Mobile telecommunications system method, user equipment and base station for transmitting on demand system information

1. Circuitry for a user equipment, the user equipment for a mobile telecommunications system, the circuitry comprising:

communication circuitry for transmitting and receiving signals; and

control circuitry configured with the communication circuitry to:

transmit a system information request to the mobile telecommunications system while the user equipment is in an idle state and without performing a physical random access channel (PRACH) procedure; and

receive a handover command from the mobile telecommunications system, the handover command including the requested system information, wherein

in a case that the system information request is received by the mobile telecommunications system on a pre-allocated resource simultaneously as a second system information request is received by the mobile telecommunications system, the mobile telecommunications system broadcasts non-essential system information,

wherein the system information is requested within a radio resource establishment procedure in a radio resource control connection request message.

2. The circuitry of claim 1 , wherein the system information request includes at least one of: indication that system information is requested, indication of system information blocks, service related information, and location related information.

3. The circuitry of claim 1 , wherein the system information request includes identification information for identifying the user equipment.

4. The circuitry of claim 1 , wherein transmission of the system information request is repeated in a case that, after a predetermined period, no acknowledgment is received.

5. The circuitry of claim 1 , wherein requesting system information is performed upon detection of at least one of: new service request, mobility, and new physical layer change.

6. The circuitry of claim 1 , wherein the system information request is transmitted within a radio resource control signaling.

7. The circuitry of claim 1 , wherein the system information request is transmitted within a scheduling request.

8. Circuitry for a base station, the base station for a mobile telecommunications system, the circuitry comprising:

communication circuitry for transmitting and receiving signals; and

control circuitry configured with the communication circuitry to:

receive a system information request from a user equipment, the system information request based on a radio resource control connection state of the user equipment and being transmitted by the user equipment while in an idle state and without performing a physical random access channel (PRACH) procedure;

determine whether the radio resource control connection state of the user equipment is the idle state based on the system information request; and

transmit a handover command to the user equipment based on the system information request, the handover command including the requested system information, wherein

in a case that the system information request is received simultaneously as a second system information request is received, the circuitry is further configured to broadcast non- essential system information, and

the system information is requested within a radio resource establishment procedure in a radio resource control connection request message.

9. The circuitry according to claim 8 , wherein the determined radio resource control connection state is a connected state.

10. The circuitry according to claim 8 , wherein the requested system information is included in a handover command.

11. The circuitry of claim 8 , wherein the system information request includes at least one of: indication that system information is requested, indication of system information blocks, service related information, and location related information.

12. The circuitry of claim 8 , wherein the system information request includes identification information for identifying the user equipment.

13. The circuitry of claim 8 , wherein the system information request is retransmitted in a case that, after a predetermined period, no acknowledgment is received.

14. A mobile telecommunications system method for transmitting on demand system information to a user equipment, the mobile telecommunications system method comprising:

requesting system information, by the user equipment transmitting a system information request while in an idle state and without performing a physical random access channel (PRACH) procedure;

transmitting a handover command, to the user equipment, based on the system information request, the handover command including the requested system information; and

broadcasting non-essential system information in a case that the system information request is received simultaneously as a second system information request is received,

wherein the system information is requested by the user equipment within a radio resource establishment procedure in a radio resource control connection request message.