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Cell configuration method and device for changing primary cell

A cell configuration and primary cell technology, 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: 2012-03-14
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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  • Cell configuration method and device for changing primary cell
  • Cell configuration method and device for changing primary cell
  • Cell configuration method and device for changing primary cell

Examples

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Embodiment Construction

[0030] In the embodiment of the present invention, when the UE receives the Pcell change command, it retains the configuration information of the source Pcell and the source Scell, and does not immediately delete the configuration information of the source Pcell and the source Scell, and then when executing the Pcell change command, through 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 switched to the target primary cell, which realizes the handover of the primary cell in the LTE-A system, but does not need to implement the existing switching process.

[0031] see figure 1 , the communication system in this embodiment includes a base station and a UE. The base station may be eNB or Node B, etc.

[0032] The base station is used to generate a primary cell replacement command including the configuration i...

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Abstract

The invention discloses a cell configuration method for changing a primary cell, which are used for realizing the change of the primary cell in a carrier aggregation system. The method comprises the steps that a user equipment (UE) acquires the configuration information of the primary cell and a secondary cell through a primary cell change command; and through the acquired configuration information of the primary cell and the secondary cell and in combination with the reserved configuration information of an original primary cell and an original secondary cell, the UE acquires the configuration information of a target primary cell and a target secondary cell and switches the original primary cell and the original secondary cell to the target primary cell and the target secondary cell. The invention additionally discloses the device for realizing the method.

Description

technical field [0001] The present invention relates to the communication field, in particular to a cell configuration method and device for primary cell replacement. 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 d...

Claims

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Application Information

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IPC IPC(8): H04W36/06
CPCH04W36/0061H04W36/00692H04W36/08H04W36/28
Inventor 李海涛梁靖
Owner DATANG MOBILE COMM EQUIP CO LTD
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