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Method and system for establishing local internet protocol (IP) connection
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A connection establishment, local technology, applied in the field of communication, can solve the problem of unoptimized routing, reduce the delay of user data transmission, reduce the consumption of network resources, and improve the user experience.
Inactive Publication Date: 2014-04-30
ZTE CORP
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[0006] The main purpose of the present invention is to provide a method and system for establishing a local IP connection, so as to solve the problem of unoptimized routing caused by users accessing different base stations and still connecting to the previous local gateway after they move
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example 1
[0049] This example takes the mobility management entity as an example to describe in detail, image 3 For the detailed flowchart of the local IP connection establishment method according to the example 1 of the present invention, as image 3 As shown, the method includes the following steps:
[0050] Step 301: The UE connects to the network (the gateway is L-GW1 or PGW1) through the base station subsystem (that is, the base station, denoted as (H)eNB1) and performs local IP access;
[0051] Step 302: The UE moves to the coverage of the (H)eNB2, and the MME obtains the current location of the UE. The specific way to obtain the location can be one of the following three ways:
[0052] Step 302a: The UE moves under the coverage of (H)eNB2. When the UE is in the idle state, the UE detects from the air interface broadcast message sent by the base station that the current location tracking area (Tracking Area, TA for short) is not in the step 302a. In 301, the TA List (TA list) ...
example 2
[0069] Figure 4 For the detailed flowchart of the local IP connection establishment method according to the example 2 of the present invention, as Figure 4 As shown, it specifically includes the following steps:
[0070] Step 401, under the coverage of (H)eNB1, the UE initiates an attach request or a PDN connection establishment request to the MME;
[0071] Step 402, the MME performs gateway selection, and sends a session establishment request to the selected gateway L-GW1 / P-GW1, so as to request the gateway to establish a PDN connection for the UE;
[0072] Step 403, the gateway sends a session establishment reply to the MME, which carries MS Info Change Reporting Action (Start) (MS Info Change Reporting Action (Start)), which is used to instruct the MME to report the latest location of the UE when the location of the UE changes ;
[0073] Step 404, the MME sends an Attach Accept or a PDN Connection Establish Accept to the UE;
[0074] Step 405, same as step 302;
[00...
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Abstract
The present invention provides a Local Internet Protocol Access (LIPA) or Selected Internet Protocol Traffic Offload (SIPTO) establishment method and system. The method includes the following steps: a user terminal is handed over from a source base station to a target base station; an LIPA or SIPTO from the user terminal to a first local gateway via the target base station is released, and an LIPA or SIPTO from the user terminal to a second local gateway via the target base station is established. With the present invention, the network resource consumption and the user data transmissiondelay are reduced, and the user experience is improved.
Description
technical field [0001] The present invention relates to the field of communications, in particular to a method and system for establishing a local IP connection. Background technique [0002] The mobile communication network includes a base station subsystem, a mobility management entity, a core network gateway, and a home user server. The connection relationship of the mobile communication network in related technologies is as follows: figure 1 shown. The mobility management entity is responsible for mobility management, processing of non-access stratum signaling, and management of user mobility management context; core network gateways include serving gateways (Serving Gateway, S-GW) and packet data network gateways (Packet DataNetwork Gateway, referred to as P-GW), S-GW is an access gateway device connected to the Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio AccessNetwork, referred to as E-UTRAN). -Transmit data between UTRAN a...
Claims
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