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Calculation method and device for PCCPCH (Primary Common Control Physical Channel) carrier and interference ratio

A calculation method and technology of carrier-to-interference ratio, applied in the field of communication, can solve the problems of low accuracy of PCCPCHC/I

Active Publication Date: 2015-08-05
WUHAN HONGXIN TELECOMM TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0010] In view of this, the present invention provides a method and device for calculating the PCCPCH carrier-to-interference ratio to solve the problem of low accuracy of the PCCPCH C / I calculated especially in the high signal-to-noise ratio in the prior art

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  • Calculation method and device for PCCPCH (Primary Common Control Physical Channel) carrier and interference ratio
  • Calculation method and device for PCCPCH (Primary Common Control Physical Channel) carrier and interference ratio
  • Calculation method and device for PCCPCH (Primary Common Control Physical Channel) carrier and interference ratio

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Embodiment Construction

[0099] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0100] PCCPCH (Primary Common Control Physical Channel, Primary Common Control Physical Channel) is the bearer of the broadcast channel (BCH) in the TD-SCDMA system, and it is transmitted on time slot 0 of each 5ms radio subframe. PCCPCH occupies code channel 1 and code channel 2 of time slot 0, which are called PCCPCH1 and PCCPCH2 respectively. As the bearer of the broadcast channel, the PCCPCH has the same transmission power in the whole cell, so it can be u...

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Abstract

The invention provides a calculation method and device for PCCPCH (Primary Common Control Physical Channel) carrier and interference ratio. According to the method, PCCPCH_RSCP is calculated by performing descrambling and despreading operation on first data field data and second data filed in TS0. During calculation of PCCPCH_ISCP, when PCCPCH_C / I is not smaller than a preset threshold value, midamble_ISCP is calculated by adopting certain specified taps on an interface between two windows on channel impulsion response, and PCCPCH_ISCP is obtained by means of scale conversion; and when PCCPCH_C / I is smaller than the preset threshold value, midamble_RSCP of a midamble field is calculated through a relevant operation method, midamble_RSCP is subtracted from midamble_RSSI to obtain midamble_ISCP, and new PCCPCH_ISCP is obtained by means of scale conversion. Through adoption of the calculation method and device, the calculation accuracy is increased.

Description

technical field [0001] The present invention relates to the technical field of communication, and more specifically, relates to a calculation method and device for PCCPCH carrier-to-interference ratio in a TD-SCDMA system. Background technique [0002] For the existing mobile TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system, when performing network optimization and network troubleshooting, it is necessary to use a large number of various test instruments to test the existing network environment. Measurement, its commonly used measuring instruments include frequency scanners, test mobile phones, etc. In measuring instruments such as frequency scanners, the measurement of the PCCPCH (Primary Common Control Physical Channel, Primary Common Control Physical Channel) Carrier and Interference ratio (C / I, Carrier and Interference ratio) parameter is particularly important, because this parameter directly reflects Therefore, the accuracy of this parameter m...

Claims

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Application Information

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IPC IPC(8): H04B17/336H04L25/03
Inventor 彭琛
Owner WUHAN HONGXIN TELECOMM TECH CO LTD
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