Compressing GPS satellite broadcast message information in an assisted GPS system

    公开(公告)号:GB2365722A

    公开(公告)日:2002-02-20

    申请号:GB0103552

    申请日:2001-02-14

    Applicant: MOTOROLA INC

    Abstract: An assisted global positioning satellite (Assisted GPS) system has a GPS reference network node (260) that collects GPS satellite broadcast messages and prepares separate GPS assistance messages to be modulated by a base transceiver station (BTS) (202) on a cellular carrier signal (201) and sent to single or multiple handset (204). In a first preferred embodiment, instead of the handset (204) receiving standard ephemeris and clock correction data elements in a GPS assistance message, a compressed GPS assistance message containing XYZ information contains a GPS satellite's coordinate position modified according to the satellite clock correction. In a second preferred embodiment, there is a first type of compressed GPS assistance message containing subframe 1,2,3 data of a GPS satellite broadcast message and a second type of compressed GPS assistance message containing subframe 4, 5 data of a GPS satellite broadcast message. The compressed GPS assistance messages according to the second preferred embodiment lack redundant or predictable information in order to reduce the size of the compressed GPS assistance message. The first type can be updated at a different rate than the second type in order to reduce the traffic and yet keep the handset (204) up to date.

    Method and Apparatus for Assisted GPS Integrity Maintenance

    公开(公告)号:IE20000906A1

    公开(公告)日:2001-05-16

    申请号:IE20000906

    申请日:2000-11-10

    Applicant: MOTOROLA INC

    Abstract: A cellular network protocol which maintains the reliability of assisted GPS based positioning is taught. An Integrity Monitor (IM) informs mobile stations, their users, or networks of measurement quality and it warns them of failing and failed GPS satellites by isolating them from the effects of these failures. Whenever an unhealthy satellite is detected, its corresponding assistance data will be excluded for delivery or for position determination. In other words, there are two specific aspects to the Integrity Monitor (IM). For DGPS users, it predicts the reliability or quality of the DGPS corrections. For all users, it isolates the mobile position calculation from the effects of GPS satellite failures. The UDRE parameter, nominally output by a reference DGPS receiver, is used to communicate the DGPS quality information, and DGPS corrections are simply excluded for failed satellites. For autonomous GPS users, a special integrity message is required and defined to communicate the satellite failure status information.

    FINGERPRINT SECURITY SYSTEMS IN HANDHELD ELECTRONIC DEVICES AND METHODS THEREFOR
    25.
    发明申请
    FINGERPRINT SECURITY SYSTEMS IN HANDHELD ELECTRONIC DEVICES AND METHODS THEREFOR 审中-公开
    手指电子设备​​中的指纹安全系统及其方法

    公开(公告)号:WO2004061752A3

    公开(公告)日:2004-11-11

    申请号:PCT/US0337974

    申请日:2003-11-17

    Applicant: MOTOROLA INC

    CPC classification number: H04M1/67 G06K9/00006 H04M2250/12 H04W88/02

    Abstract: Fingerprint image processing methods for fingerprint security systems, for example, in wireless communications devices, including capturing fingerprint images (320), identifying features from images (330), matching the identified features with reference features (340), and providing access to the device based upon feature matching (350) results. In one embodiment, minutiae features are extracted from the image and matched to reference minutiae features.

    Abstract translation: 包括捕获指纹图像(320),识别来自图像(330)的特征,将所识别的特征与参考特征(340)进行匹配以及提供对设备的访问(320),用于指纹安全系统的指纹图像处理方法, 基于特征匹配(350)结果。 在一个实施例中,细节特征从图像中提取并与参考细节特征匹配。

    TIME SYNCHRONIZATION OF A SATELLITE POSITIONING SYSTEM ENABLED MOBILE RECEIVER AND BASE STATION
    26.
    发明申请
    TIME SYNCHRONIZATION OF A SATELLITE POSITIONING SYSTEM ENABLED MOBILE RECEIVER AND BASE STATION 审中-公开
    卫星定位系统启用移动接收机和基站的时间同步

    公开(公告)号:WO02067439A3

    公开(公告)日:2003-08-14

    申请号:PCT/US0203871

    申请日:2002-02-05

    Applicant: MOTOROLA INC

    CPC classification number: G01S19/235 H04W56/0015

    Abstract: Satellite positioning system enabled mobile receivers (310) and cellular communication network base stations (330) synchronized with satellite positioning system clocks and method therefore. In a network-assisted embodiment, a variable propagation delay for transmission of an assistance message (232) from the base station to the mobile receiver is determined for correcting the handset clock (318). In others embodiments, local clock drift of mobile receivers (310) and/or base stations (330) are determined by a ratio of local and satellite time differences, based on sequential time snapshots, for use in correcting the local clocks.

    Abstract translation: 卫星定位系统支持与卫星定位系统时钟同步的移动接收机(310)和蜂窝通信网络基站(330)。 在网络辅助实施例中,确定用于从基站向移动接收机发送辅助消息(232)的可变传播延迟,用于校正手机时钟(318)。 在其他实施例中,移动接收机(310)和/或基站(330)的本地时钟漂移由用于校正本地时钟的时间快照由本地和卫星时间差的比率确定。

    MULTIMEDIA EDITOR FOR WIRELESS COMMUNICATION DEVICES AND METHOD THEREFOR
    27.
    发明申请
    MULTIMEDIA EDITOR FOR WIRELESS COMMUNICATION DEVICES AND METHOD THEREFOR 审中-公开
    用于无线通信设备的多媒体编辑器及其方法

    公开(公告)号:WO2004054278A3

    公开(公告)日:2004-12-09

    申请号:PCT/US0337700

    申请日:2003-11-25

    Applicant: MOTOROLA INC

    Inventor: ZHAO YILIN TAN BO

    CPC classification number: H04M1/72536 H04M1/72547

    Abstract: A multimedia editor (160) for use within a wireless communication device (10) includes a user interface (60), a content memory (90), a multimedia editor application (65), one or more decoders (125, 130, 135, 138), and a mixer/synchronizer (150). The multimedia editor (160) creates original multimedia content (140) using voice, singing, text, background sound, as well as music, graphics, image, audio, and video selected from one or more multimedia content (105) stored in the content memory (90).

    Abstract translation: 在无线通信设备(10)内使用的多媒体编辑器(160)包括用户接口(60),内容存储器(90),多媒体编辑器应用(65),一个或多个解码器(125,130,135, 138)和混合器/同步器(150)。 多媒体编辑器(160)使用从存储在内容中的一个或多个多媒体内容(105)中选择的语音,歌唱,文本,背景声音以及音乐,图形,图像,音频和视频来创建原始多媒体内容(140) 记忆(90)。

    PACKET FILTERING FOR EMERGENCY ACCESS IN A PACKET DATA NETWORK COMMUNICATION SYSTEM
    28.
    发明申请
    PACKET FILTERING FOR EMERGENCY ACCESS IN A PACKET DATA NETWORK COMMUNICATION SYSTEM 审中-公开
    分组数据网络通信系统中紧急接入的分组过滤

    公开(公告)号:WO2004095855A2

    公开(公告)日:2004-11-04

    申请号:PCT/US2004008973

    申请日:2004-03-19

    CPC classification number: H04W76/022 H04W4/22 H04W76/007

    Abstract: A method and apparatus method of filtering packet data for an anonymous user device in a packet data network communication system includes a first step of defining a special context information element containing special context information. A next step includes sending the special context information element in an activate packet data protocol (PDP) context request to a network to initiate a call from an anonymous user device. A next step includes configuring the data packets so that only the special context is allowed. A next step includes assigning an interim IP address to the user device. A next step includes mapping the data packets of the configuring step to the interim IP address of the user device. A next step includes defining permissible routing identities per the special context. A next step includes routing the data packets between only those permissible routing identities from the defining step.

    Abstract translation: 一种在分组数据网络通信系统中过滤用于匿名用户设备的分组数据的方法和装置方法包括:定义包含特殊上下文信息的特殊上下文信息元素的第一步骤。 下一步骤包括将激活分组数据协议(PDP)上下文请求中的特殊上下文信息元素发送到网络以发起来自匿名用户设备的呼叫。 下一步包括配置数据包,以便只允许特殊上下文。 下一步包括将临时IP地址分配给用户设备。 下一步包括将配置步骤的数据包映射到用户设备的临时IP地址。 下一步包括根据特殊上下文定义可允许的路由标识。 下一步包括在定义步骤之间仅在那些允许的路由标识之间路由数据分组。

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