Ntt Docomo, Inc.

Ntt Mobile Communications Network, Inc.

Mutsumaru Miki

Katsuhiko Yamagata

Yasuyuki Watanabe

Motoshi Tamura

Takaaki Sato

Junichiro Hagiwara

Kazufumi Yunoki

Yoshiyuki Yasuda

Masafumi Hata

Takuya Hamajima

Daisuke Igarashi

Akihiro Uchikoshi

Kenya Kusunose

Akiko Okamoto

Nobutaka Ishikawa

Nobuhide Uchiyama

Kazuyuki Kozu

Akira Kaiyama

Takeshi Sugiyama

Naomasa Yoshida

Yosuke Hayashi

Akiko Nakashima

Yasuyuki Oikawa

Akiko Green Gables C-101 12-14 Okamoto

Nobutaka 202 Bell Light Nokendai Ishikawa

When a network pages the temporary user mobile identifier of a mobile station, the mobile station sends a response to the network. Next, the network checks the authenticity of the user using a ciphering key, corresponding to the temporary user mobile identifier and a random number. If the temporary user mobile identifier is authenticated, a normal incoming call acceptance procedure is executed. If the mobile station is authenticated although the temporary user mobile identifier is wrong, the network reassigns a new temporary user mobile identifier to the mobile station and stops the current communication. In communication, the network and the mobile station mutually notify encipherment-onset time and negotiate about encipherment manner with each other. In addition, diversity handover is commenced upon a call attempt. Furthermore, if a branch replacement is necessary, the current branch is replaced by new branches capable of executing the diversity handover. Additionally, when a new call occurs to or from the mobile station capable of treating a plurality of calls simultaneously, the mobile station uses the same branch structure and the same communication frequency band for all of calls. Additionally, when a new call occurs to or from the mobile station capable of treating a plurality of calls simultaneously, a branch structure and a communication frequency band, which can continue all of the calls, are selected and used. Therefore, the mobile communications system is suitable for transmission of various sorts of data in accordance with the development of multimedia.

Method and system for mobile communications

When a new call occurs to or from the mobile station capable of treating a plurality of calls simultaneously, the mobile station uses the same branch structure and the same communication frequency band for all of calls. Additionally, when a new call occurs to or from the mobile station capable of treating a plurality of calls simultaneously, a branch structure and a communication frequency band, which can continue all of the calls, are selected and used.

Time required before PoC communication starts, in the case where a communication channel on the destination side has not been established, is shortened, and convenience of users is enhanced. A request for establishing a communication channel used for PoC communication is sent from a terminal TA. Immediately after receiving this request, call processing for establishing a communication channel to a terminal TC other than the terminal TA is started. In parallel with this call processing, processing after sending a response to the request is performed. Thereby, response to a communication channel connection request, SIP Registration processing and Invitation processing on the originating side and the processing on the destination side are performed in parallel, so that connection time can be shortened, and PoC communication can be started early.

Communication control server, communication terminal and communication control method

When a network pages the temporary user mobile identifier of a mobile station, the mobile station sends a response to the network. Next, the network checks the authenticity of the user using a ciphering key, corresponding to the temporary user mobile identifier and a random number. If the temporary user mobile identifier is authenticated, a normal incoming call acceptance procedure is executed. If the mobile station is authenticated although the temporary user mobile identifier is wrong, the network reassigns a new temporary user mobile identifier to the mobile station and stops the current communication. In communication, the network and the mobile station mutually notify encipherment-onset time and negotiate about encipherment manner with each other. In addition, diversity handover is commenced upon a call attempt. Furthermore, if a branch replacement is necessary, the current branch is replaced by new branches capable of executing the diversity handover. Additionally, when a new call occurs to or from the mobile station capable of treating a plurality of calls simultaneously, the mobile station uses the dental same branch structure and the same communication frequency band for all of calls. Additionally, when a new call occurs to or from the mobile station capable of treating a plurality of calls simultaneously, a branch structure and a communication frequency band, which can continue all of the calls, are selected and used. Therefore, the mobile communications system is suitable for transmission of various sorts of data in accordance with the development of multimedia.

An SCP is provided with a pattern notifying unit. The pattern notifying unit is configured so that, on the occasion of providing a service utilizing ISUP interwork between a first leg defined between an originating switching center and a forwarding MSC and a second leg defined between forwarding MSC and a receiving MSC, it notifies the forwarding MSC of an interwork pattern number corresponding to a category of the service. The forwarding MSC according to the present invention performs processes such as 'abandon and then generate' and 'transmit' to parameters with reference to an interwork pattern corresponding to the interwork pattern number provided.

Service control apparatus, forwarding switching equipment, service control system, and service control method

Growing community of inventors

Yokosuka, Japan

Mutsumaru Miki