WO2019061206A1 - 一种系统信息变更指示方法及装置 - Google Patents

一种系统信息变更指示方法及装置 Download PDF

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Publication number
WO2019061206A1
WO2019061206A1 PCT/CN2017/104131 CN2017104131W WO2019061206A1 WO 2019061206 A1 WO2019061206 A1 WO 2019061206A1 CN 2017104131 W CN2017104131 W CN 2017104131W WO 2019061206 A1 WO2019061206 A1 WO 2019061206A1
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WO
WIPO (PCT)
Prior art keywords
sib
assistance data
positioning assistance
value tag
changes
Prior art date
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PCT/CN2017/104131
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English (en)
French (fr)
Inventor
李晨琬
蔺波
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2017/104131 priority Critical patent/WO2019061206A1/zh
Priority to CN201780095207.3A priority patent/CN111133790A/zh
Priority to EP17927017.8A priority patent/EP3678409A4/en
Publication of WO2019061206A1 publication Critical patent/WO2019061206A1/zh
Priority to US16/832,369 priority patent/US20200229072A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
    • G01S19/05—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing aiding data
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
    • G01S19/07—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing data for correcting measured positioning data, e.g. DGPS [differential GPS] or ionosphere corrections
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
    • G01S19/08—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing integrity information, e.g. health of satellites or quality of ephemeris data
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205—Details
    • G01S5/0236—Assistance data, e.g. base station almanac
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a system information change indication method and apparatus.
  • RTK Real-time dynamic positioning
  • LTE long term evolution
  • the base station sends a paging message, and the paging message notifies the terminal system that the information changes, and the terminal monitors the new system information in the next modification period.
  • the base station carries a system information value tag in the first system information block (SIB), and if the change tag read by the terminal is different from the previously stored, The system information has changed and needs to be re-read.
  • SIB system information block
  • the notification method of the system information change in the prior art is used to not only waste the processing overhead of the terminal that does not need to be located, but also the efficiency of the positioning terminal to obtain the positioning assistance data is low.
  • the indication that the system information carrying the positioning assistance data is changed is a problem that needs to be solved.
  • the present invention provides a system information change indication method and apparatus, which are used to provide a notification manner for system information carrying positioning assistance data, reduce processing overhead of a terminal that does not need to be located, and improve a location-related system for a terminal that needs to be located. The efficiency of information.
  • a system information change indication method is provided. If the base station determines that the first SIB carrying the positioning assistance data changes, the base station notifies the terminal by using a special change indication, and the terminal may determine, according to the change indication, that the SIB carrying the positioning assistance data changes. For terminals that do not need to be located, there is no need to re-read the first SIB that has changed. For the terminal that needs to be located, after determining that the first SIB changes, the first SIB needs to be read. In this way, by explicitly indicating whether the SIB related to the positioning changes, the overhead of the terminal that does not need to be located can be saved.
  • the base station determines that the first system information block SIB in the system information to be sent changes, and sends a message carrying the change indication to the terminal, where the first SIB carries the positioning assistance data, and the change indication And configured to notify the terminal that the first SIB changes.
  • the second SIB in the system information carries at least one value tag, where the value tag is used to indicate whether the positioning assistance data in the specified m first SIBs changes.
  • the m is a positive integer.
  • m 1
  • the value label one-to-one indicates whether the positioning assistance data in a first SIB changes
  • each value label indicates whether the positioning assistance data in a first SIB changes.
  • the one-to-one value tag indicates whether the positioning assistance data of one type of satellite navigation system has changed, that is, each value tag indicates whether the positioning assistance data of one type of satellite navigation system has changed.
  • the value label one-to-one indicates whether the positioning assistance data under one positioning method changes, that is, each value label indicates whether the positioning assistance data under one positioning method changes.
  • the second SIB needs to be sent before the first SIB, so that the terminal can obtain the indication of the value label in advance, so usually, the second SIB refers to SIB1.
  • the change indication is at least one value label, wherein the one value label is used to represent whether: the positioning assistance data in the specified m first SIBs changes, the m is a positive integer .
  • the specified m common positioning assistance data included in the first SIB; or the positioning assistance related to the satellite navigation system included in the specified m first SIBs data is included in the specified m common positioning assistance data.
  • the at least one value tag includes a first value tag and a second value tag, where the first value tag is used to indicate whether the positioning assistance data in the first type of SIB changes, the first class
  • the positioning assistance data included in the SIB is public positioning assistance data, which is applicable to various types of satellite navigation systems; the second value tag is used to characterize whether the positioning assistance data in the second type of SIB changes, and the second type of SIB includes
  • the positioning assistance data is positioning assistance data related to the satellite navigation system and is applicable to the satellite navigation system of the specified category.
  • the message carrying the change indication includes any one of the following: a paging message, a radio resource control RRC message, a long term evolution location protocol LPP message, and a system message.
  • the second aspect provides a method for changing a system information, where the terminal acquires a change indication carried in a message sent by the base station, and the terminal determines, according to the change indication, the first system information block SIB that carries the positioning assistance data in the system information. A change occurs; if the terminal needs to perform positioning, the first SIB carrying the positioning assistance data in the system information is read. In this way, by explicitly indicating whether the SIB related to the positioning changes, the overhead of the terminal that does not need to be located can be saved.
  • the second SIB specified in the system information carries at least one value tag, and any one of the value tags is used to indicate whether the positioning assistance data in the specified m first SIBs changes.
  • the m is a positive integer; the method further includes: the terminal reading the at least one value tag carried in the second SIB, determining, according to the at least one value tag, that the system information changes The first SIB, and reading the changed first SIB. In this way, the efficiency of acquiring positioning assistance data by the terminal that needs to be located can be improved.
  • the change indication is at least one value label, and any one of the value labels is used to indicate whether the positioning assistance data in the specified m first SIBs changes, and the m is a positive integer. .
  • the positioning assistance data included in the specified m first SIBs is applicable to various types of satellite navigation systems; or the positioning assistance included in the specified m first SIBs The data applies to satellite navigation systems of the specified category.
  • the at least one value tag includes a first value tag and a second value tag; the first value tag is used to indicate whether the positioning assistance data in the first type of SIB changes, the first class The positioning assistance data included in the SIB is applicable to various types of satellite navigation systems; the second value tag is used to characterize whether the positioning assistance data in the second type of SIB changes, and the positioning assistance data included in the second type of SIB is applicable to A satellite navigation system of the specified category.
  • the message carrying the change indication includes any one of the following: a paging message, a radio resource control RRC message, a long term evolution location protocol LPP message, and a system message.
  • a system information change indication device having the first aspect and the first party implemented The function of the base station behavior in any of the possible designs.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a system information change instructing device having a function of realizing terminal behavior in any of the possible aspects of the second aspect and the second aspect described above.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a base station comprising a transceiver and a processor, wherein the processor is configured to invoke a set of programs to perform any of the possible designs as in the first aspect and the first aspect described above Said method.
  • a terminal comprising a transceiver and a processor, wherein the processor is configured to invoke a set of programs to perform any of the possible designs as in the second aspect and the second aspect described above Said method.
  • a communication system comprising the apparatus of the third aspect or the fifth aspect, and the apparatus of the fourth aspect or the sixth aspect.
  • a computer storage medium is provided, stored with a computer program comprising any of the possible implementations of the first aspect, the second aspect, the first aspect, or the second aspect The instructions of the method in the embodiment.
  • an embodiment of the present application provides a computer program product comprising instructions that, when run on a computer, cause the computer to perform the method described in the above aspects.
  • FIG. 1 is a schematic structural diagram of a communication system in an embodiment of the present application.
  • FIG. 2 is a flowchart of a system information change indication method in an embodiment of the present application
  • FIG. 3 is a schematic diagram of system information change indication signaling in an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a system information change indication device according to an embodiment of the present application.
  • FIG. 5 is a second schematic structural diagram of a system information change indication apparatus according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a base station in an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a terminal in an embodiment of the present application.
  • the communication system 100 to which the embodiment of the present application is applied includes a base station 101, a terminal 102, and a server 103.
  • the base station 101 is a device deployed in the radio access network to provide wireless communication functions for the terminal for connecting the terminal 102 and the server 103.
  • Base station 101 can include various forms of macro base stations, micro base stations, relay stations, access points, and the like. It can be applied in systems with different radio access technologies, such as in LTE systems, or in more possible communication systems such as 5th Generation (5G) communication systems.
  • the base station 101 may also be another network device having a base station function, and in particular, may also be a terminal serving as a base station function in D2D communication.
  • the terminal 102 may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem, and various forms of User Equipment (UE), mobile stations ( Mobile Station, MS), etc.
  • the server 103 is configured to acquire positioning assistance data, and send the positioning assistance data to the base station 101, and the base station 101 sends the positioning assistance data to the terminal 102.
  • the terminal 102 corrects its own positioning data according to the received positioning assistance data. To achieve high positioning accuracy.
  • the server 103 may include a location server, an Evolved Serving Mobile Location Center (E-SMLC), a gateway mobile location center (GMLC), and a gateway mobile location center (GMLC). , RTK server, or other type of server.
  • E-SMLC Evolved Serving Mobile Location Center
  • GMLC gateway mobile location center
  • GMLC gateway mobile location center
  • RTK server or other type of server.
  • the system information change indication method provided by the embodiment of the present application can be applied to various communication systems.
  • System information can also be referred to as system messages.
  • This application can be introduced by taking an LTE system as an example.
  • system information is divided into a master information block (MIB) and a system information block (SIB) IB.
  • MIB mainly carries basic information such as system frame number and cell bandwidth. SIBs are classified according to their contents, for example, SIB1, SIB2, SIB3, .... Multiple SIBs with the same scheduling period can be placed in one system information.
  • the base station may carry the positioning assistance data in one or more SIBs for transmission. Since the positioning auxiliary data has many data types and different data types have different transmission rates, the base station may use different SIBs to transmit positioning assistance data.
  • the positioning assistance data may refer to related data of the calibration of the positioning data by the server according to the reference station, and the corrected related data may be referred to as a correction number or a correction number.
  • GNSS global navigation satellite systems
  • GNSS includes different types, such as the US global position system (GPS), Russia's Glonass, Europe's Galileo, China's Beidou satellite navigation system, and related augmentation systems, such as the US wide-area augmentation system ( Wide area augmentation system (WAAS), Europe's European geostationary navigation overlay service (EGNOS), Japan's multi-functional transport satellite augmentation system (MSAS), Japan's quasi-zenith Satellite system (quasi-Zenith satellite system, QZSS).
  • GEOAS Wide area augmentation system
  • GNOS European geostationary navigation overlay service
  • MSAS Japan's multi-functional transport satellite augmentation system
  • QZSS quasi-zenith Satellite system
  • the SIB carrying the positioning assistance data may be classified according to the content and role of the positioning assistance data.
  • some general positioning assistance data applicable to all GNSSs may be carried in a type of SIB
  • some non-universal positioning assistance data may be carried in a type of SIB.
  • Non-universal positioning assistance data means that the positioning assistance data provided according to different types of GNSS is also different.
  • Each class of SIBs contains at least one SIB. Of course, different classifications can be obtained according to different basis.
  • the information such as the time of week (TOW) and the uncertainty of the reference time that may be included in the reference time may include different reference times of the GNSS.
  • the GNSS reference position refers to the reference position information.
  • the GNSS ionospheric model refers to the influence of the influence of the signal after the attenuation of the ionosphere.
  • the RTK common auxiliary data may include information such as antenna descriptors.
  • the first type of SIB that is, the public positioning assistance data is mainly scheduled transmission, and the data is sent together, and the specific content included therein can also distinguish different GNSSs, but only the positioning assistance data of different GNSSs are sent together.
  • the first type of SIB may specifically include reference times of different GNSS, and if the terminal only supports GPS, only the GPS reference time may be used. But from a terminal perspective, this part of the message can be received regardless of which satellite system is supported.
  • the second type of SIB that is, the positioning assistance data related to the GNSS, may be different when the base station schedules transmission, and the terminal may selectively receive the positioning assistance data that supports the GNSS.
  • a specific type can also be understood as a type determined by the two types together.
  • the GNSS-time model that is, the UTC model of a certain GNSS
  • the GNSS-time model may be, for example, a GPS UTC model, a BDS UTC model, or the like.
  • GNSS-related positioning assistance data "GNSS-" is used in Indicates the prefix data type, which means that different GNSS parameters can be distinguished.
  • the specific distinction between GNSS can be achieved through scheduling, such as through SIB1.
  • the UTC model refers to a set of parameters related to UTC for GNSS time.
  • the navigation model includes satellite information and ephemeris information for different GNSS, as well as clock corrections.
  • Real-time integrity refers to the real-time status of the satellite navigation system.
  • the data bits are used to aid in the specific satellite signal during hopping.
  • GNSS-auxiliary information refers to auxiliary information of different GNSS.
  • the differential corrections include correction information for different satellite systems.
  • RTK general assistance data refers to auxiliary data of different GNSS.
  • Such a data location server needs to indicate a certain data type of a specific GNSS when transmitting to the base station.
  • an implementation method is that, in SIB1, an existing scheduling method may be used for scheduling, or GNSS information may be indicated at each scheduling, and optional SBAS information and corresponding SIBs.
  • SBAS belongs to GNSS.
  • GNSS type is SBAS, it can be further divided into WAAS in the US, system for differential corrections and monitoring (SDCM), EGNOS in Europe, MSAS in Japan and India.
  • SDCM system for differential corrections and monitoring
  • GAGAN GPS aided geo augmented navigation
  • SIBs binding different GNSS and/or specific SBAS auxiliary data content.
  • one or a combination of several or several of the data listed in Table 1 may be classified into different SIBs; wherein, if one is classified according to one, one of them is classified as a classification. According to several classifications, at least two of the above lists are selected as the basis for at least two classifications; if classified according to several combinations, at least two kinds of the above data are required as a classification basis for one classification.
  • SIB classification There are many SIB classification methods. You can include different parameters as above, different GNSS, different positioning methods, and so on. And including at least one of the foregoing information in the same SIB, for example, a positioning method under a certain GNSS is broadcasted in a certain SIB.
  • Specific positioning methods may include position difference, pseudorange difference, phase smoothing and other pseudorange difference, carrier phase difference, local differential GPS, wide area differential GPS, virtual reference station (VRS) network RTK, media access Media access control (MAC) network RTK, regional correction parameter method (Flchenkorrekturparameter, FKP) network RTK, network pseudo-phase difference (real time DGPS, RTD) and state space representation (SSR) method
  • the differential global positioning system may also include other methods such as OTDOA.
  • the system information change indication is implemented in the following manner.
  • SIB carrying the positioning assistance data in the embodiment of the present application is referred to as a first SIB.
  • SIB1 For the terminal, the more information that needs to be obtained as soon as possible, the more it is placed in the previous SIB.
  • SIB1 carries scheduling information for other SIBs.
  • SIB similar to SIB1 is referred to as a second SIB.
  • the terminal may notify the terminal by using a special change indication, and the terminal may determine, according to the change indication, that the SIB carrying the positioning assistance data changes, for the terminal that does not need to be located. , there is no need to re-read the first SIB that has changed. For the terminal that needs to be located, after determining that the first SIB changes, the first SIB needs to be read. In this way, by explicitly indicating whether the SIB related to the positioning changes, the overhead of the terminal that does not need to be located can be saved. Further, a value tag may be carried in the second SIB, and the value tag is used to indicate that one or several first SIBs change.
  • the terminal that needs to be located can also clearly determine which one or which first SIBs are changed by using the value label, and only need to read the first SIB that changes or needs to be read, which can be improved.
  • the terminal that needs to locate acquires the efficiency of locating auxiliary data.
  • the terminal needs to obtain an indication of the value label first, so usually, the second SIB refers to SIB1.
  • Step 201 The base station determines that the first SIB in the system information to be sent changes.
  • Step 202 The base station sends a message carrying the change indication to the terminal, and the terminal acquires the change indication carried in the message sent by the base station.
  • the change indication is used to notify the terminal that the first SIB changes.
  • Step 203 The terminal determines, according to the change indication, that the first system information block SIB that carries the positioning assistance data in the system information changes.
  • Step 204 If the terminal needs to perform positioning, read the first SIB that carries the positioning assistance data in the system information.
  • the terminal should receive the updated system message in the next system message time window containing the positioning assistance data after receiving the change indication or receive the updated system message in the next system message change period.
  • the base station may determine that the first SIB changes by using any one of the following manners.
  • the base station receives the auxiliary data sent by the server, it indicates that the data is new data, that is, the auxiliary data has changed. Otherwise, the base station considers that the auxiliary data has not changed.
  • the change in the auxiliary data is also the change of the first SIB.
  • the server when the server sends the data, it indicates whether the data is new data, and the base station can determine whether the auxiliary data changes by the indication of the server.
  • the server does not indicate whether it is new data, and the base station determines whether the auxiliary data has changed after receiving the auxiliary data.
  • the message carrying the change indication sent by the base station to the terminal may be one of the following types of messages: a paging message, a radio resource control (RRC) message, and an LTE-position protocol (LPP).
  • Message system message. If it is an LPP message, the notification is notified by the positioning server to be forwarded by the base station. That is, when the auxiliary data sent by the positioning server to the base station changes, the positioning server sends an indication message to the UE in the connected state, indicating that the system message including the positioning assistance data has changed.
  • the server sends system information carrying the auxiliary data to the base station, and the base station sends a paging message when the first SIB changes, and carries the change indication information in the paging message. And, the base station broadcasts system information carrying the auxiliary data. After receiving the paging message, the terminal determines that the positioning assistance data changes according to the change instruction, and receives data in the next system information transmission interval or receives data in the next change period.
  • the base station adds at least one value tag to the second SIB, and uses the value tag to indicate whether the corresponding first SIB changes.
  • the second SIB is SIB1.
  • the base station may send a message carrying a change indication, such as a paging message, or other dedicated signaling, or may not transmit. If not, the terminal can also know the changed first SIB through the second SIB. If the transmission is performed, the terminal first determines, by using the change indication, that the first SIB changes, and determines which SIB changes according to the value label in the SIB1.
  • the value tag may indicate whether the positioning assistance data in the specified m first SIBs changes, and m is a positive integer.
  • a value tag can indicate whether a first SIB has changed, or whether a group of first SIBs has changed.
  • the positioning assistance data included in the m first SIBs indicated by one value label is applicable to various types of satellite navigation systems, or the positioning assistance data included in the m first SIBs indicated by one value label is applicable to the specified category. Satellite navigation system.
  • a value tag may indicate whether a type of SIB changes. That is, each value tag corresponds to one SIB. If the value of the system message changes, the value is increased by 1. The terminal can compare whether the stored value is the same as the value of the value tag in the system message. If not, the system message is obtained.
  • the base station adds two value labels in SIB1, which are indicated by the first value label and the second value label.
  • the first value label is used to indicate whether the positioning assistance data in the first type of SIB changes, and the positioning auxiliary number included in the first type of SIB It is applicable to UEs supporting various types of satellite navigation systems;
  • the second value tag is used to characterize whether the positioning assistance data in the second type of SIB changes, and the positioning assistance data contained in the second type of SIB is related to the satellite navigation system.
  • the classification of the SIB carrying the positioning assistance data may be other methods.
  • the total value regardless of the classification method, may be used to indicate whether a type of SIB changes.
  • a value tag can indicate whether two or more types of SIBs have changed.
  • the division of the category the base station and the terminal agree in advance, such as the default configuration or when instructed by scheduling.
  • Value tags can also be used to indicate changes to system messages that contain different positioning methods.
  • Each of the specific positioning methods may use a value tag.
  • the terminal may only receive the system message supporting the positioning method.
  • the system messages where the specific positioning methods are located may be configured by default or configured based on scheduling information. For example, in the second SIB, there is a value tag corresponding to the SIB containing the SSR data, and another value tag corresponding to the SIB containing the OTODA, when the value tag corresponding to the OTDOA SIB changes, only the OTDOA method is used. The terminal only re-reads the corresponding system message. Of course, in the same SIB, data that distinguishes different positioning methods can be read. If each method has a value tag corresponding thereto, it can be judged whether or not the change is made, and the system message is received.
  • each GNSS type uses a value tag to indicate that when the terminal changes through the value tag and finds that the system information of the GNSS type supported by the terminal changes, the corresponding system information can be received. It is also possible to set an identifier for each satellite identity, as well as a value tag. When the terminal determines that a satellite system message changes, or does not have the data before, it receives the message.
  • All the change indications in the embodiment of the present application may also be used to indicate changes in the positioning assistance data of different positioning methods, such as at least one field in the paging message indicating that the auxiliary data related to the positioning method is included. If there is a field indicating whether the OTDOA data has changed.
  • the specific OTDOA includes the terminal-assisted OTDOA and the terminal-based OTDOA.
  • an indication information may be used, or may be separately indicated. The same is true for the value label method.
  • All the indication information in this case can also be used to indicate the change of the system message.
  • the terminal when determining that the first SIB changes according to the change indication sent by the base station, the terminal further compares the value tag carried in the second SIB with the value tag saved by itself, and if not, determines the value tag indication.
  • the first SIB changes, and when the positioning needs to be performed, the first SIB that changes is read.
  • the value of the above value tag is composed of a set of integers consisting of at least 1 bit. For example, if it consists of 1 bit, the value range is (0-1), and the system message changes from 0 to 1 each time. 1 becomes 0, and if it consists of 2 bits, the value range is (0-3).
  • the value tag in the SIB1 may or may not change, and no limitation is imposed herein. If there are additional value tags corresponding to different system messages including positioning, the corresponding system message may be received according to the system message corresponding to the value tag indicating the change.
  • the existing value tag in the SIB1 may include a change in scheduling information of the system message with the positioning assistance data.
  • the value tag is different from the existing value tag used to indicate the change of the positioning system message.
  • the change indication sent by the base station may be the value tag described above.
  • Value tag The indication manner is the same as the indication manner when the value label is carried in the SIB1.
  • the indication manner of carrying the value label in the SIB1 may be all cited.
  • the change indication is sent in the paging message, it means that the base station carries at least one value tag in the paging message to indicate the first SIB that changes specifically.
  • the terminal does not need to read the second SIB.
  • the terminal receives the paging message, according to the paging message, it can quickly determine which one or which first SIBs need to be read.
  • the base station carries the first type value tag and the second type value tag in the paging message, and after receiving the paging message, the terminal compares the first type value tag and the second type value tag with the stored ones, If the first type of value label is changed, the second type of value label does not change, the terminal only reads the first type of SIB indicated by the first type of value label, and does not need to read the second type of SIB indicated by the second type of value label. .
  • the base station may also carry the change indication through dedicated signaling or carry a value tag.
  • the above change indication information does not use the indication information. There is no need to change the indication for system messages that contain such faster-changing ancillary data.
  • the terminal needs to locate the information, it can choose to always receive the system message containing the content until the location information is calculated.
  • system information change indication device 400 for performing the method shown in FIG. include:
  • the processing unit 401 is configured to determine that the first system information block SIB is changed in the system information to be sent, where the first SIB carries the positioning assistance data;
  • the sending unit 402 is configured to send a message carrying the change indication to the terminal, where the change indication is used to notify the terminal that the first SIB changes.
  • system information change indication device 500 for performing the method shown in FIG. include:
  • the receiving unit 501 is configured to acquire a change indication carried in the message sent by the base station;
  • the processing unit 502 is configured to determine, according to the change indication, that the first system information block SIB that carries the positioning assistance data in the system information changes;
  • the processing unit 502 is further configured to: if the positioning needs to be performed, read the first SIB that carries the positioning assistance data in the system information.
  • the second SIB specified in the system information carries at least one value label, where any one of the value labels is used to indicate whether the positioning assistance data in the specified m first SIBs changes, where m is Positive integer
  • the processing unit 502 is further configured to: read the at least one value tag carried in the second SIB, determine a first SIB that changes in the system information according to the at least one value tag, and read the changed first SIB.
  • the embodiment of the present application further provides a base station 600, which can be used to perform the method shown in FIG.
  • the base station 600 includes a transceiver 601, a processor 602, and a memory 603.
  • the processor 602 is configured to execute a set of codes that, when executed, cause the processor 602 to perform the method illustrated in FIG.
  • Base station 600 can also include a memory 603 for storing code executed by processor 602.
  • the processor 602 can be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP.
  • CPU central processing unit
  • NP network processor
  • Processor 602 can also further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.
  • the memory 603 may include a volatile memory such as a random-access memory (RAM); the memory 603 may also include a non-volatile memory such as a flash memory (flash) Memory), hard disk drive (HDD) or solid-state drive (SSD); the memory 603 may also include a combination of the above types of memories.
  • RAM random-access memory
  • non-volatile memory such as a flash memory (flash) Memory), hard disk drive (HDD) or solid-state drive (SSD)
  • the memory 603 may also include a combination of the above types of memories.
  • the embodiment of the present application further provides a terminal 700, which can be used to execute the method shown in FIG.
  • the terminal 700 includes a transceiver 701, a processor 702, and a memory 703.
  • the processor 702 is configured to execute a set of codes. When the code is executed, the execution causes the processor 702 to perform the method shown in FIG. Terminal 700 can also include a memory 703 for storing code executed by processor 702.
  • the processor 702 can be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP.
  • CPU central processing unit
  • NP network processor
  • Processor 702 can also further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.
  • the memory 703 may include a volatile memory such as a random-access memory (RAM); the memory 703 may also include a non-volatile memory such as a flash memory (flash) Memory), hard disk drive (HDD) or solid state drive (SSD); the memory 703 may also include a combination of the above types of memories.
  • RAM random-access memory
  • non-volatile memory such as a flash memory (flash) Memory), hard disk drive (HDD) or solid state drive (SSD); the memory 703 may also include a combination of the above types of memories.
  • the embodiment of the present application provides a computer storage medium storing a computer program, the computer program including the method shown in FIG.
  • An embodiment of the present application provides a computer program product comprising instructions that, when run on a computer, cause the computer to perform the method illustrated in FIG.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本申请公开了一种系统信息变更指示方法及装置，用以提高需要定位的终端获取定位相关系统信息的效率。该方法为：基站确定待发送的系统信息中第一系统信息块SIB发生变化，向终端发送携带变更指示的消息，其中，所述第一SIB中携带定位辅助数据，所述变更指示用于通知所述终端所述第一SIB发生变化。

Description

一种系统信息变更指示方法及装置 技术领域
本申请涉及通信技术领域，特别涉及一种系统信息变更指示方法及装置。
背景技术
目前，无人机、智能驾驶、垂直市场等应用场景对定位精度的要求是比较高的，采用实时动态定位(real time kinematic，RTK)技术可以有效的提高定位精度，RTK的定位精度可以达到厘米级。在长期演进(long term evolution，LTE)R15中，基站接收定位服务器发送的定位辅助数据，将该定位辅助数据携带在系统信息中以广播的方式发送给终端，终端根据接收到的定位辅助数据对自身的定位数据进行修正，以实现高定位精度。
现有技术中，若系统信息发生改变，基站会发送寻呼消息，通过寻呼消息通知终端系统信息发生改变，终端会在下一个修改周期监听新的系统信息。或者，若系统消息发生改变，基站在首个系统信息块(system information block，SIB)中携带系统信息变更标签(system Info value tag)，如果终端读取的变更标签和之前存储的不同，则表示系统信息发生变更，需要重新读取。
然而，若在系统信息中携带定位辅助数据，采用现有技术中系统信息变更的通知方式，不仅浪费不需要定位的终端的处理开销，而且需要定位的终端获取定位辅助数据的效率低下，如何合理的指示携带定位辅助数据的系统信息发生变更，是需要解决的问题。
发明内容
本申请提供一种系统信息变更指示方法及装置，用以提供一种对携带定位辅助数据的系统信息的通知方式，降低不需要定位的终端的处理开销，并提高需要定位的终端获取定位相关系统信息的效率。
一方面，提供一种系统信息变更指示方法，基站若确定携带定位辅助数据的第一SIB发生变化，则通过专门的变更指示通知终端，终端可根据变更指示确定携带定位辅助数据的SIB发生变化，对于不需要定位的终端来说，则不需要重新读取发生变更的第一SIB。对于需要定位的终端来说，在确定第一SIB发生变化后，则需要读取第一SIB。这样，通过明确指示与定位相关的SIB是否发生变化，能够节省不需要定位的终端的开销。
一种可能的设计中，基站确定待发送的系统信息中第一系统信息块SIB发生变化，向终端发送携带变更指示的消息，其中，所述第一SIB中携带定位辅助数据，所述变更指示用于通知所述终端所述第一SIB发生变化。
一种可能的设计中，所述系统信息中的第二SIB中携带至少一个值标签，其中一个所述值标签用于表征：指定的m个所述第一SIB中定位辅助数据是否发生变化，所述m为正整数。这样，需要定位的终端还可以通过值标签，明确的确定发生变化的是哪一个或者哪几个第一SIB，只需要读取发生变化的或者自身需要读取的第一SIB即可，可以提高需要定位的终端获取定位辅助数据的效率。
一种可能的设计中，m＝1，值标签一对一指示一个第一SIB中定位辅助数据是否发生变化，每一个值标签均指示一个第一SIB中定位辅助数据是否发生变化。
一种可能的设计中，值标签一对一指示一种类型的卫星导航系统的定位辅助数据是否发生变化，即每一个值标签均指示一种类型的卫星导航系统的定位辅助数据是否发生变化。
一种可能的设计中，值标签一对一指示一种定位方法下的定位辅助数据是否发生变化，即每一个值标签均指示一种定位方法下的定位辅助数据是否发生变化。
一种可能的设计中，第二SIB需要在第一SIB之前发送，这样终端才能提前获取值标签的指示，所以通常，第二SIB是指SIB1。
一种可能的设计中，所述变更指示为至少一个值标签，其中一个所述值标签用于表征：指定的m个所述第一SIB中定位辅助数据是否发生变化，所述m为正整数。
一种可能的设计中，所述指定的m个所述第一SIB中包含的公共定位辅助数据；或者，所述指定的m个所述第一SIB中包含的与卫星导航系统相关的定位辅助数据。
一种可能的设计中，所述至少一个值标签包括第一值标签和第二值标签，所述第一值标签用于表征第一类SIB中定位辅助数据是否发生变化，所述第一类SIB中包含的定位辅助数据为公共定位辅助数据，适用于各类卫星导航系统；所述第二值标签用于表征第二类SIB中定位辅助数据是否发生变化，所述第二类SIB中包含的定位辅助数据为与卫星导航系统相关的定位辅助数据，适用于指定类别的卫星导航系统。
一种可能的设计中，所述携带变更指示的消息包括以下任意一种：寻呼消息、无线资源控制RRC消息、长期演进定位协议LPP消息，系统消息。
第二方面，提供一种系统信息变更指示的方法，终端获取基站发送的消息中携带的变更指示；所述终端根据所述变更指示，确定系统信息中携带定位辅助数据的第一系统信息块SIB发生变化；所述终端若需要进行定位，则读取所述系统信息中携带定位辅助数据的所述第一SIB。这样，通过明确指示与定位相关的SIB是否发生变化，能够节省不需要定位的终端的开销。
一种可能的设计中，所述系统信息中指定的第二SIB中携带至少一个值标签，任意一个所述值标签用于表征：指定的m个所述第一SIB中定位辅助数据是否发生变化，所述m为正整数；所述方法还包括：所述终端读取所述第二SIB中携带的所述至少一个值标签，根据所述至少一个值标签确定所述系统信息中发生变化的第一SIB，并读取所述发生变化的第一SIB。这样，能够提高需要定位的终端获取定位辅助数据的效率。
一种可能的设计中，所述变更指示为至少一个值标签，任意一个所述值标签用于表征：指定的m个所述第一SIB中定位辅助数据是否发生变化，所述m为正整数。
一种可能的设计中，所述指定的m个所述第一SIB中包含的定位辅助数据适用于各类卫星导航系统；或者，所述指定的m个所述第一SIB中包含的定位辅助数据适用于指定类别的卫星导航系统。
一种可能的设计中，所述至少一个值标签包括第一值标签和第二值标签；所述第一值标签用于表征第一类SIB中定位辅助数据是否发生变化，所述第一类SIB中包含的定位辅助数据适用于各类卫星导航系统；所述第二值标签用于表征第二类SIB中定位辅助数据是否发生变化，所述第二类SIB中包含的定位辅助数据适用于指定类别的卫星导航系统。
一种可能的设计中，所述携带变更指示的消息包括以下任意一种：寻呼消息、无线资源控制RRC消息、长期演进定位协议LPP消息，系统消息。
第三方面，提供一种系统信息变更指示装置，该装置具有实现上述第一方面和第一方 面的任一种可能的设计中基站行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
第四方面，提供一种系统信息变更指示装置，该装置具有实现上述第二方面和第二方面的任一种可能的设计中终端行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
第五方面，提供一种基站，该基站的结构包括收发器和处理器，其中，所述处理器用于调用一组程序以执行如上述第一方面和第一方面的任一种可能的设计中所述的方法。
第六方面，提供一种终端，该终端的结构包括收发器和处理器，其中，所述处理器用于调用一组程序以执行如上述第二方面和第二方面的任一种可能的设计中所述的方法。
第七方面，提供了一种通信系统，该系统包括第三方面或第五方面所述的装置，和第四方面或第六方面所述的装置。
第八方面，提供了一种计算机存储介质，存储有计算机程序，该计算机程序包括用于执行第一方面、第二方面、第一方面的任一可能的实施方式或第二方面的任一可能的实施方式中的方法的指令。
第九方面，本申请实施例提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。
附图说明
图1为本申请实施例中通信系统结构示意图；
图2为本申请实施例中系统信息变更指示方法流程图；
图3为本申请实施例中系统信息变更指示信令示意图；
图4为本申请实施例中系统信息变更指示装置结构示意图之一；
图5为本申请实施例中系统信息变更指示装置结构示意图之二；
图6为本申请实施例中基站结构示意图；
图7为本申请实施例中终端结构示意图。
具体实施方式
下面将结合附图，对本申请实施例进行详细描述。
如图1所示，本申请实施例应用的通信系统100中包括基站101、终端102和服务器103。基站101是一种部署在无线接入网中用以为终端提供无线通信功能的装置，用于连接终端102和服务器103。基站101可以包括各种形式的宏基站，微基站，中继站，接入点等等。可以应用在不同的无线接入技术的系统中，例如LTE系统中，或者，第五代(5th Generation，5G)通信系统等更多可能的通信系统中。基站101还可以是其他具有基站功能的网络设备，特别地，还可以是D2D通信中担任基站功能的终端。终端102可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其他处理设备，以及各种形式的用户设备(User Equipment，UE)，移动台(Mobile Station，MS)等。服务器103用于获取定位辅助数据，将定位辅助数据发送给基站101，基站101再将定位辅助数据发送给终端102。终端102根据接收到的定位辅助数据对自身的定位数据进行修正， 以实现高定位精度。服务器103可以包括定位服务器，增强的服务移动定位中心(Evolved Serving Mobile Location Center，E-SMLC)，网关移动定位中心(gateway mobile location center，GMLC)，网关移动定位中心(gateway mobile location center，GMLC)，RTK服务器，或者其他类型的服务器。
本申请实施例提供的系统信息变更指示方法可以应用在各种通信系统中。系统信息也可以称为系统消息。本申请可以以LTE系统为例进行介绍。
在LTE系统中，系统信息分为主信息块(master information block，MIB)以及系统信息块(system information block，SIB)IB。MIB主要携带系统帧号、小区带宽等小区基本信息。SIB根据其内容的不同进行了分类，例如，分为SIB1、SIB2、SIB3、……。多个调度周期相同的SIB可以放到一条系统信息中。基站可以将定位辅助数据承载在一个或多个SIB中进行发送。由于定位辅助数据的数据类型较多，不同数据类型的传输速率也不同，因此，基站可能会采用不同的SIB来传输定位辅助数据。
本申请实施例中，定位辅助数据可以指服务器根据参考站对定位数据的校正的相关数据，校正的相关数据可以称为更正数或改正数。对于不同的全球导航卫星系统(global navigation satellite system，GNSS)来说，可能每次监测获得的更正数不同。GNSS包括不同的种类，例如，美国的全球定位系统(global position system，GPS)、俄罗斯的Glonass、欧洲的Galileo、中国的北斗卫星导航系统，以及相关的增强系统，如美国的广域增强系统(wide area augmentation system，WAAS)、欧洲的欧洲静地导航重叠系统(European geostationary navigation overlay service，EGNOS)、日本的多功能运输卫星增强系统(multi functional transport satellite augmentation system，MSAS)，日本的准天顶卫星系统(quasi-Zenith satellite system，QZSS)等。
本申请实施例中，可以根据定位辅助数据的内容和作用，对携带定位辅助数据的SIB进行分类。例如，一种可能的实现方式中，根据GNSS的种类不同，可以将一些适用于所有GNSS的通用定位辅助数据携带在一类SIB中，将一些非通用的定位辅助数据携带在一类SIB中，非通用的定位辅助数据是指根据不同类型的GNSS提供的定位辅助数据也不同。各个类的SIB中均包含至少一个SIB。当然，还可以根据不同的依据得到不同的分类。
根据上述举例，下面给出一种SIB携带定位辅助数据和SIB具体分类的描述。具体如表1所示。
表1
Figure PCTCN2017104131-appb-000001
在表1中，具体的上述数据类型分类里，参考时间具体可以包括的周时间(time of week，TOW)、参考时间的不确定等信息，可以包括不同的GNSS的参考时间。GNSS参考位置指参考位置信息。GNSS电离层模型指的是信号经过电离层衰弱后的影响模拟影响，RTK公共辅助数据可以包括天线描述符等信息。
需要说明的是，第一类SIB即公共的定位辅助数据主要是调度传输，将数据一起发送，其中包含的具体内容也可以区分不同的GNSS，只是将不同GNSS的定位辅助数据放在一起发送。终端接收时进行区分利用。如GNSS时间，第一类SIB中具体可以包括不同GNSS的参考时间，如果终端只支持GPS，则可以仅使用GPS参考时间。但是从终端角度，不论支持何种卫星系统都可以接收这部分消息。而第二类SIB即与GNSS相关的定位辅助数据，可以是在基站调度传输时将不同的GNSS区分发送，终端可以选择性接收自己支持GNSS的定位辅助数据。
对于第二类SIB即与GNSS相关的定位辅助数据，具体的某一种类型也可以理解为两种类型共同确定的类型。如GNSS-时间模型，即某一GNSS的UTC模型，例如可以是GPS UTC模型，BDS UTC模型等。在第二类SIB即与GNSS相关的定位辅助数据中，“GNSS-”用于 表示前缀数据类型，表示可以区分不同的GNSS的参数，具体的区分GNSS可以通过调度时实现，如通过SIB1。具体的，UTC模型指的是GNSS时间与UTC相关的一组参数。导航模型包括的不同GNSS的卫星信息和星历信息，以及时钟改正数等。实时完整性指的是卫星导航系统的实时状态。数据比特辅助用于跳变时具体的卫星信号。GNSS-辅助信息指的是不同GNSS的辅助信息。差分改正数包括的是不同卫星系统的改正数信息。RTK一般辅助数据指的是不同GNSS的辅助数据。此类数据定位服务器在发送给基站时需要指示出具体的某个GNSS的某一种数据类型。在调度此类信息时，一种实现的方法是，在SIB1中，可以使用现有的调度方法进行调度，也可以在每次调度时指示GNSS信息，以及可选的SBAS信息和相应的SIB。其中SBAS属于GNSS的一种，当GNSS类型为SBAS时，进一步可以区分为美国的WAAS、俄罗斯的差分改正和监测系统(system for differential corrections and monitoring，SDCM)、欧洲的EGNOS、日本的MSAS以及印度的GPS辅助导航(GPS aided geo augmented navigation，GAGAN。或者不同的SIB绑定不同的GNSS和/或具体的SBAS辅助数据内容。
此外，具体也可以按照表1中所列的数据中的一种或者几种或者几种的组合进行分类放在不同的SIB；其中，若按照一种进行分类，即取其中的一种作为分类依据；若按照几种进行分类，即从上述列表中选取至少两种作为至少两种分类的依据；若按照几种的组合进行分类，即对于一个分类需要至少两种上述数据作为分类依据。
本文只给了一个SIB的分类具体的SIB分类方式有很多种，可以如上面包括不同的参数，也可以区分不同的GNSS，还可以区分不同的定位方法等等。以及在同一SIB中包含上述信息的至少一种，如某一GNSS下的某一定位方法在某一个SIB中进行广播。具体的定位方法可以有包括位置差分，伪距差分，相位平滑等伪距差分，载波相位差分，局域差分GPS，广域差分GPS，虚拟参考站(Virtual Reference Station，VRS)网络RTK，介质访问控制(media access control，MAC)网络RTK，区域改正参数法(Flchenkorrekturparameter，FKP)网络RTK，网络伪距相位差分(real time DGPS,RTD)以及状态空间表示(state space representation，SSR)方法等定位方法；其中，差分全球定位系统(differential global positioning system，DGPS)，还可以包括OTDOA等其他方法。
下面具体描述一下携带定位辅助数据的系统信息变更的指示方法。如图2所示，本申请实施例中，通过以下方式实现系统信息变更指示。
为方便叙述，本申请实施例中将携带定位辅助数据的SIB称为第一SIB。对于终端来说，越需要尽早获得的信息越放到前面的SIB中。例如，SIB1中会携带对其它SIB的调度信息。本申请实施例中，为作区分，将类似于SIB1的这类SIB称为第二SIB。
本申请实施例中，基站若确定携带定位辅助数据的SIB发生变化，则通过专门的变更指示通知终端，终端可根据变更指示确定携带定位辅助数据的SIB发生变化，对于不需要定位的终端来说，则不需要重新读取发生变更的第一SIB。对于需要定位的终端来说，在确定第一SIB发生变化后，则需要读取第一SIB。这样，通过明确指示与定位相关的SIB是否发生变化，能够节省不需要定位的终端的开销。进一步的，还可以在第二SIB中携带值标签(value tag)，通过值标签来指示一个或者几个第一SIB发生变化。这样，需要定位的终端还可以通过值标签，明确的确定发生变化的是哪一个或者哪几个第一SIB，只需要读取发生变化的或者自身需要读取的第一SIB即可，可以提高需要定位的终端获取定位辅助数据的效率。一般情况下，终端需要先获取值标签的指示，所以通常，第二SIB是指SIB1。
下面通过具体步骤来详细说明一下系统信息变更指示的流程。
步骤201、基站确定待发送的系统信息中第一SIB发生变化。
步骤202、基站向终端发送携带变更指示的消息，终端获取基站发送的消息中携带的变更指示。其中，变更指示用于通知终端第一SIB发生变化。
步骤203、终端根据所述变更指示，确定系统信息中携带定位辅助数据的第一系统信息块SIB发生变化。
步骤204、终端若需要进行定位，则读取系统信息中携带定位辅助数据的第一SIB。
具体的，终端应在接收到变更指示下一个包含定位辅助数据的下一系统消息时间窗接收更新的系统消息或者在下一个系统消息变更周期内接收更新的系统消息。
具体的，在步骤201中，基站可能通过以下几种方式的任一种来确定第一SIB发生变化。
例如，基站接收服务器发送的辅助数据，，则说明该数据为新的数据，也就是辅助数据发生了变化。否则，基站认为辅助数据没有发生变化。辅助数据发生变化也就是第一SIB发生变化。
或者，服务器发送数据时指示该数据是否是新的数据，基站通过服务器的指示可以判断辅助数据是否发生变化。
或者，服务器不指示是否是新的数据，基站收到辅助数据后自己去判断该辅助数据是否发生变化。
基站向终端发送的携带变更指示的消息，可以是以下类型的消息中的一种：寻呼消息、无线资源控制(radio resource control，RRC)消息、长期演进定位协议(LTE-position protocol，LPP)消息，系统消息。如果是LPP消息，则该通知由定位服务器通知通过基站转发。即当定位服务器向基站发送的辅助数据变化了，定位服务器在连接态向UE发送一条指示信息，用于指示包含定位辅助数据的系统消息变化了。
较普遍的，如图3所示，服务器发送携带辅助数据的系统信息给基站，基站会在确定第一SIB发生变化时，发送寻呼消息，在寻呼消息中携带变更指示信息。以及，基站广播携带辅助数据的系统信息。终端在接收到寻呼消息后，根据变更指示确定定位辅助数据发生变化，则在下一个系统信息传输间隔接收数据或者在下一个变更周期接收数据。
进一步的，基站会在第二SIB中增加至少一个值标签(value tag)，用值标签来指示对应的第一SIB是否发生变化。例如第二SIB为SIB1。这种情况下，基站可以在发送携带变更指示的消息，如寻呼消息，或者其他专用信令等，也可以不发送。若不发送，则终端通过第二SIB也可以知道发生变化的第一SIB。若发送，则终端先通过变更指示确定第一SIB发生变化，在根据SIB1中的值标签确定具体是哪个SIB发生变化。其中，一个值标签可以指示指定的m个第一SIB中定位辅助数据是否发生变化，m为正整数。也就是，一个值标签可以指示一个第一SIB是否发生变化，或者指示一组第一SIB是否发生变化。具体地，一个值标签指示的m个第一SIB中包含的定位辅助数据适用于各类卫星导航系统，或者，一个值标签指示的m个第一SIB中包含的定位辅助数据适用于指定类别的卫星导航系统。
可选的，根据上述对携带定位辅助数据的SIB的分类的描述，一个值标签可以指示一类SIB是否发生变化。即每个值标签对应一个SIB，若系统消息变化则值加1，终端可以对比存储的值和系统消息中的值标签的值是否一样，如果不一样，则获取该系统消息。
例如，基站在SIB1中增加两个值标签，用第一值标签和第二值标签标示。其中，第一值标签用于表征第一类SIB中定位辅助数据是否发生变化，第一类SIB中包含的定位辅助数 据适用于支持各类卫星导航系统的UE；第二值标签用于表征第二类SIB中定位辅助数据是否发生变化，第二类SIB中包含的定位辅助数据与卫星导航系统相关。
当然，携带定位辅助数据的SIB的分类方式还可能是其它方式，总值，无论分类方式如何，可以采用一个值标签可以指示一类SIB是否发生变化。或者，一个值标签可以指示两类或以上的SIB是否发生变化。关于类别的划分，基站与终端之间事先约定好的，如默认的配置或者通过调度时进行指示的。
值标签也可以用于指示包含不同的定位方法的系统消息的变化。具体的每个或者几个定位方法可以使用一个value tag,当相应的系统消息发送变化时则终端可以仅接收支持定位方法的系统消息。具体的不同定位方法所在的系统消息，可以是默认配置的，也可以是基于调度信息配置的。举个例子，如在第二SIB中，有个值标签对应包含SSR数据的SIB，有另一个值标签对应包含OTODA的SIB，则当对应OTDOA SIB的值标签发生变化时，只有使用OTDOA方法的终端才进行重新读取相应系统消息。当然在同一SIB中可以通过调读区分不同的定位方法的数据，如果每个方法都有与之对应的值标签，则可以相应的判断是否变化，并接收该系统消息。
在一种可能的实现方式中，还可以将每一个SIB类型的不同内容进行指示是否发生变化均通过采用值标签的方式来指示。具体的，若在调度中需要指示GNSS时，也可以增加一个值标签。即每一个GNSS类型均采用一个值标签来指示，当终端通过值标签变化，发现自己支持的GNSS类型的系统信息发生变化时，相应的接收系统信息即可。此外也可以针对每个卫星标识设置一个标识，以及一个值标签。当终端判断出某个卫星系统消息变化，或者之前没有该数据时，则接收该消息。
本申请实施例中所有的变更指示也可以用于指示不同定位方法的定位辅助数据的变化，如寻呼消息中有至少一个字段指示包含与定位方法相关的辅助数据。如有个字段指示OTDOA数据是否发生变化。具体的OTDOA又包括终端辅助的OTDOA和基于终端的OTDOA，则在指示变化时，可以用一个指示信息，也可以分别指示。对于值标签方法也是一样。
当然，更可能的方式是不同的系统消息放置不同传输周期的定位辅助数据，因此，可以通过设置不同的值标签来进行区分指示。
本案中所有的指示信息，也可以用于指示系统消息的有无变化。
综上所述，终端在根据基站发送的变更指示确定第一SIB发生变化时，会进一步根据第二SIB中携带的值标签与自身保存的值标签进行比较，若不一致，则确定值标签指示的第一SIB发生变化，在需要进行定位时，读取发生变化的第一SIB即可。
上述一个值标签的取值由至少1比特所组成的整数集合构成，例如，由1比特组成，则取值范围为(0-1)，每次系统消息发生变化则由0变为1，由1变为0，若由2比特组成，则取值范围为(0-3)。
具体的，当终端收到寻呼消息携带与定位相关系统消息变更指示后，SIB1中的value tag可以变化，也可以不变化，在此不做限制。如果有额外的值标签对应与不同的包含定位的系统消息，则可以根据值标签对应指示变化的系统消息去接收相应的系统消息。
进一步的，SIB1中现有的value tag可以包含有定位辅助数据的系统消息的调度信息的变化。该value tag与现有的用于指示定位系统消息变化的value tag是不同的value tag.
在另一种可能的实现方式中，基站发送的变更指示可以为上述的值标签。值标签的指 示方式与上述在SIB1中携带值标签时的指示方式相同，当寻呼消息中携带值标签时，上述在SIB1中携带值标签的指示方式可全部引用。例如，若变更指示在寻呼消息中发送，意味着，基站在寻呼消息中携带至少一个值标签，来指示具体发生变化的第一SIB。当其他SIB没有变化时，终端不用读取第二SIB，当终端接收到寻呼消息后，根据寻呼消息，能够快速确定需要读取哪一个或者哪几个第一SIB。例如，基站在寻呼消息中携带第一类值标签和第二类值标签，终端在接收到寻呼消息后，将第一类值标签和第二类值标签分别与自身存储的进行比较，若发现第一类值标签发生变化，第二类值标签未发生变化，则终端仅读取第一类值标签指示的第一类SIB，不用读取第二类值标签指示的第二类SIB。
若终端在连接态，基站还可以通过专用信令来携带变更指示，或者携带值标签。
此外，如果有些变化速率较快的定位辅助数据，则上述变更指示信息并不用与该指示信息。对于包含这种变化较快的辅助数据的系统消息，无需变更指示。当终端需要该信息定位时，则可以选择一直接收包含该内容的系统消息，直至计算出位置信息。
对于不同类型的数据或者数据类型(如GNSS，定位方法，数据参数等)组合可能会在不同的SIB，均可以使用值标签方式通知系统消息变化。
基于与上述系统信息变更指示方法同一发明构思，如图4所示，本申请实施例还提供一种系统信息变更指示装置400，该系统信息变更指示装置400用于执行图2所示的方法，包括：
处理单元401，用于确定待发送的系统信息中第一系统信息块SIB发生变化，其中，第一SIB中携带定位辅助数据；
发送单元402，用于向终端发送携带变更指示的消息，其中，变更指示用于通知终端第一SIB发生变化。
基于与上述系统信息变更指示方法同一发明构思，如图5所示，本申请实施例还提供一种系统信息变更指示装置500，该系统信息变更指示装置500用于执行图2所示的方法，包括：
接收单元501，用于获取基站发送的消息中携带的变更指示；
处理单元502，用于根据变更指示，确定系统信息中携带定位辅助数据的第一系统信息块SIB发生变化；
处理单元502，还用于若需要进行定位，则读取系统信息中携带定位辅助数据的第一SIB。
可选的，所述系统信息中指定的第二SIB中携带至少一个值标签，任意一个所述值标签用于表征：指定的m个第一SIB中定位辅助数据是否发生变化，所述m为正整数；
处理单元502还用于：读取第二SIB中携带的所述至少一个值标签，根据所述至少一个值标签确定系统信息中发生变化的第一SIB，并读取发生变化的第一SIB。
基于与上述系统信息变更指示方法同一发明构思，如图6所示，本申请实施例还提供一种基站600，该基站600可用于执行图2所示的方法。其中，基站600包括收发器601、处理器602，存储器603，处理器602用于执行一组代码，当代码被执行时，该执行使得处理器602执行图2所示的方法。基站600还可以包括存储器603，用于存储处理器602所执行的代码。
处理器602可以是中央处理器(central processing unit，CPU)，网络处理器(network processor，NP)或者CPU和NP的组合。
处理器602还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，ASIC)，可编程逻辑器件(programmable logic device，PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)，现场可编程逻辑门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic,GAL)或其任意组合。
存储器603可以包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；存储器603也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)，硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；存储器603还可以包括上述种类的存储器的组合。
基于与上述系统信息变更指示方法同一发明构思，如图7所示，本申请实施例还提供一种终端700，该终端700可用于执行图2所示的方法。其中，终端700包括收发器701、处理器702，存储器703，处理器702用于执行一组代码，当代码被执行时，该执行使得处理器702执行图2所示的方法。终端700还可以包括存储器703，用于存储处理器702所执行的代码。
处理器702可以是中央处理器(central processing unit，CPU)，网络处理器(network processor，NP)或者CPU和NP的组合。
处理器702还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，ASIC)，可编程逻辑器件(programmable logic device，PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)，现场可编程逻辑门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic,GAL)或其任意组合。
存储器703可以包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；存储器703也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)，硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；存储器703还可以包括上述种类的存储器的组合。
本申请实施例提供了一种计算机存储介质，存储有计算机程序，该计算机程序包括用于执行图2所示的方法。
本申请实施例提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行图2所示的方法。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请实施例的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (24)

  1. 一种系统信息变更指示方法，其特征在于，包括：
    基站确定待发送的系统信息中第一系统信息块SIB发生变化，其中，所述第一SIB中携带定位辅助数据；
    所述基站向终端发送携带变更指示的消息，其中，所述变更指示用于通知所述终端所述第一SIB发生变化。
  2. 如权利要求1所述的方法，其特征在于，所述系统信息中的第二SIB中携带至少一个值标签，其中一个所述值标签用于表征：指定的m个所述第一SIB中定位辅助数据是否发生变化，所述m为正整数。
  3. 如权利要求1所述的方法，其特征在于，所述变更指示为至少一个值标签，其中一个所述值标签用于表征：指定的m个所述第一SIB中定位辅助数据是否发生变化，所述m为正整数。
  4. 如权利要求2或3所述的方法，其特征在于，所述指定的m个所述第一SIB中包含的公共定位辅助数据；或者，所述指定的m个所述第一SIB中包含的与卫星导航系统相关的定位辅助数据。
  5. 如权利要求2或3所述的方法，其特征在于，所述至少一个值标签包括第一值标签和第二值标签；
    所述第一值标签用于表征第一类SIB中定位辅助数据是否发生变化，所述第一类SIB中包含的定位辅助数据为公共定位辅助数据；
    所述第二值标签用于表征第二类SIB中定位辅助数据是否发生变化，所述第二类SIB中包含的定位辅助数据为与卫星导航系统相关的定位辅助数据。
  6. 如权利要求1～5任一项所述的方法，其特征在于，所述携带变更指示的消息包括以下任意一种：
    寻呼消息、无线资源控制RRC消息、长期演进定位协议LPP消息，系统消息。
  7. 一种系统信息变更指示的方法，其特征在于，包括：
    终端获取基站发送的消息中携带的变更指示；
    所述终端根据所述变更指示，确定系统信息中携带定位辅助数据的第一系统信息块SIB发生变化；
    所述终端若需要进行定位，则读取所述系统信息中携带定位辅助数据的所述第一SIB。
  8. 如权利要求7所述的方法，其特征在于，所述系统信息中指定的第二SIB中携带至少一个值标签，任意一个所述值标签用于表征：指定的m个所述第一SIB中定位辅助数据是否发生变化，所述m为正整数；
    所述方法还包括：
    所述终端读取所述第二SIB中携带的所述至少一个值标签，根据所述至少一个值标签确定所述系统信息中发生变化的第一SIB，并读取所述发生变化的第一SIB。
  9. 如权利要求7所述的方法，其特征在于，所述变更指示为至少一个值标签，任意一个所述值标签用于表征：指定的m个所述第一SIB中定位辅助数据是否发生变化，所述m为正整数。
  10. 如权利要求8或9所述的方法，其特征在于，所述指定的m个所述第一SIB中包 含的公共定位辅助数据；或者，所述指定的m个所述第一SIB中包含的与卫星导航系统相关的定位辅助数据。
  11. 如权利要求8或9所述的方法，其特征在于，所述至少一个值标签包括第一值标签和第二值标签；
    所述第一值标签用于表征第一类SIB中定位辅助数据是否发生变化，所述第一类SIB中包含的定位辅助数据为公共定位辅助数据；
    所述第二值标签用于表征第二类SIB中定位辅助数据是否发生变化，所述第二类SIB中包含的定位辅助数据为与卫星导航系统相关的定位辅助数据。
  12. 如权利要求7～11任一项所述的方法，其特征在于，所述携带变更指示的消息包括以下任意一种：
    寻呼消息、无线资源控制RRC消息、长期演进定位协议LPP消息，系统消息。
  13. 一种系统信息变更指示装置，其特征在于，包括：
    处理单元，用于确定待发送的系统信息中第一系统信息块SIB发生变化，其中，所述第一SIB中携带定位辅助数据；
    发送单元，用于向终端发送携带变更指示的消息，其中，所述变更指示用于通知所述终端所述第一SIB发生变化。
  14. 如权利要求13所述的装置，其特征在于，所述系统信息中的第二SIB中携带至少一个值标签，其中一个所述值标签用于表征：指定的m个所述第一SIB中定位辅助数据是否发生变化，所述m为正整数。
  15. 如权利要求13所述的装置，其特征在于，所述变更指示为至少一个值标签，其中一个所述值标签用于表征：指定的m个所述第一SIB中定位辅助数据是否发生变化，所述m为正整数。
  16. 如权利要求14或15所述的装置，其特征在于，所述指定的m个所述第一SIB中包含的公共定位辅助数据；或者，所述指定的m个所述第一SIB中包含的与卫星导航系统相关的定位辅助数据。
  17. 如权利要求14或15所述的装置，其特征在于，所述至少一个值标签包括第一值标签和第二值标签；
    所述第一值标签用于表征第一类SIB中定位辅助数据是否发生变化，所述第一类SIB中包含的定位辅助数据为公共定位辅助数据；
    所述第二值标签用于表征第二类SIB中定位辅助数据是否发生变化，所述第二类SIB中包含的定位辅助数据为与卫星导航系统相关的定位辅助数据。
  18. 如权利要求13～17任一项所述的装置，其特征在于，所述携带变更指示的消息包括以下任意一种：
    寻呼消息、无线资源控制RRC消息、长期演进定位协议LPP消息，系统消息。
  19. 一种系统信息变更指示的装置，其特征在于，包括：
    接收单元，用于获取基站发送的消息中携带的变更指示；
    处理单元，用于根据所述变更指示，确定系统信息中携带定位辅助数据的第一系统信息块SIB发生变化；
    所述处理单元，还用于若需要进行定位，则读取所述系统信息中携带定位辅助数据的所述第一SIB。
  20. 如权利要求19所述的装置，其特征在于，所述系统信息中指定的第二SIB中携带至少一个值标签，任意一个所述值标签用于表征：指定的m个所述第一SIB中定位辅助数据是否发生变化，所述m为正整数；
    所述处理单元还用于：
    读取所述第二SIB中携带的所述至少一个值标签，根据所述至少一个值标签确定所述系统信息中发生变化的第一SIB，并读取所述发生变化的第一SIB。
  21. 如权利要求19所述的装置，其特征在于，所述变更指示为至少一个值标签，任意一个所述值标签用于表征：指定的m个所述第一SIB中定位辅助数据是否发生变化，所述m为正整数。
  22. 如权利要求20或21所述的装置，其特征在于，所述指定的m个所述第一SIB中包含的公共定位辅助数据；或者，所述指定的m个所述第一SIB中包含的与卫星导航系统相关的定位辅助数据。
  23. 如权利要求20或21所述的装置，其特征在于，所述至少一个值标签包括第一值标签和第二值标签；
    所述第一值标签用于表征第一类SIB中定位辅助数据是否发生变化，所述第一类SIB中包含的定位辅助数据为公共定位辅助数据；
    所述第二值标签用于表征第二类SIB中定位辅助数据是否发生变化，所述第二类SIB中包含的定位辅助数据为与卫星导航系统相关的定位辅助数据。
  24. 如权利要求19～23任一项所述的装置，其特征在于，所述携带变更指示的消息包括以下任意一种：
    寻呼消息、无线资源控制RRC消息、长期演进定位协议LPP消息，系统消息。
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