Unlock instant, AI-driven research and patent intelligence for your innovation.

Reverse link power control for an OFDMA system

A technology for controlling channels and transmission power, applied in the field of communications, which can solve problems such as interference and degradation

Active Publication Date: 2012-01-18
QUALCOMM INC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, each terminal can also cause interference to other terminals communicating with nearby base stations
The performance of each terminal is degraded by interference from all other terminals in the system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reverse link power control for an OFDMA system
  • Reverse link power control for an OFDMA system
  • Reverse link power control for an OFDMA system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs.

[0026] figure 1 A wireless communication system 100 having a plurality of base stations 110 and a plurality of terminals 120 is shown. A base station is a station that communicates with a terminal. A base station may also be referred to as and may contain some or all functionality of an access point, Node B, and / or some other network entity. Each base station 110 provides communication coverage for a particular geographic area 102 . The term "cell" can refer to a base station and / or its coverage area depending on the context in which the term is used. To improve system capacity, the base station coverage area can be divided into multiple smaller areas, for example three smaller areas 104a, 104b and 104c. Each small...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention refers to reverse link power control for an OFDMA system. Techniques for performing power control of multiple channels sent using multiple radio technologies are described. The transmit power of a reference channel, sent using a first radio technology (e.g., CDMA), is adjusted to achieve a target level of performance (e.g., a target erasure rate) for the reference channel. The transmit power of a data channel, sent using a second radio technology (e.g., OFDMA), is adjusted based on the transmit power of the reference channel. In one power control scheme, a reference power spectral density (PSD) level is determined based on the transmit power of the reference channel. A transmit PSD delta for the data channel is adjusted based on interference estimates. A transmit PSD of the data channel is determined based on the reference PSD level and the transmit PSD delta. The transmit power of the data channel is then set to achieve the transmit PSD for the data channel.

Description

[0001] Information about divisional applications [0002] This case is a divisional application. The parent case of this divisional case is an invention patent application with the application date of August 22, 2006, the application number 200680038632.0, and the invention title "Reverse Link Power Control of Orthogonal Frequency Division Multiple Access (OFDMA) System". [0003] Related Application Cross Reference [0004] This application requests provisional U.S. Application No. 60 / 710,404, filed August 22, 2005, and entitled "Up Link Power Control For OFDMA Systems," and the January 2006 Priority to U.S. Provisional Patent Application No. 60 / 756,816, filed on the 5th and entitled "Up Link Power Control For OFDMA Systems," both of which are subject to Assigned to the assignee of the present invention and incorporated herein by reference. technical field [0005] The present disclosure relates generally to communications, and more specifically, to power control in wir...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/16H04W52/24H04W52/32H04B1/69H04J13/00
CPCH04W52/146H04B17/009H04W52/12H04W52/20H04W52/08H04W52/241H04W52/248H04W52/325H04W52/247H04W52/16H04B17/391H04L1/18H04W52/243H04W52/48H04W52/54H04W88/06
Inventor 阿莫德·卡恩德卡尔
Owner QUALCOMM INC