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A transmission method and device based on channel activation detection

A channel activation and transmission method technology, which is applied in the field of uplink hybrid automatic retransmission HARQ processing, can solve problems such as HARQ failure and packet loss, and achieve the effect of reducing packet errors and improving resource utilization

Active Publication Date: 2018-10-19
ZTE CORP
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a transmission method and device based on channel activation detection, which solves the problem of HARQ failure caused by UE missing DCI0 in the prior art, which in turn leads to packet loss

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  • A transmission method and device based on channel activation detection
  • A transmission method and device based on channel activation detection
  • A transmission method and device based on channel activation detection

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Embodiment Construction

[0043] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0044] LTE uplink HARQ is to solve the uplink transmission error packet. The uplink transmission needs to rely on DCI0 to indicate the scheduling resources to the UE. However, if there is significant interference in the downlink channel, or for some other reasons, the UE loses the DCI0 issued by the base station. It will eventually lead to uplink HARQ failure and cause packet error. In the present invention, by performing DCI0 activation detection on the base station side, it is determined whether the UE loses DCI0. If the DCI0 is lost, the base station side maintains the RV value according to certain rules. If it is not lost, update the RV value. HARQ retransmit...

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Abstract

Disclosed in the present invention are a transmission method and apparatus based on channel activation detection, relating to the field of communications. The method comprises: a base station issuing to a terminal scheduling information containing scheduling resource indication, for enabling the terminal to send service data; the base station receiving the service data uploaded by the terminal; the base station verifying the service data; in the event of a verification error, the base station judging whether the scheduling information is lost by using the service data; and the base station performing HAQR (Hybrid Automatic Repeat request) mode decision processing and HARQ retransmission processing by using a judgment result, for controlling the terminal to perform HARQ retransmission according to a processing result. By adopting the transmission method and apparatus disclosed by the invention, Long Term Evolution (LTE) uplink packet error can be reduced, and the resource utilization rate of a physical downlink control channel (PDCCH) can be effectively improved.

Description

Technical field [0001] The present invention relates to the field of communications, in particular to the HARQ processing technology of uplink hybrid automatic retransmission in a long-term evolution LTE system. Background technique [0002] In the LTE system, in order to improve the system performance under limited coverage scenarios, HARQ is often used, and HARQ can be specifically divided into incremental redundancy (Incremental Redundancy, IR) adaptive mode and soft combining (Chase Combining, CC) mode and IR non-adaptive mode. [0003] For the CC mode, the characteristic is that the retransmitted data is exactly the same as the previously sent packet data, and there is only one redundant version. The receiving end softly combines the retransmitted data and the stored data for decoding. [0004] For the IR mode, the first new data transmission contains all the information. After the receiving end cyclic redundancy check (Cyclic Redundancy Check, CRC) error, the error packet is s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04W28/04
CPCH04W72/12H04L1/1812
Inventor 宁涛涛谷成金杨琼
Owner ZTE CORP
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