Control overhead reduction in sidelink network

A method for wireless communications at a second user equipment (UE), comprising:

• identifying, for a sidelink connection, a frame comprising a control portion and a data portion that is associated with the control portion, the control portion comprising a plurality of control regions, each control region comprising a first transmission time interval for channel reservation requests for a group of UEs and a second transmission time interval for channel reservation responses for the group of UEs;
• obtaining access to the sidelink connection based at least in part on a successful channel access procedure in a first instance of the frame;
• and
• transmitting, to a first UE, a data signal in the data portion of the first instance of the frame and in at least a part of the control portion of a second instance of the frame that follows the first instance.

A method for wireless communications at a third user equipment (UE), comprising:

• identifying, for a sidelink connection, a frame comprising a control portion and a data portion that is associated with the control portion, the control portion comprising a plurality of control regions, each control region comprising a first transmission time interval for channel reservation requests for a group of UEs and a second transmission time interval for channel reservation responses for the group of UEs;
• receiving, in the first transmission time interval of the frame, a channel reservation request from a fourth UE;
• receiving, from a first UE, a signal indicating that the first UE is receiving data from a second UE during at least a part of the control portion of the frame;
• and
• determining to refrain from transmitting a channel reservation response to the fourth UE in response to the received channel reservation request based at least in part on receiving the signal indicating that the first UE is receiving data from a second UE.

A method for wireless communications at a fourth user equipment, comprising:

• identifying, for a sidelink connection, a frame comprising a control portion and a data portion that is associated with the control portion, the control portion comprising a plurality of control regions, each control region comprising a first transmission time interval for channel reservation requests for a group of UEs and a second transmission time interval for channel reservation responses for the group of UEs;
• transmitting, in the first transmission time interval of the frame, a channel reservation request to a third UE;
• receiving, from a first UE, a signal indicating that the first UE is receiving data from a second UE during at least a part of the control portion of the frame;
• and
• determining to refrain from transmitting a data signal to the third UE in response to the received signal indicating the first UE is receiving data from a second UE.