METHOD FOR INITIAL ACCESS USING SIGNATURES
A method for use in a wireless transmit/receive unit (WTRU) for initial access using a system signature or signature sequence is described herein. The WTRU may receive a system signature from at least one transmission-reception points (TRP) of a plurality of TRPs. The system signature may be associated with a numerology, a network slice, a discontinuous transmission (DTX) state, a control channel characteristic, and/or a network service. The WTRU may then determine with use of a stored access table a resource selection, an initial access method of a plurality of initial access methods, a network slice, a network service, or a group of the at least one TRP. The WTRU may then receive at least one random access response (RAR) message from the at least one TRP. The WTRU may then associate with the at least on TRP based on the received at least one RAR message.
1 . A method performed by a wireless transmit/receive unit (WTRU), the method comprising:
receiving, by the WTRU from one or more transmission-reception points (TRPs) of a plurality of TRPs, a signature sequence, wherein the signature sequence is related to a numerology of a network;
determining, by the WTRU with use of an access table, resource selection and an initial access from a plurality of access procedures that are based on the numerology, or a group of the one or more TRPs; and
receiving, by the WTRU, one or more random access response (RAR) messages from one TRP in the group of the one or more TRPs.
2 . The method of claim 1 further comprising transmitting, in a control message, an indication of a selected RAR from the one or more RAR messages.
3 . The method of claim 1 , wherein the access table is acquired on a condition that the WTRU triggered an acquisition of the access table.
4 . (canceled)
5 . The method of claim 1 , wherein the signature sequence is associated with a network slice.
6 . The method of claim 1 , wherein the signature sequence is associated with a discontinuous transmission (DTX) state.
7 .- 9 . (canceled)
10 . The method of claim 1 , further comprising:
transmitting a preamble using the received signature sequence.
11 . The method of claim 1 , further comprising:
associating with the one TRP in the group of the one or more TRPs based on the received one or more RAR messages.
12 . (canceled)
13 . A wireless transmit/receive unit (WTRU) configured comprising:
a receiver configured to receive, from one or more transmission-reception points (TRPs) of a plurality of TRPs, a signature sequence, wherein the signature sequence is related to a numerology of a network;
a processor configured to determine, with use of an access table, resource selection and an initial access from a plurality of access procedures that are based on the numerology or a group of the one or more TRPs; and
the receiver further configured to receive one or more random access response (RAR) messages from one TRP in the group of the one or more TRPs.
14 . The WTRU of claim 13 further comprising transmitting, in a control message, an indication of a selected RAR from the one or more RAR messages.
15 . WTRU of claim 13 , wherein the access table is acquired on a condition that the WTRU triggered an acquisition of the access table.
16 . (canceled)
17 . The WTRU of claim 13 , wherein the signature sequence is associated with a network slice.
18 . The WTRU of claim 13 , wherein the signature sequence is associated with a discontinuous transmission (DTX) state.
19 .- 21 . (canceled)
22 . The WTRU of claim 13 , further comprising:
a transmitter configured to transmit a preamble using the received signature sequence.
23 . The WTRU of claim 13 , further comprising:
the processor configured to associate the WTRU with the one TRP in the group of the one or more TRPs based on the received one or more RAR messages.
24 . (canceled)