Ntt Docomo, Inc.

Mitsubishi Paper Mills Limited

Masafumi Masuda

Takaaki Sato

Kenichiro Aoyagi

Yasuhiro Kawabe

Hiroyuki Hosono

Akihiro Maebara

Katsuhiko Yamagata

Masayuki Koshino

Mikio Iwamura

Yasuyuki Watanabe

Yuichiro Nakamura

Kazunori Obata

Mayu Yamada

Tomoichi Morita

Yutaka Ohto

Nobu Yasuda

Takayuki Tsuneda

Ryoji Yamamoto

Takehiro Nakamura

Yasuhiro Kato

Takahiro Hayashi

Akira Ishii

Takeshi Okamoto

Seizo Onoe

Hidehiro Ando

Yoshiyuki Yasuda

Tadashi Uchiyama

Hidetoshi Yazaki

Seigo Harano

Kota Fujimura

Takanori Utano

Takeshi Terayama

Hironari Kobayashi

Toshimasa Ogura

Makoto Shoji

Hiromu Niiyama

Takashi Nagano

Toyohiro Abe

Masahiko Ogai

Hiroko Hisata

A mobile communication method according to the present invention includes a step of a mobile station UE transmitting a connection setup request signal containing a radio access capability of the mobile station eNB to a radio network controller RNC of a UMTS scheme, upon detecting a predetermined trigger while camping on in a cell of the first communication scheme, a step of the radio network controller RNC of the UMTS scheme transmitting an instruction signal for instructing setup of a connection in a cell of an LTE scheme to the mobile station UE, in a case where the radio access capability of the mobile station UE is contained in the received connection setup request signal, and a step of the mobile station UE setting up the connection in the cell of the LTE scheme in response to the received instruction signal.

Mobile communication method, mobile station, and network device

A radio base station in a first mobile communication system is disclosed. The radio base station includes a radio communication unit; a network communication unit; and a determining unit. If a massage received by the network communication unit from a switching station indicates that a mobile station is requesting a service which is not provided in the first mobile communication system but which is provided in, a second mobile communication system and it is determined by the determining unit that a handover to the second mobile communication system cannot be conducted, the network communication unit requests the switching station to release a connection with the mobile station. Then the radio communication unit reports to the mobile station that the connection should be released in accordance with an instruction from the switching station.

Radio base station and method

In a mobile communication method according to the present invention, in a communication start procedure of a mobile station camps on a femtocell, acquiring, by an exchange, a frequency of the femtocell and a femtocell ID for uniquely identifying the femtocell which are held in a controller, storing, by the exchangeand a home location register, the acquired frequency of the femtocell and the acquired femtocell ID in association with subscriber information of the mobile station UE, performing, by the exchangeand the home location register, location registration to register the mobile station UE for a location registration area to which the femtocell geographically overlaid with the macrocell belongs, in response to the received location registration request signal, in a release procedure of the radio connection after completion of the location registration, notifying, by the controller, the mobile station UE of the notified frequency of the femtocell notified by the exchange

Mobile communication method, control device, and exchange

A mobile communication systemincludes a selection unitconfigured to select a transition target frequency from the plurality of frequencies when a condition under which a mobile communication terminal not utilize a transition source frequency being any of the plurality of frequencies is fulfilled, and an instruction unitconfigured to instruct the mobile communication terminal to perform a transition to the transition target frequency selected by the selection unit. The selection unitexcludes the transition source frequency from a frequency candidate to be utilized by the mobile communication terminal until an elapsed time after the instruction of the transition to the transition target frequency exceeds a predetermined time.

Mobile communication system, network apparatus, and mobile communication method

In a mobile communication system according to the present invention, the mobile communication system is configured to manage a specific mobile station which is allowed to communicate through a CSG cell under the control of a home base station (Home-eNB); and a general mobile station (UE) other than the specific mobile station is configured to be capable of using the CSG cell as a camped cell, only when broadcast information indicating an allowance of a camping in the specific cell is received.

Mobile communication system, home base station, and mobile station

A mobile communication method according to the present invention includes a step of a radio network controller of a first communication scheme transmitting an instruction signal to a mobile station UE in a case where a radio access capability of the mobile station UE is contained in the received connection setup request signal, the instruction signal instructing the mobile station UE to make an attempt to set up a connection in a cell of a second communication scheme, and a step of the mobile station UE setting up the connection in the cell of the second communication scheme in response to the received instruction signal, wherein in the mobile station UE transmits a connection setup request signal not containing the radio access capability of the mobile station UE, in a case where the mobile station UE detects the predetermined trigger but the attempt to setup the connection in the cell of the second communication scheme has been made a predetermined number of times or more within a predetermined period of time.

UEincludes a detection unitconfigured to detect a specific cell provided to the first communication system and a control unitconfigured to start measurement of the second cell or cell reselection from the first cell to the second cell in response to detection of the specific cell. The specific cell has a service area having the same range as a service area of the second cell.

Mobile communication terminal, mobile communication system, and mobile communication method

A mobile communication method according to the present invention includes step A of notifying, by a radio base station NodeB, a radio network controller RNCof location information of the radio base station NodeB (location code: bbb), step B of notifying, by the radio network controller RNC, an exchange station MSC/SGSN of the location information of the radio base station NodeB (location code: bbb) when a mobile station UE starts communication via the radio base station NodeB and the radio network controller RNC, and step C of controlling each session of the communication by the exchange station MSC/SGSN based on the location information of the radio base station NodeB (location code: bbb).

Mobile communication method, radio base station, radio network controller, and exchange station

A radio controllerof the present invention includes a threshold value holding unitconfigured to associate a traffic channel configuration with at least one threshold value and hold these associated traffic channel configuration and threshold value, a threshold value extraction unitconfigured to extract at least one threshold value associated with a traffic channel configuration of a mobile station and a threshold value determination unitconfigured to determine whether or not to change the traffic channel configuration of the mobile station by comparing the extracted threshold value with a communication state at a predetermined timing.

Radio controller and mobile communication method

A radio base station monitoring method includes (A) a first radio base station detecting a second radio base station having newly detected a common control channel and a second radio base station having stopped detecting the common control channel as second radio base stations with a change, (B) the first radio base station notifying a network device of information about the second radio base stations with a change, and (C) the network device using information about second radio base stations associated with the first radio base station and the information about the second radio base stations with a change, which has been notified, to stop the operation of at least one of the first radio base station or the second radio base stations.

Network device to monitor radio base station and a method thereof

Provided is a mobile communication method including: a step in which a first radio base station #a transmits broadcast information containing transmission availability information indicating whether a radio signal can be transmitted; and a step which determines whether the radio signal can be transmitted according to the transmission availability information contained in the broadcast information and access information managed in a mobile station #X. The mobile station #X can transmit the radio signal to the first radio base station #a when an access to the first radio base station #a is permitted in the access information even if transmission of the radio signal to the first radio base station #a is restricted by the transmission availability information.

Mobile communication system that selectively determines uplink transmission to a base station even when radio signal transmission to the base station is prohibited

Disclosed is a communication method for switching between a first connection state, in which a data unit is transmitted in a first size, and a second connection state, in which a data unit is transmitted in a second size which is larger than the first size. The communication method comprises a step of maintaining the size of a data unit at the first size in a case where there is a transition from the first connection state to the second connection state after there had been a transition from the second connection state to the first connection state.

Communication method, communication system, and control apparatus

A paging signal transmission method which transmits the paging signal to a position registration area of a mobile station in response to incoming to the mobile station. When a wireless base station managing a cell belonging to the position registration area of the mobile station does not permit access to the mobile station, the method does not transmits the paging signal to the cell.

Paging signal transmission method, radio base station, and network device

A mobile communication method according to the present invention includes a step A of offering a particular service through a second radio data link established between a mobile station and a cell in the second area in a state in which a first radio data link is not established between the mobile station and a cell in the first area and a step B of suspending the offer of the particular service through the second radio data link when the state in which the first radio data link is not established continues for a predetermined time period.

Growing community of inventors

Yokosuka, Japan

Masafumi Masuda