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Transmission power control of mobile station

A technique of transmitter power, transmit power level, applied in transmission control/equalization, power management, communication between multiple stations, etc.

Inactive Publication Date: 2005-07-13
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Method used

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  • Transmission power control of mobile station
  • Transmission power control of mobile station
  • Transmission power control of mobile station

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Embodiment Construction

[0022] exist figure 1 In the mobile station MS, the mobile station MS communicates with the relevant base station of the cell 13 where the mobile station is located. The base stations within cell 13 are part of a larger cellular network, including base stations such as base stations 10, 11, 12, 13, and so on. The base station 13 receives the communication from the mobile station MS and transmits it to the radio network core RNC associated with the base station 13 . In order to connect the communication of the mobile station with the communication of other mobile stations, networks, etc., the radio network core (RNC) communicates through the mobile service switching station MSC.

[0023] When a mobile station MS enters a cellular geographic area 13, it establishes communication with a base station located within a particular cell 13. Even within the same cellular area 13, mobile telephones MS can be assigned to smaller geographical areas, commonly known as sectors. Sectors m...

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Abstract

A method and apparatus for controlling uplink transmission powers of mobile stations in the cellular system are disclosed. Because mobile stations have inherent limitations and output power dynamic range, one mobile station which migrates very close to a common base station may be instructed to reduce its transmission power level to an amount which is less than the inherent mobile station minimum output power threshold. If the mobile station does not reduce power, it dominates neighboring mobile stations, causing other mobile stations which are operating within acceptable parameters to be dropped in favor of the dominating mobile station. The present invention provides a method and apparatus for removing an offending mobile station transmission until a path loss increases to the point that the offending mobile station can operate within acceptable reception power levels by transmitting at its inherent minimum power level.

Description

technical field [0001] This invention relates to cellular telephone systems, and more particularly to transmission power control of mobile stations. Background technique [0002] As is well known, cellular communication systems include base stations geographically arranged in a cellular structure to allow mobile radio units to communicate with each other and with an associated switching system. Communications occur between mobile stations and base stations, and from base stations to switching nodes. Switching nodes and control nodes communicate with other communication systems through gateways. [0003] In a Code Division Multiple Access (CDMA) mobile communication system, since each mobile station uses a different modulation code that distinguishes its own communications from those of other mobile wireless devices, the mobile stations can use the same radio frequency band with a common base station to communicate. [0004] As a result of mobile stations in a public cell ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005H04B7/26
CPCH04W52/34H04W52/367H04W52/38
Inventor W·米勒
Owner TELEFON AB LM ERICSSON (PUBL)
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