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Method and device for remapping channel

A remapping and channel technology, applied in the field of mobile communication, can solve the problems of I/Q leakage randomization, protocol incompatibility, high overhead, etc., to avoid I/Q leakage, improve detection performance, and avoid high overhead.

Active Publication Date: 2013-01-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0057] The present invention provides a method and device for PHICH remapping, so as to randomize I / Q leakage, and at the same time, avoid the problems of ineffectiveness, high overhead and incompatibility with protocols existing in existing solutions

Method used

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  • Method and device for remapping channel
  • Method and device for remapping channel
  • Method and device for remapping channel

Examples

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Embodiment Construction

[0073] In the embodiment of the present invention, when the PHICH is repeated, the UEs of all the Q (or I) PHICHs are remapped at the same time, and the I / Q leakage is randomized, so as to alleviate the PHICH detection performance degradation caused by the I / Q leakage. problem, thereby improving the detection performance of PHICH.

[0074] see image 3 , is a flowchart of an embodiment of the PHICH remapping method of the present invention, including:

[0075] S301: Using the orthogonal sequence number n in the PHICH group PHICH seq , to distinguish between Q-way PHICH and I-way PHICH;

[0076] Still taking Table 1 as an example, for ordinary CP, n PHICH seq = 0 ~ 3 The PHICH is the I-way PHICH, n PHICH seq = 4 ~ 7 The PHICH is the Q-path PHICH; for the long CP, n ...

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Abstract

A method and apparatus of channel remapping are provided, wherein the method includes the following steps: utilizing the orthogonal sequence number of the channel group, distinguishing the Q-channel and the I-channel; setting that UEs of all Q-channels shift in Q-channel modulation sequence with the presetting offset when remapping, or, setting that UEs of all I-channels shift in I-channel modulation sequence with the presetting offset when remapping. It can been seen that as just shifting the UEs of I-channels or Q-channels, and just shifting them in the range of I-channels or Q-channels, the original I / Q corresponded relation is upset, thereby the problem of I / Q leaking can be avoided skillfully, and the channel detecting capability can be improved.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a channel remapping method and device. Background technique [0002] LTE (Long Term Evolution, Long Term Evolution) of mobile communication is a long-term evolution technology based on UMTS (Universal Mobile Telecommunication System, Universal Mobile Communication System) of the 3GPP (Third Generation Partnership Project) standardization organization. The LTE standardization research work mainly focuses on physical layer, air interface protocol and network structure, among which the physical layer technology is regarded as the basis and symbol of the wireless communication system. 3GPP adopts OFDMA (Orthogonal Frequency Division Multiplexing Access) in the downlink of LTE, and SC-FDMA (Single Carrier Frequency Division Multiplexing Access, Single Carrier Frequency Division Multiple Access) method is adopted. [0003] HARQ (Hybrid Automatic Repeat Request, hy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L1/00H04L1/06
CPCH04L5/0044H04L2027/0016H04L5/0037
Inventor 文雪
Owner HUAWEI TECH CO LTD