Method and device used in communication node for wireless communication
Present application provides a method and a device used in communication node for wireless communications. A communication node receives a first signaling, the first signaling being used to determine a first TA, determines an uplink transmission timing for a first resource group according to at least the first TA, and starts or restarts a first timer, where a running status of the first timer is used to determine whether uplinks associated with the first resource group are aligned; receives a second signaling, the second signaling being used to determine a second TA, determines an uplink transmission timing for a second resource group according to at least the first TA and the second TA; the first resource group and the second resource group are both associated with a first cell; the first resource group comprises at least one radio resource; the second resource group comprises at least one radio resource.
1 . A user equipment (UE), comprising:
a transceiver; and
a processor, wherein the transceiver and the processor are configured to:
receive a first timing signal,
determine, based on the first timing signal, a first Timing Advance (TA) value for a first resource group associated with a first cell,
receive a second timing signal comprising a first field indicative of the first cell, a second field indicative of a second resource group associated with the first cell, and a third field indicative of whether a second TA value associated with the second resource group is a positive adjustment value or a negative adjustment value,
determine, based on the second timing signal, the second TA value associated with the second resource group, wherein the first resource group is different from the second resource group,
in response to the first timing signal, determine, based on the first TA value, an uplink transmission timing for the first resource group,
in response to the first timing signal, start or restart a first timer,
in response to the second timing signal, determine, based on both the first TA value and the second TA value, an uplink transmission timing for the second resource group,
monitor whether the first timer is running or expired,
on a condition that the first timer is running, determine that one or more uplink transmissions associated with the first resource group are aligned,
on a condition that the first timer is expired, execute an action set associated with the first cell.
2 . The UE of claim 1 , wherein the transceiver and the processor are further configured to receive a third timing signal used to determine a target TA group (TAG) set, wherein the target TAG set comprises at least one TAG, and
wherein a first TAG is one TAG comprised in the target TAG set, and
wherein the first TAG comprises the first resource group, the first TAG comprises the second resource group, or, any TAG in the target TAG set does not comprise the second resource group.
3 . The UE of claim 1 , wherein executing the action set comprises at least one of:
flushing all HARQ buffers associated with the first cell,
notifying a higher layer of releasing all first-type resources associated with the first cell, or,
deleting all second-type resources associated with the first cell, wherein a first-type resource comprises at least one of a Physical Uplink Control Channel (PUCCH) or a Sounding Reference Signal (SRS), and wherein a second-type resource comprises at least one of a configured downlink assignment or a configured uplink grant or a Physical Uplink Shared Channel (PUSCH) resource of a semi-persistent Channel State Information (CSI) reporting.
4 . The UE of claim 3 , wherein a Hybrid Automatic Repeat Request (HARQ) buffer corresponds to a HARQ process, the HARQ process being associated with a resource group in the first cell.
5 . The UE of claim 4 , wherein a Downlink Control Information (DCI) explicitly indicates a resource group that the HARQ process is associated with, or, a DCI implicitly indicates a resource group that the HARQ process is associated with.
6 . The UE of claim 1 , wherein the transceiver and the processor are further configured to:
start or restart the first timer in response to the second timing signal.
7 . The UE of first node according to claim 1 ,
wherein the transceiver and the processor are further configured to transmit a first signal, wherein:
the first signal is a physical layer signal,
the first signal is used by a first sub-node associated with a base station for calculating the first TA value,
the first signal triggers the first timing signal, or,
the first signal triggers the second timing signal.
8 . The UE of claim 7 , wherein the transceiver and the processor are configured to transmit a second signal, wherein:
the second signal is a physical layer signal,
the second signal is used by a second sub-node associated with the base station for calculating the second TA value, or
the second signal triggers the second timing signal.
9 . The UE of claim 1 , wherein the first timing signal comprises a first Medium Access Control (MAC) field used to determine the first TA value and a second MAC field indicating an index of a TAG to which the first resource group belongs.
10 . The UE of claim 1 , wherein the second TA value is an adjustment value for a reference TA value associated with at least one of: the first resource group, or the second resource group.
11 . The UE of claim 1 , wherein the second timing signal comprises a given field used to determine the second TA value and a third MAC field indicating an index of a TAG to which the second resource group belongs.
12 . A base station comprising:
a transceiver; and
a processor, wherein the transceiver and the processor are configured to:
transmit a first timing signal, the first timing signal being used to determine a first Timing Advance (TA) value, and at least the first TA value being used to determine an uplink transmission timing for a first resource group, and
transmit a second timing signal, the second timing signal being used to determine a second TA value, and both the first TA value and the second TA value being used to determine an uplink transmission timing for a second resource group,
wherein as a response to the first timing signal being received, a first timer is started or restarted, and a running status of the first timer is used to determine whether one or more uplinks associated with the first resource group are aligned or to execute an action set associated with a first cell, and
wherein the first resource group and the second resource group are both associated with the first cell, and
wherein the first resource group is different from the second resource group.
13 . The base station of claim 12 , comprising:
a first sub-node configured to receive a first signal and transmit a first message; and
a second sub-node configured to receive the first message,
wherein the first signal triggers the first message; and
wherein the first sub-node and the second sub-node are associated with the base station.
14 . The base station of claim 13 , wherein the first message triggers the second timing signal.
15 . The base station of claim 13 ,
wherein the second sub-node is configured to transmit a second message, and
wherein the first sub-node is configured to receive the second message, and wherein:
the first message triggers the second message,
the second message indicates the second TA value, and
the second message triggers the second timing signal.
16 . The base station of claim 12 , comprising:
a second sub-node configured to receive a first signal, or, receive a second signal, and transmit a second message, wherein:
wherein the first signal triggers the second message,
the second signal triggers the second message,
the second message indicates the second TA value, or
the second message triggers the second timing signal.
17 . A method performed by a user equipment (UE), the method comprising:
receiving a first timing signal;
determining, based on the first timing signal, a first Timing Advance (TA) value for a first resource group associated with a first cell;
receiving a second timing signal comprising a first field indicative of the first cell, a second field indicative of a second resource group associated with the first cell, and a third field indicative of whether a second TA value associated with the second resource group is a positive adjustment value or a negative adjustment value;
determining, based on the second timing signal, a second TA value associated with the second resource group, wherein the first resource group is different from the second resource group;
in response to the first timing signal, determining, based on the first TA value, an uplink transmission timing for the first resource group;
in response to the first timing signal, starting or restarting a first timer;
in response to the second timing signal, determining, based on both the first TA value and the second TA value, an uplink transmission timing for the second resource group;
monitoring whether the first timer is running or expired;
on a condition that the first timer is running, determining that one or more uplink transmissions associated with the first resource group are aligned; and
on a condition that the first timer is expired, executing an action set associated with the first cell.