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

A multi-carrier system and component carrier technology, applied in the field of communication, can solve the problems of UE not being able to receive, waiting for scheduling, poor reliability, etc.

Active Publication Date: 2015-01-28
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, the activation / deactivation reliability scheme of LTE-A system carrier aggregation technology is provided, including:

[0113] Method 1: (for activation / deactivation)

[0114] Using the DCI method specifically includes two implementation methods:

[0115]Method A:

[0116] When activating the CC, the base station sends an activation command to the UE through DCI, indicating to activate 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 the CC, the base station sends a deactivation command to the UE through DCI, indicating to deactivate the CC; if the UE successfully receives the deactivation command, it deactivates the CC and sends a reception success message to the base station. feedback message.

[0118] Method B:

[0119] When activating the CC, the base station sends an activation command to the UE through ...

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Abstract

The present disclosure provides an optimized method and system for activating and deactivating a component carrier in a multi-carrier system, the method comprises: when activating a Component Carrier (CC), a base station sends an activation command to a User Equipment (UE) through Downlink Control Information (DCI) to indicate the UE to activate the CC; if receiving the activation command successfully, the UE activates the CC and sends an acknowledgement of the activation command to the base station; when deactivating the CC, the base station sends a deactivation command to the UE through the DCI to indicate the UE to deactivate the CC; if receiving the deactivation command successfully, the UE deactivates the CC and sends an acknowledgement of the deactivation command to the base station. The present disclosure can improve the reliability of activation and deactivation of the carrier aggregation technology in an LTE-A system, and has the advantages such as simple configuration and operation, and keeping the status of CC in the base station and the status of CC in the UE consistent.

Description

technical field [0001] The present invention relates to the communication field, 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 growing demand for large bandwidth and high-speed mobile access, the Third Generation Partnership Projects (Third Generation Partnership Projects, 3GPP for short) launched the Long-Term Evolution advanced (LTE-Advanced or LTE-A for short) standard . LTE-A adopts a series of new technologies on the basis of LTE to expand the frequency domain and air 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, up to 100 MHz and spectrum aggregation. A user equipment (User Equipment, UE for short) may simultaneously receive / sen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L5/0053H04L5/001H04L5/0098H04L27/06H04W72/231H04L1/16H04L1/1812H04W76/28
Inventor 陈思张健王冠宙
Owner ZTE CORP