Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for determining transmission timing of relay link downlink feedback information

A relay link and feedback information technology, applied in the field of communication, can solve the problem that the reliability of the service data transmission between the base station and the relay station cannot be guaranteed, and achieve the effect of avoiding the reduction of transmission efficiency, ensuring backward compatibility, and avoiding influence.

Inactive Publication Date: 2016-04-13
ZTE CORP
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The main purpose of the present invention is to provide a method and device for determining the transmission timing of relay link downlink feedback information in TDD LTE-A, to at least solve the problem that there is no solution in the above-mentioned related technologies that can ensure the correct transmission of relay link downlink ACK / NACK feedback information , so that the reliability of service data transmission between the base station and the relay station cannot be guaranteed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for determining transmission timing of relay link downlink feedback information
  • Method and device for determining transmission timing of relay link downlink feedback information
  • Method and device for determining transmission timing of relay link downlink feedback information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Embodiment 1: Subframe uplink and downlink configuration is subframe uplink and downlink configuration 1

[0078]Under subframe uplink and downlink configuration 1, due to the limitation of MBSFN subframe configuration, only downlink subframes 4 and 9 can be configured as downlink relay subframes, and subframes 2, 3, 7 and 8 can be configured as uplink relay subframes . If subframe 2 is configured as an uplink relay subframe, then subframe 9 satisfies the downlink delay relationship of uplink service transmission, but the next retransmission after subframe 9 feedback information transmission can only be in subframe 2 of the next radio frame For transmission, the equivalent feedback delay is 13ms, that is, the feedback delay is too large. Therefore, the preferred subframe 2 is not configured as an uplink relay subframe. Similarly, it can be obtained that subframe 7 is also not configured as an uplink relay subframe. In this way, for 3, 4, 8, and 9 that can be configur...

Embodiment 2

[0084] Embodiment 2: Subframe uplink and downlink configuration is subframe uplink and downlink configuration 2

[0085] In subframe uplink and downlink configuration 2, downlink subframes 3, 4, 8 and 9 may be configured as downlink relay subframes, and subframes 2 and 7 may be configured as uplink relay subframes. If subframe 2 is configured as an uplink relay subframe, then subframes 8 and 9 meet the downlink delay relationship of uplink service transmission, but the next retransmission after subframe 9 feedback information transmission can only be performed in the subframe of the next radio frame. Frame 2 transmission is equivalent to a feedback delay of 13ms, that is, the feedback delay is too large. Therefore, the preferred downlink feedback information for uplink service transmission in subframe 2 is transmitted in subframe 8. Similarly, it can be obtained that the downlink feedback information of the uplink service transmission in subframe 7 is preferably transmitted i...

Embodiment 3

[0091] Embodiment 3: Subframe uplink and downlink configuration is subframe uplink and downlink configuration 3

[0092] In subframe uplink and downlink configuration 3, downlink subframes 7, 8 and 9 may be configured as downlink relay subframes, and subframes 2, 3 and 4 may be configured as uplink relay subframes. According to the above-mentioned analysis of subframe uplink and downlink configuration 1 and configuration 2, for subframe uplink and downlink configuration 3, the corresponding relationship between relay subframe configurations of different proportions and corresponding downlink feedback information transmission timing can also be obtained, which can be summarized as follows: When subframe configuration When the subframe configuration set includes subframes 2 and 8, the feedback information for relay link uplink service data transmission in subframe 2 is transmitted in subframe 8 of the current radio frame; when the subframe configuration set includes subframes 3 a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a relay link downlink feedback information transmission sequence determination method in a TDD LTE-A (time division dual long term evolution-advanced) system and an apparatus thereof. The method comprises the following steps: according to a relay subframe configuration set under a subframe uplink-downlink configuration in the TDD LTE-A system, determining relay link downlink feedback information transmission sequence, wherein, the sequence refers to sequential relation of relay link uplink service data transmission and corresponding downlink feedback information transmission. By employing the method, correct transmission of relay link downlink ACK / NACK feedback information can be ensured, and then reliability of service data transmission between a base station and a relay station is ensured.

Description

technical field [0001] The present invention relates to the field of communication, in particular to a method and device for determining the transmission timing of relay link downlink feedback information in a Time Division Duplex Advanced Long Term Evolution system TDD LTE-A. Background technique [0002] The development requirement of mobile communication is to support higher transmission rate, better signal coverage and higher resource utilization. Relay (Relay) technology can increase coverage and balance, increase cell throughput, and the relay station has a relatively small configuration cost compared to the base station, so the relay is regarded as an evolution system of Long Term Evolution (LTE, LongTermEvolution)—— A key technology in a long-term evolution-advanced (LTE-A, LTE-Advanced) system. [0003] In a Time Division Duplex (TDD, TimeDivisionDual) LTE system, frequency resources are divided in units of frames in time. LTE here usually refers to the two protoco...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04L1/18H04B7/26
Inventor 吴栓栓毕峰杨瑾袁明梁枫
Owner ZTE CORP