CN100421526C - Method for user terminal to send up position information - Google Patents
Method for user terminal to send up position information Download PDFInfo
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- CN100421526C CN100421526C CNB2005101324719A CN200510132471A CN100421526C CN 100421526 C CN100421526 C CN 100421526C CN B2005101324719 A CNB2005101324719 A CN B2005101324719A CN 200510132471 A CN200510132471 A CN 200510132471A CN 100421526 C CN100421526 C CN 100421526C
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Abstract
The present invention provides a user terminal position information reporting method. The method mainly comprises that a user terminal works out a space physics rectilinear distance L between the user terminal and a resident base station of the user terminal according to the provided position information of GPS (a global positioning system) and the position information of a area of the user terminal; a space wireless propagation distance TA from the user terminal to the resident base station is determined according to the distance; the user terminal sends information with the position information of the user terminal to the base station on private channels according to the TA values. The method of the present invention can report the position information to network sides in a real-time manner when group calling users do not interrupt businesses.
Description
Technical field
The present invention relates to communication field, relate in particular to a kind of method of user terminal to send up position information.
Background technology
GSM (Globe System of Mobile Communication, Global Link mobile communcations system) and all there is higher requirement user location based on the GT800 on the GSM basis (800M frequency range) trunking communication.
In some particular application, all integrated GPS (Global Position System on Vehicle mounted station, mobile subscriber such as mobile phone dedicated, global positioning system) receiver module, mobile phone dedicatedly can obtain current position information by this GPS in real time at Vehicle mounted station.
The calling talk group is the mechanism of grassroots organization that carries out communication in the trunk radio system.In calling talk process, two or more have the air station of business relations to be assigned to the phone group of an appointment.When elected group switch was placed on this group position, the user need only simply click PTT can be to user's speech on the same group.Do not belong to this group subscriber board and can not receive speech.
In calling talk process, network side uses hearer's recognition technology that the group calling user is discerned, and the implementation of hearer's recognition technology is summarized as follows:
Each group calling user has sequence number in the group in group, the group calling user calculates the opportunity that reports according to sequence number in System Frame Number and the group, in belonging to this reporting of user time window, report the access pulse, network side is according to frame number and the access pulse of receiving, calculate the sequence number of report of user, the information on the throne of this report of user is notified to the system call platform.
Because what mobile phone location information comprised contains much information, one is inserted pulse and can only carry 8 BIT, can not realize that hearer's positional information reports at ACCESS BURST (access pulse), if adopt hearer's identification to report mode, customer position information must report in NORMAL BURST (formal burst).NORMAL BURST can carry the information of 20BYTE.
In calling talk process, mobile subscriber's positional information can not real-time report to network side, can only interrupting service, by GPRS (General Packet Radio Service, GPRS) connects the positional information report the mobile subscriber, return group-calling channel again after reporting end.
The shortcoming of the method for the above-mentioned positional information that reports the mobile subscriber by GPRS is: this method requires the mobile subscriber to break away from group calling, will cause the service disconnection of portable terminal, and speech is lost.The GPRS channel that this method is outer with occupying volume has caused the resource anxiety.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of method of user terminal to send up position information, thereby can realize that the group calling user under the situation of non-interrupting service, reports its positional information to network side in real time.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method of user terminal to send up position information comprises:
Its positional information that A, user terminal provide according to the positional information and the global position system GPS of its sub-district, place, calculate the space physics air line distance L between this user terminal and its resident base station, and according to this distance, determine the spacing wireless propagation distance TA of this user terminal to its resident base station, the positional information of described sub-district comprises the positional information of the base station of described sub-district;
B, described user terminal are reported in the window thereon, according to the value of described TA, send the message of the positional information of carrying this user terminal to described base station in dedicated channel.
Described steps A specifically comprises:
The user terminal of A1, support global position system GPS obtains the positional information of its sub-district, place;
The current location information of this user terminal that A2, described user terminal provide according to GPS and the positional information of sub-district, described place calculate the value of described L, and according to the value of L, determine the value of TA.
The positional information of described sub-district comprises the latitude and longitude information of the base station of described sub-district.
Described steps A 1 specifically comprises:
Described user terminal is downloaded the positional information of its sub-district, place by wireless or wired mode;
Perhaps,
When system was carried out dilatation, described user terminal obtained the positional information of its sub-district, place by the expanding system message that the base station sends;
Perhaps,
The notification message that described user terminal sends in notification channel NCH by the base station obtains the positional information of its sub-district, place;
Perhaps,
Described user terminal, uses Fast Associated Control Channel FACCH to steal the message that the frame mode sends and obtains the positional information of its sub-district, place in group-calling channel by the base station.
Described steps A 2 specifically comprises:
Described
Wherein, the position coordinates that the user terminal that X2, Y2 provide for GPS is current, X1, Y1 are the position coordinates of its resident base station of user terminal acquisition, and be described
Described step B specifically comprises:
B1, described user terminal calculate it and report window, and undertaken synchronously by current System Frame Number and described base station according to its sequence number and current System Frame Number in the calling talk group;
B2, described user terminal are reported in the window thereon, according to the value of described TA, send the message of the positional information of carrying this user terminal to described base station in dedicated channel.
The described message of carrying the positional information of this user terminal of described step B2 comprises formal burst NORMAL BURST message.
Described step B2 specifically comprises:
When described user terminal was in the speaker sub-district, described user terminal was reported in the window thereon, according to the value of described TA, sent the NORMAL BURST message of the positional information of carrying this user terminal to described base station in Separate Dedicated Control Channel SDCCH;
Perhaps,
When described user terminal was in non-speaker sub-district, described user terminal was reported in the window thereon, according to the value of described TA, sent the NORMAL BURST message of the positional information of carrying this user terminal to described base station in Fast Associated Control Channel FACCH.
Described user comprises the mobile subscriber who supports GPS.
The mobile subscriber of described support GPS comprises the trunking communication GT800 mobile subscriber of the 800M frequency range of supporting GPS.
As seen from the above technical solution provided by the invention, the present invention is by the current location information of the user terminal that utilizes GPS and provide, and the positional information of sub-district, user terminal place, calculate the Timing Advance TA ' between user terminal and its resident base station, and as the spacing wireless propagation distance TA of user terminal to its resident base station.Can realize the group calling user under the situation of non-interrupting service,, on dedicated channel, report its positional information to give network side according to the value of this TA.
Description of drawings
Fig. 1 is the process chart of the specific implementation of the method for the invention.
Embodiment
The invention provides a kind of method of user terminal to send up position information, the core of this method is: the positional information of the user terminal that provides according to GPS and the positional information of sub-district, user terminal place, calculate TA, value according to this TA, user terminal is reported in the window thereon, utilizes dedicated channel to report its positional information to give the base station.
Describe the present invention in detail below in conjunction with accompanying drawing, the process chart of the specific implementation of the method for the invention comprises the steps: as shown in Figure 1
Step 1-1, user terminal obtain the positional information of its sub-district, place.
The topology information of wireless network comprises the sign of each sub-district in the wireless network, the information such as longitude and latitude of sub-district, in the present invention, at first needs the position information such as longitude and latitude of sub-district, user terminal place are notified to user terminal.The method of notice comprises following several:
1, user terminal is downloaded the position information such as latitude and longitude information of sub-district in the wireless network by various wireless or wired modes.
2, when system is carried out dilatation, the topological the possibility of result of wireless network can change, and at this moment, can broadcast the position information such as latitude and longitude information of this sub-district by the expanding system message that the base station sends.
3, the base station sends a notification message in NCH (notification channel) and broadcasts the position information such as latitude and longitude information of this sub-district.
4, the base station uses FACCH (Fast Associated controlChannel, Fast Associated Control Channel) to steal the position information such as latitude and longitude information of this sub-district of frame mode informing user terminal in group-calling channel.
Step 1-2, user terminal calculate it and report window, utilize the positional information of the user terminal that GPS provides and the positional information of described sub-district, calculate the Timing Advance TA ' between user terminal and the base station, and as spacing wireless propagation distance TA.
When the mobile subscriber's who supports GPS user terminal is in the above-mentioned calling talk group, if user terminal is exhaled or the group calling speaker at point, then user terminal has been set up special-purpose the connection with network side, and user terminal can utilize the up frame of stealing to realize reporting of positional information.
If user terminal is not to exhale or be not the group calling speaker at point, promptly user terminal resides in the group-calling channel, and then user terminal carries out following operation:
User terminal at first according to its sequence number and current System Frame Number in the calling talk group, calculates it and reports window.Then, the position information such as latitude and longitude information of the current location information of the user terminal that user terminal provides according to GPS and its sub-district, place that has obtained calculate the air line distance L of user terminal to its resident base station, and error should be in 100 meters.
The position coordinates of supposing the resident base station of user terminal is X1, Y1, and the current position coordinates of the user terminal that GPS provides is X2, Y2, then according to Pythagorean theorem,
Then again according to formula: TA '=L/0.55 calculates the TA ' value of user terminal and base station.
TA ' is a space physics air line distance, and in communication system, TA (spacing wireless propagation distance) is the distance of the signal process of base station measurement, owing to the multipath reason, is not having under the line of sight situation, and TA is slightly larger than TA '.According to propagation model, multipath error does not influence the base station demodulation less than a TA unit (550 meters), in the present invention, thinks TA=TA '.
Step 1-3, user terminal report window, according to the value of TA, utilize dedicated channel that the positional information of user terminal is reported the base station.
As above step because user terminal can obtain TA according to the GPS locating information, then do not need to adopt the channel request of GSM regulation and immediately assignment procedure obtain the TA value.Reduce the information interaction with network, saved system resource.
When user terminal is in non-speaker sub-district, then the up channel free time of user terminal, can be used for information reporting.So user terminal is undertaken reporting in the window synchronously by frame number and base station,, in FACCH, send NORMAL BURST message to the base station, the positional information of carrying this user terminal among this NORMAL BURST thereon according to the value of the TA that calculates.
When user terminal is in the speaker sub-district, then user terminal is undertaken synchronously by frame number and base station, report in the window thereon, value according to the TA that calculates, in SDCCH (Standalone DedicatedControl Channel, Separate Dedicated Control Channel), report the NORMAL BURST message of the positional information of carrying this user terminal to give the base station.
Network side obtains the positional information of user terminal according to the information of the user terminal to send up received, and according to the frame number that simultaneous operation is carried out in described user terminal and base station, calculates user's sequence number of report of user terminal; Then, user's sequence number and the positional information that obtains reported the network controls center, and be presented in real time in the scheduling map.
The handling process of the described embodiment of the invention described above is applicable to the GT800 wireless user who supports GPS.Can make the GT800 wireless user who supports GPS when participating in group calling, also can in time report its positional information.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. the method for a user terminal to send up position information is characterized in that, comprising:
Its positional information that A, user terminal provide according to the positional information and the global position system GPS of its sub-district, place, calculate the space physics air line distance L between this user terminal and its resident base station, and according to this distance, determine the spacing wireless propagation distance TA of this user terminal to its resident base station, the positional information of described sub-district comprises the positional information of the base station of described sub-district;
B, described user terminal are reported in the window thereon, according to the value of described TA, send the message of the positional information of carrying this user terminal to described base station in dedicated channel.
2. method according to claim 1 is characterized in that, described steps A specifically comprises:
The user terminal of A1, support global position system GPS obtains the positional information of its sub-district, place;
The current location information of this user terminal that A2, described user terminal provide according to GPS and the positional information of sub-district, described place calculate the value of described L, and according to the value of L, determine the value of TA.
3. method according to claim 2 is characterized in that the positional information of described sub-district comprises the latitude and longitude information of the base station of described sub-district.
4. method according to claim 2 is characterized in that, described steps A 1 specifically comprises:
Described user terminal is downloaded the positional information of its sub-district, place by wireless or wired mode;
Perhaps,
When system was carried out dilatation, described user terminal obtained the positional information of its sub-district, place by the expanding system message that the base station sends;
Perhaps,
The notification message that described user terminal sends in notification channel NCH by the base station obtains the positional information of its sub-district, place;
Perhaps,
Described user terminal, uses Fast Associated Control Channel FACCH to steal the message that the frame mode sends and obtains the positional information of its sub-district, place in group-calling channel by the base station.
5. method according to claim 2 is characterized in that, described steps A 2 specifically comprises:
Described
Wherein, the position coordinates that the user terminal that X2, Y2 provide for GPS is current, X1, Y1 are the position coordinates of its resident base station of user terminal acquisition, and be described
6. according to claim 1,2,3,4 or 5 described methods, it is characterized in that described step B specifically comprises:
B1, described user terminal calculate it and report window, and undertaken synchronously by current System Frame Number and described base station according to its sequence number and current System Frame Number in the calling talk group;
B2, described user terminal are reported in the window thereon, according to the value of described TA, send the message of the positional information of carrying this user terminal to described base station in dedicated channel.
7. method according to claim 6 is characterized in that, the described message of carrying the positional information of this user terminal of described step B2 comprises formal burst NORMAL BURST message.
8. method according to claim 7 is characterized in that, described step B2 specifically comprises:
When described user terminal was in the speaker sub-district, described user terminal was reported in the window thereon, according to the value of described TA, sent the NORMAL BURST message of the positional information of carrying this user terminal to described base station in Separate Dedicated Control Channel SDCCH;
Perhaps,
When described user terminal was in non-speaker sub-district, described user terminal was reported in the window thereon, according to the value of described TA, sent the NORMAL BURST message of the positional information of carrying this user terminal to described base station in Fast Associated Control Channel FACCH.
9. method according to claim 1 is characterized in that described user comprises the mobile subscriber who supports GPS.
10. method according to claim 9 is characterized in that, the mobile subscriber of described support GPS comprises the trunking communication GT800 mobile subscriber of the 800M frequency range of supporting GPS.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101324719A CN100421526C (en) | 2005-12-20 | 2005-12-20 | Method for user terminal to send up position information |
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| CNB2005101324719A CN100421526C (en) | 2005-12-20 | 2005-12-20 | Method for user terminal to send up position information |
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| CN100421526C true CN100421526C (en) | 2008-09-24 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101547396B (en) * | 2008-03-24 | 2012-07-04 | 展讯通信（上海）有限公司 | Method for quickly reporting position in emergency calling process |
| CN101662731B (en) * | 2008-08-28 | 2012-07-18 | 中兴通讯股份有限公司 | Digital group system terminal and method for reporting GPS positioning information thereof |
| CN110351737A (en) * | 2013-01-25 | 2019-10-18 | 索尼公司 | Communication control unit, communication control method and wireless telecom equipment |
| CN108012229B (en) * | 2016-10-27 | 2020-07-31 | 海能达通信股份有限公司 | Terminal position information acquisition method and device, base station and terminal |
| CN109842932B (en) * | 2017-11-24 | 2021-06-22 | 华为技术有限公司 | Method and device for acquiring time advance |
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Patent Citations (6)
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| CN1318752A (en) * | 2000-04-20 | 2001-10-24 | 朗迅科技公司 | Acquisition of pilot phase offset delay parameter for radio terminal |
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