Method and system for signaling in broadcast communication system

• US 20030114177A1
• Filed: 08/20/2001
• Published: 06/19/2003
• Est. Priority Date: 08/20/2001
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Tiedemann, Edward G. Jr., Wang, Jun, Chen, Tao, Sinnarajah, Ragulan, Bender, Paul E.
• Granted Patent: US 6,980,820 B2
• Time in Patent Office: Days
• US Class Current: 455/515
• CPC Class Codes: H04H 20/28 Arrangements for simultaneous broadcast of plural pieces of information
• CPC Class Codes: H04H 20/72 of terrestrial networks
• CPC Class Codes: H04H 40/27 specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
• CPC Class Codes: H04H 60/91 Mobile communication networks for accessing the Internet H04H60/85
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems

Abstract

A method and a system for providing signaling in cellular telephone system providing broadcast services to fully integrate broadcast services with the services provided by the cellular telephone systems. The signaling method coordinate interaction between an access network and the subscriber station to allowing the subscriber station to decode the broadcast service, to receive paging messages while receiving the broadcast service, to properly transition between operation states, and other functions known to one of ordinary skill in the art.

Claims

1. A method for a subscriber station registration in a broadcast communication system, comprising:

receiving a HSBS channel modulating a first frequency; and

monitoring a timer status for the HSBS channel, and if the timer status is expired;

performing a broadcast service registration with a sector transmitting the HSBS channel;

setting status of the timer for the HSBS channel to enabled; and

starting a timer for the HSBS channel.

2. The method as claimed in claim 1 wherein performing a broadcast service registration with a sector transmitting the HSBS channel further comprises:

transmitting a paging identifier to the sector.

3. The method as claimed in claim 2 wherein transmitting a paging identifier to the sector further comprises:

transmitting an identifier of the HSBS channel monitored by the subscriber station to the sector.

4. The method as claimed in claim 2 wherein transmitting a paging identifier to the sector further comprises:

transmitting an identifier of the frequency monitored by the subscriber station to the sector.

5. The method as claimed in claim 1, further comprising setting timer status to expired for all HSBS channels upon power-up of the subscriber station.

6. A method for a subscriber station registration in a broadcast communication system, comprising:

receiving a broadcast service registration from the subscriber station at a sector;

adding a paging identifier to the subscribers'"'"' station paging set; and

starting a timer for the paging identifier.

7. The method as claimed in claim 6, further comprising:

monitoring a timer status of all paging identifiers for all subscriber stations'"'"' paging sets, and if a timer status of a paging identifier for a subscriber station is expired, then removing the paging identifier from the subscriber'"'"'s station paging set.

8. The method as claimed in claim 6, further comprising adding an identifier for the frequency that the subscriber station monitors upon power-up to the subscribers'"'"' station paging set

9. The method as claimed in claim 6 wherein adding a paging identifier to the subscribers'"'"' station paging set comprises:

adding an identifier of the HSBS channel monitored by the subscriber station to the subscribers'"'"' station paging set

10. The method as claimed in claim 6 wherein adding an identifier to the subscribers'"'"' station paging set comprises:

adding an identifier of a frequency modulated by the HSBS channel monitored by the subscriber station to the subscribers'"'"' station paging set

11. A method for paging a subscriber station in a broadcast communication system, comprising:

determining a status of the subscriber station'"'"'s paging set;

determining paging channels on which to page the subscriber station in accordance with the determined status of the subscriber station'"'"'s paging set; and

paging the subscriber station on all determined paging channels.

12. The method as claimed in claim 11 wherein said determining a status of the subscriber station'"'"'s paging set comprises:

receiving at a subscriber station a HSBS channel modulating a first frequency;

monitoring at a subscriber station a timer status for the HSBS channel, and if the timer status is expired, then;

performing a broadcast service registration with a sector transmitting the HSBS channel;

setting status of the timer for the HSBS channel to enabled; and

starting a first timer for the HSBS channel;

receiving at the sector the broadcast service registration from the subscriber station;

adding at the sector a paging identifier to the subscribers'"'"' station paging set;

starting at the sector a second timer for the paging identifier;

monitoring at the sector a timer status of all paging identifiers for all subscriber stations'"'"' paging sets, and if a timer status of a paging identifier for a subscriber station is expired, then removing the paging identifier from the subscriber'"'"'s station paging set.

13. The method as claimed in claim 11 wherein said determining a paging channel on which to page the subscriber station in accordance with the determined status of the subscriber station'"'"'s paging set comprises:

determining frequencies on which to page the subscriber station in accordance with paging identifiers contained in the subscriber station paging set;

determining paging channels on which to page the subscriber station for each of the frequencies; and

paging the subscriber station on all determined paging channels.

14. The method as claimed in claim 11 wherein said determining a status of the subscriber station'"'"'s paging set comprises:

transmitting from the subscriber station a first notification of a desire to receive a broadcast channel;

transmitting from the subscriber station a second notification a desire to cease broadcast channel reception;

adding a paging identifier to the subscriber station paging set upon receiving the first notification; and

removing the paging identifier from the subscriber station paging set upon receiving the second notification.

15. The method as claimed in claim 14, further comprising:

transmitting from the sector permission to receive the broadcast channel in response the first notification; and

receiving at the subscriber station the broadcast channel after receiving the permission

16. The method as claimed in claim 11 wherein said determining a status of the subscriber station'"'"'s paging set comprises:

transmitting from the subscriber station a notification of a desire to receive a broadcast channel modulating a second frequency different from the first frequency monitored by the subscriber station;

removing an identifier of the first frequency from the subscriber station paging set upon receiving the notification; and

adding an identifier of the first frequency to the subscriber station paging set upon receiving the first notification.

17. The method as claimed in claim 16, further comprising:

transmitting from the sector permission to receive the broadcast channel in response the first notification; and

receiving at the subscriber station the broadcast channel after receiving the permission.

18. A method for paging a subscriber station in a broadcast communication system, comprising:

modulating all frequencies of a sector with a broadcast channel;

determining paging channels on which to page the subscriber station for each of the frequencies; and

paging the subscriber station on all determined paging channels.

19. A method for paging a subscriber station in a broadcast communication system, comprising:

determining a frequency that the subscriber station monitors upon power-up;

determining all frequencies modulated by broadcast channels;

determining paging channels on which to page the subscriber station for each of the frequencies; and

paging the subscriber station on all determined paging channels.

20. A method for paging a subscriber station in a broadcast communication system, comprising:

determining a frequency that the subscriber station monitors upon power-up, and if at least one broadcast channel is transmitted, then;

determining all frequencies modulated by the at least one broadcast channels to which the subscriber station is subscribed;

determining paging channels on which to page the subscriber station for each of the frequencies; and

paging the subscriber station on all determined paging channels.

21. The method as claimed in claim 20, further comprising:

determining paging channel on which to page the subscriber station for a frequency that the subscriber station monitors upon power-up; and

paging the subscriber station on the determined paging channel if no broadcast channel is transmitted.

22. A method for assigning frequencies to a subscriber station upon power-up in a broadcast communication system, comprising:

assigning a subscriber station to any of the frequencies transmitted by a sector in accordance with a hashing function if no broadcast channel is transmitted.

23. The method as claimed in claim 22 further comprising:

assigning a subscriber station subscribed to a broadcast channel to the frequencies transmitted by a sector modulated by the broadcast channel in accordance with a hashing function if broadcast channel is transmitted.

24. A method for providing broadcast parameters in a broadcast communication system, comprising:

receiving at each subscriber station in an idle state a first channel containing a message;

decoding at each subscriber station a header of the message; and

decoding the remainder of the message only at the subscriber stations interested in a broadcast service.

25. The method as claimed in claim 24 wherein said receiving at each subscriber station in an idle state a first channel containing a message comprises:

receiving at each subscriber station in an idle state a channel provided by a communication system for overhead messages.

26. The method as claimed in claim 24 further comprising:

receiving at each subscriber station interested in a broadcast service in a dedicated mode state a separate channel containing a message; and

decoding at the subscriber station the message.

27. The method as claimed in claim 26 wherein said receiving a first channel containing a message at each subscriber station in an idle state comprises:

receiving at each subscriber station in an idle state a dedicated channel.

28. A method for providing broadcast parameters in a broadcast communication system, comprising:

transmitting from a sector a message in a first channel;

receiving at each subscriber station in an idle state the first channel;

decoding at each subscriber station a header of the message;

decoding the remainder of the message only at the subscriber stations interested in a broadcast service; and

failing to receive the first channel at each subscriber station in a dedicated mode.

29. The method as claimed in claim 28, wherein said transmitting from a sector a message in a first channel comprises:

transmitting from the sector a channel provided by a communication system for overhead messages.

30. The method as claimed in claim 29, further comprising:

transmitting from the sector a separate channel containing the message to each subscriber station interested in a broadcast service in a dedicated mode; and

decoding the message at each subscriber station interested in a broadcast service in a dedicated mode.

31. The method as claimed in claim 30, wherein said transmitting from the sector a separate channel containing the message to each subscriber station interested in a broadcast service in a dedicated mode comprises:

transmitting from the sector a dedicated channel.