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Pilot signal transmitting method

A technology of pilot signal and transmission system, applied in the field of communication

Inactive Publication Date: 2012-07-04
GUIGANG JIATE ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this scheme, the frame synchronization performance of the mobile terminal is affected because the downlink pilot signal is not transmitted in half of the subframes.

Method used

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  • Pilot signal transmitting method
  • Pilot signal transmitting method
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Embodiment Construction

[0017] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[0018] figure 1 is a flowchart illustrating a method for transmitting a pilot signal according to an embodiment of the present invention. The pilot signal transmission method includes the following steps: step S102, selecting a set of M frequency points in a network of N frequency points as an uplink pilot frequency point candidate set, and selecting frequency point a as an uplink synchronization carrier frequency, wherein, N and M are natural numbers and M

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Abstract

The present invention provides a pilot signal emitting method comprising that M frequency point collections are chosen from N networks of frequency points as the uplink pilot frequency point candidate collection, a frequency point a is chosen out as the uplink synchronous carrier frequency; N and M are natural numbers and M is less than N; the left N minus M frequency point collections are taken as the non-uplink pilot frequency point candidate collections and b frequency point is chosen as the main carrier frequency; the auxiliary carrier frequency is chosen except for the frequency points aand b; the main carrier frequency is utilized to emit the downlink pilot frequency signal, the uplink synchronous carrier frequency is utilized to emit the uplink pilot signal. By adopting the technical proposal, the present invention realizes the following beneficial effects that the interference of the downlink pilot signal on the uplink pilot frequency signal of the mobile terminal can be prevented and the synchronous function of the mobile terminal frame is not affected; the success rate of uplink synchronization is increased, the cell radius is added and the antenna correction is optimized. Moreover, the specifications of the present invention are the same as that of the 3GP technology and the implementation is simple and effective.

Description

technical field [0001] The present invention relates to the communication field, and more particularly relates to a pilot signal transmitting method. Background technique [0002] According to the 3GPP (Third Generation Partnership Project) specification on the TDD (1.28M chip rate) frame structure, after the downlink synchronous pilot time slot DwPTS, there is a guard interval GP and an uplink synchronous pilot time slot UpPTS. When the base station receives the uplink synchronization pilot transmitted by the mobile phone, the downlink synchronization pilot previously transmitted by the mobile phone may be reflected back and received by the base station after transmission. In addition, the downlink synchronization pilot transmitted by the base station of the adjacent cell with the same frequency is also received by the base station after a period of propagation. These downlink pilot signals will interfere with the uplink synchronization of the mobile phone. [0003] In TD...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04B1/76
Inventor 萧少宁
Owner GUIGANG JIATE ELECTRONICS TECH CO LTD