UA66068A - Method and appliance for transmission of short text messages (sms) between the cellular telephones of the gsm standard without participation of the short messages cervice center (smsc) - Google Patents

Abstract

Method for transmission of short text messages between two cellular telephones in the cellular communication networks of the GSM standard. Transmission of the messages takes place without participation of short messages service center of the GSM network operator, thus directly from telephone to telephone, by means of supplementary specially developed units "DataSMS key". Transmission from the sender to receiver takes place through a specially developed unit "DataSMS center", this receives the messages from the sender by means of the service of the GSM network "fax and data transmission" and sends the message to the receiver by standard method through the short message service center of the GSM network operator, or through Internet by means of personal computer.

Description

The invention relates to such a field of technology as the transmission of discrete information using cellular communication channels. The device can be used to provide information transmission services (short text messages) using cellular phones for corporate networks, as well as for individual users.

To date, digital cellular communication networks of the 25M standard have gained worldwide distribution. Operators of these networks, as a rule, provide their subscribers with such a well-known service as "transmission of short text messages (5М5)". Currently, there is one standard method of transmitting short text messages in cellular networks of the OZM standard, which is based on the use of a short message service center (5M5C) as an intermediary (buffer), as shown in Fig. 1 (Transmission of short text messages in a standard way through the operator's service center O5M network). The principle of this method, which is disclosed in detail in the OBM standard (mylu.eiv.ogud), is that subscriber 1, who wants to send a short text message to subscriber 2, first sends it to the service center of his operator, who is then responsible for delivering this message to the subscriber 2.

The disadvantages of this method of information exchange between two subscribers are: - low confidentiality of information exchange (all messages go through one service center, where they are stored for some time on data carriers); - low reliability and stability (communication between all subscribers depends on the stability of one service center); - high cost of the service (operators charge a static fee for one message, as a rule, disproportionately large to the time of network activation during message transmission); - the sender does not know the reasons why the addressee did not receive the message (the addressee is out of range, the addressee's phone is switched off, there is no free space left in the addressee's phone to receive the message, etc.); - the addressee, in case there is no space left in his phone for receiving messages, does not know that a queue of new messages is waiting for him,

All these shortcomings are due to the Z5ZM standard, since the exchange of information does not take place directly between the sender and the addressee, but through the service center, which has restrictions on the functions of working with subscribers' cellular phones.

The invented method of sending short text messages uses a well-known service of OZM networks, such as "fax and data transfer", to deliver a short text message from phone to phone, as a result of which the service center as an intermediary between the sender and the addressee has been eliminated, as shown in fig. .2 (Transmission of short text messages in an invented way without a service center, using special devices "Saia5M5 key").

This is achieved thanks to the use of specially designed devices (called "Sai(azm5 key)"), the task of which is to organize a data transmission channel between phones. Such a device consists of a control unit of a cellular phone, as shown in Fig. 3 (Structural diagram of the invented device "bayazm5 key"). The control unit is implemented on the basis of a microcontroller controlled by a specially developed firmware. Structurally, the microcontroller is located in the external connector of the corresponding brand of phone, which is connected to the built-in connector of the phone. Thus, because of this, with the connection of the phone and the microcontroller supplies power to the latter and information is exchanged between them according to the corresponding cellular phone protocol.

In dynamics, the work of the final developed devices looks as follows. The sender types a short text message on their cell phone using the phone's features, selects the addressee's number from the address book, and stores the message in the phone's memory for outgoing messages.

A specially designed device, which is connected to the service connector of a cellular phone, scans the phone's memory at certain intervals, reads the message saved by the sender and activates a call to the addressee's number, using the "fax and data transmission" service of the Y5M network. The device connected to the recipient's cell phone analyzes the calls to this phone if they are due to data transmission, automatically picks up the phone and, within 3 seconds, receives a message from the sender's device and hangs up. After that, the recipient's device records the received message in the cell phone's memory for newly received and unread messages and signals this to the recipient with a phone beep. The end device serves as a receiver and transmitter of information at the same time.

The new method of transmitting short text messages between cellular phones of the O5M standard with the help of auxiliary terminal devices has new properties and improved characteristics compared to the standard method, namely: - a high degree of confidentiality (information is transmitted directly between two subscribers, without recording or registering in the operator's service center ); - great sustainability of exchange channels between subscribers (there is no dependence on the stability of the operator's service center); - reduced cost of sending one message (payment is made only for a 2-second connection between phones, which is much less than the price of sending a message through the operator's service center); - the sender (in case of non-delivery of the message to the addressee) can receive comprehensive information about the reason for the non-delivery of the message (the addressee is out of range, the addressee's phone is turned off, there is no free space left in the addressee's phone to receive the message, etc.); - the addressee (in case of overflow of the incoming message buffer in the phone's memory) can see which sender is trying to deliver the message to him;

According to the principle of transmission of short text messages between two phones, both subscribers must have "Saia5M5 key" terminal devices. Another method has been invented, in which only one subscriber (sender) must have the "Saia5M5 key" device. The principle of text message delivery in this case is shown in Fig. 4 (Transmission of short text messages by the invented method using the device "bSaia5M5 key" and "Saia5M5 center"). Another device called "Saia5M5 center" was developed to implement this method of transmitting short text messages. Its task is to receive text messages from "SaiyazM5 key" devices of end users (senders) in the "fax and data transmission" mode and deliver received messages to recipients who do not have "SaiyazM5 key" devices in the usual standard way using the operator's short message service center , or through the Ipiegpei network. The structural diagram of the "SaiazM5 center" device is shown in Fig. 5 (the structural diagram of the invented device "SaiabM5 center"). The Yuaiab5mM5 center consists of a communication unit with the receiving mobile phone, a communication unit with the transmitting mobile phone, a memory where the message queue is stored, and a control unit. Structurally, these units are made in the form of interconnected microprocessor chips that control all circuit nodes, static RAM, where messages and variables are stored, non-volatile memory, where the microprogram that controls the microprocessor is stored, and interface chips with telephones and computer

The dynamics of the work of the Yuaiab5M5 center looks as follows. The sender types a short text message on his cell phone using the phone's features, selects the addressee's number from the notebook, and stores the message in the phone's memory for outgoing messages. The specially designed "Saia5M5 key" device, which is connected to the service connector of a cell phone, scans the phone's memory at certain time intervals, reads the message saved by the sender and activates a call to the Baia5M5 number of the center using the ZM network service "fax and data transmission". baia5Mm5 center analyzes the calls coming to the receiving phone and, if they are caused by data transmission, automatically picks up the phone and, within a time not exceeding Zsec., receives a message from the sender's device and hangs up. The received message is analyzed and queued for sending.

If there are any messages in the queue to be sent, the OSaiazM5 center sends them in the usual standard way through the operator's service center using a transmitting cell phone, or transmits the message to a personal computer, from which, with the help of special software, the message is sent to the addressee via IPiegpei.

This method of transmission has one advantage over the standard method of transmission - the reduced cost of transmitting one text message, payment is made in just 2-3 seconds. connection, and one advantage over the method of transmitting a message directly from phone to phone - the addressee may not have a "Bbagazm5 key" device in order to receive messages.

The above properties were achieved thanks to the application of a radically new principle of exchanging short text messages between subscribers of cellular networks of the OZM standard, using the "fax and data transmission" service of the OZM networks.

Thus, a method was invented for the transmission of short text messages between cellular phones of the O5M standard without the participation of the short message service center, that is, directly from phone to phone using the ZM network service "fax and data transmission". For this purpose, to cellular phones that participate in sending and receiving text messages, specially developed devices called "Saia5M5 key" are connected through the phone's service connector. "SaiyazM5 key" devices are created on the basis of a microcontroller controlled by a firmware.

The invented method of sending short text messages increases the confidentiality of message transmission, increases the reliability of the communication channel and reduces the cost of message transmission, and also allows sending text messages in case of overload or malfunction of the short message service center of the C5M network operator. The above method of sending (receiving) short text messages can be used in all corporate networks, which will significantly improve the reliability and confidentiality of information transmission by avoiding dependence on the short message service center of the SZM network operator. When using the invented method of information transmission in security alarm systems, in which the O5M network is used to transmit information to the security control panel and the owner of the object, this method will allow duplicating messages by transmitting them using standard and invented methods, which will increase the reliability of the specified security systems many times over.

Another way of delivering a message from the sender to the addressee through a special device "SaiaZM5 center" was also invented, which receives a message from the sender using the service of the OZM network "fax and data transmission" and then sends it to the addressee in a standard way through the short message service center of the OZM network operator, thanks to which the "Saia5mmM5 key" device must be owned only by the sender of the message. This method allows the addressee to avoid installing the "Saia:MM5 key" device on the phone receiving the message, and reduces the cost of the message for the sender.

This invention has no analogues in the world.

First class: the center of the center of the center of the center

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Claims (2)

1. The method of transmitting short text messages between two cellular phones in cellular communication networks of the C5M standard, which differs in that the transmission of messages takes place without the participation of the service center of short messages of the C5M network operator, that is, directly from phone to phone, with the help of specially developed auxiliary "bagazm5 key" devices, which are implemented on the basis of a microcontroller controlled by a firmware, using the ZM network service "fax and data transmission". 2. The method according to claim 1, which differs in that the transmission of the message from the sender to the addressee takes place through a specially designed device "Saia5M5 center", which receives messages from the sender using the SZM network service "fax and data transmission" and sends the message to the addressee in a standard way via service center of short messages of the operator of the О5M network or via the Internet using a personal computer, and consists of a microprocessor that works under the control of a microprogram, operational and non-volatile memory and interface blocks with cellular phones and a personal computer.