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    SYSTEM AND METHOD FOR IMPLEMENTING MULTIPLE CARRIERS IN CELLULAR NETWORKS
    54.
    发明专利
    SYSTEM AND METHOD FOR IMPLEMENTING MULTIPLE CARRIERS IN CELLULAR NETWORKS 未知

    公开(公告)号：CA2370695A1

    公开(公告)日：2000-10-26

    申请号：CA2370695

    申请日：2000-04-18

    Applicant: ERICSSON TELEFON AB L M

    Inventor： KARLSSON PATRIK ,  LUNDH PETER ,  ANDERSSON RUTGER ,  HANSSON BERT

    IPC: H04B7/005 ,  H04B7/26 ,  H04W16/00 ,  H04W16/24 ,  H04W52/32 ,  H04W72/04 ,  H04W84/04 ,  H04J13/00

    Abstract: A telecommunications system and method is disclosed for efficient and flexib le usage of bandwidth within a code division multiple access (CDMA) cell (210, 220, 230). Multiple carriers (250, 260) can be included within a CDMA cell (210, 220, 230), in which a different number of carriers can be allocated to downlink transmissions and uplink transmissions. In addition, a mobile stati on (MS) (150) can allocate downlink bandwidth from different carriers (250, 260 ) to contribute to a Traffic channel, making it possible to form high user bit - rates, e.g., 4 Mbps. A CDMA cell (210, 220, 230) can contain a Primary carri er (250) with all channel types and at least one Secondary carrier (260) with only dedicated channels and optionally power controlled common channels. The Primary carrier (250) has a primary scrambling code (270) and zero or more secondary scrambling codes (280) associated therewith, while the Secondary carrier (260) has one or more secondary scrambling codes (280) associated therewith.

    Adaptive frequency allocation in a telecommunication system
    55.
    发明专利
    Adaptive frequency allocation in a telecommunication system 未知

    公开(公告)号：NZ331323A

    公开(公告)日：2000-02-28

    申请号：NZ33132397

    申请日：1997-02-24

    Applicant: ERICSSON TELEFON AB L M

    Inventor： KARLSSON AKE ,  BRINGBY DANIEL ,  KARLSSON PATRIK ,  MAGNUSSON SVERKER

    IPC: H04W16/04 ,  H04W16/10 ,  H04B7/26 ,  H04Q7/38

    Abstract: In a telecommunications network, a method and apparatus for allocating frequency channels makes uplink and downlink signal quality measurements for channels that are in use or available for use and for channels that may become available for use. The measured uplink and downlink signal quality is compared for each of the channels. Already selected channels (i.e., channels in use or available for use) that exhibit poor signal quality characteristics because the measured downlink signal quality is less that a first predefined amount and the is also less than the measured uplink signal quality by a second predefined amount, are exchanged with candidate channels (i.e., channels that may become available for use) that exhibit better signal quality characteristics to thereby improve the overall signal quality of the network.

    Automated tool and method for frequency plan revision within a cellular telephone system
    56.
    发明专利
    Automated tool and method for frequency plan revision within a cellular telephone system 未知

    公开(公告)号：AU4943099A

    公开(公告)日：2000-01-17

    申请号：AU4943099

    申请日：1999-06-22

    Applicant: ERICSSON TELEFON AB L M

    Inventor： DUFOUR DANIEL ,  GUIMONT VINCENT ,  BRINGBY DANIEL ,  BRIERE SYLVAIN ,  KARLSSON PATRIK

    IPC: H04W16/18 ,  H04Q7/36

    Abstract: Interference and bit error rate measurements are made on the uplink and downlink to determine communications quality. Mobile station mobile assisted hand-off (MAHO) functionality is utilized to make the downlink measurements. Following filtering, the measurements are evaluated to identify potential candidates for reallocation. In one type of evaluation, when measured downlink bit error rate on a selected frequency is lower than a threshold and is worse than measured uplink bit error rate, then a better quality candidate is chosen to replace the selected frequency. In another type of evaluation, when a best available candidate has better interference than a worst quality one of the selected frequencies, that best candidate is chosen to replace the selected frequency.

    ASIGNACION DE FRECUENCIA ADAPTIVA EN UN SISTEMA DE TELECO- MUNICACIONES
    58.
    发明专利
    ASIGNACION DE FRECUENCIA ADAPTIVA EN UN SISTEMA DE TELECO- MUNICACIONES 未知

    公开(公告)号：CO4560524A1

    公开(公告)日：1998-02-10

    申请号：CO97010856

    申请日：1997-02-28

    Applicant: ERICSSON TELEFON AB L M

    Inventor： KARLSSON AKE ,  BRINGBY DANIEL ,  KARLSSON PATRIK ,  MAGNUSSON SVERKER

    IPC: G01L3/02

    Abstract: 1. EN UN SISTEMA DE TELECOMUNICACIONES, UN METODO PARA SIGNAR CANALES DE FRECUENCIA, QUE COMPRENDE, LOS SIGUIENTES PASOS: MEDIR LA CALIDAD DE LA SENAL DE ENLACE ASCENDENTE PARA CADA UNO DE UNA PLURALIDAD DE CANALES DE FRECUENCIA SELECCIONADO; MEDIR LA CALIDAD DE SENALDE ENLACE DESCENDENTE PA- RA CADA UNO DE UNA PLURALIDAD DE CANALES DE FRECUENCIA SELECCIONADOS; IDENTIFICAR UN CANAL DE FRECUENCIA SELECCIONADO DE LA PLURALIDAD DE CANALES DE FRECUENCIA SELECCIONA- DOS, SI LA CALIDAD DE LA SENAL DE ENLACE DESCEN- DENTE MEDIDA PARA EL CANAL DE FRECUENCIA SELECCIO- NADO ES MENOR QUE LA PRIMERA CANTIDAD PREDEFINIDA- DA Y LA CALIDAD DE LA SENAL DE ENLACE DESCENDENTE MEDIDAD PARA EL CANAL DE FRECUENCIA SELECCIONADO ES MENOR QUE LA PRIMERA CANTIDAD PREDEFINIDA Y LA CALIDAD DE LA SENAL DE ENLACE ASCENDENTE MEDIDA POR LO MENOS POR LA SEGUNDA CANTIDAD PREDEFINIDA; IDENTIFICAR UN CANALDE FRECUENCIA CANDIDATO CAILI- FICADO; E INTERCAMBIAR DICHO CANAL DE FRECUENCIA CANDIDADTO CAILFICADO POR EL CANAL DE FRECUENCIA SELECCIONADO 17. EN UNA RED DE TELECOMUNICACIONES, UN APARATO PARA ASIGNAR CANALES DE FRECUENCIA QUE COMPRENDE: MEDIOS PARA MEDIR LA CALIDAD DE LA SENAL DE ENLACE ASCENDENTE PARA CADA UNO DE UNA PLURALIDAD DE CANALES DE FRECUENCIA SELECCIONADOS; MEDIOS PARA MEDIR LA CALIDAD DE LA SENAL DE ENLACE DESCENDENTE PARA CADA UNO DE DICHA PLURALIDAD DE CACNLES DE FRECUENCIA SELECCIONADOS; MEDIOS PARA COMPARAR LA CALIDAD DE LA SENAL DE EN- LACE DESCENDENTE MEDIDAD PARA CADA UNO DE DICHA PLURALIDAD DE CANALES DE FRECUENCIA SELECCIONADOS. * VER FIGURA.

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