WO2012022165A1

WO2012022165A1 - Method for implementing simplex communication based on mobile phone terminal

Info

Publication number: WO2012022165A1
Application number: PCT/CN2011/073382
Authority: WO
Inventors: 何顺兰
Original assignee: 浙江元亨通信技术有限公司
Priority date: 2010-08-19
Filing date: 2011-04-27
Publication date: 2012-02-23
Also published as: CN101951702A

Abstract

Currently, when an interphone is in conversation, the voice thereof is unidirectional and few resources are occupied, however, the clarity of the voice is relatively poor, and signals can be easily interfered with during conversation, so the conversation quality is poor. The invention provides a method for implementing simplex communication based on a mobile phone terminal. The method includes the following steps: the mobile phone terminal dials a target number to initiate a call, a public network exchanger receives a call signaling and forwards a voice channel to an added-value platform; after a called party answers, a relay module establishes voice channel connection and sends a connection time slot channel to an exchange module, and then the exchange module establishes initial one-way voice exchange from a calling party to a called party; a user presses a listen/speak key on the mobile phone terminal, a mobile phone software module simulates the key to transmit a Dual-Tone Multi-Frequency (DTMF) key signal to the added-value platform; a DTMF module monitors the key signal corresponding to the relay time slot in real time and analyzes whether the key signal is a simplex communication key signal; and after the key is matched, the exchange module finds out the corresponding relay time slot and changes voice direction, thus the simplex communication between the mobile phone terminals is realized.

Description

Method for realizing simplex communication based on mobile phone terminal

Technical field

The present invention relates to the field of wireless communications, and more particularly to a method for implementing simplex communication based on a mobile phone terminal.

Background technique

When the walkie-talkie is in a call, its voice is one-way, occupying less resources, but its voice clarity is poor, and the probability of the signal being interfered during the call is high, and the call quality is poor. As is known, when a mobile phone is in a call, its voice is two-way, that is, its voice transmission and reception are in full-duplex mode, and can be performed simultaneously. If the mobile phone can achieve simplex calls, the mobile phone application can save bandwidth and improve speech intelligibility in the voip network, and can reduce the signal interference probability in narrowband network applications.

Technical solution

The object of the present invention is to provide a method for realizing simplex communication based on a mobile phone terminal, so that a relatively popular communication device mobile phone also has the same function as a walkie-talkie.

To this end, the present invention adopts the following technical solution: a method for implementing simplex communication based on a mobile phone terminal, which is characterized in that it comprises a mobile phone terminal, a mobile phone software module installed on the mobile phone terminal, and a communication and communication with a public network switch. Value-added platform.

When the listen/talk button is pressed and the listening/talking mode is switched on the mobile terminal, the mobile phone software module simulates a DTMF button signal and sends it to the value-added platform.

The value-added platform includes a DTMF module, a relay module, a switch module, and an IVR module, and the switch module establishes a data connection channel with the DTMF module, the relay module, and the IVR module, respectively.

The steps for the mobile terminal to implement simplex communication are as follows.

1) The mobile terminal dials the target number to initiate a call, and the public network switch receives the call signaling, and transfers the call to the value-added platform.

2) After the called party answers the call, the relay module establishes the voice channel connection, and sends the docking time slot channel to the switching module, and the switching module establishes a one-way voice exchange initially from the calling party to the called party.

3) The user presses the “listen/talk” button on the mobile terminal, and the mobile phone software module analog button sends a DTMF button signal to the value-added platform.

4) The DTMF module monitors the key signal of the corresponding relay time slot in real time, and analyzes whether the key signal is a single-pass key; after the key is matched, the switching module finds the corresponding relay time slot, changes the voice flow direction, and realizes the simplex between the mobile terminal Communication.

The above method for realizing simplex communication based on the mobile terminal, the mobile phone software module can perform custom listening/speaking button setting, the process is as follows: recording the value corresponding to the customized listening/speaking button selected by the user through the mobile phone SDK interface, and then when the user When the selected button is pressed, the phone software module simulates a DTMF button signal for transmission.

Beneficial effect

The invention controls the switching of the simplex voice by the mobile terminal, and realizes the one-way exchange and transmission of the voice on the value-added platform; the invention is applicable not only to the voip network but also to all the narrowband communication networks, and can be saved in the voip application. Bandwidth, improve speech intelligibility, reduce signal interference probability in narrowband network applications; mobile phone software modules can be customized button settings, that is, users can define their own voice receiving and sending buttons, and mobile phone terminals are more convenient to use.

DRAWINGS

The invention will be further described below in conjunction with the drawings and specific embodiments.

Figure 1 is a schematic diagram of the principle of the present invention.

2 is an internal logic diagram of a value-added platform of the present invention.

3 is a data flow diagram of a value-added platform of the present invention.

Embodiments of the invention

The method for implementing simplex communication based on a mobile phone terminal as shown in FIG. 1 is as follows:

1) The mobile phone user dials the target number to initiate a call, and the public network switch transfers the voice channel to the value-added platform according to the configuration.

2) After the called party answers the call, the relay module establishes the voice channel docking, acquires the docked relay time slot, and establishes a corresponding one-way voice exchange from the calling party to the called party through the switching module.

4) The DTMF module detects the button signal of the corresponding relay time slot in real time. When the DTMF module receives the button signal, it acquires the button relay channel number and the button number, and analyzes whether the button number is the corresponding button number for listening/speaking (ie, determining the button number) Whether it matches).

5) After the keys are matched, the switching module finds the exchange time slot of the corresponding relay channel and changes the voice exchange direction.

The following is a detailed description of the role of each module in the value-added platform, as shown in Figure 2.

1) The relay module provides an E1 or IP connection interface exchanged with the public network and processes related signaling.

2) The switch module provides 4096×4096 switch matrix resources to establish a data connection channel with the relay module, the DTMF module and the IVR module respectively, and can realize one-to-one and one-to-many one-way and two-way connections.

3) DTMF module, real-time rotation training scans the key signals of each relay channel to provide the receiving/transmitting function.

4) IVR module for providing resources and control interfaces for playback and recording of relay channels.

The following describes the data flow between each module in the value-added platform, as shown in Figure 3.

1) The relay module acquires the relay time slot corresponding to the master and the called party, and sends the time slot number (or channel number) to the switching module after the two parties answer the call, requesting the docking.

2) The switching module receives the corresponding relay time slot of the calling and called parties, and selects two switching time slots to complete as follows

Switching: Assume that the calling time slot is T1, the called time slot is T2, and the selected two switching time slots are S1 and S2, then T1->S1, S1->S2, S2->T2 are established. One-way exchange.

3) The DTMF module detects the key signals of each relay channel in real time. When receiving the key signal of a certain time slot, it analyzes the key relay time slot and key information; if the key number is the corresponding button of the listening/speaking switch The number is sent to the switch module by the button relay time slot, requesting to change the voice exchange direction.

4) After receiving the exchange request described in 3), the switch module finds the corresponding relay time slot. If the T2 button requests to speak, then the original T1->S1, S1->S2, S2->T2 are removed. The one-way exchange establishes a new exchange of T2->S2, S2->S1, S1->T1, thus completing the voice transmission direction.

Claims

A method for realizing simplex communication based on a mobile phone terminal, characterized in that it comprises a mobile phone terminal, a mobile phone software module installed on the mobile phone terminal, and a value-added platform connected and communicated with the public network switch;

When the listen/talk button is pressed and the listening/talking mode is switched on the mobile terminal, the mobile phone software module simulates a DTMF button signal and sends it to the value-added platform;

The value-added platform includes a DTMF module, a relay module, a switch module, and an IVR module, and the switch module establishes a data connection channel with the DTMF module, the relay module, and the IVR module, respectively;

The steps for the mobile terminal to implement simplex communication are as follows:

1) Using the mobile terminal to dial the target number to initiate a call, the public network switch receives the call signaling, and transfers the call to the value-added platform;

2) After the called party answers the answer, the relay module establishes the voice channel docking, and sends the docking time slot channel to the switching module, and the switching module establishes a one-way voice exchange initially from the calling party to the called party;

3) The user presses the 'listen/speak' button on the mobile terminal, and the mobile phone software module analog button sends a DTMF button signal to the value-added platform;

4) The DTMF module monitors the key signal of the corresponding relay time slot in real time, and analyzes whether the key signal is a single-pass key; after the key is matched, the switching module finds the corresponding relay time slot, changes the voice flow direction, and realizes the simplex between the mobile terminal Communication.
The method for realizing simplex communication based on a mobile phone terminal according to claim 1, wherein the mobile phone software module can perform custom listening/speaking button setting, and the process is as follows: recording the user-selected custom listening/by the mobile phone SDK interface/ The value corresponding to the button is spoken, and then when the user presses the selected button, the phone software module simulates a DTMF button signal for transmission.