CN106411466B - The method and node of information transmission - Google Patents
The method and node of information transmission Download PDFInfo
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- CN106411466B CN106411466B CN201610822846.2A CN201610822846A CN106411466B CN 106411466 B CN106411466 B CN 106411466B CN 201610822846 A CN201610822846 A CN 201610822846A CN 106411466 B CN106411466 B CN 106411466B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/0055—ZCZ [zero correlation zone]
- H04J13/0059—CAZAC [constant-amplitude and zero auto-correlation]
- H04J13/0062—Zadoff-Chu
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
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- Computer Networks & Wireless Communication (AREA)
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- Power Engineering (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment provides a kind of methods of information transmission, comprising: by pending data flow point is M group data stream, M group data stream and M channel one-to-one correspondence, wherein M is positive integer；Each group data stream in the M group data stream is respectively processed, M is obtained treated signal；By the M, treated that signal carries out numerical frequency moves, and obtains digital signal after being added；The digital signal is handled, transmitting signal is obtained；Send the transmitting signal.As it can be seen that the embodiment of the present invention proposes the interconnected method between the completely new node of one kind, this method can satisfy low-power consumption, wide area covering, the demand of access magnanimity terminal and low cost.
Description
Technical field
The present invention relates to the communications fields, more particularly, to the method and node of a kind of transmission of information.
Background technique
With the gradually rise of smart city, more and more equipment need to acquire data, and will be adopted by communication link
The data collected are uploaded to server.Further, the server of operator can analyze the data of upload, so as to
Enough preferably service or more effectively management are provided for each equipment.Many equipment does not have independent power supply, but passes through electricity
Pond is powered, it is therefore desirable to which a kind of transmission method of low-power consumption guarantees that collected data are uploaded to server by equipment.
In general, the frequency of devices collect data is very low, the data volume very little acquired every time, in order to reduce whole system
Construction cost, propose a concentrator to manage a large amount of equipment.Concentrator services multiple equipment simultaneously, improves system
Handling capacity.
Existing communication system WiFi, Bluetooth and ZigBee etc., communication distance is short, not can be carried out wide area covering.Separately
A kind of cellular wide area network technology GSM, 3G and LTE etc., power consumption is too big, at high cost, is also not suitable for equipment interconnecting application.Therefore, anxious
A kind of new communication modes are needed, to meet equipment low-power consumption, and the demand extensively covered.
Summary of the invention
The present invention is proposed in view of the above problem.The method and node transmitted the present invention provides a kind of information, this
The demand that kind communication modes can satisfy low-power consumption and extensively cover.
In a first aspect, providing a kind of method of information transmission, comprising:
It is M group data stream by pending data flow point, M group data stream is corresponded with M channel, wherein M is positive whole
Number；
Each group data stream in the M group data stream is respectively processed, M is obtained treated signal；
By the M, treated that signal carries out numerical frequency moves, and obtains digital signal after being added；
The digital signal is handled, transmitting signal is obtained；
Send the transmitting signal.
Illustratively, in one possible implementation, the spreading code is pseudorandom m-sequence or Gold code.
Illustratively, in one possible implementation, each group data stream in the M group data stream into
Row processing obtains M treated signal, comprising:
The i-th group data stream in the M group data stream is handled as follows, the M is obtained treated in signal
I-th treated signal, the value range that wherein i is positive integer and i is 1 to M:
Multiple data flows included by described i-th group are divided into K group, are each data flow point in the multiple data flow
With spreading code, wherein the code length of the spreading code of the data flow of the different groups in the K group is unequal, is located in the K group
Same group of data flow spreading code code length is equal and cyclic shift with different delayed time, K be positive integer and K be less than or
The quantity of multiple data flows included by equal to described i-th group；
According to corresponding spreading code, each data flow in the multiple data flow is respectively processed, is obtained multiple
Data flow that treated；
For treated in every group of K group data flow, it is weighted summation, obtains K signals after being added；
The K signals after being added are multiplexed respectively with lead code, obtain K multiplexed signals；
The K multiplexed signals are weighted summation, obtain described i-th treated signal.
Wherein, the lead code includes the Zadoff-Chu conjugation for repeating R2 Zadoff-Chu sequence and repeating R3 times
Sequence, wherein R2 and R3 is positive integer.
The Zadoff-Chu sequence indicates are as follows:
Wherein, j is imaginary unit, and p is integer, and u and F are relatively prime, and 0 <u < F.
Illustratively, in one possible implementation, described according to corresponding spreading code, to the multiple data flow
In each data flow be respectively processed, obtain multiple treated data flows, comprising:
For each data flow, following operation is executed, the data flow that obtains that treated:
The physical layer signaling scrambling in data flow, and channel code and interleaving is successively carried out, the physics that obtains that treated
Layer signaling；
The data message scrambling in the data flow, and channel code and interleaving is successively carried out, the number that obtains that treated
According to message；
By frame origin identification, treated the physical layer signaling and it is described treated that data message is multiplexed,
Obtain multiplexed code stream；
According to spreading code corresponding with the data flow, the multiplexed code stream is modulated, the processing is obtained
Data flow afterwards.
Wherein, the physical layer signaling includes length field, control domain, identification field and verification domain, wherein the identification field is used
The data message is filtered in physical layer.
Wherein, the frame origin identification is the binary sequence of R1 bit, wherein R1 is positive integer.
Illustratively, in one possible implementation, to the scrambled method of the physical layer signaling with to described
The scrambled method of data message is identical or different；And/or
It is identical as the method for the channel coding to the data message to the method for the channel coding of the physical layer signaling
Or it is different；And/or
It is identical or different to the method for the method and the intertexture to the data message of the intertexture of the physical layer signaling.
Illustratively, in one possible implementation, basis spreading code corresponding with the data flow, to institute
It states multiplexed code stream to be modulated, obtains treated the data flow, comprising:
Multiplexed code stream is carried out planisphere mapping, and using the corresponding spreading code after planisphere mapping
Signal carry out Direct Sequence Spread Spectrum modulation, obtain treated the data flow.
Wherein, the planisphere mapping includes at least one of the following: BPSK, QPSK, QAM and difference mapping.
Illustratively, in one possible implementation, described to add up to weighting summation, and the weighting summation is made
Weight is preconfigured.
Illustratively, in one possible implementation, described that the digital signal is handled, obtain transmitting letter
Number, comprising:
By the digital signal after digital-to-analogue conversion, analog signal is converted to；
By the analog signal by generating radiofrequency signal after up-conversion；
By the radiofrequency signal after power amplification, the transmitting signal is obtained.
Second aspect provides a kind of node, comprising: grouping module, first processing module, Second processing module, third
Processing module and sending module.The node can be used to implement any implementation institute of aforementioned first aspect or first aspect
The method for the information transmission stated.
The third aspect provides a kind of computer chip, which includes processor, when the processor executes generation
When code, the method that information described in aforementioned first aspect or any implementation of first aspect is transmitted can be realized.
As it can be seen that the embodiment of the present invention proposes the interconnected method between the completely new node of one kind, multiple data flows may be implemented
While send, avoid the power consumption repeatedly sent, therefore, this method can satisfy low-power consumption, and wide area covering accesses magnanimity terminal
With the demand of low cost.
Detailed description of the invention
The embodiment of the present invention is described in more detail in conjunction with the accompanying drawings, the above and other purposes of the present invention,
Feature and advantage will be apparent.Attached drawing is used to provide to further understand the embodiment of the present invention, and constitutes explanation
A part of book, is used to explain the present invention together with the embodiment of the present invention, is not construed as limiting the invention.In the accompanying drawings,
Identical reference label 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 flow chart of the method for the information transmission of the embodiment of the present invention；
Fig. 3 is another schematic flow chart 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 structural schematic diagram of the frame structure of the embodiment of the present invention；
Fig. 6 is a schematic diagram of the frame structure of the different channels of the embodiment of the present invention；
Fig. 7 is another schematic flow chart of the method for the information transmission of the embodiment of the present invention；
Fig. 8 is another schematic flow chart of the method for the information transmission of the embodiment of the present invention；
Fig. 9 is another schematic flow chart of the method for the information transmission of the embodiment of the present invention；
Figure 10 is another schematic flow chart of the method for the information transmission of the embodiment of the present invention；
Figure 11 is another schematic flow chart of the method for the information transmission of the embodiment of the present invention；
Figure 12 is a schematic diagram of the different frame structures that multiple terminals of the embodiment of the present invention are sent；
Figure 13 is a structural block diagram of the node of the embodiment of the present invention；
Figure 14 is another structural block diagram of the node of the embodiment of the present invention；
Figure 15 is another structural block diagram of the node of the embodiment of the present invention.
Specific embodiment
In order to enable the object, technical solutions and advantages of the present invention become apparent, root is described in detail below with reference to accompanying drawings
According to example embodiments of the present invention.Obviously, described embodiment is only a part of the embodiments of the present invention, rather than this hair
Bright whole embodiments, it should be appreciated that the present invention is not limited by example embodiment described herein.Based on described in the present invention
The embodiment of the present invention, those skilled in the art's obtained all other embodiment in the case where not making the creative labor
It should all fall under the scope of the present invention.
Equipment in the embodiment of the present invention is referred to as terminal device, terminal, mobile terminal, mobile device etc., this hair
It is bright that this is not limited.Collected data can be uploaded to server by concentrator by equipment, similarly, concentrator with can be with
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, as shown in Figure 1.Server 10, concentrator 20 and terminal 30 are shown in Fig. 1.Wherein, terminal 30 is wrapped
Include terminal 1, terminal 2 ..., terminal N.Dotted line shown in Fig. 1 indicates the communication link between concentrator 20 and terminal 30.
Can be used in the embodiment of the present invention, between the server 10 in Fig. 1 and concentrator 20 existing connection type with
And communication protocol.For example, can be optical fiber connection between server 10 and concentrator 20, it can between server 10 and concentrator 20
To carry out data communication using 3G or 4G agreement.
In the embodiment of the present invention, concentrator 20 and terminal 30 can be referred to as node.And concentrator 20 is to terminal 30
Transmission can be understood as downlink transfer, the transmission of terminal 30 to concentrator 20 can be understood as uplink.Uplink/under
Row transmission can be using time division multiplexing (Time Division Duplexing, TDD), alternatively, can be used with different channels
Frequency division multiplexing (Frequency Division Duplexing, FDD).
In the embodiment of the present invention, it can will be divided into M parts, i.e. M channel using frequency spectrum between concentrator 20 and terminal 30.
Wherein, M is positive integer.For example, if the bandwidth using frequency spectrum is 1MHz, 8 channels, Mei Gexin can be divided it in average into
Road 125KHz, i.e. M=8.
During concentrator 20 and 30 information of terminal are transmitted, channel corresponding with each terminal can be the terminal from
It is randomly selected in M channel, alternatively, can be concentrator 20 is the terminal distribution.For example, terminal 1 can be from M
A channel is independently randomly selected in channel to be communicated with concentrator 20.It is understood that different terminals can choose it is identical
Or different channel.Alternatively, concentrator 20 can distribute a channel for logical between concentrator 20 and terminal 1 for terminal 1
Letter.It is understood that concentrator can be the identical or different channel of different terminal distributions.
As it can be seen that the transmission channel between different terminal and concentrator 20 can be identical or different.
Fig. 2 is a schematic flow chart of the method that the information of the embodiment of the present invention is transmitted.Under method shown in Fig. 2 is
The method that the method that row is sent, i.e. concentrator 20 send transmitting signal to terminal 30, this method can be executed by concentrator 20, should
Method includes:
Pending data flow point is M group data stream, M group data stream and M channel one-to-one correspondence by S101, wherein M is
Positive integer.
Specifically, pending data flow point can be M group, positioned at same group according to corresponding channel by concentrator 20
Channel used in data flow is identical.In other words, the channel that concentrator 20 can be used according to user, with same channel
User is placed on one group.Every group all independently executes process described in following S102.
In addition, it should be understood that being equivalent to and being handled pending data stream as one group if M=1, or it is understood that
For without the division operation for executing S101.If M is the positive integer greater than 1, can successively be executed according to method shown in Fig. 2.
S102 is respectively processed each group data stream in the M group data stream, obtains M treated signal.
Specifically, S102 may include:
The i-th group data stream in the M group data stream is handled as follows, the M is obtained treated in signal
I-th treated signal, the value range that wherein i is positive integer and i is 1 to M:
Multiple data flows included by described i-th group are divided into K group, are each data flow point in the multiple data flow
With spreading code, wherein the code length of the spreading code of the data flow of the different groups in the K group is unequal, is located in the K group
Same group of data flow spreading code code length is equal and cyclic shift with different delayed time, K be positive integer and K be less than or
The quantity of multiple data flows included by equal to described i-th group；
According to corresponding spreading code, each data flow in the multiple data flow is respectively processed, is obtained multiple
Data flow that treated；
For treated in every group of K group data flow, it is weighted summation, obtains K signals after being added；
The K signals after being added are multiplexed respectively with lead code, obtain K multiplexed signals；
The K multiplexed signals are weighted summation, obtain described i-th treated signal.
As it can be seen that can concurrently handle M group data stream, each group of processing is independent from each other, to appoint in M group
For one group (referred to as current group data stream), the process executed can be as shown in figure 3, include following S1021-S1025.
Multiple data flows included by current group data stream are divided into K group by S1021, are distributed for the multiple data flow more
A spreading code, the multiple spreading code and the multiple data flow correspond.Wherein, for being located at different timess organized in K group
Meaning two data streams, the code length of their spreading code are unequal.For being located at same group in K group of any two data flow, it
Spreading code code length it is equal and they spreading code have different delayed time cyclic shift.K is positive integer and K is less than or waits
The quantity of multiple data flows included by described i-th group.
Wherein, current group data stream includes multiple data flows.For example, can be according to characteristic (such as rate of multiple data flows
Deng) it is classified as K group.
In the embodiment of the present invention, spreading code can be pseudorandom m-sequence or Gold code, or may be other spread spectrums
Code, here without limitation.
Each spreading code is the element with spreading factor, in the set of all spreading factors composition of multiple spreading codes
Number be K.It is understood that K is the positive integer of the quantity less than or equal to multiple data flows.As an example it is assumed that current group
Data flow includes N1 data flow, then, K≤N1.
Optionally, spreading code is pseudorandom m-sequence, and multiple spreading codes are multiple pseudorandom m-sequences.Assuming that some pseudorandom
The length of m-sequence is F.In addition, F is referred to as code length or spreading factor or spreading length etc., the occurrence of F can be pre-
It first configures, for example, F=2k- 1, k=2,3 ....M-sequence, which can be, to be determined by generator polynomial and initial value.
For example, when F=63, the generator polynomial of m-sequence are as follows: f (x)=x6+ x+1, wherein initial value can be preconfigured.
The m-sequence p that it is F based on an original length that multiple pseudorandom m-sequences, which can be,F(n) pass through cyclic shift d
It generates afterwards.
Assuming that original series pF(n) are as follows: pF(0),pF(1),…,pF(F-1).Sequence after cyclic shift dAre as follows:
In this way, shifted by loop cycle, it can be based on original m-sequence pF(n) circulation with different delayed time is generated
Multiple pseudorandom m-sequences of displacement.
As it can be seen that distributing the random m-sequence code of a cyclic shift in S1021 for each data flowAnd to any
Two different data flows, F is different or d is different.
S1022 is respectively processed each data flow in the multiple data flow, obtains according to corresponding spreading code
To multiple treated data flows.
Specifically, for each data flow, following operation is executed, the data flow that obtains that treated:
The physical layer signaling scrambling in data flow, and channel code and interleaving is successively carried out, the physics that obtains that treated
Layer signaling；The data message scrambling in the data flow, and channel code and interleaving is successively carried out, the data that obtain that treated
Message；By frame origin identification, treated the physical layer signaling and it is described treated that data message is multiplexed, obtain
Multiplexed code stream；According to spreading code corresponding with the data flow, the multiplexed code stream is modulated, is obtained described
Data flow that treated.
As it can be seen that S1022 is to carry out independent processing to each data flow, can be performed in parallel.
In the embodiment of the present invention, the frame structure of physical layer can be as shown in Figure 4, comprising: 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 domain 3032, identification field 3033 and verification domain 3034.
Frame origin identification 302 can be the binary sequence of R1 bit, wherein R1 is positive integer.That is, frame originates
The form of mark 302 can be binary sequence, and the length of the binary sequence is R1 bit.Wherein, the occurrence of R1 can
To be pre-configured.
Identification field 3033 can be used for physical layer and filter the data message.If not being certainly according to the determination of identification field 3033
Oneself message can reduce power consumption then subsequent physical layer load 304 can not be received in this way.
Correspondingly, in multiple data flows, the frame structure of the data flow (being assumed to be 4) of spreading factor having the same can be with
As shown in Figure 5.
Specifically, in the processing of each data flow, scrambling can be using mature method for scrambling.Physical layer signaling institute
Scrambled method used in the scrambling used and data message can be identical or different.
Optionally, channel coding can using mature coding method, such as can be convolutional code, Turbo code or
LDPC code etc..The method of channel coding used in the method and data message of channel coding used in physical layer signaling can be with
It is identical or different.
Optionally, intertexture can be using block interleaving etc..The method to interweave used in physical layer signaling and data message institute
The method of the intertexture used can be identical or different.
Further optionally, scrambled method used in different data flows can be identical or different, different data flows
The method of used channel coding can be identical or different, the method to interweave used in different data flows can it is identical or
Difference, the present invention do not limit this.
It can be seen that being directed to each data flow, data message, physical layer signaling and frame origin identification can be first generated.
Data message is scrambled, after channel code and interleaving, exports to multiplexer.Physical layer signaling is scrambled, channel coding and
After intertexture, export to multiplexer.The frame origin identification of generation is directly output to multiplexer.Multiplexer can first send frame starting mark
Know, followed by physical layer signaling, is finally data message.
Optionally, the multiplexed code stream is modulated, the data flow that obtains that treated may include: multiplexing
Code stream afterwards carries out planisphere mapping, and the signal after planisphere mapping is carried out Direct Sequence Spread Spectrum modulation, is adjusted
Data flow that signal after system is that treated.
Wherein, the planisphere mapping includes at least one of the following: BPSK, QPSK, QAM and difference mapping.Difference
Mapping can be DBPSK or DQPSK etc..
Wherein, the frequency expansion sequence of band spectrum modulation be distributed in S1021 with spreading code corresponding to current data stream.
S1023 is weighted summation for treated in every group of K group data flow, obtain K be added after
Signal.
Specifically, obtained for S1022 as a result, be weighted summation respectively to each group in K group, that is,
It says, is concurrently weighted summation for this K group, to obtain K signals after being added.
For example, by all in jth group, treated that data flow is weighted summation, can obtain the addition of jth group
Signal afterwards.Wherein, j is positive integer, and the value range of j is 1 to K.
Wherein, weighted sum is by all in jth group treated data flows respectively multiplied by corresponding weight, then phase
Add.Wherein, weight used in weighted sum can be preconfigured.
The K signals after being added are multiplexed respectively with lead code, obtain K multiplexed signals by S1024.
The process can also execute parallel.Specifically, j-th of signal after being added is multiplexed with lead code,
Obtain j-th of multiplexed signal.
That is, adding lead code before each of K sequences after being added sequence after being added.
Optionally, the lead code includes repeating R2 Zadoff-Chu sequence (referred to as ZC sequence) and repeating R3 times
Zadoff-Chu conjugate sequence, wherein R2 and R3 is positive integer.That is, lead code can be divided into 2 parts, first
Part is the Zadoff-Chu sequence for repeating R2 times, and second part is the Zadoff-Chu conjugate sequence for repeating R3 times, R2 and R3
Value can be configuration.Wherein, two parts included by lead code can be first part in preceding second part rear, or
Second part is in preceding first part rear.That is, can first send ZC sequence retransmits ZC conjugate sequence；Or it can also be with
First transmission ZC conjugate sequence retransmits the ZC sequence present invention and does not limit this.
In the embodiment of the present invention, Zadoff-Chu conjugate sequence is referred to as conjugation Zadoff-Chu sequence, or referred to as
For ZC conjugate sequence, the present invention does not limit this.
Zadoff-Chu sequence can indicate are as follows: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 embodiment of the present invention to the value of u, F and p without limitation, as an example, u=1, F=2k- 1, k=2,3 ..., p
=-(F+1)/2.
That is, the data flow with same spread factor F is placed on one group by each channel, every group is all independently executed
The process being multiplexed in weighted sum and S1024 in S1023.
K multiplexed signals are weighted summation by S1025, obtain current group data stream treated signal.
Specifically, it by K multiplexed signals respectively multiplied by corresponding weight, then sums.The value of weight can be in advance
Configuration.
S1025 is it is to be understood that be added the signal weighting of same channel difference spreading length.
If a certain group data stream in M group data stream only includes a data flow, which is handled
The process for obtaining corresponding signal can be with are as follows: the physical layer signaling in the data flow is scrambled, and successively carry out channel coding and
Interweave, the physical layer signaling that obtains that treated；The data message scrambling in the data flow, and successively carry out channel coding and friendship
It knits, the data message that obtains that treated；By frame origin identification, treated the physical layer signaling and treated the number
It is multiplexed according to message, obtains multiplexed code stream；According to spreading code corresponding with the data flow, to the multiplexed code stream
It is modulated, obtains modulated data flow；Modulated data flow is multiplexed with lead code, the letter that obtains that treated
Number.
In the embodiment of the present invention, the frame structure of M group data stream (or data of referred to as M channel) can with as shown in fig. 6,
2 groups, i.e. M=2 are wherein shown in Fig. 6.Above-mentioned operation is performed both by for each of these group data stream, to obtain M
Treated signal.
S103, by the M, treated that signal carries out numerical frequency moves, and obtains digital signal after being added.
Here addition can be weighting summation, also referred to as weighted sum, and weight used in weighting summation is preparatory
Configuration.
Then S103 is added it is to be understood that the signal numerical frequency of different channels is moved.
S104 handles the digital signal, obtains transmitting signal.
Specifically, S104 include: by the digital signal after digital-to-analogue conversion, be converted to analog signal；By the simulation
After signal passes through up-conversion, radiofrequency signal is generated；By the radiofrequency signal after power amplification, the transmitting signal is obtained.
Wherein it is possible to realize the conversion of digital signal to analog signal by digital analog converter (D/A).
S105 sends the transmitting signal.
Specifically, the antenna that can pass through sending node, is sent to receiving node for the transmitting signal.
Based on above description, in the embodiment of the present invention, the method that concentrator 20 sends transmitting signal can be such as Fig. 7 institute
Show.Wherein, the radio frequency output in Fig. 7 is the transmitting signal in S105.Although should be noted that M=2 group data shown in Fig. 7
Stream, every group includes 2 data flows, and those skilled in the art are it is understood that the quantity of data flow can be more.
In this way, the sending node in the embodiment of the present invention may be implemented to send multiple data flows simultaneously, it can be to avoid multiple
Power consumption caused by transmission.And there are multiple spreading codes of the cyclic shift of different delayed time by distribution, it is ensured that data flow
Between mutual independence.
For scene shown in FIG. 1, N number of data flow can be sent to 1~N of terminal by concentrator 20 simultaneously.In such manner, it is possible to
Reduce the sending power consumption of concentrator 20, can be realized wide area covering and at the same time sending.
As it can be seen that the embodiment of the present invention proposes the interconnected method between the completely new node of one kind, this method can satisfy low function
Consumption, wide area covering, the demand of access magnanimity terminal and low cost.
Fig. 8 is another schematic flow chart of the method for the information transmission of the embodiment of the present invention.Method shown in Fig. 8 is
The method of downlink reception, i.e. terminal 30 receive the method for emitting signal transmitted by concentrator 20, and this method is executed by terminal 30.
Specifically, each terminal only receives the channel data of oneself access.The terminal different for any two, the received number of institute
According to channel is different or the channel of received data is identical but spreading length is different, alternatively, the channel of received data
Spreading codes all the same with spreading length but with different cyclic shifts.Each data flow is connect using independent receiving node
It receives.This method comprises:
S201 receives transmitting signal.
Specifically, the transmitting signal that sending node is sent is received by receiving antenna.For example, it may be concentrator 20 exists
The data flow in transmitting signal that S105 is sent.
Terminal can determine in transmitting signal according to channel number (Channel ID, CID), spreading length F and cyclic shift d
Required received data flow.
Specifically, terminal is screened according to CID first, if can not determine according only to CID, is further determined according to F, such as
Fruit can not determine according to CID and F, then determine according further to d.
S202 handles the transmitting signal, obtains digital signal.
Specifically, radiofrequency signal can be obtained by the transmitting signal after low noise is amplified；The radiofrequency signal is led to
After crossing down coversion, analog signal is obtained；By the analog signal after analog-to-digital conversion, the digital signal is obtained.
That is, transmitting signal can be amplified by low noise, down coversion, analog-to-digital conversion (A/D) is transformed into digital letter
Number.
S203 synchronizes processing to the digital signal, the signal after being synchronized.
Specifically, S203 may include: the first Zadoff-Chu sequence and first obtained in the digital signal
Zadoff-Chu conjugate sequence；According to first Zadoff-Chu sequence and the first Zadoff-Chu conjugate sequence, really
Determine frequency deviation and symbol deviation；According to the frequency deviation and the symbol deviation, the digital signal is compensated；To the compensation
Signal later carries out de-spreading operation, the signal after obtaining described synchronize.
Here synchronization process may include carrier synchronization, sign synchronization and frame synchronization.That is, digital signal is synchronous
3 parts, respectively carrier synchronization, sign synchronization and frame synchronization can be divided into.
Wherein it is possible to carried out using Zadoff-Chu sequence/Zadoff-Chu conjugate sequence characteristic carrier synchronization and
Sign synchronization.
Wherein, according to first Zadoff-Chu sequence and the first Zadoff-Chu conjugate sequence, frequency deviation is determined
With symbol deviation, comprising: according to first Zadoff-Chu sequence and preset 2nd Zadoff-Chu conjugate sequence, pass through
Fast Fourier Transform (FFT) calculates first frequency；According to the first Zadoff-Chu conjugate sequence and preset 2nd Zadoff-
Chu sequence calculates second frequency by Fast Fourier Transform (FFT)；According to the first frequency and the second frequency, calculate
To the frequency deviation and the symbol deviation.
In the present embodiment, system frequency deviation is expressed as fo, symbol deviation is expressed as to.Furthermore it is possible to by first frequency table
It is shown as f1, second frequency is expressed as f2.Calculating frequency deviation fo and symbol deviation to may include following three step:
Step 1: if the first Zadoff-Chu sequence are as follows:
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 are as follows:
It is understood that the 2nd Zadoff-Chu conjugate sequence is local Zadoff-Chu conjugate sequence.
It is possible to further pass through Fast Fourier Transform (FFT) (Fast Fourier according to r (n) and x (n)
Transformation, FFT) calculate f1.
That is, the first Zadoff-Chu sequence is obtained multiplied by the 2nd locally generated Zadoff-Chu conjugate sequence
It arrives:
Ignore noise, then calculate the frequency f1 of sequences y (n) signal after product with FFT are as follows:
Step 2: if the first Zadoff-Chu conjugate sequence are as follows:
Wherein, fs is character rate.It is understood that the first Zadoff-Chu conjugate sequence is the sequence received.
If the second Zadoff-Chu sequence are as follows:
It is understood that the second Zadoff-Chu sequence is local Zadoff-Chu sequence.
It is possible to further calculate f2 by FFT according to r (n) and x (n).
That is, the first Zadoff-Chu conjugate sequence is obtained multiplied by the second locally generated Zadoff-Chu sequence
It arrives:
Ignore noise, then calculate the frequency f2 of the sequences y (n) after product with FFT are as follows:
Third step can calculate fo and to based on f1 and f2 that the above-mentioned first step and second step calculate separately.
In this way, can compensate the frequency deviation for receiving sequence according to calculated frequency deviation fo and symbol deviation to and symbol is inclined
Difference.
Further, it is possible to do data symbol de-spreading operation according to the sequence after compensating for frequency offset and symbol deviation.Carry out frame
Simultaneously operating.
De-spreading operation is the symbol sebolic addressing received multiplied by locally generated spreading code, the sequence after the product that then adds up
Column.
Assuming that Receiving Order is classified as r (n), local m-sequence is p (n), de-spreading operation are as follows:
Wherein, F is spreading code, and p (n) is that local m-sequence does after 1 mapping 1,0 is mapped as -1 and obtains.
Here, the sequences y (n) after the de-spreading operation can be regarded as the signal after synchronizing.
Optionally, after dispreading, need detection frame primary sign, specifically can using despreading after reception sequence with
The method of start-of-frame cross-correlation.
Assuming that the sequences y (n) after despreading, the sub- sfd (n) of start-of-frame number, then cross-correlation calculation:
Wherein, the length of R1 frame origin identifications, frame origin identification are the binary sequence of R1 bit.Sfd (n) is that frame rises
Beginning symbolic code, which is done, to be obtained after 1 mapping 1,0 is mapped as -1.
When the cross-correlation absolute value be greater than setting threshold value, just have found start-of-frame number, synchronizing process terminates.
S204 handles the signal after described synchronize, obtains physical layer signaling.
Specifically, after frame synchronization, the sequences y (n) of despreading is demodulated, is deinterleaved, channel coding and descrambling are solved, thus
Obtain physical layer signaling.
As in the foregoing embodiment, physical layer signaling includes length field, control domain, identification field and verification domain.Wherein, it identifies
The data message is filtered for physical layer in domain.
It further, can also include that verification calculating is carried out to physical layer signaling after S204.
If verification is incorrect, directly exit.That is, if verification is incorrect, not subsequent data of re-demodulation,
It exits this and receives operation.
If verification is correct, subsequent processing can be executed.It specifically, can be right according to the rule of the filtering frames of configuration
Control domain and identification field are handled, if not needed to receive load according to filtering rule, are exited current receive and are operated.If root
It needs to receive load according to filtering rule, then continues to execute reception operation, obtain data message.
Optionally, it if verifying correctly the physical layer signaling, and needs to receive load according to filtering rule determination, such as scheme
Shown in 9, this method be can further include:
S205 handles the signal after physical layer signaling, obtains data message.
Specifically, if verifying correctly to the physical layer signaling, and need to receive load according to filtering rule determination, then it is right
Signal after the physical layer signaling is demodulated, is deinterleaved, channel decodes and descrambling, obtains the data message.
That is, if needing to receive load according to filtering rule, then by the sequence after the physical layer signaling of despreading
Y (n) is demodulated, and is deinterleaved, and channel coding and descrambling is solved, thus output data message.
Based on above description, in the embodiment of the present invention, the method that terminal receives transmitting signal can be as shown in Figure 10,
In, the radio frequency input in Figure 10 is the transmitting signal in S201.The received method can be understood as four following steps:
The first step receives signal by antenna first, amplifies, down coversion, analog-to-digital conversion by low noise, be transformed into digital letter
Number.
Second step, digital signal first carry out synchronization process, including carrier synchronization, sign synchronization and frame synchronization.
Third step, the signal after synchronizing first carry out physical layer signaling demodulation, deinterleave, channel decoding and descrambling.
4th step receives correct physical layer signaling, carries out the filtering and processing of frame, if necessary to receive physical load,
Just the signal after physical layer signaling is demodulated, is deinterleaved, channel decoding and descrambling, output data message.
It should be understood that receiving node concurrently receives multiple data flows, only Fig. 8 or figure need to be executed respectively for each data flow
Method shown in 9.
As it can be seen that the embodiment of the present invention proposes the interconnected method between the completely new node of one kind, this method can satisfy low function
Consumption, wide area covering, the demand of access magnanimity terminal and low cost.
Figure 11 is another schematic flow chart of the method for the information transmission of the embodiment of the present invention.Method shown in Figure 11
It is the method that uplink is sent, i.e. terminal 30 sends the method for emitting signal to concentrator 20, and this method is executed by terminal 30.The party
Method includes:
S301 selects channel and spreading factor.
Specifically, channel number (Channel ID, CID) and spreading factor F are selected.Wherein, spreading factor F is referred to as
Spreading length or spread code length.
S302 handles physical layer signaling, the physical layer signaling that obtains that treated；Data message is handled,
The data message that obtains that treated.
S303, by frame origin identification, treated the physical layer signaling and described treated that data message carries out
Multiplexing, obtains multiplexed code stream.
S304 is modulated the multiplexed code stream, obtains modulated signal.
Specifically, can multiplexed code stream carry out planisphere mapping, and the planisphere mapping after signal into
The modulation of row Direct Sequence Spread Spectrum, obtains modulated signal.
Wherein, spreading factor used in modulating is selected in S301.
Lead code and the modulated signal are multiplexed, obtain digital signal by S305.
S306 handles the digital signal, obtains transmitting signal.
S307 sends the transmitting signal.
Specifically, the transmitting signal is sent on the selected channel of S301.
In the present embodiment, S302 to S305 is referred to the sending method that 3 part of earlier figures is executed by concentrator 20, Figure 11
Process performed by middle terminal is similar with its.S306 to S307 is referred to the S104 that 2 part of earlier figures is executed by concentrator 20
With the sending method of S105, process performed by terminal is similar with its in Figure 11.To avoid repeating, which is not described herein again.
It can be seen that method shown in Figure 11 it also will be understood that are as follows: the first step, select CID, select spread code length F.The
Two steps, scramble message, then carry out channel coding, interweave, and export to multiplexer.Third step, physical layer signaling is scrambled,
Channel coding interweaves, and exports to multiplexer.4th step, data message, physical layer signaling and frame origin identification by multiplexer it
Afterwards, it is modulated.Output is to digital analog converter after 5th step, modulated signal and lead code multiplexing.6th step, digital-to-analogue conversion
The analog signal of device output passes through up-conversion, after power amplification, is sent by antenna.
Wherein, any one terminal in Fig. 1 all independently executes the method that uplink shown in Figure 11 is sent.Correspondingly,
Concentrator 20 can execute uplink receiving, obtain the transmitting signal that one or more terminals are sent.As shown in figure 12, concentrator 20
It can receive the signal that 4 terminals are sent respectively, which can have different frame structures.Specifically, concentrator 20 is held
The process of row uplink receiving is similar with the execution of terminal 30 process of downlink reception, as shown in aforementioned S201 to S205, to avoid weight
Multiple, which is not described herein again.
Figure 13 is a structural block diagram of the node of the embodiment of the present invention.Node 50 shown in Figure 13 can be concentrator
20, comprising: grouping module 501, first processing module 502, Second processing module 503, third processing module 504 and sending module
505。
Pending data flow point is M group data stream by grouping module 501, and M group data stream is corresponded with M channel,
In, M is positive integer；
First processing module 502, each group data stream in the M group data stream for being obtained to grouping module 501
It is respectively processed, obtains M treated signal；
Second processing module 503, the M for obtaining first processing module 502 treated that signal counts
Word frequency is moved, and obtains digital signal after being added；
Third processing module 504 is obtained for handling the digital signal that Second processing module 503 obtains
Emit signal；
Sending module 505, the transmitting signal obtained for sending third processing module 504.
Optionally, the spreading code is pseudorandom m-sequence or Gold code.
Optionally, described to add up to weighting summation, and weight used in the weighting summation is preconfigured.
Optionally, as a kind of implementation, as shown in figure 14, first processing module 502 may include distribution sub module
5021, the first processing submodule 5022, second processing submodule 5023, multiplexing submodule 5024 and weighting submodule 5025.
First processing module 502 can be used for that the i-th group data stream in the M group data stream is handled as follows, and obtain
To treated the signal of i-th in the M treated signal, the value range that wherein i is positive integer and i is 1 to M.
Specifically,
Distribution sub module 5021 is used to multiple data flows included by described i-th group being divided into K group, is the multiple data
Each data flow in stream distributes spreading code, wherein the code length of the spreading code of the data flow of the different groups in the K group is not
Equal, the code length of the spreading code of same group of the data flow in the K group is equal and has the cyclic shift of different delayed time,
K is the quantity of multiple data flows included by positive integer and K are less than or equal to described i-th group；
First processing submodule 5022 is used for according to corresponding spreading code, to each data flow in the multiple data flow
It is respectively processed, obtains multiple treated data flows；
Second processing submodule 5023 is used to be weighted and ask for treated in every group of K group data flow
With obtain K signals after being added；
Multiplexing submodule 5024 is used to for the K signals after being added being multiplexed respectively with lead code, obtains K again
Signal after；
Weighting submodule 5025 is used to the K multiplexed signals being weighted summation, obtains i-th of processing
Signal afterwards.
Optionally, it is preconfigured that weighting submodule 5025, which is weighted weight used in summation,.
Optionally, the lead code includes the Zadoff-Chu sequence for repeating R2 times and the Zadoff-Chu for repeating R3 times total
Yoke sequence, wherein R2 and R3 is positive integer.
The Zadoff-Chu sequence indicates are as follows:
Wherein, j is imaginary unit, and p is integer, and u and F are relatively prime, and 0 <u < F.
Optionally, as a kind of implementation, the first processing submodule 5022 is specifically used for: for each data flow, holding
The following operation of row, the data flow that obtains that treated:
The physical layer signaling scrambling in data flow, and channel code and interleaving is successively carried out, the physics that obtains that treated
Layer signaling；The data message scrambling in the data flow, and channel code and interleaving is successively carried out, the data that obtain that treated
Message；By frame origin identification, treated the physical layer signaling and it is described treated that data message is multiplexed, obtain
Multiplexed code stream；According to spreading code corresponding with the data flow, the multiplexed code stream is modulated, is obtained described
Data flow that treated.
Wherein, identical as the scrambled method to the data message to the scrambled method of the physical layer signaling or not
Together；And/or it is identical as the method for the channel coding to the data message to the method for the channel coding of the physical layer signaling
Or it is different；And/or it is identical as the method for the intertexture to the data message or not to the method for the intertexture of the physical layer signaling
Together.
For example, the method for channel coding can be convolutional code, Turbo code or LDPC code etc..The method of intertexture can be
Block interleaving etc..
Optionally, as a kind of implementation, the first processing submodule 5022 is according to spread spectrum corresponding with the data flow
Code, is modulated the multiplexed code stream, obtains treated the data flow, comprising: multiplexed code stream is carried out
Planisphere mapping, and the signal after planisphere mapping is carried out Direct Sequence Spread Spectrum tune using the corresponding spreading code
System obtains treated the data flow.
Wherein, planisphere mapping may include at least one of the following: BPSK, QPSK, QAM and difference mapping.Difference
Mapping can be DBPSK or DQPSK etc..Wherein, the spreading factor of band spectrum modulation can be expressed as F, for example, F=2k-1,k
=2,3 ....Spreading code used in band spectrum modulation is pseudorandom m-sequence or Gold code.M-sequence can be by generator polynomial
And initial value is determined.For example, when F=63, the generator polynomial of m-sequence are as follows: f (x)=x6+ x+1, wherein initial value can be with
It is preconfigured.
Wherein, the physical layer signaling includes length field, control domain, identification field and verification domain, wherein the identification field is used
The data message is filtered in physical layer.
Wherein, the frame origin identification is the binary sequence of R1 bit, wherein R1 is positive integer.
Optionally, as a kind of implementation, third processing module 504 can be specifically used for: the digital signal is passed through
After digital-to-analogue conversion, analog signal is converted to；By the analog signal by generating radiofrequency signal after up-conversion；By the radio frequency
Signal obtains the transmitting signal after power amplification.
The method that node 50 can be realized earlier figures 2 to the information transmission shown in Fig. 7 executed by concentrator 20, i.e. downlink
The method of transmission, to avoid repeating, which is not described herein again.
In addition, node 50 (concentrator 20) also may include at least one processor and memory, processor and memory
Communication is attached by bus system etc..Wherein, for storing instruction, processor can be used for executing memory institute to memory
The instruction of storage, and processor executes the method that the aforementioned information transmission realized by concentrator 20 may be implemented when the instruction, i.e.,
The method that downlink is sent.
Processor can be central processing unit (Central Processing Unit, CPU) or have data processing
The processing unit of ability and/or the other forms of instruction execution capability, and can control other components in the node to hold
The desired function of row.
Memory can be volatile memory and/or nonvolatile memory.The volatile memory for example can be with
Including random access memory (RAM) and/or cache memory (cache) etc..The nonvolatile memory for example may be used
To include read-only memory (ROM), hard disk, flash memory etc..
Memory can store one or more program instructions, and processor can run described program instruction, on realizing
The method that the method for stating the information transmission executed by concentrator 20, i.e. downlink are sent.
Figure 15 is a structural block diagram of the node of the embodiment of the present invention.Node 60 shown in figure 15 can be terminal 30,
Include: selecting module 601, first processing module 602, the first Multiplexing module 603, modulation module 604, the second Multiplexing module 605,
Second processing module 606 and sending module 607.
Selecting module 601, for selecting channel and spreading factor.
First processing module 602, for handling physical layer signaling, the physical layer signaling that obtains that treated；Logarithm
It is handled according to message, the data message that obtains that treated.
First Multiplexing module 603, for will be after frame origin identification, treated the physical layer signaling and the processing
Data message be multiplexed, obtain multiplexed code stream.
Modulation module 604 obtains modulated signal for being modulated to the multiplexed code stream.
Second Multiplexing module 605 obtains digital signal for lead code and the modulated signal to be multiplexed.
Second processing module 606 obtains transmitting signal for handling the digital signal.
Sending module 607, for sending the transmitting signal.
The node 60 can be used for executing the method sent shown in earlier figures 11 by the uplink that terminal 30 executes, to avoid
It repeats, which is not described herein again.
In addition, node 60 (i.e. terminal 30) also may include at least one processor and memory, processor and memory
Communication is attached by bus system etc..Wherein, for storing instruction, processor can be used for executing memory institute to memory
The instruction of storage, and processor executes the method that the aforementioned uplink transmission realized by terminal 30 may be implemented when the instruction.
Processor can be the processing of CPU or the other forms with data-handling capacity and/or instruction execution capability
Unit, and can control other components in the node to execute desired function.
Memory can be volatile memory and/or nonvolatile memory.The volatile memory for example can be with
Including random access memory (RAM) and/or cache memory (cache) etc..The nonvolatile memory for example may be used
To include read-only memory (ROM), hard disk, flash memory etc..
Memory can store one or more program instructions, and processor can run described program instruction, on realizing
State the method sent by the uplink that terminal 30 executes.
Although describing example embodiment by reference to attached drawing here, it should be understood that above example embodiment are only 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 changes wherein
And modification, it is made without departing from the scope of the present invention and spiritual.All such changes and modifications are intended to be included in appended claims
Within required the scope of the present invention.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the 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 device and method can pass through it
Its mode is realized.For example, apparatus embodiments described above are merely indicative, for example, the division of the unit, only
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be tied
Another equipment is closed or is desirably integrated into, or some features can be ignored or not executed.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the present invention and help to understand one or more of the various inventive aspects,
To in the description of exemplary embodiment of the present invention, each feature of the invention be grouped together into sometimes single embodiment, figure,
Or in descriptions thereof.However, the method for the invention should not be construed to reflect an intention that i.e. claimed
The present invention claims features more more than feature expressly recited in each claim.More precisely, such as corresponding power
As sharp claim reflects, inventive point is that the spy of all features less than some disclosed single embodiment can be used
Sign is to solve corresponding technical problem.Therefore, it then follows thus claims of specific embodiment are expressly incorporated in this specific
Embodiment, wherein each, the claims themselves are regarded as separate embodiments of the invention.
It will be understood to those skilled in the art that any combination pair can be used other than mutually exclusive between feature
All features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so disclosed any method
Or all process or units of equipment are combined.Unless expressly stated otherwise, this specification (is wanted including adjoint right
Ask, make a summary and attached drawing) disclosed in each feature can be replaced by providing identical, equivalent, or similar purpose alternative features.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention
Within the scope of and form different embodiments.For example, in detail in the claims, embodiment claimed it is one of any
Can in any combination mode come using.
Various component embodiments of the invention can be implemented in hardware, or to run on one or more processors
Software module realize, or be implemented in a combination thereof.It will be understood by those of skill in the art that can be used in practice
Microprocessor or digital signal processor (DSP) realize some moulds in article analytical equipment according to an embodiment of the present invention
The some or all functions of block.The present invention is also implemented as a part or complete for executing method as described herein
The program of device (for example, computer program and computer program product) in portion.It is such to realize that program of the invention can store
On a computer-readable medium, it or may be in the form of one or more signals.Such signal can be from internet
Downloading obtains on website, is perhaps provided on the carrier signal or is provided in any other form.
The above description is merely a specific embodiment or to the explanation of specific embodiment, protection of the invention
Range is not limited thereto, and anyone skilled in the art in the technical scope disclosed by the present invention, can be easily
Expect change or replacement, should be covered by the protection scope of the present invention.Protection scope of the present invention should be with claim
Subject to protection scope.
Claims (9)
1. a kind of method of information transmission characterized by comprising
It is M group data stream by pending data flow point, M group data stream is corresponded with M channel, wherein M is positive integer；
Each group data stream in the M group data stream is respectively processed, M is obtained treated signal；
By the M, treated that signal carries out numerical frequency moves, and obtains digital signal after being added；
The digital signal is handled, transmitting signal is obtained；
Send the transmitting signal；
Wherein, each group data stream in the M group data stream is handled, and obtains M treated signal, packet
It includes:
The i-th group data stream in the M group data stream is handled as follows, the M is obtained treated i-th in signal
A treated signal, the value range that wherein i is positive integer and i is 1 to M:
Multiple data flows included by described i-th group are divided into K group, are that each data flow in the multiple data flow is distributed and expanded
Frequency code, wherein the code length of the spreading code of the data flow of the different groups in the K group is unequal, same in the K group
The code length of the spreading code of one group of data flow is equal and has the cyclic shift of different delayed time, and K is positive integer and K is less than or equal to
The quantity of multiple data flows included by described i-th group；
According to corresponding spreading code, each data flow in the multiple data flow is respectively processed, multiple processing are obtained
Data flow afterwards；
For treated in every group of K group data flow, it is weighted summation, obtains K signals after being added；
The K signals after being added are multiplexed respectively with lead code, obtain K multiplexed signals；
The K multiplexed signals are weighted summation, obtain described i-th treated signal.
2. the method according to claim 1, wherein described according to corresponding spreading code, to the multiple data
Each data flow in stream is respectively processed, and obtains multiple treated data flows, comprising:
For each data flow, following operation is executed, the data flow that obtains that treated:
The physical layer signaling scrambling in data flow, and channel code and interleaving is successively carried out, the physical layer letter that obtains that treated
It enables；
The data message scrambling in the data flow, and channel code and interleaving is successively carried out, the datagram that obtains that treated
Text；
By frame origin identification, treated the physical layer signaling and it is described treated that data message is multiplexed, obtain
Multiplexed code stream；
According to spreading code corresponding with the data flow, the multiplexed code stream is modulated, obtains that described treated
Data flow.
3. according to the method described in claim 2, it is characterized in that,
Scrambled method to the physical layer signaling and the scrambled method to the data message are identical or different；And/or
It is identical as the method for the channel coding to the data message to the method for the channel coding of the physical layer signaling or not
Together；And/or
It is identical or different to the method for the method and the intertexture to the data message of the intertexture of the physical layer signaling.
4. according to the method described in claim 2, it is characterized in that, basis spreading code corresponding with the data flow, right
The multiplexed code stream is modulated, and obtains treated the data flow, comprising:
The multiplexed code stream is carried out planisphere mapping, and using the corresponding spreading code after planisphere mapping
Signal carry out Direct Sequence Spread Spectrum modulation, obtain treated the data flow.
5. according to the method described in claim 2, it is characterized in that, the physical layer signaling includes length field, control domain, mark
Domain and verification domain, wherein the identification field filters the data message for physical layer.
6. the method according to claim 1, wherein the lead code includes the Zadoff-Chu sequence for repeating R2 times
Column and repetition R3 times Zadoff-Chu conjugate sequence, wherein R2 and R3 is positive integer.
7. the method according to claim 1, wherein described add up to weighting summation, and weighting summation institute
The weight used is preconfigured.
8. method according to any one of claims 1 to 7, which is characterized in that it is described that the digital signal is handled,
Obtain transmitting signal, comprising:
By the digital signal after digital-to-analogue conversion, analog signal is converted to；
By the analog signal by generating radiofrequency signal after up-conversion；
By the radiofrequency signal after power amplification, the transmitting signal is obtained.
9. a kind of node, which is characterized in that the node is for executing the described in any item methods of preceding claims 1 to 8.
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