WO2010071347A2 - Method for saving power of a femto base station using sleep period synchronization - Google Patents
Method for saving power of a femto base station using sleep period synchronization Download PDFInfo
- Publication number
- WO2010071347A2 WO2010071347A2 PCT/KR2009/007507 KR2009007507W WO2010071347A2 WO 2010071347 A2 WO2010071347 A2 WO 2010071347A2 KR 2009007507 W KR2009007507 W KR 2009007507W WO 2010071347 A2 WO2010071347 A2 WO 2010071347A2
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- WO
- WIPO (PCT)
- Prior art keywords
- base station
- femto base
- sleep mode
- sleep
- reference synchronization
- Prior art date
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- 238000004891 communication Methods 0.000 claims abstract description 21
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- 230000005540 biological transmission Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 2
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- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- MWRWFPQBGSZWNV-UHFFFAOYSA-N Dinitrosopentamethylenetetramine Chemical compound C1N2CN(N=O)CN1CN(N=O)C2 MWRWFPQBGSZWNV-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
- H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (19)
- A method for saving power of a femto base station, the method comprising:obtaining reference synchronization information used in a prescribed area to enable a first femto base station to perform a sleep mode operation;entering a sleep mode if a mobile station does not exist within the first femto base station; andenabling the first femto base station to be synchronized with at least one second femto base station belonging to the prescribed area using the reference synchronization information,wherein each of the femto base stations included in the prescribed area achieves synchronization of the sleep mode operation using the reference synchronization information.
- The method of claim 1, wherein the reference synchronization information comprises a sleep cycle, a listening interval and an absolute or relative start frame number and wherein the step of entering the sleep mode by being synchronized with the reference synchronization information comprises the step of shifting to the sleep mode to satisfy the sleep cycle, the listening interval and the absolute or relative start frame number.
- The method of claim 2, wherein the reference synchronization information is set to have a prescribed listening interval and a prescribed sleep cycle with reference to a preset starting point.
- The method of claim 2, wherein the reference synchronization information follows the listening interval and sleep cycle set by the first or the at least one second femto base station having entered the sleep mode in the first place.
- The method of one of claim 3 and claim 4, wherein the sleep cycle is divided into an available interval and an unavailable interval.
- The method of claim 5, wherein each of the femto base stations broadcast at least one selected from the group consisting of a synchronization channel and a super frame header (SFH) for the available interval in the sleep mode only and wherein each of the femto base stations do not receive any data by wireless during the unavailable interval.
- The method of claim 5, wherein each of the femto base stations broadcast at least one selected from the group consisting of a synchronization channel and a super frame header (SFH) for the available interval in the sleep mode only but do not receive any data by wireless during the unavailable interval and wherein the synchronization channel is synchronized with at least one of the first femto base station and the at least one second femto base station.
- The method of claim 5, further comprising the step of transmitting sleep mode information to the mobile station, wherein the sleep mode information comprises at least one selected from the group consisting of the start frame of the sleep mode, the sleep cycle and the listening interval according to the reference synchronization information.
- The method of claim 8, wherein the sleep mode information is transmitted to the mobile station via at least one selected from the group consisting of a super frame header (SFH), additional system information, a ranging response (RNG-RSP) message and a neighbor advertisement (NBR-ADV) message.
- A method for saving power, in which a mobile station saves the power of a femto base station, the method comprising:receiving a super frame header (SFH) and a synchronization channel from a first femto base station entering a sleep mode by being synchronized with reference synchronization information used for a prescribed area;detecting a cell identifier and CGS identifier of the first femto base station by decoding at least one of the super frame header (SFH) and the synchronization channel; andif the first femto base station is the femto base station to which the mobile station has subscribed to, performing an access to the first femto base station,wherein each of the femto base stations included in the prescribed area achieves synchronization of a sleep mode operation using the reference synchronization information.
- The method of claim 10, wherein the reference synchronization information comprises a sleep cycle, a listening interval and an absolute or relative start frame number.
- The method of claim 11, the step of performing the access to the first femto base station, comprising the steps of:receiving sleep mode information from the first femto base station or a macro base station; andobtaining a sleep mode operation timing point of the first femto base station using the received sleep mode information and transmitting a prescribed code or message to the first femto base station.
- The method of claim 12, wherein the sleep mode information comprises at least one selected from the group consisting of a start frame of the sleep mode, a sleep cycle and a listening interval according to the reference synchronization information and wherein the prescribed code or message is transmitted to the first femto base station via a preset uplink resource of an available interval in the sleep cycle.
- The method of claim 13, wherein if performing an access to a second femto base station selected from femto base stations included in the prescribed area, the mobile station uses the sleep mode operation timing point of the first femto base station obtained using the received sleep mode information.
- A mobile station comprising:a processor; anda radio communication (RF) module configured to transceive a radio signal externally under the control of the processor,wherein the processor controls the radio communication module to receive a super frame header (SFH) and a synchronization channel from a first femto base station entering a sleep mode by being synchronized with reference synchronization information used for a prescribed area,wherein the processor detects a cell identifier and CGS identifier of the first femto base station by decoding at least one of the super frame header (SFH) and the synchronization channel,wherein if the first femto base station is the femto base station to which the mobile station has subscribed to, the processor controls the radio communication module to perform an access to the first femto base station, andwherein each of the femto base stations included in the prescribed area achieves synchronization of a sleep mode operation using the reference synchronization information.
- The mobile station of claim 15, wherein the reference synchronization information comprises a sleep cycle, a listening interval and an absolute or relative start frame number.
- The mobile station of claim 16, wherein the processor controls the radio communication module to receive sleep mode information from the first femto base station or a macro base station and wherein the processor performs the access to the first femto base station by controlling the radio communication module to transmitting a prescribed code or message to the first femto base station by obtaining a sleep mode operation timing point of the first femto base station using the received sleep mode information.
- The mobile station of claim 17, wherein the sleep mode information comprises at least one selected from the group consisting of a start frame of the sleep mode, a sleep cycle and a listening interval according to the reference synchronization information and wherein the prescribed code or message is transmitted to the first femto base station via a preset uplink resource of an available interval in the sleep cycle.
- The mobile station of claim 18, wherein if performing an access to a second femto base station selected from femto base stations included in the prescribed area, the processor uses the sleep mode operation timing point of the first femto base station obtained using the received sleep mode information.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011540613A JP5389941B2 (en) | 2008-12-15 | 2009-12-15 | Femto base station power saving method through sleep cycle synchronization |
US13/139,574 US9264993B2 (en) | 2008-12-15 | 2009-12-15 | Method for saving power of a femto base station using sleep period synchronization |
CN200980150339.7A CN102246565B (en) | 2008-12-15 | 2009-12-15 | Method for saving power of a femto base station using sleep period synchronization |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12241208P | 2008-12-15 | 2008-12-15 | |
US61/122,412 | 2008-12-15 | ||
KR20090018650 | 2009-03-04 | ||
KR10-2009-0018650 | 2009-03-04 | ||
KR1020090065394A KR101549019B1 (en) | 2008-12-15 | 2009-07-17 | Method for power saving of femto base station using sleep period synchronization |
KR10-2009-0065394 | 2009-07-17 |
Publications (2)
Publication Number | Publication Date |
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WO2010071347A2 true WO2010071347A2 (en) | 2010-06-24 |
WO2010071347A3 WO2010071347A3 (en) | 2010-09-10 |
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PCT/KR2009/007507 WO2010071347A2 (en) | 2008-12-15 | 2009-12-15 | Method for saving power of a femto base station using sleep period synchronization |
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US (1) | US9264993B2 (en) |
WO (1) | WO2010071347A2 (en) |
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WO2012016339A1 (en) * | 2010-08-04 | 2012-02-09 | Sierra Wireless, Inc. | Active/standby operation of a femtocell base station |
WO2012041398A1 (en) * | 2010-10-01 | 2012-04-05 | Nokia Siemens Networks Oy | Muting data transmissions |
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Also Published As
Publication number | Publication date |
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WO2010071347A3 (en) | 2010-09-10 |
US9264993B2 (en) | 2016-02-16 |
US20110244792A1 (en) | 2011-10-06 |
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