Method and BS for Scheduling UE, and Method and UE for Transmitting HARQ

A method used in a Base Station (BS) for scheduling a User Equipment (UE), the method comprising:

• determining four sets of Physical Uplink Control CHannel (PUCCH) format 1b with channel selection resources, which include a part of Control Channel Element (CCE)-mapped dynamic Hybrid Automatic Repeat Request (HARQ) feedback resources reserved for the UE transmitting HARQ feedback to the BS by using PUCCH format 1a/1b, each set including two PUCCH format 1b with channel selection resources;
• selecting one of the four sets of PUCCH format 1b with channel selection resources as candidate resources, which are available for the UE transmitting HARQ feedback to the BS by using PUCCH format 1b with channel selection;
• and
• transmitting to the UE an indication indicating the selected one of the four sets of PUCCH format 1b with channel selection resources.

A method used in a User Equipment (UE) for transmitting Hybrid Automatic Repeat Request (HARQ) feedback to a Base Station (BS) by using Physical Uplink Control CHannel (PUCCH) format 1b with channel selection, the method comprising:

• receiving, from the BS, an indication indicating a set of PUCCH format 1b with channel selection resources among four sets of PUCCH format 1b with channel selection resources, which include a part of Control Channel Element (CCE)-mapped dynamic HARQ feedback resources reserved for the UE transmitting HARQ feedback to the BS by using PUCCH format 1a/1b, each set including two PUCCH format 1b with channel selection resources;
• determining two PUCCH format 1b with channel selection resources based on a CCE index allocated to the UE;
• selecting, from the set of PUCCH format 1b with channel selection resources indicated by the received indication and the determined two PUCCH format 1b with channel selection resources, a PUCCH format 1b with channel selection resource;
• and
• transmitting the HARQ feedback to the BS by using the selected PUCCH format 1b with channel selection resource.

A Base Station (BS) configured for scheduling a User Equipment (UE), the BS comprising:

• communication circuitry configured for wirelessly communicating with the UE;
• and
• processing circuitry operatively associated with the communication circuitry and configured to:
• determine four sets of Physical Uplink Control CHannel (PUCCH) format 1b with channel selection resources, which include a part of Control Channel Element (CCE)-mapped dynamic Hybrid Automatic Repeat Request (HARQ) feedback resources reserved for the UE transmitting HARQ feedback to the BS by using PUCCH format 1a/1b, each set including two PUCCH format 1b with channel selection resources;
• select one of the four sets of PUCCH format 1b with channel selection resources as candidate resources, which are available for the UE transmitting HARQ feedback to the BS by using PUCCH format 1b with channel selection;
• and
• transmit to the UE an indication indicating the selected one of the four sets of PUCCH format 1b with channel selection resources.

A User Equipment (UE) for transmitting Hybrid Automatic Repeat Request (HARQ) feedback to a Base Station (BS) by using Physical Uplink Control CHannel (PUCCH) format 1b with channel selection, the UE comprising:

• communication circuitry configured for wirelessly communicating with the BS;
• and
• processing circuitry operatively associated with the communication circuitry and configured to:
• receive, from the BS, an indication indicating a set of PUCCH format 1b with channel selection resources among four sets of PUCCH format 1b with channel selection resources, which include a part of Control Channel Element (CCE)-mapped dynamic HARQ feedback resources reserved for the UE transmitting Hybrid Automatic Repeat Request (HARQ) feedback to the BS by using PUCCH format 1a/1b, each set including two PUCCH format 1b with channel selection resources;
• determine two PUCCH format 1b with channel selection resources based on a CCE index allocated to the UE;
• select, from the set of PUCCH format 1b with channel selection resources indicated by the received indication and the determined two PUCCH format 1b with channel selection resources, a PUCCH format 1b with channel selection resource;
• and
• transmit the HARQ feedback to the BS on the selected PUCCH format 1b with channel selection resource.

A non-transitory computer-readable storage medium storing a computer program for scheduling a User Equipment (UE), the computer program product storing instructions that, when executed by processing circuitry of a Base Station (BS), cause the BS to:

• determine four sets of Physical Uplink Control CHannel (PUCCH) format 1b with channel selection resources, which include a part of Control Channel Element (CCE)-mapped dynamic Hybrid Automatic Repeat Request (HARQ) feedback resources reserved for the UE transmitting HARQ feedback to the BS by using PUCCH format 1a/1b, each set including two PUCCH format 1b with channel selection resources;
• select one of the four sets of PUCCH format 1b with channel selection resources as candidate resources, which are available for the UE transmitting HARQ feedback to the BS by using PUCCH format 1b with channel selection;
• and
• transmit to the UE an indication indicating the selected one of the four sets of PUCCH format 1b with channel selection resources.

A non-transitory computer-readable storage medium storing a computer program for transmitting Hybrid Automatic Repeat Request (HARQ) feedback to a Base Station (BS) by using Physical Uplink Control CHannel (PUCCH) format 1b with channel selection, the computer program product storing instructions that, when executed by processing circuitry of a User Equipment (UE), cause the UE to:

• receive, from the BS, an indication indicating a set of PUCCH format 1b with channel selection resources among four sets of PUCCH format 1b with channel selection resources, which include a part of Control Channel Element (CCE)-mapped dynamic HARQ feedback resources reserved for the UE transmitting Hybrid Automatic Repeat Request (HARQ) feedback to the BS by using PUCCH format 1a/1b, each set including two PUCCH format 1b with channel selection resources;
• determine two PUCCH format 1b with channel selection resources based on a CCE index allocated to the UE;
• select, from the set of PUCCH format 1b with channel selection resources indicated by the received indication and the determined two PUCCH format 1b with channel selection resources, a PUCCH format 1b with channel selection resource;
• and
• transmit the HARQ feedback to the BS on the selected PUCCH format 1b with channel selection resource.