Time hopping in device-to-device transmissions

An apparatus of wireless communications, comprising a circuit configured to:

• receive downlink control information (DCI) and a radio resource control (RRC) configuration from a base station, the DCI signaling a first time hopping pattern indication from a plurality of time hopping pattern indications associated with different time hopping patterns that have different mean inter-arrival times between retransmissions;
• transmit, using a first time and frequency resource, a scheduling assignment for an initial transmission of a message and a retransmission of the message;
• transmit the initial transmission of the message to one or more devices using a second time and frequency resource based at least in part on the scheduling assignment, wherein the message is transmitted in a device-to-device (D2D) transmission;
• determine a time hopping pattern for the retransmission of the message corresponding to a second time hopping pattern indication from the plurality of time hopping pattern indications associated with the RRC configuration, the second time hopping pattern indication identifying a time hopping pattern associated with a mean inter-arrival time between retransmissions different from a mean inter-arrival time between retransmissions of the first time hopping pattern indication;
• determine a third time and frequency resource based at least in part on a frequency of the second time and frequency resource and the time hopping pattern;
• and
• transmit the retransmission of the message using the third time and frequency resource.

An apparatus of wireless communications, comprising:

• a processor;
• memory in electronic communication with the processor;
• and
• instructions stored in the memory, the instructions being executable by the processor to:
• receive downlink control information (DCI) and a radio resource control (RRC) configuration from a base station, the DCI signaling a first time hopping pattern indication from a plurality of time hopping pattern indications associated with different time hopping patterns that have different mean inter-arrival times between retransmissions;
• transmit, using a first time and frequency resource, a scheduling assignment for an initial transmission of a message and a retransmission of the message;
• transmit the initial transmission of the message to one or more devices using a second time and frequency resource based at least in part on the scheduling assignment, wherein the message is transmitted in a device-to-device (D2D) transmission;
• determine a time hopping pattern for the retransmission of the message corresponding to a second time hopping pattern indication from the plurality of time hopping pattern indications associated with the RRC configuration, the second time hopping pattern indication identifying a time hopping pattern associated with a mean inter-arrival time between retransmissions different from a mean inter-arrival time between retransmissions of the first time hopping pattern indication;
• determine a third time and frequency resource based at least in part on a frequency of the second time and frequency resource and the time hopping pattern;
• and
• transmit the retransmission of the message using the third time and frequency resource.

A non-transitory computer-readable medium storing instructions executable by a processor to:

• receive downlink control information (DCI) and a radio resource control (RRC) configuration from a base station, the DCI signaling a first time hopping pattern indication from a plurality of time hopping pattern indications associated with different time hopping patterns that have different mean inter-arrival times between retransmissions;
• transmit, using a first time and frequency resource, a scheduling assignment for an initial transmission of a message and a retransmission of the message;
• transmit the initial transmission of the message to one or more devices using a second time and frequency resource based at least in part on the scheduling assignment, wherein the message is transmitted in a device-to-device (D2D) transmission;
• determine a time hopping pattern for the retransmission of the message corresponding to a second time hopping pattern indication from the plurality of time hopping pattern indications associated with the RRC configuration, the second time hopping pattern indication identifying a time hopping pattern associated with a mean inter-arrival time between retransmissions different from a mean inter-arrival time between retransmissions of the first time hopping pattern indication;
• determine a third time and frequency resource based at least in part on a frequency of the second time and frequency resource and the time hopping pattern;
• and
• transmit the retransmission of the message using the third time and frequency resource.

A method of wireless communications, comprising:

• receiving downlink control information (DCI) and a radio resource control (RRC) configuration from a base station, the DCI signaling a first time hopping pattern indication from a plurality of time hopping pattern indications associated with different time hopping patterns that have different mean inter-arrival times between retransmissions;
• receiving, using a first time and frequency resource, a scheduling assignment for an initial transmission of a message and a retransmission of the message, the scheduling assignment comprising a second time hopping pattern indication from the plurality of time hopping pattern indications associated with the RRC configuration, the second time hopping pattern indication identifying a time hopping pattern associated with a mean inter-arrival time between retransmissions different from a mean inter-arrival time between retransmissions of the first time hopping pattern indication;
• receiving the initial transmission of the message from a device using a second time and frequency resource based at least in part on the scheduling assignment, wherein the message is transmitted in a device-to-device (D2D) transmission;
• determining a time hopping pattern for the retransmission of the message corresponding to the second time hopping pattern indication;
• determining a third time and frequency resource based at least in part on a frequency of the second time and frequency resource and the time hopping pattern;
• and
• receiving the retransmission of the message using the third time and frequency resource.

An apparatus of wireless communications, comprising a circuit configured to:

• receive downlink control information (DCI) and a radio resource control (RRC) configuration from a base station, the DCI signaling a first time hopping pattern indication from a plurality of time hopping pattern indications associated with different time hopping patterns that have different mean inter-arrival times between retransmissions;
• receive, using a first time and frequency resource, a scheduling assignment for an initial transmission of a message and a retransmission of the message, the scheduling assignment comprising a second time hopping pattern indication from the plurality of time hopping pattern indications associated with the RRC configuration, the second time hopping pattern indication identifying a time hopping pattern associated with a mean inter-arrival time between retransmissions different from a mean inter-arrival time between retransmissions of the first time hopping pattern indication;
• receive the initial transmission of the message from a device using a second time and frequency resource based at least in part on the scheduling assignment, wherein the message is transmitted in a device-to-device (D2D) transmission;
• determine a time hopping pattern for the retransmission of the message corresponding to the second time hopping pattern indication;
• determine a third time and frequency resource based at least in part on a frequency of the second time and frequency resource and the time hopping pattern;
• and
• receive the retransmission of the message using the third time and frequency resource.

An apparatus of wireless communications, comprising:

• a processor;
• memory in electronic communication with the processor;
• and
• instructions stored in the memory, the instructions being executable by the processor to:
• receive downlink control information (DCI) and a radio resource control (RRC) configuration from a base station, the DCI signaling a first time hopping pattern indication from a plurality of time hopping pattern indications associated with different time hopping patterns that have different mean inter-arrival times between retransmissions;
• receive, using a first time and frequency resource, a scheduling assignment for an initial transmission of a message and a retransmission of the message, the scheduling assignment comprising a second time hopping pattern indication from the plurality of time hopping pattern indications associated with the RRC configuration, the second time hopping pattern indication identifying a time hopping pattern associated with a mean inter-arrival time between retransmissions different from a mean inter-arrival time between retransmissions of the first time hopping pattern indication;
• receive the initial transmission of the message from a device using a second time and frequency resource based at least in part on the scheduling assignment, wherein the message is transmitted in a device-to-device (D2D) transmission;
• determine a time hopping pattern for the retransmission of the message corresponding to the second time hopping pattern indication;
• determine a third time and frequency resource based at least in part on a frequency of the second time and frequency resource and the time hopping pattern;
• and
• receive the retransmission of the message using the third time and frequency resource.

A non-transitory computer-readable medium storing instructions executable by a processor to:

• receive downlink control information (DCI) and a radio resource control (RRC) configuration from a base station, the DCI signaling a first time hopping pattern indication from a plurality of time hopping pattern indications associated with different time hopping patterns that have different mean inter-arrival times between retransmissions;
• receive, using a first time and frequency resource, a scheduling assignment for an initial transmission of a message and a retransmission of the message, the scheduling assignment comprising a second time hopping pattern indication from the plurality of time hopping pattern indications associated with the RRC configuration, the second time hopping pattern indication identifying a time hopping pattern associated with a mean inter-arrival time between retransmissions different from a mean inter-arrival time between retransmissions of the first time hopping pattern indication;
• receive the initial transmission of the message from a device using a second time and frequency resource based at least in part on the scheduling assignment, wherein the message is transmitted in a device-to-device (D2D) transmission;
• determine a time hopping pattern for the retransmission of the message corresponding to the second time hopping pattern indication;
• determine a third time and frequency resource based at least in part on a frequency of the second time and frequency resource and the time hopping pattern;
• and
• receive the retransmission of the message using the third time and frequency resource.