Resource cycle methodology
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may wake up, starting at a subframe, based at least in part on a subframe index of a resource cycle and a system frame number (SFN) wraparound offset that accounts for accumulated lengths of a hyper frame. The UE may receive a data burst during the subframe. Numerous other aspects are described.
1 . An apparatus for wireless communication at a user equipment (UE), comprising:
one or more memories; and
one or more processors, coupled with the one or more memories, configured to:
wake up the apparatus starting at a subframe, based at least in part on a specified time offset, a discontinuous reception (DRX) cycle number of a DRX cycle, and a length of the DRX cycle, wherein the specified time offset is in accordance with a periodicity of multimedia data bursts; and
receive a multimedia data burst during the subframe.
2 . The apparatus of claim 1 , wherein the DRX cycle number is equal to (10×a system frame number (SFN) of a frame comprising the subframe+a subframe number of the subframe) divided by the length of the DRX cycle.
3 . The apparatus of claim 2 , wherein the one or more processors, to wake up the apparatus, are configured to wake up the apparatus further based at least in part on an SFN wraparound offset.
4 . The apparatus of claim 3 , wherein the SFN wraparound offset is equal to (10240×m), and wherein m updates to m+1 when the SFN returns to 0 (zero).
5 . The apparatus of claim 3 , wherein the one or more processors, to wake up the apparatus, are configured to wake up the apparatus responsive to (10×the SFN+the subframe number+the SFN wraparound offset) modulo the length of the DRX cycle being equal to [(n×the specified time offset)+a starting offset+(DRX time reference SFN×10] modulo the length of the DRX cycle, and
wherein n updates to n+1 when (10×the SFN+the subframe number+the SFN wraparound offset) modulo (the length of the DRX cycle×a specified quantity of DRX cycles+the specified time offset) is equal to a specified timing value.
6 . The apparatus of claim 5 , wherein the SFN wraparound offset is 10240×m, wherein m updates to m+1 when the SFN returns to the DRX time reference SFN, and wherein the DRX time reference SFN is 0 or 512.
7 . The apparatus of claim 5 , wherein the one or more processors are configured to receive an indication of the DRX time reference SFN.
8 . The apparatus of claim 1 , wherein an anchor cycle that includes the DRX cycle also includes two or more leap cycles.
9 . The apparatus of claim 8 , wherein the one or more processors are configured to receive an indication of the two or more leap cycles or an indication of a timing of the two or more leap cycles.
10 . The apparatus of claim 8 , wherein a leap cycle offset pattern of the two or more leap cycles includes (0 milliseconds (ms), 1 ms, 1 ms) or (1 ms, 1 ms, 0 ms).
11 . An apparatus for wireless communication at a user equipment (UE), comprising:
one or more memories; and
one or more processors, coupled with the one or more memories, configured to:
wake up the apparatus, starting at a subframe, based at least in part on a specified time offset and a discontinuous reception (DRX) number of a DRX cycle and a DRX time reference system frame number (SFN), wherein the specified time offset is in accordance with a periodicity of multimedia data bursts; and
receive a multimedia data burst during the subframe.
12 . The apparatus of claim 11 , wherein the one or more processors, to wake up the apparatus, are configured to wake up the apparatus responsive to (an SFN of a frame comprising the subframe×a quantity of subframes per frame)+a subframe number of the subframe being equal to [the DRX time reference SFN×the quantity of subframes per subframe+a starting offset+a DRX on duration number×a length of the DRX cycle+floor (the DRX on duration number/the specified time offset)×a specified quantity of DRX cycles] modulo (1024×the quantity of subframes per frame).
13 . An apparatus for wireless communication at a user equipment (UE), comprising:
one or more memories; and
one or more processors, coupled with the one or more memories, configured to:
wake up the apparatus, starting at a subframe, based at least in part on a specified time offset and a resource cycle number of a resource cycle, wherein the specified time offset is in accordance with a periodicity of multimedia data bursts, and wherein the resource cycle number is based at least in part on the specified time offset; and
receive a multimedia data burst during the subframe.
14 . The apparatus of claim 13 , wherein the resource cycle is a cycle for one of a channel state information (CSI) reference signal, a CSI interference measurement resource, or a sounding reference signal.
15 . The apparatus of claim 13 , wherein the resource cycle is a cycle for a scheduling request.
16 . The apparatus of claim 13 , wherein the resource cycle is a cycle for a configured grant resource or a semi-persistent scheduling resource.
17 . The apparatus of claim 13 , wherein the resource cycle is a cycle for a channel state information report or a buffer status report.
18 . The apparatus of claim 13 , wherein the resource cycle is a cycle for physical downlink control channel monitoring or for physical uplink control channel resources.
19 . The apparatus of claim 13 , wherein the one or more processors, to wake up the apparatus, are configured to wake up the apparatus responsive to (10×a system frame number (SFN) of a frame comprising the subframe+a subframe number of the subframe+an SFN wraparound offset) modulo the length of the resource cycle being equal to ((n×the specified time offset)+a starting offset) modulo the length of the resource cycle,
wherein n updates to n+1 when (10×the SFN+the subframe number+the SFN wraparound offset) modulo (the length of the resource cycle×a specified quantity of resource cycles+the specified time offset) is equal to a specified timing value, and
wherein the SFN wraparound offset is 10240×m, and wherein m updates to m+1 when the SFN returns to 0 (zero).
20 . The apparatus of claim 13 , wherein the one or more processors, to wake up the apparatus, are configured to wake up the apparatus further based at least in part on an SFN wraparound offset, wherein the SFN wraparound offset is equal to (10240×m), and wherein m updates to m+1 when a SFN of a frame comprising the subframe returns to 0 (zero).
21 . An apparatus for wireless communication at a user equipment (UE), comprising:
one or more memories; and
one or more processors, coupled with the one or more memories, configured to:
wake up, starting at a subframe, based at least in part on a subframe index of a resource cycle and a system frame number (SFN) wraparound offset that updates upon SFN wraparound to account for accumulated lengths of a hyper frame; and
receive a data burst during the subframe.
22 . The apparatus of claim 21 , wherein the SFN wraparound offset is equal to (a length of the hyper frame×m).
23 . The apparatus of claim 22 , wherein the length of the hyper frame is equal to 10240.
24 . The apparatus of claim 22 , wherein the subframe index is equal to (10×an SFN of a frame comprising the subframe)+a subframe number of the subframe.
25 . The apparatus of claim 24 , wherein m updates to m+1 when the SFN returns to 0 (zero) or a time reference SFN.
26 . The apparatus of claim 21 , wherein the one or more processors, to wake up, are configured to wake up when (the subframe index+the SFN wraparound offset) modulo a length of the resource cycle is equal to [(a starting offset+(a time reference SFN×10)] modulo the length of the resource cycle.
27 . The apparatus of claim 21 , wherein the one or more processors are configured to transmit an indication of a capability of using the SFN wraparound offset.
28 . The apparatus of claim 21 , wherein the one or more processors are configured to activate the SFN wraparound offset.
29 . The apparatus of claim 21 , wherein the SFN wraparound offset is equal to (a length of the hyper frame×m×k), where k=1 for activation of the SFN wraparound offset k=0 for deactivation of the SFN wraparound offset.
30 . The apparatus of claim 21 , wherein the one or more processors are configured to receive a configuration of one or more of DRX short cycles or DRX long cycles that are backward compatible for use of the SFN wraparound offset.