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    • 31. 发明申请
    • Broadcast Channel Timing Detection
    • 广播频道定时检测
    • US20110007728A1
    • 2011-01-13
    • US12599089
    • 2008-03-25
    • Ylva JadingErik Dahlman
    • Ylva JadingErik Dahlman
    • H04B7/216
    • H04L1/0072H04J11/0069H04L1/08H04L5/0053H04L5/0064H04L5/0091H04L25/03866H04L27/2613H04L27/2656H04L2001/0093
    • A broadcast control channel (BCH) transport block is communicated in a cellular communications system having a physical layer in which information is communicated in one or more frames, wherein the BCH transport block represents BCH information. This involves coding (901) the BCH transport block (1001, 1101) to generate M bits of coded information. Nframes segments of coded bits are formed (903) from the M bits of coded information, wherein the BCH information can be derived from any one of the Nframes segments of coded bits. A unique one of Nframes mapping functions is applied (905) to each of the Nframes segments of coded bits to produce Nframes mapped segments of coded bits. A different one of the Nframes mapped segments of coded bits is transmitted (907) in each of Nframes frames. This enables multi-frame timing to be determined even when fewer than all BCH segments are received.
    • 在具有在一个或多个帧中传送信息的物理层的蜂窝通信系统中传送广播控制信道(BCH)传输块,其中,所述BCH传输块表示BCH信息。 这涉及编码(901)BCH传输块(1001,1101)以产生编码信息的M位。 从编码信息的M位形成编码位的N帧段(903),其中BCH信息可以从编码位的N帧段中的任一个导出。 将Nframe映射函数中唯一的一个应用(905)到编码比特的N帧段中的每一个,以产生编码比特的N帧映射段。 编码比特的N帧映射段中的不同的一个在N帧帧中被发送(907)。 这使得即使在接收到比所有BCH段少的情况下也能够确定多帧定时。
    • 36. 发明申请
    • Cell Searching System and Method
    • 小区搜索系统和方法
    • US20110244850A1
    • 2011-10-06
    • US13158895
    • 2011-06-13
    • Bengt LindoffRobert BaldemairErik DahlmanStefan Parkvall
    • Bengt LindoffRobert BaldemairErik DahlmanStefan Parkvall
    • H04W4/00
    • H04L27/2655H04J11/0069H04L27/2602H04L27/2675
    • For wireless networks that transmit synchronization signals allowing user equipment to synchronize to cells within the network and transmit reference signals allowing user equipment to determine cell identities, a method and apparatus taught herein advantageously link the synchronization signal sequences to the reference signal sequences according to a defined mapping. The linking simplifies the cell search process by allowing user equipment to determine cell identities based on mapping detected synchronization signal sequences to the corresponding reference signal or to the corresponding subset of reference signals in embodiments where there are more reference signal sequences than synchronization signal sequences. In at least one embodiment, the network is a 3G LTE network and at least the Primary Synchronization Signal (P-SyS) sequences are linked to the Downlink (DL) reference symbol sequences according to a defined mapping, thereby allowing to user equipment to determine cell identities from detected P-SyS sequences.
    • 对于发送允许用户设备与网络中的小区同步并发送允许用户设备确定小区标识的参考信号的同步信号的无线网络,本文教导的方法和装置有利地将同步信号序列链接到参考信号序列, 映射。 该链接通过允许用户设备基于将检测到的同步信号序列映射到对应的参考信号或者在具有比同步信号序列更多的参考信号序列的参考信号序列的相应子集中来确定小区标识来简化小区搜索过程。 在至少一个实施例中,网络是3G LTE网络,并且至少主同步信号(P-SyS)序列根据定义的映射链接到下行链路(DL)参考符号序列,从而允许用户设备确定 来自检测到的P-SyS序列的细胞鉴定。
    • 37. 发明申请
    • RESOURCE ALLOCATION FOR CO-EXISTING NETWORKS
    • 资源分配现有网络
    • US20090207815A1
    • 2009-08-20
    • US12307763
    • 2007-07-04
    • Stefan ParkvallErik DahlmanWalter MullerGoran Rune
    • Stefan ParkvallErik DahlmanWalter MullerGoran Rune
    • H04W72/04H04J3/00
    • H04B7/2656H04W36/00H04W72/00H04W72/04H04W72/12
    • The present invention relates to methods and arrangements for improving the capabilities of an evolved Universal Terrestrial Radio Access Network, in particular for cases when more than one radio access network applying a time-division duplex transmission mode need to co-exist on a same carrier. The invention addresses further problems concerning an efficient allocation of uplink resources and resource allocation in a handover situation. The present invention assigns an attribute in form of a distinguishing value to the time slots used for the uplink and downlink transmission on said carrier such as to avoid scheduling of transmissions via a first radio access network in downlink or uplink time slots assigned to the second radio access network and to avoid scheduling of transmissions via the second radio access network in uplink time slots assigned for transmissions in the first radio access network.
    • 本发明涉及用于改进演进的通用陆地无线电接入网络的能力的方法和装置,特别是在应用时分双工传输模式的多于一个无线电接入网络需要共同存在于相同载波上的情况下。 本发明解决了在切换情况下有效分配上行链路资源和资源分配的问题。 本发明以对于所述载波上的上行链路和下行链路传输的时隙为特征值分配属性,以避免在分配给第二无线电的下行链路或上行链路时隙中经由第一无线电接入网络调度传输 并且避免在分配给第一无线电接入网络中的传输的上行链路时隙中经由第二无线电接入网络调度传输。
    • 38. 发明授权
    • Cellular radio communication system with frequency reuse
    • 具有频率重用的蜂窝无线电通信系统
    • US07227850B2
    • 2007-06-05
    • US09825353
    • 2001-04-04
    • Erik DahlmanStefan Parkvall
    • Erik DahlmanStefan Parkvall
    • H04Q7/00H04Q7/20H04B7/216H04J1/00
    • H04W16/12H04B7/2618H04L5/0021H04L5/0032H04L5/0073H04W36/18
    • Different frequency reuse values are associated with different channels, e.g., different types of channels in a cellular communications system. For a high speed downlink shared type of channel, the frequency reuse may be greater than one in order to achieve higher data rates. On the other hand, the frequency reuse may be set to one for other channel types, e.g., dedicated channels including both uplink and downlink dedicated channels. Alternatively, the frequency reuse may also be set greater than one for channels in addition to the downlink shared channel, e.g., one or more dedicated downlink channels, while a frequency reuse of one is deployed for one or more uplink dedicated channels. Using different frequency reuse values reduces inter-cell interference, particularly at cell borders, while still maintaining existing soft handover schemes for dedicated channels if one or more of the channels is a code division multiple access (CDMA) type of channel.
    • 不同的频率重用值与不同的信道相关联,例如蜂窝通信系统中不同类型的信道。 对于高速下行链路共享类型的信道,频率重用可以大于1,以便实现更高的数据速率。 另一方面,对于其他信道类型,例如,包括上行链路和下行链路专用信道两者的专用信道,频率重用可以被设置为一个。 或者,除了下行链路共享信道(例如,一个或多个专用下行链路信道)之外,还可以将频率重用设置为大于一个,同时针对一个或多个上行链路专用信道部署一个频率重用。 如果一个或多个信道是码分多址(CDMA)类型的信道,则使用不同的频率重用值减少小区间干扰,特别是在小区边界,同时仍然维持用于专用信道的现有软切换方案。