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Method and system for transmitting uplink demodulation reference signal

A technology for demodulating reference signals and signals, applied in the field of transmitting uplink demodulation reference signals, can solve the problems of high DMRS overhead, high uplink DMRS overhead, low efficiency, etc., and achieve the effect of improving coverage capacity and reducing overhead

Active Publication Date: 2014-07-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the introduction of LTE technology, since the LTE system is mainly used in a large coverage area (500 meters to 100 kilometers), and a variety of channels (speeds can range from 3 kilometers per hour to 350 kilometers per hour, the channel delay never exceeds one microseconds to more than a dozen microseconds) environment is not suitable for the application environment of data services covered by existing small cells. Therefore, when it carries high data rate IP data packet services, if the uplink DMRS of the existing LTE system is still used The transmission method will bring the problems of excessive DMRS overhead, low efficiency and high cost
[0006] The uplink DMRS transmission method of the existing LTE system is that each time slot or subframe needs to send an uplink DMRS signal, which leads to the problems of high uplink DMRS overhead, low efficiency and high cost in a small cell coverage environment

Method used

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  • Method and system for transmitting uplink demodulation reference signal

Examples

Experimental program
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Effect test

Embodiment 1

[0066] Such as image 3 As shown, it is a schematic diagram of the method for transmitting uplink DMRS in Embodiment 1; wherein, slanted lines indicate the transmitting position of the uplink DMRS, and non-oblique lines indicate the transmitting position of the uplink data.

[0067] Assume normal CP length, and the transmission time windows are subframe 1 and subframe 2.

[0068] Wherein, the transmission time window refers to consecutive subframes allocated by the network side to the user side.

[0069] The transmission position of the uplink DMRS signal can be determined in two ways, including:

[0070] The network side and the user have pre-negotiated the transmission position of the uplink DMRS signal, and each time the user obtains the transmission position, it can be directly determined according to the negotiated result; or,

[0071] The uplink DMRS signal transmission position is determined according to the transmission position indication information on the network ...

Embodiment 2

[0091] Such as Figure 4 As shown, it is a schematic diagram of the method for transmitting uplink DMRS according to the second embodiment; wherein, slanted lines represent uplink DMRS transmission positions, and non-twill lines represent uplink data transmission positions.

[0092] Assume normal CP length, and the transmission time windows are subframe 1, subframe 2 and subframe 3.

[0093] Wherein, the transmission time window refers to consecutive subframes allocated by the network side to the user side.

[0094] The transmission position of the uplink DMRS signal can be determined in two ways, including:

[0095] The network side and the user have pre-negotiated the transmission position of the uplink DMRS signal, and each time the user obtains the transmission position, it can be directly determined according to the negotiated result; or,

[0096] The uplink DMRS signal transmission position is determined according to the transmission position indication information on ...

Embodiment 3

[0116] Such as Figure 5 As shown, it is a schematic diagram of the method for transmitting uplink DMRS according to the third embodiment; wherein, oblique lines indicate the transmitting position of the uplink DMRS, and non-oblique lines indicate the transmitting position of the uplink data.

[0117] Assume normal CP length, and the transmission time windows are subframe 1, subframe 2 and subframe 3.

[0118] Wherein, the transmission time window refers to consecutive subframes allocated by the network side to the user side.

[0119] The transmission position of the uplink DMRS signal can be determined in two ways, including:

[0120] The network side and the user have pre-negotiated the transmission position of the uplink DMRS signal, and each time the user obtains the transmission position, it can be directly determined according to the negotiated result; or,

[0121] The uplink DMRS signal transmission position is determined according to the transmission position indicat...

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Abstract

The invention provides a method and a system for transmitting an uplink demodulation reference signal (DMRS). The method comprises the steps of acquiring a transmitting position of the uplink DMRS, and determining an OCC (orthogonal covering code) relevant to the uplink DMRS according to network-side OCC indicating information; and transmitting the uplink DMRS according to the transmitting position and the OCC.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and system for transmitting an uplink demodulation reference signal. Background technique [0002] With the popularity of mobile Internet and smart phones, the demand for mobile data traffic is increasing rapidly. In the next ten years, the mobile data business volume will double every year, and will increase by a thousand times in ten years. The proportion of data services in the operator's network is gradually increasing, which affects traditional carrier-class services. However, because data services are charged according to traffic, its profit growth rate is not directly proportional to traffic load. In addition, the rapid growth of data services poses severe challenges to the transmission capabilities of mobile communication networks. Most mobile data services mainly occur in small cells (including indoor and hotspot environments), which are embodied ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/06H04L27/26
CPCH04L1/0053
Inventor 陈宪明王瑜新关艳峰罗薇李书鹏
Owner ZTE CORP
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