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    • 5. 发明申请
    • SYSTEM AND METHOD FOR AN IMPROVED MBMS TO PSS HANDOVER
    • 用于改进对PSS切换的MBMS的系统和方法
    • WO2008155713A2
    • 2008-12-24
    • PCT/IB2008/052371
    • 2008-06-17
    • NOKIA CORPORATIONNOKIA INCVEDANTHAM, RamakrishnaBOUAZIZI, Imed
    • VEDANTHAM, RamakrishnaBOUAZIZI, Imed
    • H04W4/00
    • H04L65/4076H04L65/608H04W36/08H04W48/08H04W72/005
    • A system and method for ensuring an improved transition at the application layer when distribution of media is changed from broadcast/multicast bearers to unicast bearers and vice versa. A mapping is defined between the timeline of a Packet- Switched Streaming Service (PSS) session and the Multimedia Broadcast Multicast Service (MBMS) session timeline. This mapping is used to enable the correct positioning of the stream in a PSS session by a PSS server after a handover has occurred. Broadcast multicast service center (BM-SC) signals can support various options for media playback after a MBMS-PSS handover in a PSS session description protocol (SDP) file or in the MBMS user service description (USD). In response, the client can signal its choice in the RTSP request that is sent when switching to the PSS session.
    • 一种用于确保当媒体分发从广播/多播承载变为单播承载时应用层改进的转换的系统和方法,反之亦然。 在分组交换流服务(PSS)会话的时间线和多媒体广播多播服务(MBMS)会话时间线之间定义映射。 该映射用于在切换发生之后由PSS服务器在PSS会话中正确定位流。 广播多播服务中心(BM-SC)信号可以在PSS会话描述协议(SDP)文件或MBMS用户服务描述(USD)中的MBMS-PSS切换之后支持用于媒体回放的各种选项。 作为响应,客户端可以在切换到PSS会话时发送的RTSP请求中指示其选择。
    • 7. 发明申请
    • VIRTUAL TV ROOM SERVICE WITH INTERACTIVE CAPABILITIES SIGNALING
    • 具有交互式能力信号的虚拟电视室服务
    • WO2009007815A2
    • 2009-01-15
    • PCT/IB2008/001750
    • 2008-07-02
    • NOKIA CORPORATIONNOKIA INC.VEDANTHAM, RamakrishnaLEON, DavidCHANDRA, Umesh
    • VEDANTHAM, RamakrishnaLEON, DavidCHANDRA, Umesh
    • H04N7/173
    • H04N7/17318H04N21/254H04N21/2668H04N21/41407H04N21/4788H04N21/6131H04N21/6181
    • A virtual TV room service configured with a virtual TV room session responsive to a unique session set-up protocol between participants in the virtual TV room session and a conference server unit hosting the virtual TV room service wherein the conference server unit is defined by a unique Session Initiation Protocol Uniform Resource Identifier formed by concatenating the public portion of the Session Initiation Protocol Uniform Resource Identifier signaled in the electronic server/program guide for the mobile TV channel and the private portion of the Session Initiation Protocol Uniform Resource Identifier unique to the virtual TV room community and arranged such that each of the participants in the virtual TV room session is watching the same mobile TV channel. The capabilities of media control that are available to the participants in the virtual TV room session are specified in an XML file configured for communication during the setting up of the virtual TV room session.
    • 响应于虚拟TV会议室会话中的参与者与托管虚拟TV会议室服务的会议服务器单元之间的唯一会话建立协议而配置有虚拟TV会议室会话的虚拟TV会议室服务,其中, 会议服务器单元由独特的会话发起协议统一资源标识符定义,所述会话发起协议统一资源标识符通过串联在用于移动电视频道的电子服务器/节目指南中发送的会话发起协议统一资源标识符的公开部分和会话发起协议 统一资源标识符对于虚拟电视机房社区是唯一的,并且被安排为使得虚拟电视机房会话中的每个参与者正在观看相同的移动电视频道。 虚拟电视会议室中的参与者可以使用的媒体控制功能在配置为在设置虚拟电视会议室期间进行通信的XML文件中指定。
    • 8. 发明申请
    • SYSTEM AND METHOD FOR OPTIMIZING DOWNLOAD USER SERVICE DELIVERY TO ROAMING CLIENTS
    • 用于优化下载用户服务交付给滚动客户端的系统和方法
    • WO2008129471A2
    • 2008-10-30
    • PCT/IB2008/051466
    • 2008-04-16
    • NOKIA CORPORATIONBOUAZIZI, ImedVEDANTHAM, Ramakrishna
    • BOUAZIZI, ImedVEDANTHAM, Ramakrishna
    • H04L12/18
    • H04L12/189H04L65/4076H04L67/02H04L67/06H04L67/26H04W72/005
    • A system and method for providing MBMS content distribution using unicast bearers. According to various embodiments, MBMS download user services are delivered to pieces of user equipment by delivering a FLUTE file delivery table via an OMA Push message. One of a number of different additional actions may be used in the delivery of the MBMS download user services. These actions include (1) making a single HTTP GET request using simple URL-encoding format to retrieve all files of the FDT; (2) making a single HTTP GET request using "group" field of FDT in URL- encoding to retrieve a logical group of files of the FDT; (3) making pipelined HTTP GET requests where each HTTP GET request retrieves at least one file of the FDT; (4) making serialized HTTP GET requests where each HTTP GET request retrieves at least one file of the FDT; (5) making pipelined HTTP GET requests where each HTTP GET request retrieves at least one logical group of files of the FDT; (6) making serialized HTTP GET requests where each HTTP GET request retrieves al least one logical group of files of the FDT; (7) delivering the servicelD of the MBMS user service in the above mentioned OMA PUSH message but not including the servicelD in the FLUTE FDT; (8) an HTTP request to de-register the MBMS UE from the BM- SC for stopping the unicast delivery of the MBMS download user service; and (9) delivering the FDT Instance ID of the FDT Instance in an OMA Push message,
    • 一种使用单播承载提供MBMS内容分发的系统和方法。 根据各种实施例,通过经由OMA推送消息传送FLUTE文件传递表,将MBMS下载用户服务传递给用户设备。 可以在传送MBMS下载用户服务中使用多种不同的附加动作中的一种。 这些操作包括(1)使用简单的URL编码格式制作单个HTTP GET请求来检索FDT的所有文件; (2)使用URL编码中的FDT的“group”字段进行单个HTTP GET请求,以检索FDT的文件的逻辑组; (3)制作流水线HTTP GET请求,其中每个HTTP GET请求检索至少一个FDT文件; (4)制作序列化的HTTP GET请求,其中每个HTTP GET请求检索至少一个FDT文件; (5)制作流水线HTTP GET请求,其中每个HTTP GET请求检索至少一个FDT的文件组; (6)进行序列化的HTTP GET请求,其中每个HTTP GET请求检索FDT的文件的至少一个逻辑组; (7)在上述OMA PUSH消息中传送MBMS用户服务的服务ID,但不包括在FLUTE FDT中的服务ID; (8)从用于停止MBMS下载用户业务的单播传送的BM-SC去注册MBMS UE的HTTP请求; 和(9)在OMA推送消息中传送FDT实例的FDT实例ID,
    • 9. 发明申请
    • PACKET TRANSMISSION USING ERROR CORRECTION OF DATA PACKETS
    • 使用数据包的错误校正的分组传输
    • WO2006038054A1
    • 2006-04-13
    • PCT/IB2004/003253
    • 2004-10-06
    • NOKIA CORPORATIONVEDANTHAM, RamakrishnaLEON, DavidCURCIO, Igor
    • VEDANTHAM, RamakrishnaLEON, DavidCURCIO, Igor
    • H04L1/00
    • H03M13/1102H03M13/2707H03M13/373H03M13/6356H04L1/0057
    • The invention relates to the generation of error correction data for available data packets 53 and to the reconstruction of missing data packets based on available data packets and available error correction data. In order to enable an efficient error correction, the data packets 53 are distributed at an encoding end to at least one block of data symbols 54, each data symbol 54 being of equal size (steps 403,404). Then all data symbols 54 of a respective block are used in an encoding operation for forming a respective one of at least one error correction symbol 56 for this block (step 405). At a decoding end, received data packets 83 are distributed again to a block of data symbols 84 and missing data packets are reconstructed based on these data symbols 84 and on error correction symbols 86 associated to the block.
    • 本发明涉及根据可用的数据分组和可用的纠错数据生成可用数据分组53的纠错数据和丢失数据分组的重构。 为了实现有效的纠错,数据分组53在编码端分配给至少一个数据符号块54,每个数据符号54具有相同的大小(步骤403,404)。 然后,在用于形成该块的至少一个误差校正符号56中的相应一个的编码操作中使用相应块的所有数据符号54(步骤405)。 在解码端,接收的数据分组83再次分配到数据符号块84,并且基于这些数据符号84和与该块相关联的纠错符号86来重构丢失的数据分组。