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Methods and apparatuses for controlling timing of feedback transmissions

A timing and retransmission technology, applied in transmission systems, digital transmission systems, error prevention/detection using return channels, etc., can solve the problem of underutilized UE power consumption of channels, and achieve the effect of optimizing power saving

Active Publication Date: 2021-03-09
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Therefore, if feedback is provided quickly, there is a risk that the channel is underutilized and UE power consumption increases

Method used

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  • Methods and apparatuses for controlling timing of feedback transmissions
  • Methods and apparatuses for controlling timing of feedback transmissions
  • Methods and apparatuses for controlling timing of feedback transmissions

Examples

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Embodiment Construction

[0040] A communication system in which embodiments herein are applied may use a retransmission mechanism in order to ensure that the data stream is accurately delivered to the user regardless of errors that may occur during transmission. Examples of these retransmission mechanisms may be ARQ and / or HARQ as defined in 3GPP for UMTS and / or LTE.

[0041]A feature introduced by the frame structure outlined above is the ability to send retransmission feedback by a receiving device such that before a certain subframe ends or times out, the sending device can receive retransmissions related to data packets sent in that subframe feedback. Frame structures that provide the possibility for this feedback may eg for TDD require duplex direction switching in each subframe and thus introduce a corresponding guard period overhead in each subframe. This would imply an underutilization of the communication link corresponding to the guard period of each subframe. Also, for FDD as mentioned be...

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Abstract

There is disclosed a method for controlling the timing of feedback transmissions by a communication device (80) communicating over a communication link (70), wherein the communication link supports aretransmission scheme. The method comprises transmitting (42) a feedback timing indicator, FTI, wherein the indicator is selected from a set of indicators.

Description

[0001] This application is a divisional application of Chinese patent application CN201580083232.0. The international filing date of the original application is October 21, 2015, the priority date is September 21, 2015, and the date of entering the Chinese national phase is March 2018. On the 20th, the title of the invention is "Method and Apparatus for Controlling the Timing of Feedback Transmission". technical field [0002] Embodiments herein relate generally to telecommunications and / or data communications, and in particular, to methods for controlling feedback transmission when automatic repeat request (ARQ) and / or hybrid automatic repeat request (HARQ) retransmission mechanisms are used. Timing method and apparatus. Background technique [0003] Modern wireless communication systems use a retransmission mechanism commonly denoted Automatic Repeat Request (ARQ). In the ARQ mechanism, a CRC is appended to the data packets sent from the transmitter. The receiver decodes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/16
CPCH04L1/1685H04L1/1896H04L1/1887H04L1/1812
Inventor S·帕克瓦尔R·巴尔德梅尔
Owner TELEFON AB LM ERICSSON (PUBL)
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