Methods for transmitting and receiving location reference signals

Abstract

The invention provides a method for transmitting location reference signals and the method for receiving the location reference signals. The method for transmitting the location reference signals comprises that: a service base station transmits indication information to a mobile station (MS), wherein the indication information comprises the information of a superframe where a location based service (LBS) domain is; and each neighboring cell base station transmits the reference signals used for MS location measurement to the MS on the LBS domain, wherein the LBS domain refers to time-frequency resources which correspond to a preset frequency range and are occupied by all orthogonal frequency division multiplexing (OFDM) symbols of a downlink subframe in the superframe, or refers to the time-frequency resources occupied by a part of OFDM symbols of at least two downlink subframes in the superframe. The methods have the advantages of meeting the timing synchronization requirement of hybrid automatic retransmission requests (HARQ) at the same time of ensuring the location measurement accuracy.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method for transmitting and receiving positioning reference signals. Background technique [0002] The research on wireless positioning technology has been widely used in fields such as the initial automatic vehicle positioning system and subsequent public transportation, taxi dispatching, and public security tracking. With the increasing demand for location-based information services, wireless positioning technology has gradually become the focus of research. [0003] In the existing commonly used cellular mobile communication networks, the most commonly used wireless positioning method is the Time Difference of Arrival (TDOA) method, that is, the mobile station (MS) determines the position of the MS by detecting the time difference between the signals from two cells arriving at the MS. The TDOA method The MS needs to use the signals of at least three or more cel...

AI Technical Summary

Problems solved by technology

Although this method can effectively suppress the interference of the serving cell signal to the adjacent cell signal and improve the positioning accuracy, it cannot perform downlink data reception response (ACK or NAK) transmission in this subframe, which will seriously affect the mixed Timing Synchronization for Automatic Repeat Request (HARQ)

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