业务的接纳控制请求;
根据用户的 CSG信息对所述接纳控制请求进行接纳控制。
其中, 根据用户的 CSG信息对接纳控制请求进行接纳控制, 具体包括: 当 PCRFHNB判断出当前可用授权资源对 PCRFHNB接收到的接纳控制请求 中指示的资源使用要求无法全部满足时, 优先接纳 CSG用户开展的业务。
相应地, 一种业务接纳控制的实现系统, 应用于为家庭基站接入提供策 略控制服务的策略和计费规则功能 PCRFHNB中, 包括:
第一装置, 用于接收家庭基站网关发来的针对用户开展业务的接纳控制 请求;
第二装置, 用于根据用户的闭合用户组(CSG )信息对所述接纳控制请 求进行接纳控制。
较优地,所述第二装置用于根据用户的 CSG信息对所述接纳控制请求进 行接纳控制, 具体包括: 所述第二装置用于当判断出当前可用授权资源对 PCRFHNB接收到的接纳控制请求中指示的资源使用要求无法全部满足时, 优 先接纳 CSG用户开展的业务。
下面用本发明的几个示例对本发明进行进一步说明。
应用示例一:
假设 UE-A和 UE-B通过同一 HNB/HeNB接入 EPS网络,其中,使用 UE-A 的用户 A为 CSG用户, 使用 UE-B的用户 B为非 CSG用户。 UE-A和 UE-B 同时开展业务, 网络需要结合用户的 CSG信息为其开展业务进行接纳控制。
用户在开展业务之前, 需要通过 HNB/HeNB附着到 EPS网络, 附着过程 中用户需要将其所使用的 IPSec隧道信息(即 HNB/HeNB和 Se-GW之间建立 的 IPSec隧道信息, 包含 HNB/HeNB的本地 IP地址 )以及其他信息(例如用 户标识、 用户的 CSG信息等)发送给 PCEF/BBERF。 在本实施例中, 以用户 A和用户 B通过 HNB/HeNB附着到 EPS网络为例, 用户 A和用户 B在附着 过程中, 需要分别将各自的用户标识、 CSG信息和 IPSec 隧道信息发送给 PCEF/BBERF。
DRA根据用户标识为各用户接入选择服务的 PCRF。 DRA选择 PCRF-A 为 UE-A服务, 选择 PCRF-B 为 UE-B服务。 然后, PCEF/BBERF分别和 PCRF-A, PCRF-B建立策略控制会话, 并将用户 A的标识信息、 IPSec隧道 信息、 用户 A的 CSG信息等发送给 PCRF-A, 将用户 B的标识信息、 IPSec 隧道信息、 用户 B的 CSG信息等发送给 PCRF-B。
PCRF-A和 PCRF-B分别根据在 UE-A和 UE-B附着过程中接收的 IPSec 隧道信息中的 HNB/HeNB本地 IP地址发现 BPCF ,并建立 S9*会话。由于 UE-A 和 UE-B使用相同的 HNB/HeNB接入 EPS , 因此 PCRF-A和 PCRF-B会根据 IPSec隧道信息选择到相同的 BPCF。
假设此时 UE-A和 UE-B同时开展业务, BPCF为其提供接纳控制的流程 如图 5所示, 包括: 501、 PCRF-A和 PCRF-B分别收到 UE-A和 UE-B开展业务的授权请求。 例如: 如果是用户发起的业务, 则 PCRF收到的是来自 PCEF/BBERF的资源 授权请求; 如果是网络发起的业务,则 PCRF收到的是来自 AF的业务授权请 求;
502、 针对收到的授权请求, PCRF-A和 PCRF-B 分别进行策略决策。
PCRF-A针对 UE-A开展业务产生授权 QoS-A(以 QoS规则 -A表示),PCRF-B 针对 UE-B开展所述业务产生授权 QoS-B (以 QoS规则 -B表示) ;
503、 通过附着阶段建立的 S9*会话, PCRF-A向 BPCF发起接纳控制请 求, 其中携带 QoS规则 -A和用户 A的 CSG信息, PCRF-B向 BPCF发起接 纳控制请求, 其中携带 QoS规则 -B和用户 B的 CSG信息。
504、 BPCF根据用户 A和用户 B的 CSG信息分别对 QoS规则 -A和 QoS 规则 -B进行接纳控制 , 由于此时 HNB/HeNB的授权 QoS不能满足 UE-A和 UE-B同时开展业务的需要, 而用户 A为 CSG用户, 用户 B为非 CSG用户, 因此 BPCF接受 QoS规则 -A, 即接纳 UE-A开展上述业务, 而拒绝 QoS规则 -B, 即拒绝接纳 UE-B开展业务;
505、 BPCF向 PCRF返回接纳控制结果。 BPCF向 PCRF-A返回接纳控制 接受的响应; BPCF向 PCRF-B返回接纳控制拒绝的响应;
506、 根据 BPCF返回的接纳控制结果, PCRF决策是否下发策略。
当 PCRF-A收到接纳控制接受的响应消息后, 将 QoS规则 -A下发给 BBERF, 或者将 QoS规则 -A对应的 PCC规则 -A下发给 PCEF; 当 PCRF-B 收到接纳控制拒绝的响应消息后, 释放 QoS规则 -B, 如果是 UE-B发起的业 务, 则 PCRF-B向 PCEF/BBERF返回授权失败的响应, 如果是网络主动发起 的业务, 则 PCRF-B向 AF返回授权失败的响应。
507、 当 PCEF/BBERF收到 PCRF-A下发的策略之后, 执行策略, 并根 据授权 QoS-A完成 UE-A和 PCEF/BBERF之间的承载资源预留。
应用示例二: 假设 UE-A和 UE-B通过同一 HNB/HeNB接入 EPS网络,其中使用 UE-A 的用户 A为 CSG用户, 使用 UE-B的用户 B为非 CSG用户。 UE-A和 UE-B 同时开展业务, 网络需要结合用户 A和用户 B的 CSG信息为其开展业务进 行接纳控制。
UE-A和 UE-B在附着过程中, 将各自对应的用户 A和用户 B的 CSG信 息与用户标识信息发送给 BPCF , BPCF保存相关信息。
BPCF对用户开展业务实施接纳控制的流程, 如 6图所示, 包括:
601、 UE-A通过 HNB/HeNB附着到 EPS网络;
602、 PCEF/BBERF收到 UE-A发来的附着请求, 该附着请求中包含用户 A 的标识信息及 IPSec 隧道信息等; DRA根据用户标识发现 PCRF-A, PCEF/BBERF和 PCRF-A建立策略控制会话 , 向 PCRF-A发起授权请求。
603、 PCRF-A完成策略决策;
604、 PCRF-A根据 IPSec隧道信息中的 HNB/HeNB IP地址发现 BPCF, 并建立 S9*会话, 然后将用户 A的标识信息及 CSG信息发送给 BPCF进行保 存;
605. PCRF-A向 PCEF/BBERF下发策略,同时向 PCEF/BBERF下发 Event trigger (事件触发) , 订阅用户 A的 CSG信息改变的事件, 要求如果用户 A 的 CSG信息发生改变时上报给 PCRF-A;
606、 UE-A和 PCEF/BBERF之间完成附着过程;
UE-B的附着过程参照 UE-A的附着过程, 此处不再进行赘述。
607、 PCEF/BBERF检测到用户 A的 CSG信息发生改变;
608、 PCEF/BBERF执行事件上报, 向 PCRF-A通知用户 A的 CSG信息 发生了变化, 并将最新的用户 A的 CSG信息上报给 PCRF-A;
609、 PCRF-A向 BPCF发起 S9*会话修改消息, 将用户 A的标识信息和 最新的 CSG信息发送给 BPCF, BPCF据此进行更新;
610、 PCRF-A和 PCRF-B分别收到了 UE-A和 UE-B开展业务的授权请 求。 例如: 如果是用户发起的业务, 则 PCRF收到的是来自 PCEF/BBERF的 资源授权请求; 如果是网络发起的业务,则 PCRF收到的是来自 AF的业务授 权请求。 611、 针对收到的授权请求, PCRF-A和 PCRF-B 分别进行策略决策。 PCRF-A针对 UE-A开展业务产生授权 QoS-A(以 QoS规则 -A表示),PCRF-B 针对 UE-B开展所述业务产生授权 QoS-B (以 QoS规则 -B表示) ;
612、 通过附着阶段建立的 S9*会话, PCRF-A向 BPCF发起接纳控制请 求, 其中携带 QoS规则 -A和用户 A的标识信息, PCRF-B向 BPCF发起接纳 控制请求, 其中携带 QoS规则 -B和用户 B的标识信息。
613、 BPCF分别根据接收到的用户 A的标识信息和用户 B的标识信息查 找用户 A和用户 B的 CSG信息,然后分别才艮据二者的 CSG信息相应地对 QoS 规则 -A和 QoS规则 -B进行接纳控制。
由于此时 HNB/HeNB的授权 QoS不能满足 UE-A和 UE-B同时开展业务 的需要,而用户 A为 CSG用户,用户 B为非 CSG用户, 因此 BPCF接受 QoS 规则 -A, 而拒绝 QoS规则 -B, 即接纳 UE-A开展业务, 拒绝接纳 UE-B开展 业务。
614、 BPCF向 PCRF返回接纳控制结果, 即: BPCF向 PCRF-A返回接纳 控制接受的响应, 向 PCRF-B返回接纳控制拒绝的响应。
615、 根据 BPCF返回的接纳控制结果, PCRF决策是否下发策略。
当 PCRF-A收到接纳控制接受的响应消息后, 将 QoS规则 -A下发给 BBERF, 或者将 QoS规则 -A对应的 PCC规则 -A下发给 PCEF; 当 PCRF-B 收到接纳控制拒绝的响应消息后, 释放 QoS规则 -B, 如果是 UE-B发起的业 务, 则 PCRF-B向 PCEF/BBERF返回授权失败的响应, 如果是网络主动发起 的业务, 则 PCRF-B向 AF返回授权失败的响应。
616、 当 PCEF/BBERF收到 PCRF-A下发的策略之后, 执行策略, 并根 据授权 QoS-A完成 UE-A和 PCEF/BBERF之间的承载资源预留。
应用示例三:
本示例针对用户通过 HNB接入附着到 EPS系统后开展业务, 并实施接 纳控制的过程。根据图 1所示的架构,如果用户通过 HNB接入 EPS, 则 HNB GW必须部署。 在 HNB上电的时候, HNB GW发现为所述 HNB接入服务的 PCRFHNB并建立 S15会话, 将 IPSec隧道信息发送给 PCRFHNB, PCRFHNB根 据 IPSec隧道信息中的 HNB IP地址发现 BPCF, 然后与 BPCF建立 S9*会话。 用户通过 HNB附着到 EPS网络的时候, HNB GW将该用户的 CSG信息 及标识信息发送给 PCRFHNB, PCRFHNB通过 S9*会话将该用户的 CSG信息和 标识信息发送给 BPCF进行保存。
BPCF对 UE-A和 UE-B开展业务实施策略控制的流程如图 7所示 ,包括:
701、 HNB上电, 向 HNB GW发起注册;
702、 HNB GW和 PCRFHNB建立 S15会话, 并将 IPSec隧道信息发送给 PCRFHNB;
703、 PCRF誦根据 IPSec隧道信息发现 BPCF, 并建立 S9*会话; 704、 UE-A通过该 HNB发起附着到 EPS的过程;
705、HNB GW发起 S15会话修改,将用户 A的标识信息及用户 A的 CSG 信息发送给 PCRFHNB;
如果在 BPCF上实现接纳控制, 则 PCRFHNB将接收到的用户 A的标识信 息和用户 A的 CSG信息发送给 BPCF进行保存。
706、 当 PCEF/BBERF接收到 UE-A发起的附着请求后, 根据用户 A的 标识信息发现 PCRF-A, 并发起授权请求;
707、 PCRF-A对 UE-A的请求进行策略决策;
708、 PCRF-A向 PCEF/BBERF下发策略;
709、 UE-A和 PCEF/BBERF之间完成附着过程;
710、 UE-B按照与 UE-A相同的流程通过上述 HNB附着到 EPS网络;
711、 PCRF-A和 PCRF-B分别收到 UE-A和 UE-B开展业务的授权请求。 例如: 如果是用户 A/B 发起的业务, 则 PCRF-A/PCRF-B 收到的是来自 PCEF/BBERF的资源授权请求; 如果是网络发起的业务, 则 PCRF-A/PCRF-B 收到的是来自 AF的业务授权请求;
712、 针对收到的授权请求, PCRF-A和 PCRF-B 分别进行策略决策。
PCRF-A针对 UE-A开展业务产生授权 QoS-A(以 QoS规则 -A表示),PCRF-B 针对 UE-B开展所述业务产生授权 QoS-B (以 QoS规则 -B表示 ); 713、 PCRF-A将针对 UE-A的授权下发给 PCEF/BBERF; PCRF-B将针 对 UE-B的 4受权下发给 PCEF/BBERF;
714、 PCEF/BBERF根据 PCRF-A/PCEF-B下发的策略, 发起对应的承载 操作, 预留相应的资源。
715、 HNB GW接收到承载操作请求后 , 分别向 PCRFHNB发起针对 UE-A 的接纳控制请求和针对 UE-B的接纳控制请求; 其中,针对 UE-A的接纳控制 请求中携带: QoS规则 -A、 用户 A的标识信息及用户 A的 CSG信息等; 针 对 UE-B的接纳控制请求中携带: QoS规则 -B、 用户 B的标识信息及用户 B 的 CSG信息等;
716、 PCRFHNB根据接入到该 HNB的用户的 CSG信息,对上述针对 UE-A 的接纳控制请求以及针对 UE-B的接纳控制请求进行接纳控制。 由于 HNB授 权 QoS不能同时满足 UE-A和 UE-B开展业务对 QoS的需求,而 UE-A为 CSG 用户, UE-B为非 CSG用户, 则 PCRF接受 UE-A开展业务, 而拒绝 UE-B开 展业务。
如果由 BPCF执行接纳控制, 则在本步骤中, PCRFHNB接收到接纳控制 请求后,将 UE-A和 UE-B对应的 QoS规则信息以及用户 A和用户 B的 CSG 信息下发给 BPCF, 由 BPCF结合用户的 CSG信息,对 UE-A和 UE-B开展业 务使用 QoS资源进行接纳控制, 并将结果发送给 PCRFHNB。
717、 PCRFHNB将接纳控制的结果(即: 接受 UE-A开展业务, 拒绝 UE-B 开展业务) 下发给 HNB GW;
718、 HNB GW根据 PCRFHNB返回的接纳控制的结果执行策略, 发起到 UE-A的承载资源预留过程。
719、根据接纳控制的结果,ΗΝΒ GW发起到 PCEF/BBERF之间的与 UE-B 对应的承载资源释放。
应用示例四:
本示例描述的是对于共用同一固网 backhaul的不同接入下的 UE同时开 展业务实施接纳控制的实现。 例如: 用户 A通过 HeNB接入 EPS, 且 UE-用 户 A为 CSG用户; 用户 B通过 WLAN接入 EPS。 UE-A和 UE-B同时开展业 务, 由 BPCF实现接纳控制。 需要说明的是, 通过 WLAN接入的用户不存在 CSG用户和非 CSG用户之分。
UE-A通过 HeNB附着到 EPS网络, PCEF根据用户 A的标识信息发现 PCRF-A, 并将用户 A的标识信息、 用户 A的 CSG信息以及 IPSec隧道信息 发送给 PCRF-A。 PCRF-A根据 IPSec隧道信息发现 BPCF, 建立 S9*会话, 并 将用户 A的标识信息及用户 A的 CSG信息发送给 BPCF进行保存。
UE-B通过 WLAN附着到 EPS网络,假设固定网络不支持基于 3GPP( The 3rd Generation Partnership Project, 第三代合作伙伴计戈 )的认证方式, 固 网不感知 UE-B的接入, UE-B和 ePDG之间建立 IPSec隧道, PCEF根据用户 B的标识信息发现 PCRF-B后, 将用户 B的标识信息、 用户 B的 CSG信息以 及 IPSec隧道信息发送给 PCRF-B。 PCRF-B根据 IPSec隧道信息发现 BPCF, 建立 S9*会话, 并将用户 B的标识信息发送给 BPCF进行保存。 由于 UE-B通 过 WLAN接入, 因此不存在 CSG信息。 由于 UE-A和 UE-B使用相同的固网 backhaul接入 EPS网络,因此 PCRF-A根据 UE-A使用的 IPSec隧道信息发现 的 BPCF和 PCRF-B根据 UE-B使用的 IPSec隧道信息发现的 BPCF相同。
BPCF对 UE-A和 UE-B开展业务实施策略控制的过程如图 8所示,包括:
801、 UE-A通过 HeNB附着到 EPS的过程同上述应用示例二中的步骤 601-606, 在此不再进行赞述;
802、 UE-B通过 WLAN发起到 EPS网络的附着;
803、 PCEF 收到 UE-B 的附着请求后, 根据用户 B 的标识信息发现
PCRF-B, 并向 PCRF- B发起授权请求, 该请求中携带: 用户 B的标识信息 及 UE-B的本地 IP地址;
804、 PCRF-B对 UE-B的附着请求进行策略决策;
805、 PCRF-B根据 UE-B的本地 IP地址发现 BPCF, 并建立 S9*会话, 将用户 B的标识信息发送给 BPCF进行保存;
806、 PCRF-B向 PCEF返回策略;
807、 UE-B和 PCEF之间完成附着的其他流程。
808、 PCRF-A和 PCRF-B分别收到 UE-A和 UE-B开展业务的授权请求。 例如: 如果是用户发起的业务, 则 PCRF收到的是来自 PCEF的资源授权请 求; 如果是网络发起的业务, 则 PCRF收到的是来自 AF的业务授权请求。
809、 针对收到的授权请求, PCRF-A和 PCRF-B 分别进行策略决策。 PCRF-A针对 UE-A开展业务产生授权 QoS-A(以 QoS规则 -A表示),PCRF-B 针对 UE-B开展所述业务产生授权 QoS-B (以 QoS规则 -B表示) ;
810、 通过附着阶段建立的 S9*会话, PCRF-A向 BPCF发起接纳控制请 求, 其中携带 QoS规则 -A和用户 A的标识信息, PCRF-B向 BPCF发起接纳 控制请求, 其中携带 QoS规则 -B和用户 B的标识信息;
811、 BPCF分别根据接收到的用户 A的标识信息和用户 B的标识信息获 取用户 A和用户 B的 CSG信息。
BPCF获知用户 A为 CSG用户,而用户 B没有 CSG信息,因此在对 QoS 规则 -A和 QoS规则 -B进行接纳控制时, 由于此时 HeNB的授权 QoS不能满 足 UE-A和 UE-B同时开展业务的需要, 而用户 A为 CSG用户, 应优先提供 QoS保证, 因此 BPCF接受 QoS规则 -A, 而拒绝 QoS规则 -B, 即:接纳 UE-A 开展业务, 拒绝接纳 UE-B开展业务。
812、 BPCF向 PCRF返回接纳控制结果, 即: BPCF向 PCRF-A返回接纳 控制接受的响应 , 向 PCRF-B返回接纳控制拒绝的响应。
813、 根据 BPCF返回的接纳控制结果, PCRF决策是否下发策略。
当 PCRF-A收到接纳控制接受的响应消息后, 将 PCC规则 -A下发给 PCEF。 当 PCRF-B收到接纳控制拒绝的响应消息后, 释放 PCC规则 -B; 如果 是 UE-B发起的业务, 则 PCRF-B向 PCEF返回授权失败的响应, 如果是网络 主动发起的业务, 则 PCRF-B向 AF返回授权失败的响应。
814、 当 PCEF收到 PCRF-A下发的策略之后, 执行策略, 并根据授权 QoS-A完成 UE-A和 PCEF之间的承载资源预留。
综上所述, 通过本发明上述实施例, 解决了具体如何实现业务接纳管理 和资源管理的问题, 使 QoS总需求不超过家庭基站接入的签约固网线路所能 提供的 QoS。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
以上所述仅为本发明的优选实施例而已, 并非用于限定本发明的保护范 围。 根据本发明的发明内容, 还可有其他多种实施例, 在不背离本发明精神 改变和变形, 凡在本发明的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。
工业实用性
本发明实施例解决了在授权给移动接入使用的固网资源发生紧张的情况 下, 如何优先为 CSG用户开展业务提供 QoS保证的问题。

Claims

权 利 要 求 书
1、 一种业务接纳控制的实现方法, 应用于宽带策略控制功能(BPCF ) 中, 包括:
接收策略和计费规则功能(PCRF )发来的针对用户开展业务的接纳控制 请求;
根据用户的闭合用户组 ( CSG )信息对所述接纳控制请求进行接纳控制。
2、 如权利要求 1所述的方法, 其中,
所述根据用户的 CSG信息对所述接纳控制请求进行接纳控制, 包括: 当所述 BPCF判断出当前可用授权资源对所述 BPCF接收到的接纳控制 请求中指示的资源使用要求无法全部满足时,优先接纳 CSG用户开展的业务。
3、 如权利要求 2所述的方法, 其中,
所述接纳控制请求中携带有待开展业务的用户的 CSG信息;
所述优先接纳 CSG用户开展的业务, 包括:
根据所述接纳控制请求中携带的所述 CSG信息以及和所述用户使用相 同家庭基站( HNB )或者演进的家庭基站( HeNB ) 的其他用户的 CSG信息 进行决策, 优先接纳 CSG用户开展的业务。
4、 如权利要求 1或 2所述的方法, 其中,
在接收所述接纳控制请求之前, 所述方法还包括:
接收所述 PCRF发来的 S9*会话操作消息, 其中携带用户的 CSG信息及 用户标识;
保存所述用户的 CSG信息及所述用户标识的对应关系;
其中, 所述 S9*会话操作消息包括: S9*会话建立消息或者 S9*会话修改 消息。
5、 如权利要求 4所述的方法, 其中,
所述接纳控制请求中携带有待开展业务的用户的用户标识;
所述优先接纳 CSG用户开展的业务, 包括: 根据所述接纳控制请求中携带的所述用户标识查找该用户的 CSG信息 并结合和所述用户使用相同家庭基站(HNB )或者演进的家庭基站(HeNB ) 的其他用户的 CSG信息进行决策, 优先接纳 CSG用户开展的业务。
6、 如权利要求 4所述的方法, 其中, 所述方法还包括:
在接收到所述 PCRF发来的携带有用户标识及该用户的 CSG信息的 S9* 会话修改消息后, 如判断出已经保存了所述用户标识, 且保存的所述用户标 识对应的 CSG信息与接收到的所述 CSG信息不同, 则用所述接收到的 CSG 信息替换所述保存的所述用户标识对应的 CSG信息。
7、一种业务接纳控制的实现方法, 应用于为家庭基站接入提供策略控制 服务的策略和计费规则功能 PCRFHNB中, 包括:
接收家庭基站网关发来的针对用户开展业务的接纳控制请求;
根据用户的闭合用户组 ( CSG )信息对所述接纳控制请求进行接纳控制。
8、 如权利要求 7所述的方法, 其中,
所述根据用户的 CSG信息对所述接纳控制请求进行接纳控制, 包括: 当所述 PCRFHNB判断出当前可用授权资源对 PCRFHNB接收到的接纳控制 请求中指示的资源使用要求无法全部满足时,优先接纳 CSG用户开展的业务。
9、 一种业务接纳控制的实现系统, 应用于宽带策略控制功能(BPCF ) 中, 包括:
第一装置, 其设置为: 接收策略和计费规则功能(PCRF )发来的针对用 户开展业务的接纳控制请求;
第二装置, 其设置为: 根据用户的闭合用户组(CSG )信息对所述接纳 控制请求进行接纳控制。
10、 如权利要求 9所述的系统, 其中,
所述第二装置是设置为: 当判断出当前可用授权资源对所述第一装置接 收到的接纳控制请求中指示的资源使用要求无法全部满足时, 优先接纳 CSG 用户开展的业务。
1 1、 如权利要求 10所述的系统, 其中, 所述接纳控制请求中携带有待开展业务的用户的 CSG信息; 所述第二装置设置为: 优先接纳 CSG用户开展的业务, 包括: 根据所述 接纳控制请求中携带的所述 CSG信息以及和所述用户使用相同家庭基站 ( HNB )或者演进的家庭基站(HeNB ) 的其他用户的 CSG信息进行决策, 优先接纳 CSG用户开展的业务。
12、 如权利要求 9或 10所述的系统, 其中, 还包括:
第三装置,设置为: 接收所述 PCRF发来的 S9*会话操作消息, 其中携带 用户的 CSG信息及用户标识; 保存所述用户的 CSG信息及所述用户标识的 对应关系; 其中, 所述 S9*会话操作消息包括: S9*会话建立消息或者 S9*会 话^ ί'爹改消息。
13、 如权利要求 12所述的系统, 其中,
所述接纳控制请求中携带有待开展业务的用户的用户标识;
所述第二装置设置为: 优先接纳 CSG用户开展的业务, 包括: 根据所述 接纳控制请求中携带的所述用户标识查找该用户的 CSG信息并结合和所述用 户使用相同家庭基站 ( ΗΝΒ )或者演进的家庭基站 ( HeNB ) 的其他用户的 CSG信息进行决策, 优先接纳 CSG用户开展的业务。
14、 如权利要求 12所述的系统, 其中, 还包括:
第四装置, 设置为: 在接收到所述 PCRF发来的携带有用户标识及该用 户的 CSG信息的 S9*会话修改消息后, 如判断出已经保存了所述用户标识, 且保存的所述用户标识对应的 CSG信息与接收到的所述 CSG信息不同, 则 用所述接收到的 CSG信息替换所述保存的所述用户标识对应的 CSG信息。
15、 一种业务接纳控制的实现系统, 应用于为家庭基站接入提供策略控 制服务的策略和计费规则功能 PCRFHNB中, 包括:
第一装置, 其设置为: 接收家庭基站网关发来的针对用户开展业务的接 纳控制请求;
第二装置, 其设置为: 根据用户的闭合用户组(CSG )信息对所述接纳 控制请求进行接纳控制。
16、 如权利要求 15所述的系统, 其中, 所述第二装置设置为:根据用户的 CSG信息对所述接纳控制请求进行接 纳控制, 包括: 当判断出当前可用授权资源对 PCRFHNB接收到的接纳控制请 求中指示的资源使用要求无法全部满足时, 优先接纳 CSG用户开展的业务。
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