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    • 5. 发明授权
    • Spurious timeout detection in TCP based networks
    • 基于TCP的网络中的伪超时检测
    • US07349978B2
    • 2008-03-25
    • US10758510
    • 2004-01-15
    • Kun TanHongbin LiaoChuanxiong GuoQian ZhangWenwu Zhu
    • Kun TanHongbin LiaoChuanxiong GuoQian ZhangWenwu Zhu
    • G06F15/16
    • H04L69/16H04L69/163
    • A method for detecting a spurious timeout in a TCP network which can be used to avoid unnecessarily triggering the TCP rate adaptation is disclosed. Upon detection of a timeout on a given packet, a shortened packet version of the possibly lost packet is retransmitted. The retransmitted packet is at least one byte shorter than the original packet. The node receiving this retransmitted packet will acknowledge the receipt of the packet as specified in the TCP protocol. The acknowledgment will contain the sequence number of the lowest byte the receiving node has not yet received. Because the retransmitted packet is shorter than the original packet, the sequence number of this as yet not received byte will be less than or equal to the last byte of the original packet if the original packet was not received indicating a valid timeout. If the sequence number in the acknowledgment is greater than the last byte of the original packet than the original packet was received correctly and the timeout was caused by a lost acknowledgment and is considered a spurious timeout. In the case of a spurious timeout the congestion control mechanisms in the TCP protocol need not be used.
    • 公开了一种用于检测可以用于避免不必要地触发TCP速率适配的TCP网络中的虚假超时的方法。 在检测到给定分组上的超时时,重传可能丢失的分组的缩短的分组版本。 重传的分组比原始分组短至少一个字节。 接收该重发分组的节点将确认在TCP协议中指定的分组的接收。 确认将包含接收节点尚未接收的最低字节的序列号。 由于重传的分组比原始分组短,因此未接收到的字节的序列号将小于或等于原始分组的最后一个字节,如果未收到指示有效超时的原始分组。 如果确认中的序列号大于原始数据包的最后一个字节,而不是原始数据包被正确接收,并且超时是由丢失的确认引起的,并且被认为是虚假超时。 在虚假超时的情况下,不需要使用TCP协议中的拥塞控制机制。
    • 8. 发明申请
    • Robust, inferentially synchronized transmission of compressed transport-layer-protocol headers
    • 压缩传输层协议报头的稳健的,同步的传输
    • US20050286523A1
    • 2005-12-29
    • US11203954
    • 2005-08-15
    • HongBin LiaoQian ZhangWenwu ZhuYa-Qin Zhang
    • HongBin LiaoQian ZhangWenwu ZhuYa-Qin Zhang
    • H04L12/56H04L29/06H04L29/08H04L12/28
    • H04L69/04H04L47/10H04L47/193H04L47/27H04L47/37H04L69/16H04L69/161H04L69/163H04L69/22H04L69/326
    • An implementation of a technology, described herein, for transmitting compressed network transport-layer-protocol headers in a speedy, efficient, inferentially synchronized, and robust manner. An implementation, described herein, models the transmission of compressed headers to the congestion procedure of the network transport-layer protocol (e.g., TCP's). Doing so, the sender of the compressed headers can infer whether the receiver correctly received them. Unlike the slow direct synchronization employed by conventional schemes, this implementation of the present claimed invention inferentially synchronizes by modeling after the congestion procedure of the network transport-layer protocol. This is inherently faster than direct synchronization. Since the implementation performs well over both noiseless and noisy links, it is particularly suited to use over wireless communications channels. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.
    • 本文描述的用于以快速,有效,同步和稳健的方式发送压缩网络传输层协议报头的技术的实现。 这里描述的实现将压缩报头的传输建模到网络传输层协议(例如,TCP)的拥塞过程。 这样做,压缩报头的发送者可以推断接收机是否正确接收到它们。 与常规方案所采用的慢速直接同步不同,本发明的实施方式在网络传输层协议的拥塞过程之后通过建模同步。 这本质上比直接同步更快。 由于实现在无声和噪声链路上表现良好,特别适用于无线通信信道。 本摘要本身并不旨在限制本专利的范围。 在所附权利要求中指出了本发明的范围。
    • 9. 发明申请
    • Spurios timeout detection in TCP based networks
    • 基于TCP的网络中的Spurios超时检测
    • US20050198350A1
    • 2005-09-08
    • US10758510
    • 2004-01-15
    • Kun TanHongbin LiaoChuanxiong GuoQian ZhangWenwu Zhu
    • Kun TanHongbin LiaoChuanxiong GuoQian ZhangWenwu Zhu
    • G06F15/16
    • H04L69/16H04L69/163
    • A method for detecting a spurious timeout in a TCP network which can be used to avoid unnecessarily triggering the TCP rate adaptation is disclosed. Upon detection of a timeout on a given packet, a shortened packet version of the possibly lost packet is retransmitted. The retransmitted packet is at least one byte shorter than the original packet. The node receiving this retransmitted packet will acknowledge the receipt of the packet as specified in the TCP protocol. The acknowledgment will contain the sequence number of the lowest byte the receiving node has not yet received. Because the retransmitted packet is shorter than the original packet, the sequence number of this as yet not received byte will be less than or equal to the last byte of the original packet if the original packet was not received indicating a valid timeout. If the sequence number in the acknowledgment is greater than the last byte of the original packet than the original packet was received correctly and the timeout was caused by a lost acknowledgment and is considered a spurious timeout. In the case of a spurious timeout the congestion control mechanisms in the TCP protocol need not be used.
    • 公开了一种用于检测可以用于避免不必要地触发TCP速率适配的TCP网络中的虚假超时的方法。 在检测到给定分组上的超时时,重传可能丢失的分组的缩短的分组版本。 重传的分组比原始分组短至少一个字节。 接收该重发分组的节点将确认在TCP协议中指定的分组的接收。 确认将包含接收节点尚未接收的最低字节的序列号。 由于重传的分组比原始分组短,因此未接收到的字节的序列号将小于或等于原始分组的最后一个字节,如果未收到指示有效超时的原始分组。 如果确认中的序列号大于原始数据包的最后一个字节,而不是原始数据包被正确接收,并且超时是由丢失的确认引起的,并且被认为是虚假超时。 在虚假超时的情况下,不需要使用TCP协议中的拥塞控制机制。