Half duplex WTRU
A method performed by a HD-WTRU may comprise determining that an uplink SR and/or a PRACH preamble overlaps in time with one or more subframes of a scheduled downlink shared channel transmission. When the overlap occurs, the HD-WTRU may receive the downlink shared channel transmission on the one or more subframes. The HD-WTRU may process the downlink shared channel transmission, not transmit the SR and not transmit the PRACH preamble.
1. A method performed by a half duplex wireless transmit/receive unit (HD-WTRU), the method comprising:
receiving downlink control information (DCI) on a physical downlink control channel (PDCCH);
determining that an uplink scheduling request (SR) and/or a physical random access channel (PRACH) preamble would overlap in time with one or more subframes of a downlink shared channel transmission scheduled by the DCI; and
receiving the scheduled downlink shared channel transmission on the one or more subframes.
2. The method of claim 1 , further comprising:
processing the scheduled downlink shared channel transmission.
3. The method of claim 1 , further comprising:
not transmitting the SR and not transmitting the PRACH preamble while receiving the scheduled downlink shared channel transmission.
4. The method of claim 1 , wherein the HD-WTRU comprises a single oscillator.
5. The method of claim 1 , further comprising:
transmitting the SR and/or PRACH preamble after receiving the scheduled downlink shared channel transmission.
6. The method of claim 1 , wherein the HD-WTRU is a machine type communication (MTC) HD-WTRU.
7. The method of claim 1 , wherein the scheduled downlink shared channel transmission is transmitted with a cell radio network transmission identifier (C-RNTI).
8. A half duplex wireless transmit/receive unit (HD-WTRU) comprising:
a receiver configured to receive downlink control information (DCI) on a physical downlink control channel (PDCCH);
circuitry configured to determine that an uplink scheduling request (SR) and/or a physical random access channel (PRACH) preamble would overlap in time with one or more subframes of a downlink shared channel transmission scheduled by the DCI; and
the receiver configured to receive the scheduled downlink shared channel transmission on the one or more subframes.
9. The HD-WTRU of claim 8 , further comprising:
a processor configured to process the scheduled downlink shared channel transmission.
10. The HD-WTRU of claim 8 , further comprising:
a transmitter configured to not transmit the SR and not transmit the PRACH preamble while the scheduled downlink shared channel transmission is being received.
11. The HD-WTRU of claim 8 , wherein the HD-WTRU comprises a single oscillator.
12. The HD-WTRU of claim 8 , further comprising:
a transmitter configured to transmit the SR and/or PRACH preamble after receipt of the scheduled downlink shared channel transmission.
13. The HD-WTRU of claim 8 , wherein the HD-WTRU is a machine type communication (MTC) HD-WTRU.
14. The HD-WTRU of claim 8 , wherein the scheduled downlink shared channel transmission is transmitted with a cell radio network transmission identifier (C-RNTI).
15. A half duplex wireless transmit/receive unit (HD-WTRU) comprising:
a receiver configured to receive downlink control information (DCI) on a physical downlink control channel (PDCCH);
circuitry configured to determine that an uplink scheduling request (SR) using a physical random access channel (PRACH) preamble would overlap in time with one or more subframes of a downlink shared channel transmission scheduled by the DCI; and
the receiver configured to receive the scheduled downlink shared channel transmission on the one or more subframes.
16. The HD-WTRU of claim 15 , further comprising:
a transmitter configured to transmit the SR after receipt of the scheduled downlink shared channel transmission.
17. The HD-WTRU of claim 15 , wherein the scheduled downlink shared channel transmission is transmitted with a cell radio network transmission identifier (C-RNTI).