CN1930791A - Method and apparatus for communication of GPS ephemeris - Google Patents

Method and apparatus for communication of GPS ephemeris Download PDF

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CN1930791A
CN1930791A CN 200480017279 CN200480017279A CN1930791A CN 1930791 A CN1930791 A CN 1930791A CN 200480017279 CN200480017279 CN 200480017279 CN 200480017279 A CN200480017279 A CN 200480017279A CN 1930791 A CN1930791 A CN 1930791A
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method
apparatus
communication
gps
ephemeris
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CN 200480017279
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Chinese (zh)
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马克·罗
章·罗
杰夫·王
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高通股份有限公司
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/24Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/25Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS
    • G01S19/258Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS relating to the satellite constellation, e.g. almanac, ephemeris data, lists of satellites in view
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/03Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
    • G01S19/05Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing aiding information

Abstract

可选择性地将与基于一全球定位系统(GPS)的定位系统中的人造卫星相关联的卫星星历数据发射至一无线通信系统中的一移动台。 Selectively transmitting the satellite ephemeris data based on a global positioning system (GPS) is a satellite positioning system associated to a mobile station in a wireless communication system. 所述移动台可选择性地从一与一个或一个以上GPS人造卫星(SV)通信的定位实体(PDE)请求卫星星历数据。 The mobile station may selectively request from a satellite ephemeris data with one or more GPS satellites (SV) Position Determination Entity (PDE) in communication. 所述移动台预报理论上可用的人造卫星。 The mobile station satellite theoretical prediction available. 随后,所述移动台检查以了解有效星历数据是否被本地存储。 Subsequently, the mobile station checks to see whether a valid ephemeris data is stored locally. 如果需要星历数据且本地不可用,那么移动台将一选择性星历请求发射至所述PDE,且响应所述请求接收对应于在所述星历请求中标识的SV的所述星历。 If the ephemeris data is required and not available locally, then the mobile station will transmit a selective ephemeris request to the a PDE, and in response to the request corresponding to the received request the ephemeris of the SV ephemeris identified. 所述选择性星历请求和选择性卫星更新方法可根据目前可用的定位标准建构。 The selective and selective Satellite ephemeris update request may be constructed in accordance with methods currently available targeting criteria.

Description

用于GPS星历的传输的方法和装置 A method and apparatus for transmitting a GPS ephemeris

相关申请案本专利申请要求2003年6月27日提交的第60/483,209号美国临时专利申请的优先权。 RELATED APPLICATIONS This patent application claims priority to US Provisional Patent Application No. 60 / 483,209 June 27, 2003 submission.

技术领域 FIELD

所揭示的方法和装置涉及定位领域。 The method and apparatus disclosed relates to the field of positioning. 更特定地说,此揭示内容涉及GPS星历数据的通信。 More specifically speaking, this disclosure relates to communication GPS ephemeris data.

背景技术 Background technique

无线定位系统是用于判定一器件的位置。 Wireless Location System is a device for determining the position. 通常,所述器件为一可由蓄电池电源操作的移动或便携式器件,且所述器件可通过一有限通信链路而不局限于任何固定位置。 Typically, the device is a mobile or portable device may be a battery power supply operation, and the device can be fixed in any position without being limited by a finite communication link.

在一无线定位系统中存在许多设计考虑。 There are many design considerations in a wireless location system. 当然,定位准确性为所述考虑中的一个。 Of course, the positioning accuracy of a consideration. 系统灵敏度、收集时间和功率耗散也为在一定位系统中提出的设计考虑。 Sensitivity of the system to collect time and power dissipation is also proposed design consideration in a positioning system. 无线定位系统通常结合设计制约的一折衷方案以试图获得每一系统考虑的相对最优化。 Wireless location systems typically combine a compromise design constraints in an attempt to get each system takes into account the relative optimization.

随着无线通信系统变得更普遍,已经出现了对结合某种定位能力的需要。 As wireless communication systems become more prevalent, there have been a need for some kind of combination of positioning capability. 在一无线通信系统(例如一无线电话系统)中,可需要能够定位一移动器件(例如一无线电话送受话器)的位置。 In a wireless communication system (e.g. a radio telephone system), you may need to be able to locate a mobile device (e.g. a wireless telephone handset) position. 实际上,在美国,已经对无线电话供应商要求具有判定送受话器位置的能力的增强的应急无线服务。 In fact, in the United States, has been on a wireless phone providers have enhanced the ability of judgment wireless handset location of emergency service requirements. 无线服务供应商与设备制造商一起已经设计了能够提供移动器件(例如一便携式送受话器)的位置的定位系统。 Wireless service providers and equipment manufacturers have designed with a positioning system capable of providing a mobile device (e.g. a portable handset) position.

一可由一移动器件利用的定位系统可基于全球定位系统(GPS)。 A mobile device by using a positioning system may be based on a Global Positioning System (GPS). 在所述全球定位系统中,存在大约24个绕地球轨道运行的卫星。 In the GPS system, there are about 24 satellites orbiting the earth. 每一卫星发射一以一伪随机噪声(PRN)代码序列调制的载频。 Each satellite transmits a pseudorandom to a noise (PRN) code sequence modulated carrier frequency. 通常由基于民用的GPS接收器使用的所述PRN代码称为粗捕获(C/A)代码。 Commonly referred to as a PRN code is based on the civilian GPS receiver using coarse acquisition (C / A) code. 每一卫星发射一不同PRN代码。 Each satellite transmits a different PRN codes. 在所述GPS中,一GPS接收器从多个卫星接收信号且判定离每一卫星的距离以三边测量接收器件的位置。 In the GPS, a GPS receiver receives signals from multiple satellites and determines the distance from each satellite to the receiving device trilateration position.

通常可使用预估算法判定卫星轨道。 It can generally be estimated using satellite orbit determination algorithm. 然而,为获得使用GPS的准确定位,需要准确的卫星位置。 However, to obtain accurate positioning using GPS, need accurate satellite position. GPS卫星发射准确地标识卫星在其轨道中的位置的星历数据。 GPS satellites transmit ephemeris data to accurately identify the location of the satellite in its orbit. 然而,因为卫星的位置通常根据许多因素而改变,所以卫星周期性地更新星历数据。 However, because the position of the satellite usually varies according to many factors, it is periodically updated satellite ephemeris data. 人造卫星(SV)可每小时更新星历数据。 Satellite (SV) per hour can update the ephemeris data. 然而,卫星星历数据的有效时间通常为大约四小时的周期。 However, the effective time of the satellite ephemeris data is typically about four hour period. 由一SV发射的星历数据包括一“星历时间”字段,且星历数据的有效时间通常为以所述星历时间为中心的四小时周期。 Ephemeris data transmitted by a SV includes a "time of ephemeris" field, and a valid time of the ephemeris data is typically at the center of the ephemeris time period of four hours.

GPS SV发射与SV位置相关联的SV星历数据和年历数据所需的时间可相当长。 The time required for SV ephemeris data and almanac data transmitting SV and the GPS SV associated with the location may be quite long. 举例来说,发射一个具有含有SV星历和SV年历数据的子帧的GPS帧的时间可占12.5分钟以上。 For example, time, transmitting a subframe comprising a GPS SV SV ephemeris and almanac data frames may occupy more than 12.5 minutes. 一移动器件(例如一无线通信系统中的一移动台)可在建立一初始定位之前需要接收所有SV星历和年历数据。 A mobile device (e.g. a mobile station in a wireless communication system) may be required to receive all SV ephemeris and almanac data before establishing an initial positioning. 另外,所述移动器件通常需要标识可用卫星并判定与每一可用卫星的伪距离以进行所述初始定位。 Further, the mobile device typically requires identification of available satellites and determines a pseudo distance to each satellite can be used to perform the initial positioning. 初始定位(initial position determination)也可称作首次定位(first fix)或初始定位(initial fix)。 Initial positioning (initial position determination) may also be referred to first fix (first fix) or initial positioning (initial fix). 对于一移动台,与接收SV年历和星历数据相关联的延迟,加上进行定位所需的时间,可大于所需时间或指定最大时间。 For a mobile station, the reception delay SV ephemeris and almanac data associated, plus the time required for positioning, or may be greater than the time required to specify a maximum time.

因此,需要一种用于减少在一基于GPS的定位系统中定位的时间的方法和装置。 Accordingly, a need for a method and apparatus for reducing positioning in a GPS-based positioning system time. 所述方法和装置应减少获得首次定位所需要的时间。 The method and apparatus should reduce access time required for positioning the first time. 另外,将特别有利的是能够以一符合现存标准的方式将所述方法和装置建构于目前可用的无线通信定位系统中。 Further, particularly advantageous to be able in a manner consistent with existing standards of the methods and devices currently available to construct a wireless communication positioning system.

发明内容 SUMMARY

所揭示的方法和装置是用于至少部分地基于人造卫星(SV)的可用性,选择性地请求并下载星历数据。 A method and apparatus is disclosed for at least in part, on the availability of satellite (SV) selectively request and download ephemeris data. 移动台可从一组SV中判定可用SV。 The mobile station may be determined from a set of available SV in the SV. 随后移动台可判定与每一可用SV相关联的当前星历数据是否有效。 Then the mobile station may determine whether the current valid ephemeris data associated with each available SV. 随后移动台可选择性地为那些所述当前星历数据无效的SV请求星历数据。 Then the mobile station may selectively request the ephemeris data for those of the current ephemeris data invalid SV.

选择性地请求定位数据的所揭示的方法的一个方面包含在一移动台中判定复数个可用定位信号源,且判定与所述复数个可用定位信号源相关联的当前定位数据是否有效。 One aspect of the disclosed selectively requesting location data in a mobile station comprises determining a plurality of position location signal sources available, and it is determined whether the current position with the plurality of position location signal sources available data associated effective. 在当前定位数据无效时,移动台可选择性地请求定位数据。 When the current position data is invalid, the mobile station may selectively request location data.

所述方法可包括接收对应于所述组定位信号源的定位数据的年历,且基于年历数据估计每一信号源的位置。 The method may include receiving almanac set of positioning signals corresponding to the location data source, and the estimated position of each of the signal source based on the almanac data. 移动台可基于一预定截止高度角判定可用信号源。 The mobile station may be based on a predetermined elevation angle determines the available sources.

定位信号源可以是GPS SV且可用SV可通过判定相对于一截止高度角的SV的位置判定。 The GPS positioning signal source may be available SV and SV can be determined by determining an elevation angle with respect to the position of the SV. 可用SV也可判定为包括在一将来时间位置可与一截止高度角相比的SV。 SV may also be used to include a time position determination compared with a SV elevation angle in a future.

选择性地请求定位数据的方法可包括产生一符合标准的消息。 The method of selectively requesting positioning data may include generating a standard message. 所述方法可包括产生一请求卫星星历数据的特定制造商定位数据消息。 Specific manufacturer The method may include generating a data request positioning satellite ephemeris data message. 所述消息可标识请求星历数据的卫星。 The request message may identify the satellite ephemeris data.

所揭示的装置的一方面是从一定位实体选择性地请求GPS卫星星历数据的构型。 In one aspect of the disclosed apparatus is to request the configuration data of the GPS satellite ephemeris from a selective PDE. 所述装置包含一存储GPS SV年历的年历、一存储对应于一个或一个以上GPS SV的星历数据的星历模块、和一至少部分地基于所述年历数据判定复数个可用GPS SV的星历更新模块。 Ephemeris module comprises a memory means of the GPS SV Almanac calendar, a memory corresponding to one or more GPS SV ephemeris data, and at least a part on the almanac data determining a plurality of available GPS SV ephemeris update module. 所述星历更新模块判定有效星历数据是否存储于星历模块中,且选择性地为那些在星历模块中不具有有效星历数据的GPS SV请求星历数据。 The ephemeris update module determines whether valid ephemeris ephemeris data stored in the module, and selectively requesting ephemeris data for those who do not have a GPS SV ephemeris data valid ephemeris module.

另一方面,所揭示的方法和装置为一包括一年历和一星历模块的定位实体的使用。 On the other hand, a method and apparatus is disclosed comprising a position determination entity using an almanac and an ephemeris module. 所述定位实体也包括一位置记录更新模块,其可接收一选择性星历请求消息且响应所述请求发射在选择性请求消息中标识的GPS卫星的星历数据。 The PDE also includes a location record update module that can receive a selective ephemeris request message in response to the request of the GPS satellite ephemeris data message identified selective transmit request.

附图说明 BRIEF DESCRIPTION

鉴于以下详细描述和附图,所揭示的方法和装置的上文所述的方面和其它方面、特点和优势将变得明显。 In view of the following detailed description and accompanying drawings, the above aspects and other aspects, features and advantages of the disclosed method and apparatus will become apparent. 在附图中,类似参考字符标识相同或功能等效元件。 In the drawings, like reference characters identify identical or functionally equivalent elements.

图1是具有定位能力的无线通信系统的原理框图。 FIG. 1 is a block diagram of a wireless communication system having a positioning capability.

图2是选择性地更新星历数据的方法的流程图。 FIG 2 is a flowchart of a method of selectively updating ephemeris data.

图3是显示一选择性星历请求消息中的字段的表。 FIG 3 is a table showing a selective ephemeris request message field.

具体实施方式 detailed description

所揭示的方法和装置的一实施例在一与一无线通信系统通信的移动台中更新SV星历。 One embodiment of the method and apparatus disclosed in one embodiment a wireless communication system and the mobile communication station SV ephemeris update. 移动台判定多个理论上可用于定位的GPS SV。 A plurality of mobile station determination GPS SV theoretically available for targeting. 移动台判定其是否已经为可用SV接收到卫星星历。 The mobile station determines whether it has received satellite ephemeris is available SV. 移动台也判定卫星星历在一预定时间周期上是否有效。 The mobile station also determines whether the satellite ephemeris valid over a predetermined period of time. 移动台可产生一符合标准的星历请求,其选择性地为那些不存在有效星历数据的SV请求星历。 The mobile station may generate a standard ephemeris request, are those that selectively SV ephemeris data does not exist a valid request for ephemeris. 移动台也可选择性地为那些在预定时间周期上星历数据将为无效的SV请求星历。 The mobile station will also optionally be ineffective for those stars in a predetermined time period SV ephemeris requests ephemeris data. 此防止移动台重复下载已经接收的星历数据,且防止移动台为可能不可用于定位的SV下载星历数据。 This prevents the mobile station repeats ephemeris data download that has been received, and to prevent the mobile station may not be available for positioning of the SV to download ephemeris data.

图1为一无线通信系统100的原理框图。 FIG. 1 is a block diagram of a wireless communication system 100. 所述无线通信系统100可为一具有定位能力的无线电话系统。 The wireless communication system 100 may be a wireless telephone system having a positioning capability. 举例来说,无线通信系统100可为一码分多址(CDMA)无线系统,它是根据电信工业协会(TIA)/电子工业联盟(EIA)-95-B,MOBILE STATION-BASE STATION COMPATIBILITY STANDARDFOR DUAL MODE SPREAD SPECTRUM SYSTEMS(双模式扩频系统的移动台-基站兼容性标准)或TIA/EIA/IS-2000,包括TIA/EIA/IS-2000-5,UPPERLAYER(LAYER 3)SIGNALING STANDARD FOR cdma2000 SPREADSPECTRUM SYSTEMS(cdma2000扩频系统的上层(第三层)信令标准)。 For example, wireless communication system 100 may be a Code Division Multiple Access (CDMA) wireless system, which is based on the Telecommunications Industry Association (TIA) / Electronic Industries Alliance (EIA) -95-B, MOBILE STATION-BASE STATION COMPATIBILITY STANDARDFOR DUAL (dual-mode mobile station spread spectrum system - base station compatibility standard) mODE sPREAD SPECTRUM sYSTEMS or TIA / EIA / iS-2000, including TIA / EIA / iS-2000-5, UPPERLAYER (LAYER 3) SIGNALING sTANDARD FOR cdma2000 SPREADSPECTRUM sYSTEMS (cdma2000 spread Spectrum systems upper layer (third layer) signaling standard). 另外,无线通信系统100的定位能力可(例如)根据TIA/EIA IS-801,POSITION DETERMINATION SERVICE STANDARDS FOR DUAL MODESPREAD SPECTRUM SYSTEMS(双模式扩频系统的定位服务标准)操作。 The positioning capability wireless communication system 100 may be (e.g.) in accordance with TIA / EIA IS-801, (Standard Positioning Service System Dual-Mode Spread Spectrum) POSITION DETERMINATION SERVICE STANDARDS FOR DUAL MODESPREAD SPECTRUM SYSTEMS operation. 当然,尽管将无线通信系统100描述为一无线CDMA电话系统,但是无线通信系统100不需要是一CDMA系统,无线通信系统100也不需要是一电话系统。 Of course, although the wireless communication system 100 is described as a CDMA wireless telephone system, wireless communication system 100 need not be a CDMA system, a wireless communication system 100 does not need to be a telephone system. 替代系统可包括(例如)无线定位系统、蓝牙通信系统、符合电气和电子工程师学会(IEEE)802.11的无线网络、无线调度系统、无线的无线电系统及其类似物,或一些用于通信的其它构件。 The system may alternatively comprise (for example) a wireless location system, a Bluetooth communication system, the Radio Systems Electrical and Electronics Engineers (IEEE) 802.11 wireless network, a wireless dispatch system, wireless and the like, or some other means for communication .

无线通信系统100包括一与一基站收发系统(BTS)110通信的移动交换中心(MSC)120,所述基站收发系统110又与一移动台140通信。 The wireless communication system 100 includes a base station with a transceiver system (BTS) Mobile Switching Center (the MSC) 110 120 communication, the communication system 110 and base transceiver station 140 and a mobile. 所述MSC 120也与一定位实体(PDE)130通信。 The MSC 120 is also in communication with a Position Determination Entity (PDE) 130. 尽管在系统100中只显示了一个MSC 120、BTS 110、移动台140和PDE 130,但是系统100可具有复数个每一所述元件且(例如)BTS 110或移动台140的数目不需要成任何特殊比率或数值关系。 Although only a MSC 120 in the system 100, BTS 110, mobile station 140 and PDE 130, the system 100 may have a plurality of elements and each of the (e.g.) the number of BTS 110 or mobile station 140 does not need to be any special numerical relationship or ratio.

移动台140可替代地为一终端、一远程站、一用户设备(UE)、一存取终端、一无线电话、一移动电话、一送受话器、一移动器件、一移动单元、一个人数字助理(PDA)、一计算机及其类似物,或一些用于通信的其它构件。 Mobile station 140 may alternatively be a terminal, a remote station, a user equipment (the UE), an access terminal, a wireless phone, a cellular phone, a handset, a mobile device, a mobile unit, a personal digital assistant (PDA), a computer and the like, or some other means for communication. 移动台140不需要为可移动的,而可为固定的。 The mobile station 140 need not be movable, but may be fixed. 然而,对于很少重新定位的固定终端,定位能力的需要大大减少。 However, for small fixed terminal repositioning requires positioning capability is greatly reduced.

移动台140包括一收发器142,其可为一RF(射频)无线收发器。 The mobile station 140 comprises a transceiver 142, which may (RF) transceiver is a wireless RF. 所述收发器142允许移动台140从基站110接收前向链路信号。 The transceiver 142 allows the mobile station 140 forward link signal received from the base stations 110. 收发器142也通常允许移动台将反向链路信号发射至基站110。 The transceiver 142 also typically allows the mobile station to transmit a reverse link signal 110 to the base station. 收发器142也可经配置以从一定位系统接收信号。 The transceiver 142 may also be configured to receive signals from a positioning system. 收发器142可(例如)经配置以从GPS人造卫星(SV)接收信号。 The transceiver 142 may be (e.g.) configured to receive from the GPS satellite (SV) signals.

收发器142通常将由移动台140接收的前向链路信号转换为基带信号。 By the mobile transceiver 142 is typically a baseband signal before the conversion station forward link signal 140 received. 基带信号可为数据,例如定位信息。 The baseband data signal may be, for example positioning information.

一处理器152耦接至收发器142且可处理接收到的数据且也可执行与收发器142相关联的功能。 A processor 152 coupled to transceiver 142 and may process the received data and also perform the function of the transceiver 142 associated. 处理器152耦接至存储器154。 The processor 152 is coupled to the memory 154. 处理器152可存储数据于存储器154中并存取存储器154中的数据。 The processor 152 may store data in the memory 154 and access the data memory 154. 处理器152也可根据存储于存储器154中的处理器可读指令操作。 The processor 152 may also be stored in the operation memory 154 of the processor-readable instructions.

移动台140也包括一可跟踪相对于时间标准的时间的时钟144。 The mobile station 140 also includes a clock 144 may track time with respect to the standard time. 举例来说,所述时钟144可用于跟踪GPS时间、CDMA系统时间或通用协调时间(Universal Coordinated Time)(UTC)。 For example, the clock 144 may be used to track the GPS time, CDMA system time or Coordinated Universal Time (Universal Coordinated Time) (UTC). 时钟144可用于(例如)判定前向链路信号(例如前向链路导频信号)的到达时间。 Arrival time clock 144 may be used (e.g.) before determining forward link signals (e.g. the forward link pilot signal prior to conduction) of.

移动台140也包括一年历146,其为通常描述GPS SV星座的位置的一组数据。 The mobile station 140 also includes a calendar 146, which is generally described as a set of data constellation of GPS SV position. 移动台140可使用年历信息估计每一GPS SV的位置。 Mobile station 140 may estimate the position of each GPS SV using almanac information. 移动台140可使用存储于年历146中的信息连同来自时钟144的对GPS时间的认识,预测GPS SV的可用性。 Mobile station 140 may be stored in the calendar 146, together with knowledge of GPS time information from the clock 144, the prediction of the availability of GPS SV. 每一GPS SV周期性地发射年历数据。 Each GPS SV periodically transmits almanac data. 移动台140可直接通过接收并解码GPS SV发射接收年历数据。 Mobile station 140 may be received directly transmit the almanac data by receiving and decoding the GPS SV. 然而,如前文所述,来自GPS SV的数据率相对于通过无线通信系统100可达到的数据率可以为低的。 However, as previously described, the data rate from the GPS SV with respect to the wireless communication system 100 may achieve data rates may be low. 因此,移动台140可替代地从无线通信系统100中的PDE 130接收年历146的数据。 Accordingly, the mobile station 140 may alternatively receive the almanac data 146 from the wireless communication system 100. PDE 130. 举例来说,移动台140可从PDE 130下载年历数据并将其存储于年历146中。 For example, mobile station 140 may download the almanac data from the PDE 130 and 146 stored in the almanac. 替代地,年历146可建构于存储器154中且移动台可将年历数据存储于存储器154的一预定部分中。 Alternatively, the calendar 146 may be constructed in the memory 154 and the mobile station almanac data may be stored in a predetermined portion of the memory 154.

年历146包括粗略预测每一SV的位置的数据。 Prediction data 146 includes almanac coarse location of each SV. 星历数据用于增加年历数据以提供一特殊SV的位置的准确判定。 Ephemeris data for increasing the almanac data to provide an accurate determination of the position of a particular SV. 移动台140包括一耦接至收发器142和处理器152的星历模块148以存储星历数据。 The mobile station 140 comprises a transceiver coupled to the module 142 and the ephemeris 148 of the processor 152 to store the ephemeris data. 与年历数据类似,移动台140可直接从GPS SV接收星历数据并将其存储于星历模块148中。 Similar to the almanac data, the mobile station 140 may be receiving data directly from the GPS SV ephemeris and stored in the module 148 in the ephemeris. 可将星历模块148建构为存储器154的一部分。 Ephemeris module 148 may be constructed as part of the memory 154.

替代地,移动台140可通过基站110从PDE 130接收星历数据。 Alternatively, the mobile station 140 may be receiving ephemeris data from the PDE 130 through the base station 110. 如将在下文进一步详细描述,移动台140可选择性地为那些被判定为可用的SV请求星历数据。 As will be described in further detail below, the mobile station 140 is selectively determined to be available to those who request SV ephemeris data. 移动台的选择性的请求星历数据的能力最小化了发射的星历数据的量。 Ability to selectively request ephemeris data of the mobile station minimizes the amount of transmitted ephemeris data. 另外,移动台140中的年历146和星历模块148的组合允许移动台140在移动台140位于基站110的覆盖范围外或以其它方式不与PDE 130通信的情况下独立计算移动台140的位置。 Further, the combination of the mobile station 140 almanac 146 and ephemeris module 148 allows the mobile station 140 in the mobile station 140 located outside the coverage of base station 110 or not independent calculating case PDE communication 130 otherwise the mobile station 140 .

移动台140也包括一星历更新模块150。 The mobile station 140 also includes a module 150 to update ephemeris. 由SV发射的星历数据包括一“星历时间”字段,toe。 SV ephemeris data by a transmission comprising a "time of ephemeris" field, toe. 所述星历时间是一指示星历有效期的中点的时间戳。 The ephemeris midpoint time is a time stamp indicating a validity of ephemeris. 通常,星历数据有效时间为四小时,但在极个别情况下,星历数据的有效时间可高达六小时。 Typically, the ephemeris data is valid for four hours, but in extreme cases, the effective time of the ephemeris data can be up to six hours. 因此,通常星历数据的有效时间在星历时间之前为两小时的周期且在星历时间后为两小时。 Accordingly, the effective time is generally ephemeris data before ephemeris time is two hours and after periodic ephemeris time is two hours.

星历更新模块150周期性地核对星历数据的有效性。 150 ephemeris update module periodically check the validity of ephemeris data of the satellite. 举例来说,星历更新模块150可以预定时间间隔(例如每10分钟)核对星历数据的有效性。 For example, the ephemeris update module 150 may be a predetermined time interval (e.g., every 10 minutes) to check the validity of ephemeris data. 替代地,星历更新模块150可在预定事件(例如始发呼叫或呼入)时核对星历数据的有效性。 Checking the validity of ephemeris data when Alternatively, the ephemeris update module 150 may (e.g., an originating call or incoming call) a predetermined event. 在其它实施例中,星历更新模块150可根据一可产生固定、随机或伪随机核对及更新时间间隔的算法核对星历数据的有效性。 In other embodiments, the ephemeris update module 150 may generate may be fixed according to a validity of ephemeris data collation algorithm random or pseudorandom verification and update interval.

在核对过程中,星历更新模块150存取年历146中的数据以判定哪些SV可能在一预定截止高度角之上。 In the collation process, the ephemeris data 146 to update the calendar module 150 to determine which access may SV at a predetermined height above the cut-off angle. 所述截止高度角可用于(例如)屏蔽可能不可用的SV。 The elevation angle may be used (e.g.) SV shield may not be available. 不可用SV可包括那些在预测地平线以下或非常接近预测地平线的SV。 Unavailable SV SV may include those in the prediction horizon or very near the horizon prediction. 因此,星历更新模块150可将零度截止高度角用于判定哪些SV在预测地平线之上。 Thus, ephemeris update module 150 may be used to determine zero elevation angle above the horizon in which predicted SV.

星历更新模块150也可使用一预定独立时间,所述预定独立时间可(例如)存储于存储器154中。 Ephemeris update module 150 may also be used independently of a predetermined time, the predetermined time may be independent (for example) stored in the memory 154. 所述独立时间表示移动台140应能够独立于PDE130的辅助准确地判定移动台140的位置的持续时间。 The mobile station 140 independently represent time should be capable of independently determining the duration of the mobile station 140 position accurately in the auxiliary PDE130. 独立时间可为(例如)30分钟或60分钟。 Independent time may be (e.g.) 30 minutes or 60 minutes.

星历更新模块150也判定在一等于现在时间加上独立时间的将来时间时哪些SV将在截止高度角之上。 Ephemeris update module 150 can also determine when a time equal to the current time plus independent future time at which the SV elevation above the cutoff. 因此,星历更新模块通过判定哪些SV当前在截止高度角之上且哪些SV在一独立时间后将在截止高度角之上来判定哪些SV为可用的。 Thus, by determining the ephemeris update module which is currently in SV elevation above the cut-off and SV after which time a separate elevation angles up to determine which of the available SV.

星历更新模块150存取星历模块148以判定星历数据是否可用于任何标识的可用SV。 Ephemeris ephemeris update module 150 access module 148 to determine whether ephemeris data may be used to identify any available SV. 如果有效星历数据不可用于任何标识的SV,那么星历更新模块150产生一对星历数据的请求,所述请求被发射至PDE 130。 If valid ephemeris data for the SV is not any identity, then the ephemeris update module 150 generates one pair of ephemeris data request, the request is transmitted to the PDE 130. 如果有效星历数据可用于一SV但在独立时间的逾期之前将变得无效,那么星历更新模块150产生对所述SV的星历数据的请求。 If valid ephemeris data is available for a separate SV but before the late time becomes invalid, then the ephemeris update module 150 generates a request for ephemeris data for the SV. 如果自与数据相关联的星历时间起已经过去多于120分钟,那么星历更新模块150可为一SV判定星历数据为无效。 If the time since the ephemeris data associated with more than 120 minutes has passed, then the ephemeris update module 150 may be a SV ephemeris data is determined to be invalid.

由星历更新模块150执行的一算法的一实施例可以概括为以下伪代码:在年历中的所有SV上循环{若(星历为不可用)或(自t_oe+PDE_INDEPENDENCE_TIME起的时间>120){计算当前时间的SV位置若(位置在截止高度角之上){设定位以为此SV请求星历}否则{计算当前时间+PDE_INDEPENDENCE_TIME的SV位置若(位置在截止高度角之上){设定位以为此SV请求星历}}}}移动台140与基站110通信。 Example by a an algorithm ephemeris update module 150 performs may be summarized as the following pseudo-code: circulating almanac on all SV {if (ephemeris is unavailable) or (from t_oe + PDE_INDEPENDENCE_TIME starting time> 120) {calculate current time if SV position (a position above the elevation mask) {bit is set to request the ephemeris for this SV} else {compute the current time if the PDE_INDEPENDENCE_TIME + SV position (a position above the elevation mask) provided { For this purpose positioned SV ephemeris request}}}} 140 110 mobile stations communicate with base stations. 基站110可为(例如)一BTS、一存取点、一中心调度及类似物,或一些用于通信的其它集中构件。 The base station 110 may be (e.g.) a the BTS, an access point, a central dispatch and the like, or some other means for communicating the concentrate. 基站110与移动台140之间的通信链路通常为一无线链路。 The communication link between the base station 110 and the mobile station 140 is typically a wireless link. 基站110在一个或一个以上前向链路信道上将从PDE 130请求的星历和年历数据发射至移动台140。 In a base station 110 or more prior to a request from the PDE 130 to the link channel ephemeris and almanac data transmitted to the mobile station 140. 移动台140在一个或一个以上反向链路信道上将对年历和星历数据的请求发射至基站110。 In the mobile station 140 requests the one or more reverse-link channel will almanac and ephemeris data transmitted to the base station 110. 基站110将所述请求传输至PDE 130。 The base station 110 transmits the request to the PDE 130. 基站110可为(例如)一符合一无线通信标准(例如TIA/EIA-95-B或TIA/EIA/IS-2000)的无线电话基站。 The base station 110 may be (e.g.) a line with a wireless communication standard (e.g., TIA / EIA-95-B or TIA / EIA / IS-2000) radio telephone base station.

基站110与一移动交换中心(MSC)120通信,所述MSC 120用作无线通信系统100与外部通信系统(例如未图示的一公共电话交换网,PSTN)之间的接口。 Communicate with a mobile switching center (MSC) 120 base station 110, an interface between the MSC 120 as the wireless communication system 100 with an external communication system (not shown, e.g. a Public Switched Telephone Network, PSTN). 替代地或另外,MSC 120可提供无线通信系统100与一数据网络(例如互联网)之间的接口。 Alternatively or in addition, MSC 120 may provide an interface between the wireless communication system 100 with a data network (e.g. the Internet).

MSC 120也与一PDE 130通信。 MSC 120 is also in communication with a PDE 130. PDE 130与MSC 120之间的链路可为无线链路或有线链路。 The link between the MSC 120 PDE 130 may be a wireless or wired link. 另外,尽管显示PDE 130与MSC 120耦接,但是PDE130可耦接至基站110且PDE 130与MSC 120之间的通信链路可通过基站110发生。 Further, although the display PDE 130 coupled to the MSC 120, but PDE130 base station 110 may be coupled to PDE 130 and the communication link between the base station 120 MSC 110 may occur through. 其它构型也为可能。 Other configurations are also possible. PDE 130包括一年历132、星历134、一位置记录更新模块136和一定位模块138。 PDE 130 includes an almanac 132, ephemeris 134, a location update module 136 and a recording location module 138.

PDE 130可用于部分地基于由移动台140提供的信息判定移动台140的位置。 PDE 130 may be based in part on information provided by the mobile station 140 determines the location of the mobile station 140. 举例来说,移动台140可判定至多个定位源(例如GPS卫星)的伪距离,且可将伪距离信息发射至PDE 130。 For example, mobile station 140 may be determined to a plurality of locating sources (e.g., GPS satellites) pseudoranges and pseudorange information may be transmitted to the PDE 130. 随后PDE可在定位模块138中判定移动台140的位置。 PDE may then determine the position of the mobile station 140 in the positioning module 138.

PDE 130也与定位源通信。 PDE 130 is also in communication with the source positioning. 举例来说,PDE 130可包括一GPS接收器(未图示)以从GPS SV接收年历和星历数据。 For example, PDE 130 may comprise a GPS receiver (not shown) for receiving data from the GPS SV ephemeris and almanac. 随后PDE 130可将SV数据存储于年历132和星历134中。 SV then PDE 130 may store data in the almanac 132 and the ephemeris 134. 因为PDE 130几乎可与SV连续通信,所以PDE130中的年历132和星历134可能含有最新数据。 Since almost PDE 130, the PDE130 the almanac 132 and the ephemeris 134 may contain the latest data in continuous communication with the SV. 另外,PDE 130通常可将年历132和星历134数据以一大于SV使用的速率的数据率传输至一移动台140。 In addition, PDE 130 may generally almanac 132 and the ephemeris 134 is greater than a data transmission rate of SV using a data rate to mobile station 140. 因此,移动台140从PDE 130获得年历和星历数据比从SV搜索、获得并下载数据快。 Accordingly, the mobile station 140 to obtain almanac and ephemeris data from the PDE 130 is faster than the SV search, obtain and download the data. 当然,年历132不需要局限于SV数据,而是可包括其它定位信号源(替代地称为伪卫星)的定位信息。 Of course, SV almanac data 132 need not be limited, but positioning information may comprise other positioning signal source (alternatively referred to as pseudo satellites). 所述伪卫星可包括(例如)差分GPS定位源或其它定位信标或源。 The Pseudolites may comprise (e.g.) differential GPS positioning, or other sources or source localizer.

位置记录更新模块136可经配置以从移动台140接收选择数据或记录请求。 Location history update module 136 can receive from the mobile station 140 selects a data recording request or configured. 位置记录更新模块136可基于所述请求判定由移动台140请求的SV星历数据。 Location history update module 136 may be determined based on the request by the mobile station SV ephemeris data 140 requested. 随后位置记录更新模块136可存取星历134并检索移动台140所请求的星历数据的至少一部分。 Then the location record update module 136 may access and retrieve ephemeris 134 of the mobile station 140 at least a portion of the requested ephemeris data. 随后位置记录更新模块可产生一具有请求的数据的消息并将所述消息发射至移动台140。 Then the location record update module may generate a message and the message having a data transmission request to the mobile station 140. 在一实施例中,位置记录更新模块136检索所有星历134数据并删除数据以排除移动台140未为其请求数据的任何SV的星历数据。 In one embodiment, the recording location update module 136 retrieves all ephemeris data 134 and deletes the data to exclude the mobile station 140 ephemeris data for any SV not requested for the data.

图2显示在一移动台140中执行的一星历更新方法200的一实施例。 2 shows a ephemeris updating method performed in a mobile station 140 in embodiment 200 of an embodiment. 所述方法200可(例如)由图1的无线通信系统100中的移动台140执行。 The method 200 may (for example) executed by the wireless communication system 100. The mobile station 140 of FIG. 1. 方法200开始于移动台最初请求年历数据的方块202。 The method begins at block 200 the mobile station 202 to the almanac data originally requested. 移动台可将一年历数据请求消息发射至PDE。 The mobile station may transmit a request message to the almanac data PDE. 移动台可周期性地请求年历数据,或可在发生一事件时请求年历数据。 The mobile station may periodically request almanac data, almanac data, or may be requested when an event occurs. 举例来说,移动台可在上电或每次指令移动台进入定位模式时请求年历数据。 For example, the mobile station may request almanac data at power-up or each time the instruction enters the mobile station positioning mode.

移动台接下来进入其等待以接收年历数据的方块204。 Next, the mobile station enters its waiting almanac data received in block 204. 移动台可从PDE接收年历数据或可接收一些使移动台重复对年历数据的请求的其它指示。 The mobile station may receive the almanac data may be received from a PDE, or some other indication that the mobile station repeats the request for almanac data.

一旦接收到年历数据,移动台就进入判定方块210,其中移动台判定其是否处于定位模式。 Once the almanac data is received, the mobile station proceeds to decision block 210, where the mobile station determines whether it is in a positioning mode. 定位模式可为一个或一个以上操作模式,其中为允许相对较快的定位,移动台周期性地更新星历。 Positioning mode may be one or more than one mode of operation, wherein relatively fast to permit positioning of the mobile station is periodically updated ephemeris. 举例来说,定位模式可包括一跟踪模式,在所述跟踪模式中,移动台周期性地执行定位。 For example, the positioning modes may include a tracking mode, in the tracking mode, the mobile station periodically performs positioning. 举例来说,在跟踪模式中,移动台每10分钟可判定一定位。 For example, in the tracking mode, the mobile station may be positioned a determined every 10 minutes. 定位模式也可包括一热身(staywarm)模式,在所述热身模式中,移动台更新星历数据以允许准确定位而没有与年历和星历下载相关联的延迟。 Positioning mode may also include a warm-up (staywarm) mode, the warm-up mode, the mobile station updates the ephemeris data to enable accurate positioning without the almanac and ephemeris download the associated delays.

如果移动台不在定位模式中,那么移动台可下电或可关闭定位能力。 If the mobile station is not positioning mode, the mobile station may be powered down or turned off positioning capabilities. 在此情况下,移动台进入完成所述方法的方块260。 In this case, the mobile station proceeds to block 260 to complete the process.

如果移动台在定位模式中,那么移动台进入移动台判定SV的位置的方块222。 If the mobile station in the positioning mode, the mobile station enters the mobile station SV determines the position of the block 222. 移动台可(例如)使用年历数据预测SV的粗略位置。 The mobile station may (e.g.) use the almanac data of the predicted coarse location SV. 在判定SV位置后,移动台进入方块224,其中移动台至少部分地基于所述位置判定哪些SV为理论上可用。 After determining the position of SV, the mobile station proceeds to block 224, where the mobile station is determined in part based on the location SV of which at least theoretically available. 移动台对SV的可用性的判定只是理论上的,因为移动台可能不知道其确切位置或移动台周围的地形的类型,且因此可能不知道哪些SV在地平线以下。 The mobile station determine the availability of SV's only theoretical, since the mobile station may not know the type of terrain surrounding its exact location or mobile stations, and therefore may not know what SV below the horizon. 另外,移动台可能不能判定来自一个或一个以上SV的信号是否为阻塞的或以其它方式不可用。 Further, the mobile station may not determine whether a signal from one or more SV is not blocked or otherwise used.

移动台可基于移动台位置的粗略估计与一截止高度角判定SV的可用性。 And a rough estimate of the mobile station elevation angle may be determined based on mobile station location SV of availability. 可(例如)基于先前定位,或可基于与移动台通信的基站或转发器的位置导出移动台位置的粗略估计。 It may be (e.g.) based on a previous positioning, or may be roughly estimated based on the base station or repeater and a mobile station in communication deriving a position of the mobile station position. 截止高度角可用于排除那些不在所述截止高度角的参数中的SV。 Elevation angle can be used to exclude the parameters that are not in the elevation angle SV. 举例来说,只有那些预测为在地平线或一些其它高度之上的SV可由移动台判定为可用。 For example, only those predicted by the mobile station SV above the horizon or some other available height is determined.

在判定可用SV后,移动台进入判定方块230,其中移动台判定可用SV的存储的星历数据是否有效。 After determining the available SV, the mobile station proceeds to decision block 230, where the mobile station determines whether the available storage SV ephemeris data is valid. 移动台可比较与星历数据相关联的“星历时间”以判定星历数据当前是否有效且判定星历在将来的一预定时间,independence_time是否有效。 Comparing the mobile station may be associated with the ephemeris data "time of ephemeris" ephemeris data to determine whether the currently valid ephemeris and determines a predetermined time in the future, independence_time is valid. independence_time可为(例如)20、30、45或60分钟,或一些其它时间增量。 independence_time may be (e.g.) 20, 30 or 60 minutes, or some other time increment. 通常,independence_time小于120分钟。 Typically, independence_time less than 120 minutes. 如果星历对所有可用SV有效,那么移动台进入方块260且所述方法完成。 If the ephemeris is valid for all the available SV, the mobile station proceeds to block 260 and the method is completed.

然而,如果星历当前为无效或在independence_time前将逾期,那么移动台进入方块240且为数据无效或将无效的SV请求星历。 However, if the ephemeris currently invalid or expired before independence_time, the mobile station proceeds to block 240 and the data is not valid or an invalid request SV ephemeris. 移动台可(例如)产生一选择性地请求所需星历数据的符合标准的请求。 The mobile station may (e.g.) to produce a standard request selectively requesting ephemeris data required. 随后移动台可将所述请求发射至PDE。 Then the mobile station may transmit the request to the PDE.

随后移动台进入判定方块250以判定是否接收到有效星历数据。 Then the mobile station proceeds to decision block 250 to determine whether a valid ephemeris data. 移动台可在从PDE接收到消息时执行核对或可在发送请求后一预定超时周期执行确认。 The mobile station may be performed to check upon receiving a message from the PDE or a predetermined time-out period after sending the request to perform validation.

移动台可从PDE请求星历数据但可不接收到所述星历数据。 The mobile station may request the ephemeris data from the PDE, but may not receive the ephemeris data. 举例来说,如果PDE为请求的SV的一子集发送SV星历数据,那么此可发生。 For example, if the PDE SV transmits ephemeris data are a subset of SV a request, then this can occur. 替代地,如果PDE将一拒绝消息发送至移动台,那么移动台可不接收到请求的星历数据。 Alternatively, if the PDE transmits a reject message to the mobile station, the mobile station may not receive the ephemeris data request. 如果(例如)SV在地平线以下且PDE缺乏当前星历或如果SV为不健康,那么PDE可拒绝向移动台发射星历数据。 If (for example) and SV PDE lack of current ephemeris or if SV unhealthy below the horizon, the PDE may refuse to transmit data to the mobile station ephemeris.

如果移动台接收到对于所有请求的SV有效的星历,那么移动台前进至方块260且方法200完成。 If the mobile station receives the SV ephemeris valid for all requests, then the mobile station proceeds to block 260 and the method 200 is completed. 替代地,如果移动台没有接收到对于一个或一个以上请求的SV有效的星历数据,那么移动台前进至方块252。 Alternatively, if the mobile station does not receive a valid SV ephemeris for one or more data request, then the mobile station proceeds to block 252.

在方块252处,移动台等待一预定等待周期且随后为那些未接收到其有效星历的SV重新请求星历数据。 At block 252, the mobile station waits a predetermined wait period and then re-requests ephemeris data for those who have not received their effective SV ephemeris. 预定等待周期可约为一秒、几秒或几分钟的分数。 Waiting a predetermined period may be about one second fraction, seconds or minutes.

随后移动台返回方块240以重新请求先前未成功接收的星历数据。 The mobile station then returns to block 240 to re-request the ephemeris data previously unsuccessfully received. 如果PDE报告SV中的一个为不健康的,那么只有在移动台将请求其它SV星历数据的情况下移动台才可重新请求与所述不健康SV相关联的星历数据。 If SV is a PDE report unhealthy, then only the mobile station requests the mobile station without the other SV ephemeris data before re-request the ephemeris data associated with unhealthy SV. 选择性星历请求消息可使得对一个以上SV的星历数据的请求与对单个SV的星历数据的请求相比不消耗任何额外带宽。 Selective ephemeris request message may request that the ephemeris data for a SV or more compared with a request for ephemeris data for a single SV does not consume any additional bandwidth. 当然,基站发射多个SV星历所需的带宽通常大于发射单个SV星历数据所需的带宽。 Of course, the base station transmits a plurality of SV ephemeris is typically greater than the bandwidth required to transmit the bandwidth required for a single SV ephemeris data.

预想方法200的其它实施例。 Other embodiments envisioned the method of Example 200. 举例来说,一旦移动台成功地接收到年历数据,移动台就可周期性地检查以了解其是否处于定位模式中并为可用SV更新星历数据。 For example, once the mobile station successfully receives the almanac data, the mobile station can periodically check to see whether it is in a positioning mode and to update the available SV ephemeris data. 移动台可(例如)判定可用SV并每10分钟更新星历数据。 The mobile station may (e.g.) is determined and updated available SV ephemeris data every 10 minutes.

在另一实施例中,在方块222中,移动台可最初以从现在时间开始的预定数目的规则时间间隔判定所有卫星位置。 Embodiment, in block 222, the mobile station may be initially at regular time from a predetermined number of time intervals now determines the position of all satellites in another embodiment. 所述预定数目的时间可足以要求移动台判定直至一将来的至少independence_time的时间时的SV位置。 Said predetermined number of time may be sufficient to require the mobile station SV determines the position of the at least independence_time until a time when the future. 随后,在下一星历更新时间间隔,移动台只需要判定一将来的independence_time的时间时的SV位置。 Subsequently, at the next ephemeris update interval, the mobile station only when necessary to determine the position of SV independence_time a future time.

图3是显示一选择性星历请求消息中的字段的一部分的表。 FIG 3 is a table showing a part of a selective ephemeris request message field. 移动台可经配置以产生一符合当前标准的选择性星历请求消息。 The mobile station may be configured to generate a current standards selective ephemeris request message. 举例来说,选择性星历请求消息可符合TIA/EIA/IS-801。 For example, selective ephemeris request message may conform to the TIA / EIA / IS-801.

所述TIA/EIA/IS-801标准定义一可由一移动台发送的定位数据消息(PDDM)300。 The TIA / EIA / IS-801 standard defines a positioning data message transmitted by a mobile station (PDDM) 300. 所述PDDM 300包括一定位消息类型字段,PD_MSG_TYPE310,其标识一种类型的定位数据消息。 The PDDM 300 includes a positioning message type field, PD_MSG_TYPE310, which identifies a type of positioning data message. 所述字段的长度为8位。 The length field is 8 bits. 字段的默认值为0X00,其中前缀“0X”表示十六进制数。 The default field is 0X00, where the prefix "0X" represents a hexadecimal number. 然而,所述标准提供特定制造商PDDM定义。 However, the standard provides for the definition of a particular manufacturer PDDM. 举例来说,值0XC0可表示一制造商所有权消息。 For example, the value may represent a 0XC0 manufacturer proprietary message.

REQ_TYPE 320字段标识由移动台请求的数据的类型。 REQ_TYPE 320 field identifies the type requested by the mobile station data. REQ_TYPE值“1001”指示请求GPS星历。 REQ_TYPE value "1001" indicates that the request GPS ephemeris. 然而,当此REQ_TYPE与上文所标识的预定义的制造商所有权PD_MSG_TYPE值一起使用时,所述消息可指示所述请求为一选择性SV星历请求消息。 However, when used with this REQ_TYPE predefined manufacturers identified above ownership PD_MSG_TYPE value, the message may indicate that the request is a selective SV ephemeris request message. 所述消息可在PDDM 300的REQ_PAR_RECORD 340字段中指示请求的特定SV星历。 The message may indicate the SV specific ephemeris request in REQ_PAR_RECORD 340 PDDM 300 in field.

REQ_PAR_RECORD 340字段的长度为40位。 REQ_PAR_RECORD 340 length field is 40 bits. 40位的值描述请求的SV星历。 40-bit value SV ephemeris request described. REQ_PAR_RECORD 340字段包括子字段,所述子字段包括AB_PAR_REQ 342、SV_MASK 344和一保留346字段。 REQ_PAR_RECORD 340 field includes a subfield, the subfield comprises AB_PAR_REQ 342, SV_MASK 344 346 and a reserved field.

AB_PAR_REQ 342子字段的长度只有一位且指示移动台是否请求α(Alpha)/β(Beta)参数。 AB_PAR_REQ 342 length sub-field and indicates only a / β (Beta) whether the mobile station requests the parameter α (Alpha). 如果请求α/β参数,那么移动台将所述字段设定为“1”,否则移动台将所述字段设定为“0”。 If the request α / β parameters, then the mobile station to the field is set to "1", the mobile station or the field is set to "0."

<<<请提供α/β参数的定义>>> & Lt; & lt; & lt; Please provide α / β defined parameter & gt; & gt; & gt;

SV_MASK 344子字段的长度为32位。 SV_MASK 344 subfield length is 32 bits. 子字段的值标识为其请求星历的GPS卫星的子集。 Value identifies a subset of its sub-field of GPS satellite ephemeris request. 举例来说,最低有效位,位0可表示SV 1且最高有效位,位31可表示SV 32。 For example, the least significant bit, bit 0 may represent SV 1 and the most significant bits, 31 bits may represent SV 32. 在一实施例中,位值“1”指示所述SV的数据被请求。 In one embodiment, the bit value "1" indicating that the requested data is SV.

REQ_PAR_RECORD 340字段也包括7位,其为保留346。 REQ_PAR_RECORD 340 also includes a field 7, which is reserved 346. 所述保留位允许将来的定义和扩充。 The reserved bit for future definition and allow extension. 移动台可将保留346位设定为“0000000”。 The mobile station 346 may be reserved to "0,000,000." 如果存在星历数据可用的GPS SV之外的源,所述保留位可(例如)附加于SV_MASK 344子字段。 If the ephemeris data source other than GPS SV present available, the reserved bit may be (e.g.) in addition to the SV_MASK 344 subfield.

接收选择性星历请求消息的PDE可以一未经请求的提供GPS星历(Provide GPS Ephemeris)消息响应。 Receiving ephemeris request message selective PDE may provide GPS ephemeris (Provide GPS Ephemeris) in response to an unsolicited message. 然而,在响应消息中,PDE可删除未在PDDM 300消息的SV_MASK 344子字段中请求的任何SV的数据。 However, in the response message, a PDE data may be deleted any SV not requested in the SV_MASK 344 subfield PDDM 300 message.

因此,已经描述了一种用于在移动台中选择性地更新星历数据的方法和装置。 Having thus described a method and apparatus in a mobile station for selectively updating ephemeris data. 一种方法允许一移动台选择性地请求并接收星历数据。 A method for allowing a mobile station to selectively request and receive ephemeris data. 选择性请求和发射星历数据允许最优化移动台与基站之间的通信带宽,因为重复的星历数据和不可用的SV的数据从通信消息中排除。 And selectively transmitting requests ephemeris data allow optimization of communication bandwidth between a mobile station and a base station, since the ephemeris data is repeated and the data is not available SV excluded from communication messages.

因此移动台可下载可用SV的星历数据并独立于与系统的通信链路判定移动台的位置。 Thus the mobile station to download ephemeris data may be available independently of the position of the SV and the mobile station determines that the communication link system. 选择性星历请求可经配置以符合目前现存的标准,因此允许所述方法和装置建构于现存系统中。 Selective ephemeris request may be configured to conform to current existing standards, thus allowing the method and apparatus built upon existing systems.

尽管已经相对于无线电话系统,且特别是,利用GPS卫星定位的CDMA电话系统描述了所述方法和装置,但是所述方法和装置可建构于其它类型的系统中。 Although with respect to a wireless telephone system, and in particular, the use of GPS satellites CDMA phone system the method and apparatus are described, but the method and apparatus may be constructed in other types of systems. 所述SV并不局限于GPS SV中,且不需要是卫星,而可为源位置变化的任何类型的定位信号源。 The SV is not limited to the GPS SV, the satellite and need not, but may change as a source of any type of position location signal sources. 举例来说,所述卫星可为全球轨道导航卫星系统(Global Orbiting Navigation Satellite System)(GLONASS)人造卫星。 For example, the satellite may be a Global Navigation Satellite System (Global Orbiting Navigation Satellite System) (GLONASS) satellites.

已经相对于多种器件或元件描述了电连接、耦接和连接。 It has with respect to various devices or elements described electrical connection, and the connection coupling. 所述连接和耦接可为直接或间接。 The connector and coupling may be direct or indirect. 第一器件与第二器件之间的连接可为直接连接或可为间接连接。 Connection between the first device and the second device may be connected directly connected or may be indirectly. 间接连接可包括可将信号从第一器件处理至第二器件的插入元件。 Indirect connection may comprise signal processing may be inserted from the first device to the second element of the device.

已经相对于多种过程、方法或流程图描述了信号或处理流程。 We have with respect to the various processes, or methods described flowchart or signal processing flow. 从一个步骤或方块至下一个步骤或方块的流程可为直接或间接。 Flow from one step to the next step or block or block may be direct or indirect. 间接连接可包括插入方块,其可在一随后方块之前处理来自所述一个方块的信号。 Indirect connection may include inserting a block, which can be processed prior to a signal from the block in a subsequent block. 另外,图中所示的方块或步骤的排列不必要指示顺序。 Further, arrangement of blocks or steps shown in FIG unnecessary indicate the order. 在一些情况下,在不影响过程或方法的结果的前提下,可重新排序所述方块、过程、步骤或方法。 In some cases, without affecting the result of the process or method can reorder the block, process, or method steps.

所属领域的技术人员应了解可使用多种不同技术和技艺中的任何一种表示信息和信号。 Those skilled in the art can be understood using any of a variety of different technologies and techniques that information and signals. 举例来说,整个上文的描述可参考的数据、指令、命令、信息、信号、位、符号和芯片可由电压、电流、电磁波、磁场或磁性粒子、光场或光粒子、或其任何组合表示。 For example, throughout the above description may refer to data, instructions, commands, information, signals, bits, symbols, and chips may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof .

所属领域的技术人员应进一步了解,可将结合本文所揭示的实施例描述的多种说明性逻辑方块、模块、电路和算法步骤建构为电子硬件、计算机软件或两者的组合。 Those skilled in the art will further appreciate that the herein disclosed in conjunction with various illustrative logical blocks described embodiments, modules, circuits, and algorithm steps constructed as electronic hardware, computer software, or combinations of both. 为清楚地说明硬件和软件的此可互换性,上文已经大体上按照它们的功能性描述了多种说明性组件、方块、模块、电路和步骤。 To clearly illustrate this hardware and software interchangeability has been generally in terms of their functionality describes various illustrative components, blocks, modules, circuits, and steps. 这类功能性是建构为硬件还是软件取决于特殊应用和强加于整个系统上的设计制约。 Such functionality is constructed as hardware or software depends on the specific design constraints imposed on the overall system and application. 所属领域的技术人员可以各不相同的方式为每一特殊应用建构所描述的功能性,但是这些建构决策不应解释为导致脱离所揭示的方法和装置的范畴。 Those skilled in the art can be different way for each particular application of the functional construction of the described construction of these decisions should not be interpreted as causing departing from the scope of the method and apparatus disclosed.

结合本文所揭示的实施例描述的多种说明性逻辑方块、模块和电路可以一通用处理器、一数字信号处理器(DSP)、一专用集成电路(ASIC)、一现场可编程门阵列(FPGA)或其它可编程逻辑器件、离散门或晶体管逻辑、离散硬件组件、或设计为执行本文所述的功能的其任何组合来建构或执行。 It disclosed herein in conjunction with various embodiments described illustrative logical blocks, modules, and circuits may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA ) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or designed to perform the functions described herein, or any combination thereof to construct performed. 一通用处理器可为一微处理器,但替代地,所述处理器可为任何处理器、控制器、微控制器、或状态机。 A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine. 一处理器也可建构为计算器件的组合,例如一DSP和一微处理器的组合、复数个微处理器、结合一DSP核心的一个或一个以上微处理器、或任何其它这类构型。 Processor may also be constructed as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, in conjunction with a DSP core, a one or more microprocessors, or any other such configuration.

结合本文所揭示的实施例所述的方法或算法的步骤可直接在硬件中、在由处理器执行的软件模块中、或在所述两者的组合中实施。 Steps of a method or algorithm described in the embodiment disclosed herein may be implemented in hardware, in a software module executed by a processor, or in a combination of the direct embodiment of the two. 软件模块可位于RAM存储器、闪速存储器、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、一活动磁盘、一CD-ROM、或此项技术中已知的任何其它形式的存储媒体。 A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. 一例示性存储媒体耦接至处理器,这样所述处理器就可从所述存储媒体读取信息并将信息写入所述存储媒体。 An exemplary storage medium is coupled to the processor such that the processor can read information from said storage medium into said storage medium. 替代地,存储媒体可与处理器成为一体。 Alternatively, the storage medium may be integral to the processor. 处理器和存储媒体可位于ASIC中。 Processor and the storage medium may reside in an ASIC.

提供所揭示的实施例的上文描述以使所属领域的技术人员都能进行或使用本发明。 Providing the embodiments disclosed above described embodiments to enable those skilled in the art can make or use the present invention. 对所述领域的技术人员来说,对这些实施例的多种修正将显而易见,且在不脱离本发明的精神或范畴的前提下,本文所定义的一般原理可应用至其它实施例。 To those skilled in the art that various modifications to these embodiments will be apparent to, and without departing from the spirit or scope of the invention is the premise of the generic principles defined herein may be applied to other embodiments. 因此,本发明不希望局限于本文所示的实施例,而是被给予符合本文所揭示的原理和新颖特征的最广范畴。 Accordingly, the present invention is not intended limited to the embodiments shown herein but is to be in line with the widest scope disclosed herein, the principles and novel features.

Claims (23)

  1. 1.一种选择性地请求定位数据的方法,所述方法包含:在一移动台中,从一组定位信号源中判定复数个可用定位信号源;判定与所述复数个可用定位信号源相关联的当前定位数据是否有效;和选择性地请求与当前定位数据无效的复数个定位信号源相关联的定位数据。 1. A method of selectively requesting location data, the method comprising: in a mobile station, determining a plurality of position location signal sources available from a group of positioning signal sources; determining available position location signal sources associated with the plurality of the current position data is valid; and selectively requesting location data associated with the current location data invalid plurality of positioning signal sources.
  2. 2.根据权利要求1所述的方法,其中判定所述复数个可用定位信号源包含:接收一对应于所述定位信号源组的定位数据的年历;估计所述定位信号源组中的每一个信号源的的一位置;和至少部分地基于一截止高度角判定所述复数个可用定位信号源。 2. The method according to claim 1, wherein said determining a plurality of available position location signal source comprises: receiving the location corresponding to a source groups positioned almanac data; estimating the position location signal sources in each group a position signal source; and at least partially based on a determination of the elevation angle of the plurality of position location signal sources available.
  3. 3.根据权利要求1所述的方法,其中判定所述复数个可用定位信号源包含:部分地基于全球定位系统人造卫星位置数据的一年历估计复数个全球定位系统人造卫星的每一个的一位置;和部分地基于所述复数个全球定位系统人造卫星的每一个的位置和一截止高度角判定复数个可用全球定位系统人造卫星。 3. The method according to claim 1, wherein said determining a plurality of available position location signal source comprising: estimating a position of part of each of the plurality of GPS satellites based on a global positioning system satellite almanac position data ; and in part based on a position and a plurality of elevation angle determined available global positioning system satellites of said plurality of GPS satellites each.
  4. 4.根据权利要求3所述的方法,其中判定所述复数个可用定位信号源进一步包含:估计一预定将来时间所述复数个全球定位系统人造卫星的每一个的一位置;和部分地基于在所述预定将来时间的所述复数个全球定位系统人造卫星的每一个的位置和所述截止高度角判定复数个可用全球定位系统人造卫星。 4. The method according to claim 3, wherein determining the plurality of available position location signal sources further comprises: estimating a future time the predetermined position of each of a plurality of global positioning system satellites; and based in part on the predetermined time of a future position of said plurality of global positioning system satellite and each of said plurality of elevation angles determined using global positioning satellite system.
  5. 5.根据权利要求1所述的方法,其中判定所述复数个可用定位信号源包含:比较复数个全球定位系统卫星的位置与一截止高度角;和判定一卫星位置对应于所述截止高度角的复数个可用全球定位系统卫星。 5. The method according to claim 1, wherein said determining a plurality of available position location signal source comprises: comparing the position of a plurality of GPS satellites with an elevation angle; and determining a position corresponding to the satellite elevation angle the plurality of available global positioning system satellites.
  6. 6.根据权利要求1所述的方法,其中判定与所述复数个定位信号源相关联的定位数据的有效性包含:撷取与一组可用全球定位系统人造卫星的每一个相关联的一星历时间;和至少部分地基于所述星历时间和一预定位置独立时间判定定位数据的有效性。 6. The method according to claim 1, wherein the plurality of determining the validity of positioning data associated with the source of positioning signals comprises: retrieving a set of available GPS satellites in a satellite associated with each of the calendar time; and positioned at least partially determines the validity of the ephemeris data based on a predetermined time and position independent of time.
  7. 7.根据权利要求1所述的方法,其中判定与所述复数个定位信号源相关联的定位数据的有效性包含判定在将来的一预定独立时间全球定位系统人造卫星星历的有效性。 7. The method according to claim 1, wherein the plurality of determining the validity of positioning data associated with the source of positioning signals comprises determining the validity of a predetermined future time independent GPS satellite ephemeris in.
  8. 8.根据权利要求1所述的方法,其中选择性地请求定位数据包含从一定位实体为所述卫星星历数据无效的可用全球定位系统卫星请求卫星星历数据。 8. The method according to claim 1, wherein the location data comprises selectively requesting available from a Global Positioning System satellite positioning entity is the satellite ephemeris data invalid request satellite ephemeris data.
  9. 9.根据权利要求1所述的方法,其中选择性地请求定位数据包含:产生一制造商定特有的定位数据消息;在所述制造商特有的定位数据消息中,标识一对卫星星历的请求;和在所述制造商特有的定位数据消息中,标识请求星历数据的卫星。 Request at the manufacturer-specific targeting data messages, identifies a satellite ephemeris; manufactured generating a data message targeting specific agreed: 9. A method according to claim 1, wherein the location data comprises selectively requesting ; satellites and the manufacturer-specific targeting data messages, requesting ephemeris data identifier.
  10. 10.根据权利要求1所述的方法,其中所述移动台从一无线电话、一存取终端、一计算机和一个人数字助理中选择。 10. The method according to claim 1, wherein the mobile station, an access terminal, a computer and a personal digital assistant is selected from a wireless telephone.
  11. 11.一种由一无线通信系统中的一移动台选择性地请求全球定位系统卫星星历数据的方法,所述方法包含:在所述移动台处判定全球定位系统卫星的位置;部分地基于所述全球定位系统卫星的位置和一截止高度角判定可用全球定位系统卫星;判定所述可用全球定位系统卫星的星历数据是否无效;和从所述无线通信系统中的一定位实体请求对应于所述星历数据经判定无效的所述可用全球定位系统卫星的星历数据。 11. A method of requesting a global positioning system satellite ephemeris data from a wireless communication system in a mobile station for selectively, the method comprising: determining a position of the GPS satellite at the mobile station; based in part on the position of the GPS satellites and determines a elevation angle available GPS satellites; determining whether the available ephemeris data of the GPS satellite is invalid; and a request from the wireless communication system corresponds to a position determination entity the ephemeris data is valid by determining the ephemeris data of GPS satellites are available.
  12. 12.根据权利要求11所述的方法,其中请求星历数据包含:产生一选择性地请求星历数据的定位数据消息;和将所述定位数据消息从所述移动台发射至一与所述定位实体通信的基站。 12. The method according to claim 11, wherein the request for ephemeris data comprising: generating a data message targeting selectively requesting ephemeris data; and the positioning data message transmitted from the mobile station to one of the positioning communication base station entity.
  13. 13.一种提供星历数据的方法,所述方法包含:从一无线通信系统中的一移动台接收一制造商特有的定位数据消息;判定所述制造商特有的定位数据消息是否包含一选择性星历请求消息;删除一组星历数据以产生卫星特有的星历数据;和将所述卫星特有的星历数据发射至所述移动台。 13. A method of providing ephemeris data, the method comprising: receiving a manufacturer-specific message positioning data from a mobile station in a wireless communication system; determining that the manufacturer-specific location data message contains a choice of ephemeris request message; delete a set of satellite ephemeris data to generate specific ephemeris data; and the satellites transmit ephemeris data specific to the mobile station.
  14. 14.根据权利要求13所述的方法,其中删除所述组星历数据包含:比较所述组星历数据与一包括于所述选择性星历请求消息中的人造卫星掩码;和排除对应于在所述选择性星历请求消息中未标识的人造卫星的星历数据。 14. The method according to claim 13, wherein said set of ephemeris data deleting comprises: comparing said set of ephemeris data with a selective ephemeris included in the request message satellites mask; and the corresponding negative ephemeris data to the request message is not identified in the selective satellite ephemeris.
  15. 15.一种处理器可读存储器件,其具有包含于所述处理器可读存储器件上的处理器可读代码,所述处理器可读代码用于编程一个或一个以上处理器以供一无线通信系统中的一移动台执行一选择性地请求全球定位系统卫星星历数据的方法,所述方法包含:在所述移动台处判定全球定位系统卫星的位置;部分地基于全球定位系统卫星的所述位置和一截止高度角判定可用全球定位系统卫星;判定所述可用全球定位系统卫星的星历数据是否无效;和从所述无线通信系统中的一定位实体请求对应于所述星历数据经判定为无效的所述可用全球定位系统卫星的星历数据。 15. A processor readable storage devices having processor-readable included in the processor readable code on a storage device, said processor readable code for programming one or more processors for a a method in a mobile station performing radio communication system selectively requesting a global positioning system satellite ephemeris data, said method comprising: determining a position of the GPS satellite at the mobile station; based in part on global positioning system satellites and a position of the elevation mask determined using global positioning system satellite; determining whether the available ephemeris data of the GPS satellites is invalid; and from said wireless communication system corresponding to a positioning entity requests the ephemeris data determined to be invalid by the ephemeris data using global positioning system satellites.
  16. 16.一种处理器可读存储器件,其具有包含于所述处理器可读存储器件上的处理器可读代码,所述处理器可读代码用于编程一个或一个以上处理器以执行一提供星历数据的方法,所述方法包含:从一无线通信系统中的一移动台接收一制造商特有的定位数据消息;判定所述制造商特有的定位数据消息是否包含一选择性星历请求消息;删除一组星历数据以产生卫星特有的星历数据;和将所述卫星特有的星历数据发射至所述移动台。 16. A processor readable storage devices having processor-readable included in the processor readable code on a storage device, said processor readable code for programming one or more processors to perform a providing ephemeris data, the method comprising: receiving a manufacturer-specific message positioning data from a mobile station in a wireless communication system; determining that the manufacturer-specific location data message contains a request for selective ephemeris message; delete a group of satellite ephemeris data to generate specific ephemeris data; and the satellites transmit ephemeris data specific to the mobile station.
  17. 17.一种经配置以从一无线通信系统中的一定位实体选择性地请求全球定位系统人造卫星星历数据的装置,所述装置包含:一年历,其经配置以存储全球定位系统人造卫星年历数据;一星历模块,其经配置以存储对应于一个或一个以上全球定位系统卫星的星历数据;和一星历更新模块,其与所述年历和所述星历模块通信,所述星历更新模块经配置以:至少部分地基于所述年历数据判定复数个可用全球定位系统卫星;判定对应于所述复数个可用全球定位系统卫星的有效星历数据是否存储于所述星历模块中;且产生一选择性星历请求,其为有效星历数据未存储于所述星历模块中的可用全球定位系统卫星请求星历数据。 17. An apparatus configured to a wireless communication system from a position determination entity in selectively requesting device a Global Positioning System satellite ephemeris data, said apparatus comprising: an almanac, which is configured to store a global positioning system satellite almanac data; ephemeris a module, which is configured to correspond to a store or a more global positioning system satellites ephemeris data; and a module to update ephemeris, almanac and that the communication module and the ephemeris, the ephemeris update module is configured to: at least partially based on the almanac data available for determining a plurality of GPS satellites; determined corresponding to the plurality of available valid ephemeris data of the GPS satellites is stored in the module ephemeris ; and generating a selective and ephemeris request, valid ephemeris data which is not stored in the module can be used in a global positioning system satellite ephemeris request the ephemeris data.
  18. 18.根据权利要求17所述的装置,其进一步包含一收发器,所述收发器经配置以无线地将所述选择性星历请求消息发射至所述定位实体且从所述定位实体接收星历数据。 18. The apparatus according to claim 17, further comprising a transceiver, the transceiver to wirelessly the selective ephemeris request message is configured to transmit the positioning from the positioning entity and receiving entity stars calendar data.
  19. 19.根据权利要求17所述的装置,其进一步包含一与一系统时间同步的时钟,所述星历更新模块部分地基于所述系统时间和一与存储于所述星历模块中的所述星历数据的每一个相关联的星历时间判定有效星历数据。 19. The apparatus according to claim 17, further comprising a clock synchronized with a system time, the ephemeris based in part on the updated system time and stored in a module in the ephemeris ephemeris time associated with each of the determined ephemeris data valid ephemeris data.
  20. 20.根据权利要求17所述的装置,其中所述装置包含一专用集成电路。 20. The apparatus according to claim 17, wherein said means comprises an application specific integrated circuit.
  21. 21.根据权利要求17所述的装置,其中所述装置包含一无线电话。 21. The apparatus according to claim 17, wherein said device comprises a wireless telephone.
  22. 22.一种在一无线通信系统中的定位实体,所述定位实体包含:一年历,其经配置以存储全球定位系统卫星年历数据;一星历模块,其经配置以存储全球定位系统卫星星历数据;和一位置记录更新模块,其与所述年历和所述星历模块通信,且其经配置以:从一移动台接收一选择性星历请求消息;判定请求星历数据的一个或一个以上全球定位系统卫星;且响应所述选择性星历请求消息,将所述一个或一个以上全球定位系统卫星的所述星历数据发射至所述移动台而排除未请求星历数据的至少一个全球定位系统卫星的星历数据。 22. A position determination entity in a wireless communication system, the PDE comprising: an almanac, configured to store a global positioning system satellite almanac data; ephemeris a module configured to store a global satellite positioning system satellites ephemeris data; and a recording location update module, in communication with the almanac and the ephemeris module, and configured to: receive a selective ephemeris request message from a mobile station; determining whether a request for ephemeris data or one or more global positioning system satellites; and in response to the selective ephemeris request message, the one or more of the GPS satellites ephemeris data to the mobile station transmitting ephemeris data to the exclusion of at least unsolicited a ephemeris data GPS satellites.
  23. 23.根据权利要求22所述的定位实体,其中所述位置记录更新模块进一步经配置以在发射所述一个或一个以上全球定位系统卫星的所述星历数据之前删除存储于所述星历模块中的所述星历数据。 23. A position determination entity according to claim 22, wherein said location record update module is further configured to delete the stored ephemeris data prior to transmitting the one or more GPS satellites in the ephemeris module in the ephemeris data.
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