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1. 发明专利

BR0012870A 未知
公开(公告)号：BR0012870A
公开(公告)日：2002-04-16
申请号：BR0012870
申请日：2000-07-24
申请人： ARI HOTTINEN , MARKO TEITTINEN , OGUZ SUNAY M
发明人： HOTTINEN ARI , TEITTINEN MARKO , SUNAY M OGUZ
IPC分类号： H04J1/00 , H04J3/00 , H04W36/14 , H04W36/18 , H04Q7/38
摘要： A system and method for controlling information transmission and communication handoff between frequency division multiplexing (FDD) and time division multiplexing (TDD) communication systems using any multiple access scheme is provided. The mobile unit transmits information via a current one of the FDD and TDD communication systems while it moves toward the other, or targeted one of the FDD and TDD communication systems. A pilot search signal is generated by the targeted communication system, where the pilot search signal corresponds to a transmission range of the targeted communication system. A communication handoff is initiated from the current communication system to the targeted communication system when the mobile unit recognizes a predetermined threshold level of the pilot search signal. Concurrent communications are synchronized and temporarily maintained between the mobile unit and both the current and targeted communications systems using an increased data rate for each of the communications links. When the handoff is complete, transmission between the mobile unit and the current communication system is terminated, while communication between the mobile unit and the targeted communication system is maintained when the handoff is complete.

2. 发明专利

AU6367500A System and method for performing soft handoff between frequency division duplex and time division duplex communication systems 未知
公开(公告)号：AU6367500A
公开(公告)日：2001-02-19
申请号：AU6367500
申请日：2000-07-24
申请人： ARI HOTTINEN , TEITTINEN MARKO , SUNAY M OGUZ
发明人： HOTTINEN ARI , TEITTINEN MARKO , SUNAY M OGUZ
IPC分类号： H04J1/00 , H04J3/00 , H04W36/14 , H04W36/18 , H04Q7/38
摘要： A system and method for controlling information transmission and communication handoff between frequency division multiplexing (FDD) and time division multiplexing (TDD) communication systems using any multiple access scheme is provided. The mobile unit transmits information via a current one of the FDD and TDD communication systems while it moves toward the other, or targeted one of the FDD and TDD communication systems. A pilot search signal is generated by the targeted communication system, where the pilot search signal corresponds to a transmission range of the targeted communication system. A communication handoff is initiated from the current communication system to the targeted communication system when the mobile unit recognizes a predetermined threshold level of the pilot search signal. Concurrent communications are synchronized and temporarily maintained between the mobile unit and both the current and targeted communications systems using an increased data rate for each of the communications links. When the handoff is complete, transmission between the mobile unit and the current communication system is terminated, while communication between the mobile unit and the targeted communication system is maintained when the handoff is complete.

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