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    • 5. 发明授权
    • Protocol with improved spatial reuse
    • 具有改进的空间重用的协议
    • US08289849B2
    • 2012-10-16
    • US12720288
    • 2010-03-09
    • Cássio Barboza RibeiroOlav Tirkkonen
    • Cássio Barboza RibeiroOlav Tirkkonen
    • G01R31/08
    • H04W74/0816
    • According to an embodiment, a method, apparatus, and computer readable medium can provide an efficient mechanism to improve data rates of nodes suffering high interference without sacrificing performance of nodes that do not need interference-free channels to communicate. A node can receive two or more RTS packets and identify the RTS packet corresponding to its own cell, as well as RTS packets belonging to interferers. Based on the interference level estimated from the RTS packets, the node can decide if the channel needs to be interference-free for the intended transmission or if the current level of interference is acceptable. According to the embodiment, there can be two or more different types of CTS packets. A node can decide which type of CTS packet to transmit based on the information, signal level, interference level, or a combination therein, of at least two RTS channels, and based on measurements performed on these RTS channels, or other channels.
    • 根据一个实施例,一种方法,装置和计算机可读介质可以提供一种有效的机制来改善遭受高干扰的节点的数据速率,而不牺牲不需要无干扰信道进行通信的节点的性能。 节点可以接收两个或更多个RTS分组,并且识别与其自己的小区相对应的RTS分组以及属于干扰源的RTS分组。 基于从RTS分组估计的干扰水平,节点可以决定信道是否需要对于预期传输是无干扰的,或者当前的干扰水平是否可接受。 根据实施例,可以有两种或更多种不同类型的CTS分组。 基于对这些RTS信道或其他信道执行的测量,节点可以基于至少两个RTS信道的信息,信号电平,干扰电平或其组合来决定要发送的CTS分组的类型。
    • 6. 发明申请
    • Virtual Timing Indication
    • 虚拟计时指示
    • US20120069836A1
    • 2012-03-22
    • US13266953
    • 2010-04-29
    • Olav TirkkonenMartin DoettlingJiang Yu
    • Olav TirkkonenMartin DoettlingJiang Yu
    • H04W56/00
    • H04J3/0638H04W56/0015
    • The invention is related to wireless communication systems, methods, devices, computer program, and computer-readable memory medium, and, more specifically, relate to synchronization techniques. The invention relates to a method, including deriving two different timings from a timing source, wherein a first derived timing is a physical timing used for timing at least transmissions from a wireless network access node, and wherein a second derived timing is a virtual timing representing a currently preferred physical timing; receiving an indication of a virtual timing from at least one other network access node; comparing the at least one received virtual timing indication with the derived virtual timing of the network access node, and update the derived virtual timing; and determining achieving synchronization of the derived virtual timing with the at least one received virtual timing, and to adjust the physical timing accordingly.
    • 本发明涉及无线通信系统,方法,设备,计算机程序和计算机可读存储介质,更具体地涉及同步技术。 本发明涉及一种方法,包括从定时源导出两个不同的定时,其中第一导出定时是用于定时至少来自无线网络接入节点的传输的物理定时,并且其中第二导出定时是代表 当前优选的物理时序; 从至少一个其他网络接入节点接收虚拟定时的指示; 将所述至少一个接收到的虚拟定时指示与所述网络接入节点的导出的虚拟定时进行比较,并更新所导出的虚拟定时; 以及确定所导出的虚拟定时与所述至少一个接收到的虚拟定时的同步,并且相应地调整所述物理时序。
    • 8. 发明申请
    • APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT FOR SIGNALING MODULATION AND CODING SCHEME
    • 用于信号调制和编码方案的装置,方法和计算机程序产品
    • US20100303052A1
    • 2010-12-02
    • US12525283
    • 2008-01-31
    • Jaakko VisuriKlaus HuglOlav Tirkkonen
    • Jaakko VisuriKlaus HuglOlav Tirkkonen
    • H04B7/216
    • H04L1/0029H04L1/0003H04L1/0007H04L1/0009H04L1/0025H04L1/0026H04L1/0039
    • A first parameter such as an indicator of modulation and coding scheme MCS for a first shared channel SCH codeword and a second parameter for a second SCH codeword are determined. From a locally stored mapping rule a bit sequence that explicitly indicates the first parameter and that implicitly indicates the second parameter is chosen, and a first control channel CCH codeword is transmitted with the explicit bit sequence that explicitly indicates the first parameter for the first SCH codeword and a second CCH codeword is sent companion to the first CCH codeword, wherein the second parameter for the second SCH codeword is implicitly indicated by the explicit bit sequence of the first CCH codeword. The receiving party determines the second parameter by its own locally stored mapping rule, and an indicator in each CCH codeword may be used to inform the receiver that the two (or more) CCH codewords are associated with one another and to use its mapping rule to determine the second parameter.
    • 确定第一参数,例如用于第一共享信道SCH码字的调制和编码方案MCS的指示符和用于第二SCH码字的第二参数的第一参数。 从本地存储的映射规则中,选择明确指示第一参数并隐式指示第二参数的位序列,并且以显式地指示第一SCH代码字的第一参数的显式位序列发送第一控制信道CCH码字 并且第二CCH码字被发送到第一CCH码字的伴随,其中第二SCH码字的第二参数由第一CCH码字的显式比特序列隐含地指示。 接收方通过其本地存储的映射规则来确定第二参数,并且每个CCH码字中的指示符可以用于通知接收机两个(或多个)CCH码字彼此相关联,并且使用其映射规则 确定第二个参数。