CN101136724A - Wireless self-organizing cooperative communication method - Google Patents
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- CN101136724A CN101136724A CNA2007101575449A CN200710157544A CN101136724A CN 101136724 A CN101136724 A CN 101136724A CN A2007101575449 A CNA2007101575449 A CN A2007101575449A CN 200710157544 A CN200710157544 A CN 200710157544A CN 101136724 A CN101136724 A CN 101136724A
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Abstract
Using multiple sub channels for each user to carry out comm, the method includes following steps: (1) when requiring communicating with other users, the user carries out broadcasting by using own beacon; (2) scanning and receiving beacons of other users through a specific sub channel, the user determines users possible to communicate with directly based on SNR of beacons, establishes, marks and stores marked comm links in memory list (ML) as well as sends them to each relevant user; (3) based on marked group of user object on current ML, the user determines whether comm can be accomplished; if not, then waiting; if yes, then selecting optimized comm route to build user comm link (multi-user cooperating diversity mode adopted if there are multilinks); (4) when expecting to quit from the network, the user sends info to users to communicate with in advance as well as modifies and stores marked comm links in ML. Advantages are: selforganizing collaboration, flexible, and simple etc.
Description
Technical field
The invention belongs to wireless communication field, relate more specifically to a kind of wireless self-organizing cooperative communication method.
Background technology
Radio communication is one of most important infrastructure of advanced information society, has become the primary demand of country's progress and social development, is bringing into play important effect in sustainable economic development and modern military national defense construction.
Wireless self-organization network is made up of one group of autonomous radio node or terminal, and wireless self-organization network is independent of fixing infrastructure.Wireless self-organization network can be used in fields such as military operation, sensor network, urgent and interim occasion, personal communication, mobile communication, industrial factories and miness, domestic wireless information appliance networks, has broad application prospects.Since the nineties, the research of wireless self-organization network worldwide a subbranch from wireless communication field expand relatively more independently field gradually to.At present, no matter in the world, still on the zone (areas such as Europe and Asia), periodic wireless self-organization network academic conference is increasing.The Routing Protocol of wireless self-organization network, wireless access technology, traffic engineering, multicast transmission, network security etc. and corresponding engineering practical problems thereof are the focuses that current international academic community and industrial quarters are paid close attention to.
The multipath fading characteristic that wireless channel has is to hinder the one of the main reasons that channel capacity increases and serve quality improvement.The new technology of seek further to enlarge channel capacity, improving communication quality is domestic and international academia, industrial circle question of common concern.Diversity technique can merge the independent sample of signal that declines of a plurality of experience at receiving terminal, with the decline in the antagonism wireless channel by launch a plurality of sample of signal at transmitting terminal.Common diversity mode mainly contains time diversity, frequency diversity and spatial domain diversity, and wherein the spatial domain diversity technique is because extra holding time and bandwidth resources, and can combine with other diversity modes, thereby more attractive.The basic thought of spatial domain diversity is to utilize transmit sample or a plurality of received signal sample (a plurality of incoherent channel) of separate on the space a plurality of to resist multipath fading.Collaboration diversity is a kind of new spatial domain diversity technique.Collaboration diversity makes the wireless communication terminal of single antenna also can realize the spatial domain diversity.The basic thought of collaboration diversity is that each wireless communication terminal in the system all has one or more affiliates, has a responsibility between the affiliate helping its partner to transmit information in the own information of transmission.So, each wireless communication terminal has not only utilized oneself but also has utilized affiliate's space channel in the process of transmission information, thereby has obtained certain space diversity gain.Collaboration diversity can enlarge power system capacity, improves network service quality, improves systematic function.Collaboration diversity is a brand-new research field, and is at the early-stage abroad, caused people's attention at home.The thought of collaboration diversity has boundless application prospect, can be applicable to multiple occasions such as cell mobile communication systems, WLAN (wireless local area network) and wireless sensor network.
Just be based on above background, the present invention is directed to the practical communication environment and propose a kind of wireless self-organizing cooperative communication method, can satisfy the needs of self-organizing and multi-user's collaboration diversity simultaneously.
Desire is done more deep understanding to the patent background can be with reference to following documents and materials:
M.Frodigh，P.Johansson，and?P.Larsson.“Wireless?ad?hocnetworking：the?art?of?networking?without?a?network”.EricssonReview，No.4，2000，pp.248-263.
C.E.Perkins.Ad?Hoc?Networking.New?York：Addison?WesleyProfessional，December?2000.
Z.J.Haas，et?al.，eds.Special?Issue?on?Wireless?Ad?Hoc?Networks.IEEE?Journal?on?Selected?Areas?in?Communications，Vol.17，No.8，August?1999.
J.P.Hubaux?et?al.“Towards?self-organized?mobile?ad?hocnetworks：the?terminodes?project”.IEEE?Communications?Magazine，Vol.39，No.1，2001，pp.118-124.
L.Blazevic?et?al.“Self-Organization?in?Mobile?Ad-Hoc?Networks：the?Approach?of?Terminodes”.IEEE?Communications?Magazine，Vol.39，No.6，2001，pp.166-174.
A.Nosratinia，T.E.Hunter，and?A.Hedayatv.“Cooperativecommunication?in?wireless?networks”.IEEE?CommunicationsMagazine，Vol.42，No.10，2004，pp.74-80.
J.Laneman，D.N.C.Tse，and?G.W.Wornell.“Cooperativediversity?in?wireless?networks：Efficient?protocols?and?outagebehavior”.IEEE?Transactions?on?Information?Theory，Vol.50，No.12，2004，pp.3062-3080.
Summary of the invention
The present invention is directed to the communication issue between the auxiliary wireless communication terminal of no static infrastructure, proposed a kind of wireless self-organizing cooperative communication method.
A kind of wireless self-organizing cooperative communication method that the present invention proposes is characterized in that each user adopts a plurality of subchannels to carry out dissimilar communication, and each user adds to set up or withdraw from communication network and comprises the following steps:
1) when certain user need communicate with other users, this user carries out broadcast communication at the beacon that certain particular sub-channel (such as the 1st subchannel) goes up with oneself;
2) all need be gone up scanning in certain particular sub-channel (such as the 1st subchannel) with each user that other users communicate and receive other user's beacons on every side, determine to carry out the user object of direct communication and on certain particular sub-channel (such as the 2nd subchannel), set up each other Preliminary Communications link according to the signal to noise ratio size that receives beacon, the group of user object each other of setting up the Preliminary Communications link (per two users of intercommunication be a group) is mutually indicated and the user object group that all have set up the Preliminary Communications link indicated issue each associated user's object and be kept in separately the memory tabulation;
3) the user object group sign that all during all need be tabulated according to current storage with each user that other users communicate have been set up the Preliminary Communications link determines whether to finish communicating by letter between target terminal; If temporarily can not finish the communication between target terminal then continue to await a favorable opportunity, if the communicating route (can be many routes) that can finish the communication between target terminal then therefrom select optimize and at the communication link of setting up on other subchannels between the user (when the communication link between the user had many, the transmission means that adopts multi-user's collaboration diversity was with anti-channel fading of further raising and anti-ability of damaging);
4) when certain user has finished communication task and wishes to withdraw from communication network, in advance information is sent to the user of direct communication with it, these with it the user's modification of direct communication set up the user object group beacon information of Preliminary Communications link and issued each associated user's object modification and be kept in separately the memory tabulation;
5) the user object group sign that all during all need be tabulated according to current storage with each user that other users communicate have been set up the Preliminary Communications link determines whether to finish communicating by letter between target terminal; If temporarily can not finish the communication between target terminal then continue to await a favorable opportunity, if the communicating route (can be many routes) that can finish the communication between target terminal then therefrom select optimize and at the communication link of setting up on other subchannels between the user (when the communication link between the user had many, the transmission means that adopts multi-user's collaboration diversity was with anti-channel fading of further raising and anti-ability of damaging).
Wireless self-organizing cooperative communication method according to above-mentioned is characterized in that: each user's the beacon that carries out broadcast communication on certain particular sub-channel (such as the 1st subchannel) is a periodic sequence; Each user's the beacon periodicity sequence of carrying out broadcast communication on certain particular sub-channel (such as the 1st subchannel) has pseudo-random characteristics; Different user between the beacon periodicity sequence of carrying out broadcast communication on certain particular sub-channel (such as the 1st subchannel), have orthogonality; Each user's number of subchannels is in 16,64,256 and 1024; A plurality of subchannels of each user are realized by FFT (fast discrete Fourier conversion) and IFFT (fast discrete Fourier inverse transformation); The frequency interval of subchannel is among 2KHz, 16KHz, 64KHz and the 128KHz; The communicating route of optimizing is selected according to determining with the user situation that other users communicate in communication quality requirement and the network.
Characteristics of the present invention:
The present invention is a kind of wireless self-organizing cooperative communication plan.Each user's the beacon that carries out broadcast communication on certain particular sub-channel (such as the 1st subchannel) is a periodic sequence, each user's the beacon periodicity sequence of carrying out broadcast communication on certain particular sub-channel (such as the 1st subchannel) has pseudo-random characteristics, different user between the beacon periodicity sequence of carrying out broadcast communication on certain particular sub-channel (such as the 1st subchannel), have orthogonality, these have guaranteed that each user can realize that fast and accurately frame synchronization, Frequency Synchronization, time synchronized, channel transfer characteristic estimate.Each user's number of subchannels is in 16,64,256 and 1024, a plurality of subchannels of each user are realized by FFT and IFFT, the frequency interval of subchannel is among 2KHz, 16KHz, 64KHz and the 128KHz, the communicating route selection of optimizing realizes simple also can reduce interference and raising diversity gain between subchannel according to can be definite with the user situation that other users communicate in communication quality requirement and the network.Communication means of the present invention has plurality of advantages such as self-organizing cooperative, networking flexibility, simple, the anti-channel fading of structural arrangements, anti-damage.
Description of drawings
Fig. 1 is an embodiment schematic diagram according to the wireless communication system of wireless self-organizing cooperative communication method of the present invention.
Fig. 2 is an embodiment schematic diagram according to the wireless communication terminal of wireless self-organizing cooperative communication method of the present invention.
Embodiment
Below in conjunction with accompanying drawing specific embodiments of the invention are described in detail.
An embodiment of the wireless communication system of the wireless self-organizing cooperative communication method that proposes according to the present invention, as shown in Figure 1.As shown in fig. 1, by utilizing the wireless communication system of wireless self-organizing cooperative communication method formation according to this embodiment, this wireless communication system can not have to realize the direct self-organizing cooperative communication between the wireless communication terminal under the auxiliary situation of static infrastructure.Example among Fig. 1 represents to include 8 user terminals (user 1, user 2, user 3, user 4, user 5, user 6, user 7, user's 8) network.The wireless self-organizing cooperative communication system allows directly self-organizing cooperative communication between the wireless communication terminal, constitutes a communication network.Among Fig. 1, periphery ring is represented the network that forms.Wireless self-organizing cooperative communication system according to the embodiment among Fig. 1 provides directly self-organizing cooperative communication between the wireless communication terminal, shown in the solid line arrow.Each user adopts a plurality of subchannels to carry out dissimilar communication, and each user adds to set up or withdraw from communication network and comprises the following steps:
1) when certain user need communicate with other users, this user carries out broadcast communication at the beacon that certain particular sub-channel (such as the 1st subchannel) goes up with oneself;
2) all each users that need communicate with other users are (such as user 1, the user 2, the user 3, the user 4, the user 5, the user 6, the user 7, the user 8) go up scanning reception other user's beacons on every side in certain particular sub-channel (such as the 1st subchannel), determine to carry out the user object of direct communication and on certain particular sub-channel (such as the 2nd subchannel), set up each other Preliminary Communications link (between user 1 and user 2 according to the signal to noise ratio size that receives beacon, between user 1 and the user 3, between user 1 and the user 4, between user 2 and the user 5, between user 2 and the user 6, between user 3 and the user 5, between user 3 and the user 6, between user 6 and the user 8, between family 5 and the user 8), the group of user object each other of setting up the Preliminary Communications link (per two users of intercommunication be a group) mutually indicated and the user object group that all have set up the Preliminary Communications link indicated issue each associated user's object and be kept in separately the memory tabulation;
3) the user object group sign that all during all need be tabulated according to current storage with each user that other users communicate have been set up the Preliminary Communications link determines whether to finish communicating by letter between target terminal; If temporarily can not finish the communication (between user 1 and user 7) between target terminal then continue to await a favorable opportunity, if the communicating route that can finish the communication (between user 1 and user 8) between target terminal then therefrom select to optimize (can be many routes, such as passing through user 1, the user 2, the user 5, the user 8, by user 1, the user 3, the user 5, the user 8, by user 1, the user 3, the user 6, the user 8, by user 1, the user 2, the user 6, the user 8) and (when the communication link between the user has many, adopt the transmission means of multi-user's collaboration diversity (to provide collaboration diversity between user 1 and the user 5 setting up communication link between the user on other subchannels such as user 2 and user 3, user 5 and user 6 provide the collaboration diversity between user 2 and the user 8) with anti-channel fading of further raising and anti-ability of damaging);
4) when certain user (such as user 3) finishes communication task and wishes to withdraw from communication network, in advance information is sent to the user (such as user 1, user 6) of direct communication with it, these with it the user's modification of direct communication set up the user object group beacon information of Preliminary Communications link and issued each associated user's object modification and be kept in separately the memory tabulation;
5) the user object group sign that all during all need be tabulated according to current storage with each user that other users communicate have been set up the Preliminary Communications link determines whether to finish communicating by letter between target terminal; If temporarily can not finish the communication between target terminal then continue to await a favorable opportunity (between user 1 and user 7), if the communicating route that can finish the communication (between user 1 and user 8) between target terminal then therefrom select to optimize (can be many routes, such as passing through user 1, the user 2, the user 5, the user 8, by user 1, the user 2, the user 6, the user 8) and setting up communication link between the user (when the communication link between the user had many, the transmission means (providing collaboration diversity between user 2 and the user 8 such as user 5 and user 6) that adopts multi-user's collaboration diversity was with anti-channel fading of further raising and anti-ability of damaging) on other subchannels.
According to embodiment, as shown in Figure 2 according to the wireless communication terminal of wireless self-organizing cooperative communication method of the present invention.As shown in Fig. 2 and Fig. 1, all comprise antenna, duplexing processor, radio frequency receiver, radiofrequency launcher, base band demodulator, baseband decoder, baseband modulator, baseband encoder, processor controls, protocol processor, memory, human-computer interaction interface according to the wireless communication terminal (user 1, user 2, user 3, user 4, user 5, user 6, user 7, user 8) of the wireless self-organizing cooperative communication system of wireless self-organizing cooperative communication method of the present invention.
The following describes the firing operation of wireless communication terminal.
Human-computer interaction interface sends to baseband encoder by protocol processor with digital signal under the cooperation of memory; Baseband encoder is encoded to this signal under the cooperation of processor controls and code signal is offered baseband modulator; The signal that provides under the cooperation of processor controls is provided baseband modulator, the discrete sample value that forms FFT (fast discrete Fourier conversion) data block and adopt IFFT (fast discrete Fourier inverse transformation) to be transformed to time domain at frequency domain also offers radiofrequency launcher to the signal after the modulation, the FFT data block is made up of subchannel, number of subchannels is in 16,64,256 and 1024, and the frequency interval of subchannel is among 2KHz, 16KHz, 64KHz and the 128KHz; Radiofrequency launcher converts the digital signal that provides to analog signal, amplifies this signal, produces radiofrequency signal, launches this signal by duplexing processor from antenna.Each user's the beacon that carries out broadcast communication on certain particular sub-channel (such as the 1st subchannel) is a periodic sequence, each user's the beacon periodicity sequence of carrying out broadcast communication on certain particular sub-channel (such as the 1st subchannel) has pseudo-random characteristics, different user between the beacon periodicity sequence of carrying out broadcast communication on certain particular sub-channel (such as the 1st subchannel), have orthogonality, the beacon that satisfies above-mentioned feature can be by as one group of displacement m sequence of a kind of specific type of pseudo-random number sequence with as the walsh sequence of orthogonal sequence, Hadamard sequences or the orthogonal sequence process multiplier and the integrator realization that produce by other modes.
The following describes the reception operation of wireless communication terminal.
Analog signal is received at antenna, offers radio frequency receiver by duplexing processor, and radio frequency receiver is a digital signal with analog signal conversion, and the digital signal after the conversion is offered base band demodulator; Base band demodulator under the cooperation of processor controls to signal carry out snr measurement, synchronously, channel estimating, equilibrium, demodulation, the signal after the demodulation is offered baseband decoder; Baseband decoder under the cooperation of processor controls to signal decoding; Protocol processor is handled decoded signal according to data format under the cooperation of memory, and extraction information sends to human-computer interaction interface from signal.
The following describes the self-organizing cooperative traffic operation between the wireless communication terminal.
Self-organizing cooperative traffic operation between wireless communication terminal is to be operating as the basis with the firing operation of above-mentioned wireless communication terminal and the reception of wireless communication terminal, under the cooperation of memory and protocol processor, processor controls also realizes the self-organizing cooperative communication between the different user by radio frequency receiver, radiofrequency launcher, duplexing processor, antenna according to communication link situation control base band demodulator, baseband decoder, baseband modulator, baseband encoder.
In conjunction with the accompanying drawings specific embodiments of the invention are had been described in detail above, but the present invention is not limited to the foregoing description, under the spirit and scope situation of the claim that does not break away from the application, those skilled in the art can make various modifications or remodeling.
Claims (8)
1. a wireless self-organizing cooperative communication method is characterized in that each user adopts a plurality of subchannels to carry out dissimilar communication, and each user adds to set up or withdraw from communication network and comprises the following steps:
1) when certain user need communicate with other users, this user carries out broadcast communication at the beacon that certain particular sub-channel (such as the 1st subchannel) goes up with oneself;
2) all need be gone up scanning in certain particular sub-channel (such as the 1st subchannel) with each user that other users communicate and receive other user's beacons on every side, determine to carry out the user object of direct communication and on certain particular sub-channel (such as the 2nd subchannel), set up each other Preliminary Communications link according to the signal to noise ratio size that receives beacon, the group of user object each other of setting up the Preliminary Communications link (per two users of intercommunication be a group) is mutually indicated and the user object group that all have set up the Preliminary Communications link indicated issue each associated user's object and be kept in separately the memory tabulation;
3) the user object group sign that all during all need be tabulated according to current storage with each user that other users communicate have been set up the Preliminary Communications link determines whether to finish communicating by letter between target terminal; If temporarily can not finish the communication between target terminal then continue to await a favorable opportunity, if the communicating route (can be many routes) that can finish the communication between target terminal then therefrom select optimize and at the communication link of setting up on other subchannels between the user (when the communication link between the user had many, the transmission means that adopts multi-user's collaboration diversity was with anti-channel fading of further raising and anti-ability of damaging);
4) when certain user has finished communication task and wishes to withdraw from communication network, in advance information is sent to the user of direct communication with it, these with it the user's modification of direct communication set up the user object group beacon information of Preliminary Communications link and issued each associated user's object modification and be kept in separately the memory tabulation;
5) the user object group sign that all during all need be tabulated according to current storage with each user that other users communicate have been set up the Preliminary Communications link determines whether to finish communicating by letter between target terminal; If temporarily can not finish the communication between target terminal then continue to await a favorable opportunity, if the communicating route (can be many routes) that can finish the communication between target terminal then therefrom select optimize and at the communication link of setting up on other subchannels between the user (when the communication link between the user had many, the transmission means that adopts multi-user's collaboration diversity was with anti-channel fading of further raising and anti-ability of damaging).
2. by the wireless self-organizing cooperative communication method of claim 1, it is characterized in that: described each user's the beacon that carries out broadcast communication on certain particular sub-channel (such as the 1st subchannel) is a periodic sequence.
3. by the wireless self-organizing cooperative communication method of claim 2, it is characterized in that: described each user's the beacon periodicity sequence of carrying out broadcast communication on certain particular sub-channel (such as the 1st subchannel) has pseudo-random characteristics.
4. by the wireless self-organizing cooperative communication method of claim 2, it is characterized in that: described different user between the beacon periodicity sequence of carrying out broadcast communication on certain particular sub-channel (such as the 1st subchannel), have orthogonality.
5. by the wireless self-organizing cooperative communication method of claim 1, it is characterized in that: described each user's number of subchannels is in 16,64,256 and 1024.
6. by the wireless self-organizing cooperative communication method of claim 1, it is characterized in that: a plurality of subchannels of described each user are realized by FFT (fast discrete Fourier conversion) and IFFT (fast discrete Fourier inverse transformation).
7. by the wireless self-organizing cooperative communication method of claim 1, it is characterized in that: the frequency interval of described subchannel is among 2KHz, 16KHz, 64KHz and the 128KHz.
8. by the wireless self-organizing cooperative communication method of claim 1, it is characterized in that: the communicating route of described optimization is selected according to determining with the user situation that other users communicate in communication quality requirement and the network.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101287262B (en) * | 2008-04-29 | 2011-01-19 | 上海交通大学 | Method for collaborative user to experience quality improvement in collaborative communication |
| CN101364823B (en) * | 2008-07-17 | 2012-07-25 | 上海交通大学 | Power distribution method based on MCPA threshold in cooperative communication |
| CN101399583B (en) * | 2008-11-07 | 2012-09-05 | 西安电子科技大学 | Collaboration partner selection and pre-coding collaboration communication method in cellular communication system |
| CN106413102A (en) * | 2009-04-28 | 2017-02-15 | 三菱电机株式会社 | Mobile communication system |
| CN106454752A (en) * | 2015-08-06 | 2017-02-22 | 北京信威通信技术股份有限公司 | Broadcast information transmission method in 3GPP V2X communication |
| WO2022179447A1 (en) * | 2021-02-23 | 2022-09-01 | 中兴通讯股份有限公司 | Wireless networking method, wireless device and storage medium |
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2007
- 2007-10-18 CN CNA2007101575449A patent/CN101136724A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101287262B (en) * | 2008-04-29 | 2011-01-19 | 上海交通大学 | Method for collaborative user to experience quality improvement in collaborative communication |
| CN101364823B (en) * | 2008-07-17 | 2012-07-25 | 上海交通大学 | Power distribution method based on MCPA threshold in cooperative communication |
| CN101399583B (en) * | 2008-11-07 | 2012-09-05 | 西安电子科技大学 | Collaboration partner selection and pre-coding collaboration communication method in cellular communication system |
| CN106413102A (en) * | 2009-04-28 | 2017-02-15 | 三菱电机株式会社 | Mobile communication system |
| CN106413102B (en) * | 2009-04-28 | 2020-06-05 | 三菱电机株式会社 | Mobile communication system |
| CN106454752A (en) * | 2015-08-06 | 2017-02-22 | 北京信威通信技术股份有限公司 | Broadcast information transmission method in 3GPP V2X communication |
| WO2022179447A1 (en) * | 2021-02-23 | 2022-09-01 | 中兴通讯股份有限公司 | Wireless networking method, wireless device and storage medium |
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