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公开(公告)号：US5974325A
公开(公告)日：1999-10-26
申请号：US400303
申请日：1995-03-06
CPC分类号： H04W16/26 , H04W88/085 , H04W92/20
摘要： A communication system employs a method and apparatus for exchanging communicated signals between a communication unit (e.g., 17) and a central site (205). A remote base site (65) or the central site (205) determines whether a signal must be exchanged between the communication unit (17) and the central site (205). When a signal is to be exchanged, the remote base site (65) allocates a first radio frequency communication resource (75) for use in exchanging the signal between the communication unit (17) and the remote base site (65) and a second radio frequency communication resource (74) for use in exchanging the signal between the remote base site (65) and the central site (205).
摘要翻译： 通信系统采用在通信单元（例如17）和中心站点（205）之间交换通信信号的方法和装置。 远程基站（65）或中心站点（205）确定在通信单元（17）和中心站点（205）之间是否必须交换信号。 当要交换信号时，远程基站（65）分配用于在通信单元（17）和远程基站（65）之间交换信号的第一射频通信资源（75）和第二无线电 频率通信资源（74），用于在远程基站（65）和中心站点（205）之间交换信号。
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公开(公告)号：US6064269A
公开(公告)日：2000-05-16
申请号：US126873
申请日：1998-07-31
CPC分类号： H03F1/0222 , H03F2200/102
摘要： A power amplifier circuit (10) utilizes a step-wise variable voltage source (22) to improve amplifier (14) operating efficiency. In one preferred embodiment, an input signal to the step-wise variable voltage source is obtained by observing an operating characteristic of the amplifier. In an alternate preferred embodiment of the present invention, a characteristic of the input signal driving the amplifier stage is used to form an input signal to the step-wise variable input voltage source.
摘要翻译： 功率放大器电路（10）利用逐级可变电压源（22）来改善放大器（14）的工作效率。 在一个优选实施例中，通过观察放大器的工作特性来获得到逐级可变电压源的输入信号。 在本发明的替代优选实施例中，驱动放大器级的输入信号的特性被用于形成到逐级可变输入电压源的输入信号。
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公开(公告)号：US5737705A
公开(公告)日：1998-04-07
申请号：US395670
申请日：1995-02-28
摘要： A method for improved frequency assignment includes recording communications events (130), for example handoff statistics, for subscriber units handing to and away from a base station (931). The handoff statistics include the IDs of the other base stations (932-937) involved in the handoff, preferably along with the date and time of the handoff. The statistics of the handoff count are applied based on the number of occurrences within a time period (140), and are used to accept or reject the potential frequency assignments obtained from an assignment process. In one embodiment of this process, using a Q estimate, obtained from residual powers recorded on each frequency (430-435), a candidate frequency is chosen based on the lowest Q value (440). This candidate is tested against the handoff statistics, and if rejected, a frequency with the next lowest Q level is tested (450-470). This process is repeated until a frequency is assigned.
摘要翻译： 一种用于改进频率分配的方法包括：记录通信事件（130），例如切换统计信息，用于向基站（931）递送和离开的用户单元。 切换统计包括切换中涉及的其他基站（932-937）的ID，优选地与切换的日期和时间一起。 基于在时间段（140）内出现的次数应用切换计数的统计，并且用于接受或拒绝从分配过程获得的潜在频率分配。 在该过程的一个实施例中，使用从每个频率（430-435）上记录的残余功率获得的Q估计，基于最低Q值（440）选择候选频率。 该候选人根据切换统计量进行测试，如果被拒绝，则测试具有下一个最低Q级别的频率（450-470）。 重复此过程直到分配频率。
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