CN104301313B - A kind of method and convergence device for extending sensing network life cycle using caching - Google Patents
A kind of method and convergence device for extending sensing network life cycle using caching Download PDFInfo
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- CN104301313B CN104301313B CN201410509509.9A CN201410509509A CN104301313B CN 104301313 B CN104301313 B CN 104301313B CN 201410509509 A CN201410509509 A CN 201410509509A CN 104301313 B CN104301313 B CN 104301313B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
Abstract
The embodiments of the invention provide a kind of method and convergence device for extending sensing network life cycle using caching, it is related to sensor network field, can reduces power consumption in the case of high-frequency exterior I nternet access, extend the life cycle of sensing network.The convergence device includes access processing module, the information for the data asked for receiving and parsing through out access request；Whether control module, the information for inquiring about asked data to cache policy module meet the requirement of cache policy, and when the information for the data asked meets the requirement of cache policy, asked data are directly obtained from spatial cache management module；When the data asked do not meet the requirement of cache policy, instruction is sent to sensor node by sensor node communication module and obtains real time data；The spatial cache management module, for storing cache policy corresponding to various data and various data.
Description
Technical field
The present invention relates to sensor network field, more particularly to a kind of side for extending sensing network life cycle using caching
Method and convergence device.
Background technology
Sensing network is commonly defined as a large amount of of random placement and is integrated with sensor, data processing unit and communication unit
Microsensor node, the wireless network formed by way of self-organizing, these microsensor nodes are mostly by battery
Power supply.When sensing network is specifically deployed in a region, these pass through biography by battery powered microsensor node
Sensor can perceive, detect the information of surrounding environment, e.g., obtain the data such as temperature, humidity, illumination, vibration, pass through data processing
The calculating processing of unit, then sends, self-organizing of these information in these microsensor nodes via communication unit
The convergence device (gateway, aggregation node, aggregation gateway) of a sustainable power supply is ultimately transmitted under management.When a use
When the user of network needs to access the real time data of these microsensor nodes acquisition in Internet some position, this
Access request arrives first at convergence device, and convergence device retransmits instruction and arrives these microsensor nodes, works as microsensor
Node gets and this real time data is finally transferred into convergence device after real time data, and convergence device is to accessing this number in real time
According to user's returning result, access process terminates.In the case of using battery powered, when more using the number of users of network
When, the real time data of frequent visit sensing network will allow these microsensor nodes, and high load capacity works always, battery electricity
Amount accelerates to reduce, and sensing network life cycle greatly shortens.
Because sensor node is battery powered in actual deployment, therefore after sensing network uses a period of time
Battery must be manually changed, when deployed environment people can not reach and (such as be encapsulated in concrete duct), it is necessary to reduce battery more
Frequency is changed, extends sensing network life cycle to greatest extent, existing solution method is by microsensor node
The software optimization of operation causes data processing unit increase calculating task to reach overall to exchange the workload of reduction communication unit for
Electric quantity consumption is minimum, but life of such strategy in the case of high-frequency exterior I nternet access to extension sensing network
The effect very little in cycle is ordered, because the electric quantity consumption that exterior I nternet access requests are brought each time is relative to sensor
The reduced electric quantity consumption of node software optimization is much more, so frequently Internet access will allow sensor node electricity quick
Consumption.
The content of the invention
Embodiments of the invention provide a kind of method and convergence device for extending sensing network life cycle using caching, can
In the case of high-frequency exterior I nternet access, to reduce power consumption, extend the life cycle of sensing network.
To reach above-mentioned purpose, embodiments of the invention adopt the following technical scheme that：
A kind of convergence device, including：
Access processing module, the access request initiated for receiving user to sensor node, parsing the access please
Seek the information of asked data；
Whether control module, the information for inquiring about the data that the access request is asked to cache policy module meet
The requirement of cache policy；
The cache policy module, for storing cache policy corresponding to each data message and each data message,
And judge whether the information of asked data meets the requirement of cache policy, wherein, the cache policy requires to include：Branch
Hold caching and in the caching term of validity；The cache policy includes：Whether support caches；If support caching, the caching of data
Whether the term of validity fixes or variable；If the caching term of validity of data is fixed, according to the ground of industry standard and deployment region
Feature is managed, weather conditions set the fixed term of validity；If the caching term of validity of data is variable, according to different factor arrangements
Variable term of validity rule table sets the variable term of validity；Whether exist with other data and associate validity, i.e., a variety of data it is effective
Property it is synchronous change, if a kind of data must not also cache effectively not when caching in the term of validity with a variety of data that it associate
In phase；
The control module, it is additionally operable to, when the information for the data asked meets the requirement of cache policy, directly postpone
Deposit space management module and obtain asked data；When the data asked do not meet the requirement of cache policy, pass through sensing
Device node communication module sends instruction to sensor node and obtains real time data, and reaches sensor node in the real time data
During communication module, the corresponding cache policy of the information of the real time data is set in the cache policy module, and presses
It is deposited into according to cache policy of the real time data in cache policy module in spatial cache management module, while by described in
Real time data transfers to access processing module to return to user；
The spatial cache management module, for storing cache policy corresponding to various data and various data；
Sensor node communication module, for being communicated between sensor node.
A kind of method for extending sensing network life cycle using caching, including：
The access request that user initiates to sensor node is received, and parses the data that the access request is asked
Information；
Whether the information that asked data are inquired about to cache policy module meets the requirement of cache policy, the caching plan
Slightly module includes：Cache policy corresponding to each data message and each data message；The requirement bag of the cache policy
Include：Support caching and in the caching term of validity；The cache policy includes：Whether support caches；If supporting caching, data
Whether the caching term of validity fixes or variable；If the caching term of validity of data is fixed, according to industry standard and deployment region
Geographical feature, weather conditions set the fixed term of validity；If the caching term of validity of data is variable, according to different factors
Arrange variable term of validity rule table that the variable term of validity is set；Whether exist with other data and associate validity, i.e., a variety of data
Validity synchronously changes, if a kind of data must not also not cache when caching in the term of validity with a variety of data that it is associated
In the term of validity；
If met the requirements, data are directly obtained from spatial cache, return result to user；The spatial cache pipe
Reason module includes cache policy corresponding to data and data；
If undesirable, real time data corresponding to instruction acquisition is sent to sensor node, and receiving
The information of the real time data corresponding cache policy is set when stating real time data in the cache policy module, and pressed
It is deposited into according to cache policy of the real time data in cache policy module in spatial cache management module, while by described in
Real time data returns to user.
Above-mentioned technical proposal, by increasing cache policy and spatial cache in convergence device, from the frequent of outside
When Internet is had access to up to convergence device, by the processing of cache policy, will have substantial amounts of access is actually according to caching
Strategy obtains from spatial cache, and the data in the data cached term of validity are directly returned to user, and need not access biography
Sensor node, this accesses the number of sensor node in sensing network, the electric quantity consumption pole of sensor node by greatly reducing
The earth is reduced, and network lifecycle is extended；Simultaneously as cache policy can obtain number from the spatial cache of convergence device
According to user is returned to, this Consumer's Experience of the access feedback speed of user can also be greatly enhanced.
Brief description of the drawings
Fig. 1 is a kind of structured flowchart of convergence device provided in an embodiment of the present invention；
Fig. 2 is that the browsing process that a kind of user provided in an embodiment of the present invention is carried out when exterior I nternet is accessed is illustrated
Figure；
Fig. 3 is a kind of method for extending sensing network life cycle using caching provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The present invention implements to provide a kind of convergence device, as shown in figure 1, the convergence device includes：Control module 10, visit
Ask processing module 11；Cache policy module 12；Spatial cache management module 13；Sensor node communication module 14.
With reference to shown in figure 2, browsing process figure when exterior I nternet is accessed is carried out for user, user can pass through
Internet accesses the real time data of some sensor node in sensing network, and Client-initiated access request can be set by accessing
It is standby to reach convergence device.
Access processing module 11 in the convergence device, please for receiving the access that user initiates to sensor node
Ask, and parse the information for the data that the access request is asked.
Control module 10, for inquiring about what the access request was asked to cache policy module according to the data message
Whether the information of data meets the requirement of cache policy.
Cache policy corresponding to each data message and each data message is stored in the cache policy module 12, this
Sample it may determine that whether the information for going out asked data meets the requirement of cache policy, wherein, the cache policy will
Ask including：Support caching and in the caching term of validity.
Here the cache policy includes：Whether support caches；If supporting caching, whether the caching term of validity of data
It is fixed or variable；If the caching term of validity of data is fixed, according to industry standard and the geographical feature of deployment region, weather
The term of validity that condition setting is fixed；If the caching term of validity of data is variable, the variable term of validity is arranged according to different factors
Rule table sets the variable term of validity；Whether existing with other data and associate validity, i.e., the validity of a variety of data synchronously changes,
If a variety of data that a kind of data associate not when caching in the term of validity with it also must not be in the caching term of validity.I.e. here
Cache policy be exactly：Whether support caches, and the term of validity cached is how many.
The control module 10, be additionally operable to when the information for the data asked meets the requirement of cache policy, directly from
Spatial cache management module 13 obtains asked data；When the data asked do not meet the requirement of cache policy, pass through
Sensor node communication module 14 sends instruction to sensor node and obtains real time data, and reaches and sense in the real time data
During device node communication module 14, the corresponding caching of the information of the real time data is set in the cache policy module 12
Strategy, and it is deposited into spatial cache management module 13 according to cache policy of the real time data in cache policy module 12
In, while transfer to access processing module 11 to return to user the real time data.
The spatial cache management module 13, for storing cache policy corresponding to various data and various data.
When the space that the data that spatial cache management module 13 is deposited take exceedes the size that convergence device allows, release be not cached with
The space that data in the effect phase take.
Sensor node communication module 14, for being communicated between sensor node.
The embodiments of the invention provide a kind of method for extending sensing network life cycle using caching, as shown in figure 3, institute
The method of stating comprises the following steps：
301st, the access request that user initiates to sensor node is received, and parses the number that the access request is asked
According to information.
Whether the information that asked data the 302nd, are inquired about to cache policy module meets the requirement of cache policy.
Wherein, the cache policy module includes：Caching plan corresponding to each data message and each data message
Slightly；The cache policy requires to include：Support caching and in the caching term of validity；The cache policy includes：Whether support
Caching；If supporting caching, whether the caching term of validity of data fixes or variable；If the caching term of validity of data is fixed,
The fixed term of validity then is set according to industry standard and the geographical feature of deployment region, weather conditions；If data are cached with
The effect phase is variable, then arranges variable term of validity rule table to set the variable term of validity according to different factors；Whether deposited with other data
In association validity, i.e., the validity of a variety of data synchronously changes, if a kind of data are not closed when caching in the term of validity with it
A variety of data of connection also must not be in the caching term of validity；
If met the requirements, step 303 is carried out, if undesirable, carries out step 304.
303rd, data are directly obtained from spatial cache, return result to user；Wrapped in the spatial cache management module
Include cache policy corresponding to data and data.
304th, to sensor node send instruction obtain corresponding to real time data, and when receiving the real time data
The information of the real time data corresponding cache policy is set in the cache policy module, and according to the real time data
Cache policy in cache policy module is deposited into spatial cache management module, while the real time data is returned to
User.
Wherein, the size that convergence device allows is exceeded in the space that the data deposited in spatial cache management module take
When, the space of data occupancy of the release not in the caching term of validity.
Technical scheme provided in an embodiment of the present invention, by increasing cache policy and spatial cache in convergence device, come
When having access to from the frequent Internet of outside up to convergence device, by the processing of cache policy, there will be substantial amounts of access actual
On be to be obtained according to cache policy from spatial cache, the data in the data cached term of validity are directly returned to user, and
Access sensors node is not needed, this accesses the number of sensor node in sensing network, sensor node by greatly reducing
Electric quantity consumption greatly reduce, network lifecycle is extended；Simultaneously as cache policy can be from the slow of convergence device
Deposit space acquisition data and return to user, this Consumer's Experience of the access feedback speed of user can also be greatly enhanced.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (4)
- A kind of 1. convergence device, it is characterised in that including：Access processing module, the access request initiated for receiving user to sensor node, parse the access request institute The information of the data of request；Whether control module, the information for inquiring about the data that the access request is asked to cache policy module meet caching The requirement of strategy；The cache policy module, for storing cache policy corresponding to each data message and each data message, and sentence Whether the information of disconnected asked data meets the requirement of cache policy, wherein, the cache policy requires to include：Support slow Deposit and in the caching term of validity；The cache policy includes：Whether support caches；If supporting caching, the caching of data is effective Whether the phase is fixed or variable；If the caching term of validity of data is fixed, the geography according to industry standard and deployment region is special Weather conditions of seeking peace set the fixed term of validity；, can according to different factor arrangements if the caching term of validity of data is variable Become term of validity rule table and the variable term of validity is set；Whether exist with other data and associate validity, i.e., the validity of a variety of data Synchronous change, if a variety of data that a kind of data associate not when caching in the term of validity with it also must not be in the caching term of validity It is interior；The control module, it is additionally operable to when the information for the data asked meets the requirement of cache policy, it is directly empty from caching Between management module obtain asked data；When the data asked do not meet the requirement of cache policy, pass through sensor section Point communication module sends instruction to sensor node and obtains real time data, and reaches sensor node communication in the real time data During module, the corresponding cache policy of the information of the real time data is set in the cache policy module, and according to institute Cache policy of the real time data in cache policy module is stated to be deposited into spatial cache management module, while will be described real-time Data transfer to access processing module to return to user；The spatial cache management module, for storing cache policy corresponding to various data and various data；Sensor node communication module, for being communicated between sensor node.
- 2. convergence device according to claim 1, it is characterised in that the spatial cache management module is additionally operable to caching When the space that the data of space management module storage take exceedes the size that convergence device allows, release is not in the caching term of validity Data take space.
- A kind of 3. method for extending sensing network life cycle using caching, it is characterised in that including：The access request that user initiates to sensor node is received, and parses the letter for the data that the access request is asked Breath；Whether the information that asked data are inquired about to cache policy module meets the requirement of cache policy, the cache policy mould Block includes：Cache policy corresponding to each data message and each data message；The cache policy requires to include：Branch Hold caching and in the caching term of validity；The cache policy includes：Whether support caches；If support caching, the caching of data Whether the term of validity fixes or variable；If the caching term of validity of data is fixed, according to the ground of industry standard and deployment region Manage the term of validity that feature and weather condition setting are fixed；If the caching term of validity of data is variable, pacify according to different factors Arrange variable term of validity rule table and the variable term of validity is set；Whether exist with other data and associate validity, i.e., a variety of data have Effect property is synchronous to be changed, if a kind of data must not be also cached with when caching in the term of validity with a variety of data that it is associated In the effect phase；If met the requirements, data are directly obtained from spatial cache management module, return result to user；The caching is empty Between management module include cache policy corresponding to data and data；If undesirable, real time data corresponding to instruction acquisition is sent to sensor node, and receiving the reality When data when the corresponding cache policy of the information of the real time data is set in the cache policy module, and according to institute Cache policy of the real time data in cache policy module is stated to be deposited into spatial cache management module, while will be described real-time Data return to user.
- 4. according to the method for claim 3, it is characterised in that in the sky that the data of spatial cache management module storage take Between exceed convergence device allow size when, release caching the term of validity in data take space.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102573021A (en) * | 2010-12-31 | 2012-07-11 | 中兴通讯股份有限公司 | Method and gateway for processing wireless sensor network (WSN) message |
| CN103067497A (en) * | 2012-12-27 | 2013-04-24 | 北京时代凌宇科技有限公司 | System of internet of things |
| CN203039730U (en) * | 2013-01-15 | 2013-07-03 | 陕西延长石油(集团)有限责任公司研究院 | Wisdom oil field ground internet of things system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0321096D0 (en) * | 2003-09-09 | 2003-10-08 | British Telecomm | Hierarchical routing in ad-hoc networks |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102573021A (en) * | 2010-12-31 | 2012-07-11 | 中兴通讯股份有限公司 | Method and gateway for processing wireless sensor network (WSN) message |
| CN103067497A (en) * | 2012-12-27 | 2013-04-24 | 北京时代凌宇科技有限公司 | System of internet of things |
| CN203039730U (en) * | 2013-01-15 | 2013-07-03 | 陕西延长石油(集团)有限责任公司研究院 | Wisdom oil field ground internet of things system |
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