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Method for transmitting position information in voice service

A technology for location information and voice services, applied in wireless communication, wireless communication services, electrical components, etc., to solve problems such as voice data occupying the receiver's transmitter's transmission time slot, voice calls cannot be implemented, and location information cannot be transmitted.

Active Publication Date: 2013-11-20
SAMHOO SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, in the prior art, during the entire voice service process, the voice data always occupies the receiving time slot of the receiving party and the transmitting time slot of the transmitting party, so the transmission of location information cannot be performed during the entire voice call process.
However, in the actual process of using professional wireless communication equipment to transmit voice, users sometimes need to transmit location information, such as the longitude and latitude of the calling party, and the auxiliary location information of the calling party without interrupting the voice call: Including the transmission of altitude, movement speed, movement direction, etc. to the other party, but it cannot be realized in the existing voice call

Method used

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  • Method for transmitting position information in voice service
  • Method for transmitting position information in voice service
  • Method for transmitting position information in voice service

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Embodiment Construction

[0040] In the present invention, the location information header includes 12 BIT data, respectively defined as Table 1:

[0041]

[0042] The information header is divided into 3 rows, and each row contains 4 BIT data, that is, 3*4 row and column data. The row data uses hamming (7,4,3) for forward error correction, and the columns use simple parity to form 4 *7 (28bits) row and column data, such as Figure 17 . The position information header occupies 28 bits of the voice frame embedded in the 32bits area, and the remaining 4bits are filled with 0 to form a 32bits data area. The data is filled in the interleaving mode from top to bottom and from left to right, such as Figure 18 . The information containing the location information block is filled according to the information in Table 1, and the data block protection mode is set according to the frame data type (FT). The content of the data sent each time is based on the information identifier and status identifier, and...

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Abstract

The invention relates to a method for transmitting position information in a voice service. The method comprises the following steps: after continuously transmitting first-group voice of 20ms*N at a sending end, replacing voice data in a preset first 20ms time period by position information data and specific identification and sending, wherein the N is larger than or equal to 20; continuously transmitting second-group voice of 20ms*N, replacing preset voice data in a second 20ms time period in a voice super frame by the position information data and specific identification and sending, wherein the N is larger than or equal to 20; and so on, sending all data; at a receiving end, after continuously obtaining the first-group voice of 20ms*N, obtaining the position information data and the specific identification in the preset first 20ms time period in the voice super frame and processing, wherein the N is larger than or equal to 20; after continuously obtaining the second-group voice of 20ms*N, obtaining the position information data and the specific identification in the preset second 20ms time period in the voice super frame and processing, wherein the N is larger than or equal to 20; and so on, receiving all data. The method for transmitting the position information in the voice service, which is disclosed by the invention, has the advantages that the position information data is simultaneously transmitted in a voice communication process when a PDT (photodynamic therapy) device or a DMR (deuteron magnetic resonance) device is used.

Description

technical field [0001] The invention relates to a method for simultaneously transmitting voice and position information in a professional wireless communication terminal or system, in particular to a method for simultaneously transmitting voice and position information in DMR / PDT equipment. Background technique [0002] In the prior art, a TDMA frame of professional wireless communication consists of a 30ms sending BURST and a 30ms receiving BURST. In the voice service transmission process, six consecutive TDMA frames form a superframe for voice transmission, with a length of 360ms , which are numbered from "A" to "F" in turn. Since a TDMA frame takes up 60ms and only 30ms is used for transmission, the 60ms voice in a TDMA frame must be transmitted within 30ms of sending BURST, such as figure 1 shown. [0003] In professional wireless communication, speech frame A is a synchronous speech frame, which can be identified according to the synchronous characteristic symbol; the ...

Claims

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Application Information

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IPC IPC(8): H04W4/00
Inventor 徐兴国郭强蔡波李明
Owner SAMHOO SCI & TECH CO LTD
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