CN1043116C - Two-way literal mobile communication system - Google Patents
Two-way literal mobile communication system Download PDFInfo
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- CN1043116C CN1043116C CN95105336A CN95105336A CN1043116C CN 1043116 C CN1043116 C CN 1043116C CN 95105336 A CN95105336 A CN 95105336A CN 95105336 A CN95105336 A CN 95105336A CN 1043116 C CN1043116 C CN 1043116C
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Abstract
The present invention relates to a bidirectional literal mobile communication system which comprises at least one central device, at least one relay device and a large quantity of user terminals, wherein every central device and relay device are provided with respective feature codes, and every user terminal is provided with respective identification codes. The feature codes and the identification codes are sent out together with literal information in the process of realizing literal information transmission among the user terminals. The system can reach the purpose of quickly carrying out bidirectional literal information transmission on the premise of occupying fewer frequency resources.
Description
The present invention relates to a kind of two-way literal mobile communcations system, specifically, the present invention relates to a kind of serial data code signal double-direction radio the multi-user's and have a nationwide midsequent transmission system.
The present numeral of being used widely, literal pager system are unidirectional radio multi-user serial data transmission systems, and this system has at least one central means and a plurality of receiver user independent of each other.Said system can only be transmitted data by uniaxially, and promptly receiver user can not inform whether received paging information, and the user also must answer paging information by phone or other modes.Therefore, above-mentioned pager system can not satisfy the needs that carry out information interchange rapidly.
The appearance of mobile phone has overcome the existing deficiency of pager system, but has meanwhile also brought new problem.We know that the frequency of mobile communication (section) is limited as a kind of resource, and what mobile telephone system was transmitted is voice signal, and the transmission of Word message is digital, and the transmission speed of digital signal is that the transmission of voice signal is incomparable.Finish the transmission of identical information amount, the literal transmission means is tens million of times of voice transfer mode.And at some in particular cases, written historical materials can be used as tangible foundation.Under the condition of the transmission of finishing the identical information amount, the identical percent of call lost, the literal transmission means is from user capacity, occupy aspects such as channel quantity and all be voice mode hundreds of times, limited frequency resource can be fully used.
Based on above-mentioned prior art, the purpose of this invention is to provide a kind of two-way literal mobile communcations system, this system has overcome the weak point of above-mentioned pager system and mobile telephone system, can carry out rapidly under the prerequisite of two-way literal communicating requirement satisfied, reaches the purpose of saving frequency resource.
The objective of the invention is to constitute and realize by following system.
A kind of two-way literal mobile communcations system comprises central means, relay and customer mobile terminal (MS), user terminal, at least one central means that wherein has condition code links to each other with the customer mobile terminal with each self-demarking code with at least one relay with condition code respectively.This connection is meant by wired, wireless or satellite communication and links to each other.At least one user terminal links to each other with Public Switched Telephone Network.This system adopts single-channel mode, and a frequency is respectively used in up-downgoing.Relay and customer mobile terminal all are connected to antenna.
A kind of means of communication of two-way literal mobile communcations system:
Use customer mobile terminal equipment to send from the customer mobile terminal originating party and have self identification code and the information that receives identification code and Word message address code, this information is the Word message that edits of originating party or by central means editor's written historical materials, this information is delivered to central means after receiving processing by relay, and central means is launched by relay through queuing and after handling.The method that wherein adopts single-channel mode is that a frequency is respectively used in up-downgoing, the receiving unit of customer mobile terminal adopts the digital information of fixed frequency reception from relay, radiating portion adopts the fixed frequency emission, and controls its emission by the accessibility signal that relay sends.
A kind of two-way literal mobile communcations system comprises relay, central means and customer mobile terminal (MS), user terminal, at least one central means that wherein has condition code links to each other with the customer mobile terminal with each self-demarking code with at least one the many receive channels relay with condition code respectively, and described connection refers to connect by wired, wireless or satellite channel.At least one user terminal links to each other with Public Switched Telephone Network.Up employing multifrequency point, following behavior single-frequency point, customer mobile terminal and relay all are connected to antenna.
A kind of means of communication of two-way literal mobile communcations system:
Use customer mobile terminal equipment to send from the customer mobile terminal originating party and have self identification code and the information that receives identification code and Word message address code, this information is the Word message that edits of originating party or by central means editor's written historical materials, after this information receives processing by relay, deliver to central means, central means is through queuing and handle the back and launch by relay, being connected between central means and the relay is meant by wired, wireless or satellite channel is continuous.To realize customer mobile terminal moving between two relays.The single frequency of wherein descending employing, up employing multifrequency point, be that each relay all has a signaling channel that is used to launch and a plurality of data channel that is used to receive, the receiving circuit of customer mobile terminal adopts frequency synthesis technique, signaling channel and the data transmission channel of this receiving circuit automatic scan in the relay controlled area.Radiating circuit also adopts frequency synthesis technique, and controls its tranmitting frequency by the signaling-information that relay sends.Realize that between customer mobile terminal condition code and identification code will automatically be sent with Word message in the Word message transmittance process.
A kind of two-way literal mobile communcations system comprises central means, relay, customer mobile terminal (MS), user terminal, also comprise middle armature assembly, Packet Switch Data Network, at least two central means that wherein have condition code link to each other with the customer mobile terminal with each self-demarking code with the relay of receive channel more than two with condition code respectively at least, and this connection is meant and links to each other by wired, wireless or satellite communication.At least two user terminals link to each other with Public Switched Telephone Network.Packet Switch Data Network links to each other with a middle armature assembly with two central means respectively at least, and each customer mobile terminal and relay all are connected to antenna.
A kind of means of communication of two-way literal mobile communcations system:
Use customer mobile terminal equipment to send from the customer mobile terminal originating party and have self identification code and the information that receives identification code and Word message address code, this information is the Word message that edits of originating party or by central means editor's written historical materials, this information is delivered to central means after receiving processing by relay, and central means is launched by relay through queuing and after handling.Wherein each central means can directly or indirectly link to each other with middle armature assembly by Packet Switch Data Network, being connected between central means and central means, central means are to link to each other by wired, wireless or satellite channel with being connected of middle armature assembly, thereby realize that customer mobile terminal is from a central means moving to another central means.Relay only is responsible for data forwarding between customer mobile terminal, and each central means is carried out identical or different management function as required, and middle armature assembly is finished all central means management functions.Customer mobile terminal arbitrarily moves in the service coverage of all central means and relay, if customer mobile terminal exceeds a central means coverage, and conclude when entering in the new central means coverage, customer mobile terminal will use the identification code of himself in new system, work in new relay system to new central means request, till this state remains to always and enters in the new central means scope again, customer mobile terminal just can move in system like this, and it is the customer mobile terminal service that central means and relay can have a complete system of one's own.
Can link to each other by wired, wireless or satellite channel between the central means of two-way literal mobile communcations system of the present invention and the central means, thereby realize customer mobile terminal moving between two central means.
The central means of two-way literal mobile communcations system of the present invention can also be by wired, wireless or satellite channel and a middle armature assembly directly or link to each other indirectly, thus realization customer mobile terminal mobile between each central means.
Below in conjunction with accompanying drawing the present invention is described in detail.
Fig. 1 is the network structure of single-frequency dot system of the present invention.
Fig. 2 is the network structure of multiple frequency point system of the present invention.
Fig. 3 is the network structure that multiple frequency point system of the present invention carries out national networking.
Digital transmission mode according to two-way literal mobile communcations system of the present invention is non-traffic simulator system, when utilizing this system to carry out unidirectional paging, be similar to the working method of Chinese character display paging system, can be by central means editor written historical materials, different with Chinese character display paging mode is that written historical materials also can be transmitted by central means then by customer mobile terminal from edlin.When utilizing this system to carry out bi-directional digital communication, originating party is sent to the interrupting device recipient with the written historical materials that edits with wireless mode, and the debit receives the written historical materials that has object code of central means emission.
With reference to Fig. 1, the present invention adopts single-channel mode in system, i.e. a frequency is respectively used in up-downgoing, and descending frequency is regularly launched the busy not busy signal of indication receive channel.When local telephone network or long-distance wire user during, basic identical with paging system by Public Switched Telephone Network calling party portable terminal (MS).The characteristics of customer mobile terminal transmission circuit are that receiving unit adopts fixed frequency in the single-frequency dot system, receive the data message from relay, and this information comprises lteral data and regularly indicates the relay receiving terminal not busy signal that does; Radiating portion adopts the fixed frequency radiation pattern, controls its emission by the accessibility signal that relay sends, if the relay receiving terminal is busy, then waits for.The working method of single-frequency dot system is that the customer mobile terminal receiver is often opened, accessibility signal that the reception relay is launched and the data-signal that has condition code, if receive the data that conform to the unique characteristics sign indicating number, then on the screen through after the signal processing this information being presented at customer mobile terminal and send sound and light alarm.During the emission data, be the Word message data that to edit,, data sent to relay according to the accessibility signal that relay is regularly launched.Communicating by letter between customer mobile terminal and the customer mobile terminal, it is the signal that uses customer mobile terminal equipment to send to have self identification code and recipient's identification code and Word message address code by originating party, by delivering to central means after the relay reception processing, central means is launched by relay through queuing and after handling; If a plurality of interrupting devices arranged then send simultaneously together with the condition code of this relay, after treatment, search the relay that the recipient registers by central means, launch by this relay then.Certain distance to be arranged at interval between relay and the relay, to prevent co-channel interference.The advantage of single-frequency dot system is that occupied channel is few, device fabrication is simple; Shortcoming is that capacity is little, and the scope of application is little.
With reference to Fig. 2, the present invention adopts frequency synthesis technique in system, takies physical condition according to frequency range and selects working frequency range.Also can adopt and stride band frequency, promptly descending employing V section, up employing U section.Each central means and relay all have condition code separately, between customer mobile terminal, realize in the process of Word message transmission, condition code will be sent with Word message, to show above-mentioned condition code on the screen of recipient's customer mobile terminal, be to show more than one condition code on recipient's the screen of customer mobile terminal, inform this Word message of recipient by which central means and relay forwarding, promptly the recipient determines that emission side is that area in that city.Each customer mobile terminal all has an identification code, and this identification code and some other information have constituted the frequency shift keyed signals that is sent to central means or relay together.The effect of identification code is to make central means and relay determine whether this customer mobile terminal is the service object of native system, this identification code will be forwarded to the customer mobile terminal that will receive automatically in addition, inform the source of this Word message of recipient, i.e. bolter's identity.As long as customer mobile terminal is start, just ceaselessly receive the information of the control channel of central means or relay emission, wherein main component is to be customer mobile terminal indication idle channel, when there is idle channel in the area at customer mobile terminal place, just will be according to the idle channel that is provided, automatically adjust tranmitting frequency and transmit, reach non-interfering purpose.If all channels all are in user mode, though this probability is very little, the user also must have channel idle to come out by the time.
The difference of multiple frequency point system and single-frequency dot system is: have the system frequency partition of a plurality of relays to use, the single frequency of following behavior, last behavior multifrequency point, be that each relay all has a plurality of data channels that are used to receive and a signaling channel that is used to launch, busy not busy in order to the indication receive channel.The characteristics of customer mobile terminal transmission circuit are that receiving circuit adopts frequency synthesis technique in multiple frequency point system, under open state, and signaling channel in the relay controlled area, automatic scan place and data transmission channel.The working method of multiple frequency point system receives the signaling-information of this relay controlled area for the customer mobile terminal machine, and every operation carries out in this relay controlled area; Transregional if desired, then differentiate the relay controlled area at place by the field intensity judging circuit, when arriving a certain limit a little less than the received field strength, open and receive scanning, then can scan and receive another field intensity stronger signaling-information if in another relay controlled area this moment, and set is in this channel, according to this signaling indication channel, send registering signal simultaneously, make central means know the relay controlled area at this present place of customer mobile terminal.The advantage of multiple frequency point system is that user capacity is big, it is little to disturb, and shortcoming is that occupied channel quantity is many.
With reference to Fig. 3, each central means can be by wired, wireless or satellite channel and middle armature assembly directly or link to each other indirectly, thereby the realization customer mobile terminal is from a central means mobile to another central means.Relay only is responsible for data forwarding between customer mobile terminal, and each central means is carried out identical or different management function as required, and for example: the personal terminal Word message is collected, transmitted, user terminal whole nation number or local number registration etc.Middle armature assembly is finished to all central means management functions, as data collection, information check etc.The service coverage of central means and relay depends on transmitting power and some other factors of transmitter, is generally 50 kilometers (system's diameter can reach 100 kilometers).Obviously customer mobile terminal can arbitrarily move in this scope, if customer mobile terminal exceeds this service range, and judge when entering a new relay system, it will use the identification code of himself in new system, work in new midsequent system to new central means request, this state will remain to always and enter till another relay system.Customer mobile terminal just can move between system like this.
Link to each other by wired, wireless or satellite channel between central means and central means, can realize customer mobile terminal moving between two central means.
It is the customer mobile terminal service that central means and relay also can have a complete system of one's own.The signal encoding of system of the present invention is:---speech mode: digital signal.---sign indicating number type: NRZ.---signal speed: 6400bit/s.---adjustment mode: frequency shift keying fsk, four level.---frequency deviation: ± 4.8KHz; ± 1.6KHz.---coding: adopt MOTOROLA company Flexible High Speed Paging.System frequency of the present invention is configured to:---operating frequency: 280MHz frequency range or 800MHz frequency range.---frequency range interval: 25KHz.---frequency offset: f ± 75 f ± 50 f ± 25---transmit receive separation: 10MHz.Power system capacity of the present invention is: single-channel system user capacity about 30,000, the multichannel system user capacity can significantly improve according to channel quantity.The interfacing of system of the present invention requires: the technical indicator of analog trunk (circuit) should meet the relevant regulations of GB GB7437-87 " public simulation toll telephone automatic switching network transmission performance indicators ".The technical indicator of digital trunk (circuit) should meet the regulation of " digital-to-analogue is mixed public telephone automatic switching network transmission performance indicators ".The relay transceiver of system of the present invention network require be:---frequency tolerance: during the 800MHz frequency range during 2.5 * 10 280MHz frequency ranges 5 * 10---adjacent-channel power :≤-70dB.---the spuious width of cloth is penetrated :≤-70dB.---output impedance: 50 Ω---transmitting power: 100W-200W.---transmitted bandwidth: 16KHz during the 280MHz frequency range.32KHz during the 800KHz frequency range.---receiving sensitivity :≤1.0 μ V.---antenna perpendicular polarization, high-gain.
The user terminal numbering of system of the present invention adopts the number of hexadecimal number as customer mobile terminal, and this number always has eight, and wherein front two is on national network area code, totally 256 of area code quantity; The 3rd is control centre number, totally 16; Five of backs are the sequence number of customer mobile terminal; Totally 1048576.
Claims (3)
1, a kind of two-way literal mobile communcations system comprises central means, relay and customer mobile terminal, user terminal, it is characterized in that: at least one central means with condition code links to each other with the customer mobile terminal with each self-demarking code with at least one relay with condition code or at least one many receive channel relay respectively, at least one user terminal links to each other with public switched telephone network (PSTN), this system can adopt single-channel mode, a frequency or up employing multifrequency point are respectively used in up-downgoing, following behavior single-frequency point, relay and customer mobile terminal all are connected to antenna, above described connection refer to by wired, wireless or satellite channel connects.
2, a kind of two-way literal mobile communcations system comprises central means, relay, customer mobile terminal, user terminal, also comprise middle armature assembly, Packet Switch Data Network, it is characterized in that: at least two central means with condition code link to each other with the customer mobile terminal with each self-demarking code with the relay of receive channel more than two with condition code respectively at least, and at least two user terminals link to each other with public switched telephone network (PSTN), Packet Switch Data Network links to each other with a middle armature assembly with two central means respectively at least, each user terminal and relay all are connected to antenna, above described connection be meant by wired, wireless or satellite communication links to each other.
3, the means of communication as a kind of two-way literal mobile communcations system of claim 1 or 2, it is characterized in that: use customer mobile terminal equipment to send from the customer mobile terminal originating party and have self identification code and the information that receives identification code and Word message address code, this information is the Word message that edits of originating party or by central means editor's written historical materials, this information is delivered to central means after receiving processing by relay, central means is launched by relay through queuing and after handling, employing single-frequency point is that the method for single-channel mode is that a frequency is respectively used in up-downgoing, the receiving unit of customer mobile terminal adopts the digital information of fixed frequency reception from relay, radiating portion adopts the fixed frequency emission, and control its emission by the accessibility signal that relay sends, for the network that adopts multiple frequency point system, the single frequency of then descending employing, up employing multifrequency point, be that each relay all has a signaling channel that is used to launch and a plurality of data channel that is used to receive, the receiving circuit of customer mobile terminal adopts frequency synthesis technique, signaling channel and the data transmission channel of this receiving circuit automatic scan in the relay controlled area, radiating circuit also adopts frequency synthesis technique, and control its tranmitting frequency by the signaling-information that relay sends, realize that between customer mobile terminal condition code and identification code will automatically be sent with Word message in the Word message transmittance process, carry out on national network network for multiple frequency point system, wherein each central means can directly or indirectly link to each other with middle armature assembly by Packet Switch Data Network, being connected between central means and central means, being connected between central means and middle armature assembly is by wired, wireless or satellite channel links to each other, thereby realize that customer mobile terminal is from a central means moving to another central means, relay only is responsible for data forwarding between customer mobile terminal, each central means is carried out identical or different management function as required, middle armature assembly is finished all central means management functions, customer mobile terminal arbitrarily moves in the service coverage of all central means and relay, if customer mobile terminal exceeds a central means coverage, and conclude when entering in the new central means coverage, customer mobile terminal will use the identification code of himself in new system, work in new relay system to new central means request, till this state remains to always and enters in the new central means scope again, user terminal just can move in system like this, and it is the customer mobile terminal service that central means and relay can have a complete system of one's own.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95105336A CN1043116C (en) | 1995-05-08 | 1995-05-08 | Two-way literal mobile communication system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95105336A CN1043116C (en) | 1995-05-08 | 1995-05-08 | Two-way literal mobile communication system |
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| Publication Number | Publication Date |
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| CN1128472A CN1128472A (en) | 1996-08-07 |
| CN1043116C true CN1043116C (en) | 1999-04-21 |
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| CN95105336A Expired - Fee Related CN1043116C (en) | 1995-05-08 | 1995-05-08 | Two-way literal mobile communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101123600B1 (en) * | 2006-09-21 | 2012-03-21 | 퀄컴 인코포레이티드 | Method and apparatus for mitigating oscillation between repeaters |
| CN112865852B (en) * | 2019-11-28 | 2022-04-01 | 清华大学 | Routing method and routing equipment for network layer addressing based on spatial position information |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0544456A2 (en) * | 1991-11-27 | 1993-06-02 | AT&T Corp. | Paging arrangements in a cellular mobile switching system |
| CN1095881A (en) * | 1992-11-27 | 1994-11-30 | 莫托罗拉公司 | Have the wide area paging of combination and the signalling system of high data rate transfer |
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1995
- 1995-05-08 CN CN95105336A patent/CN1043116C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0544456A2 (en) * | 1991-11-27 | 1993-06-02 | AT&T Corp. | Paging arrangements in a cellular mobile switching system |
| CN1095881A (en) * | 1992-11-27 | 1994-11-30 | 莫托罗拉公司 | Have the wide area paging of combination and the signalling system of high data rate transfer |
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| CN1128472A (en) | 1996-08-07 |
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