CN101888587B - Method and system for realizing location in LTE (Long Term Evolution) system - Google Patents

Method and system for realizing location in LTE (Long Term Evolution) system Download PDF

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Publication number
CN101888587B
CN101888587B CN200910084451.7A CN200910084451A CN101888587B CN 101888587 B CN101888587 B CN 101888587B CN 200910084451 A CN200910084451 A CN 200910084451A CN 101888587 B CN101888587 B CN 101888587B
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CN
China
Prior art keywords
assistance data
positioning assistance
gps
class
system information
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Expired - Fee Related
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CN200910084451.7A
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Chinese (zh)
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CN101888587A (en
Inventor
黄波
吴昊
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Shenzhen Fu Hai Sunshine Technology Co., Ltd.
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ZTE Corp
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Priority to CN200910084451.7A priority Critical patent/CN101888587B/en
Priority to PCT/CN2009/075613 priority patent/WO2010130134A1/en
Publication of CN101888587A publication Critical patent/CN101888587A/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • 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
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information

Abstract

The invention provides method and system for realizing location in a long term evolution (LTE) system. In the invention, UE (User Equipment) acquires auxiliary location data according to a location service (LCS) system information block broadcasted at a network side and finishes location according to the latest auxiliary location data. The method provides the realization scheme of the LCS in the LTE system and guarantees the practical application of the LCS in the LTE system. Meanwhile, the LCS system information block is issued in a broadcast mode, thereby the system load is lightened.

Description

In LTE system, realize the method and system of location
Technical field
The present invention relates to location technology, in espespecially a kind of Long Term Evolution (LTE, Long Term Evolution) system, realize the method and system of location.
Background technology
At present mobile communication technology is faced with provides higher data rate, provides the problem of better covering and larger capacity for network for user.In order to address the above problem, third generation partner program (3GPP, 3rd Generation Partnership Project) start wireless access network LTE project, the access technology (E-UTRA) of evolution, the access network (E-UTRAN) of evolution, and towards packet domain core network evolution (SAE) project of all-IP, wish by evolve and enhancing from wave point to core network, for operator and the ever-increasing demand of user provide better support.
LTE is a kind of with orthogonal frequency division multiplexi (OFDM, Orthogonal Frequency DivisionMultiplexing)/single carrier frequency division multiplex technique (SC-FDMA, Single Carrier-FrequencyDivision Multiple Access) is the technology of core.The main performance target of 3GPP LTE project comprises: the peak rate that descending 100Mbps, up 50Mbps can be provided in 20MHz spectral bandwidth; Improve the performance of Cell Edge User; Improve cell capacity; Reduce system delay, the inner unidirectional transmission time delay of user plane is lower than 5ms, and control plane is from sleep state to state of activation transit time lower than 50ms, and the transit time from resident state to state of activation is less than 100ms; Support the community of 100Km radius to cover; The access service of > 100kbps can be provided for 350Km/h high-speed mobile user; Support paired or non-paired frequency spectrum, and can flexible configuration 1.25 MHz to 20MHz various bandwidth.
Positioning service (LCS, LoCation Services) is a kind of novel value-added service that mobile radio communication provides.The positional information that LCS obtains travelling carriage by wireless location technology, as longitude and latitude, translational speed etc., offers mobile subscriber, mobile communication network or other external entity, to realize the various business relevant to position.Use LCS, mobile subscriber can be known own current residing position easily, and the information in inquiry or near the various places of search; Can also position specific user or tissue, carry out Real-Time Monitoring, tracking according to user's position, in conjunction with electronic chart, realize monitoring and scheduling.
But, in LTE system, there is no at present the implementation of LCS, thereby brought inconvenience to the practical application of LCS business in LTE system.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that realizes location in LTE system, and the implementation of the LCS in LTE system can be provided, and ensures the practical application of LCS business in LTE system.
Another object of the present invention is to provide the system that realizes location in a kind of LTE system, the implementation of the LCS in LTE system can be provided, ensure the practical application of LCS business in LTE system.
For achieving the above object, technical scheme of the present invention is achieved in that
A method that realizes location in Long Term Evolution LTE system, the method comprises:
User terminal UE obtains positioning assistance data according to the LCS system information block of network side broadcast, and utilizes the positioning assistance data obtaining to position.
Described LCS system information block is the system information block 12SIB12 increasing in system information SI message.
Described UE obtains positioning assistance data according to the LCS system information block of network side broadcast and specifically comprises:
When described UE receives broadcast, in DSCH Downlink Shared Channel, read SIB1, obtain the schedule information of LCS system information block by SIB1;
UE reads SIB12 according to the schedule information obtaining, and obtains positioning assistance data from SIB12.
In described SIB12, carry corresponding different locate modes, for representing the value label of the positioning assistance data that whether has renewal,
And positioning assistance data based on observable time of advent of poor OTDOA, and/or based on the general positioning assistance data of global position system GPS class, and/or positioning assistance data based on GPS class.
Described value label comprises:
For representing the value label whether OTDOA class positioning assistance data changes;
And/or value label for representing whether the general positioning assistance data of GPS class changes;
And/or value label for representing whether GPS class positioning assistance data changes.
The described positioning assistance data based on differing from OTDOA the observable time of advent comprises:
OTDOA enciphered message, and/or the auxiliary data of the auxiliary OTDOA of UE location, and/or the auxiliary data of OTDOA location based on UE.
Describedly comprise based on the general positioning assistance data of global position system GPS class: gps data enciphered message, reference position, GPS reference time, abnormal satellite ID.
The described positioning assistance data based on GPS class comprises: satellite ID, and,
Differential GPS information, and/or the time in week of satellite, and/or GPS ephemeris and time correction factor, and/or GPS navigation parameter.
The described positioning assistance data that obtains from SIB12 comprises:
If described UE does not preserve the value label for representing whether OTDOA class positioning assistance data changes, or that from SIB12, reads is different for representing the value that value label and UE that whether OTDOA class positioning assistance data changes self preserved, UE preserves the value label that represents whether OTDOA class positioning assistance data changes, and UE reads the auxiliary data of OTDOA enciphered message, the auxiliary OTDOA of UE location as positioning assistance data; If UE supports the location based on UE, UE further reads the auxiliary data of the OTDOA location based on UE as positioning assistance data;
If described UE does not preserve the value label for representing whether the general positioning assistance data of GPS class changes, or that from SIB12, reads is different for representing the value that value label and UE self that whether the general positioning assistance data of GPS class change preserve, UE preserves for representing that the value the label whether general positioning assistance data of GPS class changes, UE read gps data enciphered message, reference position, GPS reference time, abnormal satellite ID as positioning assistance data;
If described UE does not preserve value label and satellite ID for representing whether GPS class positioning assistance data changes, or that from SIB12, reads is different with the two value that satellite ID exists at least one and UE self to preserve for representing the value label whether GPS class positioning assistance data change, UE preserves for representing that value label and the satellite ID whether GPS class positioning assistance data changes, UE read time in week, GPS ephemeris and the time correction factor of differential GPS information, satellite and GPS navigation parameter information as positioning assistance data.
A system that realizes location in Long Term Evolution LTE system, this system comprises network side and user's side, wherein,
Network side, for LCS system information block is set, and broadcasts LCS system information block;
User's side, for receiving broadcast, obtains positioning assistance data according to the LCS system information block of broadcast, utilizes the positioning assistance data obtaining to position.
The technical scheme providing from the invention described above can find out, user terminal (UE) obtains positioning assistance data according to the LCS system information block of network side broadcast, and completes location according to up-to-date positioning assistance data.The inventive method provides the implementation of the LCS in LTE system, has ensured the practical application of LCS business in LTE system., LCS system information block is issued by the mode of broadcast meanwhile, alleviated system loading.
Brief description of the drawings
Fig. 1 is the flow chart of realizing the method for location in LTE system of the present invention;
Fig. 2 is the flow chart that the present invention obtains the embodiment of positioning assistance data;
Fig. 3 is the composition structural representation of realizing the system of location in LTE system of the present invention.
Embodiment
Fig. 1 is the flow chart of realizing the method for location in LTE system of the present invention, as shown in Figure 1, comprising:
Step 100:UE obtains positioning assistance data according to the LCS system information block of network side broadcast.
In system information (SI, the SystemInformation) message of network side, increase system information block 12 (SIB12, SystemInformationBlockType12) as LCS system information block, for carrying positioning assistance data.The schedule information of SIB12 is carried by the schedule information unit of SIB1, and the schedule information of SIB12 is used to indicate SIB12 and when transmits, such as time started etc.
Table one is the message format of the present invention newly-increased SIB12 in SI message.
SIB type Optional/essential Explanation
sib12 Essential SystemInformationBlockType12
Table one
The positioning assistance data carrying in SIB12 as shown in Table 2.
information element title optional/essential explanation
valuetagofOTDOA essential represent the value label whether OTDOA class positioning assistance data changes, only effective in the resident community of UE.
oTDOA ciphering info optional oTDOA enciphered message, for the OTDOA decrypt messages based on UE.
uE-assisted OTDOA assistance data optional the auxiliary data of the auxiliary OTDOA of UE location, as ID, the delivery lag etc. of adjacent cell.
uE-based OTDOA assistance data optional the auxiliary data of the OTDOA location based on UE, as the relevant information of base station etc.
valuetagofCommonGPS essential represent the value the label whether general positioning assistance data of GPS class changes.
common GPS data optional the general positioning assistance data of GPS class, as: GPS data encryption information, reference position, GPS reference time, abnormal satellite ID etc.
valuetagofGPS essential the value label whether GPS class positioning assistance data changes, ID is combined with satellite, judges whether LCS changes.
satID essential satellite ID.
dGPS optional differential GPS (DGPS) information.
transmission TOW optional the time in week of satellite.
gPS Ephemeris and Clock Correction Parameters optional gPS ephemeris and time correction factor.
gPS navigation Parameters optional gPS navigation parameter, as: Ionospheric Parameters, perpetual calendar and satellite health index, world concordant time UTC, satellite Mask, TOW minimum
significance bit etc.
Table two
As shown in Table 2, in SIB12, carry based on the observable time of advent of poor (OTDOA, ObservedTime Difference Of Arrival) and the positioning assistance data of global positioning system (GPS, Global PositioningSystems) locate mode.If also have other locate modes, only need in SIB12, increase relevant information element; If only have a kind of locate mode, that need arrange relevant information element that should locate mode in SIB12.
In SIB12, utilize for representing that the value label ValueTag of the positioning assistance data that whether has renewal is valuetagofOTDOA, ValuetagofCommonGPS and ValuetagofGPS, be convenient to UE and identify the renewal that whether has positioning assistance data.
Fig. 2 is the flow chart that the present invention obtains the embodiment of positioning assistance data, as shown in Figure 2,
When the UE that possesses LCS ability receives broadcast, UE reads SIB1 in DSCH Downlink Shared Channel, by the schedule information unit in SIB1, obtains LCS system information block and when transmits the schedule information as the time started, UE reads SIB12 according to this schedule information, thereby obtains positioning assistance data.
The specific implementation of obtaining positioning assistance data comprises:
The UE that possesses LCS ability receives after broadcast, according to the schedule information piece in SIB1, reads LCS system information block SIB12:
If UE does not preserve valuetagofOTDOA, or the value that the valuetagofOTDOA reading from SIB12 and UE self preserve is different, show that the system information that OTDOA is relevant upgrades, now, UE preserves valuetagofOTDOA, and reads OTDOA ciphering info, UE-assisted OTDOA assistance data information as positioning assistance data; If UE supports the location based on UE, now also need to read UE-based OTDO A assistance data information as positioning assistance data;
If UE does not preserve ValuetagofCommonGPS, or the value that the ValuetagofCommonGPS reading from SIB12 and UE self preserves is different, show that GPS general system information upgrades, now, UE preserves ValuetagofCommonGPS, and UE reads Common GPS data as: gps data enciphered message, reference position, GPS reference time, abnormal satellite ID etc., as positioning assistance data.
If UE does not preserve ValuetagofGPS and SatID, or the ValuetagofGPS reading from SIB12 is different with the two value that exists one or two and UE self to preserve in SatID, show that GPS supplementary upgrades, UE preserves ValuetagofGPS and SatID, and need to read DGPS, Transmission TOW, GPS Ephemeris and Clock Correction Parameters and GPSnavigation Parameters information as positioning assistance data.
Read after SIB12 if possess the UE of LCS ability, valuetagofOTDOA,
ValuetagofCommonGPS, ValuetagofGPS are identical with the analog value that UE self preserves with SatID value, show that auxiliary positioning data does not upgrade, and UE no longer further reads SIB12 message content.
It should be noted that, if UE does not possess LCS ability, ignore the SIB12 in broadcast.
In this step, LCS system information block is issued by the mode of broadcast, alleviated system loading.
Step 101: utilize the positioning assistance data obtaining to position.
Utilize the positioning assistance data obtaining to locate to determine customer location.Localization method in this step can adopt existing one or more localization method, and localization method does not limit the application of the inventive method here.Determine that customer location mainly comprises wireless signal measurement and calculates based on the location estimation of measuring.
Wherein, signal measurement can carry out in user terminal, base station and Location Measurement Unit, and location estimation is calculated and can in user terminal or wireless access network, be carried out.In above-mentioned localization process process, according to the difference of localization method, need some supplementarys to assist position fixing process, as: ephemeris figure when satellite fix, revise data, enciphered message etc.For these supplementarys, consider to be handed down to UE by system message with the form of Cell Broadcast CB.Based on above-mentioned consideration, in LTE, increase LCS system message SIB12, for sending positioning assistance data.
For the inventive method, a kind of system is also provided, Fig. 3 is the composition structural representation of realizing the system of location in LTE system of the present invention, as shown in Figure 3, this system comprises network side and user's side, wherein,
Network side, for LCS system information block is set, and broadcasts LCS system information block.
User's side, for receiving broadcast, obtains positioning assistance data according to the LCS system information block of broadcast, utilizes the positioning assistance data obtaining to position.
User's side is to possess/do not possess the terminal of LCS ability.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention, all any amendments of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.

Claims (7)

1. a method that realizes location in Long Term Evolution LTE system, is characterized in that, the method comprises:
User terminal UE reads LCS system information block, from LCS system information block, obtain in the situation of positioning assistance data, described LCS system information block carry corresponding different locate modes, for representing the value label of the positioning assistance data that whether has renewal, the value that UE does not have save value label or the value label and UE self that read preserved is different, the value label reading described in preservation, and obtain positioning assistance data;
Utilize the positioning assistance data obtaining to position;
Wherein, in described LCS system information block, also carry the positioning assistance data based on observable time of advent of poor OTDOA, and/or based on the general positioning assistance data of global position system GPS class, and/or positioning assistance data based on GPS class; Described LCS system information block is the system information block 12SIB12 increasing in system information SI message.
2. method according to claim 1, is characterized in that, described value label comprises:
For representing the value label whether OTDOA class positioning assistance data changes;
And/or value label for representing whether the general positioning assistance data of GPS class changes;
And/or value label for representing whether GPS class positioning assistance data changes.
3. method according to claim 2, is characterized in that, the described positioning assistance data based on differing from OTDOA the observable time of advent comprises:
OTDOA enciphered message, and/or the auxiliary data of the auxiliary OTDOA of UE location, and/or the auxiliary data of OTDOA location based on UE.
4. method according to claim 2, is characterized in that, describedly comprises based on the general positioning assistance data of global position system GPS class: gps data enciphered message, reference position, GPS reference time, abnormal satellite ID.
5. method according to claim 2, is characterized in that, the described positioning assistance data based on GPS class comprises: satellite ID, and,
Differential GPS information, and/or the time in week of satellite, and/or GPS ephemeris and time correction factor, and/or GPS navigation parameter.
6. according to the method described in claim 3,4 or 5, it is characterized in that, the described positioning assistance data that obtains from SIB12 comprises:
If described UE does not preserve the value label for representing whether OTDOA class positioning assistance data changes, or that from SIB12, reads is different for representing the value that value label and UE that whether OTDOA class positioning assistance data changes self preserved, UE preserves the value label that represents whether OTDOA class positioning assistance data changes, and UE reads the auxiliary data of OTDOA enciphered message, the auxiliary OTDOA of UE location as positioning assistance data; If UE supports the location based on UE, UE further reads the auxiliary data of the OTDOA location based on UE as positioning assistance data;
If described UE does not preserve the value label for representing whether the general positioning assistance data of GPS class changes, or that from SIB12, reads is different for representing the value that value label and UE self that whether the general positioning assistance data of GPS class change preserve, UE preserves for representing that the value the label whether general positioning assistance data of GPS class changes, UE read gps data enciphered message, reference position, GPS reference time, abnormal satellite ID as positioning assistance data;
If described UE does not preserve value label and satellite ID for representing whether GPS class positioning assistance data changes, or that from SIB12, reads is different with the two value that satellite ID exists at least one and UE self to preserve for representing the value label whether GPS class positioning assistance data change, UE preserves for representing that value label and the satellite ID whether GPS class positioning assistance data changes, UE read time in week, GPS ephemeris and the time correction factor of differential GPS information, satellite and GPS navigation parameter information as positioning assistance data.
7. a system that realizes location in Long Term Evolution LTE system, is characterized in that, this system comprises network side and user's side, wherein,
Network side, for LCS system information block is set, and broadcasts LCS system information block;
User's side, be used for receiving broadcast, read LCS system information block, from LCS system information block, obtain in the situation of positioning assistance data, described LCS system information block carry corresponding different locate modes, for representing the value label of the positioning assistance data that whether has renewal, the value that UE does not have save value label or the value label and UE self that read preserved is different, the value label reading described in preservation, and obtain positioning assistance data, utilize the positioning assistance data obtaining to position;
Wherein, in described LCS system information block, also carry the positioning assistance data based on observable time of advent of poor OTDOA, and/or based on the general positioning assistance data of global position system GPS class, and/or positioning assistance data based on GPS class; Described LCS system information block is the system information block 12SIB12 increasing in system information SI message.
CN200910084451.7A 2009-05-14 2009-05-14 Method and system for realizing location in LTE (Long Term Evolution) system Expired - Fee Related CN101888587B (en)

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PCT/CN2009/075613 WO2010130134A1 (en) 2009-05-14 2009-12-16 Method and system for implementing positioning in a long time evolution (lte) system

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