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Realizing method for TD-SCDMA receiving timed error LCR measurement

A TD-SCDMA, receiving timing technology, applied in the field of wireless mobile communication, can solve the problem of not finding the receiving timing deviation calculation and the like

Inactive Publication Date: 2005-12-14
晋江市高新技术开发办公室
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Problems solved by technology

[0008] In the prior art, a good method for realizing the calculation of receiving timing deviation has not been found yet, and the implementation method of the present invention can meet the requirements of the protocol

Method used

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  • Realizing method for TD-SCDMA receiving timed error LCR measurement
  • Realizing method for TD-SCDMA receiving timed error LCR measurement
  • Realizing method for TD-SCDMA receiving timed error LCR measurement

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Embodiment Construction

[0042] see figure 2 , a flow chart of the method of the present invention, illustrating the detailed implementation process of the present invention. The invention calculates the timing of the first uplink multipath received by the Node B by using the channel impulse response received by the Node B from the UE. Extract the impulse response peak value from the first uplink time slot of the UE's first uplink frame received by the Node B, and calculate the receiving timing deviation LCR by comparing the difference between the peak value and the system timing. The system timing can be calculated through the timing of GPS, and the peak value of its impulse response is determined by the Midamble sequence of UE received by Node B. Finally, the timing advance information from the Node B to the UE can be calculated by estimating the received timing offset LCR, and can be used for positioning services of the UE.

[0043] Taking the Midamble code (128 points) provided by the channel e...

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Abstract

The present invention is LCR measurement method of reception timing deviation in TD-SCDMA. LCR measurement of reception timing deviation is realized through calculating the difference between the starting time corresponding to the time slot of the user's equipment and the first received upwards multipath timing, and is used in providing the user's equipment with time preact information and location service. The starting time corresponding to the time slot is calculated with the timing GPS, the first received upwards multipath timing is obtained through processing the channel impact response peak the user's equipment receives in the time slot, and the impact response peak is extracted from the first upward time slot in the first upward frame the user's equipment receives in the time slot. The present invention can reach measurement accuracy of 1 / 8 chip.

Description

technical field [0001] The invention relates to the timing advance calculation and positioning of user equipment (UE) in the field of wireless mobile communication, and in particular to a method for realizing low chip rate (LCR) measurement of reception timing deviation based on impulse response. Background technique [0002] In the field of wireless mobile communication, the method of receiving timing deviation LCR measurement is realized by calculating the difference between the start time of the corresponding time slot of the user equipment and the timing of the first uplink multipath received by the UE in this time slot. figure 1 is a block diagram describing the meaning of reception timing offset. [0003] Receive timing offset is defined as: [0004] TRXdev=TTS-TRXpath, the unit is chip. [0005] TRXpath: In the detection process, the timing of the first uplink multipath received by Node B. [0006] TTS: The start time of the corresponding time slot calculated accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26
Inventor 吴志华邵显成张昱
Owner 晋江市高新技术开发办公室
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