WO2007124685A1

WO2007124685A1 - Paging medthod and apparatus in communication network

Info

Publication number: WO2007124685A1
Application number: PCT/CN2007/001364
Authority: WO
Inventors: Qingyu Li; Chunxia Zhi; Xiaolong Guo; Yungui Wang; Sihong Zhou; Lan Liu
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-04-24
Filing date: 2007-04-24
Publication date: 2007-11-08

Abstract

A paging method and apparatus in communication network, the paging method includes following steps: core network sends a paging request message to access network, which takes the information for indicating next actions for user terminal; based on the said paging request message that received, said access network sends the paging message to terminal of target user, which takes said information for indicating next actions; after receiving the said paging message, said user terminal initiates relevant process based on said information for indicating next actions. In another paging method in communication network, paging request message that core network sends to access network, takes user list to achieve paging several users once. Introducing the present invention can achieve the economization of message spending, the predigestion of flows, and reducing the network delay.

Description

Paging method and device in communication network

The present invention relates to the field of wireless communications, and in particular, to a paging method and apparatus in a communication network. Background technique

The Universal Mobile Telecommunications System (UMTS) is a third-generation mobile communication system using Wideband Code Division Multiple Access (WCDMA) air interface technology. It is also commonly referred to as UMTS system as WCDMA communication. system. The UMTS system uses a similar structure to the second generation mobile communication system, including the Radio Access Network (RA) and the Core Network (CN). The wireless access network is used to handle all wireless related functions, and the CN handles all voice calls and data connections in the UMTS system and implements switching and routing functions with the external network. The CN is logically divided into a Circuit Switched Domain (CS) and a Packet Switched Domain (PS).

See Figure 1 for a schematic diagram of the structure of a prior art UMTS system. The UMTS system includes a UMTS Territorial Radio Access Network (UTRAN), a core network CN, and a User Equipment (UE).

Referring to FIG. 2, it is a schematic structural diagram of a UTRAN in the prior art. The UTRAN contains one or several Radio Network Subsystems (RNS). An RNS consists of a Radio Network Controller (RNC) and one or more base stations (NodeBs). The interface between the RNC and the CN is the Ιμ interface, and the NodeB and RNC are connected through the Iub interface. Within the UTRAN, the RNCs are interconnected by Iur, and the Iur can be connected through a direct physical connection between the RNCs or through a transport network.

The above network architecture is based on the architecture of the previous version of 3GPP Rel6. Considering the competitiveness of the future network, 3GPP is studying a new evolution network architecture to meet the application requirements of mobile networks, including System Architecture Evolution. SAE) and access network Long Term Evolution (LTE), where the evolved access network is called E-UTRAN. The goal of network evolution is to provide a low latency, high data rate, high system capacity and coverage, low cost, fully IP based network.

Referring to FIG. 3, it is a schematic diagram of main components of an evolved network in the prior art. The evolved network consists of three parts: Evolved Radio Access Network (ERAN), Evolved Packet Core (EPC), and User Equipment (UE). There are three logical functional entities in the evolved packet core network: Mobility Management Entity (MME), User Plane Entity (UPE), and Inter AS Anchor (IAA). Logical functional entities MME and UPE can be deployed on one physical device.

MME is used to implement mobility management, UPE is used to implement packet session management and user plane packet data processing, IASA is used to implement access to evolved network and external packet data network (PDN), and evolved network and other Handover and roaming between non-3GPP networks such as wireless LAN WLANs. The evolved radio access network primarily provides wireless air interfaces (e.g., wireless channels), as well as radio resource related functions (e.g., power control, radio resource management). The S1 interface is between the evolved radio access network and the evolved packet core network, and the interface between the evolved packet core network and the external packet data network is a Gi interface.

In order to use various services and services provided by the network, the user terminal first needs to register with the network. This process is called network attachment, that is: Attachment has attached the MME/UPE of the user terminal for various reasons (eg: overloaded The operation and maintenance of the 0&M request or topology has better MME/UPE, etc., and the network initiates the process of requiring the user terminal to reattach to other MME/UPEs, namely: Re-Attachment, re-attachment process reused Process.

Referring to FIG. 4, a schematic diagram of a network re-attachment process initiated by a core network in an evolved network in the prior art includes the following steps:

1. The source service MME/UPE sends a Re-Attachment Request message to the user terminal, requesting the user terminal to re-execute the network attachment;

2. In the case of network sharing, the user terminal discovers an optional relationship through interaction with the eRAN. SAE/LTE access system, and select the access system and network;

3. The user terminal sends an attach request (Attach Request) message to the target service MME/UPE, and includes the original registration information of the user terminal in the message, for example, P-TMSI (Packet - Temporary Mobile Subscriber Identify) Number); if there is no original registration information in the user terminal, the message contains a permanent user identifier;

In the case of network sharing, the Attach Request message will contain information for selecting the network or target service MME/UPE, and the eRAN selects the target service MME/UPE. The Attach Request message may contain information about the default IP access bearer, such as: the user's preferred IP address and Access Point Name (APN).

4. If the old P-TMSI is included in the Attach Request message, the target service MME/UPE sends a message requesting the original registration information of the user to the source service MME/UPE to obtain the user information.

5. The source service MME/UPE sends user information (such as permanent user identity) to the target service MME/UPE;

6. Target service MME/UPE authenticates the user;

7. Target service The MME/UPE registers with the HSS (Home Subscriber Server) to indicate that it is currently serving the user terminal;

8. The user information in the source service MME UPE is deleted, or the user is identified as non-existent in the source service MME/UPE.

9. The HSS confirms that the target service MME/UPE is successfully registered, and the user subscription data used to authorize the default IP access bearer is simultaneously sent, and the policy and charging control information of the default IP access bearer are also sent to the same time. Target service MME/UPE;

10. Target service MME/UPE chooses to access the inter-system anchor point IASA;

11. The IASA configures the IP layer using the determined user IP address, the user plane is established, and the default policy and charging rules are applied;

12. The target service MME/UPE provides the QoS (Quality of Service) configuration of the default IP access bearer to the eRAN, such as the upper limit of the data transmission rate;

13. The target service MME/UPE sends an Attach Accept message to the user terminal. Accepting the network attachment of the user terminal, and assigning a temporary identifier to the user terminal, and the determined user IP address will also be transmitted;

14. The user terminal sends an Attach Confirm message to the target service MME UPE to confirm that the network attachment is successful.

The network fading process triggered by the network in the existing network is specified in TS23.060. There are two cases, one is triggered by the SGSN (Serving GPRS Support Node) and the other is by the HLR (Home). Location Register, Home Location Register) Trigger.

Referring to FIG. 5, a schematic diagram of a GPRS (General Packet Radio Service) detachment process triggered by an SGSN in an existing network in the prior art includes the following steps:

1. The SGSN sends a Detach Request message to the user terminal.

2. The SGSN sends a Delete PDP Context Request message to the GGSN (Gateway GPRS Support Node) to deactivate the active PDP context associated with the user terminal in the GGSN.

3. GGS returns the PDP context response message to confirm;

4. If the user terminal has both IMSI (International Mobile Subscriber Identity) attached to the network and GPRS attached to the network, the SGSN sends a GPRS Detach Indication message to the VLR (Visitor). Location Register, Access Location Register) or Mobile Service Switch Center (MSC), the VLR or MSC will remove the association with the SGSN and process the paging and location updates separately without passing through the SGSN;

5. The user terminal sends a Detach Accept message to the SGSN at any time after step 1.

After the SGSN receives the Detach Accept message, if the user terminal does not need to initiate a new attach procedure, the SGSN releases the packet-switched PS signaling connection.

The GPRS detachment procedure initiated by the HLR is generally used by the operator to delete a user's Mobility Management (MM) and PDP context. This process is similar to the GPRS detachment process initiated by the SGSN shown in FIG. 5, and is added to the process shown in FIG. Two steps: Add a step before step 1. The HLR sends a Cancel Location message to the SGSN and specifies a specific user who needs to delete the MM and PDP context. After step 5, a step is added, and SGS sends Cancel to the HLR. The Location Ack acknowledge message indicates that the MM and PDP context of the specified user has been successfully deleted.

In the above-mentioned network-initiated re-attachment process in the evolved network, or in the network-initiated detachment process in the existing network, the user in the idle state must first be paged.

Referring to FIG. 6, a schematic diagram of a paging process initiated by a core network in the prior art includes the following steps: 1. A core network sends a paging request message to an access network;

2. The access network sends a Paging message to page the specified user terminal;

3. The user terminal that is paged sends a Paging Response message to the core network through the access network;

4. Other signaling interaction processes between the user terminal and the core network, such as a network reattachment process or a network detachment process.

The format of the paging request message in the prior art is as shown in Table 1:

It can be seen that on the Iu interface or the S1 interface, the prior art is paging for a single user. In the process of implementing the present invention, the inventors have found that at least the following problems exist in the prior art: the re-attachment process and the detach process initiated by the network side to the user terminal in the LTE-Idle state Among them, there are more signaling, more complicated processes, and larger delays. In addition, in the paging process of the prior art, the paging request message sent from the core network to the access network is directed to a single user, and the prior art does not specify a procedure for paging multiple users on the Iu interface or the SI interface. When multiple users need to be paged at the same time, each user can only be paged separately, resulting in a large signaling load. Summary of the invention

An embodiment of the present invention provides a paging method in a communication network to reduce signaling interaction and reduce delay in a paging user process, and the method includes the following steps:

The core network sends a paging request message to the access network, and carries the indication information indicating that the user terminal performs the subsequent action; the access network sends the paging message to the terminal where the target user is located according to the received paging request message. And carrying the subsequent action indication information; after receiving the paging message, the user terminal initiates a corresponding process according to the subsequent action indication information.

Another embodiment of the present invention provides a paging apparatus, where the paging apparatus includes: a subsequent operation indication information generating unit and a paging request message generating unit;

The subsequent action indication information generating unit is configured to generate indication information indicating that the user terminal performs a subsequent action, and send the generated indication information to the paging request message generating unit; the paging request message generating unit, And configured to generate a paging request message, and carry the subsequent action indication information to the paging request message.

The foregoing embodiment of the present invention carries the indication information indicating that the user performs the subsequent action in the paging request message sent by the core network, so that the user is instructed to perform subsequent actions in the process of paging the user, thereby saving signaling overhead, The process is streamed, and P is competing for network latency.

Another embodiment of the present invention further provides a paging method in a communication network to reduce signaling interaction and reduce delay in a paging process, and the method includes the following steps:

The core network sends a paging request message to the access network, and carries a user list, where the user list includes a user identifier; the access network pages the user in the user list according to the received paging request message. Identify the user corresponding to it.

Another embodiment of the present invention provides a paging apparatus, the paging apparatus comprising: a user column a table generating unit and a paging request message generating unit;

The user list generating unit is configured to generate a user list and send the user list to the paging request message generating unit, where the user list includes a user identifier;

The paging request message generating unit is configured to generate a paging request message, and carry the user list in the paging request message.

In the foregoing embodiment of the present invention, the core network carries the user list in the paging request message sent by the core network, so that multiple users can be paged at a time, thereby saving signaling overhead, simplifying the process, and reducing the network delay. DRAWINGS

1 is a schematic structural diagram of a prior art UMTS system;

2 is a schematic structural diagram of a prior art UTRAN;

3 is a schematic diagram of main components of an evolved network of the prior art;

4 is a network re-attachment process initiated by a core network in an evolved network of the prior art; FIG. 5 is a schematic diagram of a GPRS de-attachment process triggered by an SGSN in the prior art;

6 is a schematic diagram of a paging process initiated by a core network in the prior art;

7 is a schematic flowchart of Embodiment 1 of the present invention;

8 is a schematic flowchart of Embodiment 2 of the present invention;

9 is a schematic flowchart of Embodiment 3 of the present invention;

10 is a second schematic flowchart of Embodiment 3 of the present invention;

11 is a schematic flowchart of Embodiment 4 of the present invention;

12 is a schematic flowchart of Embodiment 5 of the present invention;

13 is a schematic flowchart of Embodiment 6 of the present invention;

14 is a second schematic flowchart of Embodiment 6 of the present invention;

15 is a flowchart of simultaneously paging a plurality of users initiated by a core network according to Embodiment 7 of the present invention; FIG. 16 is a schematic flowchart of implementing simultaneous detachment of multiple user terminals according to Embodiment 8 of the present invention; A schematic diagram of a process for implementing simultaneous detachment of multiple user terminals according to Embodiment 9; FIG. 18 is a schematic flowchart of implementing simultaneous de-attachment of multiple user terminals according to Embodiment 10 of the present invention. detailed description

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Embodiment 1

This embodiment describes a process of carrying a re-attachment indication message in a paging request message initiated by a core network to implement a paging of a user terminal in an LTE-Idle state and instructing it to reattach the network.

FIG. 7 is a schematic flowchart of Embodiment 1 of the present invention, where specific steps include:

1. Source service The MME/UPE sends a paging request message to the eRAN, carrying the Re-Attach indication information. Re-Attach indicates an indication bit that needs to be added in the Paging message to indicate that the action that the user terminal needs to perform subsequently is to reattach;

2. The eRAN pages the designated user terminal by using the Paging message, and carries the Re-Attach indication information;

3. The user terminal that is paged sends a Paging Response message to the source service MME UPE;

4. The user terminal sends an Attach Request message to the target service MME/UPE according to the Re-Attach indication information.

5. The remaining steps of the reattachment process are shown in Figure 4.

In the first embodiment, the paging request message and the Re-Attachment Request message are combined by carrying the Re-Attach indication in the request message initiated by the core network, thereby saving signaling overhead and reducing network delay.

Embodiment 2

The second embodiment carries the paging response indication information in the attach request message sent by the user terminal to implement the process of paging the user terminal in the LTE_Idle state and instructing it to reattach the network.

FIG. 8 is a schematic flowchart of Embodiment 2 of the present invention, where specific steps include:

1. The source service MME/UPE sends a paging request message to the eRAN, and carries the Re-Attach indication information; 2. The eRA advertises the specified user terminal by using the Paging message, and carries the Re-Attach indication information.

3. The user terminal that is paged sends an Attach Request message to the target service MME/UPE according to the Re-Attach indication information, and carries the Paging Response indication information;

The Paging Response indicates an indication bit that needs to be added to the Attach Request message as a response to the Paging message and forwarded by the target service MME/UPE to the source service MME/UPE.

4. The target service MME/UPE sends a Paging Response message to the source service MME/UPE;

5. The remaining steps of the reattachment process are shown in Figure 4.

The Paging Response message in step 4 may be sent as a single message, or may be combined and sent to other messages sent by the source service MME/UPE to the target service MME/UPE in the subsequent re-attachment process. For example, in the message that the source service MME/UPE sends the original registration information of the user to the target service MME/UPE, the Paging Response indication information is carried, so that the source service MME/UPE obtains the paging response of the user terminal.

The second embodiment, based on the first embodiment, carries the Paging Response indication in the Attach Request message sent by the user terminal, and combines the Attach Request message and the Paging Response message, thereby further saving signaling overhead and reducing network time. Delay.

Embodiment 3

Embodiment 3, on the basis of the first embodiment or the second embodiment, the source service MME/UPE sends the identifier of the obtained target service MME/UPE to the user terminal, so as to implement the paging of the LTE-Idle state user terminal, and Indicates the process of reattaching it to the network.

FIG. 9 is a schematic flowchart of a third embodiment of the present invention. The process is based on the second embodiment. The specific steps include:

1. The source service MME UPE obtains the identifier of a target service MME/UPE;

The identifier may be any identifier that uniquely indicates the MME/UPE, such as: Network Resource Identifier (NRI), MME/UPE number, and the like. The mechanism for obtaining the target service MME/UPE identifier is not limited, for example: The load can be selected according to the load situation.

2. The source service MME/UPE of the user terminal sends a paging request message to the eRAN, carrying Re-Attach indication information, and carries the identifier of the target service MME/UPE;

3. The eRAN pages the specified user terminal through the Paging message, and carries the Re-Attach indication information and the target service MMU/UPE identifier;

An information element is added to the paging request message and the Paging message, that is, the MME UPE identifier is used to carry the identifier of the target service MME/UPE.

4. The user terminal that is paged sends an Attach Request message to the MME UPE corresponding to the target service MMU/UPE identifier according to the Re-Attach indication, and carries the Paging Response indication information;

5. The target service MME/UPE sends a Paging Response message to the source service MME/UPE, and sends the response information of the user terminal to the Paging message to the source service MME/UPE of the user terminal;

6. The remaining steps for reattaching are shown in Figure 4.

The Paging Response message in step 5 can be sent as a single message, or the Paging Response message can be combined with other messages sent by the source service MME/UPE to the target service MME/UPE in the subsequent re-attachment process.

FIG. 10 is a second schematic flowchart of Embodiment 3 of the present invention, where the process is based on Embodiment 1. On the basis of the first embodiment, the Paging message sent by the core network to the access network and the Paging message sent by the access network carry the target service MME/UPE identifier, so that the user terminal can be based on the MMU/UPE. The identifier sends an Attach Request message to the corresponding target serving MME/UPE.

The foregoing embodiments 1 to 3 are all directed to a single user terminal. If a user terminal having multiple LTE-Idle states needs to be reattached, an additional information unit may be added to the paging request message sent by the core network, that is, the user list. Used to indicate all users who need to be paged and reattached at the same time, so that paging multiple users at a time and reattaching.

The user list is a new information unit to be added in the protocol, and the elements are related identifiers of the user, such as: IMSI, TMSI (Temporary Mobile Station Identity), P-TMSI, and the like. Table 2 shows the format of a possible user list:

Table II Information unit type

Number of users

User 1 identification

User 2 ID User N ID In Table 2, the information unit type is the code of the user list information unit. The number of users is the number of users included in the user list information unit, followed by the identifiers of these users.

Table 3 shows the format of a possible paging request message:

Table 3

Information unit/group name, necessity, value range

Message type Required

Core Domain ID Required

Paging User List Required

>User terminal information unit From 1 to the maximum number of users

»Permanent User ID Required

»Temporary User Identification Optional

Paging area identification Optional

Reason for paging Optional

Non-search indication optional

Discontinuous reception period coefficient

Global core network ID Optional

Table 4 shows the format of another possible paging request message:

Table 4

Information unit/group name, necessity, value range

Message type Required

Core Domain ID Required

Paging User List Required

> User terminal information unit from 1 to the maximum number of users »Yongyong User ID Required

:»Temporary User ID Optional

»Paging area identification Optional

»Paging reasons Optional

>>Non-search indication Optional

>>Discontinuous reception period coefficient Optional

»Global core network identifier Optional The paging request message shown in Table 3 applies to the same situation in the paging area identifier and paging cause. Table 4 applies to different situations such as paging area identification and paging cause. Table 3 and Table 4 show only two possible paging request message formats. The format of the paging request message is not limited to the above two forms.

Embodiment 4

On the basis of the first embodiment, the source service MME/UPE obtains the identifier of the user in an idle state and needs to be reattached, and generates a user list to implement paging of multiple LTE-Idle state user terminals, and instructs them to reattach. The process of the network.

FIG. 11 is a schematic flowchart of Embodiment 4 of the present invention, where specific steps include:

1. The source service MME/UPE sends a paging request message to the eRAN, carries the Re-Attach indication information, and carries the user list at the same time;

2. The eRAN advertises all user terminals specified by the user list through the Paging message, and carries the Re-Attach indication information;

3. The user terminal that is paged separately sends a Paging Response message to the source service MME/UPE;

4. The user terminal that is paged sends an Attach Request message to the target service MME/UPE according to the Re-Attach indication information.

5. The remaining steps of the reattachment process are shown in Figure 4.

In the above process, each user terminal that is paged must perform a network reattachment process, and only one user terminal reattachment process is drawn. Embodiment 5

On the basis of the second embodiment, the source service MME/UPE obtains the identifier of the user in an idle state and needs to be reattached, and generates a user list to implement paging of multiple LTE-Idle state user terminals, and instructs them to reattach. The process of the network.

Referring to FIG. 12, it is a schematic flowchart of Embodiment 5 of the present invention, and specific steps include:

1. The source service MME/UPE initiates a paging request to the eRAN, carries the Re-Attach indication information, and carries the user list at the same time;

2. The eRAN advertises all user terminals specified by the user list through the Paging message, and carries the Re-Attachment information at the same time;

3. The user terminal that is paged sends an Attach Request message to the target serving MME UPE according to the Re-Attach indication information, and carries the Paging Response indication information;

4. The target service MME UPE sends a Paging Response message to the source service MME/UPE, and sends the response information of the user terminal to the Paging message to the source service MME/UPE of the user terminal;

5. The remaining steps of the reattachment process are shown in Figure 4.

The Paging Response message in step 4 may be sent as a single message, or may be combined and sent to other messages sent by the source service MME UPE to the target service MME/UPE in the subsequent re-attachment process.

In the above process, each user terminal that is paged must perform a network reattachment process, and only one user terminal reattachment process is drawn.

Embodiment 6

On the basis of the third embodiment, the source service MME/UPE obtains the identifier of the user in an idle state and needs to be reattached, and generates a user list to implement paging of multiple LTE_Idle state user terminals, and instructs them to reattach the network. process.

Referring to FIG. 13, which is a schematic flowchart of Embodiment 6 of the present invention, the process is based on FIG. 9, and the specific steps include:

1. The source service MME/UPE obtains the identifier of a target service MME/UPE;

2. The source service MME/UPE sends a paging request message to the eRAN, carrying the Re-Attach indication. Information, user list and identity of the target service MME/UPE;

3. The eRAN advertises the user terminal specified by the user list through the Paging message, and carries the Re-Attach indication information and the target service MMU/UPE identifier;

4. The user terminal that is paged sends an Attach Request message to the MMU/UPE corresponding to the target service MME/UPE identifier according to the Re-Attach indication information, and carries the Paging Response indication information and the target service MME/UPE identifier;

5. The target service MME/UPE sends a Paging Response message to the source service MME/UPE, and sends the response information of the user terminal to the Paging message to the source service MME UPE of the user terminal;

6. The remaining steps of the reattachment process are shown in Figure 4.

The Paging Response message in step 5 can be sent as a single message, or the Paging Response message can be combined with other messages sent by the source service MME/UPE to the new service MME/UPE in the subsequent re-attachment process.

Referring to FIG. 14, which is a second schematic flowchart of Embodiment 6 of the present invention, the process is based on FIG. On the basis of the flow of FIG. 10, a paging request message sent by the core network to the access network carries a user list, thereby achieving the purpose of paging multiple user terminals at a time. Each paged user terminal sends a Paging Response message to the source service MME/UPE, and sends an Attach Request message to the target service MME/UPE to reattach.

The switching of user terminals in the delay-sensitive service in the active state is described in TR23.882V1.0.0. When the user terminal moves from the service area 1 to the service area 2 in the active state, since the user terminal is performing delay-sensitive services, the MME/UPE cannot be switched immediately, otherwise the ongoing service will be affected. The method that can be adopted is: after the user terminal is switched to the LTE-Idle state, the user terminal is advertised by the MME/UPE in the service area 1, and the Re-Attach indication information and the MME/UPE identifier in the service area 2 are carried, and the trigger is triggered. The user terminal reattaches to the MME/UPE under service area 2. At this time, the process of reattaching to the network may adopt the process of Embodiment 3 above.

Example 7 The seventh embodiment describes a process of paging a plurality of users at a time by carrying a user list in a paging request message sent by the core network.

Referring to FIG. 15, which is a flowchart of simultaneously paging multiple users initiated by a core network according to an embodiment of the present invention, the specific steps include:

1. The core network sends a paging request message to the access network, and carries a user list. The user list can be as shown in Table 2 above, and the format of the paging request message added to the user list can be as shown in Table 3 or Table 4 above.

2. The access network, according to the user list, paging all user terminals specified by the user list by sending a Paging message;

4. After the paging is completed, other signaling interactions are performed between the user terminal and the core network.

The paging mode of the paging of multiple users by carrying the user list in the paging request message sent by the core network can be applied to the re-attachment process in the evolved network, and can also be applied to the detach process in the existing network.

Example eight

The eighth embodiment describes a process of performing detachment by performing paging on a plurality of users in the detachment process by carrying a user list in a paging request message sent by the core network.

Referring to FIG. 16, a flowchart for implementing simultaneous attachment of multiple user terminals in an existing network according to Embodiment 8 of the present invention includes the following steps:

1. If the network detachment process is initiated by the HLR, the HLR sends a Cancel Location message to the SGSN to carry the user list; if it is initiated by the SGSN, step 2 is directly performed;

2. The SGSN sends a paging request message to the RAN, carrying the user list;

3. The RAN pages all user terminals specified by the user list by using a Paging message;

4. The user terminal that is paged sends a Paging Response message to the SGSN via the RAN;

5. The SGSN sends a Detach Request message to the user terminal.

6. The user terminal sends a Detach Accept message to the SGSN. 7. If the Detach process is initiated by the HLR, the J SGSN sends a Cancel Location Ack acknowledgment message to the HLR; if the network detach procedure is initiated by the SGSN, then there is no such step.

The steps of deleting the PDP context, sending the GPRS Detach Indication message to the VLR, and releasing the PS signaling connection are omitted in the above process.

In the above process, each user terminal that is paged must perform a network detachment process separately, and only one detachment process of the user terminal is shown in the figure.

In order to further save the signaling overhead, the paging request message sent by the core network to the access network may also carry indication information indicating a subsequent action that the user terminal needs to perform.

For example, in the re-attachment process in the evolved network, the indication information of the subsequent action carried by the core network in the sent paging request message is a Re-Attach indication, and the re-attachment process at this time may be as described in the foregoing first embodiment. This saves the process of sending a Re-Attachment Request message from the core network to the user terminal. Further, the Paging Response indication may be carried in the attach request message sent by the user terminal, and the re-attach procedure may be as described in the foregoing Embodiment 2, which may save the process of sending the Paging Response message by the user terminal. . The core network may also carry the obtained target core network identifier in the paging request message and send it to the user terminal. The re-attachment process may be as described in the foregoing third embodiment, so that the user terminal can initiate a re-initiation to the core network. Attached.

In the detachment process in the existing network, the paging request message sent by the core network may also include indication information indicating that the user terminal performs subsequent actions, where the indication information is a detachment indication, to indicate the user that is paged. The terminal performs a detach process, and the process can be as described in Embodiments 9 and 10.

The user terminal that implements multiple idle states in the existing network simultaneously performs network detachment. First, the SGSN or HLR obtains the identity of the user who is in an idle state and needs to be detached, and generates a user list.

Example nine

Embodiment 9 describes, on the basis of Embodiment 8, carrying the detachment indication information in the paging request message sent by the core network, to implement paging of multiple LTE-Idle state user terminals, and instructing them to attach to the network. process. Referring to FIG. 17, a flowchart of implementing simultaneous detachment of multiple user terminals in an existing network according to Embodiment 9 of the present invention includes the following steps:

2. The SGSN sends a paging request message to the RAN, carrying a user list and Detach indication information;

3. The RAN pages all the user terminals specified by the user list through the Paging message, and carries the Detach indication information;

Detach indicates an indication bit that needs to be newly added in the paging request message and the Paging message to indicate that the specified user terminal is detached.

4. The user terminal that is paged sends a Paging Response message to the SGSN via the RAN; 5. The user terminal sends a Detach Accept message to the SGSN.

6. If the network detach procedure is initiated by the HLR, the SGSN sends a Cancel Location Ack acknowledgment message to the HLR; if the detach procedure is initiated by the SGSN, then there is no such step.

Example ten

The tenth embodiment describes, on the basis of the ninth embodiment, carrying the paging response indication information in the detachment accept message sent by the user terminal to the core network, so as to implement the paging of the multiple LTE-Idle state user terminals, and instructing The process of attaching to the network.

Referring to FIG. 18, a flowchart for implementing simultaneous attachment of multiple user terminals in an existing network according to Embodiment 10 of the present invention includes the following steps:

2. The SGSN sends a paging request message to the RAN, carrying the user list and Detach indication information; 3. The RAN advertises all user terminals specified by the user list through the paging message, and carries Detach indication information;

4. The user terminal that is paged sends a Detach Accept message to the SGSN via the RAN, and carries the Paging Response indication information;

Paging the Response is indicated as a bit for an indication in the Detach Accept message, the new opening force for Paging Response message ₀

5. If the network detach procedure is initiated by the HLR, the B' SGSN sends a Cancel LocationAck acknowledgment message to the HLR; if the network detach procedure is initiated by the SGSN, then there is no such step.

It is worth mentioning that if the number of users in the user list is 1, the existing technology can also be used for paging, that is, the user ID is directly paged in the paging message without using the user list cell. In this case, the ninth and the second embodiments are similar to the first and second embodiments, that is, the information of the subsequent action indication is carried in the paging request message sent by the user in the single idle state, and the difference from the first embodiment and the second embodiment is that The subsequent action indication information carried here is the detachment indication information.

In summary, the embodiment of the present invention carries the indication information indicating that the user terminal performs subsequent actions in the paging request message sent by the core network, and indicates that the user terminal subsequently initiates the corresponding process; or, the core network sends the corresponding information. The paging request message carries the user list, and can page multiple users at a time, thereby saving signaling overhead, streamlining the process, and reducing the delay in the re-attachment process in the evolved network. In addition, the method for carrying multiple users by paging the user list in the paging request message is applied to the detachment process in the existing network, which can also save signaling overhead and simplify the process. , to reduce the purpose of delay.

Claims

Rights request

A paging method in a communication network, comprising the steps of:

The core network sends a paging request message to the access network, and carries indication information indicating that the user terminal performs subsequent actions;

The access network sends a paging message to the terminal where the target user is located according to the received paging request message, and carries the subsequent action indication information;

After receiving the paging message, the user terminal initiates a corresponding process according to the subsequent action indication information.

2. The method according to claim 1, wherein before the sending, by the core network, the paging request message, the method further includes the steps of: generating a user list; the user list includes being in an idle state and performing the subsequent a user identifier of a subsequent action indicated by the action indication information;

The core network carries the user list in the paging request message and sends the information to the access network. After receiving the paging request message, the access network pages the user identifier in the user list. Corresponding user.

The method according to claim 1 or 2, wherein the subsequent action indication information is re-attachment indication information or detachment indication information.

The method according to claim 3, wherein, when the subsequent action indication information is re-attachment indication information, the user terminal sends a network attachment request to the target core network after receiving the paging message. a message carrying the paging response indication information of the user terminal;

After receiving the network attach request message, the target core network of the user terminal, in the paging response indication information, sends a paging response message to the source core network of the user terminal;

Or the target core network of the user terminal carries the paging response indication information in a message sent to the source core network of the user terminal in the process of performing re-attachment of the user terminal.

The method of claim 4, wherein before the sending, by the core network, the paging request message, the method further includes: acquiring a target core network identifier of the user terminal;

The source core network of the user terminal carries the acquired target core network identifier in the homing The call request message is sent to the access network; the access network carries the target core network identifier in the paging message and sends the message to the user terminal; after receiving the paging message, the user terminal The core network corresponding to the core network identifier sends a network attach request message.

The method according to claim 3, wherein, when the subsequent action indication information is re-attachment indication information, before the core network sends the paging request message, the method further includes the steps of: acquiring the user terminal Target core network identifier;

The source core network of the user terminal carries the obtained target core network identifier in the paging request message and sends the identifier to the access network; the access network carries the target core network identifier in the paging message. The user terminal sends the network attachment request message to the core network corresponding to the core network identifier after receiving the paging message.

The method according to claim 3, wherein, when the subsequent action indication information is detachment indication information, the user terminal sends a detach accept message to the core network after receiving the paging message. And carrying the paging response indication information of the user terminal.

A paging method in a communication network, comprising: the following steps: the core network sends a paging request message to the access network, carrying a user list, where the user list includes a user identifier;

The access network pages the user corresponding to the user identifier in the user list according to the received paging request message.

The method according to claim 8, wherein the paging response message sent by the core network further carries indication information indicating that the user terminal performs a subsequent action.

The method according to claim 9, wherein the subsequent action indication information is re-attachment indication information, and the user identifier in the user list is an identifier of a user who is in an idle state and needs to be re-attached to the network;

The access network carries the re-attachment indication information in the paging message and sends the message to the user terminal; after receiving the paging message, the user terminal sends the re-attachment indication information to the target core according to the The network sends a network attach request message to perform a network attach procedure.

The method according to claim 10, wherein the core network sends the paging Before the request message, the method further includes: obtaining a target core network identifier of the user terminal; the source core network of the user terminal carries the obtained target core network identifier in the paging request message, and sends the access The access network carries the target core network identifier in a paging message and sends the message to the user terminal. After receiving the paging message, the user terminal identifies the core corresponding to the target core network. The network sends a network attach request message.

The method according to claim 10 or 11, wherein the user terminal carries the paging response indication information of the user terminal in the network attachment request message sent by the user terminal;

After receiving the network attach request message, the target core network of the user terminal sends a paging response message to the source core network of the user terminal according to the paging response indication information;

Or, after receiving the network attach request message, the target core network of the user terminal carries the homing in a message sent to the source core network of the user terminal in the process of re-attaching the user terminal. Call response indication information.

The method according to claim 9, wherein the subsequent action indication information is detachment indication information, and the user identifier in the user list is an identifier of a user who is in an idle state and needs to detach the network;

The access network carries the detachment indication information in the paging message and sends the message to the user terminal. After receiving the paging message, the user terminal sends the indication information to the detachment indication information. The core network sends a detach accept message to perform a detach process.

14. The method according to claim 13, wherein the user list is generated by the core network; or generated by a home location register and sent to the core network.

The method according to claim 14, wherein the home location register carries the user list in a message for sending a delete location to the core network.

The method according to claim 13, wherein the user terminal carries the paging response indication information of the user terminal in the sent detachment accept message.

A paging apparatus, comprising: a subsequent action indication information generating unit and a paging request message generating unit;

The subsequent action indication information generating unit is configured to generate a message indicating that the user terminal performs a subsequent action The indication information, and the generated indication information is sent to the paging request message generating unit; the paging request message generating unit is configured to generate a paging request message, and carry the subsequent action indication information on The paging request message.

The paging device according to claim 17, further comprising:

a user list generating unit, configured to generate a user list and send the user list to the paging request message generating unit; the user list includes an idle state and needs to execute a subsequent step generated by the subsequent action indication information generating unit a user identifier of a subsequent action indicated by the action indication information;

The paging request message generating unit carries the user list to the paging request message.

The paging apparatus according to claim 17 or 18, further comprising: a target core network identifier obtaining unit, configured to: when the indication information generated by the subsequent action indication information generating unit is reattachment indication information Obtaining a target core network identifier of the user terminal, and sending the obtained target core network identifier to the paging request message generating unit;

The paging request message generating unit carries the target core network identifier to the paging request message.

A paging apparatus, comprising: a user list generating unit and a paging request message generating unit;

The paging device of claim 20, further comprising:

a subsequent action indication information generating unit, configured to generate indication information indicating that the user terminal performs a subsequent action, and send the generated indication information to the paging request message generating unit;

The paging request message generating unit carries the subsequent action indication information to the paging request message.

The paging device according to claim 20 or 21, further comprising: And a target core network identifier obtaining unit, configured to: when the indication information generated by the subsequent action indication information generating unit is the re-attachment indication information, obtain the target core network identifier of the user terminal, and send the obtained target core network identifier to the a paging request message generating unit;