WO2015018324A1 - 一种多接入系统中实现ip流移动性的方法和装置 - Google Patents
一种多接入系统中实现ip流移动性的方法和装置 Download PDFInfo
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- WO2015018324A1 WO2015018324A1 PCT/CN2014/083721 CN2014083721W WO2015018324A1 WO 2015018324 A1 WO2015018324 A1 WO 2015018324A1 CN 2014083721 W CN2014083721 W CN 2014083721W WO 2015018324 A1 WO2015018324 A1 WO 2015018324A1
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- access network
- resource information
- user equipment
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- flow
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- 238000000034 method Methods 0.000 title claims abstract description 72
- 238000005516 engineering process Methods 0.000 claims description 39
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- 238000004891 communication Methods 0.000 claims description 23
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- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000009826 distribution Methods 0.000 abstract description 4
- 230000001960 triggered effect Effects 0.000 description 22
- 230000008569 process Effects 0.000 description 19
- 238000010586 diagram Methods 0.000 description 17
- 238000012545 processing Methods 0.000 description 16
- 230000004048 modification Effects 0.000 description 11
- 238000012986 modification Methods 0.000 description 11
- 238000004590 computer program Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000011664 signaling Effects 0.000 description 4
- GVVPGTZRZFNKDS-JXMROGBWSA-N geranyl diphosphate Chemical compound CC(C)=CCC\C(C)=C\CO[P@](O)(=O)OP(O)(O)=O GVVPGTZRZFNKDS-JXMROGBWSA-N 0.000 description 3
- 238000013507 mapping Methods 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
- H04W28/0827—Triggering entity
- H04W28/0831—Core entity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0876—Network utilisation, e.g. volume of load or congestion level
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for implementing Internet Protocol (IP) flow mobility in a multiple access system.
- IP Internet Protocol
- the multiple access technology enables the user equipment (UE) to access the Evolved Packet Core (EPC) through different access systems at the same time, and the flow mobility technology enables the user equipment to be in mobility, network congestion, etc.
- EPC Evolved Packet Core
- the IP Flow Mobility (IFOM) technology is designed to study packet data network (PDN) connections and IP flow switching, IP flow migration, and IP traffic seamless streaming in multiple access scenarios.
- PDN packet data network
- the figure user equipment is in the third generation partnership project (3 rf Generation Partnership Proj ect, 3 GPP) 1 and non-3 GPP (Non-3 GPP) of common coverage, according to operator policy, User preferences and service characteristics, such as voice over IP (VoIP) and session video streaming to 3GPP access (3GPP access) routing, and Web browsing, File Transport Protocol (FTP) download and non- Session video is streamed to non-3GPP access (Non-3GPP access) routes. Subsequently, the non-3GPP access congestion causes the web browsing and non-session video streams to fail to maintain the traffic shield requirement. Therefore, the foregoing IP flows (ie, web browsing and non-session video streams) are moved to the 3GPP access route.
- Figure 2 shows.
- 3GPP networks discover and select through access networks (Access Network Discovery and Selection)
- AKDSF AKDSF Function
- UE User Equipment
- the ANDSF policy includes priority-based access technologies and access networks (optional) corresponding to IP flows, where IP flows use quintuple (source IP address, destination IP address, source).
- the IP port number, the destination IP port number, and the protocol identifier above the IP layer are defined.
- the preferred access technology is: WLAN > E-UTRAN, where the wireless local area network (Wireless Local Access Network,
- SSID Service Set Identification
- a) UE trigger The method extends the direct or indirect signaling between the UE and the PGW to carry IP flow mobility rules (including rule identification, route filter (for describing IP flow), priority, routing address (corresponding access system) Information)) Implement interaction.
- IP flow mobility rules including rule identification, route filter (for describing IP flow), priority, routing address (corresponding access system) Information
- PMIP network-based mobility management protocol proxy mobile IP
- Step 31 The UE connects to the core network through the 3GPP access and the non-3GPP access at the same time. A part of the IP flows of the UE are routed through the 3GPP, and the remaining IP flows are routed through the non-3GPP access network.
- Step 32 The UE sends an IP flow mobility triggering signaling to the non-3GPP access, where the signaling includes an IP flow mobility routing rule, and the routing rule requires that the specific IP flow passes the non-3GPP access route. Specifically how this rule is implemented is determined by the protocol between the UE and the non-3GPP access.
- Step 33 The non-3GPP access sends a Proxy Binding Update (PBU) message to the PGW, where the message includes an IP flow mobility routing rule provided by the UE.
- PBU Proxy Binding Update
- the rule may adopt a protocol configuration option. , PCO) carrying, can also be achieved by extending PMIPv6 signaling.
- Step 34 The PGW sends an IP-Connectivity Access Network (IP-CAN) session modification message to the Policy and Charging Rules Function (PCRF) entity, where the message carries the IP flow of the UE and a change in the mapping relationship of its corresponding access system;
- IP-CAN IP-Connectivity Access Network
- PCRF Policy and Charging Rules Function
- Step 35 The PCRF entity saves the mapping relationship between the updated IP flow and its access system, and sends a GW control session and a Quality of Service (QoS) rule to the non-3GPP access ( QoS rules provision ) message;
- QoS Quality of Service
- Step 36 The PGW returns a Proxy Binding Acknowledgement (PBA) message to the non-3GPP access, indicating that the IP flow mobility request is accepted.
- PBA Proxy Binding Acknowledgement
- Step 37 The non-3GPP access returns an IP flow mobility ack message to the UE, indicating that the IP flow mobility request is accepted.
- IP flow mobility is triggered by the PCRF entity.
- the PCRF entity and the Policy and Charging Enforcement Function (PCEF) need to save and maintain the granularity of each IP flow (per IP flow). Enter system information.
- the PCRF entity determines which access system route each IP flow should pass through and sends the above information to the PCEF through Policy and Charging Control (PCC) rules.
- PCC Policy and Charging Control
- the implementation process of IP flow mobility based on the above solution is shown in FIG. 4, and includes the following steps: Step 41: The UE connects to the core network through 3GPP access and non-3GPP access at the same time.
- Step 42 The PCRF entity receives the information of the new service, performs policy decision, and decides to pass the related IP flow through the non-3GPP access route.
- Step 43 The PCRF entity initiates a gateway control and QoS rule providing process to the non-3GPP access, and sends a QoS rule to the non-3GPP access, where the QoS rule includes an IP flow mobility routing rule.
- Step 44 Performing QoS rules, such as reserved resources, for non-3GPP access;
- Step 45 After the QoS rule is executed, the non-3GPP access returns a response to the PCRF entity.
- Step 46 The PCRF entity initiates a PCC rule providing process to the PGW, and indicates to the PGW that the related IP flow should pass the non-3GPP access route.
- the PCC architecture aims to provide a policy and charging control method independent of the access technology, suitable for 3GPP access, such as the Universal Mobile Telecommunications System (UMTS), UMTS (Universal Mobile Telecommunications System, UMTS) ), Evolved UTRAN (E-UTRAN), and non-3GPP access, including Worldwide interoperability for Microwave Access (WiMAX), WLAN, and the like.
- the PCC architecture includes the PCRF, PCEF, Application Function (AF) and other nodes, and the QoS requirements of the AF to send the service.
- the PCRF entity makes a decision and forms a PCC rule (PCC rule) and sends it to the PCEF.
- the PCEF executes the rule.
- Data flow level QoS mapping is bearer level QoS.
- the core network control node sends the QoS requirement to the base station, and the base station performs resource scheduling according to the set scheduling algorithm.
- the non-3GPP access node needs to have a mechanism for guaranteeing according to the QoS requirements delivered by the PCRF entity.
- the basic principle of implementing QoS policy and charging control in the PCC architecture in the case of AF is shown in Figure 5.
- wireless communication networks have evolved into a heterogeneous communication system that includes multiple access technologies and access networks.
- the key factor in communication systems is the allocation and utilization of resources.
- resource scheduling of various radio access networks is performed separately, for example, resource coordination cannot be performed between e B and a WLAN access point (AP).
- AP WLAN access point
- resource scheduling for each access network separately is not conducive to optimal configuration of resources between networks. Therefore, centralized resource scheduling and control is of great significance for heterogeneous communication systems.
- the optimized resource scheduling methods mainly include the following:
- the UE Based on the UE.
- the core idea of this type of method is that the UE scans the surrounding network (including the cellular network and the WL AN network, etc.), and obtains related information such as data rate, QoS capability, signal shield, etc., and combines the policy information to select the access network.
- the core idea of this type of method is that the core network obtains the resource information of the access network, and then adjusts the access network selection policy or the admission control of the UE's service request.
- Embodiments of the present invention provide a method and apparatus for implementing IP flow mobility in a multiple access system, which can more effectively schedule and use resources limited to the access network.
- An embodiment of the present invention provides a method for implementing IP flow mobility in a multiple access system, where the method includes:
- the PCRF entity performs IP flow mobility decision on the user equipment based on the obtained resource information of the access network currently accessed by the user equipment, and obtains a result of IP flow mobility decision.
- the PCRF entity notifies the PCEF entity of the result of the IP flow mobility decision.
- the PCRF entity acquires resource information of the access network according to the following manner:
- the PCRF entity acquires resource information of the access network from the access network resource management entity (ANRME), where the ANRME stores resource information of the 3GPP partner plan 3GPP access network, and the non-3GPP access network
- ANRME access network resource management entity
- the resource information, the resource information of each access network stored in the ANRME is identified by the identifier of the access network as a unique key.
- the PCRF entity obtains resource information of the access network from the ANRME, and specifically includes:
- the PCRF entity receives the resource information of the access network that is actively sent by the ANRME; or the PCRF entity sends an acquisition request to the ANRME, where the acquisition request is used to request to acquire all the access networks stored by the ANRME. Resource information.
- the PCRF entity receives the resource information of the access network that is sent by the ANRME, which includes:
- the PCRF entity receives resource information of all access networks stored by the ANRME that are sent by the ANRME according to a set period; and/or,
- the PCRF entity receives the resource information of the updated access network sent by the ANRME, where the ANRME sends the updated resource information of the access network after updating the resource information of the access network stored by the ANRME. Give the PCRF entity.
- the PCRF entity performs IP flow mobility decision on the user equipment according to the resource information of the access network currently accessed by the user equipment, according to the first preferred acquisition manner. Specifically include:
- the PCRF entity After receiving the resource information of the access network sent by the ANRME, the PCRF entity determines resource information of an access network currently accessed by the user equipment served by the PCRF entity;
- the PCRF entity determines, according to resource information of the access network that the user equipment is currently accessing, whether the existing IP flow of the user equipment needs to be moved or terminated. Based on the foregoing first preferred manner, the PCRF entity performs IP flow mobility decision on the user equipment based on the obtained resource information of the access network, and specifically includes:
- the PCRF entity determines that the parameter information of the existing IP flow of the user equipment served by the user changes, or receives the trigger message sent by the application function AF entity or the PCEF entity;
- the PCRF entity determines, according to the resource information of the access network that the user equipment is currently accessing, whether the existing IP flow of the user equipment needs to be moved or terminates the transmission, or the PCRF entity is currently connected according to the user equipment. Entering the resource information of the access network, and determining an access technology and/or an access network for transmitting the new IP flow of the user equipment;
- the trigger message carries information for identifying an existing IP flow of the user equipment and parameter information of the existing IP flow update; or the trigger message carries a identifier for identifying the user equipment.
- the information of the IP flow and the parameter information of the newly added IP flow are added.
- the PCRF entity obtains the resource information of the access network from the ANRME, and specifically includes:
- the PCRF entity obtains the parameter information of the existing IP flow of the user equipment that is served by the user, or obtains the current connection of the user equipment to the ANRME after receiving the trigger message sent by the AF entity or the PCEF entity.
- Resource information of the access network
- the trigger message carries information for identifying an existing IP flow of the user equipment and parameter information of the existing IP flow update; or the trigger message carries a identifier for identifying the user equipment.
- the information of the IP flow and the parameter information of the newly added IP flow are added.
- the PCRF entity obtains, by the PCRF entity, the resource information of the access network that the user equipment is currently connected to, by the ANRME, specifically:
- the PCRF entity sends, to the ANRME, request information that carries an identifier of an access network that the user equipment is currently accessing, to obtain resource information of an access network that the user equipment currently accesses.
- the PCRF entity performs IP flow mobility decision on the user equipment based on the obtained resource information of the access network, which includes:
- the PCRF entity determines, according to the resource information of the access network that the user equipment is currently accessing, whether the existing IP flow of the user equipment needs to be moved or terminates the transmission, or the PCRF entity is currently connected according to the user equipment. Accessing the resource information of the access network, determining an access technology and/or access network for transmitting a new IP flow of the user equipment Network.
- the PCRF entity and the ANRME may be deployed independently or in combination, and the towel is:
- the PCRF entity communicates with the A RME through a defined standardized interface
- the PCRF entity If the PCRF entity is deployed in conjunction with the AKRME, the PCRF entity communicates with the AKRME through an internal interface.
- the resource information of each access network includes the resource usage of the access network, the service shield QoS that the access network can provide, and the return link rate of the access network. At least one of the information of the access network, where the resources of the access network include an air interface resource and a backhaul resource.
- the PCRF entity performs the IP flow mobility decision based on the obtained resource information of the access network, and the PCRF entity combines the resource information of the access network currently accessed by the user equipment and the IP flow.
- the QoS requirement is to adjust the distribution of the IP flow of the user equipment in each access network currently accessed by the user equipment, so that the limited resources of each access network can be more effectively scheduled and used, and the access network can be further avoided. Congestion has increased the service experience of users.
- An embodiment of the present invention provides a PCRF entity, including:
- a decision module configured to perform IP flow mobility decision on the user equipment based on the obtained resource information of the access network currently accessed by the user equipment, and obtain a result of the IP flow mobility decision;
- the notification module is configured to notify the PCEF entity of the result of the IP flow mobility decision.
- PCRF entity further includes:
- An acquiring module configured to acquire resource information of an access network from the A RME, where the ANRME stores resource information of a 3GPP partner plan 3GPP access network, and resource information of a non-3GPP access network, where The resource information of each access network stored in the ANRME is identified by the identifier of the access network as a unique key.
- the acquiring module is specifically configured to:
- the acquiring module is specifically configured to:
- the decision-making module is specifically configured to: after the acquiring module receives the resource information of the access network sent by the ANRME, determine, according to the foregoing first preferred manner, the current user equipment of the user service And the resource information of the access network that is accessed; and determining whether the existing IP flow of the user equipment needs to be moved or terminated according to resource information of the access network currently accessed by the user equipment.
- the decision-making module is specifically configured to: determine that the parameter information of the existing IP flow of the user equipment served by the user equipment changes, or receive the application function AF entity, according to the foregoing preferred method. Or the trigger message sent by the PCEF entity; the resource information of the access network currently accessed by the user equipment is determined from the resource information of the access network that is obtained by the acquiring module; and according to the user equipment Determining whether the existing IP flow of the user equipment needs to be moved or terminated, or determining the transmission station according to the resource information of the access network currently accessed by the user equipment. Add new user equipment
- the trigger message carries information for identifying an existing IP flow of the user equipment and parameter information of the existing IP flow update; or the trigger message carries a identifier for identifying the user equipment.
- the information of the IP flow and the parameter information of the newly added IP flow are added.
- the acquiring module is specifically configured to:
- the access network to which the user equipment is currently connected is obtained from the ANRME.
- the trigger message carries information for identifying an existing IP flow of the user equipment and parameter information of the existing IP flow update; or the trigger message carries a identifier for identifying the user equipment.
- the information of the IP flow and the parameter information of the newly added IP flow are added.
- the acquiring module is specifically configured to:
- the ANRME sends the request information of the identifier of the access network currently accessed by the user equipment to obtain the resource information of the access network currently accessed by the user equipment.
- the decision module is specifically configured to:
- the resource information of the access network currently accessed by the user equipment determines an access technology and/or an access network for transmitting a new IP flow of the user equipment.
- the PCRF entity and the ANRME may be deployed independently or in combination, and the towel is: If the PCRF entity is deployed independently of the ANRME, the acquiring module communicates with the ANRME through a defined standardized interface;
- the acquisition module communicates with the ANRME through an internal interface.
- An embodiment of the present invention provides another PCRF entity, including:
- transceiver a transceiver, at least one processor coupled to the transceiver, and a memory coupled to the transceiver and the at least one processor, respectively:
- the processor is configured to perform IP flow mobility decision on the user equipment based on the acquired resource information of the access network currently accessed by the user equipment; and notify the PCEF entity of the result of the IP flow mobility decision by using the transceiver .
- the transceiver is further configured to acquire resource information of the access network from the ANRME, where the ANRME stores resource information of the 3GPP access network and resource information of the non-3GPP access network, where the ANRME is in the ANRME.
- the stored resource information of each access network is identified by the identifier of the access network as a unique key.
- the memory is configured to store the resource information of the transceiver to obtain the access network from the ANRME.
- the transceiver is configured to: receive resource information of an access network that is actively sent by the ANRME; or send an acquisition request to the ANRME, where the request is used to request to obtain all accesses of the ANRME storage. Resource information of the network.
- the transceiver is configured to:
- the preferred acquisition mode as a preferred processing manner, the processor is configured to be specifically used for:
- the transceiver After receiving the resource information of the access network sent by the ANRME, the transceiver determines the resource information of the access network that the user equipment that the user equipment is currently accessing; and the resource information of the access network that the user equipment currently accesses, Determine whether the existing IP flow of the user equipment needs to be moved or terminated.
- the preferred acquisition mode as another preferred processing manner, the processor is configured to be specifically used for:
- the transceiver receives the trigger message sent by the application function AF entity or the PCEF entity; from the resource information of the access network stored in the memory, Determining resource information of the access network currently accessed by the user equipment; and determining, according to resource information of the access network currently accessed by the user equipment, whether the existing IP flow of the user equipment needs to be moved or terminated, or according to the user equipment
- the resource information of the currently accessed access network determines an access technology and/or an access network for transmitting a new IP flow of the user equipment;
- the trigger message carries information for identifying an existing IP flow of the user equipment and parameter information of the existing IP flow update; or the trigger message carries a identifier for identifying the user equipment. Add IP flow information And parameter information of the added IP flow.
- the processor is configured to: change the parameter information of the existing IP flow of the user equipment that is determined to be served by the user, or the transceiver receives the trigger message sent by the AF entity or the PCEF entity. Afterwards, the triggering transceiver obtains, from the ANRME, resource information of the access network to which the user equipment is currently connected;
- the trigger message carries information for identifying an existing IP flow of the user equipment and parameter information of the existing IP flow update; or the trigger message carries a identifier for identifying the user equipment.
- the information of the IP flow and the parameter information of the newly added IP flow are added.
- the processor is configured to determine, according to the context information of the user equipment that is saved by itself, or the information carried in the trigger message sent by the AF entity or the PCEF entity, to determine the access network currently accessed by the user equipment. And the triggering device sends the request information of the access network that the user equipment currently accesses to the A RME to obtain the resource information of the access network that the user equipment currently accesses.
- the processor is configured to: determine, according to resource information of the access network currently accessed by the user equipment in the memory, whether the existing IP flow of the user equipment needs to be moved or terminated, or Obtaining the resource information of the access network currently accessed by the user equipment, and determining an access technology and/or an access network for transmitting the new IP stream of the user equipment.
- the PCRF entity may be deployed independently of the ANRME; or, the PCRF entity may be deployed in conjunction with the A RME.
- the transceiver of the PCRF entity communicates with the AKRME through a defined standardized interface; if the PCRF entity and the ANRME are deployed together, the transceiver of the PCRF entity passes through the AKRME.
- the internal interface communicates.
- the PCRF entity provided by the embodiment of the present invention performs IP flow mobility decision based on the acquired resource information of the access network, and the PCRF entity combines the resource information of the access network and the QoS requirement of the IP flow to adjust the IP of the user equipment.
- a storage module configured to store and maintain resource information of the 3GPP access network and resource information of the non-3GPP access network, where the resource information of each access network stored by the storage module is identified by the access network Unique keyword
- a communication module configured to provide resource information of the access network to the PCRF entity.
- the communication module is specifically configured to:
- the information that the communication module actively sends the resource information of the access network to the PCRF entity includes: sending, according to the set period, resource information of all access networks stored by the storage module to the
- PCRF entity and / or,
- the storage module updates the resource information of the stored access network
- the resource information of the updated access network is sent to the PCRF entity.
- the PCRF entity may be deployed independently of the ANRME, or may be deployed in conjunction with the A RME.
- the communication module communicates with the PCRF through a defined standardized interface
- the communication module communicates with the PCRF entity through an internal interface.
- the embodiment of the present invention further provides another A RME entity, including:
- transceiver a transceiver, at least one processor coupled to the transceiver, and a memory coupled to the transceiver and the at least one processor, respectively:
- the memory is configured to store resource information of the 3GPP access network and resource information of the non-3GPP access network, where the resource information of each access network stored in the memory is identified by the identifier of the access network as a unique key
- the processor is configured to maintain resource information of each access network stored in the memory
- the transceiver is configured to provide resource information of the access network to the PCRF entity.
- the transceiver is configured to specifically:
- the resource information of the access network corresponding to the identifier carried by the request information is sent to the PCRF entity.
- the transceiver actively sends the resource information of the access network to the PCRF entity, and specifically includes: sending, according to the set period, resource information of all access networks stored in the memory to the PCRF entity; and/or,
- the updated resource information of the access network is sent to the PCRF entity.
- the PCRF entity may be deployed independently of the ANRME; or, the PCRF entity may be deployed in conjunction with the A RME. Further, if the ANRME and the PCRF entity are deployed independently, the transceiver is configured to communicate with the PCRF through the defined standardized interface;
- the transceiver is configured to communicate with the PCRF entity via the internal interface.
- the ANRME provided by the embodiment of the present invention can provide the resource information of the access network to the PCRF entity, so that the PCRF entity can consider the resource information of the access network currently accessed by the user equipment when performing the IP flow mobility decision. It can more effectively schedule and use the limited resources of each access network.
- FIG. 1 is a schematic diagram of routing IP flows in different access systems based on an operator policy in the background art
- FIG. 2 is a schematic diagram of IP flow mobility triggered by network congestion in the background art
- FIG. 3 is a schematic diagram of a UE-triggered IP flow mobility process provided in the background art
- FIG. 4 is a schematic diagram of a network triggered IP flow mobility process provided in the background art
- FIG. 5 is a schematic diagram of a principle of implementing a QoS policy and a charging control by a PCC architecture provided in the background;
- FIG. 6 is a schematic diagram of a method for implementing IP flow mobility in a multiple access system according to an embodiment of the present invention;
- FIG. 8 is a schematic diagram of a preferred processing procedure according to an embodiment of the present invention;
- FIG. 9 is a schematic diagram of another preferred processing procedure according to an embodiment of the present invention.
- FIG. 10 is a schematic diagram of an implementation process of Embodiment 1 provided by the present invention.
- FIG. 11 is a schematic diagram of an implementation process of Embodiment 2 provided by the present invention.
- Embodiment 12 is a schematic diagram of an implementation process of Embodiment 3 provided by the present invention.
- FIG. 13 is a schematic diagram of a PCRF entity according to an embodiment of the present invention.
- FIG. 14 is a schematic diagram of an A RME according to an embodiment of the present invention. detailed description
- the PCRF entity of the embodiment of the present invention performs IP flow mobility decision on the user equipment based on the obtained resource information of the access network currently accessed by the user equipment, so that the limited resources of each access network can be more effectively scheduled and use.
- a method for implementing IP flow mobility in a multiple access system includes the following steps:
- Step 61 The PCRF entity performs IP flow mobility decision on the user equipment based on the obtained resource information of the access network currently accessed by the user equipment. Specifically, when performing the IP flow mobility decision on the user equipment, the PCRF entity performs IP flow on the user equipment according to the resource information of the access network currently accessed by the user equipment and the QoS requirement of the IP flow of the user equipment. Mobility decision making.
- the IP flow mobility decision made by the user equipment includes performing IP flow mobility decision on the existing IP flow of the user equipment, that is, the IP flow currently transmitted by the user equipment, and the user equipment Add IP flows for IP flow mobility decisions.
- performing IP flow mobility decision on the existing IP flow of the user equipment includes determining whether the existing IP flow of the user equipment needs to be moved or terminating the transmission; performing IP flow mobility on the new IP flow of the user equipment.
- the decision includes selecting the appropriate access technology and/or access network for the new IP flow of the user equipment.
- Step 62 The PCRF entity notifies the PCEF entity of the result of the IP flow mobility decision.
- the PCRF entity After completing the IP flow mobility decision, the PCRF entity notifies the PCEF entity of the result of the IP flow mobility decision, where the PCEF is generally deployed in the PGW.
- the PCRF entity performs IP flow mobility decision based on the obtained resource information of the access network.
- the PCRF entity combines the resource information of the access network currently accessed by the user equipment and the QoS requirement of the IP flow. To adjust the distribution of the IP flow of the user equipment in each access network currently accessed by the user equipment, so that the limited resources of each access network can be more effectively scheduled and used, and the access network can be prevented from being congested. Phenomenon, improve the user's service experience.
- the PCRF entity obtains resource information of the access network according to the following manner:
- the PCRF entity obtains resource information of the access network from an Access Network Resource Management Entity (ANRME);
- ANRME Access Network Resource Management Entity
- the ANRME is used to maintain resource information of each access network, where the A RME stores resource information of the 3GPP access network and resource information of the non-3GPP access network, and each access network stored by the ANRME The resource information is identified by the identifier of the access network as a unique keyword.
- the newly added ANRME is used to store and maintain resource information of each access network, and the ANRME stores resource information of the 3GPP access network (such as e B, NodeB, home base station, etc.) and The resource information of the 3GPP access network (such as WLAN, WiMAX, etc.), and the resource information of each access network is stored in the AKRME with the identifier of the access network as a unique key; further, the identifier of the access network is accessed according to The network type is different.
- the identifier of the access network may be a global identifier of the cell.
- the identifier of the access network may be a basic service set identifier (BSSID). Homogenous ESS identifier (HESSID; Extended Service Set, ESS).
- the resource information of each access network stored in the ANRME includes resource usage of the access network (such as resource usage percentage), QoS that the access network can provide, and back of the access network. Passing backhaul at least one of the link rates; wherein, each access network resource includes air interface resources and back Pass (backhaul) resources.
- a RME and the PCRF entity can directly interact.
- a RME and PCRF entities are deployed in the following two ways:
- the AKRME can be deployed as an independent functional entity in the network, that is, the PCRF entity and the ARMME are deployed independently.
- the PCRF entity communicates with the ANRME through a defined standardized interface;
- the second method, the ANRME and the PCRF entity are combined in an enhanced resource and policy management function block, that is, the PCRF entity and the ANRME are deployed together.
- the PCRF entity communicates with the AKRME through the internal interface.
- the ANRME and PCRF entities are combined in an enhanced resource and policy management function block to communicate through the internal interface.
- the PCRF entity obtains resource information of the access network from the ANRME, and specifically includes the following two methods:
- the PCRF entity obtains resource information of the access network from the ANRME in advance, and stores the IP stream mobility decision based on the stored resource information of the access network when the IP flow mobility decision is needed.
- mode A further includes the following two ways:
- the Al and PCRF entities receive the resource information of the access network actively sent by the AKRME.
- mode A1 includes:
- the PCRF entity receives resource information of all access networks stored by the ANRME by the A RME according to a set period; and/or,
- the PCRF entity receives the updated resource information of the access network sent by the ANRME, and the ANRME sends the updated resource information of the access network to the PCRF entity after updating the resource information of the access network stored by the ANRME.
- the A2 and the PCRF entity actively send an acquisition request to the ANRME, where the acquisition request is used to request to obtain resource information of all access networks stored by the ANRME.
- the PCRF entity Based on the mode A1 and the mode A2, after receiving the resource information of the access network sent by the ANRME, the PCRF entity stores the acquired resource information of each access network.
- the PCRF entity Based on mode A1 and mode A2, in step 61, the PCRF entity performs IP flow mobility decision on the user equipment according to the resource information of the access network currently accessed by the user equipment, and specifically includes the following two processing methods: After receiving the resource information of the access network sent by the ANRME, the PCRF entity directly performs IP flow mobility decision on the user equipment of the service;
- the PCRF entity After receiving the resource information of the access network sent by the ANRME, the PCRF entity determines the resource information of the access network currently accessed by the user equipment served by the PCRF;
- the PCRF entity determines whether the existing IP flow of the user equipment needs to be moved or terminates according to resource information of the access network currently accessed by the user equipment. Further, if at least one IP flow currently transmitted by the user equipment needs to be moved, in step 62, the PCRF entity will use information for identifying the IP flow that needs to be moved (such as a packet filter corresponding to the IP flow) and the IP that needs to be moved. The target access network corresponding to the flow is notified to the PCEF entity;
- the PCRF entity notifies the PCEF entity of the information identifying the IP flow that needs to terminate the transmission.
- the PCRF entity determines resource information of an access network currently accessed by the user equipment served by the PCRF entity according to the following steps:
- the PCRF entity obtains identifiers of all access networks currently accessed by the user equipment according to the stored context information of each user equipment;
- the PCRF entity determines the resource information of the access network currently accessed by the user equipment from the resource information of all the access networks that have been obtained according to the identifiers of all the access networks that the user equipment is currently accessing.
- the identifiers of all access networks currently accessed by each user equipment are transmitted to the PCRF entity through the PCEF entity (PGW) when the user equipment establishes an IP connection through each access network.
- PGW PCEF entity
- Step 81 After receiving the access network resource information sent by the ANRME, the PCRF entity may obtain the resource information of the access network currently accessed by the UE according to the access network identifier currently accessed by the UE.
- Step 82 The PCRF entity comprehensively determines, according to the set algorithm, whether the access network currently accessed by the UE satisfies the IP flow demand transmitted by the UE.
- step 83 is performed;
- Step 83 The PCRF entity sends an indication message to a PCEF (PGW) anchored by the IP flow that needs to be moved and/or terminated;
- PGW PCEF
- the indication information includes an IP flow mobility trigger message and/or an IP flow termination message, where the IP flow mobility trigger message carries information about the IP flow to be moved and corresponding target access information (target access technology and/or Target access network), the IP flow termination message carries information of the IP flow that needs to be terminated.
- the IP flow mobility trigger message carries information about the IP flow to be moved and corresponding target access information (target access technology and/or Target access network)
- the IP flow termination message carries information of the IP flow that needs to be terminated.
- Step 84 end.
- the PCRF entity may perform IP flow mobility decision for each user equipment served by the PCRF entity, or may perform IP flow mobility decision only for some user equipments served by the PCRF entity, or may only perform some Specific user equipment makes IP flow mobility decisions.
- Method 2 When receiving an internal trigger or an external trigger, the PCRF entity performs an IP flow mobility decision on the IP flow of a user equipment, where the external trigger is a trigger message sent by the AF entity or the PCEF entity; specifically:
- the PCRF entity determines that the parameter information of the existing IP flow of the user equipment served by itself changes (ie, internal triggering, If the QoS requirement changes, or the subscription information changes, or the trigger message sent by the AF entity or the PCEF entity is received, the trigger message is used to trigger the existing IP flow of the user equipment or the IP of the new IP flow.
- Flow mobility decision see the 3GPP TS 23.203 protocol for details;
- the PCRF entity determines the resource information of the access network currently accessed by the user equipment from the obtained resource information of the access network;
- the PCRF entity determines, according to the resource information of the access network that the user equipment is currently accessing, whether the existing IP flow of the user equipment needs to be moved or terminates the transmission, or the PCRF entity determines according to the resource information of the access network currently accessed by the user equipment. Access technology and/or access network for transmitting new IP flows of user equipment.
- the PCRF entity will use information for identifying the IP flow that needs to be moved (such as a packet filter corresponding to the IP flow) and the IP that needs to be moved.
- the target access network corresponding to the flow is notified to the PCEF entity;
- the PCRF entity notifies the PCEF entity of the information identifying the IP flow that needs to terminate the transmission.
- the trigger message sent by the AF entity or the PCEF entity to the PCRF entity carries:
- Information for identifying an existing IP flow of the user equipment such as a packet filter of the existing IP flow
- parameter information of the existing IP flow update such as updated QoS requirements
- the trigger message sent by the AF entity or the PCEF entity to the PCRF entity carries:
- Information for identifying a new IP flow of the user equipment (such as a packet filter of the existing IP flow) and parameter information of the added IP flow.
- the triggering message sent by the AF entity to the PCRF entity also carries the IP address of the user equipment if the IP stream mobility decision of the new IP stream of the user equipment is triggered by the AF entity.
- Mode B The PCRF entity obtains the resource information of the access network currently accessed by the user equipment from the ANRME when the IP flow mobility decision is required for a user equipment;
- the PCRF entity determines that the parameter information of the existing IP flow of the user equipment served by the user changes (ie, internal triggering, such as a change in QoS requirements, or changes in subscription information, etc.), or receives a trigger sent by the AF entity or the PCEF entity. After the message is sent to the ANRME, the resource information of the access network to which the user equipment is currently connected is obtained.
- internal triggering such as a change in QoS requirements, or changes in subscription information, etc.
- the trigger message is used to trigger the IP flow mobility decision of the existing IP flow of the user equipment or the newly added IP flow. For details, refer to the 3GPP TS 23.203 protocol.
- the trigger message sent by the AF entity or the PCEF entity to the PCRF entity carries: Information for identifying an existing IP flow of the user equipment (such as a packet filter of the existing IP flow) and parameter information of the existing IP flow update (such as updated QoS requirements);
- the trigger message sent by the AF entity or the PCEF entity to the PCRF entity carries:
- Information for identifying a new IP flow of the user equipment (such as a packet filter of the existing IP flow) and parameter information of the added IP flow.
- the PCRF entity determines the identifier of the access network that the user equipment currently accesses according to the context information of the user equipment that is saved by the user; and the PCRF entity sends the current access to the user equipment to the ANRME. Accessing the identification information of the identifier of the network to obtain resource information of the access network currently accessed by the user equipment;
- the PCRF entity determines the identifier of the access network currently accessed by the user equipment according to the information carried in the trigger message sent by the AF entity or the PCEF entity, or the PCRF according to the context information of the user equipment saved by the PCRF; And the PCRF entity sends, to the A RME, the request information that carries the identifier of the access network that the user equipment is currently accessing, to obtain the resource information of the access network that the user equipment is currently accessing.
- the PCRF entity performs IP flow mobility decision on the user equipment according to the resource information of the access network that the user equipment is currently accessing, which includes:
- the PCRF entity determines whether the existing IP flow of the user equipment needs to be moved or terminates according to the resource information of the access network that the user equipment is currently accessing, or the PCRF entity according to the resource of the access network that the user equipment currently accesses. Information, determining access technology and/or access network for transmitting new IP flows of the user equipment.
- the PCRF entity itself determines that the parameter information of the existing IP flow of the user equipment changes, or the AF entity or the PCEF entity triggers the existing IP flow of the user equipment by using a trigger message.
- the IP flow mobility decision the PCRF entity determines, according to the resource information of the access network that the user equipment is currently accessing, whether the existing IP flow of the user equipment needs to be moved or terminated.
- the PCRF entity will use information for identifying the existing IP flow (such as a packet filter corresponding to the IP flow) and the existing IP flow.
- the target access network is notified to the PCEF entity; if the result of the judgment is that the existing IP flow needs to terminate the transmission, in step 62, the PCRF entity notifies the PCEF entity of the information for identifying the existing IP flow; otherwise, the end Secondary IP flow mobility decision.
- the PCRF entity is configured according to the resource information of the access network currently accessed by the user equipment. Determining an access technology and/or an access network for transmitting a new IP flow of the user equipment;
- the PCRF entity notifies the determined access technology and/or the access network that transmits the newly added IP stream to the PCEF entity anchored by the new IP stream.
- Step 91 The PCRF entity receives an external or internal trigger, and the external trigger includes a trigger message from the AF or PCEF, and the internal trigger is internally determined by the PCRF.
- the specific triggering process refer to the 3GPP TS 23.203 protocol.
- Step 92 The PCRF entity obtains the identifier of the access network currently accessed by the UE from the saved UE context or the trigger message, and requests the A RME to request the resource information corresponding to the identifier of each access network that the UE currently accesses.
- step 93a After obtaining the resource information, if step 91 is triggered by the UE having an IP flow, step 93a is performed;
- Step 93a The PCRF entity determines, according to the obtained resource information of the access network, whether the current IP flow needs to be moved or terminated.
- step 94 If yes, go to step 94;
- Step 93b The PCRF entity selects an access technology and/or an access network for the requested new IP flow according to the obtained access network resource information.
- Step 94 The PCRF entity sends the indication information to the PCEF entity anchored by the triggered IP flow.
- the indication information is
- the IP flow mobility trigger message carries the information of the existing IP flow and the corresponding target access information (target access technology and/or target access network);
- the indication message is a termination message, and the IP flow termination message carries the information of the existing IP flow;
- the indication information carries the information of the newly added IP flow and the access technology and/or access network selected for the same.
- Embodiment 1 the ANRME actively reports the resource information of each access network stored by the UE, and the UE accesses the core network through the LTE eNB and the WLAN AP, and the identifiers of the corresponding access networks are respectively: CGI_1, AP I Both can uniquely identify the LTE cell and the WLAN AP.
- IP stream 1. IP stream 2 is transmitted through the eNB, and IP stream 3 is transmitted through the WLAN AP.
- the PCRF determines whether the IP flow is to be triggered. The process is as shown in Figure 10, including:
- Step 101 The UE accesses the EPC through the eNB and the WLAN AP, respectively.
- the UE reports the accessed cell identifier CGI_1 and the WLAN AP identifier AP_1 to the PGW, and the PGW reports the information to the PCRF entity, and the PCRF entity stores the identifier of the access network and the IP flow information transmitted through the UE.
- Step 102 The ANRME reports the resource information of the access network to the PCRF entity, including CGI_1 and AP_1.
- the resource information of the identified network is as follows:
- the QCI packet loss rate of AP I for IP stream 2 is 1 ( ⁇ 3 .
- Step 103 The PCRF entity performs policy judgment (that is, IP flow mobility decision); specifically:
- the PCRF entity can learn the resource information of the UE currently accessing the network according to the resource information of the access network obtained in step 101 and the UE context information saved therein.
- the PCRF entity can determine the CGI 1 according to the QoS requirements required for the IP flow.
- the identified cell is no longer suitable for transmitting IP stream 2, and the WLAN AP identified by AP_1 can transmit IP stream.
- Step 104 The PCRF entity sends an IP-CAN session modification message to the PGW anchored by the IP stream 2, where the IP-CAN session tampering message includes a packet filter for IP flow2 and a target access
- the target access indicates that the IP flow 2 should be transmitted using the WLAN access.
- the target access is the WLAN.
- the PCRF entity requests the ANRME to access the resource information of the network, and the preset condition of the embodiment is different from that in the first embodiment in that: the PCRF entity is triggered by the AF entity.
- the resource information of the access network is requested to the A RME.
- the AF entity sends the new IP flow information to the PCRF entity.
- the PCRF entity obtains the resource information of the access network triggered by the trigger message sent by the AF entity, and determines the access technology that should be selected for the new IP flow.
- Figure 11 including:
- Step 111 The UE accesses the EPC through e B and the WLAN AP respectively.
- the UE reports the accessed cell identifier CGI_1 and the WLAN AP identifier AP_1 to the PGW, and the PGW reports the information to the PCRF entity, and the PCRF entity stores the identifier of the access network and the IP flow information transmitted through the UE.
- Step 112a The AF entity sends application or service information to the PCRF entity, where the QoS requirement of the IP stream 4 (ie, the new IP stream) and the UE IP address are included.
- Step 112b the PCRF entity returns a response.
- Step 113 The PCRF obtains the resource information of the access network that the UE currently accesses to the ANRME. Specifically, the PCRF entity can find the corresponding UE context information according to the UE IP address received in step 111, and further learns
- the identifier of the access network that the UE currently accesses; the PCRF entity uses the identifier to obtain the resource information of the corresponding access network from the A RME, and the obtained resource information is as follows:
- CGI 1 provides a delay of 100 ms for the QCI corresponding to IP stream 4.
- the delay provided by AP I for the QCI corresponding to IP flow 4 is 200 ms.
- Step 114 The PCRF entity performs policy judgment (that is, IP flow mobility decision); specifically:
- the PCRF entity determines that the IP flow should be transmitted using the eNB based on the subscription information and the QoS requirements of the IP flow 4 obtained in step 112a.
- Step 115 The PCRF entity sends an IP-CAN session modification message to the PGW anchored by the IP stream 4, where the
- IP packet 4 corresponding packet filter and target access indication (E-UTRAN), indicating that IP stream 4 should use E-UTRAN Access transmission.
- E-UTRAN packet filter and target access indication
- the PCRF entity requests the A RME to access the resource information of the network, and the preset condition of the embodiment is different from that in the first embodiment: the PCRF entity is triggered in the PCEF entity.
- the resource information of the access network is requested from the AKRME.
- the PCEF entity sends the QoS requirement of the existing IP stream 3 update to the PCRF entity (the GBR is increased from 2M to 5M), and the PCRF entity obtains the resource information of the access network triggered by the trigger message sent by the PCEF entity, and It is judged whether or not the IP stream 3 is to be moved.
- the process is shown in Figure 12, including:
- Step 121 The UE accesses the EPC through the eNB and the WL AN AP respectively.
- the UE reports the accessed cell identifier CGI_1 and the WLAN AP identifier AP_1 to the PGW, and the PGW reports the information to the PCRF entity, and the PCRF entity stores the identifier of the access network and the IP flow information transmitted through the UE.
- the core network control node sends a bearer resource command to the PGW, where the bearer resource command includes the foregoing information.
- Step 123 The PCEF entity sends an IP-CAN session modification indication message to the PCRF entity under the trigger of step 122, where the IP-CAN session modification indication message includes the packet filter of the IP stream 3 and the updated QoS requirement.
- Step 124 The PCRF entity obtains resource information of the corresponding access network from the ANRME according to the identifier of the access network in the UE context information, which is specifically:
- the load of AP I has also reached 75%.
- Step 125 The PCRF entity performs policy judgment (that is, IP flow mobility decision); specifically:
- the PCRF entity determines that the access network currently accessed by the UE cannot meet the QoS requirement of the IP stream 3 update, and decides to terminate the transmission of the IP stream 3.
- Step 126 The PCRF entity returns an IP-CAN session modification response to the PCEF entity anchored by the IP stream 3, where the IP-CAN session modification response includes a Termination of IP flow3.
- the above method processing flow can be implemented by a software program, which can be stored in a storage medium shield, and when the stored software program is called, the above method steps are performed.
- a PCRF entity is further provided in the embodiment of the present invention.
- the principle of solving the problem by the PCRF entity is similar to the method for implementing IP flow mobility in the multiple access system. Therefore, the implementation of the PCRF entity may be referred to. The implementation of the method, the repetition will not be repeated.
- the PCRF entity provided by the embodiment of the present invention includes:
- the decision module 131 is configured to perform IP flow mobility decision on the user equipment based on the obtained resource information of the access network currently accessed by the user equipment;
- the notification module 132 is configured to notify the PCEF entity of the result of the IP flow mobility decision.
- the PCRF entity further includes:
- the obtaining module 133 is configured to obtain resource information of the access network from the ANRME.
- the resource information of the 3GPP access network and the resource information of the non-3GPP access network are stored in the ANRME, and the resource information of each access network stored in the ANRME is identified by the identifier of the access network as a unique key.
- the obtaining module 133 is specifically configured to:
- the obtaining module 133 is specifically configured to:
- the preferred acquisition mode as a preferred processing mode, the decision module 131 is specifically configured to:
- the obtaining module 133 After receiving the resource information of the access network sent by the A RME, the obtaining module 133 determines the resource information of the access network that the user equipment that the user equipment is currently accessing, and the resource information of the access network that the user equipment currently accesses. And determining whether the IP stream currently transmitted by the user equipment needs to be moved or terminated.
- the preferred acquisition mode as another preferred processing manner, the decision module 131 is specifically configured to:
- the parameter information of the existing IP flow of the user equipment of the user service is changed, or the trigger message sent by the application function AF entity or the PCEF entity is received; and the resource information of the access network that has been obtained by the acquisition module is determined.
- the access information of the incoming access network determines the access technology and/or the access network for transmitting the new IP flow of the user equipment; wherein the trigger message carries the information of the existing IP flow used to identify the user equipment and The parameter information of the existing IP flow is updated; or the trigger message carries information for identifying a new IP flow of the user equipment and parameter information of the new IP flow.
- the obtaining module 133 is specifically configured to:
- the resource information of the access network to which the user equipment is currently connected is obtained from the ANRME;
- the trigger message carries the information about the existing IP flow of the user equipment and the parameter information of the existing IP flow update.
- the trigger message carries the information about the new IP flow used to identify the user equipment. Parameter information of this new IP flow.
- the obtaining module 133 is specifically configured to:
- the information carried in the network determines the identifier of the access network that the user equipment is currently accessing; and sends the request information of the identifier of the access network that the user equipment currently accesses to the ANRME to obtain the access network that the user equipment currently accesses. Resource information.
- the decision module 131 is specifically configured to:
- the resource information of the network is input, and the access technology and/or access network for transmitting the new IP stream of the user equipment is determined.
- the PCRF entity may be deployed independently of the ANRME; or, the PCRF entity may be deployed in conjunction with the A RME.
- the acquisition module 133 of the PCRF entity communicates with the ANRME through the defined standardized interface; if the PCRF entity is deployed with the A RME, the acquisition module 133 and the A RME of the PCRF entity Communication takes place via an internal interface.
- an embodiment of the present invention provides an access network resource management entity (ANRME), including:
- the storage module 141 is configured to store and maintain resource information of the 3GPP access network and resource information of the non-3GPP access network, where the resource information of each access network stored by the storage module 141 is identified by the access network. Is the only keyword;
- the communication module 142 is configured to provide resource information of the access network to the PCRF entity.
- the communication module 142 is specifically configured to:
- the resource information of the access network corresponding to the identifier carried by the request information is sent to the PCRF entity.
- the communication module 142 actively sends the resource information of the access network to the PCRF entity, and specifically includes: sending the resource information of all the access networks stored by the storage module 141 to the PCRF entity according to the set period; and/or,
- the storage module 141 updates the stored resource information of the access network
- the updated resource information of the access network is sent to the PCRF entity.
- the PCRF entity may be deployed independently of the ANRME; or, the PCRF entity may be deployed in conjunction with the AKRME.
- the communication module 142 communicates with the PCRF through the defined standardized interface; If the ANRME is deployed in conjunction with the PCRF entity, the communication module 142 communicates with the PCRF entity via the internal interface.
- the PCRF entity includes a transceiver, at least one processor coupled to the transceiver, and a memory coupled to the transceiver and the at least one processor, respectively, wherein:
- the processor is configured to perform IP flow mobility decision on the user equipment based on the acquired resource information of the access network currently accessed by the user equipment; and notify the PCEF entity of the result of the IP flow mobility decision by using the transceiver .
- the transceiver is further configured to acquire resource information of the access network from the ANRME, where the ANRME stores resource information of the 3GPP access network and resource information of the non-3GPP access network, where the ANRME is in the ANRME.
- the stored resource information of each access network is identified by the identifier of the access network as a unique key.
- the memory is configured to store the resource information of the transceiver to obtain the access network from the ANRME.
- the transceiver is configured to: receive resource information of an access network that is actively sent by the ANRME; or send an acquisition request to the ANRME, where the request is used to request to obtain all accesses of the ANRME storage. Resource information of the network.
- the transceiver is configured to:
- the processor is configured to: after the transceiver receives the resource information of the access network sent by the ANRME, determine that the user equipment of the user service is currently connected, according to the foregoing preferred method.
- the resource information of the incoming access network and determining whether the existing IP flow of the user equipment needs to be moved or terminated according to the resource information of the access network currently accessed by the user equipment.
- the processor is configured to be specifically used to:
- the transceiver receives the trigger message sent by the application function AF entity or the PCEF entity; from the resource information of the access network stored in the memory, Determining resource information of the access network currently accessed by the user equipment; and determining, according to resource information of the access network currently accessed by the user equipment, whether the existing IP flow of the user equipment needs to be moved or terminated, or according to the user equipment
- the resource information of the currently accessed access network determines an access technology and/or an access network for transmitting a new IP flow of the user equipment;
- the trigger message carries the information about the existing IP flow of the user equipment and the parameter information of the existing IP flow update.
- the trigger message carries a new IP flow for identifying the user equipment. Information and parameter information of the newly added IP stream.
- the processor is configured to: change the parameter information of the existing IP flow of the user equipment that is determined to be served by the user, or the transceiver receives the trigger message sent by the AF entity or the PCEF entity. Afterwards, the triggering transceiver obtains, from the ANRME, resource information of the access network to which the user equipment is currently connected;
- the trigger message carries the information about the existing IP flow of the user equipment and the parameter information of the existing IP flow update.
- the trigger message carries a new IP flow for identifying the user equipment. Information and parameter information of the newly added IP stream.
- the processor is configured to determine, according to the context information of the user equipment that is saved by itself, or the information carried in the trigger message sent by the AF entity or the PCEF entity, to determine the access network currently accessed by the user equipment. And the triggering device sends the request information of the access network that the user equipment currently accesses to the A RME to obtain the resource information of the access network that the user equipment currently accesses.
- the processor is configured to: determine, according to the resource information of the access network currently accessed by the user equipment in the memory, whether the existing IP flow of the user equipment needs to be moved or terminated according to the foregoing second preferred acquisition manner. Or, according to the obtained resource information of the access network currently accessed by the user equipment, determine an access technology and/or an access network for transmitting a new IP flow of the user equipment.
- the PCRF entity may be deployed independently of the ANRME; or, the PCRF entity may be deployed in conjunction with the A RME.
- the transceiver of the PCRF entity communicates with the AKRME through a defined standardized interface; if the PCRF entity and the ANRME are deployed together, the transceiver of the PCRF entity passes through the AKRME.
- the internal interface communicates.
- the ANRME entity includes a transceiver, at least one processor coupled to the transceiver, and a memory coupled to the transceiver and the at least one processor, respectively, wherein:
- the memory is configured to store resource information of the 3GPP access network and resource information of the non-3GPP access network, where the resource information of each access network stored in the memory is identified by the identifier of the access network as a unique key
- the processor is configured to maintain resource information of each access network stored in the memory
- the transceiver is configured to provide resource information of the access network to the PCRF entity.
- the transceiver is configured to specifically:
- the resource information of the access network corresponding to the identifier carried by the request information is sent to the PCRF entity.
- the transceiver actively sends the resource information of the access network to the PCRF entity, which specifically includes: Sending resource information of all access networks stored in the memory to the PCRF entity according to a set period; and/or,
- the updated resource information of the access network is sent to the PCRF entity.
- the PCRF entity may be deployed independently of the ANRME; or, the PCRF entity may be deployed in conjunction with the A RME.
- the transceiver is configured to communicate with the PCRF through the defined standardized interface
- the transceiver is configured to communicate with the PCRF entity via the internal interface.
- embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
- computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
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Abstract
本发明公开了一种多接入系统中实现因特网协议(IP)流移动性的方法和装置,能够更有效地对各接入网络的有限资源进行调度和使用,其中该方法包括以下步骤:策略和计费规则功能(PCRF)实体基于获取到的终端当前接入的接入网络的资源信息,对终端进行IP流移动性决策(61);PCRF实体将IP流移动性决策的结果通知给策略和计费执行功能(PCEF)实体(62)。本发明实施例中,由于PCRF实体结合了用户设备当前接入的接入网络的资源信息以及IP流的服务质量(QoS)需求,以调整用户设备的IP流在该用户设备当前接入的各接入网络中的分布,从而能够更有效地对各接入网络的有限资源进行调度和使用。
Description
一种多接入系统中实现 IP流移动性的方法和装置 本申请要求在 2013年 8月 6日提交中国专利局、 申请号为 201310339782.7、 发明名称 为 "一种多接入系统中实现 I P流移动性的方法和装置"的中国专利申请的优先权, 其全部内 容通过引用结合在本申请中。 技术领域
本发明涉及通信技术领域, 特别涉及一种多接入系统中实现因特网协议 ( Internet Protocol, IP ) 流移动性的方法和装置。 背景技术
1 ) 多接入和 IP流移动性
多接入技术使得用户设备 ( User Equipment, UE )可以同时通过不同接入系统接入演 进分组核心网 ( Evolved Packet Core , EPC ) , 而流移动性技术使得用户设备可以在移动性、 网络拥塞等场景下动态地将自身当前承载传输的一个或多个 IP 流在不同接入系统之间进 行无缝的切换。 IP流移动性(IP Flow Mobility, IFOM )技术旨在研究多接入场景下分组 数据网络( Packet Data Network, PDN )连接和 IP流的切换、 IP流的迁移以及 IP流的无缝 分流技术。
例如,参见图 1所示,图中用户设备处于第三代合作伙伴计划( 3rf Generation Partnership Proj ect , 3 GPP )和非 3 GPP ( Non-3 GPP ) 的共同覆盖下, 根据运营商策略、 用户偏好和业 务特性等,将 IP语音业务( Voice over IP, VoIP )和会话视频流放到 3GPP接入( 3GPP access ) 路由, 以及将 Web浏览、 文件传输协议(File Transport Protocol, FTP )下载和非会话视频 流放到非 3GPP接入( Non-3GPP access )路由。 随后, 由于非 3GPP接入拥塞, 而导致 Web 浏览和非会话视频流不能保持业务盾量需求, 因此, 将上述 IP流(即 Web浏览和非会话 视频流)移动到 3GPP接入路由, 具体参见图 2所示。
2 ) IP流移动性方案
目前, 3GPP网络通过接入网络发现和选择 ( Access Network Discovery and Selection
Function, AKDSF )策略指导用户设备 ( User Equipment, UE ) 的接入技术和接入网络选 择。 对于支持 IFOM的 UE, ANDSF策略中包含 IP流所对应的按优先级排列的接入技术 和接入网络(可选), 其中 IP流使用五元组即 (源 IP地址、 目的 IP地址、 源 IP端口号、 目的 IP端口号、 IP层之上的协议标识)来限定。 如: 对于目的端口号为 80的 IP流, 优先 的接入技术为: WLAN> E-UTRAN, 其中, 无线局域网 ( Wireless Local Access Network,
WLAN )需要满足服务集标识( Service Set Identification, SSID ) = myOperator; 设 UE当 前传输的所有 IP流都通过长期演进 ( Long Term Evolution, LTE )传输, 当 UE能够接入
到 SSID = myOperator的 WLAN时, 应当将上述 IP流移动至 WLAN传输。
当 UE同一个分组数据网络( Packet Data Network, PDN )连接的 IP流在多种接入技 术之间进行移动时, 仍需要保持锚定到同一个分组数据网络网关 (PDN Gateway, PGW ) 上以维持连续性。 为了实现上述锚定, UE和 PGW之间需要交互 UE的 IP流的目标接入 系统信息, 目前有 UE触发和网络触发两种方式:
a ) UE触发。 该方式通过对 UE与 PGW之间的直接或间接信令进行扩展以携带 IP流 移动性规则 (包括规则标识、 路由过滤器(用于描述 IP流)、 优先级、 路由地址(对应接 入系统信息)) 实现交互。 当 UE与网络之间使用基于网络的移动性管理协议代理移动 IP ( Proxy Mobile IP, PMIP )且 WLAN接入网络可信时, IP流移动性过程的一种场景如下 参见图 3所示, 包括如下步骤:
步骤 31、 UE同时通过 3GPP接入和非 3GPP接入连接到核心网, 该 UE的一部分 IP 流通过 3GPP接入路由, 其余 IP流通过非 3GPP接入络路由;
步骤 32、 UE向非 3GPP接入发送一个 IP流移动性触发信令,该信令包含 IP流移动性 路由规则, 该路由规则要求将特定 IP流通过非 3GPP接入路由。 具体该规则如何实现由 UE与非 3GPP接入间的协议决定。
步骤 33、 非 3GPP接入向 PGW发送代理绑定更新 ( Proxy Binding Update, PBU ) 消 息, 该消息包含 UE提供的 IP流移动性路由规则, 具体的, 该规则可以通过协议配置选项 ( Protocol Configuration Option, PCO )携带, 也可以通过扩展 PMIPv6信令的方式实现。
步骤 34、 PGW向策略和计费规则功能( Policy and Charging Rules Function, PCRF ) 实体发送 IP连接接入网络( IP-Connectivity Access Network, IP-CAN )会话修改消息, 该 消息携带 UE的 IP流以及其对应的接入系统的映射关系的改变;
步骤 35、 PCRF实体保存更新后的 IP流及其接入系统的映射关系, 并向非 3 GPP接入 发送网关控制会话( GW control session )和服务盾量( Quality of Service, QoS )规则提供 ( QoS rules provision ) 消息;
步骤 36、 PGW向非 3GPP接入返回代理绑定应答( Proxy Binding Acknowledgement, PBA ) 消息, 表明该 IP流移动性请求被接受;
步骤 37、 非 3GPP接入向 UE返回 IP流移动性响应 ( IP flow mobility ack ) 消息, 表 明该 IP流移动性请求被接受。
b )、 网络触发。 该方式中, IP流移动性由 PCRF实体触发, 具体的: PCRF实体和策 略和计费执行功能( Policy and Charging Enforcement Function, PCEF ) 需要保存并维护每 个 IP流( per IP流 )粒度的接入系统信息。 PCRF实体决定每个 IP流应该通过哪个接入系 统路由, 并通过策略和计费控制( Policy and Charging Control, PCC )规则将上述信息发送 给 PCEF。 基于上述方案的 IP流移动性的实现过程参见图 4所示, 包括如下步骤:
步骤 41、 UE同时通过 3GPP接入和非 3GPP接入连接到核心网;
步骤 42、PCRF实体收到新业务的信息,进行策略决策并决定将相关 IP流通过非 3GPP 接入路由;
步骤 43、 PCRF实体向非 3GPP接入发起网关控制和 QoS规则提供过程, 向非 3GPP 接入下发 QoS规则, 该 QoS规则包含 IP流移动性路由规则;
步骤 44、 非 3GPP接入执行 QoS规则, 如预留资源等;
步骤 45、 非 3GPP接入在执行 QoS规则之后, 向 PCRF实体返回响应;
步骤 46、 PCRF实体向 PGW发起 PCC规则提供过程, 并向 PGW指示相关 IP流应当 通过非 3GPP接入路由。
3 )接入系统资源与 PCC架构;
PCC架构旨在提供一种与接入技术无关的策略和计费控制方法, 适用于 3GPP接入如 通用移动通信系统陆地无线接入网 (UMTS Terrestrial Radio Access Network, UTRAN; Universal Mobile Telecommunications System, UMTS )、 演进通用移动通信系统陆地无线接 入网 (Evolved UTRAN, E-UTRAN )、 以及非 3GPP 接入, 包括全球^ 波接入互操作 ( Worldwide interoperability for Microwave Access, WiMAX )、 WLAN等。 PCC架构包括 PCRF, PCEF、应用功能(Application Function, AF )等节点, AF向发送业务的 QoS需求, 由 PCRF实体进行决策并形成 PCC rule ( PCC规则)下发给 PCEF, PCEF执行该规则, 将 数据流级 QoS映射为承载级 QoS。 核心网控制节点将该 QoS需求下发给基站, 由基站根 据设定的调度算法进行资源的调度。 对于非 3GPP接入技术接入核心网的场景, 需要非 3GPP接入节点具有根据 PCRF实体下发的 QoS需求进行保障的机制。 有 AF情形下 PCC 架构实现 QoS策略和计费控制的基本原理如图 5所示。
如前所述, 目前无线通信网络已发展成为一个包含多种接入技术和接入网络的异构通 信系统。 通信系统的关键因素是资源的分配与利用。 传统技术中, 各种无线接入网络的资 源调度是单独进行的, 如 e B与 WLAN接入点 (Access Point, AP )之间无法进行资源 协调。 然而, 对于异构通信系统, 单独对每个接入网络进行资源调度不利于网络之间资源 的最优化配置。 因此,集中地进行资源调度和控制对于异构通信系统而言具有重要的意义。 目前, 优化的资源调度方法主要有以下几种:
a)基于 UE。这类方法的核心思想是 UE扫描周围网络(包括蜂窝网和 WL AN网络等), 获得其相关信息如数据速率、 QoS能力、 信号盾量等, 结合策略信息进行接入网络选择。
b)基于网络。 这类方法的核心思想是由核心网获取接入网络的资源信息, 进而调整接 入网络选择策略或对 UE的业务请求进行准入控制。
然而, 现有实现 IP流移动性的方案中, 都是基于半静态的 ANDSF策略, 选择接入技 术和接入网络的, 由于都未考虑接入网络的实时资源使用情况, 容易导致接入网络出现拥
塞现象, 不利于对接入网络有限的资源进行统一、 有效地调度和使用。 发明内容
本发明实施例提供了一种多接入系统中实现 IP流移动性的方法和装置,能够更有效地 对接入网络有限的资源进行调度和使用。
本发明实施例提供了一种多接入系统中实现 IP流移动性的方法, 该方法包括:
PCRF 实体基于获取到的用户设备当前接入的接入网络的资源信息, 对所述用户设备 进行 IP流移动性决策, 得到 IP流移动性决策的结果;
所述 PCRF实体将所述 IP流移动性决策的结果通知给 PCEF实体。
在实施中, 所述 PCRF实体根据以下方式获取接入网络的资源信息:
所述 PCRF实体从接入网络资源管理实体 ANRME处获取接入网络的资源信息; 其中, 所述 ANRME中存储有第三代合作伙伴计划 3GPP接入网络的资源信息、 以及 非 3GPP接入网络的资源信息, 所述 ANRME中所存储的每个接入网络的资源信息以该接 入网络的标识为唯一关键字。
作为一种优选获取方式, 所述 PCRF 实体从所述 ANRME处获取接入网络的资源信 息, 具体包括:
所述 PCRF实体接收所述 ANRME主动发送的接入网络的资源信息; 或者, 所述 PCRF实体主动向所述 ANRME发送获取请求, 所述获取请求用于请求获取所述 ANRME存储的所有接入网络的资源信息。
基于上述第一种优选获取方式, 所述 PCRF实体接收所述 ANRME主动发送的接入网 络的资源信息, 具体包括:
所述 PCRF实体接收所述 ANRME按照设定的周期发送的所述 ANRME存储的所有接 入网络的资源信息; 和 /或,
所述 PCRF实体接收所述 ANRME发送的更新后的接入网络的资源信息, 其中, 所述 ANRME在更新了自身存储的接入网络的资源信息后, 将更新后的接入网络的资源信息发 送给所述 PCRF实体。
基于上述第一种优选获取方式, 作为一种优选处理方式, 所述 PCRF实体根据基于获 取到的用户设备当前接入的接入网络的资源信息, 对所述用户设备进行 IP流移动性决策, 具体包括:
所述 PCRF 实体在接收到所述 ANRME发送的接入网络的资源信息后, 确定出所述 PCRF实体服务的用户设备当前接入的接入网络的资源信息;
所述 PCRF实体根据所述用户设备当前接入的接入网络的资源信息, 判断所述用户设 备的已有 IP流是否需要移动或终止传输。
基于上述第一种优选获取方式, 作为另一种优选处理方式, 所述 PCRF实体基于获取 到的接入网络的资源信息, 对所述用户设备进行 IP流移动性决策, 具体包括:
所述 PCRF实体确定自身服务的用户设备的已有 IP流的参数信息发生变化, 或者,接 收到应用功能 AF实体或所述 PCEF实体发送的触发消息;
所述 PCRF实体从已获取到的接入网络的资源信息中, 确定出所述用户设备当前接入 的接入网络的资源信息;
所述 PCRF实体根据所述用户设备当前接入的接入网络的资源信息, 判断所述用户设 备的已有 IP流是否需要移动或终止传输, 或者, 所述 PCRF实体根据所述用户设备当前接 入的接入网络的资源信息, 确定出传输所述用户设备的新增 IP流的接入技术和 /或接入网 络;
其中,所述触发消息中携带用于标识所述用户设备的已有 IP流的信息以及所述已有 IP 流更新的参数信息; 或者, 所述触发消息中携带用于标识所述用户设备的新增 IP流的信息 以及所述新增 IP流的参数信息。
作为另一种优选获取方式, 所述 PCRF实体从所述 ANRME处获取接入网络的资源信 息, 具体包括:
所述 PCRF实体在确定自身服务的用户设备的已有 IP流的参数信息发生变化, 或者, 接收到 AF实体或所述 PCEF实体发送的触发消息后, 向所述 ANRME获取所述用户设备 当前连接的接入网络的资源信息;
其中,所述触发消息中携带用于标识所述用户设备的已有 IP流的信息以及所述已有 IP 流更新的参数信息; 或者, 所述触发消息中携带用于标识所述用户设备的新增 IP流的信息 以及所述新增 IP流的参数信息。
具体的, 所述 PCRF实体向所述 ANRME获取所述用户设备当前连接的接入网络的资 源信息, 具体包括:
所述 PCRF实体根据自身保存的所述用户设备的上下文信息、 或者所述 AF实体或所 述 PCEF实体发送的触发消息中携带的信息, 确定所述用户设备当前接入的接入网络的标 识;
所述 PCRF实体向所述 ANRME发送携带所述用户设备当前接入的接入网络的标识的 请求信息, 以获取所述用户设备当前接入的接入网络的资源信息。
基于上述第二种优选获取方式, 所述 PCRF实体基于获取到的接入网络的资源信息, 对所述用户设备进行 IP流移动性决策, 具体包括:
所述 PCRF实体根据所述用户设备当前接入的接入网络的资源信息, 判断所述用户设 备的已有 IP流是否需要移动或终止传输, 或者, 所述 PCRF实体根据所述用户设备当前接 入的接入网络的资源信息, 确定出传输所述用户设备的新增 IP流的接入技术和 /或接入网
络。
本发明实施例中, 所述 PCRF实体与所述 ANRME可以独立部署, 也可以合设部署, 其巾:
若所述 PCRF实体与所述 A RME独立部署, 则所述 PCRF实体与所述 A RME之间 通过定义的标准化接口进行通信;
若所述 PCRF实体与所述 AKRME合设部署, 则所述 PCRF实体与所述 AKRME之间 通过内部接口进行通信。
本发明实施例中, 每个接入网络的资源信息包括所述接入网络的资源使用情况、 所述 接入网络可提供的服务盾量 QoS、 以及所述接入网络的回传链路速率中的至少一种信息; 其中, 所述接入网络的资源包括空口资源和回传资源。
本发明实施例提供的方法中, PCRF实体基于获取到的接入网络的资源信息, 进行 IP 流移动性决策,由于 PCRF实体结合了用户设备当前接入的接入网络的资源信息以及 IP流 的 QoS需求, 以调整用户设备的 IP流在该用户设备当前接入的各接入网络中的分布, 从 而能够更有效地对各接入网络的有限资源进行调度和使用, 进一步能够避免接入网络出现 拥塞的现象, 提高了用户的服务体验。
本发明实施例提供了一种 PCRF实体, 包括:
决策模块, 用于基于获取到的用户设备当前接入的接入网络的资源信息, 对所述用户 设备进行 IP流移动性决策, 得到 IP流移动性决策的结果;
通知模块, 用于将所述 IP流移动性决策的结果通知给 PCEF实体。
进一步, 所述 PCRF实体还包括:
获取模块, 用于从 A RME处获取接入网络的资源信息; 其中, 所述 ANRME中存储 有第三代合作伙伴计划 3GPP接入网络的资源信息、 以及非 3GPP接入网络的资源信息, 所述 ANRME中存储的每个接入网络的资源信息以该接入网络的标识为唯一关键字。
作为一种优选获取方式, 所述获取模块具体用于:
接收所述 ANRME主动发送的接入网络的资源信息; 或者,
主动向所述 ANRME发送获取请求,所述获取请求用于请求获取所述 ANRME存储的 所有接入网络的资源信息。
基于上述第一种优选获取方式, 所述获取模块具体用于:
接收所述 A RME按照设定的周期发送的所述 ANRME存储的所有接入网络的资源信 息; 和 /或,
接收所述 ANRME发送的更新后的接入网络的资源信息, 其中, 所述 ANRME在更新 了自身存储的接入网络的资源信息后, 将更新后的接入网络的资源信息发送给所述 PCRF 实体。
基于上述第一种优选获取方式, 作为一种优选处理方式, 所述决策模块具体用于: 在获取模块接收到所述 ANRME发送的接入网络的资源信息后, 确定出自身服务的用 户设备当前接入的接入网络的资源信息; 以及根据所述用户设备当前接入的接入网络的资 源信息, 判断所述用户设备的已有 IP流是否需要移动或终止传输。
基于上述第一种优选获取方式, 作为另一种优选处理方式, 所述决策模块具体用于: 确定自身服务的用户设备的已有 IP 流的参数信息发生变化, 或者, 接收到应用功能 AF实体或所述 PCEF实体发送的触发消息;从所述获取模块已获取到的接入网络的资源信 息中, 确定出所述用户设备当前接入的接入网络的资源信息; 以及根据所述用户设备当前 接入的接入网络的资源信息,判断所述用户设备的已有 IP流是否需要移动或终止传输,或 者, 根据所述用户设备当前接入的接入网络的资源信息, 确定出传输所述用户设备的新增
IP流的接入技术和 /或接入网络;
其中,所述触发消息中携带用于标识所述用户设备的已有 IP流的信息以及所述已有 IP 流更新的参数信息; 或者, 所述触发消息中携带用于标识所述用户设备的新增 IP流的信息 以及所述新增 IP流的参数信息。
作为另一种优选获取方式, 所述获取模块具体用于:
在确定自身服务的用户设备的已有 IP流的参数信息发生变化, 或者, 接收到 AF实体 或所述 PCEF实体发送的触发消息后, 向所述 ANRME获取所述用户设备当前连接的接入 网络的资源信息;
其中,所述触发消息中携带用于标识所述用户设备的已有 IP流的信息以及所述已有 IP 流更新的参数信息; 或者, 所述触发消息中携带用于标识所述用户设备的新增 IP流的信息 以及所述新增 IP流的参数信息。
具体的, 所述获取模块具体用于:
根据自身保存的所述用户设备的上下文信息、 或者所述 AF实体或所述 PCEF实体发 送的触发消息中携带的信息, 确定所述用户设备当前接入的接入网络的标识; 以及向所述 ANRME发送携带所述用户设备当前接入的接入网络的标识的请求信息, 以获取所述用户 设备当前接入的接入网络的资源信息。
基于上述第二种优选获取方式, 所述决策模块具体用于:
根据所述获取模块获取到的所述用户设备当前接入的接入网络的资源信息, 判断所述 用户设备的已有 IP流是否需要移动或终止传输,或者,根据所述获取模块获取到的所述用 户设备当前接入的接入网络的资源信息,确定出传输所述用户设备的新增 IP流的接入技术 和 /或接入网络。
本发明实施例中, 所述 PCRF实体与所述 ANRME可以独立部署, 也可以合设部署, 其巾:
若所述 PCRF实体与所述 ANRME独立部署, 则所述获取模块与所述 ANRME之间通 过定义的标准化接口进行通信;
若所述 PCRF实体与所述 ANRME合设部署, 则所述获取模块与所述 ANRME之间通 过内部接口进行通信。
本发明实施例提供了另一种 PCRF实体, 包括:
收发信机、 与该收发信机连接的至少一个处理器、 以及分别与收发信机和该至少一个 处理器连接的存储器, 其中:
处理器被配置用于基于获取到的用户设备当前接入的接入网络的资源信息, 对用户设 备进行 IP流移动性决策; 并通过收发信机将 IP流移动性决策的结果通知给 PCEF实体。
在实施中, 收发信机还被配置用于从 ANRME 处获取接入网络的资源信息; 其中, ANRME 中存储有 3GPP接入网络的资源信息、 以及非 3GPP接入网络的资源信息, 该 ANRME中所存储的每个接入网络的资源信息以该接入网络的标识为唯一关键字。
相应的, 存储器被配置用于存储收发信机从 ANRME处获取接入网络的资源信息。 作为一种优选获取方式, 收发信机被配置具体用于: 接收 ANRME主动发送的接入网 络的资源信息; 或者, 主动向 ANRME发送获取请求, 该获取请求用于请求获取 ANRME 存储的所有接入网络的资源信息。
该优选获取方式下, 收发信机被配置具体用于:
接收 ANRME按照设定的周期发送的 ANRME存储的所有接入网络的资源信息; 和 / 或, 接收 ANRME发送的更新后的接入网络的资源信息, 其中, ANRME在更新了自身存 储的接入网络的资源信息后, 将更新后的接入网络的资源信息发送给该 PCRF实体。
该优选获取方式, 作为一种优选处理方式, 处理器被配置具体用于:
在收发信机接收到 ANRME发送的接入网络的资源信息后, 确定出自身服务的用户设 备当前接入的接入网络的资源信息; 以及根据用户设备当前接入的接入网络的资源信息, 判断用户设备的已有 IP流是否需要移动或终止传输。
该优选获取方式, 作为另一种优选处理方式, 处理器被配置具体用于:
确定自身服务的用户设备的已有 IP流的参数信息发生变化,或者, 收发信机接收到应 用功能 AF实体或 PCEF实体发送的触发消息; 从存储器中所存储的接入网络的资源信息 中, 确定出用户设备当前接入的接入网络的资源信息; 以及根据用户设备当前接入的接入 网络的资源信息, 判断用户设备的已有 IP流是否需要移动或终止传输, 或者, 根据用户设 备当前接入的接入网络的资源信息, 确定出传输用户设备的新增 IP流的接入技术和 /或接 入网络;
其中,所述触发消息中携带用于标识所述用户设备的已有 IP流的信息以及所述已有 IP 流更新的参数信息; 或者, 所述触发消息中携带用于标识所述用户设备的新增 IP流的信息
以及所述新增 IP流的参数信息。
作为另一种优选获取方式, 处理器被配置具体用于: 在确定自身服务的用户设备的已 有 IP流的参数信息发生变化, 或者, 收发信机接收到 AF实体或 PCEF实体发送的触发消 息后, 触发收发信机向 ANRME获取用户设备当前连接的接入网络的资源信息;
其中,所述触发消息中携带用于标识所述用户设备的已有 IP流的信息以及所述已有 IP 流更新的参数信息; 或者, 所述触发消息中携带用于标识所述用户设备的新增 IP流的信息 以及所述新增 IP流的参数信息。
该优选获取方式下,处理器被配置具体用于:根据自身保存的用户设备的上下文信息、 或者 AF实体或 PCEF实体发送的触发消息中携带的信息, 确定用户设备当前接入的接入 网络的标识; 以及触发收发信机向 A RME发送携带用户设备当前接入的接入网络的标识 的请求信息, 以获取用户设备当前接入的接入网络的资源信息。
该优选获取方式, 处理器被配置具体用于: 根据存储器中所存储的用户设备当前接入 的接入网络的资源信息, 判断用户设备的已有 IP流是否需要移动或终止传输, 或者, 根据 获取到的用户设备当前接入的接入网络的资源信息,确定出传输用户设备的新增 IP流的接 入技术和 /或接入网络。
优选的, 本发明实施例中, PCRF实体可以与 ANRME独立部署; 或者, PCRF实体 可以与 A RME合设部署。
进一步, 若 PCRF实体与 ANRME独立部署, 则 PCRF实体的收发信机与 AKRME之 间通过定义的标准化接口进行通信; 若 PCRF实体与 ANRME合设部署, 则 PCRF实体的 收发信机与 AKRME之间通过内部接口进行通信。
本发明实施例提供的 PCRF实体基于获取到的接入网络的资源信息,进行 IP流移动性 决策, 由于 PCRF实体结合了接入网络的资源信息以及 IP流的 QoS需求, 以调整用户设 备的 IP流在该用户设备当前接入的各接入网络中的分布,从而能够更有效地对各接入网络 的有限资源进行调度和使用。
本发明实施例提供的 ANRME, 包括:
存储模块, 用于存储和维护 3GPP接入网络的资源信息以及非 3GPP接入网络的资源 信息, 其中, 所述存储模块所存储的每个接入网络的资源信息以该接入网络的标识为唯一 关键字;
通信模块, 用于向 PCRF实体提供接入网络的资源信息。
在实施中, 所述通信模块具体用于:
主动向所述 PCRF实体发送所述存储模块所存储的接入网络的资源信息; 或者, 在接收到所述 PCRF实体发送的获取请求后, 向所述 PCRF实体发送所述存储模块所 存储的所有接入网络的资源信息; 或者,
在接收到所述 PCRF实体发送的请求信息后, 向所述 PCRF实体发送所述请求信息携 带的标识对应的接入网络的资源信息。
进一步, 所述通信模块主动向所述 PCRF实体发送接入网络的资源信息具体包括: 按照设定的周期, 将所述存储模块所存储的所有接入网络的资源信息发送给所述
PCRF实体; 和 /或,
在所述存储模块更新了所存储的接入网络的资源信息后, 将更新后的接入网络的资源 信息发送给所述 PCRF实体。
本发明实施例中, PCRF实体可以与 ANRME独立部署,也可以与 A RME合设部署, 其巾:
若所述 ANRME与所述 PCRF实体独立部署, 则所述通信模块通过定义的标准化接口 与所述 PCRF进行通信;
若所述 ANRME 与所述 PCRF 实体合设部署, 则所述通信模块通过内部接口与所述 PCRF实体进行通信。
本发明实施例还提供了另一种 A RME实体, 包括:
收发信机、 与该收发信机连接的至少一个处理器、 以及分别与该收发信机和该至少一 个处理器连接的存储器, 其中:
存储器被配置用于存储 3GPP接入网络的资源信息以及非 3GPP接入网络的资源信息, 其中, 该存储器中所存储的每个接入网络的资源信息以该接入网络的标识为唯一关键字; 处理器被配置用于维护存储器中所存储的各接入网络的资源信息;
收发信机被配置用于向 PCRF实体提供接入网络的资源信息。
在实施中, 收发信机被配置具体用于:
主动向 PCRF实体发送存储器所存储的接入网络的资源信息; 或者,
在接收到 PCRF实体发送的获取请求后, 向 PCRF实体发送存储器所存储的所有接入 网络的资源信息; 或者,
在接收到 PCRF实体发送的请求信息后, 向 PCRF实体发送该请求信息携带的标识对 应的接入网络的资源信息。
进一步, 收发信机主动向 PCRF实体发送接入网络的资源信息, 具体包括: 按照设定的周期, 将存储器所存储的所有接入网络的资源信息发送给 PCRF实体; 和 / 或,
在存储器更新了所存储的接入网络的资源信息后, 将更新后的接入网络的资源信息发 送给 PCRF实体。
优选的, 本发明实施例中, PCRF实体可以与 ANRME独立部署; 或者, PCRF实体 可以与 A RME合设部署。
进一步, 若 ANRME与 PCRF实体独立部署, 则收发信机被配置通过定义的标准化接 口与 PCRF进行通信;
若 ANRME与 PCRF实体合设部署, 则收发信机被配置通过内部接口与 PCRF实体进 行通信。
本发明实施例提供的 ANRME能够向 PCRF实体提供所需的接入网络的资源信息, 以 使 PCRF实体在进行 IP流移动性决策时能够考虑用户设备当前接入的接入网络的资源信 息, 从而能够更有效地对各接入网络的有限资源进行调度和使用。 附图说明
图 1为背景技术中基于运营商策略在不同接入系统路由 IP流的示意图;
图 2为背景技术中网络拥塞触发的 IP流移动性的示意图;
图 3为背景技术中提供的 UE触发的 IP流移动性过程示意图;
图 4为背景技术中提供的网络触发的 IP流移动性过程示意图;
图 5为背景技术中提供的 PCC架构实现 QoS策略和计费控制的原理示意图; 图 6为本发明实施例提供的一种多接入系统中实现 IP流移动性的方法示意图; 图 7为本发明实施例提供的 A RME与 PCRF实体合设的网络架构示意图; 图 8为本发明实施例提供一种优选的处理过程示意图;
图 9为本发明实施例提供另一种优选的处理过程示意图;
图 10为本发明提供的实施例一的实现过程示意图;
图 11为本发明提供的实施例二的实现过程示意图;
图 12为本发明提供的实施例三的实现过程示意图;
图 13为本发明实施例提供的 PCRF实体的示意图;
图 14为本发明实施例提供的 A RME的示意图。 具体实施方式
本发明实施例的 PCRF实体基于获取到的用户设备当前接入的接入网络的资源信息, 对用户设备进行 IP流移动性决策,从而能够更有效地对各接入网络的有限资源进行调度和 使用。
下面结合说明书附图对本发明实施例作进一步详细描述。
参见图 6所示,本发明实施例提供的一种多接入系统中实现 IP流移动性的方法, 包括 以下步骤:
步骤 61、 PCRF实体基于获取到的用户设备当前接入的接入网络的资源信息, 对用户 设备进行 IP流移动性决策。
具体的, PCRF实体在对用户设备进行 IP流移动性决策时, 结合该用户设备当前接入 的接入网络的资源信息、 以及该用户设备的 IP流的 QoS需求, 对该用户设备进行 IP流移 动性决策。
本发明实施例中, 对用户设备进行的 IP流移动性决策包括对该用户设备的已有 IP流 (即该用户设备当前传输的 IP流)进行 IP流移动性决策、 以及对该用户设备的新增 IP流 进行 IP流移动性决策。
具体的, 对该用户设备的已有 IP流进行 IP流移动性决策包括判断该用户设备的已有 IP流是否需要进行移动或者终止传输; 对该用户设备的新增 IP流进行 IP流移动性决策包 括为该用户设备的新增 IP流选择合适的接入技术和 /或接入网络。
步骤 62、 PCRF实体将 IP流移动性决策的结果通知给 PCEF实体。
具体的, PCRF实体在完成 IP流移动性决策后, 将该 IP流移动性决策的结果通知给 PCEF实体, 其中, PCEF—般部署于 PGW中。
本发明实施例中, PCRF实体基于获取到的接入网络的资源信息, 进行 IP流移动性决 策, 由于 PCRF实体结合了用户设备当前接入的接入网络的资源信息以及 IP流的 QoS需 求, 以调整用户设备的 IP流在该用户设备当前接入的各接入网络中的分布,从而能够更有 效地对各接入网络的有限资源进行调度和使用, 进一步能够避免接入网络出现拥塞的现 象, 提高了用户的服务体验。
在实施中, PCRF实体根据以下方式获取接入网络的资源信息:
PCRF实体从接入网络资源管理实体 ( Access Network Resource Management Entity, ANRME )处获取接入网络的资源信息;
其中, ANRME用于对各接入网络的资源信息进行维护, 该 A RME中存储有 3GPP 接入网络的资源信息、 以及非 3GPP接入网络的资源信息, 该 ANRME所存储的每个接入 网络的资源信息以该接入网络的标识为唯一关键字。
在异构通信系统中, 新增的 ANRME 用于存储和维护各接入网络的资源信息, 该 ANRME中存储有 3GPP接入网络(如 e B、 NodeB、 家庭基站等) 的资源信息、 以及非 3GPP接入网络(如 WLAN、 WiMAX等)的资源信息,每个接入网络的资源信息在 AKRME 中以该接入网络的标识为唯一关键字进行存储; 进一步, 接入网络的标识根据接入网络类 型不同有所不同, 对于蜂窝网基站, 该接入网络的标识可以是小区全球标识; 对于 WLAN 接入, 该接入网络的标识可以是基本服务集标识(Basic Service Set ID, BSSID )、 同类扩 展服务集标识( Homogenous ESS identifier, HESSID; Extended Service Set, ESS )等。
本发明实施例中, ANRME中存储的每个接入网络的资源信息包括该接入网络的资源 使用情况 (如资源使用百分比)、 该接入网络可提供的 QoS、 以及该接入网络的回传 ( backhaul )链路速率中的至少一种信息; 其中, 每个接入网络的资源包括空口资源和回
传 (backhaul ) 资源。
本发明实施例中, A RME与 PCRF实体可以进行直接交互。 A RME与 PCRF实体 在部署时, 包括以下两种方式:
第一种方式、 AKRME可以作为网络中独立的功能实体部署,即 PCRF实体与 A RME 独立部署, 此时, PCRF实体与 ANRME之间通过定义的标准化接口进行通信;
第二种方式、 ANRME 与 PCRF 实体合设在一个增强的资源和策略管理功能块, 即 PCRF实体与 ANRME合设部署, 此时, PCRF实体与 AKRME之间通过内部接口进行通 信, 该部署方式参见图 7所示, 图中 ANRME与 PCRF实体合设在一个增强的资源和策略 管理功能块, 通过内部接口进行通信。
在实施中, PCRF实体从 ANRME处获取接入网络的资源信息, 具体包括以下两种方 式:
方式 A、 PCRF实体预先从 ANRME处获取到接入网络的资源信息, 并存储, 以在需 要进行 IP流移动性决策时, 基于已存储的接入网络的资源信息, 进行 IP流移动性决策。
在实施中, 方式 A进一步包括以下两种方式:
方式 Al、 PCRF实体接收 AKRME主动发送的接入网络的资源信息;
进一步, 方式 A1包括:
PCRF实体接收 A RME按照设定的周期发送的该 ANRME存储的所有接入网络的资 源信息; 和 /或,
PCRF实体接收 ANRME发送的更新后的接入网络的资源信息, 其中, 该 ANRME在 更新了自身存储的接入网络的资源信息后, 将更新后的接入网络的资源信息发送给 PCRF 实体。
方式 A2、 PCRF 实体主动向 ANRME发送获取请求, 该获取请求用于请求获取该 ANRME存储的所有接入网络的资源信息。
基于方式 A1与方式 A2, PCRF实体在接收到该 ANRME发送的接入网络的资源信息 后, 存储获取到的各接入网络的资源信息。
基于方式 A1与方式 A2, 步骤 61中, PCRF实体根据基于获取到的用户设备当前接入 的接入网络的资源信息, 对用户设备进行 IP流移动性决策, 具体包括以下两种处理方法: 方法一、 PCRF实体在接收到 ANRME发送的接入网络的资源信息后, 直接对服务的 用户设备进行 IP流移动性决策; 具体为:
PCRF实体在接收到 ANRME发送的接入网络的资源信息后, 确定出自身服务的用户 设备当前接入的接入网络的资源信息; 以及
PCRF 实体根据该用户设备当前接入的接入网络的资源信息, 判断该用户设备的已有 IP流是否需要移动或终止传输。
进一步, 若用户设备当前传输的至少一个 IP流需要移动, 则步骤 62中, PCRF实体 将用于标识需要移动的 IP流的信息 (如该 IP流对应的分组过滤器) 以及该需要移动的 IP 流对应的目标接入网络通知给 PCEF实体;
若用户设备当前传输的至少一个 IP流需要终止传输, 则步骤 62中, PCRF实体将用 于标识需要终止传输的 IP流的信息通知给 PCEF实体。
在实施中, PCRF 实体根据以下步骤确定自身服务的用户设备当前接入的接入网络的 资源信息:
PCRF 实体根据存储的各用户设备的上下文信息, 获取用户设备当前接入的所有接入 网络的标识; 以及
PCRF 实体根据用户设备当前接入的所有接入网络的标识, 从已获取到的所有接入网 络的资源信息中, 确定出用户设备当前接入的接入网络的资源信息。
需要说明的是, 各用户设备当前接入的所有接入网络的标识是在用户设备通过每个接 入网络建立 IP连接时通过 PCEF实体( PGW )传递给 PCRF实体的。
下面以 A RME以一定频率向 PCRF实体上 ·ί艮该 A RME所存储的各接入网络的资源 信息为例, 对 PCRF实体釆用方法一进行处理的过程进行说明, 参见图 8所示, 包括: 步骤 81、 当 PCRF实体收到 ANRME发送的接入网络资源信息后, 根据 UE当前接入 的接入网络标识, 可获知 UE当前接入的接入网络的资源信息。
步骤 82、 PCRF实体根据设定的算法, 综合判断 UE当前接入的接入网络是否满足 UE 所传输的 IP流需求;
若判断结果为一个或多个 IP流需要移动或终止, 则执行步骤 83;
否则, 执行步骤 84;
步骤 83、 PCRF实体向需要移动和 /或终止的 IP流所锚定的 PCEF ( PGW )发送指示消 息;
其中, 该指示信息包括 IP流移动性触发消息和 /或 IP流终止消息, IP流移动性触发消 息中携带需要移动的 IP流的信息以及对应的目标接入信息 (目标接入技术和 /或目标接入 网络), IP流终止消息中携带需要终止的 IP流的信息。
步骤 84、 结束。
需要说明的是, 方法一中, PCRF实体可以对其服务的每个用户设备进行 IP流移动性 决策,也可以仅对其服务的部分用户设备进行 IP流移动性决策,还可以仅对某个特定的用 户设备进行 IP流移动性决策。
方法二、 PCRF实体在接收到内部触发或外部触发时, 对某个用户设备的 IP流进行 IP 流移动性决策, 其中, 外部触发为 AF实体或 PCEF实体发送的触发消息; 具体为:
PCRF实体确定自身服务的用户设备的已有 IP流的参数信息发生变化(即内部触发,
如 QoS需求发生变化、或签约信息发生变化等), 或者,接收到 AF实体或 PCEF实体发送 的触发消息, 其中, 该触发消息用于触发用户设备的已有 IP流或新增 IP流的 IP流移动性 决策, 具体参见 3GPP TS 23.203协议;
PCRF 实体从已获取到的接入网络的资源信息中, 确定出该用户设备当前接入的接入 网络的资源信息; 以及
PCRF实体根据用户设备当前接入的接入网络的资源信息, 判断用户设备的已有 IP流 是否需要移动或终止传输, 或者, PCRF实体根据用户设备当前接入的接入网络的资源信 息, 确定出传输用户设备的新增 IP流的接入技术和 /或接入网络。
进一步, 若用户设备当前传输的至少一个 IP流需要移动, 则步骤 62中, PCRF实体 将用于标识需要移动的 IP流的信息 (如该 IP流对应的分组过滤器) 以及该需要移动的 IP 流对应的目标接入网络通知给 PCEF实体;
若用户设备当前传输的至少一个 IP流需要终止传输, 则步骤 62中, PCRF实体将用 于标识需要终止传输的 IP流的信息通知给 PCEF实体。
本发明实施例中, 若触发用户设备的已有 IP流或新增 IP流的 IP流移动性决策, 则 AF实体或 PCEF实体向 PCRF实体发送的触发消息中携带:
用于标识用户设备的已有 IP流的信息 (如该已有 IP流的分组过滤器) 以及该已有 IP 流更新的参数信息 (如更新的 QoS需求);
若触发用户设备的新增 IP流的 IP流移动性决策, 则 AF实体或 PCEF实体向 PCRF 实体发送的触发消息中携带:
用于标识用户设备的新增 IP流的信息 (如该已有 IP流的分组过滤器) 以及该新增 IP 流的参数信息。
其中, 若由 AF实体触发用户设备的新增 IP流的 IP流移动性决策, 则该 AF实体向 PCRF实体发送的触发消息中还携带用户设备的 IP地址。
方式 B、 PCRF实体在需要对某个用户设备进行 IP流移动性决策时, 从 ANRME处获 取该用户设备当前接入的接入网络的资源信息; 具体为:
PCRF实体在确定自身服务的用户设备的已有 IP流的参数信息发生变化(即内部触发, 如 QoS需求发生变化、或签约信息发生变化等), 或者,接收到 AF实体或 PCEF实体发送 的触发消息(即外部触发)后, 向 ANRME获取该用户设备当前连接的接入网络的资源信 息;
其中, 触发消息用于触发用户设备的已有 IP流或新增 IP流的 IP流移动性决策, 具体 参见 3GPP TS 23.203协议。
本发明实施例中, 若触发用户设备的已有 IP流或新增 IP流的 IP流移动性决策, 则
AF实体或 PCEF实体向 PCRF实体发送的触发消息中携带:
用于标识用户设备的已有 IP流的信息 (如该已有 IP流的分组过滤器) 以及该已有 IP 流更新的参数信息 (如更新的 QoS需求);
若触发用户设备的新增 IP流的 IP流移动性决策, 则 AF实体或 PCEF实体向 PCRF 实体发送的触发消息中携带:
用于标识用户设备的新增 IP流的信息 (如该已有 IP流的分组过滤器) 以及该新增 IP 流的参数信息。
在实施中, 若为内部触发, 则 PCRF实体根据自身保存的该用户设备的上下文信息确 定该用户设备当前接入的接入网络的标识; 以及 PCRF实体向 ANRME发送携带该用户设 备当前接入的接入网络的标识的请求信息, 以获取该用户设备当前接入的接入网络的资源 信息;
若为外部触发, 则 PCRF实体根据 AF实体或 PCEF实体发送的触发消息中携带的信 息, 或者 PCRF根据自身保存的该用户设备的上下文信息, 确定出用户设备当前接入的接 入网络的标识; 以及 PCRF实体向 A RME发送携带该用户设备当前接入的接入网络的标 识的请求信息, 以获取该用户设备当前接入的接入网络的资源信息。
基于方式 B, 步骤 61中, PCRF实体根据基于获取到的用户设备当前接入的接入网络 的资源信息, 对该用户设备进行 IP流移动性决策, 具体包括:
PCRF 实体根据该用户设备当前接入的接入网络的资源信息, 判断该用户设备的已有 IP流是否需要移动或终止传输, 或者, PCRF实体根据该用户设备当前接入的接入网络的 资源信息, 确定出传输该用户设备的新增 IP流的接入技术和 /或接入网络。
具体的, 若由已有 IP流触发, 即 PCRF实体自身确定该用户设备的已有 IP流的参数 信息发生变化, 或者, AF实体或 PCEF实体通过触发消息触发该用户设备的已有 IP流的 IP流移动性决策, 则 PCRF实体根据该用户设备当前接入的接入网络的资源信息, 判断该 用户设备的已有 IP流是否需要移动或终止传输;
进一步, 若判断结果为该已有 IP流需要移动, 则步骤 62中, PCRF实体将用于标识 该已有 IP流的信息(如该 IP流对应的分组过滤器)以及该已有 IP流对应的目标接入网络 通知给 PCEF实体; 若判断结果为该已有 IP流需要终止传输, 则步骤 62中, PCRF实体将 用于标识该已有 IP流的信息通知给 PCEF实体; 否则, 结束本次 IP流移动性决策。
若由新增 IP流触发, 即 AF实体或 PCEF实体通过触发消息触发该用户设备的新增 IP 流的 IP流移动性决策, 则 PCRF实体根据该用户设备当前接入的接入网络的资源信息, 确 定出传输该用户设备的新增 IP流的接入技术和 /或接入网络;
进一步, 步骤 62中, PCRF实体将确定出的传输新增 IP流的接入技术和 /或接入网络 通知给该新增 IP流所锚定的 PCEF实体。
下面结合具体实施例对 PCRF实体釆用方法二进行处理的过程进行说明, 参见图 9所
示, 包括:
步骤 91、 PCRF实体收到来自外部或内部的触发, 外部触发包括来自 AF或 PCEF的 触发消息, 内部触发由 PCRF内部决定。 具体触发过程参见 3GPP TS 23.203协议。
步骤 92、 PCRF实体从保存的 UE上下文或触发消息中获取 UE当前接入的接入网络 的标识, 向 A RME请求 UE当前接入的每个接入网络的标识对应的资源信息。
获得该资源信息后, 若步骤 91由 UE已有 IP流触发, 则执行步骤 93a;
若由新增 IP流触发, 则执行 93b。
步骤 93a、 PCRF实体根据获得的接入网络的资源信息判断当前 IP流是否需要移动或 终止;
若是, 则执行步骤 94;
若否, 则执行步骤 95;
步骤 93b、 PCRF实体根据获得的接入网络资源信息, 为所请求的新增 IP流选择接入 技术和 /或接入网络。
步骤 94、 PCRF实体向所触发的 IP流所锚定的 PCEF实体发送指示信息;
具体的, 若为已有 IP流触发, 且决策结果为该已有 IP流需要移动, 则该指示信息为
IP流移动性触发消息, 该 IP流移动性触发消息中携带该已有 IP流的信息以及对应的目标 接入信息 (目标接入技术和 /或目标接入网络);
若为已有 IP流触发, 且决策结果为该已有 IP流需要终止传输, 则该指示消息为终止 消息, 该 IP流终止消息中携带该已有 IP流的信息;
若为新增 IP流触发, 则该指示信息中携带该新增 IP流的信息以及为其选择的接入技 术和 /或接入网络。
步骤 95、 结束。
下面结合以下三个具体实施例,对本发明实施例的多接入系统中实现 IP流移动性的过 程进行说明。
实施例一、 本实施例中, ANRME 主动上报自身存储的各接入网络的资源信息, UE 通过 LTE eNB和 WLAN AP接入核心网,假设相应的接入网络的标识分别为: CGI_1 , AP I , 均可以唯一标识 LTE小区和 WLAN AP。 IP流 1、 IP流 2通过 eNB传输, IP流 3通过 WLAN AP传输。 ANRME向 PCRF上报接入网络的资源信息后, PCRF判断是否需要触发 IP流移 动, 其过程参见图 10所示, 包括:
步骤 101、 UE分别通过 eNB和 WLAN AP接入 EPC。
在该过程中 , UE向 PGW上报所接入的小区标识 CGI_1和 WLAN AP标识 AP_1 , PGW 将其上报给 PCRF实体, PCRF实体保存上述接入网络的标识以及通过其传输的 IP流信息。
步骤 102、 ANRME向 PCRF实体上报接入网络的资源信息, 其中包括 CGI_1和 AP_1
所标识的网络的资源信息, 具体如下:
CGI 1对于 IP流 2对应的 QCI丢包率从 10·3上升到 10·2, 其它不变;
AP I对于 IP流 2对应的 QCI丢包率为 1(Γ3。
步骤 103、 PCRF实体进行策略判断 (即 IP流移动性决策); 具体为:
PCRF实体根据步骤 101 中获得的接入网络的资源信息, 以及其保存的 UE上下文信 息, 可知 UE当前接入网络的资源信息; 结合 IP流所需的 QoS需求, PCRF实体可判断出 CGI 1所标识的小区不再适合于传输 IP流 2 , 而 AP_1所标识的 WLAN AP可以传输 IP流
2。
步骤 104、PCRF实体向 IP流 2所锚定的 PGW发送 IP-CAN会话修改消息,该 IP-CAN 会话爹改消息包含 IP流 2对应的分组过滤器(packet filter for IP flow2 )和目标接入指示 ( target access ), 表示 IP流 2应当使用 WLAN接入传输, 本实施例中目标接入为 WLAN。
实施例二, 本实施例中, 在 AF实体触发下, PCRF实体向 ANRME请求接入网络的 资源信息,本实施例的预置条件与实施例一的不同之处在于: PCRF实体在 AF实体触发下 向 A RME请求接入网络的资源信息。设 AF实体向 PCRF实体发送新的 IP流信息, PCRF 实体在 AF实体发送的触发消息触发下获取接入网络的资源信息, 并判断新的 IP流所应选 择的接入技术, 其过程参见图 11所示, 包括:
步骤 111、 UE分别通过 e B和 WLAN AP接入 EPC。
在该过程中 , UE向 PGW上报所接入的小区标识 CGI_1和 WLAN AP标识 AP_1 , PGW 将其上报给 PCRF实体, PCRF实体保存上述接入网络的标识以及通过其传输的 IP流信息。
步骤 112a、 AF实体向 PCRF实体发送应用或业务信息,其中包含 IP流 4 (即新 IP流) 的 QoS需求, 以及 UE IP地址。
步骤 112b、 PCRF实体返回响应。
步骤 113、 PCRF向 ANRME获取 UE当前接入的接入网络的资源信息; 具体为: PCRF实体根据步骤 111中收到的 UE IP地址可找到对应的 UE上下文信息,进而获知
UE当前接入的接入网络的标识; PCRF实体使用该标识向 A RME获取对应的接入网络的 资源信息, 获取到的资源信息如下:
CGI 1对于 IP流 4对应的 QCI可提供的时延为 100ms;
AP I对于 IP流 4对应的 QCI可提供的时延为 200ms。
步骤 114、 PCRF实体进行策略判断 (即 IP流移动性决策); 具体为:
PCRF实体根据签约信息以及步骤 112a中获得的 IP流 4的 QoS需求, 判断该 IP流应 当使用 eNB传输。
步骤 115、 PCRF实体向 IP流 4所锚定的 PGW发送 IP-CAN会话修改消息, 其中包含
IP流 4对应的分组过滤器和目标接入指示( E-UTRAN ), 表示 IP流 4应当使用 E-UTRAN
接入传输。
实施例三, 本实施例中, 在 PCEF实体触发下, PCRF实体向 A RME请求接入网络 的资源信息, 本实施例预置条件与实施例一的不同之处在于: PCRF实体在 PCEF实体触 发下向 AKRME请求接入网络的资源信息。 PCEF实体在 UE触发下向 PCRF实体发送已 有 IP流 3更新的 QoS需求( GBR从 2M增加到 5M ), PCRF实体在该 PCEF实体发送的 触发消息的触发下获取接入网络的资源信息, 并判断 IP流 3是否要进行移动。其过程参见 图 12所示, 包括:
步骤 121、 UE分别通过 eNB和 WL AN AP接入 EPC。
在该过程中 , UE向 PGW上报所接入的小区标识 CGI_1和 WLAN AP标识 AP_1 , PGW 将其上报给 PCRF实体, PCRF实体保存上述接入网络的标识以及通过其传输的 IP流信息。
步骤 122、 UE向核心网控制节点(图中未示)发送承载资源请求, 其中该承载资源请 求包含 IP流 3的分组过滤器以及更新的 QoS需求(GBR=5M kbps )。 核心网控制节点向 PGW发送承载资源命令, 其中该承载资源命令包含上述信息。
步骤 123、 PCEF实体在步骤 122的触发下, 向 PCRF实体发送 IP-CAN会话修改指示 消息, 其中该 IP-CAN会话修改指示消息包含 IP流 3的分组过滤器以及更新的 QoS需求。
步骤 124、 PCRF实体根据 UE上下文信息中的接入网络的标识, 向 ANRME获取对应 的接入网络的资源信息, 具体为:
CGI 1的负荷已经达到 85%;
AP I的负荷也已达到 75%。
步骤 125、 PCRF实体进行策略判断 (即 IP流移动性决策); 具体为:
该 PCRF实体判断出该 UE当前接入的接入网络均不能满足 IP流 3更新的 QoS需求, 决定终止该 IP流 3的传输。
步骤 126、 PCRF实体向 IP流 3所锚定的 PCEF实体返回 IP-CAN会话修改响应, 其 中该 IP-CAN会话修改响应包含终止 IP流 3的指示 ( Termination of IP flow3 )。
上述方法处理流程可以用软件程序实现, 该软件程序可以存储在存储介盾中, 当存储 的软件程序被调用时, 执行上述方法步骤。
基于同一发明构思, 本发明实施例中还提供了一种 PCRF实体, 由于该 PCRF实体解 决问题的原理与上述多接入系统中实现 IP流移动性的方法相似,因此该 PCRF实体的实施 可以参见方法的实施, 重复之处不再赘述。
参见图 13所示, 本发明实施例提供的 PCRF实体, 包括:
决策模块 131 , 用于基于获取到的用户设备当前接入的接入网络的资源信息, 对用户 设备进行 IP流移动性决策;
通知模块 132, 用于将 IP流移动性决策的结果通知给 PCEF实体。
在实施中, 该 PCRF实体还包括:
获取模块 133 , 用于从 ANRME处获取接入网络的资源信息;
其中, ANRME中存储有 3GPP接入网络的资源信息、 以及非 3GPP接入网络的资源 信息,该 ANRME中所存储的每个接入网络的资源信息以该接入网络的标识为唯一关键字。
作为一种优选获取方式, 获取模块 133具体用于:
接收 A RME主动发送的接入网络的资源信息;或者,主动向 ANRME发送获取请求, 该获取请求用于请求获取 ANRME存储的所有接入网络的资源信息。
该优选获取方式下, 获取模块 133具体用于:
接收 ANRME按照设定的周期发送的 ANRME存储的所有接入网络的资源信息; 和 / 或, 接收 ANRME发送的更新后的接入网络的资源信息, 其中, ANRME在更新了自身存 储的接入网络的资源信息后, 将更新后的接入网络的资源信息发送给该 PCRF实体。
该优选获取方式, 作为一种优选处理方式, 决策模块 131具体用于:
在获取模块 133接收到 A RME发送的接入网络的资源信息后, 确定出自身服务的用 户设备当前接入的接入网络的资源信息; 以及根据用户设备当前接入的接入网络的资源信 息, 判断用户设备当前传输的 IP流是否需要移动或终止传输。
该优选获取方式, 作为另一种优选处理方式, 决策模块 131具体用于:
确定自身服务的用户设备的已有 IP 流的参数信息发生变化, 或者, 接收到应用功能 AF实体或 PCEF实体发送的触发消息;从获取模块已获取到的接入网络的资源信息中,确 定出用户设备当前接入的接入网络的资源信息; 以及根据用户设备当前接入的接入网络的 资源信息, 判断用户设备的已有 IP流是否需要移动或终止传输, 或者, 根据用户设备当前 接入的接入网络的资源信息,确定出传输用户设备的新增 IP流的接入技术和 /或接入网络; 其中, 该触发消息中携带用于标识用户设备的已有 IP流的信息以及该已有 IP流更新 的参数信息;或者,该触发消息中携带用于标识用户设备的新增 IP流的信息以及该新增 IP 流的参数信息。
作为另一种优选获取方式, 获取模块 133具体用于:
在确定自身服务的用户设备的已有 IP流的参数信息发生变化, 或者, 接收到 AF实体 或 PCEF实体发送的触发消息后, 向 ANRME获取用户设备当前连接的接入网络的资源信 息;
其中, 该触发消息中携带用于标识用户设备的已有 IP流的信息以及该已有 IP流更新 的参数信息;或者,该触发消息中携带用于标识用户设备的新增 IP流的信息以及该新增 IP 流的参数信息。
该优选获取方式下, 获取模块 133具体用于:
根据自身保存的用户设备的上下文信息、 或者 AF实体或 PCEF实体发送的触发消息
中携带的信息, 确定用户设备当前接入的接入网络的标识; 以及向 ANRME发送携带用户 设备当前接入的接入网络的标识的请求信息, 以获取用户设备当前接入的接入网络的资源 信息。
该优选获取方式下, 决策模块 131具体用于:
根据获取模块 133获取到的用户设备当前接入的接入网络的资源信息, 判断用户设备 的已有 IP流是否需要移动或终止传输,或者,根据获取模块获取到的用户设备当前接入的 接入网络的资源信息, 确定出传输用户设备的新增 IP流的接入技术和 /或接入网络。
优选的, 本发明实施例中, PCRF实体可以与 ANRME独立部署; 或者, PCRF实体 可以与 A RME合设部署。
进一步,若 PCRF实体与 A RME独立部署,则 PCRF实体的获取模块 133与 ANRME 之间通过定义的标准化接口进行通信; 若 PCRF实体与 A RME合设部署, 则 PCRF实体 的获取模块 133与 A RME之间通过内部接口进行通信。
基于上述实施例, 参见图 14 所示, 本发明实施例提供了一种接入网络资源管理实体 ANRME, 包括:
存储模块 141 ,用于存储和维护 3GPP接入网络的资源信息以及非 3GPP接入网络的资 源信息, 其中, 该存储模块 141所存储的每个接入网络的资源信息以该接入网络的标识为 唯一关键字;
通信模块 142, 用于向 PCRF实体提供接入网络的资源信息。
在实施中, 通信模块 142具体用于:
主动向 PCRF实体发送存储模块 141所存储的接入网络的资源信息; 或者, 在接收到 PCRF实体发送的获取请求后, 向 PCRF实体发送存储模块 141所存储的所 有接入网络的资源信息; 或者,
在接收到 PCRF实体发送的请求信息后, 向 PCRF实体发送该请求信息携带的标识对 应的接入网络的资源信息。
进一步, 通信模块 142主动向 PCRF实体发送接入网络的资源信息, 具体包括: 按照设定的周期, 将存储模块 141所存储的所有接入网络的资源信息发送给 PCRF实 体; 和 /或,
在存储模块 141更新了所存储的接入网络的资源信息后, 将更新后的接入网络的资源 信息发送给 PCRF实体。
优选的, 本发明实施例中, PCRF实体可以与 ANRME独立部署; 或者, PCRF实体 可以与 AKRME合设部署。
进一步, 若 ANRME与 PCRF实体独立部署, 则通信模块 142通过定义的标准化接口 与 PCRF进行通信;
若 ANRME与 PCRF实体合设部署, 则通信模块 142通过内部接口与 PCRF实体进行 通信。
下面结合具体硬件结构, 对本发明实施例提供的 PCRF实体的结构、 处理方式进行说 明。
在图 13的实施例中, PCRF实体包括收发信机、与该收发信机连接的至少一个处理器、 以及分别与收发信机和该至少一个处理器连接的存储器, 其中:
处理器被配置用于基于获取到的用户设备当前接入的接入网络的资源信息, 对用户设 备进行 IP流移动性决策; 并通过收发信机将 IP流移动性决策的结果通知给 PCEF实体。
在实施中, 收发信机还被配置用于从 ANRME 处获取接入网络的资源信息; 其中, ANRME 中存储有 3GPP接入网络的资源信息、 以及非 3GPP接入网络的资源信息, 该 ANRME中所存储的每个接入网络的资源信息以该接入网络的标识为唯一关键字。
相应的, 存储器被配置用于存储收发信机从 ANRME处获取接入网络的资源信息。 作为一种优选获取方式, 收发信机被配置具体用于: 接收 ANRME主动发送的接入网 络的资源信息; 或者, 主动向 ANRME发送获取请求, 该获取请求用于请求获取 ANRME 存储的所有接入网络的资源信息。
该第一种优选获取方式下, 收发信机被配置具体用于:
接收 ANRME按照设定的周期发送的 ANRME存储的所有接入网络的资源信息; 和 / 或, 接收 ANRME发送的更新后的接入网络的资源信息, 其中, ANRME在更新了自身存 储的接入网络的资源信息后, 将更新后的接入网络的资源信息发送给该 PCRF实体。
基于上述第一种优选获取方式, 作为一种优选处理方式, 处理器被配置具体用于: 在收发信机接收到 ANRME发送的接入网络的资源信息后, 确定出自身服务的用户设 备当前接入的接入网络的资源信息; 以及根据用户设备当前接入的接入网络的资源信息, 判断用户设备的已有 IP流是否需要移动或终止传输。
作为另一种优选处理方式, 处理器被配置具体用于:
确定自身服务的用户设备的已有 IP流的参数信息发生变化,或者, 收发信机接收到应 用功能 AF实体或 PCEF实体发送的触发消息; 从存储器中所存储的接入网络的资源信息 中, 确定出用户设备当前接入的接入网络的资源信息; 以及根据用户设备当前接入的接入 网络的资源信息, 判断用户设备的已有 IP流是否需要移动或终止传输, 或者, 根据用户设 备当前接入的接入网络的资源信息, 确定出传输用户设备的新增 IP流的接入技术和 /或接 入网络;
其中, 该触发消息中携带用于标识本用户设备的已有 IP流的信息以及该已有 IP流更 新的参数信息; 或者,该触发消息中携带用于标识本用户设备的新增 IP流的信息以及该新 增 IP流的参数信息。
作为另一种优选获取方式, 处理器被配置具体用于: 在确定自身服务的用户设备的已 有 IP流的参数信息发生变化, 或者, 收发信机接收到 AF实体或 PCEF实体发送的触发消 息后, 触发收发信机向 ANRME获取用户设备当前连接的接入网络的资源信息;
其中, 该触发消息中携带用于标识本用户设备的已有 IP流的信息以及该已有 IP流更 新的参数信息; 或者,该触发消息中携带用于标识本用户设备的新增 IP流的信息以及该新 增 IP流的参数信息。
该优选获取方式下,处理器被配置具体用于:根据自身保存的用户设备的上下文信息、 或者 AF实体或 PCEF实体发送的触发消息中携带的信息, 确定用户设备当前接入的接入 网络的标识; 以及触发收发信机向 A RME发送携带用户设备当前接入的接入网络的标识 的请求信息, 以获取用户设备当前接入的接入网络的资源信息。
基于上述第二种优选获取方式, 处理器被配置具体用于: 根据存储器中所存储的用户 设备当前接入的接入网络的资源信息, 判断用户设备的已有 IP 流是否需要移动或终止传 输, 或者, 根据获取到的用户设备当前接入的接入网络的资源信息, 确定出传输用户设备 的新增 IP流的接入技术和 /或接入网络。
优选的, 本发明实施例中, PCRF实体可以与 ANRME独立部署; 或者, PCRF实体 可以与 A RME合设部署。
进一步, 若 PCRF实体与 ANRME独立部署, 则 PCRF实体的收发信机与 AKRME之 间通过定义的标准化接口进行通信; 若 PCRF实体与 ANRME合设部署, 则 PCRF实体的 收发信机与 AKRME之间通过内部接口进行通信。
下面结合具体硬件结构,对本发明实施例提供的 ANRME的结构、处理方式进行说明。 在图 14的实施例中, ANRME实体包括收发信机、与该收发信机连接的至少一个处理 器、 以及分别与该收发信机和该至少一个处理器连接的存储器, 其中:
存储器被配置用于存储 3GPP接入网络的资源信息以及非 3GPP接入网络的资源信息, 其中, 该存储器中所存储的每个接入网络的资源信息以该接入网络的标识为唯一关键字; 处理器被配置用于维护存储器中所存储的各接入网络的资源信息;
收发信机被配置用于向 PCRF实体提供接入网络的资源信息。
在实施中, 收发信机被配置具体用于:
主动向 PCRF实体发送存储器所存储的接入网络的资源信息; 或者,
在接收到 PCRF实体发送的获取请求后, 向 PCRF实体发送存储器所存储的所有接入 网络的资源信息; 或者,
在接收到 PCRF实体发送的请求信息后, 向 PCRF实体发送该请求信息携带的标识对 应的接入网络的资源信息。
进一步, 收发信机主动向 PCRF实体发送接入网络的资源信息, 具体包括:
按照设定的周期, 将存储器所存储的所有接入网络的资源信息发送给 PCRF实体; 和 / 或,
在存储器更新了所存储的接入网络的资源信息后, 将更新后的接入网络的资源信息发 送给 PCRF实体。
优选的, 本发明实施例中, PCRF实体可以与 ANRME独立部署; 或者, PCRF实体 可以与 A RME合设部署。
进一步, 若 ANRME与 PCRF实体独立部署, 则收发信机被配置通过定义的标准化接 口与 PCRF进行通信;
若 ANRME与 PCRF实体合设部署, 则收发信机被配置通过内部接口与 PCRF实体进 行通信。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或计算机程序产 品。 因此, 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实 施例的形式。 而且, 本发明可釆用在一个或多个其中包含有计算机可用程序代码的计算机 可用存储介盾 (包括但不限于磁盘存储器、 CD-ROM、 光学存储器等)上实施的计算机程 序产品的形式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产品的流程图 和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的每一流 程和 /或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些计算机 程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器 以产生一个机器, 使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用 于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方 式工作的计算机可读存储器中, 使得存储在该计算机可读存储器中的指令产生包括指令装 置的制造品, 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多个 方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机 或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理, 从而在计算机或其他 可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一个 方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了基本创造性概 念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权利要求意欲解释为包括优选 实施例以及落入本发明范围的所有变更和修改。
显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和 范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。
Claims
1、 一种多接入系统中实现 IP流移动性的方法, 其特征在于, 该方法包括: 策略和计费规则功能 PCRF实体基于获取到的用户设备当前接入的接入网络的资源信 息, 对所述用户设备进行 IP流移动性决策, 得到 IP流移动性决策的结果;
所述 PCRF实体将所述 IP流移动性决策的结果通知给 PCEF实体。
2、如权利要求 1所述的方法, 其特征在于, 所述 PCRF实体根据以下方式获取接入网 络的资源信息:
所述 PCRF实体从接入网络资源管理实体 ANRME处获取接入网络的资源信息; 其中, 所述 ANRME中存储有第三代合作伙伴计划 3GPP接入网络的资源信息、 以及 非 3GPP接入网络的资源信息, 所述 ANRME中所存储的每个接入网络的资源信息以该接 入网络的标识为唯一关键字。
3、 如权利要求 2所述的方法, 其特征在于, 所述 PCRF实体从所述 ANRME处获取 接入网络的资源信息, 具体包括:
所述 PCRF实体接收所述 ANRME主动发送的接入网络的资源信息; 或者, 所述 PCRF实体主动向所述 ANRME发送获取请求, 所述获取请求用于请求获取所述 ANRME存储的所有接入网络的资源信息。
4、 如权利要求 3所述的方法, 其特征在于, 所述 PCRF实体接收所述 ANRME主动 发送的接入网络的资源信息, 具体包括:
所述 PCRF实体接收所述 ANRME按照设定的周期发送的所述 ANRME存储的所有接 入网络的资源信息; 和 /或,
所述 PCRF实体接收所述 ANRME发送的更新后的接入网络的资源信息, 其中, 所述 ANRME在更新了自身存储的接入网络的资源信息后, 将更新后的接入网络的资源信息发 送给所述 PCRF实体。
5、如权利要求 3所述的方法, 其特征在于, 所述 PCRF实体根据基于获取到的用户设 备当前接入的接入网络的资源信息, 对所述用户设备进行 IP流移动性决策, 具体包括: 所述 PCRF 实体在接收到所述 ANRME发送的接入网络的资源信息后, 确定出所述 PCRF实体服务的用户设备当前接入的接入网络的资源信息;
所述 PCRF实体根据所述用户设备当前接入的接入网络的资源信息, 判断所述用户设 备的已有 IP流是否需要移动或终止传输。
6、如权利要求 3所述的方法, 其特征在于, 所述 PCRF实体基于获取到的接入网络的 资源信息, 对所述用户设备进行 IP流移动性决策, 具体包括:
所述 PCRF实体确定自身服务的用户设备的已有 IP流的参数信息发生变化, 或者,接
收到应用功能 AF实体或所述 PCEF实体发送的触发消息;
所述 PCRF实体从已获取到的接入网络的资源信息中, 确定出所述用户设备当前接入 的接入网络的资源信息;
所述 PCRF实体根据所述用户设备当前接入的接入网络的资源信息, 判断所述用户设 备的已有 IP流是否需要移动或终止传输, 或者, 所述 PCRF实体根据所述用户设备当前接 入的接入网络的资源信息, 确定出传输所述用户设备的新增 IP流的接入技术和 /或接入网 络;
其中,所述触发消息中携带用于标识所述用户设备的已有 IP流的信息以及所述已有 IP 流更新的参数信息; 或者, 所述触发消息中携带用于标识所述用户设备的新增 IP流的信息 以及所述新增 IP流的参数信息。
7、 如权利要求 2所述的方法, 其特征在于, 所述 PCRF实体从所述 ANRME处获取 接入网络的资源信息, 具体包括:
所述 PCRF实体在确定自身服务的用户设备的已有 IP流的参数信息发生变化, 或者, 接收到 AF实体或所述 PCEF实体发送的触发消息后, 向所述 ANRME获取所述用户设备 当前连接的接入网络的资源信息;
其中,所述触发消息中携带用于标识所述用户设备的已有 IP流的信息以及所述已有 IP 流更新的参数信息; 或者, 所述触发消息中携带用于标识所述用户设备的新增 IP流的信息 以及所述新增 IP流的参数信息。
8、 如权利要求 7所述的方法, 其特征在于, 所述 PCRF实体向所述 ANRME获取所 述用户设备当前连接的接入网络的资源信息, 具体包括:
所述 PCRF实体根据自身保存的所述用户设备的上下文信息、 或者所述 AF实体或所 述 PCEF实体发送的触发消息中携带的信息, 确定所述用户设备当前接入的接入网络的标 识;
所述 PCRF实体向所述 ANRME发送携带所述用户设备当前接入的接入网络的标识的 请求信息, 以获取所述用户设备当前接入的接入网络的资源信息。
9、如权利要求 7所述的方法, 其特征在于, 所述 PCRF实体基于获取到的接入网络的 资源信息, 对所述用户设备进行 IP流移动性决策, 具体包括:
所述 PCRF实体根据所述用户设备当前接入的接入网络的资源信息, 判断所述用户设 备的已有 IP流是否需要移动或终止传输, 或者, 所述 PCRF实体根据所述用户设备当前接 入的接入网络的资源信息, 确定出传输所述用户设备的新增 IP流的接入技术和 /或接入网 络。
10、 如权利要求 3、 4或 7所述的方法, 其特征在于,
若所述 PCRF实体与所述 A RME独立部署, 则所述 PCRF实体与所述 A RME之间
通过定义的标准化接口进行通信;
若所述 PCRF实体与所述 A RME合设部署, 则所述 PCRF实体与所述 A RME之间 通过内部接口进行通信。
11、 如权利要求 1~9任一项所述的方法, 其特征在于, 每个接入网络的资源信息包括 所述接入网络的资源使用情况、 所述接入网络可提供的服务盾量 QoS、 以及所述接入网络 的回传链路速率中的至少一种信息;
其中, 所述接入网络的资源包括空口资源和回传资源。
12、 一种策略和计费规则功能 PCRF实体, 其特征在于, 所述 PCRF实体包括: 决策模块, 用于基于获取到的用户设备当前接入的接入网络的资源信息, 对所述用户 设备进行 IP流移动性决策, 得到 IP流移动性决策的结果;
通知模块, 用于将所述 IP流移动性决策的结果通知给 PCEF实体。
13、 如权利要求 12所述的 PCRF实体, 其特征在于, 所述 PCRF实体还包括: 获取模块, 用于从 A RME处获取接入网络的资源信息; 其中, 所述 ANRME中存储 有第三代合作伙伴计划 3GPP接入网络的资源信息、 以及非 3GPP接入网络的资源信息, 所述 ANRME中存储的每个接入网络的资源信息以该接入网络的标识为唯一关键字。
14、 如权利要求 13所述的 PCRF实体, 其特征在于, 所述获取模块具体用于: 接收所述 ANRME主动发送的接入网络的资源信息; 或者,
主动向所述 ANRME发送获取请求,所述获取请求用于请求获取所述 ANRME存储的 所有接入网络的资源信息。
15、 如权利要求 14所述的 PCRF实体, 其特征在于, 所述获取模块具体用于: 接收所述 A RME按照设定的周期发送的所述 ANRME存储的所有接入网络的资源信 息; 和 /或,
接收所述 ANRME发送的更新后的接入网络的资源信息, 其中, 所述 ANRME在更新 了自身存储的接入网络的资源信息后, 将更新后的接入网络的资源信息发送给所述 PCRF 实体。
16、 如权利要求 14所述的 PCRF实体, 其特征在于, 所述决策模块具体用于: 在所述获取模块接收到所述 ANRME发送的接入网络的资源信息后, 确定出自身服务 的用户设备当前接入的接入网络的资源信息; 以及根据所述用户设备当前接入的接入网络 的资源信息, 判断所述用户设备的已有 IP流是否需要移动或终止传输。
17、 如权利要求 14所述的 PCRF实体, 其特征在于, 所述决策模块具体用于: 确定自身服务的用户设备的已有 IP 流的参数信息发生变化, 或者, 接收到应用功能
AF实体或所述 PCEF实体发送的触发消息;从所述获取模块已获取到的接入网络的资源信 息中, 确定出所述用户设备当前接入的接入网络的资源信息; 以及根据所述用户设备当前
接入的接入网络的资源信息,判断所述用户设备的已有 IP流是否需要移动或终止传输,或 者, 根据所述用户设备当前接入的接入网络的资源信息, 确定出传输所述用户设备的新增
IP流的接入技术和 /或接入网络;
其中,所述触发消息中携带用于标识所述用户设备的已有 IP流的信息以及所述已有 IP 流更新的参数信息; 或者, 所述触发消息中携带用于标识所述用户设备的新增 IP流的信息 以及所述新增 IP流的参数信息。
18、 如权利要求 13所述的 PCRF实体, 其特征在于, 所述获取模块具体用于: 在确定自身服务的用户设备的已有 IP流的参数信息发生变化, 或者, 接收到 AF实体 或所述 PCEF实体发送的触发消息后, 向所述 ANRME获取所述用户设备当前连接的接入 网络的资源信息;
其中,所述触发消息中携带用于标识所述用户设备的已有 IP流的信息以及所述已有 IP 流更新的参数信息; 或者, 所述触发消息中携带用于标识所述用户设备的新增 IP流的信息 以及所述新增 IP流的参数信息。
19、 如权利要求 18所述的 PCRF实体, 其特征在于, 所述获取模块具体用于: 根据自身保存的所述用户设备的上下文信息、 或者所述 AF实体或所述 PCEF实体发 送的触发消息中携带的信息, 确定所述用户设备当前接入的接入网络的标识; 以及向所述 ANRME发送携带所述用户设备当前接入的接入网络的标识的请求信息, 以获取所述用户 设备当前接入的接入网络的资源信息。
20、 如权利要求 18所述的 PCRF实体, 其特征在于, 所述决策模块具体用于: 根据所述获取模块获取到的所述用户设备当前接入的接入网络的资源信息, 判断所述 用户设备的已有 IP流是否需要移动或终止传输,或者,根据所述获取模块获取到的所述用 户设备当前接入的接入网络的资源信息,确定出传输所述用户设备的新增 IP流的接入技术 和 /或接入网络。
21、 如权利要求 13 20任一项所述的 PCRF实体, 其特征在于,
若所述 PCRF实体与所述 ANRME独立部署, 则所述获取模块与所述 ANRME之间通 过定义的标准化接口进行通信;
若所述 PCRF实体与所述 ANRME合设部署, 则所述获取模块与所述 ANRME之间通 过内部接口进行通信。
22、 一种接入网络资源管理实体 A RME, 其特征在于, 该 A RME包括: 存储模块, 用于存储和维护 3GPP接入网络的资源信息以及非 3GPP接入网络的资源 信息, 其中, 所述存储模块所存储的每个接入网络的资源信息以该接入网络的标识为唯一 关键字;
通信模块, 用于向 PCRF实体提供接入网络的资源信息。
23、 如权利要求 22所述的 A RME, 其特征在于, 所述通信模块具体用于: 主动向所述 PCRF实体发送所述存储模块所存储的接入网络的资源信息; 或者, 在接收到所述 PCRF实体发送的获取请求后, 向所述 PCRF实体发送所述存储模块所 存储的所有接入网络的资源信息; 或者,
在接收到所述 PCRF实体发送的请求信息后, 向所述 PCRF实体发送所述请求信息携 带的标识对应的接入网络的资源信息。
24、 如权利要求 23所述的 A RME, 其特征在于, 所述通信模块具体用于: 按照设定的周期, 将所述存储模块所存储的所有接入网络的资源信息发送给所述 PCRF实体; 和 /或,
在所述存储模块更新了所存储的接入网络的资源信息后, 将更新后的接入网络的资源 信息发送给所述 PCRF实体。
25、 如权利要求 22~24任一项所述的 ANRME, 其特征在于,
若所述 ANRME与所述 PCRF实体独立部署, 则所述通信模块通过定义的标准化接口 与所述 PCRF进行通信;
若所述 ANRME 与所述 PCRF 实体合设部署, 则所述通信模块通过内部接口与所述 PCRF实体进行通信。
26、 一种策略和计费规则功能 PCRF实体, 其特征在于, 所述 PCRF实体包括: 收发 信机、 与该收发信机连接的至少一个处理器、 以及分别与收发信机和该至少一个处理器连 接的存储器, 其中:
处理器被配置用于基于获取到的用户设备当前接入的接入网络的资源信息, 对用户设 备进行 IP流移动性决策; 并通过收发信机将 IP流移动性决策的结果通知给 PCEF实体。
27、根据权利要求 26所述的 PCRF实体, 其特征在于, 所述收发信机还被配置用于从 ANRME处获取接入网络的资源信息; 其中, ANRME中存储有 3GPP接入网络的资源信 息、 以及非 3GPP接入网络的资源信息, 该 ANRME中所存储的每个接入网络的资源信息 以该接入网络的标识为唯一关键字。
28、根据权利要求 27所述的 PCRF实体, 其特征在于, 所述存储器被配置用于存储收 发信机从 ANRME处获取接入网络的资源信息。
29、根据权利要求 28所述的 PCRF实体, 其特征在于, 收发信机被配置具体用于: 接 收 A RME主动发送的接入网络的资源信息; 或者, 主动向 ANRME发送获取请求, 该获 取请求用于请求获取 ANRME存储的所有接入网络的资源信息。
30、 根据权利要求 29所述的 PCRF实体, 其特征在于, 收发信机被配置具体用于: 接收 ANRME按照设定的周期发送的 ANRME存储的所有接入网络的资源信息; 和 / 或, 接收 ANRME发送的更新后的接入网络的资源信息, 其中, ANRME在更新了自身存
储的接入网络的资源信息后, 将更新后的接入网络的资源信息发送给该 PCRF实体。
31、 根据权利要求 29 所述的 PCRF 实体, 其特征在于, 处理器在收发信机接收到 ANRME发送的接入网络的资源信息后, 确定出自身服务的用户设备当前接入的接入网络 的资源信息; 以及根据用户设备当前接入的接入网络的资源信息, 判断用户设备的已有 IP 流是否需要移动或终止传输。
32、根据权利要求 29所述的 PCRF实体, 其特征在于, 处理器确定自身服务的用户设 备的已有 IP流的参数信息发生变化, 或者, 收发信机接收到应用功能 AF实体或 PCEF实 体发送的触发消息; 从存储器中所存储的接入网络的资源信息中, 确定出用户设备当前接 入的接入网络的资源信息; 以及根据用户设备当前接入的接入网络的资源信息, 判断用户 设备的已有 IP流是否需要移动或终止传输,或者,根据用户设备当前接入的接入网络的资 源信息, 确定出传输用户设备的新增 IP流的接入技术和 /或接入网络;
其中,所述触发消息中携带用于标识所述用户设备的已有 IP流的信息以及所述已有 IP 流更新的参数信息; 或者, 所述触发消息中携带用于标识所述用户设备的新增 IP流的信息 以及所述新增 IP流的参数信息。
33、根据权利要求 27所述的 PCRF实体, 其特征在于, 处理器被配置具体用于: 在确 定自身服务的用户设备的已有 IP流的参数信息发生变化, 或者, 收发信机接收到 AF实体 或 PCEF实体发送的触发消息后, 触发收发信机向 A RME获取用户设备当前连接的接入 网络的资源信息;
其中,所述触发消息中携带用于标识所述用户设备的已有 IP流的信息以及所述已有 IP 流更新的参数信息; 或者, 所述触发消息中携带用于标识所述用户设备的新增 IP流的信息 以及所述新增 IP流的参数信息。
34、根据权利要求 33所述的 PCRF实体, 其特征在于, 处理器根据自身保存的用户设 备的上下文信息、 或者 AF实体或 PCEF实体发送的触发消息中携带的信息, 确定用户设 备当前接入的接入网络的标识; 以及触发收发信机向 A RME发送携带用户设备当前接入 的接入网络的标识的请求信息, 以获取用户设备当前接入的接入网络的资源信息。
35、根据权利要求 33所述的 PCRF实体, 其特征在于, 处理器根据存储器中所存储的 用户设备当前接入的接入网络的资源信息,判断用户设备的已有 IP流是否需要移动或终止 传输, 或者, 根据获取到的用户设备当前接入的接入网络的资源信息, 确定出传输用户设 备的新增 IP流的接入技术和 /或接入网络。
36、 根据权利要求 33所述的 PCRF实体, 其特征在于, 若 PCRF实体与 AKRME独 立部署, 则 PCRF 实体的收发信机与 ANRME之间通过定义的标准化接口进行通信; 若 PCRF实体与 AKRME合设部署, 则 PCRF实体的收发信机与 ANRME之间通过内部接口 进行通信。
37、 一种接入网络资源管理实体 ANRME实体, 其特征在于, 该 ANRME包括: 收发 信机、 与该收发信机连接的至少一个处理器、 以及分别与该收发信机和该至少一个处理器 连接的存储器, 其中:
存储器被配置用于存储 3GPP接入网络的资源信息以及非 3GPP接入网络的资源信息, 其中, 该存储器中所存储的每个接入网络的资源信息以该接入网络的标识为唯一关键字; 处理器被配置用于维护存储器中所存储的各接入网络的资源信息;
收发信机被配置用于向 PCRF实体提供接入网络的资源信息。
38、 根据权利要求 37所述的 ANRME实体, 其特征在于, 收发信机被配置具体用于: 主动向 PCRF实体发送存储器所存储的接入网络的资源信息; 或者,
在接收到 PCRF实体发送的获取请求后, 向 PCRF实体发送存储器所存储的所有接入 网络的资源信息; 或者,
在接收到 PCRF实体发送的请求信息后, 向 PCRF实体发送该请求信息携带的标识对 应的接入网络的资源信息。
39、 根据权利要求 38所述的 A RME实体, 其特征在于, 收发信机主动向 PCRF实 体发送接入网络的资源信息, 具体包括:
按照设定的周期, 将存储器所存储的所有接入网络的资源信息发送给 PCRF实体; 和 / 或,
在存储器更新了所存储的接入网络的资源信息后, 将更新后的接入网络的资源信息发 送给 PCRF实体。
40、 根据权利要求 37所述的 ANRME实体, 其特征在于, 若 A RME与 PCRF实体 独立部署, 则收发信机被配置通过定义的标准化接口与 PCRF进行通信;
若 ANRME与 PCRF实体合设部署, 则收发信机被配置通过内部接口与 PCRF实体进 行通信。
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