CN104349386A

CN104349386A - Method and device for realizing IP (internet protocol) flow mobility in multi-access system

Info

Publication number: CN104349386A
Application number: CN201310339782.7A
Authority: CN
Inventors: 周燕飞
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT
Priority date: 2013-08-06
Filing date: 2013-08-06
Publication date: 2015-02-11
Also published as: WO2015018324A1

Abstract

The invention discloses a method and a device for realizing IP (internet protocol) flow mobility in a multi-access system. The limited resource of each accessing network can be effectively scheduled and used. The method comprises the following steps that on the basis of acquired resource information of the accessing network currently accessed by a terminal, a PCRF (policy charging and rules function) entity performs IP flow mobility decision on the terminal; the PCRF entity informs a PCEF (policy and charging enforcement function) entity of the result of the IP flow mobility decision. In the embodiment of the invention, due to the fact that the PCRF entity combines the resource information of the accessing network currently accessed by the terminal with a QoS (Quality of Service) request of IP flow, and the distribution of the IP flow of the terminal in each accessing network currently accessed by the terminal is adjusted, so the limited resource of each accessing network can be effectively scheduled and used.

Description

The method and apparatus of IP flow mobility is realized in a kind of multi-access systems

Technical field

The present invention relates to communication technical field, particularly in a kind of multi-access systems, realize the method and apparatus of Internet Protocol (Internet Protocol, IP) flow mobility.

Background technology

1) multiple access and IP flow mobility

Multi-access technology makes terminal can access evolution block core net (Evolved Packet Core by different access systems simultaneously, and flow mobility technology makes terminal under the scene such as mobility, network congestion, dynamically the one or more IP stream of self current carrying transmission can be carried out seamless switching between different access systems EPC).IP flow mobility (IP Flow Mobility, IFOM; Internet Protocol, IP) technology is intended to study the seamless dividing technology that under multiple access scene, packet data network (Packet Data Network, PDN) connects and the switching of IP stream, the migration of IP stream and IP flow.

Such as, shown in Figure 1, in figure, terminal is in third generation partner program (3 ^rdgeneration Partnership Project, 3GPP) with under the common covering of non-3 gpp (Non-3GPP), according to carrier policy, user preference and traffic performance etc., by ip voice business (Voice over IP, VoIP) and conversational video banish 3GPP access (3GPP access) route, and web browsing, file transfer protocol (FTP) (File Transport Protocol, FTP) download and non-session video flowing are put into non-3 GPP access (Non-3GPP access) route.Subsequently, because non-3 GPP access is congested, and cause web browsing and non-session video flowing can not keep quality of service requirements, therefore, above-mentioned IP stream (i.e. web browsing and non-session video flowing) is moved to 3GPP and access route, specifically shown in Figure 2.

2) IP flow mobility scheme

At present, 3GPP network is selected by the access technology of access network discovery and selection (Access Network Discovery and Selection Function, ANDSF) strategy instruction subscriber equipment (User Equipment, UE) and access network.For the UE supporting IFOM, comprise the access technology according to priority arranged corresponding to IP stream and access network (optional) in ANDSF strategy, wherein IP stream uses five-tuple i.e. (protocol-identifier on source IP address, object IP address, source IP port numbers, object IP port numbers, IP layer) to limit.As: be the IP stream of 80 for destination slogan, preferential access technology is: WLAN>E-UTRAN, wherein, WLAN (wireless local area network) (Wireless Local Access Network, WLAN) demand fulfillment service set (Service Set Identification, SSID)=myOperator; If all IP streams of UE current transmission all pass through Long Term Evolution (Long Term Evolution, LTE) transmission, when UE can be linked into the WLAN of SSID=myOperator, above-mentioned IP stream should be moved to WLAN transmission.

As the same packet data network of UE (Packet Data Network, PDN) when the IP stream connected moves between multiple access technology, maintenance is still needed to anchor on same grouped data network gateway (PDN Gateway, PGW) to maintain continuity.In order to realize above-mentioned grappling, the target access system information needing the IP of mutual UE to flow between UE and PGW, has UE to trigger and network-triggered two kinds of modes at present:

A) UE triggers.Which realizes mutual by expanding to carry IP flow mobility rule (comprising rule mark, route filter (for describing IP stream), priority, routing address (corresponding connecting system information)) to the direct or indirect signaling between UE and PGW.Between UE and network, use network mobility management protocol proxy-mobile IP (Proxy Mobile IP, PMIP) and WLAN access network is credible time, a kind of scene of IP flow mobility process is shown in Figure 3 as follows, comprises the steps:

Step 31, UE are accessed by 3GPP simultaneously and non-3 GPP access is connected to core net, and a part of IP of this UE flows through 3GPP and accesses route, and all the other IP flow through non-3 GPP access network route;

Step 32, UE send an IP flow mobility to non-3 GPP access and trigger signaling, and this signaling comprises IP flow mobility routing rule, and this routing rule requires specific IP to flow through non-3 GPP access route.How this rule concrete realizes is determined by the agreement between UE and non-3 GPP access.

Step 33, non-3 GPP access send agent binding update (Proxy Binding Update to PGW, PBU) message, this message comprises the IP flow mobility routing rule that UE provides, concrete, this rule can pass through protocol configuration option (Protocol Configuration Option, PCO) carry, also can be realized by the mode of expansion PMIPv6 signaling.

Step 34, PGW are to "Policy and Charging Rules Function (Policy and Charging Rules Function, PCRF) entity sends IP connection access network (IP-Connectivity Access Network, IP-CAN) session modification message, this message carries the change of the mapping relations of the IP stream of UE and the connecting system of its correspondence;

Step 35, PCRF entity preserve the mapping relations of the stream of the IP after upgrading and connecting system thereof, and provide (QoS rules provision) message to non-3 GPP access transmission gateway control session (GW control session) and service quality (Quality of Service, QoS) rule;

Step 36, PGW return agent binding response (Proxy Binding Acknowledgement, PBA) message to non-3 GPP access, show that this IP flow mobility request is accepted;

Step 37, non-3 GPP access return IP flow mobility response (IP flow mobility ack) message to UE, show that this IP flow mobility request is accepted.

B), network-triggered.In which, IP flow mobility is by PCRF entity triggers, concrete: PCRF entity and strategy and charge execution function (Policy and Charging Enforcement Function, PCEF) need to preserve and safeguard that each IP flows the connecting system information of (per IP flows) granularity.PCRF entity determines that above-mentioned information by which connecting system route, and should be sent to PCEF by strategy and charging control (Policy and Charging Control, PCC) rule by each IP stream.Implementation procedure based on the IP flow mobility of such scheme is shown in Figure 4, comprises the steps:

Step 41, UE are accessed by 3GPP simultaneously and non-3 GPP access is connected to core net;

Step 42, PCRF entity receive the information of new business, carry out strategic decision-making and determine relevant IP to flow through non-3 GPP access route;

Step 43, PCRF entity initiate gateway control to non-3 GPP access and QoS rule provides process, and issue QoS rule to non-3 GPP access, this QoS rule comprises IP flow mobility routing rule;

Step 44, non-3 GPP access perform QoS rule, as reserved resource etc.;

Step 45, non-3 GPP access, after execution QoS rule, return response to PCRF entity;

Step 46, PCRF entity are initiated PCC rule to PGW and are provided process, and should pass through non-3 GPP access route to the relevant IP stream of PGW instruction.

3) connecting system resource and PCC framework;

PCC framework aims to provide a kind of strategy irrelevant with access technology and billing control method, is applicable to 3GPP access as universal mobile telecommunications system land radio access web (UMTS Terrestrial Radio Access Network, UTRAN; Universal Mobile Telecommunications System, UMTS), evolved universal mobile communication system land radio access web (Evolved UTRAN, and non-3 GPP access E-UTRAN), comprise Worldwide Interoperability for Microwave access interoperability (Worldwide interoperability for Microwave Access, WiMAX), WLAN etc.PCC framework comprises PCRF, PCEF, application function (Application Function, the node such as AF), AF is to the QoS demand of the business of transmission, carry out decision-making by PCRF entity and form PCC rule(PCC rule) be handed down to PCEF, PCEF performs this rule, data flow level QoS is mapped as carrying level QoS.This QoS demand is handed down to base station by core network control node, is carried out the scheduling of resource by base station according to the dispatching algorithm of setting.For the scene of non-3 GPP access technology core network access, the QoS demand needing non-3 GPP access node to have to issue according to PCRF entity carries out the mechanism ensured.Under having AF situation, PCC framework realizes the general principle of qos policy and charging control as shown in Figure 5.

As previously mentioned, current cordless communication network has developed into the heterogeneous communication system that comprises multiple access technology and access network.The key factor of communication system is distribution and the utilization of resource.In conventional art, the scheduling of resource of various Radio Access Network is carried out separately, as carried out resource coordination between eNB and WLAN access point (Access Point, AP).But, for heterogeneous communication system, separately the optimization collocation that scheduling of resource is unfavorable for resource between network is carried out to each access network.Therefore, intensively carry out scheduling of resource and control to have great importance for heterogeneous communication system.At present, the resource regulating method of optimization mainly contains following several:

A) based on UE.The core concept of these class methods is that UE scans ambient network (comprising Cellular Networks and wlan network etc.), obtains its relevant information as data rate, QoS ability, signal quality etc., carries out access network selection in conjunction with policy information.

B) Network Based.The core concept of these class methods is the resource informations being obtained access network by core net, and then adjusts access network selection strategy or carry out access control to the service request of UE.

But, existingly realize in the scheme of IP flow mobility, all based on semi-static ANDSF strategy, to select access technology and access network, owing to all not considering the real time resources service condition of access network, easily cause access network to occur congestion phenomenon, be unfavorable for unifying the resource that access network is limited, effectively dispatching and use.

Summary of the invention

Embodiments provide the method and apparatus realizing IP flow mobility in a kind of multi-access systems, can more effectively dispatch the resource that access network is limited and use.

Embodiments provide a kind of method realizing IP flow mobility in multi-access systems, the method comprises:

PCRF entity, based on the resource information of the access network of the current access of the terminal got, carries out the decision-making of IP flow mobility to described terminal;

The result of described IP flow mobility decision-making is informed to PCEF entity by described PCRF entity.

In force, described PCRF entity is according to the resource information obtaining access network with under type:

Described PCRF entity obtains the resource information of access network from access network resource management entity ANRME;

Wherein, store the resource information of third generation partner program 3GPP access network and the resource information of non-3 GPP access network in described ANRME, the resource information of each access network stored in described ANRME is designated unique key with this access network.

As the preferred obtain manner of one, described PCRF entity obtains the resource information of access network from described ANRME, specifically comprises:

Described PCRF entity receives the resource information of the access network that described ANRME initiatively sends; Or,

Described PCRF entity initiatively sends to described ANRME the request of acquisition, the described resource information obtaining request and be used for all access networks that ANRME stores described in acquisition request.

Based on the first preferred obtain manner above-mentioned, described PCRF entity receives the resource information of the access network that described ANRME initiatively sends, and specifically comprises:

Described PCRF entity receives the resource information of all access networks that described ANRME stores according to the described ANRME that the cycle of setting sends; And/or,

Described PCRF entity receives the resource information of the access network after the renewal of described ANRME transmission, and wherein, the resource information of the access network after renewal, after the resource information that have updated the access network that self stores, is sent to described PCRF entity by described ANRME.

Based on the first preferred obtain manner above-mentioned, as a kind of preferred process mode, described PCRF entity, according to the resource information of the access network based on the current access of the terminal got, carries out the decision-making of IP flow mobility to described terminal, specifically comprises:

Described PCRF entity, after the resource information receiving the access network that described ANRME sends, determines the resource information of the access network of the current access of terminal of described PCRF entity services;

Described PCRF entity, according to the resource information of the access network of the current access of described terminal, judges that the existing IP stream of described terminal is the need of mobile or termination transmission.

Based on the first preferred obtain manner above-mentioned, as another kind of preferred process mode, described PCRF entity, based on the resource information of the access network got, carries out the decision-making of IP flow mobility to described terminal, specifically comprises:

The parameter information of the existing IP stream of the terminal of described PCRF entity determination own services changes, or, receive the Trigger message of application function AF entity or the transmission of described PCEF entity;

Described PCRF entity, from the resource information of the access network got, determines the resource information of the access network of the current access of described terminal;

Described PCRF entity is according to the resource information of the access network of the current access of described terminal, judge that the existing IP stream of described terminal is the need of mobile or termination transmission, or, described PCRF entity, according to the resource information of the access network of the current access of described terminal, determines access technology and/or the access network of the newly-increased IP stream of the described terminal of transmission;

Wherein, the information of the existing IP stream for identifying described terminal and the parameter information of described existing IP stream renewal is carried in described Trigger message; Or, in described Trigger message, carry the information of the newly-increased IP stream for identifying described terminal and the parameter information of described newly-increased IP stream.

As the preferred obtain manner of another kind, described PCRF entity obtains the resource information of access network from described ANRME, specifically comprises:

The parameter information that described PCRF entity flows at the existing IP of the terminal determining own services changes, or, after receiving the Trigger message of AF entity or the transmission of described PCEF entity, obtain the resource information of the access network of the current connection of described terminal to described ANRME;

Concrete, described PCRF entity obtains the resource information of the access network of the current connection of described terminal to described ANRME, specifically comprise:

The information of carrying in the Trigger message of the contextual information of the described terminal that described PCRF entity is preserved according to self or described AF entity or the transmission of described PCEF entity, determines the mark of the access network of the current access of described terminal;

Described PCRF entity sends the solicited message of carrying the mark of the access network of the current access of described terminal to described ANRME, to obtain the resource information of the access network of the current access of described terminal.

Based on the preferred obtain manner of above-mentioned the second, described PCRF entity, based on the resource information of the access network got, carries out the decision-making of IP flow mobility to described terminal, specifically comprises:

Described PCRF entity is according to the resource information of the access network of the current access of described terminal, judge that the existing IP stream of described terminal is the need of mobile or termination transmission, or, described PCRF entity, according to the resource information of the access network of the current access of described terminal, determines access technology and/or the access network of the newly-increased IP stream of the described terminal of transmission.

In the embodiment of the present invention, described PCRF entity and described ANRME can independently dispose, and also can close and establish deployment, wherein:

If described PCRF entity and described ANRME independently dispose, then described PCRF entity is communicated by the standard interface defined with between described ANRME;

If described PCRF entity and described ANRME close establish deployment, then described PCRF entity is communicated by internal interface with between described ANRME.

In the embodiment of the present invention, the resource information of each access network comprises at least one information in the return link speed of the resource service condition of described access network, the available service quality QoS of described access network and described access network;

Wherein, the resource of described access network comprises interface-free resources and passback resource.

In the method that the embodiment of the present invention provides, PCRF entity is based on the resource information of the access network got, carry out the decision-making of IP flow mobility, because PCRF entity combines the resource information of the access network of the current access of terminal and the QoS demand of IP stream, to adjust the distribution of IP stream in each access network of the current access of this terminal of terminal, thus can more effectively dispatch the limited resources of each access network and use, access network can be avoided further to occur congested phenomenon, improve the service experience of user.

Embodiments provide a kind of PCRF entity, comprising:

Decision-making module, for the resource information of the access network based on the current access of the terminal got, carries out the decision-making of IP flow mobility to described terminal;

Notification module, for informing to PCEF entity by the result of described IP flow mobility decision-making.

Further, described PCRF entity also comprises:

Acquisition module, for obtaining the resource information of access network from ANRME; Wherein, store the resource information of third generation partner program 3GPP access network and the resource information of non-3 GPP access network in described ANRME, the resource information of each access network stored in described ANRME is designated unique key with this access network.

As the preferred obtain manner of one, described acquisition module specifically for:

Receive the resource information of the access network that described ANRME initiatively sends; Or,

Initiatively send to described ANRME the request of acquisition, the described resource information obtaining request and be used for all access networks that ANRME stores described in acquisition request.

Based on the first preferred obtain manner above-mentioned, described acquisition module specifically for:

Receive the resource information of all access networks that described ANRME stores according to the described ANRME that the cycle of setting sends; And/or,

Receive the resource information of the access network after the renewal of described ANRME transmission, wherein, the resource information of the access network after renewal, after the resource information that have updated the access network that self stores, is sent to described PCRF entity by described ANRME.

Based on the first preferred obtain manner above-mentioned, as a kind of preferred process mode, described decision-making module specifically for:

Receive the resource information of the access network that described ANRME sends at acquisition module after, determine the resource information of the access network of the current access of the terminal of own services; And the resource information of access network according to the current access of described terminal, judge that the existing IP stream of described terminal is the need of mobile or stop transmission.

Based on the first preferred obtain manner above-mentioned, as another kind of preferred process mode, described decision-making module specifically for:

Determine that the parameter information of the existing IP stream of the terminal of own services changes, or, receive the Trigger message of application function AF entity or the transmission of described PCEF entity; The resource information of the access network got from described acquisition module, determine the resource information of the access network of the current access of described terminal; And the resource information of access network according to the current access of described terminal, judge that the existing IP stream of described terminal is the need of mobile or termination transmission, or, according to the resource information of the access network of the current access of described terminal, determine access technology and/or the access network of the newly-increased IP stream of the described terminal of transmission;

As the preferred obtain manner of another kind, described acquisition module specifically for:

The parameter information flowed at the existing IP of the terminal determining own services changes, or, after receiving the Trigger message of AF entity or the transmission of described PCEF entity, obtain the resource information of the access network of the current connection of described terminal to described ANRME;

Concrete, described acquisition module specifically for:

According to the information of carrying in the contextual information of the described terminal of self preserving or the Trigger message of described AF entity or the transmission of described PCEF entity, determine the mark of the access network of the current access of described terminal; And send the solicited message of carrying the mark of the access network of the current access of described terminal to described ANRME, to obtain the resource information of the access network of the current access of described terminal.

Based on the preferred obtain manner of above-mentioned the second, described decision-making module specifically for:

The resource information of the access network of the current access of described terminal got according to described acquisition module, judge that the existing IP stream of described terminal is the need of mobile or termination transmission, or, the resource information of the access network of the current access of described terminal got according to described acquisition module, determines access technology and/or the access network of the newly-increased IP stream of the described terminal of transmission.

If described PCRF entity and described ANRME independently dispose, then the standard interface by defining between described acquisition module with described ANRME communicates;

If described PCRF entity and described ANRME close establish deployment, then communicated by internal interface between described acquisition module with described ANRME.

Embodiments provide another kind of PCRF entity, comprising:

Transceiver, at least one processor be connected with this transceiver and the memory be connected with transceiver and this at least one processor respectively, wherein:

Processor is arranged to the resource information of the access network based on the current access of the terminal got, and carries out the decision-making of IP flow mobility to terminal; And by transceiver, the result of IP flow mobility decision-making is informed to PCEF entity.

In force, transceiver is also arranged to the resource information obtaining access network from ANRME; Wherein, store the resource information of 3GPP access network and the resource information of non-3 GPP access network in ANRME, the resource information of each access network stored in this ANRME is designated unique key with this access network.

Accordingly, memory is arranged to and stores transceiver obtains access network resource information from ANRME.

As the preferred obtain manner of one, transceiver is configured specifically for the resource information that receives the access network that ANRME initiatively sends; Or initiatively send to ANRME the request of acquisition, this acquisition request is used for the resource information of all access networks that acquisition request ANRME stores.

Under this preferred obtain manner, transceiver be configured specifically for:

Receive the resource information of all access networks that ANRME stores according to the ANRME that the cycle of setting sends; And/or receive the resource information of the access network after the renewal of ANRME transmission, wherein, the resource information of the access network after renewal, after the resource information that have updated the access network that self stores, is sent to this PCRF entity by ANRME.

This preferred obtain manner, as a kind of preferred process mode, processor be configured specifically for:

Receive the resource information of the access network that ANRME sends at transceiver after, determine the resource information of the access network of the current access of the terminal of own services; And the resource information of access network according to the current access of terminal, judge that the existing IP stream of terminal is the need of mobile or stop transmission.

This preferred obtain manner, as another kind of preferred process mode, processor be configured specifically for:

Determine that the parameter information of the existing IP stream of the terminal of own services changes, or transceiver receives the Trigger message of application function AF entity or the transmission of PCEF entity; In the resource information of the access network stored from memory, determine the resource information of the access network of the current access of terminal; And the resource information of access network according to the current access of terminal, judge that the existing IP stream of terminal is the need of mobile or termination transmission, or, according to the resource information of the access network of the current access of terminal, determine access technology and/or the access network of the newly-increased IP stream of transmission terminal;

As the preferred obtain manner of another kind, processor be configured specifically for: change at the parameter information of existing IP stream of the terminal determining own services, or, after transceiver receives the Trigger message of AF entity or the transmission of PCEF entity, trigger transceiver obtains resource information from the access network of the current connection of terminal to ANRME;

Under this preferred obtain manner, processor is configured the information of carrying in the Trigger message sent specifically for: the contextual information of terminal preserved according to self or AF entity or PCEF entity, determines the mark of the access network of the current access of terminal; And trigger transceiver sends solicited message from the mark of the access network of the current access of carried terminal to ANRME, to obtain the resource information of the access network of the current access of terminal.

This preferred obtain manner, processor be configured specifically for: according to the resource information of the access network of the current access of the terminal stored in memory, judge that the existing IP stream of terminal is the need of mobile or termination transmission, or, according to the resource information of the access network of the current access of the terminal got, determine access technology and/or the access network of the newly-increased IP stream of transmission terminal.

Preferably, in the embodiment of the present invention, PCRF entity independently can be disposed with ANRME; Or PCRF entity can close with ANRME and establish deployment.

Further, if PCRF entity and ANRME independently dispose, then the transceiver of PCRF entity is communicated by the standard interface defined with between ANRME; If PCRF entity and ANRME close establish deployment, then the transceiver of PCRF entity is communicated by internal interface with between ANRME.

The PCRF entity that the embodiment of the present invention provides is based on the resource information of the access network got, carry out the decision-making of IP flow mobility, because PCRF entity combines the resource information of access network and the QoS demand of IP stream, to adjust the distribution of IP stream in each access network of the current access of this terminal of terminal, thus can more effectively dispatch the limited resources of each access network and use.

The ANRME that the embodiment of the present invention provides, comprising:

Memory module, for the resource information of storage and maintenance 3GPP access network and the resource information of non-3 GPP access network, wherein, the resource information of each access network that described memory module stores is designated unique key with this access network;

Communication module, for providing the resource information of access network to PCRF entity.

In force, described communication module specifically for:

The resource information of the access network that described memory module stores initiatively is sent to described PCRF entity; Or,

After the acquisition request receiving the transmission of described PCRF entity, send the resource information of all access networks that described memory module stores to described PCRF entity; Or,

After the solicited message receiving the transmission of described PCRF entity, send the resource information of the access network of the mark correspondence that described request information is carried to described PCRF entity.

Further, the resource information that described communication module initiatively sends access network to described PCRF entity specifically comprises:

According to the cycle of setting, the resource information of all access networks described memory module stored sends to described PCRF entity; And/or,

Have updated the resource information of stored access network in described memory module after, the resource information of the access network after renewal is sent to described PCRF entity.

In the embodiment of the present invention, PCRF entity independently can be disposed with ANRME, also can close with ANRME and establish deployment, wherein:

If described ANRME and described PCRF entity are independently disposed, then described communication module is communicated with described PCRF by the standard interface of definition;

If described ANRME and described PCRF entity close establish deployment, then described communication module is communicated with described PCRF entity by internal interface.

The embodiment of the present invention additionally provides another kind of ANRME entity, comprising:

Transceiver, at least one processor be connected with this transceiver and the memory be connected with this transceiver and this at least one processor respectively, wherein:

Memory is arranged to and stores the resource information of 3GPP access network and the resource information of non-3 GPP access network, and wherein, the resource information of each access network stored in this memory is designated unique key with this access network;

Processor is arranged to the resource information of each access network stored in maintenance memory;

Transceiver is arranged to the resource information providing access network to PCRF entity.

In force, transceiver be configured specifically for:

The resource information of the access network that memory stores initiatively is sent to PCRF entity; Or,

After the acquisition request receiving the transmission of PCRF entity, send the resource information of all access networks that memory stores to PCRF entity; Or,

After the solicited message receiving the transmission of PCRF entity, send the resource information of the access network of the mark correspondence that this solicited message is carried to PCRF entity.

Further, transceiver initiatively sends the resource information of access network to PCRF entity, specifically comprise:

According to the cycle of setting, the resource information of all access networks stored by memory sends to PCRF entity; And/or,

Have updated the resource information of stored access network in memory module 141 after, the resource information of the access network after renewal is sent to PCRF entity.

Further, if ANRME and PCRF entity is independently disposed, then transceiver is configured to be communicated with PCRF by the standard interface of definition;

If ANRME and PCRF entity closes and establishes deployment, then transceiver is configured to be communicated with PCRF entity by internal interface.

The ANRME that the embodiment of the present invention provides can provide the resource information of required access network to PCRF entity, with the resource information enabling PCRF entity consider the access network of the current access of terminal when carrying out the decision-making of IP flow mobility, thus can more effectively dispatch the limited resources of each access network and use.

Accompanying drawing explanation

Fig. 1 is based on the schematic diagram of carrier policy at different access systems routing IP stream in background technology;

Fig. 2 is the schematic diagram of the IP flow mobility that in background technology, network congestion triggers;

The IP flow mobility process schematic that Fig. 3 triggers for the UE provided in background technology;

The IP flow mobility process schematic of network-triggered of Fig. 4 for providing in background technology;

Fig. 5 realizes the principle schematic that qos policy and charging control for the PCC framework provided in background technology;

The method schematic diagram of IP flow mobility is realized in a kind of multi-access systems that Fig. 6 provides for the embodiment of the present invention;

ANRME and the PCRF entity that Fig. 7 provides for the embodiment of the present invention closes the network architecture schematic diagram established;

Fig. 8 provides a kind of preferred processing procedure schematic diagram for the embodiment of the present invention;

Fig. 9 provides another kind of preferred processing procedure schematic diagram for the embodiment of the present invention;

Figure 10 is the implementation procedure schematic diagram of embodiment one provided by the invention;

Figure 11 is the implementation procedure schematic diagram of embodiment two provided by the invention;

Figure 12 is the implementation procedure schematic diagram of embodiment three provided by the invention;

The schematic diagram of the PCRF entity that Figure 13 provides for the embodiment of the present invention;

The schematic diagram of the ANRME that Figure 14 provides for the embodiment of the present invention.

Embodiment

The PCRF entity of the embodiment of the present invention, based on the resource information of the access network of the current access of the terminal got, carries out the decision-making of IP flow mobility to terminal, thus can more effectively dispatch the limited resources of each access network and use.

Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.

Shown in Figure 6, realize the method for IP flow mobility in a kind of multi-access systems that the embodiment of the present invention provides, comprise the following steps:

Step 61, PCRF entity, based on the resource information of the access network of the current access of the terminal got, carry out the decision-making of IP flow mobility to terminal.

Concrete, PCRF entity, when carrying out the decision-making of IP flow mobility to terminal, in conjunction with the QoS demand that the resource information of the access network of the current access of this terminal and the IP of this terminal flow, carries out the decision-making of IP flow mobility to this terminal.

In the embodiment of the present invention, the existing IP stream (i.e. the IP stream of this terminal current transmission) that the IP flow mobility decision-making carried out terminal comprises this terminal carries out the decision-making of IP flow mobility and carries out the decision-making of IP flow mobility to the newly-increased IP stream of this terminal.

Concrete, the decision-making of IP flow mobility is carried out to the existing IP stream of this terminal and comprises and judge that the existing IP stream of this terminal is the need of moving or stopping transmitting; The newly-increased IP stream that the decision-making of IP flow mobility comprises for this terminal is carried out to the newly-increased IP stream of this terminal and selects suitable access technology and/or access network.

The result of IP flow mobility decision-making is informed to PCEF entity by step 62, PCRF entity.

Concrete, the result of this IP flow mobility decision-making, after completing the decision-making of IP flow mobility, is informed to PCEF entity by PCRF entity, and wherein, PCEF is generally deployed in PGW.

In the embodiment of the present invention, PCRF entity is based on the resource information of the access network got, carry out the decision-making of IP flow mobility, because PCRF entity combines the resource information of the access network of the current access of terminal and the QoS demand of IP stream, to adjust the distribution of IP stream in each access network of the current access of this terminal of terminal, thus can more effectively dispatch the limited resources of each access network and use, access network can be avoided further to occur congested phenomenon, improve the service experience of user.

In force, PCRF entity is according to the resource information obtaining access network with under type:

PCRF entity obtains the resource information of access network from access network resource management entity (Access Network Resource Management Entity, ANRME) place;

Wherein, ANRME is used for safeguarding the resource information of each access network, store the resource information of 3GPP access network and the resource information of non-3 GPP access network in this ANRME, the resource information of each access network that this ANRME stores is designated unique key with this access network.

In heterogeneous communication system, newly-increased ANRME is used for the resource information of each access network of storage and maintenance, store the resource information of 3GPP access network (as eNB, NodeB, Home eNodeB etc.) and the resource information of non-3 GPP access network (as WLAN, WiMAX etc.) in this ANRME, the be designated unique key of resource information with this access network in ANRME of each access network stores; Further, the mark of access network is different according to access network type difference, and for cellular network base stations, the mark of this access network can be cellular global identity; For WLAN access, the mark of this access network can be basic service set identification (Basic Service Set ID, BSSID), homogeneous extension service set (Homogenous ESS identifier, HESSID; Extended Service Set, ESS) etc.

In the embodiment of the present invention, the resource information of each access network stored in ANRME comprises at least one information in passback (backhaul) link rate of the resource service condition of this access network (as resource uses percentage), the available QoS of this access network and this access network; Wherein, the resource of each access network comprises interface-free resources and passback (backhaul) resource.

In the embodiment of the present invention, ANRME and PCRF entity can carry out direct interaction.ANRME and PCRF entity, when disposing, comprises following two kinds of modes:

First kind of way, ANRME can as independently functional entity deployment in network, and namely PCRF entity and ANRME independently dispose, and now, PCRF entity is communicated by the standard interface defined with between ANRME;

The second way, ANRME and PCRF entity closes and is located at a resource and policy management capability block strengthened, namely PCRF entity and ANRME close and establish deployment, now, PCRF entity is communicated by internal interface with between ANRME, this deployment way is shown in Figure 7, in figure, ANRME and PCRF entity closes and is located at a resource and policy management capability block strengthened, and is communicated by internal interface.

In force, PCRF entity obtains the resource information of access network from ANRME, specifically comprises following two kinds of modes:

Mode A, PCRF entity get the resource information of access network in advance from ANRME, and store, and during to carry out the decision-making of IP flow mobility at needs, based on the resource information of the access network stored, carry out the decision-making of IP flow mobility.

In force, mode A comprises following two kinds of modes further:

Mode A1, PCRF entity receive the resource information of the access network that ANRME initiatively sends;

Further, mode A1 comprises:

PCRF entity receives the resource information of all access networks that ANRME stores according to this ANRME that the cycle of setting sends; And/or,

PCRF entity receives the resource information of the access network after the renewal of ANRME transmission, and wherein, the resource information of the access network after renewal, after the resource information that have updated the access network that self stores, is sent to PCRF entity by this ANRME.

Mode A2, PCRF entity initiatively send to ANRME the request of acquisition, and this acquisition request is used for the resource information of all access networks that this ANRME of acquisition request stores.

Based on mode A1 and mode A2, PCRF entity after the resource information receiving the access network that this ANRME sends, store the resource information of each access network got.

Based on mode A1 and mode A2, in step 61, PCRF entity, according to the resource information of the access network based on the current access of the terminal got, carries out the decision-making of IP flow mobility to terminal, specifically comprises following two kinds of processing methods:

Method one, PCRF entity, after the resource information receiving the access network that ANRME sends, directly carry out the decision-making of IP flow mobility to the terminal of service; Be specially:

PCRF entity, after the resource information receiving the access network that ANRME sends, determines the resource information of the access network of the current access of the terminal of own services; And

PCRF entity, according to the resource information of the access network of the current access of this terminal, judges that the existing IP stream of this terminal is the need of mobile or termination transmission.

Further, if at least one IP stream of terminal current transmission needs mobile, then in step 62, target access network corresponding for the IP stream of the information (as this IP flows corresponding packet filter) and this needs movement that are used for the IP stream identifying needs movement is informed to PCEF entity by PCRF entity;

Need to stop transmission if at least one IP of terminal current transmission flows, then, in step 62, PCRF entity stops the message notice of the IP stream of transmission to PCEF entity by being used for identifying needs.

In force, PCRF entity is according to the resource information of the access network of the current access of terminal of following steps determination own services:

PCRF entity, according to the contextual information of each terminal stored, obtains the mark of all access networks of the current access of terminal; And

PCRF entity, according to the mark of all access networks of the current access of terminal, from the resource information of all access networks got, determines the resource information of the access network of the current access of terminal.

It should be noted that, the mark of all access networks of the current access of each terminal passes to PCRF entity when terminal sets up IP connection by each access network by PCEF entity (PGW).

The resource information of each access network reporting this ANRME to store for certain frequency to PCRF entity with ANRME below, is described the process that PCRF entity employing method one processes, shown in Figure 8, comprising:

Step 81, when PCRF entity receive ANRME send access network resource information after, the access network according to the current access of UE identifies, and can know the resource information of the access network of the current access of UE.

Step 82, PCRF entity are according to the algorithm of setting, and whether the access network of the current access of comprehensive descision UE meets the IP that UE transmits is flowed demand;

Need mobile if judged result is one or more IP to flow or stop, then performing step 83;

Otherwise, perform step 84;

Step 83, PCRF entity flow the PCEF(PGW of institute's grappling to needing IP that is mobile and/or that stop) send Indication message;

Wherein, this indication information comprises IP flow mobility Trigger message and/or IP flows termination messages, carry the information of IP stream and the target access information (destination access technologies and/or target access network) of correspondence that need movement in IP flow mobility Trigger message, IP flows in termination messages the information of carrying the IP stream needing to stop.

Step 84, end.

It should be noted that, in method one, PCRF entity can carry out the decision-making of IP flow mobility to each terminal of its service, also only can carry out the decision-making of IP flow mobility to the part terminal of its service, only can also carry out the decision-making of IP flow mobility to certain specific terminal.

Method two, PCRF entity, when receiving internal trigger or external trigger, carry out the decision-making of IP flow mobility to the IP stream of certain terminal, and wherein, external trigger is the Trigger message that AF entity or PCEF entity send; Be specially:

The parameter information of the existing IP stream of the terminal of PCRF entity determination own services changes (i.e. internal trigger, to change as QoS demand or CAMEL-Subscription-Information changes), or, receive the Trigger message of AF entity or the transmission of PCEF entity, wherein, this Trigger message is used for the existing IP stream of triggering terminal or increases the IP flow mobility decision-making of IP stream newly, specifically see 3GPP TS23.203 agreement;

PCRF entity, from the resource information of the access network got, determines the resource information of the access network of the current access of this terminal; And

PCRF entity is according to the resource information of the access network of the current access of terminal, judge that the existing IP stream of terminal is the need of mobile or termination transmission, or, PCRF entity, according to the resource information of the access network of the current access of terminal, determines access technology and/or the access network of the newly-increased IP stream of transmission terminal.

In the embodiment of the present invention, if the existing IP stream of triggering terminal or increase the IP flow mobility decision-making of IP stream newly, then carry in the Trigger message that AF entity or PCEF entity send to PCRF entity:

For the parameter information (QoS demand as upgraded) that information (packet filter of IP stream as existing in this) and this existing IP stream of the existing IP stream of marking terminal upgrade;

If the IP flow mobility decision-making of the newly-increased IP stream of triggering terminal, then carry in the Trigger message that AF entity or PCEF entity send to PCRF entity:

For the information (packet filter of IP stream as existing in this) of the newly-increased IP stream of marking terminal and the parameter information of this newly-increased IP stream.

Wherein, if the IP flow mobility decision-making of being flowed by the newly-increased IP of AF entity triggers terminal, then go back the IP address of carried terminal in the Trigger message that this AF entity sends to PCRF entity.

Mode B, PCRF entity, when needs carry out the decision-making of IP flow mobility to certain terminal, obtain the resource information of the access network of the current access of this terminal from ANRME; Be specially:

PCRF entity to change (i.e. internal trigger at the parameter information of existing IP stream of the terminal determining own services, to change as QoS demand or CAMEL-Subscription-Information changes), or, after receiving the Trigger message (i.e. external trigger) of AF entity or the transmission of PCEF entity, obtain the resource information of the access network of the current connection of this terminal to ANRME;

Wherein, Trigger message is used for the existing IP stream of triggering terminal or increases the IP flow mobility decision-making of IP stream newly, specifically see 3GPP TS23.203 agreement.

In force, if internal trigger, then the contextual information of this terminal that PCRF entity is preserved according to self determines the mark of the access network of the current access of this terminal; And PCRF entity sends the solicited message of carrying the mark of the access network of the current access of this terminal to ANRME, to obtain the resource information of the access network of the current access of this terminal;

If external trigger, then the information of carrying in the Trigger message that PCRF entity sends according to AF entity or PCEF entity, or the contextual information of this terminal that PCRF preserves according to self, determine the mark of the access network of the current access of terminal; And PCRF entity sends the solicited message of carrying the mark of the access network of the current access of this terminal to ANRME, to obtain the resource information of the access network of the current access of this terminal.

Based on mode B, in step 61, PCRF entity, according to the resource information of the access network based on the current access of the terminal got, carries out the decision-making of IP flow mobility to this terminal, specifically comprises:

PCRF entity is according to the resource information of the access network of the current access of this terminal, judge that the existing IP stream of this terminal is the need of mobile or termination transmission, or, PCRF entity, according to the resource information of the access network of the current access of this terminal, determines access technology and/or the access network of the newly-increased IP stream of this terminal of transmission.

Concrete, trigger if flowed by existing IP, namely PCRF entity self determines that the parameter information of the existing IP stream of this terminal changes, or, AF entity or PCEF entity trigger the IP flow mobility decision-making of the existing IP stream of this terminal by Trigger message, then PCRF entity is according to the resource information of the access network of the current access of this terminal, judges that the existing IP stream of this terminal is the need of mobile or termination transmission;

Further, if judged result needs mobile for this existing IP stream, then in step 62, target access network corresponding to the information (as this IP flows corresponding packet filter) and this existing IP stream that are used for identifying this existing IP stream is informed to PCEF entity by PCRF entity; If to be this existing that IP stream needs to stop transmission for judged result, then in step 62, PCRF entity will be used for identifying the message notice of this existing IP stream to PCEF entity; Otherwise, terminate this IP flow mobility decision-making.

Trigger if flowed by newly-increased IP, namely AF entity or PCEF entity trigger the IP flow mobility decision-making of the newly-increased IP stream of this terminal by Trigger message, then PCRF entity is according to the resource information of the access network of the current access of this terminal, determines access technology and/or the access network of the newly-increased IP stream of this terminal of transmission;

Further, in step 62, the transmission determined is increased newly the access technology of IP stream by PCRF entity and/or access network informs to the PCEF entity that this newly-increased IP flows institute's grappling.

Below in conjunction with specific embodiment, the process that PCRF entity adopts method two to process is described, shown in Figure 9, comprising:

Step 91, PCRF entity receive the triggering from outside or inside, and external trigger comprises the Trigger message from AF or PCEF, and internal trigger is determined by PCRF inside.Concrete trigger process is see 3GPP TS23.203 agreement.

Step 92, PCRF entity obtain the mark of the access network of the current access of UE from the UE context preserved or Trigger message, ask the resource information of the mark correspondence of each access network of the current access of UE to ANRME.

After obtaining this resource information, if step 91 has IP by UE flow triggering, then perform step 93a;

Trigger if flowed by newly-increased IP, then perform 93b.

According to the resource information of the access network obtained, step 93a, PCRF entity judge that current IP stream is the need of mobile or termination;

If so, then step 94 is performed;

If not, then step 95 is performed;

Step 93b, PCRF entity, according to the access network resource information obtained, are asked newly-increased IP stream selection access technology and/or access network.

The PCEF entity that step 94, PCRF entity flow institute's grappling to triggered IP sends indication information;

Concrete, if existing IP stream triggers, and the result of decision needs mobile for this existing IP stream, then this indication information is IP flow mobility Trigger message, carries this existing information of IP stream and target access information (destination access technologies and/or target access network) of correspondence in this IP flow mobility Trigger message;

If existing IP stream triggers, and the result of decision is this, and existing IP stream needs to stop transmission, then this Indication message is termination messages, and this IP flows in termination messages the information of carrying this existing IP stream;

If newly-increased IP stream triggers, then carry the information of this newly-increased IP stream in this indication information and be the access technology of its selection and/or access network.

Step 95, end.

Below in conjunction with following three specific embodiments, the process realizing IP flow mobility in the multi-access systems of the embodiment of the present invention is described.

In embodiment one, the present embodiment, the resource information of each access network that ANRME active reporting self stores, UE, by LTE eNB and WLAN AP core network access, supposes that the mark of corresponding access network is respectively: CGI_1, AP_1, all can unique identification LTE community and WLAN AP.IP stream 1, IP stream 2 are transmitted by eNB, and IP stream 3 is transmitted by WLAN AP.After ANRME reports the resource information of access network to PCRF, PCRF judges whether that needing to trigger IP drifts dynamic, and its process is shown in Figure 10, comprising:

Step 101, UE access EPC respectively by eNB and WLAN AP.

In this process, UE reports accessed cell ID CGI_1 and WLAN AP to identify AP_1, PGW to PGW and is reported PCRF entity, and PCRF entity preserves the mark of above-mentioned access network and the IP stream information by its transmission.

Step 102, ANRME report the resource information of access network to PCRF entity, comprising the resource information of the network that CGI_1 and AP_1 identifies, specific as follows:

CGI_1 flows the QCI packet loss of 2 correspondences from 10 for IP ^-3rise to 10 ^-2, other is constant;

The QCI packet loss that AP_1 flows 2 correspondences for IP is 10 ^-3.

Step 103, PCRF entity carry out strategy and judge (i.e. the decision-making of IP flow mobility); Be specially:

PCRF entity is according to the resource information of the access network obtained in step 101, and its UE contextual information preserved, the resource information of known UE present access network; In conjunction with the QoS demand needed for IP stream, PCRF entity can judge that the community that CGI_1 identifies no longer is suitable for transmission IP stream 2, and the WLAN AP that AP_1 identifies can transmit IP stream 2.

The PGW that step 104, PCRF entity flow 2 grapplings to IP sends IP-CAN session modification message, this IP-CAN session modification message comprises packet filter (packet filter for IP flow2) and target access instruction (target access) that IP flows 2 correspondences, represent that IP stream 2 should use WLAN to access transmission, in the present embodiment, target access is WLAN.

Embodiment two, in the present embodiment, under AF entity triggers, PCRF entity asks the resource information of access network to ANRME, and the prerequisite of the present embodiment and the difference of embodiment one are: PCRF entity asks the resource information of access network under AF entity triggers to ANRME.If AF entity sends new IP stream information to PCRF entity, PCRF entity obtains the resource information of access network under the Trigger message that AF entity sends triggers, and judges that new IP flows the access technology that should select, and its process is shown in Figure 11, comprising:

Step 111, UE access EPC respectively by eNB and WLAN AP.

Step 112a, AF entity send application or business information to PCRF entity, wherein comprise IP and flow 4(and new IP and flow) QoS demand, and UE IP address.

Step 112b, PCRF entity return response.

Step 113, PCRF obtain the resource information of the access network of the current access of UE to ANRME; Be specially:

PCRF entity can find corresponding UE contextual information according to the UE IP address received in step 111, and then knows the mark of access network of the current access of UE; PCRF entity uses this mark to obtain the resource information of corresponding access network to ANRME, and the resource information got is as follows:

The available time delay of QCI that CGI_1 flows 4 correspondences for IP is 100ms;

The available time delay of QCI that AP_1 flows 4 correspondences for IP is 200ms.

Step 114, PCRF entity carry out strategy and judge (i.e. the decision-making of IP flow mobility); Be specially:

PCRF entity, according to the QoS demand of the IP stream 4 obtained in CAMEL-Subscription-Information and step 112a, judges that this IP stream should use eNB to transmit.

The PGW that step 115, PCRF entity flow 4 grapplings to IP sends IP-CAN session modification message, wherein comprises packet filter and target access instruction (E-UTRAN) that IP flows 4 correspondences, represents that IP stream 4 should use E-UTRAN to access transmission.

Embodiment three, in the present embodiment, under PCEF entity triggers, PCRF entity asks the resource information of access network to ANRME, and the difference of the present embodiment prerequisite and embodiment one is: PCRF entity asks the resource information of access network under PCEF entity triggers to ANRME.PCEF entity sends the QoS demand (GBR is increased to 5M from 2M) of existing IP stream 3 renewal under UE triggers to PCRF entity, obtain the resource information of access network under the triggering of the Trigger message that PCRF entity sends at this PCEF entity, and judge whether IP stream 3 will move.Its process is shown in Figure 12, comprising:

Step 121, UE access EPC respectively by eNB and WLAN AP.

Step 122, UE send bearing resource request to core network control node (not shown), and wherein this bearing resource request comprises the IP stream packet filter of 3 and the QoS demand (GBR=5M kbps) of renewal.Core network control node sends bearing resource order to PGW, and wherein this bearing resource order comprises above-mentioned information.

Step 123, PCEF entity, under the triggering of step 122, send IP-CAN session modification Indication message to PCRF entity, and wherein this IP-CAN session modification Indication message comprises the IP stream packet filter of 3 and the QoS demand of renewal.

Step 124, PCRF entity, according to the mark of the access network in UE contextual information, to the resource information that ANRME obtains corresponding access network, are specially:

The load of CGI_1 reaches 85%;

The load of AP_1 also reaches 75%.

Step 125, PCRF entity carry out strategy and judge (i.e. the decision-making of IP flow mobility); Be specially:

This PCRF entity judges that the access network of the current access of this UE all can not meet the QoS demand of IP stream 3 renewal, determines to stop the transmission that this IP flows 3.

The PCEF entity that step 126, PCRF entity flow 3 grapplings to IP returns the response of IP-CAN session modification, and wherein this IP-CAN session modification respond packet is containing the instruction (Termination of IP flow3) stopping IP stream 3.

Said method handling process can realize with software program, and this software program can be stored in storage medium, when the software program stored is called, performs said method step.

Based on same inventive concept, a kind of PCRF entity is additionally provided in the embodiment of the present invention, the principle of dealing with problems due to this PCRF entity is similar to the method realizing IP flow mobility in above-mentioned multi-access systems, therefore the enforcement of this PCRF entity see the enforcement of method, can repeat part and repeats no more.

Shown in Figure 13, the PCRF entity that the embodiment of the present invention provides, comprising:

Decision-making module 131, for the resource information of the access network based on the current access of the terminal got, carries out the decision-making of IP flow mobility to terminal;

Notification module 132, for informing to PCEF entity by the result of IP flow mobility decision-making.

In force, this PCRF entity also comprises:

Acquisition module 133, for obtaining the resource information of access network from ANRME;

Wherein, store the resource information of 3GPP access network and the resource information of non-3 GPP access network in ANRME, the resource information of each access network stored in this ANRME is designated unique key with this access network.

As the preferred obtain manner of one, acquisition module 133 specifically for:

Receive the resource information of the access network that ANRME initiatively sends; Or initiatively send to ANRME the request of acquisition, this acquisition request is used for the resource information of all access networks that acquisition request ANRME stores.

Under this preferred obtain manner, acquisition module 133 specifically for:

This preferred obtain manner, as a kind of preferred process mode, decision-making module 131 specifically for:

Receive the resource information of the access network that ANRME sends at acquisition module 133 after, determine the resource information of the access network of the current access of the terminal of own services; And the resource information of access network according to the current access of terminal, judge that the IP stream of terminal current transmission is the need of mobile or stop transmission.

This preferred obtain manner, as another kind of preferred process mode, decision-making module 131 specifically for:

Determine that the parameter information of the existing IP stream of the terminal of own services changes, or, receive the Trigger message of application function AF entity or the transmission of PCEF entity; The resource information of the access network got from acquisition module, determine the resource information of the access network of the current access of terminal; And the resource information of access network according to the current access of terminal, judge that the existing IP stream of terminal is the need of mobile or termination transmission, or, according to the resource information of the access network of the current access of terminal, determine access technology and/or the access network of the newly-increased IP stream of transmission terminal;

Wherein, the parameter information that information and this existing IP stream for the existing IP stream of marking terminal upgrade is carried in this Trigger message; Or, in this Trigger message, carry the parameter information of information for the newly-increased IP stream of marking terminal and this newly-increased IP stream.

As the preferred obtain manner of another kind, acquisition module 133 specifically for:

The parameter information flowed at the existing IP of the terminal determining own services changes, or, after receiving the Trigger message of AF entity or the transmission of PCEF entity, obtain the resource information of the access network of the current connection of terminal to ANRME;

Under this preferred obtain manner, acquisition module 133 specifically for:

According to the information of carrying in the contextual information of the terminal of self preserving or the Trigger message of AF entity or the transmission of PCEF entity, determine the mark of the access network of the current access of terminal; And send the solicited message of mark of access network of carried terminal current access to ANRME, to obtain the resource information of the access network of the current access of terminal.

Under this preferred obtain manner, decision-making module 131 specifically for:

The resource information of the access network of the current access of terminal got according to acquisition module 133, judge that the existing IP stream of terminal is the need of mobile or termination transmission, or, the resource information of the access network of the current access of terminal got according to acquisition module, determines access technology and/or the access network of the newly-increased IP stream of transmission terminal.

Further, if PCRF entity and ANRME independently dispose, then the acquisition module 133 of PCRF entity is communicated by the standard interface defined with between ANRME; If PCRF entity and ANRME close establish deployment, then the acquisition module 133 of PCRF entity is communicated by internal interface with between ANRME.

Based on above-described embodiment, shown in Figure 14, embodiments provide a kind of access network resource management entity ANRME, comprising:

Memory module 141, for the resource information of storage and maintenance 3GPP access network and the resource information of non-3 GPP access network, wherein, the resource information of each access network that this memory module 141 stores is designated unique key with this access network;

Communication module 142, for providing the resource information of access network to PCRF entity.

In force, communication module 142 specifically for:

The resource information of the access network that memory module 141 stores initiatively is sent to PCRF entity; Or,

After the acquisition request receiving the transmission of PCRF entity, send the resource information of all access networks that memory module 141 stores to PCRF entity; Or,

Further, communication module 142 initiatively sends the resource information of access network to PCRF entity, specifically comprise:

According to the cycle of setting, the resource information of all access networks memory module 141 stored sends to PCRF entity; And/or,

Further, if ANRME and PCRF entity is independently disposed, then communication module 142 is communicated with PCRF by the standard interface of definition;

If ANRME and PCRF entity closes and establishes deployment, then communication module 142 is communicated with PCRF entity by internal interface.

Below in conjunction with particular hardware structure, the structure of the PCRF entity that the embodiment of the present invention provides, processing mode are described.

In the embodiment of Figure 13, the memory that PCRF entity comprises transceiver, at least one processor be connected with this transceiver and is connected with transceiver and this at least one processor respectively, wherein:

Under this first preferred obtain manner, transceiver be configured specifically for:

Based on the first preferred obtain manner above-mentioned, as a kind of preferred process mode, processor be configured specifically for:

As another kind of preferred process mode, processor be configured specifically for:

Wherein, the information of the existing IP stream for identifying this terminal and the parameter information of this existing IP stream renewal is carried in this Trigger message; Or, in this Trigger message, carry the information of the newly-increased IP stream for identifying this terminal and the parameter information of this newly-increased IP stream.

Based on the preferred obtain manner of above-mentioned the second, processor be configured specifically for: according to the resource information of the access network of the current access of the terminal stored in memory, judge that the existing IP stream of terminal is the need of mobile or termination transmission, or, according to the resource information of the access network of the current access of the terminal got, determine access technology and/or the access network of the newly-increased IP stream of transmission terminal.

Below in conjunction with particular hardware structure, the structure of the ANRME that the embodiment of the present invention provides, processing mode are described.

In the embodiment of Figure 14, the memory that ANRME entity comprises transceiver, at least one processor be connected with this transceiver and is connected with this transceiver and this at least one processor respectively, wherein:

In force, transceiver be configured specifically for:

Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.

The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.

Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims

1. realize a method for IP flow mobility in multi-access systems, it is characterized in that, the method comprises:

"Policy and Charging Rules Function PCRF entity, based on the resource information of the access network of the current access of the terminal got, carries out the decision-making of IP flow mobility to described terminal;

2. the method for claim 1, is characterized in that, described PCRF entity is according to the resource information obtaining access network with under type:

3. method as claimed in claim 2, is characterized in that, described PCRF entity obtains the resource information of access network from described ANRME, specifically comprises:

4. method as claimed in claim 3, is characterized in that, described PCRF entity receives the resource information of the access network that described ANRME initiatively sends, and specifically comprises:

5. method as claimed in claim 3, it is characterized in that, described PCRF entity, according to the resource information of the access network based on the current access of the terminal got, carries out the decision-making of IP flow mobility to described terminal, specifically comprises:

6. method as claimed in claim 3, it is characterized in that, described PCRF entity, based on the resource information of the access network got, carries out the decision-making of IP flow mobility to described terminal, specifically comprises:

7. method as claimed in claim 2, is characterized in that, described PCRF entity obtains the resource information of access network from described ANRME, specifically comprises:

8. method as claimed in claim 7, it is characterized in that, described PCRF entity obtains the resource information of the access network of the current connection of described terminal to described ANRME, specifically comprise:

9. method as claimed in claim 7, it is characterized in that, described PCRF entity, based on the resource information of the access network got, carries out the decision-making of IP flow mobility to described terminal, specifically comprises:

10. the method as described in claim 3,4 or 7, is characterized in that,

11. methods as described in any one of claim 1 ~ 9, it is characterized in that, the resource information of each access network comprises at least one information in the return link speed of the resource service condition of described access network, the available service quality QoS of described access network and described access network;

12. 1 kinds of "Policy and Charging Rules Function PCRF entities, is characterized in that, described PCRF entity comprises:

13. PCRF entities as claimed in claim 12, it is characterized in that, described PCRF entity also comprises:

14. PCRF entities as claimed in claim 13, is characterized in that, described acquisition module specifically for:

15. PCRF entities as claimed in claim 14, is characterized in that, described acquisition module specifically for:

16. PCRF entities as claimed in claim 14, is characterized in that, described decision-making module specifically for:

Receive the resource information of the access network that described ANRME sends at described acquisition module after, determine the resource information of the access network of the current access of the terminal of own services; And the resource information of access network according to the current access of described terminal, judge that the existing IP stream of described terminal is the need of mobile or stop transmission.

17. PCRF entities as claimed in claim 14, is characterized in that, described decision-making module specifically for:

18. PCRF entities as claimed in claim 13, is characterized in that, described acquisition module specifically for:

19. PCRF entities as claimed in claim 18, is characterized in that, described acquisition module specifically for:

20. PCRF entities as claimed in claim 18, is characterized in that, described decision-making module specifically for:

21. PCRF entities as described in any one of claim 13 ~ 20, is characterized in that,

22. 1 kinds of access network resource management entity ANRME, is characterized in that, this ANRME comprises:

23. ANRME as claimed in claim 22, is characterized in that, described communication module specifically for:

24. ANRME as claimed in claim 23, is characterized in that, described communication module specifically for:

25. ANRME as described in any one of claim 22 ~ 24, is characterized in that,