Mixed automatic repeat request method and mixed automatic repeat request system for multi-input and multi-output system

A hybrid automatic retransmission and multi-output technology, which is applied in the direction of error prevention/detection by using the return channel, prevention/detection of errors through diversity reception, etc., can solve problems such as error retransmission, improve data transmission efficiency, and reduce errors. Bit rate, improve the effect of transmission reliability

Active Publication Date: 2013-01-16
盐城抱璞文化传媒有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the above problems, the present invention is proposed. The main purpose of the present invention is to provide a hybrid automatic repeat request mechanism used in MIMO systems, so as to solve the problem of repeated error retransmissions in related technologies

Method used

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  • Mixed automatic repeat request method and mixed automatic repeat request system for multi-input and multi-output system
  • Mixed automatic repeat request method and mixed automatic repeat request system for multi-input and multi-output system
  • Mixed automatic repeat request method and mixed automatic repeat request system for multi-input and multi-output system

Examples

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example 1

[0073] Figure 5 is the complete spatial multiplexing time-cycle antenna mapping scheme according to Example 1 of the present invention. Such as Figure 5 As shown, the transmitter is configured with four transmit antennas Tx1, Tx2, Tx3, and Tx4, and at the same time transmits data in a complete spatial multiplexing manner, that is, the MIMO transmission matrix is S 1 S 2 S 3 S 4 , When the HARQ structure is transmitted for the first time, the sender selects the optional complete mapping method 1 from all four optional complete mapping methods, and transmits the data symbol s on...

example 2

[0076] Image 6 is the loop antenna selection mapping scheme according to Example 2 of the present invention. Such as Image 6 As shown, the transmitting end is configured with 4 transmitting antennas Tx1, Tx2, Tx3, and Tx4, and at the same time transmits data using spatial multiplexing based on antenna selection, assuming that 3 of the antennas are selected each time.

[0077] During the first HARQ transmission, the sender selects the optional partial mapping method 1 from all four optional partial mapping methods, and chooses to transmit the data symbol s on the antennas Tx1, Tx2, and Tx3 respectively. 1 , s 2 , s 3 (Unit 601).

[0078] When the first transmission error needs to be retransmitted for the first time, the sender reselects the optional partial mapping method 2 from all four optional partial mapping methods, and modifies the mapping relationship between the transmission data symbol and the antenna to: antenna Tx1 , Tx2, and Tx4 respectively transmit data sym...

example 3

[0082] Figure 7 is a cyclic antenna mapping scheme corresponding to space diversity according to Example 3 of the present invention. Such as Figure 7 As shown, the transmitting end is configured with four transmitting antennas Tx1, Tx2, Tx3, and Tx4, and transmits data in a manner based on complete space diversity.

[0083] When transmitting for the first time, the sender selects optional partial mapping method 1 from all 6 optional partial mapping methods, and uses the corresponding matrix of 701 units. When retransmitting for the first time, the sending end selects from all 6 optional partial mapping methods Optional partial mapping method 2, using the corresponding matrix of 702 units, when retransmitting for the second time, the sender selects optional partial mapping method 3 from all 6 optional partial mapping methods, using the corresponding matrix of 703 units, and retransmits for the third time When transmitting, the sending end selects optional partial mapping me...

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Abstract

The invention discloses a mixed automatic repeat request method and a mixed automatic repeat request system for a multi-input and multi-output system, wherein the method comprises that: in data transmission, a sending end selects a mapping mode from a plurality of preset mapping modes; a data stream to be sent is mapped to one part and the whole of a plurality of transmitting antennas and sent toa receiving end, wherein the mapping modes comprise a partial mapping mode and a total mapping mode; under the condition of failed transmission, data retransmission is carried out, the sending end reselects a mapping mode from the plurality of the mapping modes; the data stream is mapped to one part or the whole of the plurality of the transmitting antennas; and the data stream is retransmitted to the receiving end. Through the change of the mapping relation between the retransmitted data and the antennas, the method and the system can improve the transmission reliability of HARQ technology, reduce bit error rate and improve the efficiency of data transmission.

Description

technical field [0001] The present invention belongs to the field of wireless communication, and in particular relates to a hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ for short) method used in a Multiple-Input Multiple-Output (MIMO) system and system. Background technique [0002] Many new technologies have appeared in the field of wireless communication, such as Orthogonal Frequency Division Multiplexing (OFDM for short) and MIMO. Business needs. MIMO technology is a major breakthrough in multi-antenna technology in the field of wireless communication. The MIMO technology can increase the system capacity without increasing the spectrum resources, so that the capacity can be expanded without increasing the carrier frequency and the base station. Using MIMO technology can also obtain various diversity gains to improve the quality of the received signal, reduce the bit error rate, and thus improve the stability of the communication system. There...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L1/06
Inventor 刘向宇朱登魁刘颖关艳峰鲁照华
Owner 盐城抱璞文化传媒有限公司
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