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Feedback method and device and assignment method and device of multi-code word inter-layer switching mapping

A technology of multiple codewords and codewords is applied in the field of assignment methods and devices, and feedback methods and devices for switching between multiple codeword layers, which can solve the problems of large control channel overhead and achieve the effect of reducing overhead.

Inactive Publication Date: 2011-01-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in order to ensure the performance of the SIC receiver, two independent MCSs still need to be assigned for the two codewords. Similarly, two independent CQIs also need to be fed back, which makes the control channel overhead larger

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  • Feedback method and device and assignment method and device of multi-code word inter-layer switching mapping
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  • Feedback method and device and assignment method and device of multi-code word inter-layer switching mapping

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Embodiment Construction

[0058] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0059] The method and equipment in the embodiment of the present invention are based on the multi-codeword inter-layer switching mapping mode, and the receiving end adopts the multiple access system of interference cancellation technology, such as TDMA (Time Division Multiple Access, time division multiple access), FDMA ( Frequency Division Multiple Access, CDMA (Code Division Multiple Access, Code Division Multiple Access), OFDMA (Orthogonal Frequency Division Multiple Access, Orthogonal Frequency Division Multiple Access), etc., the Interference cancellation techniques include SIC and PIC (Parallel Interference Cancellation, Parallel Interference Cancellation). According to the gradual change of the channel, th...

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Abstract

The invention relates to mobile communication technology, and discloses a feedback method and a feedback device of multi-code word inter-layer switching mapping. The method comprises the following steps of: selecting one code word from a plurality of code words by a signal receiving end, determining and feeding back CQI (channel quality indicator) of a corresponding signal aiming at the selected code word; eliminating interference caused by the selected code word to corresponding signals of other code words; determining the CQI of the corresponding signals of the other code words; and periodically feeding back or feeding back information used for determining the CQI of the corresponding signals of the other code words through event triggering. The embodiment of the invention also provides an assignment method and an assignment device of the multi-code word inter-layer switching mapping. By using the methods and the devices, the control channel spending can be reduced.

Description

technical field [0001] The present invention relates to communication technology, in particular to a feedback method and equipment for switching mapping between multi-codeword layers, and an assignment method and equipment. Background technique [0002] MIMO (Multi Input Multi Output) technology is a major breakthrough in smart antenna technology in the wireless mobile communication field. This technology can double the capacity and spectrum utilization of the communication system without increasing the bandwidth. It is a new A key technology that must be adopted in a generation of mobile communication systems. [0003] In the MIMO system, the sending end may send signals in two ways of space division multiplexing, SCW (Single-Codeword, single-codeword) and MCW (Multi-Codeword, multi-codeword). Among them, the SCW method means that the sending end forms a codeword (CW) for multiple signals to be sent, and uses the same coding and modulation method to encode and modulate and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L1/00H04L1/06
Inventor 杜颖钢钱韬于萍
Owner HUAWEI TECH CO LTD