Fujitsu Corporation

Yoshiyuki Ono

Naoji Fujino

Mitsuru Takahashi

Kaoru Chujo

Kazuya Kobayashi

Kimihide Ono

Norikatsu Tokairin

A communications system includes a base station; and a mobile communications terminal, where the base station and the mobile communications terminal execute a random access procedure, and perform radio communication. The base station is configured to assign to the mobile communications terminal, in the random access procedure, an identifier that corresponds to preamble information, the base station assigning the identifier based on first correspondence information that indicates a given correspondence relation of the preamble information to be transmitted by the mobile communications terminal and the identifier assigned to mobile communications terminal. The mobile communications terminal is configured to execute the random access procedure with the base station by transmitting to the base station, the preamble information that corresponds to the identifier assigned by the base station.

Communications system, communications method, mobile communications terminal, and base station

In a communication system including first and second base stations, an apparatus operates as the first base station. The apparatus determines a first reference timing that is used as a reference timing for transmitting a downlink signal, and adjusts the determined first reference timing to a second reference timing being used in the second base station. The apparatus corrects a deviation of the first reference timing from the second reference timing, which has occurred after adjustment of the first reference timing, in accordance with a receiving timing of a preamble signal transmitted from a mobile station device to the second base station.

Apparatus and method for adjusting a reference timing

Provided is a allocation controlling method of a radio resource for a radio resource allocation request in a base station which allocates, to a terminal, in response to the radio resource allocation request received from the terminal, a radio resource for transmitting retention data in a transmission buffer of the terminal to the base station, and which transmits to the terminal a radio resource allocation notification indicating a result of the allocation. When an amount of retention data in the transmission buffer received from the terminal is not zero, a transmission cycle that is suited to the retention amount is determined as a transmission cycle of the notification of radio resource allocation for transmitting the retention data in the transmission buffer and, during cyclic transmission of the radio resource allocation notification, the allocation of a radio resource for the radio resource allocation request is stopped.

Method of controlling allocation of a radio resource for transmitting a radio resource allocation request

A communication apparatus for processing a fax signal and an audio signal includes an audio compression unit for compressing the audio signal, a fax-termination/switching control unit for terminating the fax signal and for executing control to prevent the fax signal from being compressed by the audio compression unit, a detection unit for detecting a predetermined negotiation signal used in a negotiation procedure for a fax communication from an input signal before compression within a fixed period of time starting at the beginning of the negotiation signal and an exclusion processing unit for carrying out an exclusion process on the negotiation signal upon detection of the negotiation signal.

Communication apparatus and processing method of the same

A communication-status notification apparatus enabling a subscriber to observe various kinds of communication status in a network easily via the subscriber's own terminal in a communication system. The apparatus includes a request analysis section for discriminating whether or not voice data received by gateway equipment from a subscriber terminal contains a request on monitoring/controlling or notifying of a communication status in the network and for analyzing the content of the request when contains, a communication-status monitor/control section for monitoring/controlling the communication status responsive to the content of the request analyzed by the request analysis section based on a processing status of the voice data in the gateway equipment, and a communication-status notification section for notifying the subscriber terminal of the communication status monitored/controlled by the communication-status monitor/control section via the gateway equipment responsive to the content of the request analyzed by the request analysis section. The apparatus is useful when applied to VoIP gateway equipment or the like used for a VoIP communication system.

Communication-status notification apparatus for communication system, communication-status display apparatus, communication-status notification method, medium in which communication-status notification program is recorded and communication apparatus

Growing community of inventors

Kawasaki, Japan

Yoshiyuki Ono