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 Title: |
US6834192:
Method, and associated apparatus, for effectuating handover of communications in a bluetooth, or other, radio communication system
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Watanabe, Fujio; Espoo, Finland
Nguyen, Phong; Gepps Cross, Australia
Sanda, Takako; Kanagawa, Japan
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| Assignee: |
Nokia Corporation, Espoo, Finland
other patents from NOKIA CORPORATION (405790) (approx. 505)
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| Published / Filed: |
2004-12-21
/ 2000-07-03
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| Application Number: |
US2000000609632
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| IPC Code: |
Advanced:
H04L 12/28;
H04L 12/56;
H04W 36/14;
H04W 52/02;
H04W 56/00;
H04W 84/20;
IPC-7:
H04Q 7/00;
H04Q 7/20;
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| ECLA Code: |
H04W36/00;
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| U.S. Class: |
455/444;
455/437;
455/436;
455/041.2;
455/522;
370/331;
370/338;
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| Field of Search: |
455/444,436,41.2,502,522,437
370/331,332,336,338
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| Priority Number: |
| 2000-07-03 |
US2000000609632 |
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| Abstract: |
A method, and associated apparatus, facilitates handover of communications with a mobile Bluetooth device operable to communicate packet data with other Bluetooth devices. Handover of communications is effectuated between fixed-infrastructure access points or other mobile Bluetooth devices formed in a scatternet. The device to which communications are to be handed-over becomes a slave to the Bluetooth device with which communications are ongoing, thereby to permit time synchronization thereto.
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| Primary / Asst. Examiners: |
Trost, William; Ramfuris, Sharad
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Family: |
Show 10 known family members
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First Claim:
Show all 16 claims |
We claim:
1. A method for handing over communications with a mobile communication device (MCD), the MCD initially operable to communicate with a communication network infrastructure via a first piconet prior to handover and with a second piconet after handover, wherein the first piconet comprises a first network access point and the second piconet comprises a second network access point and at least one second-piconet pre-handover slave device, said method comprising:
- selecting initiation of handover of communication between the MCD and the network infrastructure via the first piconet to the second piconet responsive to a communication indicia representative of communications with the MCD;
- placing the at least one second-piconet pre-handover slave device in a reduced power-level state subsequent to selecting initiation of handover;
- causing at least one second-piconet communication device to become time-synchronized with the MCD; and
- effectuating communications between the MCD and the network infrastructure by way of the second piconet.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 65 U.S. patent(s) that reference this one
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| Foreign References: |
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| Other Abstract Info: |
DERABS C2002-257230
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| Other References: |
Garg et al. ("MAC scheduling policies for power optimization in Bluetooth: A master driven TDD wireless system"; Garg S.; Kalia, M.; Shorey, R.; Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st.*
Garg, Sumit. et al.; "MAC Scheduling Policies for Power Optimization in Bluetooth: A Master Driven TDD Wireless System"; VTC2000-Spring; 2000 IEEE51st; Vehicular Technology Conference Proceedings, Tokyo Japan, May 15-18, 2000; IEEE Vehicular Technology Conference, New York, New York; IEEE, US, vol. 1 of 3; conf. 51, May 15, 2000; XP000970607; pp. 196-200.
Albrecht, Markus, et al,; "IP Services Over Bluetooth: Leading the Way to a New Mobility"; Local Computer Networks, 1999; Conference on Lowell, MA, USA Oct. 18-20, 1999, Los Alamitos, California, USA, IEEE Comput. Soc. US.; Oct. 18, 1999; XP010358529; pp. 2-11.
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