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A new tdd HARQ UL Un subframe configuration method

A configuration method and subframe configuration technology, applied in the field of mobile communication, can solve problems such as missing UL subframes, and achieve the effect of avoiding modification and good compatibility

Inactive Publication Date: 2011-12-07
SHANGHAI RES CENT FOR WIRELESS COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a new TDD HARQ UL Un subframe configuration method, which can solve the problem of missing UL subframes without changing the original LTE protocol at the Uu interface

Method used

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  • A new tdd HARQ UL Un subframe configuration method
  • A new tdd HARQ UL Un subframe configuration method
  • A new tdd HARQ UL Un subframe configuration method

Examples

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Embodiment 1

[0025] This embodiment provides a new TDD HARQ UL Un subframe configuration method, to figure 1 TDDHARQ configuration 2 is shown as an example. figure 1 Among them, subframes 0, 1, 5, and 6 need to transmit some special signaling, so they can only be used on the Uu interface. However, there are only two UL subframes 2 and 7 in this configuration. From figure 1 It can be seen that UL subframe 2 feeds back ACK / NACK signaling of DL subframes 4, 5, 6, and 8 in the original LTE protocol, and is scheduled by DL subframe 8; UL subframe 7 feeds back DL subframes in the original LTE protocol 9, ACK / NACK signaling of 0, 1, 3, and scheduled by DL subframe 3. If UL subframes 2 and 7 are applied to Uu interface, then Un interface will have no UL subframes available; if UL subframes 2 or 7 are applied to Un interface, then DL subframes 0, 1 or 5, 6 will lack feedback UL subframe for its ACK / NACK signaling. Therefore, in the present invention, the DL subframe is configured as a new type...

Embodiment 2

[0039] In this embodiment, the DL subframe 3 is configured as a new UL Un subframe according to the configuration method described in Embodiment 1. The schematic diagram of the new UL Un subframe is as follows image 3 Shown, where DL:UL=1:1.

Embodiment 3

[0041] The difference between this embodiment and the second embodiment is: DL:UL=2:1.

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Abstract

The present invention discloses a novel TDD HARQ UL Un subframe configuration method, which includes the following steps: step 1, select a DL subframe at the eNB side according to the minimum feedback delay principle, and place the selected DL subframe Configure it as a UL Un subframe; step 2, at the RN end, configure the DL subframe corresponding to the selected DL subframe as a UL Un subframe, which is used to replace the UL subframe to complete Un communication. In the present invention, the DL subframe is designed as a new type of UL Un subframe to replace the traditional TDD HARQ UL subframe, thereby solving the problem of lack of UL subframes in the Un interface in the LTE-A system, and avoiding the problem of the original LTE user protocol at the Uu interface. The modification made the original LTE users get good compatibility in the LTE-A relay system.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to a configuration method of a novel TDD HARQ UL Un subframe. Background technique [0002] The mobile communication technology with the greatest development potential and the broadest market prospect in today's communication field has ushered in the 3G era. However, in order to solve the problems of insufficient spectrum resources, limited system capacity, and increasing user (User Equipment, UE) demand, the International Telecommunication Union (ITU) launched a technical solicitation for the fourth-generation mobile communication system IMT-Advanced in February 2008. Work. In response to the ITU-R IMT-Advanced technical solicitation, 3GPP, which once formulated the industry's most influential 3G UMTS technical standard, launched Long Term Evolution-Advanced in March 2008. LTE-A) standard process. [0003] A characteristic of the LTE-A system is that a relay station (...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04L1/18
Inventor 杜婷杨旸朱元萍杨馨徐景
Owner SHANGHAI RES CENT FOR WIRELESS COMM