CN108965063A - A kind of abnormality eliminating method of sweep check, gateway and server - Google Patents
A kind of abnormality eliminating method of sweep check, gateway and server Download PDFInfo
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- CN108965063A CN108965063A CN201810958127.2A CN201810958127A CN108965063A CN 108965063 A CN108965063 A CN 108965063A CN 201810958127 A CN201810958127 A CN 201810958127A CN 108965063 A CN108965063 A CN 108965063A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
- H04L43/0829—Packet loss
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Environmental & Geological Engineering (AREA)
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- General Health & Medical Sciences (AREA)
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Abstract
A kind of abnormality eliminating method of sweep check, gateway and server.The described method comprises the following steps: application server AS starts overtime timer after having sent test frequency sweep response message, if overtime timer is overtime, the AS is sent to gateway restores gateway default configuration message；After the gateway receives the recovery gateway default configuration message, restore default original state, and return to gateway to AS and restore default configuration confirmation message；After the AS receives the gateway recovery default configuration confirmation message, test is exited, restores default original state.The present invention establishes timeout mechanism using timer, and Lora terminal, gateway and AS can be made to be restored to default initialization state.
Description
Technical field
The present invention relates to Lora technical field more particularly to a kind of abnormality eliminating methods of sweep check, terminal and service
Device.
Background technique
LoRaWAN is a set of communications protocol and system architecture for the design of LoRa electric communication network.Lora communication system
System generally comprises terminal, base station, network server, this four parts of application server.Star network is used between base station and terminal
Network topology is able to due to the long range characteristic of LoRa, between them using single-hop transmission.Terminal node can be issued multiple simultaneously
Forward process is then done to the LoRaWAN protocol data between network server and terminal in base station, base station, by LoRaWAN data point
It has not been carried on LoRa radio frequency transmission and TCP/IP.
Terminal in Lora communication system is divided into three classes: Class A, Class B, Class C.The terminal of Class A is adopted
With the on-demand reported data of ALOHA agreement.Two of short duration downlink reception windows can be all closely followed after each uplink, realized with this double
To transmission.This operation is most power saving.The terminal of Class A could issue number to it after having to wait for terminal reported data
According to application scenarios are usually dustbin monitoring, smoke alarm, gas-monitoring etc..For the terminal of Class B, in addition to
The random reception window of Class A, can also at the appointed time open reception window.In order to which terminal can at the appointed time be opened
Window is received, terminal needs the beacon synchronous from gateway receiving time.The terminal of Class B is in terminal fixed reception window
Data are issued to it, the delay issued increases, and application scenarios are usually valve control aqueous vapor ammeter etc..The terminal of Class C
Substantially always on reception window, is only momentarily closed when sending.Shape is persistently received since the terminal of Class C is in
State can issue data to terminal at any time.Its application scenarios is usually Street lamps control etc..The terminal of Class C can compare
Class A and Class B more power consumption.
Fig. 1 and Fig. 2 respectively illustrates the timing diagram of the uplink and downlink of the terminal of Class A and Class C.Class C and
Class A is substantially identical, and only during Class A suspend mode, it, which is all opened, receives window RX2.
Fig. 3 shows the timing diagram of the uplink and downlink of the terminal of Class B.The time slot of Class B is then more complex, it has one
A synchronization time slot beacon, there are one the reception window ping time slots of fixed cycle.As Fig. 3 example in, the beacon period
It is 128 seconds, the ping period is 32 seconds.
LoRaWAN regulation data frame type has Confirmed or two kinds of Unconfirmed, that is, needs response and be not required to
Want acknowledgement type.Manufacturer can need to select suitable type according to application.There are two types of data packet formats by LoRa: showing and hidden
Whether formula mainly comprising byte number, encoding rate and uses the information such as CRC wherein the header of display data packet is shorter.Such as Fig. 4,
LoRa data packet includes: Preamble (lead code), Header (header of optional type), Payload (Data payload).
What is transmitted under the environment of internet of things of the workshop Lora mainly includes the transmission of switching value and quantity of state using data, these
It can be transmitted in Lora communication system by way of short message using data.
After the completion of the deployment of Lora network, need to obtain signal quality, the message quality of network, packet loss and others are commented
Estimate the index of network performance, this just needs to test network, and sweep check is one of usual way of testing characteristics of network,
By sweep check, the band noise disturbed condition in certain band limits can be checked, for selecting suitable frequency range；It can also check
Signal communication ability of the region under given pace in each spatial dimension eliminates communication dead angle.
It needs to send test packet and response message between terminal and server in sweep check, but in communication abnormality
In the case where, message can not be received and dispatched between terminal, gateway and server, terminal, gateway and server can not quickly recover to just
Beginning state, this brings trouble to test job, therefore in the case where communication abnormality, needs to solve terminal, gateway and service
The technical issues of how device quickly recovers to original state.
Summary of the invention
For the present invention proposes the abnormality eliminating method, gateway and server of a kind of sweep check.
In the method, in communication abnormality, LoRa terminal can not receive response message, and AS can not receive frequency sweep control message,
In order to allow AS, gateway can be restored to default original state, need using some exception handlings.At this time using timing
Device establishes timeout mechanism, and Lora terminal, gateway and AS can be made to be restored to default initialization state.
To achieve the above object, the present invention provides a kind of abnormality eliminating method of sweep check, this method includes following
Step:
Application server AS starts overtime timer, if overtime timer after having sent test frequency sweep response message
Time-out, the AS is sent to gateway restores gateway default configuration message；
After the gateway receives the recovery gateway default configuration message, restore default original state, and return to net to AS
It closes and restores default configuration confirmation message；
After the AS receives the gateway recovery default configuration confirmation message, test is exited, restores default original state.
According to another aspect of the present invention, the method also includes:
The time-out time of overtime timer is set, and the time-out time is defined as follows: message number * frequency number * (estimation
Time interval+specified redundancy time for sending of transmitting-receiving time+ping message).
According to another aspect of the present invention, the method also includes:
Dynamic adjusts the time-out time of timer, specifically: the serial number of current message is carried in Ping message, AS is being received
To after the Ping message, the quantity of remaining Ping message is calculated, and reconfigures the time-out time of overtime timer, it is described
The time-out time reconfigured=residue Ping message quantity * (time interval that the transmitting-receiving time+ping message of estimation is sent
+ the redundancy time specified).
According to another aspect of the present invention, the method also includes:
Terminal restores default original state after sending multiple end test packets.
According to another aspect of the present invention, the method also includes:
For continuous Ping-Pong sweep check, AS starts timer, institute after receiving the last one Ping message
The timing of timer is stated using fixed value；If overtime timer is overtime, AS restores gateway default setting, exits test shape
State.
According to another aspect of the present invention, the fixed value is 5 minutes.
According to another aspect of the present invention, the present invention provides a kind of gateway of abnormality processing for sweep check, institutes
Stating gateway includes processor, the processor is configured to the method for executing sweep check abnormality processing.
According to another aspect of the present invention, the present invention provides a kind of server of abnormality processing for sweep check,
The server includes processor, the processor is configured to the method for executing sweep check abnormality processing.
Abnormality eliminating method, gateway and the server of sweep check provided by the invention establish overtime machine using timer
System, can make Lora terminal, gateway and AS be restored to default initialization state.
By referring to the following drawings and to the detailed description of a specific embodiment of the invention, feature and advantage of the invention
It will become apparent.
Detailed description of the invention
Fig. 1 and Fig. 2 is the timing diagram of the uplink and downlink of the terminal of Class A and Class C in the prior art；
Fig. 3 is the timing diagram of the uplink and downlink of the terminal of Class B in the prior art；
Fig. 4 is the structural schematic diagram of data frame in the prior art；
Fig. 5 is sweep check abnormality processing flow diagram in one embodiment of the present of invention；
Fig. 6 is in another embodiment of the invention with frequency Ping-Pong sweep check flow diagram.
Specific embodiment
In order to keep technical solution of the present invention clearer, clear, it is described in further detail, should manages below in conjunction with attached drawing
Solution, the specific embodiments described herein are merely illustrative of the present invention, is not intended to limit the present invention.
For convenience, it is also indicated using transmitting terminal other than indicating server end and Lora terminal in the present invention
One of server end and Lora terminal indicate another using receiving end, and even server is transmitting terminal, then Lora terminal is exactly
Receiving end, if Lora terminal is transmitting terminal, server is exactly receiving end.
The present invention proposes a kind of Lora sweep check method, terminal and server.In the method, downlink sweep check by
Application server AS sends the sweep check message specified number to Lora terminal, and Lora terminal is responsible for counting and collection downlink is swept
The quantity and signal quality of frequency test packet, and return result to AS.Uplink sweep check is referred to from Lora terminal to AS transmission
Fixed number purpose uplink sweep check message is responsible for collecting the quantity and signal quality of uplink test packet by AS.The present invention provides
Method can to Lora network carry out sweep check, obtain the performance parameter of network, provide help for the network optimization.
Specifically, Lora sweep check method provided by the invention the following steps are included:
The relevant parameter of frequency sweep is arranged in Lora terminal, and the relevant parameter is passed to application server AS, and unlatching is swept
Frequency works；
When uplink sweep check, Lora terminal sends the uplink sweep check message specified number to AS, and AS collects uplink
The quantity and signal quality of sweep check message；
When downlink sweep check, AS sends the downlink sweep check message specified number, Lora terminal system to Lora terminal
Meter and the quantity and signal quality for collecting downlink sweep check message, and return result to AS.
In view of simplifying the purpose realized, the frequency sweep process of up channel and the frequency sweep process of down channel are separated real
It is existing.
In view of the needs of field work, sweep check process is responsible for configuring the related ginseng of sweep check by Lora terminal
Number, and be responsible for starting and terminating sweep check by Lora terminal.
Sweep check process master control is still grasped by AS, i.e., is responsible for the unified of test result information by AS and stores, statistical
Analysis, as the result is shown, the switching command and synchronic command of pilot process.
Under the bandwidth situation of 125kHz, since gateway sx1301 is merely able to be received on 8 up channels, and
Under 250kHz and 500kHz bandwidth situation, gateway sx1301 is merely able to be received on a up channel, so gateway needs
It to update repeatedly and receive frequency configuration file, restart packet forward task, this process also should be responsible for control by AS.
The message transmitted between AS and terminal includes three kinds: frequency sweep controls message, frequency sweep response message and sweep check report
Text；
Frequency sweep controls message: Lora terminal is responsible for the configuration of sweep check relevant parameter, and is responsible for starting and terminates frequency sweep
Test.And AS be responsible for the control of sweep check process with it is synchronous.So Lora terminal and AS require to send frequency sweep control message.
Frequency sweep response message: for the response of frequency sweep control message, all it is classified as frequency sweep response message.
Sweep check message: the data message for uplink and downlink test.
Sweep check method is: downlink sweep check sends the sweep check message specified number from AS to Lora terminal,
Lora terminal is responsible for counting and collecting the quantity and signal quality of downlink sweep check message, and returns result to AS.Uplink
Sweep check sends the uplink sweep check message specified number from Lora terminal to AS, is responsible for collecting uplink test packet by AS
Quantity and signal quality.
In order to from AS frequency sweep control message can incoming terminal recommend AS issue frequency sweep control using SF12data rate
System and response message, Lora terminal are arranged the special channel RX2 and are used to receive from the control of AS frequency sweep and response message.
In order to guarantee that frequency sweep control that Lora terminal is sent and response message can reach gateway and is transmitted to AS, recommend to make
Frequency sweep control and response message are sent with SF12data rate, but sends frequency sweep control and response message upstream frequency, is needed
It is determined according to current test item.
In the case where considering the multiple gateways of field deployment, when carrying out uplink sweep check, need to adjust simultaneously more
The reception set of frequency of a gateway.
As shown in figure 5, the present invention provides a kind of abnormality eliminating methods of sweep check, in communication abnormality,
LoRa terminal can not receive response message, and AS can not receive frequency sweep control message, and in order to allow AS, gateway can be restored to silent
Recognize original state, needs using some exception handlings.Timeout mechanism is established using timer at this time, Lora can be made whole
End, gateway and AS are restored to default initialization state.
To achieve the above object, the sweep check abnormality eliminating method the following steps are included:
Application server AS starts overtime timer, if overtime timer after having sent test frequency sweep response message
Time-out, the AS is sent to gateway restores gateway default configuration message；
After the gateway receives the recovery gateway default configuration message, restore default original state, and return to net to AS
It closes and restores default configuration confirmation message；
After the AS receives the gateway recovery default configuration confirmation message, test is exited, restores default original state.
Preferably, the method also includes:
The time-out time of overtime timer is set, and the time-out time is defined as follows: message number * frequency number * (estimation
Time interval+specified redundancy time for sending of transmitting-receiving time+ping message).
Preferably, the method also includes:
Dynamic adjusts the time-out time of timer, specifically: the serial number of current message is carried in Ping message, AS is being received
To after the Ping message, the quantity of remaining Ping message is calculated, and reconfigures the time-out time of overtime timer, it is described
The time-out time reconfigured=residue Ping message quantity * (time interval that the transmitting-receiving time+ping message of estimation is sent
+ the redundancy time specified).
Preferably, the method also includes:
Terminal restores default original state after sending multiple end test packets.
Preferably, the method also includes:
For continuous Ping-Pong sweep check, AS starts timer, institute after receiving the last one Ping message
The timing of timer is stated using fixed value；If overtime timer is overtime, AS restores gateway default setting, exits test shape
State.
In order to more clearly understand the present invention, hereafter the present invention will be described in more detail for merogenesis.
1, the relevant parameter of uplink and downlink sweep check
The relevant parameter for carrying out uplink and downlink sweep check includes but is not limited to: channel frequency, channel bandwidth, data transfer rate, volume
Code rate, transmission power, communication message number and communication message interval time.Channel frequency parameters may need in sweep check
To change in 8 frequencies, but other parameters such as bandwidth, data transfer rate, encoding rate, transmission power, communication message number and logical
Believe that message interval time must all be a fixed value.
2, frequency, frequency bandwidth and channel
The present invention can carry out sweep check to all channels of the frequency from 430.0MHz to 510MHz.Channel bandwidth is supported
Tri- kinds of 125KHz, 250KHz and 500KHz.It is practical using channel bandwidth 200KHz as stepping when channel bandwidth is 125KHz, frequency
Rate can distribute 399 channels from 430.1MHz to 509.7MHz.It is practical with channel bandwidth when channel bandwidth is 250KHz
400KHz is stepping, and frequency can distribute 199 channels since 430.2MHz.It is practical when channel bandwidth is 500KHz
Using channel bandwidth 600KHz as stepping, frequency can distribute 133 channels since 430.3MHz.
3, data transfer rate or spreading factor, encoding rate
Spreading factor supports SF7-SF12 corresponding data rate DR5-DR0.Totally 6 rates.Gateway SX1301 chip is in uplink
Receiving direction, either 125kHz, under 250kHz or 500kHz bandwidth, all support SF7-SF12 totally 6 data transfer rates.Encoding rate
It is divided into 4 kinds: 4/5,4/6,4/7,4/8.
4, terminal transmission power and gateway send power
According to CN470/430 code, support TX_POWER_0 (maximum and default) to TX_POWER_7 (minimum) 8 transmissions
Power.But according to the transmission power of realization code sx1276.c, the Lora terminal of Lora terminal sx1276 can be set to from
Each transmission power level of 2dB to 20dB.
A variety of transmission powers that gateway is supported, are arranged by configuration file.NS can only use configuration text when sending downlink message
The transmission power set in part.
5, every channel frequency sweep number of communications and communication time interval
The number of communications (test packet transmission times) and communication time interval (test report of each sweep check can be set
Literary transmission time interval).
The setting of communication time interval, be in view of the sending time of message under minimum speed limit, and considers to receive window
Time and mac state machine renewal time.Communication time interval is greater than the summation of these three times.In special circumstances, between communication
It can shorten every the time, message can continuously be emitted with relatively closely spaced.
6, support of the gateway SX1301 chip to the above parameter
In uplink receiving direction, SX1301 chip has IF0-IF7 totally 8 receiving channels, these receiving channels are only supported
125KHz bandwidth, but most 8 upstream frequencies can be monitored.Data that can be SF7-SF12 at these frequencies all
It is monitored under rate, while receiving most 8 messages.In addition there are one IF8 receiving channels for SX1301 chip, can configure
At 125kHz or 250kHz 500kHz bandwidth, a frequency can only be monitored, and respective frequencies can only be monitored by setting
One data rate.That is if channel width is 250kHz or 500kHz in sweep check, SX1301 once can only
The message under a upstream frequency is received, does not support the sweep check simultaneously of 8 up channels.
In downlink sending direction, only one sendaisle of SX1301 can only once send a message, hair can be set
Deliver newspaper literary Radio channel (channel frequency), Bandwidth (bandwidth), data rate (data transfer rate), coding rate
(encoding rate), RF output power (transmission power).
All 4 kinds of coding rate are supported in SX1301 transmitting-receiving.But each transceiver channel must specify coding in advance
rate.For uplink receiving, a channel cannot monitor all as IF0-IF7 while listening for all data rate
coding rate.A coding rate can only once be set.
7, support of the terminal SX1276/1278 chip to the above parameter
Terminal SX1276/1278 chip is semiduplex single channel transceiver, and transmitting-receiving cannot carry out simultaneously, once can only
Receive and dispatch a message.Primary transmitting-receiving all can only be in the Radio channel (channel frequency) of configured in advance, Bandwidth (band
It is wide), it carries out under data rate and coding rate.Terminal SX1276/1278 chip support in 125kHz or 250kHz or
Under 3 kinds of bandwidth of 500kHz and SF6-SF12 is received and dispatched under 7 data rate totally.Wherein SF6 is only supported under specific condition
The high-speed traffic of lora, and gateway SX1301 chip does not support SF6, so without testing SF6 in test process.
All 4 kinds of coding rate are supported in the transmitting-receiving of terminal SX1276/1278 chip.But transmitting-receiving must all specify in advance
coding rate.Primary transmitting-receiving can only support a kind of coding rate.
8, in a sweep check multiple frequency points switching mode
If being related to multiple swept frequencies during a sweep check, when needing to send multiple frequency sweep messages.Have two
Kind send the mode of message: a kind of mode is to send the frequency sweep message specified number on a swept frequency, then jump again
The frequency sweep message specified number is sent to next frequency, so circulation is until all frequencies；Another kind of mode is, at one
A frequency sweep message is sent on swept frequency, then retransmits a frequency sweep message jumping to next frequency, is so recycled
Until all frequencies.
Which kind of mode in both the above mode is used during sweep check, needs to accomplish can configure.
9, Lora system sweep check original state defines
In view of under OTAA mode, suspension is possible to triggering Auto-reconnect.It is recommended that under original state, Lora terminal with
ABP mode networks, and sets fixed downstream frequency for downlink RX2, data rate is SF12.Terminal uplink rate is using silent
The initial reception frequency for recognizing initial value and gateway default is consistent.
In order to guarantee that sweep check process can normally start, before starting sweep check every time, Lora terminal and gateway must
Default original state must be reverted to.Each sweep check terminates, and Lora terminal and gateway should all revert to the initial shape of default
State.
10, the collection of Lora system sweep check result
The test result information for needing to collect during sweep check includes: signal quality (maximum value, the minimum value of message
And average value), the information such as packet loss.If being related to multiple frequency points during a frequency sweep, that test result information collected
It should be that each frequency point is a.The time delay of PingPong process is not within the collection access of test result information.
Lora terminal is not done too many data and is saved, theoretically the not responsible message qualitative data for collecting each message.?
In PingPong test process, AS issues the signal that the Ping message just received can be carried in the Pong message of Lora terminal
Quality and simple statistical data.And Lora terminal is sent in the Ping message of AS and can carry one and receive
The signal quality of Pong message and simple statistical data.In this way in PingPong interactive process, so that it may complete Lora
Communicate the collection of both ends test result information.
11, Ping-Pong test method of the uplink and downlink with frequency frequency sweep
Fig. 6 is the flow diagram for carrying out uplink and downlink in the present invention and testing with the Ping-Pong of frequency frequency sweep.In Lora terminal
When being in default original state with gateway, initiated by Lora terminal with frequency Ping-Pong sweep check.It is provided below with reference to Fig. 6
Some committed steps in Ping-Pong test.
Step 1, Lora terminal are responsible for configuring this relevant parameter of uplink sweep check, and in default upstream frequency and
Message is controlled by frequency sweep under SF12 rate and is sent to AS.
After step 2, AS receive the control message, the uplink receiving channel of Lora gateway is configured according to configuration parameter at once,
Restart the packet forward task of gateway, gateway is waited to enter swept frequency reception state；
After step 3, AS confirmation Lora gateway are ready, Rx2 downstream frequency and SF12 rate that AS is defaulted by terminal
Frequency sweep response message is sent to lora terminal, it is ready to Lora terminal check, it can start to send uplink sweep check report
Literary Ping message；
After step 4, Lora terminal only receive response message, it can just start to send sweep check message (Ping message),
Otherwise configuration parameter can be repeatedly retransmitted, until time-out；
After step 5, Lora terminal receive response message, starting timer timing, with specified time interval, (specified is swept
Frequency parameter) start to send Ping message, it is sent, Lora terminal opens Rx2 reception window under identical sweep parameters at once
Mouth (test process does not open Rx1 window always)；
Step 6, AS are after receiving the Ping message of Lora terminal, as early as possible with (and Ping message) identical transmission parameter,
Send Pong message；
Step 7, Lora terminal retransmit a Ping message (without until timing after receiving Pong message at once
Device time-out).It, can be after timing again if Lora terminal does not receive Pong message in the time-out time as defined in timer
Send a Ping message；
Step 8, repeatedly, until Lora terminal has sent the Ping message of configuration parameter specified quantity.
Step 9, in Ping-Pong test process, Lora terminal be responsible for collect downlink Pong message signal strength, lose
The information such as packet rate, AS are responsible for collecting the signal strength and packet loss information of uplink Ping message；
Step 10, Lora terminal pass through specified each uplink frequency sweep frequency after all uplink Ping messages are sent
Rate sends sweep check with the rate of SF12 and controls message, informs that AS terminates this sweep check.Lora terminal has sent control
After message, default original state is voluntarily reverted to；
After step 11, AS receive the control message for terminating sweep check, gateway is received into frequency retrieval into default configuration, weight
Gateway packet forward task is opened, into default original state；
Step 12, so far, AS, gateway and Lora terminal all revert to initial default state.
In above-mentioned test method, it should be noted that:
1, when AS sends Pong message, the frequency in parameter, bandwidth, coding rate, data rate is sent and is all easy
Accomplish it is consistent with Ping message, but Tx Power it is more difficult accomplish it is consistent.Because of Tx power and terminal branch that gateway is supported
The Tx Power held is not consistent.And gateway, usually with maximum power transmission, there is no save energy consumption.So not having
Multiple TxPower of necessity test gateway, therefore residential gateway downlink message can be sent in frequency sweep configuration parameter
TxPower。
2, it needs to consider under abnormal conditions, LoRa terminal can not receive response message, and AS can not receive frequency sweep control message
The case where, timeout mechanism is established using timer, in order to which Lora terminal and AS are restored to default initialization state.
Abnormality processing:
It not can be carried out normal control communication under some abnormal conditions between AS and Lora terminal, in order to allow AS, gateway energy
It is enough restored to default original state, is needed using some exception handlings.Lora terminal because there is artificial intervention,
It can restore default original state by manually actively terminating testing process.
Using timeout mechanism: AS is sending test starting response message, starts overtime timer, and time-out time defines such as
Under: message number * frequency number * (time interval+certain redundancy time that the transmitting-receiving time+ping message of estimation is sent).
If overtime timer triggers, AS restores gateway default setting, exits test mode.
The optimization of timeout mechanism: in order to guarantee that AS time-out time can be matched with the end time of sweep check as far as possible,
The serial number of current message can be carried in Ping message, AS calculates remaining Ping message after receiving the Ping message
Quantity, and reset overtime timer, resetting time-out time=residue Ping message quantity * (the transmitting-receiving time of estimation+
The time interval that ping message is sent+certain redundancy time).In this way during a normal PingPong, AS can be with
According to the Ping message dynamic adjustment time-out time received, so that the end time of time-out time and sweep check connects as far as possible
Closely.
12, continuous ping-Pong is tested
In order to which Field Force can continuously test the signal intelligence of Lora network in moving process, need to design one kind
Continuous continual Ping-Pong test method.This test method carries out follow-on test just for single-frequency point, does not require more
Continuous Ping-Pong test is carried out between a frequency point.
The explanation of continuous ping Pong test process and the above chapters and sections is almost the same.Continuous ping Pong test process is necessary
Actively stopped by artificial.
Abnormality processing:
It not can be carried out normal control communication under some abnormal conditions between AS and Lora terminal, in order to allow AS, gateway energy
It is enough restored to default original state, is needed using some exception handlings.Lora terminal because there is artificial intervention,
It can restore default original state by manually actively terminating testing process.
Here the timeout mechanism used and upper chapters and sections different from.AS is after receiving the last one Ping message, starting
Timer, timing use fixed value, such as 5 minutes.If overtime timer triggers, AS restores gateway default setting, moves back
Test mode out.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the design of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/it is used in it indirectly
He is included in scope of patent protection of the invention relevant technical field.
Claims (8)
1. a kind of abnormality eliminating method of sweep check, which is characterized in that the described method comprises the following steps:
Application server AS starts overtime timer after having sent test frequency sweep response message, if overtime timer is overtime,
The AS is sent to gateway restores gateway default configuration message；
After the gateway receives the recovery gateway default configuration message, restore default original state, and extensive to AS return gateway
Multiple default configuration confirmation message；
After the AS receives the gateway recovery default configuration confirmation message, test is exited, restores default original state.
2. abnormality eliminating method according to claim 1, which is characterized in that the method also includes:
The time-out time of overtime timer is set, and the time-out time is defined as follows: the message number * frequency number * (receipts of estimation
Send out time interval+specified redundancy time that time+ping message is sent).
3. abnormality eliminating method according to claim 1, which is characterized in that the method also includes:
Dynamic adjusts the time-out time of timer, specifically: the serial number of current message is carried in Ping message, AS is receiving
After stating Ping message, calculate the quantity of remaining Ping message, and reconfigure the time-out time of overtime timer, it is described again
The time-out time quantity * of residue Ping message=(time interval that the transmitting-receiving time+ping message of estimation is sent+of configuration refers to
Fixed redundancy time).
4. abnormality eliminating method according to claim 1, which is characterized in that the method also includes:
Terminal restores default original state after sending multiple end test packets.
5. abnormality eliminating method according to claim 1, which is characterized in that the method also includes:
For continuous Ping-Pong sweep check, AS starts timer after receiving the last one Ping message, described fixed
When device timing use fixed value；If overtime timer is overtime, AS restores gateway default setting, exits test mode.
6. abnormality eliminating method according to claim 5, which is characterized in that the fixed value is 5 minutes.
7. a kind of gateway of the abnormality processing for sweep check, the gateway includes processor, the processor is configured to
Execute the method such as the sweep check abnormality processing as performed by the gateway in claim any one of 1-6.
8. a kind of server of the abnormality processing for sweep check, the server includes processor, and the processor is matched
It is set to the method executed such as the sweep check abnormality processing as performed by the server in claim any one of 1-6.
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