Automatic media switching apparatus and method
    1.
    发明授权
    Automatic media switching apparatus and method 失效
    自动介质切换装置及方法

    公开(公告)号:US06137802A

    公开(公告)日:2000-10-24

    申请号:US827014

    申请日:1997-03-25

    Abstract: A media switching apparatus automatically switches a user device between wired and wireless service mediums of communications networks. The switching apparatus includes a protocol stack having a network layer, a logical link control, a first set of lower layers specific to a wired service medium and a second set of lower layers specific to a wireless service medium. A selector is responsive to the availability of a wired service medium for selecting the first set of lower layers and is further responsive to the non-availability of a wired service medium and the availability of a wireless service medium for selecting the second set of lower layers.

    Abstract translation: 媒体交换设备在通信网络的有线和无线服务介质之间自动切换用户设备。 交换装置包括具有网络层,逻辑链路控制,特定于有线服务介质的第一组较低层的协议栈和对于无线服务介质特有的第二组较低层。 选择器响应于有线服务介质的可用性来选择第一组较低层,并且还响应于有线服务介质的不可用性以及用于选择第二组较低层的无线服务介质的可用性 。

    Method, subscriber device, wireless router, and communication system efficiently utilizing the receive/transmit switching time
    2.
    发明授权
    Method, subscriber device, wireless router, and communication system efficiently utilizing the receive/transmit switching time 有权
    方法,用户设备,无线路由器和有效利用接收/发送切换时间的通信系统

    公开(公告)号:US06490256B1

    公开(公告)日:2002-12-03

    申请号:US09543277

    申请日:2000-04-05

    CPC classification number: H04W72/1257 H04L5/1469 H04W72/1284

    Abstract: The present invention provides a subscriber device (10), method (1000, 1500), wireless router (30), and communication system (100). The communication system (100) includes at least one subscriber device (10) having a message generator (1612) for generating a message which includes an indicator of a receive/transmit switching time, and the wireless router (30) for communicating with at least one subscriber device, the wireless router having a scheduler (902), optimizer (904), and an allocation map generator (906), wherein the wireless router (30) prepares an efficient and optimized channel allocation map for transmission to the subscriber device (10) taking into account the indicator of the receive/transmit switching time for the subscriber device (10) and wherein the map indicates at least one allocated transmit time, in a form of a block, having a beginning and an end, for transmission by the subscriber device following a receive time.

    Abstract translation: 本发明提供一种用户设备(10),方法(1000,1500),无线路由器(30)和通信系统(100)。 通信系统(100)包括至少一个订户设备(10),其具有用于生成包括接收/发送切换时间的指示符的消息的消息生成器(1612),以及至少与所述无线路由器(30)进行通信的无线路由器 一个订户设备,具有调度器(902),优化器(904)和分配映射生成器(906)的无线路由器,其中所述无线路由器(30)准备有效且优化的信道分配映射以便传输到订户设备 10)考虑到用户设备(10)的接收/发送切换时间的指示符,并且其中,映射以块的形式指示具有开始和结束的至少一个分配的发送时间,用于通过 用户设备接收到接收时间。

    Method, subscriber device, wireless router, and communication system
efficiently utilizing the receive/transmit switching time

    公开(公告)号:US6108314A

    公开(公告)日:2000-08-22

    申请号:US143714

    申请日:1998-08-31

    CPC classification number: H04W72/1257 H04L5/1469 H04W72/1284

    Abstract: The present invention provides a subscriber device (10), method (1000, 1500), wireless router (30), and communication system (100). The communication system (100) includes at least one subscriber device (10) having a message generator (1612) for generating a message which includes an indicator of a receive/transmit switching time, and the wireless router (30) for communicating with at least one subscriber device, the wireless router having a scheduler (902), optimizer (904), and an allocation map generator (906), wherein the wireless router (30) prepares an efficient and optimized channel allocation map for transmission to the subscriber device (10) taking into account the indicator of the receive/transmit switching time for the subscriber device (10) and wherein the map indicates at least one allocated transmit time, in a form of a block, having a beginning and an end, for transmission by the subscriber device following a receive time.

    Method and apparatus for transparently multicasting identical data streams originating from different or common sources
    4.
    发明授权
    Method and apparatus for transparently multicasting identical data streams originating from different or common sources 失效
    用于透明地组播来自不同或共同来源的相同数据流的方法和装置

    公开(公告)号:US06512776B1

    公开(公告)日:2003-01-28

    申请号:US09097337

    申请日:1998-06-15

    Abstract: A first data stream (26) requested by a first client (1) is received at a router (16). A second data stream (24) requested by a second client (2) is also received at the router (16). The router (16) determines that the first data stream (26) and the second data stream (24) are identical. The router (16) multicasts the first data stream (26) and the second data stream (24) into a single multicast data stream (28). The single multicast data stream (28) is transmitted to the first client (1) and to the second client (2).

    Abstract translation: 在路由器(16)处接收由第一客户端(1)请求的第一数据流(26)。 在第二客户端(2)请求的第二数据流(24)也在路由器(16)处被接收。 路由器(16)确定第一数据流(26)和第二数据流(24)是相同的。 路由器(16)将第一数据流(26)和第二数据流(24)组播成单个组播数据流(28)。 单个组播数据流(28)被发送到第一客户端(1)和第二客户端(2)。

    Method and system for maintaining a guaranteed quality of service in
data transfers within a communications system
    6.
    发明授权
    Method and system for maintaining a guaranteed quality of service in data transfers within a communications system 失效
    在通信系统内的数据传输中保持服务质量的方法和系统

    公开(公告)号:US5903558A

    公开(公告)日:1999-05-11

    申请号:US672709

    申请日:1996-06-28

    CPC classification number: H04L12/2898 H04L12/2861

    Abstract: A cable telephony system (100) including a plurality of subscriber units (104) connected to a head-end (102) by a cable distribution network (106) in which upstream and downstream data transmissions are sent between subscribers (104) and head-end (102). Both shared and unshared connections are supported within cable telephony system (100). Transmission between a subscriber (104) and head-end (102) may involve both a shared and unshared connection in which unshared connections are employed to provide a higher quality of service when the shared connection is unable to do so.

    Abstract translation: 一种有线电话系统(100),包括由电缆分配网络(106)连接到前端(102)的多个用户单元(104),其中在订户(104)和头端(104)之间发送上游和下游数据传输, 结束(102)。 有线电话系统(100)支持共享和非共享连接。 订户(104)和前端(102)之间的传输可以涉及共享连接和非共享连接,其中当共享连接不能这样做时,使用非共享连接来提供更高质量的服务。

    Method and apparatus for the time synchronization in a data communication system

    公开(公告)号:US07120170B2

    公开(公告)日:2006-10-10

    申请号:US10027045

    申请日:2001-12-20

    CPC classification number: H04N21/647 H04N21/4305

    Abstract: A common clock shared by two or more nodes within a network used for time-synchronization. The nodes communicate via a packetized data transmission. Each data packet has a header with a value. The clock includes a first timing portion that includes at least two data packets where the value is constant for each data packet, and a second timing portion that includes at least two data packets where the value is constant for each data packet but different from the value of the data packets in the first timing portion. Alternatively, the clock includes a first timing portion that includes at least two data packets where the value changes with each data packet, and one or more subsequent timing portions each including at least two data packets where the value is constant for each data packet within a subsequent timing portion but changes with each of the subsequent timing portions.

    Communication network with a collection gateway and method for providing surveillance services
    8.
    发明授权
    Communication network with a collection gateway and method for providing surveillance services 有权
    具有收集网关的通信网络和提供监控服务的方法

    公开(公告)号:US07006508B2

    公开(公告)日:2006-02-28

    申请号:US09827224

    申请日:2001-04-05

    CPC classification number: H04M3/2281 H04M7/006

    Abstract: A communication network (10) utilized for providing communications between a first party and a second party includes a surveillance server (26) within a core network (10) to provide communication surveillance capability. The core network (10) may be a packet data network, and the surveillance server (26) is operable responsive to trigger information to establish communications surveillance. Communication surveillance may be established by creating duplicate bearer packets of those data packets carrying the communicated data between the parties, creating duplicate control packets of those data packets carrying in-band or out-of-band call control information between the parties and within the packet data network, and/or various combinations thereof. The duplicate bearer packets and the duplicate control packets are routed to appropriate authorized law enforcement agencies for providing surveillance.

    Abstract translation: 用于在第一方和第二方之间提供通信的通信网络(10)包括核心网络(10)内的监视服务器(26),以提供通信监视能力。 核心网络(10)可以是分组数据网络,并且监视服务器(26)可响应于触发信息来建立通信监视。 可以通过在各方之间创建承载传送数据的数据包的重复承载分组来建立通信监控,从而创建双方之间和分组内承载带内或带外呼叫控制信息的那些数据分组的重复控制分组 数据网络和/或其各种组合。 重复的承载分组和重复的控制分组被路由到适当的授权执法机构进行监视。

    Voice over internet protocol telephone system and method
    9.
    发明授权
    Voice over internet protocol telephone system and method 有权
    语音互联网协议电话系统和方法

    公开(公告)号:US06404764B1

    公开(公告)日:2002-06-11

    申请号:US09618376

    申请日:2000-07-18

    Abstract: An Internet Protocol telephone system and method uses a telephone (26) to place and receive voice over Internet Protocol (VoIP)-based telephone calls and public switched telephone network (PSTN)-based telephone calls. An off-hook condition with the telephone (26) is detected and a sequence of signals generated by the telephone (26) is received. At least a first signal generated by the telephone (26) is buffered while the system attempts to detect a predetermined signal that signifies a VoIP-based call. Upon detection of the predetermined signal, the system intercepts subsequent signals in the sequence, absent the at least first signal that was buffered, and places the VoIP-based call via an internet (12). Otherwise, the system places the PSTN-based call via a PSTN (16).

    Abstract translation: 互联网协议电话系统和方法使用电话(26)基于互联网协议(VoIP)的电话呼叫和基于公共交换电话网(PSTN)的电话呼叫来发出和接收语音。 检测到与电话(26)的摘机状态,并接收由电话(26)产生的一系列信号。 当系统尝试检测到表示基于VoIP的呼叫的预定信号时,缓冲由电话(26)产生的至少第一信号。 在检测到预定信号时,系统在没有被缓冲的至少第一个信号的情况下拦截该序列中的后续信号,并且经由互联网(12)放置基于VoIP的呼叫。 否则,系统通过PSTN(16)放置基于PSTN的呼叫。

Patent Agency Ranking