Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2001-06-26
2004-12-28
Gelin, Jean (Department: 2682)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S452100, C455S452200
Reexamination Certificate
active
06836665
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a mobile unit communication system and a mobile unit communication method. More particularly, the present invention relates to a mobile unit communication system and a mobile unit communication method that can increase the efficiency of an assignment of a channel of a communication in which a data having a large data amount is transmitted at a high speed.
2. Description of the Related Art
A system referred to as IMT-2000, which has a high speed and a large capacity, is considered as a next generation of a mobile unit communication system. It is also the case that its data speed is up to 2 Mbps, and a dynamic picture can be transmitted. Such a next generation system is a high speed system, which can not be compared with the conventional mobile system. However, if all mobile terminals reserve the maximum data speed, a channel between air blocks is immediately used at a full condition. So, another user can not use the system. Thus, it is desirable that the data transmission can be effectively carried out at a high speed without any obstacle to the usage of another user.
Japanese Patent Publication No.2650536 discloses the following communication apparatus. This communication apparatus is provided with: a communication data transmitter/receiver using a directional antenna; a searcher for controlling the directional antenna so as to search for any another communicable mobile unit; a data receiver having a non-directional antenna for receiving a communication data from a transmission partner; a self-position detector for detecting a position of a mobile unit on a ground; a communication region calculator for calculating a communication region from the reception data and the map data of the communication data transmitter/receiver and the data receiver, and the self-position data of the output from the self-position detector; a communication route selection calculator for determining the optimal communication route from the communication region; and a display for displaying the communication region and the communication route.
Japanese Laid Open Patent Application (JP-A-Heisei, 11-262049) discloses the following communication system using a mobile unit. This communication system using a mobile unit is provided with: laser communicators for carrying out laser communications, which are installed correspondingly to a plurality of dispersed mobile units; and a plurality of radio communication apparatuses each having a radio communicator for carrying out a radio communication using a frequency lower than that of this laser communication. Each of the plurality of communication apparatuses is provided with: a partner information obtainer, which is connected between the plurality of radio communication apparatuses through a carrier wave via the radio communication, and obtains a partner information including a position speed information of the plurality of mobile units serving as communication partners, and then reports a self-information including a position speed information of a self-apparatus to a radio communication apparatus of a communication partner; and a data transmitter, which is connected between the plurality of radio communication apparatuses through the carrier wave via the laser communication, on the basis of the partner information obtained by this partner information obtainer, and then transmits a data generated by a radio communication apparatus on one side through the carrier wave via the laser communication to a radio communication apparatus on the other side.
Japanese Laid Open Patent Application (JP-A-Heisei, 11-275654) discloses the following data communication terminal connection method. The data communication terminal connection method is provided with: a terminal for inputting/outputting a data; a plurality of mobile stations; a controller for controlling a transmission of a generation signal from the terminal to the plurality of mobile stations; and a partner terminal for performing a data link on the plurality of mobile stations. The controller carries out a line connection between the terminal and the partner terminal, on the basis of a bulk connection information.
Japanese Laid Open Patent Application (JP-A-Heisei, 9-130324) discloses the following digital radio communication apparatus.
This digital radio communication apparatus provides a radio communication method of establishing a radio line connection between a radio base station and a plurality of mobile terminals, and in a radio access method of simultaneously assigning a plurality of radio circuits between a radio data terminal and the radio base station on the basis of a data transmission speed of the mobile terminal, and carrying out an access of a data transmission speed equal to plural times the data transmission speed of the radio line,
it has a multiplex separation circuit, which in a radio base station constituted by a radio base station (CS) placed in a micro cell and a mobile station (PS) within a micro cell where the radio base station can carry out a communication, performs a serial parallel conversion on a downward transmission data signal transmitted from a network to the mobile station, separates into a plurality of transmission data speeds, transmits to radio lines of a plurality of lines, performs a parallel serial conversion on a plurality of upward transmission data signals that are separated and transmitted by the mobile station, and then performs an interface on a signal speed of a network,
and on a transmission side, it is composed of: a bit addition circuit for adding a channel identifier (CI) to each transmission data signal of the outputs from the multiplex separation circuits in a plurality of systems on which the serial parallel conversion is performed; a bit inversion circuit for inverting the predetermined bits determined by the radio line among the plurality of channel identifier (CI) bits so that they are different in a plurality of radio line transmission data signals; an error correction encoder for encoding the transmission data signal and the channel identifier (CI) bit as an information bit; a bit inversion circuit for inverting the inverted channel identifier (CI) bit and returning back to the original state; a TDMA circuit for carrying out the multiplex separation in time division as a radio modification signal; a transmission/reception circuit for modulating/demodulating the transmission data signal, converting into a radio signal and transmitting it; and an antenna,
and on a reception side, it is composed of: an antenna and a transmission/reception circuit for carrying out the reception from the plurality of radio lines; a bit inversion circuit for inverting any bit among the channel identifier (CI) bits of the reception data signals in the plurality of radio lines; a switcher for selecting and outputting a data signal with regard to a presence or absence of a bit inversion; a CRC error correction decoder; a bit separation circuit for separating the channel identifier (CI) bits; a switching circuit for switching and outputting the input data signals in a plurality of systems; a multiplex separation circuit for sequentially selecting a plurality of data signals and performing the parallel serial conversion on a data speed of a terminal; and a control circuit for controlling the selection in the switching circuit on the basis of a presence or absence of a CRC error correction pulse. It repeats the trial of a bit inversion for all combinations of bit inversion positions at which the channel identifier (CI) bits of the reception data in the plurality of lines are inverted on the transmission side. Then, it determines the rank in the plurality of outputs from the transmission side multiple separation circuit, on the basis of the combination in which there is no error detection pulse in the error correction decoder, then rearranges the signals after the bit separation into the order after the branch in the transmission side multiplex separation circuit. Then, the parallel serial convers
Foley & Lardner LLP
Gelin Jean
NEC Corporation
LandOfFree
MOBILE UNIT COMMUNICATION SYSTEM AND A MOBILE UNIT... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with MOBILE UNIT COMMUNICATION SYSTEM AND A MOBILE UNIT..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and MOBILE UNIT COMMUNICATION SYSTEM AND A MOBILE UNIT... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3295616