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Uplink control information feedback method

A technology of physical uplink and control channel, which is applied in the field of transmission of uplink control information on the physical uplink control channel to achieve the effect of avoiding overhead

Active Publication Date: 2013-09-25
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for transmitting uplink control information in coordinated multi-point, which solves the problem of how user equipment feeds back the uplink control information of multiple transmission points on the physical uplink control channel caused by coordinated multi-point

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  • Uplink control information feedback method

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Embodiment Construction

[0010] In order to better understand the spirit of the present invention, it will be further described below in conjunction with some preferred embodiments of the present invention.

[0011] According to the type of information contained in the control signaling, the physical uplink control channel supports seven different uplink control information formats, which are PUCCH formats 1, 1a, 1b, 2, 2a, 2b and 3, respectively. Among them, PUCCH formats 1, 1a, and 1b are mainly about the feedback / transmission of HARQ-ACK, and the physical uplink control channel allocation is based on the lowest numbered control channel element of the downlink allocation of the physical downlink control channel in the serving cell ( CCE, Channel Control Element). For each user equipment (UE, User Device), it can only send two code blocks at most, and each code block is 1 bit. Therefore, even if multiple transmission points provide services for one user equipment, the user equipment can still perfor...

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Abstract

The invention provides an uplink control information transmission method in multi-point cooperation. The feedback method for channel state information of multiple transmission points concentrated in multi-point cooperation comprises the steps that reference signals of the transmission points are received; the channel state information of each of the transmission points is assessed based on the reference signals of the transmission points; the channel state information of the transmission points is multiplexed on a physical uplink control channel (PUCCH) in the transmission points for transmission according to a certain mapping sequence. The problem that how user equipment carries out feedback on the uplink control information of the transmission points on the PUCCH is solved, and further development and application of the multi-point cooperation technology are facilitated.

Description

technical field [0001] The present invention relates to a transmission method of uplink control information in a wireless communication system, in particular to a transmission method of uplink control information on a physical uplink control channel. Background technique [0002] The Long Term Evolution (LTE, Long Term Evolution) / Long Term Evolution-Advanced (LTE-Advanced) project is the largest new technology research and development project initiated by the Third Generation Partnership Project (3GPP, 3rd Generation Partnership Project) in recent years. The technology with OFDM / FDMA as the core is regarded as "quasi-4G" technology. [0003] According to LTE Rel-8 / 9 / 10, uplink L1 / L2 control signaling is used to dynamically indicate downlink and uplink transport channels. The user equipment uses an uplink control channel, that is, a Physical Uplink Control Channel (PUCCH, Physical Uplink Control Channel) to report periodic L1 / L2 control signaling. The uplink control signali...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06
CPCH04L1/1671H04L1/1861H04L5/0057H04L5/0055H04L5/0035H04B7/024H04L5/0053
Inventor 刘瑾朱旭东孙芳蕾
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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