COMMUNICATION CONTROL METHOD, USER TERMINAL, NETWORK DEVICE, AND BASE STATION

• US 20160057643A1
• Filed: 03/24/2014
• Published: 02/25/2016
• Est. Priority Date: 03/25/2013
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: FUKUTA, Noriyoshi, FUJISHIRO, Masato
• Granted Patent: US 9,686,708 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 16/18 Network planning tools
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports

Abstract

A communication control method according to the present invention comprises: a step A of notifying, by UE 100 in a connected state, a MME/S-GW300 of RAT information on an MDT support RAT that is a radio access technology (RAT) on which the user terminal supports an MDT measurement; and a step B of setting to the UE 100, by network device, a PLMN (public land mobile network) list indicating a public land mobile network that permits MDT measurement, on the basis of RAT information.

Claims

1. A communication control method, comprising:

a step A of notifying, by a user terminal, when the user terminal is in a connected state, a network device of RAT information on a radio access technology (RAT) on which the user terminal supports an MDT measurement; and

a step B of setting to the user terminal, by the network device, a PLMN (public land mobile network) list indicating a public land mobile network that permits the MDT measurement, on the basis of the RAT information.

2. The communication control method according to claim 1, further comprising:

a step C of performing, by the user terminal, when the user terminal is in an idle state, the MDT measurement in a PLMN included in the PLMN list set on the basis of the RAT information.

3. The communication control method according to claim 1, wherein

the user terminal notifies the network device of the RAT information, in response to reception of a notification request for the RAT information from the network device.

4. The communication control method according to claim 1, wherein

the PLMN list includes only a PLMN belonging to the RAT.

5. The communication control method according to claim 2, wherein

when the PLMN list includes a first PLMN belonging to the RAT and a second PLMN not belonging to the RAT, the user terminal prohibits performing the MDT measurement in the second PLMN and performs the MDT measurement in the first PLMN.

6. The communication control method according to claim 2, further comprising:

a step D of transmitting to a base station, by the user terminal that holds a measurement result by the MDT measurement, notification information indicating that the user terminal holds the measurement result and identification information indicating an RAT corresponding to the measurement result.

7. The communication control method according to claim 2, further comprising:

a step E of transmitting to the base station, by the user terminal that holds a first measurement result by the MDT measurement, information indicating that the user terminal does not hold a second measurement result, when the user terminal receives from the base station, a transmission request of the second measurement result, wherein

the second measurement result is a measurement result for an RAT other than an RAT corresponding to the first measurement result.

8. The communication control method according to claim 2, further comprising:

a step F of transmitting, by the user terminal that holds a first measurement result by the MDT measurement, the first measurement result to the base station, when the user terminal receives transmission request of a measurement result from the base station; and

a step G of transmitting to the user terminal, by the base station, control information indicating whether or not to permit deletion of a measurement result on each of a plurality of RATs, when the first measurement result includes measurement results corresponding to the plurality of RATs.

9. A user terminal that performs an MDT measurement in a public land mobile network (PLMN) included in a PLMN list, when the PLMN list indicating the PLMN that permits the MDT measurement is set by a network device, comprising:

a controller configured to notify, in a connected state, the network device of RAT information on a radio access technology (RAT) on which the user terminal supports an MDT measurement, wherein

the controller notifies the network device of the RAT information, before the PLMN list is set by the network device.

10. A network device that sets to a user terminal, a PLMN list indicating a public land mobile network (PLMN) that permits an MDT measurement, comprising:

a controller configured to set the PLMN list to the user terminal, on the basis of RAT information on a radio access technology (RAT) on which the user terminal supports an MDT measurement.

11. A base station that receives a measurement result from a user terminal that holds the measurement result by the MDT measurement, comprising:

a controller configured to transmit to the user terminal, control information indicating whether or not to permit deletion of the measurement result on each of a plurality of RATs, when the measurement result includes measurement results corresponding to the plurality of RATs.