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Adaptive data rate determination for a reverse link in a communication system

A data rate, reverse link technology, applied in the field of communication, can solve the problem of data burst or discrete arrival

Inactive Publication Date: 2006-04-05
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This delay is especially likely to occur in cases where the data is bursty or has discrete arrivals

Method used

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  • Adaptive data rate determination for a reverse link in a communication system
  • Adaptive data rate determination for a reverse link in a communication system
  • Adaptive data rate determination for a reverse link in a communication system

Examples

Experimental program
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Embodiment Construction

[0027] In general terms, the present invention includes systems and methods for improving data transfer performance in a wireless communication system by controlling the increase and decrease of the reverse link data transfer rate.

[0028] refer to figure 1 , which shows a portion of a wireless communication system according to an embodiment. In this embodiment, the system includes multiple access networks 12 and multiple access terminals 14 . Each access network 12 communicates with access terminals 14 in the surrounding area. Access terminals may move within sectors, or they may move from a sector associated with one access network to a different sector associated with another access network. The coverage area is sector 16. Although in reality these sectors may be somewhat irregular and may overlap other sectors, they are depicted in the figure as depicted by dotted lines. It should be noted that, for clarity, only one of each access network, access terminal, and sector...

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Abstract

A method and apparatus for determining the data rate of a reverse link communication of an access terminal includes receiving a reverse activity bit (RAB) from an access point in the communication system, and passing the RAB to a digital filter to produce a filtered RAB. The reverse link data rate is determined based on the filtered value of the RAB. Furthermore, a processor in the access terminal may determine whether the access terminal is in an idle mode, and passing a non-busy state value of the RAB to the digital filter when the access terminal is in the idle mode. The filtered RA may be compared to a threshold to determine a mode of reverse link data rate determination. The mode defines a set of criteria for an aggressiveness level of increasing or decreasing the reverse link communication data rate. The processor, therefore, determines the data rate based on the filtered reverse activity bit in accordance with the determined mode.

Description

technical field [0001] The present invention generally relates to the field of communications, and more particularly, the present invention relates to systems and methods for improving data transfer performance in wireless communication systems. Background technique [0002] In a typical wireless voice / data communication system, base stations are associated with coverage areas. This area is called a sector. Mobile stations within a sector can transmit data to and receive data from the base station. In particular, within the scope of data communications, a base station may be referred to as an access network and a mobile station may be referred to as an access terminal. An access terminal can communicate with more than one access network simultaneously, and as the access terminal moves, the set of access networks it communicates with may change. [0003] The parameters used for communications between a particular access network and a particular access terminal are based in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04Q7/22H04L1/00H04J13/00H04W28/22
CPCH04L47/263H04L47/14H04W28/22H04L47/10Y02B60/31H04L47/11H04L47/29H04W28/0205H04W28/0284H04W48/08H04W28/10Y02D30/50H04W8/04
Inventor C·G·洛特J·P·L·奥
Owner QUALCOMM INC