CN110868706B - Network link checking method, device, equipment and storage medium - Google Patents
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Abstract
The disclosure provides a network link checking method, device, equipment and storage medium. In response to receiving a network link check request instruction sent by a node through a base station, recording identification information of the base station through which the network link check request instruction passes; based on the identification information, carrying out duplicate elimination processing on the received network link inspection request instructions corresponding to the same base station in a network link inspection request instruction set sent by the same node through a plurality of base stations; and determining the number of base stations of a plurality of base stations based on the number of the network link check request commands subjected to the rearrangement processing, and/or determining uplink quality data capable of representing the signal quality of an uplink based on the network link check request commands selected from the network link check request command set subjected to the rearrangement processing. Therefore, the data required by the network link inspection can be obtained more accurately.
Description
Technical Field
The present disclosure relates to the field of network communications, and in particular, to a method, an apparatus, a device, and a storage medium for checking a network link.
Background
Before a LoRaWAN terminal is deployed, the network condition needs to be checked, and the LoRaWAN protocol describes a pair of network link check instructions LinkCheckReq and LinkCheckAns.
A node may check a link using a LinkCheckReq instruction, which does not contain a payload. After receiving the LinkCheckReq command transmitted by one or more base stations, the NS replies a LinkCheckAns command to the corresponding node. The LinkCheckAns instruction contains a Margin field and a GwCnt field. The Margin field is an 8-bit unsigned integer ranging from 0 to 254, indicating the quality of the uplink signal. The GwCnt field is also an 8-bit unsigned integer indicating the number of gateways (base stations) in the LinkCheckReq command uplink that receive the command.
After receiving the linkceckreq command, the base station may repeat uplink. In view of this situation, how to reply to the LinkCheckAns instruction by the NS is a problem that needs to be solved.
Disclosure of Invention
An object of the present disclosure is to provide a network link checking scheme to solve a base station duplicate uplink problem.
According to a first aspect of the present disclosure, a network link checking method is provided, including: in response to receiving a network link check request instruction sent by a node through a base station, recording identification information of the base station through which the network link check request instruction passes; based on the identification information, carrying out duplicate elimination processing on the network link inspection request instructions corresponding to the same base station in the network link inspection request instruction set sent by the same node through a plurality of base stations; and determining the number of base stations of a plurality of base stations based on the number of the network link check request commands subjected to the rearrangement processing, and/or determining uplink quality data capable of representing the signal quality of an uplink based on the network link check request commands selected from the network link check request command set subjected to the rearrangement processing.
Optionally, the step of performing duplicate removal processing on the network link check request instruction corresponding to the same base station in the network link check request instruction set includes: and performing rearrangement processing according to the uplink signal quality of the received network link inspection request instruction so as to reserve the network link inspection request instruction with better uplink signal quality of the same base station.
Optionally, the uplink quality data comprises an uplink signal-to-noise ratio and/or an uplink received signal strength.
Optionally, the step of determining uplink quality data capable of characterizing the signal quality of the uplink comprises: selecting a network link inspection request instruction from the network link inspection request instruction set subjected to the rearrangement processing according to the quality of the uplink signal; and determining uplink quality data based on the uplink signal-to-noise ratio at which the selected network link check request command was received and the minimum uplink signal-to-noise ratio at which the network link check request command can be received.
Optionally, the uplink quality data is equal to a difference between the uplink signal-to-noise ratio and a minimum uplink signal-to-noise ratio.
Optionally, the network link checking method further includes: and sending a network link check reply instruction to the node, wherein the network link check reply instruction comprises the base station number and the uplink quality data.
According to the second aspect of the present disclosure, there is also provided a network link checking apparatus, including: the recording module is used for responding to a received network link check request instruction sent by a node through a base station and recording the identification information of the base station through which the network link check request instruction passes; the duplicate removal module is used for carrying out duplicate removal processing on the received network link inspection request instructions corresponding to the same base station in the network link inspection request instruction set sent by the same node through a plurality of base stations based on the identification information; and the first determining module is used for determining the number of the base stations of the plurality of base stations based on the number of the network link check request commands subjected to the rearrangement processing, and/or the second determining module is used for determining uplink quality data capable of representing the signal quality of the uplink based on the network link check request commands selected from the network link check request command set subjected to the rearrangement processing.
Optionally, the duplicate removal module performs duplicate removal processing according to the uplink signal quality of the received network link check request instruction, so as to reserve a network link check request instruction with a better uplink signal quality of the same base station.
Optionally, the uplink signal quality includes an uplink signal-to-noise ratio and/or an uplink received signal strength.
Optionally, the second determining module includes: the selecting module is used for selecting a network link inspection request instruction from the network link inspection request instruction set subjected to the rearrangement processing according to the quality of the uplink signal; and a calculation module for determining uplink quality data based on the uplink signal-to-noise ratio at which the selected network link check request command is received and the minimum uplink signal-to-noise ratio at which the network link check request command can be received.
Optionally, the uplink quality data is equal to a difference between the uplink signal-to-noise ratio and a minimum uplink signal-to-noise ratio.
Optionally, the network link checking apparatus further includes: and the sending module is used for sending a network link check reply instruction to the node, wherein the network link check reply instruction comprises the base station number and the uplink quality data.
According to a third aspect of the present disclosure, there is also presented a computing device comprising: a processor; and a memory having executable code stored thereon, which when executed by the processor, causes the processor to perform the method as set forth in the first aspect of the disclosure.
According to a fourth aspect of the present disclosure, there is also presented a non-transitory machine-readable storage medium having stored thereon executable code, which when executed by a processor of an electronic device, causes the processor to perform the method as set forth in the first aspect of the present disclosure.
According to the method and the device, when the base station quantity data (GwCnt value) and/or the uplink quality data (Margin value) required by link inspection are/is calculated, repeated accumulation of the same base station can be eliminated, and the accuracy of the calculation result is improved.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in greater detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 is a schematic flow chart diagram illustrating a network link inspection method according to an embodiment of the present disclosure.
Fig. 2 is a flow chart illustrating network link check between a node and a network server according to an embodiment of the disclosure.
Fig. 3 is a schematic block diagram showing the structure of a network link check apparatus according to an embodiment of the present disclosure.
Fig. 4 is a schematic block diagram showing the structure of a functional block that the second determination module in fig. 3 may have.
Fig. 5 shows a schematic structural diagram of a computing device that can be used to implement the network link check method according to an embodiment of the present disclosure.
Detailed Description
Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[ term interpretation ]
LoRa: a low-power consumption long-distance wireless transmission scheme based on a spread spectrum technology.
LoRaWAN: the Low Power Wide Area Network (LPWAN) standard, which is introduced by the LoRa alliance and is based on an open source MAC layer protocol. This technology can provide a low power consumption, scalable long-range wireless network for battery-powered wireless devices.
And NS: namely Network Server, network Server.
payload is the message payload.
A base station: also referred to as a gateway, is a device that passes wireless network signals of the node through a backhaul network to the NS.
And (3) EUI: the device unique identification code is a globally unique ID similar to IEEE EUI64, and corresponds to the MAC address of the device.
[ METHOD FOR CHECKING NETWORK LINKS ]
Fig. 1 is a schematic flow chart diagram illustrating a network link checking method according to an embodiment of the present disclosure. Wherein the method shown in fig. 1 may be performed by a Network Server (NS).
Referring to fig. 1, in step S110, in response to receiving a network link check request instruction sent by a node through a base station, identification information of the base station through which the network link check request instruction passes is recorded.
A network link check request command (LinkCheckReq) sent by a node may be received by multiple base stations and forwarded (e.g., transmitted) to a network server. Thus, the network server may receive a plurality of network link check instructions. Also, the same base station may repeatedly send network link check requests. Therefore, there may be a case where a plurality of network link check instructions are transmitted from the same base station in the network link check instruction set received by the network server from the same node.
In order to facilitate accurate acquisition of the number of base stations that successfully receive the network link check request instruction, the present disclosure provides that identification information of the base station through which each received network link check request instruction passes may be recorded. The identification information is used to characterize the base station, and may be a unique identification code of the base station, such as the base station EUI.
In step S120, based on the identification information, a duplicate elimination process is performed on the received network link check request commands corresponding to the same base station in the network link check request command set sent by the same node through multiple base stations.
The network link check request instruction set comprises all received repeated network link check request instructions sent by the same node. As an example, the network link check request instruction sent by the same node may be determined according to the node short address (DevAddr), the device identification number (DevEUI) of the node, and the like in the received network link check request instruction, and further, whether the network link check request instruction belongs to the duplicate network link check request instruction may be determined according to a counter (FCntUp) in the network link check request instruction to obtain the network link check request instruction set. In addition, the network link check request instruction set may also be determined in other various manners, which are not described herein again.
According to the identification information of the base station corresponding to the received network link check request instruction recorded before, the network link check request instruction set corresponding to the same base station can be subjected to duplicate elimination processing, that is, only one duplicate network link check request instruction uploaded by the same base station is reserved. The reservation mechanism may be configured to perform re-ordering according to the uplink signal quality (e.g., uplink signal-to-noise ratio and/or uplink received signal strength) of the received network link check request command, i.e., to reserve the network link check request command with better uplink signal quality.
In step S130, the number of base stations of the plurality of base stations is determined based on the number of the network link check request commands subjected to the rearrangement processing, and/or uplink quality data capable of characterizing the quality of the uplink signal is determined based on the network link check request commands selected from the network link check request command set subjected to the rearrangement processing.
The network link check requests in the network link check request set after the rearrangement are all sent by different base stations. Therefore, the number of network link check request commands subjected to the rearrangement processing can be determined as the number of base stations.
When determining the uplink quality data, the network link check request command may be first selected from the network link check request command set after the rearrangement processing, for example, the network link check request command may be selected from the network link check request command set after the rearrangement processing according to the uplink signal quality, for example, the network link check request command with the best uplink signal quality may be selected. The uplink Signal quality may be data such as an uplink Signal-to-Noise Ratio (SNR) and/or an uplink Signal Received Strength (RSSI).
As one example of the present disclosure, the uplink quality data may be determined based on an uplink signal-to-noise ratio at which the selected network link check request instruction is received and a minimum uplink signal-to-noise ratio at which the network link check request instruction can be received. For example, the uplink quality data may be equal to a difference between the uplink signal-to-noise ratio and the minimum uplink signal-to-noise ratio. In addition, the link budget of the selected network link check request instruction may also be calculated as the uplink quality data, and certainly, the uplink quality data may also be determined in other various manners, which is not described herein again.
After obtaining the base station number and/or uplink quality data, a network link check reply command may be sent to the node, where the network link check reply command may include the base station number and/or uplink quality data.
In one embodiment of the present disclosure, the number of base stations may be encapsulated as first data conforming to a predetermined data type, such as data that may be encapsulated as 8-bit unsigned integer, as GwCnt field data. And/or the uplink quality data may also be encapsulated as second data conforming to a predetermined data type, such as data that may be encapsulated as 8-bit unsigned integer, as a Margin field data. A network link check reply directive (linkceckans) for the network link check request directive may then be sent to the node, where the network link check reply directive may include the first data and the second data, i.e., the GwCnt field and the Margin field.
Fig. 2 is a flow chart illustrating network link check between a node and a network server according to an embodiment of the present disclosure. Wherein, the node may be a loran node supporting loran protocol, and the Network Server (NS) may be loran server. The node may send uplink data to the NS through one or more base stations according to the LoRaWAN protocol, and the NS may also send downlink data to the node through one or more base stations. In addition, the distribution of the base station through which the uplink data passes and the base station through which the downlink data passes may not be completely the same.
As shown in fig. 2, the node side may initiate a LinkCheckReq instruction according to the LoRaWAN protocol, and the node may repeatedly issue the LinkCheckReq instruction.
The LinkCheckReq instruction initiated by the node side may be received by one or more base stations, and the base station may pass the linkceckreq instruction sent by the node through the LoRa wireless signal to the NS after receiving the linkceckreq instruction.
The NS may record the base station EUI of each uplink LinkCheckReq command and record the uplink RF information (which may be, for example, uplink signal-to-noise ratio and/or uplink received signal strength).
Based on the base station EUI, the NS can obtain the number of base stations in the link that the command has passed through in the uplink, thereby calculating the GwCnt value. As an example, the NS may accumulate the number of gwgnts in the link using a redissetaddwithexpiredtime method and acquire the number of gwgnts in the link using a redis scald method.
Based on the RF information, the NS may select an optimal route (i.e., an optimal base station), and calculate a Margin value in the LinkCheckAns instruction based on an uplink snr of the optimal route. As an example, when calculating the Margin value, it can be obtained by calculating (SNR) r- (SNR) rmin, where (SNR) r refers to the SNR value of the signal obtained by the receiving side, and (SNR) rmin refers to the SNR value at which the receiving side has the minimum signal to receive the signal.
Next, the NS may issue an assembled LinkCheckAns command to the base station, where the LinkCheckAns command includes a GwGnt field and a Margin field. The base station may further issue a LinkCheckAns instruction to the node. The node may process the LinkCheckAns instruction according to the LoRaWAN protocol to check out the condition of the network link.
Thus, the present disclosure can be implemented as a calculation method of GwCnt values and Margin values required for link inspection in LoRaWAN. When the method is used for calculating the GwCnt value, repeated accumulation of the same base station can be eliminated, so that the calculated GwCnt value is accurate. And the Margin value in the LinkCheckAns instruction can be calculated according to the uplink signal-to-noise ratio of the optimal route. The calculation process can be independent of configuration, and the NS end has high concurrency performance.
[ NETWORK LINK CHECKING APPARATUS ]
Fig. 3 is a schematic block diagram illustrating the structure of a network link inspection apparatus according to an embodiment of the present disclosure. Wherein the functional blocks of the network link check device may be implemented by hardware, software, or a combination of hardware and software that implement the principles of the present disclosure. It will be appreciated by those skilled in the art that the functional blocks depicted in fig. 3 may be combined or divided into sub-blocks to implement the inventive principles described above. Thus, the description herein may support any possible combination, or division, or further definition of the functional modules described herein.
The functional modules that the network link check device can have and the operations that each functional module can perform are briefly described below, and the details related thereto may be referred to the above description, and are not described herein again.
Referring to fig. 3, the network link inspection apparatus 300 includes a recording module 310, a deduplication module 320, a first determination module 330, and/or a second determination module 340.
The recording module 310 is configured to record, in response to receiving a network link check request instruction sent by a node through a base station, identification information of the base station through which the network link check request instruction passes. The duplicate removal module 320 is configured to perform duplicate removal processing on the received network link check request instruction corresponding to the same base station in the network link check request instruction set that is sent by the same node through multiple base stations based on the identification information. As an example, the deduplication module 320 may perform deduplication processing according to the uplink signal quality of the received network link check request instruction, so as to reserve the network link check request instruction with better uplink signal quality of the same base station. The uplink signal quality may include an uplink signal-to-noise ratio and/or an uplink received signal strength.
The first determining module 330 is configured to determine the number of base stations of the plurality of base stations based on the number of network link check request commands after the duplicate elimination processing. The second determining module 340 is configured to determine uplink quality data capable of characterizing the quality of the uplink signal based on a network link check request command selected from the network link check request command set after the re-ordering process.
As shown in fig. 4, the second determining module 340 may further include a selecting module 3410 and a calculating module 3420. The selecting module 3410 is configured to select a network link check request command from the network link check request command set after the deduplication processing according to the uplink signal quality. The calculation module 3420 is configured to determine the uplink quality data based on the uplink snr at which the selected network link check request command is received and the minimum uplink snr at which the network link check request command can be received. For example, the calculating module 3420 may obtain the uplink quality data by calculating the difference between the uplink snr and the minimum uplink snr.
As an example of the present disclosure, the network link check device 300 may further optionally include a transmitting module (not shown in the figure). The sending module is used for sending a network link check reply instruction to the node, wherein the network link check reply instruction comprises the base station number and the uplink quality data.
As an example of the present disclosure, the network link check device 300 may further optionally include a first encapsulation module and/or a second encapsulation module (not shown in the figures). The first encapsulating module is used for encapsulating the base station quantity into first data which accords with a preset data type, and the second encapsulating module is used for encapsulating the uplink quality data into second data which accords with the preset data type. Wherein the predetermined data type may be 8-bit unsigned integer. Wherein the first data may be a GwCnt field and the second data may be a Margin field.
[ computing device ]
Fig. 5 shows a schematic structural diagram of a computing device that can be used to implement the network link check method according to an embodiment of the present disclosure.
Referring to fig. 5, computing device 500 includes memory 510 and processor 520.
The processor 520 may be a multi-core processor or may include multiple processors. In some embodiments, processor 520 may include a general-purpose host processor and one or more special coprocessors such as a Graphics Processor (GPU), a Digital Signal Processor (DSP), or the like. In some embodiments, processor 520 may be implemented using custom circuitry, such as an Application Specific Integrated Circuit (ASIC) or a Field Programmable Gate Array (FPGA).
The memory 510 may include various types of storage units, such as system memory, read Only Memory (ROM), and a persistent storage device. Wherein the ROM may store static data or instructions for the processor 520 or other modules of the computer. The persistent storage device may be a read-write storage device. The persistent storage may be a non-volatile storage device that does not lose stored instructions and data even after the computer is powered off. In some embodiments, the persistent storage device employs a mass storage device (e.g., magnetic or optical disk, flash memory) as the persistent storage device. In other embodiments, the permanent storage may be a removable storage device (e.g., floppy disk, optical drive). The system memory may be a read-write memory device or a volatile read-write memory device, such as a dynamic random access memory. The system memory may store instructions and data that some or all of the processors require at run-time. Further, the memory 510 may comprise any combination of computer-readable storage media, including various types of semiconductor memory chips (DRAM, SRAM, SDRAM, flash, programmable read only memory), magnetic and/or optical disks may also be employed. In some embodiments, memory 510 may include a removable storage device that is readable and/or writable, such as a Compact Disc (CD), a read-only digital versatile disc (e.g., DVD-ROM, dual layer DVD-ROM), a read-only Blu-ray disc, an ultra-density optical disc, a flash memory card (e.g., SD card, min SD card, micro-SD card, etc.), a magnetic floppy disc, or the like. Computer-readable storage media do not contain carrier waves or transitory electronic signals transmitted by wireless or wired means.
The memory 510 has stored thereon executable code that, when executed by the processor 520, may cause the processor 520 to perform the network link check method described above.
The network link check method, apparatus and computing device according to the present disclosure have been described in detail above with reference to the accompanying drawings.
Furthermore, the method according to the present disclosure may also be implemented as a computer program or computer program product comprising computer program code instructions for performing the above-mentioned steps defined in the above-mentioned method of the present disclosure.
Alternatively, the present disclosure may also be embodied as a non-transitory machine-readable storage medium (or computer-readable storage medium, or machine-readable storage medium) having stored thereon executable code (or a computer program, or computer instruction code) which, when executed by a processor of an electronic device (or computing device, server, etc.), causes the processor to perform the various steps of the above-described method according to the present disclosure.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein may be implemented as electronic hardware, computer software, or combinations of both.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems and methods according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or improvements to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (9)
1. A method for network link inspection, comprising:
in response to receiving a network link check request instruction sent by a node through a base station, recording identification information of the base station through which the network link check request instruction passes;
performing duplicate elimination processing on the received network link inspection request instructions corresponding to the same base station in a network link inspection request instruction set sent by the same node through a plurality of base stations based on the identification information so as to only reserve one of a plurality of repeated network link inspection request instructions uploaded by the same base station;
determining the number of base stations of the plurality of base stations based on the number of the network link inspection request commands subjected to the rearrangement processing, and/or determining uplink quality data capable of representing the signal quality of an uplink based on the network link inspection request commands selected from the network link inspection request command set subjected to the rearrangement processing; and
transmitting a network link check reply instruction to the node, wherein the network link check reply instruction comprises the number of base stations and/or the uplink quality data.
2. The method of claim 1, wherein the step of performing duplicate handling on the network link check request commands corresponding to the same base station in the network link check request command set comprises:
and performing rearrangement processing according to the uplink signal quality of the received network link inspection request instruction so as to reserve the network link inspection request instruction with better uplink signal quality of the same base station.
3. The network link check method of claim 2,
the uplink signal quality comprises an uplink signal-to-noise ratio and/or an uplink received signal strength.
4. The method of claim 1, wherein the step of determining uplink quality data that characterizes the uplink signal quality comprises:
selecting a network link inspection request instruction from the network link inspection request instruction set subjected to the rearrangement processing according to the quality of the uplink signal; and
the uplink quality data is determined based on the uplink signal-to-noise ratio at which the selected network link check request command was received and the minimum uplink signal-to-noise ratio at which the network link check request command can be received.
5. The network link check method of claim 4,
the uplink quality data is equal to a difference between the uplink signal-to-noise ratio and the minimum uplink signal-to-noise ratio.
6. A network link check device, comprising:
the system comprises a recording module, a receiving module and a processing module, wherein the recording module is used for responding to a received network link check request instruction sent by a node through a base station and recording the identification information of the base station through which the network link check request instruction passes;
the duplicate removal module is used for performing duplicate removal processing on the received network link inspection request instructions corresponding to the same base station in a network link inspection request instruction set sent by the same node through a plurality of base stations based on the identification information so as to only reserve one of a plurality of duplicate network link inspection request instructions uploaded by the same base station;
the first determining module is used for determining the number of the base stations of the plurality of base stations based on the number of the network link inspection request commands subjected to the rearrangement processing, and/or the second determining module is used for determining uplink quality data capable of representing the signal quality of an uplink based on the network link inspection request commands selected from the network link inspection request command set subjected to the rearrangement processing; and
a sending module, configured to send a network link check reply instruction to the node, where the network link check reply instruction includes the number of base stations and/or the uplink quality data.
7. The apparatus according to claim 6, wherein the re-ordering module performs re-ordering processing to reserve the network link check request command with better uplink signal quality of the same base station according to the uplink signal quality of the received network link check request command.
8. A computing device, comprising:
a processor; and
a memory having executable code stored thereon, which when executed by the processor, causes the processor to perform the method of any of claims 1 to 5.
9. A non-transitory machine-readable storage medium having stored thereon executable code, which when executed by a processor of an electronic device, causes the processor to perform the method of any of claims 1-5.
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| CN107769899A (en) * | 2016-08-19 | 2018-03-06 | 株式会社Ntt都科摩 | Notice determines method, user equipment and the base station of uplink data repeat pattern |
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