Power management using a bandwidth control mechanism

• US 6,731,613 B1
• Filed: 06/14/2000
• Issued: 05/04/2004
• Est. Priority Date: 06/14/2000
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Provance, Curtis Alan
• Primary Examiner(s): Kizou, Hassan
• Assistant Examiner(s): MCLOUGHLIN, MICHAEL I
• Application Number:
  US09/594,617
• Time in Patent Office: 1,420 Days
• Field of Search: 370/229, 370/230, 370/232, 370/234, 370/235, 370/236, 370/277, 370/310, 370/311, 370/315, 370/316, 370/318, 370/323, 370/325, 370/342, 370/343, 370/344, 370/347, 370/355, 370/401, 370/429, 370/465, 370/468, 455/3.02, 455/500
• US Class Current: 370/311
• CPC Class Codes: H04W 52/343 taking into account loading or congestion level

Abstract

A buffered packet switching network component provides a communication path between a packet source and a packet destination. The packet switching network component includes a bandwidth control mechanism that reduces communication traffic in response to buffer congestion. The bandwidth control mechanism is also utilized to conserve power. When the buffered packet switching network component detects a transition event, a parameter of the bandwidth control mechanism is modified such that a transferred packet indicates the packet switching network component is congested. In response to the congestion, a packet source is requested to reduce the rate at which it is sending packets through the congested packet switching network component. As network traffic is reduced, unused devices of the packet switching network component are deactivated such that power is conserved.

Claims

1. A method of conserving power in a buffered packet switching network component that responds to a bandwidth control mechanism by reducing communication traffic in response to buffer congestion, the buffered packet switching network component providing a communication path between a packet source and a packet destination, said method comprising the steps of:

detecting when a buffered packet switching network component has a transition event;

modifying a parameter of a bandwidth control mechanism in response to the transition event such that a transferred packet indicates the buffered packet switching network component is congested;

requesting a packet source to reduce a packet rate in response to the transition event;

deactivating unused devices of the buffered packet switching network component such that power is conserved; and

the transition event is a low battery condition a timer expiration, or a temperature change.

2. The method of claim 1, wherein the bandwidth control mechanism is random early detection (RED).

3. The method of claim 1, wherein the buffered packet switching network component is included within a satellite.

4. The method of claim 1, wherein the buffered packet switching network component is included within a router.

5. The method of claim 1, wherein the low battery condition is a result of an eclipse event that prevents a solar panel of a satellite from providing an adequate amount of power to maintain a current communication traffic load.

6. The method of claim 1, wherein the parameter includes a marking parameter and a deleting parameter.

7. The method of claim 1, wherein the transition event is expiration a timer that indicates when an eclipse event will occur.

8. The method of claim 1, wherein the transition event is an over-temperature event.

9. A buffered packet switching network component that responds to a bandwidth control mechanism by reducing communication traffic in response to buffer congestion, the buffered packet switching network component providing a communication path between a packet source and a packet destination, said buffered packet switching network component comprising:

a multi-channel receiver for receiving packetized information from a packet source;

a memory for buffering the packetized information;

a multi-channel transmitter for transmitting the received packetized information to a packet destination;

a switch for providing the buffered packetized information to the multi-channel transmitter;

a processor coupled to and controlling the multi-channel receiver, the memory, the multi-channel transmitter and the switch; and

processor executable code, for causing the processor to perform the steps of;

detecting when a buffered packet switching network component has a transition event;

modifying a parameter of a bandwidth control mechanism in response to the transition event such that a transferred packet indicates the buffered packet switching network component is congested;

a

deactivating unused devices of the buffered packet switching network component such that power is conserved, wherein the packet destination requests the packet source reduce its packet rate in response to the transition event; and

the transition event is a low battery conditions a timer expiration, or a temperture change.

10. The buffered packet switching network component of claim 9, wherein the bandwidth control mechanism is random early detection (RED).

11. The buffered packet switching network component of claim 9, wherein the buffered packet switching network component is included within a satellite.

12. The buffered packet switching network component of claim 9, wherein the buffered packet switching network component is included within a router.

13. The buffered packet switching network component of claim 9, wherein the low battery condition is a result of an eclipse event that prevents a solar panel of a satellite from providing an adequate amount of power to maintain a current communication traffic load.

14. The buffered packet switching network component of claim 9, wherein the parameter includes a marking parameter and a deleting parameter.

15. The buffered packet switching network component of claim 9, wherein the transition event is expiration a timer that indicates when an eclipse event will occur.

16. The buffered packet switching network component of claim 9, wherein the transition event is an over-temperature event.

17. A satellite that includes a buffered packet switching network component that responds to a bandwidth control mechanism by reducing communication traffic in response to buffer congestion, the buffered packet switching network component providing a communication path between a packet source and a packet destination, said satellite comprising;

a multi-channel receiver for receiving packetized information from a packet source;

a memory for buffering the packetized information;

a multi-channel transmitter for transmitting the received packetized information to a packet destination;

a switch for providing the buffered packetized information to the multi-channel transmitter;

a processor coupled to and controlling the multi-channel receiver, the memory, the multi-channel transmitter and the switch; and

processor executable code, for causing the processor to perform the steps of;

detecting when a buffered packet switching network component has a transition event;

modifying a parameter of a bandwidth control mechanism in response to the transition event such that a transferred packet indicates the buffered packet switching network component is congested; and

deactivating unused devices of the buffered packet switching network component such that power is conserved, wherein the packet destination requests the packet source reduce its packet rate in response to the transition event; and

the transition event is a low battery condition a timer expiration, or temperature change.

18. The satellite of claim 17, wherein the bandwidth control mechanism ie random early detection (RED).