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Hybrid automatic retransmission request processing method and device under spatial multiplexing mode

An automatic retransmission request and spatial multiplexing technology, applied in the field of communication, can solve the problem of no spatial multiplexing mode HARQ processing implementation scheme, etc.

Active Publication Date: 2013-03-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] There is no complete implementation of spatial multiplexing mode HARQ processing in the existing LTE technology

Method used

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  • Hybrid automatic retransmission request processing method and device under spatial multiplexing mode
  • Hybrid automatic retransmission request processing method and device under spatial multiplexing mode
  • Hybrid automatic retransmission request processing method and device under spatial multiplexing mode

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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0022] The HARQ processing method during spatial multiplexing transmission in the embodiment of the present invention considers different processing procedures according to different feedback flags. For example, feedback flags can be broken down into the following different cases:

[0023] 1. The feedback flag is two ACK (Acknowledgment, confirmation);

[0024] 2. The feedback flag is a NACK (Negative Acknowledgment, negative acknowledgment) and an ACK, that is, the TB transmission of one codeword is successful, and the TB transmission of another codeword fails;

[...

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Abstract

The invention discloses a hybrid automatic retransmission request (HARQ) processing method under a spatial multiplexing mode. The method comprises the following steps: ending HARQ retransmission whenfeedback marks are two confirmation ACKs; and carrying out HARQ process according to retransmission times and rank adaptation when the feedback marks comprise negative confirmation NACKs. The invention also discloses HARQ processing device and base station under a spatial multiplexing mode. The invention can be used for processing the HARQ under the spatial multiplexing mode.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to the hybrid automatic repeat request processing technology of spatial multiplexing mode. Background technique [0002] If both the transmitting end and the receiving end of the wireless communication system have multiple antennas, in some cases, the data rate of the system can be doubled by means of spatial multiplexing. Applying HARQ (Hybrid Automatic Repeat Request, Hybrid Automatic Repeat Request) to introduce retransmission time diversity can further improve the reliability of space multiplexing transmission. [0003] The layers in the LTE (Long Term Evolution, Long Term Evolution) system spatial multiplexing transmission process represent the number of multiplexed data streams supported on the same time-frequency resource during spatial multiplexing, and the number of layers is equal to the rank finally determined by the base station. Currently supported The m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18
Inventor 钱颖张超
Owner HUAWEI TECH CO LTD