WO2009135438A1

WO2009135438A1 - Method and equipment of obtaining information for residence reselecting

Info

Publication number: WO2009135438A1
Application number: PCT/CN2009/071652
Authority: WO
Inventors: 赵旸; 秦钧; 王济勇
Original assignee: 华为技术有限公司
Priority date: 2008-05-08
Filing date: 2009-05-06
Publication date: 2009-11-12
Also published as: CN101577949A

Abstract

a method and an equipment of obtaining an information for residence reselecting. The method may include the steps of that: an access network in the 2G or 3G system calculates to gain a residence reselecting information for the mobile terminal according to the subscriber type indication of the mobile terminal sent by a core network, and the residence reselecting information is sent to the mobile terminal. The method may also include the steps of that: the core network calculates to gain a residence reselecting information for the mobile terminal according to the subscriber type indication of the mobile terminal, and the residence reselecting information transparent transmission is sent to the mobile terminal by the access network. The method may also includes the steps of: the mobile terminal receives the subscriber type indication from the core network sent by the access network, and the residence reselecting information is obtained by calculating according to the subscriber type indication. Thus, various technical schemes is provided for obtaining the residence reselecting information. The switching information transmission and the switching technical scheme make the residence switching control in the case of the coexistence of the service switching cell and subscriber information clear.

Description

Method and apparatus for obtaining information for cell reselection This application claims to be submitted to the Chinese Patent Office on May 8, 2008, and the application number is 200810096466. 0, the invention is entitled "Method and apparatus for obtaining information for cell reselection" " , and submitted to the Chinese Patent Office on June 17, 2008, application number 200810128805. 9, the invention name is "method and device for obtaining information for cell re-election", the priority of two Chinese patent applications, The entire contents are incorporated herein by reference.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method for obtaining information for cell reselection, a method for transmitting switching information, a handover method, an access network device, a core network device, and a mobile terminal. Background technique

In the Long Term Evolution (LTE) system, priority information of Radio Access Technology/frequency (RAT/frequency) and Subscriber Type Indication are introduced. When the UE reselects a cell between access networks of different RATs or between cells of different frequencies of the code division system, the high priority cell is preferentially selected according to the stored priority information. When the access network controls the UE to switch between different cells, the cell handover is controlled according to the subscription information indication.

In the process of implementing the present invention, the inventors have found that the above prior art has at least the following problems: There is currently no solution for how the UE obtains priority information.

Moreover, in the current 2G/3G system, the UE handover between different cells is controlled by the access network according to the service-based handover information (for example, Service Handover IE) sent by the core network, and the subscription information indication is also used. In the cell handover process, after the introduction of the subscription information indication, the subscription information indicates how to coexist with the existing Service Handover IE, and there is currently no corresponding solution.

Summary of the invention

Embodiments of the present invention provide various methods and apparatuses for obtaining information for cell reselection, enabling a mobile terminal to obtain information for cell reselection, and improving acquisition of mobile terminals in different communication systems. The flexibility of information in cell reselection.

A method for obtaining information for cell reselection according to an embodiment of the present invention includes:

The access network in the 2G or 3G system obtains the subscription information indication of the mobile terminal from the message sent by the core network;

And the access network calculates, according to the subscription information, information obtained by the mobile terminal for cell reselection, and sends the information for cell reselection to the mobile terminal.

The access network device in the 2G/3G system provided by the embodiment of the present invention includes:

a first receiving module, configured to receive a message sent by a core network;

a first parsing module, configured to parse the message received by the first receiving module, to obtain an indication of the subscription information of the mobile terminal carried in the message;

a first calculating module, configured to calculate, according to the subscription information that is parsed by the first parsing module, information about the mobile terminal for cell reselection;

And a first sending module, configured to send, to the mobile terminal, information used by the first computing module for cell reselection.

Embodiments of the present invention provide a method and apparatus for transmission and handover of handover information, and clarify cell handover control in the case where service-based handover information and subscription information coexist.

A method for transmitting handover information provided by an embodiment of the present invention includes:

When the service-based handover information and the subscription information indication coexist, the core network determines to deliver the service-based handover information or the subscription information indication according to at least one of the access network version information, the network situation, and the user situation; or, the core network is configured according to The service-based handover information and the subscription information indicate that the service-based handover information or the subscription information indication is modified, and the modified service-based handover information or the subscription information indication is sent to the access network; or, the core network is unified. The service-based switching information and the value indicated by the subscription information are instructed, and the unified value-based service-based switching information and/or subscription information is indicated to the access network.

A handover method provided by an embodiment of the present invention includes:

The access network obtains the service-based handover information and the subscription information indication from the message sent by the core network; the access network is incapable of identifying the subscription information indication or determining that the service-based handover information and the subscription information indication are inconsistent Next, switching control according to service-based switching information; or When the access network can identify the service-based handover information and the subscription information indication and determine that the service-based handover information and the subscription information indication value are the same, perform handover control according to the subscription information indication or the service-based handover information. Or,

The access network performs switching control according to the latest received service-based switching information or subscription information indication; or

The access network performs handover control according to the handover information or the subscription information indication of the service that satisfies the current quality of service parameter; or

When the service-based handover information indicates a core network command or prohibits handover to a designated system, the access network performs handover control based on the service-based handover information.

A core network device provided by an embodiment of the present invention includes:

a decision module, configured to: when the service-based switching information and the subscription information indication coexist, determine, according to at least one of the access network version information, the network situation, and the user situation, the service-based switching information or the subscription information indication is delivered;

And a third sending module, configured to send, to the access network, the service-based switching information or the subscription information indication determined by the determining module.

An access network device provided by the embodiment of the present invention includes:

An obtaining module, configured to obtain service-based switching information and subscription information from a message sent by the core network;

a first switching module, configured to perform switching control according to the service-based switching information when the indication of the subscription information cannot be identified or when the indication that the service-based switching information and the subscription information are inconsistent is determined; or

When the service-based handover information and the subscription information indication can be identified and it is determined that the service-based handover information and the subscription information indication value are the same, the handover control is performed according to the subscription information indication or the service-based handover information; or

The handover control is performed according to the latest received service-based handover information or subscription information indication. According to the description of the foregoing technical solution, by using the access network to transmit information for cell reselection to the mobile terminal, the core network directly sends information for cell reselection to the mobile terminal, and the mobile terminal uses the subscription information to indicate active determination and determination. The information for cell reselection, while enabling the mobile terminal to obtain information for cell reselection, improves the information obtained by the mobile terminal in different communication systems for cell reselection Flexibility of information; By enabling the core network to send service-based handover information or subscription information indications according to the situation, by causing the access network to actively select service-based handover information or subscription information indications to control handover, the service switching cells are clarified Cell handover control in the case where the subscription information coexists. DRAWINGS

1 is a schematic flowchart 1 of obtaining information for cell reselection according to an embodiment of the present invention; FIG. 2 is a schematic flowchart 2 of obtaining information for cell reselection according to an embodiment of the present invention; FIG. 3 is a schematic diagram of Embodiment 2 of the present invention; FIG. 4 is a flow chart 4 of obtaining an information for cell reselection according to an embodiment of the present invention; FIG. 5 is a schematic diagram 1 of an access network device according to an embodiment of the present invention;

6 is a schematic diagram 1 of a core network device according to an embodiment of the present invention;

7 is a schematic diagram of a mobile terminal according to an embodiment of the present invention;

8 is a schematic diagram 2 of a core network device according to an embodiment of the present invention;

9 is a schematic diagram 3 of a core network device according to an embodiment of the present invention;

10 is a schematic diagram 4 of a core network device according to an embodiment of the present invention;

11 is a second schematic diagram of an access network device according to an embodiment of the present invention;

12 is a schematic diagram 3 of an access network device according to an embodiment of the present invention;

FIG. 13 is a schematic diagram 4 of an access network device according to an embodiment of the present invention.

detailed description

Embodiments of the present invention provide three different methods of obtaining information for cell reselection. Here, the information for cell reselection may be priority information of each cell for cell reselection of the mobile terminal, and of course, other decision information for secondary cell reselection. The following takes the priority information as an example to describe three different methods for obtaining information for cell reselection.

Method 1: The access network sends information for cell reselection to the mobile terminal.

In a 2G or (/) 3G system, the core network may send a message carrying the indication information of the mobile terminal to the access network. After receiving the message, the access network parses the message to obtain the message. Signing information instructions. After obtaining the indication of the subscription information, the access network may refer to the subscription information according to the subscription information. The calculation calculates the priority information. The access network may calculate and obtain the priority information according to the indication information of the subscription information. For example, the access network may calculate and determine the corresponding priority information according to the stored configuration policy and the subscription information indication; for example, access The network determines the priority information and the like corresponding to the subscription information indication of the mobile terminal according to the pre-stored correspondence information of the subscription information and the priority. The configuration policy here may also be referred to as a local configuration policy of the access network, and the local configuration policy of the access network may include an operator policy, an access network local network load, and the like. The embodiment of the present invention does not limit the specific implementation process of determining the priority information by the access network according to the indication information, and does not limit the specific content included in the local configuration policy. It should be noted that, in the embodiment of the present invention, the priority information determined according to the subscription information indication may be: priority information corresponding to each of the multiple cells of the mobile terminal. It should be noted that, in the embodiment of the present invention, the priority information is also referred to as a calculation from the correspondence relationship. In addition, it should be noted that "/" in the following description of the embodiment means "or".

The core network in the foregoing method 1 may send a message carrying the indication of the subscription information to the access network when the mobile terminal is in the idle mode. For example, in the location area/routing area update process, the attach/detach process, the mobile terminal is in the idle mode, and the core network can improve the existing location area/routing area update during the location area/routing area update process of the mobile terminal. The process is to send a message carrying the indication of the subscription information to the access network. At this time, the access network may also improve the existing location area/routing area update process in the location area/routing area update process of the mobile terminal. The mobile terminal sends the priority information; the core network may also send a message carrying the indication of the subscription information to the access network by improving the existing attach/detach process during the attach/detach process of the mobile terminal, at this time, the access network It is also possible to transmit priority information to the mobile terminal by improving the existing attach/detach procedure during the attach/detach process of the mobile terminal.

The core network in the foregoing method 1 may also send a message carrying the indication of the subscription information to the access network when the mobile terminal is in the active mode. For example, the mobile terminal is in an active mode during a dedicated connection procedure or handover between establishing a core network and an access network. The core network may send a message carrying the indication of the subscription information to the access network by improving the existing connection establishment process during the establishment of the connection process of the mobile terminal, and the core network may also improve the existing The handover procedure is to send a message carrying the indication of the subscription information to the access network. The mobile terminal activity mode described herein refers to the state in which the terminal is in progress of the service (CS and/or PS service).

In order to avoid changes to the existing network as much as possible, the above method may also be an active mode for the mobile terminal only, and the core network obtains the subscription information indication by using information provided from other networks. Examples are as follows: The mobile terminal is in the LTE network, and the eNodeB has obtained the indication of the subscription information. When the terminal switches/reselects from the LTE network to the GERAN network, the eNodeB sends the subscription information indication to the GSM core network through the handover/reselection procedure, thereby enabling the GSM core. The network obtains the information and determines the priority to send to the terminal through the information. After the access network in the first method obtains the subscription information indication in the active mode, the access network may send the priority information to the mobile terminal by improving the existing channel release procedure during the channel release process; of course, access The network can also send priority information to the mobile terminal by improving the existing connection establishment process and handover process.

In the foregoing method, the existing process is improved, that is, the new message is not added, but the existing message is extended, so that the extended message can carry the subscription information indication or the priority information, and the access network resolves the location/route. The message in the process of the area update process and the attach/detach process enables the access network to obtain the contract information indication. Of course, the embodiment of the present invention may also add a new message to the existing process, and the added message is dedicated to transmitting the subscription information indication or the priority information.

The location area/routing area update process in the foregoing method 1 may be initiated by the mobile terminal. For example, the mobile terminal initiates a location area update process when determining that the location area of the mobile station changes; for example, the mobile terminal is in its location area cycle. The location area update process is initiated when the updated timer expires.

The priority received by the mobile terminal may correspond to a timer for the mobile terminal to update its stored priority information. That is to say, the timing duration of the timer is the validity period of the priority information. When the timer value of the timer does not reach the timing duration, the priority information stored by the mobile terminal is valid, and can be used for cell reselection, and the timer value of the timer. When the time duration is reached, the priority information stored by the mobile terminal exceeds the validity period, and the priority information may be aged, for example, the priority information stored therein, or the priority information marked as expired. Whether the priority information exceeding the validity period can also be used for cell reselection can be determined by the mobile terminal according to actual conditions. For example, the mobile terminal can refer to the priority of the expired period without obtaining new priority information. Information is used for cell reselection.

The timer information corresponding to the priority information may be sent by the core network to the access network and forwarded by the access network to the mobile terminal, and the timer information may be sent to the access network together with the subscription information indication; the core network may also No timer information is sent to the access network, and the access network sends a timer message to the mobile terminal. Moreover, the timer information may be sent to the mobile terminal together with the priority information; in addition, the timer information may also be defined by the mobile terminal itself.

The mobile terminal can start a timer when the priority information is received, so that the timer starts counting. The mobile terminal can also start the timer according to the trigger condition after receiving the priority information, and the trigger condition can be a predetermined delay time or the like. The embodiment of the present invention does not limit the specific implementation manner of starting the timer.

In the description of the foregoing method 1, the operation performed by the access network may be performed by a BSC in a 2G network or an RNC in a 3G network, and the operation performed by the core network may be performed by a Mobile Switching Center in a 2G/3G network. The MSC) or the Serving GPRS Support Node (SGSN) is completed, and the MSC/SGSN can obtain the subscription information indication of the mobile terminal from the HSS. The execution subject of the operation may be specifically determined according to the actual situation of the network, and the embodiment of the present invention does not limit the specific expression form of the execution subject.

Method 1 enables the mobile terminal in the 2G/3G system to obtain information for cell reselection by causing the access network to transmit information for cell reselection to the mobile terminal.

Method 2: The core network sends information for cell reselection to the mobile terminal.

Method 2 can be applied to 2G/3G systems, and can also be applied to various communication systems such as Long Term Evolution (LTE).

The core network determines the priority information according to the subscription information indication of the mobile terminal. The core network may determine the priority information according to the subscription information indication. For example, the core network may calculate the priority information corresponding to the indication of the subscription information according to the stored configuration policy; for example, the core network according to the pre-stored subscription information. The correspondence information with the priority is used to determine the priority information and the like of the subscription information of the mobile terminal. The configuration policy here may also be referred to as a local configuration policy of the core network, and the local configuration policy of the core network may include an operator policy, a local network load of the core network, and the like. The embodiment of the present invention does not limit the specific implementation process of determining the priority information by the core network according to the subscription information of the mobile terminal, and does not limit the specific content included in the local configuration policy of the core network.

After determining the priority information, the core network may send a message carrying the priority information of the mobile terminal to the access network. After receiving the message, the access network does not parse the priority information in the message, but The priority information in the message is directly transmitted to the mobile terminal transparently.

The core network in the foregoing method 2 may send a message carrying the priority information to the mobile terminal through the access network when the mobile terminal is in the idle mode. For example, in the location area / routing area update process, attached / During the separation process, the mobile terminal is in an idle mode, and the core network may use the location area/routing area update procedure to send a message carrying the priority information to the access network during the location area/routing area update process of the mobile terminal. The access network transparently transmits the message to the mobile terminal; the core network may also use the attach/detach process to send a message carrying the priority information to the access network during the attaching/detaching process of the mobile terminal, at this time, The network transparently transmits the message to the mobile terminal.

The core network in the foregoing method 2 may also send a message carrying the priority information to the mobile terminal through the access network when the mobile terminal is in the active mode. For example, the mobile terminal is in an active mode during the establishment of a dedicated connection procedure or handover between the core network and the access network. The core network may send a message carrying the priority information to the mobile terminal through the access network during the establishment of the connection process of the mobile terminal; the core network may also use the handover process to access the mobile terminal during the handover process. The network sends a message carrying the priority information to the mobile terminal.

In order to avoid changes to the existing network as much as possible, the above method may also be an active mode for the mobile terminal only, and the core network obtains the subscription information indication by the information provided from other networks. For example, the mobile terminal is in the LTE network, and the eNodeB has obtained the indication of the subscription information. When the terminal switches/reselects from the LTE network to the GERAN network, the eNodeB sends the subscription information indication to the GSM core network through the handover/reselection process. Thereby, the GSM core network obtains the information, and the priority information is sent to the terminal through the subscription information indication.

In the foregoing method 2, the existing message is extended, so that the extended message can carry the priority information. Of course, embodiments of the present invention may also add new messages to the existing flow, the added messages being dedicated to transmitting priority information.

The location area/routing area update procedure in the foregoing method 2 may be initiated by the mobile terminal, as described in the method 1 above.

The priority information received by the mobile terminal may correspond to a timer, so that the mobile terminal updates its stored priority information. That is to say, the timing duration of the timer is the validity period of the priority information. When the timer value of the timer does not reach the timing duration, the priority information stored by the mobile terminal is valid, and can be used for cell reselection, and the timer value of the timer. When the time duration is reached, the priority information stored by the mobile terminal exceeds the validity period, and the priority information may be aged, for example, the priority information stored therein, or the priority information marked as expired. Whether the priority information exceeding the validity period can also be used for cell reselection can be determined by the mobile terminal according to actual conditions, for example, the mobile terminal The cell reselection can be performed with reference to the priority information of the expired period without obtaining new priority information.

The timer information corresponding to the priority information may be sent by the core network to the access network and transparently transmitted by the access network to the mobile terminal, and the timer information may be sent to the mobile terminal through the access network together with the priority information; The core network may also not send timer information to the access network, but the mobile terminal itself defines the timer information.

In the description of the foregoing method 2, the operation performed by the access network may be performed by the BSC in the 2G network, or may be performed by the eNodeB in the LTE system or the RNC in the 3G system, and the operation performed by the core network may be performed by the 2G/3G. The completion of the MSC/SGSN in the network can also be done by 匪E in the LTE system. The execution subject of the operation may be specifically determined according to the actual situation of the network, and the embodiment of the present invention does not limit the specific expression of the execution subject.

Method 2, by enabling the core network to send information for cell reselection to the mobile terminal, enables mobile terminals in different communication systems to obtain information for cell reselection, and improves mobile terminal acquisition for cell reselection in different communication systems. The flexibility of information.

Method 3: The core network sends a signing information indication to the mobile terminal.

Method 3 can be applied to 2G/3G systems, and can also be applied to various communication systems such as LTE. The core network may send a message carrying the subscription information indication of the mobile terminal to the access network. After receiving the message, the access network may not parse the subscription information indication in the message, and directly send the subscription information indication to the The mobile terminal; of course, the access network may also parse the subscription information indication in the message, and obtain and store the subscription information indication from the message.

After obtaining the indication of the subscription information, the mobile terminal may determine the priority information according to the indication of the subscription information. The mobile terminal can determine the priority information according to the subscription information indication. For example, the mobile terminal can calculate and determine the corresponding priority information according to the stored configuration policy and the subscription information indication. For example, the mobile terminal is pre-stored according to the The correspondence information of the subscription information and the priority information is used to determine the priority information and the like corresponding to the subscription information indication of the mobile terminal. The configuration policy here may also be referred to as a local configuration policy of the mobile terminal, and the local configuration policy of the mobile terminal may include an operator policy. Wait. The embodiment of the present invention does not limit the specific implementation process of determining the priority information by the mobile terminal according to the subscription information indication, and does not limit the specific content included in the local configuration policy of the mobile terminal.

The core network in the foregoing method 3 may send a message carrying the indication of the subscription information to the mobile terminal through the access network when the mobile terminal is in the idle mode. For example, in the location area/routing area update process and the attach/detach process, the mobile terminal is in an idle mode, and the core network may use the location area/routing area update process to access during the location area/routing area update process of the mobile terminal. The network sends a message carrying the indication of the subscription information to the mobile terminal. The core network may also send a message carrying the indication of the subscription information to the mobile terminal through the access network by using the attach/detach process during the attach/detach process of the mobile terminal.

The core network in the foregoing method 3 may also send a message carrying the indication of the subscription information to the mobile terminal through the access network while the mobile terminal is in the active mode. For example, in establishing a dedicated connection process between the core network and the access network, the mobile terminal is in an active mode. The core network may send a message carrying the indication of the subscription information to the mobile terminal through the access network during the establishment of the connection process of the mobile terminal; the core network may also access through the handover process in the handover process of the mobile terminal. The network sends a message carrying the indication of the subscription information to the mobile terminal.

In order to avoid changes to the existing network as much as possible, the above method may also be an active mode for the mobile terminal only, and the core network obtains the subscription information indication by the information provided from other networks. For example, the mobile terminal is in the LTE network, and the MME has obtained the indication of the subscription information. When the terminal switches/reselects from the LTE network to the GERAN network, the 匪E sends the subscription information indication to the GSM core network through the handover/reselection process. Thereby, the GSM core network obtains the information, and determines the priority to be sent to the terminal through the information.

In the foregoing method three, the existing message is extended, so that the extended message can carry the subscription information indication. Of course, embodiments of the present invention may also add a new message to the existing flow, the added message being dedicated to transmitting the subscription information indication.

The location area/routing area update process in the foregoing method 3 may be initiated by the mobile terminal, as described in the method 1.

The mobile terminal calculates the determined priority information to correspond to a timer, so that the mobile terminal updates its stored priority information. That is to say, the timing duration of the timer is the validity period of the priority information. When the timer value of the timer does not reach the timing duration, the priority information stored by the mobile terminal is valid, and can be used for cell reselection, and the timer value of the timer. When the time duration is reached, the priority information stored by the mobile terminal exceeds the validity period, and the priority information may be aged, for example, the priority of the storage is deleted. Level information, or priority information marked as expired, etc. Whether the priority information exceeding the validity period can also be used for cell reselection can be determined by the mobile terminal according to actual conditions. For example, the mobile terminal can refer to the priority of the expired period without obtaining new priority information. Information is used for cell reselection.

The timer information corresponding to the priority information may be sent by the core network to the access network and transparently transmitted by the access network to the mobile terminal, and the timer information may be sent to the mobile terminal through the access network together with the subscription information indication; The core network may also not send timer information to the access network, but the mobile terminal itself defines the timer information.

The mobile terminal in method 3 may start a timer when the subscription information indication is received and calculate the priority information, so that the timer starts counting. The mobile terminal may also start the timer according to the trigger condition after receiving the subscription information, and the trigger condition may be a delay scheduled time or the like. Embodiments of the present invention do not limit the specific implementation manner of starting a timer.

In the foregoing description of the third method, the operation performed by the access network may be performed by the BSC in the 2G network, or may be performed by the eNodeB in the LTE system or the RNC in the 3G system, and the operation performed by the core network may be performed by the 2G/3G. The completion of the MSC/SGSN in the network can also be done by 匪E in the LTE system. The execution subject of the operation may be specifically determined according to the actual situation of the network, and the embodiment of the present invention does not limit the specific expression of the execution subject.

Method 3: Using the core network to send a subscription information indication to the mobile terminal, the mobile terminal determines information for cell reselection according to the subscription information indication, so that the mobile terminal in different communication systems can obtain information for cell reselection, and improves The flexibility of the mobile terminal in different communication systems to obtain information for cell reselection.

Of course, the core network or the access network may also obtain information for cell reselection through other networks and send the information to the terminal. That is, the core network or the access network acquires priority information from other networks through a handover or reselection process, and then sends the information to the terminal. For example, the terminal starts to be in the LTE network and has learned the priority information. In the process of switching or reselecting from the LTE to the GSM cell, the priority information is sent from the LTE network to the core network of the target GSM network by using the handover related command. After entering the network, the core network or the access network sends the information to the terminal, and the process of sending and the process after receiving the information by the terminal are the same as the first method and the second method. The method avoids the existing network, for example, multiple modifications caused by the introduction of the priority of the GSM network, and the method for directly referring to the priority defined by other networks enables the terminal to know the priority letter. Interest.

The method for obtaining information for cell reselection will be described in detail below by taking the information for cell reselection in the 2G system as an example with reference to the accompanying drawings.

The process in which the BSS uses the existing message in the location area/routing area update process to obtain the subscription information indication and delivers the priority information to the MS is shown in FIG. 1 in the IDLE mode.

In FIG. 1, step 1-1, the MS (mobile station) sends a channel request to the BSC (base station controller) to trigger a location area update when it determines that the location area changes or the timer of the location area expires. Flow, go to steps 1-2.

Step 1-2: After receiving the channel request, the BSC returns an immediate assignment message (I A CMD) to the MS, to steps 1-3.

Step 1-3: After receiving the IMM ASS CMD, the BSC sends a Set Asynchronized Balance Mode (SABM) message to the BSC to step 1_4.

Step 1-4: After receiving the SABM, the BSC returns an Unnumbered Acknowledgement (UA) to the MS, and sends a Connection Request (Layer 3 Service Request, CR) to the MSC, to steps 1-5.

Step 1-5: After receiving the CR, the MSC returns a Connection Confirm (CC) message to the BSC to step 1-6.

Step 1-6: The MSC obtains an indication of the subscription information of the MS from the core network node of the HSS or other network, carries the indication of the subscription information in the Location Updating Response Messages, and sends the Location Updating Response Messages to the BSC. , to step 1_7. In addition, after the MSC sends the Location Updating Response Messages to the BSC, it also needs to send a Clear Command to the BSC. After transparently transmitting the Location Updating Response Messages, the BSC releases the channel between the MS and the MSC. Reply to the Clear Complete message. The Location Updating Response Message in the embodiment of the present invention may be a Location Updating Accept message, or may be a message sent by the core network to the access network, such as a Location Updating Reject message. That is to say, the location Updating Response Messages in the embodiment of the present invention refers to a message that responds to the location update of the mobile terminal, and the embodiment of the present invention does not limit the message name specifically represented by the location update response message. In addition, the core network may not include the information in the location update response message, but send priority information and timer information to the access network when the core network needs to tear down the connection between the core network and the access network. That is to say, in step 1-6, the location update response message sent by the core network does not carry the priority information and the timer information. In this way, in the final process of the location area update, the core network may carry the priority information and the timer information in the Clear Command message when the connection between the core network and the access network needs to be removed, and send the information to the access network. Clear Command message. That is to say, as long as the message that the core network can send related information to the access network before the access network sends the priority to the terminal can be applied to the method 1.

It should be noted that, in steps 1-6, the MSC may define a timer for the subscription information indication, and carry the subscription information indication together with the timer information in the location update response message, and send the message to the MSC.

Step 1-7: The BSC parses the received location update response message, obtains the subscription information indication, and determines the priority information according to the subscription information indication and the local configuration policy, where the priority information may be represented as a priority list of each cell. That is, the BSC locally pre-establishes and stores the mapping relationship between the subscription information indication/local configuration policy and the priority information of the mobile terminal. Local configuration policies can include operator policies and local network load information. The priority list may include priority information of cells of different RATs, and may also include priority information of messages of different groups or frequencies for a certain RAT. In addition, the BSC can define a timer for the priority information, to steps 1-8.

Step 1-8: The BSC carries the priority information and the timer information in the location update response message, and sends a location update response message to the MS.

In addition, the BSC may not carry the priority information and the timer information in the location update response message, but send the priority information and the timer information to the MS when the BSC needs to tear down the channel between the BSC and the MS. That is to say, in step 1-8, the location update response message sent by the BSC to the MS does not carry the priority information and the timer information. In this way, in the last process of the location area update, the BSC can carry the priority information and the timer information in the Channel Release message and send the Channel Release message to the MS when the channel between the BSC and the MS needs to be removed. That is to say, as long as the message that the terminal can obtain the priority information delivered by the network before the end of the location area/routing area update process is completed, the method 1 is applicable.

The MS may acquire and store priority information and timer information from the received location update response message, or the Channel Release message. The MS can trigger the timer after obtaining the priority information, and When the timer value of the timer reaches a predetermined length, the stored priority information is aged, for example, the stored priority information is deleted.

The location update response message in the existing location area update process is transparent to the BSC, and the BSC in FIG. 1 needs to parse the location update response message and obtain the subscription information indication, that is, the response of the location area update in FIG. The message is no longer transparent to the BSC. That is to say, this embodiment modifies the processing procedure of the BSC for the location area update process.

Of course, the MSC and the BSC in FIG. 1 can also use other downlink messages to carry the subscription information indication, or carry the priority information and the timer information. For example, the MSC carries the subscription information indication in the CC message and sends it to the BSC. Moreover, the MSC may transmit the subscription information indication to the BSC in the newly added message dedicated to the transmission subscription information; in addition, the BSC may carry the priority information and the timer information in the newly added message to the MS. The MSC and the BSC can use the newly added message at the same time, or only one party can use the newly added message, and the other party can use the existing downlink message. The specific implementation process using the newly added message transmission signing information indication, priority information, and timer information is exemplified in the following embodiments.

It should be noted that, FIG. 1 above shows that the MS obtains priority information by using the improved location area update procedure. In the case that the MS and the network support GPRS, the subscription information indication may also be performed through the routing area location update procedure. The transmission of the priority information and the timer information, so that the BSC obtains the indication of the subscription information, and enables the MS to obtain the priority and the timer information. The specific implementation process of the above information transmission by using the routing area location update process is similar to the implementation process shown in FIG. 1. The difference includes: The core network side can send the subscription information to the BSC by the Serving GPRS Support Node (SGSN). Instructions. In addition, in the case that there is a Gs interface between the MSC and the SGSN, the information may be transmitted through the joint location update process. The implementation process is similar to the implementation process shown in FIG. .

The process of obtaining the subscription information by the access network and obtaining at least one new message in the location area/routing area update process to enable the MS to obtain the priority information is shown in FIG. 2 when the mobile terminal MS is in the IDLE mode. Shown.

In Figure 2, step 2-1, when the MS determines that the location area changes or the timer of the location area expires, the MS sends a channel request to the BSC, to step 2-2.

Step 2-2: After receiving the channel request, the BSC returns I匪ASS CMD to the MS, to step 2_3. Step 2-3: After receiving the IMM ASS CMD, the BSC sends the SABM to the BSC to step 2_4.

Step 2-4: After receiving the SABM, the BSC returns a UA to the MS, and sends a CR to the MSC, to step 2-5. Step 2-5: After receiving the CR, the MSC returns the CC to the BSC to step 2-6.

Step 2-6: The MSC obtains the subscription information indication of the MS from the HSS, and carries the subscription information indication in the message dedicated to transmitting the subscription information indication, and sends the message to the BSC, to step 2-7. In addition, after the MSC sends a message dedicated to the transmission of the subscription information indication to the BSC, the location update response message and the Clear Command need to be sent to the BSC, and the BSC updates the response message at the transparent transmission location and sends an indication dedicated to the transmission subscription information. After the message, the MS is released with the channel between them and the Clear Complete message is replied to the MSC.

It should be noted that, in step 2-6, the MSC may define a timer for the subscription information indication, and carry the subscription information indication together with the timer information in a message dedicated to transmitting the subscription information indication, and send the message to the BSC. In addition, the location update response message sent by the MSC is transparently transmitted to the MS through the BSC. Moreover, the location update response message and the message dedicated to the transmission of the subscription information indication may be transmitted simultaneously or may be transmitted first.

Step 2-7: The BSC does not parse the location update response message received by the BSC, but parses the message dedicated to the transmission of the subscription information indication, obtains the subscription information indication, and determines the priority information according to the subscription information indication and the local configuration policy. The priority information may be represented as a priority list of each cell. That is to say, the BSC locally pre-establishes and stores the mapping relationship between the subscription information indication/local configuration policy and the priority information of the mobile terminal. Local configuration policies can include carrier policies and local network load information. The priority list may include priority information of cells of different RATs, and may also include priority information of messages of different groups or frequencies for a certain RAT. In addition, the BSC can define a timer for priority information, as described in steps 2-8.

Step 2-8: The BSC carries the priority information and the timer information in a message dedicated to transmitting the subscription information indication, and sends the message to the MS. It should be noted that the message sent by the BSC to the MS for the transmission priority information may be the same as or different from the message sent by the MSC and dedicated to the transmission of the subscription information indication in the name and message format.

The MS can acquire and store priority information and timer information from the received message dedicated to transmission priority information. The MS may trigger the timer after obtaining the priority information, and when the timer value reaches the predetermined duration, the MS stores the priority information, for example, deletes the storage. Priority information.

The location update response message in Figure 2 is transparent to the BSC. Although this embodiment adds a new message to the A port of the MSC and the BSC, the added message does not affect the system.

It should be noted that, in FIG. 2, the location area update process is used to enable the MS to obtain priority information. In the case that the MS and the network support GPRS, the subscription information may be indicated by the routing area location update process. The transmission of the level information and the timer information, so that the BSC obtains the signing information indication, enables the MS to obtain the priority and the timer information. The implementation process of the above information transmission by using the routing area location update process is similar to the implementation process shown in FIG. 2, and the difference includes: the core network side can send the subscription information to the BSC by the Serving GPRS Support Node (SGSN). Instructions. In addition, in the case that there is a Gs interface between the MSC and the SGSN, the information may be transmitted through the joint location update process. The implementation process is similar to the implementation process shown in Figure 2, and will not be described in detail.

It should be noted that, in the foregoing description of FIG. 2, the BSC may also carry the priority information and the timer information in the location update response message and send the information to the MS, and the BSC may also carry the priority information and the timer information in other The downlink message is sent to the MS, for example, the priority information and the timer information are carried in the Channel Release message and sent to the MS.

The specific implementation process of obtaining the priority information and the timer information shown in FIG. 1 and FIG. 2 above improves the existing location area/routing area update process. In fact, when the MS is powered on/off, the attach/detach process is performed. The attach/detach process is actually a location update process, except that the location update request (ie, channel request) in the attach/detach process is indicated. Used for attachment/separation. Optionally, the subscription information indication/priority information may also be transmitted only when the MS is powered on/off, that is, the MS obtains the priority information, or obtains the priority information and the timer information, and saves the information when the power is turned on/off. . Then, when the timer expires, or when the MS is turned on/off next time, the previously obtained priority information is deleted. The specific implementation process of using the attach/detach process to enable the MS to obtain the priority information is substantially similar to the above description for FIG. 1 and FIG. 2, and will not be described in detail herein.

The technical solutions described above for FIG. 1 and FIG. 2 are all obtained by the access network to obtain the subscription information and deliver the priority information. In actual applications, the access network may not be changed in the existing processes. Moreover, in the process of determining the priority information of the mobile terminal, the configuration policy of the entire PLMN may be considered regardless of factors such as a local dynamic configuration policy of the access network, such as a local load. Core network will be prioritized The implementation process of transmitting information to the mobile terminal through transparent transmission of the access network is shown in FIG. 3.

In Figure 3, step 3-1, when the MS determines that the location area changes or the timer of the location area expires, the MS sends a channel request to the BSC, to step 3-2.

Step 3: After receiving the channel request, the BSC returns I匪 ASS CMD to the MS, to step 3_3. Step 3-3: After receiving the IMM ASS CMD, the BSC sends the SABM to the BSC to step 3_4.

Step 3-4: After receiving the SABM, the BSC returns a UA to the MS, and sends a CR to the MSC, to step 3_5. Step 3-5: After receiving the CR, the MSC returns the CC to the BSC to step 3_6.

Step 3-6: The MSC obtains the subscription information indication of the MS from the HSS, and the MSC calculates the priority information corresponding to the indication information of the MS according to the mapping relationship between the local configuration policy or the subscription information indicating the pre-stored information. The local configuration policy includes local factors such as user subscription information indication, carrier policy, and local network load. The MSC defines a timer for the MS priority information.

Go to step 3-7, the MSC carries the priority information and the timer information in the location update response message, and sends a location update response message to the BSC, and the location update response message is transparently transmitted to the MS via the BSC, to step 3-8 .

Step 3-8, the MSC sends Clear Commando to the BSC.

Step 3-9: After the BSC updates the response message in the transparent transmission position, the channel between the MS and the MS is released, and steps 3-10 are performed. It should be noted that steps 3-8 and 3-9 can be parallel, that is, there is no order.

Step 3-10: The BSC replies to the MSC with a Clear Complete message.

The MS can obtain and store priority information and timer information from the received location update response message. The MS may trigger the timer after obtaining the priority information, and when the timer value reaches the predetermined duration, the MS aging the stored priority information, for example, deleting the stored priority information. Of course, the MS can also age the stored priority information when the location area is updated again. Moreover, the MS can also determine whether to delete the stored priority information based on whether the obtained priority information changes or the like.

The location update response message in Figure 3 is transparent to the BSC.

It should be noted that, in the foregoing description of FIG. 3, the MSC may also carry the priority information and the timer information in other downlink messages and send the data to the MS. In addition, FIG. 3 above shows that the MS uses the location area update procedure to obtain the priority information. In the case that the MS and the network support GPRS, the MSC can also pass the routing area. The location update process performs the transmission of the subscription information indication, the priority information, and the timer information, so that the MS obtains the priority and timer information. The implementation process of the above information transmission by using the routing area location update process is similar to the implementation process shown in FIG. 3, and the difference includes: the core network side can be sent by the Serving GPRS Support Node (SGSN) to the MS through the BSC. Priority information and timer information. In addition, in the case that there is a Gs interface between the MSC and the SGSN, the above information can be transmitted through the joint location update process. The implementation process is similar to the implementation process shown in FIG. 3, and will not be described in detail herein.

The technical solutions described above with respect to FIG. 1, FIG. 2, and FIG. 3 all deliver priority information and timer information by the network side, and the mobile terminal obtains priority information when the network side does not send the priority information. The flow is shown in Figure 4.

In Figure 4, step 4-1, the MS sends a channel request to the BSC when it determines that the location area changes or the timer of the location area expires, to step 4-2.

Step 4: After receiving the channel request, the BSC returns I匪 ASS CMD to the MS, to step 4_3. Step 4-3: After receiving the IMM ASS CMD, the BSC sends the SABM to the BSC to step 4_4.

Step 4-4: After receiving the SABM, the BSC returns a UA to the MS, and sends a CR to the MSC, to step 4-5. Step 4-5: After receiving the CR, the MSC returns CC to the BSC to step 4-6.

Step 4-6: The MSC obtains the subscription information indication of the MS from the HSS, and the MSC carries the subscription information indication in the location update response message, and sends the information to the MS via the BSC transparent transmission.

In step 4-6, the MSC may also define timer information for the subscription information indication, and carry the subscription information indication and the timer information in the location update response message, and send the data to the MS through the BSC transparent transmission, to step 4- 7 and steps 4-8.

Step 4-8: The MS obtains the subscription information indication from the received location update response message, or obtains the subscription information indication and the timer information. The MS determines the priority information according to the local configuration policy and the contract information indication calculation. The MS may trigger the timer after calculating the priority information, and when the timer value reaches the predetermined duration, the MS stores the priority information, for example, deletes the stored priority information. Of course, the MS can also age the stored priority information when the location area is updated again. Moreover, the MS can also determine whether to delete the stored priority information based on whether the priority information obtained again changes or the like.

Step 4-7, the MSC sends a Clear Command to the BSC, to step 4_9. It should be noted that 歩 Steps 4-7 and 4-9 can be parallel, that is, there is no order.

Step 4-9: After transparently transmitting the location update response message, the BSC releases the channel between the MS and the process, and steps 4-10 are performed.

Step 4-10: The BSC replies to the MSC with a Clear Complete message.

The location update response message in Figure 4 is transparent to the BSC.

It should be noted that, in the foregoing description of FIG. 4, the MSC may also carry the subscription information indication and the timer information in other downlink messages and send the data to the MS. In addition, FIG. 4 above shows that the MS uses the location area update procedure to obtain the priority information. In the case that the MS and the network support GPRS, the MSC can also perform the subscription information indication and the timer information through the routing area location update procedure. Transmit, so that the MS obtains the subscription information indication and timer information. The implementation process of the above information transmission by using the routing area location update process is similar to the implementation process shown in FIG. 4, and the difference includes: The core network side can be sent by the Serving GPRS Support Node (SGSN) to the MS through the BSC. Contract information indication and timer information. In addition, in the case that there is a Gs interface between the MSC and the SGSN, the above information can also be transmitted through the joint location update process, and the implementation process is similar to the implementation process shown in FIG. It will not be explained in detail here.

In the foregoing descriptions of FIG. 1 to FIG. 4, the existing processes are improved. The embodiments of the present invention may also use the newly defined process to transmit the subscription information indication, the priority information, and the timer information, and the implementation manner thereof is as shown in the foregoing figure. The descriptions of 1 to 4 are basically the same, and will not be described in detail here. In addition, the above-described steps in FIGS. 1 to 4 do not necessarily represent the order of execution between the steps.

In the above descriptions for FIG. 1 to FIG. 4, the MSs are all the priority information obtained in the IDEL mode, and the MS can also obtain the priority information in the ACTIVE mode.

When the MS is in the Active mode, there is a connection between the MS and the access network, and between the access network and the core network. Therefore, the core network can send the subscription information indication or the priority information to the access network or the MS at any time, and the access network can also send the priority information to the MS at any time. The following two specific implementation processes are taken as an example.

In the example 1, the CN (core network) in the PS domain or the PS domain sends an indication of the subscription information of the MS to the BSS through a downlink message when initially establishing a dedicated connection with the BSS. For example, the CN sends the subscription information indication of the MS in an Assignment Request, or a message such as DL-UNITDATA/CREATE-BSS-PFC. The BSS obtains the contract information indication from the received message, and determines the priority of the MS according to the contract information indication. Information, then, the BSS sends priority information to the MS. Since the MS does not use the priority information in the Active mode, the BSS can send the priority information to the MS when releasing the channel between the MS and the MS. For example, the priority information is carried in the Channel Release message and sent to the MS. . The BSS can control the cell handover of the MS according to the received subscription information indication.

For example, the CN in the CS domain or the PS domain carries the subscription information in the handover control command, and sends the handover control command to the BSS, and switches control commands such as Handover Request, PS Handover Request, and the like. The BSS obtains the subscription information indication from the received message, and calculates and determines the priority information for the cell reselection according to the subscription information indication, and then the BSS sends the priority information to the MS. Since the MS does not use the priority information in the Active mode, the BSS can send the priority information to the MS when releasing the channel between the MS and the MS. For example, the priority information is carried in the Channel Release message and sent to the MS. . The BSS can control the cell handover of the MS according to the received subscription information indication. For example, when the subscription information indicates that the MS mainly uses the voice service, the BSS will switch the MS to the GERAN cell instead of the E-UTRAN cell.

Regardless of the manner in which the mobile terminal obtains the priority information, the mobile terminal needs to store the priority information to perform cell reselection in the IDLE mode. The content of the mobile terminal update priority information is also mentioned in the above embodiment, and the process of updating the stored priority information of the mobile terminal in the IDLE mode will be described in detail below.

The priority information stored in the MS corresponds to a timer, and the location/routing area update process includes a regular update process (ie, a location/routing area update process triggered when the location area/routing area changes) and a periodic update process (ie, according to the location) / The routing area triggered by the update timer/routing area update process), the timer corresponding to the priority information, the regular update process, and the periodic update process may cause the MS to update its stored priority information.

When the MS obtains the priority information, the timer triggers the timer corresponding to the priority information, and the timer corresponding to the priority information starts to be timed. When the timer corresponding to the priority information times out, the priority information may be obtained again by triggering the location/routing area update process. If the obtained priority information is the same as the previously saved priority information, the MS may not store the priority information. The priority information is updated and stored. If the priority information obtained again is different from the previously saved priority information, the MS may update the stored priority information by using the obtained priority information. Of course, the MS may also not compare whether the two are the same, but directly update the previously stored priority information by using the obtained priority information. In addition, the MS may also delete the stored priority information when the timer corresponding to the priority information times out, and trigger the location/routing area update process to obtain the priority information again. In addition, the MS may also send a request for updating the priority information without triggering the location/routing area update process when the timer corresponding to the priority information times out, but wait until the next regular/periodic update process is performed. The request for updating the priority information can reduce the air interface signaling. When the MS needs to update its priority information and send a message, for example, an update request, the priority update indication may be added to the update request, or the network side mobile terminal needs to update the priority information by carrying the original priority information in the message. .

The timer corresponding to the priority information has not timed out, but the MS can obtain the priority information again through the update process due to the need for a regular update process or a periodic update process. If the priority information obtained again is the same as the previously saved priority information, the MS may not update and store the stored priority information. If the obtained priority information is different from the previously saved priority information, the MS may The stored priority information is updated with the priority information obtained again. Of course, the MS may also not compare the two with the same comparison, but directly update the previously stored priority information by using the obtained priority information. In addition, the MS may also delete the stored priority information when the timer corresponding to the priority information times out, and trigger the location/routing area update process to obtain the priority information again. Also, the MS can continue to use its previously obtained timer information to continue timing, or it can be timed using the again obtained timer information.

The timer corresponding to the priority information has not expired, but the MS may send the current priority information to the network side by sending a request for updating the priority information due to the routine update process or the periodic update process. The network side determines whether it is necessary to send priority information to the MS. That is, when the network side determines that the priority information currently stored by the MS needs to be changed, the network side sends new priority information to the MS. The network side can transmit new priority information and timer information to the MS in various manners as described in the above embodiments. The network side here may be the core network side or the access network side.

The MS in the embodiment of the present invention may also update its stored priority information with a newly defined process dedicated to priority update.

When the MS is in the ACTIVE mode, the access network may need to perform handover processing on the MS according to the actual situation of the network. Existing service-based handover information (eg, Service Handover IE) can be used for handover control, and subscription information indication can also be used for handover processing. The service-based handover information is basically based on service-related parameters, and the information in the service-based handover information may include a subscription letter on the mobile terminal. In the information indication, that is, the service-based handover information is an embodiment of the subscription information indication. In this case, the service-based handover information may no longer be considered in the handover process. However, if the information in the service-based handover information does not reflect or does not fully reflect the subscription information indication of the mobile terminal, for example, the content of the operator policy or the local network load is not included in the subscription information indication, the subscription information indication cannot be completely Instead of the existence of service-based handover information, in this case, the coexistence of the two occurs in the handover process, that is, both can simultaneously indicate the control of the access network to the mobile terminal cell handover.

In addition, when the network is upgraded, it may cause the old and new BSS, or the old and new CN to coexist. In this case, the service-based switching information needs to be retained to ensure the backward compatibility of the network. In this case, the same situation occurs.

When there are both Service Handover IE and subscription information indications in the communication network, the following two processing methods can be used.

Processing method 1: The case where the two networks coexist with the core network

Embodiment 1: The core network sends the subscription information indication and the service-based handover information at different times. This method determines which information is sent by the core network, and the BSS performs handover decision according to the currently received information, so as to prevent the BSS from receiving two Information cannot be processed when the two types of information conflict.

The core network can determine the information to be delivered based on the BSS. For example, the core network may determine whether to send the subscription information indication to the BSS or the service-based handover information according to the access network version information supported by the BSS: the CN may obtain the access version information supported by the BSS, if the CN learns that the BSS supports the pre-upgrade For the version, the CN only sends the service-based switching information to the BSS. If the CN knows that the BSS supports the upgraded version, the CN only sends the subscription information indication to the BSS.

The core network can also determine what kind of information to send based on other situations. For example, the core network can unify the values indicated by the service-based switching information and the subscription information according to the current network conditions (such as the current load situation, link quality, and the like) and the user's situation, and deliver any one of them to the BSS. When the values indicated by the service-based switching information and the subscription information cannot be unified and conflict with each other, the core network can also deliver the most suitable one of the two types of information according to the current network situation and the user. Alternatively, the core network may comprehensively consider the service-based handover information and the subscription indication information, and modify or set a reasonable service-based handover information or subscription information indication value, and send the modified service-based handover information or subscription information indication to the Access Network. Current most applicable information when network conditions or user conditions change The core network may re-issue the updated information. For example, the service-based switching information is originally delivered. When the communication environment changes, the core network may issue a subscription information indication.

The BSS performs a decision switch according to the latest issued instruction.

Of course, since these two pieces of information are all optional information, the core network only sends these two items when needed.

^ I Ft is self-defeating.

Since the service-based handover information and the subscription information indication do not occur in the access network of the first embodiment, the access network (ie, the BSS) directly performs the cell handover processing of the mobile terminal according to the information sent by the core network. Just fine. The access network can perform the cell handover by using the existing multiple cell handover process. The embodiment of the present invention does not limit the specific implementation process of the cell handover.

In the second embodiment, the core network simultaneously delivers the subscription information indication and the service-based handover information. The service-based handover information and the subscription information indication are all sent by the CN to the access network. Therefore, the CN can comprehensively consider the two. After the information is used and the value of the service-based switching information and the subscription information are consistent (that is, the values are consistent), the two types of information are simultaneously sent to the access network. The access network may choose to resolve one or both of the service-based handover information and the subscription information indication according to the actual situation. Since the values of the two are the same, no matter whether the access network chooses either of them, there is no problem that the switching control is inconsistent.

In the third embodiment, the core network simultaneously delivers the subscription information indication and the service-based handover information. The core network does not process the service-based handover information and the subscription information indication, and sends the service-based handover information to the access network. The subscription information is sent to the network, and the access network determines how to handle the coexistence of the two types of information.

Processing method 2: The case where the two networks coexist with the access network

Specific Embodiment 4: BSS processing the coexistence of two pieces of information

When the core network only delivers one of the information, the BSS performs a handover decision according to the delivered information. Of course, when the BSS makes a handover decision, it does not only refer to the delivered information, but also needs to refer to other information, such as local load.

When the core network sends the service-based switching information and the subscription information indication, but the two are issued in sequence, for example, the Service Handover IE is sent in the link assignment request, and the subscription information indication is sent in the handover request. The BSS can replace the decision to control the switching according to the order. For example, when the BSS first receives the Service Handover IE request indication to switch to the GERAN cell, and then receives the signing information indication When switching to the E-UTRAN cell, the BSS updates the handover decision, which is based on the last received message. Of course, the BSS can also comprehensively consider the different information received successively according to the current situation, and the detailed method is the same as the following.

When the core network simultaneously delivers service-based switching information and subscription information indications, the BSS can parse only one of the information according to the current environment.

If the BSS supports the pre-upgrade version, the ijBSS does not recognize the subscription information indication when receiving the service-based handover information and the subscription information indication sent by the MSC. Therefore, the BSS performs cell handover control only according to the service-based handover information.

If the BSS supports the upgraded version, the BSS can recognize both the service-based switching information and the subscription information indication sent by the core network. at this time,

If the BSS determines that the values indicated by the Servi ce Handover IE and the subscription information are consistent, the BSS performs cell handover control according to any one of the information;

If the BSS determines that the service-based switching information and the subscription information indicate different values, the following processing methods may be used:

The BSS preferentially performs cell handover control according to the service-based handover information, and determines the priority information of the MS according to the subscription information indication (of course, the determination of the priority information may also need to refer to other information).

The BSS can also consider the two types of information to adopt the most reasonable handover control method to adapt to the current situation (such as channel quality, local load, quality of service parameters, etc.), that is, according to the service-based handover information that satisfies the current service quality parameter or The subscription information indicates that the handover decision is performed, and the priority information of the MS is determined according to the indication of the subscription information;

The BSS may also select one of the information that is more suitable for the current situation to perform handover decision. For example, when the service-based handover information indicates that the core network commands the access network to switch to the UTRAN, and the subscription information indicates that the access network should switch to the GERAN, The BSS should follow the instructions of the core network to switch the handset to UTRAN; or when the service-based handover information indicates that the core network prohibits the access network from switching to UTRAN, and the subscription information indicates that the access network should switch to UTRAN, the BSS should comply with the service-based The switching information switches the mobile phone to other systems than UTRAN; and when the service-based handover information indicates that the access network should switch to UTRAN, and the subscription information indicates that the access network should switch to GERAN, the BSS can judge the mobile phone according to its own situation. Go to GE dust.

The above processing method 1 and processing method 2 may also be used in combination, and any of the above processing method groups Together, it can be used as long as it enables the network side to make the correct handover decision.

The above embodiments are applicable to the UE being in Active mode (i.e., in the case of CS service and/or PS service), and a dedicated connection is established between the UE, the access network and the core network. The service based handover information includes associated cells of CS and/or PS.

Both of the above processing methods clarify the cell switching control in the case where the service switching cell and the subscription information coexist.

The access network device provided by the embodiment of the present invention is described below with reference to FIG.

The access network device in FIG. 5 includes: a first receiving module 500, a first parsing module 510, a first computing module 520, and a first sending module 530.

The first receiving module 500 receives the message sent by the core network, where the message may be a message in the location/routing area update process, a message in the attach/detach process, or a message in the process of switching, for example, A receiving module 500 receives a location update response message sent by the MSC or a message dedicated to transmitting subscription information. Specifically, it is as described in the above method embodiment.

The first parsing module 510 parses the message received by the first receiving module 500 to obtain the subscription information indication of the mobile terminal carried in the message. For example, the first parsing module 510 parses the location update response message sent by the MSC, and transmits the parsed information indication obtained by the parsing to the first computing module 520. The first parsing module 510 can parse the subscription information of the mobile terminal from a plurality of messages, as described in the foregoing method embodiments.

The first calculating module 520 determines, according to the subscription information parsed by the first parsing module 510, the information for the cell reselection of the mobile terminal. The information for the cell reselection may be the priority information, and may be other decision information. The first calculating module 520 may calculate the priority information of the mobile terminal according to the local configuration policy in the access network, or may be based on the advance. The correspondence between the set subscription information and the priority information determines the priority information of the mobile terminal, which is specifically described in the foregoing method implementation manner.

The first transmitting module 530 determines the information for cell reselection to the mobile terminal first calculating module 520. The first sending module 530 can use the messages in the multiple flows to send information for cell reselection to the mobile terminal, for example, to send information for cell reselection to the information in the location area/routing area update procedure. The mobile terminal is specifically as described in the above method embodiment.

The core network device provided by the embodiment of the present invention will be described below with reference to FIG. The core network device may be a core network device in a 2G/3G system, such as an MSC, or an SGSN, or may be an LTE system. The core network equipment in the system, such as 匪E and so on.

The core network device in FIG. 6 includes: a second computing module 600 and a second transmitting module 610.

The second calculating module 600 determines the information of the mobile terminal for cell reselection according to the subscription information indication of the mobile terminal. The information for cell reselection may be priority information for a cell of the mobile terminal. The second computing module 600 may calculate the priority information of the mobile terminal according to the local configuration policy in the core network device, or determine the priority information of the mobile terminal according to the correspondence between the preset subscription information and the priority information, specifically, as described above. Description in the method embodiment.

The second sending module 610 carries the information for the cell reselection determined by the second calculating module 600 in the message, for example, is carried in the location update response message, and sends the message to the mobile terminal through transparent transmission of the access network. . Specifically, it is as described in the above method embodiment.

The mobile terminal provided by the embodiment of the present invention will be described below with reference to FIG.

The mobile terminal in FIG. 7 includes: a second receiving module 700, a second parsing module 710, and a third computing module 720.

The second receiving module 700 receives the message sent by the core network through the transparent transmission of the access network, and the message may be a location update response message or the like, which is specifically described in the foregoing method implementation manner.

The second parsing module 710 parses the message received by the second receiving module 700 to obtain the subscription information indication of the mobile terminal carried in the message. The second parsing module 710 transmits the contracted information indication obtained by the parsing to the third computing module 720.

The third calculating module 720 receives the subscription information indication transmitted by the second parsing module 710, and calculates and determines information for cell reselection according to the subscription information indication. The third calculation module 720 can calculate the corresponding priority information according to the local configuration policy stored in the mobile terminal, and the third calculation module 720 can also use the correspondence relationship information between the subscription information and the priority information stored in the mobile terminal. It is determined that the received subscription information indicates corresponding priority information and the like. Specifically, it is as described in the above method embodiment.

The core network device provided by the embodiment of the present invention will be described below with reference to FIG. 8, FIG. 9, and FIG. The core network device may be a core network device in a 2G/3G system, such as an MSC or an SGSN, or a core network device in an LTE system, such as an MME.

The core network device in FIG. 8 may include: a decision module 800 and a third sending module 810; the core network device in FIG. 9 may include: a modifying module 900 and a fourth sending module 910. Core network in Figure 10 The device may include: a unified module 1000 and a fifth transmitting module 1010.

The determining module 800 is configured to, when the service-based switching information and the subscription information indication coexist, decide to deliver the service-based switching information or the subscription information indication according to at least one of the access network version information, the network situation, and the user situation. The module can determine the information to be delivered based on the BSS. For example, according to the access network version information supported by the BSS, it is determined whether the indication information of the subscription information is sent to the BSS, or the service-based handover information is delivered: the access version information supported by the BSS can be obtained, and if the BSS is supported by the pre-upgrade version, the decision is made. The service-based switching information is sent to the BSS only. If the BSS supports the upgraded version, it is determined that only the subscription information indication is sent to the BSS. The module can also decide which of the two types of information to deliver based on the current network conditions and user conditions.

The third sending module 810 is configured to send, to the access network, the service-based switching information or the subscription information indication that is sent by the determining module.

The modification module 900 is configured to modify the service-based handover information or the subscription information indication according to the service-based handover information and the subscription information indication when the service-based handover information and the subscription information indication coexist. The module can comprehensively consider service-based handover information and subscription indication information, and modify or set reasonable service-based handover information or subscription information indication values.

The fourth sending module 910 is configured to send, to the access network, the service-based switching information or the subscription information indication that is modified by the modifying module.

The unified module 1000 is configured to unify the value indicated by the service-based handover information and the subscription information when the service-based handover information and the subscription information indication coexist. The module can unify the values indicated by the service-based switching information and the subscription information according to the current network conditions (such as the current load situation, link quality, and the like) and the user's situation, and deliver any one of them to the BSS.

The fifth sending module 1010 is configured to perform service-based switching information and/or subscription information indication after the unified value of the unified module under the access network.

The access network device provided by the embodiment of the present invention will be described below with reference to FIG. 11, FIG. 12 and FIG.

The access network device in FIG. 11 includes: an obtaining module 1100 and a first switching module 1 110.

The obtaining module 1100 is configured to obtain service-based handover information and subscription information indication from a message sent by the core network. The first switching module 1110 is configured to perform switching control according to the service-based switching information when the indication of the subscription information cannot be identified or when the indication that the service-based handover information and the subscription information indication are inconsistent; or When the service switching information and the subscription information indicate and determine that the service-based handover information and the subscription information indication value are the same, the handover control is performed according to the subscription information indication or the service-based handover information; or, according to the latest received service-based service The switching information or the contract information indicates that the switching control is performed.

When the core network sends the service-based switching information and the subscription information indication, but the two are issued in sequence, for example, the Service Handover IE is sent in the link assignment request, and the subscription information indication is sent in the handover request. The module can replace the decision to control the switching according to the order. For example, when the Service Handover IE request indicates that the handover to the GERAN cell is received, and then the subscription information is received indicating that the handover should be made to the E-UTRAN cell, the handover decision is updated, which is subject to the last received information. When the core network simultaneously delivers service-based handover information and subscription information indications, the module can resolve only one of the information according to the current environment.

If the pre-upgrade version is supported, the service information-based handover information and the subscription information indication sent by the MSC are not recognized, and the subscription information indication cannot be identified. Therefore, the handover control is performed only according to the service-based handover information.

If the upgraded version is supported, both the service-based switching information and the subscription information indication delivered by the core network can be recognized. at this time,

If it is determined that the value indicated by the Service Handover IE and the subscription information is consistent, the cell handover control is performed according to any one of the information;

If it is determined that the value indicated by the service-based switching information and the subscription information is different, the following processing method may be adopted:

The cell handover control is performed according to the service-based handover information, and the priority information of the MS is determined according to the subscription information indication.

The access network device in FIG. 12 includes: an obtaining module 1200 and a second switching module 1210.

The obtaining module 1200 is configured to obtain service-based switching information and a subscription information indication from a message sent by the core network.

The second switching module 1210 is configured to perform handover control according to the service-based handover information or the subscription information indication that meets the current quality of service parameter. The module can take into account the two types of information and adopt the most reasonable cut. The control method is adapted to the current situation (such as channel quality, local load, quality of service parameters, etc.), and the handover decision is made according to the service-based handover information or the subscription information indication that satisfies the current service quality of service parameter.

The access network device in FIG. 13 includes: an obtaining module 1300 and a second switching module 1310.

The obtaining module 1300 is configured to obtain service-based handover information and a subscription information indication from a message sent by the core network.

The third switching module 1310 is configured to perform handover control according to the service-based handover information when the service-based handover information indicates a core network command or prohibits switching to a designated system. The module may select a message that is more suitable for the current situation to perform handover decision. For example, when the service-based handover information indicates that the core network commands the access network to switch to UTRAN, and the subscription information indicates that the access network should switch to GERAN, Switching the handset to UTRAN according to the command of the core network; or when the service-based handover information indicates that the core network prohibits the access network from switching to UTRAN, and the subscription information indicates that the access network should switch to UTRAN, the service-based handover information should be followed. The mobile phone switches to other systems than the UTRAN. When the service-based handover information indicates that the access network should switch to the UTRAN, and the subscription information indicates that the access network should switch to the GERAN, the mobile phone can be handed over to the GERAN according to its own situation.

The method and apparatus provided by the embodiments of the present invention determine that the core network determines whether to send the service-based handover information or the subscription information indication according to various situations, and controls the handover by causing the access network to actively select the service-based handover information or the subscription information indication. The cell handover control in the case where the service switching cell and the subscription information coexist is clarified, so that the cell handover control in the case where the service switching cell and the subscription information coexist is normally performed.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary hardware platform, and of course, all can be implemented by hardware, but in many cases, the former is better. Implementation. Based on such understanding, all or part of the technical solution of the present invention contributing to the background art may be embodied in the form of a software product, which may be stored in a storage medium such as a ROM/RAM, a magnetic disk, an optical disk, or the like. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention or portions of the embodiments.

While the invention has been described by the embodiments of the invention, the invention And change.

Claims

Claim

A method for obtaining information for cell reselection, comprising:

2. The method according to claim 1, wherein the obtaining, by the access network, the subscription information indication of the mobile terminal from the message sent by the core network comprises:

The access network is sent from the core network in at least one of a location area update process, a routing area update process, an attach process, a separation process, a dedicated connection process between the core network and the access network, and a handover process. The message of obtaining the subscription information of the mobile terminal is obtained in the message.

The method according to claim 2, wherein the transmitting the information for cell reselection to the mobile terminal comprises:

In at least one of a location area update process, a routing area update process, an attach process, and a detach process, the access network sends the information about the cell reselection to the mobile terminal in idle mode. Message; and/or

In the channel release procedure, the access network transmits a message carrying the information for cell reselection to the mobile terminal in active mode.

4. The method of claim 3 wherein:

The message sent by the core network includes: a location area update process, a routing area update process, an attach process, a separation process, a dedicated connection process, or a message during a handover process; or

The message sent by the core network includes: a message dedicated to transmitting the indication of the subscription information; the message sent by the access network to the mobile terminal includes: a location area update process, a routing area update process, an attach process, a separation process, or a message during channel release; or

The message sent by the access network to the mobile terminal includes a message dedicated to transmitting the information for cell reselection.

The method according to claim 1 or 2 or 3 or 4, wherein the method further comprises: the access network transmitting timer information to the mobile terminal, the timing duration of the timer being the use Yu The validity period of the information of the cell reselection, and the timer information is obtained by the access network from the message sent by the core network, or customized by the access network.

6. A method for transmitting handover information, the method comprising:

When the service-based handover information and the subscription information indication coexist, the core network determines to deliver the service-based handover information or the subscription information indication according to at least one of the access network version information, the network situation, and the user situation; or the core network according to the The service-based handover information and the subscription information indicate that the service-based handover information or the subscription information indication is modified, and the modified service-based handover information or subscription information indication is sent to the access network; or the core network is unified based on the service. The value indicated by the handover information and the subscription information is not indicated to the service-based handover information and/or subscription information after the unified value is set to the access network.

7. A handover method, the method comprising:

The access network obtains the service-based handover information and the subscription information indication from the message sent by the core network; the access network is incapable of identifying the subscription information indication or determining that the service-based handover information and the subscription information indication are inconsistent Next, switching control according to service-based switching information; or

When the access network can identify the service-based handover information and the subscription information indication and determine that the service-based handover information and the subscription information indication value are the same, perform handover control according to the subscription information indication or the service-based handover information. ; or

The access network performs handover control according to handover information or subscription information indication of a service that satisfies the current quality of service parameter; or

8. An access network device in a 2G or 3G system, characterized in that:

a first receiving module (500), configured to receive a message sent by the core network;

a first parsing module (510), configured to parse the message received by the first receiving module (500), to obtain an indication of the subscription information of the mobile terminal carried in the message;

a first computing module (520), configured to sign a contract according to the first parsing module (510) Information indicating that the mobile terminal's information for cell reselection is obtained;

The first sending module (530) is configured to send, to the mobile terminal, information calculated by the first calculating module (520) for cell reselection.

A core network device, where the core network device includes:

The determining module (800) is configured to: when the service-based switching information and the subscription information indication coexist, decide to deliver the service-based switching information or the subscription information indication according to at least one of the access network version information, the network situation, and the user situation. ;

The third sending module (810) is configured to send, to the access network, the service-based switching information or the subscription information indication determined by the determining module (800).

An access network device, where the access network device includes:

An obtaining module (1100), configured to obtain service-based switching information and a subscription information indication from a message sent by the core network;

The first switching module (1110) is configured to perform switching control according to the service-based switching information when the indication of the subscription information cannot be identified or when the indication that the service-based handover information and the subscription information indication are inconsistent; or

The handover control is performed according to the latest received service-based handover information or subscription information indication.