WO2017063463A1 - 一种提供定位服务的方法、基站及终端 - Google Patents

一种提供定位服务的方法、基站及终端 Download PDF

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Publication number
WO2017063463A1
WO2017063463A1 PCT/CN2016/097850 CN2016097850W WO2017063463A1 WO 2017063463 A1 WO2017063463 A1 WO 2017063463A1 CN 2016097850 W CN2016097850 W CN 2016097850W WO 2017063463 A1 WO2017063463 A1 WO 2017063463A1
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WIPO (PCT)
Prior art keywords
base station
positioning
information
terminal
positioning service
Prior art date
Application number
PCT/CN2016/097850
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English (en)
French (fr)
Inventor
李男
胡南
丁海煜
Original Assignee
中国移动通信集团公司
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Application filed by 中国移动通信集团公司 filed Critical 中国移动通信集团公司
Priority to US15/768,545 priority Critical patent/US10314002B2/en
Publication of WO2017063463A1 publication Critical patent/WO2017063463A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/003Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment
    • 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
    • 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
    • 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
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02Position-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
    • G01S5/0257Hybrid positioning
    • G01S5/0263Hybrid positioning by combining or switching between positions derived from two or more separate positioning systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02Services making use of location information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices

Definitions

  • the present disclosure relates to the field of wireless communications, and in particular, to a method, a base station, and a terminal for providing a location service.
  • the positioning accuracy of GPS Global Positioning System
  • the plane position error is less than 100m
  • the elevation error is less than 1.56m.
  • the single-point positioning accuracy of the GPS has been improved, it can only reach 20 to 40 m, and the positioning accuracy of the Beidou positioning system is also similar.
  • the above accuracy levels are difficult to meet the accuracy requirements of some application areas, such as: aircraft landing, ship arrival, vehicle network scheduling.
  • the industry has proposed to use GPS/Beidou differential positioning method to improve positioning accuracy.
  • the positioning accuracy can reach meters or even centimeters.
  • the wide-area difference is separated and estimated by the positioning server, and the satellite satellite ephemeris, the satellite clock error correction and the atmospheric delay model are used for single-point positioning, thereby improving the positioning accuracy and positioning.
  • the error is basically independent of the distance from the user to the base station.
  • the wide-area difference method is complicated in technology, and it has a large investment, a long period of time, and involves many industries and departments.
  • the use of the idle channel of the broadcast signal to propagate the differential information also requires the terminal to add additional receivers and corresponding software parsing functions, and thus is not suitable for a large number of required location services.
  • the single-station differential structure and algorithm are simple and mature, and are suitable for differential positioning in a small range.
  • the terminal can only receive a correction signal from a base station due to single station differential, the reliability of the system Poor.
  • the base station fails, the location service cannot be provided.
  • the regional difference Since the regional difference has multiple reference stations and takes into account the influence of the position on the differential correction, the reliability of the entire system and the positioning accuracy of the user are greatly improved. However, as with the single station difference, the effects caused by various error sources are considered together in the processing. When the distance between the base station and the terminal is long, the error is large and the precision is low.
  • the existing differential positioning method requires an additional communication link with the terminal to transmit "positioning correction information", which increases the cost and complexity of the terminal.
  • positioning correction information increases the cost and complexity of the terminal.
  • a large number of positioning base stations need to be built, adding a lot of construction and maintenance costs.
  • the present disclosure provides a method, a base station, and a terminal for providing a positioning service, which solves the problem that the differential positioning method is complicated and the construction and maintenance cost is high in the prior art.
  • a method for providing a location service is provided, which is applied to a base station, the method comprising:
  • the positioning service capability indication information includes: indication information of whether the base station supports the positioning service, positioning service type information supported by the base station, positioning function type information supported by the base station, and positioning service supported by the base station One or more of the accuracy information and/or delay guarantee information.
  • the sending the location service capability indication information to the terminal includes:
  • the positioning service capability indication information is sent to the terminal by using an application layer message of the base station.
  • the method further includes:
  • the terminal According to the location service request, the terminal provides corresponding location service information.
  • the terminal provides corresponding positioning service information, including:
  • the corresponding positioning service information is provided to the terminal through unicast.
  • the total amount of data corresponding to different transmission modes is determined, and the bearer mode with the smallest total data overhead is selected as the corresponding positioning to the terminal.
  • the bearer mode for providing the corresponding location service information to the terminal is determined according to the delay parameter carried in the location service request.
  • the sending moment of the positioning service information is determined by the base station according to the delay parameter carried in the positioning service request.
  • the sending period of the positioning service information is determined by the base station according to the positioning service information sending period parameter carried in the positioning service request.
  • the location service information is provided to the terminal according to the location service request, including:
  • the location service information matching the location service type and the location function type is provided to the terminal according to the location service type and the location function type carried in the location service request.
  • the method further includes:
  • the base station fails to satisfy the location service request, forwards the location service request to the neighboring base station or the location server;
  • the neighboring base station or the location server When the neighboring base station or the location server can satisfy the location service request, the neighboring base station or the location server forwards the location service information provided by the terminal that initiates the location service request to the terminal.
  • a method for providing a location service which is applied to a terminal, and the method includes:
  • the location service capability indication information includes: indication information of whether the base station supports the location service, location service type information supported by the base station, location function type information supported by the base station, One or more of accuracy information and/or delay guarantee information of the positioning service supported by the base station.
  • the method further includes:
  • reporting the location service request to the base station includes:
  • the location service request is reported to the base station of the serving cell according to at least one of the location service type, the location function type, and the location service requirement of the application or the service supported by the terminal.
  • a base station comprising:
  • a first sending module configured to send the positioning service capability indication information to the terminal, where the positioning service capability indication information includes: indication information of whether the base station supports the positioning service, location service type information supported by the base station, and a positioning function type supported by the base station One or more of information, accuracy information of the positioning service supported by the base station, and/or delay guarantee information.
  • a terminal comprising:
  • the second receiving module is configured to receive the location service capability indication information that is sent by the base station of the serving cell, where the location service capability indication information includes: indication information of whether the base station supports the location service, location service type information supported by the base station, and the base station Supported positioning function type information, base One or more of the accuracy information and/or delay guarantee information of the location service supported by the station.
  • At least one of the above technical solutions has the following beneficial effects:
  • the terminal directly interacts with the base station, and the base station directly provides the corresponding positioning service information for the terminal, which greatly reduces the transmission delay and improves the positioning accuracy of the terminal to a certain extent.
  • FIG. 1 shows a flow chart of a method of providing a location service in a first embodiment of the present disclosure
  • FIG. 2 is a flow chart showing a method of providing a location service in a second embodiment of the present disclosure
  • FIG. 3 is a flow chart showing a method of providing a location service in a third embodiment of the present disclosure
  • FIG. 4 is a flow chart showing a method of providing a location service in a fifth embodiment of the present disclosure
  • Figure 5 is a block diagram showing a base station in a sixth embodiment of the present disclosure.
  • Fig. 6 is a block diagram showing the terminal of the seventh embodiment of the present disclosure.
  • a first embodiment of the present disclosure provides a method of providing a location service, which is applied to a base station.
  • the base station may be a TD-SCDMA/TD-LTE network base station, and is of course not limited thereto.
  • the method specifically includes the following step S101.
  • step S101 the location service capability indication information is sent to the terminal.
  • the terminal provides the positioning service capability indication information for indicating whether the terminal sends the positioning service request.
  • the location service capability indication information mentioned herein includes, for example, the base station is indication information that all supports the location service, the location service type information supported by the base station (supported location service types, such as GPS, Beidou, Glonass, etc.), and the base station.
  • Supported positioning function type information such as providing basic location information of the base station, providing wide-area differential correction information, providing single-station or regional differential correction information), accuracy information of the positioning service supported by the base station, and/or delay guarantee information (accuracy) One or more of the rank, the delay grade).
  • the sending the location service capability indication information to the terminal includes:
  • the positioning service capability indication information is sent to the terminal by using an application layer message of the base station.
  • the base station may also send the positioning service capability indication information to the terminals in the coverage of the serving cell in other manners, which are not illustrated here.
  • the method may further include the following steps S102 and S103.
  • step S102 the receiving terminal requests the location service according to the location service capability indication information.
  • the terminal when the location service capability indication information sent to the terminal indicates that the base station supports the location service capability, the terminal sends a location service request to the base station, or when the location service capability indication information sent to the terminal indicates that the base station supports When the location service type includes the location service type supported by the terminal, the terminal sends a location service request to the base station to save unnecessary signaling overhead.
  • the base station receives the location service request reported by the terminal in the cell coverage area, and the location service request may be carried by the dedicated signaling or the application layer signaling. That is, the base station receives the location service request sent by the terminal through the application layer message.
  • step S103 corresponding positioning service information is provided to the terminal according to the positioning service request.
  • the base station can provide the location service, and the provided location service capability satisfies the location service request of the terminal, or when the neighboring base station or the location server of the base station can provide the location service and can satisfy the location service request of the terminal, provide the terminal with the location service request Corresponding location service information.
  • the network service is refused to provide corresponding location service information, and a location service rejection response is sent to the terminal. .
  • the locating service information is provided in the following manner: the base station provides the corresponding positioning service information to the terminal by using the broadcast mode; or the corresponding positioning service information is provided to the terminal through the multicast mode; or The corresponding positioning service information is provided to the terminal through unicast.
  • the determining of the bearer mode of the location service information may be implemented according to one of the following ways:
  • the base station determines the number of terminals that initiate the positioning service request within a predetermined time period or a predetermined service period to minimize the related signaling overhead required for the system positioning service.
  • different bearer modes may be determined for different location service type location services. That is to say, the base station determines the bearer mode of the location service information according to the number of terminals requesting the location service request with the same location service type initiated within a certain time or period.
  • the base station when the number of terminals that initiate a positioning service request of a certain positioning service type exceeds the first threshold in a certain period of time or period, the base station carries the positioning service information by broadcasting; when a positioning service request of a certain positioning service type is initiated The base station adopts the multicast mode to carry the location service information when the number of terminals exceeds the second threshold value of the first threshold; when the number of terminals that initiate the location service request of a certain location service type is lower than the second threshold The base station carries the location service information in a unicast manner.
  • the first threshold value and the second threshold value those skilled in the art can set as needed, as long as the basic requirements of different transmission modes such as a broadcast mode, a multicast mode, and a unicast mode are satisfied.
  • the base station determines the number of terminals that need to provide location services within a predetermined time period or a predetermined service period to minimize the related signaling overhead required for the system location service. Specifically, the base station determines the bearer mode of the location service information according to the number of terminals having the same location service type requirement in a certain time or period. For the specific determination method, reference may be made to the first method, and therefore no further details are provided herein.
  • Manner 3 Determine according to the amount of location service information that is expected to be sent within a predetermined time period or a predetermined service period. For example, when the amount of information of the location service information to be sent by a certain location service type exceeds the first threshold in a certain period of time or period, the base station carries the location service information by broadcasting; when a certain location service is available within a certain time or period When the amount of information about the location service information to be sent exceeds the second threshold value lower than the first threshold, the base station uses the multicast mode to carry the location service information; when a certain type of service is required within a certain time or period When the amount of information of the sent location service information is lower than the second threshold, the base station carries the location service information in a unicast manner.
  • the first threshold value and the second threshold value those skilled in the art can set as needed, as long as the basic requirements of different transmission modes such as a broadcast mode, a multicast mode, and a unicast mode are satisfied.
  • the base station may also determine the number of terminals that need to provide positioning services and the amount of positioning information according to a predetermined time or a predetermined service period to determine the total amount of data corresponding to different sending modes.
  • the bearer mode with the smallest total data overhead is used as the bearer mode for providing the corresponding location service information to the terminal.
  • the number of terminals that the base station can request by the positioning service of the positioning service type and the corresponding positioning service information sending period determine the total data corresponding to the positioning service information that needs to be transmitted by using different bearer modes in a certain period of time or period.
  • the bearer mode with the smallest total data cost is used to carry the location service information.
  • Manner 5 Determine a bearer mode for providing corresponding location service information to the terminal according to the delay parameter carried in the location service request. Specifically, when the terminal establishes a lower delay (s level) for the positioning service, and the positioning service terminal has more, the base station transmits in a broadcast or multicast manner. For example, the broadcast information SIB_X is newly defined, and the transmission period is s-level; or some subframes are configured as MBSFN subframes for multicast. When the terminal establishes a high delay for the positioning service (ms level), the base station can transmit in a unicast manner. When the terminal has a lower delay requirement for the positioning service (s level) and the number of terminals requiring the positioning service is small, the base station transmits in a unicast manner.
  • s level the broadcast information SIB_X is newly defined, and the transmission period is s-level; or some subframes are configured as MBSFN subframes for multicast.
  • the terminal directly interacts with the base station, and the base station directly provides the corresponding positioning service information for the terminal, which greatly reduces the transmission delay and improves the positioning accuracy of the terminal to a certain extent.
  • the above first embodiment provides a brief introduction to the method for providing a location service in the present disclosure. This will be further described below with reference to FIG. 2, specifically including step S201 and step S202.
  • step S201 the receiving terminal requests the location service according to the location service capability indication information.
  • the positioning service request carries the positioning precision, the delay parameter, and the positioning service information sending period parameter required by the terminal. Specifically, the sending time of the positioning service information is determined by the base station according to the delay parameter carried in the positioning service request, and the sending period of the positioning service information is determined by the base station according to the positioning service information sending period parameter carried in the positioning service request.
  • step S202 the positioning service information matching the positioning accuracy parameter is provided to the terminal according to the positioning precision parameter carried in the positioning service request.
  • the positioning accuracy parameters sent by the terminal there is an information bit that indicates the accuracy requirement or accuracy level required by the terminal.
  • the accuracy level is divided into 1-9 levels from high to low, characterized by 3 bits of information.
  • the 3 bit information bit in the positioning accuracy parameter represents an accuracy level of 3, indicating that the base station can meet the accuracy requirement of the terminal, and can provide corresponding positioning service information.
  • the delay level can be divided into 1-9 levels from high to low, and is also characterized by 3bit information.
  • the delay parameter sent by the terminal has the delay requirement or delay level required by the information user to characterize the terminal.
  • the third embodiment specifically includes the following steps S301 to S302, as shown in FIG. 3.
  • step S301 the receiving terminal requests the location service according to the location service capability indication information.
  • the location service request includes a location service type and a location function type required by the terminal.
  • the location service types include: GPS satellite positioning service, Beidou satellite positioning service, GLONASS (GLONASS) satellite positioning service, base station assisted positioning service, enhanced cell identification positioning, arrival time difference positioning method, base station location information, and the like.
  • the positioning function types include: wide-area differential positioning function, single-station differential positioning function, base station basic position information function, and base station-assisted satellite positioning function.
  • step S302 the location service information matching the location service type and the location function type is provided to the terminal according to the location service type and the location function type carried in the location service request.
  • the base station selects the location service information that matches the location service type and the location function type that the terminal requires.
  • the location service type of the terminal is GPS satellite positioning and the location function type is auxiliary search star service
  • the base station or the location server can provide the terminal with location information of the GPS satellite searchable at the terminal location, such as satellite number and satellite elevation angle.
  • location information of the GPS satellite searchable at the terminal location such as satellite number and satellite elevation angle.
  • One or more kinds of information such as satellite azimuth, satellite clock parameter, and ephemeris parameters.
  • the base station or the positioning server may provide the terminal with the location information of the Beidou satellite searchable at the terminal location, such as the satellite number, the satellite elevation angle, Satellite azimuth, satellite clock parameter, ephemeris parameters, etc., and one or more of differential information satellite identification, differential distance error index, regional user distance error index, and equivalent clock error correction required for wide-area difference.
  • the positioning service type of the terminal is Beidou satellite positioning and the positioning function type is single station differential positioning
  • the base station or the positioning server sends the locally corrected position error or distance error parameter to the terminal for differential positioning enhancement.
  • the second embodiment and the third embodiment respectively introduce two implementation manners for providing location service information for the terminal, where the foregoing two methods can be implemented in combination.
  • the positioning service type, the positioning function type, the positioning accuracy, the delay parameter, and the positioning service information sending period parameter required by the base station integrated terminal select the corresponding positioning service information for the terminal.
  • location service type is "Beidou differential positioning”
  • accuracy level is “1”
  • delay level is “2”
  • base station can provide positioning
  • the service capability is:
  • the type of "location service” that can be supported includes “Beidou differential positioning” and "GPS differential positioning”.
  • the "accuracy level” is a service that can provide accuracy level 1 when supporting Beidou differential positioning, "delay level”
  • a service with a delay level of 1 can be provided. It can be seen that the base station can meet the positioning service requirements required by the terminal, and can provide corresponding positioning service information for the terminal.
  • the method of providing location services is also applicable to the following scenarios:
  • the location service request is forwarded to the neighboring base station or the location server.
  • the neighboring base station or the location server When the neighboring base station or the location server can satisfy the location service request, the neighboring base station or the location server forwards the location service information provided by the terminal that initiates the location service request to the terminal.
  • the information in the location service request sent by the terminal is: “location service type” is “Beidou differential positioning”, “accuracy level” is “1”, “delay level” is “2”; positioning provided by the base station
  • the service capability is:
  • the supported “location service type” includes “Beidou differential positioning” and “GPS differential positioning”, and the "accuracy level” is to provide a service with an accuracy level of 2 when supporting Beidou differential positioning, "delay level”
  • a service with a delay level of 2 can be provided.
  • the base station cannot meet the positioning service requirements required by the user terminal.
  • the base station can obtain the location service type and corresponding capability of the neighboring base station or the positioning server through the communication mode such as the X2 interface or the data private line, and build the terminal for the terminal.
  • the virtual bearer becomes the relay node of the terminal location service.
  • the positioning service capability that a neighboring base station can provide is as follows: the supported "location service type" includes "Beidou differential positioning" and "GPS differential positioning", and the "accuracy level" is to support the Beidou differential positioning. A service with a precision level of 1 is provided.
  • the “delay level” provides a service with a delay level of 1 when the Beidou differential positioning is supported. It can be seen that the neighboring base station can meet the positioning service requirement of the terminal.
  • the base station determines whether the neighboring base station can meet the positioning service "delay level" requirement of the terminal by using the "delay level" of the positioning service of the neighboring base station and the round-trip delay of the signaling interaction with the neighboring base station. For example, when it is determined that the service requirement can be met, the positioning service bearer is established to the neighboring base station, and the positioning service message is actually provided by the neighboring base station, and is transmitted to the base station through the inter-base station interface, and then sent by the base station to the terminal.
  • the method for providing a location service specifically includes step S401.
  • step S401 the positioning service capability indication information delivered by the base station of the serving cell is received.
  • the positioning service capability indication information includes: indication information of whether the base station supports the positioning service (whether or not the positioning service capability information is supported), and location service type information supported by the base station (supported positioning service type, such as GPS) , Beidou, Glonass, etc.), positioning function type information supported by the base station (such as providing base station basic position information, providing wide-area differential correction information, providing single-station or regional differential correction information), accuracy information of the positioning service supported by the base station, and/or One or more of the delay guarantee information (accuracy level, delay level).
  • the method may further include steps S402 and S403.
  • step S402 the location service request is reported to the base station according to the location service capability indication information.
  • the terminal when the location service capability indication information sent to the terminal indicates that the base station supports the location service capability, the terminal sends a location service request to the base station, or when the location service capability indication information sent to the terminal indicates that the base station supports When the location service type includes the location service type supported by the terminal, the terminal sends a location service request to the base station to save unnecessary signaling overhead.
  • the terminal reports a location service request to the base station to which the serving cell is currently located, where the location service request may be carried by dedicated signaling or application layer signaling. That is, the terminal may send a location service request to the base station through the application layer message.
  • step S403 the receiving base station provides a corresponding positioning service letter according to the positioning service request. interest.
  • the terminal When the base station can provide the location service, and the provided location service capability satisfies the location service request of the terminal, or when the neighboring base station or the location server of the base station can provide the location service and can satisfy the location service request of the terminal, the terminal receives the base station. Provide corresponding location service information.
  • the terminal receives the location service rejection response sent when the base station rejects the location service request.
  • the bearer mode of the location service information is determined by the base station according to the number of terminals that initiate the location service request within a predetermined time or a predetermined service period to minimize the related signaling overhead required for the system location service.
  • different bearer modes may be determined for different positioning service type location services, that is, the base station determines the location service information according to the number of terminals that have the same location service type requesting location service request initiated within a certain time or period. The way of carrying.
  • the base station when the number of terminals that initiate a positioning service request of a certain positioning service type exceeds the first threshold in a certain period of time or period, the base station carries the positioning service information by broadcasting; when a positioning service request of a certain positioning service type is initiated The base station adopts the multicast mode to carry the location service information when the number of terminals exceeds the second threshold value of the first threshold; when the number of terminals that initiate the location service request of a certain location service type is lower than the second threshold The base station carries the location service information in a unicast manner.
  • the first threshold value and the second threshold value those skilled in the art can set as needed, as long as the basic requirements of different transmission modes such as a broadcast mode, a multicast mode, and a unicast mode are satisfied.
  • the location service request is reported to the base station, including:
  • the location service request is reported to the base station of the serving cell according to at least one of the location service type, the location function type, and the location service requirement of the application or the service supported by the terminal. And providing, by the base station, the sending to the base station according to the obtained positioning service capability indication information combined with the positioning service type supported by the terminal, the positioning function type, and the positioning service requirement of the terminal application or the service.
  • the terminal sends a location service request to the base station.
  • embodiments of the present disclosure can reduce construction and maintenance costs by utilizing existing mobile cellular base stations to provide corresponding positioning services without the need to construct a large number of positioning reference stations.
  • the terminal directly interacts with the base station, and the base station directly provides the corresponding positioning service information for the terminal, which greatly reduces the transmission delay and improves the positioning accuracy of the terminal to a certain extent.
  • a base station is also provided. As shown in FIG. 5, the base station includes a first transmitting module 51.
  • the first sending module 51 is configured to send the positioning service capability indication information to the terminal.
  • the location service capability indication information includes: indication information of whether the base station supports the location service, location service type information supported by the base station, location function type information supported by the base station, accuracy information of the location service supported by the base station, and/or delay guarantee information. One or more of them.
  • the first sending module 51 may further include:
  • a first sending unit configured to send the positioning service capability indication information to the terminal by using a broadcast message of the base station
  • a second sending unit configured to send positioning service capability indication information to the terminal by using a common search area of control signaling of the base station;
  • a third sending unit configured to send the positioning service capability indication information to the terminal by using the radio resource control information of the base station;
  • a fourth sending unit configured to send the positioning service capability indication information to the terminal by using an application layer message of the base station.
  • the base station further includes:
  • a first receiving module configured to receive, by the terminal, a positioning service request that is reported according to the location service capability indication information
  • the processing module is configured to provide corresponding positioning service information to the terminal according to the positioning service request.
  • the processing module includes:
  • a first processing unit configured to provide corresponding positioning service information to the terminal by using a broadcast manner
  • a second processing unit configured to provide corresponding positioning service information to the terminal by using a multicast mode
  • the third processing unit is configured to provide corresponding positioning service information to the terminal by using a unicast manner.
  • the base station further includes:
  • a first bearer module configured to determine, according to the number of terminals that initiate a positioning service request within a predetermined time period or a predetermined service period, a bearer mode for providing corresponding positioning service information to the terminal;
  • a second bearer module configured to determine, according to the number of terminals that need to provide a positioning service within a predetermined time period or a predetermined service period, a bearer mode for providing corresponding positioning service information to the terminal;
  • a third bearer module configured to determine, according to the amount of location service information that is expected to be sent within a predetermined time period or a predetermined service period, a bearer mode for providing corresponding positioning service information to the terminal;
  • the fourth bearer module is configured to determine the number of terminals that need to provide the positioning service and the amount of positioning information according to the predetermined time or the predetermined service period, to determine the total amount of data corresponding to different sending modes, and select the bearer mode with the smallest total data overhead. As a bearer manner for providing corresponding positioning service information to the terminal; or
  • the fifth bearer module is configured to determine, according to the delay parameter carried in the location service request, a bearer manner for providing corresponding positioning service information to the terminal.
  • the base station further includes:
  • a first determining module configured to determine, according to a delay parameter carried in the positioning service request, a sending moment of the positioning service information
  • the second determining module is configured to determine a sending period of the positioning service information according to the positioning service information sending period parameter carried in the positioning service request.
  • the processing module further includes:
  • a fourth processing unit configured to provide positioning service information that matches the positioning accuracy parameter to the terminal according to the positioning precision parameter carried in the positioning service request;
  • the fifth processing unit is configured to provide the location service information that matches the location service type and the location function type to the terminal according to the location service type and the location function type carried in the location service request.
  • the base station further includes:
  • a first forwarding module configured to forward a positioning service request to a neighboring base station or a positioning server when the base station cannot meet the positioning service request
  • the second forwarding module is configured to: when the neighboring base station or the positioning server can meet the positioning service request, forward the positioning service information provided by the neighboring base station or the positioning server to the terminal that initiates the positioning service request to the terminal.
  • a terminal is also provided. As shown in FIG. 6, the terminal includes a second receiving module 61.
  • the second receiving module 61 is configured to receive the positioning service capability indication information that is sent by the base station of the serving cell.
  • the location service capability indication information includes: indication information of whether the base station supports the location service, location service type information supported by the base station, location function type information supported by the base station, accuracy information of the location service supported by the base station, and/or delay guarantee information. One or more of them.
  • the terminal further includes:
  • a second sending module configured to report a positioning service request to the base station according to the location service capability indication information
  • the third receiving module is configured to receive corresponding positioning service information provided by the base station according to the positioning service request.
  • the second sending module includes:
  • the fifth sending unit is configured to report a positioning service request to the base station of the serving cell according to at least one of a positioning service type, a positioning function type, and a positioning service requirement of the application or the service supported by the terminal.
  • the terminal corresponds to the method for providing a location service introduced in the foregoing fifth embodiment. All the implementation manners in the foregoing method embodiments are applicable to the embodiment of the terminal, and the same technical effect can be achieved.

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Abstract

本公开文本公开了一种提供定位服务的方法、基站及终端。该提供定位服务方法包括:向终端发送提供定位服务能力指示信息;接收终端根据提供定位服务能力指示信息上报的定位服务请求;根据定位服务请求,向终端提供相应的定位服务信息。本公开文本通过利用现有的移动蜂窝基站提供相应的定位服务,无需建造大量的定位基准站,可降低建设和维护成本。此外,终端直接与基站交互,基站直接为终端提供相应的定位服务信息,大大降低了传输时延,在一定程度上提高了终端的定位精度。

Description

一种提供定位服务的方法、基站及终端
相关申请的交叉参考
本申请主张在2015年10月15日在中国提交的中国专利申请号No.201510666776.1的优先权,其全部内容通过引用包含于此。
技术领域
本公开文本涉及无线通信领域,尤其涉及一种提供定位服务的方法、基站及终端。
背景技术
传统上,由于受到美国的SA(选择可用性,Selective Availability)政策的限制,因此未经美国政府授权的GPS(全球定位系统,Global Positioning System)的定位精度会被降低,具体的,平面位置误差小于100m,而高程误差小于1.56m。在SA政策取消后,虽然GPS的单点定位精度有所提高,但是其也只能达到20至40m,而北斗定位系统的定位精度也在类似量级上。上述精度水平难以满足一些应用领域的精度需求,例如:飞机着陆、船舶进港、车联网调度等。
近来,业界提出利用GPS/北斗差分定位方法来提升定位精度,部分场景下的定位精度可达到米级甚至厘米级。通常差分定位方法有三种,即广域差分、单站差分、区域差分方法。
具体的,广域差分由于通过定位服务器对各种误差进行了分离和估计,利用较准确的卫星星历、卫星钟钟差改正和大气延迟模型进行单点定位,从而提高了定位精度,且定位误差基本上与用户至基准站的距离无关。但是广域差分方法技术复杂、组建时投资大、周期长、涉及较多的行业和部门。此外,利用广播信号的空闲信道传播差分信息也需要终端增加额外的接收机和对应的软件解析功能,因此不适用于大量需求的定位服务。
单站差分结构和算法简单,技术成熟,适用于小范围内的差分定位工作。但由于单站差分时终端只能收到一个基准站的改正信号,所以系统的可靠性 较差。相应的,当基准站出故障后,无法提供定位服务。
区域差分由于具有多个基准站,而且顾及了位置对差分改正的影响,整个系统的可靠性和用户的定位精度都有较大提高。但与单站差分一样,在处理过程中都是把各种误差源所造成的影响合并在一起考虑的,当基准站和终端距离较远时误差较大,精度较低。
现有的差分定位方法一方面都需要额外的与终端的通信链路传递“定位改正信息”,增加终端的成本和复杂度。另一方面,需要新建大量的定位基准站,增加大量的建设和维护成本。
在移动互联网时代,商家和用户都需要更加精确及时的位置信息来获得更多的商业机会或更精细化的定制服务。随着车联网的不断发展,未来对精确定位的需求将进一步提升,辅助高精度定位业务将可能未来成为全网用户高频次发生的重要应用。
发明内容
(一)要解决的技术问题
本公开文本提供了一种提供定位服务的方法、基站及终端,解决了现有技术中差分定位方法复杂、建设维护成本高的问题。
(二)技术方案
依据本公开文本的一个方面,提供了一种提供定位服务的方法,应用于基站,该方法包括:
向终端发送提供定位服务能力指示信息;其中,提供定位服务能力指示信息包括:基站是否支持定位服务的指示信息、基站支持的定位服务类型信息、基站支持的定位功能类型信息、基站支持的定位服务的精度信息和/或时延保障信息中的一种或多种。
在其中一个可行的实施例中,向终端发送提供定位服务能力指示信息,包括:
通过基站的广播消息向终端发送提供定位服务能力指示信息;或者,
通过基站的控制信令的公共搜索区域向终端发送提供定位服务能力指示信息;或者,
通过基站的无线资源控制信息向终端发送提供定位服务能力指示信息;或者,
通过基站的应用层消息向终端发送提供定位服务能力指示信息。
在其中一个可行的实施例中,该方法还包括:
接收终端根据提供定位服务能力指示信息上报的定位服务请求;以及
根据定位服务请求,向终端提供相应的定位服务信息。
在其中一个可行的实施例中,向终端提供相应的定位服务信息,包括:
通过广播方式向终端提供相应的定位服务信息;或者,
通过组播方式向终端提供相应的定位服务信息;或者,
通过单播方式向终端提供相应的定位服务信息。
在其中一个可行的实施例中,根据预定时间内或预定业务周期内发起定位服务请求的终端的数量,确定向终端提供相应的定位服务信息的承载方式;或者,
根据预定时间内或预定业务周期内需要提供定位服务的终端的数量,确定向终端提供相应的定位服务信息的承载方式;或者,
根据预定时间内或预定业务周期内预期发送的定位服务信息量,确定向终端提供相应的定位服务信息的承载方式;或者,
根据预定时间内或预定业务周期内需要提供定位服务的终端数量、定位信息量,以确定采用不同发送方式所对应的数据总量,选择数据总量开销最小的承载方式作为向终端提供相应的定位服务信息的承载方式;或者,
根据定位服务请求中携带的时延参数确定向终端提供相应的定位服务信息的承载方式。
在其中一个可行的实施例中,定位服务信息的发送时刻由基站根据定位服务请求中携带的时延参数确定;和/或
定位服务信息的发送周期由基站根据定位服务请求中携带的定位服务信息发送周期参数确定。
在其中一个可行的实施例中,根据定位服务请求,向终端提供相应的定位服务信息,包括:
根据定位服务请求中携带的定位精度参数,向终端提供与定位精度参数 相匹配的定位服务信息;或者,
根据定位服务请求中携带的定位服务类型和定位功能类型,向终端提供与定位服务类型和定位功能类型相匹配的定位服务信息。
在其中一个可行的实施例中,该方法还包括:
当基站无法满足定位服务请求时,向相邻基站或定位服务器转发定位服务请求;以及
当相邻基站或定位服务器能够满足定位服务请求时,将相邻基站或定位服务器向发起定位服务请求的终端提供的定位服务信息转发至终端。
依据本公开文本的再一个方面,还提供了一种提供定位服务的方法,应用于终端,该方法包括:
接收服务小区的基站下发的提供定位服务能力指示信息;其中,提供定位服务能力指示信息包括:基站是否支持定位服务的指示信息、基站支持的定位服务类型信息、基站支持的定位功能类型信息、基站支持的定位服务的精度信息和/或时延保障信息中的一种或多种。
在其中一个可行的实施例中,该方法还包括:
根据提供定位服务能力指示信息,向基站上报定位服务请求;以及
接收基站根据定位服务请求提供的相应的定位服务信息。
在其中一个可行的实施例中,向基站上报定位服务请求包括:
根据终端自身所支持的定位服务类型、定位功能类型、以及应用程序或业务的定位服务需求中的至少一项,向服务小区的基站上报定位服务请求。
依据本公开文本的再一个方面,还提供了一种基站,该基站包括:
第一发送模块,用于向终端发送提供定位服务能力指示信息;其中,提供定位服务能力指示信息包括:基站是否支持定位服务的指示信息、基站支持的定位服务类型信息、基站支持的定位功能类型信息、基站支持的定位服务的精度信息和/或时延保障信息中的一种或多种。
依据本公开文本的再一个方面,还提供了一种终端,该终端包括:
第二接收模块,用于接收服务小区的基站下发的提供定位服务能力指示信息;其中,提供定位服务能力指示信息包括:基站是否支持定位服务的指示信息、基站支持的定位服务类型信息、基站支持的定位功能类型信息、基 站支持的定位服务的精度信息和/或时延保障信息中的一种或多种。
(三)有益效果
根据本公开文本具体实施例,上述技术方案中的至少一个具有以下有益效果:
通过利用现有的移动蜂窝基站提供相应的定位服务,无需建造大量的定位基准站,可降低建设和维护成本。此外,终端直接与基站交互,基站直接为终端提供相应的定位服务信息,大大降低了传输时延,在一定程度上提高了终端的定位精度。
附图说明
为了更清楚地说明本公开文本实施例或现有技术中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本公开文本的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1表示本公开文本第一实施例中提供定位服务的方法的流程图;
图2表示本公开文本第二实施例中提供定位服务的方法的流程图;
图3表示本公开文本第三实施例中提供定位服务的方法的流程图;
图4表示本公开文本第五实施例中提供定位服务的方法的流程图;
图5表示本公开文本第六实施例中基站的模块示意图;以及
图6表示本公开文本第七实施例中终端的模块示意图。
具体实施方式
下面结合附图和实施例,对本公开文本的具体实施方式做进一步描述。以下实施例仅用于说明本公开文本,但不用来限制本公开文本的范围。
为使本公开文本实施例的目的、技术方案和优点更加清楚,下面将结合本公开文本实施例的附图,对本公开文本实施例的技术方案进行清楚、完整地描述。显然,所描述的实施例是本公开文本的一部分实施例,而不是全部的实施例。基于所描述的本公开文本的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本公开文本保护的范围。
除非另作定义,此处使用的技术术语或者科学术语应当为本公开文本所属领域内具有一般技能的人士所理解的通常意义。本公开文本专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性,而只是用来区分不同的组成部分。同样,“一个”或者“一”等类似词语也不表示数量限制,而是表示存在至少一个。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接,而是可以包括电性的连接,不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系,当被描述对象的绝对位置改变后,则该相对位置关系也相应地改变。
下面将参照附图更详细地描述本公开文本的示例性实施例。虽然附图中显示了本公开文本的示例性实施例,然而应当理解,可以以各种形式实现本公开文本而不应被这里阐述的实施例所限制。相反,提供这些实施例是为了能够更透彻地理解本公开文本,并且能够将本公开文本的范围完整的传达给本领域的技术人员。
第一实施例
如图1所示,本公开文本的第一实施例中提供了一种提供定位服务的方法,应用于基站。该基站可以是TD-SCDMA/TD-LTE网络基站,当然也并不限于此。该方法具体包括以下步骤S101。
在步骤S101中,向终端发送提供定位服务能力指示信息。
为了避免终端反复发送无响应的定位服务请求的情况,向终端发送用于指示终端是否发送定位服务请求的提供定位服务能力指示信息。其中,这里所说的提供定位服务能力指示信息例如包括:基站是都支持定位服务的指示信息、基站所支持的定位服务类型信息(支持的定位服务类型,如GPS、Beidou、Glonass等)、基站所支持的定位功能类型信息(如提供基站基本位置信息、提供广域差分改正信息、提供单站或区域差分改正信息)、基站所支持的定位服务的精度信息和/或时延保障信息(精度等级、时延等级)中的一种或多种。
在其中一个可行的实施例中,向终端发送提供定位服务能力指示信息,包括:
通过基站的广播消息向终端发送提供定位服务能力指示信息;或者,
通过基站的控制信令的公共搜索区域向终端发送提供定位服务能力指示信息;或者,
通过基站的无线资源控制信息向终端发送提供定位服务能力指示信息;或者,
通过基站的应用层消息向终端发送提供定位服务能力指示信息。
值得指出的是,基站亦可通过其他方式向其服务小区覆盖范围内的终端发送提供定位服务能力指示信息,在这里不再一一举例说明。其中,该方法还可以包括以下步骤S102和S103。
在步骤S102中,接收终端根据提供定位服务能力指示信息上报的定位服务请求。
这里是指,当向终端发送的提供定位服务能力指示信息表明该基站支持定位服务能力时,终端才向基站发送定位服务请求,或者当向终端发送的提供定位服务能力指示信息表明该基站所支持的定位服务类型包括终端所支持的定位服务类型时,终端才向基站发送定位服务请求,以节省不必要的信令开销。其中,基站接收自身所覆盖的小区范围内的终端上报的定位服务请求,该定位服务请求可由专用信令或应用层信令承载。即,基站通过应用层消息接收终端发送的定位服务请求。
在步骤S103中,根据定位服务请求,向终端提供相应的定位服务信息。
当基站能够提供定位服务,且提供的定位服务能力满足终端的定位服务请求时,或者,当基站的相邻基站或定位服务器能够提供定位服务,且能够满足终端的定位服务请求时,向终端提供相应的定位服务信息。
当基站及相邻基站或定位服务器不能够提供定位服务,或提供的定位服务能力不能够满足终端的定位服务请求时,拒绝向终端提供相应的定位服务信息,并向终端发送一定位服务拒绝响应。
在其中一个可行的实施例中,定位服务信息的承载方式包括以下几种:基站通过广播方式向终端提供相应的定位服务信息;或者,通过组播方式向终端提供相应的定位服务信息;或者,通过单播方式向终端提供相应的定位服务信息。
具体地,定位服务信息的承载方式的确定可依据以下几种方式中的一种实现:
方式一:基站根据预定时间内或预定业务周期内发起定位服务请求的终端的数量确定,以最小化系统定位服务所需的相关信令开销。具体地,可针对不同的定位服务类型的定位服务确定不同的承载方式。也就是说,基站根据一定时间或周期内发起的具有同一定位服务类型的定位服务请求的终端数量,确定该定位服务信息的承载方式。例如:当一定时间或周期内,发起某种定位服务类型的定位服务请求的终端数量超过第一门限值时,基站通过广播方式承载定位服务信息;当发起某种定位服务类型的定位服务请求的终端数量超过低于第一门限值的第二门限值时基站采用组播方式承载定位服务信息;当发起某种定位服务类型的定位服务请求的终端数量低于第二门限值时,则基站通过单播方式承载定位服务信息。这里,关于第一门限值和第二门限值,本领域技术人员可以根据需要来设定,只要满足广播方式、组播方式和单播方式等不同发送方式的基本需求即可。
方式二:基站根据预定时间内或预定业务周期内需要提供定位服务的终端的数量确定,以最小化系统定位服务所需的相关信令开销。具体地,基站根据一定时间或周期内具有同一定位服务类型需求的终端数量,确定该定位服务信息的承载方式。具体确定方式可参照方式一,故在此不再赘述。
方式三:根据预定时间内或预定业务周期内预期发送的定位服务信息量确定。例如:当一定时间或周期内某种定位服务类型所需发送的定位服务信息的信息量超过第一门限值时,基站通过广播方式承载定位服务信息;当一定时间或周期内某种定位服务类型所需发送的定位服务信息的信息量超过低于第一门限值的第二门限值时,基站采用组播方式承载定位服务信息;当一定时间或周期内某种定位服务类型所需发送的定位服务信息的信息量低于第二门限值时,基站通过单播方式承载定位服务信息。这里,关于第一门限值和第二门限值,本领域技术人员可以根据需要来设定,只要满足广播方式、组播方式和单播方式等不同发送方式的基本需求即可。
方式四:基站还可根据预定时间内或预定业务周期内需要提供定位服务的终端数量、定位信息量,以确定采用不同发送方式所对应的数据总量,选 择数据总量开销最小的承载方式作为向终端提供相应的定位服务信息的承载方式。也就是说,基站可通过发起某种定位服务类型的定位服务请求的终端数量,以及相应的定位服务信息发送周期确定一定时间或周期内采用不同承载方式所需传输的定位服务信息对应的数据总量,选择数据总量开销最小的承载方式对定位服务信息进行承载。
方式五:根据定位服务请求中携带的时延参数确定向终端提供相应的定位服务信息的承载方式。具体地,当终端对定位服务建立时延要求较低(s级),且定位服务终端较多时,基站采用广播或组播方式发送。例如,新定义广播信息SIB_X,其发送周期为s级;或者将部分子帧配置为MBSFN子帧,进行组播。当终端对定位服务建立时延要求较高(ms级),基站可以采用单播方式发送。当终端对定位服务建立时延要求较低(s级),且需求定位服务的终端较少时,基站采用单播方式发送。
综上,通过利用现有的移动蜂窝基站提供相应的定位服务,无需建造大量的定位基准站,可降低建设和维护成本。此外,终端直接与基站交互,基站直接为终端提供相应的定位服务信息,大大降低了传输时延,在一定程度上提高了终端的定位精度。
第二实施例
以上第一实施例对本公开文本的提供定位服务的方法作了简单介绍,下面将结合图2对其进行进一步介绍,具体包括步骤S201和步骤S202。
在步骤S201中,接收终端根据提供定位服务能力指示信息上报的定位服务请求。
其中,该定位服务请求中携带有终端所需求的定位精度、时延参数和定位服务信息发送周期参数。具体的,定位服务信息的发送时刻由基站根据定位服务请求中携带的时延参数确定,定位服务信息的发送周期由基站根据定位服务请求中携带的定位服务信息发送周期参数确定。
在步骤S202中,根据定位服务请求中携带的定位精度参数,向终端提供与定位精度参数相匹配的定位服务信息。
终端发送的定位精度参数中有信息位用户表征终端所需要的精度要求或精度等级。例如:精度等级从高至低分为1-9级,用3比特(bit)信息表征。 当基站可提供的精度等级为2,定位精度参数中的3bit信息位表征的精度等级为3,表明该基站可满足该终端的精度需求,可为其提供相应的定位服务信息。此外,亦可将时延等级从高至低分为1-9级,也用3bit信息表征,终端发送的时延参数中有信息位用户表征终端所需要的时延要求或时延等级。
第三实施例
与第二实施例不同,该第三实施例中具体包括以下步骤S301至S302,如图3所示。
在步骤S301中,接收终端根据提供定位服务能力指示信息上报的定位服务请求。
在其中一个可行的实施例中,所述定位服务请求中包括终端所需求的定位服务类型和定位功能类型。具体地,定位服务类型包括:GPS卫星定位服务、北斗卫星定位服务、GLONASS(格洛纳斯)卫星定位服务、基站辅助定位服务、增强型小区标识定位、到达时间差定位法、基站位置信息等。定位功能类型包括:广域差分定位功能、单站差分定位功能、基站基本位置信息功能、基站辅助卫星定位功能等。
在步骤S302中,根据定位服务请求中携带的定位服务类型和定位功能类型,向终端提供与定位服务类型和定位功能类型相匹配的定位服务信息。
这里所说的是基站依据终端所需求的定位服务类型和定位功能类型,选择与其匹配的定位服务信息。例如:当终端的定位服务类型为GPS卫星定位,定位功能类型为辅助搜星服务,则基站或定位服务器可为终端提供终端位置上可搜索到的GPS卫星的定位信息,如卫星号、卫星仰角、卫星方位角、卫星钟差参数、星历参数等信息的一种或多种。当终端的定位服务类型为北斗卫星定位,定位功能类型为广域差分定位服务,则基站或定位服务器可为终端提供终端位置上可搜索到的北斗卫星的定位信息,如卫星号、卫星仰角、卫星方位角、卫星钟差参数、星历参数等,以及广域差分所需的差分信息卫星标识、差分距离误差指数、区域用户距离误差指数、等效钟差改正数的一种或多种。当终端的定位服务类型为北斗卫星定位,定位功能类型为单站差分定位时,则基站或定位服务器将本地纠正过的位置误差或距离误差参数发送给终端进行差分定位增强。
值得指出的是,第二实施例和第三实施例分别介绍了两种为终端提供定位服务信息的实现方式,其中上述两种方式可结合实施。例如,基站综合终端所需求的定位服务类型、定位功能类型以及定位精度、时延参数和定位服务信息发送周期参数,为终端选择对应的定位服务信息。
例如,当终端发送的定位服务请求中的信息为:“定位服务类型”为“北斗差分定位”,“精度等级”为“1”,“时延等级”为“2”;基站可提供的定位服务能力为:可支持的“定位服务类型”包括“北斗差分定位”、“GPS差分定位”,“精度等级”为支持北斗差分定位时,可提供精度等级为1的服务,“时延等级”为支持北斗差分定位时,可提供时延等级为1的服务。由上可知,基站可满足终端所需的定位服务需求,可为终端提供对应的定位服务信息。
第四实施例
此外,该提供定位服务的方法还适用于以下场景:
当基站无法满足定位服务请求时,向相邻基站或定位服务器转发定位服务请求。
当相邻基站或定位服务器能够满足定位服务请求时,将相邻基站或定位服务器向发起定位服务请求的终端提供的定位服务信息转发至终端。例如:当终端发送的定位服务请求中的信息为:“定位服务类型”为“北斗差分定位”,“精度等级”为“1”,“时延等级”为“2”;基站可提供的定位服务能力为:可支持的“定位服务类型”包括“北斗差分定位”和“GPS差分定位”,“精度等级”为支持北斗差分定位时,可提供精度等级为2的服务,“时延等级”为支持北斗差分定位时,可提供时延等级为2的服务。由上可知该基站无法满足用户终端所需的定位服务需求,这种情况下,基站可通过X2接口或数据专线等通信方式获取相邻基站或定位服务器提供定位服务类型及相应能力,为终端搭建虚拟承载,成为终端定位服务的中继节点。例如,当基站获知某相邻基站可提供的定位服务能力如下:可支持的“定位服务类型”包括“北斗差分定位”、“GPS差分定位”,“精度等级”为支持北斗差分定位时,可提供精度等级为1的服务,“时延等级”为支持北斗差分定位时,可提供时延等级为1的服务,由上可知该相邻基站能够满足终端的定位服务需求。这 时,基站通过相邻基站的定位服务的“时延等级”以及与该相邻基站的信令交互的往返时延,判断该相邻基站是否可以满足终端的定位服务“时延等级”要求。例如,当经判断可以满足服务要求时,向相邻基站建立定位服务承载,由相邻基站实际提供定位服务消息,并通过基站间接口传递至本基站,再由本基站下发给终端。
第五实施例
以上第一实施例至第四实施例分别从基站侧对本公开文本的提供定位服务的方法进行说明。下面将结合附图,从终端侧对本公开文本的提供定位服务的方法进行进一步地说明。
如图4所示,该提供定位服务的方法具体包括步骤S401。
在步骤S401中,接收服务小区的基站下发的提供定位服务能力指示信息。
在其中一个可行的实施例中,提供定位服务能力指示信息包括:基站是否支持定位服务的指示信息(是否支持定位服务能力信息)、基站支持的定位服务类型信息(支持的定位服务类型,如GPS、Beidou、Glonass等)、基站支持的定位功能类型信息(如提供基站基本位置信息、提供广域差分改正信息、提供单站或区域差分改正信息)、基站支持的定位服务的精度信息和/或时延保障信息(精度等级、时延等级)中的一种或多种。
例如,该方法还可以包括步骤S402和S403。
在步骤S402中,根据提供定位服务能力指示信息,向基站上报定位服务请求。
这里是指,当向终端发送的提供定位服务能力指示信息表明该基站支持定位服务能力时,终端才向基站发送定位服务请求,或者当向终端发送的提供定位服务能力指示信息表明该基站所支持的定位服务类型包括终端所支持的定位服务类型时,终端才向基站发送定位服务请求,以节省不必要的信令开销。其中,终端向当前所处的服务小区所属基站上报一定位服务请求,其中,该定位服务请求可由专用信令或应用层信令承载。即,终端可通过应用层消息向基站发送定位服务请求。
在步骤S403中,接收基站根据定位服务请求提供的相应的定位服务信 息。
当基站能够提供定位服务,且提供的定位服务能力满足终端的定位服务请求时,或者,当基站的相邻基站或定位服务器能够提供定位服务,且能够满足终端的定位服务请求时,终端接收基站提供相应的定位服务信息。
当基站及相邻基站或定位服务器不能够提供定位服务,或提供的定位服务能力不能够满足终端的定位服务请求时,终端接收基站拒绝定位服务请求时发送的定位服务拒绝响应。
在其中一个可行的实施例中,定位服务信息的承载方式由基站根据预定时间内或预定业务周期内发起定位服务请求的终端的数量确定,以最小化系统定位服务所需的相关信令开销。具体地,可针对不同的定位服务类型的定位服务确定不同的承载方式,也就是说,基站根据一定时间或周期内发起的具有同一定位服务类型的定位服务请求的终端数量,确定该定位服务信息的承载方式。例如:当一定时间或周期内,发起某种定位服务类型的定位服务请求的终端数量超过第一门限值时,基站通过广播方式承载定位服务信息;当发起某种定位服务类型的定位服务请求的终端数量超过低于第一门限值的第二门限值时基站采用组播方式承载定位服务信息;当发起某种定位服务类型的定位服务请求的终端数量低于第二门限值时,则基站通过单播方式承载定位服务信息。这里,关于第一门限值和第二门限值,本领域技术人员可以根据需要来设定,只要满足广播方式、组播方式和单播方式等不同发送方式的基本需求即可。
在其中一个可行的实施例中,向基站上报定位服务请求,包括:
根据终端自身所支持的定位服务类型、定位功能类型、以及应用程序或业务的定位服务需求中的至少一项,向服务小区的基站上报定位服务请求。终端根据获取到的提供定位服务能力指示信息结合终端自身支持的定位服务类型、定位功能类型以及终端应用程序或业务的定位服务需求中的一种或多种,当基站发送的向基站发送的提供定位服务能力指示信息表明该基站能够满足终端的定位服务需求时,终端向基站发送一定位服务请求。
综上,本公开文本的实施例通过利用现有的移动蜂窝基站提供相应的定位服务,无需建造大量的定位基准站,可降低建设和维护成本。此外,终端 直接与基站交互,基站直接为终端提供相应的定位服务信息,大大降低了传输时延,在一定程度上提高了终端的定位精度。
第六实施例
依据本公开文本的再一个方面,还提供了一种基站。如图5所示,该基站包括第一发送模块51。
该第一发送模块51用于向终端发送提供定位服务能力指示信息。其中,提供定位服务能力指示信息包括:基站是否支持定位服务的指示信息、基站支持的定位服务类型信息、基站支持的定位功能类型信息、基站支持的定位服务的精度信息和/或时延保障信息中的一种或多种。
在其中一个可行的实施例中,第一发送模块51还可以包括:
第一发送单元,用于通过基站的广播消息向终端发送提供定位服务能力指示信息;或者,
第二发送单元,用于通过基站的控制信令的公共搜索区域向终端发送提供定位服务能力指示信息;或者,
第三发送单元,用于通过基站的无线资源控制信息向终端发送提供定位服务能力指示信息;或者,
第四发送单元,用于通过基站的应用层消息向终端发送提供定位服务能力指示信息。
在其中一个可行的实施例中,该基站还包括:
第一接收模块,用于接收终端根据提供定位服务能力指示信息上报的定位服务请求;以及
处理模块,用于根据定位服务请求,向终端提供相应的定位服务信息。
在其中一个可行的实施例中,处理模块包括:
第一处理单元,用于通过广播方式向终端提供相应的定位服务信息;或者,
第二处理单元,用于通过组播方式向终端提供相应的定位服务信息;或者,
第三处理单元,用于通过单播方式向终端提供相应的定位服务信息。
在其中一个可行的实施例中,该基站还包括:
第一承载模块,用于根据预定时间内或预定业务周期内发起定位服务请求的终端的数量,确定向终端提供相应的定位服务信息的承载方式;或者,
第二承载模块,用于根据预定时间内或预定业务周期内需要提供定位服务的终端的数量,确定向终端提供相应的定位服务信息的承载方式;或者,
第三承载模块,用于根据预定时间内或预定业务周期内预期发送的定位服务信息量,确定向终端提供相应的定位服务信息的承载方式;或者,
第四承载模块,用于根据预定时间内或预定业务周期内需要提供定位服务的终端数量、定位信息量,以确定采用不同发送方式所对应的数据总量,选择数据总量开销最小的承载方式作为向终端提供相应的定位服务信息的承载方式;或者,
第五承载模块,用于根据定位服务请求中携带的时延参数确定向终端提供相应的定位服务信息的承载方式。
在其中一个可行的实施例中,该基站还包括:
第一确定模块,用于根据定位服务请求中携带的时延参数确定定位服务信息的发送时刻;和/或
第二确定模块,用于根据定位服务请求中携带的定位服务信息发送周期参数确定定位服务信息的发送周期。
在其中一个可行的实施例中,处理模块还包括:
第四处理单元,用于根据定位服务请求中携带的定位精度参数,向终端提供与定位精度参数相匹配的定位服务信息;或者,
第五处理单元,用于根据定位服务请求中携带的定位服务类型和定位功能类型,向终端提供与定位服务类型和定位功能类型相匹配的定位服务信息。
在其中一个可行的实施例中,该基站还包括:
第一转发模块,用于当基站无法满足定位服务请求时,向相邻基站或定位服务器转发定位服务请求;以及
第二转发模块,用于当相邻基站或定位服务器能够满足定位服务请求时,将相邻基站或定位服务器向发起定位服务请求的终端提供的定位服务信息转发至终端。
需要说明的是,该基站与上述第一实施例至第四实施例中介绍的提供定 位服务的方法相对应,上述方法实施例中所有实现方式均适用于该基站的实施例中,也能达到相同的技术效果。
第七实施例
依据本公开文本的再一个方面,还提供了一种终端。如图6所示,该终端包括第二接收模块61。
该第二接收模块61,用于接收服务小区的基站下发的提供定位服务能力指示信息。其中,提供定位服务能力指示信息包括:基站是否支持定位服务的指示信息、基站支持的定位服务类型信息、基站支持的定位功能类型信息、基站支持的定位服务的精度信息和/或时延保障信息中的一种或多种。
在其中一个可行的实施例中,该终端还包括:
第二发送模块,用于根据提供定位服务能力指示信息,向基站上报定位服务请求;以及
第三接收模块,用于接收基站根据定位服务请求提供的相应的定位服务信息。
在其中一个可行的实施例中,第二发送模块包括:
第五发送单元,用于根据终端自身所支持的定位服务类型、定位功能类型、以及应用程序或业务的定位服务需求中的至少一项,向服务小区的基站上报定位服务请求。
需要说明的是,该终端与上述第五实施例中介绍的提供定位服务的方法相对应,上述方法实施例中所有实现方式均适用于该终端的实施例中,也能达到相同的技术效果。
以上所述的是本公开文本的优选实施方式,应当指出对于本技术领域的普通人员来说,在不脱离本公开文本所述的原理前提下还可以作出若干改进和润饰,这些改进和润饰也在本公开文本的保护范围内。

Claims (22)

  1. 一种提供定位服务的方法,应用于基站,所述方法包括:
    向终端发送提供定位服务能力指示信息;其中,所述提供定位服务能力指示信息包括:所述基站是否支持定位服务的指示信息、所述基站支持的定位服务类型信息、所述基站支持的定位功能类型信息、所述基站支持的定位服务的精度信息和/或时延保障信息中的一种或多种。
  2. 根据权利要求1所述的提供定位服务的方法,其中,向终端发送提供定位服务能力指示信息,包括:
    通过所述基站的广播消息向所述终端发送提供定位服务能力指示信息;或者,
    通过所述基站的控制信令的公共搜索区域向所述终端发送提供定位服务能力指示信息;或者,
    通过所述基站的无线资源控制信息向所述终端发送提供定位服务能力指示信息;或者,
    通过所述基站的应用层消息向所述终端发送提供定位服务能力指示信息。
  3. 根据权利要求1所述的提供定位服务的方法,还包括:
    接收所述终端根据所述提供定位服务能力指示信息上报的定位服务请求;以及
    根据所述定位服务请求,向所述终端提供相应的定位服务信息。
  4. 根据权利要求3所述的提供定位服务的方法,其中,向所述终端提供相应的定位服务信息,包括:
    通过广播方式向所述终端提供相应的定位服务信息;或者,
    通过组播方式向所述终端提供相应的定位服务信息;或者,
    通过单播方式向所述终端提供相应的定位服务信息。
  5. 根据权利要求4所述的提供定位服务的方法,其中,
    根据预定时间内或预定业务周期内发起所述定位服务请求的终端的数量,确定向所述终端提供相应的定位服务信息的承载方式;或者,
    根据预定时间内或预定业务周期内需要提供定位服务的终端的数量,确定向所述终端提供相应的定位服务信息的承载方式;或者,
    根据预定时间内或预定业务周期内预期发送的定位服务信息量,确定向所述终端提供相应的定位服务信息的承载方式;或者,
    根据预定时间内或预定业务周期内需要提供定位服务的终端数量、定位信息量,以确定采用不同发送方式所对应的数据总量,选择数据总量开销最小的承载方式作为向所述终端提供相应的定位服务信息的承载方式;或者,
    根据所述定位服务请求中携带的时延参数确定向所述终端提供相应的定位服务信息的承载方式。
  6. 根据权利要求3所述的提供定位服务的方法,其中,
    所述定位服务信息的发送时刻由所述基站根据所述定位服务请求中携带的时延参数确定;和/或
    所述定位服务信息的发送周期由所述基站根据所述定位服务请求中携带的定位服务信息发送周期参数确定。
  7. 根据权利要求3所述的提供定位服务的方法,其中,根据所述定位服务请求,向所述终端提供相应的定位服务信息,包括:
    根据所述定位服务请求中携带的定位精度参数,向所述终端提供与所述定位精度参数相匹配的定位服务信息;或者,
    根据所述定位服务请求中携带的定位服务类型和定位功能类型,向所述终端提供与所述定位服务类型和定位功能类型相匹配的定位服务信息。
  8. 根据权利要求3所述的提供定位服务的方法,还包括:
    当所述基站无法满足所述定位服务请求时,向相邻基站或定位服务器转发所述定位服务请求;以及
    当所述相邻基站或定位服务器能够满足所述定位服务请求时,将所述相邻基站或定位服务器向发起所述定位服务请求的终端提供的定位服务信息转发至所述终端。
  9. 一种提供定位服务的方法,应用于终端,所述方法包括:
    接收服务小区的基站下发的提供定位服务能力指示信息;其中,所述提供定位服务能力指示信息包括:所述基站是否支持定位服务的指示信息、所 述基站支持的定位服务类型信息、所述基站支持的定位功能类型信息、所述基站支持的定位服务的精度信息和/或时延保障信息中的一种或多种。
  10. 根据权利要求9所述的提供定位服务的方法,还包括:
    根据所述提供定位服务能力指示信息,向所述基站上报定位服务请求;以及
    接收所述基站根据所述定位服务请求提供的相应的定位服务信息。
  11. 根据权利要求10所述的提供定位服务的方法,其中,向所述基站上报定位服务请求,包括:
    根据所述终端自身所支持的定位服务类型、定位功能类型、以及应用程序或业务的定位服务需求中的至少一项,向服务小区的基站上报定位服务请求。
  12. 一种基站,包括:
    第一发送模块,用于向终端发送提供定位服务能力指示信息;其中,所述提供定位服务能力指示信息包括:所述基站是否支持定位服务的指示信息、所述基站支持的定位服务类型信息、所述基站支持的定位功能类型信息、所述基站支持的定位服务的精度信息和/或时延保障信息中的一种或多种。
  13. 根据权利要求12所述的基站,其中,所述第一发送模块包括:
    第一发送单元,用于通过所述基站的广播消息向所述终端发送提供定位服务能力指示信息;或者,
    第二发送单元,用于通过所述基站的控制信令的公共搜索区域向所述终端发送提供定位服务能力指示信息;或者,
    第三发送单元,用于通过所述基站的无线资源控制信息向所述终端发送提供定位服务能力指示信息;或者,
    第四发送单元,用于通过所述基站的应用层消息向所述终端发送提供定位服务能力指示信息。
  14. 根据权利要求12所述的基站,还包括:
    第一接收模块,用于接收所述终端根据所述提供定位服务能力指示信息上报的定位服务请求;以及
    处理模块,用于根据所述定位服务请求,向所述终端提供相应的定位服 务信息。
  15. 根据权利要求14所述的基站,其中,所述处理模块包括:
    第一处理单元,用于通过广播方式向所述终端提供相应的定位服务信息;或者,
    第二处理单元,用于通过组播方式向所述终端提供相应的定位服务信息;或者,
    第三处理单元,用于通过单播方式向所述终端提供相应的定位服务信息。
  16. 根据权利要求15所述的基站,还包括:
    第一承载模块,用于根据预定时间内或预定业务周期内发起所述定位服务请求的终端的数量,确定向所述终端提供相应的定位服务信息的承载方式;或者,
    第二承载模块,用于根据预定时间内或预定业务周期内需要提供定位服务的终端的数量,确定向所述终端提供相应的定位服务信息的承载方式;或者,
    第三承载模块,用于根据预定时间内或预定业务周期内预期发送的定位服务信息量,确定向所述终端提供相应的定位服务信息的承载方式;或者,
    第四承载模块,用于根据预定时间内或预定业务周期内需要提供定位服务的终端数量、定位信息量,以确定采用不同发送方式所对应的数据总量,选择数据总量开销最小的承载方式作为向所述终端提供相应的定位服务信息的承载方式;或者,
    第五承载模块,用于根据所述定位服务请求中携带的时延参数确定向所述终端提供相应的定位服务信息的承载方式。
  17. 根据权利要求14所述的基站,还包括:
    第一确定模块,用于根据定位服务请求中携带的时延参数确定定位服务信息的发送时刻;和/或
    第二确定模块,用于根据定位服务请求中携带的定位服务信息发送周期参数确定定位服务信息的发送周期。
  18. 根据权利要求14所述的基站,所述处理模块还包括:
    第四处理单元,用于根据所述定位服务请求中携带的定位精度参数,向 所述终端提供与所述定位精度参数相匹配的定位服务信息;或者,
    第五处理单元,用于根据所述定位服务请求中携带的定位服务类型和定位功能类型,向所述终端提供与所述定位服务类型和定位功能类型相匹配的定位服务信息。
  19. 根据权利要求14所述的基站,还包括:
    第一转发模块,用于当所述基站无法满足所述定位服务请求时,向相邻基站或定位服务器转发所述定位服务请求;以及
    第二转发模块,用于当所述相邻基站或定位服务器能够满足所述定位服务请求时,将所述相邻基站或定位服务器向发起所述定位服务请求的终端提供的定位服务信息转发至所述终端。
  20. 一种终端,包括:
    第二接收模块,用于接收服务小区的基站下发的提供定位服务能力指示信息;其中,所述提供定位服务能力指示信息包括:所述基站是否支持定位服务的指示信息、所述基站支持的定位服务类型信息、所述基站支持的定位功能类型信息、所述基站支持的定位服务的精度信息和/或时延保障信息中的一种或多种。
  21. 根据权利要求20所述的终端,还包括:
    第二发送模块,用于根据所述提供定位服务能力指示信息,向所述基站上报定位服务请求;以及
    第三接收模块,用于接收所述基站根据所述定位服务请求提供的相应的定位服务信息。
  22. 根据权利要求21所述的终端,其中,所述第二发送模块包括:
    第五发送单元,用于根据所述终端自身所支持的定位服务类型、定位功能类型、以及应用程序或业务的定位服务需求中的至少一项,向服务小区的基站上报定位服务请求。
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