Group based scheduled and autonomous uplink coexistence
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a group identifier of the UE. The UE may receive, from the base station, an indication of one or more group identifiers associated with scheduled communications with the base station during a time period. The UE may contend, based at least in part on the group identifier of the UE and the one or more group identifiers received from the base station, for access to a set of autonomous uplink (AUL) resources during the time period. The UE may perform, based at least in part on the contending, an AUL transmission to the base station using the set of autonomous uplink resources.
1. A method for wireless communication at a base station, comprising:
determining that a downlink communication to a user equipment (UE) is to be performed using a first transmit beam in a millimeter wave (mmW) wireless communication system;
identifying one or more neighboring UEs of the UE that are configured for autonomous uplink (AUL) communications;
transmitting, using a second transmit beam that has a wider beam width than the first transmit beam, a reservation message providing an indication of the downlink communication, wherein the indication is conveyed in a common downlink control indicator (DCI), and wherein the common DCI is quasi co-located with a DCI that the one or more neighboring UEs are configured to monitor for the AUL communications; and
performing the downlink communication to the UE using the first transmit beam.
2. The method of claim 1 , wherein the second transmit beam comprises at least one of: a P1 transmit beam or a P2 transmit beam.
3. The method of claim 1 , wherein the first transmit beam comprises a P3 transmit beam.
4. An apparatus for wireless communications, comprising:
one or more processors;
memory in electronic communication with the one or more processors; and
instructions stored in the memory, wherein the instructions are executable by the one or more processors to cause the apparatus to:
determine that a downlink communication to a user equipment (UE) is to be performed using a first transmit beam in a millimeter wave (mmW) wireless communication system;
identify one or more neighboring UEs of the UE that are configured for autonomous uplink (AUL) communications;
transmit, using a second transmit beam that has a wider beam width than the first transmit beam, a reservation message providing an indication of the downlink communication, wherein the indication is conveyed in a common downlink control indicator (DCI), and wherein the common DCI is quasi co-located with a DCI that the one or more neighboring UEs are configured to monitor for the AUL communications; and
perform the downlink communication to the UE using the first transmit beam.
5. The apparatus of claim 4 , wherein the second transmit beam comprises at least one of: a P1 transmit beam or a P2 transmit beam.
6. The apparatus of claim 4 , wherein the first transmit beam comprises a P3 transmit beam.