CN101945446B - Method and system for processing strategy conflict by user equipment - Google Patents

Abstract

The present invention discloses a method for user equipment to handle policy conflicts. The method includes: a user equipment (UE) receives a visited network discovery and selection function (VANDSF) entity and a home network discovery and selection function (HANDSF) entity and respectively downloads the After the policy is issued, based on the policy issued by the VANDSF entity, the received policies are integrated and then reordered; the UE implements sequential access to the access network according to the reordered policies. The present invention also discloses a system for user equipment to deal with policy conflicts. In the system, the conflict policy processing unit is used for UE to receive the policies issued by the VANDSF entity and the HANDSF entity respectively, and based on the policies issued by the VANDSF entity, the received Reorder after the received strategies are integrated. By adopting the method and system of the present invention, the conflict between the strategies provided by the HANDSF entity and the VANDSF entity can be resolved.

Description

Method and system for user equipment to handle policy conflicts

technical field

The present invention relates to the field of mobile communications, and in particular to a method and system for a user equipment (UE) to handle policy conflicts between two Access Network Discovery and Selection Function (ANDSF, Access Network Discovery and Selection Function) entities in a roaming scenario.

Background technique

The 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) Evolved Packet System (EPS, Evolved Packet System), by Evolved Universal Mobile Communications System Terrestrial Radio Access Network (E-UTRAN, Evolved Universal Terrestrial Radio Access Network) , Mobility Management Entity (MME, Mobility Management Entity), Serving Gateway (S-GW, ServingGateway), Packet Data Network Gateway (P-GW, Packet Data Network Gateway), Home Subscriber Server (HSS, Home Subscriber Server), policy and Charging rule function (PCRF, Policy and Charging Rules Function) entity and other supporting nodes. Wherein, the packet data network gateway may also be referred to as PDN GW for short.

The EPS system supports intercommunication with non-3GPP systems, wherein intercommunication with non-3GPP systems is realized through S2a/S2b/S2c interfaces, and the anchor point between 3GPP and non-3GPP systems is P-GW. Non-3GPP systems are divided into trusted non-3GPP IP access and untrusted non-3GPP IP access. Trusted non-3GPP IP access can be directly connected to P-GW through the S2a interface; untrusted non-3GPP IP access needs to be connected to P-GW through an evolved packet data gateway (ePDG, Evolved Packet Data Gateway). The interface between ePDG and P-GW is S2b; S2c provides user plane-related control and mobility support between UE and P-GW, and the mobility management protocol it supports is mobile IPv6 (DSMIPv6, Moblie IPv6 Support for Dual Stack Hosts and Routers).

In the EPS system, the MME is responsible for mobility management, non-access stratum signaling processing, and user mobility management context management; the S-GW is the access gateway device connected to the E-UTRAN. Data is forwarded between UTRAN and P-GW, and it is responsible for caching paging waiting data; P-GW is the border gateway between EPS and Packet Data Network (PDN, Packet Data Network), responsible for the access of PDN Functions such as forwarding data between PDNs; the PCRF entity is connected to the operator's network protocol (IP, Internet Protocol) service network through the Rx interface to obtain service information. In addition, the PCRF entity is also connected to the gateway device in the network through the Gx/Gxa/Gxc interface , responsible for initiating the establishment of IP bearer, ensuring the service quality (QoS, Quality of Service) of business data, and performing billing control.

The ANDSF entity is proposed in the EPS system of Rel-8. When the UE is registered in the home network or the equivalent home network, if there are 3GPP and non-3GPP access networks at the same time, or there are multiple non-3GPP access networks at the same time, the EPS can be provided to the UE through the ANDSF entity for its current location. access network information, so that the UE can select a suitable access network according to its own conditions. The ANDSF entity includes two functions: data management and control functions, which can provide auxiliary data for network discovery and selection according to operator policies. The ANDSF entity mainly provides two kinds of information, mobility policy between systems and access network discovery information. The inter-system mobility policy can be graded, for example: a general policy without restriction, or a policy applied according to the active state of the UE, etc., wherein the policy applied according to the active state of the UE can be activated (active) and idle ( Different policies specified in the idle) state. The access network discovery information mainly includes: access network type, such as wireless local area network (WLAN) or worldwide interoperability for microwave access (WiMAX); access network identifier, such as service set identifier (SSID, ServiceSet Identifier) in WLAN; Access public land mobile network (PLMN) information; access network priority, etc. Of course, the ANDSF entity can also limit the amount of information provided to the UE based on information such as the current location and capacity of the UE. According to the needs of the operator, the ANDSF entity can also provide two kinds of information at the same time, or only provide one kind of information.

Figure 1 is a schematic diagram of the architecture involving ANDSF entities. The ANDSF entity is directly connected to the UE through the S14 interface, and the S14 interface uses the OMA DM protocol. The S14 interface supports PULL and PUSH modes. Among them, the PULL mode is mainly: the mode in which the ANDSF entity is triggered to send network information to the UE after the UE actively applies to the network; and the PUSH mode is mainly: the mode in which the network actively triggers sending data to the UE . Among them, the OMA DM protocol is a set of management protocols specially used for mobile and wireless networks defined by the Open Mobile Alliance (OMA, Open Mobile Alliance). It is a branch of OMA. The OMA DM protocol is mainly used to manage various equipment terminals. .

Figure 2 is a schematic diagram of the workflow of using the ANDSF entity, which includes the following steps:

Step 101, UE has already connected to P-GW through 3GPP access network or non-3GPP access network.

Step 102, the UE discovers the ANDSF entity.

Here, step 102 is an optional step, indicated by a dotted line in the figure.

Step 103, the UE sends a network access message request to the ANDSF entity,

Here, the request carries UE capability information or UE location information.

Step 104, the ANDSF entity returns an access network message response to the above access network message request to the UE according to the location information reported by the UE.

Here, the response carries the access network information available at the UE's current location and the latest system mobility policy.

Step 105, UE performs network selection and handover decision.

Step 106, the UE initiates an inter-system handover according to its own needs.

Figure 3 is a schematic diagram of the architecture of the ANDSF entities involved in the roaming scenario. In Fig. 3, the UE is connected to the HANDSF entity and the VANDSF entity respectively through two S14 interfaces. Here, the HANDSF entity refers to the ANDSF entity of the home network; the VANDSF entity refers to the ANDSF entity of the visiting network. The HANDSF entity sends the relevant access network policy of the roaming UE to the UE; the VANDSF entity sends the relevant access network policy of the visited location to the UE.

Since the UE's access network policies are provided by the HANDSF entity and the VANDSF entity respectively, the access network policies provided by the HANDSF entity and the VANDSF entity are likely to conflict. For example: the access network strategy provided by the HANDSF entity is: WLAN/SSID=v, Priority=1; WLAN/SSID=z, Priority=2; and the access network strategy provided by the VANDSF entity is: WLAN/SSID=z, Priority =1; WLAN/SSID=v, Priority=2. And there are two principles for the access network strategy of the UE to deal with these two conflicts: 1. The decision right to choose the radio access technology (RAT, Radio Access Technology) lies with the visited network; 2. In the roaming scenario, the home network can express its network Priority preference, that is, the right to decide on the selection of the access network belongs to the network. Since the policy conflict received by the UE will cause the UE to fail to access the network in time, or the network it accesses is not the preferred one, which will affect the experience of the user using the UE. Resolution of policy conflicts.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a UE policy conflict handling method and system, which can resolve the conflict between the policies provided by the HANDSF entity and the VANDSF entity.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

A method for user equipment to handle policy conflicts, the method comprising:

After receiving the policies issued by the VANDSF entity with the discovery and selection function of the visited network and the HANDSF entity with the discovery and selection function of the home network, the user equipment reorders the received policies after integration based on the policies issued by the VANDSF entity; The user equipment implements sequential access to the access network according to the reordered policy.

Wherein, the sorting manner adopted for the re-ranking includes: sorting according to the radio access technology RAT first, and then sorting according to the access network.

Wherein, based on the strategy issued by the VANDSF entity, reordering the received strategies after integration specifically includes:

According to the type of the access network, the user equipment classifies the access network in the strategy issued by the VANDSF entity into the corresponding RAT category; according to the type of the access network, the Priority, sorting the RAT categories;

According to the sorted RAT category, the access network in the strategy issued by the HANDSF entity is classified into the corresponding RAT category; wherein, the access network is prioritized according to the access network in the strategy issued by the HANDSF entity Sort.

Wherein, when there is redundancy between the policy delivered by the VANDSF entity and the policy delivered by the HANDSF entity, the method further includes: adding the redundant access network policy to the corresponding RAT category.

Wherein, when there is redundancy between the policy issued by the HANDSF entity and the policy issued by the VANDSF entity, and the redundant access network policy does not belong to any RAT category in the policy issued by the VANDSF entity, the method further includes : Add the redundant access network policy to the corresponding new RAT category.

A system for user equipment to process policy conflicts, the system includes: a conflict policy processing unit on the user equipment side, and an access unit on the user equipment side; wherein,

The conflict policy processing unit is used for the user equipment to receive the policies issued by the VANDSF entity and the HANDSF entity respectively, and based on the policies issued by the VANDSF entity, reorder the received policies after integration; provide the reordered policies to said access unit;

The access unit is configured for the user equipment to implement sequential access to the access network according to the reordered policy.

Wherein, the conflicting policy processing unit further includes: a VANDSF policy receiving module, a HANDSF policy receiving module, and a conflicting policy processing module; wherein,

The VANDSF policy receiving module is used for the user equipment to receive the policy issued by the VANDSF entity and provide it to the conflict policy processing module;

The HANDSF policy receiving module is used for the user equipment to receive the policy issued by the HANDSF entity and provide it to the conflict policy processing module;

The conflict policy processing module is used for the user equipment to classify the access networks in the policies issued by the VANDSF entity into corresponding RAT categories according to the type of the access network; According to the priority in the strategy issued by the entity, the RAT category is sorted; according to the sorted RAT category, the access network in the strategy issued by the HANDSF entity is respectively classified into the corresponding RAT category; wherein, The above-mentioned access networks are sorted according to the priority of the access networks in the policy issued by the HANDSF entity.

Wherein, when there is redundancy between the policy issued by the VANDSF entity and the policy issued by the HANDSF entity, the conflict policy processing module is further used to add the redundant access network policy to the corresponding RAT under category.

Where there is redundancy between the policy issued by the HANDSF entity and the policy issued by the VANDSF entity, and the redundant access network policy does not belong to any RAT category in the policy issued by the VANDSF entity, the conflict The policy processing module is further used to add the redundant access network policy to the corresponding new RAT category.

Wherein, the conflict policy processing module further includes: a first classification and sorter and a second classification and sorter; wherein,

The first classifier and sorter is configured to receive the policy issued by the VANDSF entity from the VANDSF policy receiving module; the user equipment classifies the access networks in the policy issued by the VANDSF entity according to the type of the access network Classified to the corresponding RAT category; according to the priority of the type of the access network in the policy issued by the VANDSF entity, the RAT category is sorted, and the sorted RAT category is provided to the second classification classes and sorters;

The second classification and sorting device is used to receive the strategy issued by the HANDSF entity from the HANDSF strategy receiving module; according to the sorted RAT category, the access networks in the strategy issued by the HANDSF entity are respectively classified into Corresponding RAT category; wherein, the access network is sorted according to the priority of the access network in the strategy issued by the HANDSF entity.

After receiving the policies issued by the VANDSF entity and the HANDSF entity, the UE of the present invention integrates and reorders the received policies based on the policies issued by the VANDSF entity; the UE implements the access network according to the reordered policies. sequential access.

With the present invention, based on the strategies issued by the VANDSF entity, the received strategies are integrated and reordered, which can resolve the conflict between the strategies provided by the HANDSF entity and the VANDSF entity, and the UE implements the access network according to the reordered strategies. The sequential access enables the UE not only to access the network in a timely manner, but also to optimize the network that is accessed sequentially, thereby improving the user experience of using the UE.

Description of drawings

FIG. 1 is a schematic diagram of the architecture of an ANDSF entity in the prior art;

Fig. 2 is a schematic diagram of the workflow of using the ANDSF entity in the prior art;

FIG. 3 is a schematic diagram of an architecture involving ANDSF entities in a roaming scenario in the prior art;

Fig. 4 is the realization flow diagram of the method of the present invention;

FIG. 5 is a schematic diagram of a system architecture of an embodiment of UE handling policy conflicts in a roaming scenario according to the present invention.

Detailed ways

The basic idea of the present invention is: after the UE receives the policies issued by the VANDSF entity and the HANDSF entity respectively, based on the policies issued by the VANDSF entity, it reorders the received policies after integration; the UE implements the policy according to the reordered policies Sequential access to the access network.

The implementation of the technical solution will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figure 4, a method for a UE to handle policy conflicts, the method includes the following steps:

In step 201, the UE receives policies issued by the VANDSF entity and the HANDSF entity respectively.

Step 202, based on the policies issued by the VANDSF entity, reorder the received policies after integration.

Here, the received policy includes: the policy issued by the VANDSF entity, and the policy issued by the HANDSF entity.

Here, the sorting manner adopted for re-ranking includes: sorting by RAT first, and then sorting by access network.

In step 203, the UE implements sequential access to the access network according to the reordered policy.

For the above technical solution composed of steps 201 to 203, the specific process of step 202 includes:

Step 2021, according to the type of access network, the UE classifies the access network in the policy issued by the VANDSF entity into the corresponding RAT category; according to the type of access network, the priority in the policy issued by the VANDSF entity , to sort the RAT categories.

In step 2022, the UE classifies the access networks in the policies delivered by the HANDSF entity into corresponding RAT categories according to the sorted RAT categories.

Wherein, the access network is sorted according to the priority of the access network in the policy issued by the HANDSF entity.

Here, when there is redundancy between the policy delivered by the VANDSF entity and the policy delivered by the HANDSF entity, the method further includes: adding the redundant access network policy to the corresponding RAT category. At this time, there may be redundancy in the policies issued by the VANDSF entity, or redundancy in the policies issued by the HANDSF entity. However, no matter what the redundancy is, the redundant access network policy can find the corresponding RAT category, that is to say, the redundant access network policy belongs to the RAT category in the policy issued by the VANDSF entity.

Here, when there is redundancy between the policy issued by the HANDSF entity and the policy issued by the VANDSF entity, and the redundant access network policy does not belong to any RAT category in the policy issued by the VANDSF entity, the method further includes : Add the redundant access network policy to the corresponding new RAT category. At this time, there may be redundancy in the policy issued by the VANDSF entity, or redundancy in the policy issued by the HANDSF entity. However, no matter what kind of redundancy is, the redundant access network policy cannot find the corresponding RAT category, that is, the redundant access network policy does not belong to any RAT category in the policy issued by the VANDSF entity. It should be pointed out here that the new RAT category may be located at the end of the sorted RAT categories.

Method embodiment one:

The UE first accesses the EPS system through a 3GPP access network or a trusted/untrusted non-3GPP access network. In the roaming scenario, the UE obtains different policies A1 and A2 from the HANDSF entity and the VANDSF entity respectively. This embodiment mainly deals with the case that policy A1 has RAT redundancy. The process of this embodiment includes the following steps:

Step 301, according to the policy A2 delivered by the VANDSF entity, screen different RAT categories in the policy A2, and sort the RAT categories according to the priority of the policy A2.

Step 302, according to the sorting of RAT categories, sort the access networks of different RAT categories in the policy A1 into corresponding RAT categories according to their priorities.

Here, if the RAT category in policy A1 is redundant, the RAT category is added to the end of the sequence, and the access networks to which it belongs are sorted by priority.

Step 303, renumber the reordered policies to form new policies.

For the convenience of explanation, the present embodiment is exemplified below in conjunction with each sequence table, wherein, Table 1 is the sequence table of strategy A1; Table 2 is the sequence table of strategy A2; Table 3 is the sequence table of the RAT category; Table 4 is the sequence table based on the RAT category The sequence list of the access network is obtained by sorting; Table 5 is the sequence list of the priority of the access network obtained after reordering.

Access Network priority WLAN1 1 3GPP1 2 WIMAX1 3 WLAN2 4 3GPP2 5

Table 1

Access Network priority WLAN2 1 WLAN1 2 3GPP1 3

Table 2

1. Sorting the RATs in the strategy A2, the distinguished RAT strategies A2 are shown in Table 3, and the ranking of the RAT categories obtained from the strategy A2 is: RAT1, RAT2.

Access Network priority   Wireless Access Technology WLAN2 1 RAT1 WLAN1 2 RAT1 3GPP1 3 RAT2

table 3

2. The policy A1 and the network elements that distinguish different RATs are sorted according to the priority to the corresponding RATs, and the redundant RATs of the policy A1 are added to the last of the list. The results obtained according to this rule are shown in Table 4.

  Wireless Access Technology Access Network priority RAT1 WLAN1 -- WLAN2 -- RAT2 3GPP1 --

3GPP2 -- RAT3 WIMAX1 --

Table 4

3. Renumber the arranged strategies in sequence to form a new strategy as shown in Table 5.

Access Network priority WLAN1 1 WLAN2 2 3GPP1 3 3GPP2 4 WIMAX1 5

table 5

Method embodiment two:

The UE first accesses the EPS system through a 3GPP access network or a trusted/untrusted non-3GPP access network. In the roaming scenario, the UE obtains different policies A1 and A2 from the HANDSF entity and the VANDSF entity respectively. This embodiment mainly deals with the situation that policy A2 has access network redundancy. The process of this embodiment includes the following steps:

Step 401: According to the policy A2 delivered by the VANDSF entity, screen different RAT categories in the policy A2, and sort the RAT categories according to the priority of the policy A2.

Step 402, according to the sorting of RAT categories, sort the access networks of different RAT categories in the policy A1 into corresponding RAT categories according to their priorities.

Here, if the RAT category in policy A1 is redundant, the RAT category is added to the end of the sequence, and the access networks to which it belongs are sorted by priority.

Step 403, renumber the newly sorted policies to form new policies.

For the convenience of explanation, the present embodiment is exemplified below in conjunction with each sequence table, wherein, Table 6 is the sequence table of strategy A1; Table 7 is the sequence table of strategy A2; Table 8 is the sequence table of the RAT category; Table 9 is the sequence table for adding redundancy A sequence list of the access network is obtained based on the sorting of the RAT category after redundant strategies; Table 10 is another sequence list of the access network obtained based on the sorting of the RAT category after adding the redundant strategy; Table 11 is the access network obtained after reordering Sequence list of network access priority.

Access Network priority WLAN1 1 3GPP1 2 WLAN2 3 3GPP2 4

Table 6

Access Network priority WLAN2 1 WLAN1 2 3GPP3 3 WIMAX1 4 3GPP1 5

Table 7

1. Sorting the RATs in policy A2. The distinguished RAT policy A2 is shown in Table 8, and the order of the RAT categories obtained from the policy A2 is: RAT1, RAT2, RAT3.

Access Network priority   Wireless Access Technology WLAN2 1 RAT1 WLAN1 2 RAT1 3GPP3 3 RAT2 3GPP1 4 RAT2 WIMAX1 5 RAT3

Table 8

2. The policy A1 and the network elements that distinguish different RATs are sorted according to the priority to the corresponding RATs, and the redundant RATs of the policy A1 are added to the last of the list. The results obtained according to this rule are shown in Table 9.

Table 9

3. Add the redundant access network policy of policy A2 to the last one under the corresponding RAT. The results obtained according to this rule are shown in Table 10.

Table 10

4. Renumber the arranged strategies in sequence to form a new strategy as shown in Table 11.

Access Network priority WLAN1 1 WLAN2 2 3GPP1 3 3GPP2 4 3GPP3 5 WIMAX1 6

Table 11

A system for UE processing policy conflicts, the system includes a conflict policy processing unit on the UE side and an access unit on the UE side. Among them, the conflict policy processing unit is used for UE to receive the policies issued by the VANDSF entity and the HANDSF entity respectively, based on the policies issued by the VANDSF entity, reorder the received policies after integration; provide the reordered policies to the receiving terminal into the unit. The access unit is used for the UE to implement sequential access to the access network according to the received reordered policies.

Here, the conflicting policy processing unit further includes: a VANDSF policy receiving module, a HANDSF policy receiving module, and a conflicting policy processing module. Wherein, the VANDSF policy receiving module is used for the UE to receive the policy issued by the VANDSF entity and provide it to the conflicting policy processing module. The HANDSF policy receiving module is used for the UE to receive the policy issued by the HANDSF entity and provide it to the conflicting policy processing module. The conflict policy processing module is used for the UE to classify the access networks in the policies issued by the VANDSF entity into the corresponding RAT categories according to the type of the access network; in the policies issued by the VANDSF entity according to the type of the access network The priority of the RAT category is sorted; according to the sorted RAT category, the access network in the policy issued by the HANDSF entity is classified into the corresponding RAT category; among them, the access network is issued according to the HANDSF entity The access network priority in the policy is sorted.

Here, when there is redundancy between the policy issued by the VANDSF entity and the policy issued by the HANDSF entity, the conflicting policy processing module is further used to add the redundant access network policy to the corresponding RAT category.

Here, when there is redundancy between the policy issued by the HANDSF entity and the policy issued by the VANDSF entity, and the redundant access network policy does not belong to any RAT category in the policy issued by the VANDSF entity, conflict policy processing The module is further used to add the redundant access network policy to the corresponding new RAT category.

As for the conflict policy processing module, the specific implementation of the conflict policy processing module may further include: a first sorting and sorting unit and a second sorting and sorting unit. Wherein, the first classifying and sorting device is used to receive the policy issued by the VANDSF entity from the VANDSF policy receiving module; the UE classifies the access networks in the policy issued by the VANDSF entity according to the type of the access network into the corresponding RAT category: sort the RAT categories according to the priority of the access network type in the policy issued by the VANDSF entity, and provide the sorted RAT categories to the second classifier and sorter. The second classification and sorting device is used to receive the strategy issued by the HANDSF entity from the HANDSF policy receiving module; according to the sorted RAT category, the access network in the strategy issued by the HANDSF entity is respectively classified into the corresponding RAT category; Wherein, the access network is sorted according to the priority of the access network in the policy issued by the HANDSF entity. System embodiment:

As shown in FIG. 5 , the UE side of this embodiment includes: a VANDSF policy receiving module, a HANDSF policy receiving module, and a conflict policy processing module. Among them, the HANDSF entity sends the policy A1 to the HANDSF policy receiving module on the UE side; the VANDSF entity sends the policy A2 to the VANDSF policy receiving module on the UE side; the HANDSF policy receiving module and the VANDSF policy receiving module transmit their respective policies to the conflict policy processing module for processing, and the conflict policy processing module processes the two conflict policies.

Here, the specific processing of the conflicting policy processing module is as follows: First, according to the policy A2 issued by the VANDSF entity, the different RAT categories corresponding to the access network in the policy A2 are screened, and the RAT categories are sorted according to the priority of the policy A2. Then, according to the sorting of the RAT categories, the access networks corresponding to different RAT categories in the policy A1 are sorted according to the priority to the corresponding RAT categories. And, if there is a redundant access network policy between policy A1 and policy A2, add the redundant policy to the corresponding RAT category, for example, add the access network that is not in policy A1, and the policy Some access networks of A2 are added under different RAT categories. In the end, the rearranged access networks will be rearranged in order, and the priority will be rearranged in order, as a new policy for UE to decide, so that UE can access the access network sequentially according to the priority of the access network in the new policy. .

It should be pointed out here that the VPLMN involved in FIG. 3 and FIG. 5 refers to the secondary network; the HPLMN refers to the home network.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (9)

1. the method for a subscriber equipment processing policy conflict, is characterized in that, the method comprises:

After subscriber equipment receives the discovery of the discovery of visited network and selection function VANDSF entity and home network and strategy that selection function HANDSF entity issues respectively, the strategy that the VANDSF entity of take issues is foundation, rearrangement after the strategy received is integrated; Described subscriber equipment is realized the order access of Access Network according to the strategy after rearrangement;

The sortord that described rearrangement adopts comprises: first according to wireless access technology RAT sequence, then the mode sorted according to Access Network.

2. method according to claim 1, is characterized in that, the strategy that the described VANDSF of take entity issues is foundation, and after the strategy received is integrated, rearrangement specifically comprises:

Described subscriber equipment is according to the type of Access Network, and the Access Network in the strategy that the VANDSF entity is issued ranges respectively corresponding RAT classification; Priority in the strategy issued at the VANDSF entity according to the type of described Access Network, sorted to described RAT classification;

According to the RAT classification after sequence, the Access Network in the strategy that the HANDSF entity is issued ranges respectively corresponding RAT classification; Wherein, the Access Network priority in the strategy that described Access Network issues according to the HANDSF entity is sorted.

3. method according to claim 2, is characterized in that, when between the strategy that strategy that the VANDSF entity issues and HANDSF entity issue, having redundancy, the method further comprises: the access network policy of redundancy is augmented under corresponding RAT classification.

4. method according to claim 2, it is characterized in that, there is redundancy between the strategy that strategy that the HANDSF entity issues and VANDSF entity issue, and, when the access network policy of redundancy does not belong to any RAT classification in the strategy that the VANDSF entity issues, the method also further comprises: the access network policy of redundancy is augmented under corresponding newly-built RAT classification.

5. the system of a subscriber equipment processing policy conflict, is characterized in that, this system comprises: the Conflict Strategies processing unit of user equipment side and the access unit of user equipment side; Wherein,

Described Conflict Strategies processing unit, receive for subscriber equipment the strategy that VANDSF entity and HANDSF entity issue respectively, and the strategy that the VANDSF entity of take issues is foundation, rearrangement after the strategy received is integrated; Strategy after rearrangement is offered to described access unit;

Described access unit, realize the order access of Access Network according to the strategy after described rearrangement for subscriber equipment;

The sortord that described Conflict Strategies processing unit rearrangement adopts comprises: first according to wireless access technology RAT sequence, then the mode sorted according to Access Network.

6. system according to claim 5, is characterized in that, described Conflict Strategies processing unit further comprises: VANDSF strategy receiver module, HANDSF strategy receiver module and Conflict Strategies processing module; Wherein,

VANDSF strategy receiver module, receive for subscriber equipment the strategy that the VANDSF entity issues, and offer described Conflict Strategies processing module;

HANDSF strategy receiver module, receive for subscriber equipment the strategy that the HANDSF entity issues, and offer described Conflict Strategies processing module;

The Conflict Strategies processing module, the type for described subscriber equipment according to Access Network, the Access Network in the strategy that the VANDSF entity is issued ranges respectively corresponding RAT classification; Priority in the strategy issued at the VANDSF entity according to the type of described Access Network, sorted to described RAT classification; According to the RAT classification after sequence, the Access Network in the strategy that the HANDSF entity is issued ranges respectively corresponding RAT classification; Wherein, the Access Network priority in the strategy that described Access Network issues according to the HANDSF entity is sorted.

7. system according to claim 6, it is characterized in that, between the strategy that the strategy issued at the VANDSF entity and HANDSF entity issue, exist under the state of redundancy, described Conflict Strategies processing module, be further used for the access network policy of redundancy is augmented under corresponding RAT classification.

8. system according to claim 6, it is characterized in that, there is redundancy between the strategy that the strategy issued at the HANDSF entity and VANDSF entity issue, and the access network policy of redundancy does not belong under the state of any RAT classification in the strategy that the VANDSF entity issues, described Conflict Strategies processing module, be further used for the access network policy of redundancy is augmented under corresponding newly-built RAT classification.

9. system according to claim 6, is characterized in that, described Conflict Strategies processing module further comprises: the first classification and sorting unit and second are sorted out and sorting unit; Wherein,

First sorts out and sorting unit, for from described VANDSF strategy receiver module, receiving the strategy that the VANDSF entity issues; Described subscriber equipment is according to the type of Access Network, and the Access Network in the strategy that the VANDSF entity is issued ranges respectively corresponding RAT classification; Priority in the strategy issued at the VANDSF entity according to the type of described Access Network, sorted to described RAT classification, and the RAT classification after sequence is offered to described second sort out and sorting unit;

Second sorts out and sorting unit, for from described HANDSF strategy receiver module, receiving the strategy that the HANDSF entity issues; According to the RAT classification after described sequence, the Access Network in the strategy that the HANDSF entity is issued ranges respectively corresponding RAT classification; Wherein, the Access Network priority in the strategy that described Access Network issues according to the HANDSF entity is sorted.

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