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Method for optimizing up-link transmission power for a wireless terminal

A wireless terminal and transmission power technology, applied in power management, wireless communication, radio transmission system, etc., can solve problems such as insufficient spectrum utilization, reduced signal capacity, and increased system cost

Active Publication Date: 2012-08-08
CISCO TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution leads to underutilization of spectrum, reduction of signal capacity and increase of overall system cost

Method used

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  • Method for optimizing up-link transmission power for a wireless terminal
  • Method for optimizing up-link transmission power for a wireless terminal
  • Method for optimizing up-link transmission power for a wireless terminal

Examples

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Embodiment Construction

[0019] The present invention describes a method for optimizing the uplink transmit power from a wireless terminal to a BTS in a multi-carrier system. Hereinafter, for the purpose of explaining the principle of the present invention, only a plurality of embodiments of the present invention are shown. It should be understood that those skilled in the art will be able to design various equivalents. Although these equivalents are not explicitly described here, they embody the principles of the present invention.

[0020] Figure 1A It illustrates a downlink signal composed of multiple sub-carriers in a multi-carrier system according to an embodiment of the present invention. The multi-carrier system includes at least one BTS and at least one wireless terminal for exchanging information therebetween through a wireless channel. The at least one wireless terminal is, for example, a customer premises (premise) equipment (CPE), a personal computer memory card international association ( ...

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Abstract

A method for optimizing up-link transmission power from a wireless terminal to a base transceiver station in a multi-carrier system is disclosed. The method includes steps of: determining a pathloss between the wireless terminal and the base transceiver station; assigning at least one sub-carrier to the terminal based on the pathloss between the wireless terminal and the base transceiver station;and sending a power cap command signal from the base transceiver station to the wireless terminal for limiting a maximum allowable power transmitted by the wireless terminal to a predetermined level based on proximity of the sub-carrier to an edge of a frequency band, over which the wireless terminal transmits and receives signals.

Description

[0001] cross reference [0002] This application relates to the U.S. Provisional Application No. 60 / 717,487 filed on September 14, 2005 and entitled "METHOD FOR OPTIMIZING UP-LINK TRANSMIT POWER FOR A WIRELESS BROADBAND TERMINAL IN A MULTI-CARRIER SYSTEM" and on August 11, 2006 The U.S. application filed entitled "METHOD FOR OPTIMIZING UP-LINK TRANSMISSION POWER FOR A WIRELESS TERMINAL IN A MULTI-CARRIER SYSTEM" and claimed their priority. Background technique [0003] The present invention relates generally to wireless communication, and more particularly to a method for optimizing the uplink transmit power of a wireless terminal in a multi-carrier system. [0004] One of the characteristics of the new generation of wireless devices is faster data transfer rates. For example, in a 3G system, wireless devices are required to have a data transmission rate of up to 10Mb / s, and in future 4G systems, wireless devices may be required to have a data transmission rate of up to 1,000Mb / s. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/00H04W52/24H04W52/42
CPCH04L5/0005H04W52/367H04L5/0044H04W52/242H04W52/42H04W52/24H04L5/0058
Inventor 克里斯·桑德斯桑沙林戈姆·巴拉赛卡尔杭·金约翰·格拉布纳图耶·巴纳
Owner CISCO TECH INC