Base stations and user equipments configured to handle on-demand system information in 5G NR
The present disclosure provides a user equipment for a mobile telecommunications system, which includes circuitry configured to communicate with a new radio base station. The circuitry is further configured to transmit an on-demand system information request to the new radio base station, wherein the on-demand system information request is transmitted based on a backup resource.
1. A user equipment for a mobile telecommunications system comprising circuitry configured to communicate with a new radio base station, wherein the circuitry is further configured to:
transmit an on-demand system information request to the new radio base station, wherein the on-demand system information request is transmitted on a resource, wherein
the resource includes a random access preamble.
2. The user equipment of claim 1 , wherein
the on-demand system information request is transmitted in a Msg1 message.
3. The user equipment of claim 1 , wherein
the resource includes a random access time resource.
4. The user equipment of claim 3 , wherein
the resource is reserved.
5. The user equipment of claim 4 , wherein
the resource is indicated in an essential system information transmission.
6. The user equipment of claim 1 , wherein
the on-demand system information request is transmitted over the resource, when it is detected that a number of transmissions exceeds a predefined threshold.
7. The user equipment of claim 1 , wherein
the circuitry is further configured to transmit the on-demand system information request based on an indicator received.
8. The user equipment of claim 1 , wherein
the resource is only activated for predefined system information blocks.
9. A new radio base station for a mobile telecommunications system comprising circuitry configured to communicate with at least one user equipment and to establish a new radio cell, wherein the circuitry is further configured to:
transmit on-demand system information to the at least one user equipment in response to receiving an on-demand system information request from the at least one user equipment on a resource, wherein
the resource includes a random access preamble.
10. The new radio base station of claim 9 , wherein
the on-demand system information request is transmitted in a Msg1 message.
11. The new radio base station of claim 10 , wherein
the resource includes a random access time resource.
12. The new radio base station of claim 11 , wherein
the circuitry is further configured to reserve the resource in advance.
13. The new radio base station of claim 12 , wherein
the circuitry is further configured to transmit an indication of the resource in an essential system information.
14. The new radio base station of claim 13 , wherein
the circuitry is further configured to detect a collision and to transmit the indication in response to detection of the collision.
15. The new radio base station of claim 14 , wherein
the collision is detected based on a decoding error for received signals on a reserved resource.
16. The new radio base station of claim 15 , wherein
the reserved resource is at least one of the resource and a pre-reserved resource.
17. The new radio base station of claim 9 , wherein
the resource is only activated for predefined system information blocks.