会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 11. 发明授权
    • Apparatus and method for grouping carriers to minimize the occurrence of call blocking in a satellite-based communications network
    • 用于分组载波以最小化基于卫星通信网络中的呼叫阻塞的发生的装置和方法
    • US06332069B1
    • 2001-12-18
    • US09244970
    • 1999-02-10
    • Wei ZhaoSteven ArnoldAnthony NoerpelDave Roos
    • Wei ZhaoSteven ArnoldAnthony NoerpelDave Roos
    • H04B7185
    • H04B7/2041H04B7/18539
    • An apparatus and method, for use in a satellite-based communications network, for minimizing blocking of communication between the network and access terminals resulting from differences in the signal propagation delays for the access terminals due to their different locations within a coverage area serviced by a spot beam generated by a satellite in the network. The apparatus includes a spot beam segregator which segregates a coverage area of the spot beam into at least one coverage zone based on the maximum and minimum propagation delay experienced by access terminals within the coverage area of the spot beam. The apparatus further includes a carrier grouper which groups the carrier into a number of groups corresponding to the number of offset zones, and assigns each carrier group to a respective one of the coverage zones. The number of carriers assigned to each carrier group is proportional to the estimated number of access terminals located in the respective coverage zone to which the carrier group is assigned. The apparatus assigns a respective burst offset to each respective coverage zone so that signals being transmitted by the satellite and access terminals within the coverage zone are transmitted in accordance with the same burst offset. Accordingly, burst signals are arranged efficiently in the TDMA time frames being transmitted over the carriers between the satellite and access terminals, which therefore minimizes call blocking.
    • 一种在基于卫星的通信网络中使用的装置和方法,用于最小化因接入终端的信号传播延迟的差异导致的网络与接入终端之间的通信阻塞,这是由于它们在由 由网络中的卫星产生的点波束。 该装置包括点波束分离器,其基于点波束覆盖区域内的接入终端经历的最大和最小传播延迟,将点波束的覆盖区域分离成至少一个覆盖区域。 该装置还包括载波分组器,其将载波分组成与偏移区域的数量相对应的多个组,并且将每个载波组分配给相应的一个覆盖区域。 分配给每个载波组的载波的数量与位于分配了载波组的相应覆盖区域中的接入终端的估计数成正比。 该装置为每个相应的覆盖区域分配相应的突发偏移,使得由覆盖区域内的卫星和接入终端发送的信号根据相同的突发偏移发送。 因此,在卫星和接入终端之间的载波上发送的TDMA时间帧中有效地布置突发信号,从而使呼叫阻塞最小化。
    • 12. 发明授权
    • Mobile satellite system and method for implementing a single-hop terminal-to-terminal call
    • 移动卫星系统及实现单跳终端呼叫的方法
    • US06314290B1
    • 2001-11-06
    • US09247847
    • 1999-02-11
    • Chandra JoshiAnthony NoerpelChi-Jiun SuDave Roos
    • Chandra JoshiAnthony NoerpelChi-Jiun SuDave Roos
    • H04Q720
    • H04B7/18558
    • A mobile satellite (MSAT) system is provided for establishing a single-hop terminal-to-terminal call between two terminals. The MSAT system maintains a signaling path between each terminal and a gateway station during the terminal-to-terminal call although a call path between the mobile switching center and the originating terminal is blocked by the satellite. During single-hop call establishment, satellite channels for the terminal-to-terminal call path and for signaling are allocated. The allocated channels are assigned when a direct satellite link for the terminal-to-terminal call is established; otherwise, the call can proceed as a double-hop call using previously assigned satellite channels. A verification signal is sent on the direct satellite link which is for processing by the terminals and which contains information that causes the signal to be ignored by a gateway station. During a single-hop terminal-to-terminal call, signaling from a destination gateway station to an originating terminal at another gateway station is sent via an intranetwork communication system connecting traffic control subsystems in different gateway stations and the satellite channels allocated to the originating terminal
    • 提供移动卫星(MSAT)系统,用于在两个终端之间建立单跳终端到终端呼叫。 尽管移动交换中心和始发终端之间的呼叫路径被卫星阻挡,但在终端到终端呼叫期间,MSAT系统维护每个终端与网关站之间的信令路径。 在单跳呼叫建立期间,分配用于终端到终端呼叫路径和信令的卫星信道。 当终端到终端呼叫的直接卫星链路建立时,分配的信道被分配; 否则,呼叫可以使用以前分配的卫星信道作为双跳呼叫进行。 在由终端进行处理的直接卫星链路上发送验证信号,其中包含导致信号被网关站忽略的信息。 在单跳终端到终端呼叫中,通过连接不同网关站中的业务控制子系统和分配给始发终端的卫星信道的内网通信系统来发送从目的地网关站到另一个网关站的始发终端的信令
    • 17. 发明授权
    • In-call DTMF transport for geostationary mobile satellite communication system
    • 用于对地静止移动卫星通信系统的通话DTMF传输
    • US06650895B1
    • 2003-11-18
    • US09447696
    • 1999-11-23
    • Channasandra RavishankarDavid RoosAnthony NoerpelChandra JoshiJames HobzaPrabir DattaYi Chen
    • Channasandra RavishankarDavid RoosAnthony NoerpelChandra JoshiJames HobzaPrabir DattaYi Chen
    • H04Q720
    • H04B7/19H04M3/2281H04M3/533H04Q1/45
    • A system and a methodology to improve the end-user quality of service both in terms of response time and reliability for the transport of in-call DTMF signals in wireless systems, particularly in geostationary mobile satellite systems. The methodology encompasses several techniques to provide acceptable end-to-end quality of service for DTMF. A technique is applicable for transport of DTMF in the wireless subscriber to network direction, where DTMF digits are carried in the form of an out-band message. The central part of the technique is to allow multiple key presses in the same message, thereby increasing efficiency and throughput in long-delay environment. Another technique utilizes the vocoder's functionality to carry DTMF in-band, thereby reducing system complexity. The scheme makes the use of an integrated DTMF detector which can classify a given frame of signal into several classes so that the DTMF encoded packet can carry a unique pattern across the air-interface to the voice decoder at AT, which is capable of identifying the pattern. Another technique pertains to the use of a message based DTMF transport between two-ATs on a separate logical channel with a unique Service Access point Identifier (SAPI) providing guaranteed service for DTMF transport in an AT-AT call.
    • 在无线系统,特别是对地静止移动卫星系统中,在无线系统中传输呼叫中的DTMF信号的响应时间和可靠性方面,提高最终用户服务质量的系统和方法。 该方法包括几种为DTMF提供可接受的端到端服务质量的技术。 一种技术适用于将无线用户中的DTMF传输到网络方向,其中DTMF数字以带外消息的形式携带。 该技术的核心部分是允许同一消息中的多个按键按压,从而在长时间延迟环境中提高效率和吞吐量。 另一种技术利用声码器的功能来携带DTMF带内,从而降低系统的复杂性。 该方案使用集成的DTMF检测器,其可以将给定的信号帧分类成多个等级,使得DTMF编码的分组可以在AT的语音解码器的空中接口上携带唯一的模式,其能够识别 模式。 另一种技术涉及在独立的逻辑信道上的两个AT之间使用基于消息的DTMF传输与唯一的服务接入点标识符(SAPI),其在AT-AT呼叫中为DTMF传输提供有保证的服务。
    • 18. 发明授权
    • Apparatus and method for delivering key information of a channel request message from a user terminal to a network
    • 一种从用户终端向网络传送信道请求消息的密钥信息的装置和方法
    • US06249677B1
    • 2001-06-19
    • US09247849
    • 1999-02-11
    • Anthony NoerpelChandra JoshiStephanie Demers
    • Anthony NoerpelChandra JoshiStephanie Demers
    • H04Q720
    • H04B7/18558H04B7/2125
    • An apparatus and method, for use with the satellite-based communications network, for improving the reliability and speed at which communication between a user terminal and the network is established. The apparatus and method arranges data of a channel request message transmitted from a user terminal to a satellite in the satellite-based network to insure that the most critical data for establishing communication between the user terminal and the satellite-based network is received at the satellite during the appropriate receiving time frame window. The channel request message includes a first data group necessary for establishing a communication link for which information is transmitted between the apparatus and the network, and a second data group including information for decreasing the amount time necessary to establish the communication link. The first data group is positioned at the center of the channel request message, with portions of the second data group at opposite ends of the channel request message. The time at which the user terminal transmits the channel request message is set based on a location of the apparatus within a spot beam, to take into account the appropriate propagation delay time for the message to travel from the apparatus to the satellite in the network, thus assuring that at least the first data group of the channel request message is received at the satellite during an appropriate receiving time frame window.
    • 一种用于卫星通信网络的设备和方法,用于提高用户终端和网络之间的通信建立的可靠性和速度。 该装置和方法将从用户终端发送的信道请求消息的数据排列到基于卫星的网络中的卫星,以确保在卫星接收用于建立用户终端和基于卫星的网络之间的通信的最关键数据 在适当的接收时间窗口。 信道请求消息包括建立用于在装置和网络之间传送信息的通信链路所需的第一数据组,以及包括用于减少建立通信链路所需的时间量的信息的第二数据组。 第一数据组位于信道请求消息的中心,第二数据组的部分位于信道请求消息的相对端。 用户终端发送信道请求消息的时间是基于点光束内的设备的位置来设置的,以考虑消息从设备行进到网络中的卫星的适当的传播延迟时间, 从而确保在适当的接收时间窗口期间至少在卫星处接收信道请求消息的第一数据组。