Tiered contention multiple access (TCMA): a method for priority-based shared channel access

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United States of America Patent

PATENT NO 9668276
SERIAL NO

15044975

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Abstract

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Quality of Service (QoS) support is provided by means of a Tiered Contention Multiple Access (TCMA) distributed medium access protocol that schedules transmission of different types of traffic based on their service quality specifications. In one embodiment, a wireless station is supplied with data from a source having a lower QoS priority QoS(A), such as file transfer data. Another wireless station is supplied with data from a source having a higher QoS priority QoS(B), such as voice and video data. Each wireless station can determine the urgency class of its pending packets according to a scheduling algorithm. For example file transfer data is assigned lower urgency class and voice and video data is assigned higher urgency class. There are several urgency classes which indicate the desired ordering. Pending packets in a given urgency class are transmitted before transmitting packets of a lower urgency class.

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Patent Owner(s)

  • AT&T INTELLECTUAL PROPERTY II, L.P.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Benveniste, Mathilde South Orange, US 119 4443

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