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    • 5. 发明授权
    • Wireless communications system having built-in packet data compression and support for enabling non-standard features between network elements
    • 具有内置分组数据压缩和支持的无线通信系统支持网元之间的非标准特征
    • US07920590B2
    • 2011-04-05
    • US10194521
    • 2002-07-12
    • Khiem LeYousuf SaifullahYogesh Swami
    • Khiem LeYousuf SaifullahYogesh Swami
    • H04J3/22
    • H04L67/2828H04L69/04H04L69/22H04L69/329
    • A mobile station (100) and a compression/decompression node in a wireless network (5), preferably the GGSN 30 (30), agree on whether to apply compression/decompression, and what compression/decompression scheme to use either by pre-configuration (when the GGSN 30 is in the home network of the mobile terminal) or by signalling (when the GGSN 30 is in a visited or a roamed-to network). Additional information, such as a profile-specific dictionary, may be used to increase the compression efficiency, particularly during start-up. Dynamic data can also be accommodated. The compression/decompression may be turned on and off on a packet-by-packet basis, depending on whether the compression actually results in a smaller packet. A compressed/uncompressed indicator bit or bits can be inserted explicitly on a per packet basis, and/or the compressed/uncompressed indication can be derived implicitly. A desired data compression/decompression algorithm, or any desired Proprietary Feature, can be signaled, possible without requiring standardization changes, by using a Packet Data Protocol PDP Context Activation message with a predetermined Access Point Name (APN) message information element that is sent from a first network element to a second network element for at least identifying the desired compression/decompression algorithm. It another embodiment, for the case where Proprietary Feature capability is exchanged between a RAN and a UE network element, a transmission of an extension to a UE Capability Enquiry message is sent to the UE for identifying the Proprietary Feature.
    • 无线网络(5)中优选地GGSN 30(30)中的移动台(100)和压缩/解压缩节点就是否应用压缩/解压缩以及通过预配置来使用什么压缩/解压缩方案是一致的 (当GGSN 30在移动终端的家庭网络中时)或通过信令(当GGSN 30在访问或漫游到网络中时)。 可以使用附加信息,例如特定于配置文件的字典来提高压缩效率,特别是在启动期间。 也可以适应动态数据。 取决于压缩是否实际导致较小的分组,压缩/解压缩可以逐个分组地打开和关闭。 压缩/未压缩的指示符位可以以每个数据包为基础被明确地插入,和/或可以隐式地导出压缩/未压缩的指示。 通过使用具有预定接入点名称(APN)消息信息元素的分组数据协议PDP上下文激活消息,可以用信号通知所需的数据压缩/解压缩算法或任何期望的专有特征,而不需要标准化改变 用于至少识别所需的压缩/解压缩算法的第二网络元件的第一网络元件。 在另一实施例中,对于在RAN和UE网元之间交换专有特征功能的情况,将向UE功能查询消息的扩展的传输发送给UE以识别专有特征。