Mobile communication method, radio access network apparatus and mobile station
AssigneeNtt Docomo, Inc.
InventorsKatsutoshi Nishida, Shimpei Kawakatsu, Kenichi Katayama, Kenichiro Aoyagi
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Abstract
A mobile communication method according to the present invention includes the steps of: transmitting an “Extended Service Request” from a mobile station UE in Idle mode to a mobility management node MME via a radio base station eNodeB; transmitting an “Initial UE Context Setup Request” from the mobile station UE to the radio base station eNodeB, the “Initial UE Context Setup Request containing priority call information; and preferentially allocating resources to the E-RAB for the mobile station UE by the radio base station eNodeB based on the priority call information contained in the received “Initial UE Context Setup Request.”
Claims4
A mobile communication method comprising the steps of:
- transmitting a start request signal for circuit-switched type of communications from a mobile station to a mobility management node via a radio access network apparatus of a first communication system that does not support circuit-switched type of communications;
- transmitting a radio bearer setup request signal from the mobility management node to the radio access network apparatus of the first communication system, the radio bearer setup request signal containing priority call information and requesting setup of a radio bearer of the first communication system between the mobile station and the radio access network apparatus of the first communication system when the mobility management node receives the start request signal and determines that a circuit-switched fallback procedure is to be prioritized;
- notifying, by the radio access network apparatus of the first communication system, a radio access network apparatus of a second communication system of the priority call information via the mobility management node and a packet switch of the second communication system, the second communication system supporting circuit-switched type of communications;
- and
- preferentially allocating resources to a radio bearer of the second communication system between the mobile station and the radio access network apparatus of the second communication system, by the radio access network apparatus of the second communication system based on the notified priority call information.
A radio access network apparatus of a first communication system that does not support circuit-switched type of communications, wherein
- the radio access network apparatus is configured to send a mobility management node a start request signal for circuit-switched type of communications received from a mobile station, and
- when receiving a radio bearer setup request signal from the mobility management node which received the start request signal and determined that a circuit-switched fallback procedure is to be prioritized, the radio bearer setup request signal containing priority call information and requesting setup of a radio bearer of the first communication system between the mobile station and the radio access network apparatus of the first communication system, the radio access network apparatus notifies a radio access network apparatus of a second communication system of the priority call information via the mobility management node and a packet switch of the second communication system, the second communication system supporting circuit-switched type of communications.
A mobility management node, wherein
- the mobility management node is configured to receive a start request signal for circuit-switched type of communications from a mobile station via a radio access network apparatus of a first communication system that does not support circuit-switched type of communications, and
- the mobility management node determines whether or not to send the radio access network apparatus of the first communication system a radio bearer setup request signal containing priority call information and requesting setup of a radio bearer of the first communication system between the mobile station and the radio access network apparatus of the first communication system when the mobility management node receives the start request signal and determines that a circuit-switched fallback procedure is to be prioritized.
Dependencies are inferred from the claim text.