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Control channel design method

A design method and control channel technology, applied in wireless communication, network traffic/resource management, electrical components, etc., can solve the problems of high overhead and low system performance, and achieve the effect of reducing overhead and improving system performance

Inactive Publication Date: 2009-10-28
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Considering the problems of high overhead and low system performance in the current control channel design in the related art, the present invention is proposed. Therefore, the present invention aims to provide a control channel design method to solve the above problems

Method used

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Examples

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Embodiment 1

[0044] Embodiment 1: The SCI position is fixed and the control channel design method of this position is predetermined in the communication standard protocol

[0045] In this embodiment, among the radio resources included in the superframe, the position of the SCI in all superframes is fixed, and is fixed in the communication standard protocol. Such as Figure 4 As shown, in TDD mode, when the uplink / downlink ratio in a frame is 5:3 (5 downlink subframes, 3 uplink subframes), the position of SCI in the downlink subframe is fixed, respectively located in the 0th subframe and in the second subframe. The position of the subframe MAP in the scheduling area controlled by the SCI is dynamic, and the position, length, modulation and coding mode, and transmission mode of the MAP are indicated by the SCI.

[0046] When the SCI position is fixed, the terminal finds the comparison table of the SCI position in a specific scenario according to the corresponding protocol standard. The com...

Embodiment 2

[0049] Embodiment 2: The SCI position is fixed, and the control channel design indicated by the superframe header or other common control channels

[0050] In this embodiment, in the radio resources included in the superframe, the position of the SCI is fixed, and is fixed in the indication of the superframe header or other common control channels. For example, in TDD mode, when the uplink / downlink ratio in a frame is 5:3 (5 downlink subframes, 3 uplink subframes), the positions of the SCI subframes in the 4 frames are determined respectively, and the super Frame header indication. The positions in the downlink subframes are fixed, and are respectively located in the 0th subframe and the 2nd subframe. The position of the subframe MAP in the scheduling area controlled by the SCI is dynamic, and the position, length, modulation and coding mode, and transmission mode of the MAP are indicated by the SCI.

[0051] When the SCI position is fixed, the terminal finds the position of...

Embodiment 3

[0054] Embodiment 3: The control channel design method of dynamic SCI position

[0055] In this embodiment, in the radio resources included in the frame, the position of the SCI is not fixed, but dynamic, that is, its position is determined according to the scheduling needs of the base station. The position of the subframe MAP in the scheduling area controlled by the SCI is dynamic. The location, length and modulation and coding mode of the MAP are indicated by the SCI.

[0056] When the position of the SCI is dynamic, the terminal needs to monitor each position where the SCI may appear, and then judge whether there is an SCI, and determine the subframe MAP according to the SCI.

[0057] In addition, when the position of the SCI is dynamic, since the subframe MAP controlled by it is also dynamic, the base station can respond to the scheduling requirement in any subframe, thereby reducing the data transmission delay of the system. For example, when the base station analyzes t...

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Abstract

The invention discloses a control channel design method which comprises the following steps: setting one or a plurality of scheduling-based control instructions (SCI) in a superframe according to the scheduling of a base station, wherein each SCI controls a subframe or a subframe region which comprises a plurality of subframes in the current scheduling process of the base station, and each SCI carries control information which is used for controlling and indicating mapping signs; and setting one or a plurality of mapping signs in the subframe or the subframe region controlled by each SCI according to the control information in each SCI, wherein the mapping signs are used for indicating the resource allocation condition of one or a plurality of subframes. The invention realizes a new subframe-based control channel design method by adopting the technical scheme, thus the cost of a system for managing messages is reduced, and the performance of the system is improved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for designing a control channel in a wireless communication system using a base station to implement wireless resource scheduling. Background technique [0002] In OFDMA (Orthogonal Frequency Division Multiple Access, Orthogonal Frequency Division Multiple Access) wireless communication system, the base station refers to the equipment that provides services to the terminal. The base station communicates with the terminal through the uplink / downlink. The uplink refers to the direction from the terminal to the base station. Multiple terminals can simultaneously send data to the base station through the uplink, and can also receive data from the base station through the downlink at the same time. [0003] In addition, in an OFDMA wireless communication system, transmission data resources are composed of time-domain symbols and frequency-domain subcarriers to form two-...

Claims

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Application Information

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IPC IPC(8): H04W28/16H04W72/04
Inventor 康睿刘颖关艳峰鲁照华
Owner ZTE CORP
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