CN101150349A - Method for controlling signal transmission in network devices of multi-path and multi-jumper relay network - Google Patents
Method for controlling signal transmission in network devices of multi-path and multi-jumper relay network Download PDFInfo
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- CN101150349A CN101150349A CNA2006101163459A CN200610116345A CN101150349A CN 101150349 A CN101150349 A CN 101150349A CN A2006101163459 A CNA2006101163459 A CN A2006101163459A CN 200610116345 A CN200610116345 A CN 200610116345A CN 101150349 A CN101150349 A CN 101150349A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2603—Arrangements for wireless physical layer control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
Abstract
This invention relates to a method for controlling transmission of signals in network equipment of multi-route multie-hop relay network including: carrying out coherence coding to being transmitted signals, transmitting the multiple sequences by multiple routes, receiving the multiple signal sequences generated by the multi-route multiple coherence coding, carying out joint decoding to the signal sequences and carrying out coherence coding again to the signal sequence got from the joint decoding and transmitting them via multiple routes. This invention also provides a control device for controlling transmission of signals in the network equipment of multi-route and multi-hop relay network and related network equipment.
Description
Technical field
The present invention relates to wireless communication system, relate in particular to the method and the corresponding apparatus of control signal transmission in the multi-hop relay wireless network of using the multipath relaying.
Background technology
The wireless network of high frequency sighting distance (LOS, Line of Sight) is often propagated.Like this, the scope that this wireless network can cover is limited, especially in urban area.In the edge of a sub-district or the shadow region of this sub-district (shadowed areas), the throughput of user data can descend sharp, and because complicated wireless communications environment tends to occur some blind areas.
It is generally acknowledged that it may be the most promising solution that promotes user data-throughput and enlarge communication range that relay station (RS, Relay Station) is integrated in the cell area.In the new architecture of this solution, subscriber station (SS, Subscriber Station) does not need directly and base station (BS, Base Station) communication and user data can be by relay station by relay transmission.Specifically, the relay station receiving subscriber data also is transmitted to next with it and jumps until the destination of final these data of arrival, and this is actually a multi-hop (multi-hop) network.
Compare with single-hop (one-hop) network architecture, multihop network all increases at flexibility, reliability and aspect of performance, and can promote user throughput and enlarge communication range.Owing in a sub-district, have increasing relay station, between subscriber station and base station, may have mulitpath by a plurality of relay stations.By to these relay stations, via node in other words, introduce intelligent routing algorithm after, whole network can reach the traffic load balance and can obtain to tackle the redundant path of link failure.
IEEE 802.16j mobile multi-hop relaying (MMR, Mobile Multi-hop Relay) task groups is formally set up at the beginning of 2006, and it is conceived to the expansion of 802.16 pairs of multi-hops of IEEE and relaying.This standard has adopted the mobile multi-hop relaying technique between base station and mobile radio station, thereby a system and a function of supporting multi-hop relay based on physical layer and MAC layer is provided.This change provides the standard that promotes throughput and enlarge communication range, simultaneously can compatible IEEE Std.802.16e standard.And be understandable that the purpose of relay station is to promote throughput and enlarge communication range.In this standard, route is defined as an enforceable demand, because it has consequence aspect network more flexible and the reliability.In order to further expand the ability of multihop network, people have further proposed the idea of multi-hop relay as optional technical need in this standard.The innovation that this standard should be supported to make between mobile multi-hop relay base station and mobile radio station for high redundancy, reliability and efficient more than a path of jumping.These contents (IEEEC802.16j-06/050r4) are described in the motion to some extent at " Proposed Technical Requirements for IEEE 802.16TGj ".This motion was ratified by the IEEE802.16 meeting in July, 2006.In this motion, clear and definite demand has been proposed the multipath relaying.
Support that on multi-hop wireless network communication is very important reliably.The multipath decline will occur because be accompanied by the mobile or overlapping of mobile radio station, relay station, and then cause often concentrating outburst or unexpected the outburst in the wireless multi-hop channel symbol mistake (symbol errors) of channel output.The traditional scheme of tackling these burst errors is to carry out Bit Interleave (bit-interleaving) to handle before transmission.By interleaving treatment, burst error is expanded on a lot of symbols, thereby can be counted as random error.But for the channel with long-term burst (long burst), the scheme of interleaving treatment generally need spend the long time, thereby produces bigger processing delay, and this possibly can't be applicable to some real-time application.And length has increased the complexity of handling apart from interleaving treatment, makes that in a wireless multi-hop network mistake each jumping in entire path is all accumulated, and causes having to take strict fault recovering mechanism.These problems, can list of references " multi-hop radio access cellular concept forfourth-generation mobile communications system " (Yasushi Yamao, Toru Otsu, Atsushi Fujiwara, Hidekazu Murata and Susumu Yoshida work, Personal, Indoor and Mobile Radio Communications, 2002.The 13thIEEE International Symposium on Volume 1,59-63 vol.1.) and document " Relay-based deployment concepts forwireless and mobile broadband radio " (Ralf Pabst 15-18 Sept.2002Page (s):, work such as Bernhard H.Walke, " IEEE Comunications Magazine ", 2004 the 9th phases).
Up to now, also less than effective ways at the problems referred to above.
At present, in IEEE 802.16j standard, the detailed technology scheme of cooperating relay (Cooperative Relay) is suggested (for example, IEEE C802.16j-06_006r1 or the like).But cooperating relay is only considered the diversity (diversity) of physical layer, wherein two or more relay stations by distributed MIMO (output of multichannel input multichannel, multiple-inputmultiple-output) or virtual MIMO mode come the cooperation transmission data.Identical time/frequency resource is assigned to different parallel paths, so synchronous and MIMO encoding scheme are all had high request.And the multipath relaying is compared with cooperating relay, although it also is defined in IEEE 802.16j, it is carried out at the MAC layer, and the different paths that are used for transmission signals have taken different time-division resources or different frequency division resources.It can be regarded as the space diversity of a high level multipath relaying, and it is considered to provide effective space diversity (spatial diversity) to resist the burst error that occurs in the wireless channel.Regrettably, although IEEE 802.16j has defined the multipath relaying as an optional demand, also there is not available technical scheme so far.
Summary of the invention
For this reason, the method and the corresponding apparatus that the purpose of this invention is to provide control signal transmission in the multi-hop relay wireless network of using the multipath relaying.
For this reason, according to an aspect of the present invention, provide a kind of method of control signal transmission in the destination node of the multi-hop relay wireless network of using the multipath relaying, wherein, finished transmission course by correlation coding and combined decoding.
At said method, comprise the steps: that a. carries out the correlation coding to burst to be sent, and obtain a plurality of coding postamble sequences; B. described a plurality of coding postamble sequences are sent by multipath.Wherein, described coding can be MAC layer coding; Described correlation coding can pass through linear block codes or cyclic code, and perhaps both connection sign indicating numbers carry out.
At said method, also comprise: date stamp is all added a cover in described a plurality of coding postamble sequences, and at this moment, above-mentioned steps b is accordingly: described a plurality of coding postamble sequences of adding a cover date stamp are sent by multipath.
At said method, also comprise: described a plurality of coding postamble sequences are handled, make each all comprise a specific sequence number, at this moment, above-mentioned steps b is accordingly: described a plurality of coding postamble sequences that comprise specific sequence number are sent by multipath.
At said method, comprise the steps: that also c. receives a plurality of coding postamble sequences that generate through the correlation coding that come from multipath; D. combined decoding is carried out in these a plurality of coding postamble sequences.Wherein, described combined decoding carries out with the decoding scheme of described correlation encoding scheme correspondence.Wherein, described step c also comprises: according to received described a plurality of in the coding postamble sequence that correlation coding generates each self-contained described specific sequence number these a plurality of coding postamble sequences are sorted, at this moment, above-mentioned steps d is accordingly: combined decoding is carried out in these a plurality of coding postamble sequences through ordering
At said method, also comprise the steps: each the coding postamble sequence that receives by each path is all decoded in the mode of non-combined decoding.If described the decoding successfully, then the coded format of decoded burst before according to described decoding encoded once more, and the burst after will encoding once more sends; If described decoding failure then directly sends described burst.
At said method, comprise the steps: that also the burst that is obtained after e. is with combined decoding carries out the correlation coding once more, and obtain a plurality of coding postamble sequences; F. described a plurality of coding postamble sequences are sent by multipath.
At said method, described multipath can be a plurality of channels, also can be a plurality of paths that form by different resource on a channel, wherein said different resource be any or the multiple combination in different time resource, different frequency resource or the different sign indicating number resource.
At said method, described coding postamble sequence is sent out in multiframe and is received in multiframe, certainly, also can be sent out in a frame and be received in a frame
At said method, the described network equipment only carries out combined decoding to described burst of adding a cover date stamp to be handled.
According to another aspect of the present invention, provide a kind of control device of control signal transmission in the network equipment of the multi-hop relay wireless network of using the multipath relaying, wherein, carried out signal transmission control by the mode of correlation coding and combined decoding.
Said apparatus comprises: the correlation code device is used for burst to be sent is carried out the correlation coding, and obtains a plurality of coding postamble sequences; Dispensing device is used for described a plurality of coding postamble sequences are sent by multipath.
Said apparatus also comprises: the date stamp generating apparatus is used for date stamp is added a cover in described each coding postamble sequence.
Said apparatus also comprises: the sequence number generating apparatus is used for described each coding postamble sequence is handled and made it comprise a specific sequence number.
Said apparatus also comprises: receiving system is used to receive a plurality of coding postamble sequences that generate through the correlation coding that come from multipath; First decoding device is used for combined decoding is carried out in these a plurality of coding postamble sequences.
Said apparatus also comprises: collator, be used for according to received a plurality of in the coding postamble sequence that correlation coding generates each self-contained described specific sequence number these a plurality of coding postamble sequences are sorted, at this moment, accordingly, described first decoding device then is used for combined decoding is carried out in these a plurality of coding postamble sequences through ordering.
Said apparatus also comprises: second decoding device is used for each the coding postamble sequence that receives by each path is all decoded in the mode of non-combined decoding.If described the decoding successfully, then the coded format of decoded burst before according to described decoding encoded once more, and the burst after will encoding once more sends; If described decoding failure then directly sends this burst.
Wherein, can the header packet information of received burst information be read and judge in the said apparatus, if the destination of described burst is not a present networks equipment, be that the described network equipment is not a destination node, the burst that then described correlation code device is obtained after with combined decoding carries out the correlation coding once more, and by described dispensing device a plurality of coding postamble sequences that obtained is sent by multipath once more; If the described network equipment is a destination node, the burst that obtains after the then above-mentioned decoding can be proceeded to handle by other device in the present networks equipment.
According to a further aspect of the invention, also provide a kind of network equipment in the multi-hop relay wireless network of using the multipath relaying, wherein, comprised aforesaid control device.The described network equipment can be base station/or relay station or mobile radio station.
Benefit of the present invention comprises at least:
(1) improved throughput and realized load balancing.If one or more paths are blocked, then the inventive method can realize by different paths.So the load on different paths can be balanced, and the throughput of whole system is enhanced.In addition, the unlike signal of a business also can be carried in different paths, thereby can obtain high handling capacity.
(2) obtained space diversity.Burst error often occurs in the wireless channel.According to method provided by the invention, the probability that occurs in the burst error in all relay route will reduce.If the burst on different paths is correlated with, the burst burst error on a path can be corrected by the signal on other paths.
(3) prevent error diffusion.The FEC of intermediate relay or combined decoding can prevent error diffusion effectively and reduced can't the restoring signal sequence at destination node probability.
And, with the cooperating relay of physical layer different be that solution provided by the invention can realize on MAC layer even higher layer, makes this scheme more flexibly and to synchronously and the reduction of the demand of resource allocation.Based on different encoding schemes, it can be applied to different occasions at different objects.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is the schematic diagram according to an example of multi-hop relay wireless network of the present invention;
Fig. 2 is the schematic diagram according to the virtual multipath relaying in jumps of first embodiment of the invention;
The schematic diagram of Fig. 3 first embodiment of the present invention;
Fig. 4 is the schematic diagram that carries out the correlation coding according to first embodiment of the invention;
Fig. 5 is the flow chart according to an example of multi-hop relay wireless network of the present invention
Fig. 6 is the composition structural representation according to the control device of second embodiment of the invention; And
Fig. 7 is the composition structural representation of the control device of a third embodiment in accordance with the invention.
Embodiment
With reference to figure 1, it has described the schematic diagram according to an example of multi-hop relay wireless network of the present invention.Particularly, it has described the process of a burst of transmission in the multi-hop relay network that adopts the multipath relaying.More specifically, be that example is set forth the process by multipath relay transmission signal with mobile radio station in a wireless communication system to the process that the base station sends a uplink information.Wherein, the part in left side be each node among Fig. 1, i.e. the connection diagram of mobile radio station (for example subscriber station), relay station, base station, and the right side is divided into the schematic diagram that corresponding signal transmits.
Be understandable that, after the topological structure of the sub-district with relay station is determined, by concentrating or Distribution Algorithm can calculate reachable path between some source node and destination node.With reference to figure 1, in mobile multipath relay system, system resource is by base station assigns.Behind a relay station accessing mobile communication network, it is assigned with a basic connection identifier (CID, Connection Identifier), and connecting station of identifier by this can be identified.When the base station is a relay station distributing radio resource, the broadcast of sending from the base station, exist more than a burst space (burst spaces), these burst spaces are identified by the basic connection identifier of relay station.So in each burst space, relay station can send a upward signal to next-hop node, accordingly, will in specific burst space, receive the signal that is transmitted respectively as the relay station of next jumping.For example, with reference to figure 1, wherein relay station 1 can send upward signal to relay station 3, relay station 2 and (be appreciated that ground in the burst space at its place, then send downstream signal in the opposite direction), and accordingly, relay station 3 and relay station 2 receive the signal that is transmitted respectively in the burst space at its place.
With reference to figure 1, at first, the part space that happens suddenly concentrate to be distributed by the base station, and is broadcast to all relay stations and mobile radio station (among Fig. 1 1. part) by up mapping (UL-MAP) broadcast.Can learn that with reference to above-mentioned explanation in this case, relay station 1 is allowed to send upward signal to relay station 3 and relay station 2.Then, mobile radio station will be as sending its upward signal to relay station 1 usually in the time slot (slot) of mobile radio station.When relay station 1 receives a MAC burst from mobile radio station, its according to of the present invention with in these signal sequence encodings to two different MAC burst group, i.e. Rx1 shown in Fig. 1, Rx2.According to different objects, this encoding scheme can be different, and necessary these two different burst groups of words can be correlated with, and will specifically discuss in the back about the problem of coding.Then, in the burst group one, for example Rx1, to be transferred to relay station 3 at relay station 1 → relay station 3 time slots (among Fig. 1 3. part), and another group, Rx2 for example is transferred to relay station 2 in relay station 1 → relay station 2 time slots (among Fig. 1 4. part).Here, on relay station 3 and relay station 2, can decode separately to the burst that receives separately respectively, it is non-combined decoding, if decode and successfully then be encoded into new burst once more respectively, and in the time slot of time slot of relay station 3 (among Fig. 1 6. part) and relay station 2 (among Fig. 1 5. part), send these bursts to base station respectively; Otherwise the burst before directly will decoding sends the base station to.When the base station receives this two burst groups, the base station will be according to corresponding coding scheme to its decoding (among Fig. 1 7. part).So far, the transmission course of a burst is finished.
With reference to figure 2, it is at the schematic diagram of having described on the basis of Fig. 1 according to the virtual multipath relaying in jumps of first embodiment of the invention.Different with content shown in Figure 1 is that it exists a single path multi-hop structure.But according to summary of the invention provided by the invention, from relay station 4 to the process of relay station 5 transmission signal sequences, can use the transmission means of multipath provided by the invention.
With reference to figure 2, wherein left part has been described each node, i.e. the connection diagram of mobile radio station, relay station, base station, and the right side is divided into the schematic diagram of corresponding signal transmission.Mode according to multi-path transmission is carried out the correlation coding to this burst equally before relay station 4 sends burst, and sends formed a plurality of bursts to next jumping respectively by different resources, and promptly relay station 5.For example, burst 1 (that is, Rx1) (that is, Rx2) is sent to relay station 5 respectively with burst 2 similarly.Relay station 5 will carry out combined decoding to it after receiving these two bursts, the burst that the decoding back forms is sent to next jumping, i.e. base station again.
Therefore, just can finish the transmission means of virtual multipath by the principle of Fig. 2.Direct benefit like this is, can the mode by combined decoding carry out correction process in single path.Those skilled in the art will appreciate that if there is mistake, can carry out error correction to the burst that is transmitted by combined decoding at above-mentioned relay station 5 places so.
It will be appreciated by those skilled in the art that, transmission course shown in Figure 2 can adopt multiple different resource to carry out, for example adopt different frequency resources, different time resource or different sign indicating number resources, certainly, can adopt other resource under the situation that technology allows, this does not influence flesh and blood of the present invention yet.
Simultaneously, those skilled in the art also is appreciated that, although foregoing description is from the transmission course of relay station 4 to relay station 5, in fact, the transmission between one of any single path is jumped also can be adopted similar mode, for example, mobile radio station in Fig. 2 is to the transmission between the relay station 4, and relay station 5 is to the transmission between the base station, perhaps in downlink transmission process, promptly by the base station between the mobile radio station, can use this mode equally.
With reference to figure 3, it has described the schematic diagram of the first embodiment of the present invention.Wherein, described relay station 101～106, and relay station 101 sends a burst as source node, relay station 106 finally receives this burst as destination node.And those skilled in the art will appreciate that the above-mentioned part of nodes that is expressed as in the relay station also can be other node, and for example relay station 101 can be a mobile radio station or base station, accordingly, relay station 106 can be a base station or mobile radio station.
With reference to figure 3, wherein exist mulitpath and constituted many junction networks of multi-hop framework involved in the present invention.For example, there is multihop path 101 → 102 → 105 → 106, and 101 → 103 → 105 → 106, and 101 → 104 → 106.As seen, wherein, relay station 105 is an aggregation node.Be understandable that, present embodiment is in order to illustrate specific implementation of the present invention briefly legibly, so only show above-mentioned node and path, actual applicable cases can be complicated more, and those skilled in the art can be applied to other embodiments of the invention in the complicated more network configuration in conjunction with the enlightenment of summary of the invention of the present invention, present embodiment and prior art.
Therefore, between above-mentioned source node (that is, relay station 101) and destination node (that is, relay station 106), form a plurality of disjoint paths.And be understandable that, in other embodiments, between above-mentioned source node and destination node, may form a plurality of disjoint paths or the disjoint path of part.Further, the base station is every paths Resources allocation, and source node encodes to its burst and by different paths these bursts are sent, and finally these bursts will be received by destination node.After this, destination node will be decoded and it will be sent once more these bursts.
In the present embodiment, a burst is sent by relay station 101.This burst can be sent by this relay station 101 at first, and promptly relay station is real source node, for example is a mobile radio station, or a base station; This burst is transmitted again after at first can be also can being sent and be received by this relay station 101 by other node, i.e. relay station and fict source node, and only be a relay station.Those skilled in the art will appreciate that in the present embodiment relay station 101 sends a burst as source node.
According to content of the present invention, be understandable that described relay station was encoded to this burst according to a specific correlation encoding scheme before sending above-mentioned burst.Principle in conjunction with Fig. 1 can be known, burst after being encoded may form a plurality of bursts, for example, form three bursts, send along three above-mentioned paths respectively, again for example, first burst wherein will be along the path 101 → 102 → 105 → 106 be transmitted, be transmitted to relay station 105 again after promptly being received, finally arrive relay station 106 by relay station 102; Secondary signal sequence wherein will be along the path 101 → 103 → 105 → 106 be transmitted, and is transmitted to relay station 105 again after promptly being received by relay station 103, finally arrives relay station 106; The 3rd burst wherein will be along the path 101 → 104 → 106 be transmitted, and is transmitted to relay station 106 again after promptly being received by relay station 104, and therefore, final three bursts all arrive destination node, and promptly relay station 106.Content according to the present invention is appreciated that, these bursts are finally by combined decoding, thereby intactly received by destination node 106 by the burst that source node 101 sends, then, destination node 106 can continue this burst is handled, and for example sends once more or is directly handled by destination node.
Refer again to Fig. 3, in the first embodiment of the present invention, at above-mentioned aggregation node, i.e. relay station 105 places, aggregation node also carries out combined decoding to two received bursts.As previously mentioned, because two bursts all adopt correlation to encode, therefore has correlation therebetween, therefore, in the combined decoding process, aggregation node can be finished error correction based on received burst, therefore, can make burst error be limited in the relatively little scope effectively.For example, fully under the situation of error correction, then the burst itself that sends once more from this aggregation node is correct, can reduce the error probability that next jumps received burst at aggregation node; Again for example, under aggregation node can the situation of part error correction, then the mistake of the burst that sends once more from this aggregation node was reduced, and jumped mistake in the received burst thereby also can reduce next.
Correspondingly, those skilled in the art will appreciate that above-mentioned mechanism for correcting errors can be applied in a plurality of nodes on the multipath, thereby can reduce the negative effect of burst error effectively.Especially, during this mechanism can be applied in and easily send out wireless channel (error-pronewireless channel) wrong.
Refer again to Fig. 3, in described first embodiment, on the receiving node on arbitrary path, as relay station 102, relay station 103 and relay station 104, all sequence is carried out non-combined decoding processing to the received signal.If successfully decoding, the burst after then encoding once more and will encoding once more sends next to and jumps, otherwise the burst before will decoding sends to next jumping.Those skilled in the art is appreciated that this and implements, so set forth with exceeding.
Simultaneously referring to figs. 2 and 3, with first embodiment similarly among other embodiment, from described relay station 105 between the relay station 106 and/or relay station 101 to relay station 104 and/or relay station 104 to can be on single path between the relay station 106 transmission means of applying virtual multipath, at this moment, at relay station 106, its burst that at first will transmit using virtual multipath is decoded, and the burst that the decoding back forms carries out combined decoding again.Those skilled in the art is appreciated that this and implements, so set forth with exceeding.
Refer again to Fig. 3, in described first embodiment, consider the burst that exists simultaneously by the multithreading transmission, be multipath repeating signal sequence and common burst, for example therefore the burst of single path transmission, is necessary these bursts are distinguished.In the present embodiment, multipath repeating signal sequence all added be stamped a date stamp (not shown among Fig. 3), like this, at intermediate node and destination node, when receiving a burst of adding a cover described date stamp, this burst should be used as multipath repeating signal sequence and treat, and on the via node with its forwarding, on destination node with its ordering or decoding.Otherwise this burst just is used as that the normal signal sequence is treated and as handling usually.
Those skilled in the art will appreciate that above-mentioned date stamp can be accomplished in several ways, for example the content in the territory in packet header is set to 1 and shows to have date stamp, otherwise for not adding a cover date stamp.Perhaps also can realize that this does not influence flesh and blood of the present invention by other real mode.
It will be appreciated by those skilled in the art that, with the similar embodiment of above-mentioned first embodiment in, also can not adopt date stamp, at this moment, each node in transmission path is no matter be that single path or multipath all need to judge voluntarily that according to the content of burst this burst is multipath repeating signal sequence or common burst, according to the enlightenment of prior art, therefore those skilled in the art can repeat no more this understanding and enforcement.
In another embodiment of the present invention, used distributed controlling schemes (distributedcontrol schemes).Correspondingly, in this embodiment, used a burst sequence number for multipath repeating signal sequence and be used to identify the order that each burst sends.In the present embodiment, when destination node received a plurality of multipath repeating signal sequence from a plurality of paths, it at first sorted to these unordered bursts, carries out corresponding decoding processing after the ordering again.The benefit of this processing mode is transparent for the upper strata.
It will be appreciated by those skilled in the art that, with above-mentioned another embodiment similarly among other embodiment, also can not adopt the implementation of burst sequence number, at this moment, destination node is judged the order of burst according to the numbering that self has in the received burst and is sorted.According to the enlightenment of prior art, therefore those skilled in the art can repeat no more this understanding and enforcement.
With reference to figure 4, in described first embodiment, mobile radio station sends burst C1, C2, C3 to relay station 1, after relay station 1 is received these bursts, encodes according to a suitable generator matrix G:
(A1，A2)＝[C1，C2]·G
(A1，A3)＝[C1，C3]·G
Thereby generate burst A1, A2 and A1, A3 with correlation.Like this, but the signal after transfer encoding on relay station 1 → relay station 3 → base station, path (A1, A2), but and the signal after the transfer encoding on relay station 1 → relay station 2 → base station, path (A1, A3).On the intermediate node relay station 3 or relay station 2 in path, can be to the grouped data A1 that receives, A2 or A1, A3 carry out independent decoding respectively with error correction, promptly decode in the mode of non-combined decoding.If error correction success (promptly decoding successfully), then can encode once more and send to the base station the burst after the error correction; Otherwise the not decoded signal sequence that then will receive directly sends to the base station.
The base station is receiving above-mentioned grouped data A1, and A2 and A1 behind the A3, can obtain C1, C2, C3 by decoding matrix H:
(C1，C2)＝[A1，A2]·H
(C1，C3)＝[A1，A3]·H
Those skilled in the art will appreciate that above-mentioned encoder matrix G can have multiple implementation, correspondingly, can obtain decoding matrix H.In the present embodiment, adopting above-mentioned matrix G, H system is critical data based on burst C1, so adopted the correlation encoding scheme to its fully redundance, C2, C3 is not then carried out redundancy encoding.In specific implementation, in conjunction with flesh and blood of the present invention and in conjunction with concrete application background, can take different schemes neatly, for example, the encoding scheme of present embodiment just can be applied in needs to guarantee that critical data is received and saves again under the situation of channel resource by safety.And under opposite extreme situations, then can be so that described coding back data are identical, the signal that transmits on the path, promptly above-mentioned two roads is C1, C2, C3.Those skilled in the art can determine multiple correlation encoding scheme according to prior art, for example adopt more senior coded system, as adopt linear block codes, cyclic code or both connection sign indicating numbers, as RS (Reed-Solomon) sign indicating number, Turbo code etc., and those skilled in the art can also adopt other coded system to be achieved, and this does not influence flesh and blood of the present invention.
With reference to figure 4, with present embodiment similarly among other embodiment, cause and to decode if the road grouped data of transmitting in above-mentioned two paths is wrong, for example, A1, the A1 among the A2 makes a mistake, and then can utilize the A1 in the second tunnel grouped data partly to replace, and decode, thereby improve the signal transmission performances.
With reference to figure 1, among another embodiment of the present invention of structure, be sent to signal of base station by relay station 2 and relay station 3 respectively by relay station 1 and in multiframe, finish as shown in Figure 1 again.The present invention can be applied under such situation equally.At this moment, destination node, for example combined decoding is not carried out in the base station among Fig. 1 after first frame is finished, but after multiframe is finished, and just begins to carry out combined decoding after promptly receiving all coherent signal sequences.Can learn that by present embodiment content of the present invention can be applied on the basis of a frame and/or multiframe and implement.
With reference to figure 1, among another embodiment of the present invention of structure, still use basic algorithm to the process of relay station 1 transmission signal sequence as shown in Figure 1, promptly non-correlation encoding scheme of the present invention again from mobile radio station; Before relay station 2 and relay station 3 transmission bursts, then carry out the correlation coding from relay station 1, promptly adopt content of the present invention; Simultaneously, in the process of relay station 2 transmission, on single path, adopted the transmission means of virtual multipath again through correlation encoded signals sequence at relay station 1; Finally, decode to received burst in the base station, thereby finish signals transmission.Therefore, pass through present embodiment, it will be appreciated by those skilled in the art that, summary of the invention of the present invention can mix use mutually with traditional algorithm, and content of the present invention also can be used selectively, whether the mode of applying virtual multipath selectively for example also can selective application aggregation node carries out the processing mode of combined coding side.
With reference to figure 5, it has described the flow chart according to an example of multi-hop relay wireless network of the present invention.Suppose that a network equipment sends one or more bursts as source node, it at first carries out the correlation coding to burst to be sent, obtains a plurality of coding postamble sequences, step S501; Then, the burst behind these a plurality of codings is sent, step S502 those skilled in the art will appreciate that the burst behind a plurality of codings will send by multipath; Next, next in the multihop network jumped, and the promptly next network equipment receives the burst behind the coding, step S503; This network equipment judges by the destination-address information in the burst that receives whether himself is destination node, step S504; If destination node, then judge whether to exist the burst behind the above-mentioned coding once more, step S510, if exist, then show burst by multi-path transmission to destination node, then correspondingly carry out combined decoding, obtain decoded burst, step S505, and then will this decoded burst be transferred to other device at present networks equipment end so that it is proceeded to handle step S506, burst behind the if there is no above-mentioned coding, then do not need to carry out combined decoding, direct execution in step S506 is about to burst and is transferred to other device at present networks equipment end so that it is proceeded to handle; Meet above-mentioned step S504,, judge once more then whether this network equipment is aggregation node, step S507 if the network equipment is not a target device; If not aggregation node, then directly with this packet forwarding, step S508, thus carry out above-mentioned steps S502 once more; If aggregation node, then combined decoding is carried out in a plurality of coding postamble sequences that receive, step S509, because this network equipment is not a target device, therefore this burst also needs to be sent to next jumping, therefore, above-mentioned decoded burst is carried out correlation coding once more and send once more, be i.e. execution in step S501 once more.
With reference to figure 5, it will be appreciated by those skilled in the art that, related burst to be sent can be that present networks equipment is by the received burst of other network equipments among the above-mentioned steps S501, can be the burst that the present networks equipment self produces, this influence flesh and blood of the present invention yet.
With reference to figure 5, those skilled in the art will appreciate that and after above-mentioned each received signal sequence, can carry out independent decoding to this burst according to the mode of foregoing description, promptly non-combined decoding.If decode successfully, handle again after then can encoding once more decoded burst, for example be sent to next jumping or directly handle by other device in the network equipment; Otherwise the not burst of decoding that then will receive is directly handled, and for example is sent to next jumping or carries out combined decoding.
With reference to figure 6, composition structural representation of the control device that provides according to a second embodiment of the present invention has been provided for it.With reference to figure 6, control device 31 comprises correlation code device 311, is used for burst to be sent is carried out the correlation coding, and obtains a plurality of coding postamble sequences; And dispensing device 312, be used for described a plurality of coding postamble sequences are sent by multipath.In the present embodiment, correlation code device 311 is connected with dispensing device 312, and the burst after directly will encoding sends via this dispensing device 312.Those skilled in the art will appreciate that the burst after dispensing device 312 will will be encoded according to the suitable route of routing iinformation selection of multipath sends, and does not give unnecessary details at this.
With reference to figure 7, it has described the composition structural representation of the control device that a third embodiment in accordance with the invention provides.Wherein, on the basis of correlation code device 311 and dispensing device 312, described control device 31 also comprises date stamp generating apparatus 313, is used for date stamp is added a cover in described each coding postamble sequence; And sequence number generating apparatus 314, be used for described each coding postamble sequence is handled and made it comprise a specific sequence number; And receiving system 315, be used to receive a plurality of coding postamble sequences that generate through the correlation coding that come from multipath; And collator 317, be used for according to received a plurality of in the coding postamble sequence that correlation coding generates each self-contained described specific sequence number these a plurality of coding postamble sequences are sorted; And first decoding device 318, be used for combined decoding is carried out in these a plurality of coding postamble sequences.In the present embodiment, after described correlation code device 311 is finished coding, then the burst behind the coding is also added a cover date stamp through described date stamp generating apparatus 313, it will be appreciated by those skilled in the art that, according to summary of the invention provided by the invention, described control device only just carries out operations such as combined decoding to adding the burst that is stamped date stamp.In the present embodiment, after date stamp was added a cover in described coding postamble sequence, described sequence number generating apparatus 314 made also and comprises a specific sequence number in these bursts that these sequence numbers will be used for burst is sorted.
With reference to figure 7, in the present embodiment, after the burst behind a plurality of codings was received device 315 receptions, then these bursts at first sorted through collator 317, and the burst after the ordering carries out combined decoding by described first decoding device 318 again.And those skilled in the art will appreciate that with present embodiment similarly among other embodiment, for example described control device 31 does not comprise under the situation of this collator 317, described burst can and sort without described collator 317.
With reference to figure 7, when the network equipment at described control device 31 places is not target device, the address that is received burst indicates that its destination is not a present networks equipment, then above-mentioned first decoding device 318 is after finishing combined decoding, coding sends these bursts once more so that it carries out correlation once more thereby decoded burst is transferred to described correlation code device 311, arrives target device until these bursts by that analogy.And when the network equipment at described control device 31 places is target device, then above-mentioned first decoding device 318 sends to decoded burst other processing unit in the present networks equipment after finishing combined decoding, original device that is used for the processing signals sequence in the present networks equipment for example, those skilled in the art is appreciated that at this this and does not give unnecessary details.
With reference to figure 7, those skilled in the art will appreciate that in different embodiments of the invention the device that above-mentioned control device 31 is comprised can be different.For example in a variation of the foregoing description, control device 31 does not comprise date stamp generating apparatus 313; In another changed, control device 31 did not comprise sequence number generating apparatus 314, did not comprise corresponding collator 317 yet.
In other similar embodiment of above-mentioned the 3rd embodiment, described control device 31 also comprises second decoding device 316, is used for each the coding postamble sequence that receives by each path is all decoded in the mode of non-combined decoding.In such embodiments, received burst is at first decoded so that carry out error correction through second decoding device, if decode successfully, it is the error correction success, then the coded format of decoded burst before according to described decoding encoded once more, and the burst after will encoding once more sends; If described decoding failure, i.e. error correction failure then directly sends this burst.Even those skilled in the art will appreciate that above-mentioned error correction failure, then the aggregation node at multi-path network can carry out combined decoding by above-mentioned control device 31, thus still error correction once more.Equally, it will be appreciated by those skilled in the art that, if decode successfully, then need burst is returned to the preceding coded format of decoding so that this burst still meets the coded format that correlation is encoded, thus can be at aggregation node or destination node by combined decoding.
In conjunction with aforesaid embodiment, those skilled in the art will appreciate that with the corresponding situation of one embodiment of the present of invention under, described collator 317 sorts to these bursts by the burst sequence number that comprises in the burst.And with the corresponding situation of an alternative embodiment of the invention under, then described collator 317 is by the numbering that self has in the burst, but not the burst sequence number that adds according to the present invention sorts to these bursts.According to the enlightenment of prior art, therefore those skilled in the art can repeat no more this understanding and enforcement.
Again with reference to figure 3, it will be appreciated by those skilled in the art that, the network equipment that comprises above-mentioned control device 31 can be the source node among Fig. 3, for example mobile radio station or base station or relay station, it also can be the destination node among Fig. 3, for example mobile radio station or base station or relay station one by one also can be the relay stations among Fig. 3.When the network equipment that comprises above-mentioned control device 31 is relay station, for example relay station 105, because it is an aggregation node, so after the coding postamble sequence that reception relay station 102, relay station 103 send respectively, it carries out combined decoding by described first decoding device 318 to these bursts, carry out correlation coding by 31 pairs of decoded bursts of described relevant phase code device again after the decoding, and the burst after these are encoded once more sends by dispensing device 312 once more.
More than specific embodiments of the invention are described.It will be appreciated that the present invention is not limited to above-mentioned specific implementations, those skilled in the art can make various distortion or modification within the scope of the appended claims.
Claims (39)
1. the method for a control signal transmission in the network equipment of the multi-hop relay wireless network of using the multipath relaying wherein, is finished transmission course by correlation coding and combined decoding.
2. method according to claim 1 wherein, comprises the steps:
A. burst to be sent is carried out the correlation coding, and obtain a plurality of coding postamble sequences;
B. described a plurality of coding postamble sequences are sent by multipath.
3. according to each described method in the claim 1 to 2, wherein, the described MAC layer that is encoded to is encoded.
4. according to each described method in the claim 1 to 3, wherein, described correlation coding is by linear block codes or cyclic code, and perhaps both connection sign indicating numbers carry out.
5. according to each described described method in the claim 2 to 4, wherein, also comprise:
-date stamp is all added a cover in described a plurality of coding postamble sequences;
Wherein, described step b is: described a plurality of coding postamble sequences of adding a cover date stamp are sent by multipath.
6. according to each described method in the claim 2 to 5, wherein, also comprise:
-described a plurality of coding postamble sequences are handled, make each all comprise a specific sequence number;
Wherein, described step b is: described a plurality of coding postamble sequences that comprise specific sequence number are sent by multipath.
7. according to each described method in the claim 1 to 6, wherein, also comprise the steps:
C. receive a plurality of coding postamble sequences that generate through the correlation coding that come from multipath;
D. combined decoding is carried out in these a plurality of coding postamble sequences.
8. method according to claim 7, wherein, described combined decoding carries out with the decoding scheme of described correlation encoding scheme correspondence.
9. according to claim 7 or 8 described methods, wherein, described step c also comprises:
-according to received described a plurality of in the coding postamble sequence that correlation coding generates each self-contained described specific sequence number these a plurality of coding postamble sequences are sorted,
Wherein, described steps d is: combined decoding is carried out in these a plurality of coding postamble sequences through ordering.
10. according to each described method in the claim 1 to 9, wherein, also comprise the steps:
-each the coding postamble sequence that receives by each path is all decoded in the mode of non-combined decoding.
11. method according to claim 10 wherein, if described the decoding successfully, then the coded format of decoded burst before according to described decoding encoded once more, and the burst after will encoding once more sends.
12. according to each described method in the claim 10 to 11, wherein, if described decoding failure then directly sends described burst.
13., wherein, also comprise the steps: according to each described method in the claim 1 to 12
E. the burst that is obtained behind the combined decoding is carried out once more the correlation coding, and obtain a plurality of coding postamble sequences;
F. described a plurality of coding postamble sequences are sent by multipath.
14. according to each described method in the claim 1 to 13, wherein, described multipath is a plurality of channels.
15. according to each described method in the claim 1 to 14, wherein, described multipath is a plurality of paths that form by different resources on a channel.
16. method according to claim 15, wherein, described different resource be in different time resource, different frequency resource or the different sign indicating number resource any or appoint multiple combination.
17. according to each described method in the claim 1 to 16, wherein, described coding postamble sequence is sent out in multiframe and is received in multiframe.
18. according to each described method in the claim 1 to 17, wherein, the described network equipment only carries out combined decoding to described burst of adding a cover date stamp to be handled.
19. according to each described method in the claim 1 to 18, wherein, the described network equipment is base station or relay station or mobile radio station.
20. the control device of a control signal transmission in the network equipment of the multi-hop relay wireless network of using the multipath relaying wherein, carries out signal transmission control by the mode of correlation coding and combined decoding.
21. device according to claim 20 wherein, comprising:
The correlation code device is used for burst to be sent is carried out the correlation coding, and obtains a plurality of coding postamble sequences;
Dispensing device is used for described a plurality of coding postamble sequences are sent by multipath.
22. according to each described device in the claim 20 to 21, wherein, the described MAC layer coding that be encoded to.
23. according to each described device in the claim 20 to 22, wherein, described correlation coding is by linear block codes or cyclic code, perhaps both connection sign indicating numbers carry out.
24., wherein, also comprise according to each described device in the claim 20 to 23:
The date stamp generating apparatus is used for date stamp is added a cover in described each coding postamble sequence.
25., wherein, also comprise according to each described device in the claim 20 to 24:
The sequence number generating apparatus is used for described each coding postamble sequence is handled and made it comprise a specific sequence number.
26., wherein, also comprise according to each described device in the claim 20 to 25:
Receiving system is used to receive a plurality of coding postamble sequences that generate through the correlation coding that come from multipath;
First decoding device is used for combined decoding is carried out in these a plurality of coding postamble sequences.
27. device according to claim 26, wherein, described combined decoding carries out with the decoding scheme of described correlation encoding scheme correspondence.
28., wherein, also comprise according to each described device in the claim 20 to 27:
Collator, be used for according to received a plurality of in the coding postamble sequence that correlation coding generates each self-contained described specific sequence number these a plurality of coding postamble sequences are sorted,
Wherein, described first decoding device also is used for combined decoding is carried out in these a plurality of coding postamble sequences through ordering.
29., wherein, also comprise according to each described device in the claim 20 to 28:
Second decoding device is used for each the coding postamble sequence that receives by each path is all decoded in the mode of non-combined decoding.
30. device according to claim 29 wherein, if described the decoding successfully, then the coded format of decoded burst before according to described decoding encoded once more, and the burst after will encoding once more sends.
31. according to each described device in the claim 29 to 30, wherein, if described decoding failure then directly sends this burst.
32. according to each described device in the claim 20 to 31, wherein, if the described network equipment is not a target device, the burst that then described correlation code device is obtained after with combined decoding carries out the correlation coding once more, and by described dispensing device a plurality of coding postamble sequences that obtained is sent by multipath once more.
33. according to each described device in the claim 20 to 32, wherein, described multipath is a plurality of channels.
34. according to each described device in the claim 20 to 32, wherein, described multipath is a plurality of paths that form by different resources on a channel.
35. device according to claim 34, wherein, described different resource be in different time resource, different frequency resource or the different sign indicating number resource any or appoint multiple combination.
36. according to each described device in the claim 20 to 35, wherein, described coding postamble sequence is sent out in multiframe and is received in multiframe.
37. according to each described device in the claim 20 to 36, wherein, it only carries out combined decoding to described burst of adding a cover date stamp and handles.
38. the network equipment in the multi-hop relay wireless network of using the multipath relaying wherein, comprises as each described control device in the claim 20 to 37.
39. according to the described network equipment of claim 38, wherein, it is base station/or relay station or mobile radio station.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101163459A CN101150349A (en) | 2006-09-20 | 2006-09-20 | Method for controlling signal transmission in network devices of multi-path and multi-jumper relay network |
| PCT/CN2007/002764 WO2008034350A1 (en) | 2006-09-20 | 2007-09-19 | A method for controlling signal transmitting in a network equipment which is used in a multi-channel and multi-hop relay wireless network |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006101163459A CN101150349A (en) | 2006-09-20 | 2006-09-20 | Method for controlling signal transmission in network devices of multi-path and multi-jumper relay network |
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| WO (1) | WO2008034350A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989895A (en) * | 2010-11-29 | 2011-03-23 | 中兴通讯股份有限公司 | Method and device for space-time diversity transmission |
| CN102405682A (en) * | 2009-02-02 | 2012-04-04 | 亚州大学校产学协力团 | Apparatus and method for relaying multiple links in a communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AU2003288871A1 (en) * | 2003-12-19 | 2005-07-05 | Telefonaktiebolaget Lm Ericsson (Publ) | Relay station and method for enabling reliable digital communications between two nodes in a wireless relay based network |
| SE0303602D0 (en) * | 2003-12-30 | 2003-12-30 | Ericsson Telefon Ab L M | Method and arrangement in self-organizing cooperative network |
| KR100909529B1 (en) * | 2005-04-20 | 2009-07-27 | 삼성전자주식회사 | Cooperative Diversity Method in MIO Wireless Network |
| CN1996785B (en) * | 2006-01-06 | 2012-05-09 | 华为技术有限公司 | Forwarding system and its method for the broadband wireless access |
-
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- 2006-09-20 CN CNA2006101163459A patent/CN101150349A/en active Pending
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102405682A (en) * | 2009-02-02 | 2012-04-04 | 亚州大学校产学协力团 | Apparatus and method for relaying multiple links in a communication system |
| CN101989895A (en) * | 2010-11-29 | 2011-03-23 | 中兴通讯股份有限公司 | Method and device for space-time diversity transmission |
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