CN114025364A - Method and system for reducing communication delay based on conflict algorithm - Google Patents
Method and system for reducing communication delay based on conflict algorithm Download PDFInfo
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Abstract
The invention provides a method and a system for reducing communication delay based on a collision algorithm, wherein the method comprises the following steps: starting a lower computer to acquire data and establishing wireless network connection between the lower computer and a base station; the lower computer initiates a connection request to the upper computer, and if the connection is successful, a data packet is sent by the lower computer, wherein the data packet comprises a timestamp and sampling data of a preset communication time point; the lower computer adjusts the preset communication parameters according to the time offset value to finish reducing the communication time delay; the invention can distribute time deviant for the instrument with network connection communication time delay by using conflict algorithm on the application system without changing the existing network architecture and increasing the hardware resource of the base station, and statistically analyze the adjusted communication time delay.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and system for reducing communication latency based on a collision algorithm.
Background
With the application speed of the industrial internet of things being increased, more and more field instruments and meters are in communication connection and data transmission through NBIoT, 4G/5G and other wireless networks, and a three-layer framework with a bottom layer of wireless intelligent instruments and meters, a middle layer of operator base stations and the Internet and a top layer of a business application management system is formed.
However, the operator base station has a limited number of real-time online connections to the wireless communication device, and there is an uncertain time delay between a short-time batch of connection requests and data transmission, which causes problems of inconsistent timestamps and difficult direct application of data in instrument and meter data acquired by a service application system. On one hand, if the top application system needs to acquire the collected data at the same time point, the field instruments can simultaneously initiate network connection, but the base station has limited load capacity and cannot simultaneously process the data, so that the connection time is different, and if the number of the instruments is large, the time difference between the first time and the last time is very large; on the other hand, when the meter is waiting for connection with the base station, the communication sub-thread of the meter itself belongs to a waiting suspension state, which results in waste of system resources.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, the present invention provides a method and system for reducing communication delay based on collision algorithm to solve the above-mentioned technical problems.
The invention provides a method for reducing communication delay based on a collision algorithm, which comprises the following steps:
starting a lower computer to acquire data, and establishing wireless network connection between the lower computer and a base station;
the lower computer initiates a connection request to the upper computer, and if the connection is successful, a data packet is sent by the lower computer, wherein the data packet comprises a timestamp and sampling data of a preset communication time point; if the connection fails, continuing to try connection;
the lower computer adjusts the preset communication parameters according to the time offset value to finish reducing the communication time delay;
the obtaining mode of the time offset value comprises the following steps:
the upper computer acquires and caches all data packets under the base station, and calculates the time delay of each data packet according to the time stamp so as to acquire the average time delay;
and when the average time delay is higher than a preset value, acquiring the time deviation value by utilizing a conflict algorithm according to the time stamp and the average time delay.
In an embodiment of the present invention, before initiating the connection request to the upper computer, the method further includes:
and judging whether the current internal clock of the lower computer is consistent with the preset communication parameters, and if so, initiating a connection request to the upper computer through the lower computer.
In an embodiment of the present invention, the Time stamps include a Time stamp Time1 for the lower computer to initiate connection and a Time stamp Time2 for the successful connection, and the Time delay of each data packet is obtained through Time2 to Time 1.
In an embodiment of the present invention, the time offset value is obtained by the following formula:
F(Time2-Time1)＝(DelayAll div Delay)*(Time2-Time1)
the Time1 is a timestamp for initiating connection, the Time2 is a timestamp for successful connection, the delayal is average Time Delay, and the Delay is a preset value.
In an embodiment of the present invention, the adjusting, by the lower computer, the preset communication parameter according to the time offset value includes:
and taking the sum of the preset communication parameter and the time deviation value as a new communication parameter, and adopting the new communication parameter to carry out subsequent consistency judgment with the current internal clock of the lower computer.
In an embodiment of the present invention, after determining that the current internal clock of the lower computer is consistent with the preset communication parameter, the method further includes:
if the communication time window period is met, initiating a connection request to an upper computer through the lower computer;
if the connection fails, the connection is attempted again by waiting for the next communication time window.
The invention also provides a method for reducing communication delay based on a collision algorithm, which comprises the following steps:
the method comprises the steps that an upper computer receives a connection request of a lower computer, and if the connection is successful, a data packet is sent through the lower computer and comprises a timestamp and sampling data of a preset communication time point;
acquiring the time delay of the lower computer according to the time stamp;
the upper computer distributes a time deviation value to the lower computer with high time delay to adjust the preset communication parameters of the lower computer, so as to reduce the communication time delay;
the obtaining mode of the time offset value comprises the following steps:
the upper computer acquires and caches all data packets under the base station, and calculates the time delay of each data packet according to the time stamp so as to acquire the average time delay;
and when the average time delay is higher than a preset value, acquiring the time deviation value by utilizing a conflict algorithm according to the time stamp and the average time delay.
The invention also provides a system for reducing communication time delay based on the conflict algorithm, which comprises an upper computer, a base station and a lower computer, wherein the lower computer comprises
The request module is used for initiating a connection request to the upper computer;
the data sending module is used for sending a data packet through the lower computer, wherein the data packet comprises a timestamp and sampling data of a preset communication time point;
the parameter adjusting module is used for adjusting the preset communication parameters according to the time offset value to finish reducing the communication time delay;
the time offset value calculating module is used for calculating the time delay of each data packet according to the time stamp so as to obtain the average time delay; and when the average time delay is higher than a preset value, acquiring the time deviation value by utilizing a conflict algorithm according to the time stamp and the average time delay.
The present invention also provides a computer-readable storage medium having stored thereon a computer program characterized in that: the computer program, when executed by a processor, implements the method of any of the above.
The present invention also provides an electronic terminal, comprising: a processor and a memory;
the memory is adapted to store a computer program and the processor is adapted to execute the computer program stored by the memory to cause the terminal to perform the method as defined in any one of the above.
The invention has the beneficial effects that: the method and the system for reducing the communication delay based on the conflict algorithm can distribute the time offset value for the instrument with the network connection communication delay on an application system by using the conflict algorithm on the premise of not changing the existing network architecture and not increasing the hardware resources of the base station, statistically analyze the adjusted communication delay, and if the effect is not ideal, calculate and distribute the time offset value again until the time offset value is in line with the expected delay.
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Fig. 1 is a network topology diagram of a method for reducing communication delay based on a collision algorithm in an embodiment of the present invention.
Fig. 2 is a flowchart illustrating a method for reducing communication latency based on a collision algorithm according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
In the following description, numerous details are set forth to provide a more thorough explanation of embodiments of the present invention, however, it will be apparent to one skilled in the art that embodiments of the present invention may be practiced without these specific details, and in other embodiments, well-known structures and devices are shown in block diagram form, rather than in detail, in order to avoid obscuring embodiments of the present invention.
As shown in fig. 2, the method for reducing communication delay based on collision algorithm in this embodiment includes:
s1, starting a lower computer to acquire data, and establishing wireless network connection between the lower computer and a base station;
s2, the lower computer initiates a connection request to the upper computer, and if the connection is successful, a data packet is sent through the lower computer, wherein the data packet comprises a timestamp and sampling data of a preset communication time point; if the connection fails, continuing to try connection;
s3, the lower computer adjusts the preset communication parameters according to the time offset value to finish reducing the communication time delay;
the obtaining mode of the time offset value comprises the following steps:
the upper computer acquires and caches all data packets under the base station, and calculates the time delay of each data packet according to the time stamp so as to acquire the average time delay;
and when the average time delay is higher than a preset value, acquiring the time deviation value by utilizing a conflict algorithm according to the time stamp and the average time delay.
Aiming at one side of a lower computer, the embodiment allocates a time deviation value for the lower computer with network connection communication delay, such as a field instrument, by using a conflict algorithm on the premise of not changing the existing network architecture and not increasing the hardware resources of a base station, statistically analyzes the adjusted communication delay, and if the effect is not ideal, the time deviation value can be calculated and allocated again until the time deviation value meets the delay expectation, so that the communication delay of each connection of the instrument and an application system can be greatly reduced.
In this embodiment, the lower computer (after power-on operation, a built-in wireless module may be used to search for a nearby base station network, a wireless network connection is established first, the field instrument determines whether a current internal clock is consistent with a preset communication parameter, and if the current internal clock is consistent with a communication time window period, the field instrument tries to establish a wireless connection with the upper computer (for example, an application system).
In this embodiment, the Time stamps include a Time stamp Time1 when the lower computer initiates a connection and a Time stamp Time2 when the connection is successful, and the Time delay of each data packet is obtained through Time2 to Time 1. The field meter in this embodiment packages the timestamp Time1 of the connection initiation, the timestamp Time2 of the connection success, and the sample Data of the preset communication Time point. If the connection fails, the connection is not packed and waits for the next communication time window period. The upper computer can receive the data packets of the field instrument and cache the data packets of all the field instruments of the base station, supposing that all the data packets are DataAll, the upper computer can calculate the Time Delay of Time2-Time1 in each piece of data, further count the average Time Delay Delayall of the whole data packets, then judge whether the Time Delay Delayall is higher than the preset value Delay of the system, and directly return if the Time Delay Delayall is not higher than the preset value Delay of the system. If the time delay is higher than the preset value, the overall time delay performance of the base station network is poor, and a large connection time delay exists, so that a conflict algorithm is required to calculate a connection time offset value.
In this embodiment, the connection time offset value calculation formula:
F(Time2-Time1)＝(DelayAll div Delay)*(Time2-Time1)
the Time1 is a timestamp for initiating connection, the Time2 is a timestamp for successful connection, the delayal is average Time Delay, and the Delay is a preset value.
And calculating a time deviant for each instrument by using the formula, issuing the deviant to each instrument on site, and circularly executing the steps of judging whether the current internal clock is consistent with the preset communication parameters and then judging by the instrument on site until the time delay expectation is met.
In one embodiment, a method for reducing communication delay based on a collision algorithm for one side of an upper computer comprises the following steps:
the method comprises the steps that an upper computer receives a connection request of a lower computer, and if the connection is successful, a data packet is sent through the lower computer and comprises a timestamp and sampling data of a preset communication time point;
acquiring the time delay of the lower computer according to the time stamp;
the upper computer distributes a time deviation value to the lower computer with high time delay to adjust the preset communication parameters of the lower computer, so as to reduce the communication time delay;
the obtaining mode of the time offset value comprises the following steps:
the upper computer acquires and caches all data packets under the base station, and calculates the time delay of each data packet according to the time stamp so as to acquire the average time delay;
and when the average time delay is higher than a preset value, acquiring the time deviation value by utilizing a conflict algorithm according to the time stamp and the average time delay.
In this embodiment, an upper computer (e.g., an application system) waits for a connection request from a lower computer (e.g., a field instrument). And after the connection is successful, receiving a Data packet sent by the lower computer, wherein the Data packet comprises a timestamp Time1 for initiating the connection, a timestamp Time2 for successful connection and sampling Data of a preset communication Time point, which are packaged together by the instrument. And after receiving the data packets, the upper computer caches the data packets of all the field instruments of the base station, and assumes that all the data packets are DataAll. And calculating the Time delay of the Time2-Time1 in each piece of data, and further counting the average Time delay DelayAll of the whole data packet. And judging whether the Delay DelayAll is higher than a preset value Delay of the system or not, and if not, directly returning. If the time delay is higher than the preset value, the overall time delay performance of the base station network is poor, and a large connection time delay exists, so that a conflict algorithm is required to calculate a connection time offset value. The time offset value is calculated as described above. And the upper computer calculates a time deviant for each instrument, issues the deviant to each instrument on site, and adjusts the communication parameters of each instrument until the time delay expectation is met.
Correspondingly, the embodiment also provides a system for reducing communication delay based on the collision algorithm, which comprises an upper computer, a base station and a lower computer,
the lower computer comprises
The request module is used for initiating a connection request to the upper computer;
the data sending module is used for sending a data packet through the lower computer, wherein the data packet comprises a timestamp and sampling data of a preset communication time point;
the parameter adjusting module is used for adjusting the preset communication parameters according to the time offset value to finish reducing the communication time delay;
the time offset value calculating module is used for calculating the time delay of each data packet according to the time stamp so as to obtain the average time delay; and when the average time delay is higher than a preset value, acquiring the time deviation value by utilizing a conflict algorithm according to the time stamp and the average time delay.
In the system for reducing communication delay based on the collision algorithm in this embodiment, the method in the above embodiment may be used to allocate a time offset value to a lower computer having network connection communication delay, such as a field instrument, without changing an existing network architecture and without increasing hardware resources of a base station, and perform statistical analysis on the adjusted communication delay.
The present embodiment also provides a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements any of the methods in the present embodiments.
The present embodiment further provides an electronic terminal, including: a processor and a memory;
the memory is used for storing computer programs, and the processor is used for executing the computer programs stored by the memory so as to enable the terminal to execute the method in the embodiment.
The computer-readable storage medium in the present embodiment can be understood by those skilled in the art as follows: all or part of the steps for implementing the above method embodiments may be performed by hardware associated with a computer program. The aforementioned computer program may be stored in a computer readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The electronic terminal provided by the embodiment comprises a processor, a memory, a transceiver and a communication interface, wherein the memory and the communication interface are connected with the processor and the transceiver and are used for completing mutual communication, the memory is used for storing a computer program, the communication interface is used for carrying out communication, and the processor and the transceiver are used for operating the computer program so that the electronic terminal can execute the steps of the method.
In this embodiment, the Memory may include a Random Access Memory (RAM), and may also include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory.
The Processor may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the Integrated Circuit may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component.
In the above-described embodiments, reference in the specification to "the embodiment," "an embodiment," "another embodiment," or "other embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiments is included in at least some embodiments, but not necessarily all embodiments. The various appearances of the phrase "the present embodiment," "one embodiment," or "another embodiment" are not necessarily all referring to the same embodiment.
In the embodiments described above, although the present invention has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description. For example, other memory structures (e.g., dynamic ram (dram)) may use the discussed embodiments. The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The invention is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.
The invention may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The invention may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
The foregoing embodiments are merely illustrative of the principles of the present invention and its efficacy, and are not to be construed as limiting the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A method for reducing communication latency based on a collision algorithm, comprising:
starting a lower computer to acquire data, and establishing wireless network connection between the lower computer and a base station;
the lower computer initiates a connection request to the upper computer, and if the connection is successful, a data packet is sent by the lower computer, wherein the data packet comprises a timestamp and sampling data of a preset communication time point; if the connection fails, continuing to try connection;
the lower computer adjusts the preset communication parameters according to the time offset value to finish reducing the communication time delay;
the obtaining mode of the time offset value comprises the following steps:
the upper computer acquires and caches all data packets under the base station, and calculates the time delay of each data packet according to the time stamp so as to acquire the average time delay;
and when the average time delay is higher than a preset value, acquiring the time deviation value by utilizing a conflict algorithm according to the time stamp and the average time delay.
2. The method for reducing communication delay based on the collision algorithm according to claim 1, before initiating the connection request to the upper computer, further comprising:
and judging whether the current internal clock of the lower computer is consistent with the preset communication parameters, and if so, initiating a connection request to the upper computer through the lower computer.
3. The method for reducing communication delay based on collision algorithm according to claim 1, wherein the Time stamps comprise a Time stamp Time1 for the lower computer to initiate connection and a Time stamp Time2 for the successful connection, and the delay of each data packet is obtained through Time2-Time 1.
4. The method for reducing communication delay based on collision algorithm as claimed in claim 3, wherein the time offset value is obtained by the following formula:
F(Time2-Time1)＝(DelayAll div Delay)*(Time2-Time1)
the Time1 is a timestamp for initiating connection, the Time2 is a timestamp for successful connection, the delayal is average Time Delay, and the Delay is a preset value.
5. The method for reducing communication delay based on the collision algorithm according to claim 2, wherein the adjusting the preset communication parameters by the lower computer according to the time offset value comprises:
and taking the sum of the preset communication parameter and the time deviation value as a new communication parameter, and adopting the new communication parameter to carry out subsequent consistency judgment with the current internal clock of the lower computer.
6. The method for reducing communication delay based on the collision algorithm according to claim 5, wherein after the current internal clock of the lower computer is judged to be consistent with the preset communication parameters, the method further comprises:
if the communication time window period is met, initiating a connection request to an upper computer through the lower computer;
if the connection fails, the connection is attempted again by waiting for the next communication time window.
7. A method for reducing communication latency based on a collision algorithm, comprising:
the method comprises the steps that an upper computer receives a connection request of a lower computer, and if the connection is successful, a data packet is sent through the lower computer and comprises a timestamp and sampling data of a preset communication time point;
acquiring the time delay of the lower computer according to the time stamp;
the upper computer distributes a time deviation value to the lower computer with high time delay to adjust the preset communication parameters of the lower computer, so as to reduce the communication time delay;
the obtaining mode of the time offset value comprises the following steps:
the upper computer acquires and caches all data packets under the base station, and calculates the time delay of each data packet according to the time stamp so as to acquire the average time delay;
and when the average time delay is higher than a preset value, acquiring the time deviation value by utilizing a conflict algorithm according to the time stamp and the average time delay.
8. A system for reducing communication time delay based on a collision algorithm is characterized by comprising an upper computer, a base station and a lower computer,
the lower computer comprises
The request module is used for initiating a connection request to the upper computer;
the data sending module is used for sending a data packet through the lower computer, wherein the data packet comprises a timestamp and sampling data of a preset communication time point;
the parameter adjusting module is used for adjusting the preset communication parameters according to the time offset value to finish reducing the communication time delay;
the time offset value calculating module is used for calculating the time delay of each data packet according to the time stamp so as to obtain the average time delay; and when the average time delay is higher than a preset value, acquiring the time deviation value by utilizing a conflict algorithm according to the time stamp and the average time delay.
9. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program, when executed by a processor, implements the method of any one of claims 1 to 7.
10. An electronic terminal, comprising: a processor and a memory;
the memory is for storing a computer program and the processor is for executing the computer program stored by the memory to cause the terminal to perform the method of any of claims 1 to 7.
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| CN112398559A (en) * | 2019-08-12 | 2021-02-23 | 顺丰科技有限公司 | Clock synchronization method, device, system and storage medium |
| CN113259042A (en) * | 2021-05-14 | 2021-08-13 | 湖南智领通信科技有限公司 | Method, device, equipment and storage medium for synchronizing clock reference among multiple equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102123413A (en) * | 2011-03-29 | 2011-07-13 | 杭州电子科技大学 | Network monitoring and protocol analysis system of wireless sensor network |
| CN109039819A (en) * | 2018-08-16 | 2018-12-18 | 深圳华锐金融技术股份有限公司 | Delay statistics method, apparatus, system and storage medium |
| CN112398559A (en) * | 2019-08-12 | 2021-02-23 | 顺丰科技有限公司 | Clock synchronization method, device, system and storage medium |
| CN113259042A (en) * | 2021-05-14 | 2021-08-13 | 湖南智领通信科技有限公司 | Method, device, equipment and storage medium for synchronizing clock reference among multiple equipment |
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