CN106160922A - Data transmission method for uplink, coding/decoding method and device - Google Patents

Abstract

The invention provides a kind of data transmission method for uplink, coding/decoding method and device, wherein, the method includes, utilizes network code configuration information coded data, wherein, before these data include data to be sent that current time receives and current time reception and the data that sent；Data after coding are sent to destination node.By the present invention, solve data transmission credibility present in correlation technique low, the problem that time delay is big, improve the reliability of data transmission, reduce the time delay of data transmission.

Description

Data transmission method for uplink, coding/decoding method and device

Technical field

The present invention relates to the communications field, in particular to a kind of data transmission method for uplink, coding/decoding method and device.

Background technology

Along with various terminals (such as: intelligent terminal) with multiple business is flourish, future wireless network presents close Collection deployment, diverse services, heterogeneous network the variety pattern deposited.When website is densely distributed, subscriber equipment (User Equipment, referred to as UE) frequently switching can bring the problems such as data interruption, throughput degradation, cell virtual Technology can effectively solve the problem that the mobility under super-intensive network (Ultra Density Network, referred to as UDN) scene Problem, it is ensured that uniform Consumer's Experience, promotes throughput of system simultaneously.The virtual subdistrict of UE is by multiple transmission joints Point (referred to as Transport Point, referred to as TP) is constituted, and one of them is host node Master TP, is responsible for control Surface function processed, other are the data transmission that cooperated together with auxiliary node Slave TP, Master TP and Slave TP.

Owing to disposing intensive small station addressing difficulty, cable lease expenses is expensive, and the most most of small stations do not have wired The ability of passback, a kind of method of solution is first with core net, data to be had the joint of wired connection by eating dishes without rice or wine to send to Point (such as macro station etc.), then by these nodes, data are passed to core net, or in turn, first possessed wired by some The node of passback ability receives the data from core net, then by eating dishes without rice or wine to pass to data destination node, forms one Individual wireless multi-hop network.These and core net have wired connection and help surroundings nodes to send simultaneously and receive wireless backhaul The node of data can referred to as return anchor point.For future wireless network, due to the increase of frequency spectrum, on a large scale The application of the various advanced technologies such as MIMO Massive MIMO, compared to access network side, the appearance of wireless backhaul network Amount, reliability and time delay are likely to be the bottleneck place of restriction network performance.

It addition, in the technology of virtual subdistrict, Master TP and Slave TP completes the data of user by the way of cooperation Transmission.The business datum of user, control signaling, system configuration etc. be required for the most effectively communicating and Alternately, equally, under UDN scene, between the most most of TP, there is no wired connection, can only be wirelessly Carry out the mutual of data and information.Wireless connections between this TP can be referred to as wireless forward pass link, with difference Return link between TP and core net.

Compared to wire transmission, due to the time variation of wireless channel in being wirelessly transferred, the problem such as multipath fading and interference, The loss of packet and the problem of error of transmission can occur.Feedback overhead and time delay that the re-transmission of data brings will affect The efficiency of data transmission, increases the time delay of data transmission, and especially the latter, for the business of some delay sensitives Can not put up with.

Wireless backhaul and wireless forward pass all also exist bigger query in terms of reliability and time delay.How to promote wireless biography Defeated reliability, reduces and retransmits the delay problem brought, and promotes wireless backhaul and the efficiency of transmission of forward pass, becomes future One critical problem in dense deployment small station.

Low for data transmission credibility present in correlation technique, that time delay is big problem, the most not yet proposes effective Solution.

Summary of the invention

The invention provides a kind of data transmission method for uplink, coding/decoding method and device, at least to solve correlation technique exists Data transmission credibility low, problem that time delay is big.

According to an aspect of the invention, it is provided a kind of data transmission method for uplink, including: utilize network code configuration letter Breath encodes described data, wherein, when described data include before data to be sent that current time receives and current time Carve data that are that receive and that sent；Data after coding are sent to destination node.

Further, utilize network code configuration information to encode described data to include: in one or more via nodes Main via node determines described network code configuration information, and encodes described data according to described network code configuration information； And/or, the auxiliary via node in the one or more via node is according to described network code configuration information coding Data, wherein, the part in described network code configuration information receives from described main via node, described network Another part in coded layout information is to be calculated according to the part received from described main via node.

Further, before the data after coding are sent to described destination node, also include: described main via node And/or described auxiliary via node will partly or entirely be sent to described destination node in described network code configuration information.

Further, described network code configuration information includes at least one following information: network code mode, coding Matrix, coding vector.

Further, described method includes at least one of: described main via node by described network code mode, Described encoder matrix and described coding vector are sent to described auxiliary via node and described destination node, wherein, described net Network coded system, described encoder matrix and described coding vector encode described data for described auxiliary via node, described Network code mode, described encoder matrix and the described coding vector data after described destination node decoding coding； Described network code mode and described coding vector are sent to described auxiliary via node and described mesh by described main via node Node, wherein, described network code mode and described coding vector determine described coding for described auxiliary via node Matrix, described network code mode, described encoder matrix and described coding vector encode institute for described auxiliary via node State data, described network code mode and described coding vector and determine described encoder matrix, institute for described destination node State network code mode, described encoder matrix and the described coding vector data after described destination node decoding coding； Described network code mode is sent to described auxiliary via node and described destination node by described main via node, wherein, Described network code mode determines described encoder matrix and described coding vector for described auxiliary via node and will determine Described encoder matrix and described coding vector are sent to described destination node, described network code mode, described coding square Battle array and described coding vector encode described data, described network code mode, described coding for described auxiliary via node Matrix and described coding vector data after described destination node decoding coding.

Further, the data after coding are sent to described destination node through antenna, comprise determining that on each antenna Network code mode and coding vector；Described network code mode and described coding vector according to determining are on each antenna Send the data after coding.

Further, described data are information sequence d=[s₁,s₂,...,s_p], wherein, p≤N and p > 1, front m letter Breath bit is the information bit of the data described to be sent that current time receives, and rear p-m+1 information bit is described Before current time reception and the information bit of data that sent, N is the relaying for sending described data The number of node or the number of the antenna of described via node.

Further, front m the information bit in described information sequence does not carry out network code.

Further, the data after the coding on each antenna are: $x_k=d\·g_k=[s_1,s_2,...,s_p]\·\left[\begin{array}{c}{g}_{k1}\\ g_{k2}\\ ...\\ g_{\mathrm{kp}}\end{array}\right],$ Wherein, g_kFor the coding vector on described each antenna.

Further, when using polynary territory network code mode, described main via node structure GF territory (2^mOn) N × N-dimensional Cauchy matrix G, wherein, m is satisfied $2^m\≥\left(\begin{array}{c}{p}^2\\ p-1\end{array}\right)$ Minima；Coding on described each antenna to Amount g_kFor a column vector in Cauchy matrix G.

Further, as antenna total number N=2, use network code mode based on XOR, encoded after Information sequence is X=[x₁,x₂]；Wherein, x₁=s_i, x₂=s_i⊕s_i-1, s_iFor current time receive described in treat Send data, s_i-1For before current time reception and the data that sent；x₁And x₂It is modulated distinguishing afterwards Antenna 1 and antenna 2 send；For multiple single antenna via nodes, x₁And x₂It is modulated distinguishing afterwards Node 1 and node 2 send.

Further, the antenna that in antenna 1 and antenna 2, channel condition is good is selected to send x₁；Or, select node 1 The node good with channel condition in node 2 sends x₁。

Further, when using complex field network code mode, construct complex field network code matrix g_k, wherein, x_k=d g_kWith information sequence [s₁,s₂,...,s_pMap one by one between].

According to a further aspect in the invention, it is provided that a kind of data decoding method, including: receive one or more relaying The part or all of network code configuration letter of the data after the coding that node sends and the data after decoding described coding Breath, wherein, described data include the data not received and received before the data not received described in receiving Data；The data after described coding are decoded according to described network code configuration information.

Further, described network code configuration information includes at least one following information: network code mode, coding Matrix, coding vector.

Further, described method includes at least one of: receive in the master in the one or more via node Described network code mode, described encoder matrix and the described coding vector that the node that continues sends；Receive one or many The described network code mode of the main via node transmission in individual via node and described coding vector, according to described network Coded system and described coding vector determine described encoder matrix；Receive in the master in the one or more via node The described network code mode that the node that continues sends, receives the auxiliary via node in the one or more via node at root The described encoder matrix sent after determining described encoder matrix and described coding vector according to described network code mode and institute State coding vector.

Further, the data after decoding described coding according to described network code configuration information include: described in judgement The data received whether correct decoding；In the case of judged result is for being, according to the described data received and The data not received described in the decoding of described network code configuration information；In the case of judged result is no, according to institute State the data and the described data not received received described in the decoding of network code configuration information.

Further, after the data after decoding described coding according to described network code configuration information, also include: Judge whether the data after being correctly decoded described coding；In the case of judged result is for being, preserve after being correctly decoded Data；In the case of judged result is no, preserve incorrectly decoded data, wherein, described incorrectly decoded Data are for the data aggregate decoding received with the subsequent time of current time.

According to a further aspect in the invention, it is provided that a kind of data sending device, including: coding module, it is used for utilizing Network code configuration information encodes described data, wherein, described data include data to be sent that current time receives with Before current time reception and the data that sent；First sending module, for sending the data after coding To destination node.

Further, described coding module includes: the first coding unit, the master in one or more via nodes Via node determines described network code configuration information, and encodes described data according to described network code configuration information； And/or, the second coding unit, the auxiliary via node in the one or more via node is compiled according to described network Code configuration information encodes described data, and wherein, the part in described network code configuration information is from described main relaying joint Point receives, and the another part in described network code configuration information is according to the portion received from described main via node Divide and be calculated.

Further, described device also includes: the second sending module, for described main via node and/or described auxiliary in The node that continues will partly or entirely be sent to described destination node in described network code configuration information.

Further, described network code configuration information includes at least one following information: network code mode, coding Matrix, coding vector.

Further, described device includes at least one of: described main via node by described network code mode, Described encoder matrix and described coding vector are sent to described auxiliary via node and described destination node, wherein, described net Network coded system, described encoder matrix and described coding vector encode described data for described auxiliary via node, described Network code mode, described encoder matrix and the described coding vector data after described destination node decoding coding； Described network code mode and described coding vector are sent to described auxiliary via node and described mesh by described main via node Node, wherein, described network code mode and described coding vector determine described coding for described auxiliary via node Matrix, described network code mode, described encoder matrix and described coding vector encode institute for described auxiliary via node State data, described network code mode and described coding vector and determine described encoder matrix, institute for described destination node State network code mode, described encoder matrix and the described coding vector data after described destination node decoding coding； Described network code mode is sent to described auxiliary via node and described destination node by described main via node, wherein, Described network code mode determines described encoder matrix and described coding vector for described auxiliary via node and will determine Described encoder matrix and described coding vector are sent to described destination node, described network code mode, described coding square Battle array and described coding vector encode described data, described network code mode, described coding for described auxiliary via node Matrix and described coding vector data after described destination node decoding coding.

Further, described first sending module includes: transmitting element, for the data after coding being sent through antenna To described destination node, wherein, described transmitting element comprises determining that subelement, for determining the network on each antenna Coded system and coding vector；Send subelement, for according to the described network code mode determined and described coding to Amount sends the data after coding on each antenna.

Further, described data are information sequence d=[s₁,s₂,...,s_p], wherein, p≤N and p > 1, front m letter Breath bit is the information bit of the data described to be sent that current time receives, and rear p-m+1 information bit is described Before current time reception and the information bit of data that sent, N is the relaying for sending described data The number of node or the number of the antenna of described via node.

Further, front m the information bit in described information sequence does not carry out network code.

Further, the data after each antenna encoding are: $x_k=d\·g_k=[s_1,s_2,...,s_p]\·\left[\begin{array}{c}{g}_{k1}\\ g_{k2}\\ ...\\ g_{\mathrm{kp}}\end{array}\right],$ Wherein, g_kFor the coding vector on described each antenna.

Further, when using polynary territory network code mode, described main via node structure GF territory (2^mOn) N × N-dimensional Cauchy matrix G, wherein, m is satisfied $2^m\≥\left(\begin{array}{c}{p}^2\\ p-1\end{array}\right)$ Minima；Coding on described each antenna to Amount g_kFor a column vector in Cauchy matrix G.

Further, as antenna total number N=2, use network code mode based on XOR, encoded after Information sequence is X=[x₁,x₂]；Wherein, x₁=s_i, x₂=s_i⊕s_i-1, s_iFor current time receive described in treat Send data, s_i-1For before current time reception and the data that sent；x₁And x₂It is modulated distinguishing afterwards Antenna 1 and antenna 2 send；For multiple single antenna via nodes, x₁And x₂It is modulated distinguishing afterwards Node 1 and node 2 send.

Further, the antenna that in antenna 1 and antenna 2, channel condition is good is selected to send x₁；Or, select node 1 The node good with channel condition in node 2 sends x₁。

Further, when using complex field network code mode, construct complex field network code matrix g_k, wherein, x_k=d g_kWith information sequence [s₁,s₂,...,s_pMap one by one between].

According to a further aspect in the invention, it is provided that a kind of data deciphering device, including: receiver module, it is used for receiving Data after the coding that one or more via nodes send and for decoding the part or all of of the data after described coding Network code configuration information, wherein, described data include the data not received and at the number not received described in reception According to the data the most received；Decoder module, after decoding described coding according to described network code configuration information Data.

Further, described network code configuration information includes at least one following information: network code mode, coding Matrix, coding vector.

Further, described device includes at least one of: receive in the master in the one or more via node Described network code mode, described encoder matrix and the described coding vector that the node that continues sends；Receive one or many The described network code mode of the main via node transmission in individual via node and described coding vector, according to described network Coded system and described coding vector determine described encoder matrix；Receive in the master in the one or more via node The described network code mode that the node that continues sends, receives the auxiliary via node in the one or more via node at root The described encoder matrix sent after determining described encoder matrix and described coding vector according to described network code mode and institute State coding vector.

Further, described decoder module includes: judging unit, and the data received described in judge are the most just Really decoding；First decoding unit, in the case of in the judged result of described judging unit for being, according to described The data not received described in the data received and the decoding of described network code configuration information；Second decoding unit, uses In the case of the judged result at described judging unit is no, according to described network code configuration information decoding described in The data received and the described data not received.

Further, described device also includes: judge module, for judging whether the number after being correctly decoded described coding According to；First preserves module, in the case of the judged result at described judge module is for being, preserves after being correctly decoded Data；Second preserves module, in the case of the judged result of described judge module is no, preserves the most correct The data of decoding, wherein, described incorrectly decoded data are for the data received with the subsequent time of current time Combined decoding.

By the present invention, using and utilize network code configuration information to encode described data, wherein, described data include working as Before the data to be sent of front reception and current time reception and the data that sent；By the number after coding According to being sent to destination node, solve data transmission credibility present in correlation technique low, the problem that time delay is big, carry The high reliability of data transmission, reduces the time delay of data transmission.

Accompanying drawing explanation

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this Bright schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.At accompanying drawing In:

Fig. 1 is the flow chart of data transmission method for uplink according to embodiments of the present invention；

Fig. 2 is the flow chart of data decoding method according to embodiments of the present invention；

Fig. 3 is the structured flowchart of data sending device according to embodiments of the present invention；

Fig. 4 is the structured flowchart of coding module 32 in data sending device according to embodiments of the present invention；

Fig. 5 is the preferred structure block diagram according to dispensing device according to embodiments of the present invention；

Fig. 6 is the structured flowchart of the first sending module 34 in data sending device according to embodiments of the present invention；

Fig. 7 is the structured flowchart of data deciphering device according to embodiments of the present invention；

Fig. 8 is the structured flowchart of decoder module 74 in data deciphering device according to embodiments of the present invention；

Fig. 9 is the preferred structure block diagram of data deciphering device according to embodiments of the present invention；

Figure 10 is the data transmitting scene schematic diagram using network code according to embodiments of the present invention；

Figure 11 is the data transmission method flow chart using network code according to embodiments of the present invention；

Figure 12 is the data transmission device using network coding technique according to embodiments of the present invention；

Figure 13 is the actual application scenarios schematic diagram under super-intensive network scenarios according to embodiments of the present invention；

Figure 14 is the data transmission block diagram using network code according to embodiments of the present invention；

Figure 15 is signaling process figure according to embodiments of the present invention；

Figure 16 is the another kind of data transmission block diagram using network code according to embodiments of the present invention.

Detailed description of the invention

Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments.It should be noted that do not conflicting In the case of, the embodiment in the application and the feature in embodiment can be mutually combined.

Providing a kind of data transmission method for uplink in the present embodiment, Fig. 1 is data receiver according to embodiments of the present invention The flow chart of method, as it is shown in figure 1, this flow process comprises the steps:

Step S102, utilizes network code configuration information coded data, and wherein, these data include what current time received Before data to be sent and current time reception and the data that sent；

Data after coding are sent to destination node by step S104.

By above-mentioned steps, when sending data, first the data sent will be needed to encode, after retransmiting coding Data, improve the reliability of data transmission, and, when carrying out data encoding, not only encode data to be sent, with Time go back the data that coded portion has been transmitted across, it is to avoid the feedback in retransmission processes and waiting process, reduce data and pass Defeated time delay, thus it is low to solve data transmission credibility present in correlation technique, the problem that time delay is big, improves number According to the reliability of transmission, reduce the time delay of data transmission.

When above-mentioned data are encoded, can there is multiple coded system, in an optional embodiment, utilize Network code configuration information coded data includes: the main via node in one or more via nodes determines network code Configuration information, and according to this network code configuration information coded data；And/or, auxiliary in one or more via nodes Via node encodes above-mentioned data, wherein, the part in this network code configuration information according to network code configuration information Receiving from main via node, the another part in network code configuration information is according to receiving from main via node Part be calculated.It is to say, main via node is when being sent to auxiliary via node by network code configuration information, All of network code configuration information can be sent to auxiliary via node, it is also possible to only give auxiliary via node transmitting portion Network code configuration information, then determined other by auxiliary via node according to the subnetwork coded layout information obtained Network code configuration information.Main via node only can be effective to auxiliary via node transmitting portion network code configuration information Reduce transmission signaling, reduce network data transmission pressure.

It is the data after encoding that main via node and/or auxiliary via node are sent to the data of destination node, then, purpose Node is accomplished by the operation of the decoding data to coding, and needs network code configuration information to coordinate when being decoded Decoding, therefore, in an optional embodiment, before the data after coding are sent to destination node, also includes: Main via node and/or auxiliary via node will partly or entirely be sent to destination node in network code configuration information.When Destination node can directly utilize this overall network coded layout information solution yardage after receiving overall network coded layout information According to, after destination node receives subnetwork coded layout information, can be first according to this subnetwork coding obtained Configuration information determines the network code configuration information of remaining part, the most again according to whole network code configuration information solutions Code data.Same, main via node and/or auxiliary via node are to destination node transmitting portion network code configuration information Can effectively reduce transmission signaling.

In an optional embodiment, above-mentioned network code configuration information can include at least one following information: Network code mode, encoder matrix, coding vector.

When sending network code configuration information, can be there to be multiple transmission mode, in an optional embodiment, main Network code mode, encoder matrix and coding vector can be sent to auxiliary via node and destination node by via node, Wherein, this network code mode, encoder matrix and coding vector are used for auxiliary via node coded data, this network code Mode, encoder matrix and the coding vector data after destination node decoding coding；In another optional embodiment In, network code mode and coding vector can be sent to auxiliary via node and destination node by main via node, wherein, This network code mode and coding vector determine encoder matrix for auxiliary via node, this network code mode, coding square Battle array and coding vector are for auxiliary via node coded data, and this network code mode and coding vector can be also used for purpose Node determines encoder matrix, and this network code mode, encoder matrix and coding vector are after destination node decoding coding Data；In another optional embodiment, main via node can with only network code mode is sent to auxiliary in Continue node and destination node, and wherein, this network code mode determines encoder matrix and coding vector for auxiliary via node And the encoder matrix determined and coding vector are sent to destination node, this network code mode, encoder matrix and coding Vector is for auxiliary via node coded data, and this network code mode, encoder matrix and coding vector are additionally operable to purpose joint Data after some decoding coding.

When the data after coding are sent to destination node, the data after coding can be sent by antenna, at one In optional embodiment, the data after coding are sent to destination node through antenna and may include that and determine on each antenna Network code mode and coding vector；On each antenna, coding is sent according to the network code mode determined and coding vector After data.

Wherein, above-mentioned data can be information sequence d=[s₁,s₂,...,s_p], wherein, p≤N and p > 1, front m Information bit is the information bit of the data to be sent that current time receives, when rear p-m+1 information bit is current Before quarter reception and the information bit of data that sent, N is the via node for sending above-mentioned data The number of the antenna of number or via node.

In order to ensure that the data that current time information receives can be received reliably, it is also possible to do not encode above-mentioned front m Each information bit, the data not received current time encode.

After encoding data, the data after coding on each antenna can be: $x_k=d\·g_k=[s_1,s_2,...,s_p]\·\left[\begin{array}{c}{g}_{k1}\\ g_{k2}\\ ...\\ g_{\mathrm{kp}}\end{array}\right],$ Wherein, g_kFor the coding vector on each antenna.

In an optional embodiment, when using polynary territory network code mode, this main via node structure GF Territory (2^m) upper N × N-dimensional Cauchy matrix G, wherein, m is satisfied $2^m\≥\left(\begin{array}{c}{p}^2\\ p-1\end{array}\right)$ Minima；Volume on each antenna Code vector g_kFor a column vector in Cauchy matrix G.

In an optional embodiment, as antenna total number N=2, network code side based on XOR can be used Formula, encoded after information sequence be X=[x₁,x₂]；Wherein, x₁=s_i, x₂=s_i⊕s_i-1, s_iFor time current Carve the data to be sent received, s_i-1For before current time reception and the data that sent；x₁And x₂Carry out Send on antenna 1 and antenna 2 respectively after modulation；For multiple single antenna via nodes, x₁And x₂Carry out Send on node 1 and node 2 respectively after modulation.

In order to ensure that the data to be sent that current time receives can be sent to destination node, the sky that channel is good can be selected Line or node are transmitted, i.e. the antenna that in antenna 1 and antenna 2, channel condition is good can be selected to send x₁；Or, The node that in node 1 and node 2, channel condition is good is selected to send x₁。

In an optional embodiment, when using complex field network code mode, construct complex field network code square Battle array g_k, wherein, x_k=d g_kWith information sequence [s₁,s₂,...,s_pMap one by one between].It should be noted that except upper Stating outside the coding mentioned in embodiment, other the coded system being capable of data encoding is also to can apply to this In bright.

Fig. 2 is the flow chart of data decoding method according to embodiments of the present invention, as in figure 2 it is shown, this flow process include as Lower step:

Step S202, receives the data after the coding that one or more via node sends and the number after decoding coding According to part or all of network code configuration information, wherein, these data include the data not received and are not connecing The data received before the data received；

Step S204, according to the data after network code configuration information decoding coding.

By above-mentioned steps, the data of reception be encoded after data can be effectively improved data transmission reliability, Ensure the safety of data transmission, and, in the data of reception, not only include the data not received, the most also wrap Include the data that received of part, it is to avoid the feedback in retransmission processes and waiting process, reduce data transmission delay, Thus it is low to solve data transmission credibility present in correlation technique, the problem that time delay is big, improve data transmission Reliability, reduces the time delay of data transmission.

In an optional embodiment, above-mentioned network code configuration information includes at least one following information: network Coded system, encoder matrix, coding vector.

From the above embodiments, when receiving network code configuration information, one or more relaying joint can be received The part or all of network code configuration information that point sends, in an optional embodiment, can receive one or many Network code mode, encoder matrix and the coding vector that main via node in individual via node sends；Can also receive The network code mode of the main via node transmission in one or more via nodes and coding vector, according to network code Mode and coding vector determine encoder matrix；The main via node in one or more via node can also be received send Network code mode, the auxiliary via node received in one or more via node is determining according to network code mode The encoder matrix sent after encoder matrix and coding vector and coding vector.Above-mentioned network code is received with destination node As a example by configuration information, destination node can receive the overall network coding of main via node and/or the transmission of auxiliary via node and join Confidence ceases, it is also possible to only receive the subnetwork coded layout information that main via node sends, then by oneself according to reception Subnetwork coded layout information determine the network code configuration information of additionally part.Certainly, network code is determined The mode of configuration information also for planting, can be derived by formula, it is also possible to determine by other means.

In an optional embodiment, include according to the data after network code configuration information decoding coding: judged The data received whether correct decoding；In the case of judged result is for being, according to the data received and network Coded layout information decodes the data not received；In the case of judged result is no, according to network code configuration letter Breath decodes the data received and the data not received.By utilizing the data originally received to decode not The data received, can improve deciphering speed and accuracy rate.

In an optional embodiment, after according to the data after network code configuration information decoding coding, also wrap Include: judge whether the data after being correctly decoded coding；In the case of judged result is for being, preserve after being correctly decoded Data；In the case of judged result is no, preserve incorrectly decoded data, wherein, this incorrectly decoded number According to the data aggregate decoding for receiving with the subsequent time of current time.

Additionally providing a kind of device in the present embodiment, this device is used for realizing above-described embodiment and the side of being preferable to carry out Formula, had carried out repeating no more of explanation.As used below, term " module " can realize predetermined function Software and/or the combination of hardware.Although the device described by following example preferably realizes with software, but firmly Part, or the realization of the combination of software and hardware also may and be contemplated.

Fig. 3 is the structured flowchart of data sending device according to embodiments of the present invention, as it is shown on figure 3, this device includes Coding module 32 and the first sending module 34, illustrate this device below.

Coding module 32, is used for utilizing network code configuration information coded data, and wherein, these data include current time Before the data to be sent received and current time reception and the data that sent；First sending module 34, even It is connected to above-mentioned coding module 32, for the data after coding are sent to destination node.

Fig. 4 is the structured flowchart of coding module 32 in data sending device according to embodiments of the present invention, as shown in Figure 4, This coding module 32 includes the first coding unit 42 and/or the second coding unit 44, enters this coding module 32 below Row explanation.

First coding unit 42, the main via node in one or more via nodes determines network code configuration letter Breath, and according to network code configuration information coded data；Second coding unit 44, for one or more via nodes In auxiliary via node according to network code configuration information coded data, wherein, the portion in this network code configuration information Dividing and receive from main via node, the another part in network code configuration information is according to receiving from main via node To part be calculated.

Fig. 5 is the preferred structure block diagram according to dispensing device according to embodiments of the present invention, as it is shown in figure 5, this device removes Outside including all modules shown in Fig. 3, also include: the second sending module 52, below this device is illustrated.

Second sending module 52, is connected to above-mentioned first sending module 34, saves for main via node and/or auxiliary relaying Point will partly or entirely be sent to destination node in network code configuration information.

In an optional embodiment, above-mentioned network code configuration information can include at least one following information: net Network coded system, encoder matrix, coding vector.

Wherein, network code mode, encoder matrix and coding vector are sent to auxiliary via node and mesh by main via node Node, wherein, this network code mode, encoder matrix and coding vector be used for auxiliary via node coded data, should Network code mode, encoder matrix and the coding vector data after destination node decoding coding；Main via node will Network code mode and coding vector are sent to auxiliary via node and destination node, wherein, this network code mode and volume Code vector determines encoder matrix for auxiliary via node, and this network code mode, encoder matrix and coding vector are for auxiliary Via node coded data, this network code mode and coding vector determine encoder matrix for destination node, this network Coded system, encoder matrix and the coding vector data after destination node decoding coding；Main via node is by network Coded system is sent to auxiliary via node and destination node, and wherein, this network code mode determines for auxiliary via node The encoder matrix determined and coding vector are also sent to destination node by encoder matrix and coding vector, this network code side Formula, encoder matrix and coding vector are used for auxiliary via node coded data, this network code mode, encoder matrix and volume Code vector data after destination node decoding coding.

Fig. 6 is the structured flowchart of the first sending module 34 in data sending device according to embodiments of the present invention, such as Fig. 6 Shown in, this first sending module 34 includes transmitting element 62, and this transmitting element 62 includes determining subelement 622 and sending out Send subelement 624, below this first sending module 34 is illustrated.

Determine subelement 622, for determining the network code mode on each antenna and coding vector；Send subelement 624, It is connected to above-mentioned determine subelement 622, for sending out on each antenna according to the network code mode determined and coding vector Send the data after coding.

In an optional embodiment, above-mentioned data can be information sequence d=[s₁,s₂,...,s_p], wherein, p≤N And p > 1, front m information bit is the information bit of the data to be sent that current time receives, rear p-m+1 letter Breath bit be before current time reception and the information bit of data that sent, N is for being used for sending above-mentioned number According to the number of via node or the number of antenna of via node.

When data are encoded, can a coded portion data, in an optional embodiment, above-mentioned information Front m information bit in sequence does not carry out network code.

Wherein, the data after each antenna encoding are: $x_k=d\·g_k=[s_1,s_2,...,s_p]\·\left[\begin{array}{c}{g}_{k1}\\ g_{k2}\\ ...\\ g_{\mathrm{kp}}\end{array}\right],$ Wherein, g_kFor the coding vector on each antenna.

Wherein, when using polynary territory network code mode, this main via node structure GF territory (2^m) upper N × N-dimensional Cauchy matrix G, wherein, m is satisfied $2^m\≥\left(\begin{array}{c}{p}^2\\ p-1\end{array}\right)$ Minima；Coding vector g on each antenna_kFor Cauchy's square A column vector in battle array G.

As antenna total number N=2, use network code mode based on XOR, encoded after information sequence be X=[x₁,x₂]；Wherein, x₁=s_i, x₂=s_i⊕s_i-1, s_iThe data to be sent received for current time, s_i-1For Before current time reception and the data that sent；x₁And x₂Respectively at antenna 1 and antenna after being modulated Send on 2；For multiple single antenna via nodes, x₁And x₂Respectively at node 1 and node after being modulated Send on 2.

In an optional embodiment, the antenna that in antenna 1 and antenna 2, channel condition is good can be selected to send x₁； Or, select the node that in node 1 and node 2, channel condition is good to send x₁。

When using complex field network code mode, construct complex field network code matrix g_k, wherein, x_k=d g_kWith Information sequence [s₁,s₂,...,s_pMap one by one between].

Fig. 7 is the structured flowchart of data deciphering device according to embodiments of the present invention, as it is shown in fig. 7, this device includes Receiver module 72 and decoder module 74, illustrate this device below.

Receiver module 72, is used for the data after receiving the coding that one or more via node sends and for decoding this volume The part or all of network code configuration information of the data after Ma, wherein, data include the data not received and are connecing Receive the data received before these data not received；Decoder module 74, is connected to above-mentioned receiver module 72, uses According to the data after network code configuration information decoding coding.

Wherein, above-mentioned network code configuration information can include at least one following information: network code mode, volume Code matrix, coding vector.

In an optional embodiment, said apparatus can include at least one of: receives one or more relaying Network code mode, encoder matrix and the coding vector that main via node in node sends；Receive one or more in Network code mode that the main via node in node of continuing sends and coding vector, according to network code mode and coding to Amount determines encoder matrix；Receive the network code mode that the main via node in one or more via node sends, connect Receive auxiliary via node in one or more via node according to network code mode determine encoder matrix and coding to The encoder matrix sent after amount and coding vector.

Fig. 8 is the structured flowchart of decoder module 74 in data deciphering device according to embodiments of the present invention, as shown in Figure 8, This decoder module 74 includes judging unit the 82, first decoding unit 84 and the second decoding unit 86, below to this decoding Module 74 illustrates.

Judging unit 82, for judging the data that received whether correct decoding；First decoding unit 84, is connected to Above-mentioned judging unit 82, in the case of the judged result at judging unit 82 is for being, according to the number received The data not received are decoded according to network code configuration information；Second decoding unit 86, is connected to above-mentioned judging unit 82, in the case of the judged result of judging unit is no, received according to the decoding of network code configuration information Data and the data that do not received.

Fig. 9 is the preferred structure block diagram of data deciphering device according to embodiments of the present invention, as it is shown in figure 9, this device In addition to including all modules shown in Fig. 7, also include that judge module 92, first preserves module 94 and second and preserves mould Block 96.Below this device is illustrated.

Judge module 92, is connected to above-mentioned decoder module 74, for judging whether the data after being correctly decoded coding；The One preserves module 94, is connected to above-mentioned judge module 92, for the situation being yes in the judged result of judge module 92 Under, preserve the data after being correctly decoded；Second preserves module 96, is connected to above-mentioned judge module 92, for judging The judged result of module 92 be no in the case of, preserve incorrectly decoded data, wherein, this incorrectly decoded number According to the data aggregate decoding for receiving with the subsequent time of current time.

Below in conjunction with specific embodiment, the present invention will be described.

The use data transmission method of network coding technique and device provided in the present embodiment include herein below:

Figure 10 is the data transmitting scene schematic diagram using network code according to embodiments of the present invention, and Figure 11 is basis The data transmission method flow chart using network code of the embodiment of the present invention, the method is applied to the scene shown in Figure 10 In, as shown in figure 11, the method comprises the steps:

Step S1102, starts；

Data (being referred to as original information sequence) are passed to one by step S1104, subscriber equipment or source node Or multiple via node；The transmitting antenna total number remembering all via nodes is N, penetrates antenna relay node for single-shot, The i.e. number of via node is N；Here N >=2 must be met；In all via nodes, it is responsible for determining that participation network is compiled The node of code information sequence and network code configuration information is designated as main via node；Here networking coded layout information bag Include but be not limited to network code mode, encoder matrix, the coding vector of each node.

Step S1106, via node receives from subscriber equipment or the data of source node；Note current time packet Information is S_i, it is S that previous moment receives and have transmitted to the packet information of destination node_i-1；Main via node is true Surely the information sequence d=[s of network code is participated in₁,s₂,...,s_p], need exist for meeting p≤N and p 1；The most front m The individual information bit received for current time, rear p-m+1 is individual to be received for previous moment and has transmitted to destination node Information bit；

Step S1108, via node uses centralized or distributed mode to determine the network code on each transmitting antenna Mode and coding vector；

Step S1110, trunk node selection current time receives information and previous moment receives information and carries out network code, Remember that the coding vector on each transmitting antenna is g_k, k=1,2 ..., N；After encoded, on each antenna, armed information is divided It is not

$x_k=d\·g_k=[s_1,s_2,...,s_p]\·\left[\begin{array}{c}{g}_{k1}\\ g_{k2}\\ ...\\ g_{\mathrm{kp}}\end{array}\right];$

Step S1112, after using corresponding coded system and coding vector to encode information sequence d, from each Send on antenna；

Optionally, polynary territory network code mode, main via node structure GF territory (2 are used^m) upper N × N

Dimension Cauchy matrix G, wherein, m is satisfied $2^m\≥\left(\begin{array}{c}{p}^2\\ p-1\end{array}\right)$ Minima；Coding vector on each antenna

g_kFor a column vector in Cauchy matrix G；

Optionally, for ensureing the reliability that current time information receives, for k=1,2 ... m, x_k=s_k, i.e. front m Information bit does not carry out network code；

Optionally, as N=2, use network code mode based on XOR, encoded after information bit be X=[x₁,x₂], x here₁=s_i, x₂=s_i⊕s_i-1；x₁And x₂Respectively at antenna 1 and antenna 2 after being modulated On send；For multiple single antenna via nodes, x₁And x₂Send on node 1 and node 2 respectively；Preferably , select antenna or the information i.e. x of node transmission current time that channel condition is good₁；

Optionally, use complex field network code mode, construct complex field network code matrix g_kSo that x_k=d g_k With ordered pair [s₁,s₂,...,s_pCan map one by one between]；

Under centralized fashion, main via node determines the coding vector on each via node, and by relevant information with signaling Mode be sent to the node that this antenna is corresponding, transmit these information to destination node, to help destination node simultaneously Decode；

Optionally, in order to reduce transmission signaling, main via node can only send network code configuration information, as network is compiled Code matrix construction information, coding vector numbering etc.；Each via node and destination node are permissible according to the configuration information received Recover required encoder matrix information；

Under distributed way, main via node only determines subnetwork coded layout information, such as network code mode etc., And this configuration information is sent to each via node and destination node；Concrete coding vector is independent really by each via node Fixed, and coding information is sent collectively to destination node as packet header along with data, packet header is first translated by destination node Code, it is thus achieved that carry out the decoding of data after network code matrix information again；

Optionally, x_kMultiple antennas or multiple node use MIMO or the mode of virtual MIMO further It is transmitted, such as STBC/SFBC etc.；

Step S1114, destination node reception current time is from each antenna or the data of each via node, and combines Previous moment has been received the historical data obtained, carries out joint decoding and obtains information and the previous moment of current time Information；

Wherein, if the information correct decoding of previous moment, then decoding during using the information of previous moment as known Information assists the decoding of current time information；

If the information of previous moment does not has correct decoding, then by information and the current time of previous moment during decoding Information together as information to be decoded, and the information received combining previous moment carries out joint decoding；

If the information of current time is correctly decoded, then preserve the decoding of auxiliary subsequent time information as Given information；

If the information of current time is not correctly decoded, then preserve the reception signal of current time, and and subsequent time Information carries out joint decoding together；

Step S1116, terminates.

Figure 12 is the data transmission device using network coding technique according to embodiments of the present invention, such as Figure 12, this dress Put and include with lower module:

Information receiving module 122, is positioned at via node, receives the information (such as, data) from source node；

Network code module 124 (with above-mentioned coding module 32 and the second sending module 52), this module is positioned at relaying Node, the most main via node determines network code and coding vector, and network code configuration information is sent to it His via node (e.g., auxiliary via node) and destination node；The source node identification received employing coding vector is entered Row coding；

Multiple-input, multiple-output MIMO module 126 and decoding module 128 (decoder module 74 with above-mentioned), this decoding module 128 are positioned at destination node, decode the data received, recover raw information.

Enforcement to technical scheme is described in further detail below in conjunction with the accompanying drawings:

In UDN scene, the virtual subdistrict of UE is made up of multiple TP, and one of them is Master TP, is responsible for control Surface function processed, other for the data transmission that cooperated together with Slave TP, Master TP and Slave TP, such as figure Shown in 13, Figure 13 is the actual application scenarios schematic diagram under super-intensive network scenarios according to embodiments of the present invention.

For the virtual subdistrict being made up of 2 transmission nodes, as shown in figure 14, Figure 14 is according to embodiments of the present invention Use network code data transmission block diagram.The letter from UE is received at moment i, Master TP and Slave TP Breath s_i, and combine information s of the upper moment i-1 being saved in each caching_i-1Carry out network code.Use based on different Or network coding scheme, encoded after information sequence be X=[x₁,x₂], x here₁=s_i, x₂=s_i⊕s_i-1； x₁And x₂The transmission symbol C in the i-th moment is obtained after constellation mapping_i, equally, obtain the transmission in i+1 moment Symbol is C_i+1.Afterwards, Space-Time Block Coding (Space Time Block Cod, referred to as STBC) is used just to carry out Handing over and send, time empty, sending metrix is $\left[\begin{array}{c}{C}_i-C_{i+1}^{*}\\ C_{i+1}{C}_i^{*}\end{array}\right];$ The signal in two moment is carried out by the destination node as receiving terminal Decoding, then decodes by maximum-likelihood criterion, then carries out the decoding of network code, recover raw information s_i-1, s_iAnd s_i+1.If at i-2 and i-1 moment, s_i-1Correct decoding, then at i and i+1 moment, s_i-1Join as Given information With decoding, for s_iAnd s_i+1Higher diversity gain can be obtained；If at i-2 and i-1 moment, s_i-1There is no correct decoding, Then in i and the i+1 moment as unknown message, be combined in i-2 with i-1 reception to signal together with combine Decoding, increases s_i-1Decoding accuracy；If at i and i+1 moment, s_iAnd s_i+1There is no correct decoding, then preserve current Information, at i+2 and i+3 moment joint decoding together with the signal received.

In above process, before data is transmitted, the Slave TP number that Master TP transmits according to participation data, Determine network code mode and coding vector, and send relevant information to Slave TP and receive base station, side.Slave TP Network code configuration information according to receiving performs the encoding operation；Receiving side, base station is according to the coding configuration letter received Breath is decoded operation, as shown in figure 15.Figure 15 is signaling process figure according to embodiments of the present invention, such as Figure 15 Shown in, comprise the steps:

Step S1502, Master TP receives the metrical information that Slave TP sends；

Step S1504, Master TP determines network code configuration information；

Step S1506, the network code configuration information determined is sent to Slave TP and destination node by Master TP；

Step S1508, Master TP receives data, and Slave TP receives data；

Step S1510, Master TP encodes the data received, and passes through according to the network code configuration information determined Data after coding are sent to destination node by the mode of MIMO；Slave TP is according to the network code configuration letter determined The data that breath coding receives, and by the way of MIMO, the data after coding are sent to destination node；

Step S1512, destination node decodes the data encoded received according to the network code configuration information determined.

For the virtual subdistrict being made up of four transmission nodes, as shown in figure 16, Figure 16 is according to embodiments of the present invention The another kind of data transmission block diagram using network code.Receive from UE at moment i, Master TP and Slave TP Information s1_iAnd s2_i, and combine information s1 of the upper moment i-1 being saved in each caching_i-1And s2_i-1Carry out network Coding.Use polynary territory network coding scheme, the Slave TP number 4 that Master TP transmits according to participation data, with And the information bit 4 of participation network code, determine that needs are at GF (2⁴Encode on), construct GF (2⁴) upper 4x4 For Cauchy matrix $G=\left[\begin{array}{cccc}{g}_{11}& g_{12}& g_{13}& g_{14}\\ g_{21}& g_{22}& g_{23}& g_{24}\\ g_{31}& g_{22}& g_{23}& g_{24}\\ g_{41}& g_{42}& g_{43}& g_{44}\end{array}\right].$ In Cauchy matrix, any one column vector all with other linear independences.

Master TP is that each Slave TP chooses corresponding column vector in Cauchy matrix, and by Cauchy matrix configuration information with And each corresponding for Slave TP column vector index is sent to Slave TP and target BS；Master TP and Slave TP Perform the encoding operation according to corresponding network code vector, encoded after information be $x_k=\left[\begin{array}{cccc}{s1}_i& {s2}_i& {s1}_{i-1}& {s2}_{i-1}\end{array}\right]\·\left[\begin{array}{c}{g}_{k1}\\ g_{k2}\\ g_{k3}\\ g_{k4}\end{array}\right],k=\mathrm{1,2,3,4};$

X after encoded_kInformation generates through ovennodulation and symbol again, sends from different nodes.Connecing Receiving side, destination node is according to current time information, in conjunction with the decoding of the historical data row network code that previous moment receives, Recover raw information s1_i, s2_i, and s1_i-1And s2_i-1.If at i-1 moment, s1_i-1And s2_i-1Correct decoding, then At i moment, s1_i-1And s2_i-1Decoding is participated in, for s1 as Given information_iAnd s2_iHigher diversity gain can be obtained； If at i-1 moment, s1_i-1And s2_i-1There is no correct decoding, then in the i moment as unknown message, when being combined in i-1 Carve the signal received and carry out joint decoding together, increase s1_i-1And s2_i-1Decoding accuracy；If at i moment, s1_i-1 And s2_i-1There is no correct decoding, then preserve current information, at i+1 moment joint decoding together with the signal received.

In another embodiment, receive information s1 from UE at moment i, Master TP and Slave TP_iAnd s2_i, And combine information s1 of the upper moment i-1 being saved in each caching_i-1And s2_i-1Carry out network code.Use polynary territory Network coding scheme, Master TP is according to participating in the Slave TP number 4 that data are transmitted, and participates in network code Information bit 4, determines that needs are at GF (2⁴Encode on), construct GF (2⁴On), 4x4 is Cauchy matrix $G=\left[\begin{array}{cccc}{g}_{11}& g_{12}& g_{13}& g_{14}\\ g_{21}& g_{22}& g_{23}& g_{24}\\ g_{31}& g_{22}& g_{23}& g_{24}\\ g_{41}& g_{42}& g_{43}& g_{44}\end{array}\right].$ In Cauchy matrix, any one column vector all with other linear independences.

Master TP determines preferable two node-node transmission current time information s1 of channel condition in all nodes_iAnd s2_i, From G, randomly select string as its coding vector for remaining two nodes simultaneously, and by network code mode, Ke The column vector numbering of western matrix configuration information and correspondence is sent to Slave node and target BS；Slave node receives Recover corresponding coding vector after network code configuration information, encoded after information be:

x₁=s1_i；x₂=s2_i；

$x_k=\left[\begin{array}{cccc}{s1}_i& {s2}_i& {s1}_{i-1}& {s2}_{i-1}\end{array}\right]\·\left[\begin{array}{c}{g}_{k1}\\ g_{k2}\\ g_{k3}\\ g_{k4}\end{array}\right],k=\mathrm{3,4};$

X after encoded_kInformation generates through ovennodulation and symbol again, sends from different nodes.Connecing Receiving side, destination node is according to current time information, in conjunction with the decoding of the historical data row network code that previous moment receives, Recover raw information s1_i, s2_i, and s1_i-1And s2_i-1.If at i-1 moment, s1_i-1And s2_i-1Correct decoding, then At i moment, s1_i-1And s2_i-1Decoding is participated in, for s1 as Given information_iAnd s2_iHigher diversity gain can be obtained； If at i-1 moment, s1_i-1And s2_i-1There is no correct decoding, then in the i moment as unknown message, when being combined in i-1 Carve the signal received and carry out joint decoding together, increase s1_i-1And s2_i-1Decoding accuracy；If at i moment, s1_i-1 And s2_i-1There is no correct decoding, then preserve current information, at i+1 moment joint decoding together with the signal received.

In another embodiment, receive information s1 from UE at moment i, Master TP and Slave TP_iAnd s2_i, And combine information s1 of the upper moment i-1 being saved in each caching_i-1And s2_i-1Carry out network code.Master TP Determine employing complex field network code mode, the design in selection multi-input multi-output system linear constellation precoding:

$g_k=\left[\begin{array}{c}{g}_{k1}\\ g_{k2}\\ ...\\ g_{\mathrm{kp}}\end{array}\right]$ Wherein, g_kp=e^{jπ(4p-1)/(k-1)/2N}；

Complex field network code matrix construction information is sent to each Slave TP and target BS by Master TP；Slave After TP receives configuration information, go out complete coding vector g according to network code mode and network code configuration information recovery_k, And perform the encoding operation, encoded after information be:

$x_k=\left[\begin{array}{cccc}{s1}_i& {s2}_i& {s1}_{i-1}& {s2}_{i-1}\end{array}\right]\·\left[\begin{array}{c}{g}_{k1}\\ g_{k2}\\ g_{k3}\\ g_{k4}\end{array}\right],k=\mathrm{1,2,3,4};$

Subsequent step is identical with embodiment above.

Compared with correlation technique, use the method and apparatus provided in the above embodiment of the present invention, by current time information On different antennas or different network nodes, carry out network code with historical information, during decoding, use it Before the historical information of correct decoding, obvious diversity gain can be obtained for current time information；Or utilize it Before the data message that receives, carry out joint decoding, the historical information before simultaneously recovering in conjunction with currently received information With current time information, it is to avoid the feedback in retransmission processes and waiting process, reduce data transmission delay, improve nothing While data transmission efficiency in line multihop network, it is ensured that the reliability of data transmission.

Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general Calculating device realize, they can concentrate on single calculating device, or is distributed in multiple calculating device institute On the network of composition, alternatively, they can realize with calculating the executable program code of device, it is thus possible to It is stored in storing in device and is performed by calculating device, and in some cases, can be to be different from herein Order perform shown or described by step, or they are fabricated to respectively each integrated circuit modules, or will Multiple modules or step in them are fabricated to single integrated circuit module and realize.So, the present invention is not restricted to appoint What specific hardware and software combines.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made Any modification, equivalent substitution and improvement etc., should be included within the scope of the present invention.

Claims (36)

1. a data transmission method for uplink, it is characterised in that including:

Utilizing network code configuration information to encode described data, wherein, described data include what current time received Before data to be sent and current time reception and the data that sent；

Data after coding are sent to destination node.

Method the most according to claim 1, it is characterised in that utilize network code configuration information to encode described data Including:

Main via node in one or more via nodes determines described network code configuration information, and according to institute State network code configuration information and encode described data；And/or,

Auxiliary via node in the one or more via node encodes institute according to described network code configuration information Stating data, wherein, the part in described network code configuration information receives from described main via node, institute Stating the another part in network code configuration information is to calculate according to the part received from described main via node Arrive.

Method the most according to claim 2, it is characterised in that the data after coding are sent to described destination node Before, also include:

Described main via node and/or described auxiliary via node by the part in described network code configuration information or All it is sent to described destination node.

The most according to the method in any one of claims 1 to 3, it is characterised in that described network code configuration information Including at least one following information:

Network code mode, encoder matrix, coding vector.

Method the most according to claim 4, it is characterised in that include at least one of:

Described network code mode, described encoder matrix and described coding vector are sent to by described main via node Described auxiliary via node and described destination node, wherein, described network code mode, described encoder matrix and institute State coding vector and encode described data, described network code mode, described coding square for described auxiliary via node Battle array and described coding vector data after described destination node decoding coding；

Described network code mode and described coding vector are sent to described auxiliary via node by described main via node With described destination node, wherein, described network code mode and described coding vector are for described auxiliary via node Determining described encoder matrix, described network code mode, described encoder matrix and described coding vector are for described Auxiliary via node encodes described data, described network code mode and described coding vector for described destination node Determining described encoder matrix, described network code mode, described encoder matrix and described coding vector are for described Data after destination node decoding coding；

Described network code mode is sent to described auxiliary via node and described destination node by described main via node, Wherein, described network code mode determines described encoder matrix and described coding vector for described auxiliary via node And the described encoder matrix determined and described coding vector are sent to described destination node, described network code side Formula, described encoder matrix and described coding vector encode described data, described network for described auxiliary via node Coded system, described encoder matrix and the described coding vector data after described destination node decoding coding.

Method the most according to claim 4, it is characterised in that the data after coding are sent to described mesh through antenna Node, including:

Determine the network code mode on each antenna and coding vector；

On each antenna, the data after coding are sent according to the described network code mode determined and described coding vector.

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

Described data are information sequence d=[s₁,s₂,...,s_p], wherein, p≤N and p > 1, front m information bit For the information bit of the data described to be sent that current time receives, rear p-m+1 information bit is described working as Before the front moment reception and the information bit of data that sent, N is for sending in described data Continue the number of antenna of the number of node or described via node.

Method the most according to claim 7, it is characterised in that:

Front m information bit in described information sequence does not carry out network code.

Method the most according to claim 7, it is characterised in that:

The data after coding on each antenna are:

$x_k=d\·g_k=[s_1,s_2,...,s_p]\·\left[\begin{array}{c}{g}_{k1}\\ g_{k2}\\ ...\\ g_{\mathrm{kp}}\end{array}\right],$ Wherein, g_kFor the volume on described each antenna Code vector.

Method the most according to claim 9, it is characterised in that:

When using polynary territory network code mode, described main via node structure GF territory (2^m) upper N × N-dimensional Cauchy matrix G, wherein, m is satisfied $2^m\≥\left(\begin{array}{c}{p}^2\\ p-1\end{array}\right)$ Minima；Coding vector g on described each antenna_k For a column vector in Cauchy matrix G.

11. methods according to claim 7, it is characterised in that:

As antenna total number N=2, use network code mode based on XOR, encoded after information Sequence is X=[x₁,x₂]；

Wherein, x₁=s_i, x₂=s_i⊕s_i-1, s_iThe data described to be sent received for current time, s_i-1For Before current time reception and the data that sent；x₁And x₂Respectively antenna 1 He after being modulated Send on antenna 2；For multiple single antenna via nodes, x₁And x₂Respectively at node after being modulated 1 and node 2 on send.

12. methods according to claim 11, it is characterised in that:

The antenna that in antenna 1 and antenna 2, channel condition is good is selected to send x₁；Or,

The node that in node 1 and node 2, channel condition is good is selected to send x₁。

13. methods according to claim 9, it is characterised in that:

When using complex field network code mode, construct complex field network code matrix g_k, wherein, x_k=d g_kWith information sequence [s₁,s₂,...,s_pMap one by one between].

14. 1 kinds of data decoding methods, it is characterised in that including:

Receive the data after the coding that one or more via node sends and the data after decoding described coding Part or all of network code configuration information, wherein, described data include the data that do not received and are receiving The data received before the described data not received；

The data after described coding are decoded according to described network code configuration information.

15. methods according to claim 14, it is characterised in that described network code configuration information includes following information At least one:

Network code mode, encoder matrix, coding vector.

16. methods according to claim 15, it is characterised in that include at least one of:

Receive described network code mode, institute that the main via node in the one or more via node sends State encoder matrix and described coding vector；

Receive described network code mode and institute that the main via node in the one or more via node sends State coding vector, determine described encoder matrix according to described network code mode and described coding vector；

Receive the described network code mode that the main via node in the one or more via node sends, connect Receive auxiliary via node in the one or more via node determine according to described network code mode described The described encoder matrix sent after encoder matrix and described coding vector and described coding vector.

17. methods according to claim 14, it is characterised in that according to the decoding of described network code configuration information Data after coding include:

The data received described in judgement whether correct decoding；

In the case of judged result is for being, configure letter according to the described data received and described network code The data not received described in breath decoding；

In the case of judged result is no, received according to the decoding of described network code configuration information Data and the described data not received.

18. methods according to claim 14, it is characterised in that decoding institute according to described network code configuration information After stating the data after coding, also include:

Judge whether the data after being correctly decoded described coding；

In the case of judged result is for being, preserve the data after being correctly decoded；

In the case of judged result is no, preserve incorrectly decoded data, wherein, described incorrectly decoded Data for the data aggregate decoding received with the subsequent time of current time.

19. 1 kinds of data sending devices, it is characterised in that including:

Coding module, is used for utilizing network code configuration information to encode described data, and wherein, described data include Before data to be sent that current time receives and current time reception and the data that sent；

First sending module, for being sent to destination node by the data after coding.

20. devices according to claim 19, it is characterised in that described coding module includes:

First coding unit, the main via node in one or more via nodes determines described network code Configuration information, and encode described data according to described network code configuration information；And/or,

Second coding unit, the auxiliary via node in the one or more via node is according to described network Coded layout information encodes described data, and wherein, the part in described network code configuration information is from described master Via node receives, and the another part in described network code configuration information is according to from described main via node The part received is calculated.

21. devices according to claim 20, it is characterised in that also include:

Second sending module, joins described network code for described main via node and/or described auxiliary via node Confidence breath in be partly or entirely sent to described destination node.

22. according to the device according to any one of claim 19 to 21, it is characterised in that described network code configuration letter Cease and include at least one following information:

Network code mode, encoder matrix, coding vector.

23. according to device described in claim 22, it is characterised in that include at least one of:

Described network code mode, described encoder matrix and described coding vector are sent to by described main via node Described auxiliary via node and described destination node, wherein, described network code mode, described encoder matrix and institute State coding vector and encode described data, described network code mode, described coding square for described auxiliary via node Battle array and described coding vector data after described destination node decoding coding；

Described network code mode and described coding vector are sent to described auxiliary via node by described main via node With described destination node, wherein, described network code mode and described coding vector are for described auxiliary via node Determining described encoder matrix, described network code mode, described encoder matrix and described coding vector are for described Auxiliary via node encodes described data, described network code mode and described coding vector for described destination node Determining described encoder matrix, described network code mode, described encoder matrix and described coding vector are for described Data after destination node decoding coding；

Described network code mode is sent to described auxiliary via node and described destination node by described main via node, Wherein, described network code mode determines described encoder matrix and described coding vector for described auxiliary via node And the described encoder matrix determined and described coding vector are sent to described destination node, described network code side Formula, described encoder matrix and described coding vector encode described data, described network for described auxiliary via node Coded system, described encoder matrix and the described coding vector data after described destination node decoding coding.

24. devices according to claim 22, it is characterised in that described first sending module includes: transmitting element, For the data after coding are sent to described destination node through antenna, wherein, described transmitting element includes:

Determine subelement, for determining the network code mode on each antenna and coding vector；

Send subelement, for according to the described network code mode determined and described coding vector at each antenna Send the data after coding.

25. devices according to claim 24, it is characterised in that:

Described data are information sequence d=[s₁,s₂,...,s_p], wherein, p≤N and p > 1, front m information bit For the information bit of the data described to be sent that current time receives, rear p-m+1 information bit is described working as Before the front moment reception and the information bit of data that sent, N is for sending in described data Continue the number of antenna of the number of node or described via node.

26. devices according to claim 25, it is characterised in that:

Front m information bit in described information sequence does not carry out network code.

27. devices according to claim 25, it is characterised in that:

On each antenna, the data after coding are:

$x_k=d\·g_k=[s_1,s_2,...,s_p]\·\left[\begin{array}{c}{g}_{k1}\\ g_{k2}\\ ...\\ g_{\mathrm{kp}}\end{array}\right],$ Wherein, g_kFor the volume on described each antenna Code vector.

28. devices according to claim 27, it is characterised in that:

When using polynary territory network code mode, described main via node structure GF territory (2^m) upper N × N-dimensional Cauchy matrix G, wherein, m is satisfied $2^m\≥\left(\begin{array}{c}{p}^2\\ p-1\end{array}\right)$ Minima；Coding vector g on described each antenna_k For a column vector in Cauchy matrix G.

29. devices according to claim 25, it is characterised in that:

As antenna total number N=2, use network code mode based on XOR, encoded after information Sequence is X=[x₁,x₂]；

Wherein, x₁=s_i, x₂=s_i⊕s_i-1, s_iThe data described to be sent received for current time, s_i-1For Before current time reception and the data that sent；x₁And x₂Respectively antenna 1 He after being modulated Send on antenna 2；For multiple single antenna via nodes, x₁And x₂Respectively at node after being modulated 1 and node 2 on send.

30. devices according to claim 29, it is characterised in that:

The antenna that in antenna 1 and antenna 2, channel condition is good is selected to send x₁；Or,

The node that in node 1 and node 2, channel condition is good is selected to send x₁。

31. devices according to claim 27, it is characterised in that:

When using complex field network code mode, construct complex field network code matrix g_k, wherein, x_k=d g_kWith information sequence [s₁,s₂,...,s_pMap one by one between].

32. 1 kinds of data deciphering devices, it is characterised in that including:

Receiver module, is used for the data after receiving the coding that one or more via node sends and for decoding Stating the part or all of network code configuration information of the data after coding, wherein, described data include not receiving Data and the data that received before the data that do not received described in receiving；

Decoder module, for decoding the data after described coding according to described network code configuration information.

33. devices according to claim 32, it is characterised in that described network code configuration information includes following information At least one:

Network code mode, encoder matrix, coding vector.

34. devices according to claim 33, it is characterised in that include at least one of:

Receive described network code mode, institute that the main via node in the one or more via node sends State encoder matrix and described coding vector；

Receive described network code mode and institute that the main via node in the one or more via node sends State coding vector, determine described encoder matrix according to described network code mode and described coding vector；

Receive the described network code mode that the main via node in the one or more via node sends, connect Receive auxiliary via node in the one or more via node determine according to described network code mode described The described encoder matrix sent after encoder matrix and described coding vector and described coding vector.

35. devices according to claim 32, it is characterised in that described decoder module includes:

Judging unit, the data received described in judge whether correct decoding；

First decoding unit, in the case of in the judged result of described judging unit for being, according to described The data not received described in the data received and the decoding of described network code configuration information；

Second decoding unit, in the case of the judged result of described judging unit is no, according to described net The data received described in the decoding of network coded layout information and the described data not received.

36. devices according to claim 32, it is characterised in that also include:

Judge module, for judging whether the data after being correctly decoded described coding；

First preserves module, in the case of the judged result at described judge module is for being, preserves correct solution Data after Ma；

Second preserves module, in the case of the judged result of described judge module is no, preserves the most correct The data of decoding, wherein, described incorrectly decoded data are used for what the subsequent time with current time received Data aggregate decodes.