Layered channel element in a base station modem for a CDMA cellular communication system

• US 5,511,067 A
• Filed: 06/17/1994
• Issued: 04/23/1996
• Est. Priority Date: 06/17/1994
• Status: Expired due to Term

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Miller, David S.
• Primary Examiner(s): Kizou, Hassan
• Application Number:
  US08/261,539
• Time in Patent Office: 676 Days
• Field of Search: 370/18, 370/95.1, 370/95.3, 370/110.1, 375/205, 379/59, 379/60, 379/63, 455/33.1, 455/33.2, 455/54.1, 455/56.1
• US Class Current: 370/335
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

The invention provides a layered channel software element which supervises the operation of channel element modem resources in a CDMA cellular telephone system that includes forward channels for conveying message and signalling data from a CDMA system base station to mobile units and reverse channels for conveying message and signalling data from mobile units to base stations. Each channel is implemented in a channel element including a general purpose processor and a modem application-specific integrated circuit ASIC. The layered channel software element executes on the general processor. The layered channel software element provides a structure and function for transferring message and signalling data between the telecommunication system and the modem ASIC and also for establishing channel operations by providing channel configuration information to the modem ASIC.

Claims

1. A method of connecting a telecommunication network to a telecommunication system, the telecommunication system including:

a plurality of telecommunication facilities for distributing forward message and signaling data from the telecommunication network to telecommunication system users and for directing reverse message and signaling data from telecommunication system users to the telecommunication network;

a control means for switching message and signaling data between the telecommunication network and the plurality of telecommunication facilities;

a plurality of independent, not necessarily uniform, general processors to run respective modem programs for receiving and transferring forward message and signaling data and for receiving and transferring reverse message and signaling data; and

a plurality of modem apparatuses for modulating forward message and signaling data for distribution to telecommunication system users and for demodulating reverse message and signaling data for provision to the telecommunication network;

wherein, each telecommunication facility includes;

one or more general processors, each general processor of the one or more general processors coupled to the control means;

one or more modem apparatuses; and

one or more interfaces, each interface connecting a respective general processor of the one or more general processors with a respective modem apparatus of the one or more modem apparatuses and including signal connections and control functions that are specific to the respective general processor of the one or more general processors;

the method including the steps of;

running a modem program in a general processor to receive and transfer forward message and signaling data and to receive and transfer reverse message and signaling data;

issuing messages from the modem program to the control means to provide reverse message and signaling data;

receiving messages from the control means that include forward message and signaling data;

formatting the forward message and signaling data; and

the respective modem program calling interface control functions to provide forward message and signaling data to, and receive reverse message and signaling data from, signal connections of a respective interface that connects the general processor with the modem apparatus.

2. The method of claim 1, wherein the modem program includes:

pilot channel means for generating a pilot code sequence;

synchronization channel means for generating a repeating synchronization message;

paging channel means for receiving forward signaling data from the control means;

traffic channel means for receiving forward message data from the control means; and

driver means for coupling the pilot channel means, synchronization channel means, paging channel means, and traffic channel means to the respective interface;

the step of running a modem program including;

operating one or more of the pilot channel means, the synchronization channel means, and the paging channel means;

or

operating the traffic channel means; and

coupling the pilot code sequence, the synchronization message, and forward signaling data, or forward message data to the respective interface.

3. The method of claim 1, wherein the modem program includes:

access channel means for receiving reverse signaling data from the respective interface;

traffic channel means for receiving reverse message data from the respective interface; and

driver means for coupling the access channel means and the traffic channel means to the respective interface;

the step of running a modem program including;

operating the access channel means;

or

operating the traffic channel means; and

coupling reverse signaling data to the access channel means or coupling reverse message data to the traffic channel means.

4. The method of claim 2, wherein the modem program further includes:

access channel means for receiving reverse signaling data from the respective interface;

and, wherein;

the traffic channel means is further for receiving reverse message data from the respective interface; and

the driver means is further for coupling reverse signaling data from the respective interface to the access channel means and for coupling reverse message data from the respective interface to the traffic channel means;

the step of running a modem program including;

operating the pilot channel means and synchronization channel means; and

coupling the pilot code sequence and the synchronization message to the respective interface.

5. The method of claim 2, wherein the modem program further includes:

access channel means for receiving reverse signalling data from the respective interface;

and, wherein;

the traffic channel means is further for receiving reverse message data from the respective interface; and

,

the driver means is further for coupling reverse signalling data from the respective interface to the access channel means and for coupling reverse message data from the respective interface to the traffic channel means;

the step of running a modem program including;

operating the pilot channel means and paging channel means; and

coupling the pilot code sequence and forward signalling data to the respective interface.

6. The method of claim 2, wherein the modem program further includes:

access channel means for receiving reverse signalling data from the respective interface;

and, wherein;

the traffic channel means is further for receiving reverse message data from the respective interface; and

the driver means is further for coupling reverse signalling data from the respective interface to the access channel means and for coupling reverse message data from the respective interface to the traffic channel means;

the step of running a modem program including;

operating the access channel means and coupling reverse signalling data from the respective interface to the access channel means.

7. The method of claim 2, wherein the modem program further includes:

access channel means for receiving reverse signalling data from the respective interface;

and, wherein;

the traffic channel means is further for receiving reverse data message from the respective interface; and

the driver means is further for coupling reverse signalling data from the respective interface to the access channel means and for coupling reverse message data from the respective interface to the traffic channel means;

the step of running the modem program including;

operating the traffic channel means;

coupling forward message data from the traffic channel to the respective interface; and

of coupling reverse message data from the respective interface to the traffic channel means.

8. The method of claim 1, wherein the modem program includes:

traffic channel means for receiving forward message data from the control means and for receiving reverse message data from the respective interface; and

driver means for coupling the traffic channel means to the respective interface;

the step of running a modem program including;

operating the traffic channel means;

coupling forward message data from the traffic channel means to the respective interface; and

coupling reverse message data from the respective interface to the traffic channel means.

9. The method of claim 1, wherein the modem program includes:

pilot channel means for generating a pilot sequence; and

driver means for coupling the pilot channel means to the respective interface;

the step of running a modem program including;

operating the pilot channel means; and

coupling the pilot code sequence to the respective interface.

10. A telecommunications interface system, to connect:

a telecommunication network;

with

a telecommunication system for distributing forward message and signaling data from the telecommunication network to telecommunication system users and for directing reverse message and signaling data from telecommunication system users to the telecommunication network;

the telecommunications interface system comprising;

a control means connected to the telecommunication network and to the telecommunication system for switching message and signaling data therebetween; and

a plurality of telecommunication facilities connected to the control means, each telecommunication facility including;

one or more independent but not necessarily uniform general processors to run respective modem programs for receiving forward message and signaling data and for receiving reverse message and signaling data;

one or more modem apparatuses for modulating forward message and signaling data for distribution to the telecommunication system users and for demodulating reverse message and signaling data for provision to the telecommunication network;

one or more interfaces, each interface connecting a respective general processor of the one or more general processors with a respective modem apparatus of the one or more modem apparatuses and including signal connections and control functions that are specific to the respective general processor; and

each modem program executing in a general processor of the one or more general processors to receive forward message and signaling data and to receive reverse message and signaling data by;

issuing messages to the control means that include reverse message and signaling data;

receiving messages from the control means that include forward message and signaling data;

executing in its own process space the control functions of an interface to provide forward message and signaling data to the signal connections of the interface and to receive the demodulated reverse message and signaling data from the signal connections of the interface.

11. The telecommunications interface system of claim 10, wherein each modem program includes:

pilot channel means for generating a pilot code sequence;

synchronization channel means for generating a repeating synchronization message;

paging channel means for receiving forward signalling data from the control means;

traffic channel means for receiving forward message data from the control means; and

driver means for coupling the pilot channel means, synchronization channel means, paging channel means, and traffic channel means to the interface.

12. The telecommunications interface system of claim 11, wherein the modem program concurrently operates the pilot channel means and the synchronization channel means, whereby the pilot code sequence and the synchronization message are coupled to the interface.

13. The telecommunications interface system of claim 11, wherein the modem program operates the pilot channel means and the paging channel means, whereby the pilot code sequence and forward signalling data are coupled to the interface.

14. The telecommunications interface system of claim 10, wherein the modem program includes:

access channel means for receiving reverse signalling data from the interface;

traffic channel means for receiving reverse message data from the interface; and

driver means for coupling the access channel means or the traffic channel means to the interface;

whereby reverse signalling data is coupled to the access channel means or reverse message data is coupled to the traffic channel means.

15. The telecommunications interface system of claim 10, wherein the modem program means includes:

traffic channel means for receiving forward message data from the control means and for receiving reverse message data from the interface; and

driver means for coupling the traffic channel means to the interface;

whereby forward signalling data is coupled from the traffic channel means to the interface and reverse message data is coupled from the interface to the traffic channel means.

16. The telecommunications interface system of claim 10, wherein the modem program includes:

pilot channel means for generating a pilot code sequence; and

driver means for coupling the pilot channel means to the interface.

17. The telecommunications interface system of claim 10, wherein the modem program includes:

synchronization channel means for generating a repeating synchronization message; and

driver means for coupling the synchronization channel means to the interface.

18. The telecommunications interface system of claim 10, wherein the modem program includes:

paging channel means for receiving signalling data from the control means; and

driver means for coupling the paging channel means to the interface.

19. The telecommunications interface system of claim 10, wherein the modem program includes:

access channel means for receiving a reverse signalling data from the interface; and

driver means for coupling the access channel means to the interface.

20. A telecommunications interface system, to connect:

a telecommunication network;

with

a telecommunication system for distributing forward message and signalling data from the telecommunication network in forward channels to telecommunication users and for directing reverse message and signalling data in reverse channels from telecommunication system users to the telecommunication network;

the telecommunications interface system comprising;

a control means connected to the telecommunication network and to the telecommunication system for switching message and signalling data therebetween, and for providing channel commands representing forward and reverse channels;

a plurality of telecommunication facilities connected to the control means, each telecommunication facility including;

one or more independent but not necessarily uniform general processors to run respective modem programs;

one or more modem apparatuses for modulating forward message and signalling data for distribution to the telecommunication system users in forward channels and for demodulating reverse message and signalling data in reverse channels for provision to the telecommunication network;

one or more interfaces, each interface connecting a respective general processor of the one or more general processors with the respective modem apparatus of the one or more modem apparatuses and including signal connections and control functions that are specific to the respective general processors; and

each modem program for executing in a general processor of the one or more general processors to receive channel commands from the control means to establish forward channels and reverse channels in response to the channel commands by;

providing the channel configuration information to a respective modem apparatus coupled by a respective interface to the general processor of the one or more general processors in which the modem program executes.

21. The telecommunications interface system of claim 20, wherein each modem program includes:

pilot channel means for generating pilot channel configuration information;

synchronization channel means for generating synchronization channel configuration information;

paging channel means for generating paging channel configuration information;

traffic channel means for generating traffic channel configuration information; and

driver means for coupling the pilot channel means, synchronization channel means, paging channel means, and traffic channel means to the interface.

22. The telecommunications interface system of claim 21 wherein the modem program concurrently operates the pilot channel means and the synchronization channel means, whereby the pilot channel configuration information and the synchronization channel configuration information are coupled to the interface.

23. The telecommunications interface system of claim 21, wherein the modem program operates the pilot channel means and the paging channel means, whereby the pilot channel configuration information and the paging channel configuration information are coupled to the interface.

24. The telecommunications interface system of claim 20, wherein the modem program includes:

access channel means for generating access channel configuration information;

traffic channel means for generating traffic channel configuration information;

driving means for coupling the access channel means or the traffic channel means to the interface; and

whereby, access channel configuration information or traffic channel configuration information is coupled to the interface.

25. The telecommunications interface system of claim 20, wherein the modem program includes:

traffic channel means for generating traffic channel configuration information;

driver means for coupling the traffic channel configuration information to the interface; and

whereby traffic channel configuration information is coupled from the traffic channel means to the interface.

26. The telecommunications interface system of claim 20, wherein the modem program includes:

pilot channel means for generating pilot channel configuration information; and

driver means for coupling the pilot channel configuration information to the interface.

27. The telecommunications interface system of claim 20, wherein the modem program includes:

synchronization channel means for generating synchronization channel configuration information; and

driver means for coupling the synchronization channel configuration information to the interface.

28. The telecommunications interface system of claim 20, wherein the modem program includes:

paging channel means for generating paging channel configuration information; and

driver means for coupling the paging channel configuration information to the interface.

29. The telecommunications interface system of claim 20, wherein the modem program includes:

access channel means for generating access channel configuration information; and

driver means for coupling the access channel configuration information to the interface.

30. A method of connecting a telecommunication network to a telecommunication system, the telecommunication system including:

a plurality of telecommunication facilities for distributing forward message and signalling data from the telecommunication network in forward channels to telecommunication user and for directing reverse message and signalling data in reverse channels from telecommunication system users to the telecommunication network;

control means for switching message and signalling data between the telecommunication network and the plurality of telecommunication facilities and for providing channel commands representing forward and reverse channels;

a plurality of independent, not necessarily uniformed, general processors to run respective modem programs; and

a plurality of modem apparatuses responsive to channel configuration information for modulating forward message and signalling data for distribution to the telecommunication system users in forward channels and for demodulating reverse message and signalling data in reverse channels for provision to the telecommunication network;

wherein, each telecommunication facility includes;

one or more general processors, each general processor of the one or more general processors coupled to the control means;

one or more modem apparatuses; and

one or more interfaces, each interface connecting a respective general processor of the one or more general processors with a respective modem apparatus of the one or more modem apparatuses and including signal connections and control functions that are specific to the respective general processor of the one or more general processors;

the method including the steps of;

running a modem program in a general processor to receive channel commands representing forward and reverse channels;

providing the channel configuration information to a respective modem apparatus coupled by a respective interface to the general processor of the one or more general processors in which the modem program executes.

31. The method of claim 30, wherein the modem program includes:

pilot channel means for generating pilot channel configuration information;

synchronization channel means for generating synchronization channel configuration information;

paging channel means for generating paging channels configuration information;

traffic channel means for generating traffic channel configuration information; and

driver means for coupling the pilot channel means, synchronization channel means, paging channel means, and traffic channel means to the respective interface;

the step of running a modem program including;

operating one or more of the pilot channel means, the synchronization channel means, and the paging channel means;

or

operating the traffic channel means; and

coupling the pilot channel configuration information, the synchronization channel configuration information, and paging channel configuration information;

or

coupling traffic channel configuration information to the respective interface.

32. The method of claim 30, wherein the modem program includes:

access channel means for generating access channel configuration information;

traffic channel means for generating traffic channel configuration information;

driver means for coupling the access channel means and the traffic channel means to the respective interface;

the step of running a modem program including;

operating the access channel means;

or

operating the traffic channel means; and

coupling access channel configuration information or traffic channel configuration information to the respective interface.

33. The method of claim 30, wherein the modem program means includes:

traffic channel means for generating traffic channel configuration information; and

driver means for coupling the traffic channel means to the respective interface;

the step of running a modem program including;

operating the traffic channel means; and

coupling the traffic channel configuration information from the traffic channel means to the respective interface.

34. The method of claim 30, wherein the modem program includes:

pilot channel means for generating pilot channel configuration information; and

driver means for coupling the pilot channel means to the respective interface;

the step of running a modem program including;

operating the pilot channel means; and

coupling the pilot channel configuration information to the respective interface.