MULTIPLE ACCESS (MA) SIGNATURE TRANSMISSIONS
Multiple Access (MA) signature (MAS) features may be provided, for example, MAS pool definition and/or configuration may be provided. MAS indicator transmission may be provided. For example, independent indication through demodulation reference signal (DMRS) transmission and/or scheduling request (SR)-based transmission may be provided. Reliable MA detection may be provided. For example, multiple zone transmission and/or diversity may be provided. Non-orthogonal multiple-access (NOMA) transmission without MAS indication may be provided. Physical uplink control channel (PUCCFI)-based NOMA indication may be provided. NOMA layer indicator (NLI) based NOMA indication may be provided.
1 . A wireless transmit/receive unit (WTRU) comprising:
a memory; and
a processor configured to:
receive a set of resources associated with accessing a network, wherein the set of resources comprises a first set of time-frequency resources and a second set of time-frequency resources;
determine parameters associated with a transmission, wherein the parameters comprise a signal to noise ratio (SNR) and at least one of a reliability or a latency;
determine a set of time-frequency resources associated with the transmission based on the determined parameters, wherein the determined set of time-frequency resources comprises the first set of time-frequency resources or the second set of time-frequency resources;
receive a multiple access signature (MAS) set;
determine a MAS from the received MAS set based on the determined set of time-frequency resources; and
perform the transmission in the determined set of time-frequency resources using the determined MAS.
2 . (canceled)
3 . The WTRU of claim 1 , wherein the first set of time-frequency resources is associated with a high level reliability for the transmission and the second set of time-frequency resources is associated with a low level reliability for the transmission.
4 . The WTRU of claim 1 , wherein the processor is further configured to:
determine a number of layers associated with the transmission; and
perform the transmission in the set of time-frequency resources using the determined number of layers associated with the transmission.
5 . The WTRU of claim 1 , wherein being configured to determine the MAS comprises being configured to determine the MAS based on the set of time-frequency resources using one or more of traffic types, identifications, indicated beams, RRC connection information, configuration information, and measurements.
6 . The WTRU of claim 1 , wherein the processor is further configured to:
receive an indication from the network;
adjust the set of time-frequency resources and the MAS associated with the transmission based on the received indication from the network; and
perform a retransmission in the adjusted set of time-frequency resources using the adjusted MAS.
7 . The WTRU of claim 6 , wherein being configured to adjust the MAS comprises being configured to adjust one or more of a set of sequence indices, lengths, seeds, and cyclic phase shifts associated with the MAS.
8 . A method comprising:
receiving a set of resources associated with accessing a network, wherein the set of resources comprises a first set of time-frequency resources and a second set of time-frequency resources;
determining parameters associated with a transmission, wherein the parameters comprise a signal to noise ratio (SNR) and at least one of a reliability or a latency;
determining a set of time-frequency resources associated with the transmission based on the determined parameters, wherein the determined set of time-frequency resources comprises the first set of time-frequency resources or the second set of time-frequency resources;
receiving a multiple access signature (MAS) set;
determining a MAS from the received MAS set based on the determined set of time-frequency resources; and
sending the transmission in the determined set of time-frequency resources using the determined MAS.
9 . (canceled)
10 . The method of claim 8 , wherein the first set of time-frequency resources is associated with a high level reliability for the transmission and the second set of time-frequency resources is associated with a low level reliability for the transmission.
11 . The method of claim 8 , wherein the method further comprises:
determining a number of layers associated with the transmission; and
performing the transmission in the determined set of time-frequency resources using the determined number of layers associated with the transmission.
12 . The method of claim 8 , wherein determining the MAS based on the set of time-frequency resources comprises determining the MAS based on the set of time-frequency resources using one or more of traffic types, identifications, indicated beams, RRC connection information, configuration information, and measurements.
13 . The method of claim 8 , wherein the method further comprises:
receiving an indication from the network;
adjusting the set of time-frequency resources and the MAS associated with the NOMA transmission based on the received indication from the network; and
performing a retransmission in the adjusted set of time-frequency resources using the adjusted MAS.
14 . The method of claim 13 , wherein adjusting the MAS comprises adjusting one or more of a set of sequence indices, lengths, seeds, and cyclic phase shifts associated with the MAS.
15 . The WTRU of claim 1 , wherein the set of resources associated with accessing the network comprises non-orthogonal resources.
16 . The method of claim 8 , wherein the set of resources associated with accessing the network comprises non-orthogonal resources.