Technique for Accommodating Electronic Components on a Multilayer Signal Routing Device

• US 20100316067A1
• Filed: 08/05/2010
• Published: 12/16/2010
• Est. Priority Date: 03/15/2002
• Status: Active Grant

• Current Assignee: RPX Clearinghouse LLC (RPX Corporation)
• Original Assignee: Nortel Networks Limited (Nortel Networks Corporation)
• Inventors: Chmara, Thomas P., Algie, Glenn
• Granted Patent: US 9,008,121 B2
• Time in Patent Office: Days
• US Class Current: 370/468
• CPC Class Codes: H04J 3/1611 Synchronous digital hierarchy [SDH] or SONET H04J3/1664 takes precedence for interactions with OTN
• CPC Class Codes: H04J 3/1682 Allocation of channels according to the instantaneous demands of the users, e.g. concentrated multiplexers, statistical multiplexers

Abstract

A technique for delivering and enforcing network quality of service from a head-end to a plurality of outstations is disclosed. In one embodiment, the technique is realized by assigning a transmit duration for each one of the plurality of outstations by the head-end; and assigning a transmit frequency for each one of the plurality of outstations by the head-end; wherein bandwidth for each one of the plurality of outstations is adjusted dynamically at the head-end. In addition, a control message may be received from an outstation indicating extra capacity at the outstation where the extra capacity may be allocated for one or more of burst capacity and best effort traffic.

Claims

1-23. -23. (canceled)

24. A method for enforcing network quality of service from a head-end station to a plurality of outstations, the method comprising the steps of:

assigning at least one transmit timeslot for each of the plurality of outstations for a cycle by the head-end station;

assigning a transmit duration for each assigned timeslot for each of the plurality of outstations for the cycle by the head-end station, wherein the transmit duration is based at least in part on a size of a plurality of zones in a scheduler;

assigning a transmit frequency for each assigned timeslot for each of the plurality of outstations for the cycle by the head-end station, wherein the transmit frequency is a number of times that each of the plurality of outstations transmits during the cycle; and

adjusting bandwidth for each of the plurality of outstations dynamically for the cycle by the head-end station, wherein adjusting the bandwidth comprises changing at least one of the transmit duration of an assigned time slot and the transmit frequency of an assigned time slot.

25. The method of claim 24, wherein jitter for each of the plurality of outstations is adjusted dynamically for the cycle at the head-end station.

26. The method of claim 24, further comprising the step of:

receiving a control message from one of the plurality of outstations indicating extra capacity at the one of the plurality of outstations.

27. The method of claim 26, further comprising the step of:

allocating the extra capacity for one or more of burst capacity and best effort traffic.

28. The method of claim 27, wherein the burst capacity represents capacity over an outstation'"'"'s committed information rate.

29. The method of claim 27, wherein the best effort traffic represents a committed information rate of zero.

30. The method of claim 27, wherein different service levels are enforced.

31. A non-transitory processor readable storage medium containing code for executing a computer process performing the method recited in claim 24.

32. A system for enforcing network quality of service from a head-end station to a plurality of outstations, the system comprising:

a scheduler at the head-end station for assigning at least one transmit timeslot for each of the plurality of outstations for a cycle, assigning a transmit duration for each assigned timeslot for each of the plurality of outstations for the cycle, wherein the transmit duration is based at least in part on a size of a plurality of zones in the scheduler, assigning a transmit frequency for each assigned timeslot for each of the plurality of outstations for the cycle, wherein the transmit frequency is a number of times that each of the plurality of outstations transmits during the cycle; and

adjusting bandwidth for each of the plurality of outstations dynamically for the cycle, wherein adjusting the bandwidth comprises changing at least one of the transmit duration of an assigned time slot and the transmit frequency of an assigned time slot.

33. The system of claim 32, wherein jitter for each of the plurality of outstations is adjusted dynamically for the cycle at the head-end station.

34. The system of claim 32, wherein a control message is received from one of the plurality of outstations indicating extra capacity at the one of the plurality of outstations.

35. The system of claim 34, wherein the extra capacity is allocated for one or more of burst capacity and best effort traffic.

36. The system of claim 35, wherein the burst capacity represents capacity over an outstation'"'"'s committed information rate.

37. The system of claim 35, wherein the best effort traffic represents a committed information rate of zero.

38. The system of claim 35, wherein different service levels are enforced.

39. An article of manufacture for delivering network quality of service from a head-end station to a plurality of outstations, the article of manufacture comprising:

a non-transitory processor readable storage medium containing code;

wherein the code is configured to be readable by at least one processor and thereby cause the at least one processor to operate so as to;

assign at least one transmit timeslot for each of the plurality of outstations for a cycle by the head-end station;

assign a transmit duration for each assigned timeslot for each of the plurality of outstations for the cycle by the head-end station, wherein the transmit duration is based at least in part on a size of a plurality of zones in a scheduler;

assign a transmit frequency for each assigned timeslot for each of the plurality of outstations by the head-end station, wherein the transmit frequency is a number of times that each of the plurality of outstations transmits during the cycle; and

adjust bandwidth for the each of the plurality of outstations dynamically for the cycle by the head-end station, wherein adjust bandwidth comprises changing at least one of the transmit duration of an assigned time slot and the transmit frequency of an assigned time slot.

40. The article of manufacture of claim 39, wherein a control message is received from one of the plurality of outstations indicating extra capacity at the one of the plurality of outstations.

41. The article of manufacture of claim 40, wherein the extra capacity is allocated for one or more of burst capacity and best effort traffic.

42. The article of manufacture of claim 41, wherein the burst capacity represents capacity over an outstation'"'"'s committed information rate.

43. The article of manufacture of claim 41, wherein the best effort traffic represents a committed information rate of zero.