Cell reselection signalling method
View Patent ↗The invention relates to methods pertaining to cell reselection in a cellular telecommunication system. According to the invention, a connection setup rejection message is used to direct a mobile communication means to attempt a new connection with certain parameter values such as a certain carrier frequency. A plurality of parameter values may as well be indicated in the message, which allows the network to direct the mobile communication means to make a connection setup request to a specific cell, for example. The connection setup rejection message can be for example the CONNECTION SETUP REJECT message of the RRC protocol.
1. An apparatus, where the apparatus is configured:
to receive a connection rejection message in a mobile cellular network, the connection rejection message comprising a value of at least one parameter;
to set a reception frequency for a connection setup procedure based on the value of the at least one parameter of the connection rejection message; and
to select, for the connection setup procedure, a channel transmitting on the reception frequency based on the at least one parameter of the connection rejection message.
2. The apparatus of claim 1 , where the connection rejection message is a RRC CONNECTION REJECT message.
3. The apparatus of claim 1 , where the apparatus is configured, in response to a predetermined parameter of the connection rejection message having a predetermined value, to obtain the value of at least one parameter for the connection setup procedure from a system information message.
4. The apparatus of claim 1 , further configured to initiate the connection setup procedure.
5. The apparatus of claim 1 , further configured:
to set a specific channel scrambling code based on the value of the at least one parameter of the connection rejection message.
6. The apparatus of claim 1 , further configured:
to set a specific channel code based on the value of the at least one parameter of the connection rejection message.
7. The apparatus of claim 6 , further configured:
to set a timing value based on the value of the at least one parameter of the connection rejection message.
8. The apparatus of claim 1 , further configured:
to set a scrambling code parameter based on the value of the at least one parameter of the connection rejection message.
9. The apparatus of claim 1 , further configured:
to set a channel code parameter based on the value of the at least one parameter of the connection rejection message.
10. The apparatus of claim 1 , further configured:
to set a parameter describing a specific primary common pilot channel based on the value of the at least one parameter of the connection rejection message.
11. The apparatus of claim 1 , further configured:
to set a parameter describing a specific primary common control physical channel based on the value of the at least one parameter of the connection rejection message.
12. The apparatus of claim 1 , further configured:
to set a parameter identifying a second cellular telecommunication network based on the value of the at least one parameter of the connection rejection message.
13. The apparatus of claim 2 , further configured:
to start the connection setup procedure based at least on the value of the at least one parameter of the connection rejection message.
14. The apparatus of claim 1 , where the apparatus is embodied in a mobile terminal.
15. The apparatus of claim 1 , where the apparatus is embodied in a dual-mode terminal.
16. The apparatus of claim 1 , where the apparatus is embodied in a multimode terminal.
17. The apparatus of claim 1 , further comprising a subscriber identity module.
18. An apparatus, where the apparatus is configured:
to receive a connection rejection message in a mobile cellular network, the connection rejection message comprising a value of at least one parameter;
to set a reception frequency for a connection setup procedure based on the value of the at least one parameter of the connection rejection message;
to select a channel transmitting on the reception frequency; and
to initiate the connection setup procedure.
19. An apparatus, where the apparatus is configured:
to receive a connection rejection message in a mobile cellular network, the connection rejection message comprising a value of at least one parameter;
to set a reception frequency for a connection setup procedure based on the value of the at least one parameter of the connection rejection message;
to set a specific channel code based on the value of the at least one parameter of the connection rejection message; and
to select a channel transmitting on the reception frequency.
20. The apparatus of claim 19 , further configured:
to set a timing value based on the value of the at least one parameter of the connection rejection message.