WO2014154049A1 - Procédé et dispositif de réception et d'envoi d'informations de localisation faisant appel à un signal multifréquence à deux tonalités - Google Patents

Procédé et dispositif de réception et d'envoi d'informations de localisation faisant appel à un signal multifréquence à deux tonalités Download PDF

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Publication number
WO2014154049A1
WO2014154049A1 PCT/CN2014/071297 CN2014071297W WO2014154049A1 WO 2014154049 A1 WO2014154049 A1 WO 2014154049A1 CN 2014071297 W CN2014071297 W CN 2014071297W WO 2014154049 A1 WO2014154049 A1 WO 2014154049A1
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WIPO (PCT)
Prior art keywords
combination
high frequency
low frequency
terminal
positioning information
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PCT/CN2014/071297
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English (en)
Chinese (zh)
Inventor
房稳
李剑侠
廖珺
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中兴通讯股份有限公司
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Publication of WO2014154049A1 publication Critical patent/WO2014154049A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements

Definitions

  • the present invention relates to a positioning information transmission technology, and in particular, to a method and apparatus for transmitting and receiving positioning information based on Dual Tone Multi-Frequency (DTMF).
  • DTMF Dual Tone Multi-Frequency
  • WIFI positioning is also possible.
  • Softbank a mobile network operator in Japan boarded the actual location of a large number of WIFI hotspots it belongs to on the server to support the implementation of WIFI positioning.
  • In-call positioning is a common application method in the fields of child monitoring and elderly monitoring. This method of triggering passive positioning through other functions can provide good protection for children or the elderly when they encounter bad people, and can send their position in a way that does not alarm the field personnel.
  • the embodiment of the present invention mainly provides a method and a device for transmitting and receiving positioning information based on DTMF, which avoids the problem that a transmission trace is left in the mobile phone when the positioning information is sent by using a multimedia message or a short message, and the solution described in the embodiment of the present invention can
  • the transmission of the positioning information is guaranteed to be completed only by the service function of the call itself, and the transmission of the positioning information is not affected by the other functions being turned off.
  • a DTMF-based positioning information sending method is provided by the embodiment of the present invention, where the method includes:
  • the location of the location is initiated, and the location information is encoded into a DTMF signal and then sent to the second terminal.
  • the first terminal initiates positioning of itself as:
  • the first terminal When the first terminal determines that the second terminal is a user in the address book that allows the location to be directly located, the first terminal directly initiates the location location; or, when the first terminal detects that the button is long pressed, initiates the location location.
  • the positioning information is encoded into a DTMF signal and sent to the second terminal: the four letters A, B, C, and D respectively represent east longitude, west longitude, north latitude, and south longitude, with A, B, C, Each of the three data in the back 9 digits of D represents a value, and the data is in decimal format.
  • the first three digits represent the degree value, the middle three digits represent the fractional value, and the last three digits represent the seconds value;
  • the 20-bit length data combined according to the above format represents the positioning information, and the positioning information is
  • the letters and numbers are encoded as DTMF signals in accordance with DTMF encoding rules, and the DTMF signals are superimposed on the voice signal in a communication channel and transmitted to the second terminal.
  • the encoding the letters and numbers in the positioning information according to the DTMF encoding rule as
  • the DTMF signal is:
  • Encode 1 as a combination of low frequency 697 Hz and high frequency 1209 Hz; encode 2 as a combination of low frequency 697 Hz and high frequency 1336 Hz; encode 3 as a combination of low frequency 697 Hz and high frequency 1477 Hz; encode 4 as low frequency 770 Hz and high frequency 1209 Hz Combine; encode 5 as a combination of low frequency 770 Hz and high frequency 1336 Hz; encode 6 as a combination of low frequency 770 Hz and high frequency 1477 Hz; encode 7 as a combination of low frequency 852 Hz and high frequency 1209 Hz; encode 8 as low frequency 852 Hz and high frequency a combination of 1336 Hz; encode 9 as a combination of low frequency 852 Hz and high frequency 1477 Hz; encode 0 as a combination of low frequency 941 Hz and high frequency 1336 Hz;
  • A is coded as a combination of low frequency 697 Hz and high frequency 1633 Hz; B is coded as a combination of low frequency 770 Hz and high frequency 1633 Hz; C is coded as a combination of low frequency 852 Hz and high frequency 1633 Hz; D is coded as low frequency 941 Hz and high frequency 1633 Hz combination.
  • the method further includes:
  • the first terminal sends the location information to the second terminal by SMS, and/or MMS, and/or email.
  • a method for receiving positioning information based on DTMF includes:
  • the second terminal decodes the received DTMF signal, and when the DTMF signal is determined to be positioning information, the positioning information is saved.
  • the second terminal decodes the received DTMF signal, and determines that the DTMF signal is positioning information, including: Decoding the received DTMF signal into a combination of a high frequency and a low frequency signal, and parsing the combination of the high frequency and low frequency signals into letters or numbers according to a DTMF decoding rule; when the parsed signal is A, recording is east longitude When the parsed signal is B, it is recorded as the west longitude; when the parsed signal is C, it is recorded as south latitude; when the parsed signal is D, it is recorded as north latitude; continue to receive the remaining DTMF signal and the letters
  • Each of the last 9 bits of data is parsed into a value according to the decimal analysis rule, and the value represented by the first three bits of data is recorded as a degree value, and the value represented by the middle three bits of data is recorded as a fractional value.
  • the value represented by the three-digit data is recorded as the second value.
  • the DTMF signal is parsed into letters or numbers according to a DTMF decoding rule, and includes:
  • the combination of the low frequency 697 Hz and the high frequency 1209 Hz is interpreted as 1; the combination of the low frequency 697 Hz and the high frequency 1336 Hz is interpreted as 2; the combination of the low frequency 697 Hz and the high frequency 1477 Hz is interpreted as 3; the combination of the low frequency 770 Hz and the high frequency 1209 Hz is interpreted as 4; resolve the combination of low frequency 770Hz and high frequency 1336Hz to 5; combine the combination of low frequency 770Hz and high frequency 1477Hz into 6; combine the combination of low frequency 852Hz and high frequency 1209Hz into 7; combine low frequency 852Hz and high frequency 1336Hz The resolution is 8; the combination of the low frequency 852 Hz and the high frequency 1477 Hz is interpreted as 9; the combination of the low frequency 941 Hz and the high frequency 1336 Hz is interpreted as 0;
  • the combination of the low frequency 697 Hz and the high frequency 1633 Hz is interpreted as A; the combination of the low frequency 770 Hz and the high frequency 1633 Hz is interpreted as B; the combination of the low frequency 852 Hz and the high frequency 1633 Hz is interpreted as C; and the combination of the low frequency 941 Hz and the high frequency 1633 Hz is interpreted as D.
  • the method further includes: the second terminal provides an option for the user to view the map or forward the information operation on the interface; when the second terminal detects that the user selects the forwarding device
  • the positioning information is described, the positioning information is edited into a short message, and/or a multimedia message, and/or an email is sent to other terminals.
  • a DTMF-based positioning information transmitting apparatus provided by an embodiment of the present invention, the apparatus The method includes: a positioning module, a DTMF encoder, and a positioning information sending module, where the positioning module is configured to initiate positioning of the first terminal after the first terminal establishes a call with the second terminal;
  • the DTMF encoder is configured to perform DTMF encoding on the positioning information
  • the positioning information sending module is configured to send the encoded DTMF signal to the second terminal.
  • the positioning module is further configured to: directly initiate location location when determining that the second terminal is a user that allows location location to be directly initiated in the address book; or, when detecting that the button is long pressed, initiate location location .
  • the device further includes: a first message editing module and a first message sending module; when the positioning is completed, but the call has ended,
  • the first message editing module is configured to edit the location information into a short message, and/or a multimedia message, and/or an email;
  • the first message sending module is configured to send the short message, and/or multimedia message, and/or email to the second terminal.
  • the DTMF-based positioning information receiving apparatus includes: a DTMF decoder and a positioning information saving module;
  • the DTMF decoder is configured to decode the received DTMF signal, and after determining that the received DTMF signal is the positioning information, send the positioning information to the positioning information saving module; the positioning information saving module is used to save the location Positioning information.
  • the device further includes: a second message editing module and a second message sending module, wherein the second message editing module is configured to: when receiving the user forwarding the positioning information instruction, edit the positioning information into a short message, and/or a multimedia message, And/or email;
  • the second message sending module is configured to send the location information edited as a short message, and/or a multimedia message, and/or an email to other terminals.
  • a method for transmitting and receiving positioning information based on dual-tone multi-frequency DTMF is provided in an embodiment of the present invention, The method includes:
  • the first terminal After the first terminal establishes a call with the second terminal, it initiates positioning of its own location. When the positioning is completed during the call, the positioning information is encoded into a DTMF signal and sent to the second terminal.
  • the second terminal decodes the received DTMF signal, and when the DTMF signal is determined to be positioning information, the positioning information is saved.
  • the method includes:
  • the user selects to directly initiate location location after establishing a call to a certain specific user in the first terminal phone book according to the need; or, when a long press of a button is selected, the location location is initiated.
  • the positioning information is encoded into a DTMF signal and sent to the second terminal: the four letters A, B, C, and D respectively represent east longitude, west longitude, north latitude, and south longitude, with A, B, C, Each of the three data in the following 9 digits represents a value.
  • the data is encoded in decimal format. The first three digits represent the degree value, the middle three digits represent the fractional value, and the last three digits represent the seconds value.
  • the formatted 20-bit data represents positioning information, and the letters and numbers in the positioning information are encoded into DTMF signals according to DTMF encoding rules, and the DTMF signals are superimposed on the voice signals in the communication channel and sent to the first Two terminals.
  • the letters and numbers in the positioning information are coded as DTMF signals according to the DTMF encoding rule:
  • Encode 1 as a combination of low frequency 697 Hz and high frequency 1209 Hz; encode 2 as a combination of low frequency 697 Hz and high frequency 1336 Hz; encode 3 as a combination of low frequency 697 Hz and high frequency 1477 Hz; encode 4 as low frequency 770 Hz and high frequency 1209 Hz Combine; encode 5 as a combination of low frequency 770 Hz and high frequency 1336 Hz; encode 6 as a combination of low frequency 770 Hz and high frequency 1477 Hz; encode 7 as a combination of low frequency 852 Hz and high frequency 1209 Hz; encode 8 as low frequency 852 Hz and high frequency a combination of 1336 Hz; encode 9 as a combination of low frequency 852 Hz and high frequency 1477 Hz; encode 0 as a combination of low frequency 941 Hz and high frequency 1336 Hz; A is coded as a combination of low frequency 697 Hz and high frequency 1633 Hz; B is coded as a combination of low frequency 770 Hz and high frequency 1633 Hz
  • the second terminal decodes the received DTMF signal, and determines that the DTMF signal is positioning information, including:
  • Each of the last 9 bits of data is parsed into a value according to the decimal analysis rule, and the value represented by the first three bits of data is recorded as a degree value, and the value represented by the middle three bits of data is recorded as a fractional value. The value represented by the three-digit data is recorded as the second value.
  • the parsing the DTMF signal into a letter or a number according to a DTMF decoding rule includes:
  • the combination of the low frequency 697 Hz and the high frequency 1209 Hz is interpreted as 1; the combination of the low frequency 697 Hz and the high frequency 1336 Hz is interpreted as 2; the combination of the low frequency 697 Hz and the high frequency 1477 Hz is interpreted as 3; the combination of the low frequency 770 Hz and the high frequency 1209 Hz is interpreted as 4; resolve the combination of low frequency 770Hz and high frequency 1336Hz to 5; combine the combination of low frequency 770Hz and high frequency 1477Hz into 6; combine the combination of low frequency 852Hz and high frequency 1209Hz into 7; combine low frequency 852Hz and high frequency 1336Hz The resolution is 8; the combination of the low frequency 852 Hz and the high frequency 1477 Hz is interpreted as 9; the combination of the low frequency 941 Hz and the high frequency 1336 Hz is interpreted as 0;
  • the combination of the low frequency 697 Hz and the high frequency 1633 Hz is interpreted as A; the combination of the low frequency 770 Hz and the high frequency 1633 Hz is interpreted as B; the combination of the low frequency 852 Hz and the high frequency 1633 Hz is interpreted as C; and the combination of the low frequency 941 Hz and the high frequency 1633 Hz is interpreted as D.
  • the first terminal sends the location information to the second terminal by using a short message, and/or a multimedia message, and/or an email.
  • the method further includes: the second terminal provides an option for the user to view the map or forward the information operation on the interface; when the second terminal detects that the user selects the forwarding device
  • the positioning information is described, the positioning information is edited into a short message, and/or a multimedia message, and/or an email is sent to other terminals.
  • the embodiment of the present invention provides a method and a device for transmitting and receiving positioning information based on DTMF.
  • the first terminal After the first terminal establishes a call with the second terminal, the first terminal initiates positioning of the location, and encodes the positioning information into a DTMF signal and sends the information to the second terminal.
  • the second terminal can obtain the positioning information by decoding the received DTMF signal; thus, the security and stability of the positioning information transmission can be improved, and the terminal can successfully succeed in the case of no data traffic or WIFI.
  • the positioning information is sent to the other party.
  • the method in the embodiment of the present invention can further make the transmission of the positioning information more concealed. After the transmission is completed, the transmission trace cannot be queried in the information transmission record, which can be very good for the user. Protection. DRAWINGS
  • FIG. 1 is a schematic flowchart of a DTMF-based positioning information sending method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a DTMF-based positioning information receiving method according to an embodiment of the present invention
  • FIG. 3 is a diagram showing an example of processing after a second terminal receives positioning information based on DTMF according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a DTMF-based positioning information sending apparatus according to an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of a DTMF-based positioning information receiving apparatus according to an embodiment of the present disclosure
  • FIG. 6 is a schematic flowchart of a method for transmitting and receiving positioning information based on DTMF according to an embodiment of the present invention. detailed description
  • DTMF technology is a major method of transmitting voice over a voice channel in a voice call. It was invented by Bell Labs and can be used to transmit signaling over an analog voice channel. It represents a number by superposition of two frequency signals in the time domain. As shown in Table 1, it is a digital diagram represented by the frequency superposition of DTMF.
  • DTMF superimposes a higher frequency signal and a lower frequency signal to represent numbers, letters or symbols. This feature makes it easy to distinguish and identify information sent via DTMF even if it is mixed in speech.
  • the location of the first terminal is initiated, and the location information is encoded as a DTMF signal and sent to the second terminal; the second terminal decodes the received DTMF signal, and determines When the DTMF signal is positioning information, the positioning information is saved.
  • a first embodiment of the present invention implements a DTMF-based positioning information sending method.
  • the method is shown in Figure 1.
  • the method mainly includes the following steps: Step 101: After the first terminal establishes a call with the second terminal, the location of the location is initiated by the first terminal.
  • the first terminal and the second terminal are only used to distinguish different terminals, and are not used for limitation.
  • the first terminal sets a visualized interface, so that the user can set the location positioning of the user by triggering the mechanism, and the user can set a position directly with the certain person after establishing the call.
  • the user can set the location of the user who saves the name as the father or the mother in the phone book to directly initiate the location of the user after establishing the call.
  • the number of users in the phone book that can be set to directly initiate the positioning is not performed.
  • the user can also set the position of the user to automatically initiate a position when the button on the first terminal is pressed during the call.
  • the user can set the button to automatically press the button when the volume is adjusted during the call.
  • Positioning of its own position in this way, when the user encounters an emergency situation, long press the button for adjusting the sound during the call, the first terminal automatically initiates the positioning of the user's location area; the user can also set and press other buttons as needed. For example: * key, # key, number key, etc. Positioning itself trigger position, where no restrictions;
  • Step 102 The first terminal encodes the location information into a DTMF signal and sends the message to the second terminal. After the user triggers the location location of the user in the manner described in step 101, if the location is completed before the call ends, Performing DTMF encoding on the positioning information, and then transmitting the encoded DTMF signal to the second terminal after being superimposed with the voice signal in the communication channel during the call;
  • the DTMF signal is essentially a combination of two simultaneously transmitted signal frequencies. As can be seen from Table 1, each symbol is uniquely determined by a high frequency signal and a low frequency signal, and the frequency combination can be superimposed and transmitted in the call voice, second.
  • the terminal can restore the number or symbol it represents by identifying such a frequency combination from the frequency domain;
  • the four letters are used to indicate east longitude, west longitude, north latitude and south longitude.
  • the length of the positioning information is the letter A indicating the east longitude or the west longitude or the indication north or south.
  • the length of the latitude letter or 0, plus the length of the 9-bit data after the two letters, is a total of 20 bits of data.
  • every three digits of the following 9-bit data of the letters A, B, C, and D represent a value
  • the three-bit data is encoded in a decimal format to represent the positioning information by 20-bit data combined according to the above format.
  • a decimal format For example, Tokyo 35 degrees 5 minutes 6 seconds, north latitude 120 degrees 10 minutes 8 seconds can uniquely determine the geographical location of the target, and this set of information is expressed by DTMF code: A035005006C120010008 form.
  • the location information indicates more than one format.
  • the positioning information of the above format is DTMF-encoded, that is, the letters and numbers are respectively encoded into corresponding low-frequency and high-frequency signals.
  • the letters and numbers in the foregoing positioning information are encoded into DTMF signals according to DTMF encoding rules:
  • Encode 1 as a combination of low frequency 697 Hz and high frequency 1209 Hz; encode 2 as a combination of low frequency 697 Hz and high frequency 1336 Hz; encode 3 as a combination of low frequency 697 Hz and high frequency 1477 Hz; encode 4 as low frequency 770 Hz and high frequency 1209 Hz Combine; encode 5 as a combination of low frequency 770 Hz and high frequency 1336 Hz; encode 6 as a combination of low frequency 770 Hz and high frequency 1477 Hz; encode 7 as a combination of low frequency 852 Hz and high frequency 1209 Hz; encode 8 as low frequency 852 Hz and high frequency a combination of 1336 Hz; encode 9 as a combination of low frequency 852 Hz and high frequency 1477 Hz; encode 0 as a combination of low frequency 941 Hz and high frequency 1336 Hz;
  • A is coded as a combination of low frequency 697 Hz and high frequency 1633 Hz; B is coded as a combination of low frequency 770 Hz and high frequency 1633 Hz; C is coded as a combination of low frequency 852 Hz and high frequency 1633 Hz; D is coded as low frequency 941 Hz and high frequency 1633 Hz Combination
  • the DTMF signal is And superimposed with the voice signal in the communication channel and then sent to the second terminal.
  • the method further includes: if the location of the location is completed, the two parties have finished the call, and the first terminal sends the location information to the second terminal by using a short message, a multimedia message or an email, where the short message, the multimedia message, the email can be used.
  • a short message a multimedia message or an email
  • the short message the multimedia message, the email can be used.
  • One of the ways to transmit you can also use any of the above methods in combination. In this way, the positioning information can be accurately and quickly sent out when the talk time is too short and it is not enough to complete the positioning during the call time.
  • Embodiment 2 of the present invention provides a DTMF-based positioning information receiving method.
  • the method flow diagram is shown in FIG. 2, and the method includes the following steps:
  • Step 201 The second terminal decodes the received DTMF signal.
  • the second terminal is a terminal capable of decoding the received DTMF signal into positioning information
  • the received DTMF signal is decoded, and the DTMF signal is determined as positioning information, including: the second terminal continuously performs frequency domain processing on the received voice signal during the call, if the DTMF signal is received. First parsing the DTMF signal into a corresponding frequency combination, that is, a combination of a high frequency signal and a low frequency signal, and then parsing the combination of the high frequency and low frequency signals into letters or numbers according to a DTMF decoding rule;
  • the parsing the DTMF signal into a letter or a number according to a DTMF encoding rule includes:
  • the combination of the low frequency 697 Hz and the high frequency 1209 Hz is interpreted as 1; the combination of the low frequency 697 Hz and the high frequency 1336 Hz is interpreted as 2; the combination of the low frequency 697 Hz and the high frequency 1477 Hz is interpreted as 3; the combination of the low frequency 770 Hz and the high frequency 1209 Hz is interpreted as 4; resolve the combination of low frequency 770Hz and high frequency 1336Hz to 5; combine the combination of low frequency 770Hz and high frequency 1477Hz into 6; combine the combination of low frequency 852Hz and high frequency 1209Hz into 7; combine low frequency 852Hz and high frequency 1336Hz Analyzed to 8; the combination of low frequency 852Hz and high frequency 1477Hz is resolved to 9; low frequency 941Hz and high frequency The combination of 1336Hz is resolved to 0; in addition,
  • the parsed DTMF signal is continuously judged. If the resolved frequency combination corresponds to one of A, B, C, and D, it is recorded as latitude and longitude information, specifically, when parsed signal When it is A, it is recorded as east longitude; when the parsed signal is B, it is recorded as west longitude; when the parsed signal is C, it is recorded as south latitude; when the parsed signal is D, it is recorded as north latitude;
  • Step 202 When the second terminal determines that the DTMF signal is positioning information, save the positioning information.
  • the second terminal After successfully parsing the DTMF signal and determining that it is the positioning information, the second terminal saves the received information;
  • the second terminal can further perform the operation on the positioning information, including: the user selects to enter the corresponding application according to the application menu set by the second terminal;
  • the pop-up of the application menu may be popped before the call ends or after the call ends, or before and after the call ends;
  • the user can view the map and forward the information by selecting an option in the application menu.
  • the second terminal automatically calls the map stored inside the terminal or on the network side, and marks the latitude and longitude information in the corresponding position of the map. , so that the user can clearly see the location information of the other party; additionally, after viewing the map, the user can also select a function of saving or forwarding the map image;
  • the second terminal edits the information, and then sends the edited positioning information to other terminal users.
  • FIG. 3 it is an example of processing after receiving the DTMF-based positioning information by the second terminal in the embodiment of the present invention
  • FIG. 3 (1) is a call recording screen after receiving the positioning information by using DTMF during the call.
  • the screen also adds the location information of the other party, and provides a menu for the user to select whether to enter the map view, or directly forward the location information;
  • the screen shown in FIG. 3 ( 2 ) is entered.
  • the second terminal calls the map stored in the terminal or on the network side, and the latitude and longitude information is marked on the corresponding position of the map, so that the user can clearly Seeing the location information of the other party, the specific location of the first terminal user is indicated by 301 in FIG. 3 ( 2 ).
  • the interface can also provide functions such as saving pictures, forwarding pictures, and the like;
  • the second terminal adds the map image to the information for editing, and then the user sends the edited information to other terminal users;
  • the subsequent location information of the corresponding call can be viewed through the call record.
  • the positioning result can be directly called in the call record.
  • the third embodiment of the present invention provides a DTMF-based positioning information sending apparatus, which is located in the first terminal.
  • the apparatus includes: a positioning module 41, a DTMF encoder 42 and positioning information. a sending module 43; wherein The positioning module 41 is configured to initiate positioning of the first terminal after the first terminal establishes a call with the second terminal;
  • the DTMF encoder 42 is configured to perform DTMF encoding on the positioning information
  • the positioning information sending module 43 is configured to send the encoded DTMF signal to the second terminal.
  • the DTMF encoder 42 performs DTMF encoding on the positioning information as: A, B, C, and D letters respectively indicate east longitude, west longitude, north latitude, and south latitude, with A, B, C, and D behind 9
  • Each three digits of the bit data represents a value, the data is encoded in a decimal manner, the first three digits represent the degree value, the middle three digits represent the fractional value, and the last three digits represent the seconds value;
  • the data of 20 bits in length represents positioning information, and the letters and numbers in the positioning information are encoded into DTMF signals according to DTMF encoding rules.
  • the encoding the letters and numbers in the positioning information into DTMF signals according to the DTMF encoding rule is:
  • Encode 1 as a combination of low frequency 697 Hz and high frequency 1209 Hz
  • encode 2 as a combination of low frequency 697 Hz and high frequency 1336 Hz
  • encode 3 as a combination of low frequency 697 Hz and high frequency 1477 Hz
  • encode 4 as low frequency 770 Hz and high frequency 1209 Hz
  • encode 5 as a combination of low frequency 770 Hz and high frequency 1336 Hz
  • encode 6 as a combination of low frequency 770 Hz and high frequency 1477 Hz
  • encode 7 as a combination of low frequency 852 Hz and high frequency 1209 Hz
  • encode 8 as low frequency 852 Hz and high frequency Combination of 1336 Hz
  • encode 9 as a combination of low frequency 852 Hz and high frequency 1477 Hz
  • encode 0 as a combination of low frequency 941 Hz and high frequency 1336 Hz
  • A is coded as a combination of low frequency 697 Hz and high frequency 1633 Hz; B is coded as a combination of low frequency 770 Hz and high frequency 1633 Hz; C is coded as a combination of low frequency 852 Hz and high frequency 1633 Hz; D is coded as low frequency 941 Hz and high frequency 1633 Hz combination.
  • the positioning module 41 is further configured to directly initiate location positioning when determining that the second terminal is a user in the address book that allows direct location location to be initiated; or, when the button is detected When a long press is pressed, the location is initiated.
  • the device further includes: a first message editing module 44 and a first message sending module 45; when the positioning is completed, but the call has ended, the shell 'J,
  • the first message editing module 44 is configured to edit the location information into a short message, and/or a multimedia message, and/or an email;
  • the first message sending module 45 is configured to send the positioning information edited as a short message, and/or a multimedia message, and/or an email to the second terminal.
  • the fourth embodiment of the present invention provides a DTMF-based positioning information receiving device, which is located in the second terminal, as shown in FIG. 5, the device includes: a DTMF decoder 51, a positioning information saving module 52; among them,
  • the DTMF decoder 51 is configured to decode the received DTMF signal, and after determining that the received DTMF signal is the positioning information, send the positioning information to the positioning information saving module 52;
  • the location information saving module 52 is configured to save the location information.
  • the DTMF decoder 51 decodes the received DTMF signal, including: decoding the received DTMF signal into a combination of a high frequency and a low frequency signal, and the high frequency and low frequency signals according to a DTMF decoding rule.
  • the combination is parsed into letters or numbers; when the parsed signal is A, it is recorded as east longitude; when the parsed signal is B, it is recorded as west longitude; when the parsed signal is C, it is recorded as south latitude; When the signal is D, it is recorded as north latitude; continue to receive the remaining DTMF signal and parse each three digits of the 9-bit data into a value according to the decimal resolution rule, and record the value represented by the first three digits of data. For the degree value, the value represented by the middle three digits of data is recorded as a fractional value, and the value represented by the last three digits of data is recorded as a second value.
  • the parsing the DTMF signal into a letter or a number according to a DTMF decoding rule includes: The combination of the low frequency 697 Hz and the high frequency 1209 Hz is interpreted as 1; the combination of the low frequency 697 Hz and the high frequency 1336 Hz is interpreted as 2; the combination of the low frequency 697 Hz and the high frequency 1477 Hz is interpreted as 3; the combination of the low frequency 770 Hz and the high frequency 1209 Hz is interpreted as 4; resolve the combination of low frequency 770Hz and high frequency 1336Hz to 5; combine the combination of low frequency 770Hz and high frequency 1477Hz into 6; combine the combination of low frequency 852Hz and high frequency 1209Hz into 7; combine low frequency 852Hz and high frequency 1336Hz The resolution is 8; the combination of the low frequency 852 Hz and the high frequency 1477 Hz is interpreted as 9; the combination of the low frequency 941 Hz and the high frequency 1336 Hz is interpreted as 0;
  • the positioning information receiving apparatus further includes: a second message editing module 53 and a second message sending module 54, a map module 55, wherein
  • the second message editing module 53 is configured to: when receiving the user forwarding location information instruction, edit the location information into at least one of a short message, a multimedia message, or an email;
  • the second message sending module 54 is configured to send the location information edited as a short message, and/or a multimedia message, and/or an email to other terminals;
  • the map module 55 is configured to, after receiving the user viewing the map instruction, invoke the local or network side map, and display the latitude and longitude information on the corresponding position of the map to be displayed to the user.
  • the map image may be saved when the user selects to save the map image; or when the user selects the image forwarding instruction, the image is forwarded.
  • the specific forwarding mode is: when the map module 55 detects that the user selects the forwarding picture instruction, the map picture is sent to the second message editing module 53, and the second message editing module 53 is called to perform the message editing operation. After the editing is completed, the second mode is passed.
  • the message sending module 54 sends the message to other user terminals.
  • Embodiment 5 A fifth embodiment of the present invention provides a method for transmitting and receiving positioning information based on dual-tone multi-frequency DTMF. The specific process is shown in FIG. 6. The method includes the following steps:
  • Step 601 After the first terminal establishes a call with the second terminal, the first terminal locates the location of the location, and the first terminal encodes the location information into a DTMF signal and sends the message to the second terminal.
  • the first terminal After the first terminal establishes a call with the second terminal, the first terminal determines that the second terminal is a user in the address book that directly initiates location location, and directly initiates location location. Or, when the first terminal detects that the button is long pressed, the location is initiated.
  • the encoding information is encoded into a DTMF signal and sent to the second terminal: the four letters A, B, C, and D respectively represent east longitude, west longitude, north latitude, and south longitude, followed by A, B, C, and D.
  • Each of the 9-bit data represents a value.
  • the data is encoded in decimal format. The first three digits represent the degree value, the middle three digits represent the fractional value, and the last three digits represent the seconds value.
  • the data of length 20 bits represents positioning information, and the letters and numbers in the positioning information are encoded into DTMF signals according to DTMF encoding rules, and the DTMF signals are superimposed on the voice signals in the communication channel and sent to the second terminal. .
  • the encoding the letters and numbers in the positioning information into DTMF signals according to the DTMF encoding rule is:
  • Encode 1 as a combination of low frequency 697 Hz and high frequency 1209 Hz; encode 2 as a combination of low frequency 697 Hz and high frequency 1336 Hz; encode 3 as a combination of low frequency 697 Hz and high frequency 1477 Hz; encode 4 as low frequency 770 Hz and high frequency 1209 Hz Combine; encode 5 as a combination of low frequency 770 Hz and high frequency 1336 Hz; encode 6 as a combination of low frequency 770 Hz and high frequency 1477 Hz; encode 7 as a combination of low frequency 852 Hz and high frequency 1209 Hz; encode 8 as low frequency 852 Hz and high frequency a combination of 1336 Hz; encode 9 as a combination of low frequency 852 Hz and high frequency 1477 Hz; encode 0 as a combination of low frequency 941 Hz and high frequency 1336 Hz;
  • the fifth embodiment of the present invention further provides a method for transmitting and receiving positioning information, which can combine the method for transmitting and receiving positioning information by using the DTMF method with the existing method for transmitting positioning information, during the call time. If it is too short to complete the positioning, the positioning information can still be sent accurately and quickly.
  • the method specifically includes: if the location of the location is completed, but the two parties have finished the call, the first terminal may send the location information to the second terminal by using a short message, and/or a multimedia message, and/or an email.
  • Step 602 The second terminal decodes the received DTMF signal, and determines that the DTMF signal is the positioning information, and saves the positioning information.
  • the second terminal decodes the received DTMF signal, and determines that the DTMF signal is location information, including:
  • Each of the last 9 bits of data is parsed into a value according to the decimal analysis rule, and the value represented by the first three bits of data is recorded as a degree value, and the value represented by the middle three bits of data is recorded as a fractional value. The value represented by the three-digit data is recorded as the second value.
  • the parsing the DTMF signal into a letter or a number according to a DTMF decoding rule includes:
  • the combination of low frequency 770 Hz and high frequency 1209 Hz is resolved to 4; the combination of low frequency 770 Hz and high frequency 1336 Hz is interpreted as 5; the combination of low frequency 770 Hz and high frequency 1477 Hz is interpreted as 6; the combination of low frequency 852 Hz and high frequency 1209 Hz is analyzed as 7
  • the combination of the low frequency 852 Hz and the high frequency 1336 Hz is interpreted as 8; the combination of the low frequency 852 Hz and the high frequency 1477 Hz is interpreted as 9; the combination of the low frequency 941 Hz and the high frequency 1336 Hz is interpreted as 0;
  • the method further includes: the second terminal provides an option for the user to view the map or forward the information on the interface; when the second terminal detects that the user selects to forward the positioning When the information is used, the positioning information is edited as a short message, and/or a multimedia message, and/or an email is sent to other terminals.
  • the user may also select to view the map or forward the information through the corresponding option in the second terminal application menu.
  • the first terminal invokes a map stored in the terminal or on the network side, and displays the latitude and longitude information on the corresponding position of the map for display; after viewing the map image, the user may select to save or forward the image;
  • the second terminal edits the picture into a multimedia message and/or mail and sends it to other terminals.
  • the second terminal edits the location information into one or more of a short message, a multimedia message, or a mail, and then sends the location information to other terminal users.
  • the present invention After the first terminal establishes a call with the second terminal, the present invention initiates location positioning of itself, and encodes the positioning information into a DTMF signal and sends the DTMF signal to the second terminal, and the second terminal decodes the received DTMF signal.
  • the positioning information can improve the security and stability of the positioning information transmission, and ensure that the terminal can successfully succeed in the absence of data traffic or WIFI.
  • the positioning information of the present invention is sent to the other party; and the method of the present invention can also make the transmission of the positioning information more concealed. After the transmission is completed, the transmission trace cannot be queried in the information transmission record, which can be very good for the user. Protective effects.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un procédé de réception et d'envoi d'informations de localisation faisant appel à un signal multifréquence à deux tonalités (DTMF). Le procédé comprend les opérations suivantes : un premier terminal déclenche sa localisation après établissement d'une communication avec un second terminal ; le premier terminal code des informations de localisation en un signal DTMF et l'envoie au second terminal ; le second terminal décode le signal DTMF reçu ; et lorsqu'il est déterminé que le signal DTMF est composé des informations de localisation, le second terminal sauvegarde les informations de localisation. Un dispositif de réception et d'envoi d'informations de localisation faisant appel à un signal DTMF est également décrit en même temps. Au moyen de la solution de la présente invention, un terminal peut envoyer avec succès ses informations de localisation à l'autre correspondant sans trafic de données ni WIFI et peut améliorer la sécurité et la stabilité d'envoi d'informations de localisation ; et de plus, le procédé selon la présente invention peut également permettre de dissimuler davantage l'envoi d'informations de localisation, et une trace d'envoi ne peut pas être recherchée dans un enregistrement d'envoi d'informations après que l'envoi a été achevé, ce qui permet de très bien protéger un utilisateur.
PCT/CN2014/071297 2013-09-10 2014-01-23 Procédé et dispositif de réception et d'envoi d'informations de localisation faisant appel à un signal multifréquence à deux tonalités WO2014154049A1 (fr)

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