RRC group reject method and apparatus for mobile communications
A method and apparatus for transmitting a single RRC group reject message to reject the RRC connection requests of a plurality of terminals, thus minimizing the waste of radio resources and providing a quick response to those terminals that transmitted a request. A list containing initial UE identities of those terminals to be rejected, and a rejection cause indicating the reason for rejection are included in the single RRC group reject message. Preferably, the list should be generated within a certain time limit to prevent some terminals from re-transmitting their RRC connection requests.
1. A method of communicating with a network in a wireless communication system, the method comprising:
transmitting a connection request message to the network;
receiving, from the network, a group reject message in response to the transmitted connection request message, the group reject message including a terminal identity list with a plurality of terminal identifiers; and
checking whether any of the plurality of terminal identifiers of the terminal identity list matches an internal terminal identifier,
wherein the connection request message is a Radio Resource Control (RRC) connection request message,
wherein the group reject message is an RRC group reject message that further includes an RRC connection reject cause,
wherein the RRC connection reject cause is the same for all terminals corresponding to the terminal identifiers of the terminal identity list in the group reject message, and
wherein the group reject message is transmitted within a predetermined period of time after transmitting the connection request message.
2. The method of claim 1 further comprising terminating the transmission of the connection request message to the network and entering into an idle state if any of the plurality of terminal identifiers of the terminal identity list matches the internal terminal identifier.
3. The method of claim 1 further comprising waiting for one of a connection setup message and another group reject message from the network if any of the plurality of terminal identifiers of the terminal identity list does not match the internal terminal identifier.
4. The method of claim 1 , wherein the connection request message is transmitted to the network for initiating a network connection process associated with a user service.
5. The method of claim 4 , wherein the user service includes a MBMS service.
6. The method of claim 1 , wherein the plurality of terminal identifiers identify terminals for which a connection request is rejected by the network.
7. A method of communicating with a plurality of terminals in a wireless communication system, the method comprising:
receiving one or more connection request messages from the plurality of terminals; and
transmitting a group reject message to the plurality of terminals in response to the received one or more connection request messages, the group reject message including a terminal identity list with a plurality of terminal identifiers,
wherein the one or more connection request messages are Radio Resource Control (RRC) connection request messages,
wherein the group reject message is an RRC group reject message that further includes an RRC connection reject cause,
wherein the RRC connection reject cause is the same for all terminals corresponding to the terminal identifiers of the terminal identity list in the group reject message, and
wherein the group reject message is transmitted within a predetermined period of time after receiving the one or more connection request messages.
8. The method of claim 7 , further comprising:
determining which of the one or more received connection requests are granted and which of the one or more received connection requests are rejected.
9. The method of claim 8 , wherein the plurality of terminal identifiers of the terminal identity list indicate a corresponding terminal whose connection request is rejected.
10. The method of claim 8 , wherein the determination of which of the one or more received connection requests are granted and which of the one or more received connection requests are rejected is in accordance with at least one of available radio resources and a priority of each terminal.
11. The method of claim 7 , wherein the one or more connection request messages are for initiating a network connection process associated with a user service.
12. The method of claim 11 , wherein the user service includes a point to multipoint service.
13. The method of claim 7 , wherein the plurality of terminal identifiers identify terminals for which a connection request is rejected by the network.