CN1141801C - Multiplexer parallel transmission broadband high-speed frequency-hopping communication method and device thereof - Google Patents
Multiplexer parallel transmission broadband high-speed frequency-hopping communication method and device thereof Download PDFInfo
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- CN1141801C CN1141801C CNB021378428A CN02137842A CN1141801C CN 1141801 C CN1141801 C CN 1141801C CN B021378428 A CNB021378428 A CN B021378428A CN 02137842 A CN02137842 A CN 02137842A CN 1141801 C CN1141801 C CN 1141801C
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Abstract
The present invention relates to a multiway parallel transmission broadband high speed hopping frequency communication method and a device thereof which is a system which is composed of chips at corresponding low speed and can carry out high speed broadband signal transmission, and the present invention belongs to the technical field of wireless communication. In the method, in a hopping frequency communication system, N one-to-one corresponding transmission and receiving channels are established between information sources and information sinks; a large document to be transferred is divided into N small documents, and the divided small documents are simultaneously transferred and received in parallel in a multiway wireless channel parallel transmission and receiving method; finally, the divided small documents are synthesized and restored into the original large document causing the transmission speed of the original large document to be enhanced by N times. The device is composed of a microprocessor, a hopping frequency pattern generator, a base band data dividing and synthesizing machine, an information source and information sink module, frequency synthesizers for hopping frequencies, modems, moving power amplifiers and time division duplexers, wherein N sets of multiple channels are composed of identical frequency synthesizers for hopping frequencies, modems, power amplifiets and time division duplexers.
Description
One, technical field:
The present invention is that a kind of chip of relative low speed that uses constitutes the system that can carry out the high-speed wideband transmission signals, belongs to technical field of wireless communication.
Two, background technology:
Internet and mobile communication have become fastest-rising two big fields in the information industry, and service integration and multimedization are the emphasis of communication service development, and broadband radio multi-media communication is just becoming new focus.Because information medium is various, data volume is huge, broadband, high-speed requirement to the radio multimedium transmission are more and more obvious, therefore require the transmission rate of communication system necessary enough high, this makes the contradiction between frequency resource and broadband high-speed application and the big capacity become more and more outstanding, and any method that can solve these contradictions at low cost all has great application prospect.
In order to realize the broadband high-speed wireless multimedia communication, many new methods have been proposed in recent years in the world, for example be the WLAN (wireless local area network) (WLAN of representative with IEEE 802.11 and HiperLAN, Wireless Local AreaNetwork), with Bluetooth (Bluetooth system) is the Wireless Personal Network (WPAN of representative, WirelessPersonal Area Network) or the like, its starting point all is should be used for realizing channeling with the zonule, solves above-mentioned contradiction.Especially the appearance of wireless personal area network communication system such as bluetooth is quietly risen the notion of built-in radio.The application of this embedded radio electrical chip may be omnipresent in future, and price also can be more and more cheap.In addition, because its application scenario is other communication system that has the user of a large amount of similar application or be operated in same frequency range mostly, insert and anti-jamming capacity so requirement must have multiple access, so these systems all use spread spectrum and CDMA (Code Division Multiple Access).
But some present systems, the rate of information throughput lower (the baseband signalling speed as Bluetooth system only is 1Mbps), adopt comparatively complicated modulation system (adopting the OFDM mode for high data rate applications in several systems as WLAN) more, thereby make cost too high.Therefore, how workout cost and contradiction between speed promptly constitute high speed data transmission system with the low-cost chip of relative low speed and have important Practical significance.
Three, summary of the invention:
(1) goal of the invention
The purpose of this invention is to provide a kind of chip of relative low speed that uses and constitute the multiplexer parallel transmission broadband high-speed frequency-hopping communication method and the device that can carry out the broadband high-speed multimedia transmission
(2) technical scheme
The present invention is based on the notion of frequency hopping-code division multiple access (FH-CDMA) principle and built-in radio, proposition improves the rate of information throughput of system with the method for multidiameter delay transmission, it promptly is the embedded radio electrical chip of R with message transmission rate, realize that the peak-data transmission rate is the multilink parallel transmission wireless communication system of NR, making message transmission rate is R, 2R, 3R,, the series of products of NR; In frequency-hopping communication system, between sourcesink, set up many one to one N the transmission and receive channel, one " big file " waiting for transmission is divided into N " small documents ", adopt the method for multiple wireless channel parallel transmission and reception, parallel transmission and the reception simultaneously of the individual small documents of " N " after cutting apart, be former " big file " through synthetic the recovery at last, make the transmission speed of former " big file " improve N doubly; This device is by microprocessor, the frequency hopping pattern generator, base band data decomposes and synthesizer, the sourcesink module, Frequency Hopping Synthesizer, modulator-demodulator, power amplifier, the time division duplex device is formed, the identical Frequency Hopping Synthesizer of " N " group is wherein arranged, modulator-demodulator, power amplifier, the time division duplex device is formed multichannel, microprocessor connects the frequency hopping pattern generator respectively, base band data decomposes and synthesizer, the sourcesink module, power amplifier, the time division duplex device, the frequency hopping pattern generator also joins with Frequency Hopping Synthesizer, base band data decompose with synthesizer also respectively with modulator-demodulator, the sourcesink module is joined.
At transmitting terminal, information source is determined available physical link number according to communication protocol, thereby controlling base band data by microprocessor or computer and software thereof decomposes and synthesis unit, the data that will transmit according to communication protocol are formed the packet of protocol compliant form, according to suitable flow control mechanism each packet is assigned to parallel channel then, packet is launched through radio frequency unit.Wherein, because interference that system self exists and the external interference characteristic in the operational environment of living in, must coordinate and control each Frequency Hopping Synthesizer by the frequency hopping pattern generator, so that frequency hopping collision probability minimum, thereby make the transmission performance of whole system reach best.At receiving terminal, the stay of two nights is controlled base band data by microprocessor or computer and software thereof and is decomposed and synthesis unit, will cushion from the packet on each parallel link, sort and recombinate.
Development along with software and radio technique, utilize and reach normal component and the chip of constantly releasing at present, can improve the message transmission rate of system by the multilink parallel processing technique, promptly between sourcesink, set up many physical connections one to one, its essence is applied to the multichannel notion in the frequency-hopping system exactly, and this is one of innovation of the present invention.
Communicate in such communication environment of being discussed, extraneous factor and the collision between each parallel link cause interference can for the communication on each link, and various communication protocol can adopt mechanism such as ARQ for improving the reliability of communication.Like this when the interference on each link is very serious, consider and to cause data to overstock or abandon, when causing system load very heavy, the queue length difference of each link is very big, so that the flow control algorithm of parallel link just seems is particularly important, this algorithm makes every effort to reduce packet reorganization time delay, thereby reduce taking of rx-side buffering district, the performance of raising system, the abundant and fair bandwidth of utilizing each physical link makes total information transfer rate reach maximum.
(3) technique effect the invention has the advantages that:
1, utilize frequency hopping-code division multiple access principle, adopting a plurality of message transmission rates is the embedded radio electrical chip of R, has realized that peak rate is the transfer of data of NR.
2, can be as required, obtaining message transmission rate is R, 2R, 3R ..., the series of products of NR, with low cost.
3, can with existing standard (for example bluetooth standard or IEEE802.11 standard etc.) compatibility, part such as embedded radio electrical chip, frequency hopping pattern generator and communication protocol can with reference to or adopt existing standard.
4, frequency hopping-code division multiple access system has stronger multiple access ability and antijamming capability, is suitable for disturbing the various application scenarios more, that electromagnetic environment is abominable.
5, be reciprocity between each module that participates in communicating by letter, do not have the notion of base station, they can realize radio mobile self-organizing network according to the communication needs.
6, employed communication protocol of invention and existing protocol basically identical have just increased one deck software on original basis; And Base-Band Processing and radio frequency unit are not done any change.Under the relatively cheap condition of various radio frequency chip prices, can yet be regarded as and improve the solution of transmission rate.After more the radio frequency transmission module of highest version is released, utilize multilink parallel processing plan proposed by the invention, can satisfy higher transmission rate request, what therefore this invention proposed is a kind of scheme of sustainable development.
Four, description of drawings:
Fig. 1 is a theory diagram of the present invention, this device comprises that microprocessor 1, frequency hopping pattern generator 2, communication protocol 3, base band data decompose and synthesizer 4, sourcesink module 5, Frequency Hopping Synthesizer part 6, modulator-demodulator 7, power amplifier 8, time division duplex device 9, wherein has the identical Frequency Hopping Synthesizer 6 of " N " group, modulator-demodulator 7, power amplifier 8, time division duplex device 9 to form multichannel.
Fig. 2 is the Bluetooth RF module PBA31301 of an Ericsson block diagram.
Fig. 3 is that of multidiameter delay transmission realizes schematic diagram.
Fig. 4 is another realization schematic diagram of multidiameter delay transmission.
Five, embodiment
The present invention is further described below in conjunction with embodiment, in accompanying drawing 1:
1, microprocessor or computer are the operation platforms of frequency hopping pattern generator, communication protocol, base band data decomposition and synthesis program and upper application software.Wherein frequency hopping pattern generator, communication protocol and base band data decompose with synthetic operand be not very big, only need general 16 even 8-bit microprocessor just can be competent at.But the complexity difference of the upper application software of different application is very big, for complicated application scenario, for example as the bluetooth local area network WAP (wireless access point), because upper application software comprises ICP/IP protocol, and microprocessor should be able to connect network adapter, therefore we consider to select 32-bit microprocessor at a high speed for use, as the MCF5272 of Motorola.
2, the frequency hopping pattern generator detects the frequency collision of parallel channel, and controls Frequency Hopping Synthesizer in view of the above, makes the collision probability of whole frequency-hopping system as far as possible little.Include the frequency hopping pattern generator in the communication protocol of in fact former single channel frequency-hopping system (as Bluetooth communication protocol or 802.11 communication protocols), but it is based on the single channel frequency hopping, and one of important content of the present invention is exactly the generation that has realized the frequency hopping pattern of multidiameter delay frequency-hopping system.The frequency hopping pattern generator detects each link according to the related data that modulator-demodulator provides, in case find to have the frequency collision to enter the new link setup frequency state of search according to advanced person's rule, up to setting up new link with regard to controlling corresponding Frequency Hopping Synthesizer.Equity side also should carry out corresponding operation.This AFH mechanism has guaranteed continuing, carrying out reliably of communication.
3, communication protocol has adopted the part of former single channel frequency-hopping system (as bluetooth or 802.11) communication protocol, adds upper realization parallel processing technique on this basis and the relevant algorithm and the mechanism that design.For example, before the link setup, must enumerate the single channel wireless communication module that can participate in parallel transmission on data source end and the destination end equipment in some way, thereby just can determine quantity of links; In addition, also to solve the problem of setting up physical connection one by one with a plurality of single channel wireless communication modules of the other side.Set up after parallel the connection, also will carry out real-time monitoring, management link.In communication process, to pack, unpack, and add or remove from level to level packet header to packet to data; And to carry out channel coding/decoding to data.These are all finished by communication protocol.
4, the base band data decomposition can be regarded as one deck communication protocol that adds in order to realize multidiameter delay to communicate by letter with synthesis module, and we are its explanation of independent do from communication protocol at this.In the packet that this module of transmitting terminal is come information source according to the working condition of each bar link, number and be assigned to each link.In this module of receiving terminal the data slice that receives is combined, form complete data file.
5, information source/stay of two nights module can be the equipment of any collection, generation, record, deal with data.For example, computer, PDA, mobile phone, scanner or the like.
6, Frequency Hopping Synthesizer, modulator-demodulator, low noise amplifier, power amplifier, time division duplex device can realize that for example Ericsson's Bluetooth RF module PBA 313 01 with ready-made module.
The block diagram of multiplexer parallel transmission broadband high-speed frequency-hopping communication system as shown in Figure 1.This system is made up of modules such as microprocessor or computer, radio frequency unit (comprising parts such as frequency hopping frequency synthesis, modulation, power amplification and low noise amplification, time division duplex), related software (comprising that frequency hopping pattern generator, communication protocol, base band data decompose with synthetic) and information source/stays of two nights.Wherein, radio frequency unit generally is the embedded radio electrical chip, and the present invention will use the individual such embedded radio electrical chip of i (i 〉=1).
In frequency-hopping communication system, between sourcesink, set up many one to one N the transmission and receive channel, one " big file " waiting for transmission is divided into N " small documents ", adopt the method for multiple wireless channel parallel transmission and reception, parallel transmission and the reception simultaneously of the individual small documents of " N " after cutting apart, be former " big file " through synthetic the recovery at last, make the transmission speed of former " big file " improve N doubly.
This device is by microprocessor 1, frequency hopping pattern generator 2, base band data decomposes and synthesizer 4, sourcesink module 5, Frequency Hopping Synthesizer 6, modulator-demodulator 7, power amplifier 8, time division duplex device 9 is formed, the identical Frequency Hopping Synthesizer 6 of " N " group is wherein arranged, modulator-demodulator 7, power amplifier 8, time division duplex device 9 is formed multichannel, microprocessor 1 connects frequency hopping pattern generator 2 respectively, base band data decomposes and synthesizer 4, sourcesink module 5, power amplifier 8, time division duplex device 9, frequency hopping pattern generator 2 also joins with Frequency Hopping Synthesizer 6, base band data decompose with synthesizer 4 also respectively with modulator-demodulator 7, sourcesink module 5 is joined.
Single channel wireless communication unit among Fig. 1 adopts bluetooth module, and communication protocol is Bluetooth protocol, and the frequency-hopping system of formation is Bluetooth system.Frequency Hopping Synthesizer among Fig. 1, modulator, demodulator, power amplifier and low noise amplifier and time division duplex device just all adopt the corresponding mechanism in the Bluetooth protocol to realize so.For example, according to Bluetooth protocol, modulator adopts Gaussian Frequency Shift Keying (FSK) modulation, and modulation index is k=0.3.Logical one sends positive frequency deviation, and logical zero sends negative frequency deviation.Demodulation can simply be finished by the FM discriminator of a restriction.We intend adopting the Bluetooth chip of Ericsson company as hardware platform.Below we are that example is introduced two examples of implementation with this system:
With the simplest file transfer applications is example, and we do not change bluetooth protocol stack Anywhere, just finishes all work in the file transfer software of oneself.The transmitting terminal file transfer software is responsible for big file is cut, and numbering sends then.Receiving terminal software is responsible for receiving, sorts and combination obtains original document.Like this, the transmission rate of file can bring up to several million, only needs several seconds by the software of a 10M of bluetooth download or the MP3 song of a first 4M, and this time delay is endurable.
This scheme is applied to PSTN gateway and Wireless LAN access point equipment based on Bluetooth technology, the network insertion point device that development is finished is applicable to that not only bluetooth cellular phone inserts PSTN, and, be applicable to PC, mobile computing and PDA wireless access computer network whenever and wherever possible simultaneously, on the airport, station, hotel, commercial office building, medium-sized and small enterprises and family all have potential market.As long as this wireless access way is in case be familiar with by people and accept, to bring people the method for brand-new access computer network, must form the real market demand, telecommunication apparatus manufacturing industry, data communication are brought great economic benefit and social benefit through business and related industry.
Claims (2)
1, a kind of multiplexer parallel transmission broadband high-speed frequency-hopping communication method, it is characterized in that in frequency-hopping communication system, between sourcesink, set up many one to one N the transmission and receive channel, one " big file " waiting for transmission is divided into N " small documents ", adopt the method for multiple wireless channel parallel transmission and reception, parallel transmission and the reception simultaneously of the individual small documents of " N " after cutting apart, be former " big file " through synthetic the recovery at last, make the transmission speed of former " big file " improve N doubly.
2, a kind of multiplexer parallel transmission broadband high-speed frequency-hopping communication device that is applicable to the described method of claim 1, it is characterized in that this device is by microprocessor (1), frequency hopping pattern generator (2), base band data decomposes and synthesizer (4), sourcesink module (5), Frequency Hopping Synthesizer (6), modulator-demodulator (7), power amplifier (8), time division duplex device (9) is formed, the identical Frequency Hopping Synthesizer (6) of " N " group is wherein arranged, modulator-demodulator (7), power amplifier (8), time division duplex device (9) is formed multichannel, microprocessor (1) connects frequency hopping pattern generator (2) respectively, base band data decomposes and synthesizer (4), sourcesink module (5), power amplifier (8), time division duplex device (9), frequency hopping pattern generator (2) also joins with Frequency Hopping Synthesizer (6), base band data decompose with synthesizer (4) also respectively with modulator-demodulator (7), sourcesink module (5) is joined.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB021378428A CN1141801C (en) | 2002-06-25 | 2002-06-25 | Multiplexer parallel transmission broadband high-speed frequency-hopping communication method and device thereof |
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| CNB021378428A CN1141801C (en) | 2002-06-25 | 2002-06-25 | Multiplexer parallel transmission broadband high-speed frequency-hopping communication method and device thereof |
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| CN1141801C true CN1141801C (en) | 2004-03-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101364918B (en) * | 2008-09-25 | 2010-09-01 | 东南大学 | Efficiency reliable routing method based on link quality for multi-hop wireless sensor network |
| CN102404042B (en) * | 2010-09-15 | 2015-06-24 | 大连大学 | Base band (BB)-radio frequency (RF) multi-channel communication management design |
| CN102737016B (en) * | 2011-03-30 | 2014-07-16 | 中国银联股份有限公司 | A system and a method for generating information files based on parallel processing |
| CN103701860A (en) * | 2013-12-06 | 2014-04-02 | 北京奇虎科技有限公司 | Network transmission and receiving methods and devices for small files, and network transmission system |
| CN106255040B (en) * | 2016-08-18 | 2019-10-15 | 长沙丰灼通讯科技有限公司 | The method for improving bluetooth BLE transmission speed on IOS terminal device |
| CN113098559B (en) * | 2020-03-30 | 2022-07-29 | 深圳友讯达科技股份有限公司 | Wireless frequency hopping network-based multi-channel multi-rate concurrent communication method |
| CN113934553A (en) * | 2021-10-14 | 2022-01-14 | 西安万像电子科技有限公司 | Shear plate redirection transmission method and device, storage medium and electronic equipment |
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