Method for real-time computing path loss in mobile communication system

A mobile communication system and path loss technology, applied in wireless communication, multiplexing communication, code division multiplexing system, etc., can solve problems such as multiple memory, base station occupation, long computing time, etc.
CN1744452AInactive Publication Date: 2006-03-08诺基亚西门子通信系统技术(北京)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
诺基亚西门子通信系统技术(北京)有限公司
Publication Date
2006-03-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

Receiving signal transmitted by user device, base station determines an index N based on empirical value or test value of previous signals. Using the index N, the method carries out operation of amplification, attenuation or maintenance for signal transmitted by user device, calculates value of lose of amplified, attenuated or maintained signals for average route in multiple frames to make the value of lose for average route is located at range of data specified by system. Then, using the said value N restores actual lose value for route in use for power control. Later, the index N can be kept unchanged, or can be updated once every certain number of frames.
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Description

(1) Technical field

[0001] The present invention relates to a kind of method that is carried out power control by base station in mobile communication system; method of power control. (2) Background technology

[0002] In the TD-SCDMA (Time Division Synchronous Code Division Multiple Access) mobile communication system, the path loss of the wireless channel is very important for the base station to evaluate the wireless environment and then perform signal switching. The path loss of the signal can be used

[0003] The following formula to express:

[0004] P pathloss =P RXP -P TXP (1.1)

[0005] where P RXP is the received power of the base station, P TXP is the transmit power of the user equipment. The above-mentioned path loss can be expressed by the absolute value of power in dBm, or can be expressed by the relative value of power in dB. For example, in the current TD-SCDMA system specification, P TXP The range is [-50dBm, 33d...

Claims

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