Sidelink discontinuous reception configuration

Abstract

Apparatuses, methods, and systems are disclosed for sidlink discontinuous reception configuration. One method (1000) includes accessing (1002) a sidelink discontinuous reception configuration. The sidelink discontinuous reception configuration corresponds to a quality of service class; an identifier of the quality of service class; at least on attribute of the quality of service class; or some combination thereof. The method (1000) includes performing (1004) sidelink communication based on the sidelink discontinuous reception configuration.

1 . An apparatus comprising:
 a processor that:   accesses a sidelink discontinuous reception configuration, wherein the sidelink discontinuous reception configuration corresponds to:
 a quality of service class; 
 an identifier of the quality of service class; 
 at least one attribute of the quality of service class; 
 or some combination thereof; and 
   performs sidelink communication based on the sidelink discontinuous reception configuration.   
     
     
         2 . The apparatus of  claim 1 , wherein the sidelink discontinuous reception configuration comprises an on-duration timer, a periodicity, or some combination thereof. 
     
     
         3 . The apparatus of  claim 2 , further comprising a receiver that receives information indicating the offset for the on-duration, the on-duration timer, the periodicity, or some combination thereof. 
     
     
         4 . The apparatus of  claim 3 , wherein the information indicating the offset for the on-duration, the on-duration timer, the periodicity, or some combination thereof is received via non-access stratum signaling or radio resource control signaling. 
     
     
         5 . The apparatus of  claim 1 , wherein the quality of service class comprises a quality of service class identifier for sidelink communication. 
     
     
         6 . An apparatus comprising a first user equipment, the apparatus further comprises:
 a processor that determines at least one parameter for a sidelink discontinuous reception configuration;   a transmitter that transmits the at least one parameter for the sidelink discontinuous reception configuration to a second user equipment; and   a receiver that receives feedback from the second user equipment indicating acceptance of the at least one parameter for the sidelink discontinuous reception configuration.   
     
     
         7 . The apparatus of  claim 6 , wherein the transmitter and the receiver communicate with the second user equipment based on the sidelink discontinuous reception configuration. 
     
     
         8 . The apparatus of  claim 6 , wherein the at least one parameter comprises an offset for an on-duration, an on-duration timer, a periodicity, or some combination thereof. 
     
     
         9 . The apparatus of  claim 6 , wherein the processor determining the at least one parameter for the sidelink discontinuous reception configuration comprises the processor determining a change to the at least one parameter from a prior sidelink discontinuous reception configuration used by the first user equipment and the second user equipment. 
     
     
         10 . The apparatus of  claim 6 , wherein the at least one parameter for the sidelink discontinuous reception configuration is transmitted to the second user equipment using a sidelink interface, non-access stratum signaling, or sidelink radio resource control signaling. 
     
     
         11 . The apparatus of  claim 6 , wherein the at least one parameter for the sidelink discontinuous reception configuration is determined based on discontinuous reception alignment information received from a network device. 
     
     
         12 . (canceled) 
     
     
         13 . (canceled) 
     
     
         14 . (canceled) 
     
     
         15 . (canceled) 
     
     
         16 . An apparatus comprising:
 a processor that accesses a sidelink discontinuous reception configuration, wherein the sidelink discontinuous reception configuration comprises an offset for an on-duration, an on-duration timer, and a periodicity;   a transmitter; and   a receiver, wherein the transmitter transmits sidelink data, the receiver receives the sidelink data, or a combination thereof;   wherein:   in response to the transmitter transmitting sidelink data, the receiver receiving the sidelink data, or a combination thereof, the processor starts a sidelink inactivity timer;   the processor restarts the sidelink inactivity timer in response to:
 indicating a negative acknowledgement on a physical uplink control channel to request a retransmission grant to a base station; 
 indicating an acknowledgement on the physical uplink control channel and in response to having a non-empty sidelink buffer to the base station; 
 receiving hybrid automatic repeat request feedback on a physical sidelink feedback channel from a sidelink receiver user equipment; 
 transmitting a sidelink scheduling request to a base station; 
 transmitting a sidelink buffer status report to the base station; 
 requesting a channel state information report on sidelink from a peer user equipment; 
 receiving a request for a channel state information report on sidelink from a peer user equipment; 
 receiving sidelink control information from the sidelink transmitter user equipment; 
 receiving data from the sidelink transmitter user equipment; 
 transmitting a physical sidelink feedback channel negative acknowledgement feedback to the sidelink transmitter user equipment; 
 transmitting sidelink control information requesting sidelink physical sidelink feedback channel feedback; 
 transmitting non-last sidelink control information while performing blind re-transmissions; 
 transmitting non-last data while performing blind re-transmissions; 
 a sync source using a value of a sidelink inactivity timer greater than a predetermined value; 
 or some combination thereof. 
   
     
     
         17 . The apparatus of  claim 16 , wherein the processor, in response to the on-duration timer expiring and the sidelink inactivity timer expiring, enters a sleep mode.