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    DATA TRANSMISSION SYSTEM
    2.
    发明专利
    DATA TRANSMISSION SYSTEM 失效

    公开(公告)号：JP2001211483A

    公开(公告)日：2001-08-03

    申请号：JP2000376207

    申请日：2000-12-11

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： DEMETRESCU CHRISTIAN ,  ILAS CONSTANTIN ,  SAMARAS KONSTANTINOS ,  SAMUEL LOUIS GWYN ,  SOMERVILLE FIONA CLARE A ,  WU JIAN JUN ,  YAN RAN-HONG

    IPC: H04Q7/38 ,  H04L12/28 ,  H04L12/56 ,  H04Q7/20 ,  H04Q7/22 ,  H04Q7/30 ,  H04Q7/36

    Abstract: PROBLEM TO BE SOLVED: To improve the polling rate in a data transmission system (e.g. mobile telephone network) having a base station and a plurality of satellite stations. SOLUTION: The all transmitters of the base station and all receivers of the satellite stations are tuned to the same downlink channel, all the transmitters of the satellite stations and all the receivers of the base station are tuned to a common uplink channel and at least one auxiliary uplink channel. The base station has a control means that generates a series of data packets and transmits the packets to the satellites. Each data packet has a header and a payload. In the header, the configuration and length are variable, and the header includes a 1st uplink state flag 12 for identifying a 1st selected satellite, at least one 2nd uplink state flag 14 for identifying a 2nd selected satellite, the identification 18 of the auxiliary uplink channel and a time slot 16.

    PACKET EXCHANGE CELLULAR RADIO COMMUNICATION HAND-OVER SYSTEM
    3.
    发明专利
    PACKET EXCHANGE CELLULAR RADIO COMMUNICATION HAND-OVER SYSTEM 失效

    公开(公告)号：JP2001103534A

    公开(公告)日：2001-04-13

    申请号：JP2000248126

    申请日：2000-08-18

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： DEMETRESCU CHRISTIAN ,  ILAS CONSTANTIN ,  SAMARAS CONSTANTINOS ,  SAMUEL LOUIS GWYN ,  SOMERVILLE FIONA CLARE A ,  WU JIAN JUN ,  YAN RAN-HONG

    IPC: H04J3/00 ,  H04B7/26 ,  H04L12/56 ,  H04W36/34 ,  H04Q7/22

    Abstract: PROBLEM TO BE SOLVED: To provide a packet exchange cellular radio communication hand-over system that can provide excellent QoS to RT transmission during hand-over in a GPRS and an EGPRS. SOLUTION: A cellular wireless communication system realizes hand-over of wireless transmission between a mobile station 32 and a cell of a network into wireless transmission between the cell of the network and other cell. The mobile station 32 has operation modes relating to the network as follows (a); a mobile station control autonomous re-selection mode where no measurement result is reported to the network, (b); mobile station control autonomous cell re-selection mode where the report of measurement result is transmitted to the network, (c); a network control cell re-selection mode where the mobile station reports the measurement result to the network, and (d); a network control real time cell selection mode where the mobile station reports the measurement result to the network. In the mode (c), the mobile station 32 can transmit a packet cell revision request message to the network in response to a local standard.

    IMPROVEMENTS IN AND RELATING TO DATA TRANSMISSION
    10.
    发明专利
    IMPROVEMENTS IN AND RELATING TO DATA TRANSMISSION 未知

    公开(公告)号：CA2325129A1

    公开(公告)日：2001-06-10

    申请号：CA2325129

    申请日：2000-11-06

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： YAN RAN-HONG ,  ILAS CONSTANTIN ,  SAMARAS KONSTANTINOS ,  SOMERVILLE FIONA CLARE ANGHARA ,  SAMUEL LOUIS GWYN ,  WU JIAN JUN ,  DEMETRESCU CRISTIAN

    IPC: H04B7/26 ,  H04B7/15 ,  H04L12/28 ,  H04L12/56 ,  H04Q7/20 ,  H04Q7/22 ,  H04Q7/30 ,  H04Q7/38

    Abstract: A mobile telephone network operating general packet radio service includes a base station (2) and a group of mobile telephones (M1 to M4). The base station (2) includes a control unit (8) which generates a successio n of data packets which are transmitted along a common downlink to all the mobiles (Ml to M8). Each data packet includes a header section containing an uplink state fl ag identifying a first selected mobile, to poll that mobile and cause it to return a packet of data to the base station along a common uplink channel. The header also includes an uplink state flag identifying a second selected mobile and is accompanied by the identity of and time slot for a second auxiliary uplink channel for polling the second mobil e to cause the second mobile to return a packet of data to the base station along said auxiliary uplink channel thereby enabling the polling of at least two mobiles using the same data packet. The polling sequence produced by the control unit (8) ensures that each mobi le is polled twice during each polling cycle, once accompanied with the identity o f and time slot for a secondary auxiliary uplink channel and once without.

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