CN104507175B - A kind of method of WIA PA network hand-holds equipment Network with Random Multiple Access System - Google Patents
A kind of method of WIA PA network hand-holds equipment Network with Random Multiple Access System Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
- H04W74/0891—Non-scheduled access, e.g. ALOHA using a dedicated channel for access for synchronized access
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Abstract
The present invention relates to a kind of method of WIA PA network hand-holds equipment Network with Random Multiple Access System, belong to industrial wireless communication technical field.This method comprises the following steps：Handheld device to be networked monitors the beacon frame sent in net routing device or gateway device；Select cluster head, deadline synchronization；Handheld device selection random access guiding to be networked, triggers random access procedure, the random access guiding is generated by random access guiding generation module by MAC；After cluster head receives random access guiding, its legitimacy is judged, forward legal random access guiding to network manager and Secure Manager；Network manager and Secure Manager receive random access guiding, and accidental access response is provided after carrying out safety verification；After cluster head receives accidental access response, the response is forwarded to handheld device to be networked；Handheld device finally to be networked is responded by accessing, and judges whether to be successfully accessed network.This method can effectively improve the networking efficiency of WIA PA handheld devices and the utilization rate of Internet resources.
Description
Technical field
The invention belongs to industrial wireless communication technical field, is related to a kind of WIA-PA network handheld device Network with Random Multiple Access System
Method.
Background technology
With the fast development of information technology, it is new that industry wireless network technology turns into the automatic field after fieldbus
Study hotspot.Industry wireless network technology is so that its flexibility is strong, autgmentability is strong, cost is low, energy consumption is low and can be applied to dislike
The features such as bad industrial environment, the cost of investment and use cost of industry measurement and control system can be effectively reduced, is greatly expanded
The application of industry measurement and control system.
In October, 2011, turn into important in International Industry wireless technical field by the WIA-PA standards of China's independent research
One of standard criterion, be mainly used in technical process measurement, monitoring and control, have very strong antijamming capability, super low energy consumption and
The technical characteristics such as real-time Communication for Power.WIA-PA network is mainly by main control computer, gateway device, routing device, field apparatus and hand
The class physical equipment of holding equipment 5 is formed.At present, domestic many researchers set to various in addition to handheld device in WIA-PA network
The standby substantial amounts of research carried out, and plentiful and substantial achievement in research is obtained, but it is less for the researcher of handheld device, it is especially right
The method of handheld device access WIA-PA network is more the absence of furtheing investigate.However, in WIA-PA network, handheld device can use
In supervision equipment state, configuration device parameter and firmware renewal, it serves as the role of cluster member, can add network and other at random
Equipment is communicated so that the monitoring and management to network are more convenient and perfect.
Existing WIA-PA standards define handheld device enter network process and field apparatus enter that network process is identical, and this makes to go smoothly
Holding equipment enter network process take it is long.Moreover, prior art directly turns after cluster head receives the networking request of handheld device
Hair networks request, and not in view of the legitimacy of networking request, have that illegal networking request constantly transmits in a network can
Energy property, causes the waste of Internet resources.
The content of the invention
In view of this, it is an object of the invention to provide a kind of side of WIA-PA network handheld device Network with Random Multiple Access System
Method, for improving the networking efficiency of WIA-PA handheld devices and the utilization rate of Internet resources.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of method of WIA-PA network handheld device Network with Random Multiple Access System, comprises the following steps：
Step 1：Handheld device to be networked persistently monitors the available channel in WIA-PA network, obtains at networking by setting
The beacon frame that standby or gateway device is sent；
Step 2：Handheld device to be networked selects to send some routing device of beacon frame or gateway device as cluster
Head, deadline are synchronous；
Step 3：Handheld device to be networked triggers random access procedure by media access control MAC, first, selection
Random access guiding, then send the random access guiding to cluster head when channel idle；
Step 4：After cluster head detects random access guiding, random access guiding is parsed, judges the random access guiding
Legitimacy, the networking is forwarded to ask to network manager and Secure Manager if legal；Conversely, then abandon the Stochastic accessing
It is leading；
Step 5：Network manager and Secure Manager receive the random access guiding forwarded by cluster head, by parsing with
Machine access lead, safety verification is carried out, provides accidental access response；
Step 6：After the handheld device to network sends random access guiding, accidental access response is detected, receives and connects at random
After entering response, judge whether to be successfully accessed according to relevant parameter in accidental access response；Or at the appointed time, do not receive
To accidental access response, then this Stochastic accessing is judged as access failure, initiates Stochastic accessing again, until be successfully accessed or
Person's sending times are equal to maximum reattempt times.
Further, in step 5, specifically include：If the handheld device of sent out random access guiding is legitimate device,
By the safety verification of Secure Manager, network manager provides accidental access response, and is set by WIA-PA network to described
Preparation send accidental access response；Conversely, abandon the random access guiding.
Further, the parameter included in random access guiding includes：Globally unique 64 long addresses of the handheld device,
The sending times of random access procedure and the life span of the random access guiding.
Further, cluster head includes validity judgement module, for judging the legitimacy of random access guiding.
Further, the handheld device includes random access guiding generation module, and the module is present in WIA-PA protocol stacks
High level, random access guiding is generated by it, this is leading to have high autocorrelation performance, low cross correlation, constant amplitude and ebb
Than feature, to increase the detection probability of cluster head, and the misunderstanding probability of cluster head is reduced；Described random access guiding generation module
Permanent envelope zero auto-correlation (Constant Amplitude Zero Auto Correlation, CAZAC) sequence can be used real
It is existing, such as sequence can be chosen any one kind of them to generate in Zadoff-Chu sequence, Frank sequences, Golomb sequences and Chirp sequences
Described random access guiding.
Further, the handheld device includes time block, for triggering Stochastic accessing mistake from handheld device to be networked
Start timing during journey.
Further, the handheld device includes judge module, for judge handheld device whether setting preset time
Accidental access response is inside received, if it is not, this random access procedure then is judged as into access failure；Conversely, carry out subsequent treatment
Step.
Further, described judge module, it is additionally operable to judge that can accidental access response that handheld device receives allow hand
Holding equipment is successfully accessed network, if it is not, this random access procedure then is judged as into access failure；Conversely, it is successfully accessed.
Further, described judge module, it is additionally operable to judge the maximum allowable mistake whether access failure number is equal to setting
Number is lost, if it is not, then initiating access procedure again in channel idle；Conversely, then being reported to upper strata, handled by upper strata.
The beneficial effects of the present invention are：The side of WIA-PA network handheld device Network with Random Multiple Access System of the present invention
Method, the networking efficiency of WIA-PA handheld devices and the utilization rate of Internet resources can be significantly improved.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carried out
Explanation：
Fig. 1 is the procedure chart of WIA-PA network handheld device Stochastic accessing gateway device in embodiment；
Fig. 2 is the procedure chart of WIA-PA network handheld device Stochastic accessing routing device in embodiment；
Fig. 3 is the schematic flow sheet of WIA-PA network handheld device Network with Random Multiple Access System method in embodiment；
Fig. 4 is the structural representation of handheld device in embodiment；
Fig. 5 is the structural representation of cluster head in embodiment.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
In WIA-PA network, handheld device to be networked can add WIA-PA nets by gateway device and routing device
Network, its process is as depicted in figs. 1 and 2.
Fig. 1 is the process for the WIA-PA network handheld device Stochastic accessing gateway device that the present embodiment provides, including：
Step 101：Handheld device to be networked persistently monitors the available channel in WIA-PA network, obtain networking by or
The beacon frame that gateway device is sent；
Step 102：The gateway device that handheld device selection to be networked sends beacon frame is same as cluster head, deadline
Step；
Step 103：Handheld device to be networked triggers random access procedure by media access control MAC, and selection is random
Access lead, and send the random access guiding to gateway device when channel idle；
Step 104：After gateway device detects random access guiding, the legitimacy of random access guiding is parsed, if closed
Rule forwards the random access guiding to network manager；Conversely, then abandon the random access guiding；
Step 105：After the random access guiding that Secure Manager receives, by parsing random access guiding, pacified
Full checking.Specifically include, the equipment for sending out random access guiding is legitimate device, then safety verification success；Conversely, safety verification
Failure, abandons the access request.Wherein, the random access guiding that Secure Manager receives is forwarded by network manager,
And the communication mode between Secure Manager and network manager does not provide；
Step 106：After safety verification success, accidental access response is sent by network manager；
Step 107：After gateway device receives accidental access response, rung to handheld device forwarding Stochastic accessing to be networked
Should；
Step 108：Handheld device to be networked detects accidental access response, according to relevant parameter in accidental access response
Judge whether to be successfully accessed；Or at the appointed time, do not receive accidental access response, then this Stochastic accessing is judged
For access failure, Stochastic accessing is initiated again, until being successfully accessed or sending times are equal to maximum reattempt times.
Fig. 2 is the process for the WIA-PA network handheld device Stochastic accessing routing device that the present embodiment provides, including：
Step 201：Handheld device to be networked persistently monitors the available channel in WIA-PA network, obtain networking by or
The beacon frame that gateway device is sent；
Step 202：Handheld device selection to be networked send beacon frame in net routing device as cluster head, deadline
It is synchronous；
Step 203：Handheld device to be networked triggers random access procedure by media access control MAC, and selection is random
Access lead, and send the random access guiding in net routing device when channel idle；
Step 204：After net routing device detects random access guiding, the legitimacy of random access guiding is parsed, such as
Fruit is legal, and the random access guiding is forwarded to mesh network；Conversely, then abandon the random access guiding；
Step 205：Mesh network forwards the random access guiding to network manager；
Step 206：After the random access guiding that Secure Manager receives, by parsing random access guiding, pacified
Full checking.Specifically include, the equipment for sending out random access guiding is legitimate device, then safety verification success；Conversely, safety verification
Failure, abandons the access request.Wherein, the random access guiding that Secure Manager receives is forwarded by network manager,
And the communication mode between Secure Manager and network manager does not provide；
Step 207：After safety verification success, accidental access response is sent by network manager, and send to mesh network
The accidental access response；
Step 208：Mesh network at networking by the device forwards accidental access response；
Step 209：After net routing device receives accidental access response, connect at random to handheld device forwarding to be networked
Enter response；
Step 2010：Handheld device to be networked detects accidental access response, is joined according to related in accidental access response
Number judges whether to be successfully accessed；Or at the appointed time, do not receive accidental access response, then this Stochastic accessing is sentenced
Break as access failure, initiate Stochastic accessing again, until being successfully accessed or sending times are equal to maximum reattempt times.
Wherein, step 103 and the random access guiding mentioned in step 203, by the random access guiding of handheld device
Generation module generates, and the module is present in WIA-PA higher level protocol suites, is generated by it random access guiding, and this is leading should to have height
Autocorrelation performance, low cross correlation, constant amplitude and low peak average ratio feature, to increase the detection probability of cluster head, and reduce cluster
First misunderstanding probability.Described random access guiding generation module can use permanent envelope zero auto-correlation (Constant
Amplitude Zero Auto Correlation, CAZAC) sequence realization, such as can be in Zadoff-Chu sequence, Frank sequences
Sequence is chosen any one kind of them to generate described random access guiding in row, Golomb sequences and Chirp sequences.And the Stochastic accessing
The following parameter that should be included in leading：The repeating transmission of globally unique 64 long addresses, random access procedure of the handheld device
The life span of number and the random access guiding.In addition, handheld device should also contain time block, for from hand to be networked
Holding equipment starts timing when triggering random access procedure.
Wherein, in step 104 and step 204, cluster head, cluster head inspection are served as by gateway device and in net routing device respectively
After measuring random access guiding, the legitimacy of random access guiding is parsed by validity judgement module.
In addition, in step 108 and step 2010, handheld device to be networked needs to judge whether Stochastic accessing succeeds,
Then handheld device to be networked need to include judge module, and the module has following three kinds of effects：
1) it is used to judge whether handheld device in the preset time of setting receives accidental access response, if it is not, then by this
Secondary random access procedure is judged as access failure；Conversely, carry out subsequent processing steps.
2) it is used to judge that can the accidental access response that handheld device receives allow handheld device to be successfully accessed network, if
It is no, then this random access procedure is judged as access failure；Conversely, it is successfully accessed.
3) it is used for the maximum allowable frequency of failure for judging whether access failure number is equal to setting, if it is not, then empty in channel
Idle, access procedure is initiated again；Conversely, then being reported to upper strata, handled by upper strata.
Fig. 3 is the simply and easy treat process for the WIA-PA network handheld device Network with Random Multiple Access System method that the present embodiment provides,
Including：
Step 301：Handheld device to be networked persistently monitors the available channel in WIA-PA network, obtains at networking by setting
The beacon that standby or gateway device is sent；
Step 302：Handheld device selection to be networked send beacon some networking by or gateway device as cluster head,
Deadline is synchronous；
Step 303：The step is divided into following sub-step：
Step 3031：Judge whether access failure number is less than the maximum allowable frequency of failure of setting by judge module,
If judged result is less than handheld device to be networked triggers random access procedure by media access control MAC；Conversely,
Report to upper strata, handled by upper strata；
Step 3032：Time block also begins to work；
Step 3033：Judge module is additionally operable to judge whether handheld device in the preset time of setting receives Stochastic accessing
Response, if it is not, this random access procedure then is judged as into access failure；Conversely, enter in next step；
Step 3034：Using judge module judge accidental access response that handheld device receives can allow handheld device into
Work(accesses network, if it is not, this random access procedure then is judged as into access failure；Conversely, it is successfully accessed.
Step 304：Cluster head forwards legal random access guiding, and cluster head is served as by gateway or in net routing device；
Step 305：Legal random access guiding is forwarded by WIA-PA network other equipment.The step is due to serving as cluster
First equipment is different, has and a little distinguishes, specific as follows：
1) cluster head is gateway device, then gateway device directly forwards legal random access guiding to network manager；
2) cluster head is that then being needed in net routing device should to network manager forwarding by mesh network in net routing device
Random access guiding.
Step 306：Secure Manager parses random access guiding, carries out safety certification, safety verification success, then by network
Manager provides accidental access response；
Step 307：Accidental access response is forwarded by WIA-PA network other equipment.The step is due to serving as setting for cluster head
It is standby different, have and a little distinguish, it is specific as follows：
1) cluster head is gateway device, then network manager directly forwards legal access to respond to gateway device；
2) cluster head is in net routing device, then network manager is needed by mesh network to should by device forwards at networking
Access response.
Step 308：Handheld device to be networked detects accidental access response, according to relevant parameter in accidental access response
Judge whether to be successfully accessed；Or at the appointed time, do not receive accidental access response, then this Stochastic accessing is judged
For access failure, Stochastic accessing is initiated again, until being successfully accessed or sending times are equal to maximum reattempt times.
Fig. 4 is the structural representation of handheld device provided in an embodiment of the present invention, as shown in figure 4, to hold WIA-PA
The method that equipment supports handheld device Stochastic accessing WIA-PA network proposed by the present invention, WIA-PA handheld devices need to include with
Lower module：Random access guiding generation module 401, time block 402, judge module 403 and radio receiving transmitting module 404.Wherein,
Random access guiding generation module 401 is present in WIA-PA higher level protocol suites, and random access guiding is generated by the module；Timing mould
Block, for since the timing wait when the handheld device to network triggers random access procedure；Judge module 403, for judging to hold
Whether equipment in the preset time of setting receives accidental access response, is also used for judging the Stochastic accessing that handheld device receives
Can response allow handheld device to be successfully accessed network, be additionally operable to judge the maximum allowable mistake whether access failure number is equal to setting
Lose number；Radio receiving transmitting module 404 is used to send random access guiding and receives access response.
Fig. 5 is the structural representation of cluster head provided in an embodiment of the present invention, as shown in figure 5, to make cluster head support the present invention
The method of the handheld device Stochastic accessing WIA-PA network of proposition, cluster head needs to include with lower module in WIA-PA network：It is legal
Property judge module 501 and radio receiving transmitting module 502, as shown in Figure 5.Wherein, validity judgement module is used to judge Stochastic accessing
Leading legitimacy；Radio receiving transmitting module 502 is used to receiving and forwarding random access guiding, and receives and forward access to ring
Should.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art that can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (8)
- A kind of 1. method of WIA-PA network handheld device Network with Random Multiple Access System, it is characterised in that：Comprise the following steps：Step 1：Handheld device to be networked persistently monitors the available channel in WIA-PA network, obtain in net routing device or The beacon frame that gateway device is sent；Step 2：Handheld device to be networked selects to send some routing device of beacon frame or gateway device as cluster head, complete Into time synchronized；Step 3：Handheld device to be networked triggers random access procedure by media access control MAC, and first, selection is random Access lead, then send the random access guiding to cluster head when channel idle；Step 4：After cluster head detects random access guiding, random access guiding is parsed, judges the legal of the random access guiding Property, forward the random access guiding to network manager and Secure Manager if legal；Conversely, then abandon the Stochastic accessing It is leading；Step 5：Network manager and Secure Manager receive the random access guiding forwarded by cluster head, are connect at random by parsing Enter it is leading, carry out safety verification, provide accidental access response；Step 6：After the handheld device to network sends random access guiding, accidental access response is detected, receives Stochastic accessing sound Ying Hou, judge whether to be successfully accessed according to relevant parameter in accidental access response；Or at the appointed time, do not receive with Machine access response, then be judged as access failure by this Stochastic accessing, initiate Stochastic accessing again, up to being successfully accessed or again Hair number is equal to maximum reattempt times；The handheld device includes random access guiding generation module, and the module is present in WIA-PA higher level protocol suites, by its life Into random access guiding, this is leading to have high autocorrelation performance, low cross correlation, constant amplitude and low peak average ratio feature, with Increase the detection probability of cluster head, and reduce the misunderstanding probability of cluster head.
- A kind of 2. method of WIA-PA network handheld device Network with Random Multiple Access System according to claim 1, it is characterised in that： In step 5, specifically include：If the handheld device of sent out random access guiding is legitimate device, pass through Secure Manager Safety verification, network manager provides accidental access response, and sends Stochastic accessing to the equipment by WIA-PA network and ring Should；Conversely, abandon the random access guiding.
- A kind of 3. method of WIA-PA network handheld device Network with Random Multiple Access System according to claim 1, it is characterised in that： The parameter included in random access guiding includes：Globally unique 64 long addresses of the handheld device, random access procedure The life span of sending times and the random access guiding.
- A kind of 4. method of WIA-PA network handheld device Network with Random Multiple Access System according to claim 1, it is characterised in that： Cluster head includes validity judgement module, for judging the legitimacy of random access guiding.
- A kind of 5. method of WIA-PA network handheld device Network with Random Multiple Access System according to claim 1, it is characterised in that： The handheld device includes time block, for since the timing wait when the handheld device to network triggers random access procedure.
- A kind of 6. method of WIA-PA network handheld device Network with Random Multiple Access System according to claim 1, it is characterised in that： The handheld device includes judge module, is rung for judging whether handheld device receives Stochastic accessing in the preset time of setting Should, if it is not, this random access procedure then is judged as into access failure；Conversely, carry out subsequent processing steps.
- A kind of 7. method of WIA-PA network handheld device Network with Random Multiple Access System according to claim 6, it is characterised in that： Described judge module, it is additionally operable to judge that can the accidental access response that handheld device receives allow handheld device to be successfully accessed net Network, if it is not, this random access procedure then is judged as into access failure；Conversely, it is successfully accessed.
- A kind of 8. method of WIA-PA network handheld device Network with Random Multiple Access System according to claim 6, it is characterised in that： Described judge module, it is additionally operable to judge the maximum allowable frequency of failure whether access failure number is equal to setting, if it is not, then existing During channel idle, access procedure is initiated again；Conversely, then being reported to upper strata, handled by upper strata.
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| CN101873591A (en) * | 2010-05-31 | 2010-10-27 | 西安电子科技大学 | Wireless sensor network switching and pre-authenticating method based on evaluation |
| WO2012014008A1 (en) * | 2010-07-30 | 2012-02-02 | Abb Research Ltd | A method and a system for localization in industrial wireless sensor network |
| CN102404726A (en) * | 2011-11-18 | 2012-04-04 | 重庆邮电大学 | Distributed control method for information of accessing internet of things by user |
| CN102548001A (en) * | 2012-03-01 | 2012-07-04 | 重庆邮电大学 | Coexistence method for WIA-PA network and IEEE 802.15.4 network |
| CN103888940A (en) * | 2012-12-19 | 2014-06-25 | 中国科学院沈阳自动化研究所 | Multi-level encryption and authentication type WIA-PA network handheld device communication method |
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| CN101873591A (en) * | 2010-05-31 | 2010-10-27 | 西安电子科技大学 | Wireless sensor network switching and pre-authenticating method based on evaluation |
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| CN102404726A (en) * | 2011-11-18 | 2012-04-04 | 重庆邮电大学 | Distributed control method for information of accessing internet of things by user |
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