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Switch method straddling wireless access technique

A wireless access technology, wireless access network technology, applied in the field of wireless communication, can solve problems such as wasting network resources, increasing UE burden, increasing UE and network signaling interaction process, and achieves the effect of saving network resources and reducing burden

Inactive Publication Date: 2011-11-30
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0042] It can be seen from the above that in the prior art, if the UE activates the ISR function, since there is no relevant mechanism to maintain or rebuild the ISR during the handover, the UE needs to initiate a TAU in the idle state to re-establish the ISR after the handover; in addition , if the UE does not activate the ISR under the two coverages before and after the handover, and does not perform any processing on the ISR during the handover, the UE also needs to initiate a TAU in the idle state to re-establish the ISR after the handover is completed; thus increasing the UE and The signaling interaction process of the network increases the burden on the UE and wastes network resources

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  • Switch method straddling wireless access technique
  • Switch method straddling wireless access technique
  • Switch method straddling wireless access technique

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Embodiment Construction

[0065] The present invention will be described in detail below with reference to the drawings and embodiments.

[0066] image 3 It is a flowchart of a method for activating an ISR during a handover process initiated by a UE from an E-UTRAN network to a UTRAN network according to the first embodiment of the present invention. In this embodiment, the UE is handed over to an unregistered routing area of ​​the UTRAN network. like image 3 As shown, the method includes the following steps:

[0067] Step 301, due to the strength of the radio side signal or the decision of the source eNB, the UE initiates a handover procedure and decides to handover to UTRAN.

[0068] In step 302, the source eNB initiates a handover request to the source MME, and the request carries the cause of the handover, the identity of the target RNC, the identity of the source eNB, and a list of bearers for data forwarding.

[0069] Step 303: After the source MME completes the mapping of the EPS bearer to...

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Abstract

The invention relates to a handoff method crossing the wireless access technology, comprising: when UE is switched over from source wireless access network to target wireless access network, a source mobile management unit of the source wireless access network receives a handoff request and then sends a forwarding relocating request to a target mobile management unit of the target wireless access network; the request comprises an indication that the source mobile management unit is provided with ISR ability; if the target mobile management unit is provided with ISR ability and judges that S-GW need not be chosen for the UE again, ISR function of the UE is activated or kept, and the mark activating the ISR function is comprised in corresponding forwarding relocating response; after receiving the forwarding relocating response, the source mobile management unit activates or keeps the ISR function of the UE; the wireless access network is: UTRAN or E-UTRAN; the source mobile management unit and the target mobile management unit are separately source SGSN and target MME, or source MME and target SGSN.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method for handover in different radio access technology (Radio Access Technology, RAT for short) coverage areas. Background technique [0002] In order to maintain the competitiveness of the third generation mobile communication system in the communication field, the 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) standard working group is working on the research of EPS (Evolved Packet System, evolved packet domain system). The whole EPS system such as figure 1 As shown, it mainly includes two parts: E-UTRAN (Evolved Universal Terrestrial Radio Access Network, Evolved Universal Terrestrial Radio Access Network) and EPC (Evolved Packet Core, Evolved Packet Core Network). The EPC of the system can support users from GERAN (GSM EDGE radio accessnetwork, Global System for Mobile Communications Enhanced Data Rate GSM Evolution Radio Acces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W8/04H04L12/56H04L45/74
CPCY02B60/43Y02D30/00
Inventor 梁爽王静朱进国卢飞叶敏雅
Owner ZTE CORP