Interconnecting and processing system for facilitating frequency hopping

• US 5,081,641 A
• Filed: 02/06/1990
• Issued: 01/14/1992
• Est. Priority Date: 02/06/1990
• Status: Expired due to Term

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Spear, Stephen L., Kotzin, Michael D.
• Primary Examiner(s): Gregory, Bernarr E.
• Application Number:
  US07/475,633
• Time in Patent Office: 707 Days
• Field of Search: 379/59, 370/60, 370/94.1, 370/85.1, 370/124, 455/33, 455/54
• US Class Current: 375/133
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

Method and apparatus for facilitating communication of information in a system without the use of a baseband hopping unit, by sharing a common TDM bus between a plurality of radio communication units, processing units, and information links, where the processing units extract traffic channel information, packetize and/or unpacketize the information, and return same back to the common bus for retrieval by the information links or radio communication units.

Claims

1. A method for communicating signals from at least one information link to a plurality of transmitters operating at various frequencies within a communication system, said method comprising the steps of:

operably coupling the at least one information link to the plurality of transmitters through a common communications bus;

operably coupling at least one processing unit to the common bus;

processing, in the at least one processing unit, at least a portion of the signal transferred from the at least one information link over the bus, into a processed signal;

returning the processed signal back to the bus, such that both processed and unprocessed signals are multiplexed on the common communications bus simultaneously; and

extracting at least a portion of the processed signal from the bus for communication to at least one of the plurality of transmitters.

2. The method of claim 1 wherein the at least one information link carries at least one logical traffic channel.

3. The method of claim 2 wherein that logical traffic channel comprises at least one of:

speech traffic; and

data traffic.

4. The method of claim 1 wherein the at least one processing unit processes traffic channel information dedicated to at least a specific logical traffic channel.

5. The method of claim 1 wherein the plurality of transmitters operably couple to the bus through the at least one processing unit.

6. The method of claim 1 wherein the step of processing further comprises at least one of the steps of:

partitioning at least a portion of a logical traffic channel into information packets to be communicated by at least one of the plurality of transmitters;

channel coding at least a portion of the unprocessed signal'"'"'s information; and

encrypting at least a portion of the unprocessed signal'"'"'s information.

7. The method of claim 1 wherein the bus comprises a TDM bus.

8. A method for communicating signals, received by a plurality of receivers, to at least one information link within a communication system, said method comprising the steps of:

operably coupling the at least one information link to the plurality of receivers through a common communications bus;

operably coupling at least one processing unit to the common bus;

processing, in the at least one processing unit, at least a portion of the received signals transferred from the plurality of receivers over the bus, into a processed signal;

returning the processed signal back to the bus, such that both received signals and processed signals are multiplexed on the common communications bus simultaneously; and

extracting at least a portion of the processed signal from the bus for communication over the at least one information link.

9. The method of claim 8 wherein the step of processing further comprises at least one of the steps of:

combining multiple information packets transferred from the receivers into a single traffic channel;

decrypting at least a portion of the received signal information transferred from the plurality of receivers; and

channel decoding at least a portion of the received signal information transferred from the receivers.

10. The method of claim 8 wherein the bus comprises a TDM bus.

11. The method of claim 10 wherein the TDM bus couples multiple packets of information for at least one traffic channel from RF receivers in a cellular radiotelephone base site.

12. In a wireless communication system, a method for facilitating communication of information between at least one traffic channel and a plurality of transmitters operating at various frequencies, said method comprising the steps of:

communicating signal information for the at least one traffic channel over a common communications bus to at least one processing unit;

processing, by at least one processing unit operably coupled to the common bus, at least a portion of the signal information into multiple packets of information;

returning at least one of the multiple packets to the common bus, such that both signal information and processed signal information are multiplexed on the common communications bus simultaneously; and

extracting the least one multiple packet form the bus by at least one processing unit for delivery to at least one of the plurality of transmitters for communication at a frequency associated with that transmitter.

13. The method of claim 12 wherein the bus comprises a TDM bus.

14. The method of claim 12 wherein returning at least one of the multiple packets to the common bus comprises returning channel coded information to the bus to allow an appropriate transmitter to extract the information desired to be transmitted at the frequency associated with that transmitter.

15. The method of claim 12 wherein the plurality of transmitters operably couple with a fixed frequency combiner in a cellular radiotelephone base site.

16. In a wireless communication system, a method for facilitating communication of information between at least one information link and a plurality of receivers, said method comprising the steps of:

communicating multiple packets of received signal information from the plurality of receivers over a common communications bus to at least one processing unit;

processing at least a portion of the received signal information into at least a single traffic channel;

returning that single traffic channel to the common bus, such that both packets of received signal information and that single traffic channel are multiplexed on the common communications bus simultaneously; and

extracting at least a portion of the single traffic channel from the bus, for communication to the at least one information link.

17. A method for communicating baseband information from at least one processing unit to a plurality of transceivers, within a frequency hopping communication system, without the aid of baseband hopping equipment, said method comprising the steps of:

communicating baseband information over a common communications bus,

processing at least a portion of the baseband information at at least a first processing unit into at least one information packet,

communicating the at least one information packet back onto the bus, such that both baseband information and packetized baseband information are multiplexed on the common communications bus simultaneously,

extracting the at least one information packet from the bus by at least a second processing unit; and

routing the at least one information packet from the second processing unit to at least one of the plurality of transceivers, such that frequency hopping is facilitated without the aid of baseband hopping equipment.

18. The method of claim 17 wherein the bus comprises a TDM bus.

19. The method of claim 17 wherein processing comprises combining multiple packets transferred over the bus into a single traffic channel.

20. The method of claim 17 wherein the second processing unit comprises processing means for processing at least a portion of the baseband information.

21. A method for facilitating frequency hopping in a cellular radiotelephone communication system, without the aid of baseband hopping equipment, comprising the steps of:

transmitting signal information over a common communications bus,

receiving the signal information at at least a first processing unit,

generating a plurality of information packets at the at least first processing unit from the received signal information,

communicating the plurality of information packets back onto the bus, such that both signal information and packets of signal information are multiplexed on the bus simultaneously,

operably accessing the plurality of packets from the bus by a plurality of radio communication units, and

communicating the plurality of information packets at the frequencies associated with the plurality of accessing radio communication units, such that frequency hopping is achieved without the aid of baseband hopping equipment.

22. The method of claim 21 wherein each packet is communicated over a TDM bus and is assigned to a predetermined radio communication unit.

23. The method of claim 21 wherein the processing unit interfaces with both an RF transmitter and the TDM bus.

24. A device for communicating signal information from at least one information link to a plurality of communication units operating at various frequencies within a communication system, said device comprised of:

means for extracting at least a portion of the signal information transferred over a communications bus common to the at least one information link and the plurality of communication units;

means, operably coupled to the means for extracting, for processing the extracted signal information into a processed signal;

means, operably coupled to means for processing, for returning the processed signal back to the bus, such that both signal information and processed signals are multiplexed on the common communications bus simultaneously; and

means, coupled to the communications bus, for extracting at least a portion of the processed signal for communication to said plurality of communication units.

25. The device of claim 24 wherein the means for processing comprises:

means for partitioning the extracted signal information into multiple packets to be transmitted by the communication units at various fixed frequencies; and

means for combining the multiple packets into at least a single logical traffic channel.

26. The device of claim 24 wherein the means for processing is further comprised of at least one of:

encrypting means for encrypting signal information;

decrypting means for decrypting received signal information;

channel coding means for coding processed signals; and

channel decoding means for decoding processed signals.

27. The device of claim 24 wherein the plurality of communication units are selected from the group of devices consisting of:

transmitters,

receivers, and

transceivers.