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Method for feeding back identified/unidentified message in multi-carrier system

A multi-carrier system, unacknowledged technology, applied in multi-frequency code systems, transmission systems, digital transmission systems, etc., can solve the problem of ACK/NACK messages not being raised

Inactive Publication Date: 2010-10-27
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, for a multi-carrier system, UE can receive downlink data signals transmitted on different component carriers, but how to feed back ACK / NACK messages accordingly has not been proposed

Method used

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  • Method for feeding back identified/unidentified message in multi-carrier system
  • Method for feeding back identified/unidentified message in multi-carrier system
  • Method for feeding back identified/unidentified message in multi-carrier system

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0034] In a multi-carrier system, such as an LTE communication system, in each component carrier, the downlink control signal transmitted through the PDCCH and the downlink data signal transmitted through the PDSCH are encoded and decoded separately and transmitted separately. Each PDCCH corresponds to a component carrier and is used to schedule the PDSCH of the component carrier, or schedule the PDSCH of other component carriers other than the component carrier. When the user equipment is configured to receive downlink data signals on multiple component carriers, one of the component carriers is set as a primary component carrier, and the remaining component carriers are set as secondary component carriers. For the downlink data signal transmitted by t...

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Abstract

The invention discloses a method for feeding back identified / unidentified message in a multi-carrier system. A main unit carrier is set for user equipment in multiple unit carriers, and secondary unit carriers are set for the rest. The method comprises that: the user equipment receives downlink control signals sent by the multiple unit carriers through a physical downlink control channel (PDCCH) and downlink data signals sent through a physical downlink shared channel (PDSCH); and the user equipment identifies an ACK / NACK channel corresponding to the PDSCH in the multiple unit carriers and used for feeding back the identified / unidentified ACK / NACK message according to a control channel equipment (CCE) index of the PDCCH of the set main unit carrier. The method provided by the invention can feed back the ACK / NACK message in the multi-carrier system.

Description

technical field [0001] The invention relates to the field of wireless communication systems, in particular to a method for feeding back acknowledgment / non-acknowledgement (ACK / NACK) messages in a multi-carrier system. Background technique [0002] In a wireless communication system, it includes downlink transmission and uplink transmission. Among them, the downlink transmission is to send a downlink signal from the base station to the user equipment. The downlink signal includes a downlink data signal, a downlink control signal and a downlink reference signal. The downlink data signal is transmitted through a physical downlink shared channel (PDSCH), and the downlink control channel is transmitted through a physical downlink control channel. (PDCCH) transmission; uplink transmission is to send uplink signals from the user equipment to the base station. The uplink signals include uplink data signals, uplink control signals and uplink reference signals. The uplink data signals...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12H04L27/26H04L1/16
CPCH04L5/0094H04L1/1854H04L1/1861H04L5/0053
Inventor 李迎阳李小强
Owner BEIJING SAMSUNG TELECOM R&D CENT
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