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    • 8. 发明授权
    • Cellular telephone interface system for AMPS and CDMA data services
    • 用于AMPS和CDMA数据业务的蜂窝电话接口系统
    • US5956651A
    • 1999-09-21
    • US723493
    • 1996-09-30
    • James J. WillkieMarc S. PhillipsDavid B. Doan
    • James J. WillkieMarc S. PhillipsDavid B. Doan
    • H04B7/26H04M11/00H04M11/06H04W88/02H04Q7/32
    • H04W88/02Y02B60/50
    • The cellular telephone interface system has the capability to automatically choose between AMPS and CDMA cellular transmission protocols for data transmissions. The cellular telephone interface system includes a PC-modem card, such as a PCMCIA card, for interconnecting the cellular telephone to a data source, such as a laptop computer, portable facsimile machine, or the like. The cellular telephone is capable of transmission in accordance with either AMPS or CDMA transmission protocols. For AMPS, the PC-modem card converts data signals received from the data source into PCM signals for forwarding to the cellular telephone. The cellular telephone converts the PCM signals into AMPS formatted signals for transmission to a local cellular base station. For CDMA transmission, the PC-modem card converts the data signals received from the data source into RS-232E signals for transmission to the cellular telephone. The cellular telephone converts the RS-232E signals into CDMA formatted signals for transmission to the local base station. A variety of data formatting and data compressing protocols are also provided including TCP, IP, PPP and V42.bis. In one embodiment, hardware and software for implementing the protocols are provided primarily within the PC-modem card to thereby reduce the cost, size and power consumption of the cellular telephone itself. In another embodiment, hardware and software for implementing the TCP, IP and PPP protocols are provided within the cellular telephone. Method and apparatus embodiments of the invention are disclosed.
    • 蜂窝电话接口系统具有在AMPS和CDMA蜂窝传输协议之间自动选择用于数据传输的能力。 蜂窝电话接口系统包括用于将蜂窝电话与诸如膝上型计算机,便携式传真机等数据源互连的PC调制解调器卡,例如PCMCIA卡。 蜂窝电话能够根据AMPS或CDMA传输协议进行传输。 对于AMPS,PC调制解调器卡将从数据源接收的数据信号转换成PCM信号以转发到蜂窝电话。 蜂窝电话将PCM信号转换成AMPS格式的信号,以便传输到本地蜂窝基站。 对于CDMA传输,PC调制解调器卡将从数据源接收的数据信号转换为RS-232E信号以传输到蜂窝电话。 蜂窝电话将RS-232E信号转换成CDMA格式的信号,以传输到本地基站。 还提供了各种数据格式和数据压缩协议,包括TCP,IP,PPP和V42.bis。 在一个实施例中,用于实现协议的硬件和软件主要提供在PC调制解调器卡内,从而降低蜂窝电话本身的成本,尺寸和功耗。 在另一个实施例中,用于实现TCP,IP和PPP协议的硬件和软件在蜂窝电话内提供。 公开了本发明的方法和装置实施例。
    • 9. 发明授权
    • Fast circuit switched data architecture and method
    • 快速电路交换数据架构及方法
    • US06400712B1
    • 2002-06-04
    • US09085323
    • 1998-05-26
    • Marc S. Phillips
    • Marc S. Phillips
    • H04L1266
    • H04W92/02
    • An efficient method and architecture for transferring packetized digital data over a circuit switched data network. On packet data calls, the receiving entity initially identifies the packetized data call as being of the circuit switched variety, thereby permitting further processing of the call using circuit switched infrastructure. Based on identification information embedded in the received data packets, the receiving entity subsequently identifies the call as being a packet data format, and routes the payload packet data to the upper layers of the protocol stack of the receiving entity. The network layer then routes the packet data directly to the connected data network (such as the internet), bypassing normal circuit switched call processing. Accordingly, infrastructure not equipped to handle packet data can be made to do so in an efficient and reliable manner, using only existing cellular service options and a unified interworking function (IWF) module. Mobile unit dormancy is supported on mobile-terminated packet data calls through the use of a second existing cellular service option for paging and call identification.
    • 一种用于通过电路交换数据网络传送分组数字数据的有效方法和架构。 在分组数据呼叫中,接收实体首先将分组化数据呼叫识别为电路交换种类,从而允许使用电路交换基础设施进一步处理呼叫。 基于嵌入在接收到的数据分组中的识别信息,接收实体随后将该呼叫识别为分组数据格式,并将有效载荷分组数据路由到接收实体的协议栈的上层。 网络层然后将分组数据直接路由到连接的数据网络(例如因特网),绕过正常的电路交换呼叫处理。 因此,可以使用仅使用现有蜂窝服务选项和统一互通功能(IWF)模块,以有效和可靠的方式来实现处理分组数据的基础设施。 通过使用第二个现有的蜂窝服务选项进行寻呼和呼叫识别,移动终端分组数据呼叫支持移动单元休眠。
    • 10. 发明授权
    • System method and computer program product for eliminating unnecessary
retransmissions
    • 系统方法和计算机程序产品,用于消除不必要的重传
    • US6118765A
    • 2000-09-12
    • US6685
    • 1998-01-13
    • Marc S. Phillips
    • Marc S. Phillips
    • H04L1/18H04L12/28H04L12/801G06F11/00
    • H04L47/10H04L1/1838H04W28/06
    • A system, method and computer program product for preventing unnecessary retransmissions from being sent from a terminal such as, for example, an internet host computer, on a slow link. A slow link TCP optimizer receives data packets from a host computer and determines, based on an estimated round trip time, whether a data packet is a new data packet, a valid retransmitted data packet or an unnecessary retransmitted data packet. New data packets and valid retransmitted data packets are forwarded over the slow link to a remote terminal. Unnecessary retransmitted data packets are discarded. The estimating a round trip time is determined as the time it takes for a data packet to travel from the present invention to the remote terminal and for an acknowledgment of receipt to travel from the remote terminal back to the present invention. The estimated round trip time includes throughput latency that results from a slow link. The slow link TCP optimizer does not affect data packets that are sent from a host computer that properly accounts for a slow link when determining a round trip time.
    • 一种用于在慢速链路上防止从例如因特网主机的终端发送不必要的重传的系统,方法和计算机程序产品。 慢链路TCP优化器从主机接收数据分组,并且基于估计的往返时间确定数据分组是新数据分组,有效重传数据分组还是不必要的重传数据分组。 新的数据分组和有效重传的数据分组通过慢速链路转发到远程终端。 不必要的重传数据包被丢弃。 估计往返时间被确定为数据分组从本发明行进到远程终端所需的时间,以及从远程终端返回到本发明的接收确认。 估计的往返时间包括由慢速链接导致的吞吐量延迟。 慢速链接TCP优化器不会影响在确定往返时间时正确计算慢速链接的主机计算机发送的数据包。