Apparatus and method for handling a connection reject message
View Patent ↗There is provided a method, in a wireless communications device, the method comprising: receiving from a first RAT a reject message, the reject message indicating a period of time; camping on a cell of a second RAT; disallowing camping on a cell of the first RAT unless at least one of the following criteria are met: the period of time has elapsed; and the wireless communications device receives a further message indicating that the first RAT has confirmed it will accept a connection from the wireless communications device.
1. A method, in a wireless communications device, the method comprising:
receiving from a first radio access technology (RAT) a reject message, the reject message indicating a period of time;
camping on a cell of a second RAT;
disallowing camping on a cell of the first RAT until the period of time has elapsed, and in response to the period of time elapsing: allowing camping on the cell of the first RAT;
unless in the period of time the wireless communications device receives a further message indicating that the first RAT has confirmed it will accept a connection from the wireless communication device, when in response to receipt of the message: allowing camping on the cell of the first RAT;
wherein the method further comprising determining whether the further message is valid; and
wherein the reject message includes a pointer to the value of the period of time, the value of the period of time previously stored in the wireless communications device.
2. The method of claim 1 , wherein disallowing camping on a cell of the first RAT comprises:
rejecting a cell change order to the first RAT;
disallowing rove-out to first RAT; and
disabling cell-reselection to the first RAT.
3. The method of claim 1 , wherein the further message is at least one of:
a handover complete message; and
a handover request message.
4. The method of claim 1 , wherein the period of time indicated by the reject message is a period of time during which the wireless communications device should wait before attempting to connect to the first RAT.
5. The method of claim 1 , wherein the reject message includes the value of the period of time.
6. The method of claim 1 , wherein the first RAT is Universal Mobile Telecommunications System (UMTS) and the reject message is an RRC Connection Reject Message.
7. The method of claim 1 , wherein the second RAT is one of a Global System for Mobile Communications (GSM) network and a Generic Access Network (GAN).
8. The method of claim 1 , wherein the reject message indicates the second RAT.
9. A wireless communications device comprising:
a transceiver for transmitting and receiving radio signals;
a processor; and
a memory having stored therein: one or more routines executable by the processor, the one or more routines being adapted to:
receive from a first RAT a reject message, the reject message indicating a period of time;
camp on a cell of a second RAT;
disallow camping on a cell of the first RAT until the period of time has elapsed, and in response to the period of time elapsing: allow camping on the cell of the first RAT;
unless in the period of time the wireless communications device receives a further message indicating that the first RAT has confirmed it will accept a connection from the wireless communication device, when in response to receipt of the further message: allow camping on the cell of the first RAT;
determine whether the further message is valid; and
wherein the reject message includes a pointer to the value of the period of time, the value of the period of time previously stored in the wireless communications device.
10. The wireless communications device of claim 9 , wherein disallowing camping on a cell of the first RAT comprises:
rejecting a cell change order to the first RAT;
disallowing rove-out to first RAT; and
disabling cell-reselection to the first RAT.
11. The wireless communications device of claim 9 , wherein the further message is at least one of:
a handover complete message; and
a handover request message.
12. The wireless communications device of claim 9 , wherein the period of time indicated by the reject message is a period of time during which the wireless communications device should wait before attempting to connect to the first RAT.
13. The wireless communications device of claim 9 , wherein the reject message includes the value of the period of time.
14. The wireless communications device of claim 9 , wherein the first RAT is UMTS and the reject message is an Radio Resource Control (RRC) Connection Reject Message.
15. The wireless communications device of claim 9 , wherein the second RAT is one of a Global System for Mobile Communications (GSM) network and a Generic Access Network (GAN).
16. The wireless communications device of claim 9 , wherein the reject message indicates the second RAT.
17. A non-transitory computer-readable storage medium having computer-executable instructions encoded thereon, the computer-executable instructions adapted to cause a wireless communications device to:
receive from a first RAT a reject message, a reject message indicating a period of time;
camp on a cell of a second RAT;
disallow camping on a cell of the first RAT until the period of time has elapsed, and in response to the period of time elapsing: allow camping on the cell of the first RAT;
unless in the period of time the wireless communications device receives a further message indicating that the first RAT has confirmed it will accept a connection from the wireless communication device, when in response to receipt of the further message: allow camping on the cell of the first RAT;
determine whether the further message is valid; and
wherein the reject message includes a pointer to the value of the period of time, the value of the period of time previously stored in the wireless communications device.