Multicasting data method in a radio communication system

• US 20050147127A1
• Filed: 01/02/2004
• Published: 07/07/2005
• Est. Priority Date: 01/02/2004
• Status: Abandoned Application

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Burbidge, Richard C., Putcha, Padmaja, Stewart, Kenneth A., Cai, Zhijun
• Application Number:
  US10/751,057
• Publication Number:
  US 20050147127A1
• Time in Patent Office: Days
• US Class Current: 370/480
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

The present invention provides a method for receiving broadcast data in a system where broadcast data is transmitted on a plurality of frequencies. A user device monitors (302) a first frequency (108) for broadcast data to be transmitted on the first frequency. The device receives on the first frequency a notification of a broadcast data session which is to be sent on a second frequency (114) that is different from the first frequency. The device then determines a configuration associated with the second frequency and in accordance with receiving the broadcast data session and then configures (310) to receive the broadcast data session in accordance with the determined configuration. After receiving the broadcast data session, the device returns to monitoring the first frequency.

Claims

1. A method of camping in a device of communication system comprising:

camping on a first carrier frequency;

receiving, over the first carrier frequency, a frequency redirection message directing the device to camp on a second carrier frequency.

receiving a notification, on a control channel associated with the second carrier frequency, of the start of a data session on the second carrier frequency; and

camping on a second carrier frequency.

2. The method according to claim 1, further comprising camping on the first carrier frequency after a data session has been received on the second carrier frequency.

3. The method according to claim 1, wherein the frequency redirection message is sent on a broadcast channel of the first carrier frequency.

4. The method according to claim 2, wherein the frequency redirection message is a broadcast data service redirection message.

5. The method according to claim 4, wherein the frequency redirection message includes the parameters of a radio configuration for the second carrier frequency.

6. The method according to claim 4, wherein the parameters of a radio configuration for the second carrier frequency are store in a memory of the device.

7. The method according to claim 1, wherein the frequency redirection message is sent on a broadcast control channel (BCCH) of the first carrier frequency the device is camped on.

8. The method according to claim 1, wherein the control channel associate with the second carrier frequency is a multicast control channel (MCCH) on which the device is camped.

9. The method according to claim 1, wherein receiving a notification, on a multicast control channel (MCCH) associated with the second carrier frequency, of the start of a data session on the second carrier frequency receiving the notification prior to the start of the data session.

10. The method according to claim 2, further comprising:

determining a configuration associated with the second carrier frequency in accordance with receiving a broadcast data session; and

configuring the device to receive the broadcast data session in accordance with the determined configuration.

11. The method according to claim 10, further comprising receiving the broadcast data session on the second carrier frequency.

12. The method according to claim 10, further comprising:

receiving a first broadcast data set on the first frequency; and

simultaneously receiving a second broadcast data set on the second frequency.

13. A method of camping in a multiple frequency communication system, comprising:

transmitting an information message for a data session redirection to a second carrier frequency on a first carrier frequency, on which at least one mobile station is camped; and

sending a start of data session notification message on a plurality of control channels, at least one of which is associated with the second carrier frequency.

14. The method according to claim 13, wherein at least one of the plurality of control channels is a multicast control channel (MCCH).

15. The method according to claim 13, wherein the start of data session notification message is sent prior to the start of the data session.

16. A method for camping in a multi-frequency wireless communication system, comprising:

broadcasting over a BCCH to a mobile station on a first frequency semi-static information for the service redirection for a data session;

broadcasting over a plurality of multicast control channels (MCCH'"'"'s), a notification of the data session, prior to the start of the data session over the first frequency; and

camping on a second frequency associated with at least one MCCH of a plurality of MCCH'"'"'s.