REUSE OF A PHYSICAL CONTROL CHANNEL IN A DISTRIBUTED CELLULAR RADIO COMMUNICATION SYSTEM
    2.
    发明授权
    REUSE OF A PHYSICAL CONTROL CHANNEL IN A DISTRIBUTED CELLULAR RADIO COMMUNICATION SYSTEM 失效
    RE-使用物理控制信道分布式蜂窝无线通信系统

    公开(公告)号:EP0985324B1

    公开(公告)日:2006-04-12

    申请号:EP98921998.5

    申请日:1998-05-12

    IPC分类号: H04Q7/36 H04Q7/38

    CPC分类号: H04W74/002

    摘要: The present invention relates to the reuse of a control channel in a distributed cellular radio communication system. At least one physical channel, the so-called physical control channel, in the radio communication system is used for transferring logical control channels. According to the present invention, the physical uplink control channel can be reused with respect to logical control channels comprising an access request. The physical downlink control channel can be reused with respect to logical control channels comprising a message that access is granted to a mobile station or a message that someone requests contact with a mobile station. According to the invention, the physical uplink control channel and/or the physical downlink control channel is reused. This means that more connections per time unit may be established in the radio communication system.

    METHOD AND APPARATUS FOR ADAPTIVE CHANNEL ALLOCATION WITH POWER CONTROL IN A MOBILE COMMUNICATIONS SYSTEM
    3.
    发明公开
    METHOD AND APPARATUS FOR ADAPTIVE CHANNEL ALLOCATION WITH POWER CONTROL IN A MOBILE COMMUNICATIONS SYSTEM 失效
    方法和设备的功率控制的自适应信道分配在移动通信系统

    公开(公告)号:EP0815700A1

    公开(公告)日:1998-01-07

    申请号:EP96907848.0

    申请日:1996-03-20

    IPC分类号: H04B7 H04W16 H04W52

    摘要: In a cellular communication system, a method and apparatus are provided for allocating a channel for use on a connection between a base station and a mobile station in a cell, without making measurements of downlink interference. Throughout the system, uplink and downlink power levels are regulated so that, within each cell, their sum changes by an amount whose magnitude is substantially equal to the magnitude of change in path gain between the mobile station and the base station in that cell, and which sum is opposite in sign to the amount of change in path gain. This power regulation scheme assures that there will be a strong correlation between system-wide measurements of uplink and downlink interferen ce. Therefore, with the power regulation scheme in place, each cell determines uplink carrier to interference (C/I) ratios for the free channels available for use in the cell and selects an acceptable free channel having a C/I value that is within a predetermined acceptable range. If uplink C/I on the acceptable free channel is greater than the uplink C/I value of a channel currently assigned to a connection, then an intra-cell handover is performed so that the connection will be reassigned to the acceptable free channel. This technique is useful for providing an adaptive channel allocation scheme to systems, such as analog cellular communications systems, in which downlink interference measurements cannot be made.

    METHOD AND APPARATUS FOR ADAPTIVE CHANNEL ALLOCATION WITH POWER CONTROL IN A MOBILE COMMUNICATIONS SYSTEM
    4.
    发明授权
    METHOD AND APPARATUS FOR ADAPTIVE CHANNEL ALLOCATION WITH POWER CONTROL IN A MOBILE COMMUNICATIONS SYSTEM 失效
    方法和设备的功率控制的自适应信道分配在移动通信系统

    公开(公告)号:EP0815700B1

    公开(公告)日:2004-12-29

    申请号:EP96907848.4

    申请日:1996-03-20

    IPC分类号: H04Q7/36 H04B7/005

    摘要: In a cellular communication system, a method and apparatus are provided for allocating a channel for use on a connection between a base station and a mobile station in a cell, without making measurements of downlink interference. Throughout the system, uplink and downlink power levels are regulated so that, within each cell, their sum changes by an amount whose magnitude is substantially equal to the magnitude of change in path gain between the mobile station and the base station in that cell, and which sum is opposite in sign to the amount of change in path gain. This power regulation scheme assures that there will be a strong correlation between system-wide measurements of uplink and downlink interferen ce. Therefore, with the power regulation scheme in place, each cell determines uplink carrier to interference (C/I) ratios for the free channels available for use in the cell and selects an acceptable free channel having a C/I value that is within a predetermined acceptable range. If uplink C/I on the acceptable free channel is greater than the uplink C/I value of a channel currently assigned to a connection, then an intra-cell handover is performed so that the connection will be reassigned to the acceptable free channel. This technique is useful for providing an adaptive channel allocation scheme to systems, such as analog cellular communications systems, in which downlink interference measurements cannot be made.