Cordless RF range extension for wireless piconets

• US 6,650,871 B1
• Filed: 10/14/1999
• Issued: 11/18/2003
• Est. Priority Date: 10/14/1999
• Status: Expired due to Term

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Agere Systems Incorporated (Broadcom, Inc.)
• Inventors: Johanson, James A., Mooney, Philip D., Cannon, Joseph M.
• Primary Examiner(s): Trost, William
• Assistant Examiner(s): ZEWDU, MELESS NMN
• Application Number:
  US09/418,996
• Time in Patent Office: 1,496 Days
• Field of Search: 455/95, 455/151.2, 455/403, 455/408, 455/420-422, 455/424-426, 455/434, 455/443-446, 455/451-459, 455/463, 455/465, 455/11.1, 455/22, 455/41-- 4, 455/517, 455/74, 455/462, 455/426.1
• US Class Current: 455/41.2
• CPC Class Codes: H04M 1/725 Cordless telephones user interfaces specially adapted therefor H04M1/724
• CPC Class Codes: H04M 1/733 with a plurality of base stations connected to a plurality of lines for selection in cordless PBX H04W84/16
• CPC Class Codes: H04M 2250/02 including a Bluetooth interface
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user

Abstract

Cordless telephone technology provides a long range and highly sophisticated wireless extension between a plurality of wireless piconet networks. In one embodiment, base units of separate cordless telephones include respective piconet front ends (e.g., Bluetooth protocol bearing RF front ends) in addition to the otherwise conventional RF front end. The piconet-capable base units are placed and made members of separate piconet networks, but within conventional cordless telephone range of one another, e.g., within one mile of one another. To allow communications between piconet devices on the separate wireless piconet networks, the cordless telephone base units pass piconet content information (i.e., the messages passed by a piconet device on a first piconet network including a first cordless telephone base unit intended for receipt by another piconet device on a second piconet network serviced by the other cordless telephone base unit. In another embodiment, a base unit of a cordless telephone is made a member of a first wireless piconet network while its remote handset is made a member of a second wireless base unit, and piconet content information is passed from a device on one wireless piconet network to another device on the other wireless piconet network over the wireless cordless telephone (e.g., 900 MHz or 2.4 GHz range) channel established between the cordless telephone base unit and its remote handset.

Claims

1. An RF cordless telephone range extender for a piconet, comprising:

a cordless telephone including a cordless telephone RF front end and a piconet wireless network RF front end; and

a rate adapter to adapt a data rate of piconet information from said piconet to a data rate of said cordless telephone;

wherein piconet content information flowing on a piconet wireless network is transmitted by said cordless telephone RF front end of said cordless telephone to another cordless telephone component, rate adapted back to said data rate of said piconet information, and passable to another piconet device, to effectively extend a communication range of said piconet wireless network.

2. The RF cordless telephone range extender for a piconet according to claim 1, wherein:

said piconet content information transmitted by said cordless telephone is transmitted by said base unit of said cordless telephone to a remote handset of said cordless telephone.

3. The RF cordless telephone range extender for a piconet according to claim 2, wherein:

said base unit is a member of a first piconet wireless network; and

said remote handset is a member of a second piconet wireless network separate from said first piconet wireless network.

4. The RF cordless telephone range extender for a piconet according to claim 2, further comprising:

a piconet device in communication with said cordless telephone.

5. The RF cordless telephone range extender for a piconet according to claim 1, wherein:

said piconet content information transmitted by said cordless telephone is transmitted by said base unit of said cordless telephone to a base unit having a cordless telephone RF front end and a piconet wireless network RF front end of a second cordless telephone.

6. The RF cordless telephone range extender for a piconet according to claim 5, wherein:

said base unit of said cordless telephone is a member of a first piconet wireless network; and

said base unit of said second cordless telephone is a member of a second piconet wireless network separate from said first piconet wireless network.

7. The RF cordless telephone range extender for a piconet according to claim 1, wherein:

said piconet utilizes a Bluetooth protocol.

8. The RF cordless telephone range extender for a piconet according to claim 1, wherein:

said piconet utilizes a HomeRF protocol.

9. The RF cordless telephone range extended for a piconet according to claim 1, wherein:

information from a remote handset of said cordless telephone being used to remotely control a device within said piconet wireless network.

10. In a cordless telephone, the improvement comprising:

a piconet RF front end in a base unit of said cordless telephone; and

a rate adapter to adapt a data rate of piconet information between a data rate of a piconet network to a data rate of said cordless telephone;

wherein piconet content information indicating a destination piconet device received by said piconet RF front end of said cordless telephone relating to a first wireless piconet is transmitted over a cordless telephone RF front end of said base unit of said cordless telephone to a second wireless piconet separate from said first wireless piconet, and rate adapted back to said data rate of said piconet information, and passable to another piconet, to effectively extend a communication range of a piconet wireless network.

11. In the cordless telephone according to claim 10, wherein:

said piconet content information transmitted over said cordless telephone RF front end is transmitted by said base unit of said cordless telephone to a remote handset of said cordless telephone.

12. In the cordless telephone according to claim 11, wherein:

said base unit is a member of a first piconet wireless network; and

said remote handset is a member of a second piconet wireless network separate from said first piconet wireless network.

13. In the cordless telephone according to claim 11, further comprising:

a piconet device in communication with said cordless telephone.

14. In the cordless telephone according to claim 11, wherein:

said piconet content information transmitted over said cordless telephone RF front end is transmitted by said base unit of said cordless telephone to a base unit having a cordless telephone RF front end and a piconet wireless network RF front end of a second cordless telephone.

15. In the cordless telephone according to claim 14, wherein:

said base unit of said cordless telephone is a member of a first piconet wireless network; and

said base unit of said second cordless telephone is a member of a second piconet wireless network separate from said first piconet wireless network.

16. In the cordless telephone according to claim 11, wherein:

said piconet utilizes a Bluetooth protocol.

17. In the cordless telephone according to claim 11, wherein:

said piconet utilizes a HomeRF protocol.

18. A method of simulating scatternet functionality with a cordless telephone, comprising:

implementing a piconet front end in a cordless telephone;

adapting a data rate of piconet information passed in a piconet network including said cordless telephone to a data rate of said cordless telephone; and

passing piconet network information across a cordless telephone wireless channel established by said cordless telephone to another cordless telephone component for rate adaption back to said data rate of said piconet information, to effectively extend a communication range of said piconet network.

19. The method of simulating scatternet functionality with a cordless telephone according to claim 18, wherein:

said piconet front end includes a Bluetooth compliant protocol.

20. The method of simulating scatternet functionality with a cordless telephone according to claim 18, wherein:

said piconet front end includes a HomeRF compliant protocol.

21. The method of simulating scatternet functionality with a cordless telephone according to claim 18, further comprising:

another piconet front end is implemented in a remote handset of said cordless telephone.

22. Apparatus for simulating scatternet functionality with a cordless telephone, comprising:

piconet front end means in a cordless telephone;

rate adaption means for adapting a data rate of piconet information between a data rate of a piconet network to a data rate of said cordless telephone; and

means for passing piconet network information across a cordless telephone wireless channel established by said cordless telephone to another cordless telephone for rate adaption to a data rate of another piconet device, to effectively extend a communication range of said piconet network.

23. The apparatus for simulating scatternet functionality with a cordless telephone according to claim 22, wherein:

said piconet front end includes a Bluetooth compliant protocol.

24. The apparatus for simulating scatternet functionality with a cordless telephone according to claim 22, wherein:

said piconet front end includes a HomeRF compliant protocol.

25. The apparatus for simulating scatternet functionality with a cordless telephone according to claim 22, further comprising:

additional piconet front end means implemented in a remote handset of said cordless telephone.

26. The apparatus for simulating scatternet functionality with a cordless telephone according to claim 22, further comprising:

additional piconet front end means implemented in a base unit of another cordless telephone.

27. A method of routing wireless piconet information over a long range wireless communication device, comprising:

routing piconet information indicating a destination piconet device from a first wireless piconet to a long range wireless communication device having a cordless telephone RF front end and a piconet wireless network RF front end;

adapting a data rate of said piconet information to a data rate of said long range wireless communication device;

transmitting said piconet information over said long range wireless communication device to a mating long range wireless communication device having a cordless telephone RF front end and a piconet wireless network RF front end; and

routing said received piconet information from said mating long range wireless communication device to a second wireless piconet distinct from said first wireless piconet;

wherein said long range wireless communication device and said mating long range wireless communication device transmit over distances greater than a piconet device.

28. The method of routing wireless piconet information over a long range wireless communication device according to claim 27, wherein:

said wireless piconet information conforms to a Bluetooth protocol.

29. The method of routing wireless piconet information over a long range wireless communication device according to claim 27, wherein:

said long range wireless communication device is a base unit of a cordless telephone.