CN106713209A - Bidirectional communication method and communication module - Google Patents
Bidirectional communication method and communication module Download PDFInfo
- Publication number
- CN106713209A CN106713209A CN201611151973.0A CN201611151973A CN106713209A CN 106713209 A CN106713209 A CN 106713209A CN 201611151973 A CN201611151973 A CN 201611151973A CN 106713209 A CN106713209 A CN 106713209A
- Authority
- CN
- China
- Prior art keywords
- communication module
- ofdm
- communication
- transmission line
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
The invention provides a bidirectional communication method and a communication module. The bidirectional communication method is used for the first communication module; and the first communication module and the second communication module are connected through a transmission line. The bidirectional communication method comprises the steps of generating multiple OFDM (Orthogonal Frequency Division Multiplexing) frames; and transmitting the multiple OFDM frames to the second communication module sequentially through the transmission line according to a preset transmission time interval, wherein the transmission time interval is used for the second communication module to transmit signals to the first communication module through the transmission line. The embodiment can realize single-line bidirectional communication and can reduce cost and designing complexity.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of two-way communication and communication module.
Background technology
OFDM (Orthogonal Frequency Division Multiplexing, OFDM) communication mode
Due to that with the availability of frequency spectrum very high and anti-multipath jamming ability, high-speed data-flow can be become into parallel low rate data streams etc.
Good characteristic, is increasingly becoming a kind of wide variety of communication technology scheme.Additionally, developing rapidly for electronic technology, occurs in that each
The electronic product of function is planted, to realize a series of functions, generally requires to integrate out this electronic product with certain function
New product, generally requires to be in communication with each other completion function between these electronic product modules.Interaction with electronic product as carrier
Communication plan has been developed rapidly, and has been obtained extensively in fields such as scientific research, automotive electronics, smart mobile phone, DTVs
General application.Therefore, research OFDM bidirectional communication schemes are very necessary and important.
In existing OFDM bidirectional communication schemes, due to needing co-ordination between various functions circuit module, it is necessary to
The operations such as instruction, control working condition are mutually sent, two I/O (input/output) ports of respective module are taken, it usually needs
Two transmission lines realize two-way communication.Such conventional solution is as shown in figure 1, typically using A1 mouthfuls and module B of modules A
The B1 mouthfuls of communication of completion A to B, then using A2 mouthful of modules A with the B2 mouthful communication of completion B to A of module B, finally realization pair
To communication.
Since it is designed that this or product limitation in itself, this traditional two-way communication additionally occupies I/O ports,
Very big challenge is caused to originally just relatively more nervous I/O ports, so that enough ports and other functions module can not be provided
Connection, it is difficult to realize appellative function, the not enough situation in I/O ports occur, and the presence of two transmission lines increased cost, very
To sometimes for system communication performance, it has to increase extra circuit function module.
The situation not enough to solve above-mentioned I/O ports, at present, has used the pseudo two-way communication based on single line.
Circuit generally is set between the module for needing two signal exchanges, by control input output port be at two kinds it is different
State, and the different transmission direction of signal is realized under two states, so as to complete to realize the two-way biography of signal on a transmission lines
It is defeated.
Existing OFDM two-way communications, quasi- two-way communication is realized by an input-output line, using being in communication with each other
The circuit set between module carrys out control signal transmission direction, and the I/O port resources that functional module is alleviated to a certain extent are tight
The problem opened.But due to stilling need to increase extra setting circuit, in some instances it may even be possible to because shadow is disturbed in the loop of same module port
Ring communication quality.Therefore, the technical scheme still fails to realize two-way communication truly, and required hardware and software money
Source is relatively costly, unfavorable to bidirectional communication scheme spread, has been difficult under inexpensive state compared with quantum jump, especially with
Area is small, low-power chip design produces more unfavorable, waste very large resource in industry, limits product function even performance.
Therefore, in the urgent need to a kind of low cost of research, the truly OFDM two-ways based on single line of low complex degree
Letter technical scheme.
The content of the invention
It is an object of the invention to provide a kind of two-way communication and communication module, mongline two-way communication can be realized,
And can be with reducing design cost, complexity etc..
In order to solve the above technical problems, embodiments of the present invention provide a kind of two-way communication, it is logical for first
Letter module, the first communication module is connected with second communication module by a transmission lines, and methods described is included：Generation is multiple
Orthogonal frequency division multiplex OFDM frame；And according to default TTI, pass sequentially through the transmission line logical to described second
Letter module sends the multiple OFDM frames；Wherein, the transmission time interval is used for for the second communication module by described
Transmission line is to the first communication module sending signal.
Wherein, the form of the OFDM frames includes：Synchronous head, targeting signal and OFDM symbol.
Wherein, the default TTI is equal to the default duration of OFDM symbol.
Embodiments of the invention mode additionally provides a kind of two-way communication, for first communication module, described first
Communication module is connected with second communication module by a transmission lines, and methods described is included：Received by the transmission line and come from
Multiple orthogonal frequency division multiplex OFDM frames of the second communication module, wherein, exist between the consecutive frame of the multiple OFDM frames
One default TTI；And in the default TTI, by the transmission line to described first
Communication module sends ofdm signal.
Wherein, the form of the OFDM frames includes：Synchronous head, targeting signal and OFDM symbol.
Embodiments of the invention mode additionally provides a kind of communication module, and the communication module passes through with another communication module
One transmission lines are connected, and the communication module includes：Framing unit, for generating multiple orthogonal frequency division multiplex OFDM frames；And
Delivery unit, sends for according to default TTI, passing sequentially through the transmission line to another communication module
The multiple OFDM frames；Wherein, the transmission time interval is used for for another communication module by the transmission line to institute
State communication module sending signal.
Wherein, the form of the OFDM frames includes：Synchronous head, targeting signal and OFDM symbol.
Wherein, the default TTI is equal to the default duration of OFDM symbol.
Embodiments of the invention mode additionally provides a kind of communication module, and the communication module passes through with another communication module
One transmission lines are connected, and the communication module is included：Receiving unit, for being received from described another logical by the transmission line
Believe multiple orthogonal frequency division multiplex OFDM frames of module, wherein, there is a default biography between the consecutive frame of the multiple OFDM frames
Send time interval；And delivery unit, in the default TTI, by the transmission line to described another
One communication module sends ofdm signal.
Wherein, the form of the OFDM frames includes：Synchronous head, targeting signal and OFDM symbol.
The beneficial effect of embodiment of the present invention is：
Embodiment of the present invention, a TTI is inserted between adjacent OFDM frames, so that during the transmission
Between interval communication receiver is available for realize data is activation so that truly realize mongline two-way communication.Also, it is this kind of
Mode only needs to a transmission lines, without setting extra circuit, therefore, it is possible to reduces cost and design complexities.
Brief description of the drawings
Fig. 1 is the schematic diagram of the technical scheme of existing two-way communication；
Fig. 2 is the schematic flow sheet of the first embodiment of two-way communication of the invention；
Fig. 3 be the embodiment of the present invention communication module between by single line connect schematic diagram；
Fig. 4 is the schematic diagram of the data transfer of embodiments of the invention；
Fig. 5 is the schematic flow sheet of the second embodiment of two-way communication of the invention；
Fig. 6 is the structural representation of the first embodiment of communication module of the invention；
Fig. 7 is the structural representation of the second embodiment of communication module of the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to each reality of the invention
The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each implementation method of the invention,
In order that reader more fully understands the application and proposes many ins and outs.But, even if without these ins and outs and base
Many variations and modification in following implementation method, it is also possible to realize the application each claim technical side required for protection
Case.
The two-way communication and communication module of the embodiment of the present invention, can apply to mobile unit, drive recorder, its
His electronic equipment is connected with the scene for realizing various services with smart mobile phone, such as remote control and software upgrading, Yi Ji electricity
The field such as signal transmission between sub- product module.
As shown in Fig. 2 being the schematic flow sheet of the first embodiment of two-way communication of the invention, wherein Fig. 2 is main
It is that two-way communication of the invention is illustrated from the angle of data sender；For example, the method flow of Fig. 2 can be answered
For in the first communication module A shown in Fig. 3.As shown in figure 3, A1 mouthfuls of first communication module A with the B1 of second communication module B
Connected by a transmission lines between mouthful.As shown in Fig. 2 the two-way communication comprises the following steps：
Step 201：First communication module generates multiple OFDM frames.
Wherein, in step 201, the form of each OFDM frame can be as shown in Table 1.As shown in Table 1, each OFDM frame
Including：Synchronous head (SYNC)+targeting signal (Preamble)+OFDM symbol (Symbol).
Table one：
| Synchronous head | Targeting signal | OFDM symbol |
Wherein, synchronous head (SYNC) can be made up of header and load, and wherein header for example includes：Constellation mapping side
Formula QPSK (Quadrature Phase Shift Keying, orthogonal phase shift coding), 16QAM (Quadrature Amplitude
Modulation, quadrature amplitude modulation), 64QAM, 256QAM, interior coding code check 1/2,2/3,3/4,5/6,7/8,1, per frame OFDM
Symbolic number etc..Wherein, targeting signal (Preamble) is used to realize the signal detection of receiving terminal, synchronization, channel estimation, relevant
Demodulation etc..Wherein, OFDM symbol is after targeting signal, and the OFDM symbol in ofdm communication scheme completing bit symbol
Intertexture, channel coding, the data of constellation mapping process and pilot signal are combined.
Step 202：First communication module is communicated according to default TTI by first communication module and second
Wall scroll transmission line between module, to the multiple OFDM frames generated in second communication module successively forwarding step 201.
Wherein, in step 202., there is default TTI between adjacent OFDM frame, as shown in figure 4, in phase
There is a predetermined TTI 402 between adjacent OFDM frames 401.
Wherein, default TTI for example can be the default duration of OFDM symbol；For example, 4
The duration of OFDM symbol.Again for example, in certain embodiment, can have 8 OFDM symbols in an OFDM frame, and it is synchronous
The data duration of head can be 1 duration of OFDM symbol, and the data duration of targeting signal is 1 OFDM symbol
1.25 times of number duration, default TTI can be 4 duration of OFDM symbol.
Wherein, in step 202., after an OFDM frame has been transmitted, another OFDM frame is not transmitted immediately, but
After the preset lime, then another OFDM frame is transmitted.
Embodiment of the present invention, TTI is inserted between adjacent OFDM frames, between causing the delivery time
Realize data is activation every communication receiver is available for, thus truly realize mongline two-way communication.Also, this kind of mode
A transmission lines are only needed to, without setting extra circuit, therefore, it is possible to reduces cost and design complexities.
As shown in figure 5, being the schematic flow sheet of the second embodiment of two-way communication of the invention, wherein Fig. 5 is main
It is the explanation carried out to two-way communication of the invention from the angle of data receiver.Continue by taking Fig. 3 as an example, Fig. 5's is two-way
The second communication module B that communication means can be used in Fig. 3.As shown in figure 5, the two-way communication comprises the following steps：
Step 501：Second communication module receives the multiple OFDM frames from first communication module by transmission line, wherein,
There is default TTI between consecutive frame in the plurality of OFDM frames.
Wherein, it is the step of being engaged with the step 202 in Fig. 2 in step 501, correlative detail therein is stated preceding
It is bright, will not be described here.
Step 502：In the default TTI, second communication module is by the transmission line to the first communication mould
Block sends ofdm signal.
The present embodiment mode, second communication module transmits signal in TTI to first communication module, therefore
Mongline two-way communication truly can be realized.
An application scenarios for reality are named to illustrate two-way communication proposed by the present invention.
By taking a kind of automobile mounted device systems as an example, the automobile carries vehicle device to be included：Camera outside car and it is located at
In-car monitor, wherein camera and monitor is connected by wall scroll transmission line, and uses the mode of OFDM between the two
To be in communication with each other.In the present embodiment, when the camera for being placed in automobile external collects image and voice data, it is to collection
To data carry out framing treatment, to obtain multiple OFDM frames, the plurality of OFDM frames carry gathered data；Then, image
Head sends the plurality of ODFM frames by transmission line to the monitor of automotive interior, wherein when sending, between adjacent OFDM frames
One section of free time (i.e. default TTI) is reserved, in this section of free time, the IP cameras do not send effectively
Data, or the camera is further continued for sending data after the face free time is spaced；And monitor observes shooting hair
During the data brought, arrange parameter being changed according to demand, and being sent to camera and instruct, the wherein instruction is sent in shooting
Head sends in the free time section of data to monitor and completes, and still uses same transmission line.Hereby it is achieved that mongline bidirectional is logical
Letter method, and the transmission line can be used existing power line, with save resources.
As shown in fig. 6, being the structural representation of the embodiment of communication module of the invention 600, it includes：Framing unit
601, for generating multiple orthogonal frequency division multiplex OFDM frames；And delivery unit 602, for according between the default delivery time
Every passing sequentially through the transmission line and send the multiple OFDM frames to another communication module；Wherein, between the launch time
Every for supplying another communication module by the transmission line to the communication module sending signal.Wherein, Fig. 6 is and Fig. 2
Embodiment of the method relative to device embodiment, therefore correlative detail will not be described here described above.
As shown in fig. 7, being the structural representation of the embodiment of communication module of the invention 700, it includes：Receiving unit
701, for receiving the multiple orthogonal frequency division multiplex OFDM frames from another communication module by the transmission line, wherein,
There is a default TTI between the consecutive frame of the multiple OFDM frames；And delivery unit 702, for described
In default TTI, ofdm signal is sent to another communication module by the transmission line.Wherein, Fig. 7 is
With the embodiment of the method for Fig. 5 relative to device embodiment, therefore correlative detail will not be described here described above.
One of ordinary skill in the art will appreciate that all or part of flow in realizing above-described embodiment method, can be
The hardware of correlation is instructed to complete by computer program, described program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
Claims (10)
1. a kind of two-way communication, for first communication module, it is characterised in that the first communication module communicates with second
Module is connected by a transmission lines, and methods described is included：
The multiple orthogonal frequency division multiplex OFDM frames of generation；And
According to default TTI, pass sequentially through the transmission line and send the multiple to the second communication module
OFDM frames；
Wherein, the TTI is used for for the second communication module by the transmission line to the described first communication mould
Block sending signal.
2. two-way communication according to claim 1, it is characterised in that the form of the OFDM frames includes：Synchronous head,
Targeting signal and OFDM symbol.
3. two-way communication according to claim 1, it is characterised in that the default TTI is equal to pre-
If the duration of individual OFDM symbol.
4. a kind of two-way communication, for first communication module, it is characterised in that the first communication module communicates with second
Module is connected by a transmission lines, and methods described is included：
Multiple orthogonal frequency division multiplex OFDM frames from the second communication module are received by the transmission line, wherein, it is described
There is a default TTI between the consecutive frame of multiple OFDM frames；And
In the default TTI, ofdm signal is sent to the first communication module by the transmission line.
5. two-way communication according to claim 4, it is characterised in that the form of the OFDM frames includes：Synchronous head,
Targeting signal and OFDM symbol.
6. a kind of communication module, it is characterised in that the communication module is connected with another communication module by a transmission lines, institute
Stating communication module includes：
Framing unit, for generating multiple orthogonal frequency division multiplex OFDM frames；And
Delivery unit, for according to default TTI, passing sequentially through the transmission line to another communication module
Send the multiple OFDM frames；
Wherein, the transmission time interval is used to be sent out to the communication module by the transmission line for another communication module
The number of delivering letters.
7. communication module according to claim 6, it is characterised in that the form of the OFDM frames includes：It is synchronous head, leading
Signal and OFDM symbol.
8. communication module according to claim 6, it is characterised in that the default TTI is equal to default
The duration of OFDM symbol.
9. a kind of communication module, it is characterised in that the communication module is connected with another communication module by a transmission lines, institute
Communication module is stated to include：
Receiving unit, for receiving the multiple orthogonal frequency division multiplex OFDMs from another communication module by the transmission line
Frame, wherein, there is a default TTI between the consecutive frame of the multiple OFDM frames；And
Delivery unit, in the default TTI, by the transmission line to another communication module
Send ofdm signal.
10. communication module according to claim 9, it is characterised in that the form of the OFDM frames includes：It is synchronous head, preceding
Lead signal and OFDM symbol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611151973.0A CN106713209A (en) | 2016-12-14 | 2016-12-14 | Bidirectional communication method and communication module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611151973.0A CN106713209A (en) | 2016-12-14 | 2016-12-14 | Bidirectional communication method and communication module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106713209A true CN106713209A (en) | 2017-05-24 |
Family
ID=58935773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611151973.0A Pending CN106713209A (en) | 2016-12-14 | 2016-12-14 | Bidirectional communication method and communication module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106713209A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988840A (en) * | 2018-06-12 | 2018-12-11 | 北京车和家信息技术有限公司 | Mongline bidirectional wake-up circuit and vehicle |
| CN110533584A (en) * | 2019-09-03 | 2019-12-03 | 周彩章 | A kind of image reconstructing method, system and terminal device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102263724A (en) * | 2010-10-29 | 2011-11-30 | 北京感通科技有限公司 | Data transmission method applicable to two-way transmission of cable television network |
| CN103701746A (en) * | 2013-11-21 | 2014-04-02 | 郑州三和视讯技术有限公司 | Time-division two-way narrow-band common-frequency multi-service wireless transmission method |
-
2016
- 2016-12-14 CN CN201611151973.0A patent/CN106713209A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102263724A (en) * | 2010-10-29 | 2011-11-30 | 北京感通科技有限公司 | Data transmission method applicable to two-way transmission of cable television network |
| CN103701746A (en) * | 2013-11-21 | 2014-04-02 | 郑州三和视讯技术有限公司 | Time-division two-way narrow-band common-frequency multi-service wireless transmission method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988840A (en) * | 2018-06-12 | 2018-12-11 | 北京车和家信息技术有限公司 | Mongline bidirectional wake-up circuit and vehicle |
| CN108988840B (en) * | 2018-06-12 | 2023-02-21 | 北京车和家信息技术有限公司 | Single-wire bidirectional wake-up circuit and vehicle |
| CN110533584A (en) * | 2019-09-03 | 2019-12-03 | 周彩章 | A kind of image reconstructing method, system and terminal device |
| CN110533584B (en) * | 2019-09-03 | 2023-10-20 | 深圳市迪威码半导体有限公司 | Image reconstruction method, system and terminal equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20230253986A1 (en) | Method for Auto-Detection of WLAN Packets using STF | |
| CN1863181B (en) | Method and system for multiplexing data and control information in wireless communication systems | |
| CN109275191B (en) | Transmission method and device thereof | |
| CN103404063B (en) | Launch in a wireless communication system and receive the method and apparatus confirmed | |
| CN103229447B (en) | Based in the wireless communication system of TDD for ACK/NACK send method and apparatus | |
| CN101433121B (en) | Mobile communication system, base station device, and mobile communication system frequency allocation method | |
| CN108235442B (en) | Method and equipment in UE (user Equipment) and base station | |
| CN109891955A (en) | Terminal and communication means | |
| CN100490367C (en) | Base station equipment and terminal equipment | |
| US20220078794A1 (en) | Method for transmitting uplink signal, terminal and network device | |
| CN105391528A (en) | Method and apparatus for transmitting ACK/NACK in a TDD-based wireless communication system | |
| CN104272643A (en) | Phich transmission in time divison duplex systems | |
| CN105594160B (en) | Use the high-speed CAN communication system of bandpass modulation | |
| US11490332B2 (en) | Multiplexing of wake-up signals | |
| JP2022511244A (en) | Communication equipment, communication methods, and integrated circuits | |
| CN105191189A (en) | Method for mitigating interference when changing use of dynamic resource in wireless communication system, and device therefor | |
| CN105612793A (en) | Method and apparatus of controlling for uplink scheduling and HARQ timing | |
| CN112306941A (en) | Transmission method, electronic device and storage medium | |
| CN107294673A (en) | A kind of ascending transmission method and device | |
| CN106713209A (en) | Bidirectional communication method and communication module | |
| KR20200138747A (en) | Method and apparatus for transmitting uplink control information | |
| CN102142916B (en) | Multiplexing method and multiplexing equipment of reference signal | |
| CN105245308A (en) | Adaptive modulation and coding method | |
| CN107493604A (en) | The method and apparatus of frame structure configuration | |
| CN101827400A (en) | Method and system for transmitting channel quality indicator information |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
|
| RJ01 | Rejection of invention patent application after publication |