中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

200 records (took 0.027 seconds)

    41.
    发明专利
    未知

    公开(公告)号：FI106672B

    公开(公告)日：2001-03-15

    申请号：FI933458

    申请日：1993-08-03

    Applicant: ERICSSON TELEFON AB L M

    Inventor： BODIN STIG ROLAND ,  KALLIN HARALD ,  VOIGT LOTTA

    IPC: H04W28/16 ,  H04W36/08 ,  H04B7/26 ,  H04Q7/00

    Abstract: A method and system for ensuring that handoff requests take priority over new cell requests to engage voice channels assigned to a particular target cell are provided. A certain number of channels are reserved for handoff requests. However, if no channels, reserved or unreserved, are available, handoff requests to a particular target cell are stored in a corresponding queue for a predetermined period of time. Thus, when voice channels become available, they are seized in order to satisfy the handoff requests stored in that queue. If the handoff queue is empty, new call requests to a target cell may be assigned to available voice channels.

    42.
    发明专利
    未知

    公开(公告)号：NL194024B

    公开(公告)日：2000-12-01

    申请号：NL9220010

    申请日：1992-12-08

    Applicant: ERICSSON TELEFON AB L M

    Inventor： KALLIN HARALD ,  FALLGREN ANNA

    IPC: H04W16/32 ,  H04W74/00 ,  H04Q7/36

    Abstract: A cellular mobile radiotelephone system listens for call accesses on a control channel of an umbrella cell and on a control channel of a microcell located within said umbrella cell and responds to the call access only on the control channel of the umbrella cell. More particularly, the microcells within a particular umbrella cell are provided with listen-only control channel at the same frequency as the uplink control channel of the umbrella cell. An umbrella cell and one or several of its microcells may therefore each receive the same call accesses. During call access, the umbrella cell and each of the microcells determines the strength of the received signal and forwards this information to the system. The system selects the most appropriate cell out of the umbrella cell and the microcells to handle the call and causes the umbrella cell to respond to the call access on its downlink control channel. Among the umbrella cell and its microcells, there are therefore a plurality of uplink control channels, one for each defined cell, and a single downlink control channel, namely that of the umbrella cell. Cell planning remains unchanged as does a directed retry mechanism. Because there is only a single downlink control channel within the coverage area of an umbrella cell, excessive rescanning is avoided. Furthermore, a call is established at the outset in the most appropriate cell, using resources more efficiently and avoiding congestion in the umbrella cell.

    44.
    发明专利
    未知

    公开(公告)号：SE9803916L

    公开(公告)日：2000-05-18

    申请号：SE9803916

    申请日：1998-11-17

    Applicant: ERICSSON TELEFON AB L M

    Inventor： FRODIGH CARL MAGNUS ,  ALMGREN MAGNUS ,  KALLIN HARALD ,  JOHANSSON CHRISTER ,  HALVARSON MATS

    IPC: H04J13/00 ,  H04B7/26 ,  H04W24/00 ,  H04Q7/34 ,  H04Q7/22

    Abstract: In a mobile telecommunication system the transmission quality is dependent on a wide range of radio conditions. A method for extracting a useful estimation of the radio environment of a mobile station in communication in order to predict how the radio conditions will change in the near future for a considered mobile station in the near future. A measurement report is sent from the mobile station to the base station. The quality measure in the measurement report is filtered over the area by a smoothing filter (220), and then processed through an updating filter (230) resulting in a time varying map (240). Several maps are classified (260). Classified data are grouped (270) resulting in the final map, which is stored in a database (280). The final map may be used to enhance the performance of radio network algorithms.

    A method and apparatus for enhancing signalling reliability in a cellular mobile radio telephone system
    45.
    发明专利
    A method and apparatus for enhancing signalling reliability in a cellular mobile radio telephone system 未知

    公开(公告)号：GR3030896T3

    公开(公告)日：1999-11-30

    申请号：GR990401977

    申请日：1999-07-30

    Applicant: ERICSSON TELEFON AB L M

    Inventor： GHISLER WALTER ,  DAHLIN JAN ERIK AKE STEINAR ,  KALLIN HARALD

    IPC: H04B7/26 ,  H04W36/08 ,  H04Q7/22

    Abstract: A method and apparatus for achieving reliable transmission of signalling messages in a cellular system in which the frequency plan, frequency/time slot allocation plan, code channel allocation plan, or dynamic/adaptive channel allocation rule of the system is violated by allowing adjacent base stations to reuse particular frequencies/time slots/channels for signalling a particular mobile station. In situations where signalling messages, such as handoff commands, which are communicated between a base station and a mobile station are not properly received by the mobile station, an alternate communications channel will be established to ensure the reception of these messages. The alternate channel is provided by repeating the message through a channel associated with a base station which has better radio characteristics. The channel selected for transmission of the message by the new base station will be on the same frequency/time slot/code as used by the established connection.

    47.
    发明专利
    未知

    公开(公告)号：ES2108039T3

    公开(公告)日：1997-12-16

    申请号：ES91850283

    申请日：1991-11-18

    Applicant: ERICSSON TELEFON AB L M

    Inventor： KALLIN HARALD ,  BODIN ROLAND

    IPC: H04W72/08 ,  H04W74/08 ,  H04B7/26 ,  H04Q7/38

    Abstract: A method and apparatus for use in a cellular mobile radio telephone system for determining which of one of several mobile generated transmissions received in a mobile switching center, sent from the same mobile station via more than one base station, should be accepted. A determination is made based on the relative signal strengths of the signals received by the base stations and by the relative time of occurrence of the mobile generated transmissions.

    48.
    发明专利
    未知

    公开(公告)号：ES2104958T3

    公开(公告)日：1997-10-16

    申请号：ES92925001

    申请日：1992-12-08

    Applicant: ERICSSON TELEFON AB L M

    Inventor： BODIN ROLAND ,  KALLIN HARALD ,  VOIGT LOTTA

    IPC: H04W28/16 ,  H04W36/08 ,  H04B7/26 ,  H04Q7/00

    Abstract: A method and system for ensuring that handoff requests take priority over new cell requests to engage voice channels assigned to a particular target cell are provided. A certain number of channels are reserved for handoff requests. However, if no channels, reserved or unreserved, are available, handoff requests to a particular target cell are stored in a corresponding queue for a predetermined period of time. Thus, when voice channels become available, they are seized in order to satisfy the handoff requests stored in that queue. If the handoff queue is empty, new call requests to a target cell may be assigned to available voice channels.

    TRANSFERENCIA ASISTIDA MOVIL MEJORADA.
    50.
    发明专利
    TRANSFERENCIA ASISTIDA MOVIL MEJORADA. 未知

    公开(公告)号：MX9704310A

    公开(公告)日：1997-09-30

    申请号：MX9704310

    申请日：1995-12-11

    Applicant: ERICSSON TELEFON AB L M

    Inventor： KALLIN HARALD ,  FALLGREN ANNA

    IPC: H04W16/32 ,  H04W36/04 ,  H04W36/30 ,  H04Q07/38

    Abstract: Se presentan varios métodos de transferencia asistida movil para su uso en un sistema de comunicacion celular que comprende varias células. Primero, se mide el nivel de calidad de una célula que una estacion movil está empleando actualmente para determinar si dicho nivel de calidad es superior e inferior a un umbral. Si el nivel de calidad es inferior al umbral, se asigna una lista primaria de células a la estacion movil mientras que si el nivel de calidad se encuentra por encima del umbral se asigna una lista secundaria de células a la estacion movil. La estacion movil mide después el nivel de calidad de cada una de las células asignadas y se reporta dicho nivel al sistema de comunicacion.

Patent Agency Ranking