公开(公告)号：US06477377B2

公开(公告)日：2002-11-05

申请号：US09087357

申请日：1998-05-29

申请人： Olof Tomas Backstrom ,  John Mark Freeze

发明人： Olof Tomas Backstrom ,  John Mark Freeze

IPC分类号： H04Q736

CPC分类号： H04W16/02 ,  H04W48/12

摘要： Cellular radiotelephone systems and methods communicate with cellular radiotelephones via multiple base stations. Radiotelephone traffic channels are used by the base stations for radiotelephone communications with the telephones. A common control channel is transmitted by the base stations, to control radiotelephone communications with the radiotelephones over the radiotelephone traffic channels. The common control channel is transmitted by a first one of the base stations over a first radio frequency and is transmitted by a second one of the base stations over a second radio frequency that is different from the first radio frequency. By providing a common control channel, excess control channel capacity can be reduced, thereby conserving control channel radio spectrum. Moreover, by transmitting the common control channel using multiple radio frequencies, the radio frequencies can be selected to reduce and preferably eliminate interference.

摘要翻译： 蜂窝无线电话系统和方法通过多个基站与蜂窝无线电话通信。 无线电话业务信道被基站用于与电话的无线电话通信。 基站发送公共控制信道，通过无线电话业务信道控制与无线电话机的无线电话通信。 所述公共控制信道由所述基站中的第一基站通过第一射频发送，并且由所述基站中的第二基站通过与所述第一射频不同的第二射频来发送。 通过提供公共控制信道，可以减少超控制信道容量，从而节省控制信道无线电频谱。 此外，通过使用多个无线电频率发送公共控制信道，可以选择射频以减少并优选地消除干扰。

公开(公告)号：US06198736B1

公开(公告)日：2001-03-06

申请号：US09015952

申请日：1998-01-30

申请人： Henrik Nyberg ,  John Mark Freeze ,  Randall Glenn Bright ,  Tomas Östman

发明人： Henrik Nyberg ,  John Mark Freeze ,  Randall Glenn Bright ,  Tomas Östman

IPC分类号： H04J306

CPC分类号： H04J3/0682 ,  H04B7/2693 ,  H04J3/0647 ,  H04J3/1623

摘要： An air frame synchronisation signal is transmitted as a data signal over a PCM link from a central unit to a plurality of remote radio transceivers, allowing the remote radio transceivers to recreate the AFS signal with the desired accuracy, compensating for transmission delays.

摘要翻译： 空中帧同步信号作为数据信号通过PCM链路从中央单元传输到多个远程无线电收发机，允许远程无线电收发机以期望的精度重新创建AFS信号，从而补偿传输延迟。

公开(公告)号：US06230014B1

公开(公告)日：2001-05-08

申请号：US09168787

申请日：1998-10-08

申请人： John Mark Freeze ,  Ronald L. Bexten

发明人： John Mark Freeze ,  Ronald L. Bexten

IPC分类号： H04Q722

CPC分类号： H04W36/06 ,  H04W36/18

摘要： A method is provided for controlling handoff of communications with a mobile station from a first radio transceiver to a second radio transceiver in a communication system having a common baseband processing unit operably connected to each of the radio transceivers. In one form, the method includes the steps of maintaining respective first and second voice paths with modulated signals uplinked from the first and second radio transceivers to the common baseband processing unit while communications with the mobile station are handed off from the first radio transceiver to the second radio transceiver.

摘要翻译： 提供了一种用于在具有可操作地连接到每个无线电收发器的公共基带处理单元的通信系统中控制与来自第一无线电收发机的通信到第二无线电收发器的通信的切换的方法。 在一种形式中，该方法包括以下步骤：在将与移动站的通信从第一无线电收发器切换到第一无线电收发机的同时，将具有从第一和第二无线电收发器上行链路的调制信号维持到公共基带处理单元的步骤 第二个无线电收发器。