Access barring for radio access network slicing
A user equipment (UE) may be barred from accessing one or more network slices. The UE collects information to perform an access barring procedure corresponding to a cell of a network, performs an accessing barring procedure using the information, performs a random access channel (RACH) procedure with the cell and establishes a radio resource control (RRC) connection with the cell.
1 . A method, performed by a user equipment (UE), the method comprising:
collecting information to perform an access barring procedure corresponding to a cell of a network, wherein the information includes a physical random access channel (PRACH) resource set specific to a radio access network (RAN) slice;
performing an accessing barring procedure using the information;
performing a random access channel (RACH) procedure with the cell using the PRACH resource set, wherein the RACH procedure includes receiving a backoff indication (BI) scaling factor specific to the PRACH resource set; and
establishing a radio resource control (RRC) connection with the cell.
2 . The method of claim 1 , wherein the information further includes one of i) an access category number associated with the UE and a network slice and ii) an access identity associated with the UE and the network slice.
3 . The method of claim 1 , wherein the information further includes an indication of network slice selection assistance information (NSSAI), the NSSAI associated with unified access control (UAC) barring information broadcast by the cell.
4 . The method of claim 1 , wherein performing the access barring procedure includes determining whether the UE and the cell are associated with a same access category number, the access category number corresponding to a network slice.
5 . The method of claim 1 , wherein performing the access barring procedure includes determining whether the UE and the cell are associated with a same access identity number, the access identity number corresponding to a network slice.
6 . The method of claim 1 , wherein performing the RACH procedure includes transmitting on a physical random access channel (PRACH) resource set specific to the RAN slice.
7 . The method of claim 1 , wherein performing the RACH procedure includes receiving RACH configuration related parameters configured for the RAN slice.
8 . The method of claim 1 , further comprising:
receiving a radio resource control (RRC) message that includes an indication of a wait timer parameter, the wait timer configured based on a radio access network (RAN) slicing ID.
9 . The method of claim 8 , further comprising:
receiving a radio resource control (RRC) message that includes an indication of a wait timer parameter, the wait timer configured based on a common value and a slice specific factor.
10 . The method of claim 1 , further comprising:
receiving a timer parameter associated with i) a radio access network (RAN) slice and ii) a radio resource control (RRC) idle state or RRC inactive state.
11 . A user equipment (UE), comprising:
a transceiver configured to communicate with a network; and
a processor configured to perform operations comprising:
collecting information to perform an access barring procedure corresponding to a cell of a network, wherein the information includes a physical random access channel (PRACH) resource set specific to a radio access network (RAN) slice;
performing an accessing barring check procedure using the information;
performing a random access channel (RACH) procedure with the cell using the PRACH resource set, wherein the RACH procedure includes receiving a backoff indication (BI) scaling factor specific to the PRACH resource set; and
establishing a radio resource control (RRC) connection with the cell.
12 . The UE of claim 11 , wherein the information further includes one of i) an access category number associated with the UE and a network slice and ii) an access identity associated with the UE and a network slice.
13 . The UE of claim 11 , wherein the information further includes an indication of network slice selection assistance information (NSSAI), the NSSAI associated with unified access control (UAC) barring information broadcast by the cell.
14 . The UE of claim 11 , wherein performing the RACH procedure includes transmitting on a physical random access channel (PRACH) resource set specific to the RAN slice.
15 . A baseband processor configured to perform operations, comprising:
collecting information to perform an access barring procedure corresponding to a cell of a network, wherein the information includes a physical random access channel (PRACH) resource set specific to a radio access network (RAN) slice;
performing an accessing barring check procedure using the information;
performing a random access channel (RACH) procedure with the cell using the resource set, wherein the RACH procedure includes receiving a backoff indication (BI) scaling factor specific to the PRACH resource set; and
establishing a radio resource control (RRC) connection with the cell.
16 . The baseband processor of claim 15 , wherein the information further includes one of i) an access category number associated with a user equipment (UE) and a network slice and ii) an access identity associated with the UE and a network slice.
17 . The baseband processor of claim 15 , wherein the information further includes an indication of network slice selection assistance information (NSSAI), the NSSAI associated with unified access control (UAC) barring information broadcast by the cell.
18 . The baseband processor of claim 15 , wherein performing the RACH procedure includes transmitting a physical random access channel (PRACH) preamble sequence specific to the RAN slice.