Method and apparatus for accessing network

Abstract

Embodiments of the present invention relate to network access methods and apparatuses. One of the methods includes: receiving, by a second SGSN, a first reject cause value sent by an access network device, where the first reject cause value is sent by a first SGSN to the access network device; acquiring, by the second SGSN, a second reject cause value from itself; and sending, by the second SGSN, a softer reject cause value between the first reject cause value and the second reject cause value to the access network device.

Description

technical field [0001] The embodiments of the present invention relate to communication technology, and in particular to a network access method and device. Background technique [0002] In a general packet radio service (General Packet Radio Service, GPRS for short) network, a terminal entity / mobile terminal (Terminal Entity / Mobile Terminal, TE / MT for short), that is, an MS, can Access to the Packet Data Network (PDN) through the Serving GPRS Supporting Node (SGSN) of multiple operators, this feature can be called multi-operator core network (Multi-operator core network) Operator Core Network, referred to as MOCN). Wherein, the above-mentioned characteristic of the BSS can be called as supporting MOCN. [0003] When the MS requests to access the network through the BSS, since the BSS cannot know which operator's SGSN can serve the MS, the BSS will try to send the access request message from the MS to each SG SN one by one. If the SGSN that receives the access request mes...

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Problems solved by technology

[0004] Since each SGSN uses its own LLC parameters to interact with the MS, if the access request rejection message received by the MS containing the rejection reason value is not the one sent by the SGSN last selected by the BSS (the SGSN that interacted with the MS last) request rejection message, the LLC parameters corresponding to the access request rejection message received by the MS may be inconsistent with the LLC parameters of the SGSN, for example: the sequence number used by the LLC layer corresponding to the access request rejection message received by the MS is less than The LLC parameter corresponding to the access request rejection message sent by the SGSN causes the MS to discard the above access request rejection message. After a period of time, the MS requests to access the network again through the BSS. It is impossible to know the reason for the denied access, which increases the access delay of the network

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