CN111884875A - Offline device determination method and device - Google Patents
Offline device determination method and device Download PDFInfo
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- CN111884875A CN111884875A CN202010700771.7A CN202010700771A CN111884875A CN 111884875 A CN111884875 A CN 111884875A CN 202010700771 A CN202010700771 A CN 202010700771A CN 111884875 A CN111884875 A CN 111884875A
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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
- H04L43/12—Network monitoring probes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/54—Presence management, e.g. monitoring or registration for receipt of user log-on information, or the connection status of the users
Abstract
The invention provides an offline equipment determination method and an offline equipment determination device, wherein the method comprises the following steps: judging whether a heartbeat packet sent by equipment at a target time which is less than the target detection time is received or not; transmitting a plurality of probe packets to the device within a time difference between the target time and the target detection time if the heartbeat packet is not received; if the response of the detection packet sent by the equipment is not received, the equipment is determined to be offline, the problem that the gateway determines that the equipment is offline when the gateway cannot receive the response of the heartbeat message for multiple times continuously in the related technology can be solved, and the time for finding the equipment to be offline is longer under the condition of high accuracy for determining the equipment to be offline.
Description
Technical Field
The invention relates to the field of information processing, in particular to an offline device determining method and device.
Background
The BLE mesh protocol is a broadcast communication protocol based on the Bluetooth technology. The overall bandwidth of the Mesh network is low and the devices should minimize the density of initiating message delivery.
In the intelligent home system based on the Mesh network, a heartbeat message exists and is periodically sent to a gateway by equipment; the gateway tracks whether the device is online by listening for heartbeat messages.
Due to the probability of packet loss (low probability event) of the heartbeat message, the gateway cannot confirm that the device has left the network if the gateway cannot receive any message from the device within a listening period. The gateway typically considers the device to be offline only when it does not receive messages for a number (N) of consecutive times (the gateway does not receive heartbeat packets for N consecutive times).
In this context, it becomes difficult to balance the three indexes of the interval of sending heartbeats by the mesh device (I, the longer the interval, the better the bandwidth occupation is, the longer the interval, the time required by the gateway to discover the device is off-line (T), and the accuracy of determining the device is off-line by the gateway (P, as close to 100% as possible).
Aiming at the problems that in the related art, when the gateway continuously receives no response of the heartbeat message for multiple times, the gateway determines that the equipment is offline, and under the condition that the accuracy of determining the equipment offline is high, the time for discovering the equipment offline is long, no solution is provided.
Disclosure of Invention
The embodiment of the invention provides an offline device determining method and device, which are used for at least solving the problems that in the related art, when a gateway cannot continuously receive response of heartbeat messages for multiple times, the gateway determines that a device is offline, and the offline time of the device is long under the condition of high offline accuracy of the device.
According to an embodiment of the present invention, there is provided an offline device determination method including:
judging whether a heartbeat packet sent by equipment at a target time which is less than the target detection time is received or not;
transmitting a plurality of probe packets to the device within a time difference between the target time and the target detection time if the heartbeat packet is not received;
and if the response of the detection packet sent by the equipment is not received, determining that the equipment is offline.
Optionally, after determining whether a heartbeat packet sent by the device at a target time less than the target detection time is received, the method further includes:
determining that the device is online if the heartbeat packet is received.
Optionally, after sending a plurality of probe packets to the device within a time difference between the target time and the target detection time, the method further includes:
judging whether a detection packet response sent by the equipment is received;
and if the response of the detection packet sent by the equipment is received, determining that the equipment is on line.
Optionally, sending a plurality of probe packets to the device within a time difference between the target time and the target detection time comprises:
transmitting the plurality of probe packets to the device within a time difference between the target time and the target detection time at a predetermined time period.
Optionally, before determining whether a heartbeat packet sent by the device at a target time less than the target detection time is received, the method further includes:
determining a number of the plurality of probe packets;
and determining the preset time period according to the number and the time difference.
According to another embodiment of the present invention, there is also provided an offline device determination apparatus, including:
the first judgment module is used for judging whether a heartbeat packet sent by equipment at a target time which is less than the target detection time is received or not;
a sending module, configured to send a plurality of probe packets to the device within a time difference between the target time and the target detection time when the heartbeat packet is not received;
a first determining module, configured to determine that the device is offline if a probe packet response sent by the device is not received.
Optionally, the apparatus further comprises:
a second determining module, configured to determine that the device is online when the heartbeat packet is received.
Optionally, the apparatus further comprises:
the second judgment module is used for judging whether a detection packet response sent by the equipment is received or not;
and the third determining module is used for determining that the equipment is on line if the response of the detection packet sent by the equipment is received.
Optionally, the sending module is further configured to
Transmitting the plurality of probe packets to the device within a time difference between the target time and the target detection time at a predetermined time period.
Optionally, the apparatus further comprises:
a fourth determining module, configured to determine the number of the plurality of probe packets;
and the fifth determining module is used for determining the preset time period according to the number and the time difference.
According to a further embodiment of the present invention, a computer-readable storage medium is also provided, in which a computer program is stored, wherein the computer program is configured to perform the steps of any of the above-described method embodiments when executed.
According to yet another embodiment of the present invention, there is also provided an electronic device, including a memory in which a computer program is stored and a processor configured to execute the computer program to perform the steps in any of the above method embodiments.
By the invention, whether the heartbeat packet sent by the equipment in the target time less than the target detection time is received or not is judged; transmitting a plurality of probe packets to the device within a time difference between the target time and the target detection time if the heartbeat packet is not received; if the response of the detection packet sent by the equipment is not received, the equipment is determined to be offline, the problem that the gateway determines that the equipment is offline when the gateway cannot receive the response of the heartbeat message for multiple times continuously in the related technology can be solved, and the time for finding the equipment to be offline is longer under the condition of high accuracy for determining the equipment to be offline.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a block diagram of a hardware configuration of a mobile terminal of an offline device determination method according to an embodiment of the present invention;
fig. 2 is a flowchart of an offline device determination method according to an embodiment of the present invention;
fig. 3 is a flow chart of the off-line of the fast signaling device in the Mesh network according to the embodiment of the present invention;
fig. 4 is a block diagram of an offline device determination apparatus according to an embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Example 1
The method provided by the first embodiment of the present application may be executed in a mobile terminal, a computer terminal, or a similar computing device. Taking a mobile terminal as an example, fig. 1 is a hardware structure block diagram of a mobile terminal of an offline device determining method according to an embodiment of the present invention, and as shown in fig. 1, the mobile terminal may include one or more processors 102 (only one is shown in fig. 1) (the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA), and a memory 104 for storing data, and optionally, the mobile terminal may further include a transmission device 106 for a communication function and an input/output device 108. It will be understood by those skilled in the art that the structure shown in fig. 1 is only an illustration, and does not limit the structure of the mobile terminal. For example, the mobile terminal may also include more or fewer components than shown in FIG. 1, or have a different configuration than shown in FIG. 1.
The memory 104 may be used to store a computer program, for example, a software program and a module of an application software, such as a computer program corresponding to the offline device determining method in the embodiment of the present invention, and the processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, so as to implement the method described above. The memory 104 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the mobile terminal over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission device 106 is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a Network adapter (NIC), which can be connected to other Network devices through a base station so as to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.
In this embodiment, an offline device determining method operating in the mobile terminal or the network architecture is provided, and fig. 2 is a flowchart of the offline device determining method according to the embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:
step S202, judging whether a heartbeat packet sent by equipment in a target time less than target detection time is received;
step S204, under the condition that the heartbeat packet is not received, a plurality of detection packets are sent to the equipment within the time difference between the target time and the target detection time;
further, in step S204, the sending a plurality of probe packets to the device within the time difference between the target time and the target detection time may specifically include: transmitting the plurality of probe packets to the device within a time difference between the target time and the target detection time at a predetermined time period.
Step S206, if the response of the probe packet sent by the device is not received, it is determined that the device is offline.
Through the steps S202 to S206, it is determined whether a heartbeat packet sent by the device at a target time that is less than the target detection time is received; transmitting a plurality of probe packets to the device within a time difference between the target time and the target detection time if the heartbeat packet is not received; if the response of the detection packet sent by the equipment is not received, the equipment is determined to be offline, the problem that the gateway determines that the equipment is offline when the gateway cannot receive the response of the heartbeat message for multiple times continuously in the related technology can be solved, and the time for finding the equipment to be offline is longer under the condition of high accuracy for determining the equipment to be offline.
In an optional embodiment, after determining whether a heartbeat packet sent by a device at a target time less than a target detection time is received, in the case that the heartbeat packet is received, it is determined that the device is online.
In another optional embodiment, after sending a plurality of probe packets to the device within the time difference between the target time and the target detection time, determining whether a probe packet response sent by the device is received; and if the response of the detection packet sent by the equipment is received, determining that the equipment is on line.
In another optional embodiment, before determining whether a heartbeat packet sent by the device at a target time less than the target detection time is received, determining the number of the plurality of probe packets; and determining the preset time period according to the number and the time difference.
In the embodiment of the invention, the equipment sends heartbeat packets at an interval (I') which is slightly less than target detection time; when the gateway finds that no heartbeat packet is received within an interval (I '), several rounds of probing (completed before the target detection time expires) are performed immediately (I' to I). The probing method is to send a probe packet to the device and wait for a response. If no response is received by multiple probes, the device is considered offline. Fig. 3 is a flowchart of an offline fast signaling device in a Mesh network according to an embodiment of the present invention, as shown in fig. 3, including:
step S301, the device sends heartbeat packets to the gateway, specifically, the device sends heartbeat packets at an interval slightly less than target detection time, namely slightly less than the target detection time in the related technology;
step S302, the gateway judges whether a heartbeat packet is received, if so, the step S303 is executed, otherwise, the step S304 is executed;
step S303, determining that the equipment is on line;
step S304, the gateway immediately sends a plurality of detection packets to the equipment, specifically, sends a plurality of detection messages in a certain time period before reaching the target detection time;
step S305, the gateway judges whether the response of the detection packet sent by the equipment is received, if so, the step S304 is executed, otherwise, the step S306 is executed;
step S306, determining that the equipment is off-line.
Assuming that in the prior art, the time interval of the heartbeat packets is I, the number of the heartbeat packets sent by the device offline is N, and the probability of the heartbeat packet loss is R (0< R <1), the time length required by finding the device offline is T > ═ I × N, and the accuracy of the device offline is determined to be P ═ 1-R ^ N. Assuming that the number of heartbeat packets sent by the device offline is detected to be N ═ 3, the time length required for detecting that the device is offline in the prior art is T ═ I × 3 at the shortest.
In the embodiment of the present invention, the heartbeat interval I' is set to be slightly smaller than I (e.g., I × 0.9).
When the gateway finds that the packet is lost once, the gateway immediately sends a detection packet to the equipment and waits for a response. Normally, probe packet responses are received in a very short time; the probability R of the response packet loss of the probe packet is slightly higher than the probability R of the packet loss of the heartbeat packet. If no response is received, the gateway may continue to send probe packets for I' to I. Generally, after 3 subsequent detection rounds, the accuracy of determining that the device is offline is P ═ 1-R ^3< P, the embodiment of the present invention detects that the number of heartbeat packets sent offline by the device is n ═ 1, and the time length for detecting that the device is offline is t ═ I. If the equipment is off-line, the gateway can be caused to send more detection packets; if packet loss occurs, it causes both the device and the gateway to send several rounds of probes/responses. By the embodiment of the invention, the density of the heartbeat packet of the whole network is reduced to about 1/N of the original scheme.
If the device is offline, the prior art detects that the number of heartbeat packets sent offline by the device is N, but the embodiment of the present invention only needs 1 heartbeat packet + several detection packets, where the detection packets are actively sent to the device by the gateway/server, and the density of the heartbeat packets is reduced to 1/N in the prior art. Meanwhile, if the device is offline, the time required for discovering that the device is offline also becomes 1/N of the prior art.
By the embodiment of the invention, the accuracy of determining the offline of the equipment at the gateway is increased, and the density of heartbeat packets and the time required for discovering the offline of the equipment are reduced. The bandwidth occupied by the offline discovery equipment is low, the time is short, and the accuracy is high.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
Example 2
In this embodiment, an offline device determining apparatus is further provided, where the apparatus is used to implement the foregoing embodiments and preferred embodiments, and details of the foregoing description are omitted for brevity. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 4 is a block diagram of an offline device determining apparatus according to an embodiment of the present invention, as shown in fig. 4, including:
a first judging module 42, configured to judge whether a heartbeat packet sent by a device at a target time that is less than a target detection time is received;
a sending module 44, configured to send a plurality of probe packets to the device within a time difference between the target time and the target detection time when the heartbeat packet is not received;
a first determining module 46, configured to determine that the device is offline if a probe packet response sent by the device is not received.
Optionally, the apparatus further comprises:
a second determining module, configured to determine that the device is online when the heartbeat packet is received.
Optionally, the apparatus further comprises:
the second judgment module is used for judging whether a detection packet response sent by the equipment is received or not;
and the third determining module is used for determining that the equipment is on line if the response of the detection packet sent by the equipment is received.
Optionally, the sending module 44 is further configured to
Transmitting the plurality of probe packets to the device within a time difference between the target time and the target detection time at a predetermined time period.
Optionally, the apparatus further comprises:
a fourth determining module, configured to determine the number of the plurality of probe packets;
and the fifth determining module is used for determining the preset time period according to the number and the time difference.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.
Example 3
Embodiments of the present invention also provide a computer-readable storage medium, in which a computer program is stored, wherein the computer program is configured to perform the steps of any of the above method embodiments when executed.
Alternatively, in the present embodiment, the storage medium may be configured to store a computer program for executing the steps of:
s1, judging whether a heartbeat packet sent by the equipment in a target time less than the target detection time is received;
s2, sending a plurality of probe packets to the device within a time difference between the target time and the target detection time when the heartbeat packet is not received;
s3, if the response of the detection packet sent by the equipment is not received, the equipment is determined to be off-line.
Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Example 4
Embodiments of the present invention also provide an electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the steps of any of the above method embodiments.
Optionally, the electronic apparatus may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.
Optionally, in this embodiment, the processor may be configured to execute the following steps by a computer program:
s1, judging whether a heartbeat packet sent by the equipment in a target time less than the target detection time is received;
s2, sending a plurality of probe packets to the device within a time difference between the target time and the target detection time when the heartbeat packet is not received;
s3, if the response of the detection packet sent by the equipment is not received, the equipment is determined to be off-line.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An offline device determination method, comprising:
judging whether a heartbeat packet sent by equipment at a target time which is less than the target detection time is received or not;
transmitting a plurality of probe packets to the device within a time difference between the target time and the target detection time if the heartbeat packet is not received;
and if the response of the detection packet sent by the equipment is not received, determining that the equipment is offline.
2. The method of claim 1, wherein after determining whether a heartbeat packet is received that is sent by a device at a target time that is less than a target detection time, the method further comprises:
determining that the device is online if the heartbeat packet is received.
3. The method of claim 1, wherein after transmitting a plurality of probe packets to the device within a time difference between the target time and the target detection time, the method further comprises:
judging whether a detection packet response sent by the equipment is received;
and if the response of the detection packet sent by the equipment is received, determining that the equipment is on line.
4. The method of any of claims 1-3, wherein sending a plurality of probe packets to the device within a time difference between the target time and the target detection time comprises:
transmitting the plurality of probe packets to the device within a time difference between the target time and the target detection time at a predetermined time period.
5. The method of claim 4, wherein prior to determining whether a heartbeat packet is received that the device sent at a target time that is less than a target detection time, the method further comprises:
determining a number of the plurality of probe packets;
and determining the preset time period according to the number and the time difference.
6. An offline device determination apparatus, comprising:
the first judgment module is used for judging whether a heartbeat packet sent by equipment at a target time which is less than the target detection time is received or not;
a sending module, configured to send a plurality of probe packets to the device within a time difference between the target time and the target detection time when the heartbeat packet is not received;
a first determining module, configured to determine that the device is offline if a probe packet response sent by the device is not received.
7. The apparatus of claim 6, further comprising:
a second determining module, configured to determine that the device is online when the heartbeat packet is received.
8. The apparatus of claim 6, further comprising:
the second judgment module is used for judging whether a detection packet response sent by the equipment is received or not;
and the third determining module is used for determining that the equipment is on line if the response of the detection packet sent by the equipment is received.
9. A computer-readable storage medium, in which a computer program is stored, wherein the computer program is configured to carry out the method of any one of claims 1 to 5 when executed.
10. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the method of any of claims 1 to 5.
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| CN202010700771.7A CN111884875A (en) | 2020-07-17 | 2020-07-17 | Offline device determination method and device |
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| CN202010700771.7A CN111884875A (en) | 2020-07-17 | 2020-07-17 | Offline device determination method and device |
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| CN112422369A (en) * | 2020-11-19 | 2021-02-26 | 青岛海尔科技有限公司 | Method and device for determining offline time, storage medium and electronic device |
| CN112994971A (en) * | 2021-02-01 | 2021-06-18 | 阳光电源(南京)有限公司 | Equipment offline monitoring method based on cloud server and related device |
| CN115801645A (en) * | 2021-09-10 | 2023-03-14 | 佛山市云米电器科技有限公司 | Online state detection method and device for equipment |
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| CN111181804A (en) * | 2019-12-20 | 2020-05-19 | 中移（杭州）信息技术有限公司 | Intelligent device offline state automatic detection method and device, electronic device and medium |
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| CN112422369A (en) * | 2020-11-19 | 2021-02-26 | 青岛海尔科技有限公司 | Method and device for determining offline time, storage medium and electronic device |
| CN112994971A (en) * | 2021-02-01 | 2021-06-18 | 阳光电源(南京)有限公司 | Equipment offline monitoring method based on cloud server and related device |
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Application publication date: 20201103 |