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    • 2. 发明授权
    • Method and apparatus for allocating frequencies among multiple talkgroups
    • 用于在多个通话组中分配频率的方法和装置
    • US08660542B2
    • 2014-02-25
    • US13331580
    • 2011-12-20
    • Daniel J. McDonaldLeslie G. GustafsonMark Shahaf
    • Daniel J. McDonaldLeslie G. GustafsonMark Shahaf
    • H04M3/42
    • H04W72/005H04W76/40H04W84/08
    • A multi-carrier receiver radio monitors frequency channels associated with at least one talkgroup to which a multi-carrier receiver radio subscribes. The talkgroup is associated with a set of frequency channels that may carry group call activity. The radio monitors each frequency channel of the set of frequency channels associated with the talkgroup for group call activity. During monitoring, when a new call is detected on one frequency channel of the set of frequency channels associated with the talkgroup, the radio joins the new call. While joined to the new call, the radio continues to monitor the set of frequency channels associated with the talkgroup for additional transmissions to the talkgroup and to monitor a set of frequency channels associated with another talkgroup to which the multi-carrier receiver radio also subscribes for group call activity on the other talkgroup.
    • 多载波接收机无线电监测与多载波接收机无线电订阅的至少一个通话组相关联的频率信道。 通话组与可以携带群组呼叫活动的一组频道相关联。 无线电台监视与用于群组呼叫活动的通话组相关联的一组频道的每个频道。 在监视期间,当在与通话组相关联的一组频道的一个频道上检测到新的呼叫时,无线电台加入新呼叫。 在加入新呼叫的同时,无线电继续监视与通话组相关联的一组频道,用于对话组的附加传输,并且监视与多载波接收机无线电还预订的另一谈话组相关联的一组频道 另一个通话组的群组通话活动。
    • 3. 发明授权
    • Dynamically re-configured incident scene communication based on incident scene factors
    • 基于事件场景因素动态重新配置事件现场通信
    • US08634799B1
    • 2014-01-21
    • US13597454
    • 2012-08-29
    • George R. EconomyDaniel J. McDonaldDean M. PichaMark Shahaf
    • George R. EconomyDaniel J. McDonaldDean M. PichaMark Shahaf
    • H04M11/04
    • H04W48/18H04W8/186H04W48/16H04W76/50
    • An incident commander computing device dynamically reconfigures subscriber unit usage of radio access networks by first identifying, based at least on a type of incident occurring within a particular geographic area, a first incident response group having a first higher priority for responding to the incident and a second incident response group having a second lower priority for responding to the incident, then identifying a first higher priority radio access network having a sufficient coverage level across the particular geographic area and a second lower priority radio access network having a sufficient coverage level across the particular geographic area, and finally assigning the first incident response group to the first higher priority radio access network and assigning the second incident response group to the second lower priority radio access network.
    • 事件指挥官计算设备通过首先基于在特定地理区域内发生的事件的类型来首先识别具有用于响应事件的第一较高优先级的第一事件响应组,以及 第二事件响应组具有用于响应事件的第二较低优先级,然后识别具有跨越特定地理区域的足够覆盖水平的第一较高优先级无线电接入网络和具有跨所述特定地理区域的足够覆盖水平的第二较低优先级无线电接入网络 并且最后将第一事件响应组分配给第一高优先级无线电接入网络,并将第二事件响应组分配给第二低优先级无线电接入网络。
    • 4. 发明授权
    • Using a push to talk over cellular infrastructure for radio communications
    • 利用蜂窝基础设施进行无线电通信
    • US08929938B2
    • 2015-01-06
    • US13190768
    • 2011-07-26
    • Eitan KorenGalina KorkhinMark ShahafAbraham Tooba
    • Eitan KorenGalina KorkhinMark ShahafAbraham Tooba
    • H04B7/00H04W4/10
    • H04W4/10
    • At least one subscriber unit (SU) (110) can register with a radio frequency (RF) site (120) for radio services. For each registered SU, a SU push to talk over cellular (PoC) client (342-346) can be activated/established. Communications can be mapped at the RF Site (120) between each registered SU (110) and a corresponding SU PoC client (342-346). Each SU PoC client (342-346) at the RF site (120) can be communicatively linked to a remotely located PoC server (132) using a PoC interface (226). The SU PoC client (342-346) is a communication endpoint of the PoC server (132). In one embodiment, a talkgroup PoC client (350-352) can be established at the RF site (120) that is linked to the PoC server (132). Radio communications to and from the SU (110) can be routed through the SU PoC client (342-346) and/or the talkgroup PoC client (350-352) and through the PoC server (132).
    • 至少一个用户单元(SU)(110)可以向无线电服务的射频(RF)站点(120)注册。 对于每个已注册的SU,可以激活/建立SU蜂窝通信(PoC)客户端(342-346)。 可以在每个注册的SU(110)和相应的SU PoC客户端(342-346)之间的RF站点(120)处映射通信。 RF站点(120)处的每个SU PoC客户端(342-346)可以使用PoC接口(226)通信地链接到位于远程的PoC服务器(132)。 SU PoC客户端(342-346)是PoC服务器(132)的通信端点。 在一个实施例中,可以在链接到PoC服务器(132)的RF站点(120)处建立通话组PoC客户端(350-352)。 可以通过SU PoC客户端(342-346)和/或通话组PoC客户端(350-352)和通过PoC服务器(132)来路由到来自SU(110)的无线电通信。
    • 5. 发明授权
    • Mobile communications stations methods and systems
    • 移动通信站方法和系统
    • US07102570B2
    • 2006-09-05
    • US10508297
    • 2003-03-03
    • David Bar-OnMark ShahafSalomon SerfatyBaruh Hason
    • David Bar-OnMark ShahafSalomon SerfatyBaruh Hason
    • G01S3/02
    • H04W64/00G01S5/0072G01S5/0205G01S5/06
    • A method for use in a mobile communication system for estimating the location of a target mobile station (MS) which includes receiving signals from the target MS (N) at a plurality of receivers (MS1, MS2, MS3) in different locations and calculating the location of the target MS (N) from information obtained from the received signals, wherein at least one of the receivers (MS1) is a searching MS and wherein the calculation of location is carried out by the searching MS (MS1). The method may involve the target MS and the searching MS or MSs communicating by a direct mode of operation (DMO) link. The searching MSs may conveniently have GPS attachments. A mobile station which may be used as the target MS or as a searching MS and a system incorporating the same is also disclosed.
    • 一种在移动通信系统中用于估计目标移动站(MS)的位置的方法,其包括在不同位置的多个接收机(MS 1,MS 2,MS 3)处从目标MS(N)接收信号 以及从所述接收信号获得的信息中计算所述目标MS(N)的位置,其中,所述接收机(MS 1)中的至少一个是搜索MS,并且其中所述位置的计算由所述搜索MS(MS 1 )。 该方法可以涉及目标MS和通过直接操作模式(DMO)链路进行通信的搜索MS或MS。 搜索MS可以方便地具有GPS附件。 还可以公开可以用作目标MS或搜索MS的移动站以及包括其的系统。
    • 6. 发明授权
    • Digital speech processing system
    • 数字语音处理系统
    • US06420986B1
    • 2002-07-16
    • US09630755
    • 2000-08-02
    • Mark ShahafIzak AvayuAviad Cohen
    • Mark ShahafIzak AvayuAviad Cohen
    • H03M162
    • H03M1/183
    • In a speech processing system (10) characterized by a finite range of audio levels, the speech processing system (10) receiving an incoming audio signal, the speech processing system amplifying (12) the incoming audio signal by an audio gain factor, the speech processing system (10) representing the amplified audio signal by the finite range of audio levels, a method for adjusting the audio gain factor, including the steps of: decreasing the audio gain factor when detecting clipping of the amplified audio signal, maintaining the audio gain factor for a hold time period, and increasing the gain factor when detecting that the result of amplification of the incoming sound levels by the audio gain factor, is lower than the highest level of the finite range of audio levels.
    • 在以音频电平有限范围为特征的语音处理系统(10)中,语音处理系统(10)接收输入音频信号,语音处理系统通过音频增益因子放大(12)输入音频信号,语音 处理系统(10),其通过音频电平的有限范围表示放大的音频信号,一种用于调整音频增益因子的方法,包括以下步骤:当检测到放大的音频信号的限幅时,降低音频增益因子,保持音频增益 并且当检测到音频增益因子对输入声音电平的放大结果的结果低于音频电平的有限范围的最高电平时,增加增益因子。
    • 8. 发明申请
    • USING A PUSH TO TALK OVER CELLULAR INFRASTRUCTURE FOR RADIO COMMUNICATIONS
    • 使用推动无线电通信的细胞基础设施
    • US20130029714A1
    • 2013-01-31
    • US13190768
    • 2011-07-26
    • Eitan KorenGalina KorkhinMark ShahafAbraham Tooba
    • Eitan KorenGalina KorkhinMark ShahafAbraham Tooba
    • H04W4/10
    • H04W4/10
    • At least one subscriber unit (SU) (110) can register with a radio frequency (RF) site (120) for radio services. For each registered SU, a SU push to talk over cellular (PoC) client (342-346) can be activated/established. Communications can be mapped at the RF Site (120) between each registered SU (110) and a corresponding SU PoC client (342-346). Each SU PoC client (342-346) at the RF site (120) can be communicatively linked to a remotely located PoC server (132) using a PoC interface (226). The SU PoC client (342-346) is a communication endpoint of the PoC server (132). In one embodiment, a talkgroup PoC client (350-352) can be established at the RF site (120) that is linked to the PoC server (132). Radio communications to and from the SU (110) can be routed through the SU PoC client (342-346) and/or the talkgroup PoC client (350-352) and through the PoC server (132).
    • 至少一个用户单元(SU)(110)可以向无线电服务的射频(RF)站点(120)注册。 对于每个已注册的SU,可以激活/建立SU蜂窝通信(PoC)客户端(342-346)。 可以在每个注册的SU(110)和相应的SU PoC客户端(342-346)之间的RF站点(120)处映射通信。 RF站点(120)处的每个SU PoC客户端(342-346)可以使用PoC接口(226)通信地链接到位于远程的PoC服务器(132)。 SU PoC客户端(342-346)是PoC服务器(132)的通信端点。 在一个实施例中,可以在链接到PoC服务器(132)的RF站点(120)处建立通话组PoC客户端(350-352)。 可以通过SU PoC客户端(342-346)和/或通话组PoC客户端(350-352)和通过PoC服务器(132)来路由到来自SU(110)的无线电通信。
    • 9. 发明授权
    • Telephone apparatus and a communication method using such apparatus
    • US07212841B2
    • 2007-05-01
    • US10477278
    • 2002-05-13
    • Mark ShahafBoaz Or-ShragaIzak Avayu
    • Mark ShahafBoaz Or-ShragaIzak Avayu
    • H04M1/00
    • H04M9/08
    • In accordance with a first aspect of the present invention there is provided a telephone apparatus including a transmitter portion and a receiver portion, an input transducer for converting input audio signals into electrical signals, a connectable input link between the input transducer and the transmitter portion to deliver when connected an input electrical signal to the transmitter portion to be transmitted by the transmitter portion, an output transducer for converting an output electrical signal into an audio signal and a connectable output link between the receiver portion and the output transducer for delivering when connected an output signal to the output transducer, optionally an echo cancellation circuitry portion adapted to sample the output signal and produce an echo replica signal, optionally a mixer included in the input link for mixing an echo replica signal produced by the echo cancellation circuit with an input signal produced by the input transducer, and an echo suppression circuitry portion including detector means for producing a first magnitude signal which represents a magnitude property of a first sample of an output signal So in the output link and a second magnitude signal which represents a magnitude property of a second sample of an input electrical signal Si in the input link between the mixer and the transmitter portion, an analyzer, connected to receive inputs comprising the first and second magnitude signals from the detector means, for measuring a relationship between the first and second magnitude signals and for producing a control signal when the relationship exceeds a threshold, wherein the detector means is operable periodically to analyse characteristics of the signal So to estimate the amount of background noise in the signal So and to pass as an input to the analyzer a signal representing the estimated amount of backgroudn noise wherein the threshold above which the analyzer produces an output control signal is set adaptively by the analyzer dependent on the estimated background noise.