Method and device for paging in sidelink communication based on DRX
Disclosed are a method and device for sidelink communication based on DRX. A method for operating a transmission terminal comprises the steps of: receiving PHY DRX configuration information from a base station; generating a wakeup signal on the basis of sequence information included in the PHY DRX configuration information; and transmitting the wakeup signal to a reception terminal in a resource region indicated by resource information included in the PHY DRX configuration information.
1 . A method for operating a transmitting terminal in a wireless communication system, the method comprising:
receiving, from a base station, first configuration information on sidelink discontinuous reception (DRX) for at least one of unicast, groupcast or broadcast, the first configuration information including information on a first value indicating a first time duration and a second value indicating a second time duration;
transmitting, to a receiving terminal, second configuration information on the sidelink DRX;
identifying on-duration for the sidelink DRX based on the first configuration information; and
transmitting, to the receiving terminal, a physical layer signal during the on-duration,
wherein one of the first value or the second value is used for an activity for the sidelink DRX based on the physical layer signal.
2 . The method of claim 1 , wherein the first configuration information includes sequence information indicating a sequence used to identify the transmitting terminal among a plurality of transmitting terminals.
3 . The method of claim 2 , wherein the sequence information includes a sequence and a cyclic shift value, wherein the physical layer signal comprises a wake-up signal, and wherein the wake-up signal is generated by applying the cyclic shift value to the sequence.
4 . The method of claim 1 , wherein the physical layer signal comprises a wake-up signal, and
wherein the wake-up signal is generated based on a synchronization signal block (SSB) sequence of the base station or a sidelink(S)-SSB sequence of the transmitting terminal.
5 . The method of claim 2 , wherein the sequence information includes a sequence set configured for each cast type, wherein the physical layer signal comprises a wake-up signal, and
wherein the wake-up signal is generated based on a sequence selected from the sequence set, and the cast type is the groupcast or the unicast.
6 . The method of claim 1 , wherein the first value indicates a first sidelink DRX cycle, and
wherein the second value indicates a second sidelink DRX cycle.
7 . The method of claim 6 , wherein the physical layer signal comprises a wake-up signal,
wherein the first sidelink DRX cycle is greater than the second sidelink DRX cycle, and
wherein a sidelink DRX cycle among the first sidelink DRX cycle and the second sidelink DRX cycle is used according to a number of failures to detect the wake-up signal in the receiving terminal.
8 . The method of claim 6 , wherein the first sidelink DRX cycle or the second sidelink DRX cycle is set equal to an SSB periodicity of the base station or an S-SSB periodicity of the transmitting terminal.
9 . A method for operating a receiving terminal in a communication system, the method comprising:
receiving, from a base station, first configuration information on sidelink discontinuous reception (DRX) configuration for at least one of unicast, groupcast or broadcast, the first configuration information including information on a first value indicating a first time duration and a second value indicating a second time duration;
receiving, from a transmitting terminal, second configuration information on the sidelink DRX;
identifying on-duration for the sidelink DRX based on the first configuration information; and
performing a monitoring operation to detect a physical layer signal during the on-duration,
wherein one of the first value or the second value is used for an activity for the sidelink DRX based on the physical layer signal.
10 . The method of claim 9 , wherein the first value indicates a first sidelink DRX cycle,
wherein the second value indicates a second sidelink DRX cycle,
wherein the physical layer signal comprises a wake-up signal, and wherein a sidelink DRX cycle among the first sidelink DRX cycle and the second sidelink DRX cycle is used according to a number of failures to detect the wake-up signal in the receiving terminal.
11 . The method of claim 9 , wherein the first value indicates a first sidelink DRX cycle,
wherein the second value indicates a second sidelink DRX cycle, and
wherein the first sidelink DRX cycle or the second sidelink DRX cycle is set equal to a synchronization signal block (SSB) periodicity of the base station or a sidelink(S)-SSB periodicity of the transmitting terminal.
12 . The method of claim 9 , wherein the first configuration information further includes sequence information,
wherein the physical layer signal comprises a wake-up signal, and
wherein the sequence information is used to identify a transmitting terminal having transmitted the wake-up signal among a plurality of transmitting terminals.
13 . The method of claim 12 , wherein the sequence information includes a sequence and a cyclic shift value, the wake-up signal is generated by applying the cyclic shift value to the sequence, and the wake-up signal is detected based on the sequence and the cyclic shift value.
14 . The method of claim 12 , wherein the sequence information includes a sequence set configured for each cast type, the wake-up signal is generated based on a sequence selected from the sequence set, and the cast type is the groupcast or the unicast.
15 . The method of claim 9 , wherein the physical layer signal comprises a wake-up signal, and
wherein the wake-up signal is generated based on an SSB sequence of the base station or an S-SSB sequence of the transmitting terminal, and the wake-up signal is detected based on the SSB sequence or the S-SSB sequence.
16 . A transmitting terminal in a wireless communication system, comprising:
a processor; and
a memory storing one or more instructions executable by the processor,
wherein the one or more instructions are executed to:
receive, from a base station, first configuration information on sidelink discontinuous reception (DRX) for at least one of unicast, groupcast or broadcast, the first configuration information including information on a first value indicating a first time duration and a second value indicating a second time duration;
transmit, to a receiving terminal, second configuration information on the sidelink DRX;
identify on-duration for the sidelink DRX based on the first configuration information; and
transmit, to the receiving terminal, a physical layer signal during the on-duration,
wherein one of the first value or the second value is used for an activity for the sidelink DRX based on the physical layer signal.