US 9,288,701 B2Granted

Mobile radio apparatus and mobile communication system

AssigneeFujitsu Limited

InventorKosuke Tomiyasu

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Abstract

A mobile radio apparatus receives a broadcast signal transmitted from at least one base-transceiver station corresponding to a cell around a position of the mobile radio apparatus, obtains from the received broadcast signal a cell identifier for the cell and a cell flag for identifying whether or not the cell is a small cell or a macro cell, stores the obtained cell identifier and cell flag in a cell list, confirms a service quality class for a service of call connection target communication, determines whether or not the service desires a high throughput by using the confirmed service quality class when the cell list includes a cell flag representing a small cell, selects a macro cell from the cell list when it is determined that the service does not desire a high throughput, and transmits a call connection request signal to a base-transceiver station corresponding to the selected macro cell.

Claims12

Dependent claims

A mobile radio apparatus comprising:

a measurement unit configured to receive a broadcast signal transmitted from at least one base-transceiver station corresponding to a cell around a position of the mobile radio apparatus, to obtain a cell identifier, contained in the received broadcast signal, for identifying the cell around the position of the mobile radio apparatus, and a cell flag, contained in the received broadcast signal, for identifying whether or not the cell around the position of the mobile radio apparatus is a small cell or a macro cell, and to store the obtained cell identifier and cell flag in a cell list;
a service confirmation unit configured to confirm a service quality class for a service of call connection target communication;
and
a control unit configured to determine whether or not the service of the call connection target communication is a service that desires a high throughput by using the service quality class confirmed by the service confirmation unit when the cell list includes a cell flag representing a small cell, to select a macro cell from the cell list when it is determined that the service of the call connection target communication is a service that does not desire a high throughput, and to transmit a call connection request signal to a base-transceiver station corresponding to the selected macro cell.

1 more element

A mobile communication system comprising:

a base-transceiver station configured to transmit a broadcast signal containing a cell identifier for identifying a cell corresponding to the base-transceiver station and a cell flag for identifying whether or not the cell is a small cell or a macro cell;
and
a mobile radio apparatus configured to receive the broadcast signal transmitted from at least one base-transceiver station corresponding to a cell around a position of a mobile radio apparatus, to obtain a cell identifier and a cell flag contained in the received broadcast signal, to store the obtained cell identifier and cell flag in a cell list, to confirm a service quality class for a service of call connection target communication, to determine whether or not the service of the call connection target communication is a service that desires a high throughput by using the confirmed service quality class when the cell list includes a cell flag representing a small cell, to select a macro cell from the cell list when it is determined that the service of the call connection target communication is a service that does not desire a high throughput, and to transmit a call connection request signal to a base-transceiver station corresponding to the selected macro cell.

A non-transitory computer-readable recording medium having stored therein a cell-selection control program for causing a computer to execute a process to control a mobile radio apparatus, the process comprising:

controlling a measurement unit included in the mobile radio apparatus to receive a broadcast signal transmitted from at least one base-transceiver station corresponding to a cell around a position of the mobile radio apparatus;
controlling the measurement unit to obtain a cell identifier, contained in the received broadcast signal, for identifying the cell around the position of the mobile radio apparatus, and a cell flag, contained in the broadcast signal, for identifying whether or not the cell around the position of the mobile radio apparatus is a small cell or a macro cell;
controlling the measurement unit to store the obtained cell identifier and the cell flag in a cell list;
controlling a service confirmation unit included in the mobile radio apparatus to confirm a service quality class for a service of call connection target communication;
controlling a control unit included in the mobile radio apparatus to determine whether or not the service of the call connection target communication is a service that desires a high throughput by using the service quality class confirmed by the service confirmation unit when the cell list includes a cell flag representing a small cell;
controlling the control unit to select a macro cell from the cell list when it is determined that the service of the call connection target communication is a service that does not desire a high throughput;
and
controlling the control unit to transmit a call connection request signal to a base-transceiver station corresponding to the selected macro cell.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/570,227Filed 15 Dec 2014
Priority: JP 2014-0190894 Feb 2014
Published: US 2015/0223123 A16 Aug 2015
Granted: 15 Mar 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04W 24/08
Supervisory, monitoring or testing arrangements: testing, supervising or monitoring using real traffic
H04W 36/0061
Transmission or use of information for re-establishing the radio link: of neighbour cell information
H04W 36/26
Reselection being triggered by specific parameters: by agreed or negotiated communication parameters
H04W 84/045
Public Land Mobile systems, e.g. cellular systems: using private Base Stations, e.g. femto Base Stations, home Node B