Interrupting use of frequency layer convergence scheme
The present invention is directed to interrupting use of a frequency layer convergence scheme that favors selection of a cell on a preferred frequency of a joined point-to-multipoint service. Specifically, a mobile terminal that has joined a point-to-multipoint service having a preferred frequency uses a frequency layer convergence scheme for selecting a cell. The frequency layer convergence scheme favors the selection of a cell on the preferred frequency layer. However, use of the frequency layer convergence scheme is interrupted upon an occurrence of a trigger.
1. A method of frequency selection for an MBMS (Multimedia Broadcast/Multicast Service) service, the method performed by a mobile terminal and comprising:
receiving a message that instructs an interruption of a MBMS frequency selection procedure, wherein the message initiates a reconfiguration procedure; and
stopping the MBMS frequency selection procedure if the mobile terminal is not in CELL_DCH state,
wherein the MBMS frequency selection procedure allows the mobile terminal to select a preferred frequency of the MBMS service.
2. The method of claim 1 , wherein the received message includes a specific value that is used to stop the MBMS frequency selection procedure.
3. The method of claim 1 , wherein the mobile terminal is not in CELL_DCH state means that the mobile terminal is in CELL_FACH state, in CELL_PCH state, in URA_PCH state or in idle mode.
4. The method of claim 1 , wherein the MBMS frequency selection procedure uses a frequency layer convergence scheme for selecting a cell, wherein the frequency layer convergence scheme favors the selection of the cell on the preferred frequency of the MBMS service.
5. The method of claim 1 , wherein the use of the frequency layer convergence scheme is interrupted upon receiving the message that initiates the reconfiguration procedure.
6. The method of claim 5 , wherein a trigger for interrupting the use of the frequency layer convergence scheme is based on a procedure initiated with a network that fails while using the frequency layer convergence scheme.
7. The method of claim 6 , wherein the procedure with the network comprises establishing a connection with a core network (CN) domain, wherein the CN domain is at least a packet switched (PS) domain or a circuit switched (CS) domain.
8. The method of claim 6 , wherein the procedure with the network comprises at least:
a PRACH access procedure;
a radio resource control (RRC) procedure for transmitting information to the network;
a medium access control (MAC) procedure for transmitting data to the network; or
a procedure for selecting a cell on a given frequency according to an order received from the network.
9. The method of claim 5 , wherein a trigger for interrupting the use of the frequency layer convergence scheme comprises:
initiating a procedure for selecting a cell on a given frequency according to an order received from the network.
10. A mobile terminal that performs frequency selection for an MBMS (Multimedia Broadcast/Multicast Service) service, the mobile terminal comprising:
means for receiving a message that instructs an interruption of a MBMS frequency selection procedure, wherein the message initiates a reconfiguration procedure; and
means for stopping the MBMS frequency selection procedure if the mobile terminal is not in CELL_DCH state,
wherein the MBMS frequency selection procedure allows the mobile terminal to select a preferred frequency of the MBMS service.
11. The mobile terminal of claim 10 , wherein the received message includes a specific value that is used to stop the MBMS frequency selection procedure.
12. The mobile terminal of claim 10 , wherein the mobile terminal is not in CELL_DCH state means that the mobile terminal is in CELL_FACH state, in CELL_PCH state, in URA_PCH state or in idle mode.
13. The mobile terminal of claim 10 , wherein the MBMS frequency selection procedure uses a frequency layer convergence scheme for selecting a cell, wherein the frequency layer convergence scheme favors the selection of the cell on the preferred frequency of the MBMS service.
14. The mobile terminal of claim 13 , wherein the use of the frequency layer convergence scheme is interrupted upon receiving the message that initiates the reconfiguration procedure.
15. A method of transmitting a message in order for a mobile terminal to perform frequency selection for an MBMS (Multimedia Broadcast/Multicast Service) service, the method performed by a network and comprising:
transmitting the message that instructs an interruption of a MBMS frequency selection procedure, wherein the message initiates a reconfiguration procedure,
wherein the mobile terminal stops the MBMS frequency selection procedure according to the transmitted message if the mobile terminal is not in CELL_DCH state, and
wherein the MBMS frequency selection procedure allows the mobile terminal to select a preferred frequency of the MBMS service.
16. The method of claim 15 , wherein the transmitted message includes a specific value that is used to stop the MBMS frequency selection procedure.
17. The method of claim 15 , wherein the mobile terminal is not in CELL_DCH state means that the mobile terminal is in CELL_FACH state, in CELL_PCH state, in URA_PCH state or in idle mode.
18. The method of claim 15 , wherein the MBMS frequency selection procedure uses a frequency layer convergence scheme for selecting a cell, wherein the frequency layer convergence scheme favors the selection of the cell on the preferred frequency of the MBMS service.
19. The method claim 18 , wherein the use of the frequency layer convergence scheme is interrupted according to the message that initiates the reconfiguration procedure.