RESTRICTIVE REUSE FOR A WIRELESS COMMUNICATION SYSTEM
    2.
    发明公开
    RESTRICTIVE REUSE FOR A WIRELESS COMMUNICATION SYSTEM 有权
    限制性重用用于无线通信系统

    公开(公告)号:EP1690431A2

    公开(公告)日:2006-08-16

    申请号:EP04796869.8

    申请日:2004-10-28

    IPC分类号: H04Q7/36 H04Q7/38

    摘要: For restrictive reuse, each cell (or each sector) is assigned (1) a set of usable subbands that may be allocated to users in the cell and (2) a set of forbidden subbands that is not used. The usable and forbidden sets for each cell are orthogonal to one other. The usable set for each cell also overlaps the forbidden set for each neighboring cell. A user u in a cell x may be allocated subbands in the usable set for that cell. If user u observes/causes high level of interference from/to a neighboring cell y, then user u may be allocated subbands from a 'restricted' set containing subbands included in both the usable set for cell x and the forbidden set for cell y. User u would then observe/cause no interference from/to cell y. The subband restriction may be extended to avoid interference from multiple neighboring cells.

    LAYERED REUSE FOR A WIRELESS COMMUNICATION SYSTEM
    4.
    发明公开
    LAYERED REUSE FOR A WIRELESS COMMUNICATION SYSTEM 有权
    分层重用用于无线通信系统

    公开(公告)号:EP1692904A1

    公开(公告)日:2006-08-23

    申请号:EP04795968.9

    申请日:2004-10-22

    IPC分类号: H04Q7/38

    摘要: To reduce inter-sector interference for 'weak' users and combat a potentially large variation in interference levels observed by 'strong' and weak users, system resources (e.g., frequency subbands) available for data transmission in a system are partitioned into multiple (e.g., three) disjoint sets. Each sector in the system is assigned one subband set. Neighboring sectors are assigned different subband sets such that the subband set assigned to each sector is orthogonal to the subband sets assigned to neighboring sectors. Each sector has an assigned subband set and an unassigned subband set, which contains all subbands not in the assigned set. Weak users in each sector (which are typically strong interferers to neighboring sectors) are allocated subbands in the assigned set. Strong users in each sector are allocated subbands in the unassigned set. The weak users in each sector are then orthogonal to strong interferers in neighboring sectors.

    METHOD AND APPARATUS FOR VIRTUAL PAIRING WITH A GROUP OF SEMI-CONNECTED DEVICES
    5.
    发明公开
    METHOD AND APPARATUS FOR VIRTUAL PAIRING WITH A GROUP OF SEMI-CONNECTED DEVICES 有权
    方法和设备虚拟配对半附属设备的组

    公开(公告)号:EP2719113A1

    公开(公告)日:2014-04-16

    申请号:EP11727604.8

    申请日:2011-06-10

    IPC分类号: H04L9/08

    摘要: One feature provides a method for a client node to establish a session key with a group node by obtaining an epoch identity value associated with a current epoch, wherein obtaining the epoch identity value includes one of computing the epoch identity value based on a node real time or negotiating the epoch identity value with the group node, computing a restricted key using a shared secret key, the epoch identity value, and a group node identity associated with the group node, and executing a session key establishment protocol with the group node to derive the session key using the restricted key as a master key in the session key establishment protocol. The session key may be established between the group node and the client node even though communications between the group node and the central node is only intermittently available during the current epoch.

    摘要翻译: 一个特征提供一种用于在客户端节点通过获得与当前历元相关联历元身份值的,worin获得历元身份值包括基于节点实时计算所述历元身份值中的一个来建立与一组节点的会话密钥 或协商与所述群节点历元身份值,使用共享的秘密密钥,所述历元身份值,以及与该组节点相关联的群节点身份计算受限密钥,并执行会话密钥建立协议与组节点来导出 使用受限制的键如在会话密钥建立协议的主密钥的会话密钥。 会话密钥可以在组节点并且即使该组节点和中央节点之间的通信仅在当前历元期间间歇地提供的客户端节点之间建立。

    SYSTEMS AND METHODS OF SIMULTANEOUS, TIME-SHIFTED TRANSMISSION TO MULTIPLE RECEIVERS
    6.
    发明公开
    SYSTEMS AND METHODS OF SIMULTANEOUS, TIME-SHIFTED TRANSMISSION TO MULTIPLE RECEIVERS 审中-公开
    系统和方法为同时,TIME悬空传输到多个接收者

    公开(公告)号:EP2313985A1

    公开(公告)日:2011-04-27

    申请号:EP09763582.5

    申请日:2009-06-11

    IPC分类号: H04B7/02

    CPC分类号: H04B7/022 H04W56/0045

    摘要: Systems and methods for communicating with multiple receivers simultaneously are disclosed. In one embodiment, the method comprises applying a first adjustment (405a) to a first signal (S2 (f ) ) based on a first propagation path delay between a transmitter and a first receiver, combining (410) the adjusted first signal and a second signal (S1 (f ) ), and transmitting a composite signal (S (t) ) based on the combined signal (S' (f ) ) substantially concurrently to the first receiver and a second receiver.