Method and apparatus for providing communication services for communication system users having variable speed

• US 5,950,132 A
• Filed: 12/21/1997
• Issued: 09/07/1999
• Est. Priority Date: 12/21/1997
• Status: Expired due to Term

• Current Assignee: CDC Propriete Intellectuelle
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Armbruster, Peter J., Sowles, Ken, Neyens, Edward John
• Primary Examiner(s): Chin, Wellington
• Assistant Examiner(s): Woldetatios, Yemane
• Application Number:
  US09/010,299
• Time in Patent Office: 625 Days
• Field of Search: 455/435, 455/440, 455/441, 455/444, 455/456, 455/457, 455/512, 455/553, 455/432, 455/450, 455/427, 455/12.1
• US Class Current: 455/435.1
• CPC Class Codes: H04B 7/18545 Arrangements for managing station mobility, i.e. for station registration or localisation
• CPC Class Codes: H04W 4/027 using movement velocity, acceleration information
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 60/04 using triggered events
• CPC Class Codes: H04W 84/06 Airborne or Satellite Networks space-based or airborne stations H04B7/185

Abstract

A method and apparatus used by a communication system (100) to optimize the re-registration of communication system users that use a variable speed multiple-user communication unit (VSMCU) (110). VSMCUs (110) can be located on mobile vehicles, these mobile vehicles can move at different speeds at different times. VSMCUs (110) can collect registration information, obtain velocity information, determine re-registration distances, and determine re-registration factors. VSMCUs (110) send re-registration factors to the system. The system uses the re-registration factors to determine a modified ring-alert area for the associated VSMCU.

Claims

1. A method for providing communication services to communication system users associated with a vehicle, said communication system users using a variable speed multiple-user communication unit (VSMCU) associated with said vehicle to obtain communication services from a communication system, the method comprising said steps of:

determining a first location for said VSMCU;

determining a unit type for said VSMCU;

determining a velocity for said vehicle, said velocity being associated with said communication system users;

determining a re-registration factor for said communication system users based on said unit type and said velocity; and

creating at least one registration message which comprises said first location and said re-registration factor.

2. The method as claimed in claim 1, wherein said method further comprises the steps of:

performing a local registration for said communication system users; and

including individual registration information for said communication system users in said at least one registration message.

3. The method as claimed in claim 2, wherein said method further comprises the step of:

collecting individual registration information for individual users, said individual users using a local network coupled to said VSMCU to request registration with said communication system.

4. The method as claimed in claim 1, wherein said method further comprises the step of:

sending said at least one registration message to a control center in said communication system.

5. The method as claimed in claim 4, wherein said method further comprises the steps of:

receiving said at least one registration message;

establishing a first modified ring-alert area for said communication system users, said first modified ring-alert area being established using said first location and said re-registration factor; and

sending at least one first response message which comprises a first set of broadcast channels.

6. The method as claimed in claim 5, wherein said method further comprises the step of:

including a first location status for said VSMCU, a re-registration factor status for said VSMCU in said at least one first response message.

7. The method as claimed in claim 6, wherein said method further comprises the step of:

including registration status for said communication system users requesting registration in said at least one first response message.

8. The method as claimed in claim 5, wherein said method further comprises the step of:

receiving said at least one first response message from said control center in said communication system.

9. The method as claimed in claim 1, wherein said method further comprises the steps of:

monitoring at least one broadcast channel for a first amount of time;

determining a second location for said VSMCU;

establishing a re-registration distance based on said re-registration factor;

determining a difference between said first location and said second location;

sending at least one re-registration message to a control center in said communication system when said difference exceeds said re-registration distance, wherein said at least one re-registration message includes said second location; and

returning to said monitoring step when said difference does not exceed said re-registration distance.

10. The method as claimed in claim 9, wherein said method further comprises the step of:

determining said second location for said VSMCU based on said velocity and said first amount of time.

11. The method as claimed in claim 9, wherein said method further comprises the steps of:

receiving geo-location data from a geo-location device; and

determining a second location using said geo-location data.

12. The method as claimed in claim 9, wherein said method further comprises the steps of:

receiving said at least one re-registration message;

establishing a second modified ring-alert area for said communication system users, said second modified ring-alert area being established using said second location and said re-registration factor; and

sending at least one second response message which comprises a second set of broadcast channels and a second location status for said VSMCU.

13. The method as claimed in claim 12, wherein said method further comprises the step of:

receiving said at least one second response message from said control center in said communication system.

14. The method as claimed in claim 13, wherein said method further comprises the step of:

monitoring at least one of said second set of broadcast channels.

15. A method of operating a control center in a communication system to provide communication services to communication system users associated with a vehicle, said communication system users using a variable speed multiple-user communication unit (VSMCU) associated with said vehicle to obtain communication services from said communication system, said method comprising said steps of:

receiving, by said control center, at least one registration message, wherein said at least one registration message comprises a first location of said VSMCU and a first re-registration factor of said VSMCU;

establishing, by said control center, a first modified ring-alert area for said communication system users, said first modified ring-alert area being established using said first location and said first re-registration factor and said first modified ring-alert area being used to determine a first set of broadcast channels; and

sending, by said control center, at least one first response message to said VSMCU, wherein said at least one first response message comprises said first set of broadcast channels.

16. The method as claimed in claim 15, wherein said at least one registration message further comprises individual registration information for said communication system users.

17. The method as claimed in claim 16, wherein said method further comprises the step of:

including, by said control center, a first location status for said VSMCU, a re-registration factor status for said VSMCU in said at least one first response message.

18. The method as claimed in claim 17, wherein said method further comprises the step of:

including, by said control center, registration status for said communication system users requesting registration in said at least one first response message.

19. The method as claimed in claim 15, wherein said method further comprises the steps of:

receiving, by said control center, at least one re-registration message, said at least one re-registration message comprises a second location and a second re-registration factor;

establishing, by said control center, a second modified ring-alert area for said communication system users, said second modified ring-alert area being established using said second location and said second re-registration factor, said second modified ring-alert area being used to determine a second set of broadcast channels; and

sending, by said control center, at least one second response message to said VSMCU, wherein said at least one second response message comprises said second set of broadcast channels.

20. The method as claimed in claim 19, wherein said at least one re-registration message further comprises individual registration information for said communication system users.

21. The method as claimed in claim 20, wherein said method further comprises the step of:

including, by said control center, a first location status for said VSMCU, a re-registration factor status for said VSMCU in said at least one first response message.

22. The method as claimed in claim 21, wherein said method further comprises the step of:

including, by said control center, registration status for said communication system users requesting registration in said at least one second response message.

23. A method of operating a variable speed multiple-user communication unit (VSMCU) in a communication system to provide communication services to communication system users associated with a vehicle, said communication system users using said VSMCU to obtain communication services from said communication system, wherein said VSMCU is also associated with said vehicle, said method comprising the steps of:

a) determining a unit type for said VSMCU;

b) determining a first location for said VSMCU;

c) performing a local registration for said communication system users;

d) determining a velocity for said vehicle, said velocity being associated with said communication system users;

e) determining a re-registration factor for said communication system users based on said velocity; and

f) creating at least one registration message which comprises said unit type, said first location, said re-registration factor, and individual registration information for said communication system users.

24. The method as claimed in claim 23, wherein step c) further comprises the step of:

c1) collecting individual registration information for individual users, said individual users requesting registration with said communication system.

25. The method as claimed in claim 23, wherein said method further comprises the step of:

g) sending said at least one registration message to a control center in said communication system.

26. The method as claimed in claim 25, wherein said method further comprises the step of:

h) receiving at least one first response message from said control center in said communication system which comprises a first set of broadcast channels, a unit type data status for said VSMCU, a first location status for said VSMCU, a re-registration factor status for said VSMCU, and a registration status for said communication system users requesting registration.

27. The method as claimed in claim 26, wherein said method further comprises the steps of:

i) obtaining a second location for said VSMCU based on said velocity and a fixed amount of time;

j) establishing a re-registration distance based on said re-registration factor;

k) determining a difference between said first location and said second location; and

l) sending at least one re-registration message to said control center in said communication system when said difference exceeds said re-registration distance, wherein said at least one re-registration message includes said second location.

28. The method as claimed in claim 27, wherein said method further comprises the step of:

m) monitoring said first set of broadcast channels when difference does not exceed said re-registration distance.

29. The method as claimed in claim 25, wherein said method further comprises the step of:

h) receiving at least one second response message from said control center in said communication system which comprises a second set of broadcast channels.

30. The method as claimed in claim 29, wherein said method further comprises the step of:

i) monitoring said second set of broadcast channels.

31. The method as claimed in claim 23, wherein step e) and step f) are replaced by the steps of:

e) determining a re-registration distance for said communication system users based on said velocity; and

f) creating at least one registration message which comprises said unit type, said first location, said re-registration distance, and individual registration information for said communication system users.

32. A variable speed multiple-user communication unit (VSMCU), said VSMCU being located with a vehicle to provide communication services to at least one communication system user, comprising:

a) a transceiver for establishing at least one communication link with a communication system;

b) a processor coupled to said transceiver, said processor for determining a first and second location for said VSMCU, a unit type for said VSMCU, a velocity for said vehicle, and first and second re-registration factors for said VSMCU based on said unit type and said velocity, for creating at least one registration message, for creating at least one re-registration message, sending said at least one registration message to said transceiver, sending said at least one re-registration message to said transceiver;

c) a memory device coupled to said processor for storing said first and second location, said unit type, said velocity, and said first and second re-registration factors, said at least one registration message, and said at least one re-registration message; and

d) a local network interface coupled to said processor, said local network interface for interfacing between said processor and at least one local network.

33. The VSMCU as claimed in claim 32, wherein said VSMCU further comprises:

a geo-location device for providing location information.

34. A control center in a communication system, comprising:

an earth terminal for receiving at least one registration message from a variable speed multiple-user communication unit (VSMCU) and for transmitting at least one first response message to said VSMCU; and

an earth terminal controller coupled to said earth terminal, said earth terminal controller for processing said at least one registration message which comprises a first location of said VSMCU and a first re-registration factor of said VSMCU, for determining a first modified ring-alert area, for determining a first set of broadcast channels, for processing said at least one first response message.

35. The control center as claimed in claim 34, wherein said earth terminal further comprises means for receiving at least one re-registration message from a multiple-user communication unit (VSMCU) and for transmitting at least one second response message to said VSMCU.

36. The control center as claimed in claim 35, wherein said earth terminal controller further comprises means for processing said at least one re-registration message which comprises a second location and a second re-registration factor, for determining a second modified ring-alert area, for determining a second set of broadcast channels, for processing said at least one second response message.