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Method for transmitting isochronous and asynchronous data in a wireless network

An asynchronous data and network technology, applied in network topology, transmission system, wireless communication, etc., can solve problems such as data frame uncertainty and performance degradation

Inactive Publication Date: 2010-01-27
FREESCALE SEMICON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance degradation is due to the non-deterministic nature of sending a given frame of data at any given time

Method used

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  • Method for transmitting isochronous and asynchronous data in a wireless network
  • Method for transmitting isochronous and asynchronous data in a wireless network
  • Method for transmitting isochronous and asynchronous data in a wireless network

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Embodiment Construction

[0076] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. In some of the views, like reference numerals indicate identical or corresponding parts.

[0077] Asynchronous and isochronous data

[0078] There are two kinds of data in the network: asynchronous data and isochronous data. Isochronous data has allocated bandwidth, the timing of which is guaranteed at least in short periods. Asynchronous data has no guaranteed bandwidth and is sent when transmission time becomes available. In operation, asynchronous data transfers have a higher level of reliability but do not have guaranteed transfer times.

[0079] The allocated bandwidth for isochronous data is preferably decoded in a given device 320 into channel time by the aggregation layer based on current traffic conditions. The convergence layer may be formed in the MAC layer 420 or the upper layer 430 . The required channel time is then requested from the coor...

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PUM

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Abstract

A method is provided for transmitting ultrawide bandwidth signals in a network comprising a network coordinator and one or more remote devices. The available transmission time is divided into a plurality of superframes, each of which is further divided up into a beacon duration, one or more management time slots, one or more guaranteed time slots, and one or more asynchronous time slots. Each of the management time slots, guaranteed time slots, and asynchronous time slots are assigned to one of the one or more remote devices. The network coordinator sends a beacon to the one or more remote devices during the beacon duration. The device or coordinator assigned to the current guaranteed time slot sends frames of isochronous data in the current guaranteed time slot. The device or coordinator assigned to the current asynchronous time slot sends frames of asynchronous data in the current asynchronous time slot.

Description

[0001] Cross-references to relevant patent literature [0002] This application claims the benefit of U.S. Provisional Patent Application Serial No. 60 / 349,353, filed January 22, 2002, entitled "Short Asynchronous Data in Managed Time Slots," filed January 22, 2002 by Knut T. Odman U.S. Provisional Patent Application Serial No. 60 / 349,357, filed January 22, entitled "Long Asynchronous Data in Asynchronous Time Slots," and Knut T. Odman, serial number 60 / 349,359, filed January 22, 2002, Priority to US Provisional Patent Application entitled "LLC Service Access Point for Convergence Layer Replacement for 802.2," the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to wireless personal area network and wireless local area network. More specifically, the present invention relates to how to handle short asynchronous data streams in allocated but otherwise unused administrative time slots, or long asynchronous da...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/28H04B1/69H04W74/02
CPCH04W48/08H04W72/0446H04W74/02H04B1/7163H04B1/7183H04W84/18H04L12/28H04L12/64
Inventor 克努特·奥德曼
Owner FREESCALE SEMICON INC