Token-based active queue management

Details Token-based active queue management Token-based active queue management

2007-10-09

2007-10-09

Jung, Min (Department: 2663)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S252000, C370S412000

Reexamination Certificate

active

10259153

ABSTRACT:
Methods and apparatus are provided for managing a data packet queue corresponding to a resource of a network device. A token count TCis maintained for a predefined flow of data packets, and the transmission of packets in the flow into the queue is controlled in dependence on this token count. The token count is decremented when packets in the flow are transmitted into the queue, and the token count is incremented at a token increment rate C. A bandwidth indicator, indicative of bandwidth availability in the resource, is monitored, and the token increment rate C is varied in dependence on this bandwidth indicator. The bandwidth-dependent variation of the token increment rate C is such that, when available bandwidth is indicated, the increment rate C is increased, and when no available bandwidth is indicated the increment rate C is decreased.

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patent: 7020143 (2006-03-01), Zdan
patent: 2002/0071387 (2002-06-01), Horiguchi et al.

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