CN110099054A - One kind being based on the efficient TDMA ad hoc network method of bridge - Google Patents
One kind being based on the efficient TDMA ad hoc network method of bridge Download PDFInfo
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- CN110099054A CN110099054A CN201910354288.5A CN201910354288A CN110099054A CN 110099054 A CN110099054 A CN 110099054A CN 201910354288 A CN201910354288 A CN 201910354288A CN 110099054 A CN110099054 A CN 110099054A
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- control message
- cpe
- machine
- bridge
- hoc network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides one kind to be based on the efficient TDMA ad hoc network method of bridge, and the same frequency spectrum at the end AP is divided time slot in time, then gives different cpe ends and uses, and each cpe end can only communicate in the time slot that the end AP is distributed.The beneficial effects of the present invention are: effectively overcoming the problems, such as blind spot.To improve the performance of outdoor bridge.
Description
Technical field
The present invention relates to TDMA ad hoc network methods, more particularly to one kind to be based on the efficient TDMA ad hoc network method of bridge.
Background technique
Outdoor bridge is mounted on remote more, is routed inconvenient area, radio characteristics is utilized to carry out the data transmission of long range.
CPE as shown in Figure 1 is located at remote distance, and (wireless CPE is exactly a kind of wireless terminal accessing device for receiving wifi signal, be may replace
The wireless client devices such as wireless network card), it is Access Point by wireless association AP(AP full name, function is wired
Network is converted to wireless network) end.AP is responsible for forwarding the data from CPE.And multiple spot access needs to follow CSMA/CD(multiple spot
Access carrier monitoring/collision detection) agreement.
The feature that wireless network is different from cable network especially transmits that there are blind spots in remote outdoor bridge.Institute
Blind spot is called as shown in Fig. 2, wherein ABC represents 3 nodes, will be communicated with B in sometime A, C, A and C
Channel is first detected respectively, since in A and C signal no longer range of receiving, there are blind spot situations, they can't detect mutually other side's
Signal then respectively sends the data packet of oneself so they all think that channel is idle at this time, when B node receives
It may collide, lead to communication failure.Largely affect outdoor bridge overall performance.A and C and B is communicated, may
A occur can occupy for a long time with B communication, and the performance so as to cause A, C to B is unbalanced.
Therefore, how to overcome the problems, such as blind spot, improve outdoor bridge performance be those skilled in the art it is urgently to be resolved
Technical problem.
Summary of the invention
In order to solve the problems in the prior art, the present invention provides one kind to be based on the efficient ad hoc network side TDMA of bridge
Method.
The present invention provides one kind to be based on the efficient TDMA ad hoc network method of bridge, in time by the same frequency spectrum at the end AP
Time slot is divided, different cpe ends is then given and uses, each cpe end can only communicate in the time slot that the end AP is distributed.
As a further improvement of the present invention, the end AP is responsible for obtaining cpe end information, and building control message distributes CPE time slot,
Broadcasting Control message, cpe end are responsible for parsing control message, and communication still waits immediately for setting.
As a further improvement of the present invention, the process flow at the end AP is as follows:
S101, starting high-resolution timer；
S102, associated cpe end list is obtained；
S103, cpe end maintenance of information list is established；
S104, user information is obtained from cpe end maintenance of information list；
S105, building control message；
S106, Broadcasting Control message give all cpe ends.
As a further improvement of the present invention, in step s 102, it is obtained in the Software Development Kit wirelessly driven
Associated cpe end list.
As a further improvement of the present invention, in step s 103, cpe end maintenance of information list include active state, etc.
To number and with period discharge record.
As a further improvement of the present invention, increase following steps between step S104, S105: calculating in same period
The flow of cpe end judges whether cpe end is any active ues, if not any active ues, then number is waited to add 1, and judge to wait
Whether number reaches threshold value, if not reaching threshold value, return step S104 will wait number clear if reaching threshold value
Zero, and enter step S105；S105 is then entered step if it is any active ues.
As a further improvement of the present invention, the process flow of cpe end is as follows:
S201, the control message for receiving the end AP；
S202, parsing control message；
S203, judge to control message whether to the machine, if control message is not that the machine is arranged and is in waiting and sentences to the machine
Whether disconnected waiting time is greater than threshold value, if being not more than threshold value, terminates, and if it is greater than threshold value, then the machine permission and AP is arranged
End communication；If control message is to the machine, the machine, which is arranged, to be allowed and AP end communication.
As a further improvement of the present invention, in step S202, parsing control message includes the following contents:
It 1) whether is management message；
2) the proprietary protocol type of matching definition；
3) whether the purpose mac of match control message is the machine；
4) judge whether the machine is associated with higher level AP.
As a further improvement of the present invention, step S203 includes the following contents:
1) control message is accurately identified according to type of message and proprietary protocol type；
2) learn that control message is to the machine or other cpe ends according to purpose mac and the machine mac pairing；
If control message is to the machine, the machine, which is arranged, to be allowed to communicate with AP；
If control message is not, by setting register, to allow the packet buffer of the machine in queue to the machine；
3) maximum time cached is T；
If the time reaches T, the end AP is not still received to the control message of the machine,
The data message cached is then allowed to issue the end AP.
As a further improvement of the present invention, the maximum time of caching is 500ms.
The beneficial effects of the present invention are: through the above scheme, effectively overcoming the problems, such as blind spot.To improve outdoor bridge
Performance.
Detailed description of the invention
Fig. 1 is outdoor bridge schematic diagram in the prior art.
Fig. 2 is blind spot schematic diagram in the prior art.
Fig. 3 is a kind of process flow diagram at the end AP based on the efficient TDMA ad hoc network method of bridge of the present invention.
Fig. 4 is a kind of process flow diagram of the cpe end based on the efficient TDMA ad hoc network method of bridge of the present invention.
Specific embodiment
The invention will be further described for explanation and specific embodiment with reference to the accompanying drawing.
As shown in Figure 3 to Figure 4, a kind of to be based on the efficient TDMA(time division multiple acess of bridge) ad hoc network method, by the same of the end AP
One frequency spectrum divides time slot in time, then gives different cpe ends and uses, the time slot that each cpe end can only distribute at the end AP
Interior communication, cpe end, that is, wireless terminal accessing device, the end AP, that is, wireless access points.
The same one section of frequency spectrum in the end AP is carried out division time slot by this method in time, and then giving different cpe ends makes
With each cpe end can only communicate in the time slot that the end AP is distributed, and can utmostly avoid competing in this way and interfere.It is popular to say
If cpe end, which needs to be lined up, enters room and the talk of the end AP, and the duration of talk is determined by the end AP frequency spectrum metaphor at a room
It is fixed.Other cpe ends that do not called by the end AP can only wait the end AP to call and just allow access into room and the talk of the end AP.In view of whole
Body talk is efficiently smooth, and the end AP can properly adjust talk duration according to cpe end situation, that is to say, that the high cpe end of flow is preferential
It obtains and the number of AP end communication is some more.The very low cpe end of flow, although being discharged to and AP end communication, the power of communication
Benefit cis-position on certain number, which is given, is queued in its subsequent high flow capacity user.
Rationally control AP and CPE communication time slot, that is, solve the problems, such as outdoor bridge blind spot, and effectively avoid certain
CPE long-time busy channel resource, efficiently improves channel utilization, to promote performance of the entire network.
This method realization needs to revise the end AP and cpe end.AP is responsible at end obtaining cpe end information, building control message distribution
CPE time slot, Broadcasting Control message.Cpe end is responsible for parsing control message, and communication still waits immediately for setting.
As shown in figure 3, the process flow at the end AP is as follows
1, starting high-resolution timer precision of timer is higher more accurate to the sequence control of cpe end.
2, from wireless driving sdk(Software Development Kit) inner obtain associated cpe end list.
3, cpe end maintenance of information list, cpe end, that is, client is locally created, cpe end safeguards list, that is, client-side information dimension
Protect chained list.
1) flow of CPE in same period is calculated；
2) judge that cpe end is active state or an inactive state；
Queue of giving out a contract for a project is directly added into if it is active cpe end；
If it is inactive cpe end needing that number is waited to reach threshold value just allows that queue of giving out a contract for a project is added；
3) the waiting decay time of inactive cpe end is recorded；
4, the CPE MAC for allowing to give out a contract for a project is obtained from local cpe end list
5, building control message, the important communication informations such as filling proprietary protocol, purpose mac
6, Broadcasting Control message gives all cpe ends.
As shown in figure 4, the process flow of cpe end is as follows:
1, cpe end receives the control message from the end AP.
2, the control message at the end AP is parsed:
It 1) whether is management message；
2) the proprietary protocol type of matching definition；
3) whether the purpose mac of match control message is the machine；
4) judge whether the machine is associated with higher level AP；
3, time slot of giving out a contract for a project is controlled；
1) control message is accurately identified according to type of message and proprietary protocol type；
2) obtaining control message according to purpose mac and the machine mac pairing is to the machine or other cpe ends.
If control message is to the machine, the machine, which is arranged, to be allowed to communicate with AP.
If control message is not, by setting register, to allow the packet buffer of the machine in queue to the machine.
3) maximum time cached is 500ms.
If the time reaches 500ms, the end AP is not still received to the control message of the machine,
The data message cached is then allowed to issue the end AP.
It is provided by the invention a kind of based on the efficient TDMA ad hoc network method of bridge, it has the advantage that
1, the end AP increases proprietary protocol communication to control cpe end time slot, effectively overcomes the problems, such as blind spot.To improve outdoor net
The performance of bridge.
2, self-adapting estimation cpe end flow rationally controls user's time slot, so that whole network channel utilization reaches most preferably,
To further improve the performance of whole network.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. one kind is based on the efficient TDMA ad hoc network method of bridge, it is characterised in that: draw the same frequency spectrum at the end AP in time
Then time-division slot is given different cpe ends and is used, each cpe end can only communicate in the time slot that the end AP is distributed.
2. according to claim 1 be based on the efficient TDMA ad hoc network method of bridge, it is characterised in that: AP is responsible for acquisition in end
Cpe end information, building control message distribute CPE time slot, Broadcasting Control message, and cpe end is responsible for parsing control message, and setting is immediately
Communication or waiting.
3. according to claim 1 be based on the efficient TDMA ad hoc network method of bridge, which is characterized in that the processing stream at the end AP
Journey is as follows:
S101, starting high-resolution timer；
S102, associated cpe end list is obtained；
S103, cpe end maintenance of information list is established；
S104, user information is obtained from cpe end maintenance of information list；
S105, building control message；
S106, Broadcasting Control message give all cpe ends.
4. according to claim 3 be based on the efficient TDMA ad hoc network method of bridge, it is characterised in that: in step S102
In, associated cpe end list is obtained in the Software Development Kit wirelessly driven.
5. according to claim 3 be based on the efficient TDMA ad hoc network method of bridge, it is characterised in that: in step S103
In, cpe end maintenance of information list includes active state, waits number and with period discharge record.
6. it is according to claim 3 be based on the efficient TDMA ad hoc network method of bridge, it is characterised in that: step S104,
Increase following steps between S105: calculating the flow of cpe end in same period, judge whether cpe end is any active ues, if not
It is any active ues, then number is waited to add 1, and judge to wait whether number reaches threshold value, if not reaching threshold value, returns to step
Rapid S104 will wait number to reset, and enter step S105 if reaching threshold value；It is then entered step if it is any active ues
S105。
7. according to claim 1 be based on the efficient TDMA ad hoc network method of bridge, which is characterized in that the processing of cpe end
Process is as follows:
S201, the control message for receiving the end AP；
S202, parsing control message；
S203, judge to control message whether to the machine, if control message is not that the machine is arranged and is in waiting and sentences to the machine
Whether disconnected waiting time is greater than threshold value, if being not more than threshold value, terminates, and if it is greater than threshold value, then the machine permission and AP is arranged
End communication；If control message is to the machine, the machine, which is arranged, to be allowed and AP end communication.
8. according to claim 7 be based on the efficient TDMA ad hoc network method of bridge, it is characterised in that: in step S202
In, parsing control message includes the following contents:
It 1) whether is management message；
2) the proprietary protocol type of matching definition；
3) whether the purpose mac of match control message is the machine；
4) judge whether the machine is associated with higher level AP.
9. according to claim 7 be based on the efficient TDMA ad hoc network method of bridge, which is characterized in that step S203 includes
The following contents:
1) control message is accurately identified according to type of message and proprietary protocol type；
2) learn that control message is to the machine or other cpe ends according to purpose mac and the machine mac pairing；
If control message is to the machine, the machine, which is arranged, to be allowed to communicate with AP；
If control message is not, by setting register, to allow the packet buffer of the machine in queue to the machine；
3) maximum time cached is T；
If the time reaches T, the end AP is not still received to the control message of the machine,
The data message cached is then allowed to issue the end AP.
10. according to claim 9 be based on the efficient TDMA ad hoc network method of bridge, which is characterized in that the maximum of caching
Time is 500ms.
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| CN201910354288.5A CN110099054B (en) | 2019-04-29 | 2019-04-29 | Efficient TDMA ad hoc network method based on network bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114051267A (en) * | 2021-11-22 | 2022-02-15 | 深圳市吉祥腾达科技有限公司 | Method for optimizing time division multiplexing based on bridge interval |
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Patent Citations (5)
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| US20050122231A1 (en) * | 2003-12-08 | 2005-06-09 | The Regents Of The University Of California | Power efficient wireless system for sensor network |
| CN103686801A (en) * | 2012-09-11 | 2014-03-26 | 中国科学院沈阳自动化研究所 | Redundant AP based industrial wireless network roaming method |
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| CN108419297A (en) * | 2018-01-19 | 2018-08-17 | 京信通信系统（中国）有限公司 | Wireless communications method and radio reception device, network planning equipment, terminal device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110099054B (en) | 2021-08-31 |
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