Method of quality of service provisioning using periodic channel time allocation and device

Abstract

To maximize power saving performance without compromising on the QoS requirement of an application stream, a method and wireless network device generates a subset of a periodic service interval can be used for medium time allocation and data and information can be transmitted in contiguous medium time allocated this way. This selection of a period of time below service capacity allows multiple applications access the medium and for the selection of contiguous medium time during which data transmission can occur.

Description

technical field [0001] This application claims priority to prior US application 60 / 659,631, filed March 8, 2004, which is incorporated herein by reference. Background technique [0002] With the development of channel modulation techniques, wireless communication bandwidth has been significantly increased, making the wireless medium a viable alternative to wired and fiber-optic solutions. Likewise, the use of wireless connections continues to grow in both data and voice communications. These devices include mobile phones, portable computers in wireless networks such as wireless local area networks (WLANS), as well as audio / video streaming, audio / video phones, stationary computers in wireless networks, portable handheld devices, and the like. [0003] Each wireless network includes multiple layers and sublayers, such as a Medium Access Control (MAC) sublayer and a Physical (PHY) layer. The MAC layer is the lower of the two sublayers of the Data Link layer in the Open System...

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Problems solved by technology

For example, in slot-based MAC protocols such as Distributed Media (WiMedia) UWB MAC, there are various methods for allocating Medium Access Slots (MAS) (i.e., Medium Access Time), which lead to delays, power savings, etc. performance difference in terms of

[0006] Allocation of consecutive transmission time blocks for data or transmission time transmission may result in a large maximum service interval for an application flow

This can lead to large scheduling latencies or delay bounds

However, the evenly distributed shorter time allocated for data transmission during the processing of superframes requires the transmitting device to "wake up" frequently

This results in poor power saving performance

Furthermore, too many segments of the shorter distribution on the time allocation during the superframe may also make it impossible to transmit the entire packet successfully, especially at the end of each segment

This can lead to poor channel efficiency

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