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US 9,426,701 B2Granted
Configuration of handovers in communication systems
AssigneeNokia Solutions and Networks Oy
InventorsLing Yu, Vinh Van Phan, Kari Veikko Horneman
Life of this patent
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Abstract
Apparatus and method for communication are provided. The solution includes obtaining information of handovers to be performed regarding more than one user equipment connected to the apparatus; requesting the user equipment to form one or more device-to-device clusters; and controlling handovers to be performed utilizing information on the formed device-to-device clusters.
Claims22
An apparatus, comprising:
- at least one processor;
- and
- at least one memory including computer program code,
- the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:
- obtain information on cell evacuation or massive handover to be performed regarding more than one user equipment connected to the apparatus;
- in response to the obtaining information, request the more than one user equipment to form one or more device-to-device clusters;
- and
- control the cell evacuation or massive handover to be performed utilising information on the formed one or more device-to-device clusters, wherein the control comprises determining whether a device-to-device cluster based handover process or a traditional handover process is to be performed.
5 more elements
An apparatus, comprising:
- at least one processor;
- and
- at least one memory including computer program code,
- the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:
- be in device-to-device communication with a set of user equipment forming a device-to-device cluster to be handed over in a cell evacuation or massive handover to a target cell of a communication system;
- access the target cell of the communication system by using a random access channel procedure and obtain uplink timing advance information while other user equipment forming the device-to-device cluster are under the cell evacuation or massive handover process;
- receive from at least one of the set of the user equipment forming the device-to-device cluster downlink synchronization status information;
- and
- transmit the downlink synchronization status information to the base station of the target cell in the cell evacuation or massive handover process.
6 more elements
A method, comprising:
- obtaining information on cell evacuation or massive handover to be performed regarding more than one user equipment connected to an apparatus;
- in response to the obtaining information, requesting the more than one user equipment to form one or more device-to-device clusters;
- and
- controlling the cell evacuation or massive handover to be performed utilising information on the formed one or more device-to-device clusters, wherein the control comprises determining whether a device-to-device cluster based handover process or a traditional handover process is to be performed.
1 more element
A method, comprising:
- being in device-to-device communication with a set of user equipment forming a device-to-device cluster to be handed over in a cell evacuation or massive handover to a target cell of a communication system;
- accessing the target cell of the communication system by using a random access channel procedure and obtain uplink timing advance information while other user equipment forming the device-to-device cluster are under the cell evacuation or massive handover process;
- receiving from at least one of the set of the user equipment forming the device-to-device cluster downlink synchronization status information;
- and
- transmitting the downlink synchronization status information to the base station of the target cell in the cell evacuation or massive handover process.
2 more elements
Dependencies are inferred from the claim text.