Multi-service cellular phone network access device

• US 8,326,349 B2
• Filed: 03/05/2008
• Issued: 12/04/2012
• Est. Priority Date: 03/07/2007
• Status: Active Grant

• Current Assignee: Geo Semiconductor Incorporated
• Original Assignee: Maxim Integrated Products, Inc. (Analog Devices, Inc.)
• Inventors: Brown, David, Pendse, Ajit B.
• Primary Examiner(s): FARAGALLA, MICHAEL A
• Application Number:
  US12/042,655
• Publication Number:
  US 20080220813A1
• Time in Patent Office: 1,735 Days
• Field of Search: 455/445, 455/404.1, 455/423, 455/448, 455/512, 370/338, 370/445
• US Class Current: 455/552.1
• CPC Class Codes: H04L 12/5692 Selection among different networks
• CPC Class Codes: H04W 4/16 Communication-related supplementary services, e.g. call-transfer or call-hold

Abstract

An access device is described herein for determining and selecting, for a cellular call received by a cellular transceiver of the access device, one of a plurality of networks to route the call to. In some embodiments, the determining and selecting may be based at least on a type of each of a plurality of network interfaces of the access device and availability of each corresponding network, the network interfaces including at least two of a cellular retransmitter, an IP networking interface, or a PSTN interface. In various embodiments, if a cellular network is determined and selected, the access device may relay the call. Also, if an IP or PSTN network is determined and selected, the access device may establish on behalf of the call an outgoing call through the IP or PSTN network and translate signals of the cellular call to signals for the IP or PSTN network.

Claims

1. A method comprising:

determining and selecting, by an access device, for a cellular call to a callee received by a cellular transceiver of the access device, one of a plurality of networks to route the cellular call to, the determining and selecting being based at least on a type of each of a plurality of network interfaces of the access device and availability of each corresponding network, the network interfaces including at least two of a cellular retransmitter, an IP networking interface, or a PSTN interface, wherein the access device is a standalone device coupled between a cellular handset and the plurality of networks, and wherein the access device is coupled to each of the cellular handset and the plurality of networks wirelessly or by a wire;

when a cellular network, coupled wirelessly to the access device, is determined and selected, relaying, by the access device, the cellular call using the cellular retransmitter;

and when an IP or PSTN network, coupled to the access device wirelessly or by a wire, is determined and selected,

establishing on behalf of the cellular call, by the access device, an outgoing call to the callee through the IP or PSTN network respectively, and

translating, by the access device, signals of the cellular call to signals for the IP or PSTN network respectively.

2. The method of claim 1, further comprising receiving, by the access device, the cellular call from the cellular handset proximally located from the access device.

3. The method of claim 2, wherein said receiving comprises receiving the call by a wireless or wired local area network interface of the access device rather than by the cellular transceiver.

4. The method of claim 1, wherein the relaying comprises relaying the cellular call to a cellular operator tower of the cellular network.

5. The method of claim 1, wherein the PSTN network is used as a fallback network for emergency calling.

6. The method of claim 1, further comprising requiring the cellular handset initiating the cellular call to be registered, and, if the cellular handset is not registered, facilitating registering of the cellular handset.

7. The method of claim 1, wherein the determining and selecting comprise determining a lowest cost communication service and selecting the one of the plurality of networks corresponding to the lowest cost communication service.

8. The method of claim 1, wherein the determining and selecting include preferring the cellular network to the IP network, and selecting the IP network only after connection to the cellular network via the repeater has failed.

9. The method of claim 1, further comprising maintaining a profile for the cellular handset from which the cellular call was received, including service providers used by the cellular handset, and, when a call is received from the cellular handset, establishing a connection to the IP network via one of the service providers.

10. The method of claim 1, wherein said determining, said selecting, said relaying, said establishing, and/or said translating are performed simultaneously by the access device for multiple cellular handsets.

11. The method of claim 1, further comprising, if the IP or PSTN network is determined and selected, simulating a signal to the cellular network to maintain a connection to the cellular network.

12. An access device that is coupled between a cellular handset and a plurality of networks, comprising:

a cellular transceiver configured to facilitate cellular communication wirelessly with the cellular handset proximally located from the access device;

the plurality of network interfaces, including at least two of a cellular retransmitter, an IP networking interface, or a PSTN interface to couple the access device to one or more networks, wherein the plurality of network interfaces couple the access device to the one or more networks wirelessly or by a wire; and

service control logic coupled to the cellular transceiver and the one or more interfaces to, when operated,

determine and select, for a cellular call from the cellular handset to a callee received by the cellular transceiver, one of a plurality of networks to route the cellular call to through a corresponding one of the plurality of network interfaces, the determining and selecting being based at least on a type of each of the plurality of network interfaces and availability of each corresponding network,

when a cellular network, coupled wirelessly to the access device, is determined and selected, relay the cellular call using the cellular retransmitter, and

when an IP or PSTN network, coupled to the access device wirelessly or by a wire, is determined and selected, (1) establish on behalf of the cellular call an outgoing call to the callee through the IP or PSTN network respectively, and (2) translate signals of the cellular call to signals for the IP or PSTN network respectively.

13. The access device of claim 12, wherein the service control logic is further adapted to receive the cellular call.

14. The access device of claim 12, wherein the service control logic is adapted to determine and select, and said determine and select further comprise determining a lowest cost communication service and selecting the one of the plurality of networks corresponding to the lowest cost communication service.

15. The access device of claim 12, wherein the service control logic is adapted to determine and select, said determine and select further including preferring the cellular network to the IP network, and selecting the IP network only after connection to the cellular network via the repeater has failed.

16. The access device of claim 12, wherein said determine, said select, said relay, said establish, and/or said translate are performed simultaneously by the access device for multiple cellular handsets.

17. The access device of claim 12, wherein the service control logic is further adapted to, if the IP or PSTN network is determined and selected, simulate a signal to the cellular network to maintain a connection to the cellular network.

18. The access device of claim 12, further comprising a wireless or wired local area network interface coupled to the service control logic to receive calls from the cellular handset or another device associated with the cellular handset.

19. An article of manufacture comprising:

a storage medium;

a plurality of instructions stored on the storage medium and configured to program an access device that is a standalone device coupled between a cellular handset and a plurality of networks to

determine and select, for a cellular call to a callee received by the cellular transceiver of the access device, one of the plurality of networks to route the cellular call to, the determining and selecting being based at least on a type of each of a plurality of network interfaces of the access device and availability of each corresponding network, the network interfaces including at least two of a cellular retransmitter, an IP networking interface, or a PSTN interface,

when a cellular network, coupled to the access device wirelessly, is determined and selected, relay the cellular call using the cellular retransmitter, and

when an IP or PSTN network, coupled to the access device wirelessly or by a wire, is determined and selected, establish on behalf of the cellular call an outgoing call to the callee through the IP or PSTN network respectively, and

translate signals of the cellular call to signals for the IP or PSTN network respectively; and

wherein the access device is coupled to each of the cellular handset and the plurality of networks wirelessly or by a wire.

20. The article of claim 19, wherein the instructions are further configured to program the access device to receive the cellular call from the cellular handset proximally located from the access device.

21. The article of claim 19, wherein instructions are configured to determine and select, and said determine and select include preferring the cellular network to the IP network, and selecting the IP network only after connection to the cellular network via the repeater has failed.

22. The article of claim 19, wherein the instructions are further configured to, if the IP or PSTN network is determined and selected, simulate a signal to the cellular network to maintain a connection to the cellular network.