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Wireless communication apparatus and method using an adaptive credit redistribution algorithm

A wireless communication device and wireless communication technology, which are applied in the directions of wireless communication, near-field transmission systems using transceivers, radio transmission systems, etc., can solve the problems that communication features cannot support effective scheduling, difficult to allocate resources, etc.

Inactive Publication Date: 2004-09-01
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] At the same time, the credit scheme is an effective way to support the operation of the Bluetooth scatternet, but there is a problem: it cannot support efficient scheduling according to the communication characteristics of each master-slave pair or each piconet connected to the PMP node
Specifically, considering the performance relative to QoS, such a scheme has the problem that it is difficult to efficiently allocate resources considering the different data communication characteristics of the link

Method used

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  • Wireless communication apparatus and method using an adaptive credit redistribution algorithm
  • Wireless communication apparatus and method using an adaptive credit redistribution algorithm
  • Wireless communication apparatus and method using an adaptive credit redistribution algorithm

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Embodiment Construction

[0055] Hereinafter, the present invention will be described in detail with reference to the drawings.

[0056] image 3 is a schematic block diagram showing a wireless communication device according to an embodiment of the present invention.

[0057] Such as image 3 As shown, the wireless device 100 includes a buffer unit 110 , a credit redistribution unit 120 , a communication priority determination unit 130 and a communication initiation unit 140 , and the buffer unit 110 has a temporary calculation buffer 113 and a credit buffer 115 .

[0058] The credit buffer 115 of the buffer unit 110 stores the credit value of the link, and the temporary calculation buffer 113 stores the temporary account value. Each temporary account value is a total credit value, and the credit value and the temporary account value are updated every time slot.

[0059] The communication priority determination unit 130 compares the link credit values ​​stored in the credit buffer 115, and determine...

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Abstract

A wireless communication method according to the present invention, in a Bluetooth device connected to multiple piconets and operating in a scatter mode, includes steps of (a) establishing credit values by link for the multiple piconets, and the total sum of the credit values by link as a temporary account value; (b) updating the credit values by link and the temporary account value every slot based on a predetermined manner; (c) performing communications through a link selected based on a comparison result of the credit values by link at each Presence Point(PP); and (d) unevenly redistributing predetermined credit values based on characteristics by link and returning to the step (b) in one of the two cases in which the communications are interrupted with a POLL_NULL sequence and the temporary account value becomes the same as the total number, n, of links.

Description

[0001] This application claims priority under 35 U.S.C. §119 based on Korean Patent Application No. 10-2003-0012900 filed on February 28, 2003, the contents of which are incorporated herein by reference. technical field [0002] The present invention relates to a wireless communication device and method, in particular to a wireless communication device and method capable of supporting quality of service (QoS) of a link layer by using an adaptive credit redistribution algorithm in Bluetooth scatter mode. Background technique [0003] Bluetooth technology has been primarily developed to remove cables connecting devices such as mobile phone handsets, handsets, laptop computers, and the like. Bluetooth technology is a low-cost, low-power and short-range wireless technology. Bluetooth works in the unlicensed 2.4GHz ISM (industrial, scientific and medical) frequency band. The master in the Bluetooth network refers to the Bluetooth device that initiates data exchange, and the slave...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04B7/00H04W40/04H04W72/04H04W84/10H04W84/12H04W84/18
CPCH04W92/02H04W28/24G06Q20/10H04W28/26H04W84/18
Inventor 车均铉张起寿严斗燮李泰珍朴种宪吴宗洙朱良翊
Owner SAMSUNG ELECTRONICS CO LTD