Abstract
Apparatus and methods of handing over a wireless transmit/receive unit (WTRU) that belongs to a group of WTRUs from an originating base station to a target base station are described. A method includes the WTRU obtaining information regarding a group to which the WTRU has been assigned and the WTRU receiving at least one of handover reconfiguration information that is common to the group and handover reconfiguration information that is specific to the WTRU. On a condition that the WTRU receives the handover reconfiguration information that is specific to the WTRU, the WTRU initiates a synchronization procedure with the target base station based at least on the received handover reconfiguration information.
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Technologies
Product
Use Cases
Services
Claim
A first wireless transmit/receive unit (WTRU) comprising:
a transceiver; and
a processor; wherein
the transceiver and the processor are configured to:
receive, from a second WTRU, a first message comprising a group identifier associated with a first group;
based on the received group identifier associated with the first group, join the first group by monitoring for messages intended for the first group;
measure signal strength values for one or more neighbor cells;
send a measurement report, to a base station, in response to a measured signal strength value differing by more than a threshold amount from a representative measurement value for the first group; and
receive an indication that the first WTRU is no longer in the first group.
2. The first WTRU of claim 1, wherein:
the measurement report comprises the signal strength values for the one or more neighbor cells.
3. The first WTRU of claim 1, wherein:
the transceiver and the processor are further configured to send an indication that the first WTRU is not to remain in the first group.
4. The first WTRU of claim 1, wherein each of the measured signal strength values for the one or more neighbor cells is an individual measurement.
5. The first WTRU of claim 1, wherein each of the measured signal strength values for the one or more neighbor cells is an averaged or filtered measurement.
6. A method performed by a first wireless transmit/receive unit (WTRU) the method comprising:
receiving, from a second WTRU, a first message comprising a group identifier associated with a first group;
based on the received group identifier associated with the first group, joining the first group by monitoring for messages intended for the first group;
measuring signal strength values for one or more neighbor cells;
sending a measurement report, to a base station, in response to a measured signal strength value differing by more than a threshold amount from a representative measurement value for the first group; and
receiving an indication that the first WTRU is no longer in the first group.
7. The method of claim 6, wherein:
the measurement report comprises the signal strength values for one or more neighbor cells.
8. The method of claim 6, further comprising:
sending an indication that the first WTRU is not to remain in the first group.
9. The method of claim 6, wherein each of the measured signal strength values for the one or more neighbor cells is an individual measurement.
10. The method of claim 6, wherein each of the measured signal strength values for the one or more neighbor cells is an averaged or filtered measurement.
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.