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Cell switching method and device in multi-carrier aggregation system

A technology of multi-carrier aggregation and cell handover, applied in electrical components, wireless communication, etc., can solve the problem that the cell handover method is not applicable to the CA system, achieve good compatibility, ensure handover quality, and improve service transmission efficiency

Active Publication Date: 2012-05-30
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention provides a cell switching method and device in a CA system to solve the problem that the current cell switching method is not applicable to the CA system

Method used

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  • Cell switching method and device in multi-carrier aggregation system
  • Cell switching method and device in multi-carrier aggregation system
  • Cell switching method and device in multi-carrier aggregation system

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Embodiment Construction

[0035] In general, the cell handover method in the CA system provided by the present invention is that the source eNB carries the carrier information of the target cell during the handover process, so that the UE can handover to a suitable carrier of the target cell according to the carrier information.

[0036] Generally speaking, the inventive method comprises the following steps:

[0037] [1] Carry the identity of the target cell and the carrier list information of the target cell in the handover request message sent by the source eNB to the target eNB;

[0038] [2] Carry the target cell identity and target cell carrier list information in the handover request confirmation message sent by the target eNB to the source eNB;

[0039] [3] The source eNB sends a handover command message including the target cell identity and target cell carrier list information to the UE;

[0040] [4] Executing a process in which the UE is handed over to the target cell corresponding to the tar...

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Abstract

The invention discloses a cell switching method of a multi-carrier aggregation system, comprising the following steps that: a switching request message transmitted to a target NB by a source NB carries a target cell identification and target cell carrier list information; a switching request determination message transmitted to the source NB by the target NB carries the target cell identificationand the target cell carrier list information; the source NB transmits a switching command message containing the target cell identification and the target cell carrier list information to UE; and theprocess of switching the UE to a target cell corresponding to the target cell identification can be executed, therefore, carrying the carrier information in the switching process, the invention can ensure that UE with different capabilities can be switched to a correct carrier, effectively improve the service transmission efficiency of an LTE-A system and effectively ensure the switching quality.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a cell switching method and device in a multi-carrier aggregation system. Background technique [0002] In some cases, for example, when the environment of the cell where the user equipment (User Equipment, UE) currently resides deteriorates, it is necessary to perform cell handover for the UE. This paper focuses on the cell handover scheme in the multi-carrier aggregation (CarrierAggregation, CA) communication system. The so-called CA refers to the collection of multiple continuous or discontinuous carriers in the same cell, and can serve UE at the same time when needed. , to provide the desired rate. CA is a technology introduced by the improved Long Time Evolution Advanced (LTE-A) system. The reason why LTE-A introduces CA is that the peak rate of LTE-A is greatly improved compared with LTE, and the downlink is required to reach 1Gbps. The uplink is 500M...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/08
Inventor 汪颖秦飞房家奕
Owner DATANG MOBILE COMM EQUIP CO LTD
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