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A method for identifying pilot frequency PN sequence offset value

A technology of offset value and sequence, applied in the direction of synchronization device, communication between multiple stations, digital transmission system, etc., can solve the problem of not being able to meet, affecting the flexible setting of PILOT_INC parameters, and limiting PN sequence planning.

Inactive Publication Date: 2008-01-16
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the border area of ​​the large and small areas, PILOT_INC is different; at this time, the condition of equation ③ cannot be satisfied
In order to meet this condition, all cells in the system need to plan the same PILOT_INC, which limits the PN sequence planning in the actual network
[0017] 2. As shown in Equation ④, the existing technology requires |PilotArrival| to be less than 32×PILOT_INC, which binds the two parameters |PilotArrival| and PILOT_INC together, and requires that where |PilotArrival| is larger, PILOT_INC must also be set The larger, thus affecting the flexible setting of the PILOT_INC parameter

Method used

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  • A method for identifying pilot frequency PN sequence offset value
  • A method for identifying pilot frequency PN sequence offset value
  • A method for identifying pilot frequency PN sequence offset value

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Embodiment Construction

[0047] The invention provides a method for identifying the PN sequence offset value corresponding to the base station pilot from the phase of the PN sequence of the base station pilot channel measured by the mobile station. The difference with the prior art is that the present invention has nothing to do with the pilot PN sequence offset increment PILOT_INC in the CDMA digital cellular communication system; it is not directly calculated by the phase of the PN sequence of the base station pilot channel measured by the mobile station. The PN sequence offset value of the actual pilot channel, but the phase of the PN sequence of the base station pilot channel measured by the mobile station, and the actual PN sequence offset of each relevant base station stored in the base station system Values ​​are compared to find the ideal PN sequence offset value corresponding to the PN sequence phase.

[0048] A specific embodiment will be described in detail below with reference to the accom...

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Abstract

This invention provides a method for identifying PN sequence bias value of corresponding base station pilot frequency by the PN sequence phase of base station pilot frequency channel measured by moveable station, which contains receiving step: the base station system receiving the PN sequence phase measured by moveable station, calculating step: base station system respectively the time delay of bias value of said PN sequence and the PN sequence of service base station of moveable station and adjacent base station, selecting step: selecting the minimum time delay value in all calculated value, judging step: judging the minimum time delay value corresponded PN sequence bias value which is the PN sequence bias value of corresponding base station pilot frequency measured moveable station. Said invention is irrelevancy with PILOT_INC parameter and can smartly plan PN sequence code and adjust Pilot Arrival range.

Description

technical field [0001] The invention relates to a method for identifying pilot PN sequence offset values ​​in a communication system. More specifically, in a CDMA digital cellular communication system, the phase of the PN sequence of the base station pilot channel measured by the mobile station is used to identify the actual PN sequence offset value corresponding to the base station pilot. Background technique [0002] The PN sequence code (or pseudo-random sequence) has properties similar to noise sequences, and is a seemingly random but actually regular periodic binary sequence. In the CDMA digital cellular mobile communication system, the length of the forward channel is 2 15 The PN sequence of -1 is used for orthogonal modulation, and the forward channels of different base stations are modulated with PN sequences of different phases. For the mobile station, each forward CDMA channel is identified by using the phase offset of the PN sequence of each base station's forwa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/707H04J13/04H04B7/26H04L7/00
Inventor 邓爱林
Owner HUAWEI TECH CO LTD
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