WO2011097989A1

WO2011097989A1 - Optimization method for local access paging and apparatus thereof

Info

Publication number: WO2011097989A1
Application number: PCT/CN2011/070656
Authority: WO
Inventors: 王静; 周娜; 梁爽
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-02-11
Filing date: 2011-01-26
Publication date: 2011-08-18
Also published as: CN102158961A

Abstract

The present invention discloses an optimization method for local access paging. The method includes: when a mobility management unit knows the arrival of downlink data, the source of the downlink data is judged; and when the downlink data is local access data, paging in the local access zone is performed. The present invention also discloses an optimization apparatus for local access paging. The apparatus includes a notification reception unit, a judgment unit and a paging control unit. Using the method and apparatus in the present invention, a core network can determine base stations in the serving zone of a local gateway, and thus when the local access downlink data of a user arrives, paging the user in the zone supporting the local access of the user is enabled and the resource of the air interface is saved.

Description

Local access paging optimization method and device

TECHNICAL FIELD The present invention relates to the field of mobile communications, and in particular, to a local access paging optimization method and apparatus.

Background technique

In order to maintain the competitiveness of the third generation mobile communication system in the field of communication, users are provided with faster speed, lower latency, and more personalized mobile communication services. At the same time, the operating standards of the operators are reduced. Research on Evolved Packet System (EPS). FIG. 1 shows a schematic structural diagram of an evolved packet domain system. As shown in FIG. 1, the entire EPS system is divided into two parts: a radio access network and a core network. In the core network, a Home Subscriber Server (HSS), a Mobility Management Entity (MME), a Serving GPRS Support Node (SGSN), and a policy are included. Policy and Charging Rule Function (PCRF), Serving Gateway (S-GW), Packet Data Gateway (PDN Gateway, P-GW for short), and Packet Data Network (Packet Data Network) , referred to as PDN). The functions of each part are described in detail below: The home subscriber server is the permanent storage location of the subscriber subscription data, and is located in the home network to which the subscriber subscribes. The mobility management entity is the location where the user subscription data is stored in the current network, responsible for terminal-to-network non-access layer signaling management, terminal security verification function, terminal mobility management, user idle mode tracking and paging. Management functions and bearer management.

The service GPRS support node is a Global System for Mobile Communications (GSM) Enhanced Data Rate for GSM Evolution (EDGE) wireless access network (GSM EDGE Radio Access Network, referred to as GSM). For GERAN) and Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UMTS) The Terrestrial Radio Access Network (UTRAN) is a service support point for users to access the core network. It is functionally similar to the mobility management entity and is responsible for user location update, paging management, and bearer management.

The service gateway is a gateway of the core network to the wireless system, and is responsible for the user plane bearer of the terminal to the core network, the data buffer in the terminal idle mode, the function of initiating the service request by the network side, the lawful interception and the packet data routing and forwarding function; It is responsible for counting the situation in which the user terminal uses the wireless network, and generates the CDR of the terminal using the wireless network, and transmits it to the charging gateway. The packet data gateway is a gateway of the evolved system and the external packet data network of the system. It is connected to the Internet and the packet data network, and is responsible for the Internet Protocol (IP) address allocation, charging function, and packet filtering of the terminal. And functions such as policy control. The packet data network is the operator's IP service network, which provides IP services to users through the carrier's core network. The policy charging rule function entity is a server in the evolution system responsible for providing charging control, online credit control, threshold control, and quality of service (QoS) policy rules. The radio access network is composed of an Evolved NodeB (eNB) and a 3G Radio Network Controllor (RNC). It is mainly responsible for receiving and receiving wireless signals, and is connected through the air interface and the terminal. Radio resources, resource scheduling, and access control for the air interface. The above-mentioned service GPRS support node is an upgraded SGSN, which can support the S4 interface with the service gateway, and communicates with the mobility management unit by using GPRS Tunneling Protocol version 2 (GTPv2 for short). . For the SGSN supporting the 3G core network, the Packet Switching (PS) domain network architecture is different from that of FIG. 1. At this time, the SGSN and the MME are connected by the Gn interface, and the GPRS Tunneling Protocol version 1 (hereinafter referred to as GTPvl) is used for interworking. The SGSN cannot be connected to the serving gateway. The Gn interface is connected to the Gateway GPRS Support Node (GGSN) to directly access the packet data network. Home NodeB (HNB for short) or evolved home base station (Home) The eNodeB (HeNB for short) is a type of small, low-power base station. It is used as a dedicated resource for some users and deployed in private places such as homes, groups, companies, or schools, mainly to provide users with higher service rates. Reduce the cost of using high-rate services while bridging the gaps in existing distributed cellular wireless communication systems. The advantages of home base stations are affordability, convenience, low power output, plug and play, broadband access, and the use of single mode terminals. The home base station can be directly connected to the core network, or can be accessed by the logical network element of the home base station gateway, as shown in FIG. 2a. The main functions of the home base station gateway are: verifying the security of the home base station, and processing the home base station. Registration, operation and maintenance management of the home base station, configuration and control of the home base station according to the operator's requirements, and exchange of data between the core network and the home base station.

Or selective IP traffic offload (SIPTO), that is, the terminal adds local gateways to other IP devices in the home network, IP devices in the enterprise network, or the Internet access, as shown in Figure 2a. 2c is shown. The addition of the local access gateway can provide strong support for the local access technology. The local gateway can be combined with the wireless side network element or near the wireless side network element (ie, external), or can be set up with the home base station gateway or at home. Near the base station gateway (ie external). The local gateway includes a local SGW (Local SGW, referred to as L-SGW), a local PGW (Local PGW, referred to as L-PGW), a local GGSN (Local GGSN, referred to as L-GGSN), and an external local GW (Local GW). , referred to as L-GW) and so on. Figure 3 shows the data flow path for local access and traditional core network access in a mobile communication network architecture. For users who support local access, traditional core network access data paths and local access data paths can be established at the same time. As shown in FIG. 3, for a locally accessed connection, the local access data path is from the terminal to the wireless side network element to the local access gateway (eg, L-SGW, L-PGW, and L-GGSN), and the data transmission does not pass through the core. network. In order to achieve local access of the terminal to other IP devices or the Internet of the home network, two connections can be established, and the first local access data path directly accesses the Internet (Internet IP connection, ie SIPTO connection). The second local access data path directly accesses other IP devices on the home network (home network IP connection, ie LIPA connection). In an actual deployment, such as an enterprise scenario, in order to reduce the complexity and mobility requirements of the base station, the local gateway is usually deployed separately to provide support for enterprise users to use local access functions. After the user moves out of the enterprise, taking into account the characteristics of local access data security and privacy, Ben The local access function will be deactivated. In view of this requirement, the local access data may only be generated and transmitted within the enterprise. When the local gateway receives the downlink data of the user, the paging range triggered by the core network may be limited to be implemented in a certain area. Compared with the prior art, the paging method can effectively reduce the waste of the air interface resources of the base station, and is energy-saving and efficient. However, the current paging range is determined to be rough, and paging cannot be guaranteed within the coverage of the base station under the local access gateway. The local paging optimization function cannot be guaranteed, resulting in poor paging performance.

SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to provide a paging optimization method and apparatus for use in a local access function (including local IP access and selective IP transmission offload), which can determine the range of paging more finely. Paging is only done in areas that support local access. To solve the above technical problem, the present invention provides a local access paging optimization method, the method includes: when the mobility management unit learns that downlink data arrives, determining the source of the downlink data, when the downlink data is local access data At the time, paging in the local access area is performed. In the step of determining the source of the downlink data, the mobility management unit determines the source of the downlink data according to the gateway information of the downlink data or the packet data network (PDN) connection information. The gateway information or the PDN connection information of the downlink data is sent by the service gateway.

(S-GW) or local gateway (L-GW) is reported to the mobility management unit.

The step of performing the paging in the local access area includes: the mobility management unit queries the query server according to the gateway information or the gateway information obtained from the PDN connection mapping, and obtains the identification information of the base station in the local access area, And determining a paging range according to the queried content, and indicating that the base station in the paging range performs local access paging.

The mobility management unit instructs the base station in the paging range to perform local access search. The step of calling includes: the mobility management unit selects a direct connection base station to initiate paging from the determined paging range; or the mobility management unit sends paging range information to a gateway of the non-directly connected base station, Determining, by the gateway, a base station to initiate paging from the paging range; or the mobility management unit selects, from the determined paging range, a direct connection base station that meets a predetermined condition to initiate paging, where the predetermined condition is as follows One or more of the parameters determining: closed subscriber group (CSG) subscription information and/or tracking area identification list information, determined to meet predetermined conditions when matched with the predetermined condition parameter; or the mobility management unit will seek The call range information is sent to the gateway of the non-directly connected base station, and the gateway selects a base station that meets the predetermined condition from the paging range to initiate paging, and the predetermined condition is determined by one or more of the following parameters: CSG The subscription information and/or the tracking area identification list information is determined to meet the predetermined condition when matched with the predetermined condition parameter.

The step of performing paging in the local access area includes: the mobility management unit transmitting the obtained gateway information or gateway information obtained from the PDN connection mapping to a base station in a predetermined paging range of the core network, where the base station according to the base station The local gateway configuration information determines whether the user is paged; or the mobility management unit sends the gateway information and the predetermined paging range information of the core network to the base station gateway in the predetermined paging range of the core network, where The base station gateway selects a base station, and sends the gateway information to the selected base station, and the selected base station determines whether to page the user according to the local gateway information and its local gateway configuration information. The mobility management unit is a mobility management entity (MME) or a serving general packet radio service support node (SGSN). In order to solve the above technical problem, the present invention further provides a local access paging optimization apparatus, including: a notification receiving unit, a determining unit, and a paging control unit, wherein: the notification receiving unit is configured to: receive downlink data arrival The determining unit is configured to: gateway information or packet data network according to downlink data arrival (PDN) connection information determines whether the downlink data is local access data; the paging control unit is configured to: when the determining unit determines that the downlink data is local access data, control the base station or the gateway to perform paging in the local access area . The device further includes a query unit and a paging range determining unit, where: the query unit is configured to: when the determining unit determines that the downlink data is local access data, query the query server to learn the local access area. The paging range determining unit is configured to: determine a paging range according to the content queried by the query unit; the paging control unit is configured to control the base station or the gateway to perform local access in the following manner Paging: Controls the base station or gateway within the paging range for local access paging. The paging control unit is further configured to: send the gateway information that the downlink data arrives or the gateway information obtained according to the PDN connection mapping to the base station in the predetermined paging range of the core network, and instruct the base station to determine according to the local gateway configuration information of the local network. Whether to page the user; or send the gateway information and the paging range information scheduled by the core network to the base station gateway in the predetermined paging range of the core network, and instruct the base station gateway to select the base station to perform the local access area. call. The device is located in a mobility management entity (MME) or a serving general packet radio service support node (SGSN). Using the method and apparatus of the present invention, the core network can determine the base station in the local gateway service area, so that when the user's local access downlink data arrives, the user can be paged in an area that supports the user's local access. Can save resources on the air interface.

The accompanying drawings are intended to provide a In the drawings: FIG. 1 is a schematic structural diagram of an evolved packet domain system; 2a-2c are schematic diagrams showing access to a core network by a wireless side network element in different manners; FIG. 3 is a schematic diagram of a data flow path for local access and traditional core network access; FIG. 4 is a flow chart of an implementation method for local access paging optimization of an LTE system. FIG. 5 is a flowchart of Embodiment 2 of a local access paging optimization method in an LTE system; FIG. 6 is a flowchart of Embodiment 3 of a local access paging optimization method in an LTE system; FIG. 7 is a fourth implementation manner of a local access paging optimization method in an LTE system. flow chart.

BEST MODE FOR CARRYING OUT THE INVENTION The inventive concept of the present invention is: When the mobility management unit learns that downlink data arrives, it determines the source of the downlink data, and when the downlink data is local access data, performs local search. call.

The local access area refers to an area covered by a base station under a local access gateway, or an area that supports local access. Specifically, the mobility management unit may determine the source of the downlink data according to the information of the gateway or the PDN connection information that the downlink data arrives. If the gateway is determined to be the local gateway according to the gateway information, the downlink data is considered to be the local access data. Paging in the local access area; if the downlink data is determined to be local access data according to the PDN connection information, paging in the local access area is performed. The information of the gateway to which the downlink data arrives or the PDN connection information is sent by the serving gateway (SGW) or the local gateway (LGW) to the mobility management unit. The paging in the local access area is performed by the mobility management unit to query the query server according to the gateway information or the gateway information corresponding to the PDN connection, and obtain the identification information of the base station in the local access area, and according to the query The content determines the paging range, indicating that the base station in the paging range performs local access paging; or directly sends the local gateway information to the base station within the predetermined paging range of the core network, and the base station determines whether it is correct according to its local gateway configuration information. The user performs paging to achieve the purpose of paging optimization. The mobility management unit is a mobility management entity (MME) or a serving GPRS support node (SGSN). The user's data, ie LIPA connection data, or data sent from the Internet to users in the local access area, ie SIPTO connection data. The local gateway described herein refers to a gateway that provides local access services for users, and may be any of the following gateways: L-SGW, L-PGW, L-GGSN, and L-GW. The foregoing local gateway information may use one or more of the following information: the ID of the gateway, the address of the gateway, and the domain name of the gateway.

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings and specific embodiments to enable those skilled in the art to understand the invention. . It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other. In the following four embodiments, the MME is used as the mobility management unit as an example. The flow of the SGSN as the mobility management unit is similar to that of the MME, and is not described herein again. In addition, since the present invention is a local access paging optimization method, in the following four embodiments, the received downlink data is described by taking local access downlink data as an example. 4 is a flowchart of Embodiment 1 for local access paging optimization in an LTE system. In this embodiment, the MME obtains information about a base station in a local access area by querying, and determines a paging range according to the information, thereby ensuring local access. Paging within the area. The method includes the following steps: Step 401: The gateway (L-GW) receives the local access (LIPA/SIPTO) downlink data of a UE. In this embodiment, the gateway is a local gateway. The local gateway may have only some functions of the P-GW, and may also have some functions of the P-GW and the S-GW. Step 402: If the local access function is implemented by using the S5 interface architecture, the L-GW directly sends the downlink data of the user, or the L-GW reports the PDN connection information corresponding to the downlink data to the S-GW. Step 403: The S-GW obtains the gateway information or the PDN connection information of the downlink data source, and sends the gateway information or the PDN connection information to the MME by using a downlink data notification message, and performs step 405; the gateway information of the downlink data source is Refers to the information of the local gateway from which the downlink data is derived. In this embodiment, it is information of the L-GW, such as an L-GW ID. The PDN connection information of the downlink data source refers to tunnel identification information or bearer identification information corresponding to the downlink data. Step 404: If the local access function is implemented by using the S11 interface architecture, the L-GW directly informs the MME that the downlink data of the user arrives through the downlink data notification message, and the message carries the gateway information or the PDN connection information of the downlink data source, and the steps are performed. 405; Specifically, the gateway information may use one or more of the following information: an ID of the gateway, an address of the gateway, and a domain name of the gateway. Specifically, the PDN connection information is tunnel identification information or bearer identification information corresponding to the downlink data. Step 405: The MME determines the data source according to the received gateway information or the PDN connection information. If the MME determines that the downlink data is the local access data, the MME continues to perform step 406. If the MME determines that the downlink data is not the local access data, the MME specifies the current network. Specifically, the MME may determine, according to the gateway information, whether the gateway is a local gateway, and if yes, the downlink data is local access data, and if the gateway is not a local gateway, the downlink data is a core network. Access data. The MME can directly determine whether the downlink data is local access data according to the PDN connection information. Step 406: The MME sends the local gateway information or the gateway information obtained according to the PDN connection mapping to the query server by using a query message, and requests to query the identifier information of the base station in the local access area, that is, requesting to query the identifier information of the base station of the local gateway. ;

The MME may obtain the gateway information according to the PDN connection information mapping, and request the query server to perform the query. The query server may be a Domain Name System (DNS) or other newly defined server, where the identifier information of the base station in the local access area is saved, and the identifier information includes one or more of the following information: ID, base station address or closed user group identifier (CSG ID, where CSG is the abbreviation of Closed Subscriber Grou). Step 407: The query server uses the local gateway information as a retrieval item, and finds the identification information of the base station in the local access area as the query result and returns the result to the MME. Step 408: The MME determines the paging range according to the result of the query, and selects the direct connection mode base station to trigger. Paging process, or selecting a direct connection mode base station that meets a predetermined condition to trigger a paging process;

The MME determines the paging range according to the identity information of the base station in the local access area, for example: searching for all the base station identifiers configured by the MME, and finding a base station that matches the query result to send a paging message. Preferably, after obtaining the local access paging range, one or several base stations meeting the predetermined condition may be determined from the determined group of base stations, and the predetermined condition may be determined by one or more of the following parameters: the CSG subscription of the user. The information and/or the Tracking Area Identity List (TAI list) is considered to meet the predetermined condition when it matches the predetermined condition parameter. For example: According to the CSG subscription of the user, the registration range of the user may be limited. In the result, the comparison of the CSG IDs corresponding to the base stations can remove areas that the user cannot camp, and further narrow the paging range. In addition, the tracking area identifier list is the range of the user estimated by the core network, and the above conditions are filtered by the base station in the coverage area, so that more accurate results can be obtained. The paging optimization judgment conditions in this step can be combined and selected, and the limitation of the judgment order is not made. In this embodiment, the base station is searched for as an example. In other embodiments, the non-directly connected base station can also be used for paging. See the second embodiment. The choice of the two implementations depends on the topology of the network. If the existing MME has the step of determining the paging range when paging, the step 408 may be used to replace the existing step of determining the paging range, or based on the paging range determined by the existing MME, Step 408 further narrows the paging range. Step 409: The base station initiates paging for the UE. 5 is a flowchart of Embodiment 2 of a local access paging optimization method in an LTE system. In this embodiment, the MME obtains information about a base station in a local access area by querying, and sends a paging range determined according to the information to the home base station. The gateway, the home base station gateway selects a suitable base station to perform paging in the local access area. Specifically, the method includes the following steps: Step 501: A local gateway (L-GW) receives local access (LIPA/SIPTO) downlink data of a UE; the local gateway may only have some functions of the P-GW, and may also have a P-GW and Some features of the S-GW. Step 502: If the local access function is implemented by using the S5 interface architecture, the L-GW directly sends the downlink data of the user, or the L-GW reports the PDN connection information corresponding to the downlink data to the S-GW; Step 503, S- The GW obtains the gateway information or the PDN connection information of the downlink data source, and sends the gateway information or the PDN connection information to the MME by using the downlink data notification message, and performs step 505; Step 504: If the S11 interface architecture is used to implement the local access function, Then, the L-GW directly informs the MME that the downlink data of the user currently arrives through the downlink data notification message. The message carries the gateway information of the downlink data source or the PDN connection information, and step 505 is performed. Step 505: The MME determines the data source according to the received gateway information or the PDN connection information. If the downlink data is local access data, proceed to step 506. If the downlink data is not the local access data, the method is performed according to the existing process. Step 506: The MME sends the local gateway information or the gateway information obtained according to the PDN connection mapping to the query server by using a query message, and requests to query the local access area. The identification information of the base station is as follows: Step 507: The query server uses the local gateway information as the retrieval item, and finds the identification information of the base station in the local access area as the query result and returns the result to the MME. Step 508: The MME determines the paging range according to the result of the query; The process of the specific determination is described in step 408. Step 509: For the base station in the indirect mode, the MME sends the determined paging range information to the home base station gateway HeNBGW through the paging message; the determined paging range information refers to the determined identification information of the base station that performs paging. Step 510: The home base station gateway selects a base station to trigger a paging process according to the paging range information, or selects a base station that meets a predetermined condition from the paging range to trigger a paging process. If the MME is directly connected to the base station, because the configuration information of the base station is on the MME. Therefore, the MME can find the base station according to the paging range information, thereby directly starting paging. However, if the base station is connected to the MME through the gateway, that is, the base station that is not directly connected, the MME can only find the gateway to which the base station in the paging range belongs, and then the gateway finds the specific base station to trigger the paging process, because the base station The configuration information is on the gateway. Step 511: The base station initiates paging for the UE.

6 is a flowchart of Embodiment 3 of a local access paging optimization method in an LTE system. In this embodiment, the MME uses a predetermined paging range of the existing core network, and instructs the base station to initiate paging, and the base station determines whether to perform searching. Specifically, the following steps are included:

Step 601: The local gateway (L-GW) receives local access (LIPA/SIPTO) downlink data of a UE; the local gateway may only have some functions of the P-GW, or may have portions of the P-GW and the S-GW at the same time. Features. Step 602: If the local access function is implemented by using the S5 interface architecture, the L-GW directly sends the downlink data of the user, or the L-GW reports the PDN connection information corresponding to the downlink data to the S-GW; Step 603, S- The GW obtains the gateway information or the PDN connection information of the downlink data source, and sends the gateway information or the PDN connection information to the MME through the downlink data notification message, and performs step 605; Step 604: If the local access function is implemented by using the S11 interface architecture, the L-GW directly informs the MME that the downlink data of the user arrives through the downlink data notification message, and the message carries the gateway information or the PDN connection information of the downlink data source, and the steps are performed. 605; Step 605, the MME determines the data source according to the received gateway information or the PDN connection information. If the downlink data is the local access data, the process proceeds to step 606. If the downlink data is not the local access data, the MME performs the current process. Step 606: The MME sends the paging message that carries the local gateway information or the gateway information obtained by the PDN connection mapping to the directly connected base station in the predetermined paging range. In this embodiment, the paging range is the core network reservation. The generation of the paging range can be implemented according to the prior art. Step 607: The base station determines, according to the local gateway information configured by itself, whether to initiate paging for the UE. If the received local gateway information matches the local gateway information configured by itself, the base station is a base station in the local access area, and the base station initiates Paging, otherwise not sent. Step 608: The base station initiates paging to a user.

7 is a flowchart of Embodiment 4 of an LTE system local access paging optimization method. In this embodiment, the MME uses a predetermined paging range of the existing core network, and instructs the base station to initiate paging, and the base station determines whether to perform searching. The home base station in this embodiment is a home base station that is not directly connected to the MME, and specifically includes the following steps: Step 701: The local gateway (L-GW) receives local access (LIPA/SIPTO) downlink data of a UE; The gateway may only have some functions of the P-GW, and may also have some functions of the P-GW and the S-GW.

Step 702: If the S5 interface architecture is used to implement the local access function, the L-GW directly sends the downlink data of the user, or the L-GW reports the PDN connection information corresponding to the downlink data to the S-GW. Step 703: The S-GW obtains the gateway information or the PDN connection information of the downlink data source, and sends the gateway information or the PDN connection information to the MME by using a downlink data notification message, and performs step 705. Step 704: If the S11 interface architecture is used If the local access function is implemented, the L-GW directly informs the MME that the downlink data of the user arrives through the downlink data notification message, and the message carries the gateway information of the downlink data source or the PDN connection information, and performs step 705; Step 705, the MME receives the The gateway information or the PDN connection information determines the data source. If the downlink data is local access data, proceed to step 606. If the downlink data is not local access data, perform according to the existing process. In this embodiment, the paging range is Pre-specified, the generation of the paging range is based on the prior art. Step 706: The MME sends a paging message carrying the paging range information and the local gateway information (for example, the ID of the L-GW) to the home base station gateway HeNBGW connected to the indirectly connected base station in the predetermined paging range, and triggers a paging process for the UE; Step 707: The HeNB GW selects a base station to perform paging from the base stations connected thereto according to the paging range information. Step 708: The HeNB GW sends a paging message to the selected home base station, where the message carries Local gateway information; Step 709: The home base station determines whether to initiate paging to the UE according to the local gateway information (such as the L-GW ID) configured by itself; if the received local gateway information matches the local gateway information configured by itself, The base station is a base station in the local access area, and the base station initiates paging, and vice versa. Step 710: The base station initiates paging to a user. The content of the present invention is also applicable to the local access paging optimization of the HNB in the UMTS system, and the implementation manner is similar, and is not mentioned here.

The mobility management unit that implements local access paging optimization includes: a notification receiving unit, a determining unit, and a paging control unit, where: The notification receiving unit is configured to: receive a notification that the downlink data arrives; the determining unit is configured to: determine, according to the gateway information or the PDN connection information that the downlink data arrives, whether the downlink data is local access data; the paging control unit is configured to : Controls the base station or gateway to perform paging in the local access area. Preferably, the device further includes a query unit and a paging range determining unit, where: the query unit is configured to: when the determining unit determines that the downlink data is local access data, query the query server to learn the local access area. The identification information of the internal base station; the paging range determining unit is configured to: determine the paging range according to the content queried by the query unit; the paging control unit is configured to: control the base station or the gateway in the paging range Make local access pages.

Preferably, the paging control unit is further configured to: send the gateway information that the downlink data arrives or the gateway information obtained according to the PDN connection mapping to the base station in the predetermined paging range of the core network, and instruct the base station to configure information according to its local gateway. Determining whether to page the user; or transmitting the gateway information and the paging range information scheduled by the core network to the base station gateway in the predetermined paging range of the core network, instructing the base station gateway to select the base station to perform local access in the area Paging.

It should be noted that, if not conflicting, the embodiments of the present invention and the various features of the embodiments may be combined with each other, and are all within the protection scope of the present invention. Additionally, the steps illustrated in the flowchart of the figures may be performed in a computer system, such as a set of computer-executable instructions, and, although the logical order is illustrated in the flowchart, in some cases, may be different The steps shown or described are performed in the order herein.

INDUSTRIAL APPLICABILITY With the method and apparatus of the present invention, a core network can determine a base station in a local gateway service area, so that when a user's local access downlink data arrives, the user can be performed in an area that supports local access by the user. Paging can save resources on the air interface.

Claims

Claim

A local access paging optimization method, the method includes: when the mobility management unit learns that downlink data arrives, determining a source of the downlink data, and when the downlink data is local access data, performing a local access area Paging.

2. The method according to claim 1, wherein, in the step of determining the source of the downlink data, the mobility management unit according to the gateway information of the downlink data or the packet data network (PDN) connection information to the downlink data Source to judge.

3. The method according to claim 2, wherein the gateway information or the PDN connection information of the downlink data arrival is reported by the serving gateway (S-GW) or the local gateway (L-GW) to the mobility management unit.

4. The method according to claim 2, wherein the step of performing paging in the local access area comprises: the mobility management unit querying the query server according to the gateway information or gateway information obtained from the PDN connection mapping Obtaining the identification information of the base station in the local access area, and determining the paging range according to the queried content, and indicating that the base station in the paging range performs local access paging.

5. The method according to claim 4, wherein the mobility management unit instructs a base station in the paging range to perform a local access paging comprises: the mobility management unit from the determined paging Selecting a direct connection base station to initiate paging in the range; or the mobility management unit sends paging range information to a gateway of the non-directly connected base station, The gateway selects a base station to initiate paging from the paging range; or the mobility management unit selects, from the determined paging range, a direct connected base station that meets a predetermined condition to initiate paging, where the predetermined condition is determined by the following parameters: One or several determinations: Closed User Group

(CSG) subscription information and/or tracking area identification list information, which is determined to meet a predetermined condition when matched with the predetermined condition parameter; or the mobility management unit sends paging range information to a gateway of the non-directly connected base station, The gateway selects a base station that meets a predetermined condition from the paging range to initiate paging, and the predetermined condition is determined by one or more of the following parameters: CSG subscription information and/or tracking area identifier list information, and When the predetermined condition parameters are matched, it is determined that the predetermined condition is met.

6. The method according to claim 2, wherein the step of performing paging in the local access area comprises: the mobility management unit transmitting the obtained gateway information or gateway information obtained from the PDN connection mapping to the core network for scheduling The base station in the paging range determines whether the user is paging the user according to the local gateway configuration information of the local area; or the mobility management unit sends the gateway information and the paging range information scheduled by the core network to the core network. a base station gateway within a predetermined paging range, the base station is selected by the base station gateway, and the gateway information is sent to the selected base station, and the selected base station according to local gateway information and its own local gateway The configuration information determines whether the user is paged.

7. The method of claim 1, wherein the mobility management unit is a Mobility Management Entity (MME) or a Serving General Packet Radio Service Support Node (SGSN).

A local access paging optimization apparatus, comprising: a notification receiving unit, a determining unit, and a paging control unit, wherein: the notification receiving unit is configured to: receive a notification that downlink data arrives; and the determining unit is configured to: Gateway information or packet data network based on downlink data arrival (PDN) connection information determines whether the downlink data is local access data; the paging control unit is configured to: when the determining unit determines that the downlink data is local access data, control the base station or the gateway to perform paging in the local access area .

The device of claim 8, wherein the device further comprises a query unit and a paging range determining unit, wherein: the query unit is configured to: when the determining unit determines that the downlink data is local access data, Querying the query server to obtain the identification information of the base station in the local access area; the paging range determining unit is configured to: determine the paging range according to the content queried by the query unit; the paging control unit is set to press The base station or the gateway is controlled to perform paging in the local access area as follows: The base station or the gateway within the paging range is controlled to perform local access paging.

The device according to claim 8, wherein the paging control unit is further configured to: send the gateway information that the downlink data arrives or the gateway information obtained according to the PDN connection mapping to the base station in the predetermined paging range of the core network. Instructing the base station to determine whether to page the user according to its local gateway configuration information; or sending the gateway information and the predetermined paging range information of the core network to the base station gateway in the predetermined paging range of the core network, indicating the base station The gateway selects the base station to perform paging in the local access area.

11. The apparatus according to claim 8, wherein

Point (SGSN).