CN106535230B - VHF wireless communication network Design of Routing Protocol method based on OFDM technology - Google Patents
VHF wireless communication network Design of Routing Protocol method based on OFDM technology Download PDFInfo
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- CN106535230B CN106535230B CN201611120901.XA CN201611120901A CN106535230B CN 106535230 B CN106535230 B CN 106535230B CN 201611120901 A CN201611120901 A CN 201611120901A CN 106535230 B CN106535230 B CN 106535230B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
Abstract
The invention belongs to wireless networking technology fields, disclose a kind of VHF wireless communication network Design of Routing Protocol method based on OFDM technology, and the network routing agreement of the VHF wireless communication carries out the transmission of information using particular frame format；The particular frame format includes: information start bit, message length position, subcarrier number position, circulating prefix-length position, modulation system position, code type indicating bit, message level position, message address position, information data position, information checking position and end of message position；It can reduce the difficulty of common networking and improve networking capability, user no longer needs to carry out complicated protocol development and setting, greatly reduces implementation cost.
Description
Technical field
The invention belongs to wireless networking technology fields, more particularly to one kind to be based on OFDM (Orthogonal Frequency
Division Multiplexing, orthogonal frequency division multiplexing) technology VHF (Very High Frequency, very high frequency(VHF)) it is wireless
Constructing communication network Routing Protocol, VHF very high frequency(VHF) refer to frequency band in the radiobeam of 30MHz to 300MHz.
Background technique
Wireless networking is a kind of novel radio mobile radio communication, its network infrastructure independent of any fixation, can
To regard the interim autonomous system for the multi-hop being made of one group of mobile host with radio network interface as.
It is mentioned there are two types of Ad Hoc agreements in bibliography " Wireless Ad Hoc network architecture and Routing Protocol are studied "
Different network structures, each node of planar structure require to know the routing for reaching other nodes, result in itself
Scalability it is poor；The nodal function of hierarchical structure is powerful, but algorithm realizes routing that is complex and obtaining and is not usually
Optimization route.
Bibliography " between ultra short wave Ad Hoc network net Design of Routing Protocol and realize " although in the KTRP agreement that proposes can be with
Realize wireless self-networking, but it makes to turn by other nodes with the node of direct communication originally in communication process
Hair could communicate, that is, produce detour transmission, reduce efficiency of transmission.
And bibliography " wireless self-organization network KTRP kernel tree Routing Protocol optimizing research " proposes after improving
Although KTRP agreement solves the problems, such as this deficiency, but in its message transmitting procedure, transfer function is single, and information is necessary
It is handled by the superlative degree, is unfavorable for multifunction of the information in transmission process.
Summary of the invention
The present invention provides a kind of VHF wireless communication network Design of Routing Protocol method based on OFDM technology, can reduce
The difficulty of common networking and networking capability is improved, user no longer needs to carry out complicated Routing Protocol exploitation and setting, greatly drops
Low implementation cost.
In order to achieve the above objectives, the present invention is realised by adopting the following technical scheme.
A kind of VHF wireless communication network Design of Routing Protocol method based on OFDM technology, which is characterized in that the VHF
Wireless communication network Routing Protocol carries out the transmission of information using particular frame format；The particular frame format includes: information starting
Position, message length position, subcarrier number position, circulating prefix-length position, modulation system position, code type indicating bit, information etc.
Level, message address position, information data position, information checking position and end of message position；
Wherein, the information start bit is used to indicate the beginning of a frame of data information；
The message length position is used to indicate a frame of data information from the message level position to the information checking position
Length；
The subcarrier number position is used to indicate in message transmitting procedure, subcarrier used by the OFDM technology
Number；
The circulating prefix-length position is used to indicate the length of cyclic prefix in an OFDM symbol；
The modulation system position is used to indicate signal modulation mode used by the OFDM technology；
The code type indicating bit is used to indicate code type used in the OFDM technology；
The message level position is used to indicate the grade of the equipment of transmission data information in a network, or is used to indicate institute
It states the grade of data information in a network and sends the grade of the equipment of the data information in a network；
The message address position is used to indicate the address sent the equipment of the data information in a network and the number
It is believed that the address of the purpose equipment of breath arrival in a network；
The information data position is used to indicate the specifying information that the data information transmits in a network；
The information checking position is for detecting mistake of the data information in network transmission process；
The end of message position is used to indicate the end of a frame of data information.
The characteristics of technical solution of the present invention and further improvement are as follows:
(1) the message level position includes the levels such as device levels position and data information；
The device levels position is used to indicate the grade of the equipment of transmission data information in a network；
The levels such as the data information are used to indicate the grade of the data information in a network, and send the data
The grade of the equipment of information in a network.
(2) signal modulation mode used by the OFDM technology includes at least: QPSK modulation, 16QAM modulation, 64QAM
Modulation.
(3) type of the error correcting code includes: the convolutional code of 2/3 code rate, the convolutional code of 1/2 code rate, Turbo code, LDPC
Code.
(4) equipment in network includes at least base station, relay router, terminal；
The device levels of the base station in a network are highest level；Directly receive the relaying for the information that the base station is sent
The device levels of router in a network are level-one transistroute, and needing to forward by n times could receive what the base station was sent
The device levels of the relay router of information in a network are N-1 grades of transistroutes, the device levels of the terminal in a network
For the lowest class.
(5) when needing mutually to send data information between the equipment with identical device levels, then allow directly mutually to turn
Send out data information；
When needing mutually to send data information between high-grade equipment and the inferior grade equipment of crossgrade, allow high-grade set
Standby direct crossgrade sends data information or the direct crossgrade of inferior grade equipment to described high-grade to the inferior grade equipment
Equipment sends data information.
(6) setting of the levels such as described data information is divided into both of which:
The first mode: the levels such as the data information are not set；
Under this kind of mode, the relay router in network is only forwarded data information；The data that base station is sent
Information is forwarded to terminal, or the data information that terminal is sent is forwarded to base station；
Second of mode: the levels such as the data information are set；
Under this kind of mode, if the levels such as data information that terminal is sent are higher than the device levels position of relay router,
The relay router forwards the upward first device of the data information；
If the levels such as the data information that terminal is sent are lower than the device levels position of relay router, the relay router
The data information is performed corresponding processing, and does not have to forward the upward first device of the data information.
The present invention provides a kind of VHF wireless communication network Design of Routing Protocol method based on OFDM technology, routing association
View carries out Networking Design, including information start bit, message length position, message level position, message address using specific frame format
Position, information data position, information checking position and end of message position；Message level position includes device levels position and data information etc. again
Level；After VHF network routing agreement provided by the present invention, networking capability is not only increased, and avoids common group
The high complexity of net.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the particular frame format schematic diagram that VHF wireless communication network Routing Protocol provided in an embodiment of the present invention uses；
Fig. 2 is networking mode schematic diagram used by the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
OFDM main thought is: breaking a channel into several orthogonal sub-channels, high-speed data signal is converted into parallel low
Fast sub-data flow, is modulated to and is transmitted on each of the sub-channels.Orthogonal signalling can be divided in receiving end by the relevant technologies
It opens, interfering with each other between subchannel can be reduced in this way.Signal bandwidth on every sub-channels is less than the correlation bandwidth of channel, because
Flatness decline can be regarded on this every sub-channels as, so as to eliminate intersymbol interference, and due to the band of every sub-channels
Width is only the sub-fraction of former channel width, and channel equalization becomes relatively easy.
The embodiment of the present invention provides a kind of VHF wireless communication network Design of Routing Protocol method based on OFDM technology, institute
State the transmission that VHF wireless communication network Routing Protocol carries out information using particular frame format；As shown in Figure 1,
The particular frame format includes: information start bit, message length position, subcarrier number position, circulating prefix-length position,
Modulation system position, code type indicating bit, message level position, message address position, information data position, information checking position and letter
Cease stop bits；
Wherein, the information start bit is used to indicate the beginning of a frame of data information；
The message length position is used to indicate a frame of data information from the message level position to the information checking position
Length；
The subcarrier number position is used to indicate in message transmitting procedure, subcarrier used by the OFDM technology
Number；
The circulating prefix-length position is used to indicate the length of cyclic prefix in an OFDM symbol；
The modulation system position is used to indicate signal modulation mode used by the OFDM technology；
Signal modulation mode used by the OFDM technology includes at least: QPSK modulation, 16QAM modulation, 64QAM tune
System.
The code type indicating bit is used to indicate code type used in the OFDM technology；
The type of the error correcting code includes: the convolutional code of 2/3 code rate, the convolutional code of 1/2 code rate, Turbo code, LDPC code.
The message level position is used to indicate the grade of the equipment of transmission data information in a network, or is used to indicate institute
It states the grade of data information in a network and sends the grade of the equipment of the data information in a network；
The message address position is used to indicate the address sent the equipment of the data information in a network and the number
It is believed that the address of the purpose equipment of breath arrival in a network；
The information data position is used to indicate the specifying information that the data information transmits in a network；
The information checking position is for detecting mistake of the data information in network transmission process；
The end of message position is used to indicate the end of a frame of data information.
Specifically, the message level position includes the levels such as device levels position and data information；
The device levels position is used to indicate the grade of the equipment of transmission data information in a network；
The levels such as the data information are used to indicate the grade of the data information in a network, and send the data
The grade of the equipment of information in a network.
Again specifically, the equipment in network includes at least base station, relay router, terminal；
The device levels of the base station in a network are highest level；Directly receive the relaying for the information that the base station is sent
The device levels of router in a network are level-one transistroute, and needing to forward by n times could receive what the base station was sent
The device levels of the relay router of information in a network are N-1 grades of transistroutes, the device levels of the terminal in a network
For the lowest class.
It should be noted that when needing mutually to send data information between the equipment with identical device levels, then it can be with
Directly mutually forward data information；
When needing mutually to send data information between high-grade equipment and the inferior grade equipment of crossgrade, high-grade equipment can
With direct crossgrade to the inferior grade equipment send data information or inferior grade equipment can directly crossgrade to the height
Grade equipment sends data information.
It is above-mentioned about between equipment crossgrade transmit premise be, two equipment of crossgrade geographically distance than
It is relatively close.
The message address position is used to indicate the address sent the equipment of the data information in a network and the number
It is believed that the address of the purpose equipment of breath arrival in a network.
It should also be noted that, the setting of the levels such as described data information is divided into both of which:
The first mode: the levels such as the data information are not set；
Under this kind of mode, the relay router in network is only forwarded data information；The data that base station is sent
Information is forwarded to terminal, or the data information that terminal is sent is forwarded to base station；
Second of mode: the levels such as the data information are set；
Under this kind of mode, if the levels such as data information that terminal is sent are higher than the device levels position of relay router,
The relay router forwards the upward first device of the data information；
If the levels such as the data information that terminal is sent are lower than the device levels position of relay router, the relay router
The data information is performed corresponding processing, and does not have to forward the upward first device of the data information.
The information data position is used to indicate the specifying information that the data information transmits in a network；
The information checking position is for detecting mistake of the data information in network transmission process；Pass through one
Other positions in frame of data information calculate and obtain, for examining the correctness of a frame of data information.
The end of message position is used to indicate the end of a frame of data information.
Illustratively, it is illustrated in figure 2 networking mode used by the embodiment of the present invention, the end message being closer can
To be directly transmitted to the interaction that information is completed in base station by level-one transistroute, it is not necessarily required to by second level transistroute；Away from
The interaction that information is completed in base station is transmitted to by level-one transistroute by second level transistroute from farther away end message.
As shown in Fig. 2, can divide into both of which in setting for the levels such as data information: one mode is does not distinguish letter
The levels such as breath.Transistroute equipment only plays transmitting effect, and the transmission order of base station is passed by base-station node by transistroute always
Terminal device is transported to, the commands in return of terminal device is transmitted to base-station node by transistroute by terminal device always.It sends
Order is transmitted from high-grade to inferior grade, and commands in return is from inferior grade to high-grade transmission.Another mode is to distinguish information etc.
Level.The function of transistroute equipment includes transmission information (transistroute function) and processing information (base station functions).If number
It is higher than the device levels of transistroute according to message level, then transistroute equipment is in transistroute function, is used for transmission information；
If data information grade is lower than transistroute device levels, transistroute equipment is in base station functions, for handling information.
As shown in Fig. 2, a kind of situation is that network scenarios is simpler, then using the method for not distinguishing the levels such as data information.
In this case, grade is not distinguished between different information, information is transmitted to base station by transistroute by terminal always,
Terminal is back to by transistroute after base station progress respective handling, completes the processing and transmission of information.Another situation is net
Network scene is more complex, then using the method for distinguishing the levels such as data information.In this case, different data informations according to
The demand at family can set its equal level.Illustratively, more simply, can be with without being transmitted to the data information of base-station node processing
It is set as lower grade；Information that is more complex, must being handled by greater degree equipment can be set to higher level.According to data
The interaction of information can be completed without being transmitted to base-station node in the setting of message level position and device levels position, data information, real
The multifunction of networking is showed.The specific treatment measures of transmission information are set by the user, different user, different scenes are to information
Processing it is different.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (7)
1. a kind of VHF wireless communication network Design of Routing Protocol method based on OFDM technology, which is characterized in that the VHF without
Line constructing communication network Routing Protocol carries out the transmission of information using particular frame format；The particular frame format includes: information start bit,
Message length position, subcarrier number position, circulating prefix-length position, modulation system position, code type indicating bit, message level
Position, message address position, information data position, information checking position and end of message position；
Wherein, the information start bit is used to indicate the beginning of a frame of data information；
The message length position is used to indicate length of the frame of data information from the message level position to the information checking position；
The subcarrier number position is used to indicate in message transmitting procedure, subcarrier number used by the OFDM technology；
The circulating prefix-length position is used to indicate the length of cyclic prefix in an OFDM symbol；
The modulation system position is used to indicate signal modulation mode used by the OFDM technology；
The code type indicating bit is used to indicate code type used in the OFDM technology；
The message level position is used to indicate the grade of the equipment of transmission data information in a network, or is used to indicate the number
It is believed that ceasing grade in a network and sending the grade of the equipment of the data information in a network；
The message address position is used to indicate the address sent the equipment of the data information in a network and data letter
Cease the address of the purpose equipment reached in a network；
The information data position is used to indicate the specifying information that the data information transmits in a network；
The information checking position is for detecting mistake of the data information in network transmission process；
The end of message position is used to indicate the end of a frame of data information.
2. a kind of VHF wireless communication network Design of Routing Protocol method based on OFDM technology according to claim 1,
It is characterized in that, the message level position includes the levels such as device levels position and data information；
The device levels position is used to indicate the grade of the equipment of transmission data information in a network；
The levels such as the data information are used to indicate the grade of the data information in a network, and send the data information
Equipment grade in a network.
3. a kind of VHF wireless communication network Design of Routing Protocol method based on OFDM technology according to claim 1,
It is characterized in that, signal modulation mode used by the OFDM technology includes at least: QPSK modulation, 16QAM modulation, 64QAM tune
System.
4. a kind of VHF wireless communication network Design of Routing Protocol method based on OFDM technology according to claim 1,
It is characterized in that, the type of the error correcting code includes: the convolutional code of 2/3 code rate, the convolutional code of 1/2 code rate, Turbo code, LDPC code.
5. a kind of VHF wireless communication network Design of Routing Protocol side based on OFDM technology according to claim 1 or 2
Method, which is characterized in that the equipment in network includes at least base station, relay router, terminal；
The device levels of the base station in a network are highest level；Directly receive the transistroute for the information that the base station is sent
The device levels of device in a network are level-one transistroute, need to forward the information that could be received the base station and send by n times
Relay router device levels in a network be N-1 grade transistroutes, the device levels of the terminal in a network is most
Inferior grade.
6. a kind of VHF wireless communication network Design of Routing Protocol method based on OFDM technology according to claim 5,
It is characterized in that, when needing mutually to send data information between the equipment with identical device levels, then allows directly mutually forwarding
Data information；
When needing mutually to send data information between high-grade equipment and the inferior grade equipment of crossgrade, allow high-grade equipment straight
It connects crossgrade and sends data information or the direct crossgrade of inferior grade equipment to the high-grade equipment to the inferior grade equipment
Send data information.
7. a kind of VHF wireless communication network Design of Routing Protocol method based on OFDM technology according to claim 2,
It is characterized in that, the setting of the levels such as described data information is divided into both of which:
The first mode: the levels such as the data information are not set；
Under this kind of mode, the transistroute router in network is only forwarded data information；The data that base station is sent
Information is forwarded to terminal, or the data information that terminal is sent is forwarded to base station；
Second of mode: the levels such as the data information are set；
Under this kind of mode, if the levels such as data information that terminal is sent are higher than the device levels position of transistroute router,
The transistroute router forwards the upward first device of the data information；
If the levels such as the data information that terminal is sent are lower than the device levels position of transistroute router, the transistroute road
The data information is performed corresponding processing by device, and does not have to forward the upward first device of the data information.
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| CN101399628A (en) * | 2007-09-30 | 2009-04-01 | 大唐移动通信设备有限公司 | Transmission method and device suitable for coverage requirement in time division duplexing system |
| CN101742666A (en) * | 2008-11-07 | 2010-06-16 | 中兴通讯股份有限公司 | Multi-carrier-based method for mapping resource |
| CN102811191A (en) * | 2011-05-31 | 2012-12-05 | 华为技术有限公司 | Data transmission method and device |
| CN104853385A (en) * | 2015-05-25 | 2015-08-19 | 电子科技大学 | Dynamic mechanism for efficient information transmission in WIFI system based on OFDMA technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4935202B2 (en) * | 2006-06-20 | 2012-05-23 | 富士通株式会社 | Communications system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101399628A (en) * | 2007-09-30 | 2009-04-01 | 大唐移动通信设备有限公司 | Transmission method and device suitable for coverage requirement in time division duplexing system |
| CN101742666A (en) * | 2008-11-07 | 2010-06-16 | 中兴通讯股份有限公司 | Multi-carrier-based method for mapping resource |
| CN102811191A (en) * | 2011-05-31 | 2012-12-05 | 华为技术有限公司 | Data transmission method and device |
| CN104853385A (en) * | 2015-05-25 | 2015-08-19 | 电子科技大学 | Dynamic mechanism for efficient information transmission in WIFI system based on OFDMA technology |
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