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Hybrid Automatic Repeat Request Feedback and Retransmission Method, Receiver, and Transmitter

A hybrid automatic retransmission and transmitter technology, applied in the field of wireless communication, can solve the problem of increasing the amount of error retransmission and error retransmission data, and achieve the goal of reducing the amount of retransmitted data, reducing the amount of data, and balancing the overall decoding error probability. Effect

Active Publication Date: 2022-04-15
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although ACK / NACK bundling can significantly save the resources required for feedback, it also increases the probability of error retransmission and the amount of error retransmission data

Method used

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  • Hybrid Automatic Repeat Request Feedback and Retransmission Method, Receiver, and Transmitter
  • Hybrid Automatic Repeat Request Feedback and Retransmission Method, Receiver, and Transmitter
  • Hybrid Automatic Repeat Request Feedback and Retransmission Method, Receiver, and Transmitter

Examples

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Embodiment 1

[0069] Hereinafter, taking the uplink feedback of downlink transmission (the receiver is a terminal, and the transmitter is a base station) as an example, an embodiment of the HARQ feedback method of the present invention is given. It should be noted that the HARQ feedback method of the present invention can also be used in the downlink feedback scenario of uplink transmission (the receiver is a base station, and the transmitter is a terminal).

[0070] In step 201, the terminal acquires related parameter information of the bundled group carried by the received public signaling or user-specific signaling, and / or the terminal reads the pre-stored agreed rules with the base station, and the terminal according to the related parameters of the bundled group and / or Agreed rules determine how data units are bundled and grouped.

[0071] The agreed rules with the base station may be pre-stored in the terminal, and the terminal acquires the agreed rules by reading. The terminal can o...

Embodiment 2

[0105] The following describes an embodiment of the HARQ retransmission method of the present invention by taking the error retransmission of downlink transmission (the transmitter is the base station, and the receiver is the terminal) as an example. It should be noted that the HARQ retransmission method of the present invention can also be used in an error retransmission scenario of uplink transmission (the transmitter is a terminal, and the receiver is a base station).

[0106] In step 401, the base station acquires related parameter information of the bundled group carried by the received public signaling or user-specific signaling, and / or the base station reads the pre-stored agreed rules with the terminal, and the base station according to the related parameters of the bundled group and / or Agreed rules determine how data units are bundled and grouped.

[0107] The agreed rules with the terminal may be pre-stored in the base station, and the base station obtains the agreed...

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Abstract

The invention discloses a hybrid automatic repeat request feedback method, which includes: receiving a data unit sent by a transmitter; bundling multiple data units into groups, at least one data unit is bundled into multiple groups; The decoding result of the data unit determines the ACK / NACK information of the corresponding group; and feeds back the ACK / NACK information of multiple groups to the transmitter. Compared with the prior art, in the present invention, the receiver groups the data units in an overlapping and bundling manner, and uses the group as the unit of feedback ACK / NACK information, which reduces the feedback overhead of HARQ feedback and significantly reduces the error rate of the HARQ transmitter. The amount of transmitted data improves the efficiency of error retransmission. In addition, the invention also discloses a hybrid automatic repeat request retransmission method.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more specifically, to a method for hybrid automatic repeat request feedback and retransmission, a receiver, and a transmitter. Background technique [0002] LTE (Long Term Evolution, long-term evolution) technology supports FDD (Frequency Division Duplex, frequency division duplex) and TDD (Time Division Duplex, time division duplex) two duplex modes. The frame structure of the two duplex modes is a frame structure in units of radio frames, the length of each radio frame is 10 ms (milliseconds), and each radio frame includes 10 subframes with a length of 1 ms. For TDD, each subframe in a radio frame is configured for uplink or downlink transmission is determined by the uplink and downlink configuration parameters of the base station, and the subframes used for uplink and downlink in each radio frame are fixed; for FDD In other words, uplink transmission and downlink tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18
CPCH04L1/1812H04L1/1829H04L1/1867H04L1/1607H04L1/18H04L1/1854H04L1/1621H04L1/1819H04L5/0055H04L2001/125
Inventor 苏笛钱辰付景兴喻斌熊琦张英杰
Owner BEIJING SAMSUNG TELECOM R&D CENT