Methods, devices and systems for grant-less uplink multiple access
A wireless transmit/receive unit (WTRU) may receive configuration information indicating a set of physical channel frequency resources. The WTRU may receive downlink control information (DCI), and the DCI may include an indication of an allocation of at least a subset of the set of physical channel frequency resources. Further, the WTRU may determine a time period and one or more physical channel frequency resources from the subset of the set of physical channel frequency resources. The WTRU may transmit control information in a physical shared channel transmission using the determined one or more physical shared channel frequency resources during the determined time period. Also, the control information may include a WTRU-identifier (ID) associated with the WTRU. In an example, the control information may include a new data indicator (NDI) or a retransmission of previously transmitted control information. In a further example, the physical shared channel transmission may further include data.
1. A method for use in a wireless transmit/receive unit (WTRU) for multiple access wireless communications, the method comprising:
receiving configuration information indicating a set of physical channel frequency resources;
receiving downlink control information (DCI), wherein the DCI includes an indication of an allocation of at least a subset of the set of physical channel frequency resources;
determining a time period and one or more physical shared channel frequency resources, wherein the one or more physical shared channel frequency resources are determined from the subset of the set of physical channel frequency resources; and
transmitting control information in a physical shared channel transmission using the determined one or more physical shared channel frequency resources during the determined time period, wherein the control information includes a WTRU-identifier (ID) associated with the WTRU.
2. The method of claim 1 , wherein the control information transmitted in the physical shared channel transmission includes a new data indicator (NDI).
3. The method of claim 1 , wherein the physical shared channel transmission further includes data.
4. The method of claim 3 , wherein the data transmitted in the physical shared channel transmission includes a retransmission of previously transmitted data.
5. The method of claim 1 , wherein the control information transmitted in the physical shared channel transmission includes a retransmission of previously transmitted control information.
6. The method of claim 1 , wherein the WTRU is a source WTRU.
7. The method of claim 1 , wherein the DCI includes feedback information.
8. A wireless transmit/receive unit (WTRU) for multiple access wireless communications, the WTRU comprising:
a transceiver; and
the transceiver operatively coupled to a processor; wherein:
the transceiver is configured to receive configuration information indicating a set of physical channel frequency resources;
the transceiver is configured to receive a downlink control information (DCI), wherein the DCI includes an indication of an allocation of at least a subset of the set of physical channel frequency resources;
the processor is configured to determine a time period and one or more physical shared channel frequency resources, wherein the one or more physical shared channel frequency resources are determined from the subset of the set of physical channel frequency resources; and
the transceiver and the processor are configured to transmit control information in a physical shared channel transmission using the determined one or more physical shared channel frequency resources during the determined time period, wherein the control information includes a WTRU-identifier (ID) associated with the WTRU.
9. The WTRU of claim 8 , wherein the control information transmitted in the physical shared channel transmission includes a new data indicator (NDI).
10. The WTRU of claim 8 , wherein the physical shared channel transmission further includes data.
11. The WTRU of claim 10 , wherein the data transmitted in the physical shared channel transmission includes a retransmission of previously transmitted data.
12. The WTRU of claim 8 , wherein the control information transmitted in the physical shared channel transmission includes a retransmission of previously transmitted control information.
13. The WTRU of claim 8 , wherein the WTRU is a source WTRU.
14. The WTRU of claim 8 , wherein the DCI includes feedback information.
15. A first wireless transmit/receive unit (WTRU) for multiple access wireless communications, the WTRU comprising:
a transceiver; and
the transceiver operatively coupled to a processor; wherein:
the transceiver is configured to receive control information in a physical shared channel transmission using one or more physical shared channel frequency resources, in a subset of a set of physical channel frequency resources, during a time period, wherein the control information includes a WTRU-identifier (ID) associated with a second WTRU; and
the transceiver and the processor are configured to transmit data based on the control information received in the physical shared channel transmission.
16. The first WTRU of claim 15 , wherein the control information received in the physical shared channel transmission includes a new data indicator (NDI).
17. The first WTRU of claim 15 , wherein the physical shared channel transmission further includes a retransmission of previously transmitted data.
18. The first WTRU of claim 15 , wherein the control information received in the physical shared channel transmission includes a retransmission of previously transmitted control information.
19. The first WTRU of claim 15 , wherein the first WTRU is a destination WTRU.
20. The first WTRU of claim 15 , wherein the second WTRU is a source WTRU.