摘要:
A mobile communication system includes a first and second systems. Each of the first and second systems has a land station and at least one mobile terminal capable of communicating with the land station. The land station of the first system has a broadcasting channel transmission unit for transmitting status information via a broadcasting channel, and the mobile terminal of the second system has a broadcasting channel receiving unit for receiving information in the broadcasting channel to obtain a broadcasting channel receiving condition and the status information, a giving interference estimation unit for estimating giving interference level onto communication of the first system by the second system based upon the obtained broadcasting channel receiving condition and the obtained status information, and an output signal level control unit for controlling output signal level of the mobile terminal of the second system based upon the estimated giving interference level.
摘要:
A mobile communication system includes a plurality of antennas for sending and receiving beams, a plurality of mobile terminals moving in a fixed direction substantially, and a zone-shift control unit for treating the moving mobile terminals locating within a predetermined area as a single moving zone and for controlling the antennas and directions of the beams so that the beams always cover the moving zone.
摘要:
A calling location and a receiving location are analyzed by called party number analysis means by processing a called party number for specifying a communication terminal at the receiving side transmitted by a communication terminal at the calling side is processed, a charging unit price is determined by charging unit price determination means by referring to contents of a table memory storing a table of charging unit price using the calling location and the receiving location as parameters, and the information of charging unit price is informed to a communication terminal through a charging unit price determination/information apparatus, whereby a communication fee according to the receiving destination can be informed to the caller, or the receiver.
摘要:
In order to prevent decrease of channel efficiency and to effectuate high quality communication while moderating increase of apparatus scale of an interference canceler part and cutting down costs, in a mobile communication and radio base station apparatus according to the present invention, an interference cancel processing part within the base station apparatus is provided with reverse spread processing/respread processing parts for performing reverse spread processing and respread processing on received signals, synthesizing processing parts for synthesizing signals that have been subjected to the respread processing, and subtraction processing parts for subtracting the synthesized signal from received signal, in multiple stages. The interference cancel processing part processes received signals of users #1-#k. As a demodulation processing part, there is provided n demodulation processing parts that perform demodulation processing for received signals of users #1-#n, the number of those users being larger than the number of the users that can be processed in the interference cancel processing part. Those demodulation processing parts perform demodulation processing with respect to signals that have been subjected to the interference cancel processing.
摘要:
A mobile communication system is disclosed which precludes the necessity for mobile station to perform processing for microcell zone switching even when it moves from one microcell zone to another and which permits high-speed microcell zone handover. The service area of mobile communication is split into a plurality of macrocells; the macrocells are each subdivided into a plurality of microcells; a microcell base station equipped with a transmitting and receiving antenna and a power amplifier is installed in each microcell; a different communication channel is assigned to individual mobile station in the macrocell; even when the mobile station moves from one microcell to another, no channel handover takes place; and only when the mobile station moves from one macrocell to another, a mobile network control center which supervises the macrocell base stations effects channel handover.
摘要:
A fluorine-containing multifunctional ester compound represented by the formula ##STR1## wherein A is halogen atom, NO.sub.2 or N.sub.3, B is halogen atom or SR.sup.2, R.sup.1 is lower aliphatic group, aromatic group or aralkyl, R.sup.2 is lower aliphatic group or aromatic group.
摘要:
A liquid droplet ejecting apparatus having: a liquid droplet ejecting head; and a drive pulse generating unit, wherein the head includes: a nozzle; a pressure chamber which communicates with the nozzle; and a pressure applying section which changes a pressure in the pressure chamber, wherein the generated drive pulse is applied to the pressure applying section so as to change the pressure in the pressure chamber to cause the liquid in the pressure chamber to be ejected from the nozzle, and wherein the drive pulse includes a rectangular expansion pulse which causes expansion and then contraction of the volume of the pressure chamber and in which the pulse width PW of the expanding pulse is set so as to satisfy the following conditional equation, PW = π - ( tan - 1 1 2 π f τ ) 2 π f ( 1 ) where f represents an acoustic resonance frequency of a pressure wave in the pressure chamber and τ represents a damping time constant of the pressure wave.
摘要翻译:一种液滴喷射装置,具有:液滴喷射头; 以及驱动脉冲发生单元,其中所述头包括:喷嘴; 与喷嘴连通的压力室; 以及改变压力室中的压力的压力施加部分,其中所产生的驱动脉冲被施加到压力施加部分,以便改变压力室中的压力,以使得压力室中的液体从喷嘴喷射 并且其中驱动脉冲包括矩形膨胀脉冲,该矩形膨胀脉冲使得压力室的体积膨胀然后收缩,并且其中扩张脉冲的脉冲宽度PW被设置为满足以下条件方程:PW =&pgr; - (tan - 1 1 2&pgr;f f p t)2&pgr; (f)其中,f表示压力室内的压力波的声共振频率,τ表示压力波的阻尼时间常数。
摘要:
To a machining shape database, machining shapes are registered. A machining shape recognition function makes a comparison between CAD data from a CAD and the registered machining shapes, and extracts a matching registered machining shape. A machining method database stores information required to identify the machining method of a machining shape corresponding to the registered machining shape. Information about the machining method of the machining shape extracted by the machining shape recognition function is extracted by a machining step determination function from the machining method database, and machining methods are arranged in suitable order, whereby a machining step is generated.
摘要:
An imaging apparatus (20) measures shake of the apparatus by a gyro sensor (9), performs “a center stop control” until receiving an instruction for start of recording the still picture, and performs “a lens correction control” after the start of exposure in the imaging apparatus. The center stop control controls the correction lens position so as to stop a correction lens at an optical axis center position which is a position of the correction lens at which an optical axis of the imaging lenses (1) coincides with an optical axis of a correction lens (2). The lens correction control controls the correction lens position so as to correct blurring of the image formed on an imaging element (3) on the basis of the measuring result. The imaging apparatus (20) returns the correction lens (2) to the optical axis center position before receiving a next instruction for start of next recording after completion of the exposure to the imaging element, and then performs the center stop control on the correction lens (2).
摘要:
A wireless packet communication system and a base station using an algorithm modified from an existing Proportional Fairness algorithm enables a control according to flexible adjustment of a throughput difference between mobile units and a priority between mobile units.A function for controlling a difference in throughput and a function for controlling a difference in throughput by the class by classifying a mobile unit are added to the conventional Proportional Fairness algorithm, thereby enabling flexible operation which is suitable for actual operation.