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Harq system and method for license-free uplink transmission

An authorization-free, scheduling-authorized technology, applied in transmission systems, digital transmission systems, error prevention, etc., can solve problems such as undecodeable data

Active Publication Date: 2020-11-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In some cases, when the UE sends a license-free uplink transmission, the base station may not be able to decode the data in the uplink transmission

Method used

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  • Harq system and method for license-free uplink transmission
  • Harq system and method for license-free uplink transmission
  • Harq system and method for license-free uplink transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0191] Embodiment 1: A method performed by a base station, comprising: receiving an unlicensed uplink transmission, the unlicensed uplink transmission uses an MA signature, and the unlicensed uplink transmission carries encoded data with RV; detecting the unlicensed uplink an MA signature for uplink transmission; and identifying an RV of encoded data based on the MA signature.

Embodiment 2

[0192] Embodiment 2: The method according to Embodiment 1, wherein the authorization-free uplink transmission is the first authorization-free uplink transmission, the MA signature is the first MA signature, and the RV is the first RV, and the method further includes Including: based on at least one of the first MA signature and the uplink resource used by the first license-free uplink transmission, identifying that the first license-free uplink transmission is the initial transmission of the encoded data; receiving using the first A second unlicensed uplink transmission with a second MA signature and a second RV; identifying the second unlicensed based on at least one of the second MA signature and uplink resources used by the second unlicensed uplink transmission The uplink transmission is a retransmission of said encoded data; an attempt is made to decode the encoded data using the initial transmission and retransmission of the encoded data, the first RV and the second RV.

Embodiment 3

[0193] Embodiment 3: The method of Embodiment 2, wherein the second RV is the same as the first RV.

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Abstract

Systems and methods are disclosed for performing Hybrid Automatic Repeat Request (HARQ) for unlicensed uplink transmissions. Some of the systems and methods disclosed herein may address issues such as how to perform acknowledgements (ACKs) and / or negative acknowledgements (NACKs), how to determine and notify retransmission timing, how to determine transmission / retransmission attempts and redundancy versions (RVs) and / or The problem of how to perform HARQ combining.

Description

[0001] priority claim [0002] This application claims U.S. Common Patent Application No. 15 / 088,607, filed April 1, 2016, entitled "System and Method for Pilot-Assisted License-Exempt Uplink Transmission Identification," filed November 3, 2016 U.S. Provisional Patent Application No. 62 / 416,939, entitled "HARQ System and Method for License-Exempt Uplink Transmission", filed on November 11, 2016, No. 62 / 421,087, entitled "Using HARQ System and Method for License-Exempt Uplink Transmission", U.S. Provisional Patent Application No. 62 / 459,949, filed February 16, 2017, entitled "HARQ Signaling for License-Exempt Uplink Transmission" patent application, and priority to U.S. Common Patent Application No. 15 / 470,455, filed March 27, 2017, entitled "HARQ System and Method for License-Exempt Uplink Transmission," content of all five applications Incorporated herein by reference. technical field [0003] The present invention relates to license-free uplink transmission. Background t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/08
CPCH04W48/08H04L1/0083H04L1/1819H04L1/1845H04L1/1685
Inventor 曹昱张立清
Owner HUAWEI TECH CO LTD
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