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Method for retransmitting data

A technology of retransmitting data and hybrid automatic retransmission, which is applied in the field of data retransmission, can solve problems such as HARQ process conflicts and inability to realize data retransmission, and achieve low-complexity effects

Active Publication Date: 2018-06-29
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is because, when the UE performs autonomous transmission, it has not performed signaling interaction with the base station, so the UE can only allocate a HARQ identity to itself, and this HARQ identity may have been allocated to the UE by the base station. It is used for scheduling transmission, but due to the processing delay, the UE does not know this situation, which causes conflicts between HARQ processes, resulting in the failure to achieve normal data retransmission

Method used

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  • Method for retransmitting data

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Embodiment Construction

[0033] In the following detailed description of the preferred embodiment, reference is made to the accompanying drawings which form a part hereof. The accompanying drawings show, by way of example, specific embodiments in which the invention can be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments in accordance with the invention. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. Accordingly, the following detailed description is not limiting, and the scope of the invention is defined by the appended claims.

[0034] Firstly, the present invention is applicable to a communication system where two uplink transmission modes coexist, autonomous transmission and scheduling-based transmission. Typically, it can work in the unlicensed frequency band of LAA, or work in the licensed frequency band of 5G new radio (new radio fo...

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Abstract

The invention relates to a method for retransmitting data in a wireless communication system, which comprises the steps of dividing all hybrid automatic repeat request processes in the wireless communication system into at least two groups, wherein the hybrid automatic repeat request process in one group is only used for autonomous transmission, and the hybrid automatic repeat request process in the other group is only used for scheduling-based transmission.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a data retransmission method. Background technique [0002] In the field of wireless communication, with the further growth of wireless services, the requirements for the capacity and frequency band of the wireless communication system are also increased. In this case, the frequency band resources of the LTE system appear to be relatively insufficient. Therefore, one of the recent research hotspots in the LTE field is how to use resources in other frequency bands to offload high-incidence data services. Typically, the offloading of data services by using the frequency band of the wireless local area network WLAN / WiFi is being extensively studied by the industry. [0003] The 3GPP standardization organization has proposed several methods for utilizing the WLAN frequency band in the LTE communication system, among which a method called Licensed Assisted Access (LAA...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
CPCH04L1/1812
Inventor 陶涛刘建国骆喆沈钢
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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