WO2016082222A1

WO2016082222A1 - Sgw, mme, and paging method and system

Info

Publication number: WO2016082222A1
Application number: PCT/CN2014/092582
Authority: WO
Inventors: 张艳平
Original assignee: 华为技术有限公司
Priority date: 2014-11-28
Filing date: 2014-11-28
Publication date: 2016-06-02
Also published as: CN105830511A; CN105830511B

Abstract

The present invention relates to the field of communications. Disclosed are an SGW, an MME, and a paging method and system, which solve the problem of failing to provide a service to other UEs caused by performance deterioration of a CPU of an MME. The specific solution is: a receiving module receives first information of a UE sent by an MME and receives downlink data of the UE sent by a PGW; and when the UE is in an idle state, a sending module sends a paging message to an eNodeB according to the first information received by the receiving module. The present invention is used in a paging process.

Description

SGW, MME, paging method and system

Technical field

The present invention relates to the field of communications, and in particular, to an SGW, an MME, a paging method, and a system.

Background technique

In the Long Term Evolution (LTE) network, the core network is mainly composed of a mobility management entity (English: Mobility Management Entity, MME) and a service gateway (English: Serving Gateway, SGW for short). The packet data network gateway (English: Packet Data Network Gateway, PGW for short) is composed of three logical functions. The MME is mainly used for mobility management of user equipment (English: User Equipment, UE for short). If the SGW receives the downlink signaling or the user plane data sent by the PGW to the UE, the SGW sends a downlink data notification message to the MME, so that the MME passes the evolved base station (English: Evolved NodeB, referred to as: The eNodeB) pages the UE.

However, with the widespread application of the intelligent terminal, the UE frequently performs data services and switches between the idle state and the connected state, and when the SGW receives the downlink signaling or data of the idle state UE transmitted by the PGW, the SGW will Sending a downlink data notification message to the MME, so that the MME can page the UE, so that the number of pagings of the MME to the single UE increases, that is, the number of paging messages of the single UE that the MME needs to process increases, and at the same time Because the number of eNodeBs connected by the MME is large, the number of UEs that are advertised by the MME is also increased. Therefore, the total number of paging messages that the MME needs to process is large, which seriously deteriorates the central processing unit of the MME. : Central Processing Unit (CPU) performance, which causes the MME to not provide services for other UEs.

Summary of the invention

The present invention provides an SGW, an MME, a paging method, and a system, which solves the problem that the CPU performance of the MME cannot be serviced by other UEs.

In order to achieve the above object, the present invention adopts the following technical solutions:

A first aspect of the present invention provides a serving gateway S GW, including: a receiving module and a sending module;

The receiving module is configured to receive first information of the user equipment UE that is sent by the mobility management entity MME, and receive downlink data of the UE that is sent by the packet data network gateway (PGW);

The sending module is configured to send a paging message to the evolved base station eNodeB according to the first information received by the receiving module when the UE is in an idle state.

With reference to the first aspect of the present invention, in a first possible implementation, the downlink data is downlink signaling or downlink user plane data; and the SGW further includes: a processing module;

The processing module is configured to determine, before the sending module sends a paging message to the evolved base station eNodeB according to the first information, that an attribute of the downlink data received by the receiving module meets a predetermined condition.

With reference to the first possible implementation manner of the first aspect of the present invention, in a second possible implementation manner, when the downlink data is the downlink signaling, the attribute of the downlink data meets a predetermined condition, including the following: The ARP value of the default bearer associated with the downlink signaling is less than a preset threshold, and the ARP value of the default bearer associated with the downlink signaling is less than a preset threshold; or

When the downlink data is the downlink user plane data, the attribute of the downlink data that meets the predetermined condition includes: the ARP value of the bearer to which the downlink user plane data belongs is less than a preset threshold; or

When the downlink data is the downlink user plane data, the attribute of the downlink data satisfies the predetermined condition that the service type indication or the differential service code point DSCP included in the downlink user plane data matches the pre-configured policy.

With reference to any one of the first aspect of the present invention to the second possible implementation of the first aspect, in a third possible implementation, the first information includes at least one of: indicating by the SGW The indication information that the UE performs paging, or the registration information of the UE.

In conjunction with the third possible implementation of the first aspect of the invention, in a fourth possibility In an implementation manner, the sending module is specifically configured to: when the first information includes the indication information indicating that the SGW is paging the UE, according to the stored international mobile subscriber identity of the UE The code IMSI generates the paging message and sends the paging message to the eNodeB.

With reference to the third possible implementation manner of the first aspect of the present invention, in a fifth possible implementation, the sending module is specifically configured to: when the first information includes registration information of the UE, according to the The registration information of the UE generates the paging message and sends the paging message to the eNodeB.

With reference to the fourth possible implementation manner to the fifth possible implementation manner of the first aspect of the present invention, in the sixth possible implementation manner, the sending module is specifically configured to apply the protocol according to the S1 The AP encapsulates the paging message, and sends the encapsulated paging message to the eNodeB in a General Packet Radio Service Tunneling Protocol user plane GTP-U data packet; or

The sending module is specifically configured to send the paging message to the eNodeB in a general packet radio service tunneling protocol control plane GTP-C message; or

The sending module is specifically configured to encapsulate the paging message according to the S1-AP, and send the encapsulated paging message to the eNodeB in a flow control transmission protocol SCTP data packet.

With reference to the first aspect of the present invention to the sixth possible implementation of the first aspect, in a seventh possible implementation, the processing module is further configured to send, by the sending module, the eNodeB to the evolved base station eNodeB After the message is called, the timer is started;

The sending module is further configured to: when the processing module determines that the bearer modification request of the UE that is sent by the MME is not received before the timer stops, resending the paging message to the eNodeB;

The processing module is further configured to restart the timer, and stop the timer after receiving the bearer modification request of the UE.

In combination with the first aspect of the present invention, the seventh possible implementation manner of the first aspect, in the eighth possible implementation, the sending module is further configured to send a paging notification message to the MME The paging notification message is used to notify the MME by The SGW pages the UE.

With reference to the third possible implementation manner of the first aspect of the present invention, in a ninth possible implementation manner, the registration information of the UE includes any one or more of the following combinations: a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, a closed subscriber group CSG identifier list of the UE, an eNodeB address where the UE last camped, and the UE last time The resident eNodeB identity, the tracking area where the UE last resided, and the cell identity of the UE that last camped.

With reference to any one of the first aspect of the present invention to the ninth possible implementation of the first aspect, in a tenth possible implementation, the processing module is further configured to: Before transmitting the paging message to the evolved base station eNodeB, the information is determined to be in an idle state according to the downlink user plane information allocated by the eNodeB to the UE.

A second aspect of the present invention provides a mobility management entity MME, including: a processing module and a sending module;

The processing module is configured to acquire first information of the user equipment UE, where the first information is used by the serving gateway SGW to page the UE;

The sending module is configured to send the first information of the UE that is obtained by the processing module to the SGW, where the first information is used by the SGW to page the UE.

With reference to the second aspect of the present invention, in a first possible implementation, the processing module is further configured to: before acquiring the first information of the UE, determine that the UE is a UE that needs the SGW paging .

With reference to the first possible implementation manner of the second aspect of the present invention, in a second possible implementation manner, the processing module is configured to determine, according to the locally configured International Mobile Subscriber Identity (IMSI) list, that the UE is in need The UE that is paged by the SGW; the IMSI list includes an IMSI of a UE that needs to be paged by the SGW.

With reference to the first possible implementation manner of the second aspect of the present invention, in a third possible implementation manner, the MME further includes: a receiving module;

The receiving module is configured to receive the priority information of the UE sent by the home network server HSS or the UE, where the processing module is specifically configured to determine, according to the priority information of the UE received by the receiving module The UE is a UE that needs to be paged by the SGW; or

The receiving module is configured to receive the paging indication information of the UE that is sent by the HSS, where the processing module is configured to determine, according to the paging indication information of the UE that is received by the receiving module, that the UE is in need The UE that is paged by the SGW; the paging indication information is used to indicate whether the UE is paging by the SGW.

With reference to any one of the second aspect to the second aspect of the present invention, in a fourth possible implementation, the first information includes at least one of: indicating by the SGW The indication information that the UE performs paging, or the registration information of the UE.

With reference to the fourth possible implementation manner of the second aspect of the present invention, in a fifth possible implementation manner, the registration information of the UE includes a combination of any one or more of the following: a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, a closed subscriber group CSG identifier list of the UE, an eNodeB address where the UE last camped, and the UE last time The identity of the resident eNodeB, the tracking area where the UE last resided, and the cell identity of the last time the UE camped.

A third aspect of the present invention provides a paging method, including:

Receiving first information of the user equipment UE sent by the mobility management entity MME;

Receiving downlink data of the UE sent by the packet data network gateway PGW;

And when the UE is in an idle state, sending a paging message to the evolved base station eNodeB according to the first information.

With reference to the third aspect of the present invention, in a first possible implementation, the downlink data is downlink signaling or downlink user plane data, and sending, by using the first information, a paging message to an evolved base station eNodeB. Previously, it also included:

Determining that the attribute of the downlink data satisfies a predetermined condition.

In conjunction with the first possible implementation of the third aspect of the invention, in the second possibility In an implementation manner, when the downlink data is the downlink signaling, the attribute of the downlink data meets a predetermined condition, where the following conditions are included: the allocation and retention priority ARP value of the bearer to which the downlink signaling belongs is less than The threshold value and the ARP value of the default bearer associated with the downlink signaling are less than a preset threshold; or

With reference to any one of the third aspect to the third aspect of the present invention, in a third possible implementation, the first information includes at least one of: indicating by the SGW The indication information that the UE performs paging, or the registration information of the UE.

With reference to the third possible implementation manner of the third aspect of the present invention, in a fourth possible implementation manner, when the first information includes the indication information indicating that the SGW is paging the UE, And sending the paging message to the evolved base station eNodeB according to the first information, including:

Generating the paging message according to the stored International Mobile Subscriber Identity (IMSI) of the UE, and transmitting the paging message to the eNodeB.

With reference to the third possible implementation manner of the third aspect of the present invention, in a fifth possible implementation manner, when the first information includes registration information of the UE, the The type base station eNodeB sends a paging message, including:

Generating the paging message according to the registration information of the UE, and sending the paging message to the eNodeB.

With reference to any one of the fourth possible implementation manner to the fifth possible implementation manner of the third aspect of the present invention, in a sixth possible implementation manner, the sending the paging message to the eNodeB, include:

Encapsulating the paging message according to the S1 application protocol S1-AP, and packaging The subsequent paging message is sent to the eNodeB in a General Packet Radio Service Tunneling Protocol user plane GTP-U data packet; or

Transmitting the paging message to the eNodeB in a General Packet Radio Service Tunneling Protocol Control Plane GTP-C message; or

The paging message is encapsulated according to the S1-AP, and the encapsulated paging message is included in the flow control transport protocol SCTP data packet and sent to the eNodeB.

With reference to the third aspect of the present invention, the sixth possible implementation manner, in the seventh possible implementation, after the paging message is sent to the evolved base station eNodeB according to the first information, Also includes:

The SGW starts a timer;

When the SGW determines that the bearer modification request of the UE sent by the MME is not received before the timer stops, resending the paging message to the eNodeB, and restarting the timer until receiving After the bearer modification request of the UE, the timer is stopped.

With reference to any one of the third to third aspects of the present invention, in a seventh possible implementation, the method further includes:

Sending a paging notification message to the MME; the paging notification message is used to notify the MME to page the UE by the SGW.

With reference to the third possible implementation manner of the third aspect of the present invention, in the ninth possible implementation manner, the registration information of the UE includes any one or more of the following combinations: a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, a closed subscriber group CSG identifier list of the UE, an eNodeB address where the UE last camped, and the UE last time The resident eNodeB identity, the tracking area where the UE last resided, and the cell identity of the UE that last camped.

With reference to any of the ninth possible implementation manners of the third to third aspects of the present invention, in the tenth possible implementation, the sending the paging to the evolved base station eNodeB according to the first information Before the news, it also includes:

Determining the UE according to downlink user plane information allocated by the eNodeB to the UE In an idle state.

According to a fourth aspect of the present invention, a paging method is provided, including:

Obtaining first information of the user equipment UE; the first information is used by the serving gateway SGW to page the UE;

Sending the first information of the UE to the SGW.

With reference to the fourth aspect of the present invention, in the first possible implementation, before the acquiring the first information of the user equipment UE, the method further includes:

Determining that the UE is a UE that requires the SGW to page.

With reference to the first possible implementation manner of the fourth aspect of the present invention, in the second possible implementation manner, the determining that the UE is a UE that needs to be the SGW paging includes:

Determining, by the locally configured International Mobile Subscriber Identity (IMSI) list, that the UE is a UE that needs the SGW paging; the IMSI list includes an IMSI of a UE that needs the SGW paging; or

Receiving the priority information of the UE sent by the home network server HSS or the UE, and determining, according to the priority information of the UE, that the UE is a UE that needs to be paged by the SGW; or

Receiving the paging indication information of the UE that is sent by the HSS, and determining, according to the paging indication information of the UE, that the UE is a UE that needs the SGW to be paged; the paging indication information is used to indicate whether the UE is Paging is performed by the SGW.

With reference to any one of the fourth aspect to the fourth aspect of the present invention, in a third possible implementation, the first information includes at least one of: indicating by the SGW The indication information that the UE performs paging; or the registration information of the UE.

With reference to the third possible implementation manner of the fourth aspect of the present invention, in a fourth possible implementation manner, the registration information of the UE includes any one or more of the following combinations: a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, a closed subscriber group CSG identifier list of the UE, an eNodeB address where the UE last camped, and the UE last time The identity of the resident eNodeB, the tracking area where the UE last resided, the UE The cell ID of the most recent resident.

A fifth aspect of the present invention provides a serving gateway SGW, including: a receiver and a transmitter;

The receiver is configured to receive first information of the user equipment UE that is sent by the mobility management entity MME, and receive downlink data of the UE that is sent by the packet data network gateway (PGW);

The transmitter is configured to send a paging message to the evolved base station eNodeB according to the first information received by the receiver when the UE is in an idle state.

With reference to the fifth aspect of the present invention, in a first possible implementation, the downlink data is downlink signaling or downlink user plane data; and the SGW further includes: a processor;

The processor is configured to determine, before the transmitter sends a paging message to the evolved base station eNodeB according to the first information, that an attribute of the downlink data received by the receiver meets a predetermined condition.

With reference to the first possible implementation manner of the fifth aspect of the present invention, in a second possible implementation manner, when the downlink data is the downlink signaling, the attribute of the downlink data meets a predetermined condition, including the following: The ARP value of the default bearer associated with the downlink signaling is less than a preset threshold, and the ARP value of the default bearer associated with the downlink signaling is less than a preset threshold; or

With reference to any one of the fifth aspect to the fifth aspect of the present invention, in a third possible implementation, the first information includes at least one of: indicating by the SGW The indication information that the UE performs paging, or the registration information of the UE.

In conjunction with the third possible implementation of the fifth aspect of the invention, in a fourth possibility In an implementation manner, the transmitter is specifically configured to: when the first information includes the indication information indicating that the SGW is paging the UE, according to the stored international mobile subscriber identity of the UE The code IMSI generates the paging message and sends the paging message to the eNodeB.

With reference to the third possible implementation manner of the fifth aspect of the present invention, in a fifth possible implementation, the transmitter is specifically configured to: when the first information includes registration information of the UE, according to the The registration information of the UE generates the paging message and sends the paging message to the eNodeB.

With reference to any one of the fourth possible implementation manner to the fifth possible implementation manner of the fifth aspect of the present invention, in the sixth possible implementation manner, the transmitter is specifically configured to apply the protocol according to the S1 The AP encapsulates the paging message, and sends the encapsulated paging message to the eNodeB in a General Packet Radio Service Tunneling Protocol user plane GTP-U data packet; or

The transmitter is specifically configured to send the paging message to the eNodeB in a general packet radio service tunneling protocol control plane GTP-C message; or

The transmitter is specifically configured to encapsulate the paging message according to the S1-AP, and send the encapsulated paging message to the eNodeB in a flow control transmission protocol SCTP data packet.

With reference to the fifth possible implementation manner of the fifth to fifth aspects of the present invention, in a seventh possible implementation, the processor is further configured to: After the evolved base station eNodeB sends the paging message, the timer is started;

The transmitter is further configured to: when the processor determines that the bearer modification request of the UE that is sent by the MME is not received before the timer stops, resending the paging message to the eNodeB;

The processor is further configured to restart the timer until the UE determines that the bearer modification request of the UE is received, and stops the timer.

With reference to any one of the fifth aspect to the fifth possible implementation manner of the fifth aspect, in the eighth possible implementation, the transmitter is further configured to The MME sends a paging notification message, where the paging notification message is used to notify the MME to page the UE by the SGW.

With reference to the third possible implementation manner of the fifth aspect of the present invention, in a ninth possible implementation manner, the registration information of the UE includes any one or more of the following combinations: a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, a closed subscriber group CSG identifier list of the UE, an eNodeB address where the UE last camped, and the UE last time The resident eNodeB identity, the tracking area where the UE last resided, and the cell identity of the UE that last camped.

With reference to any of the ninth possible implementation manners of the fifth to fifth aspects of the present invention, in a tenth possible implementation, the processor is further configured to: Before transmitting the paging message to the evolved base station eNodeB, the information is determined to be in an idle state according to the downlink user plane information allocated by the eNodeB to the UE.

A sixth aspect of the present invention provides a mobility management entity MME, including: a processor and a transmitter;

The processor is configured to acquire first information of the user equipment UE, where the first information is used by the serving gateway SGW to page the UE;

The transmitter is configured to send the first information of the UE acquired by the processor to the SGW.

In conjunction with the sixth aspect of the present invention, in a first possible implementation,

The processor is further configured to: before acquiring the first information of the UE, determine that the UE is a UE that needs to be paging by the SGW.

With reference to the first possible implementation manner of the sixth aspect of the present invention, in a second possible implementation manner, the processor is configured to determine, according to the locally configured International Mobile Subscriber Identity (IMSI) list, that the UE is in need The UE that is paged by the SGW; the IMSI list includes an IMSI of a UE that needs to be paged by the SGW;

With reference to the first possible implementation manner of the sixth aspect of the present invention, in a third possible implementation, the MME further includes: a receiver;

The receiver is configured to receive the priority information of the UE sent by the home network server HSS or the UE, where the processor is specifically configured to determine, according to the priority information of the UE received by the receiver The UE is a UE that needs to be paged by the SGW;

or,

The receiver is configured to receive the paging indication information of the UE that is sent by the HSS, where the processor is configured to determine, according to the paging indication information of the UE that is received by the receiver, that the UE is in need The UE that is paged by the SGW; the paging indication information is used to indicate whether the UE is paging by the SGW.

With reference to any one of the sixth aspect to the sixth aspect of the present invention, in a fourth possible implementation, the first information includes at least one of: indicating by the SGW The indication information that the UE performs paging, or the registration information of the UE.

With reference to the fourth possible implementation manner of the sixth aspect of the present invention, in a fifth possible implementation manner, the registration information of the UE includes a combination of any one or more of the following: a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, a closed subscriber group CSG identifier list of the UE, an eNodeB address where the UE last camped, and the UE last time The identity of the resident eNodeB, the tracking area where the UE last resided, and the cell identity of the last time the UE camped.

A seventh aspect of the present invention provides a paging system, including: a serving gateway SGW, a mobility management entity MME, a packet data network gateway PGW, an evolved base station eNodeB, and a user equipment UE;

The PGW is configured to send downlink data of the UE to the SGW.

The MME is configured to acquire first information of the UE; the first information is used by the SGW to page the UE; and the first information of the UE is sent to the SGW;

The SGW is configured to receive first information about the UE that is sent by the MME, and receive downlink data of the UE that is sent by the PGW; when the UE is in an idle state Sending a paging message to the eNodeB according to the first information;

The eNodeB is configured to receive a paging message sent by the SGW, and page the UE according to the paging message.

The SGW, the MME, the paging method, and the system provided by the embodiment of the present invention receive the downlink data of the UE that is sent by the PGW, and after determining that the UE is in the idle state, the SGW sends the homing to the eNodeB according to the received first information of the UE. Call the message to page the UE. Since the paging load of the MME can be shared by the SGW, that is, the number of UEs that are paged by the MME is reduced, the number of paging messages that the MME needs to process is also reduced, thus reducing the CPU of the MME. The impact of performance allows the MME to provide services to other UEs.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

FIG. 1 is a schematic structural diagram of an SGW according to an embodiment of the present invention;

2 is a schematic structural diagram of another SGW according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an MME according to another embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of another MME according to another embodiment of the present disclosure;

FIG. 5 is a flowchart of a paging method according to another embodiment of the present invention;

FIG. 6 is a flowchart of a paging method according to another embodiment of the present invention;

FIG. 7 is a flowchart of a paging method according to another embodiment of the present invention;

FIG. 8 is a flowchart of another paging method according to another embodiment of the present invention;

FIG. 9 is a flowchart of a specific implementation process of a paging method according to another embodiment of the present invention;

FIG. 10 is a schematic structural diagram of an SGW according to another embodiment of the present invention;

FIG. 11 is a schematic structural diagram of an MME according to another embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of a paging system according to another embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Additionally, the terms "system" and "network" are used interchangeably herein. The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

An embodiment of the present invention provides an SGW. As shown in FIG. 1 , the SGW may include: a receiving module 11 and a sending module 12.

The receiving module 11 is configured to receive first information of the UE that is sent by the MME, and receive downlink data of the UE that is sent by the PGW.

The sending module 12 is configured to send a paging message to the eNodeB according to the first information received by the receiving module 11 when the UE is in an idle state.

In the embodiment of the present invention, further, as shown in FIG. 2, the SGW may further include: a processing module 13.

The processing module 13 is configured to determine, before the sending module 12 sends the paging message to the eNodeB according to the first information, that the attribute of the downlink data received by the receiving module 11 meets a predetermined condition.

In the embodiment of the present invention, when the downlink data is the downlink signaling, the attributes of the downlink data satisfy the predetermined condition, including any one of the following: the allocation and retention priority of the bearer to which the downlink signaling belongs (English: Allocation Retention Priority, Abbreviation: ARP value is less than the preset threshold, and the ARP value of the default bearer associated with the downlink signaling is less than the preset threshold; or

When the downlink data is the downlink user plane data, the attribute of the downlink data meets the predetermined condition that the ARP value of the bearer of the downlink user plane data is less than a preset threshold; or

When the downlink data is the downlink user plane data, the attributes of the downlink data satisfy the predetermined condition, including: the service type indication or the differential service code point (DSCP) included in the downlink user plane data, and the pre-configured The strategy matches.

In the embodiment of the present invention, the first information includes at least one of the following: indication information indicating that the UE is paging by the SGW, or registration information of the UE.

In the embodiment of the present invention, the sending module 12 is further configured to: when the first information includes the indication information indicating that the SGW is paging the UE, according to the stored international mobile subscriber identity of the UE (English: International Mobile) The Subscriber Identification Number (IMSI) generates a paging message and sends the paging message to the eNodeB.

In the embodiment of the present invention, the sending module 12 is specifically configured to: when the first information includes the registration information of the UE, generate a paging message according to the registration information of the UE, and send the paging message to the eNodeB.

In the embodiment of the present invention, the sending module 12 is specifically configured to encapsulate the paging message according to the S1 application protocol (S1-Application Protocol, S1-AP for short), and encapsulate the encapsulated paging message. The method is sent to the eNodeB in a general packet radio service tunneling protocol (English: General Packet Radio Service Tunneling Protocol-User, GTP-U) packet; or

The sending module 12 is specifically configured to send the paging message to the eNodeB in a General Packet Radio Service Tunneling Protocol-Control (GTP-C) message.

The sending module 12 is configured to encapsulate the paging message according to the S1-AP, and send the encapsulated paging message to the eNodeB in a Stream Control Transmission Protocol (SCTP) packet. .

In the embodiment of the present invention, the processing module 13 is configured to start a timer after the sending module 12 sends a paging message to the eNodeB.

The sending module 12 is further configured to: when the processing module 13 determines that the bearer modification request of the UE sent by the MME is not received before the timer stops, resending the paging to the eNodeB. Message.

The processing module 13 is further configured to restart the timer, and stops the timer after receiving the bearer modification request of the UE.

In the embodiment of the present invention, the sending module 12 is further configured to send a paging notification message to the MME, where the paging notification message is used to notify the MME to page the UE by the SGW.

In the embodiment of the present invention, the registration information of the UE includes a combination of any one or more of the following: a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, and a UE Closed Subscriber Group (English: Closed Subscriber Group, CSG for short) identifier list, eNodeB address where the UE last resided, eNodeB identifier of the last time the UE resides, the tracking area where the UE last resided, and the last time the UE resides Cell identification.

In the embodiment of the present invention, the processing module 13 is further configured to: before the sending module 12 sends the paging message to the eNodeB according to the first information, determine that the UE is in an idle state according to the downlink user plane information allocated by the eNodeB for the UE.

It should be noted that the specific working process of each functional module in the SGW provided by the embodiment of the present invention may be referred to the specific description of the corresponding process in the method embodiment.

The SGW provided by the embodiment of the present invention receives the downlink data of the UE that is sent by the PGW, and after determining that the UE is in the idle state, sends a paging message to the eNodeB according to the received first information of the UE, so as to page the UE. . Since the paging load of the MME can be shared by the SGW, that is, the number of UEs that are paged by the MME is reduced, the number of paging messages that the MME needs to process is also reduced, thus reducing the CPU of the MME. The impact of performance allows the MME to provide services to other UEs.

In addition, the SGW may determine a corresponding paging policy for the priority of the downlink data of the UE or the service type of the downlink user plane data of the UE. The paging policy is: paging the UE by the SGW or performing the UE on the UE by the MME. Paging). Since the type of service used by the UE and the priority of the service are fully considered when determining the paging policy, Therefore, the differentiated paging mode not only reduces the paging load of the MME, so that the MME can provide services for more UEs, and also ensures that UEs using high priority services can be quickly paged, thereby The user experience is guaranteed.

An embodiment of the present invention provides an MME. As shown in FIG. 3, the MME may include: a processing module 21 and a sending module 22.

The processing module 21 is configured to acquire first information of the UE, where the first information is used by the SGW to page the UE.

The sending module 22 is configured to send the first information of the UE acquired by the processing module 21 to the SGW.

In the embodiment of the present invention, the processing module 21 is further configured to: before acquiring the first information of the UE, determine that the UE is a UE that needs to be SGW paging.

In the embodiment of the present invention, the processing module 21 is configured to determine, according to the locally configured IMSI list, that the UE is a UE that needs to be SGW paging, and the IMSI list includes an IMSI of the UE that needs to be SGW paging.

In the embodiment of the present invention, further, as shown in FIG. 4, the MME may further include: a receiving module 23.

The receiving module 23 is configured to receive the priority information of the UE that is sent by the UE, or the UE, and the processing module 21 is used to receive the priority information of the UE according to the receiving module 23. Determining that the UE is a UE that requires SGW paging; or,

The receiving module 23 is configured to receive the paging indication information of the UE that is sent by the HSS, and the processing module 21 is configured to determine, according to the paging indication information of the UE that is received by the receiving module 23, that the UE is a UE that needs to be SGW paging, and the paging indication The information is used to indicate whether the UE is paged by the SGW.

In the embodiment of the present invention, the registration information of the UE includes a combination of any one or more of the following: a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, and a UE CSG identification list, the last time the UE was stationed The eNodeB address that remains, the identity of the eNodeB where the UE last resided, the tracking area where the UE last resided, and the cell identity of the last time the UE resides.

It should be noted that the specific working process of each functional module in the MME provided by the embodiment of the present invention may be referred to the specific description of the corresponding process in the method embodiment, and details are not described in detail herein.

After obtaining the first information of the UE, the MME provided by the embodiment of the present invention sends the first information of the acquired UE to the SGW, so that the SGW receives the downlink data of the UE, and after determining that the UE is in the idle state, Placing the UE according to the first information, so that the number of UEs that are paged by the MME is reduced, and therefore, the number of paging messages that the MME needs to process is also reduced, thus reducing the CPU of the MME. The impact of performance allows the MME to provide services to other UEs.

Another embodiment of the present invention provides a paging method. As shown in FIG. 5, the method may include:

S301. The SGW receives the first information of the UE that is sent by the MME.

The first information of the UE may be an explicit indication information indicating that the SGW is paging the UE, or may be an implicit indication information, that is, when the first information received by the SGW includes the registration information of the UE, That is, the UE is instructed to page by the SGW.

S302. The SGW receives downlink data of the UE that is sent by the PGW.

S303. When the UE is in an idle state, the SGW sends a paging message to the eNodeB according to the first information.

After determining, according to the received downlink data, that the UE is in an idle state, the SGW may send a paging message to the eNodeB according to the first information. The paging message includes an identifier of the UE, and the identifier may be an IMSI or a temporary identifier, and the temporary identifier may be a system architecture evolution temporary mobile subscriber identity (English: System Archiitechure Evolution Temporary Mobile Subscriber Identity, referred to as: S-TMSI) can also be the only temporary identifier in the world (English: Globally Unique Temporary Identity, referred to as GUTI).

The paging method provided by the embodiment of the present invention receives the downlink data of the UE that is sent by the PGW, and after determining that the UE is in an idle state, the SGW is configured according to the received UE. The first information sends a paging message to the eNodeB to page the UE. Since the paging load of the MME can be shared by the SGW, that is, the number of UEs that are paged by the MME is reduced, the number of paging messages that the MME needs to process is also reduced, thus reducing the CPU of the MME. The impact of performance allows the MME to provide services to other UEs.

Another embodiment of the present invention provides a paging method. As shown in FIG. 6, the method may include:

S401. The MME acquires first information of the UE.

The first information is used by the SGW to page the UE, and the UE may be all UEs managed by the MME, or may be the UE that needs to be SGW paging determined by the MME.

S402. The MME sends the first information of the UE to the SGW.

The paging method provided by the embodiment of the present invention, after acquiring the first information of the UE, the MME sends the first information of the acquired UE to the SGW, so that the SGW receives the downlink data of the UE, and determines that the UE is idle. After the state, the UE is paged according to the first information, so that the number of UEs that are paged by the MME is reduced, and therefore, the number of paging messages that the MME needs to process is also reduced, thus reducing the pair. The impact of the CPU performance of the MME enables the MME to provide services for other UEs.

Another embodiment of the present invention provides a paging method. As shown in FIG. 7 and FIG. 8, the method may include:

S501. The MME determines that the UE is a UE that needs SGW paging.

The determining manner that the MME determines that the UE is a UE that needs SGW paging may be any one of the following manners:

Manner 1: The MME determines that the UE is a UE that needs SGW paging according to the locally configured IMSI list.

The IMSI list includes the IMSI of the UE that needs to be paged by the SGW. The MME may search for a locally configured IMSI list according to the IMSI of the UE. If the IMSI list includes the IMSI of the UE, the MME may determine that the UE is a UE that needs SGW paging.

Manner 2: The MME receives the priority information of the UE sent by the HSS or the UE, and determines that the UE is the UE that needs to be SGW paging according to the priority information of the UE.

The priority information of the UE may be included in the subscription data of the UE, and is sent by the HSS to the MME. Exemplarily, the priority information of the UE may be high or low. When the MME receives the priority information included in the subscription data of the UE that is sent by the HSS, the UE may determine that the UE is a UE that needs to be SGW.

Alternatively, the priority information of the UE may be sent by the UE to the MME. Exemplarily, the priority information of the UE may be high or low. When the MME receives the priority information sent by the UE to be low, the MME may determine that the UE is a UE that needs SGW paging.

It should be noted that the present invention only takes the priority information of the UE as high or low as an example. Of course, the priority information of the UE may also be level 1, level 2, ... level, and the present invention is not limited thereto. The way the priority information is represented. Similarly, the UE with the lower priority information may be the UE that needs to be paged by the SGW. Of course, the UE with the high priority information may also be the UE that needs to be paged by the SGW. The present invention is only described as being at a certain priority. The UE may be a UE that needs to be paged by the SGW, and does not limit the specific priority of the UE that needs to be paged by the SGW. That is, the present invention only indicates that some UEs can be paged by the SGW.

Manner 3: The MME receives the paging indication information of the UE that is sent by the HSS, and determines that the UE is the UE that needs the SGW paging according to the paging indication information of the UE.

The paging indication information is used to indicate whether the UE is paging by the SGW, and the paging indication information of the UE may be included in the subscription data of the UE, and sent by the HSS to the MME. For example, the paging indication information may be paging by the SGW and paging by the MME. When the MME receives the paging indication information sent by the HSS for paging by the SGW, the MME may determine that the UE needs to be SGW. Called UE.

S502. The MME acquires the first information of the UE.

The first information is used by the SGW to page the UE. The first information may include at least one of: indication information indicating that the UE is paged by the SGW, or registration information of the UE. The registration information of the UE may include a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, a CSG identifier list of the UE, an eNodeB address where the UE last resided, and a last station of the UE. The remaining eNodeB identifier, the tracking area where the UE last resided, and the latest one of the UEs Any one or more of the sub-resident cell identifiers.

Exemplarily, the process of the MME acquiring the first information of the UE may be: the MME may be sent by the other network element to the MME during the interaction with the UE, or may be allocated by the MME for the UE. For example, the temporary identifier of the UE included in the first information of the UE is allocated by the MME for the UE, and the cell identifier of the last time the UE is included in the first information of the UE is reported by the eNodeB during the interaction with the UE. To the MME.

S503. The MME sends the first information of the UE to the SGW.

The MME may send the first information of the UE to the SGW after determining that the UE is the UE that needs the SGW paging, and after acquiring the first information of the UE.

Optionally, the MME may send the first information to the SGW in the release radio bearer request message. Of course, the first information may also be carried in other messages sent by the MME to the SGW, and the embodiment of the present invention is not limited herein.

S504. The SGW receives the first information sent by the MME.

The SGW may save the first information after receiving the first information sent by the MME.

It should be noted that the paging method provided by the embodiment of the present invention may repeatedly perform S501-S504, so that the first information of multiple UEs may be saved in the SGW. Of course, the paging method provided by the embodiment of the present invention may also perform S502-S504 instead of performing S501, that is, the MME may send the first information of all UEs managed by itself without determining the UE that needs to be paged by the SGW. To the SGW, so that the first information of all UEs managed by the MME can be saved in the SGW.

S505. The SGW receives downlink data of the UE that is sent by the PGW.

The downlink data includes a tunnel identifier (English: Tunnel Identity, TEID for short) and an Internet Protocol (IP) address for the UE, and the downlink data may be downlink signaling or downlink user plane data. When the SGW receives the downlink data of the UE sent by the PGW as the downlink signaling, the downlink data includes the control plane TEID and the IP address allocated by the SGW to the UE; when the SGW receives the downlink data of the UE sent by the PGW as the downlink user plane data, , the downlink data package The user plane TEID and IP address assigned by the SGW to the UE.

S506. The SGW determines that the UE is in an idle state according to downlink user plane information allocated by the eNodeB to the UE.

The downlink user plane information is a downlink user plane TEID and an IP address. Exemplarily, if the downlink user plane TEID and IP address allocated by the eNodeB for the UE are not present in the context of the UE that is saved by the SGW, it is determined that the UE is in an idle state. Certainly, the SGW may determine that the UE is in an idle state by using other methods. For example, if the SGW detects that the eNodeB in the context of the UE that is saved by the SGW detects that the downlink user plane TEID and the IP address allocated to the UE are invalid, the UE determines that the UE is idle. state. The embodiment of the present invention does not limit the manner in which the SGW determines that the UE is in an idle state.

The downlink data of the UE transmitted by the PGW is received by the SGW, and after determining that the UE is in an idle state, the paging procedure is triggered. Specifically, in a possible implementation manner, as shown in FIG. 7, if the SGW determines, according to the received downlink data, that the first information of the UE is stored, the SGW performs S507-S508, if the SGW is configured according to the received downlink. The data determines that the first information of the UE is not stored by itself, and sends a downlink data notification message to the MME, so that the MME pages the UE. In another possible implementation manner, as shown in FIG. 8, if the SGW determines that the first information of the UE is stored according to the received downlink data, executing S508, if the SGW determines that it is not based on the received downlink data. After storing the first information of the UE, the downlink data notification message is sent to the MME, so that the MME pages the UE.

The SGW may allocate a corresponding TEID and an IP address to each UE that is managed by the SGW, and store the allocated TEID and the IP address, and after receiving the first information of a certain UE sent by the MME, the SGW may The first information of the UE is correspondingly stored. In this way, after receiving the downlink data of the UE sent by the PGW, and determining that the UE is in the idle state, the SGW may determine whether the TEID and the IP of the UE are stored in the SGW according to the TEID and the IP address of the UE included in the downlink data. The first information of the UE corresponding to the address.

S507. The SGW determines that the attribute of the downlink data satisfies a predetermined condition.

Among them, attributes can include ARP, service type, and DSCP.

When the downlink data is downlink signaling, if the attribute of the downlink signaling satisfies any of the following conditions, the SGW determines that the attribute of the downlink signaling satisfies a predetermined condition.

Condition 1: The ARP value of the bearer to which the downlink signaling belongs is less than a preset threshold.

Condition 2: The ARP value of the default bearer associated with the downlink signaling is less than a preset threshold.

The preset threshold may be pre-configured on the SGW.

When the downlink data is the downlink user plane data, in a possible implementation manner, if the ARP value of the bearer of the downlink user plane data is less than a preset threshold, the SGW determines that the attribute of the downlink user plane data satisfies the predetermined condition. In another possible implementation manner, if the service type indication or the DSCP included in the downlink user plane data matches the pre-configured policy, the SGW determines that the attribute of the downlink user plane data satisfies the predetermined condition. For example, the SGW pre-configured policy may be that the non-voice service is paged by itself, and the voice service is paged by the MME, so that when the service type of the downlink user plane data received by the SGW is non-voice service, the downlink is If the service type included in the user plane data matches the pre-configured policy, the attribute of the downlink user plane data is determined to satisfy the predetermined condition.

It should be noted that, in this embodiment of the present invention, the voice service and the non-voice service are used as an example. The specific service type is not limited, and the corresponding service type can be selected according to the requirements of the actual application scenario. In the meantime, the embodiment of the present invention does not limit the specific content of the pre-configured policy in the SGW, and may also perform corresponding configuration according to the requirements of the actual application scenario.

When the SGW determines that the attribute of the received downlink data meets the predetermined condition, the SGW may be performed to send a downlink data notification message to the MME, so that the MME may perform the downlink information notification message to the MME, when the SGW determines that the attribute of the received downlink data does not meet the predetermined condition. Paging.

The SGW may determine a corresponding paging policy for the priority of the downlink data of the UE or the type of service used by the UE (the paging policy is: paging the UE by the SGW or paging the UE by the MME). Specifically, because more paging policy data is stored on the MME, a more efficient paging can be performed, which can ensure fast paging to the UE, thereby providing services for the UE, and low priority services to the quality of service. There is no special requirement, therefore, the UE using the high priority service can be paged by the MME, and the UE using the low priority service can be paged by the SGW. The above differentiated paging policy not only reduces the paging load of the MME, but also enables the MME to provide services for more UEs, and also fully considers the service type used by the UE, ensuring that UEs using high priority services can be quickly Paging, thus ensuring the user experience.

S508. The SGW sends a paging message to the eNodeB according to the first information.

In a possible implementation, when the first information includes the indication information indicating that the SGW is paging the UE, the S508 may be specifically: the SGW generates a paging message according to the IMSI of the UE, and the paging message is generated. Send to eNodeB.

The SGW stores the IMSI of the UE, and the IMSI may be sent by the MME to the SGW in the process of the MME notifying the SGW to establish a session. The paging message includes the IMSI of the UE.

In another possible implementation manner, when the first information includes the registration information of the UE, the S508 may be specifically: the SGW generates a paging message according to the registration information of the UE, and sends the paging message to the eNodeB.

The paging message includes a temporary identifier of the UE, a tracking area list of the UE, a paging period of the UE, a CSG identifier list of the UE, a tracking area where the UE last camped, and one of the last used cell identifiers of the UE. Kind or more.

Since the paging message cannot be sent between the eNodeB and the SGW in the prior art, in order to enable the paging message to be sent between the eNodeB and the SGW, the same protocol needs to be specified between the eNodeB and the SGW, so that the eNodeB can identify the sending by the SGW. Paging message, optionally, the paging message can be sent between the eNodeB and the SGW by using any one of the GTP-U, the GTP-C, and the SCTP. When the GTP-U is used between the eNodeB and the SGW, the SGW can be used. The sending mode 1 sends a paging message to the eNodeB. When the GTP-C is used between the eNodeB and the SGW, the SGW can send the paging message to the eNodeB by using the sending mode 2. When the SCTP is used between the eNodeB and the SGW, the SGW can be used. The sending mode 3 is to send a paging message to the eNodeB, where the specific descriptions of the sending mode 1, the sending mode 2, and the sending mode 3 are as follows.

Transmission mode 1: The SGW encapsulates the paging message according to the S1-AP, and the encapsulated paging message is included in the GTP-U data packet and sent to the eNodeB.

The GTP-U data packet header includes a TEID for determining that the message included in the GTP-U data packet is a paging message. For example, the method for determining that the GTP-U data packet includes a TEID of the paging message is 1001, and when the eNodeB receives the GTP-U data packet sent by the SGW, determining that the GTP-U data packet header includes Whether the value of the TEID is 1001, if yes, determining that the message included in the GTP-U data packet is a paging message, and at this time, the paging message included in the GTP-U data packet can be read, and the paging message is A paging message is sent to the UE.

It should be noted that the present invention does not limit the value of the TEID used to determine the message included in the GTP-U data packet, and may set a corresponding value according to the requirements of the actual application scenario.

Transmission mode 2: The SGW includes the paging message in the GTP-C message and sends it to the eNodeB.

The GTP-C message header includes an identifier (English: Identity, ID: ID) for determining that the message included in the GTP-C data packet is a paging message. For example, the value of the ID of the message included in the GTP-C message is 1010. When the eNodeB receives the GTP-C message sent by the SGW, it determines the ID included in the GTP-C message header. If the value is 1010, if yes, it is determined that the message included in the GTP-C message is a paging message, and at this time, the paging message included in the GTP-C message can be read, and the paging message is read. Send to the UE.

It should be noted that the present invention does not limit the value of the ID of the paging message used to determine the message included in the GTP-C message, and may set the corresponding value according to the requirements of the actual application scenario.

The third mode is that the SGW encapsulates the paging message according to the S1-AP, and the encapsulated paging message is included in the SCTP data packet and sent to the eNodeB.

When the SGW sends a paging message to the eNodeB by using the transmission mode 1 or the transmission mode 2, the GTP-U adopted by the SGW in the transmission mode 1 and the GTP-C in the transmission mode 2 are both unacknowledged messages, in order to ensure the message. Passing reliability, in the direction After the eNodeB sends the paging message, the SGW starts a timer. When it determines that the UE does not receive the bearer modification request of the UE sent by the MME before stopping the timer, it resends the paging message to the eNodeB, and restarts the timer until receiving the UE. After the modification request is carried, the timer is stopped.

When the SGW sends a paging message to the eNodeB in the sending mode, although the SCTP used by the SGW in the sending mode 3 has an acknowledgment mechanism, the paging message may be lost when it is sent through the air interface, in order to further ensure the message. The reliability of the delivery, optionally, the SGW may also start a timer. When it is determined that the bearer modification request of the UE sent by the MME is not received before the timer stops, the paging message is resent to the eNodeB, and the timer is restarted. The timer is stopped until the UE's bearer modification request is received.

Optionally, the SGW may send a paging notification message to the MME.

The paging notification message is used to notify the MME that the UE is paging by the SGW. When the MME receives the paging notification message sent by the SGW, the MME can determine that the UE is paging by the SGW, that is, it does not need to page the UE itself. The notification message may be a downlink data notification message, or may be another message, or may be a newly defined message. The present invention does not limit the specific format of the notification message.

In order to shorten the duration of the SGW paging UE, in an optional implementation manner, in S504, when the SGW receives the first information sent by the MME, including the eNodeB address list of the UE, the S508 may be specifically: the SGW is according to the first The eNodeB address list of the UE included in the information sends a paging message to each eNodeB in the eNodeB address list.

In another optional implementation manner, in S504, when the SGW receives the first information sent by the MME, including the tracking area list of the UE, and does not include the eNodeB address list of the UE, the S508 may be specifically: the SGW is according to the first The tracking area list of the UE included in the information is obtained, and the address of the eNodeB corresponding to each tracking area identifier in the tracking area list is obtained, so that the eNodeB address list of the UE is obtained, and the eNodeB address list is further obtained according to the obtained eNodeB address list of the UE. Each of The eNodeB sends a paging message.

The paging message includes a tracking area list of the UE. After the eNodeB receives the paging message sent by the SGW, the eNodeB sends the paging message to the UE only in the cell included in the tracking area list.

The manner in which the SGW obtains the address of the eNodeB corresponding to each tracking area identifier in the tracking area list according to the tracking area list of the UE included in the first information may be any one of the following manners:

Manner 1: The address of the eNodeB corresponding to each tracking area identifier in the tracking area list is pre-stored in the SGW.

The SGW may directly obtain an address of the eNodeB corresponding to each tracking area identifier in the tracking area list according to the tracking area list of the UE included in the first information.

Manner 2: For each tracking area identifier in the tracking area list, the SGW sends a tracking area identifier to the domain name system (English: Domain Name Service, DNS for short), so that the DNS obtains the eNodeB corresponding to the tracking area identifier according to the tracking area identifier. The address is sent to the SGW by the obtained eNodeB. At this time, the SGW can receive the address of the eNodeB corresponding to the tracking area identifier sent by the DNS.

The address of the eNodeB corresponding to each tracking area identifier in the tracking area list is pre-stored in the DNS.

In order to save power consumption of the UE, further, when the paging period of the UE is pre-stored in the MME, in S504, the first information sent by the SGW to the MME may include a paging period of the UE, and at this time, the SGW sends the paging time to the eNodeB. The paging message includes a paging period of the UE, such that after the eNodeB receives the paging message sent by the SGW, the paging message is sent to the UE only during the paging period.

In order to reduce the air interface load, the SGW receives the CSG identifier list of the UE, and the SGW receives the CSG identifier list of the UE, and the SGW sends the CSG identifier list to the eNodeB. The paging message may include a CSG identity list of the UE, such that after the eNodeB receives the paging message sent by the SGW, only the CSG identity in the CSG identity list matches. A paging message is sent to the UE in the cell. The eNodeB can provide services for multiple cells.

When the SGW receives the first information sent by the MME, including the temporary identifier of the UE, the tracking area list of the UE, the paging period of the UE, and the CSG identifier list of the UE, the paging process of the SGW to the UE is: the SGW is included according to the first information. The tracking area list of the UE acquires the address of the eNodeB corresponding to each tracking area identifier in the tracking area list, thereby obtaining the eNodeB address list of the UE, and further according to the obtained eNodeB address list of the UE, to each of the eNodeB address lists The eNodeB sends a paging message, and after the eNodeB receives the paging message sent by the SGW, according to the CSG identifier list of the UE included in the paging message, the temporary identifier of the UE, and the paging cycle of the UE, only in the paging cycle. A paging message is sent to the UE in the cell in which the CSG identifier in the CSG identifier list matches.

It should be noted that, when the SGW receives the first information sent by the MME, including the temporary identifier of the UE, the eNodeB address list of the UE, the paging period of the UE, and the CSG identifier list of the UE, the paging process of the SGW to the UE may refer to the present invention. In the embodiment, when the first information of the UE includes the temporary identifier of the UE, the tracking area list of the UE, the paging period of the UE, and the CSG identifier list of the UE, the specific description of the paging process of the UE by the SGW is performed by the embodiment of the present invention. This will not be repeated one by one.

When the SGW receives the first information sent by the MME, including the eNodeB address that the UE last camped on, the SGW may first send a paging message to the eNodeB according to the eNodeB address, and if the UE cannot be paged, the eNodeB address to the UE Each eNodeB in the list sends a paging message. Similarly, when the SGW receives the first information sent by the MME that includes the tracking area that the UE last camped on, the SGW first sends a paging message to the eNodeB corresponding to the tracking area, and if the UE cannot be paged, the UE sends the paging message to the UE. Each eNodeB corresponding to the tracking area list sends a paging message, so that not only the paging duration can be shortened, but also network paging resources can be saved.

It should be noted that, when the SGW receives the first information sent by the MME, including the identifier of the eNodeB that the UE last camped on or the cell identifier that the UE last camped on, the paging process of the SGW to the UE may refer to when the SGW receives the MME and sends the MME. First letter The paging process of the SGW to the UE when the address of the eNodeB that the UE last resides is not described herein.

To save the power consumption of the UE, the UE only listens to the paging message sent by the eNode during the paging period, and after receiving the paging message sent by the eNodeB, determines whether the identifier of the UE included in the paging message is the same as its own identifier. If the same, the service request message is sent to the MME; if not, the service request message is not sent to the MME.

The service request message includes a reason value for initiating the service request. For example, the cause value is a mobile terminal access (English: Mobile Terminal-Access, referred to as mt-Access). When the MME receives the service request message that is sent by the UE and carries the cause value of the mt-Access, the MME may use the reason. The value determines that the UE needs to access the network. At this time, the radio bearer establishment process can be triggered.

In order to facilitate the understanding by those skilled in the art, the implementation process of the paging method provided by the embodiment of the present invention is described by taking the wireless connection release procedure of the UE as an example. Specifically, as shown in FIG. 9, the process may include:

S601. The eNodeB sends a release wireless connection message to the UE.

S602. The eNodeB sends a release UE context request message to the MME.

S603. The MME sends a release radio bearer request message to the SGW.

The MME may send the first information of the UE in the release radio bearer request message to the SGW when the MME determines that the UE is the UE that needs to be SGW. The first information may be indication information indicating that the UE is paging by the SGW, or the first information includes registration information of the UE. The registration information of the UE may include a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, a CSG identifier list of the UE, an eNodeB address where the UE last resided, and a last station of the UE. Any one or more of the remaining eNodeB identity, the tracking area where the UE last camped, and the cell identity where the UE last resided.

It should be noted that, when the MME determines whether the UE is a UE that needs to be paged by the SGW, reference may be made to the specific description of the related content in the foregoing embodiment of the present invention, which is not repeatedly described herein.

S604. The SGW saves the first information of the UE.

The SGW can receive the first information of the UE, and the SGW saves the first information of the received UE, because the first information of the UE is carried in the release radio bearer request message sent by the MME.

S605. The SGW sends a release radio bearer response message to the MME.

S606. The MME sends a UE context release command message to the eNodeB.

S607. The eNodeB sends a radio resource control connection release message to the UE.

S608. The eNodeB sends a UE context release complete message to the MME.

S609. The SGW receives downlink signaling or downlink user plane data of the UE that is sent by the PGW.

S610. The SGW determines that an attribute of the downlink signaling or the downlink user plane data satisfies a predetermined condition.

It should be noted that the determining process of the SGW to determine that the attributes of the downlink signaling or the downlink user plane data meet the predetermined condition may refer to the specific description in the related content of the foregoing embodiment of the present invention, and the embodiments of the present invention are not described herein again.

S611. The SGW sends a paging message to the eNodeB according to the first information.

The paging message includes one of an identifier of the UE, a tracking area list of the UE, a paging period of the UE, a CSG identifier list of the UE, a tracking area where the UE last camped, and a cell identifier of the last time the UE resides. Or a variety. The identifier may be an IMSI or a temporary identifier. The temporary identifier may be S-TMSI or GUTI. The SGW may send a paging message to the eNodeB by using any one of GTP-U, GTP-C, and SCTP.

When the SGW sends a paging message to the eNodeB by using the GTP-U, the S611 specifically: the SGW encapsulates the paging message according to the format of the S1-AP, and sends the encapsulated paging message to the GTP-U data packet. To eNodeB.

When the SGW sends a paging message to the eNodeB by using the GTP-C, the S611 specifically: the SGW carries the paging message in the GTP-C message and sends the message to the eNodeB.

When the SGW sends the paging message to the eNodeB by using the SCTP, the S611 specifically: the SGW encapsulates the paging message according to the format of the S1-AP, and encapsulates the paging message. The installed paging message is sent to the eNodeB in the SCTP packet.

It should be noted that, the process in which the SGW sends the paging message to the eNodeB according to the first information may refer to the specific description in the related content of the foregoing embodiment of the present invention, and the embodiments of the present invention are not further described herein.

S611a. Optionally, the SGW may send a downlink data notification message to the MME.

It should be noted that the SGW may notify the MME by sending a downlink data notification message to the MME, and paging the UE by the SGW. Of course, the SGW can also notify the MME by sending other messages to the MME, and the SGW is used to page the UE. The present invention does not limit the specific format of the notification message used to notify the MME that the SGW is paging the UE.

S612. The eNodeB sends a paging message to the UE.

S613. The UE sends a service request message to the MME.

The service request message includes a reason value for initiating the service request. The MME may determine that the UE needs to access the network according to the cause value of the initiating service request included in the service request message. At this time, the radio bearer establishment process may be triggered.

S614. The MME sends a bearer modification request message to the SGW.

When the SGW sends a paging message to the eNodeB by using the GTP-U or the GTP-C, since both the GTP-U and the GTP-C are unacknowledged messages, in order to ensure the reliability of the message delivery, after sending the paging message to the eNodeB, The SGW starts the timer, and when it is determined that the bearer modification request of the UE sent by the MME is not received before the timer is stopped, the paging message is resent to the eNodeB, and the timer is restarted until the bearer modification request of the UE is received, and the timing is stopped. Device.

When the SGW sends a paging message to the eNodeB by using the SCTP, although the SCTP itself has an acknowledgment mechanism, when the paging message is sent through the air interface, there may be a loss problem. To further ensure the reliability of the message delivery, the SGW is optional. The timer may also be started. When it is determined that the bearer modification request of the UE sent by the MME is not received before the timer is stopped, the paging message is resent to the eNodeB, and the timer is restarted until after receiving the bearer modification request of the UE, stopping. Timer.

The paging method provided by the embodiment of the present invention is received by the UE that receives the PGW transmission. The data is transmitted, and after determining that the UE is in an idle state, the SGW sends a paging message to the eNodeB according to the received first information of the UE, so as to page the UE. Since the paging load of the MME can be shared by the SGW, that is, the number of UEs that are paged by the MME is reduced, the number of paging messages that the MME needs to process is also reduced, thus reducing the CPU of the MME. The impact of performance allows the MME to provide services to other UEs.

In addition, the SGW may determine a corresponding paging policy for the priority of the downlink data of the UE or the service type of the downlink user plane data of the UE. The paging policy is: paging the UE by the SGW or performing the UE on the UE by the MME. Paging). Since the service type used by the UE and the priority of the service are fully considered when determining the paging policy, the paging mode of the MME is reduced not only by the differentiated paging mode, but also by the MME. The UE provides the service, and also ensures that the UE using the high priority service can be quickly paged, thereby ensuring the user experience.

An embodiment of the present invention provides an SGW. As shown in FIG. 10, the SGW may include a receiver 71 and a transmitter 72.

The receiver 71 is configured to receive first information of the UE that is sent by the MME, and receive downlink data of the UE that is sent by the PGW.

The transmitter 72 is configured to send a paging message to the eNodeB according to the first information received by the receiver 71 when the UE is in an idle state.

In the embodiment of the present invention, the downlink data is downlink signaling or downlink user plane data, and the SGW may further include: a processor 73.

The processor 73 is configured to determine, before the transmitter 72 sends the paging message to the eNodeB according to the first information, that the attribute of the downlink data received by the receiver 71 meets a predetermined condition.

In the embodiment of the present invention, when the downlink data is the downlink signaling, the attribute of the downlink data meets the predetermined condition, including any one of the following: the ARP value of the bearer to which the downlink signaling belongs is less than a preset threshold, and the downlink signaling is associated. The ARP value of the default bearer is less than the preset threshold; or

When the downlink data is the downlink user plane data, the attribute of the downlink data satisfies the predetermined condition that the service type indication or DSCP included in the downlink user plane data matches the pre-configured policy.

In the embodiment of the present invention, the transmitter 72 is configured to: when the first information includes the indication information indicating that the SGW is paging the UE, generate a paging message according to the stored IMSI of the UE, and send the paging message. The message is sent to the eNodeB.

In the embodiment of the present invention, the transmitter 72 is specifically configured to: when the first information includes the registration information of the UE, generate a paging message according to the registration information of the UE, and send the paging message to the eNodeB.

In the embodiment of the present invention, the transmitter 72 is specifically configured to encapsulate the paging message according to the S1-AP, and include the encapsulated paging message in the GTP-U data packet to be sent to the eNodeB; or

The transmitter 72 is specifically configured to send the paging message to the eNodeB in the GTP-C message; or

The transmitter 72 is configured to encapsulate the paging message according to the S1-AP, and include the encapsulated paging message in the SCTP data packet and send the message to the eNodeB.

In the embodiment of the present invention, the processor 73 is further configured to start a timer after the transmitter 72 sends the paging message to the eNodeB according to the first information.

The transmitter 72 is further configured to: when the processor 73 determines that the bearer modification request of the UE sent by the MME is not received before the timer stops, resending the paging message to the eNodeB.

The processor 73 is further configured to restart the timer until the UE determines that the bearer modification request of the UE is received, and stops the timer.

In the embodiment of the present invention, the transmitter 72 is further configured to send a paging notification message to the MME, where the paging notification message is used to notify the MME that the UE is paging by the SGW.

In the embodiment of the present invention, further, the registration information of the UE includes a combination of any one or more of the following: a temporary identifier of the UE, a tracking area list of the UE, and an eNodeB of the UE. The address list, the paging period of the UE, the CSG identity list of the UE, the eNodeB address of the UE that last camped, the eNodeB identity of the UE that last camped, the tracking area where the UE last resided, and the cell identity of the UE that last camped .

In the embodiment of the present invention, the processor 73 is further configured to determine, according to the downlink user plane information allocated by the eNodeB for the UE, whether the UE is in an idle state before the transmitter 72 sends the paging message to the eNodeB according to the first information. .

An embodiment of the present invention provides an MME. As shown in FIG. 11, the MME may include: a processor 81 and a transmitter 82.

The processor 81 is configured to acquire first information of the UE, where the first information is used by the SGW to page the UE.

The transmitter 82 is configured to send the first information of the UE acquired by the processor 81 to the SGW.

In the embodiment of the present invention, the processor 81 is further configured to: before acquiring the first information of the UE, determine that the UE is a UE that needs SGW paging.

In the embodiment of the present invention, the processor 81 is specifically configured to determine, according to the locally configured IMSI list, that the UE is a UE that needs SGW paging, where the IMSI list includes an IMSI of a UE that needs to be SGW paging.

In the embodiment of the present invention, the MME may further include: a receiver 83.

The receiver 83 is configured to receive the priority information of the UE sent by the HSS or the UE, where the processor 81 is configured to determine, according to the priority information of the UE received by the receiver 83, that the UE is a UE that needs to be SGW paging; or

The receiver 83 is configured to receive paging indication information of the UE that is sent by the HSS, where the processor 81 is configured to determine, according to the paging indication information of the UE received by the receiver 83, that the UE is a UE that needs to be SGW paging, and the paging is performed. The indication information is used to indicate whether the UE is paged by the SGW.

In the embodiment of the present invention, the registration information of the UE includes a combination of any one or more of the following: a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, and a UE The CSG identifier list, the eNodeB address where the UE last resided, the identifier of the eNodeB where the UE last resided, the tracking area where the UE last resided, and the cell identifier of the last time the UE camped.

After obtaining the first information of the UE, the MME provided by the embodiment of the present invention sends the first information of the acquired UE to the SGW, so that the SGW receives the downlink data of the UE, and after determining that the UE is in the idle state, Placing the UE according to the first information, so that the number of UEs that are paged by the MME is reduced, and therefore, the number of paging messages that the MME needs to process is also reduced, thus reducing the pair. The impact of the CPU performance of the MME enables the MME to provide services for other UEs.

Another embodiment of the present invention provides a paging system, which may include: SGW91, MME92, PGW93, eNodeB94, and UE95.

The PGW 93 is configured to send downlink data of the UE 95 to the SGW 91.

The MME 92 is configured to acquire first information of the UE 95, and send the first information of the UE 95 to the SGW 91. The first information is used by the SGW 91 to page the UE 95.

The SGW 91 is configured to receive the first information of the UE 95 sent by the MME 92, receive the downlink data of the UE 95 sent by the PGW 93, and send the paging message to the eNodeB 94 according to the first information when the UE 95 is in the idle state.

The eNodeB 94 is configured to receive a paging message sent by the SGW 91, and page the UE 95 according to the paging message.

It should be noted that the specific working process of each functional module included in each network element in the paging system provided by the embodiment of the present invention may be referred to the specific description of the corresponding process in the method embodiment.

The paging system provided by the embodiment of the present invention, after receiving the downlink data of the UE sent by the PGW, and after determining that the UE is in an idle state, the SGW sends a paging message to the eNodeB according to the received first information of the UE, so as to Paging. Since the paging load of the MME can be shared by the SGW, that is, the number of UEs that are paged by the MME is reduced, the number of paging messages that the MME needs to process is also reduced, thus reducing the CPU of the MME. The impact of performance allows the MME to provide services to other UEs.

Through the description of the above embodiments, those skilled in the art can clearly It is understood that, for the convenience and simplicity of the description, only the division of the above functional modules is illustrated. In practical applications, the above functional assignments can be completed by different functional modules as needed, that is, the internal structure of the device is divided into different Functional modules to perform all or part of the functions described above. For the specific working process of the device described above, refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. The combination may be integrated into another device, or some features may be ignored or not performed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed to multiple different places. . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a readable storage medium. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a device (which may be a microcontroller, chip, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: U Disk, mobile hard disk, read-only memory (English: Read-Only Memory, ROM for short), random access memory (English: Random Access Memory, RAM: CD), disk or optical disk, etc. .

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

A service gateway SGW, comprising: a receiving module and a sending module;

The receiving module is configured to receive first information of the user equipment UE that is sent by the mobility management entity MME, and receive downlink data of the UE that is sent by the packet data network gateway (PGW);

The sending module is configured to send a paging message to the evolved base station eNodeB according to the first information received by the receiving module when the UE is in an idle state.
The SGW according to claim 1, wherein the downlink data is downlink signaling or downlink user plane data; the SGW further includes: a processing module;

The processing module is configured to determine, before the sending module sends a paging message to the evolved base station eNodeB according to the first information, that an attribute of the downlink data received by the receiving module meets a predetermined condition.
The SGW according to claim 2, wherein when the downlink data is the downlink signaling, the attribute of the downlink data satisfies a predetermined condition, including any one of the following: an allocation of a bearer to which the downlink signaling belongs And the ARP value of the default bearer associated with the downlink signaling is less than a preset threshold; or

When the downlink data is the downlink user plane data, the attribute of the downlink data that meets the predetermined condition includes: the ARP value of the bearer to which the downlink user plane data belongs is less than a preset threshold; or

When the downlink data is the downlink user plane data, the attribute of the downlink data satisfies the predetermined condition that the service type indication or the differential service code point DSCP included in the downlink user plane data matches the pre-configured policy.
The SGW according to any one of claims 1 to 3, wherein the first information comprises at least one of: indication information indicating that the UE is paging by the SGW, or the UE Registration information.
The SGW according to claim 4, characterized in that

The sending module is specifically configured to: when the first information includes the indication information indicating that the SGW is paging the UE, according to the stored country of the UE The mobile subscriber identity IMSI generates the paging message and sends the paging message to the eNodeB.
The SGW according to claim 4, characterized in that

The sending module is configured to: when the first information includes the registration information of the UE, generate the paging message according to the registration information of the UE, and send the paging message to the eNodeB.
The SGW according to claim 5 or 6, wherein

The sending module is specifically configured to encapsulate the paging message according to the S1 application protocol S1-AP, and send the encapsulated paging message to the GTP-U data packet of the general packet radio service tunneling protocol user plane to The eNodeB; or,

The sending module is specifically configured to send the paging message to the eNodeB in a general packet radio service tunneling protocol control plane GTP-C message; or

The sending module is specifically configured to encapsulate the paging message according to the S1-AP, and send the encapsulated paging message to the eNodeB in a flow control transmission protocol SCTP data packet.
The SGW according to any one of claims 1 to 7, characterized in that

The processing module is further configured to start a timer after the sending module sends a paging message to the evolved base station eNodeB;

The sending module is further configured to: when the processing module determines that the bearer modification request of the UE that is sent by the MME is not received before the timer stops, resending the paging message to the eNodeB;

The processing module is further configured to restart the timer, and stop the timer after receiving the bearer modification request of the UE.
The SGW according to any one of claims 1-8, characterized in that

The sending module is further configured to send a paging notification message to the MME, where the paging notification message is used to notify the MME to page the UE by the SGW.
The SGW according to claim 4, wherein the registration information of the UE includes a combination of any one or more of the following: a temporary identifier of the UE, a tracking area list of the UE, and an eNodeB of the UE. Address list, paging of the UE a period, a closed subscriber group CSG identity list of the UE, an eNodeB address where the UE last camped, an eNodeB identity of the UE that last camped, a tracking area where the UE last resided, and the UE nearest A cell ID that resides once.
SGW according to claims 1-10, characterized in that

The processing module is further configured to: before the sending module sends the paging message to the evolved base station eNodeB according to the first information, determine, according to the downlink user plane information that the eNodeB allocates to the UE, that the UE is in an idle state. .
A mobility management entity MME, comprising: a processing module and a sending module;

The processing module is configured to acquire first information of the user equipment UE, where the first information is used by the serving gateway SGW to page the UE;

The sending module is configured to send the first information of the UE that is obtained by the processing module to the SGW, where the first information is used by the SGW to page the UE.
The MME according to claim 12, characterized in that

The processing module is further configured to: before acquiring the first information of the UE, determine that the UE is a UE that needs to be paged by the SGW.
The MME according to claim 13, wherein

The processing module is configured to determine, according to the locally configured International Mobile Subscriber Identity (IMSI) list, that the UE is a UE that needs to be the SGW to be paged; and the IMSI list includes an IMSI of the UE that needs to be the SGW.
The MME according to claim 13, wherein the MME further comprises: a receiving module;

The receiving module is configured to receive the priority information of the UE sent by the home network server HSS or the UE, where the processing module is specifically configured to determine, according to the priority information of the UE received by the receiving module The UE is a UE that needs to be paged by the SGW; or

The receiving module is configured to receive paging indication information of the UE sent by the HSS, where the processing module is specifically configured to: according to the paging of the UE received by the receiving module The indication information determines that the UE is a UE that needs the SGW paging; the paging indication information is used to indicate whether the UE is paged by the SGW.
The MME according to any one of claims 12-15, wherein the first information comprises at least one of: indication information indicating that the UE is paging by the SGW, or the UE Registration information.
The MME according to claim 16, wherein

The registration information of the UE includes a combination of any one or more of the following: a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, and the The closed subscriber group CSG identity list of the UE, the eNodeB address where the UE last camped, the identity of the eNodeB where the UE last camped, the tracking area where the UE last camped, the last time the UE resides Cell identity.
A paging method, comprising:

Receiving first information of the user equipment UE sent by the mobility management entity MME;

Receiving downlink data of the UE sent by the packet data network gateway PGW;

And when the UE is in an idle state, sending a paging message to the evolved base station eNodeB according to the first information.
The method according to claim 18, wherein the downlink data is downlink signaling or downlink user plane data; before the sending the paging message to the evolved base station eNodeB according to the first information, the method further includes:

Determining that the attribute of the downlink data satisfies a predetermined condition.
The method of claim 19 wherein:

When the downlink data is the downlink signaling, the attribute of the downlink data meets a predetermined condition, where the following conditions are included: the allocation and retention priority ARP value of the bearer to which the downlink signaling belongs is less than a preset threshold, The ARP value of the default bearer associated with the downlink signaling is less than a preset threshold; or

When the downlink data is the downlink user plane data, the attribute of the downlink data that meets the predetermined condition includes: the ARP value of the bearer to which the downlink user plane data belongs is less than a preset threshold; or

When the downlink data is the downlink user plane data, the attribute of the downlink data satisfies the predetermined condition that the service type indication or the differential service code point DSCP included in the downlink user plane data matches the pre-configured policy.
The method according to any one of claims 18 to 20, wherein the first information comprises at least one of: indication information indicating that the UE is paging by the SGW, or the UE Registration information.
The method according to claim 21, wherein when the first information includes the indication information indicating that the SGW is paging the UE, the first information is evolved according to the first information. The base station eNodeB sends a paging message, including:

Generating the paging message according to the stored International Mobile Subscriber Identity (IMSI) of the UE, and transmitting the paging message to the eNodeB.
The method of claim 21, wherein when the first information includes the registration information of the UE, the sending the paging message to the evolved base station eNodeB according to the first information comprises:

Generating the paging message according to the registration information of the UE, and sending the paging message to the eNodeB.
The method according to claim 22 or 23, wherein the sending the paging message to the eNodeB comprises:

Encapsulating the paging message according to the S1 application protocol S1-AP, and sending the encapsulated paging message to the eNodeB in a general packet radio service tunneling protocol user plane GTP-U data packet; or

Transmitting the paging message to the eNodeB in a General Packet Radio Service Tunneling Protocol Control Plane GTP-C message; or

The paging message is encapsulated according to the S1-AP, and the encapsulated paging message is included in the flow control transport protocol SCTP data packet and sent to the eNodeB.
The method according to any one of claims 18 to 24, further comprising: after the sending the paging message to the evolved base station eNodeB according to the first information,

The SGW starts a timer;

When the SGW determines that the bearer modification request of the UE sent by the MME is not received before the timer stops, resending the paging message to the eNodeB, and restarting the timer until receiving After the bearer modification request of the UE, the timer is stopped.
The method according to any one of claims 18 to 25, wherein the method further comprises:

Sending a paging notification message to the MME; the paging notification message is used to notify the MME to page the UE by the SGW.
The method of claim 26, wherein

The registration information of the UE includes a combination of any one or more of the following: a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, and the a closed subscriber group CSG identity list of the UE, an eNodeB address where the UE last camped, an eNodeB identity where the UE last camped, a tracking area where the UE last resided, and a last time the UE resides Cell identification.
The method according to any one of claims 18 to 27, further comprising: before the sending the paging message to the evolved base station eNodeB according to the first information,

Determining that the UE is in an idle state according to downlink user plane information allocated by the eNodeB to the UE.
A paging method, comprising:

Obtaining first information of the user equipment UE; the first information is used by the serving gateway SGW to page the UE;

Sending the first information of the UE to the SGW.
The method according to claim 29, further comprising: before the acquiring the first information of the user equipment UE,

Determining that the UE is a UE that requires the SGW to page.
The method according to claim 30, wherein the determining that the UE is a UE that requires the SGW to page comprises:

Determining, by the locally configured International Mobile Subscriber Identity (IMSI) list, that the UE is a UE that needs the SGW paging; the IMSI list includes an IMSI of a UE that needs the SGW paging; or

Receiving the priority information of the UE sent by the home network server HSS or the UE, and determining, according to the priority information of the UE, that the UE is a UE that needs to be paged by the SGW; or

Receiving the paging indication information of the UE that is sent by the HSS, and determining, according to the paging indication information of the UE, that the UE is a UE that needs the SGW to be paged; the paging indication information is used to indicate whether the UE is Paging is performed by the SGW.
The method according to any one of claims 29-31, wherein the first information comprises at least one of: indication information indicating that the UE is paging by the SGW; or the UE Registration information.
The method of claim 32, wherein

The registration information of the UE includes a combination of any one or more of the following: a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, and the The closed subscriber group CSG identity list of the UE, the eNodeB address where the UE last camped, the identity of the eNodeB where the UE last camped, the tracking area where the UE last camped, the last time the UE resides Cell identity.
A service gateway SGW, comprising: a receiver and a transmitter;

The receiver is configured to receive first information of the user equipment UE that is sent by the mobility management entity MME, and receive downlink data of the UE that is sent by the packet data network gateway (PGW);

The transmitter is configured to send a paging message to the evolved base station eNodeB according to the first information received by the receiver when the UE is in an idle state.
The SGW according to claim 34, wherein the downlink data is downlink signaling or downlink user plane data; the SGW further includes: a processor;

The processor is configured to determine, before the transmitter sends a paging message to the evolved base station eNodeB according to the first information, that an attribute of the downlink data received by the receiver meets a predetermined condition.
The SGW according to claim 35, wherein when the downlink data is the downlink signaling, the attribute of the downlink data satisfies a predetermined condition, including any one of the following: an allocation of a bearer to which the downlink signaling belongs And the ARP value of the default bearer associated with the downlink signaling is less than a preset threshold; or

When the downlink data is the downlink user plane data, the attribute of the downlink data that meets the predetermined condition includes: the ARP value of the bearer to which the downlink user plane data belongs is less than a preset threshold; or

When the downlink data is the downlink user plane data, the attribute of the downlink data satisfies the predetermined condition that the service type indication or the differential service code point DSCP included in the downlink user plane data matches the pre-configured policy.
The SGW according to any one of claims 34 to 36, wherein the first information comprises at least one of: indication information indicating that the UE is paging by the SGW, or the UE Registration information.
The SGW of claim 37, wherein

The transmitter is specifically configured to: when the first information includes the indication information indicating that the SGW is paging the UE, generating, according to the stored International Mobile Subscriber Identity (IMSI) of the UE Paging the message and transmitting the paging message to the eNodeB.
The SGW of claim 37, wherein

The transmitter is configured to: when the first information includes the registration information of the UE, generate the paging message according to the registration information of the UE, and send the paging message to the eNodeB.
The SGW according to claim 38 or 39, characterized in that

The transmitter is specifically configured to encapsulate the paging message according to the S1 application protocol S1-AP, and include the encapsulated paging message in a general packet radio service tunneling protocol user plane GTP-U data packet to be sent to The eNodeB; or,

The transmitter is specifically configured to send the paging message to the eNodeB in a general packet radio service tunneling protocol control plane GTP-C message; or

The transmitter is specifically configured to encapsulate the paging message according to the S1-AP, and send the encapsulated paging message to the eNodeB in a flow control transmission protocol SCTP data packet.
The SGW according to any one of claims 34 to 40, characterized in that

The processor is further configured to start a timer after the transmitter sends a paging message to the evolved base station eNodeB according to the first information;

The transmitter is further configured to: when the processor determines that the bearer modification request of the UE that is sent by the MME is not received before the timer stops, resending the paging message to the eNodeB;

The processor is further configured to restart the timer until the UE determines that the bearer modification request of the UE is received, and stops the timer.
The SGW according to any one of claims 34 to 41, characterized in that

The transmitter is further configured to send a paging notification message to the MME, where the paging notification message is used to notify the MME to page the UE by the SGW.
The SGW of claim 37, wherein

The registration information of the UE includes a combination of any one or more of the following: a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, and the a closed subscriber group CSG identity list of the UE, an eNodeB address where the UE last camped, an eNodeB identity where the UE last camped, a tracking area where the UE last resided, and a last time the UE resides Cell identification.
The SGW according to any one of claims 34-43, characterized in that

The processor is further configured to: before the sending, by the sender, the paging message to the evolved base station eNodeB according to the first information, determine, according to the downlink user plane information allocated by the eNodeB to the UE, that the UE is in an idle state. .
A mobility management entity MME, comprising: a processor and a transmitter;

The processor is configured to acquire first information of the user equipment UE, where the first information is used by the serving gateway SGW to page the UE;

The transmitter is configured to send the first information of the UE acquired by the processor to the SGW.
The MME according to claim 45, characterized in that

The processor is further configured to: before acquiring the first information of the UE, determine that the UE is a UE that needs to be paging by the SGW.
The MME according to claim 46, wherein

The processor is configured to determine, according to the locally configured International Mobile Subscriber Identity (IMSI) list, that the UE is a UE that needs to be the SGW to be paged; and the IMSI list includes an IMSI of the UE that needs to be the SGW.
The MME according to claim 46, wherein the MME further comprises: a receiver;

The receiver is configured to receive the priority information of the UE sent by the home network server HSS or the UE, where the processor is specifically configured to determine, according to the priority information of the UE received by the receiver The UE is a UE that needs to be paged by the SGW;

or,

The receiver is configured to receive the paging indication information of the UE that is sent by the HSS, where the processor is configured to determine, according to the paging indication information of the UE that is received by the receiver, that the UE is in need The UE that is paged by the SGW; the paging indication information is used to indicate whether the UE is paging by the SGW.
The MME according to any one of claims 45 to 48, wherein the first information comprises at least one of: indication information indicating that the UE is paging by the SGW, or the UE Registration information.
The MME according to claim 49, characterized in that

The registration information of the UE includes a combination of any one or more of the following: a temporary identifier of the UE, a tracking area list of the UE, an eNodeB address list of the UE, a paging period of the UE, and the The closed subscriber group CSG identity list of the UE, the eNodeB address where the UE last camped, the identity of the eNodeB where the UE last camped, the tracking area where the UE last camped, the last time the UE resides Cell identity.
A paging system, comprising:

The serving gateway SGW according to any one of claims 1 to 11 and 34 to 44, the mobility management entity MME, the packet data network gateway PGW, and the evolution according to any one of claims 12-17 and 45-50 a type base station eNodeB and a user equipment UE;

The PGW is configured to send downlink data of the UE to the SGW.

The eNodeB is configured to receive a paging message sent by the SGW, and page the UE according to the paging message.