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Method and device for transmitting PHICH (physical hybrid-ARQ indicator channel) symbolic data

A technology of symbol data and transmission method, which is applied in the field of information transmission, and can solve problems such as limited capacity, insufficient PHICH resources, and control channel interference

Active Publication Date: 2013-01-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the current time-domain PDCCH method, it is impossible to solve this problem through space division, and considering the backward compatibility of R8 and R9, the control channel method of time-domain PDCCH must be retained. How to use the space at this time? Sub-techniques to solve the interference between control channels need to be carefully studied
In view of the current research progress, consider sending downlink control information on PDSCH resources. Although this solves the problem of limited capacity and interference, it will bring about the problem of insufficient PHICH resources.

Method used

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  • Method and device for transmitting PHICH (physical hybrid-ARQ indicator channel) symbolic data
  • Method and device for transmitting PHICH (physical hybrid-ARQ indicator channel) symbolic data
  • Method and device for transmitting PHICH (physical hybrid-ARQ indicator channel) symbolic data

Examples

Experimental program
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Effect test

Embodiment 1

[0088] In this embodiment, the network side notifies each receiving side of the number and / or position of RBs occupied by the PHICH resources of each receiving side in the frequency domain PDSCH region through RRC signaling, and / or notifies each receiving side of the PHICH resources of each receiving side in the time domain PDSCH The position occupied by the area is notified to each receiving side; when the network side sends PHICH symbol data, the network side copies the PHICH symbol data sent to each receiving side three times, performs BPSK modulation on each PHICH symbol data, and converts the modulated PHICH The symbol data is subjected to scrambling and spread spectrum processing, wherein, during the spread spectrum processing, spread spectrum codes of different lengths or the same length can be used for the common cyclic prefix and the extended cyclic prefix, and the common cyclic prefix can be used 4-fold spread spectrum, the extended cyclic prefix can use 2-fold spread...

Embodiment 2

[0091]The network side of this embodiment notifies each receiving side of the number and position of RBs reserved by the PHICH resources of each receiving side in the frequency domain PDSCH area through RRC signaling; when the network side sends PHICH symbol data, it will send to each The PHICH symbol data on the receiving side is copied three times, BPSK modulation is performed on each PHICH symbol data, and the modulated PHICH symbol data is subjected to scrambling and spread spectrum processing. Spreading codes of different lengths or spreading codes of the same length can be used. The common cyclic prefix can use 4-fold spreading, and the extended cyclic prefix can use 2-fold spreading. When the extended cyclic prefix uses 2-fold spreading In the frequency mode, every two PHICH symbol data after spreading need to be zero-filled to make up four PHICH symbol data, and layer mapping and transmit diversity precoding are performed on the PHICH symbol data after scrambling and sp...

Embodiment 3

[0094] In this embodiment, the network side notifies each receiving side of the number and / or position of RBs occupied by the PHICH resources of each receiving side in the frequency domain PDSCH area through PDCCH signaling, and / or notifies each receiving side of the PHICH resources of each receiving side in the time domain PDSCH The position occupied by the area is notified to each receiving side; the PDCCH signaling can use CCE as the allocation unit, and the network side can place the PDCCH signaling in the last M (M>1) CCEs of the PDCCH area, or the network side Allocate the CCE position of the PDCCH signaling in the PDCCH area according to the subframe number, radio frame number, and cell identification information; when the network side sends PHICH symbol data, the network side copies the PHICH symbol data sent to each receiving side three times, Perform BPSK modulation on each PHICH symbol data, and perform scrambling and spread spectrum processing on the modulated PHICH...

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Abstract

The invention discloses a method for transmitting PHICH (physical hybrid-ARQ indicator channel) symbolic data, which comprises the following steps: a network side distributes PHICH resource for each receiving side at frequency domain and / or time domain PDSCH (physical downlink shared channel) area; when transmitting PHICH symbolic data, the network side interweaves the transmitted, diverted and precoded PHICH symbolic data; and the network side maps the processed PHICH symbolic data to the PHICH resource of each receiving side to transmit. The invention also discloses a method for receiving PHICH symbolic data, the network side and the receiving side. By virtue of the scheme, the capacity of the PHICH resource can be expanded; and the problem that the PHICH resource is not enough to use when the downlink control information is transmitted on the PDSCH resource is avoided.

Description

technical field [0001] The present invention relates to the information transmission technology of the Long Term Evolution Advanced system (LTE-Advanced, Long Term Evolution Advanced system), in particular to a physical hybrid retransmission request check indicator channel (PHICH) symbol data transmission method and device in LTE-Advanced . Background technique [0002] In LTE Release8 / 9, a common reference signal (CRS, Common Reference Signal) is designed in order to measure the quality of the channel and demodulate the received data symbols. The user equipment (UE, User Equipment) can use the CRS in the UE connection state Measure the quality of the channel, so as to determine the UE to perform cell reselection and handover to the target cell. When the interference level is high, the physical layer can disconnect the connection through the high-level related radio link connection failure signaling. In LTE R10, in order to further improve the average spectrum utilization o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04L1/00H04L1/16
CPCH04L5/0055H04L5/00
Inventor 郭森宝孙云锋戴博陈艺戬
Owner ZTE CORP
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