Radio personal communications system and method for selecting a frequency for use in communications between a base station and a cellular terminal

• US 5,581,597 A
• Filed: 05/19/1995
• Issued: 12/03/1996
• Est. Priority Date: 11/04/1993
• Status: Expired due to Term

• Current Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Dent, Paul W., Haartsen, Jacobus C.
• Primary Examiner(s): Kuntz, Curtis
• Assistant Examiner(s): Chernoff, Michael B.
• Application Number:
  US08/446,002
• Time in Patent Office: 564 Days
• Field of Search: 377/58, 377/59, 377/60, 377/61, 377/63, 455/33.1, 455/33.2, 455/54.1, 455/54.2, 455/56.1
• US Class Current: 455/450
• CPC Class Codes: H04W 16/16 for PBS [Private Base Station] arrangements
• CPC Class Codes: H04W 16/32 Hierarchical cell structures
• CPC Class Codes: H04W 28/26 Resource reservation
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B
• CPC Class Codes: H04W 84/14 WLL [Wireless Local Loop]; RLL [Radio Local Loop]

Abstract

Transceiver frequency and optionally power level are allocated to a radio personal communications system which includes a base station connected to a wire telephone network and a cellular terminal operating within a region of a wide area cellular network to minimize interference between communications over the wide area cellular network and communications between the base station and the cellular terminal. The same cellular terminal may thus be used to communicate over the lower cost wire network when within range of the base station and over the wide area cellular network otherwise. The frequency for communications between the cellular terminal and the base station are optionally assigned by the operator of the wide area cellular network so appropriate frequencies and power levels can be assigned for base stations, to minimize same channel interference with the wide area cellular network.

Claims

1. A telephone base station for connecting a wire telephone network to a cellular terminal within a base region of a wide area cellular network which uses a plurality of frequencies within a cellular network spectrum, comprising:

a portable housing;

wire telephone network connecting means extending within said portable housing;

radio transceiving means in said portable housing;

external frequency indicating signal receiving means within said portable housing for receiving an external frequency indicating signal from said wire telephone network via said wire telephone network connecting means; and

means, in said portable housing, responsive to said external frequency indicating signal, for operating said transceiving means at a selected frequency corresponding to the received frequency indicating signal.

2. A telephone base station according to claim 1 wherein said external frequency indicating signal receiving means comprises means for receiving said external frequency indicating signal from said wide area cellular network.

3. A telephone base station as in claim 2 further comprising:

requesting means within said portable housing and electrically connected to said wire telephone network connecting means, for communicating with said wide area cellular network using a predetermined service number and for requesting said external frequency indicating signal from said wide area cellular network via said predetermined service number.

4. A telephone base station according to claim 3 further comprising:

user inputting means on said portable housing for accepting user input to initiate requesting said external frequency indicating signal.

5. A telephone base station as in claim 2 wherein said selected frequency is one of said plurality of frequencies within the spectrum of the wide area cellular network which is not allocated to the cell of said wide area cellular network in which said telephone base station is located.

6. A telephone base station as in claim 5 wherein said selected frequency is one of said plurality of frequencies within the spectrum of the wide area cellular network which is allocated to the cell of said wide area cellular network which is located a greater distance from said telephone base station than other cells of said wide area cellular network.

7. A telephone base station for connecting a wire telephone network to a cellular terminal within a base region of a wide area cellular network which uses a plurality of frequencies within a cellular network spectrum, comprising:

a portable housing;

wire telephone network connecting means extending within said portable housing;

user signaling means on said portable housing for providing an external user signal requesting a frequency;

user inputting means on said portable housing for accepting user indication of a frequency; and

radio transceiving means within said portable housing for communicating with said cellular terminal using the user indicated frequency when said cellular terminal is within said base region.

8. A telephone base station as in claim 7 wherein said user indicated frequency is one of said plurality of frequencies within the spectrum of the wide area cellular network which is not allocated to the cell of said wide area cellular network in which said telephone base station is located.

9. A radio personal communications system for operation within a wide area cellular network, which uses a plurality of frequencies within a cellular network spectrum, and within a base region linked to a wire telephone network, which base region overlaps the wide area cellular network, comprising:

a battery powered radio terminal operating within the cellular spectrum;

a telephone base station located within said base region and connected to said wire telephone network;

at least one of said telephone base station and said radio terminal including requesting means, electrically connected to said wire telephone network, for communicating with said wide area cellular network over said wire telephone network using a predetermined service number, and for requesting a frequency from the wide area cellular network;

at least one of said telephone base station and said radio terminal further including receiving means for receiving an external frequency indicating signal from said wide area cellular network, said external indicating signal indicating a frequency from said plurality of frequencies within the cellular network spectrum;

said telephone base station further comprising first radio transceiving means, responsive to said receiving means, for communicating with said radio terminal using said indicated frequency;

said radio terminal further comprising second radio transceiving means, responsive to said receiving means, for communicating with said base station based upon said indicated frequency when said radio terminal is within said base region and for communicating using said wide area cellular network when said radio terminal is not within said base region.

10. A radio personal communications system according to claim 9 wherein at least one of said base station and said radio terminal includes user inputting means, said requesting means being responsive to said user inputting means, for requesting a frequency from the wide area cellular network.

11. A radio personal communications system for operation within a wide area cellular network, which uses a plurality of frequencies within a cellular network spectrum, and within a base region linked to a wire telephone network and which base region overlaps the wide area cellular network, comprising:

a battery powered radio terminal operating within the cellular spectrum; and

a telephone base station located within said base region and connected to said wire telephone network;

at least one of said telephone base station and said radio terminal including user signaling means for requesting a frequency;

at least one of said base station and said radio terminal including user inputting means for receiving a user indication of a frequency selected from said plurality of frequencies within a cellular network spectrum;

said telephone base station further comprising first radio transceiving means responsive to said user inputting means, for communicating with said radio terminal using the user indicated frequency;

said radio terminal further comprising radio transceiving means for communicating with said telephone base station based upon the user indicated frequency when said radio terminal is within said base region and for communicating using said wide area cellular network when said radio terminal is not within said local region.

12. A telephone base station as in claim 11 wherein said user indicated frequency is one of said plurality of frequencies within the spectrum of the wide area cellular network which is allocated to the cell of said wide area cellular network which is located a greater distance from said telephone base station than other cells of said wide area cellular network.

13. A radio personal communications system for operation within a wide area cellular network, which uses a plurality of frequencies within a cellular network spectrum, and within a base region linked to a wire telephone network, which base region overlaps the wide area cellular network, comprising:

a battery powered radio terminal operating within the cellular spectrum;

a telephone base station located within said base region and connected to said wire telephone network;

said radio terminal including requesting means for communicating over said wide area cellular network using a predetermined service number to request a frequency from said wide area cellular network;

at least one of said telephone base station and said radio terminal further including receiving means for receiving a requested frequency from said plurality of frequencies within a cellular network spectrum, from said wide area cellular network;

said telephone base station further comprising first radio transceiving means, responsive to said receiving means, for communicating with said radio terminal using said requested frequency;

said radio terminal further comprising second radio transceiving means, responsive to said receiving means, for communicating with said base station based upon said requested frequency when said radio terminal is within said base region and for communicating using said wide area cellular network when said radio terminal is not within said base region.

14. A radio personal communications system according to claim 13 wherein at least one of said base station and said radio terminal includes user inputting means, said requesting means being responsive to said user inputting means, for requesting a frequency from the wide area cellular network.

15. A method for allocating a frequency to a telephone base station which connects a wire telephone network to a cellular terminal within a base region of a wide area cellular network, said method comprising the steps of:

requesting a frequency from the wide area cellular network via the wire telephone network connected to the telephone base station;

receiving an indication of the requested frequency from the wide area cellular network via the wire telephone network which is connected to the telephone base station;

providing an indication of the received frequency to the cellular terminal; and

,

operating the telephone base station and the cellular terminal at frequencies based on the received frequency for communications between the base station and the cellular terminal when the cellular terminal is within the base region.

16. The method of claim 15 further comprising the step of notifying the wide area cellular network of the location of the base station.

17. The method of claim 15 wherein said requesting step comprises the step of:

calling the wide area cellular network using a predetermined service number to request a frequency from the wide area cellular network.