Network side processing method in subscriber handover process, network element equipment and network system

Abstract

The invention discloses a network side processing method during user switching, which is applicable to UE (user equipment) which does not bear the context. The method comprises the following steps that: after a first network receives an attach request message sent by the UE, the first network determines that the UE starts ISR between the UE and a second network, and sends information of instructing the UE to start the ISR (idle-mode signaling reduction) between the UE and the second network to the UE. The technical proposal provided by the invention can start the ISR in attach flow. For an E-UTRAN network, a mobility management network element is MME; and for a GERAN / UTRAN network, a mobility management network element is SGSN.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a network side processing method, network element equipment and network system during user switching. Background technique [0002] The core network of the wireless evolved network mainly includes three logical functional entities: the Mobility Management Entity (MME), the Serving Gateway (S-GW), and the Packet Data Network Gateway (PDN-GW). Among them, MME is a mobile management entity, responsible for non-access stratum (Non Access, NAS) signaling encryption, roaming, tracking and other functions, assigning user temporary identity, security functions, etc., it corresponds to the current Universal Mobile Communication System (Universal Mobile Communication System) The control plane part of the GPRS Service Support Node (Serving GPRS Support Node, SGSN) inside the Telecommunications System, UMTS). The S-GW is responsible for the local mobility anchor point and the mobilit...

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Problems solved by technology

[0022] Prior art 1 has the following disadvantages: From the perspective of the attachment procedure of the prior art, the UE will not establish an ISR mechanism in the Attach procedure

[0029] The second prior art has the following disadvantages: UE establishes an ISR connection between the MME and the SGSN, and when the bearer context on the SGSN side changes (here, the bearer context of the UE is deleted), the UE returns to the MME side to trigger the execution of the location update process, After the MME synchronizes the context from the SGSN side, it finds that there is no UE bearer context, so the existing location update procedure TAU cannot re-establish the default bearer

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