Physical layer energy saving technique for transceivers

Details Physical layer energy saving technique for transceivers Physical layer energy saving technique for transceivers

2007-10-02

2007-10-02

Perveen, Rehana (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C713S300000, C713S323000, C713S324000, C370S287000, C370S318000, C370S433000, C370S463000

Reexamination Certificate

active

11254986

ABSTRACT:
A first physical layer device of a first network device includes a sense circuit that senses activity on a medium and with the first physical layer device. An autonegotiation circuit attempts to establish a connection with a second physical layer device of a second network device within a first period after the sense circuit senses activity. An energy saving circuit selectively provides power to the first physical layer device based on the sensed activity and connection with the second physical layer device, and that while attempting to establish the connection resets a timer associated with the first period when the sense circuit senses activity.

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IEEE Std 802.3-2002 (Revision of Std 802.3, 2000 Edition), IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements, Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications; IEEE Computer Society, Sponsored by the LAN/MAN Standards Committee, Mar. 8, 2002; 1538 pages.

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