Scheduling of broadcast message transmission to increase paging capacity

• US 20070153719A1
• Filed: 12/29/2005
• Published: 07/05/2007
• Est. Priority Date: 12/29/2005
• Status: Abandoned Application

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Gopal, Thawatt
• Application Number:
  US11/321,612
• Publication Number:
  US 20070153719A1
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04W 48/12 using downlink control channel

Abstract

Broadcast control messages are repetitively transmitted to said mobile stations over successive control channel cycles to meet minimum recommended periodicity requirements. To increase paging capacity, the frequency of one or more of the broadcast control messages may be varied to avoid unfavorable pairings of the broadcast control messages within a single control channel cycle.

Claims

1. A method implemented in a mobile communication network of scheduling the transmission of broadcast control messages to mobile stations, said method comprising:

repetitively transmitting said broadcast control messages to said mobile stations over successive control channel cycles to meet minimum recommended periodicity requirements for said broadcast control messages; and

varying a broadcast interval between successive transmissions of one or more selected broadcast control messages to avoid unfavorable pairings of said broadcast control messages within a single control channel cycle.

2. The method of claim 1 wherein said broadcast control messages are transmitted according to a fixed broadcast pattern that repeats over a defined broadcast control period comprising a plurality of control channel cycles.

3. The method of claim 2 wherein said broadcast control messages are transmitted according to a broadcast pattern that is dynamically variable.

4. The method of claim 3 wherein said selected broadcast control messages for which said broadcast intervals are varied are dynamically chosen depending on message size.

5. The method of claim 1 wherein said broadcast control messages are sent over a common control channel along with unicast control messages.

6. The method of claim 5 wherein varying an interval between successive transmissions of one or more selected broadcast control messages to avoid unfavorable pairings of said broadcast control messages within a single control channel cycle comprises varying the broadcast interval for selected broadcast control messages to avoiding pairings of large messages so as to increase a remaining capacity in said control channel cycle for transmission of unicast control messages.

7. The method of claim 1 wherein said mobile communication network comprises an HRPD network.

8. The method of claim 7 wherein said set of broadcast control messages include an Access Parameters message and a Sector Parameters message.

9. The method of claim 6 wherein varying an interval between successive transmissions of one or more selected broadcast control messages to avoid unfavorable pairings of said broadcast control messages within a single control channel cycle comprises varying the broadcast interval for said Access Parameters message to avoid paring with said Sector Parameters messages in the same control channel cycle.

10. A radio base station in a mobile communication network for communicating with mobile stations, said radio base station comprising:

at least one transmitter for repetitively transmitting broadcast control messages to said mobile stations over successive control channel cycles so as to satisfy minimum periodicity requirements for said broadcast control messages; and

a control unit operatively connected to said transmitter, said control unit operative to vary a broadcast interval between successive transmissions of one or more selected broadcast control messages to avoid unfavorable pairings of said broadcast control messages within a single control channel cycle.

11. The radio base station of claim 10 wherein said broadcast control messages are transmitted according to a fixed broadcast pattern that repeats over a defined broadcast control period comprising a plurality of control channel cycles.

12. The radio base station of claim 11 wherein said broadcast control messages are transmitted according to a broadcast pattern that is dynamically variable.

13. The radio base station of claim 12 wherein said selected broadcast control messages for which said broadcast intervals are varied are dynamically chosen depending on message size.

14. The radio base station of claim 10 wherein said broadcast control messages are sent over a common control channel along with unicast control messages.

15. The radio base station of claim 14 wherein varying an interval between successive transmissions of one or more selected broadcast control messages to avoid unfavorable pairings of said broadcast control messages within a single control channel cycle comprises varying the broadcast interval for selected broadcast control messages to avoiding pairings of large messages so as to increase a remaining capacity in said control channel cycle for transmission of unicast control messages.

16. The radio base station of claim 10 wherein said mobile communication network comprises an HRPD network.

17. The radio base station of claim 16 wherein said set of broadcast control messages include an Access Parameters message and a Sector Parameters message.

18. The radio base station of claim 15 wherein varying an interval between successive transmissions of one or more selected broadcast control messages to avoid unfavorable pairings of said broadcast control messages within a single control channel cycle comprises varying the broadcast interval for said Access Parameters message to avoid paring with said Sector Parameters messages in the same control channel cycle.