TW541844B - Encrypted broadcast facility - Google Patents

Abstract

A broadcast system for communicating single or multiple encrypted broadcast messages in a telecommunications system (1) is provided, where the telecommunications system has at least one fixed terminal (2) for communication with one or more portable terminals (6). The broadcast system includes means for transmitting first messages from the or each fixed terminal (2) for reception by portable terminals (6) in the reception area of that fixed terminal, the first message including information that specifies a channel, selected for that fixed terminal, which will be used to convey an associated broadcast message. A control means is provided for causing the or each portable terminal to receive on the specified broadcast message channels. The transmitter means then transmits from the fixed terminal (2) the encrypted broadcast messages on the said specified broadcast channels for reception, decryption and reproduction of a broadcast message, such as an audio broadcast message, by the or each portable terminal (6). Different portable terminals (6) may receive different broadcast messages. The broadcast message channels are connectionless. A number of mechanisms for selecting and generating decryption keys are considered. The system is particularly but not essentially based on a modified form of the digital enhanced telecommunications (DECT) standard.

Description

Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 541844 V. Description of Invention (1): Invention of the broadcast on the telecommunication system of the telecom terminal information! d hand ~ multiple pairs of wireless portable terminals-so-called, special u systems and methods. The system is specific but only based on digitally enhanced telecommunications standards. Depending on the needs and capabilities of a particular system, it is known to provide telecommunications systems that include most types of red-jin frequency broadcast equipment. The broadcast message is then received by the user of the plural system. In the Japanese Patent Application No. ^ 5_48684 English Abstract of the Invention ', a basic system is disclosed in. The invention summary of the invention is about a radiotelephone group with a telephone control group, a hammer supply, a French recorded section, a radio (transmission) unit, and an antenna. The plurality of slave systems provide an antenna, a radio section, an amplifier, and an antenna. You can then send the recorded voice message from the control group to the group. ^ Configurations, if each slave system only provides a single receiver (radio part), then the system can require the receiver part to support not only broadcast reception, but also support the normal telephone and telecommunications fork of the corresponding control group. . If a slave group is already being used to implement a call switch, the problem will rise. When trying to deliver a broadcast to a particular subgroup, the system can go through further problems. In the fm system, a plurality of terminals are provided—one of the audio broadcasting equipment = the law is directed to a base station, or most other types of control orders ^ * sigh—the telecommunications connection is in each of the plurality of devices known in the system That is, this type of connection is used to carry voice or data. Then, the Jinjin message is prepared to be carried ~~ Normal phone-4 This paper size is applicable to Tiiii5TCNS) A4 size x 297 public --- --------- install -------- order --------- line (please read the precautions on the back before filling this page)

Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. Converted Voice Signals} From Gate 1 to the same device, broadcast simultaneously on each connection. Because the horse needs I ^ "field /, mother ,,, and terminal to establish a peer-to-peer connection at the same time, if not: can not be-identified last name α, 4, ', " time for a limited number of terminals, provide The resources are enough to build the _Cuihong ^ ^ heart of the JL call…, # ,,, and death requirements, which can be configured in large numbers. By setting up individual individual broadcasts—> and one—for each of the plural calls, whenever the broadcast is attempted to the parent terminal (or Mody, (^ ,, ·; part of the total number of Saki machines I) Completing a broadcast, although this will cause delays such as I, Mao Yue, etc., it can alleviate the problem to some extent. In some cases and φ ^ 杳 安 · + ^ A W wood, especially if the terminal is used The robot operator relies slightly on the timing of broadcast reception, which is unacceptable. It is known that in telecommunication systems that use portable wires to connect portable terminals, an attempt is made to establish such telecommunication calls for a large number of portable terminals at the same time in order to provide a wide broadcast ( (E.g., voice broadcasting), which is even more difficult. This is particularly because the limited number of channels that can be handled by a single base station and the total number of radio frequency spectrums that have been used by k telecommunication systems have been configured. A DECT-related telecommunication system (DECT is an abbreviation for Digital Enhanced Wireless Telecommunications). The DECT system is described in most parts of the standard EM 175 I. This standard is based on the European Telecommunication Standard Erbu 'and its references are incorporated here by reference. 1' Each of the agreements mentioned above has no precautionary measures to prevent reception—authorized entities and interference with broadcasts—a problem that arises when security is critical. An object of the present invention is to provide a system for broadcasting a coded message such as an audio message or a data file on a telecommunication system that provides a plurality of portable terminals for receiving and broadcasting information. &Quot; Borrowing system 3〇 〇 Will not produce stone! If%, -------- Order -------- line ------- (Please read the precautions on the back before filling this page) -5- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 541844 A7 V. Description of the invention (3) Another object of the present invention is to allow a plurality of portable terminals to receive coded broadcast messages. On a telecommunication system, when the effective use of system resources is completed at the same time, a system for broadcasting of coded messages or data files is provided. In accordance with a first aspect of the present invention, it provides a system To target a wireless telecommunication Communication in the system is a broadcast message. The telecommunications system is designed to communicate with one or more portable terminals on one to an interface, and has at least one fixed terminal. The broadcast system includes: for transmitting a first from a fixed terminal The first transmitter device of the message, the message contains the selection for the fixed terminal, refers to the information of a channel to transmit the broadcast message; the control device responding to the first message, for indicating at least one pain-band terminal Receiving on the selected channel; a broadcast message encoding device for encoding the broadcast message; and a second transmitter device for transmitting from a fixed terminal on a selected channel in an encoded format for transmission by a minimum A portable terminal receives and decodes one of the broadcast messages. The broadcast message is roughly an audio or data building type message. The first and second transmitter devices can be incorporated into a fixed terminal. Of course, the first and second transmitter devices may be the same entity. The first and second transmitter devices may be the same system component. The control device may be arranged in a portable terminal. Each of the first and second transmitter devices and the control device may be an application or the like, and items related to hardware are not required. As the message was broadcast as an unconnected signal, no separate call was set for each portable terminal, and therefore did not exceed the limits of the system, • 6-This paper size applies the Chinese National Standard (CNS) A4 specification ( 210 X 297 mm) (Please read the phonetic on the back? Matters before filling in this F) Order ---------_ Printed by the Intellectual Property Bureau Employee Consumer Cooperatives of the Ministry of Economy 541844 A7

Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs may be sufficient to transmit to multiple portable terminals. In the case of portable terminals used by security personnel or medical workers, this is a special feature of broadcasting equipment, which is important for the rapid and sufficient simultaneous broadcasting of personnel signals. 3 ^ ❹-transporter device should preferably include a page number device, in order to produce the page-message page number information, the detailed description is a broadcast pre-dagger: identification of the belt terminal, _ system # f <take one less refers to J k The control system also has 6 places on this page? Therefore, only those who have Xi Xi Jing Di M 嫱 啕 ^ should be used as "ru Shi", "'machine minus different band-type terminal, select the right channel Receive the encoded broadcast message on it. The information is directed to the designated portable terminal. Hg Don't pair the 1-belt terminal of the type specified by the page number device · The knife is equipped with a portable terminal, the broadcast system is also w Provide a distribution device. Therefore, the eighth-order slave of the warrior ^ ^ J ^ ^ ..., the essence of this is by assigning a majority of a portable terminal corresponding to a /, the same identification, all such terminal systems can be included in the first The m_ common identification guide in a message page number information to receive a broadcast. A better broadcast system uses a designated coding routine and a coding key to encode using a broadcast message encoding device, so that the- In the range of decoding keys, only portable terminals are available. Decode the received encoded broadcast message. A broadcast message can provide an identification symbol that is included in the first message. In this case, a portable terminal system can use the special symbol to receive an encoded broadcast message. To choose—appropriate decoding routine and, or decoding key 値. If the wireless telecommunications system is a DECT basic telecommunications system, the paper standard is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297). ---- ---------------- ^ --------- ^. (Please read the notes on the back before filling out this page)-Bu 541844 Employees ’Consumption of Intellectual Property, Ministry of Economic Affairs Cooperative printed A7 B7 V. Description of the invention (5) The distribution device corresponds to a portable terminal identification which is one of the temporary portable user identification (TPUI), and a portable terminal can be selectively allocated. If the telecommunication system is based on The DECT standard, or a modified format of the DECT standard, specifies that the broadcast channel can be a DECT physical channel, and then it can use it to support a DECT single vehicle. It can use the designated channel to support a non-connected downlink connection. As the application has acknowledged 'in a DECT-associated system, this has particular advantages because for disconnected communications, although these disconnected communications are usually only used to carry system information and other control information, the DECT standard system It is allowed to set the carrying part from the radio fixed part of the fixed terminal 1. According to a second aspect associated with the present invention, it is used in an air interface, where there is at least one fixed terminal for carrying with one or more In a wireless telecommunication system, which is a type of terminal communication, a method for communicating a broadcast message is provided. The method includes the following steps: transmitting a first message from a fixed terminal, the message including detailed instructions for the fixed terminal, selecting One channel of information to transmit the broadcast message; at least one portable terminal receives on the selected channel; encodes the broadcast message; and provides for receiving and decoding by at least one portable terminal from the fixed channel on the selected channel The terminal transmits a broadcast message in an encoded format. '' In most cases, broadcast messages can be created to allow a majority of the broadcast messages to be repeated at least partially. This type of broadcast can allow most bits of information to be broadcast to multiple wireless portable terminals.夂 According to still another aspect of the present invention, it provides a communication device equipment having one of the technical characteristics of the first transmitter device in a broadcasting system. -------------------- Order --------- line (Please read the precautions on the back before filling this page) -8-

541844 A7

The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs prints another aspect of the present invention, which is a control device that controls, controls, and / or supplies a broadcast device. The present invention is related to another persuasion, the second value ... that is, the point of view, which is provided for communication devices and equipment that has one of the technical characteristics of the broadcast information system, transmission, and backup. :: Invention related to another step of view, It provides a communication device equipment with one of the technical characteristics of broadcast messages, editing, and daggers. According to another aspect related to the present invention, it provides a receiver with the ability to receive and decode a broadcast so that the portable terminal can be used One of the technical characteristics of the communication system that comes with the broadcasting system is the communication device equipment. Its characteristics and selected characteristics of this month are listed in the scope of the attached patent application. 'It will now be used as a reference and its disclosure is also incorporated herein as a reference. The present invention will be described with reference to the accompanying drawings, in which: FIG. 1 discloses a schematic diagram including a representative of a telecommunication system of the present invention; FIG. 2 discloses an encoding / decoding place; SUMMARY one; and FIG 3 discloses a simplified schematic assembly adapted to generate a coding system of one of the key Zhi.

The specific communication system shown in FIG. 1 is based on a DECT-associated cellular communication system i, in which a fixed terminal obtains a plurality of endpoints contained in a table of the DECT radio fixed section (RFP'S) 3, one of the DECT fixed sections. (FP) 2 table, which shows three of these RFP's 3a, 3b, 3 c ° Although this system is a DECT-related system, this system provides different features that occur outside the scope of the current DECT basic standards . This characteristic will be emphasized where appropriate for the purpose of understanding the present invention. When other methods are specified, specific characteristics discussed should be obtained to indicate normality. 9- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ------------ install -------- order --------- ^ __ w (Please read the precautions on the back before filling this page ) 541844

V. Description of the invention (7) When DECT function is referenced, "DECT is associated" or "DECT". RFP's 3 is connected together. Ρρ 2 can be connected to an external electrical network ′ such as a public switched telephone network 4 through an interface, but it is optional. F P also includes a control unit 5 which is used to control the general operation of the entire system including RFP's j interoperable internally. The control unit $ can also provide an isolated automated index exchange (PABX) function. Although most RFP's 3 are used to compose a multicellular system, it is possible to use only one of the RFp 3 single cell systems. In a DECT-associated system, a portable terminal obtains a form of a carrying part (PP) 6 which can establish communication with a fixed part by establishing a wireless connection with an RFP 3a, 3b, 3c. As is well known to those skilled in the art, this allows the exchange of telecommunications such as voice or data. Although the department shows twelve pp &quot; s, the department can use other numbers. The wireless connection communication between an RFP and a PP is established by one or more DECT physical channels (channels), which is called a vehicle. Each channel is established by transmitting in a continuous time multi-directional proximity (TDMA) frame on a specific classical line electrical frequency (RF) over a specific slot. As explained above, a DECT communication system can provide 1117? 3 or most RFP's 3. Obviously, if the system has only one rfp 3, then this RFP must provide all connections for establishing with pp's 6. However, in the case where a system has plural RFP's 3 (as is the case for the system illustrated in Figure 1), the connection is established between RFP's 3 and PP's 6 depending on the available connection quality, which is usually The consideration is not that a connection is always established between PP 6 and the most recent RFP 3. Before PP 6 can be added to the fixed system telecommunications communication, it must obtain -10-This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page) Binding --------- line. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 541844 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 _ B7 V. Description of the invention (8) It is one of the FP 2 One case of RFP 3 synchronization. In a DECT system, this is possible because each RFP 3 maintains the transmission of information that carries the identification of a particular 3 and the FP 2 that is connected with other system information. Because each RFP 3 series always transmits this, a pp 6 series can be received in turn on each DECT system channel and used for activity monitoring on those channels. As understood by those skilled in the art, this transmission information is referred to as N-channel and Q-channel. For the purpose of clarification, it should be mentioned that DECT N and DECT Q channels are logical channels, not DECT physical channels. Because detecting any approaching RFP's 3 is a valuable task of PP 6, when a PP 6 is activated, it starts listening on each DECT channel for N and Q channels broadcast via RFP's 3. If a given rfp 3 system does not involve supporting a telecommunication connection corresponding to a PP, then this information is broadcast on a so-called virtual vehicle. If a given RFP 3 involves supporting one or more telecommunications connections corresponding to one or more pp, s 6 'RFP 3 broadcasts this information on each telecommunication vehicle. An RFP 3 supports at least one telecommunication connection. If all electrical k connections corresponding to that RFp 3 are terminated, although they must be stored on the virtual N-channel and Q-channel broadcasts, the virtual vehicle can be discarded. In any case, an RFP 3 on at least one DECT channel will always transmit n-channel and Q-channel information. The virtual vehicle does not attempt to target reception by a particular PP 6, but only to complete RFP 3 identification and all nearby information available for any time in PP'S 6 in range. When starting a PP 6 at the beginning, for a RFP 3 out of the range -11-1 x 297 mm) ------------ mp installation -------- Order --------- Line * (Please read the notes on the back before filling this page) 541844

Invention description (9) Now, it listens out by scanning through all valid channels of shame until it finds one in most activities. If RFp 3 has one or more of its = it does indeed support a voice or data call, Money will be found in what is called a telecommunications vehicle system that has been established between the RFp 3 and those PP's and system information. It needs to be synchronized with RFp 3 and is in one of the situations in which it is preparing to complete or receive a call In response to system information, this is sufficient to serve the PP 6. However, if the RFP 3 series does not support any voice or data calls, there will be no telecommunications vehicle, and therefore the PP 6 dependency in the vicinity of RFP J is called a virtual carrier The tool is transmitted by RFP 3 on a legal DECT channel, so ??? 4 can be synchronized with this. PP 6 sets a synchronization vehicle on a variety of DECT channels to determine whether a close RFP is indeed related. Send on that channel. If this does not hold, a synchronization vehicle is set on a different DECT channel until it is found that it carries N channel and Q channel information. .Set up a synchronization vehicle to allow reading of any N and Q channel information on a DECT channel. This information is used by pp 6 to determine if it is correctly connected to the fixed part and if it is completed, the pp 6 Enter one of the situations where it is ready to complete and receive a call. A telecommunications vehicle, usually for voice or data communications, because it involves setting up a connection from one source to one or more destinations, transmitting data, and Finally, the three phases of the connection are released to operate in a connection-oriented mode. Conversely, a virtual vehicle operates in a disconnected mode because it involves the transfer of independent units of data from a source to one or more targets- 12- This paper size applies to Chinese National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page) | Install -------- Order ----- ---- Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 541844 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 V. Invention Description Tools, which are similar, virtual vehicles, except that whenever a virtual vehicle can only carry system shells, non-connected vehicles can carry other types of information. In these different transport Tn, a "< Further information is the last thought in the DECT standard mentioned above and will not be repeated here unless there is an understanding of the present invention. Because all types &lt; vehicles include feet? Besson, all in-range, and PP-s synchronized with -RFP, regardless of their current status (for example, connecting a voice call, or in an ideal case) in the table &lt; system information, received and close to the Information. DECT logic Another type of frequency transport is called p channel, which contains page numbers from RF p to p p. When the page number information is transmitted, it also appears on all vehicles. Therefore, it can receive any pp of N channel and Q channel information, and it can also receive any transmitted p channel information. Because all the synchronized PP's—just listen to any p channel information that is transmitted, the information carries ’on this channel to indicate that a particular p p is received on one of the channels. In order to broadcast a message to a specific PP, such as an audio message or one of the data files', that PP is the first one invited to receive on a specific DECT channel that will be used as a broadcast channel for carrying the broadcast information. Once p p is received on that channel, messages are transmitted on the channel for reception by that p p. By inviting plural DECT PP's to receive on that channel, then all those pp's will be able to receive the broadcast message. A non-connected downlink vehicle is set by each RF P on the broadcast channel, which may be different for each rf p. If they are -13 for this paper size, the Chinese National Standard (CNS) A4 specification (210 X 297 mm) is applied --------------- I --- ^ ----- I --- (Please read the precautions on the back before filling out this page) 541844 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs V. Description of the invention (11) Carry non-connection down-connection vehicles' Select on that RFp And the way: Listen, all the systems in the Yichuan area can receive broadcast news at the same time. As mentioned above, the non-reported JTP E7 transport reading vehicle is similar to a virtual vehicle, but in this case, the non-connected vehicle has a B that it fills in with information about the broadcast message itself. Field,% with will be understood by. Although the message can be included in this technology for a number of times ... &quot; Those already = μ 9 or data file information, other types (information can be broadcast, for example, information that represents an alarm signal. Note that this is an attempt to broadcast a message and relay it in Telecommunications carrier and the last two messages, the establishment of a PP within range-the concept of telecommunications vehicles ^ comparison.-DECT RFP group can only support-a limited number of electricity, vehicles, and Before use becomes necessary, an independent telecommunications vehicle can be established in a DECT system in any way. Because &amp;, for carrying broadcast messages, there is no inappropriate manned telecommunications system by using-unconnected vehicles. , Plural pp, s can receive the message. Appropriate for a given PP to indeed receive and copy the broadcast information, a first m containing tm's' is directed to each vehicle by each RFp on the second: as-short page The broadcast message for message transmission uses the DECT = 迢 <information. It uses the short page message transmitted on channel P to reduce the «DECT channel with broadcast message. It is known to those skilled in the art that 'short page messages are usually carried in column A. In fact, if a virtual vehicle uses-specific rfp to make band broadcast messages, it is best to convert the virtual vehicle horse- Non-connected and down-connected carriers, so for carrying virtual carriers -14 This paper size applies Chinese National Standard (CNS) A4 specification ⑵G χ 297) -------- ^ --------- ^ I (Please read the notes on the back before filling this page) 541844 A7 B7 V. Description of the invention (12) (Please read the notes on the back before filling this page) The tool requires the previously used DECT channel instead of one A non-connection down link vehicle is set on different dEC channels. A reason for the rise of this priority ’is that if a given R F P is transmitting only one virtual vehicle, any pp's synchronized with the RFP will be received on the channel carrying the virtual vehicle. This will generally avoid the need for a PP to receive on a different DECT channel. Now whenever the first broadcast message is transmitted, an example of providing a second broadcast message is obtained, and the second broadcast message is provided by setting a second disconnected down link vehicle from each RFP. For a given R F P, the second non-connected downlink vehicle will be on a DECT channel different from one of the first non-connected downlink vehicles. As one skilled in the art will appreciate, the B-stop of the second non-connected down-connect vehicle is filled with information about the second broadcast message itself. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs in order to actually receive and copy the second broadcast message for a given PP, which is one of the further examples of generating the first message, including telling PP, S, that the DECT channel is used for the second broadcast Information about the post. This further example of the first message is sent by each RFP as a short page message on all existing vehicles. As explained above, short page messages are transmitted on the P channel where they can appear, and are usually included in all vehicles, and are usually carried in column A. This causes all PPs to listen to short page messages that inform them of the existence of a broadcast. Then, a PP can be received on a DECT channel carrying a second non-connected vehicle, and therefore the second broadcast message to duplicate the second broadcast message. It is possible to provide further examples of broadcast messages in the same way as the second broadcast message, each broadcast -15- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) Intellectual property of the Ministry of Economic Affairs Printed by the Bureau ’s Consumer Cooperatives 541844 A7 _ B7 V. Description of Invention (13) The message has an associated first broadcast message. Because each broadcast message is done independently of each other, it is possible to provide simultaneous multi-directional broadcast messages in the system. Note that the second and further non-connected down-connect vehicles cannot be made one of these non-connected down-connections by converting the virtual vehicle because the virtual has usually been converted into the first non-connected down-connect vehicle 3 &quot; Simultaneously &quot; means that more than one broadcast message can be provided at the same time. Because each broadcast message is unrelated and independent of any other broadcast message, no broadcast message is synchronized with each other, or this requirement must be fulfilled at the same time. In the DECT telecommunication system described above, a device that provides a single broadcast message can conform to the current DECT standard. However, the previous description of a device that provides a second and further example of broadcasting messages simultaneously by adding a second and further non-connected down-link carrier, individually requires one of the current versions of the DECT basic standard. According to this standard, for each group of cells, there can be only one distance for non-connected messages to control the downlink service. As will be understood by those skilled in the art, Disconnected Message Control (CMC) involves the function of controlling and distributing information about all disconnected services to one more disconnected vehicle. Although each CMC allows a maximum amount of one of two disconnected vehicles. The second series only attempts to target channel hopping 'and the data is exactly the same on each vehicle. Therefore, the second and further broadcast calls carried on the second and further non-connected down link vehicles individually require the second and further examples of CMC. The appearance of the second and further examples of CMC does not affect the basic system of a DECT -16- This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 public reply) ------------ · -------- Order --------- line (please read the precautions on the back before filling out this page) 541844 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs (14) Normal operation. This means that it corresponds to the telecommunication system and may use an unmodified PP, although this PP will not be able to receive broadcast calls. Receiving a broadcast message for all PP4s is not always a requirement, and it may lead to the choice of receiving one of PP's or one of PP's to receive a given broadcast message. PP, s can specify an identification or group identification, and only those PP's carrying a specific identification can choose to receive a given broadcast. In a DECT system, for a carrying part or a group of carrying parts, a group of temporary carrying user identification (TPUI) can be designated. This can be done. In this way, only those PP's with a specific TPUI are invited to receive broadcast messages. In this system, more than one TPUI can be used. Therefore, for receiving a broadcast ', it is allowed to build iL and independently select p p's of different groups. TPUI related information is also present in the p channel, and is carried as a short page message. Once again, all PP's are able to receive this information. The use of known identification and addressing by those skilled in the art, and further information is included in the DECT standard. After this explanation, unless the article suggests other ways, a reference to a TPUI should be taken as a reference to a non-connected group τρυι. As those skilled in the art will appreciate, this is not an example of a situation where another TPUI will be a reference. The M A C layer information in the short page message contains the location of the disconnected vehicle, which is based on the time slot and frequency. This can be different for each RF P. The short page message can be generated from one of the applications in the RFP. In particular, the short hundred messages contain information appearing in the P channel; that is, the identification of PP's that should receive the broadcast message, and the DECT channel on which the broadcast is transmitted. Broadcast messages can be generated from anywhere in the system, and for example can be -17- (please read the precautions on the back before filling this page) The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 541844 A7 V. Description of the invention (15) (Please read the notes on the back before filling this page) Generated from PSTN or another PP. In the latter case, after broadcasting to other PP's by the device described above, the message is transmitted from the PP to a range of RFPs on a normal electric vehicle. In response to the broadcast: ^ Attempt to forward the appropriate TPUI information, the generation of broadcast messages can explain the group in detail. In one example, this can be generated by the user's instruction to try to receive information by typing information through the keyboard of the P P. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Each R F P ensures that the quality is maintained for each non-connected, downward-connected vehicle currently in use. If the channel quality is insufficient, the system can use the disconnected vehicle to jump to another DECT channel exchange. You can use the _short page message notification and PP's of the same as r F p + for new channels with non-connected vehicles. When the non-connected vehicle moves to a different channel, a new page is sent formally to notify all pp's in this range. In addition, for a given broadcast message, it is an associated non-connected downlink connection carrier, and for each RFP, it will not need to be tied to the same DECT channel, so by each RF P for the entire cycle of the broadcast message , Will formally send out a short page detailing the location of the non-connected down-connect vehicle and the broadcast call Tpui information. This will allow PP'S to roam in by targeting a given broadcast message on another DECT channel, which can be completely transmitted to a cell of a different RFP service that is not connected down, and if needed by receiving on that channel, Still receiving the broadcast message. It also allows _P P 'which is only activated during a broadcast to start receiving the broadcast. Disconnected vehicle transfer lines can also be performed in other ways, although this may meet DECT standards. Feel free to use most TPUI's, each with an assigned plural 値. Make -18 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 541844 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy The priority of the call can be set to a P p to receive or exclude a broadcast call. A given p p can have the majority of the identifications assigned to it. In addition, if the system guides a given PP to receive more than one broadcast message at the same time, the system can generate a signal by carrying part to warn the user to switch to a different broadcast. The user can be warned, for example, by an audio tone or a display message. In addition, if the broadcast message belongs to data, the last declaration in the carrying part can automatically switch to a different one of the broadcast calls. Each broadcast message can be assigned a plural number, depending on the number of messages, allowing the P P to report to the users of the child P P. In addition, p p can automatically switch to receive broadcast messages with the highest priority. A priority is for the indicated energy status, and it can be retained in any broadcast with this assigned priority to be received, and by carrying Shao points whether or not they already support a broadcast or normal connection basic call replication. Give enough P P can receive more than one broadcast message at the same time. For example, whenever an additional audio broadcast can be stored, this will allow an audio broadcast to be copied. Other combinations of receiving broadcasts include audio and data, and audio I video broadcasts. If p p has been used for a normal connection basic call, it can have most effects on that terminal-broadcast generation. For example, a signal can be generated by carrying a part to warn the user of the broadcast, allowing the user to switch to the broadcast or, t, see it. For example, the system can warn users with audio tones or display messages. If the user chooses to accept the broadcast, the system can arrange to hold the normal connection basic call. In addition, the part can be automatically switched to copy ttw ^ -------- Order --------- (Please read the precautions on the back before filling this page) -19-

Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 541844 A7 _______ B7 V. Description of Invention (17) Broadcasting, and may also arrange to maintain normal calls. Alternatively, the automatic switching ' may be performed so that it occurs only when an associated priority broadcast with a detailed description is broadcast. A PP system can provide means for copying an audio broadcast call with a system larger than that used during a normal connection basic call. For this purpose, a 'speaker' can be provided in the carrying section with a speaker which can be activated automatically. As explained above, the broadcast can be a representative of a warning signal. This broadcast can be activated by a pp user activation provided on one of the alarm functions on pp. The control unit sends a broadcast message to all RFPs, S, including the τρυι group, and the broadcast message is transmitted via RFp, s. Just after the p p has agreed, or after recording by location when the individual tpui is assigned, a broadcast group identification can be assigned to a p p system (in the example explained in detail, it is a TPUI'S group). In addition, because the system allows it to rearrange a p p into different groups at any time, the identification system can be assigned at any time. A P P can be a majority multidirectional group. Regarding the provision of single and multi-directional broadcast calls in a DECT basic telecommunications system, a device has now been described, and correspondingly with reference to Figs. 2 and 3, encoding-related operations will now be described. Corresponding to Fig. 2, when the broadcast message is transmitted from the fixed terminal, the signals are encoded by the broadcast message encoding device 11. The coding device uses a coding formula 12 and a coding key 値 i 3. An unencoded message 3 (one called "plaintext," message) is input to the encoding device 11 and the broadcast encoding device 11 operates on the unencoded message 30 to convert it into an encoded broadcast message 40 ( —Called the password information message.) This coded message 4 〇 is in the air -20- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ----------- Packing -------- Order --------- Line · (Please read the note on the back? Matters before filling out this page} 541844 Printed by A7, Consumer Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs Description of the invention (18) The interface broadcasts from the fixed terminal 3 to the portable terminal 6. Because it is a coded broadcast message, any illegal interception of the message will not allow easy decoding of the content of the message. If the broadcast message is received and Reply and copy the original text of the message in the code L. For those weighted-type terminals that are intended for the message, the broadcast message decoding equipment is provided. The decoding device 2m converts_receives the encoded message 40 to become the original unencoded message 3 〇, decoding device 2] requires a specific decoding formula 22 and The specific decoding key is illusory. The specific solution = constant ^^ and the specific decoding key 値 23 are associated with the encoding routine originally used to encode the broadcast message 2 and the encoding key 値 13. Only the correct decoding routine ^ and the correct one The decoding key 値 2 3 will allow the broadcast message decoding device 2 丨 to correctly decode the message. By providing a regular-appropriate format and a large number of decoding keys Μ, on a coded message, M processes a positive $ decoding for that M message. The conventional and correct decoding keys are very difficult to complete a successful decoding operation. With this device, -messages can correspond to cognitive broadcasts that will be easy to understand only by receiving them as desired. For the above mentioned For the encoding system to work effectively, a program is required to replace the correct decoding routine and the correct decoding key, and the broadcast signal is received from the (portable terminal). There are many possible ways ^ 处 ^ This Most of them will now be discussed, the first-ship condition mode, and the first one is a telecommunication system party based on a DECT-related telecommunication system. "-The mode is provided during manufacture-the portable terminal machine set : Code type and specific decoding key 另外 In addition-the method is to provide a portable terminal, which is usually fixed, if necessary, it can be used by the user, or-system manager-21-This paper size applies Chinese national standards ( CNS) A4 specification (210 X 297) (Please read the notes on the back before filling out this page) -----— II ^ »1 ---- I --- 丄 ο

V. Description of the invention (19) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs The modified specific decoding routines and routines go through a program list-^ In this case, the key 値 is sent to the portable terminal. Establishing a physical connection, it is possible to connect to the entity earlier, and there is no form farther than the bracket. In this case, it is important to provide a fixed terminal ::::. There are two types of decoding routines and specific decoding meanings: the belt terminal, including the special generation system can be used by the portable terminal = :, fixed "fixed terminal can be the advantages of this system include The system is transparent, so that the user == the user of the machine, the decoding mode and the keypad are hidden in the portable terminal ::: '2) Fresh code is often connected. The portable terminal can be equal to two. No: easy-to-navigate-identification symbols, allowing for built-in variants and key symbols, are the same identifiers selected by the IB number carrier system, and because A mothers have the same decoding formula and key, Can be a Canshi one that can decode the same code. *, ^ Enlargement provides a portable terminal, ::, and ,, the system I-, or by the user's plug-in, it can be taped. Self-coded routines and key pairs in the terminal. "Unification: two :::;: common choice, complex solution, excellent" name is% code key and decoded routines without re-programming, which can be in a fixed system Generated, and if-the portable terminal is obtained by _ Security issues. In the -DECT basic telecommunications system, this kind of routine and key system can be provided through pp, TPUI S, and SCK's / DCK's through-electronic connection (such as a _ link connection) to pp. Because the information is not transmitted through the air interface, this beneficiary contributes to the security of the system. In addition, a portable terminal is provided, and one or more standard decoders are often used.-22- This paper standard applies to China National Standard (CNS) A4 Specifications (210 X 297 mm) 11 ^ ----— II — f Please read the notes on the back before filling this page) 541844

V. Description of the invention (20) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, but using individual coding keys on fixed-foot terminals and associated decoding keys on portable terminals, individual keys are not allowed. exchange. The broadcast message is considered to be included in the or each portable terminal, and the decoding routine and key code for the broadcast message are desired. The keypad can be generated by the user of the portable terminal, or can be generated from information input by the user of the portable terminal. When the system only needs to notify the user of the new keypad (through a secure channel), or needs information to generate a new keypad, that is, when the correct decoding is needed, the keypads can be exchanged. In most cases, the need for the t key can be generated from a combination of information entered by the user and the information associated with the portable terminal itself, such as a device serial number. The information inputted by the user can allow the user to receive broadcast information for its convenience, without the need for a periodic storage of the input information each time a broadcast is generated. In a DECT basic telecommunications system, as will be understood by those skilled in the art, a received encoded broadcast message can be decoded using a key bit stream generator along with a scrambled key (sc κ) table. Keypad decoding. SCK itself can be input by the user carried by DECT, or it can be generated from the information input by the user, so it is allowed to attenuate the sum by inputting one of the I information. SCK can be generated from, for example, HPUI (International Mobile User Identification), or 1]? £ 1 (International Mobile Device Identification), and a combination of information entered by the user. Because knowing that only the information entered by the user will not allow the generation of the required sck 'provides the advantage of allowing coded broadcast security to be increased at the same time, and has the advantage of entering less user information. One of the disadvantages of the latter system is that every -23- this paper size applies to the Chinese National Standard (CNS) A4 specification (210 x 297 mm) ------------ install ------- -订 — 丨 丨 丨 —— (Please read the notes on the back before filling in this page}

V. Description of the invention (a) A mobile terminal printed by a member of the Intellectual Property Bureau of the Ministry of Economic Affairs and a consumer cooperative will have-different IPEI & IPUI, resulting in the generation of different SCK, s in each portable terminal, encoding group broadcast Department cannot be completed. In addition, each portable terminal is provided with one or more optional decoding routines, and internally generated decoding keys 値. In this case, the entry system requires two pairs of portable terminals to generate one of the broadcasts suitable for receiving by the decoding system. The same as i ′, it is necessary to use a code, 値 and ^ for the fixed terminal. In this way, the broadcast coded message can be decoded by the or each suitable terminal. ㈣ 一 #Determining a portable terminal, by referring to the instructions on the fixed-foot terminal to generate a specific decoding key 値, a strong and secure broadcast information system is possible. In addition, if a portable terminal The system can be commanded on a non-secure channel by a fixed terminal, without jeopardizing the security. The system is also convenient to use 0. This is a DECT basic telecommunication system, which can be regarded as targeting a carrying part. One of the processes of certification is expanded. With reference to FIG. 3, a dect fixed terminal (fixed part, FP) can prove a dECT portable terminal (portable part, pp) to establish that it is what it claims_ One of them carries a part. The certification involves the use of a cryptographic request response device, in which FP requests a p P to perform a calculation, and a result appears. F p also performs the same ten calculations and 1 does not match the results generated by PP The FP accepts the result of the FP, and the FP accepts the PP as the system. It indicates that the result generated by the pp is regarded as “RE S 1”, which is generated by the proof processing a 1 丨 and a 1 2. About the disadvantages Management input system "κ ,,, a proof key 値 ,,, Rs &quot;, used to establish proof of this paper size_ 中 _ 家 标准 (CNS) A4 Specification ⑽χ ^ Order --------- ^^ 9. (Please read the precautions on the back before filling this page) -24- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 541844 A7 _ B7 V. Description of the invention (22) One of the working hours key 値, and &quot; RAND F &quot;, a random 値. R S and RAND F 値 are released by FP and PP broadcast on the air interface. They provide FP correspondence certificate processing A 1 1, A 1 2. Because FP understands the system of κ For its attempt to prove 眞 PP, and also understand RS and RAND F, FP can calculate the expected RES1 locally. PP calculates RES1 値 and transmits it back to FP on the air interface, and if the 値 meets the local calculation 値This indicates that PP is 眞. This process allows PP to prove that it did not reveal the knowledge of 値 in the air, K's correct 値. The other product that proves to handle A 1 1, A 1 2 is called Get Password Key (DCK) A new DCK is generated on every generated certificate. A certificate is generated at the beginning of a call, but For help at any time during a call. When a DECT PP receives a coded broadcast call, as explained above, this can be decoded using a key bitstream generator with the correct DCc instead of SCK. Most PP's By ensuring that each PP performs the same proof processing All, A12 with the same K, RS, and RAND F, it can provide the same dCK. If each PP's of this quantity provides the same DCK, this means that by these pp, s The system can receive and decode a group call. In order to maintain the security of the broadcast, κ is processed from the certification key 値 B1 and generated from the certification password AC. Prove password Enter by PP user. Provide a carry for the corresponding decoding routine and decoding key pair. Regardless of which method is selected, each portable terminal system can handle plural pairs. In addition, regardless of whether the routine and / or key is selected automatically by an application in a portable terminal, or selected or entered by a user, it is possible to ----------- install --- ----- Order &quot; —_ 丨 丨 —line (please read the precautions on the back before filling this page) 25- 541844 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of Invention (23), It is to provide the correct demand for a specific broadcast message, especially for the emergence of evening broadcasts, or for proximity, broadcasts require different priorities. Because of this, each broadcast message carries an identification that allows the correct pair to be selected and used on it. For example, at a basic level, a portable terminal can indicate in a frame—entering a broadcast message carrying an identification number 丄. The user will enter &gt; Wang Yi this information, and enter the correct solution for the message carrying this identification number. Ma Jian 値 The user is not authorized to receive the message carrying this identification number, and will not provide the correct decoding key 値. In one system, it is not welcome for users to insert. In a portable terminal, an application will pay attention to the message identification number and automatically provide the correct decoding key. A portable terminal is not authorized to receive messages carrying this identification number and will not provide the correct decoding key 値. The system can also use the identification number to indicate or select an appropriate decoding routine. In the DECT basic coding broadcast system, this type of broadcast message identification symbol can be carried in the first message together with the group Tpm information. The way Yin has been implemented is through the use of the information component of "carry identification". During the page number ', this component is usually used to transmit DECT carry identification. For the carry identification, the octet 3 of the component is used to indicate the identification type code. When the octet 3 indicates that the identification system is a temporary carrying user identification (τρυι), the 'TTP U I' system is included in the octets 5, 6, and 7. However, bits 8, 7, 6, and 5 of octet 5 are always set to zero. Therefore, in this information, these bits are used to indicate the identification of the broadcast message, and because four bits are available, one of the largest amounts of different broadcast messages can be identified, although this is not intended to limit the scope of the invention Instructions. In order to provide a broadcast message identification, the use of these bits can reasonably deviate from the DECT basic standard-26- This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) --------- --------- (Please read the precautions on the back before filling this page) Order --------- ^ 541541 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Invention Note (24) for guidance. In systems such as a DECT basic telecommunications system, this identification information can be particularly valuable. A different group of TPUIs can be assigned to a PP as it roams from one cell to another. Through the use of broadcast identification, a PP can roam into another cell and continue to receive and decode a broadcast message regardless of whether a different PP UI is used. This is because the broadcast identification can be used by the PP to determine which broadcast message it is receiving, and therefore which decoding key and routine is used. Although they can provide one of the lower standards of security, they can take advantage of other methods that provide a portable terminal decoding keypad and routine. For example, the decoding key 値 may be the function of the T P UI itself, the function of the group T P UI, a key 广播 broadcast in the first message, or a key 値 according to the user certification key 値. Those skilled in the art will appreciate that most of these technologies will be more suitable for broadcasting to individual portable terminals rather than groups of terminals and vice versa. A D c K may be associated with a group τ p u I. Of course, a P P can handle most DCK's associated with many groups tpuI, s. In a particular example, if a second group call is in the process of being set up 'Every time a first group of calls is in the process of being received by a pp, the PP receives a short page message, The calling user is notified, and the user decides whether to listen to the second call. If the user decides to listen, a D c K associated group call is loaded with a coding routine, and the maC is set to listen to the correct slot and frequency of the second disconnected vehicle. Then, the received block B data is decoded. In order to inform a portable terminal that a broadcast message is encoded as 'Non-Link-27', this paper is compliant with Chinese National Standard (CNS) A4 specifications (210 X 297 (please read the precautions on the back before filling this page) | Install -------- Order --------- line {541844 A7 B7 V. Description of Invention (25) Receive broadcast messages can carry marked messages as information being encoded. If the broadcast system is According to a DECT telecommunication system, it can be grayed out by periodically transmitting a MAC control code on a carrier. This invention can be completed. The present invention relates to a broadcasting device commonly applied by us. &quot;, υκ patent application number GB9920325 and "multidirectional broadcasting equipment" number 〇992〇324. Whenever the present invention refers to a DECT associated telecommunication system to perform modifications in most details, 'note that the present invention can The single or multi-directional example of communication is implemented in other systems. In this case, the portable terminal is directed to receive the message using a form of addressing that is different from DECT TPUI addressing. That is, the destination of the call listens It is defined by a group identification 'for each portable terminal, which is programmable. The details of the encoding device may be different from those described above with reference to a DECT basic system. From reading this article, you can know that you are familiar with the technology The person will be aware of other modifications that may involve the use of design, manufacturing, and systems, as well as related devices and components, and which may be used in place of, or added to, features already described herein, which are known Other characteristics. (Please read the precautions on the back before filling this page.) ---- Order --------- Line 'Printed by the Intellectual Property Bureau Staff Consumer Cooperatives of the Ministry of Economics-28-This paper size applies China National Standard (CNS) A4 specification (21 × 297 mm)

Claims (1)

541844 A8 B8 C8 D8 Patent application scope 1. A broadcasting system, which is used in wireless telecommunication system (1) for communication-broadcasting 1 1 message 'The telecommunication system has at least one fixed terminal (2), using 1 1 I To communicate with one or more portable terminals (6) on the i interface, please call 1 1 | first. The broadcast system includes: Read 1 | The first transmission device for transmission from the fixed terminal (2). A 1st message back &amp; 1 1 message, the message contains the attention to the fixed terminal selection, specify a channel of attention 1 1 1 information 'to convert the broadcast message; item 1 1 control device, respond to the first message for guidance At least one portable final refill | write # install 1 terminal to receive 9 pages on the selected channel ο / / 、, tear, Guangta messages; and a second transmission set for the fixed terminal (2) On the selected channel, a broadcast message is transmitted for the encoding table mode received and decoded by at least one portable terminal (6). Line 2. Yishen #patent | &amp; broadcasting system of item i, in which the first transmission device includes a page number device to generate and include in the page information of the message, which means that it is the least number of The control device of the identification of the portable terminal also responds to the page number information, so there is only one portable terminal (6) with the identification of the portable terminal (6), which will guide to receive the coded broadcast message on the selected channel . 3. For example, the broadcasting system of the scope of the patent application further includes a distribution device corresponding to a type of portable terminal identification suitable for the type designated by the page number device for selective distribution-the portable terminal (6). 4. As claimed, the broadcasting system in item 2 of the patent scope further includes a portable terminal identification corresponding to the type specified by the page number device, -29-this paper size Gu Fang Jia Xian (CNS) A4 €格 ⑵〇X 观 公 爱) 541844 A8 B8 C8 D8 Six distribution devices printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs and applying for patents for selective distribution of a portable terminal (6). 5. If the broadcasting system of item 1 or 2 of the patent application scope further includes a message decoding (2 1) device in at least one portable terminal, the message decoding device uses a decoding routine (2 2) and a decoding key 値(twenty three ). 6. The broadcasting system according to item 5 of the scope of patent application, further comprising a device for adding a decoding routine and / or a decoding key to the decoding device (2 1). 7. For the broadcasting system under the scope of patent application, one of the broadcasting messages is encoded by a broadcasting message encoding device (丨 丨) using a designated encoding formula (丨 2) and an encoding key 値 (1 3). Only the portable terminal has an associated decoding routine (2 2) and a decoding key 値 (2 3), which can decode the received encoded broadcast message. 8. The broadcasting system according to item 1 of the patent application scope, wherein the broadcast message has a message identification symbol, and the identification symbol is included in the first message by the first transmitter device. 9. If the broadcasting system of item 1 of the patent application scope further includes a message decoding device in at least one portable terminal, the message decoding device applies a decoding routine and a decoding key, wherein the broadcasting message has a message identification symbol, identifying The symbol is included in the first message by the first transmitter device, and wherein the decoding device is responsive to the message identification symbol to select a decoding routine and / or a decoding key. 10. The broadcasting system according to any one of the scope of patent application, wherein the wireless telecommunication system (1) is a DECT basic telecommunication system, and the broadcast information channel is not connected. 11. · If you apply for the broadcasting system of item 2 or 3 of the patent scope, among which the wireless telecommunication-30 paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 public love) (Please read the precautions on the back before filling this Page)-installed -------- order --------- line one 541844 A8 B8 C8 D8 patent application scope system is a DECT basic telecommunications system and broadcast information channels are not connected, and the least of them The portable terminal identification of a portable terminal (please read the notes on the back before filling this page). The symbol is assigned or assigned individually using a temporary portable user identification (TPUI). 12. The broadcasting system according to item 1 of the patent application scope, wherein the broadcast message has a message identification symbol, and the message identification symbol is included in the first message by the first transmitter device, wherein the wireless telecommunication system is a DECT basic telecommunication system 'And the identification symbol is one of the transmissions in the "carrying identification" information component, and when octet 3 indicates that the identification symbol type encoding is a temporary portable user identification (TpiJI), it is configured in octet 5 Bits 8, 7, 6 and 5. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 13. If the broadcasting system under the scope of patent application No. 1 further includes a message decoding device in at least one portable terminal, the message decoding device applies a decoding routine and a decoding key. Wherein the broadcast message has a message identification symbol 'the message identification symbol is included in the first message by the first transmitter device' and wherein the decoding device responds to the message identification symbol to select a decoding routine and / or a decoding key 値, The wireless telecommunications system is a DECT basic telecommunication system and the broadcast message channel is not connected, and the identification symbol is transmitted in the information component of the "carrying identification", and when the octet 3 refers to the non-identifying payment number type The encoding is a temporary tape user identification (TPUI), which is configured in bits 8, 7, 6, and 5 0 of octet 5. 14. If the broadcasting system of the first scope of the patent application is applied, go further Distribution device, identified by a portable terminal with one of the page number device types, -31-This paper size applies to China National Standard (CNS) A4 (21〇X 297 mm) 541844 Printed by A8, B8, C8, Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ~ --- ~ ^ The scope of the application for patents is for 1% selective allocation. In the band terminal, the decoding device uses a decoding routine and a key-resolving method, and the decoding key is obtained from the identification of the terminal terminal. ^ Wanfa, for at least- The fixed terminal (2) communicates with-or more tape-type terminals (6) on an air interface-communication in the wireless telecommunication system-broadcast messages, the method includes the following steps: From the fixed terminal Machine (2) sends a first message, the message contains information for the fixed-foot terminal selection, specifying the _ channel to exchange broadcast messages; directing at least one portable terminal (6) to receive on the selected channel; Encode the broadcast message; and ... transmit a broadcast message in the form of an encoded form received and decoded from the fixed terminal (6). 16. If the method of the scope of patent application No. 15 further includes the following steps: generate and include in the first Information In the page information, it is specified that it is the identification of at least one portable terminal desired for broadcasting, so that only one portable terminal (6) with the specified portable terminal identification will be guided to receive the coded broadcast on the selected channel 17. According to the method of item i 6 of the scope of patent application, the step further includes the step of using a portable terminal (6) corresponding to a portable terminal identification &quot;. -32- This paper standard applies to Chinese national standards (CNS) A4 specifications (210 X 297 ^ love) '* ---- #pack ----- order --------- line · (Please read the precautions on the back before filling this page)