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A retransmission scheduling method and base station

A scheduling method and retransmission technology, applied in the field of communications, can solve problems such as the impact of uplink capacity

Active Publication Date: 2021-01-29
SHANGHAI HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing technology reduces the terminal uplink packet loss rate by occupying additional RB resources, and retransmission expansion of RB will increase the RB occupancy rate, which has a negative impact on the uplink capacity

Method used

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  • A retransmission scheduling method and base station
  • A retransmission scheduling method and base station
  • A retransmission scheduling method and base station

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Embodiment Construction

[0042] Embodiments of the present application provide a retransmission scheduling method and a base station, which are used to reduce uplink load and improve the utilization efficiency of time-frequency resources.

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0044] Under the current uplink HARQ mechanism, when the base station fails to decode the physical uplink shared channel (PUSCH) data sent by the terminal, if the retransmission data is sent according to the same time-frequency resource and the same modulation and coding scheme (Modu...

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Abstract

The embodiment of the present application discloses a retransmission scheduling method and a base station, which are used to reduce uplink load and improve the utilization efficiency of time-frequency resources. The method in the embodiment of the present application includes: calculating the hybrid automatic retransmission HARQ redundancy of the transport block TB that fails to be decoded, and the TB is sent by the target terminal; determining the target resource block RB required for retransmission according to the HARQ redundancy determine the target modulation and coding strategy MCS for retransmission according to the target RB number; send retransmission scheduling resource information to the target terminal, and the retransmission scheduling resource information carries the target RB number and the target MCS.

Description

technical field [0001] The present application relates to the communication field, and in particular to a retransmission scheduling method and a base station. Background technique [0002] The wireless communication adopts a hybrid automatic repeat request (HARQ) technology to ensure the reliability of data transmission at the physical layer. HARQ technology is divided into synchronous / asynchronous mode in terms of timing, and non-adaptive / adaptive mode in terms of time-frequency resource allocation. Synchronous non-adaptive HARQ is commonly used in LTE uplink, that is, retransmission occurs at a fixed time, and the time-frequency resources, modulation and coding methods are consistent with the previous transmission; LTE uplink also supports synchronous adaptive HARQ, by adjusting The size and location of the time-frequency resources, as well as the retransmission modulation and coding method, achieve some special purposes (such as reducing the packet loss rate, solving the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L1/00H04L5/00H04W72/12
CPCH04L1/0003H04L1/1812H04L5/0053H04W72/23
Inventor 陈拓
Owner SHANGHAI HUAWEI TECH CO LTD