System information provisioning and light weight connection signaling
System information can include a basic set of system information and additional system information. A UE can receive the basic set of system information and then later request or receive the additional system information. Messages can use tags which can be used to look up locally stored system information. If a tag does not correspond to any locally stored system information, the system information and an associated tag can then be requested. Messages can be indicative of a cluster identity associated with cells. When the UE goes into a new cell, the cluster identity can be checked to see if system information from a prior call can be reused.
1. An apparatus comprising a processor, a memory, and communication circuitry, the apparatus being connected to a network via its communication circuitry, the apparatus further comprising computer-executable instructions stored in the memory of the apparatus which, when executed by the processor of the apparatus, cause the apparatus to perform operations comprising:
upon entering a cell of the network, receiving a first set of system information broadcast periodically within the cell, the first set of system information comprising information for initial access to the network, information concerning availability of at least one other set of system information, and information concerning how to request the at least one other set of system information;
storing the received first set of system information in the memory;
determining, based on the information concerning availability of the at least one other set of system information in the stored first set of system information, to acquire the at least one other set of system information;
sending, to the cell, based on the stored information concerning availability of the at least one other set of system information and the information concerning how to request the at least one other set of system information, a message requesting the at least one other set of system information, wherein the message contains a list of the at least one other set of system information requested by the apparatus; and
receiving, from the cell, the at least one other set of system information.
2. The apparatus of claim 1 , wherein the first set of system information is received on a broadcast channel of the cell.
3. The apparatus of claim 1 , wherein the apparatus comprises user equipment.
4. The apparatus of claim 1 , wherein the message requesting the at least one other set of system information is sent using a physical channel resource reserved by the cell.
5. The apparatus of claim 4 , wherein the reserved physical channel resource comprises one of a physical random access channel resource, a physical uplink shared channel resource, or a physical uplink control channel resource.
6. The apparatus of claim 4 , wherein the reserved physical channel resource is associated with one of a plurality of different network use cases.
7. The apparatus of claim 1 , wherein the apparatus uses at least some of the first set and the at least one other set of system information in another cell.
8. The apparatus of claim 1 , wherein the first set of system information comprises information to support cell selection by the apparatus.
9. The apparatus of claim 1 , wherein the at least one other set of system information is received from the cell via one of a broadcast or dedicated signaling.
10. The apparatus of claim 1 , wherein the apparatus receives the at least one other set of system information in a state of RRC_IDLE or RRC_INACTIVE.
11. The apparatus of claim 1 , wherein the information concerning availability of the at least one other set of system information indicates that at least a second other set of system information is available from the cell, and wherein the instructions further cause the apparatus to receive the at least second other set of system information from the cell.
12. A method, comprising:
upon entering a cell of a network, receiving a first set of system information broadcast periodically within the cell, the first set of system information comprising information for initial access to the network, information concerning availability of at least one other set of system information, and information concerning how to request the at least one other set of system information;
storing the received first set of system information in a memory;
determining, based on the information concerning availability of the at least one other set of system information in the stored first set of system information, to acquire the at least one other set of system information;
sending, to the cell, based on the stored information concerning availability of the at least one other set of system information and the information concerning how to request the at least one other set of system information, a message requesting the at least one other set of system information, wherein the message contains a list of the at least one other set of system information requested by the apparatus; and
receiving, from the cell, the at least one other set of system information.
13. The method of claim 12 , wherein the first set of system information is received on a broadcast channel of the cell.
14. The method of claim 12 , wherein receiving the at least one other set of system information comprises receiving the at least one other set of system information from the cell via one of a broadcast or dedicated.
15. The method of claim 12 , wherein sending a message requesting the at least one other set of system information comprises sending a message containing a list of other sets of system information available from the cell.
16. The method of claim 12 , wherein the message requesting the at least one other set of system information is sent using a physical channel resource reserved by the cell.
17. The method of claim 16 , wherein the reserved physical channel resource comprises one of a physical random access channel resource, a physical uplink shared channel resource, or a physical uplink control channel resource.
18. The method of claim 16 , wherein the reserved channel resource is associated with one of a plurality of different network use cases.
19. An apparatus comprising a processor, a memory, and communication circuitry, the apparatus being connected to a network via its communication circuitry, the apparatus further comprising computer-executable instructions stored in the memory of the apparatus which, when executed by the processor of the apparatus, cause the apparatus to perform operations comprising:
transmitting, to a user equipment within a cell of the network upon the user equipment entering the cell, a first set of system information, the first set of system information comprising information for initial access to the network, information concerning availability of at least one other set of system information, and information concerning how to request the at least one other set of system information, wherein the first set of system information is broadcast within the cell periodically,
wherein the user equipment is configured to determine, based on the information concerning availability of the at least one other set of system information, to acquire the at least one other set of system information;
receiving, from the user equipment, based on the stored information concerning availability of the at least one other set of system information and the information concerning how to request the at least one other set of system information, a message requesting the at least one other set of system information, wherein the message contains a list of the at least one other set of system information requested by the apparatus; and
transmitting, to the user equipment, the requested at least one other set of system information.
20. The apparatus of claim 19 , wherein transmitting the first set of system information comprises transmitting the first set of system information on a broadcast channel of the cell.
21. The apparatus of claim 19 , wherein the message requesting the at least one other set of system information is received using a physical channel resource reserved by the cell.
22. The apparatus of claim 21 , wherein the reserved physical channel resource comprises one of a physical random access channel resource, a physical uplink shared channel resource, or a physical uplink control channel resource.
23. The apparatus of claim 21 , wherein the reserved physical channel resource is associated with one of a plurality of different network use cases.
24. The apparatus of claim 19 , wherein the first set of system information comprises information to support cell selection by the user equipment.
25. The apparatus of claim 19 , wherein transmitting the first set of system information comprises broadcasting the first set of system information periodically.
26. The apparatus of claim 19 , wherein transmitting the requested at least one other set of system information comprises transmitting the requested at least one other set of system information via broadcast or dedicated signaling.