Packet scheduling in a communications system

Details Packet scheduling in a communications system Packet scheduling in a communications system

2005-02-01

2005-02-01

Patel, Ajit (Department: 2664)

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

C370S395400

Reexamination Certificate

active

06850540

ABSTRACT:
Methods, systems, and arrangements enable packet scheduling in accordance with quality of service (QoS) constraints for data flows. In a Universal Mobile Telecommunications System (UMTS) network environment, for example, a Medium Access Control (MAC) layer schedules packet transmission of various data flows to meet stipulated criteria, including permitted transport format combinations (TFCs) from a TFC set (TFCS). In first embodiment(s), the TFC is selected based on guaranteed rate transmission rates, weighted fair queuing (WFQ) transmission rates, QoS class, transport block set size (TBSS), and optionally queue fill levels. These first embodiment(s) also further refine the selection process using backlog memories corresponding to previously unmet guaranteed and/or fair transmission rates. In second embodiment(s), memory requirements are reduced by selecting a TFC based on guaranteed rate transmission rates, QoS class, TBSS, and queue fill levels, without accommodating backlogs.

REFERENCES:
patent: 5914950 (1999-06-01), Tiedemann, Jr. et al.
patent: 6108552 (2000-08-01), Edwards et al.
patent: 6295295 (2001-09-01), Wicklund
patent: 6317416 (2001-11-01), Giroux et al.
patent: 6320845 (2001-11-01), Davie
patent: 6374112 (2002-04-01), Widegren et al.
patent: 6438134 (2002-08-01), Chow et al.
patent: 6438138 (2002-08-01), Kamiya
patent: 6452933 (2002-09-01), Duffield et al.
patent: 6647419 (2003-11-01), Mogul
patent: 0859492 (1998-02-01), None
patent: 1030484 (2000-01-01), None
Abhay K. Parekh;A Generalized Processor Sharing Approach to Flow Control in Integrated Services Networks: The Single-Node Case; IEEE; Jun. 1993; vol. 1, No. 3; pp. 344-357.
PCT International Search Report dated Jul. 12, 2001.

Affiliated with

Also associated with

Rating

Packet scheduling in a communications system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Packet scheduling in a communications system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Packet scheduling in a communications system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3490439