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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: 2015-09-23
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 method for configuring TDD HARQ UL Un subframes to figure 1 The shown TDDHARQ configuration 2 is an example. figure 1 Among them, subframes 0, 1, 5, and 6 need to transmit some special signaling, so they can only be used for Uu interfaces. 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 the 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 the DL subframe in the original LTE protocol 9, 0, 1, 3 ACK / NACK signaling, and scheduled by DL subframe 3. If UL subframes 2 and 7 are applied to the Uu interface, then there will be no UL subframe available for the Un interface; if UL subframe 2 or 7 is applied to the Un interface, then DL subframes 0, 1 or 5, 6 will lack feedback The UL subframe of its ACK / NACK signaling. Therefore, in the present invention, the DL subframe is conf...

Embodiment 2

[0039] In this embodiment, according to the configuration method described in Embodiment 1, DL subframe 3 is configured as a new type of UL Un subframe. A schematic diagram of the new type of UL Un subframe is as follows: image 3 As 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 present invention belongs to the field of mobile communication technology, and relates to a new type of TDD HARQ UL Un subframe configuration method. Background technique [0002] Nowadays, the mobile communication technology with the greatest development potential and the broadest market prospect in the communication field has ushered in the 3G era. However, in order to solve the problems of tight spectrum resources, limited system capacity, and increasing user (User Equipment, UE) demand, the International Telecommunication Union (ITU) launched the fourth-generation mobile communication system IMT-Advanced in February 2008. jobs. In response to the ITU-R IMT-Advanced technical solicitation, 3GPP, which has formulated the industry’s most influential 3G UMTS technical standard, was unwilling to be lonely, and launched the Long Term Evolution-Advanced (Long Term Evolution-Advanced, LTE-A) standard process. [0003] A feature of the LTE-A system is the i...

Claims

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Application Information

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