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公开(公告)号：US5440545A
公开(公告)日：1995-08-08
申请号：US100403
申请日：1993-08-02
CPC分类号： H04L47/34 , H04L1/1614 , H04L1/1809 , H04L29/06 , H04L1/1854 , H04L69/324
摘要： A packet switching system (100) having a packet switch (140) employs an acknowledgement scheme in order assure the delivery of all fragments (310) comprising a fragmented data packet (300) to improve overall system throughput during the handling of packets (310) that require reassembly. When packet fragments (310) are lost, corrupted or otherwise unintelligible to a receiving device (92, 94), the acknowledgement scheme permits retransmission of the missing data. In addition, a second acknowledgment signal is scheduled by system processing resources (110) in order to verify the successful delivery of all retransmitted data.
摘要翻译： 具有分组交换机（140）的分组交换系统（100）采用确认方案，以便确保包括分段数据分组（300）的所有分段（310）的传递，以在处理分组（310）期间改善总体系统吞吐量 需要重新组装。 当分组片段（310）丢失，损坏或以其它方式对于接收设备（92,94）不了解时，确认方案允许丢失数据的重传。 另外，由系统处理资源（110）调度第二确认信号，以验证所有重发数据的成功传送。
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2.发明授权
公开(公告)号：US5555266A
公开(公告)日：1996-09-10
申请号：US131358
申请日：1993-10-04
CPC分类号： H04L47/10 , H04L1/1614 , H04W72/044 , H04W28/14 , H04W72/042 , H04W74/004
摘要： A packet transmission system (100) with reduced transmission delays includes a communications controller (110) and a plurality of remote requesting units (112) requesting packet transmission services. Each remote unit (112) sequentially stores transmitted access requests (302) in a memory queue (500) and awaits a resource grant (306) from the communications controller (110). Upon receipt of a granted resource the remote unit (112) will apply the granted resource to the oldest request (502) stored in the queue (500) in order to transmit data (310) to the communications controller (110). A separate and distinct aspect of the transmission system (100) resides within the communications controller (110). In response to the receipt of a data packet (310) from a remote unit (112), the communications controller (110) identifies missing data within the data packet transmission, determines whether communication resources are available to support retransmission of the missing data, and if so, transmits a response to the requesting remote unit identifying the missing data and simultaneously granting sufficient resources for retransmission of the missing data.
摘要翻译： 具有减少的传输延迟的分组传输系统（100）包括通信控制器（110）和请求分组传输服务的多个远程请求单元（112）。 每个远程单元（112）顺序地将发送的访问请求（302）存储在存储器队列（500）中，并且等待来自通信控制器（110）的资源准许（306）。 在接收到授权资源之后，远程单元（112）将所授予的资源应用于存储在队列（500）中的最早的请求（502），以便将数据（310）发送到通信控制器（110）。 传输系统（100）的单独和不同的方面位于通信控制器（110）内。 响应于从远程单元（112）接收到数据分组（310），通信控制器（110）识别数据分组传输中的丢失数据，确定通信资源是否可用于支持丢失数据的重传，以及 如果是，则向请求的远程单元发送识别丢失的数据的响应，并同时授予足够的资源用于重传丢失的数据。
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3.发明授权Method and apparatus for preserving packet squencing in a packet transmission system 失效用于在分组传输系统中保持分组排序的方法和装置
公开(公告)号：US5337313A
公开(公告)日：1994-08-09
申请号：US975360
申请日：1992-11-12
CPC分类号： H04Q11/0478 , H04L2012/5616 , H04L2012/565
摘要： A method and apparatus for preserving the sequential relationship of a plurality of data packets 310 generated by separate source devices 14 and ordered as a data stream 300, despite transmission over radio channels which introduce ordering errors comprises method steps and apparatus structure for identifying at a first terminal, data packets from within the data stream as a function of source, generating data packet sequence information for identified data packets, storing values corresponding to data packet sequence numbers as a function of source and transmitting data packets, source device identity and packet sequence information to a second terminal having first terminal source device and data packet sequence information. Upon receipt of a first terminal transmission, the second terminal retrieves from second terminal memory, first terminal data packet sequence information and compares the stored data packet sequence information with received data packet sequence information. As a function of the comparison, received data packets are forwarded to an appropriate application for further processing when sequence information sequence numbers compare and stored in an order determined by the sequence information when the sequence numbers do not compare.
摘要翻译： 尽管通过引入排序误差的无线电信道进行的传输，尽管通过无线电信道进行传输，用于保持由单独的源设备14生成并排序为数据流300的多个数据分组310的顺序关系的方法和装置包括方法步骤和装置结构， 终端，作为源的数据流内的数据分组，生成用于识别的数据分组的数据分组序列信息，存储与数据分组序列号对应的值作为源和发送数据分组的函数，源设备标识和分组序列信息 具有第一终端源设备和数据分组序列信息的第二终端。 在接收到第一终端传输时，第二终端从第二终端存储器检索第一终端数据分组序列信息，并将存储的数据分组序列信息与接收到的数据分组序列信息进行比较。 作为比较的功能，当序列号不比较时，当序列信息序列号按照序列信息确定的顺序进行比较和存储时，接收到的数据分组被转发到适当的应用以进一步处理。
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4.发明授权Method and apparatus for reducing the likelihood of contention and resource misallocation in a packet transmission system 失效用于降低分组传输系统中竞争和资源错位的可能性的方法和装置
公开(公告)号：US5493569A
公开(公告)日：1996-02-20
申请号：US394939
申请日：1995-02-27
CPC分类号： H04W72/0406 , H04J3/1694 , H04L1/188 , H04L1/1854 , H04L1/1877 , H04W72/0413 , H04W72/042 , H04W74/08
摘要： A packet transmission system (100) for reducing request traffic contention and the likelihood of resource misallocation includes a communications controller (110) and a plurality of remote requesting units (112) requesting packet transmission services. In response to receipt of a request (302), the controller (110) transmits a grant (306) to a requesting unit (112) when packet transmission resources (304 & 310) are available or a request acknowledgment (306) when packet transmission resources (304 & 310) are unavailable. Each remote unit (112) comprise apparatus structure and method steps for transmitting requests (302) to the controller (110) and starting a first timer having an interval (T) determined as a function of a number (Q) of outstanding requests (302). Upon receipt of an acknowledgement (306), the remote unit (112) starts a second timer having an interval (T.sub.1) longer than the interval (T). Upon expiration of either the first timer or the second timer, the remote unit (112) will then and only then transmit a duplicate request (302). By limiting the number of duplicate requests transmitted by a remote unit (112), the present invention operates to reduce request traffic contention and the likelihood of resource misallocation.
摘要翻译： 用于减少请求业务争用和资源错位的可能性的分组传输系统（100）包括：请求分组传输服务的通信控制器（110）和多个远程请求单元（112）。 响应于接收到请求（302），当分组传输资源（304和310）可用时，控制器（110）向请求单元（112）发送许可（306），或者当分组传输 资源（304和310）不可用。 每个远程单元（112）包括用于向控制器（110）发送请求（302）并启动具有根据未完成请求的数量（Q）确定的间隔（T）的第一定时器的装置结构和方法步骤（302） ）。 在接收到确认（306）时，远程单元（112）启动具有比间隔（T）更长的间隔（T1）的第二定时器。 当第一定时器或第二定时器到期时，远程单元（112）然后将仅发送重复请求（302）。 通过限制由远程单元（112）发送的重复请求的数量，本发明操作以减少请求流量争用和资源错位的可能性。
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公开(公告)号：US5341375A
公开(公告)日：1994-08-23
申请号：US975452
申请日：1992-11-12
CPC分类号： H04L12/1836 , H04L12/189 , H04W28/06 , H04W4/06
摘要： Transmission of broadcast packets (46) in a radio frequency (RF) communication system between a control module (22) and user modules (20), wherein the control module (22) and the user modules (20) each have a plurality of antennae (A1-A6) includes generating a list (1100) of control module antennae (A1-A6) in radio communication with at least one of said plurality of user modules; and selecting the listed control module antennae for transmission of broadcast packets (46).
摘要翻译： 在控制模块（22）和用户模块（20）之间的射频（RF）通信系统中广播分组（46）的传输，其中控制模块（22）和用户模块（20）各自具有多个天线 （A1-A6）包括：与所述多个用户模块中的至少一个无线电通信产生控制模块天线（A1-A6）的列表（1100）; 以及选择所列出的用于传输广播分组的控制模块天线（46）。
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