CN103260209B - Implementation method, system and the communication site that multi-hop data transmits in wireless network - Google Patents
Implementation method, system and the communication site that multi-hop data transmits in wireless network Download PDFInfo
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- CN103260209B CN103260209B CN201310213834.6A CN201310213834A CN103260209B CN 103260209 B CN103260209 B CN 103260209B CN 201310213834 A CN201310213834 A CN 201310213834A CN 103260209 B CN103260209 B CN 103260209B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
Implementation method, system and the communication site that multi-hop data transmits in wireless network.The invention discloses a kind of multi-hop link communication means, system and communication sites, this method comprises: transmitting website sends the mac frame for carrying at least two address for servicees, wherein each address for service corresponds to different starting response times；Receiving station receives the mac frame that transmitting website is sent, if it is determined that carrying the address of itself in the mac frame received, and being not detected in channel when the starting response time of itself expires has other websites to make response to the mac frame, then carries out response to the mac frame.This method can adjust in time transmission path according to the variation of channel, improve transmission reliability, be added significantly to handling up for wireless network.
Description
Technical field
The invention belongs to field of communication technology more particularly to a kind of multi-hop link communication means, system and communication site.
Background technique
The application of wireless communication technique is more and more wider, and the wireless network majority being widely used at present all is with center base
The single-hop networks stood, such as: WLAN, Cellular Networks.The communication mechanism of single-hop communication network determines in practical applications
Its network coverage will be very restricted, the preferable network coverage in order to obtain, Shi Biyao in single-hop communication network
The performance and addressing of center base station are put forward higher requirements, this greatly improves the cost of building a station that will lead to center base station.
In order to improve the coverage area of network, the communication mode of multi-hop is more and more used in wireless network, it is common more
Jump cordless communication network have wireless mesh network (mesh net), the acentric ad hoc deployed wireless networks of multi-hop --- ad hoc net or
Multihop network (Multi-hop Network) etc..
Existing multi-hop wireless communication network is generally using similar to instant communication mode as defined in 802.11 network protocols
Realize multi-hop communication, the communication site in wireless network is before access channel, sending mac frame, in wireless network
Other communication sites are simultaneously unaware of which communication site the mac frame will issue, and receiving station will be written in transmitting website in mac frame
Address (or mark equivalent with address) indicate which communication site the mac frame is destined to.
This mode emits the communication each time that website is carried out, and requires specific by setting one in mac frame
The equivalent mark of address for service or its address makes the mac frame be directed toward a specific receiving station.That is the prior art is usual
It is an address for service only to be specified in mac frame, therefore this mode realizes a multi-hop indeed through multiple single-hops
Communication, this will lead to the increase of the data transfer throughput expense in wireless network, wireless network made to need to undertake biggish network flow
Amount, influences the handling capacity of whole network.And so that multi-hop communication transmission is become more unreliable in itself, especially lead in a network
When believing the channel state variations of website, transmission path adjustment can not be timely carried out, to not be able to satisfy the low of real time business
Time delay and high QoS performance requirement.
Summary of the invention
In view of this, being used it is an object of the present invention to provide a kind of multi-hop link communication means, system and communication site
To solve, traffic overhead is big present in the multi-hop wireless communication system of the prior art, transmission reliability is low, cannot be according to channel
Variation adjusts the problem of transmission path in time.In order to which some aspects of the embodiment to disclosure have a basic understanding, below
Give simple summary.The summarized section is not extensive overview, nor to determine key/critical component or describe this
The protection scope of a little embodiments.Its sole purpose is that some concepts are presented with simple form, in this, as it is subsequent specifically
Bright preamble.
The embodiment of the present invention provides a kind of multi-hop link communication means, comprising:
Emit website and send the mac frame for carrying at least two address for servicees, wherein each address for service corresponds to different rise
Beginning response time；
Receiving station receives the mac frame that transmitting website is sent, however, it is determined that the ground of itself is carried in the mac frame received
Location, and being not detected in channel when the starting response time of itself expires has other websites to make response to the mac frame,
Response then is carried out to the mac frame.
In some alternative embodiments, the address for service is the equivalent shape for being sent to the MAC Address or MAC Address of website
Formula.
In some alternative embodiments, suitable according to arrangement of the address for service in mac frame in all address for servicees
Sequence determines the starting response time that website is sent to corresponding to each address for service.
In some alternative embodiments, it is between the adjacent starting response time for being sent to website of the response sequence
Time interval.
It in some alternative embodiments, also include the address of targeted sites in the mac frame.
In some alternative embodiments, before carrying out response to the mac frame, further includes:
Judge that itself carries out response to the mac frame when it is present with the presence or absence of the path for reaching targeted sites.
In some alternative embodiments, the judgement itself is specifically included with the presence or absence of the path for reaching targeted sites:
According to the targeted sites address for including in the mac frame received, in the adjacent bus station list of self maintained
The targeted sites address is searched for, when searching the targeted sites address, determines that itself has the road for reaching targeted sites
Diameter；Otherwise, it determines the path for reaching targeted sites is not present in itself.
In some alternative embodiments, transmitting website is sent to ground for what the address of targeted sites was set as current MAC frame
Location, and set targeted sites to that response time is corresponding is sent to website with the first starting.
In some alternative embodiments, in the mac frame also comprising by transmitting website to targeted sites path,
The path is made of the address of several communication sites.
In some alternative embodiments, before carrying out response to the mac frame, further includes:
Judge itself path with the presence or absence of arrival by the website on transmitting website to targeted sites path, when it is present,
Response is carried out to the mac frame.
In some alternative embodiments, the judgement itself is with the presence or absence of the road reached by transmitting website to targeted sites
The method in the path of the website on diameter, specifically includes:
According to the path by transmitting website to targeted sites for including in the mac frame received, in self maintained
Website in adjacent bus station list in searching route determines that itself has the path for reaching website on the path when searching；
Otherwise, it determines the path for reaching website on the path is not present in itself.
In some alternative embodiments, transmitting website is set as all websites on targeted sites path itself are reached
And only set them to the website that is sent to of mac frame, and set starting response time corresponding to the posterior website of hop count earlier than
Starting response time corresponding to the preceding website of hop count.
In some alternative embodiments, the adjacent bus station list is that the 1 of the website list for jumping website or 1 are jumped
The list for jumping website with 2.
In some alternative embodiments, when the list that the list or 1 jump of the 1 jump website jump websites with 2 passes through one section
Between listen to channel and obtain.
In some alternative embodiments, the receiving station is after receiving the mac frame, by detection channel
Whether there is signal transmission to judge whether there is other websites and made response to the mac frame.
In some alternative embodiments, before carrying out response to the mac frame, further includes:
Judge in the mac frame that receives with the presence or absence of starting response time being sent to website, being if it exists behind
It is no be all itself 1 jump website, when exist and not all be itself 1 jump website when, using no more than setting transmission power threshold
The maximum transmission power of value sends the acknowledgement frame that response is carried out to the mac frame.
In some alternative embodiments, the method for response being carried out to the mac frame, further includes:
When it is described to be sent to website not be targeted sites when, send forwarding to website thereafter while sending acknowledgement frame
Frame.
The embodiment of the present invention also provides a kind of communication site, comprising:
Receiving module, the mac frame sent for receiving transmitting website, carries at least two address for servicees in the mac frame,
Wherein, each address for service corresponds to different starting response times；
Responder module, for if it is determined that carry the address of itself in the mac frame received, and in the starting response of itself
Being not detected in channel when time expires has other websites to make response to the mac frame, then answers the mac frame
It answers.
In some alternative embodiments, the responder module, is specifically used for:
According to the address for service in mac frame putting in order in all address for servicees, determine each address for service institute
The corresponding starting response time for being sent to website.
In some alternative embodiments, the responder module, is also used to:
Before carrying out response to the mac frame, judge that itself whether there is the path for reaching targeted sites, when it is present,
Response is carried out to the mac frame.
In some alternative embodiments, the responder module, is specifically used for:
According to the targeted sites address for including in the mac frame received, in the adjacent bus station list of self maintained
The targeted sites address is searched for, when searching the targeted sites address, determines that itself has the road for reaching targeted sites
Diameter；Otherwise, it determines the path for reaching targeted sites is not present in itself.
In some alternative embodiments, the responder module, is also used to:
Judge itself path with the presence or absence of arrival by the website on transmitting website to targeted sites path, when it is present,
Response is carried out to the mac frame.
In some alternative embodiments, the responder module, is specifically used for:
According to the path by transmitting website to targeted sites for including in the mac frame received, in self maintained
Website in adjacent bus station list in searching route determines that itself has the path for reaching website on the path when searching；
Otherwise, it determines the path for reaching website on the path is not present in itself.
In some alternative embodiments, the responder module, is specifically used for:
Judge in the mac frame that receives with the presence or absence of starting response time being sent to website, being if it exists behind
It is no be all itself 1 jump website, when exist and not all be itself 1 jump website when, using no more than setting transmission power threshold
The maximum transmission power of value sends the acknowledgement frame that response is carried out to the mac frame.
In some alternative embodiments, the responder module, is specifically used for:
After the receiving module receives the mac frame, by whether occurring signal transmission judgement in detection channel
Whether there are other websites to make response to the mac frame.
In some alternative embodiments, above-mentioned communication site, further includes:
Sending module carries at least two address for servicees for sending mac frame in the mac frame, wherein be each sent to
Address corresponds to different starting response times.
The embodiment of the present invention also provides a kind of multi-hop link communication system, comprising: at least three above-mentioned communication sites.
Multi-hop link communication means, system and communication site provided in an embodiment of the present invention, transmitting website, which is sent, to be carried extremely
The mac frame of few two address for servicees, wherein each address for service corresponds to different starting response times；Receiving station receives hair
Penetrate the mac frame of website transmission, however, it is determined that the address of itself is carried in the mac frame received, and in the starting response of itself
Between be not detected in channel when expiring and there are other websites to carry out response, then response is carried out to the mac frame.This method passes through carrying
More than two address for servicees are realized and adjust transmission path in real time according to channel variation, so as to as far as possible pass mac frame
Defeated communication site to closest to targeted sites is transferred directly to targeted sites, reduces the number of transmission, improves the speed of transmission
Degree and efficiency, meanwhile, insertion relay node can be adjusted in real time when channel is deteriorated, improve transmission success rate, and then improve number
According to the reliability of transmission.
For the above and related purposes, one or more embodiments include being particularly described below and in claim
In the feature that particularly points out.Certain illustrative aspects are described in detail in the following description and the annexed drawings, and its instruction is only
Some modes in the utilizable various modes of the principle of each embodiment.Other benefits and novel features will be under
The detailed description in face is considered in conjunction with the accompanying and becomes obvious, the disclosed embodiments be all such aspects to be included and they
Be equal.
Figure of description
Fig. 1 is the schematic illustration of multi-hop link communication means in the embodiment of the present invention one；
Fig. 2 is the schematic illustration of multi-hop link communication means in the embodiment of the present invention two；
Fig. 3 is the realization principle schematic diagram that Source Site sends after mac frame in the embodiment of the present invention three；
Fig. 4 is the realization principle schematic diagram that relay sends after acknowledgement frame+forwarding frame in the embodiment of the present invention three；
Fig. 5 is the structural schematic diagram of multi-hop link communication system in the embodiment of the present invention；
Fig. 6 is the structural schematic diagram of communication site in the embodiment of the present invention.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Practice them.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment
Only represent possible variation.Unless explicitly requested, otherwise individual component and function are optional, and the sequence operated can be with
Variation.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The range of bright embodiment includes equivalent obtained by the entire scope of claims and all of claims
Object.Herein, these embodiments of the invention can individually or generally be indicated that this is only with term " invention "
For convenience, and if in fact disclosing the invention more than one, the range for being not meant to automatically limit the application is to appoint
What single invention or inventive concept.
The embodiment of the invention provides a kind of methods that multi-hop data transmission is realized in wireless network, by transmission
Multiple address for servicees are set in mac frame, according to the dynamic changes of wireless channel, flexibly chooses communication link, realize data
Transmission, specifically includes following processes: (1) emitting website when sending mac frame, the multiple of the mac frame are provided in mac frame and are sent
Up to address (here multiple refer to two or more, at least two), and each address for service corresponds to different startings and answers
Answer the time；(2) receiving station is when receiving the mac frame, if in the address for service of mac frame including the address of its own,
It prepares to carry out response to this mac frame；(3) if the website for preparing response does not originate response when reaching it and originating response time
Website of the time before it carries out response, then it carries out response in corresponding starting response time, it may be assumed that if the starting corresponding to it
Response time is earliest starting response time (the first starting response time), then it carries out response in the starting response time,
And if the starting response time corresponding to it is not the first starting response time, is detectd before the starting response time for reaching it
It listens channel, judge whether other websites have been made response before this, if before the starting response time for reaching it not
It listens to other websites and has made response, then it originates response time at it and carries out response, and otherwise, it will be without response.
In existing cordless communication network, emits website when sending mac frame, carry one in mac frame and explicitly send
Up to address or its equivalent mark, the mac frame is made to be directed toward a specific receiving station, i.e. the prior art is usually only in mac frame
In specify an address for service.Method proposed by the present invention is arranged at least two address for servicees to a mac frame and is each sent to
Address corresponds to different starting response times, in this way, after mac frame sending, as long as there is a website that can be properly received,
The mac frame will obtain response.This method realizes that multi-hop data is passed by making full use of the site resource in multihop network
Defeated reliability.
In method of the present invention, the address for service is generally referred to as being sent to the MAC Address of website, but also wraps
The various equivalents for having contained MAC Address, such as other marks of the current network MAC layer specified to its.
In the method as proposed in the present invention, it can set, mac frame is sent to rising for website (the corresponding website of address for service)
The sequence of beginning response time with it is corresponding be sent to website mac frame all address for servicees form address for service sequence in certain
Kind puts in order, and (such as tandem of arrangement) is consistent, and such as: the website starting response time being arranged in front is also preceding；Further
It can set, be constant duration between the adjacent starting response time for being sent to website of response sequence, i.e., n-th starting is answered
Answering time (n is positive integer) and the time interval of (n+1)th starting response time is a fixed value；In this way, current MAC frame
Website is sent to when having correctly received the mac frame, only rising for it can be calculated in the arrangement position with it in address for service
Beginning response time.
In the method as proposed in the present invention, with the non-first corresponding website of starting response time have correctly received containing
When the mac frame of multiple address for servicees, it can judge other websites whether by whether there is signal transmission in detection channel
Response is carried out, it may be assumed that before reaching it and originating response time, signal transmission occur if detecting in channel, that is, can determine whether
There are other websites to carry out response, thus, when reaching its starting response time, it will be without response.It is this whether to deposit
It can be realized by the signal energy in detection channel in the detection of signal transmission.
In the method as proposed in the present invention, transmitting website, can also be by the targeted sites of this communication when sending mac frame
Address be placed in mac frame, the website in wireless network when receiving the mac frame, first judge oneself exist there is no reach
The path of targeted sites, only when oneself has the path for reaching targeted sites, it just carries out response.That is, at this
(2) step of invention proposition method, receiving station is when receiving mac frame, only in mac frame comprising the MAC of its own
In the case that location and itself presence reach the path of targeted sites, it just prepares to carry out response to this mac frame.It does not send out at it
When the existing path for oneself having arrival targeted sites, even if other conditions are all satisfied, it also will be without response.Further, it connects
The path of oneself and adjacent bus station can be saved by way of adjacent bus station list by receiving website, and in this case, it is by mesh
Labeling station point is compared with the website in adjacent bus station list, to judge oneself with the presence or absence of the path for reaching targeted sites.?
Under above situation, for receiving station after making response to mac frame or simultaneously, it is (such as neighbouring by the path saved by itself
The path saved in site list) current MAC frame relayed into targeted sites.In other words, emitting website transmission one includes
The mac frame of multiple address for servicees, also comprising the address of targeted sites in the mac frame, when the website in wireless network receives
The mac frame and when finding the address of oneself in the address for service of the mac frame, it will be looked into the adjacent bus station list of oneself
Look for targeted sites, if having found in the list of neighboring sites targeted sites (this means that itself there are one can reach mesh
The path of labeling station point), preparation is carried out response to received mac frame by it.
Further, transmitting website can also set the address of targeted sites to the address for service of current MAC frame, this
When, it sets targeted sites to, and response time is corresponding is sent to website with the first starting.
In the method as proposed in the present invention, transmitting website can also will reach targeted sites by itself when sending mac frame
Path be placed in mac frame, the path by several communication sites address (generally MAC Address or its equivalent mark) institute's structure
At this is also known as routing or multihop routing by itself reaching targeted sites, wireless network by the path for itself reaching targeted sites
Website in network first judges that oneself has the path for being not present and reaching the website in above-mentioned path, only when receiving mac frame
Oneself there is the path that reaches the website in above-mentioned path, (this still can be by by the website and oneself nearby stations on the path
Website in point list is compared to realize) when, it just carries out response.This is because being reached in above-mentioned path when it exists
Website path when, it also just certainly exist reach targeted sites path.After it makes response or simultaneously, it will lead to
Cross itself preservation path by current MAC frame be transmitted to it is above-mentioned by transmitting website to the website in targeted sites path, hereafter again
Mac frame is transmitted to targeted sites by the website.Further, receiving station can be saved by way of adjacent bus station list
The path of oneself and adjacent bus station, in this case, it by by transmitting website to targeted sites path website with it is neighbouring
Website on site list is compared, to judge oneself with the presence or absence of the path for reaching the website on above-mentioned path.In other words,
Emit website and send the mac frame comprising multiple address for servicees, also comprising current transmitting station point to Target Station in the mac frame
The path of point, which is made of several tactic wireless communication sites, when the website in wireless network receives
The mac frame and when finding the address of oneself in the address for service of the mac frame, it by the adjacent bus station list of oneself by
One searches the website on above-mentioned path, if having found some website on above-mentioned path in the list of neighboring sites, also just anticipates
Taste itself there are the path that one may finally reach targeted sites, preparation is carried out response to received mac frame by it.
As a special case, all websites that itself can be reached on the path of targeted sites by emitting website be set as and
It only sets them to the website that is sent to of mac frame, and sets starting response time corresponding to the posterior website of hop count earlier than jump
Starting response time corresponding to the preceding website of number.This is closed especially suitable for the position as onboard system between website
It is the scene that can be changed regularly.
In the method as proposed in the present invention, the website of wireless network can pass through the list of one oneself adjacent bus station of maintenance
To safeguard and save the path of itself and adjacent bus station.The method of wireless site maintenance adjacent bus station list: wireless site is tieed up
The list of the adjacent bus station of shield can be the list of its 1 jump website, be also possible to the list that its 1 jump jumps websites with 2.
Wherein, the list of website is jumped in the 1 of wireless site, can be realized by listening to the mac frame transmitted in channel.It realizes
Process is: wireless site receives the mac frame transmitted in channel and is decoded to obtain the ground of the transmitting website of the mac frame to it
Location, transmitting website corresponding to the mac frame are that it 1 jumps website, and wireless site is included in the list of 1 jump website.Pass through one section
The listening to the mac frame transmitted in wireless channel of time, it can be obtained by the list that website is jumped than more comprehensive 1.
Wherein, the list of website is jumped in the 2 of wireless site, can also be realized by listening to the mac frame transmitted in channel.It is real
Existing process is: wireless site receives the mac frame transmitted in channel and is decoded to it, if the mac frame be it is conventional only
The timing of the mac frame of one address for service (unique address for service is to receive address) and the mac frame transmitted by its front and back
Relationship can determine whether out that the mac frame is received website and is properly received, then current wireless site is with may determine that the reception of current MAC frame
Website corresponding to location is the 2 jump websites or 1 jump website of itself, it is scanned in 1 site list of itself, if it is not
1 for itself jumps website, then website is jumped in 2 for itself.Pass through the detecing to the mac frame transmitted in wireless channel of a period of time
It listens, it can be obtained by the list of a 2 jump websites comprising certain amount website.The list and 2 that wireless site jumps website for 1
The list for jumping website merges, and the list that its 1 jump jumps websites with 2 can be obtained.
It further, and is that optionally, in the method as proposed in the present invention, the station maintenance one oneself of wireless network is adjacent
The list of nearly website, when website receives the mac frame comprising multiple address for servicees and finds it oneself is multiple address for servicees
In the last one starting response time corresponding to website when, it is searched in the adjacent bus station list of oneself originates response time
The address of website before it, if having found the ground of some website of the starting response time before it in the list of neighboring sites
Location, it can carry out response to current MAC frame, and the mac frame is transferred to the website of the starting response time before it, then by
Mac frame is further sent to targeted sites by the website.Particularly, when it passes through the detection communicated in the recent period to adjacent bus station
The methods of, it is possible to determine that adjacent bus station of the above-mentioned starting response time before it, which has the path for reaching targeted sites or exist, to be arrived
Up to transmitting website and targeted sites path on website path when, it more can by this method answer current MAC frame
Answer and forward the mac frame.
It further, and is optionally, in the method as proposed in the present invention, to be sent to when in the mac frame that transmitting website is sent
When number of addresses is more, it could dictate that it is tail end response that the posterior a certain proportion of website of response time is originated in these address for servicees
Website.The list of one oneself adjacent bus station of station maintenance of wireless network is sent to ground comprising multiple when website receives one
The mac frame of location simultaneously finds that when oneself being the tail end response website in multiple address for servicees, it is in the adjacent bus station list of oneself
The address for searching non-tail end response website in address for service, if having found some non-tail end response website in the list of neighboring sites
Address, it can carry out response to current MAC frame, and the mac frame is transferred to the non-tail end response website, then by the website
Mac frame is further sent to targeted sites.Particularly, when it passes through the side such as detection communicated in the recent period to adjacent bus station
Method, it is possible to determine that above-mentioned non-tail end response website, which exists, to be reached targeted sites or reach on transmitting website and targeted sites path
When the path of website, it more can carry out response to current MAC frame by this method and forward the mac frame.
In the method as proposed in the present invention, website (being sent to website) corresponding to multiple address for servicees of mac frame, due to
The reasons such as position, distance have certain probability that can have hidden node problem, it may be assumed that these, which are sent between website, to listen to mutually not
The acknowledgement frame emitted to other side, thus may exist: in the case where being sent to website at one and response have been carried out, another
Starting response time is posterior to be sent to website and has carried out oneself response because the response is not detected, to will cause acknowledgement frame
Collision.
This problem can be considered in terms of two.If firstly, in view of two websites can to current MAC frame into
Row response, then they are all 1 jump website of the transmitting website, their relationship is likely to be 1 jump website, in the worst case
It is also 2 jump websites, it is smaller that the probability of hidden node problem, which occurs,.This is because: as long as the website in network is according to letter
Number energy and do not need to realize mac frame correct detection can judge that there are signal transmissions in channel, at this moment would not
The mac frame for carrying out oneself has sent.When a website sends acknowledgement frame, although this cannot be correctly received in 2 jump websites
Mac frame, but still have energy of the very big Probability Detection to the acknowledgement frame, to know that there are data to send in channel, without sending out
Give the acknowledgement frame of oneself.
Secondly, in method proposed by the present invention, being sent to when one to more reliably overcome the problems, such as concealed nodes
When website carries out response to current MAC frame, the website of response time behind is originated if it exists, then finds that those startings are answered at it
Answer the time behind be sent to website be not all it 1 jump website when, it can send the acknowledgement frame with power as big as possible,
Starting response time behind be sent to website for can be with very big Probability Detection to this acknowledgement frame, so as to avoid
The response frame collision that may be present because of hidden node problem.
That is, being sent in the above method of the present invention in order to overcome the problems, such as concealed nodes and carrying out response to mac frame
Before response mac frame, further includes: judge that response time is posterior is sent to website with the presence or absence of starting in the mac frame received, if
In the presence of further judge these be sent to website whether be all itself 1 jump website, when exist and not all be itself 1 jump website
When, acknowledgement frame is sent using the maximum transmission power of the transmission power threshold value no more than setting.
In the method as proposed in the present invention, the targeted sites that website is communicated if not this are sent to, then it is in the present invention
(3) step of proposition method carries out after response the mac frame or it is also desirable to receives to website forwarding thereafter
Mac frame, the data that the mac frame of forwarding will be carried comprising mac frame, but address for service part can be changed, and the one of mac frame head
A little domains may also have variation.The forwarding of mac frame can individually be forwarded again after it is to the mac frame response by being sent to website,
Forwarding frame can also be sent to website thereafter while sending acknowledgement frame to the mac frame, wherein acknowledgement frame and forwarding frame
Simultaneously send can be realized by some particular techniques, such as: by the two mac frames constitute a polymerization mac frame, by the two
MAC is respectively configured to a physical frame and the two physical frames is further configured to physical layer superframe, etc..In this hair
In bright description, we indicate this acknowledgement frame with acknowledgement frame+forwarding frame and forward the situation of mac frame while transmission.For answering
Answer frame and forward the situation of mac frame transmission simultaneously, the transmitting website and the website thereafter receive the acknowledgement frame+
After forwarding frame, acknowledgement frame therein will be extracted respectively and forwarding and performs corresponding processing mac frame, and to another frame without
Processing.
Method proposed by the present invention provides a kind of realization side of high efficient and reliable for the data transmission in wireless multi-hop network
Method, but method of the invention can be not only used for multihop network, be equally applicable to more in the wireless network comprising central node
Hop count is according to transmission.In the network comprising central node, central node or general node can be employed as being that multi-hop data passes
Relay node in defeated can still realize efficient data by using method proposed by the present invention in such network
Transmission.
Specific reality of the above-mentioned multi-hop link communication means under different scenes is described in detail below by specific embodiment
Existing process.
Embodiment one
The multi-hop link communication means in wireless network that the embodiment of the present invention one provides jumps chain with 2 in wireless network
It is illustrated for the communication of road, principle is as shown in Figure 1.
Fig. 1 gives the realization principle signal that one kind 2 jumps communication, in Fig. 1, Source Site, relay and targeted sites
Respectively the list (adjacent bus station list) of website is jumped in the 1 of maintenance one oneself, which can be realized by channel sense, than
Such as: in the communication of 802.11 WLANs, emitting website when sending mac frame, in addition to address for service is written in mac frame
Outside, the address of transmitting website generally will be also written (if the process of communication shows to emit website in (i.e. the address of receiving station)
Address is explicitly, to be possible to be not written into the address of transmitting website in this case for receiving station), for no line number
Word intercom system is also such.For this transmitting website for identifying mac frame by address (or equivalent mark) in mac frame
With the system of receiving station, communication site in wireless network is by can be by finding its own to listening to for wireless channel
1 jumps website, so as to set up the list of 1 jump website.
Principle of Communication signal according to figure 1, realizes the communication process packet that data are sent from Source Site to targeted sites
It includes:
Assuming that Source Site will send mac frame to targeted sites, but it not can determine that targeted sites are that station is jumped in oneself 1
Point, and Source Site has discovered that reaching the 2 of targeted sites by relay jumps path, then Source Site is used as transmitting website,
Two address for servicees: the address of targeted sites and the address of relay are being concurrently set into the mac frame that targeted sites are sent,
And setting the starting response times of targeted sites preceding, the starting response time of relay is rear, specifically: sending out in mac frame
Targeted sites after terminating the T1 moment are sent to obtain response permission (sending the permission of acknowledgement frame), and sending in mac frame terminates T1+T2
Relay obtains response permission after moment.That is: targeted sites can be used as receiving station, receive the MAC that Source Site is sent
Frame, corresponding starting response time are the T1 moment after mac frame is sent；Relay can be used as receiving station, receive
The mac frame that Source Site is sent, corresponding starting response time are the T1+T2 moment after mac frame is sent.
After Source Site sends mac frame, if targeted sites are properly received the mac frame, it sends in the frame
Acknowledgement frame is sent to Source Site after the completion T1 moment, since relay can listen to the acknowledgement frame, hereafter relay will
It is not involved in this communication.
After Source Site sends mac frame, if targeted sites fail to receive or fail that the mac frame is correctly received,
Then it will not make response after the T1 moment.At this point, if relay is properly received the mac frame, and at oneself
1 jump site list in have found the addresses of targeted sites, then it will send acknowledgement frame after the T1+T2 moment, it is general simultaneously
Current MAC frame can be forwarded to targeted sites, i.e., relay can send acknowledgement frame+forwarding frame, in this way, Source Site can connect
The response for the mac frame that relay sends it is received, while targeted sites also can receive the needs of relay forwarding
The data of transmission.
In wireless communications, due to website movement etc., it may result in the variation of channel conditions, pass through Fig. 1 institute
The method shown, can improve to degenerate two kinds with channel for channel changes the corresponding income of acquisition.It is assumed that targeted sites are originally
Websites are jumped in the 2 of Source Site, due to website is mobile etc., has had changed into the 1 of Source Site and have jumped website, but Source Site and do not know
Feelings can be with after carrying two address for servicees, between Source Site and targeted sites then by realization principle shown in FIG. 1
Communication is realized in such a way that 1 jumps, and targeted sites may directly receive Source Site mac frame, to reduce a data
Transmission, has saved traffic overhead, improves the speed and efficiency of data transmission, and then improves the data throughput of whole network.
And existing way is used, it is communicated by the way of can only still being jumped using 2 between Source Site and targeted sites, to will occupy larger
Internet resources.
It is assumed that targeted sites are originally that the 1 of Source Site jumps website, the letter due to website movement etc., between two websites
Road is deteriorated or targeted sites have had changed into the 2 of Source Site and jumped websites, but Source Site and ignorant, and at this moment Source Site is according to centainly
Method, it is determined that it some 1 jump website be also targeted sites 1 jump website, then it can using this 1 jump website as in
After website, the mac frame that the write-in of its address is sent, when the mac frame cannot be correctly received in targeted sites, so that it may to write
The 1 jump website entered is relay, realizes reliable communication in such a way that 2 jump.And use existing way, then present communications meeting
Failure.Therefore method of the invention improves the reliability of transmission.
Embodiment two
Multi-hop link communication means in wireless network provided by Embodiment 2 of the present invention, with the generality in wireless network
Multi-hop link communication for be illustrated.
The difference of the embodiment and embodiment one is for the method for the present invention to be generalized to the situation of general multi-hop communication,
Substantially, multi-hop communication can be regarded as the multiplicating of a communication process described in embodiment one, primary to the end logical
When letter process, it is possible that 1 jumps the situation of communication.Transmitting website can be Source Site and be also possible to relay, receiving station
Point can be relay and be also possible to targeted sites.
The routing that arrival targeted sites are written in Source Site in the mac frame for being sent to targeted sites reaches targeted sites in other words
Path (that is: being written sequentially to the address of each communication site in the multi-hop link up to targeted sites), Source Site conduct
When transmitting website sends mac frame or when relay sends acknowledgement frame+forwarding frame as transmitting website, from arrival Target Station
Its lower 1 jump website and lower 2 is selected to jump the address of website as currently transmitted mac frame or acknowledgement frame+forwarding frame in the path of point
Address for service, and set lower 2 and jump the starting response times of websites preceding, lower 1 jumps the starting response time of website rear, such as exists
Mac frame or acknowledgement frame+forwarding frame send after terminating the T1 moment lower 2 jump websites obtain response permissions (send acknowledgement frame+forwarding frame or
Send the permission of acknowledgement frame), lower 1 jump website obtains response after mac frame or acknowledgement frame+forwarding frame send the end T1+T2 moment
Permission.
Preferably, when Source Site sends mac frame as transmitting website or relay is used as transmitting website to send response
When frame+forwarding frame, predict that it jumps channel degradation between website 1 or it lower 1 is jumping website to it, lower 2 is jumping website
Data failure is sent, it can jump with lower 1 at it and be inserted into a relay between website, then using the relay as it
Lower 1 jumps website, and lower 1 jump website originally is transformed into lower 2 and jumps website, repeats above-mentioned transmission process；Current lower 2 jump website or
Lower 1 jumps website after mac frame or acknowledgement frame+forwarding frame is correctly received, if it is not targeted sites, it is in targeted sites
For its 1 jump website in the case where, it lower 1 is jumped into website, lower 2 jumps websites as the website that is sent to of currently transmitted forwarding frame,
Forwarding frame, which is sent to its lower 2, jumps or descends 1 to jump website, realizes the forwarding of the data of transmission；It or in targeted sites is its 1
Targeted sites are sent in the case where jumping website, mac frame by 1 jump communication；This process is continued until that mac frame is sent to
Until targeted sites.
Assuming that the multi-hop link that a N jumps (N >=2) is made of Source Site, N-1 relay and targeted sites.For
The convenience of statement, we indicate Source Site with website 0, N-1 relay is indicated to website N-1 with website 1, with website N
Indicate targeted sites, then by communication site k(0≤k≤N-2) lower 1 jump website to it, lower 2 communications for jumping websites can generality
It is realized with realization principle shown in Fig. 2 on ground.At this point, site k may be Source Site, it is also possible to some relay.
In Fig. 2, site k be Source Site or site k be relay but its it is downward 1 jump website send data
Fail, be inserted into the case that 1 new jump website communicated, has been mac frame transmitted by site k, in other situations, website
What k was sent is acknowledgement frame+forwarding frame；When site k+2 is targeted sites, transmitted by be acknowledgement frame, in other situations,
What is sent is all the acknowledgement frame+forwarding frame for including transmission data and response.
Embodiment three
The multi-hop link communication means in wireless network that the embodiment of the present invention three provides, still with one in wireless network
As property multi-hop link communication for be illustrated.With embodiment one and embodiment two the difference is that, embodiment one and real
Applying in example two is illustrated for two address for servicees are written in mac frame, in the present embodiment three, in mac frame
It is written for multiple address for servicees and is illustrated.
Assuming that Source Site is before transmitting data, a multihop routing is established between targeted sites in other words
Multihop path.Source Site and subsequent each relay for participating in communication can realize in the following manner multi-hop communication:
Several websites are sent as it before multihop routing is written mac frame and selected on multihop routing by Source Site
Mac frame is sent to website, and different starting response time: the posterior website of hop count is set to each website, originates response time
Preceding；The corresponding communication site of address for service in mac frame after having correctly received the mac frame, is reached as receiving station
There are other website responses (by detecting to the signal energy in channel in channel if it is not listened to when originating response time
And realize), then response is carried out to the mac frame received, while several jump websites in selected multihop routing thereafter are as forwarding
Frame is sent to website and sends the acknowledgement frame+forwarding frame in the manner aforesaid；That is: the posterior website of hop count, starting response time exist
Before；Until this process is continued until that the mac frame that Source Site is sent is properly received by targeted sites.
Assuming that the N that targeted sites are Source Sites jumps website, and sets Source Site and relay and choose on multihop routing it
K(K≤N afterwards) a communication site sends mac frame or sends acknowledgement frame+forwarding mac frame and be sent to website as it, then take M=
Min(k+K, N), then the case where Source Site sends mac frame, each jump communication site on multihop routing thereafter carries out response, can be as
Shown in Fig. 3, and relay k(is i.e.: the k-hop website on multihop routing) send acknowledgement frame+forwarding frame, each jump website thereafter into
The case where row response, is as shown in Figure 4.In the description of the present embodiment, with website n(n=0,1,2 ..., N) indicate by Source Site to
N-th in the multi-hop link of targeted sites jumps website.
In figs. 3 and 4, it can be assumed that the communication site of first response is spaced T after mac frame is sent0Time,
T after sending0Moment obtains response permission, and the communication site of second response is spaced T after mac frame is sent0+
T1Time, i.e. send after T0+T1Moment obtains response permission ... ... and so on, and the communication site of k-th response exists
Mac frame is spaced T after sending0+T1+…+TK-1Time, that is, the T after sending0+T1+…+TK-1Moment time obtains response
Permission.Time interval T1、T2、……、TK-1Can be time interval be T, can also be different.
For shown in Fig. 3, i.e., by taking Source Site sends the disposition of the communication site mac frame Hou Ge as an example, website K's
Originating response time is that Source Site sends the T after mac frame0Moment, in T0When moment expires, website K carries out response；Website K-1's
Originating response time is that Source Site sends the T after mac frame0+T1Moment, in T0+T1When moment expires, if website K-1 is not detected
There are other communication site's responses, then carries out response；……；And so on, the starting response time of website 1 is Source Site transmission
T after mac frame0+T1+…+TK-1Moment, in T0+T1+…+TK-1When moment expires, if other communication stations have been not detected in website 1
Point response, then carry out response.
For shown in Fig. 4, i.e., after sending acknowledgement frame+forwarding frame with relay k, the disposition of each communication site
For, the starting response time of website M is that relay k sends the T after acknowledgement frame0Moment, in T0When moment expires, website M hair
Send acknowledgement frame+forwarding frame or acknowledgement frame；The starting response time of website M-1 is that relay k sends the T after acknowledgement frame0+T1When
It carves, in T0+T1When moment expires, if website M-1 has been not detected other communication sites and has carried out response, acknowledgement frame+forwarding is sent
Frame；……；And so on, the starting response time of site k+1 is that relay k sends the T after acknowledgement frame+forwarding frame0+T1+…
+TM-k-1Moment, in T0+T1+…+TM-k-1When moment expires, if site k+1 has been not detected other communication sites and has carried out response,
Then send acknowledgement frame+forwarding frame.
Substantially, realization process described in embodiment two can be regarded as realization process described in embodiment three
Special case in k=2.Using this method, multi-hop communication can on the one hand become stable reliably, on the other hand can also use up can
Energy ground saving network flow is handled up so as to increase the total of network.
The station of response permission is obtained to avoid occurring hidden node problem in answering for the situation of k >=3
Point can carry out the transmission of acknowledgement frame using maximum transmission power as defined in communication protocol.
Further, optionally, Source Site and relay can arbitrarily be selected on multihop routing according to the criterion of setting
K website thereafter is taken, rather than being necessarily limited to is continuous k website, as Source Site can choose 1 jump website, 3 jump stations
Point, 6 jump websites ... be sent to website as its mac frame.
Example IV
The multi-hop link communication means in wireless network that the embodiment of the present invention four provides, for Source Site to targeted sites
There is the situation in the path of more than one arrival targeted sites in situation, the i.e. Source Site for having more than one to route.
If Source Site has found two or more the multihop routings towards targeted sites by the process of route discovery,
Then it mixedly can be sent to website using the communication site on two or more multihop routings as its mac frame sent,
Source Site determines the response sequence of these websites according to the criterion of setting；Relay in multi-hop link is directed to being ready for sending
When the acknowledgement frame of the mac frame+forwarding frame, if it find that then it can there are the routing of two or more arrival targeted sites
The communication site in two or more routings is mixedly sent to website, relay as its forwarding mac frame sent
Determine that these websites carry out the sequence of response according to the criterion of setting.
Such as: assuming that Source Site has found the multihop routing link of two arrival targeted sites: the multihop routing 1 and N2 that N1 is jumped
Preceding K1(K1≤N1 on multihop routing 1 is chosen in the multihop routing 2 of jump, Source Site) jump preceding K2(K2 on website and multihop routing 2
≤ N2) website to be jumped as its mac frame sent is sent to website, the response sequence of these websites can be to meet and require as follows
Any combination: the website on same multihop routing, the starting response time of the posterior website of hop count is preceding；Different chain roads
Website does not reply the requirement of sequence.
Embodiments listed above one to example IV logically has internal association, such as embodiment third is that reality
Special case of the example four under an only multihop routing is applied, embodiment is implemented second is that special case of the embodiment three in K=2
Example is first is that the special case that embodiment two is jumped off 2.
In conclusion the implementation method that multi-hop data transmits in wireless network proposed by the present invention, may be summarized to be and include:
Transmitting website sends the mac frame for containing at least two address for service, wherein when each address for service corresponds to different starting responses
Between；Receiving station receives the above-mentioned mac frame that transmitting website is sent, if in the address for service of mac frame including the address of its own,
Then it prepares to carry out response to this mac frame；The website of response is ready for when itself corresponding starting response time expires not
Detecting in channel has other websites to carry out response, then carries out response to the mac frame received.
Above-mentioned multi-hop link communication means provided in an embodiment of the present invention, during realizing multi-hop communication, by
The address for service of write-in at least two, is counted using the mulitpath between the naturally occurring website of multihop network in mac frame
According to transmission, increases the reliability of multi-hop communication, is added significantly to handling up for whole network, be advantageously implemented the low of real time business
Time delay meets the QoS performance of real time business.
Based on the same inventive concept, the embodiment of the present invention also provides the multi-hop link communication system in a kind of wireless network,
The system structure as shown in figure 5, include at least three communication sites, such as in system shown in Fig. 5 include communication site 1,
Communication site 2, communication site 3, communication site 4, communication site 5, communication site 6 etc..
Above-mentioned communication site sends the mac frame of at least two address for servicees of carrying for emitting website, wherein each send
Different starting response times is corresponded to up to address；Receiving station receives the mac frame that transmitting website is sent, however, it is determined that receives
The address of itself is carried in mac frame, and is not detected in channel when the starting response time of itself expires and there are other websites
Response has been made to mac frame, then response has been carried out to mac frame.
Preferably, according to address for service in mac frame putting in order in all address for servicees, determine each address for service
The corresponding starting response time for being sent to website.
Preferably, whether above-mentioned communication site, is also used to after receiving mac frame, by believing in detection channel
Number transmission judges whether there is other websites and has made response to mac frame.
Preferably, above-mentioned communication site judges whether itself deposits before being also used to carry out response to the mac frame received
Response is carried out to mac frame when it is present in the path for reaching targeted sites.
Preferably, above-mentioned communication site, specifically for according to the targeted sites address for including in the mac frame that receives,
The targeted sites address is searched in the adjacent bus station list of self maintained determines itself when searching targeted sites address
In the presence of the path for reaching targeted sites；Otherwise, it determines the path for reaching targeted sites is not present in itself.
Preferably, above-mentioned communication site is also used to judge itself with the presence or absence of arrival by transmitting website to targeted sites road
The path of website on diameter carries out response to the mac frame received when it is present.
Preferably, above-mentioned communication site, specifically for according to including by transmitting website to target in the mac frame that receives
The path of website, the website in the adjacent bus station list of self maintained in searching route determine that itself exists when searching
Reach the path of website on the path；Otherwise, it determines the path for reaching website on the path is not present in itself.
Preferably, above-mentioned communication site, before being also used to carry out response to mac frame, judge in the mac frame received whether
In the presence of starting response time behind be sent to website, if it exists whether be all itself 1 jump website, when exist and not all be from
When website is jumped in the 1 of body, response is carried out to mac frame using the maximum transmission power transmission of the transmission power threshold value no more than setting
Acknowledgement frame.
Communication site in above system, which can be used as transmitting website, can also be used as receiving station.In above-mentioned communication system
Communication site, when being the start site in a multi-hop communication path, referred to as Source Site, when being a multi-hop communication path
When terminating website, referred to as targeted sites, when being the intermediate stations in multi-hop communication path, (i.e. communication site is Source Site and target
When website between website), referred to as relay.
Communication site in above-mentioned communication system, structure are as shown in Figure 6, comprising: receiving module 10 and responder module 20.
Receiving module 10, the mac frame sent for receiving transmitting website, carries at least two address for servicees in the mac frame,
Wherein, each address for service corresponds to different starting response times.
Responder module 20 for if it is determined that carry the address of itself in the mac frame received, and is answered in the starting of itself
Answering the time is not detected in channel when expiring and has other websites to make response to mac frame, then answers the mac frame received
It answers.
Preferably, above-mentioned responder module 20, specifically for the row according to address for service in mac frame in all address for servicees
Column sequence, determines the starting response time that website is sent to corresponding to each address for service.
Preferably, whether above-mentioned responder module 20 judges itself before being also used to carry out response to the mac frame received
Response is carried out to mac frame when it is present in the presence of the path for reaching targeted sites.
Preferably, above-mentioned responder module 20, specifically for according to the targeted sites address for including in the mac frame that receives,
Targeted sites address is searched in the adjacent bus station list of self maintained determines that itself is deposited when searching targeted sites address
In the path for reaching targeted sites；Otherwise, it determines the path for reaching targeted sites is not present in itself.
Preferably, above-mentioned responder module 20, is specifically used for: judging itself with the presence or absence of arrival by transmitting website to Target Station
The path of website on point path carries out response to mac frame when it is present.
Preferably, above-mentioned responder module 20, specifically for according to including by transmitting website in the mac frame that receives
To the path of targeted sites, the website in the adjacent bus station list of self maintained in searching route determines certainly when searching
There is the path for reaching website on the path in body；Otherwise, it determines the path for reaching website on the path is not present in itself.
Preferably, above-mentioned responder module 20, specifically for being believed after receiving module 10 receives mac frame by detection
Whether occur signal transmission in road to judge whether there is other websites and made response to mac frame.
Preferably, above-mentioned responder module 20, specifically for judging in the mac frame that receives with the presence or absence of starting response time
Behind be sent to website, if it exists whether be all itself 1 jump website, when exist and not all be itself 1 jump website when, adopt
The acknowledgement frame that response is carried out to mac frame is sent with the maximum transmission power of the transmission power threshold value no more than setting.
Preferably, above-mentioned communication site, further includes: sending module 30 carries in the mac frame of transmission for sending mac frame
At least two address for servicees, wherein each address for service corresponds to different starting response times.
Unless otherwise specific statement, term is such as handled, is calculated, operation, determination etc. can refer to one or more places
The movement and/or process of reason or computing system or similar devices, the movement and/or process will be indicated as processing system
It the data manipulation of physics (such as electronics) amount in register or memory and is converted into and is similarly represented as depositing for processing system
Other data of physical quantity in reservoir, register or the storage of other this type of information, transmitting or display equipment.Information and letter
Number any one of a variety of different technology and methods can be used to indicate.
It should be understood that the particular order or level of the step of during disclosed are the examples of illustrative methods.Based on setting
Count preference, it should be appreciated that in the process the step of particular order or level can be in the feelings for the protection scope for not departing from the disclosure
It is rearranged under condition.Appended claim to a method is not illustratively sequentially to give the element of various steps, and not
It is to be limited to the particular order or level.
In above-mentioned detailed description, various features are combined together in single embodiment, to simplify the disclosure.No
This published method should be construed to reflect such intention, that is, the embodiment of theme claimed needs clear
The more features of the feature stated in each claim to Chu.On the contrary, that reflected such as appended claims
Sample, the present invention are in the state fewer than whole features of disclosed single embodiment.Therefore, appended claims is special
This is expressly incorporated into detailed description, and wherein each claim is used as alone the individual preferred embodiment of the present invention.
It should also be appreciated by one skilled in the art that various illustrative logical boxs, mould in conjunction with the embodiments herein description
Electronic hardware, computer software or combinations thereof may be implemented into block, circuit and algorithm steps.In order to clearly demonstrate hardware and
Interchangeability between software surrounds its function to various illustrative components, frame, module, circuit and step above and carries out
It is generally described.Hardware is implemented as this function and is also implemented as software, depends on specific application and to entire
The design constraint that system is applied.Those skilled in the art can be directed to each specific application, be realized in a manner of flexible
Described function, still, this realization decision should not be construed as a departure from the scope of protection of this disclosure.
For software implementations, technology described in this application can be with the module of the herein described function of execution (for example, mistake
Journey, function etc.) it realizes.These software codes can store in memory cell and be executed by processor.Memory cell can
With realize in processor, also may be implemented outside the processor, in the latter case, it via various means by correspondence
It is coupled to processor, these are all well known in the art.
Description above includes the citing of one or more embodiments.Certainly, in order to describe above-described embodiment and description portion
The all possible combination of part or method is impossible, but it will be appreciated by one of ordinary skill in the art that each implementation
Example can do further combinations and permutations.Therefore, embodiment described herein is intended to cover fall into the appended claims
Protection scope in all such changes, modifications and variations.In addition, with regard to term used in specification or claims
The mode that covers of "comprising", the word is similar to term " includes ", just as " including " solved in the claims as transitional word
As releasing.In addition, the use of any one of specification in claims term "or" being to indicate " non-exclusionism
Or ".
Claims (25)
1. a kind of multi-hop link communication means characterized by comprising
Emit website and send the mac frame for carrying at least two address for servicees, wherein each address for service corresponds to different startings and answers
Answer the time；
Receiving station receives the mac frame that transmitting website is sent, however, it is determined that the address of itself is carried in the mac frame received, really
It is fixed itself to there is the path for reaching targeted sites, and be not detected in channel when the starting response time of itself expires and have other
Website has made response to the mac frame, then carries out response to the mac frame.
2. the method as described in claim 1, which is characterized in that the address for service is MAC Address or the MAC for being sent to website
The equivalents of location.
3. the method as described in claim 1, which is characterized in that according to the address for service in mac frame all address for servicees
In put in order, determine the starting response time that website is sent to corresponding to each address for service.
4. method as claimed in claim 3, which is characterized in that when the adjacent starting response for being sent to website of response sequence
Between between be constant duration.
5. the method as described in claim 1, which is characterized in that also comprising the address of targeted sites in the mac frame.
6. the method as described in claim 1, which is characterized in that the judgement itself is with the presence or absence of the road for reaching targeted sites
Diameter specifically includes:
According to the targeted sites address for including in the mac frame received, searched in the adjacent bus station list of self maintained
The targeted sites address determines that itself has the path for reaching targeted sites when searching the targeted sites address；It is no
Then, determining itself, there is no the paths for reaching targeted sites.
7. method as claimed in claim 5, which is characterized in that the address of targeted sites is set current MAC by transmitting website
The address for service of frame, and set targeted sites to that response time is corresponding is sent to website with the first starting.
8. the method as described in claim 1, which is characterized in that also comprising by transmitting website to target in the mac frame
The path of website, the path are made of the address of several communication sites.
9. method according to claim 8, which is characterized in that before carrying out response to the mac frame, further includes:
Itself is judged with the presence or absence of the path reached by the website on transmitting website to targeted sites path, when it is present, to institute
It states mac frame and carries out response.
10. method as claimed in claim 9, which is characterized in that it is described judgement itself with the presence or absence of reach by transmitting website to
The method in the path of the website on the path of targeted sites, specifically includes:
According to the path by transmitting website to targeted sites for including in the mac frame received, in the neighbouring of self maintained
Website in site list in searching route determines that itself has the path for reaching website on the path when searching；It is no
Then, determining itself, there is no the paths for reaching website on the path.
11. the method for claim 7, which is characterized in that itself is reached the institute on targeted sites path by transmitting website
There is website to be set as and only set them to the website that is sent to of mac frame, and sets starting corresponding to the posterior website of hop count
Response time is earlier than starting response time corresponding to the preceding website of hop count.
12. the method as described in claim 6 or 10, which is characterized in that the adjacent bus station list is 1 jump station of the website
The list that the list of point or 1 jump jump websites with 2.
13. method as claimed in claim 12, which is characterized in that described 1 jumps the column that the list of website or 1 jump jump websites with 2
Table is obtained by the channel of listening to of a period of time.
14. the method as described in claim 1, which is characterized in that the receiving station leads to after receiving the mac frame
It crosses in detection channel and signal transmission whether occurs and judge whether there is other websites response has been made to the mac frame.
15. the method as described in claim 1, which is characterized in that before carrying out response to the mac frame, further includes:
Judge in the mac frame that receives with the presence or absence of starting response time behind be sent to website, if it exists whether all
Itself 1 to jump website, when exist and not all be itself 1 jump website when, using the transmission power threshold value no more than setting
Maximum transmission power sends the acknowledgement frame that response is carried out to the mac frame.
16. the method as described in claim 1, which is characterized in that the method for carrying out response to the mac frame, further includes:
When it is described to be sent to website not be targeted sites when, send forwarding frame to website thereafter while sending acknowledgement frame.
17. a kind of communication site characterized by comprising
Receiving module, the mac frame sent for receiving transmitting website, carries at least two address for servicees in the mac frame,
In, each address for service corresponds to different starting response times；
Responder module reaches Target Station for if it is determined that carry the address of itself in the mac frame received, determining that itself exists
The path of point, and being not detected in channel when the starting response time of itself expires has other websites to make the mac frame
Response, then carry out response to the mac frame.
18. communication site as claimed in claim 17, which is characterized in that the responder module is specifically used for:
According to the address for service in mac frame putting in order in all address for servicees, determine corresponding to each address for service
The starting response time for being sent to website.
19. communication site as claimed in claim 17, which is characterized in that the responder module is specifically used for:
According to the targeted sites address for including in the mac frame received, searched in the adjacent bus station list of self maintained
The targeted sites address determines that itself has the path for reaching targeted sites when searching the targeted sites address；It is no
Then, determining itself, there is no the paths for reaching targeted sites.
20. communication site as claimed in claim 17, which is characterized in that the responder module is also used to:
Itself is judged with the presence or absence of the path reached by the website on transmitting website to targeted sites path, when it is present, to institute
It states mac frame and carries out response.
21. communication site as claimed in claim 20, which is characterized in that the responder module is specifically used for:
According to the path by transmitting website to targeted sites for including in the mac frame received, in the neighbouring of self maintained
Website in site list in searching route determines that itself has the path for reaching website on the path when searching；It is no
Then, determining itself, there is no the paths for reaching website on the path.
22. communication site as claimed in claim 17, which is characterized in that the responder module is specifically used for:
Judge in the mac frame that receives with the presence or absence of starting response time behind be sent to website, if it exists whether all
Itself 1 to jump website, when exist and not all be itself 1 jump website when, using the transmission power threshold value no more than setting
Maximum transmission power sends the acknowledgement frame that response is carried out to the mac frame.
23. communication site as claimed in claim 17, which is characterized in that the responder module is specifically used for:
After the receiving module receives the mac frame, judged whether by whether occurring signal transmission in detection channel
There are other websites to make response to the mac frame.
24. the communication site as described in claim 17-23 is any, which is characterized in that further include:
Sending module carries at least two address for servicees for sending mac frame in the mac frame, wherein each address for service
Corresponding different starting response time.
25. a kind of multi-hop link communication system characterized by comprising at least three as described in claim 17-24 is any
Communication site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310213834.6A CN103260209B (en) | 2013-05-31 | 2013-05-31 | Implementation method, system and the communication site that multi-hop data transmits in wireless network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310213834.6A CN103260209B (en) | 2013-05-31 | 2013-05-31 | Implementation method, system and the communication site that multi-hop data transmits in wireless network |
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