UL MIMO full TX power
A WTRU may be configured to transmit to a network (e.g., in a first indication) a full power uplink transmission capability associated with the WTRU, e.g., Cap3. The WTRU may receive (e.g., in a second indication) an indication of whether the WTRU is allowed to operate with full power transmission. The WTRU may determine (e.g., from a set of TPMIs), a subset of TPMIs based on, for example, the WTRU's full power uplink transmission capability (e.g., where the subset of TPMIs includes a first TPMI). The set of TPMIs may comprise one or more subsets of TPMIs. The WTRU may transmit (e.g., in a third indication) an indication of the determined subset of TPMIs. The WTRU may receive (e.g., in a fourth indication) an indication of the first TPMI in the subset of TPMIs. The WTRU may transmit to the network uplink data precoded with the first TPMI.
1. A wireless transmit/receive unit (WTRU) comprising:
a processor configured to:
determine, from a set of transmit precoding matrix indicators (TPMIs), a subset of TPMIs based on full power uplink transmission support associated with the WTRU, wherein the subset of TPMIs comprises a first TPMI, and wherein the first TPMI supports full power transmission;
transmit, to a network device, an indication of the determined subset of TPMIs, wherein the indication indicates that the subset of TPMIs supports full power transmission;
receive, from the network device, an indication that indicates full power configuration information, wherein the full power configuration information indicates to the WTRU to operate with full power transmission;
receive, from the network device, an indication that indicates the first TPMI; and
transmit, to the network device, uplink data precoded with a precoding matrix indicated by the first TPMI.
2. The WTRU of claim 1 , wherein the indication of the determined subset of TPMIs comprises an index that identifies the subset of TPMIs.
3. The WTRU of claim 1 , wherein the set of TPMIs comprises a plurality of subsets of TPMIs.
4. The WTRU of claim 3 , wherein each of the plurality of subsets of TPMIs is associated with a respective precoder structure.
5. The WTRU of claim 1 , wherein the processor is further configured to determine, based on the first TPMI, a precoder for precoding the uplink data.
6. The WTRU of claim 1 , wherein the processor is further configured to transmit a first indication that indicates a full power uplink transmission capability associated with the WTRU.
7. The WTRU of claim 6 , wherein the full power uplink transmission capability associated with the WTRU is WTRU capability 3.
8. A method associated with a wireless transmit/receive unit (WTRU), the method comprising:
determining, from a set of transmit precoding matrix indicators (TPMIs), a subset of TPMIs based on full power uplink transmission support associated with the WTRU, wherein the subset of TPMIs comprises a first TPMI, and wherein the first TPMI supports full power transmission;
transmitting, to a network device, an indication of the determined subset of TPMIs, wherein the indication indicates that the subset of TPMIs supports full power transmission;
receiving, from the network device, an indication that indicates full power configuration information, wherein the full power configuration information indicates to the WTRU to operate with full power transmission;
receiving, from the network device, an indication that indicates the first TPMI; and
transmitting, to the network device, uplink data precoded with a precoding matrix indicated by the first TPMI.
9. The method of claim 8 , wherein the indication of the determined subset of TPMIs comprises an index that identifies the subset of TPMIs.
10. The method of claim 8 , wherein the set of TPMIs comprises a plurality of subsets of TPMIs.
11. The method of claim 10 , wherein each of the plurality of subsets of TPMIs is associated with a respective precoder structure.
12. The method of claim 8 , further comprising determining, based on the first TPMI, a precoder for precoding the uplink data.
13. The method of claim 8 , further comprising transmitting a first indication that indicates a full power uplink transmission capability associated with the WTRU.
14. The method of claim 13 , wherein the full power uplink transmission capability associated with the WTRU is WTRU capability 3.