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    • 3. 发明授权
    • Method and system for avoiding bad frequency subsets in a frequency hopping cordless telephone system
    • 用于避免跳频无绳电话系统中不良频率子集的方法和系统
    • US06480721B1
    • 2002-11-12
    • US09113396
    • 1998-07-10
    • Uwe SydonJuergen KockmannOlaf DickerPaulus Sastrodjojo
    • Uwe SydonJuergen KockmannOlaf DickerPaulus Sastrodjojo
    • H04Q720
    • H04B1/715H04B1/713H04B2001/7154
    • A method and system are disclosed for avoiding bad frequency subsets in a frequency hopping cordless telephone system. A base station communicates with the handsets using frequencies selected from active frequency subsets. Bad frequency subsets are avoided by monitoring the air interface between the base station and handsets for errors in active frequency subsets. Errors in each active frequency subset are counted during a short-term interval using an associated short-term error counter and during a long-term interval using an associated long-term error counter. After each short-term interval, it is evaluated whether any of the short-term error counters has a value that is greater than a defined threshold. After each long-term interval, it is evaluated whether any of the long-term error counters has a value greater than an error count for a blocked frequency subset. A blocked frequency subset is then substituted for an active frequency subset if an associated short-term error counter is greater than the defined threshold or if a long-term error counter is greater than the error count for a blocked frequency subset.
    • 公开了一种用于避免跳频无绳电话系统中的不良频率子集的方法和系统。 基站使用从活动频率子集中选择的频率与手机进行通信。 通过监视基站和手机之间的空中接口以避免有效频率子集中的错误,可以避免错误的频率子集。 每个活动频率子集中的错误在短期间隔期间使用关联的短期错误计数器以及在使用相关联的长期错误计数器的长期间隔期间进行计数。 在每个短期间隔之后,评估任何短期错误计数器是否具有大于定义阈值的值。 在每个长期间隔之后,评估任何长期错误计数器是否具有大于阻塞频率子集的错误计数的值。 如果相关联的短期错误计数器大于定义的阈值,或者如果长期错误计数器大于阻塞频率子集的错误计数,则将阻塞的频率子集替换为有效频率子集。
    • 9. 发明授权
    • Method and system for avoiding periodic bursts of interference in wireless communication between a mobile unit and a base unit
    • 用于避免在移动单元和基本单元之间的无线通信中的周期性干扰突发的方法和系统
    • US06496498B1
    • 2002-12-17
    • US09443931
    • 1999-11-19
    • Juergen KockmannUwe SydonPaulus Sastrodjojo
    • Juergen KockmannUwe SydonPaulus Sastrodjojo
    • H04B728
    • H04W52/04H04B1/1027
    • A method is provided for interfacing telecommunication devices. A base unit is connected to a landline for wireless communication. The base unit has a power supply operating at a power supply frequency. A mobile unit is provided for wireless communication with the base unit. The base unit is interfaced to the mobile unit using an interface protocol that has a plurality of frames. Each frame is for transmitting signals from the mobile unit to the base unit and from the base unit to the mobile unit. The frames have a specified frame length. An interference frequency is detected at either the base unit or the mobile unit. The interference frequency is compared with the power supply frequency. The frames are synchronized with the power supply and the specified frame length is adjusted based on the power supply frequency when the interference frequency and the power supply frequency are substantially the same.
    • 提供了一种用于接口电信设备的方法。 基本单元连接到用于无线通信的固定电话。 基座单元具有以电源频率工作的电源。 提供移动单元用于与基本单元的无线通信。 基本单元使用具有多个帧的接口协议与移动单元接口。 每个帧用于将信号从移动单元发送到基本单元,并且从基本单元传输到移动单元。 帧具有指定的帧长度。 在基本单元或移动单元处检测到干扰频率。 将干扰频率与电源频率进行比较。 帧与电源同步,并且当干扰频率和电源频率基本相同时,基于电源频率来调整指定的帧长度。
    • 10. 发明授权
    • Method and system for a wireless communication system incorporating channel selection algorithm for 2.4 GHz direct sequence spread spectrum cordless telephone system
    • 一种包含2.4 GHz直接序列扩频无绳电话系统信道选择算法的无线通信系统方法和系统
    • US06466800B1
    • 2002-10-15
    • US09444057
    • 1999-11-19
    • Uwe SydonJuergen KockmanPaulus Sastrodjojo
    • Uwe SydonJuergen KockmanPaulus Sastrodjojo
    • H04L2730
    • H04B1/7143
    • A method and system are provided for selecting a communication channel in a wireless communication system. The method and system include defining a plurality of channel groups. Each channel group corresponds to a plurality of communication channels. The method and system also includes setting a set counter to the channel group having the current communication channel. Further, the set counter is incremented after each channel hop and an index counter is incremented when the set counter resets. Next, a sequence number is determined as a function of the set counter and an identifier is associated with the wireless communication device. The method and system continues with determining an offset as a function of the sequence number and the index counter and determining a next communication channel as a function of the set counter and the offset.
    • 提供了一种在无线通信系统中选择通信信道的方法和系统。 该方法和系统包括定义多个信道组。 每个信道组对应于多个通信信道。 该方法和系统还包括设置具有当前通信信道的信道组的集合计数器。 此外,设置的计数器在每个通道跳数之后递增,并且当设置的计数器复位时,指令计数器递增。 接下来,根据所设置的计数器确定序列号,并且标识符与无线通信设备相关联。 该方法和系统继续确定作为序列号和索引计数器的函数的偏移量,并根据所设置的计数器和偏移确定下一个通信信道。