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 that is added to an on duration of a discontinuous reception (DRX) cycle based at least in part on a DRX cycle number of the DRX cycle and a DRX time reference system frame number (SFN), wherein the specified time offset is based at least in part on a periodicity of multimedia data bursts, and wherein the DRX cycle number is based at least in part on an initial value of a DRX counter, the initial value being based at least in part on the DRX time reference SFN; and
receive a multimedia data burst during the subframe.
2 . The apparatus of claim 1 , wherein the DRX cycle number is equal to [(10× an SFN of a frame comprising the subframe+a subframe number of the subframe)−(n× the specified time offset)] divided by a 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 when (10×the SFN+the subframe number+the SFN wraparound offset) modulo a length of the DRX cycle is equal to [(n× the specified time offset)+a starting offset+ (the 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 3 , wherein the one or more processors are configured to operate without the SFN wraparound offset for legacy DRX operation.
9 . The apparatus of claim 3 , wherein the one or more processors are configured to activate the SFN wraparound offset based on configuration information received from a network entity via at least one of: radio resource control (RRC) signaling or downlink control information (DCI).
10 . The apparatus of claim 3 , 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.
11 . The apparatus of claim 1 , wherein an anchor cycle that includes the DRX cycle also includes two or more leap cycles.
12 . The apparatus of claim 11 , 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.
13 . The apparatus of claim 11 , 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).
14 . 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 that is added to an on duration of a discontinuous reception (DRX) cycle, based at least in part on a DRX cycle number of the DRX cycle and a DRX time reference system frame number (SFN), wherein the specified time offset is based at least in part on a periodicity of multimedia data bursts, and wherein the DRX cycle number is based at least in part on an initial value of a DRX counter, the initial value being based at least in part on the DRX time reference SFN; and
receive a multimedia data burst during the subframe.
15 . The apparatus of claim 14 , wherein the one or more processors, to wake up the apparatus, are configured to wake up the apparatus when (an SFN of a frame comprising the subframe× a quantity of subframes per frame)+a subframe number of the subframe is 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).
16 . 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 that is added to an instance of a resource cycle, based at least in part on a resource cycle number of the resource cycle and a length of the resource cycle, wherein the specified time offset is based at least in part on a periodicity of multimedia data bursts, and wherein the resource cycle number is based at least in part on an initial value of a resource cycle counter, the initial value being based at least in part on a resource time reference system frame number (SFN); and
receive a multimedia data burst during the subframe.
17 . The apparatus of claim 16 , 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.
18 . The apparatus of claim 16 , wherein the resource cycle is a cycle for a scheduling request.
19 . The apparatus of claim 16 , wherein the resource cycle is a cycle for a configured grant resource or a semi-persistent scheduling resource.
20 . The apparatus of claim 16 , wherein the resource cycle is a cycle for a channel state information report or a buffer status report.
21 . The apparatus of claim 16 , wherein the resource cycle is a cycle for physical downlink control channel monitoring or for physical uplink control channel resources.
22 . The apparatus of claim 16 , wherein the one or more processors, to wake up the apparatus, are configured to wake up the apparatus when (10× a an SFN of a frame comprising the subframe+a subframe number of the subframe+an SFN wraparound offset) modulo the length of the resource cycle is 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, wherein the SFN wraparound offset is 10240× m, and wherein m updates to m+1 when the SFN returns to 0 (zero).
23 . 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 accounts for accumulated lengths of a hyper frame, wherein the SFN wraparound offset is equal to a length of the hyper frame multiplied by a variable m, an initial value of m being based at least in part on a time reference system frame number (SFN); and
receive a data burst during the subframe.
24 . The apparatus of claim 23 , wherein the one or more processors, to wake up, are configured to wake up based at least in part on (the subframe index+the SFN wraparound offset) modulo a length of the resource cycle being equal to a starting offset modulo the length of the resource cycle.
25 . The apparatus of claim 24 , wherein the initial value of m is further based at least in part on an SFN in which a configuration for the resource cycle is received.
26 . The apparatus of claim 25 , wherein:
the time reference SFN is 512, and the initial value of m is 1 based at least in part on the SFN being less than 512,
the time reference SFN is 512, and the initial value of m is 0 based at least in part on the SFN between 512 and the length of the hyper frame, or
the time reference SFN is 0, and the initial value of m is 0.
27 . The apparatus of claim 24 , wherein an initial value of m is further based at least in part on a hyper frame number (HFN) in which a configuration for the resource cycle is received.
28 . The apparatus of claim 23 , wherein the length of the hyper frame is equal to 10240.
29 . The apparatus of claim 23 , wherein the subframe index is equal to (10× an SFN of a frame comprising the subframe)+a subframe number of the subframe.
30 . The apparatus of claim 29 , wherein m updates to m+1 when the SFN returns to 0 (zero) or the time reference SFN, and wherein the time reference SFN is 0 or 512.
31 . The apparatus of claim 30 , wherein m resets to 0 based at least in part on a next value of m being a configured value.
32 . The apparatus of claim 23 , 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.
33 . The apparatus of claim 23 , wherein:
the time reference SFN is 512, and the initial value of m is 1 based at least in part on the SFN being less than 512,
the time reference SFN is 512, and the initial value of m is 0 based at least in part on the SFN between 512 and the length of the hyper frame, or
the time reference SFN is 0, and the initial value of m is 0.
34 . The apparatus of claim 23 , wherein the resource cycle includes a discontinuous reception (DRX) cycle, and the data burst is a multimedia data burst.
35 . The apparatus of claim 23 , wherein the one or more processors are configured to transmit an indication of a capability of using the SFN wraparound offset.
36 . The apparatus of claim 23 , wherein the one or more processors are configured to activate the SFN wraparound offset.
37 . The apparatus of claim 23 , wherein the SFN wraparound offset is equal to (the 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.
38 . The apparatus of claim 23 , 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.