TRAFFIC CHANNEL ASSIGNMENT IN A CELLULAR TELEPHONE SYSTEM USING AN UPLINK INTERFERENCE DRIVEN FREQUENCY PACKING METHOD

    公开(公告)号:CA2311368C

    公开(公告)日:2008-11-18

    申请号:CA2311368

    申请日:1998-11-20

    Abstract: Each base station in a cellular telephone system includes a signal strength measurement device operable to tune to and make signal strength measurements on not only the frequencies allocated to other cells, but also on its own allocated frequencies. Measurements are made by the device on those of its own frequencies having idle traffic channels to obtain an indication of injected uplink interference. An interference penalty is then assessed against the measured uplink interference for those frequencies having more than a threshold number of idle traffic channels. The adjusted measurements for the frequencies allocated to the cell are then sorted in relative order of idle traffic channel (adjusted) measured uplink interference from a least (adjusted) interfered frequency to a most (adjusted) interfered frequency. An idle traffic channel is then selected for assignment at either call set-up or hand-off from the least (adjusted) interfered frequency.

    A METHOD OF CONTROLLING POWER IN A WCDMA SYSTEM

    公开(公告)号:CA2668696A1

    公开(公告)日:2008-05-15

    申请号:CA2668696

    申请日:2006-11-06

    Abstract: A method and a device relating to a scheduling mechanism in a base statio n in a WCDMA system are disclosed. The mechanism enables the base station to rapidly adapt to users momentary traffic demands and to interference variat ions, a dynamical adjustable margin is proposed in this invention. The adjus tment is based on the RoT measurement in a cell. To fully use the resource i n a cell, the RoT can be targeted to be as closer to the RoTmax as possible however without exceed the limit. The scheduler is preferably set to schedul e as high a rate or as many users as possible to fill up the available RoT. The margin which is reserved for the neighboring cell load and external inte rference is decreased step by step as long as the RoT measurement is below a threshold under RoTmax. Whenever the RoT measurement exceeds the threshold, the margin is increased by one step.

    96.
    发明专利
    未知

    公开(公告)号:AT336869T

    公开(公告)日:2006-09-15

    申请号:AT01918079

    申请日:2001-03-27

    Abstract: The present invention relates to an arrangement and a method to render the handover-related signalling traffic in a Code Division Multiple Access (CDMA)-based communication system more effective by reducing the amount of handover-related signalling traffic that must be sent between user equipment and the network. The arrangement comprises, i.a., a delay unit at least in the user equipment or in both user equipment and an appropriate network unit. The method comprises, i.a., the steps of releasing a communication link to the radio base station of a candidate cell while keeping information about the neighbor cells of said candidate cell for a delay period that is indicated by said delay unit. Accordingly, if a communication link shall be re-established to said candidate cell, its neighbor cells are only retrieved if said a delay period has expired.

    98.
    发明专利
    未知

    公开(公告)号:BR9814996A

    公开(公告)日:2000-10-03

    申请号:BR9814996

    申请日:1998-11-20

    Abstract: Each base station in a cellular telephone system includes a signal strength measurement device operable to tune to and make signal strength measurements on not only the frequencies allocated to other cells, but also on its own allocated frequencies. Measurements are made by the device on those of its own frequencies having idle traffic channels to obtain an indication of injected uplink interference. An interference penalty is then assessed against the measured uplink interference for those frequencies having more than a threshold number of idle traffic channels. The adjusted measurements for the frequencies allocated to the cell are then sorted in relative order of idle traffic channel (adjusted) measured uplink interference from a least (adjusted) interfered frequency to a most (adjusted) interfered frequency. An idle traffic channel is then selected for assignment at either call set-up or hand-off from the least (adjusted) interfered frequency.

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