UPLINK BASED FORWARD MOBILITY
A wireless transmit/receive unit (WTRU) may communicate with a serving cell and monitor suitable non-serving cell(s) may be monitored. Uplink-based forward mobility may be performed. The WTRU may transmit control signaling that may indicate an ordered list of candidate target cell(s) using resources of the source cell. A resume procedure towards a non-serving cell may be initiated while in connected state with serving cell. Upon a successful resume in non-serving cell, the connection may be disconnected from the serving cell.
1 - 20 . (canceled)
21 . A wireless transmit/receive unit (WTRU), the WTRU comprising:
a memory; and
a processor, the processor configured to:
monitor one or more neighbor cells;
determine that an egress condition for a source cell and an ingress condition for a target cell have been satisfied, the target cell being a neighbor cell from the one or more neighbor cells;
send a resume request to the target cell when the egress condition and the ingress condition have been satisfied while maintaining a connection to the source cell;
suspend one or more of a beam failure recovery procedure associated with the source cell and a radio link failure procedure associated with source cell;
receive a resume response from the target cell; and
release the connection to the source cell.
22 . The WTRU of claim 21 , wherein the resume response indicates that a resume procedure with the target cell is successful.
23 . The WTRU of claim 22 , wherein the processor is configured to release the connection to the source cell based on the resume response indicating that the resume procedure with the target cell is successful.
24 . The WTRU of claim 21 , wherein the resume response indicates that a resume procedure associated with the target cell has failed.
25 . The WTRU of claim 21 , wherein the ingress condition is a condition for entering the target cell.
26 . The WTRU of claim 21 , wherein the target cell is a first target cell, the ingress condition is a first ingress condition, and the processor is further configured to determine that the egress condition for the source cell and a second ingress condition for a second target cell have been satisfied.
27 . The WTRU of claim 21 , wherein the egress condition is a condition for leaving the source cell.
28 . The WTRU of claim 21 , wherein the egress condition is based on one or more of a quality of the source cell, quality of the source cell, a status of a radio link monitoring process, and a channel occupancy of the source cell.
29 . The WTRU of claim 21 , wherein the ingress condition is based on one or more of an absence of a measurement reporting configuration, a mobility configuration, a radio access network (RAN) area configuration, a lack of response to a measurement report, an indication in a broadcast signal received from the neighbor cell, and a quality of a cell.
30 . A method being implemented in a wireless transmit/receive unit (WTRU) for performing an uplink-based forward mobility, the method comprising:
monitoring one or more neighbor cells;
determining that an egress condition for a source cell and an ingress condition for a target cell have been satisfied, the target cell being a neighbor cell from the one or more neighbor cells;
sending a resume request to the target cell when the egress condition and the ingress condition have been satisfied while maintaining a connection to the source cell;
suspending one or more of a beam failure recovery procedure associated with the source cell and a radio link failure procedure associated with the source cell;
receiving a resume response from the target cell; and
releasing the connection to the source cell.
31 . The method of claim 30 , wherein the ingress condition is a condition for entering the target cell.
32 . The method of claim 30 , wherein the target cell is a first target cell, the ingress condition is a first ingress condition, and the method further comprises determining that the egress condition for source call and a second ingress condition for a second target cell have been satisfied.
33 . The method of claim 30 , wherein the egress condition is a condition for leaving the source cell.
34 . The method of claim 30 , wherein the egress condition is based on one or more of a quality of the source cell, a status of a radio link monitoring process, and a channel occupancy of the source cell.
35 . The method of claim 30 , wherein the ingress condition is based on one or more of an absence of a measurement reporting configuration, a mobility configuration, a radio access network (RAN) area configuration, a lack of response to a measurement report, an indication in a broadcast signal received from the neighbor cell, and a quality of a cell.