Method and device for discontinuous reception
The present disclosure provides a method and a device used for discontinuous reception. A first node monitors a first signal in a first time resource pool, a first bit block is used to generate the first signal, the first bit block comprises a MAC PDU, and the first bit block comprises a first identification component; and a second receiver, when the first signal is successfully received in the first time resource pool, monitors a first signaling in a first time-frequency resource block; when the first signal is not successfully received in the first time resource pool, drops monitoring a first signaling in a first time-frequency resource block. The application can avoid the introduction of sidelink MAC CE to maintain the compatibility with the existing standards as far as possible; in addition, the application can reduce the overhead of air interface.
1 . A first node for wireless communications, comprising:
a first receiver, monitoring a first signal in a first time resource pool, a first bit block being used to generate the first signal, the first bit block comprising a MAC Protocol Data Unit (PDU), and the first bit block comprising a first identification component; and
a second receiver, when the first signal is successfully received in the first time resource pool, monitoring a first signaling on a first time-frequency resource block; and when the first signal is not successfully received in the first time resource pool, dropping monitoring a first signaling on a first time-frequency resource block;
the second receiver, receiving at least one target signaling in the first time resource pool, wherein each of the at least one target signaling is a physical layer signaling, and each of the at least one target signaling comprises a second identification component; when the first signal is monitored in the first time resource pool, the first signal is scheduled by one of the at least one target signaling;
wherein the first signaling is a physical layer signaling, and the first signaling comprises the second identification component; both the first identification component and the second identification component belong to a first link layer identifier (ID).
2 . The first node according to claim 1 , comprising:
the first receiver, determining a first link layer ID list, the first link layer ID being any link layer ID in the first link layer ID list.
3 . The first node according to claim 1 , comprising:
a first transmitter, transmitting a second signaling; the second signaling indicating a first parameter set;
and the first parameter set indicating the first time resource pool.
4 . The first node according to claim 1 , comprising:
when the first signal is not successfully received in the first time resource pool, the first receiver keeping counting of a first timer; and when the first signal is successfully received in the first time resource pool, the first receiver restarting a first timer.
5 . The first node according to claim 1 , comprising:
when the first signal is not successfully received in the first time resource pool, the first receiver maintaining a halted state of a first timer; and when the first signal is successfully received in the first time resource pool, the first receiver starting the first timer.
6 . The first node according to claim 1 , comprising:
when a radio signal scheduled by any of the at least one target signaling is not correctly decoded, the first receiver starts a third timer; and when radio signal(s) scheduled by each of the at least one target signaling is (are) correctly decoded, the first receiver maintains a halted state of the third timer;
wherein the third timer is in a halted state in a slot to which the first time-frequency resource block belongs.
7 . A second node for wireless communications, comprising:
a second transmitter, transmitting a first signal, a first bit block being used to generate the first signal, the first bit block comprising a MAC PDU, and the first bit block comprising a first identification component; and
a third transmitter, selecting an appropriate time-frequency resource block out of a candidate time-frequency resource pool, and transmitting a first signaling in the appropriate time-frequency resource block;
the third transmitter, transmitting at least one target signaling in the first time resource pool, wherein each of the at least one target signaling is a physical layer signaling, and each of the at least one target signaling comprises a second identification component; the first signal is scheduled by one of the at least one target signaling;
wherein the first signaling is a physical layer signaling, and the first signaling comprises the second identification component; both the first identification component and the second identification component belong to a first link layer ID; when the first signal is transmitted in the first time resource pool, the candidate time-frequency resource pool comprises a first time-frequency resource block; and when the first signal is not transmitted in the first time resource pool, the candidate time-frequency resource pool does not comprise a first time-frequency resource block.
8 . The second node according to claim 7 , comprising:
the second transmitter, determining a second link layer ID list, and the first link layer ID is a link layer ID in the second link layer ID list.
9 . The second node according to claim 7 , comprising:
a third receiver, receiving a second signaling; the second signaling indicating a first parameter set; and
the first parameter set indicating the first time resource pool.
10 . The second node according to claim 7 , comprising:
when the first signal is not successfully received in the first time resource pool, and when time-domain resources occupied by the first signal are not present in the first time resource pool, the third transmitter maintains counting of a first reference timer; when time-domain resources occupied by the first signal are present in the first time resource pool, the third transmitter restarting a first reference timer.
11 . The second node according to claim 7 , comprising:
when time-domain resources occupied by the first signal are not present in the first time resource pool, the third transmitter maintaining a halted state of a first reference timer; and when time-domain resources occupied by the first signal are present in the first time resource pool, the third transmitter starting the first reference timer.
12 . The second node according to claim 7 , comprising:
when an ACK associated with any of the at least one target signaling is not received, starting a third reference timer; and when ACK(s) associated with each of the at least one target signaling is (are) received, maintaining a halted state of the third reference timer;
wherein the third reference timer is in a halted state in a slot to which the first time-frequency resource block belongs.
13 . A method in a first node for wireless communications, comprising:
monitoring a first signal in a first time resource pool, a first bit block being used to generate the first signal, the first bit block comprising a MAC PDU, and the first bit block comprising a first identification component;
when the first signal is successfully received in the first time resource pool, monitoring a first signaling on a first time-frequency resource block; and when the first signal is not successfully received in the first time resource pool, dropping monitoring a first signaling on a first time-frequency resource block; and
receiving at least one target signaling in the first time resource pool, wherein each of the at least one target signaling is a physical layer signaling, and each of the at least one target signaling comprises a second identification component; and when the first signal is monitored in the first time resource pool, the first signal is scheduled by one of the at least one target signaling
wherein the first signaling is a physical layer signaling, and the first signaling comprises the second identification component; both the first identification component and the second identification component belong to a first link layer ID.
14 . The method in a first node for wireless communications according to claim 13 , comprising:
determining a first link layer ID list, the first link layer ID being any link layer ID in the first link layer ID list.
15 . A method in a second node for wireless communications, comprising:
transmitting a first signal, a first bit block being used to generate the first signal, the first bit block comprising a MAC PDU, and the first bit block comprising a first identification component;
selecting an appropriate time-frequency resource block out of a candidate time-frequency resource pool, and transmitting a first signaling in the appropriate time-frequency resource block; and
transmitting at least one target signaling in the first time resource pool, wherein each of the at least one target signaling is a physical layer signaling, and each of the at least one target signaling comprises a second identification component; the first signal is scheduled by one of the at least one target signaling
wherein the first signaling is a physical layer signaling, and the first signaling comprises the second identification component; both the first identification component and the second identification component belong to a first link layer ID; when the first signal is transmitted in the first time resource pool, the candidate time-frequency resource pool comprises a first time-frequency resource block; and when the first signal is not transmitted in the first time resource pool, the candidate time-frequency resource pool does not comprise a first time-frequency resource block.
16 . The method in a second node for wireless communications according to claim 15 , comprising:
determining a second link layer ID list, the first link layer ID is a link layer ID in the second link layer ID list.