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Method for determining physical uplink control channel resources in multi-carrier system

A technology for controlling channel resources and multi-carrier systems, which is applied in the field of digital communication and can solve problems affecting system performance

Active Publication Date: 2010-08-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The rapid development of digital communication systems puts forward higher requirements for the reliability of data communication. However, under harsh channels, especially in high data rate or high-speed mobile environments, serious problems such as multipath interference and Doppler shift affect system performance

Method used

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  • Method for determining physical uplink control channel resources in multi-carrier system
  • Method for determining physical uplink control channel resources in multi-carrier system
  • Method for determining physical uplink control channel resources in multi-carrier system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] In the first embodiment, the user equipment uses the NxPUCCH mode to send the response message, and the high layer configures the user equipment to adopt the feedback mode of sending the response message on multiple physical uplink control channels of the uplink component carrier.

[0106] In the case where the user equipment sends a response message on multiple physical uplink control channels PUCCH of the uplink component carrier k (that is, NxPUCCH mode), the user equipment carries the N downlink components of the physical downlink shared channel PDSCH of the user equipment The carrier demodulates the physical downlink shared channel to obtain N response messages corresponding to the N downlink component carriers, and HARQ_ACK(i) represents the response message corresponding to the i-th downlink component carrier; the method for determining the channel resource index used to send the response message includes :

[0107]Demodulate the physical downlink shared channel ...

Embodiment 2

[0119] In the second embodiment, the user equipment uses bundling to send the response message, and the high layer configures the user equipment to use the bundling mode to feed back the response message.

[0120] In the case that the user equipment uses the bonding mode to send multiple response messages on one physical uplink control channel of the uplink component carrier k, the user equipment carries out the N downlink component carriers carrying the physical downlink shared channel of the user equipment After the demodulation of the physical downlink shared channel, a logical AND operation is performed to obtain a 1-bit response message b(0) or a 2-bit response message b(0)b(1); the method for determining the channel resource index for sending the response message includes:

[0121] When demodulating the physical downlink shared channel PDSCH according to the physical downlink control channel PDCCH corresponding to the physical downlink shared channel PDSCH of the downlink...

Embodiment 3

[0132] Embodiment 3 is another implementation manner in which the user equipment sends the response message by using bundling, and the high layer configures the user equipment to use the bundling mode to feed back the response message.

[0133] When the user equipment uses the bonding mode to send a response message on a physical uplink control channel of the uplink component carrier k, the user equipment performs physical downlink on the N downlink component carriers carrying the physical downlink shared channel of the user equipment After the demodulation of the shared channel, a logical operation is performed to obtain a 1-bit response message b(0) or a 2-bit response message b(0)b(1); the method for determining the channel resource index for sending the response message includes:

[0134] Demodulate the physical downlink shared channel PDSCH according to the physical downlink control channel PDCCH corresponding to the physical downlink shared channel PDSCH of the downlink c...

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Abstract

The invention provides a method for determining physical uplink control channel resources in a multi-carrier system, which comprises the steps: according to a physical downlink control channel PDCCH corresponding to a physical downlink shared channel PDSCH of a downlink component carrier i, the physical downlink shared channel PDSCH is demodulated; when a downlink component carrier j where the physical downlink control channel is positioned and an uplink component carrier k are a matched carrier pair, user equipment determines channel resource index nPUCCH, i of a physical uplink control channel PUCCH of a downlink component carrier i-corresponding response message on the uplink component carrier k, according to a mapping relationship indexed by a control channel element CCE of the physical downlink control channel PDCCH. The invention provides a complete ACK / NACK channel resource determining proposal, which is applied to system adopting carrier aggregation technology to realize the sending of ACK / NACK on the PUCCH.

Description

technical field [0001] The invention relates to the field of digital communication, in particular to a method for determining physical uplink control channel resources in a multi-carrier system. Background technique [0002] The rapid development of digital communication systems puts forward higher requirements for the reliability of data communication. However, under harsh channels, especially in high data rate or high-speed mobile environments, serious problems such as multipath interference and Doppler shift affect system performance. Therefore, an effective error control technology, especially a Hybrid Automatic Repeat Request (HARQ) technology has become a research hotspot in the communication field. [0003] In the HARQ mode, the code sent by the sending end can not only detect errors, but also have certain error correction capabilities. After receiving the codeword, the decoder at the receiving end first checks the error situation, and if it is within the error corr...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/12H04L1/16
CPCH04L1/0084H04L5/001H04L5/0055H04L1/1861
Inventor 梁春丽夏树强戴博喻斌
Owner ZTE CORP
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