CN1085031A - Public communication exchange net and implementation method thereof - Google Patents
Public communication exchange net and implementation method thereof Download PDFInfo
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- CN1085031A CN1085031A CN 92107700 CN92107700A CN1085031A CN 1085031 A CN1085031 A CN 1085031A CN 92107700 CN92107700 CN 92107700 CN 92107700 A CN92107700 A CN 92107700A CN 1085031 A CN1085031 A CN 1085031A
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Abstract
The invention belongs to public telephone, data switched network system engineering technology.The present invention adopts the two-way catv technology in conjunction with the multichannel common switching technology, Computer Processing, and networking and digital signalling technology are formed wired public communication exchange net.Purposes of the present invention is that CATV adds public correspondence exchange.
Description
The invention belongs to public telephone, data switched network system engineering technology.
The present invention relates to, use for reference existing mature technology, adopt the two-way catv technology in conjunction with the multichannel common switching technology, computer technology, networking and digital signalling technology are formed practical low-cost wired public telephone, data switched network, are called for short " CAPSN ".
Background of the present invention:
Power line, telephone wire, tv line have become the component part of the modern life.And the phone development is subjected to the restriction of exchange, subscribers feeder, popularizes restricted in the development of high density user area, city.
Mobile phone is a new and high technology, because the restriction of frequency resource is divided in uhf band work.The technical difficulty height, the networking equipment complexity, investment is expensive.
The development of current C ATV is fast, and expection development speed and domestic consumer's popularity rate will surpass phone.
Summary of the present invention:
The present invention is carrier with the two-way catv, divides uply, and band downlink is pressed certain frequency at interval, distributes hundreds of to thousands of channels, adopts the multichannel common switching technology, forms CAPSN.User terminal is a frequency modulation transceiver, claims in " wired radio station ".
Compare with radio telephone, carrier frequency does not have decline in transmission, does not have strong and weak and changes.Be distributed in the channel parameter stable and controllable in the two-way catv, can guarantee communication quality, error rates of data is also low.For the multistage Intermodulation Interference that produces in the multichannel common, the present invention adopts the level parameters of control carrier level and control adjacent channel to solve.
Up, band downlink has low cutting apart in two-way catv, in cut apart, height is cut apart, and adopts low cutting apart, and puts in one to be decided to be 10.7MHZ, the highest 400 channels that distribute.Suggestion is cut apart in adopting, and puts in one and can select 27MHZ or 45MHZ, corresponding 1000 or 1600 channels that distribute.Transmission line system can utilize CATV line reconstruction or newly-built by the two-way catv standard.The progressively increase-volume of CAPSN intra-office subscribers and relaying.
Seize control channel in order to reduce the user, accelerate the speed that continues, the present invention adopts digital signalling, channel radio and control channel mode.CAPSN distributes (or several) channel to broadcast available channel and the control code data of prescribing a time limit, and distributes ten (or tens) control channels to use for the user.All users are distributed in ten control channels by the address code units and are in the machine state of keeping.
CAPSN office establishes to organize to be equipped with to form to be had: Spectral Receiver, monitoring receiver, downlink channel converter, channel radio machine, computer, two-way catv transmission line (main line, a gauze).Available channel broadcasting is measured idle channel by Spectral Receiver, and control channel is collected the number signaling by monitoring receiver, delivers to Computer Processing together, preferentially selects optimum channel to broadcast, and simultaneously according to channel occupancy density, adjusts control code in limited time.The number signaling is handled file by statistics.
The user is exchange in net.The calling party is with the input of called address sign indicating number, and wired radio station is automatically brought to broadcast channel, receives effective available channel and the control code of prescribing a time limit, and forwards callee's the machine of keeping channel then to, sends paging control signaling.Form: called subscriber's address code, available channel sign indicating number, the control code of prescribing a time limit, dialing user identity sign indicating number.Cry logical after, both sides forward available channel conversation or exchanges data to.Wired radio station general technology index is suitable with radio telephone, to fast lock and spuious having higher requirements, and transmitting power＜1 milliwatt.After receiving time limit control signaling, start timer, and select transceiver mode according to control command.Adopt digital signalling, channel radio and control channel paging mode, the speed that continues is fast, can reach 10 X10 of per second, so the ruthless pre-emption probability is very little.
Interoffice junction.Establish 10% user's trunk line routinely, forward digital signalling after the demodulation and speech to an innings trunk line through interface equipment.When networking with telephone call office together, solve interface, problems such as signaling conversion and numbering plan with reference to mobile phone networking networking technology.Wired radio station with A/D, D/A conversion single-chip microcomputer are arranged can directly become digital code to speech, enters programme-controlled exchange office.
The cheap ripe singlechip technology of employing, the channel that has solved wired radio station is controlled, digital signalling paging, digital signalling decoding, problems such as automatic exchange.The user is changed in the centralized control exchange of public telephone exchange disperse the automatic control exchange.Compare CAPSN components of system as directed index and deficient function with stored program controlled telephone exchange.Can develop insertion, group busy, safety inspection, disaster alert, functions such as e-mail, and with the liter of cpu performance that uses and software and, constantly rise and, update functions.
In sum, the present invention constitutes complete system engineering.This is a new industry.
Claims (3)
- The present patent application scope is:1, public communication exchange net system engineering and implementation method thereof.It is characterized in that adopting the two-way catv technology in conjunction with multichannel common switching technology and computer technology networking.
- 2, the product that 1 described system engineering is made according to claim is characterized in that adopting the CAPSN wire user terminal of transceiver in conjunction with computer technology.
- 3,, it is characterized in that adopting office's equipment of Channel Detection, broadcasting, data monitoring and Computer Processing according to the product of claim 1 described system engineering manufacturing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92107700A CN1061195C (en) | 1992-09-07 | 1992-09-07 | Public communication exchange net and implementing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92107700A CN1061195C (en) | 1992-09-07 | 1992-09-07 | Public communication exchange net and implementing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1085031A true CN1085031A (en) | 1994-04-06 |
| CN1061195C CN1061195C (en) | 2001-01-24 |
Family
ID=4943019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92107700A Ceased CN1061195C (en) | 1992-09-07 | 1992-09-07 | Public communication exchange net and implementing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1061195C (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE16548T1 (en) * | 1982-04-29 | 1985-11-15 | Deltavisie Bv | SYSTEM FOR TRANSMISSION OF PROGRAM OR DATA SIGNALS. |
-
1992
- 1992-09-07 CN CN92107700A patent/CN1061195C/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN1061195C (en) | 2001-01-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Hongguang Document name: payment instructions |
|
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20031230 Decision number of declaring invalidation: 5695 |