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    • 4. 发明授权
    • Reducing access network congestion caused by oversubscription of multicast groups
    • 减少由多播组超额订购引起的接入网拥塞
    • US08937858B2
    • 2015-01-20
    • US12891565
    • 2010-09-27
    • Kunal ShahAvoy Nanda
    • Kunal ShahAvoy Nanda
    • H04L12/26H04L12/18H04L12/801
    • H04L12/185H04L12/1886H04L47/12H04L47/15
    • A multicast router is coupled with a multicast enabled layer 2 device that is coupled with a source of multicast data traffic for multicast groups. Responsive to determining that the amount of bandwidth currently being attributed as being used by the subscriber exceeds its allowed bandwidth limit due to oversubscription of multicast groups, the multicast router switches from periodically transmitting multicast membership general query messages to the multicast hosts of the subscriber, to transmitting one or more multicast membership group-specific query messages to one or more multicast hosts of the subscriber for a subset of the subscribed multicast groups to impede the subscribed multicast groups that are not part of the subset from being refreshed to cause the multicast data traffic for those multicast groups from being transmitted on the access network to the multicast hosts of the subscriber.
    • 组播路由器与多播使能层2设备耦合,该组播设备与多播组的组播数据流量源相连。 响应于确定当前被用户使用的带宽量由于多播组的超额预订而超过其允许的带宽限制,则组播路由器从周期性地发送组播成员关系通用查询消息切换到订户的多播主机, 向订户的一个或多个多播主机发送一个或多个多播成员组特定查询消息,用于订阅的多播组的子集,以阻止不是该子集的一部分的订阅的多播组被刷新以导致多播数据业务 这些组播组在接入网络上传输到用户的组播主机。
    • 5. 发明申请
    • Methods and Systems for Scalable Distribution of Protected Content
    • 可扩展分布保护内容的方法和系统
    • US20120185695A1
    • 2012-07-19
    • US13005823
    • 2011-01-13
    • Kunal ShahSunil Agrawal
    • Kunal ShahSunil Agrawal
    • H04L9/32
    • H04L9/0822H04L9/3234H04L2209/603H04N21/26613H04N21/4623H04N21/4627
    • A computerized device can implement a content player to access a content stream using a network interface, the content stream comprising encrypted content and an embedded license comprising a content key encrypted according to a global key accessible by the content player. The content player determines whether a token meeting an authorization condition is present and uses the global key to decrypt the content key only if such a token is present. The authorization condition may be evaluated at least in part based on data included in the content stream. The authorization condition can include presence of a token having a content ID matching a corresponding ID in the license; presence of a token with a correct device ID; presence of a token signed according to a digital signature identified in the licenses; and/or presence of a token that is unexpired, with expiration evaluated based on a time-to-live indicator in the token.
    • 计算机化设备可以实现内容播放器以使用网络接口访问内容流,所述内容流包括加密的内容,以及嵌入式许可证,其包括根据内容播放器可访问的全局键加密的内容密钥。 内容播放器确定是否存在满足授权条件的令牌,并且仅当存在这样的令牌时才使用全局密钥来解密内容密钥。 授权条件可以至少部分地基于包括在内容流中的数据来评估。 授权条件可以包括存在具有与许可证中的对应ID相匹配的内容ID的令牌; 使用正确的设备ID存在令牌; 存在根据许可证中标识的数字签名签名的令牌; 和/或未到期的令牌的存在,其中通过令牌中的生存时间指示符来评估过期。
    • 8. 发明授权
    • Efficient control packet replication in data plane
    • 在数据平面中高效的控制数据包复制
    • US08804723B2
    • 2014-08-12
    • US13453752
    • 2012-04-23
    • Alok GulatiKunal Shah
    • Alok GulatiKunal Shah
    • H04L12/28
    • H04L45/16H04L45/60
    • A method for replicating a control packet in a forwarding plane of a network element, the control packet being destined for a plurality of subscriber end stations. The forwarding plane receives the control packet from a control plane and detects a replication indicator associated with the control packet. The forwarding plane determines the plurality of subscriber end stations as each of the plurality of subscriber end stations is associated with the control packet. The forwarding plane then replicates the control packet for each of the plurality of subscriber end stations and distributes the replicated control packets to the plurality of subscriber end stations.
    • 一种用于在网元的转发平面中复制控制分组的方法,所述控制分组指定给多个用户终端站。 转发平面从控制平面接收控制包,并检测与控制包相关联的复制指示符。 当多个用户终端站中的每一个与控制分组相关联时,转发平面确定多个用户终端站。 转发平面然后复制多个用户端站中的每一个的控制分组,并将复制的控制分组分发给多个用户终端站。