Universal radio for use in various cellular communication systems

• US 6,223,053 B1
• Filed: 06/26/1996
• Issued: 04/24/2001
• Est. Priority Date: 06/26/1996
• Status: Expired due to Term

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Systems, Inc.
• Inventors: Shah, Nainesh P., Friedmann, James J.
• Primary Examiner(s): LE, THANH C
• Application Number:
  US08/670,622
• Time in Patent Office: 1,763 Days
• Field of Search: 455/423, 455/550, 455/552, 455/553, 455/426, 455/575, 455/78, 455/84, 455/85, 455/86, 455/115, 375/216, 375/200, 375/201, 375/202, 375/206, 375/269, 375/273, 375/302, 375/322, 375/323, 375/130, 375/131, 375/140
• US Class Current: 455/552.1
• CPC Class Codes: H04B 1/406 with more than one transmission mode, e.g. analog and digital modes

Abstract

A universal radio having adjustable communication parameters such that the radio can communicate in different DS or FH type systems as well as DS-FH hybrid type systems which employ both DS and FH spread spectrum techniques. The radio is included in a mobile terminal and/or base station and can be adjusted by the user to employ communication parameters relating to various different cellular communication systems. Thus, the mobile terminal and/or base station can be used in combination with the cellular communication systems provided by different manufacturers.

Claims

1. A cellular communication device, comprising:

an adjustable radio which transmits and receives cellular communication radio signals based on selected communication parameters, the adjustable radio including;

an antenna for wirelessly transmitting and receiving the cellular communication radio signals; and

an RF section for sequencing the radio signals according to a set of communication parameters selected from among a plurality of different sets of communication parameters including pseudonoise code sequence frequency hopping sequence, modulation scheme and combinations thereof;

wherein the RF section operates with a clock speed higher than the data rate of the cellular communication radio signals, in order to reconfigure substantially instantly between a plurality of selected sets of communication parameters, so as to transmit and receive communication substantially simultaneously over a plurality of frequency bands.

2. The cellular communication device of claim 1, further comprising a memory for storing the different sets of communication parameters and wherein the different sets of communication parameters relate respectively to different cellular communication systems.

3. The cellular communication device of claim 1, wherein the input comprises a display for displaying indicia of the plurality of different sets of communication parameters.

4. The cellular communication device of claim 1, wherein the device is a mobile terminal.

5. The cellular communication device of claim 1, wherein the device is a base station.

6. The cellular communication device of claim 1, wherein the plurality of frequency bands includes at least two of an 806-870 MHZ range, 902-928 MHZ range, and 2.4-2.48 Ghz range.

7. The cellular communication device of claim 1, wherein the adjustable radio further includes circuitry for monitoring a received signal strength indicator (RSSI) output from each of the plurality of filters.

8. The cellular communication device of claim 7, wherein the circuitry for monitoring is configured to adjust the selected set of communication parameters within the adjustable radio to communicate on the frequency band corresponding to the frequency band associated with the filter outputting the greatest RSSI.

9. The cellular communication device of claim 8, wherein the adjustable radio further includes an adjustable synthesizer for varying a carrier frequency of signals transmitted by the adjustable radio so as to communicate on the plurality of frequency bands.

10. The cellular communication device of claim 1, wherein the adjustable radio includes an adjustable synthesizer for varying a carrier frequency of the cellular communication radio signals transmitted by the adjustable radio to correspond to a selected one of the plurality of frequency bands.

11. The cellular communication device of claim 1, wherein the adjustable radio further comprises an adjustable modulator and an adjustable demodulator.

12. The cellular communication device of claim 1, wherein the adjustable radio further comprises an adjustable PN sequence generator.

13. A cellular communication system, comprising:

a plurality of networks;

a respective host computer coupled to each of the plurality networks;

a plurality of base stations each coupled to a respective network and communicating with the respective host computer, each of the base stations comprising a base station transceiver for transmitting and receiving wireless communications; and

a plurality of mobile terminals each for communicating with at least one of the networks by way of at least one of the respective plurality of base stations, each of the plurality of mobile terminals having a mobile terminal transceiver for transmitting and receiving wireless communications with respect to the at least one of the respective plurality of base stations;

wherein the transceiver of at least one of the mobile terminals or base stations comprises;

an adjustable radio which transmits and receives cellular communication radio signals based on a selected set of communication parameters, the adjustable radio including;

an antenna for wirelessly transmitting and receiving the cellular communication radio signals; and

an RF section for sequencing the radio signals according to set of communication parameters selected from among a plurality of different sets of communication parameters including pseudonoise code sequences, frequency hopping sequence modulation scheme and combinations thereof;

wherein the RF section operates with a clock speed higher than the data rate of the cellular communicated radio signals, in order to reconfigure substantially instantly between a plurality of selected sets of communication parameters, so as to transmit and receive communication substantially simultaneously over a plurality of frequency bands.