METHOD AND DEVICE USED IN COMMUNICATION NODE FOR WIRELESS COMMUNICATION
The communication node receives a first information block, the first information block being used to determine a first resource block; and transmits a first signaling in the first resource block, the first signaling being used to indicate a first index; the first index is one of multiple candidate indexes, and any of the multiple candidate indexes is a non-negative integer; any of the multiple candidate indexes corresponds to at least one reference signal resource, and an uplink transmission being associated with a reference signal resource corresponding to the first index is non-synchronised. This application proposes an uplink timing recovery scheme based on reporting for the problem that the UE cannot recover the uplink timing in time, which triggers uplink timing recovery in a timely manner via UE reporting of the non-synchronisation in uplink timing.
1 . A first node for wireless communications, comprising:
a first receiver, receiving a first information block, the first information block being used to determine a first resource block; and
a first transmitter, transmitting a first signaling in the first resource block, the first signaling being used to indicate a first index;
wherein the first index is one of multiple candidate indexes, and any of the multiple candidate indexes is a non-negative integer; any of the multiple candidate indexes corresponds to at least one reference signal resource, and an uplink transmission being associated with a reference signal resource corresponding to the first index is non-synchronised.
2 . The first node according to claim 1 , characterized in comprising:
the first receiver, determining that a first condition is satisfied, that the first condition is satisfied being used to trigger the first signaling;
wherein the first condition is any condition in a first condition set, the first condition set including at least one condition, one condition in the first condition set including expiration of a first timer; a state of the first timer is used to determine whether the uplink transmission being associated with the reference signal resource corresponding to the first index is synchronised.
3 . The first node according to claim 2 , characterized in that one condition in the first condition set includes that a change in a measurement result of the reference signal resource corresponding to the first index over a given time interval exceeds a threshold.
4 . The first node according to claim 2 , characterized in that one condition in the first condition set includes that a change in a measurement result of the reference signal resource corresponding to the first index over a given time interval exceeds a threshold and that a second timer does not expire.
5 . The first node according to claim 2 , characterized in comprising:
the first receiver, triggering a first out-of-sync report as a response to that the first condition is satisfied; that the first out-of-sync report is satisfied being used to trigger the first signaling.
6 . The first node according to claim 5 , characterized in comprising:
the first receiver, receiving a first timing advance command; and as a response to the first timing advance command being received, canceling the first out-of-sync report;
wherein the first timing advance command is used to indicate an amount of timing advance being associated with the reference signal resource corresponding to the first index.
7 . The first node according to claim 5 , characterized in comprising:
the first transmitter, canceling the first out-of-sync report as a response to the first signaling being transmitted.
8 . The first node according to claim 5 , characterized in comprising:
the first receiver, receiving a first DCI, the first DCI being used to indicate a first reference signal resource, the first reference signal resource being used for a first random access procedure; and canceling the first out-of-sync report as a response to the first DCI being received;
wherein the first reference signal resource is associated with the first index; the first DCI is a physical layer signaling.
9 . The first node according to claim 1 , characterized in comprising:
the first receiver, receiving a first DCI, the first DCI being used to indicate a first reference signal resource, the first reference signal resource being used for a first random access procedure;
wherein the first reference signal resource is associated with the first index; the first DCI is a physical layer signaling.
10 . The first node according to claim 9 , characterized in comprising:
the first transmitter, transmitting a first signal according to the first DCI, the first signal including a random access preamble; and
the first receiver, monitoring a second DCI as a response to the first signal being transmitted;
wherein the first signal and the second DCI belong to the first random access procedure; the second DCI is a physical layer signaling.
11 . The first node according to claim 9 , characterized in comprising:
the first transmitter, monitoring the first DCI as a response to the first signaling being transmitted.
12 . The first node according to claim 2 , characterized in comprising:
the first receiver, receiving a first DCI, the first DCI being used to indicate a first reference signal resource, the first reference signal resource being used for a first random access procedure;
the first transmitter, transmitting a first signal according to the first DCI, the first signal including a random access preamble;
the first receiver, monitoring a second DCI as a response to the first signal being transmitted; and
the first receiver, starting or restarting the first timer as a response to the second DCI being received, or starting or restarting the first timer as a response to the second signaling being received;
wherein the first reference signal resource is associated with the first index; the first DCI is a physical layer signaling; the first signal and the second DCI belong to the first random access procedure; the second DCI is a physical layer signaling; the second DCI is used to indicate a first amount of timing adjustment; or, the second signaling is used to indicate the first amount of timing adjustment.
13 . The first node according to claim 1 , characterized in that the first signaling comprises a UCI, a field of the UCI indicating the first index;
or,
the first signaling comprises a MAC CE, a field of the MAC CE indicating the first index.
14 . The first node according to claim 1 , characterized in that any of the multiple candidate indexes indicates a TAG.
15 . A method in a first node for wireless communications, comprising:
receiving a first information block, the first information block being used to determine a first resource block; and
transmitting a first signaling in the first resource block, the first signaling being used to indicate a first index;
wherein the first index is one of multiple candidate indexes, and any of the multiple candidate indexes is a non-negative integer; any of the multiple candidate indexes corresponds to at least one reference signal resource, and an uplink transmission being associated with a reference signal resource corresponding to the first index is non-synchronised.
16 . A second node for wireless communications, comprising:
a second transmitter, transmitting a first information block, the first information block being used to determine a first resource block; and
a second receiver, receiving a first signaling in the first resource block, the first signaling being used to indicate a first index;
wherein the first index is one of multiple candidate indexes, and any of the multiple candidate indexes is a non-negative integer; any of the multiple candidate indexes corresponds to at least one reference signal resource, and an uplink transmission being associated with a reference signal resource corresponding to the first index is non-synchronised.
17 . The second node according to claim 16 , characterized in comprising:
the second transmitter, transmitting a first timing advance command;
wherein as a response to the first timing advance command being received by a transmitter of the first signaling, the transmitter of the first signaling canceled the first out-of-sync report; the first timing advance command is used to indicate an amount of timing advance being associated with the reference signal resource corresponding to the first index.
18 . The second node according to claim 16 , characterized in comprising:
the second transmitter, transmitting a first DCI, the first DCI being used to indicate a first reference signal resource, the first reference signal resource being used for a first random access procedure;
wherein the first reference signal resource is associated with the first index; the first DCI is a physical layer signaling.
19 . The second node according to claim 16 , characterized in comprising:
the second receiver, receiving a first signal, the first signal including a random access preamble; and
the second transmitter, transmitting a second DCI as a response to the first signal being received;
wherein the first signal is transmitted according to the first DCI; the first signal and the second DCI belong to the first random access procedure; the second DCI is a physical layer signaling.
20 . The second node according to claim 16 , characterized in that the first signaling comprises a UCI, a field of the UCI indicating the first index;
or,
the first signaling comprises a MAC CE, a field of the MAC CE indicating the first index.