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Apparatus and method for controlling the actual transmission power of a base station in a cellular communications system

A technology for a cellular communication system and transmit power, applied in the field of devices for controlling the transmit power of a base station in a cellular communication system, can solve problems such as lack of limiting self-interference and balancing forward and reverse handover boundaries

Inactive Publication Date: 2003-12-03
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional base stations are not equipped to perform this function and thus lack the ability to limit self-disturbance and balance forward and reverse handoff boundaries

Method used

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  • Apparatus and method for controlling the actual transmission power of a base station in a cellular communications system
  • Apparatus and method for controlling the actual transmission power of a base station in a cellular communications system
  • Apparatus and method for controlling the actual transmission power of a base station in a cellular communications system

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Embodiment Construction

[0054] A preferred embodiment of the present invention will be described in detail below with reference to an example depicted in the accompanying drawings. Wherever possible, like numbers in the drawings refer to the same or like parts.

[0055] According to the present invention, there is provided an apparatus and method for controlling the final transmission power of a base station in a cellular communication system. The present invention involves calculating the expected power of the channel elements. Also included is a Base Transceiver Controller (BTSC) for generating the desired output power of the base station, and a transmit power detector for measuring the previous final transmit power of the base station to obtain the measured transmit power. Finally, the present invention includes a Radio Frequency Interface Card (RFIC) that generates the final transmit power.

[0056] As noted above, base stations may be single-sector or multi-sector. The invention is equally ap...

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Abstract

An apparatus and method for controlling a final transmit power, y, of a base station in a cellular communications system that has several channels. The base station has a transmit power tracking gain, y', and a radio frequency transmit power, w. The apparatus comprises channel elements for calculating expected powers, Pk,a-Pk,i, each of which corresponds to a channel. The apparatus also comprises a transceiver system controller (BTSC) for generating a desired output power, yd, of the base station, including an adder for summing the expected powers. The apparatus also includes a transmit power detector for measuring y to obtain a measured transmit power. The apparatus further comprises a radio frequency interface card (RFIC) for generating y'. Finally, the apparatus includes a gain unit for processing y' and w to obtain the final transmit power, y.

Description

technical field [0001] The present invention relates to communication systems. In particular, the present invention relates to an apparatus and method for controlling the transmit power of a base station in a cellular communication system. Background technique [0002] In a wireless telephone communication system, many users communicate on a wireless channel that can be connected to a wired telephone system. Communication on a wireless channel can be one of many multiple access techniques that can accommodate a limited frequency spectrum. A large number of users. These multiple access techniques include Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), and Code Division Multiple Access (CDMA). CDMA technology has many advantages, and a typical CDMA system is described in US Patent 4,901,307, assigned to the assignee of the present invention and entitled "Spread Spectrum Multiple Access Communication System Using Satellite or Terrestrial Repea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04B7/005H04W52/34
CPCH04W52/343H04B7/005H04B7/26
Inventor 林塞·A·JR·维弗罗伯特·赖特·伯泽尔
Owner QUALCOMM INC