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Method and system for sending positioning reference signal

A technology of positioning reference signal and transmission method, applied in the field of positioning reference signal transmission method and system, can solve problems such as UE positioning performance limitation

Active Publication Date: 2009-12-30
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The base station needs to measure the position of the terminal (UE) in the cell, so as to effectively configure and schedule the UE. Currently, CRS is used to measure the UE, but due to the semi-static power configuration of the CRS, the positioning performance of the UE will be affected. limit

Method used

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  • Method and system for sending positioning reference signal
  • Method and system for sending positioning reference signal
  • Method and system for sending positioning reference signal

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Embodiment Construction

[0105] The technical solutions of the present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0106] Figure 6 It is a flowchart of a PRS sending method according to an embodiment of the present invention. Such as Figure 6 As shown, the sending method of the PRS in the embodiment of the present invention includes:

[0107] Step S101, obtain the currently required 2×N RB PRS The PRS sequence of , expressed in units of resource blocks; there are two specific implementation methods, as follows:

[0108] method one

[0109] Directly generate the 2×N currently needed RB PRS PRS sequence (m'), where N RBPRS is the PRS bandwidth configured by high-level signaling, so that

[0110] r l , n s ( m ′ ) = ...

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Abstract

The invention discloses a method and a system for sending a positioning reference signal. The system comprises a PRS sequence obtaining unit for obtaining a 2*NRB<PRS> PRS sequence needed currently, a positioning unit for determining the position of the PRS sequence in a physical resource block and a sending unit for sending the PRS sequence in the position, wherein the obtaining unit comprises a PRS sequence generation unit for generating a PRS sequence with length of 2*NRB<max, DL>, and an interception unit for intercepting the 2*NRB<PRS> PRS sequence from the PRS sequence with length of 2*NRB<max, DL>. Therefore, the sending method and the sending system can directly intercept the PRS sequence needed currently or firstly generate the PRS sequence with the maximal length and then intercept the PRS sequence needed currently, thereby ensuring that the PRS sequence can be effectively obtained in various scenes and the positioning function of the PRS can be realized.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and system for sending positioning reference signals. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) technology is essentially a multi-carrier modulation communication technology, which is one of the core technologies in the fourth generation mobile communication. In the frequency domain, the OFDM multipath channel exhibits frequency-selective fading characteristics. In order to overcome this fading, the channel is divided into multiple sub-channels in the frequency domain. The spectral characteristics of each sub-channel are approximately flat, and each sub-channel of OFDM The channels are orthogonal to each other, so the spectrums of the sub-channels are allowed to overlap each other, so that the spectrum resources can be utilized to the greatest extent. [0003] The Long Term Evolution (CLTE) system is an important plan of ...

Claims

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Application Information

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IPC IPC(8): H04W4/02H04W4/12H04L27/26
CPCH04L5/0048G01S1/20H04L27/2613H04W4/02H04W64/00H04L5/005H04L5/0091
Inventor 戴博郁光辉李卫军杨勋
Owner ZTE CORP
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