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    • 8. 发明申请
    • METHODS AND APPARATUS OF HEADER COMPRESSION FOR BROADCAST SERVICES IN RADIO TELECOMMUNICATION SYSTEM
    • 无线电通信系统中广播业务的头部压缩方法与装置
    • WO2004051912A2
    • 2004-06-17
    • PCT/US2003/038583
    • 2003-12-03
    • NOKIA CORPORATIONLE, KhiemHSU, Liangchi, AlanCHENG, MarkNGUYENPHU, Thinh
    • LE, KhiemHSU, Liangchi, AlanCHENG, MarkNGUYENPHU, Thinh
    • H04L
    • H04L69/04H04L29/06H04L69/22H04W4/06H04W24/00H04W28/06H04W28/18H04W76/10
    • A method and apparatus for packet-data header decompression, particularly advantageous for use in connection with broadcast and multicast messages being transported through a radio telecommunication system operable according to the CDMA 2000 standard. When a mobile subscriber desires broadcast content from a content server, the mobile station sets up a PPP session for submitting the request and negotiating security protocols. When a subscription is granted, the mobile station receives broadcast content that has undergone header compression. In order to synchronize its decompressor, the mobile station receives a full header from a PDSN. The full header is preferably sent out on a periodic basis just for this purpose. The frequency of full-header transmissions by the PDSN is increased from a normal mode to a high full-header frequency (HFHF) mode upon receiving a request for a full header from a mobile station, but returns to normal-mode full-header transition frequency after receiving an ACK message from the requesting mobile indicating successful decompressor synchronization, or upon the expiration of a predetermined HFHF-mode maximum duration.
    • 一种用于分组数据报头解压缩的方法和装置,特别有利于与根据CDMA 2000标准可操作的无线电电信系统传输的广播和多播消息相结合。 当移动用户希望来自内容服务器的广播内容时,移动台建立用于提交请求和协商安全协议的PPP会话。 当授权订阅时,移动台接收经过标题压缩的广播内容。 为了使其解压缩器同步,移动站从PDSN接收完整报头。 为了这个目的,完全标题优选地是定期发送出去的。 PDSN的全标头传输频率在从移动台接收到全标头的请求时从正常模式增加到高全标头频率(HFHF)模式,但是返回正常模式全标头转换 从请求的移动台接收到指示成功的解压缩器同步的ACK消息之后,或者在预定的HFHF模式最大持续时间期满之后。