EP1503545A3

Method and apparatus for controlling power consumption of stations on CSMA/CA-based wireless lan

Abstract

A method and apparatus are provided for controlling the power consumption of stations when the stations transmit and receive a wireless signal to and from one another on a CSMA/CA wireless LAN. The method involves extracting information on frame transmission speed and transmission period information on first and second layers from the wireless signal; determining a power-controlled period for each of the first and second layers based on the extracted information; and reducing the power consumption of the first and second layers by switching a current mode of the first and second layers to a predetermined mode for the power-controlled period if a reception address included in the extracted information is not identical to an address of the station.

EP1503545A3, drawing sheet 1 — Sheet 1 of 1

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Projected expiry passed 27 July 2024, 2.2 years ago.

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Every citation, both waysCites: the store holds 3 of 4

Citations
Document	Relation	Office	Category	Cited during	Relevant claims
WO0147188A2	Cites	World Intellectual Property Organization (WIPO)	A	Search report	1-8
US2004022225A1	Cites	United States of America	PX	Search report	1,5
US6580700B1	Cites	United States of America	Y	Search report	1-8
CANO J-C ET AL: "Evaluating the energy-consumption reduction in a MANET by dynamically switching-off network interfaces", 3 July 2001, COMPUTERS AND COMMUNICATIONS, 2001. PROCEEDINGS. SIXTH IEEE SYMPOSIUM ON JULY 3-5, 2001, PISCATAWAY, NJ, USA,IEEE, PAGE(S) 186-191, ISBN: 0-7695-1177-5, XP010552533	Non-patent	–	–	Search report	–
"A proposal for MAC Improvements for fairness and power saving", 8 February 2001, PROJECT: IEEE P802.15 WORKING GROUP FOR WIRELESS PERSONAL AREA NETWORKS (WPANS), PAGE(S) 1-16, XP002292393	Non-patent	–	–	Search report	–
"DRAFT SUPPLEMENT TO STANDARD FOR TELECOMMUNICATIONS AND INFORMATION EXCHANGE BETWEEN SYSTEMS - LAN/MAN SPECIFIC REQUIREMENTS - PART 11 WIRELESS MEDIUM ACCESS CONTROL (MAC) AND PHYSICAL LAYER (PHY) SPECIFICATIONS: MEDIUM ACCESS CONTROL (MAC) ENHANCEMENTS", May 2002, IEEE DRAFT STANDARDS, PAGE(S) 1-145, XP008040102	Non-patent	–	–	Search report	–

10 members in 5 offices

This recordMember, by publication datePriority claim

Priority claims4

Priority claims
Document	Office	Kind	Date
20030052132	Republic of Korea	A	2003-07-28
2003052132	Republic of Korea	–	2003-07-28
2003052132	–	–	–
KR20030052132	–	–	–

Members10

Family members, oldest first
Document	Office	Kind
EP1503545A2	European Patent Office (EPO)	A2	2005-02-02
US2005025106A1	United States of America	A1	2005-02-03
KR20050013468A	Republic of Korea	A	2005-02-04
CN1585388A	China	A	2005-02-23
JP2005051781A	Japan	A	2005-02-24
KR100528336B1	Republic of Korea	B1	2005-11-15
EP1503545A3This record	European Patent Office (EPO)	A3	2006-04-19
CN100484112C	China	C	2009-04-29
US7953030B2	United States of America	B2	2011-05-31
EP1503545B1	European Patent Office (EPO)	B1	2014-01-08

40 legal events, as 4 offices reported them to INPADOC

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	Event	Code	Office
2024-10-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2024-10-14	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2024-08-21	Patent expired after termination of 20 yearsExpiredPE20	PE20	GB
2024-07-27	Expiry of rightR071	R071	DE
2023-11-30	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2023-10-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2023-07-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2023-06-28	Opt-out of the competence of the unified patent court (upc) registeredP01	P01	EP
2018-06-28	Fee paymentPLFP	PLFP	FR
2017-06-28	Fee paymentPLFP	PLFP	FR
2016-06-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2016-06-28	Fee paymentPLFP	PLFP	FR
2015-01-29	No opposition filed against granted patent, or epo opposition proceedings concluded without decisionGrantedR097	R097	DE
2014-12-17	No opposition filedOpposition26N	26N	EP
2014-11-14	No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE	PLBE	EP
2014-11-14	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA	STAA	EP
2014-10-09	No opposition filed against granted patent, or epo opposition proceedings concluded without decisionGrantedR097	R097	DE
2014-08-29	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2014-08-29	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2014-02-20	Dpma publication of mentioned ep patent grantGrantedR096	R096	DE
2014-01-08	Designated contracting statesAK	AK	EP
2014-01-08	European patent grantedGrantedFG4D	FG4D	GB
2013-12-06	(expected) grantORIGINAL CODE: 0009210GRAA	GRAA	EP
2013-12-04	Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS	GRAS	EP
2013-09-18	Intention to grant announcedINTG	INTG	EP
2013-08-21	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2013-08-20	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP	GRAP	EP
2013-07-17	Amendment of ipc main classPREVIOUS MAIN CLASS: H04L0012280000R079	R079	DE
2012-09-26	Party data changed (applicant data changed or rights of an application transferred)RAP1	RAP1	EP
2007-11-28	First examination report despatched17Q	17Q	EP
2006-12-27	Designation fees paidAKX	AKX	EP
2006-04-19	Designated contracting statesAK	AK	EP
2006-04-19	Request for extension of the european patentAX	AX	EP
2006-04-19	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2006-04-19	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2006-03-03	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
2005-02-02	Request for examination filed17P	17P	EP
2005-02-02	Designated contracting statesAK	AK	EP
2005-02-02	Request for extension of the european patentAX	AX	EP
2004-12-17	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP

Method and apparatus for controlling power consumption of stations on CSMA/CA-based wireless lan

Abstract

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Priority claims4

Members10

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