CN201623754U - Tetra and GSM dual-mode handset - Google Patents

Tetra and GSM dual-mode handset Download PDF

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Publication number
CN201623754U
CN201623754U CN201020167818XU CN201020167818U CN201623754U CN 201623754 U CN201623754 U CN 201623754U CN 201020167818X U CN201020167818X U CN 201020167818XU CN 201020167818 U CN201020167818 U CN 201020167818U CN 201623754 U CN201623754 U CN 201623754U
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China
Prior art keywords
tetra
gsm
pattern
mode
control chip
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Expired - Lifetime
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CN201020167818XU
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Chinese (zh)
Inventor
白龙
肖文雄
黄建尧
王长嵩
郑敏敏
陈志勇
孙圣举
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Tianjin 712 Communication and Broadcasting Co Ltd
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Tianjin 712 Communication and Broadcasting Co Ltd
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Priority to CN201020167818XU priority Critical patent/CN201623754U/en
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Abstract

The utility model relates to a Tetra and GSM dual-mode handset. The Tetra (Terrestrial Trunked Radio) and GSM (Global System for Mobile Communications) dual-mode handset comprises a master control chip and a GSM functional module, wherein the master control chip is respectively connected with a man-machine interaction interface, a Tetra functional module and an audio device; the GSM functional module is connected with the master control chip which inputs a program for switching the Tetra mode and the GSM mode; and the audio device adopts a dual-mode selector switch. The Tetra and GSM dual-mode handset has the benefits of not only being capable of carrying out communication at areas covered by Tetra network by utilizing the advantages of speed calling establishment of Tetra protocol, cluster communication, low-background noise and the like, but also being capable of carrying out communication by utilizing GSM network with wider covering range at areas covered by the Tetra network.

Description

Tetra and GSM dual-mode handset
Technical field
The utility model relates to wireless communication technology, particularly a kind of Tetra (the land clustered wireless system of Terrestrial Trunked Radio----) and GSM (Global System for Mobile Communications----global system for mobile communications) dual-mode handset.
Background technology
Existing Tetra terminal can be because the network coverage be not comprehensive, when terminal not within base station range or signal when not good, cause the problem that can't converse.
Summary of the invention
In view of the prior art situation, the utility model provides a kind of Tetra and GSM (Global System for MobileCommunications----global system for mobile communications) dual-mode handset.The design is with difunctional and by main control chip realization Tetra and GSM dual-mode network call function, so that the Tetra network can't cover or near when not having the Tetra terminal to carry out DMO (Direct Mode Operation----direct mode operation) direct communication pattern, can utilize the coverage rate GSM network conversation of meeting an urgent need more widely.
The technical scheme that the utility model is taked for achieving the above object is: a kind of Tetra and GSM dual-mode handset, comprise the main control chip that is connected with human-computer interaction interface, Tetra functional block and audio frequency apparatus respectively, it is characterized in that: also comprise the GSM functional block, the GSM functional block is connected with main control chip, input is useful on the program that control Tetra pattern and GSM pattern are switched on the main control chip, and what the switch on the described audio frequency apparatus adopted is that bimodulus is selected diverter switch.
The described changeover program that is used to control Tetra pattern and GSM pattern may further comprise the steps:
1., at first enter the TMO pattern, the Tetra protocol stack is started working, and the queued for log-on of search Tetra network if the TMO pattern succeeds in registration, then stays in the TMO pattern within a certain period of time, and the Tetra protocol stack works on; If TMO pattern registration failure, then switching enters into the GSM pattern, and the gsm protocol stack is started working;
2., longly under the TMO pattern press numerical key 3, cancel register under the TMO pattern, pattern enters into the GSM pattern by the TMO mode switch, the gsm protocol stack is started working;
3., longly under the GSM pattern press numerical key 3, pattern enters into the DMO pattern by the GSM mode switch, the Tetra protocol stack is started working;
4., under the DMO pattern the long numerical key 3 of pressing, pattern turns back to the TMO pattern of queued for log-on state by the DMO mode switch, the Tetra protocol stack is started working.
The beneficial effect that the utility model produced is: both can be in the zone that the Tetra network coverage is arranged, utilize Tetra agreement short calling to set up, the cluster conversation, advantages such as low background noise communicate, and can utilize the wider GSM network of coverage to communicate again in the zone of the no Tetra network coverage.
Description of drawings
Fig. 1 is the utility model major function piece catenation principle block diagram;
Fig. 2 is the utility model Tetra pattern and GSM mode switching program flow chart.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
With reference to Fig. 1, Tetra mainly comprises the main control chip 3 that is connected with human-computer interaction interface 2 (comprising display screen, keyboard, indicator light etc.), Tetra functional block 6 and audio frequency apparatus 4 (comprising loudspeaker, MIC etc.) respectively with GSM dual-mode handset 1, also comprises necessary modules such as GSM functional block 5 and the power supply of other power supply, memory device.GSM functional block 5 and main control chip 3 are connected by serial ports, and input is useful on the program that control Tetra pattern and GSM pattern are switched on the main control chip 3, and what the switch on the audio frequency apparatus 4 adopted is that bimodulus is selected diverter switch.
GSM functional block 5 and Tetra functional block 6 common same main control chip and other power supply power supply, memory device, the audio frequency apparatuses 4 etc. of using.The switching of the calling subaudio frequency equipment 4 of different mode, memory device etc. is used and is all realized by main control chip.
Being used to control the program that Tetra pattern and GSM pattern switch may further comprise the steps:
1., at first enter the TMO pattern, the Tetra protocol stack is started working, and the queued for log-on of search Tetra network if the TMO pattern succeeds in registration, then stays in the TMO pattern within a certain period of time, and the Tetra protocol stack works on; If TMO pattern registration failure, then switching enters into the GSM pattern, and the gsm protocol stack is started working; The gsm protocol stack then can respond MMI (Main-Machine Interface-Man Machine Interface) operation--and as the input of keyboard, and then control GSM functional block is carried out data computing, transmission and reception, use conversation, functions such as short message.
2., longly under the TMO pattern press numerical key 3, cancel register under the TMO pattern, pattern enters into the GSM pattern by the TMO mode switch, the gsm protocol stack is started working; The gsm protocol stack then can respond the MMI operation--and as the input of keyboard, and then control GSM functional block is carried out data computing, transmission and reception, use conversation, functions such as short message.
3., longly under the GSM pattern press numerical key 3, pattern enters into the DMO pattern by the GSM mode switch, the Tetra protocol stack is started working; The Tetra protocol stack then can respond the MMI operation--and as the input of keyboard, and then control Tetra functional block is carried out data computing, transmission and reception, use conversation, functions such as short message.
4., the long numerical key 3 of pressing under the DMO pattern, pattern is turned back to the TMO pattern of queued for log-on state by the DMO mode switch, the Tetra protocol stack is started working, the Tetra protocol stack then can respond the input of MMI--such as keyboard, and then control Tetra functional block is carried out data computing, transmission and reception, use conversation, functions such as short message.
The software configuration of dual-mode handset mainly is divided into the Tetra protocol stack, gsm protocol stack and MMI (Man Machine Interface) three parts.
Under the Tetra pattern, the Tetra protocol stack is by the control and the data-interface 7 control Tetra functional blocks 6 of main control chip 3.Under the GSM pattern, the gsm protocol stack is by sending AT commands for controlling GSM functional block 5 to serial ports.MMI is responsible for button, liquid crystal display screen, indicator light etc., carry out alternately with protocol stack (Tetra protocol stack or gsm protocol stack), realize functions such as conversation, note by button operations such as menu selection, editors and carry out feedback function by indicator light and audio frequency apparatus.
The Tetra pattern is divided into TMO (Trunked Mode Operation uses the base station) and two kinds of mode of operations of DMO (without the base station).Therefore the mode of operation of dual-mode handset is divided into three kinds: TMO pattern, DMO pattern and GSM pattern.These three kinds of mode of operations can be switched by menu or shortcut (long by numerical key " 3 ").
Concrete a switching in the realization example, the switching that the user realizes GSM or Tetra by human-computer interaction interface 2, information is delivered to main control chip 3 by Man Machine Interface 8, and main control chip 3 is realized the startup of gsm module by serial ports again or is closed.
And when receiving calling or sending calling, if the calling in the Tetra network, then the data that sent by Tetra functional block 6 are sent to main control chip 3 by control and data-interface 7, main control chip 3 is with after the data processing, be sent to audio frequency apparatus 4 by speech interface 9 again, and audio frequency apparatus 4 switched, be connected to Tetra functional block 6, realize calling out under the Tetra pattern.In like manner, if the calling in the GSM network, the data that GSM functional block 5 sends are to be sent to main control chip 3 by serial ports, main control chip 3 is with after the data processing, be sent to audio frequency apparatus 4 by speech interface 9, and audio frequency apparatus 4 switched, be connected to GSM functional block 5, realize calling out under the GSM pattern.
In actual hardware of the present utility model is realized, main control chip is OMAP3530 (ARM+DSP double-core) chip of TI company, the GSM functional block is used the GSM0308AT001 pattern piece of Enfora company, and the Tetra function then is to be finished by the radio-frequency (RF) transmit-receive circuit of non-modularization.What the interface between OMAP3530 chip and the GSM functional block used is serial ports (RS232 also can be other standard interface or self defined interface).And the interface between Tetra functional block and the OMAP3530 chip is data and control interface 7.Because the Tetra radio frequency is realized the non-integrated multiple interfaces that then includes of part, comprises I 2C, SPI are connected control line etc. with some other.

Claims (1)

1. Tetra and GSM dual-mode handset, comprise the main control chip (3) that is connected with human-computer interaction interface (2), Tetra functional block (6) and audio frequency apparatus (4) respectively, it is characterized in that: also comprise GSM functional block (5), GSM functional block (5) is connected by serial ports with main control chip (3), main control chip (3) is gone up input and is useful on the program that control Tetra pattern and GSM pattern are switched, and what the switch on the described audio frequency apparatus (4) adopted is that bimodulus is selected diverter switch.
CN201020167818XU 2010-04-23 2010-04-23 Tetra and GSM dual-mode handset Expired - Lifetime CN201623754U (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
CN201020167818XU CN201623754U (en) 2010-04-23 2010-04-23 Tetra and GSM dual-mode handset

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018107362A1 (en) * 2016-12-13 2018-06-21 海能达通信股份有限公司 Wideband and narrowband communication device and method
US12009173B2 (en) * 2020-04-28 2024-06-11 Hubbell Incorporated Wireless battery-powered switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018107362A1 (en) * 2016-12-13 2018-06-21 海能达通信股份有限公司 Wideband and narrowband communication device and method
US12009173B2 (en) * 2020-04-28 2024-06-11 Hubbell Incorporated Wireless battery-powered switch

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP03 Change of name, title or address

Address after: 300140 No. 141 North Main Street, economic and Technological Development Zone, Binhai New Area, Tianjin

Patentee after: Tianjin 712 Communications Broadcasting Limited by Share Ltd

Address before: 300140 Hebei District new road, Tianjin, No. 185

Patentee before: Tianjin 712 Communication Broadcast Co., Ltd.

Address after: 300140 No. 141 North Main Street, economic and Technological Development Zone, Binhai New Area, Tianjin

Patentee after: Tianjin 712 Communications Broadcasting Limited by Share Ltd

Address before: 300140 Hebei District new road, Tianjin, No. 185

Patentee before: Tianjin 712 Communication Broadcast Co., Ltd.

CX01 Expiry of patent term

Granted publication date: 20101103

CX01 Expiry of patent term