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Positioning information transmitting method and device

A technology for positioning information and sending methods, which is applied in the field of communication, can solve problems affecting system performance, positioning subframe conflicts, conflicts, etc., and achieve the effect of no impact on system performance

Active Publication Date: 2010-12-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the present invention, the inventors found that the defect of the prior art is that: in the LTE system, since the positioning subframes are continuously accumulated in time, the positioning subframes may conflict with subframes for other purposes, such as , may conflict with subframes containing the Synchronization Channel (SCH: Synchronization Channel) and / or Broadcast Channel (BCH: Broadcast Channel), thereby affecting system performance

Method used

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  • Positioning information transmitting method and device
  • Positioning information transmitting method and device
  • Positioning information transmitting method and device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0016] An embodiment of the present invention provides a method for sending positioning information, such as figure 1 As shown, the method includes:

[0017] Step 101, determining a positioning subframe for sending a positioning reference signal;

[0018] Step 102: Send a positioning reference signal according to the positioning subframe.

[0019] In this embodiment, the positioning subframe may be a normal subframe or a subframe of a Multicast Broadcast Single Frequency Network (MBSFN: Multicast Broadcast Single Frequency Network) or a persistently scheduled Physical Downlink Shared Channel (PDSCH: Physical Downlink Shared Channel). The subframes, but not limited to the above subframes, may be determined according to actual conditions; wherein, the normal subframes may be common data transmission subframes.

[0020] In the LTE system, due to the continuous accumulation of positioning subframes in time, for example, the number of continuously accumulated subframes may be 1, ...

Embodiment 2

[0022] An embodiment of the present invention provides a positioning information sending method, the following in conjunction with the attached figure 2 And attached image 3 1. The method is described in detail by taking positioning a subframe as a normal subframe as an example.

[0023] In this embodiment, when it is determined that the positioning subframe is a subframe containing SCH and / or BCH, the following method can be adopted: no positioning reference signal (PRS: Positioning Reference) is sent on the subframe containing SCH and / or BCH Signal). In this way, the operation is simple, and the detection performance of the SCH and / or BCH will not be affected.

[0024] In this embodiment, when no positioning reference signal is sent on a subframe containing SCH and / or BCH, the next non-conflicting subframe (for example, a subframe not containing SCH and / or BCH) may also be used to Send the positioning reference signal. In this way, the positioning reference signal will...

Embodiment 3

[0033] An embodiment of the present invention provides a method for sending positioning information, and the method will be described in detail below taking the positioning subframe as an MBSFN subframe as an example.

[0034] Those skilled in the art know that in Frequency Division Duplex (FDD, Frequency Division Duplex) mode, MBSFN subframes can only use subframe 1, subframe 2, subframe 3, subframe 6, subframe 7 and subframe 8; In Time Division Duplex (TDD: Time Division Duplex) mode, the MBSFN subframe can only use subframe 3, subframe 4, subframe 7, subframe 8 and subframe 9. Therefore, if an MBSFN subframe is selected as the positioning subframe, and the positioning subframe needs to be continuously accumulated in time, it may conflict with a subframe that has been used for other purposes (or called a non-MBSFN subframe). For example, when the number of continuously accumulated positioning subframes is required to be 4 in FDD mode, since only 3 consecutive MBSFN subframes...

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Abstract

The embodiment of the invention provides a positioning information transmitting method and a positioning information transmitting device. The positioning information transmitting method comprises the following steps of: determining a positioning subframe which transmits a positioning reference signal; and transmitting the positioning reference signal according to the positioning subframe. Through the method, the positioning reference signal is transmitted according to the positioning subframe, the normal transmission of SCH and / or BCH can be ensured, and the transmission of the positioning subframe has no influence on the detection performance of the SCH and / or BCH.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a positioning information sending method and device thereof. Background technique [0002] In the Long Term Evolution (LTE: Long Term Evolution) system, the LTE R9 version uses a positioning technology based on an Observed Time Difference of Arrival (OTDOA: Observed Time Difference Of Arrival) to determine the location of a user equipment (UE: User Equipment). The principle of this positioning technology is: when there are three or more base stations in the system, the position of the UE can be determined according to the arrival time difference of the downlink transmission signals of different base stations, and the more base stations exist in the system, the more accurate the position of the UE can be determined . [0003] In this way, in the LTE system, one of the main factors affecting the positioning accuracy is the interception capability of the user equipme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W8/08H04W64/00H04W72/12
CPCH04W72/00H04W48/08G01S5/0226G01S5/0009H04W4/06G01S5/02H04W64/00H04W74/00H04W72/1242H04L67/18H04L67/52H04W72/569
Inventor 陈实李元杰
Owner HUAWEI TECH CO LTD
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