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

Self adaption step-size power control system and method for radio communication system

A technology of adaptive step size and power control algorithm, applied in wireless communication, transmission control/equalization, radio/inductive link selection arrangement, etc., can solve the problem of changing and fixing the power control step size, and achieve smooth power change , The effect of good communication quality

Inactive Publication Date: 2004-07-14
KONINK PHILIPS ELECTRONICS NV
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the prior art, there are many methods for researching power control of wireless communication systems, such as US20020077138 and US20020072385, which disclose some power control methods, but they all have a fixed step size change in the power control process. The problem

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
  • Self adaption step-size power control system and method for radio communication system
  • Self adaption step-size power control system and method for radio communication system
  • Self adaption step-size power control system and method for radio communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] In the method of the present invention, we introduce an adaptive scheme for power changes. The core principle is to adjust the step size of the current power control cycle by combining the power control information of the previous n power control cycles and the power control information of the current power control cycle to adapt to the change trend of the step size.

[0024] Below we illustrate the embodiments of the present invention with examples. In this embodiment, we take n=1 as an example to describe our algorithm, but the present invention is not limited to n=1, and the n can be any number, for example, n can be 2, 3 or 4. In this embodiment, for the attribute symbols of power control, we use "+" to indicate power increase, and "-" to indicate power decrease. That is, the step size and attribute of the power control in the previous power control period are combined with the attribute of the current power control to determine the step size of the current power c...

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

This invention relates to a self-adaptive step size power control method and the system of radio communication system including getting the power control information of set number of the previous and present power control periods to determine the power control step size of the present period according to the said information and to determine a suitable present step size in each period to overcome the shortcoming of fixed number of the present step size variance to smooth the power variance.

Description

technical field [0001] The present invention relates to a power control system and method of a wireless communication system, in particular to an adaptive step power control system and method of a wireless communication system. Background technique [0002] In a wireless communication system based on CDMA (code division multiple access), the same carrier RF (radio frequency) in a base station (BS) is used to support signals of different terminals, that is, a same carrier in a base station Can be used to communicate with many terminals. figure 1 It is a schematic diagram of communication between a base station and a terminal in a general wireless communication system. It can be seen from the figure that a general wireless communication system includes a base station, a base station controller, a core network, and a mobile terminal. The mobile terminal and the base station communicate through a radio resource (for example, one carrier in a CDMA communication system, and possi...

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): H04B7/005H04W52/22H04W52/36
CPCH04W52/362H04W52/221H04W52/36
Inventor 马霓张学军程江
Owner KONINK PHILIPS ELECTRONICS NV