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Method and device for replacement of main cell

A technology of primary cell and cell, applied in the field of communication, can solve the problems that there is no effective solution for the LTE-A system, and the handover process of the LTE system cannot be directly applied.

Active Publication Date: 2011-06-01
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The LTE-A system involves the handover of multiple cells of the primary cell and the secondary cell, and cannot directly apply the handover process of the LTE system, and there is currently no effective solution for the handover process in the LTE-A system

Method used

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  • Method and device for replacement of main cell
  • Method and device for replacement of main cell

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Embodiment Construction

[0029] In the embodiment of the present invention, when the UE receives the primary cell replacement command, it deletes the configuration information of the source secondary cell, and retains the configuration information of the source primary cell, and does not immediately delete the configuration information of the source primary cell. Then, when executing the primary cell replacement command, According to the configuration information of the target primary cell carried by the primary cell replacement command, the configuration information of the retained primary cell is updated, and the source primary cell is replaced to the target primary cell, thereby realizing the replacement of the primary cell in the LTE-A system.

[0030] see figure 1 , the communication system in this embodiment includes a base station and a UE. The base station may be eNB or NodeB, etc.

[0031] The base station is used to generate a primary cell change command including the configuration informat...

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Abstract

The invention discloses a method and device for replacement of a main cell, which are used for realizing the replacement of the main cell in a carrier aggregation system. The method comprises the steps of: by means of UE (User Equipment), deleting configuration information of a source auxiliary cell when a main cell replacing command is received; obtaining the configuration information of a target main cell according to the configuration information of the target main cell carried by the main cell replacing command and the configuration information of the source main cell reserved by the main cell replacing command; and replacing the obtained configuration information from the source main cell to the target main cell. The invention also discloses a device used for realizing the method.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and a device for changing a primary cell. Background technique [0002] In long-term evolution (LTE) and previous wireless communication systems, there is only one carrier in a cell, and the maximum bandwidth in the LTE system is 20 MHz. In order to increase the transmission bandwidth, an upgraded long-term evolution (LTE Advanced, LTE-A) system has been proposed in the industry. [0003] In the LTE-A system, the peak rate of the system is greatly improved compared with LTE, and it is required to reach 1Gbps in the downlink and 500Mbps in the uplink. If only one carrier with a maximum bandwidth of 20MHz is used, the peak rate requirement cannot be met. Therefore, the LTE-A system needs to expand the bandwidth that the terminal can use, thus introducing carrier aggregation (Carrier Aggregation, CA) technology, which aggregates multiple continuous or discontinuous carri...

Claims

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Application Information

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IPC IPC(8): H04W36/08
Inventor 梁靖李海涛
Owner DATANG MOBILE COMM EQUIP CO LTD
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