Method and apparatus for determining appropriate channels for communication
    21.
    发明授权
    Method and apparatus for determining appropriate channels for communication 有权
    用于确定通信的适当信道的方法和装置

    公开(公告)号:US07860500B2

    公开(公告)日:2010-12-28

    申请号:US11626921

    申请日:2007-01-25

    IPC分类号: H04B1/38

    摘要: During operation of a secondary communication system, nodes having different channel monitoring capabilities or requirements will cooperatively monitor possible frequencies for transmissions, each node using only a subset of all possible modulation sensing schemes. All nodes will share channel occupancy information to other nodes within the communication system. For example, a first group of nodes may monitor possible frequencies for television transmissions, while a second group of nodes may monitor the possible frequencies for APCO 25 transmissions. A group of nodes may also cooperatively monitor possible frequencies for more than one type of modulation transmission. Channel information will be shared among the nodes.

    摘要翻译: 在二次通信系统的操作期间,具有不同信道监测能力或需求的节点将协同地监测传输的可能频率,每个节点仅使用所有可能的调制感测方案的子集。 所有节点将共享信道占用信息到通信系统内的其他节点。 例如,第一组节点可以监视电视传输的可能频率,而第二组节点可监视APCO 25传输的可能频率。 一组节点还可以协作地监视多于一种类型的调制传输的可能频率。 频道信息将在节点之间共享。

    Method and apparatus for determining appropriate channels for communication
    22.
    发明授权
    Method and apparatus for determining appropriate channels for communication 有权
    用于确定通信的适当信道的方法和装置

    公开(公告)号:US07742764B2

    公开(公告)日:2010-06-22

    申请号:US11690323

    申请日:2007-03-23

    IPC分类号: H04W4/00 H04W72/00

    CPC分类号: H04W16/14 H04W72/02

    摘要: During operation of a secondary communication system 100, a device will perform spectrum sensing of certain channels (either by itself or as part of a group of nodes 104). When activity is found on a channel from a primary user, other devices will be notified that the channel is not available for use. The device may then modify its spectrum sensing to assist another device (or group of devices) that have not yet found activity on a different set of channels. By assigning additional channels to devices with extra capacity, the overall spectrum-sensing efficiency and performance of the communication system 100 is raised.

    摘要翻译: 在二次通信系统100的操作期间,设备将执行某些信道的频谱感测(由本身或作为一组节点104的一部分)。 当在主用户的频道上发现活动时,其他设备将被通知该频道不可用。 然后,设备可以修改其频谱感测以辅助尚未在不同的信道集合上发现活动的另一设备(或设备组)。 通过向具有额外容量的设备分配附加信道,提高了通信系统100的总体频谱感测效率和性能。

    Communication device providing dual mode operation
    23.
    发明授权
    Communication device providing dual mode operation 失效
    通信设备提供双模操作

    公开(公告)号:US06141560A

    公开(公告)日:2000-10-31

    申请号:US654502

    申请日:1996-05-28

    摘要: A cellular cordless telephone (10) operates with both a cordless base station (180) and a cellular base station (190) and cellular control terminal (196). In one embodiment (FIG. 2), a cellular cordless telephone (100) includes a cellular transceiver (120), antenna (128), keyboard (140), a display (180), handset (160), and microcomputer (130) together with a cordless transceiver (110) and antenna (118), all of which may be in a single housing. In another embodiment (FIG. 3), a cellular cordless telephone (200) includes a cellular telephone (220) and a cordless telephone transceiver (210) which may be a plugable module. Whenever cellular cordless telephone (10) is within range of cordless base station (180), telephone calls may be made over the cordless radio channel or transferred from the cellular radio channels to the cordless radio channel. If the cellular cordless telephone (10) thereafter moves out of range of the cordless base station (180), telephone calls may be made over the cellular radio channels or transferred from the cordless radio channel to one of the cellular telephone channels.

    摘要翻译: 蜂窝无绳电话(10)与无绳基站(180)和蜂窝基站(190)和蜂窝控制终端(196)一起工作。 在一个实施例(图2)中,蜂窝无绳电话(100)包括蜂窝收发器(120),天线(128),键盘(140),显示器(180),手机(160)和微计算机(130) 以及无绳收发器(110)和天线(118),所有这些都可以在单个外壳中。 在另一实施例(图3)中,蜂窝无绳电话(200)包括蜂窝电话(220)和无绳电话收发机(210),其可以是可插拔模块。 无线电话机(10)每当无线基站(180)的范围内时,可以通过无线无线电信道进行电话呼叫,或从蜂窝无线电信道传送到无绳无线电信道。 如果蜂窝无绳电话(10)此后移动到无绳基站(180)的范围之外,则可以通过蜂窝无线电信道进行电话呼叫或从无绳无线电信道传送到蜂窝电话信道之一。

    Communication device with a frequency compensating synthesizer and
method of providing same
    24.
    发明授权
    Communication device with a frequency compensating synthesizer and method of providing same 失效
    具有频率补偿合成器的通信装置及其提供方法

    公开(公告)号:US5856766A

    公开(公告)日:1999-01-05

    申请号:US885003

    申请日:1997-06-30

    摘要: A communication device including a plurality of frequency synthesizers (24, 28, 30). At least one of the frequency synthesizers (24) is driven with a reference frequency from a crystal oscillator (58). The at least one frequency synthesizer (24) includes a phase locked loop with a fractional-N divider (48) which is programmed by a control circuit (64) to vary as a function of temperature compensation, frequency compensation, and a frequency multiplication factor. The output (46) of the at least one frequency synthesizer (24) is used to provide a compensated reference frequency input for the remaining frequency synthesizers (28, 30). The radio provides all the frequency synthesizers (24, 28, 30) with temperature and frequency compensation using a reference frequency from a crystal oscillator (58) and only one high resolution frequency compensating synthesizer (24).

    摘要翻译: 一种包括多个频率合成器(24,28,30)的通信装置。 频率合成器(24)中的至少一个以来自晶体振荡器(58)的参考频率驱动。 所述至少一个频率合成器(24)包括具有分数N分频器(48)的锁相环,该分频器由控制电路(64)编程以根据温度补偿,频率补偿和频率倍增因子 。 所述至少一个频率合成器(24)的输出(46)用于为剩余频率合成器(28,30)提供经补偿的参考频率输入。 无线电设备使用来自晶体振荡器(58)和仅一个高分辨率频率补偿合成器(24)的参考频率来提供所有频率合成器(24,28,30)的温度和频率补偿。

    Frequency modifier for a transmitter
    25.
    发明授权
    Frequency modifier for a transmitter 失效
    变送器频率调节器

    公开(公告)号:US5535247A

    公开(公告)日:1996-07-09

    申请号:US126479

    申请日:1993-09-24

    摘要: A transmitter has an oscillator (101, 201, 303, 401, 501) that operates at frequency k multiplied by f.sub.c, thus the oscillator (101, 201, 303, 401, 501) outputs a signal at an output frequency, kf.sub.c. Coupled to the oscillator (101, 201, 303, 401, 501) is a frequency modifier (103, 205, 307, 405, 505), for modifying the oscillator output frequency by factor 1/k, thereby producing a signal at frequency f.sub.c at the frequency modifier output. Coupled to the frequency modifier output is a modulator (105, 215, 301, 407-417, 507-517) for producing a modulated output signal substantially centered at frequency f.sub.c.

    摘要翻译: 发射机具有以频率k乘以fc的振荡器(101,201,303,401,501),因此振荡器(101,201,303,401,501)以输出频率kfc输出信号。 耦合到振荡器(101,201,303,401,501)的是频率修正器(103,205,307,405,505),用于将振荡器输出频率修正因子1 / k,从而产生频率fc的信号 在频率修改器输出。 耦合到频率修改器输出的是用于产生基本上以频率fc为中心的调制输出信号的调制器(105,215,301,407-417,507-517)。

    Cellular cordless telephone which polls information in a memory to
determine a pre-selected preference and a stored availability of call
forwarding
    26.
    发明授权
    Cellular cordless telephone which polls information in a memory to determine a pre-selected preference and a stored availability of call forwarding 失效
    蜂窝无绳电话,其轮询存储器中的信息以确定预选的偏好和存储的呼叫转移的可用性

    公开(公告)号:US5463674A

    公开(公告)日:1995-10-31

    申请号:US275883

    申请日:1994-07-15

    摘要: A cellular cordless telephone (10) operates with both a cordless base station (180) and a cellular base station (190) and cellular control terminal (196). In one embodiment (FIG. 2 ), a cellular cordless telephone (100) includes a cellular transceiver (120), antenna (128), keyboard (140), a display (180), handset (160), and microcomputer (130) together with a cordless transceiver (110) and antenna (118), all of which may be in a single housing. In another embodiment (FIG. 3 ), a cellular cordless telephone (200) includes a cellular telephone (220) and a cordless telephone transceiver (210) which may be a plugable module. Whenever cellular cordless telephone (10) is within range of cordless base station (180), telephone calls may be made over the cordless radio channel or transferred from the cellular radio channels to the cordless radio channel. If the cellular cordless telephone (10) thereafter moves out of range of the cordless base station (180), telephone calls may be made over the cellular radio channels or transferred from the cordless radio channel to one of the cellular telephone channels.

    摘要翻译: 蜂窝无绳电话(10)与无绳基站(180)和蜂窝基站(190)和蜂窝控制终端(196)一起工作。 在一个实施例(图2)中,蜂窝无绳电话(100)包括蜂窝收发器(120),天线(128),键盘(140),显示器(180),手机(160)和微计算机(130) 以及无绳收发器(110)和天线(118),所有这些都可以在单个外壳中。 在另一实施例(图3)中,蜂窝无绳电话(200)包括蜂窝电话(220)和无绳电话收发机(210),其可以是可插拔模块。 无线电话机(10)每当无线基站(180)的范围内时,可以通过无线无线电信道进行电话呼叫,或从蜂窝无线电信道传送到无绳无线电信道。 如果蜂窝无绳电话(10)此后移动到无绳基站(180)的范围之外,则可以通过蜂窝无线电信道进行电话呼叫或从无绳无线电信道传送到蜂窝电话信道之一。

    Cellular cordless telephone
    27.
    发明授权
    Cellular cordless telephone 失效
    手机无绳电话

    公开(公告)号:US5367558A

    公开(公告)日:1994-11-22

    申请号:US203711

    申请日:1994-02-28

    CPC分类号: H04W36/30 H04W36/14 H04W88/16

    摘要: A cellular cordless telephone (10) operates with both a cordless base station (180) and a cellular base station (190) and cellular control terminal (196). In one embodiment (FIG. 2), a cellular cordless telephone (100) includes a cellular transceiver (120), antenna (128), keyboard (140), a display (180), handset (160), and microcomputer (130) together with a cordless transceiver (110) and antenna (118), all of which may be in a single housing. In another embodiment (FIG. 3), a cellular cordless telephone (200) includes a cellular telephone (220) and a cordless telephone transceiver (210) which may be a plugable module. Whenever cellular cordless telephone (10) is within range of cordless base station (180), telephone calls may be made over the cordless radio channel or transferred from the cellular radio channels to the cordless radio channel. If the cellular cordless telephone (10) thereafter moves out of range of the cordless base station (180), telephone calls may be made over the cellular radio channels or transferred from the cordless radio channel to one of the cellular telephone channels.

    摘要翻译: 蜂窝无绳电话(10)与无绳基站(180)和蜂窝基站(190)和蜂窝控制终端(196)一起工作。 在一个实施例(图2)中,蜂窝无绳电话(100)包括蜂窝收发器(120),天线(128),键盘(140),显示器(180),手机(160)和微计算机(130) 以及无绳收发器(110)和天线(118),所有这些都可以在单个外壳中。 在另一实施例(图3)中,蜂窝无绳电话(200)包括蜂窝电话(220)和无绳电话收发机(210),其可以是可插拔模块。 无线电话机(10)每当无线基站(180)的范围内时,可以通过无线无线电信道进行电话呼叫,或从蜂窝无线电信道传送到无绳无线电信道。 如果蜂窝无绳电话(10)此后移动到无绳基站(180)的范围之外,则可以通过蜂窝无线电信道进行电话呼叫或从无绳无线电信道传送到蜂窝电话信道之一。

    Cellular cordless telephone
    28.
    发明授权
    Cellular cordless telephone 失效
    手机无绳电话

    公开(公告)号:US5127042A

    公开(公告)日:1992-06-30

    申请号:US660180

    申请日:1991-02-25

    IPC分类号: H04W36/14 H04W84/16 H04W88/06

    CPC分类号: H04W84/16 H04W76/02 H04W88/06

    摘要: A cellular cordless telephone (10) operates with both a cordless base station (180) and a cellular base station (190) and cellular control terminal (196). In one embodiment (FIG. 2) , a cellular cordless telephone (100) includes a cellular transceiver (120), antenna (128), keyboard (140), a display (180), handset (160), and microcomputer (130) together with a cordless transceiver (110) and antenna (118), all of which may be in a single housing. In another embodiment (FIG. 3), a cellular cordless telephone (200) includes a cellular telephone (220) and a cordless telephone transceiver (210) which may be a plugable module. Whenever cellular cordless telephone (10) is within range of cordless base station (180), telephone calls may be made over the cordless radio channel or transferred from the cellular radio channels to the cordless radio channel. If the cellular cordless telephone (10) thereafter moves out of range of the cordless base station (180), telephone calls may be made over the cellular radio channels or transferred from the cordless radio channel to one of the cellular telephone channels.

    摘要翻译: 蜂窝无绳电话(10)与无绳基站(180)和蜂窝基站(190)和蜂窝控制终端(196)一起工作。 在一个实施例(图2)中,蜂窝无绳电话(100)包括蜂窝收发器(120),天线(128),键盘(140),显示器(180),手机(160)和微计算机(130) 以及无绳收发器(110)和天线(118),所有这些都可以在单个外壳中。 在另一实施例(图3)中,蜂窝无绳电话(200)包括蜂窝电话(220)和无绳电话收发机(210),其可以是可插拔模块。 无线电话机(10)每当无线基站(180)的范围内时,可以通过无线无线电信道进行电话呼叫,或从蜂窝无线电信道传送到无绳无线电信道。 如果蜂窝无绳电话(10)此后移动到无绳基站(180)的范围之外,则可以通过蜂窝无线电信道进行电话呼叫或从无绳无线电信道传送到蜂窝电话信道之一。

    Fractional-division synthesizer for a voice/data communications systems
    29.
    发明授权
    Fractional-division synthesizer for a voice/data communications systems 失效
    语音/数据通信系统的分类合成器

    公开(公告)号:US5065408A

    公开(公告)日:1991-11-12

    申请号:US515000

    申请日:1990-04-26

    申请人: Steven F. Gillig

    发明人: Steven F. Gillig

    CPC分类号: H03L7/1976

    摘要: A fractional-division synthesizer for a digital transceiver is disclosed in which the fractional divisor may be separated into an integer, N, and a fraction made up of two integers, [n/d]. The integer n is the numerator of the fraction part of the fractional divisor. The integer N is the whole number portion of the fractional divisor. The integer d multiplied by the value of the transceiver channel spacing is algebraically related to the frequency of the reference oscillator. A bit rate clock is also derived from the reference oscillator.

    摘要翻译: 公开了一种用于数字收发器的小数分割合成器,其中分数除数可以被分成整数N和由两个整数[n / d]组成的分数。 整数n是分数除数的分数部分的分子。 整数N是分数除数的整数部分。 乘以收发信道间隔的值的整数d与参考振荡器的频率有代数关系。 比特率时钟也来自参考振荡器。

    Method and means of detecting the presence of a signal representing
voice and of compressing the level of the signal
    30.
    发明授权
    Method and means of detecting the presence of a signal representing voice and of compressing the level of the signal 失效
    检测表示语音的信号的存在以及压缩信号电平的方法和装置

    公开(公告)号:US4550426A

    公开(公告)日:1985-10-29

    申请号:US680444

    申请日:1984-12-11

    摘要: A circuit that combines the functions of audio compression and voice detection comprises an amplifier in a negative-feedback configuration in which the feedback signal is the product of the output of the amplifier and a syllabic voltage derived from that output. The syllabic voltage is compared with a threshold level to provide an output that is a measure of the presence of a voice signal. In an alternate embodiment, the syllabic voltage is compared with the sum of a threshold level and a detected syllabic voltage to generate a signal that is a measure of the presence of voice. The syllabic detector may be either an averaging detector or a valley detector.

    摘要翻译: 组合音频压缩和语音检测功能的电路包括负反馈配置的放大器,其中反馈信号是放大器的输出和从该输出得到的音节电压的乘积。 将音节电压与阈值电平进行比较,以提供作为语音信号存在度量的输出。 在替代实施例中,将音节电压与阈值电平和检测到的音节电压的和进行比较,以产生作为语音存在的度量的信号。 音节检测器可以是平均检测器或谷值检测器。