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Method and system of optimizing activation and deactivation of component carrier in multicarrier system

A technology of multi-carrier system and component carrier, applied in the field of communication, can solve the problems of UE unable to receive, poor reliability, waiting for scheduling, etc.

Active Publication Date: 2011-06-08
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, DCI has the best timeliness, but a major disadvantage of DCI is that its reliability is relatively poor.
If the PDCCH decoding fails, it will cause the base station to send data on the CC that it thinks is active, but the UE cannot receive it; or the UE does not need to wait for scheduling

Method used

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  • Method and system of optimizing activation and deactivation of component carrier in multicarrier system
  • Method and system of optimizing activation and deactivation of component carrier in multicarrier system
  • Method and system of optimizing activation and deactivation of component carrier in multicarrier system

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Embodiment Construction

[0112] In the present invention, an activation / deactivation reliability scheme for the carrier aggregation technology of the LTE-A system is provided, including:

[0113] Method 1: (Applicable to activation / deactivation)

[0114] The DCI method includes two implementation methods:

[0115] Method A:

[0116] When activating the CC, the base station sends an activation command to the UE through DCI to instruct the activation of the CC; if the UE successfully receives the activation command, activates the CC, and sends a feedback message of successful reception to the base station;

[0117] When deactivating a CC, the base station sends a deactivation command to the UE through DCI, instructing to deactivate the CC; if the UE successfully receives the deactivation command, it deactivates the CC, and sends a successful reception to the base station Feedback message.

[0118] Method B:

[0119] When activating the CC, the base station sends activation commands to the UE multiple times in succ...

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Abstract

The invention discloses a method and a system of optimizing the activation and deactivation of a component carrier(CC) in a multicarrier system, wherein the method comprises: sending an activation command to user equipment (UE) to indicate the activation of the CC by a base station through downlink control information (DCI) when activating the CC; activating the CC and sending to the base station a feedback message regarding successful reception if the UE successfully receives the activation command; sending a deactivation command to the UE to indicate the deactivation of the CC by the base station through the DCI when deactivating the CC; and deactivating the CC and sending to the base station a feedback message regarding successful reception if the UE successfully receives the deactivation command. The invention has the advantages that the method, simple in configuration and operation, can raise the activation / deactivation reliability of the carrier aggregation technology of a long-term evolution advanced (LTE-A) system, and ensure a consistent CC state between the base station and the UE, etc.

Description

Technical field [0001] The present invention relates to the field of communications, and in particular to an optimization method and system for component carrier activation and deactivation in a multi-carrier system. Background technique [0002] In order to meet the increasing demand for high-bandwidth and high-speed mobile access, the Third Generation Partnership Projects (3GPP) has launched the Long-Term Evolution advanced (LTE-Advanced or LTE-A) standard. . LTE-A adopts a series of new technologies on the basis of LTE to expand the frequency domain and space domain to achieve the purpose of improving spectrum utilization and increasing system capacity. The carrier aggregation technology can aggregate two or more component carriers (Component Carrier, CC for short) to support a wider frequency band, for example, reaching 100 MHz and spectrum aggregation. User equipment (User Equipment, UE for short) can simultaneously receive / send data on one or more component carriers, and ...

Claims

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Application Information

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IPC IPC(8): H04L27/26
CPCH04L27/06H04L5/001H04L5/0053H04L5/0098H04W24/10H04W72/12
Inventor 陈思张健王冠宙
Owner ZTE CORP