Communication control method, base station, and user terminal
AssigneeKYOCERA Corporation
InventorsMasato Fujishiro, Kugo Morita
Life of this patent
Estimating the term…
Abstract
A communication control method used in a mobile communication system in which a UE 100 is capable of simultaneously using a plurality of cells. The communication control method comprises the steps of; transmitting a PRACH securing request to request a securing of a PRACH resource, from a cell 1 having a connection with the UE 100 to a cell 2 having no connection with the UE 100; securing, by the cell 2 that receives the PRACH securing request, the PRACH resource; and transmitting a random access preamble by using the PRACH resource, from the UE 100 to the cell 2.
Claims13
A communication control method used in a mobile communication system in which a user terminal is capable of simultaneously using a plurality of cells, comprising the steps of:
- transmitting a PRACH securing request to request a securing of a PRACH resource, from a first cell having a connection with the user terminal to a second cell having no connection with the user terminal;
- securing, by the second cell that receives the PRACH securing request, the PRACH resource;
- and
- transmitting a random access preamble by using the PRACH resource, from the user terminal to the second cell.
A base station managing a first cell having a connection with the user terminal in a mobile communication system in which a user terminal is capable of simultaneously using a plurality of cells, the base station comprising:
- a transmitter configured to transmit a PRACH securing request to request a securing of a PRACH resource, to a second cell having no connection with the user terminal.
A base station managing a second cell having no connection with the user terminal in a mobile communication system in which a user terminal is capable of simultaneously using a plurality of cells, the base station comprising:
- a receiver configured to receive a PRACH securing request to request a securing of a PRACH resource, from a first cell having a connection with the user terminal;
- and
- a controller configured to secure the PRACH resource in the second cell, in response to reception of the PRACH securing request.
A user terminal having a connection with a first cell and having no connection with a second cell in a mobile communication system in which the user terminal is capable of simultaneously using a plurality of cells, the user terminal comprising:
- a transmitter configured to transmit, a random access preamble, to the second cell, by using a PRACH resource secured by the second cell in response to a PRACH securing request from the first cell.
Dependencies are inferred from the claim text.