Slice-Based Random Access Information
A base station distributed unit (BS-DU) receives, from a wireless device, a random access (RA) preamble based on an RA configuration associated with at least one network slice. The BS-DU sends, to a base station central unit (BS-CU), a radio resource control (RRC) request message for an RRC connection or an area update procedure of the wireless device and an indication of the at least one network slice.
1 . A base station distribution unit comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station distribution unit (BS-DU) to:
receive, from a wireless device, a random access (RA) preamble based on an RA configuration associated with at least one network slice; and
send, to a base station central unit (BS-CU), a first message comprising:
a radio resource control (RRC) request message; and
an indication of the at least one network slice.
2 . The base station distribution unit of claim 1 , wherein the indication of the at least one network slice comprises at least one of:
a field, parameter; or
an information element (IE).
3 . The base station distribution unit of claim 1 , wherein the instructions further cause the BS-DU to receive, from the wireless device, the RRC request message for an RRC connection or an area update procedure of the wireless device.
4 . The base station distribution unit of claim 1 , wherein the instructions further cause the BS-DU to receive, from the BS-CU, a second message comprising configuration parameters of one or more radio bearers associated with the at least one network slice.
5 . The base station distribution unit of claim 4 , wherein the instructions further cause the BS-DU to receive, from the BS-CU, for the wireless device, an RRC message comprising the configuration parameters of the one or more radio bearers.
6 . The base station distribution unit of claim 5 , wherein the instructions further cause the BS-DU to transmit, to the wireless device, the RRC message received from the BS-CU.
7 . The base station distribution unit of claim 1 , wherein the instructions further cause the BS-DU to determine the at least one network slice based on at least one of:
the RA preamble received from the wireless device being associated with the at least one network slice;
the RA configuration associated with the receiving of the RA preamble being associated with the at least one network slice; or
a resource associated with receiving of the RRC request message from the wireless device being associated with the at least one network slice.
8 . A base station central unit comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station central unit (BS-CU) to:
receive from a base station distributed unit (BS-DU):
a radio resource control (RRC) request message; and
an indication of at least one network slice.
9 . The base station central unit of claim 8 , wherein the indication of the at least one network slice comprises at least one of:
a field, parameter; or
an information element (IE).
10 . The base station central unit of claim 8 , wherein the RRC request message is for an RRC connection or an area update procedure of a wireless device.
11 . The base station central unit of claim 8 , wherein the instructions further cause the BS-CU to transmit, to the BS-CU, a second message comprising configuration parameters of one or more radio bearers associated with the at least one network slice.
12 . The base station central unit of claim 11 , wherein the instructions further cause the BS-CU to transmit, for a wireless device, an RRC message comprising the configuration parameters of the one or more radio bearers, and wherein the RRC message is at least one of:
for the wireless device;
an RRC setup message;
an RRC resume message; or
an RRC reestablishment message.
13 . The base station central unit of claim 12 , wherein the instructions further cause the BS-CU to determine to configure the one or more radio bearers associated with the at least one network slice for the wireless device.
14 . The base station central unit of claim 13 , wherein the determining to configure the one or more radio bearers is based on the indication of the at least one network slice.
15 . A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a base station distribution unit (BS-DU), cause the BS-DU to:
receive, from a wireless device, a random access (RA) preamble based on an RA configuration associated with at least one network slice; and
send, to a base station central unit (BS-CU), a first message comprising:
a radio resource control (RRC) request message; and
an indication of the at least one network slice.
16 . The non-transitory computer-readable medium of claim 15 , wherein the indication of the at least one network slice comprises at least one of:
a field, parameter; or
an information element (IE).
17 . The non-transitory computer-readable medium of claim 15 , wherein the instructions further cause the BS-DU to receive, from the wireless device, the RRC request message for an RRC connection or an area update procedure of the wireless device.
18 . The non-transitory computer-readable medium of claim 15 , wherein the instructions further cause the BS-DU to receive, from the BS-CU, at least one of:
a second message comprising configuration parameters of one or more radio bearers associated with the at least one network slice; or
an RRC message comprising the configuration parameters of the one or more radio bearers.
19 . The non-transitory computer-readable medium of claim 18 , wherein the instructions further cause the BS-DU to transmit, to the wireless device, the RRC message received from the BS-CU.
20 . The non-transitory computer-readable medium of claim 15 , wherein the instructions further cause the BS-DU to determine the at least one network slice based on at least one of:
the RA preamble received from the wireless device being associated with the at least one network slice;
the RA configuration associated with the receiving of the RA preamble being associated with the at least one network slice; or
a resource associated with receiving of the RRC request message from the wireless device being associated with the at least one network slice.