公开(公告)号：JPH1093661A

公开(公告)日：1998-04-10

申请号：JP24532196

申请日：1996-09-17

Applicant: TOSHIBA CORP

Inventor： NAKAJIMA NOBUYASU ,  KAMAGATA EIJI ,  KATO NORIYASU ,  SERIZAWA MUTSUMI

IPC: H04L1/16 ,  H04L29/08

Abstract: PROBLEM TO BE SOLVED: To provide a retransmission control method which prevents the occurrence of unnecessary time-out before reception of a reception response to efficiently transmit data. SOLUTION: Between two stations 1 and 2 which transmit/receive data to/ from through a two-way communication channel, this method retransmits data if one station 1 doesn't receive a response from the other station 2 within a preliminarily determined response wait time after transmitting data. In this case, if one station receives one of at least two kinds of logical channels multiplexed in the communication channel above from the other station 2 within the response wait time measured by a timer 1d after transmitting data to the other station 2 by another logical channel, a retransmission control part 1b makes the response wait time above longer by a preliminarily determined time.

公开(公告)号：JPH09224051A

公开(公告)日：1997-08-26

申请号：JP2909096

申请日：1996-02-16

Applicant: TOSHIBA CORP

Inventor： NAKAJIMA NOBUYASU ,  SERIZAWA MUTSUMI ,  NOUJIN KATSUYA ,  KAMAGATA EIJI ,  TOSHIMITSU KIYOSHI ,  KATO NORIYASU

IPC: H04L1/16 ,  H04L12/70 ,  H04L12/707 ,  H04L12/725 ,  H04L12/775 ,  H04L29/06 ,  H04L12/56

Abstract: PROBLEM TO BE SOLVED: To improve transmission efficiency by packeting 1st response data preferentially rather than 2nd response data and user data corresponding to packets to be transmitted through an outgoing low-speed transmission system and transmitting these 1st response data through an incoming low-speed transmission system. SOLUTION: The data packet to be transmitted through an outgoing high- speed transmission system 3 is inputted from a 1st reception part 11 to a 1st data packet inspection part 12, the error is inspected, and the inspected result is dispatched to a data packet part 19 as the 1st response data. The data packet to be transmitted through a 2nd low-speed transmission system 4 is inspected at a 2nd data packet inspection part 15, and the 2nd response data are delivered to the data packet part 19. The data packet 19 receives two responses and the user data generated at a 2nd station, stores them, packets these data while selecting them and deliveres them to a transmission part 18. At such a time, the 1st response data are packeted and delivered to the transmission part 18.

公开(公告)号：JPH0951304A

公开(公告)日：1997-02-18

申请号：JP23584595

申请日：1995-09-13

Applicant: TOSHIBA CORP

Inventor： TOSHIMITSU KIYOSHI ,  SERIZAWA MUTSUMI

IPC: H04B7/26 ,  H04W16/30 ,  H04W28/00 ,  H04W52/02 ,  H04W88/14 ,  H04W92/00 ,  H04Q7/22 ,  H04Q7/24 ,  H04Q7/26 ,  H04Q7/30 ,  H04Q7/36

Abstract: PROBLEM TO BE SOLVED: To reduce power consumption at a radio terminal in a radio communication system having the incoming/outgoing radio channels of a narrow band and the outgoing radio channel of a wide band. SOLUTION: When information transmitted to the radio terminal 301 exists in the buffer of a wide band radio base station 302, a signal instructing the turning-on of power source in the wide band reception means of the radio terminal is transmitted to the radio terminal from a narrow band radio base station 303. Thus, the radio terminal 301 turns off the power source of the wide band reception means until information addressed to its own station is inputted to the buffer of the wide band radio base station 302.

公开(公告)号：JPH08331153A

公开(公告)日：1996-12-13

申请号：JP17679195

申请日：1995-06-20

Applicant: TOSHIBA CORP

Inventor： SERIZAWA MUTSUMI ,  OGURA KOJI ,  MUKAI MANABU ,  WAKUTSU TAKASHI ,  NAMEKATA MINORU ,  NAKAJIMA NOBUYASU ,  KAMAGATA EIJI ,  NOUJIN KATSUYA ,  TOSHIMITSU KIYOSHI

IPC: H04L12/801 ,  H04L12/28 ,  H04L12/903 ,  H04L12/911 ,  H04W28/06 ,  H04Q7/38

Abstract: PURPOSE: To transmit information via a down link line to a terminal at high speed by relatively increasing the transmission speed of the down link line as compared with an up link line and to improve frequency use efficiency. CONSTITUTION: A low speed transmission means 2 is provided on a terminal 1 and transmits a radio signal to a base station 5 at a relatively low transmission speed via an up link line 4. A low speed reception means 6 is provided on the base station 5 and receives the radio signal transmitted at the relatively low transmission speed from the terminal via the up link line 4. A high speed transmission means 7 is provided on the base station 5 and transmits the radio signal to the terminal 1 via a down link line 8, at a relatively high transmission speed. A high speed reception means 3 is provided on the terminal 1 and receives the radio signal transmitted from the base station 5 via the down link line 8 at a relatively high transmission speed.

公开(公告)号：JPH08274781A

公开(公告)日：1996-10-18

申请号：JP7396795

申请日：1995-03-30

Applicant: TOSHIBA CORP

Inventor： WAKUTSU TAKASHI ,  NOUJIN KATSUYA ,  KAMAGATA EIJI ,  OGURA KOJI ,  KUMAKI YOSHINARI ,  SERIZAWA MUTSUMI ,  NAKAJIMA NOBUYASU

IPC: H04L5/00 ,  H04B7/26 ,  H04L12/28

Abstract: PURPOSE: To securely receive information services by positioning a portable electronic device of simple constitution in an area where received electric field intensity is high. CONSTITUTION: This radio communication system has asymmetrical transmission speeds so that the down link transmission speed at which the base station sends signals to the portable electronic device 10 is faster than the up link transmission speed at which the portable electronic device 10 sends signals to a base station. The receivable area 21 wherein the signals sent from the antenna 20 of the base station have high received electric field intensity enough to receive information services by the electronic portable device 10 is made distinctive by colors of a floor surface, etc., and easily discriminated, so that a user can easily improve the received electric field intensity.

公开(公告)号：JPH08251146A

公开(公告)日：1996-09-27

申请号：JP5290295

申请日：1995-03-13

Applicant: TOSHIBA CORP

Inventor： NAKAJIMA NOBUYASU ,  SERIZAWA MUTSUMI ,  OGURA KOJI

IPC: H04L1/16 ,  H04L12/951 ,  H04L29/08 ,  H04L12/56

Abstract: PURPOSE: To increase throughput without impairing the performance of a high speed transmission line for data and a low-speed transmission line for control information between both transmission lines. CONSTITUTION: A first station 10 equivalent to a transmission station is provided with a means 23 forming a data packet being the unit of information to be transmitted, the receiving means 16 of a response packet from a second station 20 equivalent to a receiving station, a deciding means 17 deciding retransmission data packet when a response packet includes a retransmission request, a block forming means 12 gathering plural data packets including this retransmission data packet and a means 15 successively transmitting this packet at a high speed. Then, a reception station is provided with a data packet receiving means 21, a packet judging means 22 detecting an error included in data to judge a packet the error belongs to, a means 23 gathering this judging result by the unit of blocks and forming the response packet including a retransmission request to the packet in which an error is detected, and a means 24 transmitting the response packet at a low speed.

公开(公告)号：JPH08186861A

公开(公告)日：1996-07-16

申请号：JP32629694

申请日：1994-12-27

Applicant: TOSHIBA CORP

Inventor： MITSUKI ATSUSHI ,  KUMAKI YOSHINARI ,  SERIZAWA MUTSUMI

IPC: H04W72/08 ,  H04W16/10 ,  H04W16/30 ,  H04Q7/36

Abstract: PURPOSE: To prevent deterioration in speech quality in a cellular mobile communication system and forced interruption to the utmost by providing a stage measuring a reception electric field strength of a mobile station receiving a call to decide a channel and a stage allocating a decided channel when the measured value of desired wave versus interference wave power ratio has a prescribed margin or over. CONSTITUTION: When a call is made by mobile stations MS1, MS2, base stations BS1, BS2 measure reception electric field strength from the mobile stations MS1, MS2. Then a channel corresponding to the measured reception electric field strength is decided and the base stations BS1, BS2 measure a desired wave versus interference wave power ratio (CIR) of an up link of the channel and the mobile stations MS1, MS2 measure the CIR of a down-link, and when they have a prescribed margin or over, the decided channel is allocated. When they do not have the prescribed margin, whether or not other channel is to be allocated is checked.

公开(公告)号：JPH08172385A

公开(公告)日：1996-07-02

申请号：JP31722894

申请日：1994-12-20

Applicant: TOSHIBA CORP

Inventor： OGURA KOJI ,  SERIZAWA MUTSUMI ,  NAKAJIMA NOBUYASU

IPC: H04B7/08 ,  H04L1/02

Abstract: PURPOSE: To reduce the degradation of the transmission quality due to drop-out of a prescribed frequency component in the case of high-speed radio transmission of FSK in transmission line circumstances where multipath delay exists. CONSTITUTION: Diversity switching or synthesis is independently performed for each frequency component in the succeeding stage of band filters 11 to 14 which extract frequency components corresponding to an information signal in an FSK receiver. If multipath delay exists and a frequency component f1 is dropped out in a diversity antenna #1 and a frequency component f2 is dropped out in an antenna #2, the diversity effect appears by this diversity reception though the diversity effect doesn't appear regardless of non- correlations between two antennas in a conventional FSK receiver, and the satisfactory transmission quality is realized.

公开(公告)号：JPH0897811A

公开(公告)日：1996-04-12

申请号：JP23560094

申请日：1994-09-29

Applicant: TOSHIBA CORP

Inventor： NAKAJIMA NOBUYASU ,  SHINPO ATSUSHI ,  SERIZAWA MUTSUMI ,  NAMEKATA MINORU

IPC: G06F13/00 ,  G09C1/00 ,  H04L9/00 ,  H04L9/10 ,  H04L9/12 ,  H04L9/32

Abstract: PURPOSE: To effectively use the performance of high speed data transmission and to shorten connection time by transmitting ciphered service information, the authentication of a terminal and information for deciphering the ciphered information while separating transmission systems. CONSTITUTION: The intrinsic information 7 of the terminal and the service request 8 of data are transmitted from the terminal 2 through a second transmission system 4 to a service center 1. Then, the center 1 accesses a second data base 1b based on the information 7, reads service information data 10, ciphers them and transmits them through a first transmission system 3 to the terminal 2. Simultaneously, a cryptographic key 9 for deciphering the data 10 ciphered by the center 1 is transmitted through the system 4 to the terminal 2 and the terminal 2 deciphers the ciphered data 10 by using the key 9 and obtains the data 10. Thus, by concentrating on the service information, the system 3 can transmit the required service information within the connection time without losing a high speed property.

公开(公告)号：JPH0865390A

公开(公告)日：1996-03-08

申请号：JP19240294

申请日：1994-08-16

Applicant: TOSHIBA CORP

Inventor： KAMAGATA EIJI ,  KUMAKI YOSHINARI ,  NOUJIN KATSUYA ,  SAKAMOTO TAKEFUMI ,  SERIZAWA MUTSUMI

IPC: H04M3/42 ,  H04L29/06 ,  H04M3/00 ,  H04M11/00

Abstract: PURPOSE: To transfer multimedia calls to users extending between plural communication networks by selecting and controlling the communication means connecting with the plural communication networks by each means of an information recognition, a connective information storage, a protocol, a media and an identification conversion. CONSTITUTION: An information recognition means 2 recognizes the structure and meaning of information to be inputted in communication means 11 to 1n from communication networks A1 to An . A protocol conversion means 3 performs the conversion of the communication protocol between each communication network. A connective information storage means 4 stores the connective information between the terminals that service users have and the communication networks. An identifier conversion means 5 performs the corresponding of individual identifier and the subscriber identifier in each communication network. A media conversion means 7 converts the media of input information. A connection procedure storage means 8 stores the connection procedure for every service user. A communication selection means 6 selects the means 11 to 1n and a connection control means 9 uses the means 2 to 8 and performs controls. Thus, multimedia calls can be transferred to the service users between networks A1 to An .