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    Systems and methods for key management for wireless communications systems
    4.
    发明授权
    Systems and methods for key management for wireless communications systems 有权
    无线通信系统密钥管理的系统和方法

    公开(公告)号：US08948395B2

    公开(公告)日：2015-02-03

    申请号：US11843583

    申请日：2007-08-22

    申请人： Vidya Narayanan ,  Lakshminath Reddy Dondeti ,  Parag Arun Agashe ,  Paul E. Bender

    发明人： Vidya Narayanan ,  Lakshminath Reddy Dondeti ,  Parag Arun Agashe ,  Paul E. Bender

    IPC分类号： H04L29/06 ,  H04W12/04 ,  H04L9/08 ,  H04W36/08

    CPC分类号： H04L63/062 ,  H04L9/0844 ,  H04L9/0891 ,  H04L2209/80 ,  H04L2463/061 ,  H04W12/04 ,  H04W36/08

    摘要： A novel key management approach is provided for securing communication handoffs between and access terminal and two access points. This approach provides for securely handing off communications between an access terminal and access point without risking exposure a master key for the access terminal. Temporary master keys are derived for low latency handoffs and secure authentication between a new access point and the access terminal. In one aspect, a distributive key management scheme is provided in which a current access point generates a new security key (based on its own security key) that is used by the next access point with which an access terminal communicates. In another aspect, a centralized key management scheme is provided in which a central authenticator maintains, generates, and distributes new security keys (based on a master security key associated with the access terminal) to access points.

    摘要翻译： 提供了一种新颖的密钥管理方法，用于保证接入终端与两个接入点之间的通信切换。 这种方法提供了安全地切断接入终端和接入点之间的通信，而不会冒着接入终端的主密钥的风险。 派生临时主密钥用于低延迟切换和新接入点与接入终端之间的安全认证。 一方面，提供一种分配密钥管理方案，其中当前接入点生成由接入终端与之通信的下一个接入点使用的新的安全密钥（基于其自身的安全密钥）。 在另一方面，提供一种集中式密钥管理方案，其中中央认证器维护，生成和分发新的安全密钥（基于与接入终端相关联的主安全密钥）到接入点。

    Connected-state radio session transfer in wireless communication systems
    5.
    发明授权
    Connected-state radio session transfer in wireless communication systems 有权
    无线通信系统中的连接状态无线电会话传输

    公开(公告)号：US08515424B2

    公开(公告)日：2013-08-20

    申请号：US11123658

    申请日：2005-05-06

    申请人： Peerapol Tinnakornsrisuphap ,  Parag Arun Agashe ,  Ramin Rezaiifar ,  Bibhu P. Mohanty ,  Paul E. Bender

    发明人： Peerapol Tinnakornsrisuphap ,  Parag Arun Agashe ,  Ramin Rezaiifar ,  Bibhu P. Mohanty ,  Paul E. Bender

    IPC分类号： H04W36/00

    CPC分类号： H04W76/02 ,  H04W36/10 ,  H04W36/12 ,  H04W76/10

    摘要： Embodiments described herein relate to connected-state radio session transfer in wireless communications. A source access network controller may lock a source radio session associated with an access terminal (e.g., in response to detecting a handoff condition associated with the access terminal), where the source access network controller may be in communication with a data network. The source access network controller may also instruct a target access network controller to create a target radio session corresponding with the source radio session, and to establish a communication route between the data network and the access network via the target ANC. The source access network controller may then freeze a state associated with the source radio session and transmits the frozen state to the target access network controller. The target access network controller may subsequently unfreeze the received state and further unlock the radio session, hence resuming control of the access terminal.

    摘要翻译： 本文描述的实施例涉及无线通信中的连接状态无线电会话传送。 源接入网络控制器可以锁定与接入终端相关联的源无线电会话（例如，响应于检测到与接入终端相关联的切换条件），其中源接入网络控制器可以与数据网络通信。 源接入网络控制器还可以指示目标接入网络控制器创建与源无线电会话相对应的目标无线电会话，并且经由目标ANC在数据网络和接入网络之间建立通信路由。 然后，源接入网络控制器可以冻结与源无线电会话相关联的状态，并将冻结状态发送到目标接入网络控制器。 目标接入网络控制器可以随后解冻接收到的状态并进一步解锁无线电会话，从而恢复接入终端的控制。

    Resource partitioning information for enhanced interference coordination
    6.
    发明授权
    Resource partitioning information for enhanced interference coordination 有权
    用于增强干扰协调的资源分区信息

    公开(公告)号：US09392608B2

    公开(公告)日：2016-07-12

    申请号：US13085373

    申请日：2011-04-12

    申请人： Osok Song ,  Aleksandar Damnjanovic ,  Tingfang Ji ,  Taesang Yoo ,  Parag Arun Agashe ,  Madhavan Srinivasan Vajapeyam ,  Yongbin Wei ,  Tao Luo ,  Rajat Prakash ,  Masato Kitazoe

    发明人： Osok Song ,  Aleksandar Damnjanovic ,  Tingfang Ji ,  Taesang Yoo ,  Parag Arun Agashe ,  Madhavan Srinivasan Vajapeyam ,  Yongbin Wei ,  Tao Luo ,  Rajat Prakash ,  Masato Kitazoe

    IPC分类号： H04W72/00 ,  H04W72/08

    CPC分类号： H04W72/082 ,  H04W72/08

    摘要： Methods and apparatus for partitioning resources for enhanced inter-cell interference coordination (eICIC) are provided. Certain aspects involve broadcasting a message indicating time-domain resource partitioning information (RPI), where a user equipment (UE) may be operating in idle mode. With the RPI, the UE may be able to identify protected resources with reduced/eliminated interference from neighboring cells. The RPI in this broadcasted message may be encoded as a bitmap as an alternative or in addition to enumeration of the U/N/X subframes. Other aspects entail transmitting a dedicated or unicast message indicating the time-domain RPI, where a UE may be operating in connected mode. With the RPI, the UE may be able to determine channel state information (CSI), make radio resource management (RRM) measurements, or perform radio link monitoring (RLM), based on one or more signals from a serving base station during the protected time-domain resources.

    摘要翻译： 提供了用于分区资源以增强小区间干扰协调（eICIC）的方法和装置。 某些方面涉及广播指示时域资源划分信息（RPI）的消息，其中用户设备（UE）可以在空闲模式下操作。 利用RPI，UE可能能够识别来自相邻小区的减少/消除的干扰的受保护资源。 该广播消息中的RPI可以被编码为位图，作为U / N / X子帧的枚举的替代或补充。 其他方面需要发送指示时域RPI的专用或单播消息，其中UE可以在连接模式下操作。 利用RPI，UE可以在受保护的基站期间基于来自服务基站的一个或多个信号来确定信道状态信息（CSI），进行无线电资源管理（RRM）测量或执行无线电链路监视（RLM） 时域资源。

    Hybrid cell management in wireless networks
    8.
    发明授权
    Hybrid cell management in wireless networks 有权
    无线网络中的混合小区管理

    公开(公告)号：US08903413B2

    公开(公告)日：2014-12-02

    申请号：US12727168

    申请日：2010-03-18

    申请人： Tingfang Ji ,  Gavin Bernard Horn ,  Ravi Palanki ,  Parag Arun Agashe

    发明人： Tingfang Ji ,  Gavin Bernard Horn ,  Ravi Palanki ,  Parag Arun Agashe

    IPC分类号： H04W72/00 ,  H04W40/00 ,  H04W4/00 ,  H04W36/08 ,  G06F15/16 ,  H04W4/06 ,  H04W76/02

    CPC分类号： H04W36/08 ,  H04W4/06 ,  H04W76/10 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/22

    摘要： Systems and methodologies are described that facilitate providing hybrid cell access points that can support closed subscriber groups (CSG) while providing at least a minimum level of service to wireless devices excluded from the CSG. Hybrid cell access points can allow non-member wireless devices to camp and receive paging signals. Upon receiving a request for resources from non-member wireless devices, hybrid cell access points can handover the non-member wireless devices to an access point that can serve the non-member wireless devices, provide a portion of resources compared to a disparate portion provided to member wireless devices, and/or the like. In addition, hybrid cell access points can vary levels of service and downlink transmission power to provide load balancing for access points. Varying levels of service and downlink transmission power can facilitate additional functionality, such as reducing transmission power to serve member devices while mitigating interference to non-member devices.

    摘要翻译： 描述了系统和方法，其便于提供可以支持封闭用户组（CSG）的混合小区接入点，同时向从CSG排除的无线设备提供至少最低级别的服务。 混合小区接入点可以允许非成员无线设备驻留和接收寻呼信号。 在从非成员无线设备接收到对资源的​​请求时，混合小区接入点可以将非成员无线设备切换到可以服务非成员无线设备的接入点，提供与提供的不同部分相比的一部分资源 到成员无线设备和/或类似物。 此外，混合小区接入点可以改变服务等级和下行链路传输功率，以为接入点提供负载均衡。 不同级别的服务和下行链路传输功率可以促进附加的功能，例如降低传输功率以服务于成员设备，同时减轻对非成员设备的干扰。