CN106253944A - The method of information transmission and node - Google Patents

Abstract

The method that The embodiment provides the transmission of a kind of information, including: physical layer signaling is processed, the physical layer signaling after being processed；Data message is processed, the data message after being processed；Physical layer signaling after frame origin identification, described process and the data message after described process are carried out multiplexing, obtains the code stream after multiplexing；Code stream after described multiplexing is modulated, the signal after being modulated；Signal after lead code and described modulation is carried out multiplexing, obtains digital signal；Described digital signal is processed, obtains launching signal；Send described transmitting signal.Visible, the embodiment of the present invention proposes a kind of brand-new internodal interconnected method, and the method disclosure satisfy that low-power consumption, and wide area covers, and accesses magnanimity terminal and the demand of low cost.

Description

The method of information transmission and node

Technical field

The present invention relates to the communications field, a kind of method transmitted more particularly, to information and node.

Background technology

Along with the gradually rise of smart city, increasing equipment needs to gather data, and will be adopted by communication link Collect to data upload onto the server.Further, the data uploaded can be analyzed by the server of operator, it is thus possible to Enough offer for each equipment preferably services or more effectively manages.A lot of equipment does not has independent power supply, but by electricity Pond is powered, it is therefore desirable to the transmission method of a kind of low-power consumption ensures that the data collected are uploaded onto the server by equipment.

In general, the frequency of devices collect data is the lowest, and the data volume every time gathered is the least, in order to reduce whole system Construction cost, it is proposed that a concentrator manages substantial amounts of equipment.In some applications, the attenuation of communication link is very Greatly, need by the way of mesh (Mesh), improve coverage and the reliability of system.

Existing communication system WiFi, Bluetooth and ZigBee etc., communication distance is short, it is impossible to carry out wide area covering.Separately A kind of cellular wide area network technology GSM, 3G and LTE etc., power consumption is too big, and cost is high, is also not suitable for devices interconnect application.Therefore, anxious Need a kind of new communication modes, to meet equipment low-power consumption, and the wide demand covered.

Summary of the invention

The present invention is proposed in view of the problems referred to above.The invention provides method and the node of a kind of information transmission, this Plant communication modes and disclosure satisfy that low-power consumption and the wide demand covered.

First aspect, it is provided that the method for a kind of information transmission, including:

Physical layer signaling is processed, the physical layer signaling after being processed；

Data message is processed, the data message after being processed；

Physical layer signaling after frame origin identification, described process and the data message after described process are carried out multiplexing, Obtain the code stream after multiplexing；

Code stream after described multiplexing is modulated, the signal after being modulated；

Signal after lead code and described modulation is carried out multiplexing, obtains digital signal；

Described digital signal is processed, obtains launching signal；

Send described transmitting signal.

Exemplarily, in a kind of possible implementation, described physical layer signaling is processed, after being processed Physical layer signaling, including: described physical layer signaling is scrambled, and carries out channel code and interleaving, the thing after described intertexture successively Reason layer signaling scrambling is the physical layer signaling after described process；

Described data message is processed, the data message after being processed, including: described data message is scrambled, And carrying out channel code and interleaving successively, the data message after described intertexture is the data message after described process.

Exemplarily, in a kind of possible implementation, to the method for the scrambling of described physical layer signaling with to described The method of the scrambling of data message is identical or different；And/or, to the method for the chnnel coding of described physical layer signaling with to described The method of the chnnel coding of data message is identical or different；And/or, to the method for the intertexture of described physical layer signaling with to described The method of the intertexture of data message is identical or different.

Exemplarily, in a kind of possible implementation, described code stream after described multiplexing is modulated, is adjusted Signal after system, including: the code stream after multiplexing is carried out planisphere mapping, and the signal after the mapping of described planisphere is carried out directly Connect sequence spread spectrum modulation, the signal after being modulated.

Wherein, described planisphere map include following at least one: BPSK, QPSK, QAM and difference map.

Wherein, the spread spectrum code that described band spectrum modulation is used is pseudorandom m-sequence or Gold code.

Exemplarily, in a kind of possible implementation, described described digital signal is processed, obtain launching letter Number, including:

By described digital signal after digital-to-analogue conversion, be converted to analogue signal；

By described analogue signal by after up-conversion, generate radiofrequency signal；

By described radiofrequency signal after power amplification, obtain described transmitting signal.

Exemplarily, in a kind of possible implementation, described lead code includes the Zadoff-Chu sequence repeating R2 time Row and repeat the Zadoff-Chu conjugate sequence of R3 time, wherein, R2 and R3 is positive integer.

Wherein, described Zadoff-Chu sequence is expressed as:

$x_u=e^{-\frac{j\mathrm{\π}un(n+2p+1)}{F}},$

Wherein, j is imaginary unit, and p is integer, u and F is relatively prime, and 0 <u < F.

Second aspect, it is provided that the method for a kind of information transmission, including:

Receive and launch signal；

Described transmitting signal is processed, obtains digital signal；

Described digital signal is carried out synchronization process, the signal after being synchronized；

Signal after described synchronization is processed, obtains physical layer signaling.

Exemplarily, in a kind of possible implementation, also include: at the signal after physical layer signaling Reason, obtains data message.

Exemplarily, in a kind of possible implementation, described signal after physical layer signaling is processed, obtain Data message, including: if correct to the verification of described physical layer signaling, and determine according to filtering rule and need to receive load, the most right Signal after described physical layer signaling is demodulated, deinterleaves, channel-decoding and descrambling, obtains described data message.

Exemplarily, in a kind of possible implementation, described described digital signal is carried out synchronization process, obtain with Signal after step, including:

Obtain the first Zadoff-Chu sequence in described digital signal and a Zadoff-Chu conjugate sequence；

According to described first Zadoff-Chu sequence and a described Zadoff-Chu conjugate sequence, determine frequency deviation and symbol Deviation；

According to described frequency deviation and described symbol deviation, described digital signal is compensated；

Signal after described compensation is carried out de-spreading operation, obtains the signal after described synchronization.

Exemplarily, in a kind of possible implementation, described according to described first Zadoff-Chu sequence with described Oneth Zadoff-Chu conjugate sequence, determines frequency deviation and symbol deviation, including:

According to described first Zadoff-Chu sequence and the 2nd default Zadoff-Chu conjugate sequence, by quick Fu Leaf transformation calculates first frequency；

According to a described Zadoff-Chu conjugate sequence and the second default Zadoff-Chu sequence, by quick Fu Leaf transformation calculates second frequency；

According to described first frequency and described second frequency, it is calculated described frequency deviation and described symbol deviation.

Exemplarily, in a kind of possible implementation, described described transmitting signal is processed, obtain numeral letter Number, including:

By described transmitting signal after low noise is amplified, obtain radiofrequency signal；

By described radiofrequency signal by, after down coversion, obtaining analogue signal；

By described analogue signal after analog digital conversion, obtain described digital signal.

The third aspect, it is provided that a kind of node, including: the first processing module, the second processing module, the first Multiplexing module, Modulation module, the second Multiplexing module, the 3rd processing module and sending module.This node may be used for realizing aforementioned first aspect or The method of the transmission of the information described in arbitrary implementation of person's first aspect.

Fourth aspect, it is provided that a kind of computer chip, this computer chip includes processor, when this processor performs generation During code, it is possible to the method realizing the transmission of the information described in arbitrary implementation of aforementioned first aspect or first aspect.

5th aspect, it is provided that a kind of node, including: receiver module, the first processing module, synchronization module and second process Module.This node may be used for realizing the transmission of the information described in arbitrary implementation of aforementioned second aspect or second aspect Method.

6th aspect, it is provided that a kind of computer chip, this computer chip includes processor, when this processor performs generation During code, it is possible to the method realizing the transmission of the information described in arbitrary implementation of aforementioned second aspect or second aspect.

Described physical layer signaling in any of the above-described aspect of the present invention includes length field, controls territory, identification field and verification territory, Wherein, described identification field filters described data message for physical layer.

The binary sequence that described frame origin identification is R1 bit in any of the above-described aspect of the present invention, wherein, R1 is just Integer.

Visible, the embodiment of the present invention proposes a kind of brand-new internodal interconnected method, and the method disclosure satisfy that low merit Consumption, wide area covers, and accesses magnanimity terminal and the demand of low cost.

Accompanying drawing explanation

By combining accompanying drawing, the embodiment of the present invention is described in more detail, above-mentioned and other purpose of the present invention, Feature and advantage will be apparent from.Accompanying drawing is used for providing being further appreciated by the embodiment of the present invention, and constitutes explanation A part for book, is used for explaining the present invention together with the embodiment of the present invention, is not intended that limitation of the present invention.In the accompanying drawings, Identical reference number typically represents same parts or step.

Fig. 1 is a schematic diagram of the Star network of the embodiment of the present invention；

Fig. 2 is a schematic diagram of the mesh of the embodiment of the present invention；

Fig. 3 is an indicative flowchart of the method for the information transmission of the embodiment of the present invention；

Fig. 4 is a schematic diagram of the frame structure of the embodiment of the present invention；

Fig. 5 is another indicative flowchart of the method for the information transmission of the embodiment of the present invention；

Fig. 6 is another indicative flowchart of the method for the information transmission of the embodiment of the present invention；

Fig. 7 is another indicative flowchart of the method for the information transmission of the embodiment of the present invention；

Fig. 8 is another indicative flowchart of the method for the information transmission of the embodiment of the present invention；

Fig. 9 is a structured flowchart of the node of the embodiment of the present invention；

Figure 10 is another structured flowchart of the node of the embodiment of the present invention.

Detailed description of the invention

So that the object, technical solutions and advantages of the present invention become apparent from, describe root below with reference to accompanying drawings in detail Example embodiment according to the present invention.Obviously, described embodiment be only a part of embodiment of the present invention rather than this Bright whole embodiments, it should be appreciated that the present invention is not limited by example embodiment described herein.Described in the present invention The embodiment of the present invention, all other embodiments that those skilled in the art are obtained in the case of not paying creative work All should fall under the scope of the present invention.

Equipment in the embodiment of the present invention is referred to as terminal unit, terminal, mobile terminal, mobile device etc., this Bright this is not limited.The data collected can be uploaded onto the server by equipment by concentrator, and similarly, concentrator is with permissible The information of server is sent to corresponding equipment.Wherein, the communication system between equipment, concentrator and server can be star The networking model of type net, or can also be the networking model of mesh.

It is illustrated in figure 1 a schematic diagram of Star network.Fig. 1 shows server 10, concentrator 20 and terminal 30. Wherein, terminal 30 includes terminal 1, terminal 2 ..., terminal N.Dotted line shown in Fig. 1 represents between concentrator 20 and terminal 30 Communication link.

It is illustrated in figure 2 a schematic diagram of mesh.Fig. 2 shows server 10, concentrator 20 and terminal 30. Wherein, terminal 30 includes terminal 1, terminal 2 ..., terminal N.And terminal 3 to terminal N need to be through terminal 1 or terminal 2 and concentrator 20 communicate, and i.e. interconnect between terminal so that interconnect for multi-hop between terminal 3 to terminal N and concentrator 20.Shown in Fig. 2 Dotted line represent the communication link between concentrator 20 and terminal 30 and the communication link between two terminals 30.

It should be noted that Fig. 2 is only illustrative an example, such as, between terminal N and concentrator 20, can have the level of more layers Connection relation, the quantity of the terminal of each layer can be more or less, and this is not limited by the present invention.

In the embodiment of the present invention, between server 10 and the concentrator 20 in Fig. 1 and Fig. 2, existing connection side can be used Formula and communication protocol.Such as, can be that optical fiber is connected between server 10 with concentrator 20, server 10 and concentrator 20 it Between 3G or 4G agreement can be used to carry out data communication.

In the embodiment of the present invention, concentrator 20 and terminal 30 can be referred to as node, node is divided into sending node and connects Receive node.For Fig. 1, if concentrator 20 sends data to terminal 30, then concentrator 30 is properly termed as sending node, terminal 30 are properly termed as receiving node.If data are uploaded to concentrator 20 by terminal 30, then terminal 30 is properly termed as sending node, collection Middle device 20 is properly termed as receiving node.For Fig. 2, if concentrator 20 sends data to terminal 1/ terminal 2, then concentrator 20 Being properly termed as sending node, terminal 1/ terminal 2 is properly termed as receiving node.If terminal 1/ terminal 2 sends data to terminal 3 ～N, then terminal 1/ terminal 2 is properly termed as sending node, and terminal 3～N is properly termed as receiving node.If terminal 3～N is by data Transmission is properly termed as sending node to terminal 1/ terminal 2 then terminal 3～N, and terminal 1/ terminal 2 is properly termed as receiving node.If Terminal 1/ terminal 2 sends data to concentrator 20, then terminal 1/ terminal 2 is properly termed as sending node, and concentrator 20 can claim For receiving node.Visible, concentrator 20 and terminal 30 are respectively provided with the function of sending node and receiving node.

Fig. 3 is an indicative flowchart of the method for the information transmission of the embodiment of the present invention.Method shown in Fig. 3 is permissible Being performed by sending node, the method includes:

S101, processes physical layer signaling, the physical layer signaling after being processed.

S102, processes data message, the data message after being processed.

Wherein, the execution sequence of S101 and S102 is not limited by the embodiment of the present invention, and such as, S101 can hold simultaneously OK, or can successively perform successively.For example, it is possible to first carry out S101 to perform S102 again, or S102 can be first carried out hold again Row S101.

In the embodiment of the present invention, the frame structure of physical layer can as shown in Figure 4, including lead code (preamble) 301, Frame origin identification 302, physical layer signaling 303 and physical layer load (payload) 304.And physical layer signaling 303 includes length field 3031, control territory 3032, identification field 3033 and verification territory 3034.

Frame origin identification 302 can be the binary sequence of R1 bit, and wherein, R1 is positive integer.It is to say, frame initiates The form of mark 302 can be binary sequence, and a length of R1 bit of this binary sequence.Wherein, the occurrence of R1 can Being pre-configured.

Identification field 3033 may be used for physical layer and filters described data message.If determining according to identification field 3033 is not certainly Oneself message, then physical layer load 304 below can not be received, so can reduce power consumption.

Specifically, S101 may include that and described physical layer signaling is scrambled, and carries out channel code and interleaving, institute successively State the physical layer signaling after the physical layer signaling after intertexture scrambles as described process.S102 may include that described data message Scrambling, and carry out channel code and interleaving successively, the data message after described intertexture is the data message after described process.

Alternatively, the scrambling in S101 and S102 can use the method for scrambling of maturation.The method of the scrambling in S101 with The method of the scrambling in S102 can be identical or different.

Alternatively, the chnnel coding in S101 and S102 can use maturation coded method, can be such as convolutional code, Turbo code or LDPC code etc..The method of the chnnel coding in the method for the chnnel coding in S101 and S102 can identical or Different.

Alternatively, the intertexture in S101 and S102 can use block interleaving.In the method for the intertexture in S101 and S102 The method interweaved can be identical or different.

S103, is carried out the physical layer signaling after frame origin identification, described process and the data message after described process Multiplexing, obtains the code stream after multiplexing.

As can be seen here, sending node can first generate data message, physical layer signaling and frame origin identification.Data message warp After crossing scrambling, channel code and interleaving, output is to multiplexer.Physical layer signaling is scrambled, after channel code and interleaving, output To multiplexer.The frame origin identification generated is directly output to multiplexer.Multiplexer can first send frame origin identification, followed by thing Reason layer signaling, is finally data message.

S104, is modulated the code stream after described multiplexing, the signal after being modulated.

Specifically, the code stream after multiplexing can be carried out planisphere mapping, and the signal after the mapping of described planisphere is entered Row DSSS is modulated, the signal after being modulated.

Wherein, described planisphere map include following at least one: BPSK, QPSK, QAM and difference map.Difference Mapping can be DBPSK or DQPSK etc..

Wherein, the spreading factor of band spectrum modulation can be expressed as F, F and be referred to as code length or spreading length etc., the tool of F Body value can be pre-configured with, for example, F=2^k-1, k=2,3 ....The spread spectrum code that described band spectrum modulation is used is Pseudorandom m-sequence or other spread spectrum codes, such as Gold code.M-sequence can be determined by generator polynomial and initial value.Citing For, during F=63, the generator polynomial of m-sequence is: f (x)=x⁶+ x+1, wherein, initial value can be pre-configured with.

S105, carries out multiplexing by the signal after lead code and described modulation, obtains digital signal.

It is to say, plus lead code before sequence after band spectrum modulation.

Alternatively, described lead code includes the Zadoff-Chu sequence (referred to as ZC sequence) repeating R2 time and repeats R3 time Zadoff-Chu conjugate sequence, wherein, R2 and R3 is positive integer.It is to say, lead code can be divided into 2 parts, first Part is for repeating the Zadoff-Chu sequence of R2 time, and Part II is the Zadoff-Chu conjugate sequence of repetition R3 time, R2 and R3 Value can be configuration.Wherein, the two parts included by lead code can be Part I at front Part II rear, or Part II at front Part I rear.It is to say, ZC sequence can first be sent retransmit ZC conjugate sequence；Or can also First send ZC conjugate sequence to retransmit the ZC sequence present invention this is not limited.

In the embodiment of the present invention, Zadoff-Chu conjugate sequence is referred to as being conjugated Zadoff-Chu sequence, or is called for short For ZC conjugate sequence, this is not limited by the present invention.

Zadoff-Chu sequence can be expressed as:Wherein, j is imaginary unit, and p is integer, u and F is relatively prime, and 0 <u < F.

That is:Gcd (u, F)=1,0 <u < F.

The value of u, F and p is not limited by the embodiment of the present invention, as an example, u=1, F=2^k-1, k=2,3 ..., p =-(F+1)/2.

S106, processes described digital signal, obtains launching signal.

Specifically, S106 includes: by described digital signal after digital-to-analogue conversion, be converted to analogue signal；By described simulation Signal, by after up-conversion, generates radiofrequency signal；By described radiofrequency signal after power amplification, obtain described transmitting signal.

Wherein it is possible to realize the digital signal conversion to analogue signal by digital to analog converter (D/A).

S107, sends described transmitting signal.

Specifically, through the antenna of sending node, this transmitting signal can be sent to receiving node.

Based on above description, in the embodiment of the present invention, sending node sends the method for transmitting signal can be such as Fig. 5 institute Showing, i.e. may include that and data message is scrambled, then carry out chnnel coding, interweaving, output is to multiplexer.Physical layer signaling warp Crossing scrambling, chnnel coding, interweave, output is to multiplexer.Delta frame origin identification, output is to multiplexer.Multiplexer first sends frame Origin identification, followed by physical layer signaling, be finally data message.Code stream after multiplexing is carried out planisphere mapping, constellation Signal after figure maps carries out DSSS modulation, plus lead code before the sequence of band spectrum modulation.Digital signal passes through After digital-to-analogue conversion, become analogue signal, generate radiofrequency signal by upconverter, after power amplification, sent by antenna.

Or, the method for this transmission can be understood as five following steps:

The first step, first scrambles message, then carries out chnnel coding, interweaves, and output is to multiplexer.

Second step, physical layer signaling is scrambled, chnnel coding, interweaves, and output is to multiplexer.

3rd step, data message, physical layer signaling and frame origin identification are by, after multiplexer, being modulated.

Export to digital to analog converter after 4th step, signal after modulation and lead code multiplexing.

5th step, the analogue signal of digital to analog converter output, after up-conversion, power amplification, is sent out by antenna Go.

Visible, the embodiment of the present invention proposes a kind of brand-new internodal interconnected method, and the method disclosure satisfy that low merit Consumption, wide area covers, and accesses magnanimity terminal and the demand of low cost.

Fig. 6 is another indicative flowchart of the method for the information transmission of the embodiment of the present invention.Method shown in Fig. 6 by Receiving node performs, and the method includes:

S201, receives and launches signal.

Specifically, receive, by antenna, the transmitting signal that sending node sends.Such as, this transmitting signal can be to send joint Point sends at S107.

S202, processes described transmitting signal, obtains digital signal.

Specifically, radiofrequency signal can be obtained by described transmitting signal after low noise is amplified；Described radiofrequency signal is led to After crossing down coversion, obtain analogue signal；By described analogue signal after analog digital conversion, obtain described digital signal.

It is to say, can amplify launching signal through low noise, down coversion, analog digital conversion (A/D), it is transformed into numeral letter Number.

S203, carries out synchronization process to described digital signal, the signal after being synchronized.

Specifically, S203 may include that the first Zadoff-Chu sequence and first obtained in described digital signal Zadoff-Chu conjugate sequence；According to described first Zadoff-Chu sequence and a described Zadoff-Chu conjugate sequence, really Determine frequency deviation and symbol deviation；According to described frequency deviation and described symbol deviation, described digital signal is compensated；To described compensation Signal afterwards carries out de-spreading operation, obtains the signal after described synchronization.

Here synchronization process can include carrier synchronization, sign synchronization and frame synchronization.It is to say, digital signal synchronizes 3 parts, respectively carrier synchronization, sign synchronization and frame synchronization can be divided into.

Wherein it is possible to utilize the characteristic of Zadoff-Chu sequence/Zadoff-Chu conjugate sequence to carry out carrier synchronization and Sign synchronization.

Wherein, according to described first Zadoff-Chu sequence and a described Zadoff-Chu conjugate sequence, frequency deviation is determined With symbol deviation, including: according to described first Zadoff-Chu sequence and preset the 2nd Zadoff-Chu conjugate sequence, pass through Fast Fourier transform calculates first frequency；According to a described Zadoff-Chu conjugate sequence and the 2nd default Zadoff- Chu sequence, calculates second frequency by fast Fourier transform；According to described first frequency and described second frequency, calculate To described frequency deviation and described symbol deviation.

In the present embodiment, system frequency deviation being expressed as fo, symbol deviation chart is shown as to.Furthermore it is possible to by first frequency table Being shown as f1, second frequency is expressed as f2.Calculate frequency deviation fo and symbol deviation to and can include following three steps:

The first step: if the first Zadoff-Chu sequence is:

$r\left(n\right)=e^{-\frac{j\mathrm{\&pi;}(n-to)(n-to-F)}{F}+j2\mathrm{\&pi;}n\left(\frac{fo}{fs}\right)}+w\left(n\right),n=0,1,...,N-1.$

Wherein, fs is character rate.It is understood that the first Zadoff-Chu sequence is the sequence received.

If the 2nd Zadoff-Chu conjugate sequence is:

$x\left(n\right)=e^{\frac{j\mathrm{\&pi;}n(n-F)}{F}}.$

It is understood that the 2nd Zadoff-Chu conjugate sequence is local Zadoff-Chu conjugate sequence.

It is possible to further according to r (n) and x (n), by fast Fourier transform (Fast Fourier Transformation, FFT) calculate f1.

It is to say, the first Zadoff-Chu sequence is multiplied by the 2nd locally generated Zadoff-Chu conjugate sequence, Arrive:

$y\left(n\right)=r\left(n\right)*x\left(n\right)=e^{-\frac{j\mathrm{\&pi;}to(to+F)}{F}+\frac{j2\mathrm{\&pi;}nto}{F}+j2\mathrm{\&pi;}n\left(\frac{fo}{fs}\right)}+w\left(n\right)*x\left(n\right)$

Ignore noise, then by frequency f1 of sequences y (n) signal after FFT calculating product be:

$f1=\frac{fo}{fs}+\frac{to}{F}.$

Second step: if a Zadoff-Chu conjugate sequence is:

$r\left(n\right)=e^{\frac{j\mathrm{\&pi;}(n-to)(n-to-F)}{F}+j2\mathrm{\&pi;}n\left(\frac{fo}{fs}\right)}+w\left(n\right),n=0,1,...,N-1.$

Wherein, fs is character rate.It is understood that a Zadoff-Chu conjugate sequence is the sequence received.

If the second Zadoff-Chu sequence is:

$x\left(n\right)=e^{-\frac{j\mathrm{\&pi;}n(n-F)}{F}}.$

It is understood that the second Zadoff-Chu sequence is local Zadoff-Chu sequence.

It is possible to further according to r (n) and x (n), calculate f2 by FFT.

It is to say, a Zadoff-Chu conjugate sequence is multiplied by the second locally generated Zadoff-Chu sequence, Arrive:

$y\left(n\right)=r\left(n\right)*x\left(n\right)=e^{\frac{j\mathrm{\&pi;}to(to+F)}{F}-\frac{j2\mathrm{\&pi;}nto}{F}+j2\mathrm{\&pi;}n\left(\frac{fo}{fs}\right)}+w\left(n\right)*x\left(n\right)$

Ignore noise, then by frequency f2 of the sequences y (n) after FFT calculating product be:

$f2=\frac{fo}{fs}-\frac{to}{F}.$

3rd step, based on the above-mentioned first step and second step calculated f1 and f2 respectively, just can calculate fo and to.

So, frequency deviation and the symbol that just according to frequency deviation fo calculated and symbol deviation to, can compensate receiving sequence are inclined Difference.

Further, it is possible to according to the sequence after compensating for frequency offset and symbol deviation, do data symbol de-spreading operation.I.e. carry out frame Simultaneously operating.

De-spreading operation is that the symbol sebolic addressing received is multiplied by locally generated spread spectrum code, the sequence after the product that then adds up Row.

Assuming that receiving sequence is r (n), local m-sequence is p (n), and de-spreading operation is:

$y\left(n\right)=\underset{k=0}{\overset{F-1}{\&Sigma;}}r(n*F+k)*p\left(k\right).$

Wherein, F is spread spectrum code, and p (n) is that local m-sequence does 1 mapping 1, and 0 is mapped as obtaining after-1.

Here, the sequences y (n) after this de-spreading operation i.e. can be regarded as the signal after synchronizing.

Alternatively, after dispreading, need detect start-of-frame number, specifically can use the receiving sequence after despreading with The method of start-of-frame cross-correlation.

Assume despreading after sequences y (n), the sub-sfd (n) of start-of-frame number, then cross-correlation calculation:

$corr\left(n\right)=\underset{k=0}{\overset{R1-1}{\&Sigma;}}y(n+k)*sfd\left(k\right).$

Wherein, the length of R1 position frame origin identification, frame origin identification is the binary sequence of R1 bit.Sfd (n) is that frame rises Beginning symbolic code does what 1 mapping 1,0 was mapped as obtaining after-1.

When the absolute value of this cross-correlation is more than the threshold value set, just have found start-of-frame number, synchronizing process terminates.

S204, processes the signal after described synchronization, obtains physical layer signaling.

Specifically, after frame synchronization, the sequences y (n) of despreading is demodulated, deinterleaves, solve chnnel coding and descrambling, thus Obtain physical layer signaling.

As in the foregoing embodiment, physical layer signaling includes length field, controls territory, identification field and verification territory.Wherein, mark Described data message is filtered for physical layer in territory.

Further, after S204, it is also possible to include that physical layer signaling carries out verification to be calculated.

If verifying incorrect, the most directly exit.If it is to say, verify incorrect, the data that the most re-demodulation is not follow-up, Exit this and receive operation.

If verification is correct, then can perform subsequent treatment.Specifically, can be right according to the rule of the filtering frames of configuration Control territory and identification field processes, if need not receive load according to filtering rule, exiting and receiving operation specifically.If root Need to receive load according to filtering rule, then continue executing with reception operation, obtain data message.

Alternatively, if correct to the verification of described physical layer signaling, and determine according to filtering rule and need to receive load, such as figure Shown in 7, the method can further include:

S205, processes the signal after physical layer signaling, obtains data message.

Specifically, if correct to the verification of described physical layer signaling, and determine according to filtering rule and need to receive load, the most right Signal after described physical layer signaling is demodulated, deinterleaves, channel-decoding and descrambling, obtains described data message.

If it is to say, according to filtering rule, needing to receive load, then by the sequence after the physical layer signaling of despreading Y (n) is demodulated, and deinterleaves, and solves chnnel coding and descrambling, thus exports data message.

Based on above description, in the embodiment of the present invention, receiving node receives the method for transmitting signal can be such as Fig. 8 institute Showing, wherein, the radio frequency input in Fig. 8 is the transmitting signal in S201.The method of this reception can be understood as four following steps:

The first step, first passes through antenna receiving signal, amplifies through low noise, down coversion, analog digital conversion, is transformed into numeral letter Number.

Second step, digital signal first carries out synchronization process, including carrier synchronization, sign synchronization and frame synchronization.

3rd step, the signal after synchronization first carries out physical layer signaling demodulation, deinterleaves, channel-decoding and descrambling.

4th step, receives correct physical layer signaling, carries out filtration and the process of frame, if needing to receive physical load, Just the signal after physical layer signaling is demodulated, deinterleaves, channel-decoding and descrambling, export data message.

Visible, the embodiment of the present invention proposes a kind of brand-new internodal interconnected method, and the method disclosure satisfy that low merit Consumption, wide area covers, and accesses magnanimity terminal and the demand of low cost.

Fig. 9 is a structured flowchart of the node of the embodiment of the present invention.Node 50 shown in Fig. 9 is sending node, including: First processing module the 501, second processing module the 502, first Multiplexing module 503, modulation module the 504, second Multiplexing module 505, 3rd processing module 506 and sending module 507.

First processing module 501, for physical layer signaling is processed, the physical layer signaling after being processed；

Second processing module 502, for data message is processed, the data message after being processed；

First Multiplexing module 503, the thing after the described process that frame origin identification, the first processing module 501 are obtained Data message after the described process that reason layer signaling and the second processing module 502 obtain carries out multiplexing, obtains the code after multiplexing Stream；

Modulation module 504, the code stream after the described multiplexing obtaining the first Multiplexing module 503 is modulated, and obtains Signal after modulation；

Second Multiplexing module 505, the signal after described modulation lead code and modulation module 504 obtained carries out multiple With, obtain digital signal；

3rd processing module 506, processes for the described digital signal obtaining the second Multiplexing module 505, obtains Launch signal；

Sending module 507, for sending the described transmitting signal that the 3rd processing module 506 obtains.

In the embodiment of the present invention, described physical layer signaling can include length field, controls territory, identification field and verification territory, its In, described identification field filters described data message for physical layer.Frame origin identification can be the binary sequence of R1 bit, its In, R1 is positive integer.

Alternatively, as a kind of implementation, the first processing module 501, specifically for the scrambling of described physical layer signaling, And carrying out channel code and interleaving successively, the physical layer signaling scrambling after described intertexture is the physical layer signaling after described process. Second processing module 502, specifically for described data message is scrambled, and carries out channel code and interleaving, described intertexture successively After data message be the data message after described process.

Wherein, identical with the method for the scrambling to described data message to the method for the scrambling of described physical layer signaling or not With；And/or, identical with the method for the chnnel coding to described data message to the method for the chnnel coding of described physical layer signaling Or it is different；And/or, identical with the method for the intertexture to described data message to the method for the intertexture of described physical layer signaling or not With.

Such as, the method for chnnel coding can be convolutional code, Turbo code or LDPC code etc..The method interweaved can be Block interleaving etc..

Alternatively, as a kind of implementation, modulation module 504 can be specifically for: the code stream after multiplexing is carried out star Seat figure maps, and the signal after the mapping of described planisphere is carried out DSSS modulation, the signal after being modulated.

Wherein, planisphere map can include following at least one: BPSK, QPSK, QAM and difference map.Difference Mapping can be DBPSK or DQPSK etc..Wherein, the spreading factor of band spectrum modulation can be expressed as F, such as, F=2^k-1,k =2,3 ....The spread spectrum code that band spectrum modulation is used is pseudorandom m-sequence or Gold code.M-sequence can be by generator polynomial And initial value is determined.Such as, during F=63, the generator polynomial of m-sequence is: f (x)=x⁶+ x+1, wherein, initial value is permissible It is pre-configured with.

Alternatively, as a kind of implementation, the 3rd processing module 506 can be specifically for: by described digital signal warp After digital-to-analogue conversion, be converted to analogue signal；By described analogue signal by after up-conversion, generate radiofrequency signal；By described radio frequency Signal, after power amplification, obtains described transmitting signal.

In the embodiment of the present invention, lead code can include the Zadoff-Chu sequence repeating R2 time and repeat R3 time Zadoff-Chu conjugate sequence, wherein, R2 and R3 is positive integer.

Zadoff-Chu sequence can be expressed as:

$x_u=e^{-\frac{j\mathrm{\&pi;}un(n+2p+1)}{F}},$

Wherein, j is imaginary unit, and p is integer, u and F is relatively prime, and 0 <u < F.As an example, u=1, F=2^k-1, k=2, 3 ..., p=-(F+1)/2.

Node 50 is capable of the method for the information performed by the sending node transmission shown in earlier figures 3 or Fig. 5, for avoiding Repeat, repeat no more here.

It addition, sending node can also include that at least one processor and memorizer, processor and memorizer pass through bus Systems etc. are attached communication.Wherein, memorizer is used for storing instruction, and processor may be used for performing the finger that memorizer is stored Order, and the method that the transmission of the aforementioned information realized by sending node can be realized when processor performs this instruction.

Processor can be CPU (Central Processing Unit, CPU) or have data process The processing unit of other form of ability and/or instruction execution capability, and other assembly in this sending node can be controlled To perform desired function.

Memorizer can be volatile memory and/or nonvolatile memory.Described volatile memory is the most permissible Including random access memory (RAM) and/or cache memory (cache) etc..Described nonvolatile memory such as may be used To include read only memory (ROM), hard disk, flash memory etc..

Memorizer can store one or more programmed instruction, and processor can run described programmed instruction, on realizing The method stating the information transmission performed by sending node.

Figure 10 is another structured flowchart of the node of the embodiment of the present invention.Node 60 shown in Figure 10 can be to receive joint Point, including: receiver module the 601, first processing module 602, synchronization module 603 and the second processing module 604.

Receiver module 601, is used for receiving transmitting signal；

First processing module 602, processes for the described transmitting signal receiving receiver module 601, obtains numeral Signal；

Synchronization module 603, carries out synchronization process for the described digital signal obtaining the first processing module 602, obtains Signal after synchronization；

Second processing module 604, the signal after the described synchronization obtaining synchronization module 603 processes, and obtains Physical layer signaling.

In the embodiment of the present invention, described physical layer signaling can include length field, controls territory, identification field and verification territory, its In, described identification field filters described data message for physical layer.

Alternatively, as a kind of implementation, synchronization module 603 can be specifically for:

Obtain the first Zadoff-Chu sequence in described digital signal and a Zadoff-Chu conjugate sequence；

According to described first Zadoff-Chu sequence and a described Zadoff-Chu conjugate sequence, determine frequency deviation and symbol Deviation；

According to described frequency deviation and described symbol deviation, described digital signal is compensated；

Signal after described compensation is carried out de-spreading operation, obtains the signal after described synchronization.

Wherein, synchronization module 603 can be specifically for according to described first Zadoff-Chu sequence and default second Zadoff-Chu conjugate sequence, calculates first frequency by fast Fourier transform；According to a described Zadoff-Chu conjugation Sequence and the second Zadoff-Chu sequence preset, calculate second frequency by fast Fourier transform；According to described first frequency Rate and described second frequency, be calculated described frequency deviation and described symbol deviation.

Alternatively, after dispreading, synchronization module 603 also needs to detect start-of-frame number, specifically can use despreading After the method for receiving sequence and start-of-frame cross-correlation.Wherein, frame origin identification can be the binary sequence of R1 bit, R1 is positive integer.If the absolute value of this cross-correlation terminates more than the threshold value set, the then synchronizing process that synchronization module 603 performs.

Alternatively, as a kind of implementation, the second processing module 604 can be specifically for: by described transmitting signal warp After crossing low noise amplification, obtain radiofrequency signal；By described radiofrequency signal by, after down coversion, obtaining analogue signal；By described simulation Signal, after analog digital conversion, obtains described digital signal.

It is to say, the second processing module 604 can be demodulated, deinterleave, solve chnnel coding and descrambling, thus obtain Physical layer signaling.

Alternatively, as a kind of implementation, the second processing module 604 can be also used for: after physical layer signaling Signal processes, and obtains data message.

Specifically, the second processing module 604 is used for: if correct to the verification of described physical layer signaling, and according to filtering rule Determine and need to receive load, then the signal after described physical layer signaling is demodulated, deinterleaves, channel-decoding and descrambling, Obtain described data message.

After obtaining physical layer signaling, physical layer signaling can be carried out verification and calculate.If verification is correct, the most permissible The rule of the filtering frames according to configuration, processes control territory and identification field, if determining according to filtering rule and needing to receive Load, then be demodulated the signal after described physical layer signaling, deinterleave, channel-decoding and descrambling, thus obtains described Data message.

Node 60 is capable of the method for the information performed by the receiving node transmission shown in earlier figures 6 to Fig. 8, for avoiding Repeat, repeat no more here.

It addition, receiving node can also include that at least one processor and memorizer, processor and memorizer pass through bus Systems etc. are attached communication.Wherein, memorizer is used for storing instruction, and processor may be used for performing the finger that memorizer is stored Order, and the method that the transmission of the aforementioned information realized by receiving node can be realized when processor performs this instruction.

Processor can be with the process being CPU or other form with data-handling capacity and/or instruction execution capability Unit, and other assembly in this receiving node can be controlled to perform desired function.

Memorizer can be volatile memory and/or nonvolatile memory.Described volatile memory is the most permissible Including random access memory (RAM) and/or cache memory (cache) etc..Described nonvolatile memory such as may be used To include read only memory (ROM), hard disk, flash memory etc..

Memorizer can store one or more programmed instruction, and processor can run described programmed instruction, on realizing The method stating the information transmission performed by receiving node.

Although describing example embodiment by reference to accompanying drawing here, it should be understood that above-mentioned example embodiment is merely exemplary , and be not intended to limit the scope of the invention to this.Those of ordinary skill in the art can carry out various change wherein And amendment, it is made without departing from the scope of the present invention and spirit.All such changes and modifications are intended to be included in claims Within required the scope of the present invention.

Those of ordinary skill in the art are it is to be appreciated that combine the list of each example that the embodiments described herein describes Unit and algorithm steps, it is possible to being implemented in combination in of electronic hardware or computer software and electronic hardware.These functions are actually Perform with hardware or software mode, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel Each specifically should being used for can be used different methods to realize described function, but this realization is it is not considered that exceed The scope of the present invention.

In several embodiments provided herein, it should be understood that disclosed equipment and method, can be passed through it Its mode realizes.Such as, apparatus embodiments described above is only schematically, such as, and the division of described unit, only Being only a kind of logic function to divide, actual can have other dividing mode, the most multiple unit or assembly to tie when realizing Close or be desirably integrated into another equipment, or some features can be ignored, or not performing.

In description mentioned herein, illustrate a large amount of detail.It is to be appreciated, however, that the enforcement of the present invention Example can be put into practice in the case of not having these details.In some instances, it is not shown specifically known method, structure And technology, in order to do not obscure the understanding of this description.

Similarly, it will be appreciated that one or more in order to simplify that the present invention helping understands in each inventive aspect, exist To in the description of the exemplary embodiment of the present invention, each feature of the present invention be sometimes grouped together into single embodiment, figure, Or in descriptions thereof.But, should not be construed to reflect an intention that the most required for protection by the method for this present invention Application claims feature more more than the feature being expressly recited in each claim.More precisely, such as corresponding power As profit claim is reflected, its inventive point is can be with the spy of all features of embodiment single disclosed in certain Levy and solve corresponding technical problem.Therefore, it then follows it is concrete that claims of detailed description of the invention are thus expressly incorporated in this Embodiment, the most each claim itself is as the independent embodiment of the present invention.

It will be understood to those skilled in the art that in addition to mutually exclusive between feature, any combination can be used right All features disclosed in this specification (including adjoint claim, summary and accompanying drawing) and the disclosedest any method Or all processes of equipment or unit are combined.Unless expressly stated otherwise, this specification (includes that adjoint right is wanted Ask, make a summary and accompanying drawing) disclosed in each feature can by provide identical, equivalent or similar purpose alternative features replace.

Although additionally, it will be appreciated by those of skill in the art that embodiments more described herein include other embodiments Some feature included by rather than further feature, but the combination of the feature of different embodiment means to be in the present invention's Within the scope of and form different embodiments.Such as, in detail in the claims, embodiment required for protection one of arbitrarily Can mode use in any combination.

The all parts embodiment of the present invention can realize with hardware, or to run on one or more processor Software module realize, or with combinations thereof realize.It will be understood by those of skill in the art that and can use in practice Microprocessor or digital signal processor (DSP) realize some moulds in article analytical equipment according to embodiments of the present invention The some or all functions of block.The present invention is also implemented as the part for performing method as described herein or complete The device program (such as, computer program and computer program) in portion.The program of such present invention of realization can store On a computer-readable medium, or can be to have the form of one or more signal.Such signal can be from the Internet Download on website and obtain, or provide on carrier signal, or provide with any other form.

The above, the only detailed description of the invention of the present invention or explanation to detailed description of the invention, the protection of the present invention Scope is not limited thereto, and any those familiar with the art, can be easily in the technical scope that the invention discloses Expect change or replace, all should contain within protection scope of the present invention.Protection scope of the present invention should be with claim Protection domain is as the criterion.

Claims (10)

1. the method for an information transmission, it is characterised in that including:

Physical layer signaling is processed, the physical layer signaling after being processed；

Data message is processed, the data message after being processed；

Physical layer signaling after frame origin identification, described process and the data message after described process are carried out multiplexing, obtains Code stream after multiplexing；

Code stream after described multiplexing is modulated, the signal after being modulated；

Signal after lead code and described modulation is carried out multiplexing, obtains digital signal；

Described digital signal is processed, obtains launching signal；

Send described transmitting signal.

Method the most according to claim 1, it is characterised in that

Described physical layer signaling is processed, the physical layer signaling after being processed, including:

Described physical layer signaling is scrambled, and carries out channel code and interleaving successively, the physical layer signaling scrambling after described intertexture For the physical layer signaling after described process；

Described data message is processed, the data message after being processed, including:

Described data message being scrambled, and carries out channel code and interleaving successively, the data message after described intertexture is described place Data message after reason；

Wherein, identical or different with the method for the scrambling to described data message to the method for the scrambling of described physical layer signaling； And/or

Identical with the method for the chnnel coding to described data message to the method for the chnnel coding of described physical layer signaling or not With；And/or

Identical or different with the method for the intertexture to described data message to the method for the intertexture of described physical layer signaling.

Method the most according to claim 1, it is characterised in that described be modulated the code stream after described multiplexing, obtains Signal after modulation, including:

Code stream after described multiplexing is carried out planisphere mapping, and the signal after the mapping of described planisphere is carried out direct sequence expansion Frequency modulation system, the signal after being modulated.

Method the most according to claim 1, it is characterised in that described lead code includes the Zadoff-Chu sequence repeating R2 time Row and repeat the Zadoff-Chu conjugate sequence of R3 time, wherein, R2 and R3 is positive integer.

5. according to the method described in any one of Claims 1-4, it is characterised in that described physical layer signaling includes length field, control Territory processed, identification field and verification territory, wherein, described identification field filters described data message for physical layer.

6. the method for an information transmission, it is characterised in that including:

Receive and launch signal；

Described transmitting signal is processed, obtains digital signal；

Described digital signal is carried out synchronization process, the signal after being synchronized；

Signal after described synchronization is processed, obtains physical layer signaling.

Method the most according to claim 6, it is characterised in that also include:

If to the verification of described physical layer signaling correctly, and determining according to filtering rule and needing to receive load, then to described physical layer Signal after signaling is demodulated, deinterleaves, channel-decoding and descrambling, obtains described data message.

8. according to the method described in claim 6 or 7, it is characterised in that described described digital signal is carried out synchronization process, Signal after synchronization, including:

Obtain the first Zadoff-Chu sequence in described digital signal and a Zadoff-Chu conjugate sequence；

According to described first Zadoff-Chu sequence and the 2nd default Zadoff-Chu conjugate sequence, become by fast Fourier Change calculating first frequency；

According to a described Zadoff-Chu conjugate sequence and the second default Zadoff-Chu sequence, become by fast Fourier Change calculating second frequency；

According to described first frequency and described second frequency, it is calculated described frequency deviation and described symbol deviation；

According to described frequency deviation and described symbol deviation, described digital signal is compensated；

Signal after described compensation is carried out de-spreading operation, obtains the signal after described synchronization.

9. a node, it is characterised in that described node is for performing the method described in aforementioned any one of claim 1 to 5.

10. a node, it is characterised in that described node is for performing the method described in aforementioned any one of claim 6 to 8.