Rolling synthesizer method for baseband slow frequency hopping

• US 5,224,121 A
• Filed: 06/04/1992
• Issued: 06/29/1993
• Est. Priority Date: 06/04/1992
• Status: Expired due to Term

• Current Assignee: Motorola Mobility, Inc. (Lenovo Group Ltd.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Schorman, Eric
• Primary Examiner(s): Swann, Tod R.
• Application Number:
  US07/894,305
• Time in Patent Office: 390 Days
• Field of Search: 455/132, 455/140, 455/228, 455/277.1, 455/33.1, 455/33.3, 375/1, 380/34, 370/58.2, 370/50, 370/58.3, 370/60.1, 370/94.1, 379/59, 379/60
• US Class Current: 375/135
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04B 2001/71362 using a bank of frequency sources
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A method and apparatus is offered of exchanging a communicated signal at a base site with a communication unit on an indexed frequency of a frequency hopping communication system. The method includes the steps of transceiving, through a first base site transceiver, a first communicated signal within a first frame on a first frequency of the indexed frequency; and, while transceiving within the first frame, tuning a second, extra base site transceiver to an indexed frequency of a second frame. The second transceiver may then be used to transceive a signal within the second frame while the first transceiver is tuned to the next indexed frequency. Additional communication units may be added by adding one base site transceiver per communication unit while maintaining a single extra transceiver per frame. The extra transceiver, during each frame, is tuned to the next frequency in the frequency hopping sequence and indexing the communication units, transceiving from within different steps of the sequence, from transceiver to transceiver.

Claims

1. A method of exchanging a communicated signal at a base site with a communication unit on an indexed frequency of a frequency hopping communication system, such method comprising the steps of:

transceiving, through a first base site transceiver, a first communicated signal within a first frame on a first frequency of the indexed frequency;

while transceiving within the first frame, tuning an at least second base site transceiver to an indexed frequency of a second frame; and

transceiving the first communicated signal through the at least second base site transceiver during the second frame.

2. The method as in claim 1 further including transceiving, simultaneously with the first frame of the first communicated signal, a first frame of an at least second communicated signal on an at least second, indexed resource with an at least second communication unit through an at least third base site transceiver at the base site.

3. The method as in claim 2 further including transceiving the at least second communicated signal through the first base site transceiver during the second frame.

4. The method as in claim 3 further including, during the second frame, re-tuning the at least third base site transceiver to an indexed frequency of the first communicated signal for a third frame.

5. The method as in claim 4 further including exchanging the first communicated signal through the at least third base site transceiver during the third frame.

6. A method of transceiving a communicated signal at a base site in a communication system having an at least one communication unit exchanging the communicated signal through the base site on an indexed frequency of a first frequency hopping communication resource, such method comprising the steps of:

transceiving the communicated signal on a first frequency of the indexed frequency of the first frequency hopping communication resource during a first frame through a first base site transceiver;

during the first frame, tuning a second base site transceiver to a second frequency of the indexed frequency of the first frequency hopping communication resource for a second frame;

exchanging the communicated signal through the second base site transceiver during the second frame; and

, during the second frame tuning the first base site transceiver to an indexed frequency on the communication resource for an at least third frame.

7. The method as in claim 6 further including transceiving, simultaneously with the first frame of the first communicated signal, a first frame of an at least second communicated signal on an at least second, indexed resource with an at least second communication unit through an at least fourth base site transceiver at the base site.

8. The method as in claim 7 further including transceiving the at least second communicated signal through the first base site transceiver during the second frame.

9. The method as in claim 8 further including, during the second frame, re-tuning the at least third base site transceiver to an indexed frequency of the first communicated signal for a third frame.

10. The method as in claim 9 further including defining the third frame as the frame number equal to the number of simultaneous communicated signals plus one.

11. A method of transceiving communicated signals at a base site in a communication system having at least one communication unit exchanging a communicated signal through the base site on an indexed frequency of a frequency hopping communication resource indexing through a plurality of frequencies, such method comprising the steps of:

transceiving the communicated signal on a first frequency of the indexed frequency of the frequency hopping communication resource during a first frame through a first base site transceiver;

during the first frame, tuning an at least second base site transceiver to a second frequency of the indexed frequency of the frequency hopping communication resource for a second frame;

exchanging the communicated signal on the communication resource through the at least second base site transceiver on the indexed frequency during a second frame, first following the first frame; and

, alternately tuning the first base site transceiver and the second base site transceiver to an indexed frequency of the communication resource during subsequent frames.

12. An apparatus for exchanging a communicated signal at a base site with a communication unit on an indexed frequency of a frequency hopping communication system, such apparatus comprising:

means for transceiving, through a first base site transceiver, a first communicated signal within a first frame on a first frequency of the indexed frequency;

means for tuning, while transceiving within the first frame, an at least second base site transceiver to an indexed frequency of a second frame; and

means for transceiving the first communicated signal through the at least second base site transceiver during the second frame.

13. The apparatus as in claim 12 further comprising means for transceiving, simultaneously with the first frame of the first communicated signal, a first frame of an at least second communicated signal on an at least second, indexed resource with an at least second communication unit through an at least third base site transceiver at the base site.

14. The apparatus as in claim 13 further comprising means for transceiving the at least second communicated signal through the first base site transceiver during the second frame.

15. The apparatus as in claim 14 further comprising means for re-tuning, during the second frame, the at least third base site transceiver to an indexed frequency of the first communicated signal for a third frame.

16. The apparatus as in claim 15 further comprising means for exchanging the first communicated signal through the at least third base site transceiver during the third frame.

17. An apparatus for transceiving a communicated signal at a base site in a communication system having an at least one communication unit exchanging the communicated signal through the base site on an indexed frequency of a first frequency hopping communication resource, such apparatus comprising:

means for transceiving the communicated signal on a first frequency of the indexed frequency of the first frequency hopping communication resource during a first frame through a first base site transceiver;

means for tuning, during the first frame, a second base site transceiver to a second frequency of the indexed frequency of the first frequency hopping communication resource for a second frame;

means for exchanging the communicated signal through the second base site transceiver during the second frame; and

, means for tuning, during the second frame, the first base site transceiver to an indexed frequency of the first frequency hopping communication resource for an at least third frame.

18. The apparatus in claim 17 further comprising means for transceiving, simultaneously with the first frame of the first communicated signal, a first frame of an at least second communicated signal on an at least second, indexed resource with an at least second communication unit through an at least fourth base site transceiver at the base site.

19. The apparatus as in claim 18 further comprising means for transceiving the at least second communicated signal through the first base site transceiver during the second frame.

20. The apparatus as in claim 19 further comprising means for re-tuning, during the second frame, the at least third base site transceiver to an indexed frequency of the first communicated signal for a third frame.