CN109219022A - A kind of cut-in method of Internet of Things - Google Patents
A kind of cut-in method of Internet of Things Download PDFInfo
- Publication number
- CN109219022A CN109219022A CN201710516151.6A CN201710516151A CN109219022A CN 109219022 A CN109219022 A CN 109219022A CN 201710516151 A CN201710516151 A CN 201710516151A CN 109219022 A CN109219022 A CN 109219022A
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- China
- Prior art keywords
- internet
- access point
- sensing device
- information sensing
- things
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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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 relates to a kind of cut-in methods of Internet of Things, comprising the following steps: information sensing device obtains received signal strength indication, access device number, data transmission rate and the frame transmission time of all access points near in the Internet of Things；The information sensing device determines the access point of selection access based on the information that step 1 obtains.
Description
[technical field]
The invention belongs to Internet of Things and computer network field more particularly to a kind of cut-in methods of Internet of Things.
[background technique]
In recent years, with the further development of information age, Internet of Things becomes new trend.As its name suggests, Internet of Things
It is exactly the internet that object object is connected, by various information sensing devices, what real-time acquisition any need was monitored, and connected, interacting
The information of the various needs such as object or process, the huge network formed in conjunction with internet.The purpose is to realize object and object,
Object and people, the connection of all articles and network facilitate identification, manage and control.
Internet of Things in the prior art is usually all using wireless network connection, such as ZigBee, bluetooth or WIFI
Deng.Wherein WIFI is the present most common wireless network.But the network signal transmission range in WIFI network is smaller, and
It is affected by barrier (such as wall), in the biggish environment of area ratio, needs to arrange multiple access points in different location,
To guarantee that WIFI signal can be received at various locations.
In the environment of multiple access points, as soon as a suitable access point how is selected, so that network load more balances
Become a problem.
[summary of the invention]
In order to solve the above problem in the prior art, the invention proposes a kind of weighing apparatus cut-in methods of Internet of Things.
The technical solution adopted by the invention is as follows:
A kind of cut-in method of Internet of Things, comprising the following steps:
Step 1: information sensing device obtains the received signal strength indication of all access points near in the Internet of Things, connects
Enter number of devices, data transmission rate and frame transmission time；
Step 2: the information sensing device determines the access point of selection access based on the information that step 1 obtains.
Further, described access point is WIFI network access point.
Further, the Internet of Things includes central equipment and information sensing device.
Further, central equipment receives its data detected from information sensing device by network and is handled.
Further, user is remotely connected using client by internet and central equipment, so as to pass through center
Equipment accesses and controls each information sensing device.
The beneficial effect comprise that the balancedly access information sensing equipment between diverse access point, so that different
The burden of access point compares balance, and resource utilization is higher.
[Detailed description of the invention]
Described herein the drawings are intended to provide a further understanding of the invention, constitutes part of this application, but
It does not constitute improper limitations of the present invention, in the accompanying drawings:
Fig. 1 is the general frame figure of Internet of Things of the present invention；
Fig. 2 is the network connection diagram of Internet of Things of the present invention.
[specific embodiment]
Come that the present invention will be described in detail below in conjunction with attached drawing and specific embodiment, illustrative examples therein and says
It is bright to be only used to explain the present invention but not as a limitation of the invention.
With reference to attached drawing 1, it illustrates Internet of things system applied by the present invention, which includes multiple information sensing devices
And central equipment, it is connected between central equipment and each information sensing device by WIFI network, central equipment passes through the network
Its data detected is received from these information sensing devices and is handled, these information sensings of network-control can also be passed through
Equipment.The central equipment is usually a kind of embedded device, passes through network module and PERCOM peripheral communication.User is logical using client
It crosses internet and central equipment remotely connects, so as to access and control each information sensing device by central equipment.
Internet of Things referring to attached drawing 2, it illustrates the network connection diagram of information sensing device of the present invention and access point, in figure
System includes three access points (three are only an example, may have more access points in actual conditions), Yi Jiduo
A information sensing device (being represented in figure with small circle) is deployed in around these three access points, when information sensing device starting,
It requires connect to one of access point, to access WIFI network.Pass through a cable network phase between three access points
Mutual communication.
Internet of things access method proposed by the present invention is that the lower access point of burden is selected to connect by information sensing device
Enter, what the access adjustment of network was not executed actively by the access point for undertaking access, it is distributed to each information sensing device
Passively execute.In order to select the lower access point of burden, information sensing device of the invention needs to consider a variety of measurements
Factor specifically includes:
1) RSSI, i.e. received signal strength indication.The signal that each information sensing device may be located at multiple access points covers
Within the scope of lid, but for the same information sensing device, the signal strength of diverse access point is different, information biography
Equipment is felt when scanning access point, can measure the received signal strength indication (RSSI) of each access point.Typically, it connects
The RSSI of access point is higher, and the link-quality between information sensing device and access point is better, and RSSI is lower, information sensing device and
Link-quality between access point is poorer, and when RSSI is as low as to a certain degree, very poor link-quality will lead to very poor transmission matter
Amount, i.e. transmission can often fail, and number of retransmissions can obviously increase, and even result in information sensing device and go offline.Therefore, information sensing
Equipment needs an acceptable minimum RSSI value, is denoted as RSSI when selecting access pointmin, the RSSIminIt is to set in advance
The RSSI value set.
2) number of devices that access point is currently accessed.The same access point can access a large amount of equipment, access device
Quantity is to influence a key factor of access point processing capacity, and the quantity of the equipment of access is more, in order to keep each equipment
Connection, access point need to pay more resources and processing capacity.
3) data transmission rate of access point.Data transmission rate is the most important mark of access point current loads, each access
The afforded data transmission rate of point all has the upper limit, and when data transmission rate is close to the upper limit, information sensing device transmits number
According to rate will decline rapidly, influence the transmittability of whole network.Data transmission has uplink and downlink both direction, this hair
Bright described data transmission rate refers to the sum of transmitting uplink data rate and downlink data transmission rate.
4) packet loss.Packet loss reflects the actual mass of a data between access point and information sensing device transmission,
It is influenced by various factors such as environment, distance, signals.Packet loss of the invention mainly passes through information sensing device to access
Point is successfully transmitted the frame transmission time an of data frame to measure.
The present invention carries out the balanced access of Internet of Things by above-mentioned 4 factors, and specific method and step is as follows:
1) when an information sensing device needs to access WIFI network, all accesses of surrounding are scanned and obtained first
Point.
In general, a claim frame can be sent when WIFI network near information sensing device active scan, when
When access point receives the claim frame, a response frame can be replied, information sensing device passes through the response frame received, so that it may
The SSID of all access points around obtaining.
2) information sensing device obtains the RSSI of all access points of surrounding.
Information sensing device can measure corresponding access by frame according to response when receiving the response frame of each access point
The RSSI of point.
3) information sensing device checks whether the RSSI of each access point is greater than predefined RSSImin, it is assumed that shared n
The RSSI of access point is greater than RSSIminIf n≤1, which is directly accessed that maximum access point of RSSI,
Otherwise continue following step.
As previously mentioned, RSSIminIt is the acceptable minimum for guaranteeing link-quality, if n=1, information sensing is set
It is standby to have no option, it only has access greater than RSSIminOnly one access point, if n=0, illustrate nearby none access point
Meet access conditions, then information sensing device can only also access that maximum access point of RSSI as far as possible.
4) information sensing device sends load request to above-mentioned n access point, receive the access point of load request to this
Information sensing device returns to the equipment sum and its data transmission rate within nearest certain time that it has been accessed.
The certain time is a unified predefined time span, is generally arranged to T hour, it is preferred that T
=1.Each access point is according to its data transmission rate of the data transmission scenarios real-time statistics of itself.
5) information sensing device is directed to above-mentioned n access point, and the frame of metrical information sensing equipment to each access point transmits
Time.
Specifically, for one of access point Ai, information sensing device is continuously sent to it K mac frame, and access point exists
After receiving mac frame, an ACK can be replied, information sensing device record send each mac frame to receive corresponding ACK when
Between, calculate the average value T of this K timei, the TiIt is exactly information sensing device to access point AiFrame transmission time.
6) for above-mentioned n access point, information sensing device calculates separately its load value.
Specifically, it is assumed that n access point is A1, A2... ..., An, wherein AiRSSI value be set as RSSIi, that has accessed sets
Standby sum is set as Si, the data transmission rate within the certain time is Di, information sensing device to AiFrame transmission time be
Ti.The then AiLoad value FiIt can be calculated by following formula:
Wherein, W1、W2、W3It is three predefined weighted values, and meets W1+W2+W3=1；
DmaxIt is all DiIn maximum value, TmaxIt is all TiIn maximum value.
7) the smallest access point of load value in n access point of information sensing device selection access.
After information sensing device accesses the smallest access point of load value, the concrete condition of each access point may be sent out
Changing, such as the number of devices of access, data transmission rate may all change, therefore the load of each access point is practical
It is in variation.It is therefore possible to after a certain time, the smallest access point of load value becomes load value most instead
Big access point.Based on this, the access point of information sensing device is also required to be adjusted.According to one embodiment of present invention,
Can allow information sensing device after accessing access point the predetermined time (such as T hours, the calculating time one with data transmission rate
Cause) it is disconnected from access point, above-mentioned cut-in method is then executed again.Multiple information sensing devices are indirect when same in order to prevent
Enter, collide, another embodiment of the invention can allow information sensing device T hours plus m minutes after accessing access point
It is disconnected from access point, then executes above-mentioned cut-in method；Wherein m is a random value.
Based on the above cut-in method, insert experiment is carried out in the Internet of Things of a wide range of complex situations, to experimental result
Statistical analysis show that compared with prior art the utilization of resources of each access point more balances, overall resource utilization is high,
The reaction speed for improving each access point balances access point load more.
The above description is only a preferred embodiment of the present invention, thus it is all according to the configuration described in the scope of the patent application of the present invention,
The equivalent change or modification that feature and principle are done, is included in the scope of the patent application of the present invention.
Claims (5)
1. a kind of cut-in method of Internet of Things, which comprises the following steps:
Step 1: information sensing device obtains the received signal strength indication of all access points near in the Internet of Things, access is set
Standby number, data transmission rate and frame transmission time；
Step 2: the information sensing device determines the access point of selection access based on the information that step 1 obtains.
2. the cut-in method of Internet of Things according to claim 1, which is characterized in that described access point is WIFI network access
Point.
3. the cut-in method of Internet of Things described in -2 any one according to claim 1, which is characterized in that the Internet of Things includes
Central equipment and information sensing device.
4. according to the cut-in method of Internet of Things described in claim 3 any one, which is characterized in that central equipment passes through network
Its data detected is received from information sensing device and is handled.
5. according to the cut-in method of Internet of Things as claimed in any one of claims 3 to 4, which is characterized in that user uses client
It is remotely connected by internet and central equipment, so as to access and control each information sensing device by central equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710516151.6A CN109219022A (en) | 2017-06-29 | 2017-06-29 | A kind of cut-in method of Internet of Things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710516151.6A CN109219022A (en) | 2017-06-29 | 2017-06-29 | A kind of cut-in method of Internet of Things |
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| Publication Number | Publication Date |
|---|---|
| CN109219022A true CN109219022A (en) | 2019-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710516151.6A Withdrawn CN109219022A (en) | 2017-06-29 | 2017-06-29 | A kind of cut-in method of Internet of Things |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110430587A (en) * | 2019-08-13 | 2019-11-08 | 北京百佑科技有限公司 | Rapid networking method, internet-of-things terminal and computer readable storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104735725A (en) * | 2015-04-15 | 2015-06-24 | 杭州敦崇科技股份有限公司 | Load balancing method for wireless access points |
| CN104968018A (en) * | 2015-06-25 | 2015-10-07 | 西安电子科技大学 | WLAN access load balancing optimization method based on SDN |
| CN106165498A (en) * | 2014-04-07 | 2016-11-23 | 高通股份有限公司 | For selecting the method and apparatus improved mechanism of access point |
-
2017
- 2017-06-29 CN CN201710516151.6A patent/CN109219022A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106165498A (en) * | 2014-04-07 | 2016-11-23 | 高通股份有限公司 | For selecting the method and apparatus improved mechanism of access point |
| CN104735725A (en) * | 2015-04-15 | 2015-06-24 | 杭州敦崇科技股份有限公司 | Load balancing method for wireless access points |
| CN104968018A (en) * | 2015-06-25 | 2015-10-07 | 西安电子科技大学 | WLAN access load balancing optimization method based on SDN |
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| CHEN J C等: "《Effective access point selection algorithms for handoffs in IEEE 802.11 wireless LANs》", 《 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE》 * |
| 柳斌: "《基于SDN的WLAN接入技术研究》", 《中国优秀硕士学位论文全文数据库（信息科技辑）》 * |
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| CN110430587A (en) * | 2019-08-13 | 2019-11-08 | 北京百佑科技有限公司 | Rapid networking method, internet-of-things terminal and computer readable storage medium |
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Application publication date: 20190115 |
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