CN112188618B - Networking method, terminal, gateway and storage medium for dynamically adjusting networking resources - Google Patents
Networking method, terminal, gateway and storage medium for dynamically adjusting networking resources Download PDFInfo
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- CN112188618B CN112188618B CN201910584454.0A CN201910584454A CN112188618B CN 112188618 B CN112188618 B CN 112188618B CN 201910584454 A CN201910584454 A CN 201910584454A CN 112188618 B CN112188618 B CN 112188618B
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 230000006855 networking Effects 0.000 title claims abstract description 30
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- 238000004590 computer program Methods 0.000 claims description 13
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- 238000012544 monitoring process Methods 0.000 claims description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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Abstract
The invention discloses a networking method, a terminal, a gateway and a storage medium for dynamically adjusting networking resources, wherein the method comprises the following steps: the terminal acquires a downlink packet issued by a LoRa gateway in a downlink channel, wherein the gateway can dynamically adjust network access channel information according to the used resources of the system and add the latest network access channel information into the downlink packet to be transmitted; determining all network access channels newly allocated by a gateway according to the network access channel information carried in the downlink packet; selecting a specific network access channel from all network access channels newly allocated; after a period of random delay, sending a network access request to the selected network access channel; based on the invention, the terminal reasonably selects the network access channel and the network access time according to the information issued by the gateway, shortens a large number of terminal network access time and improves the utilization rate of system resources.
Description
Technical Field
The present invention relates to the field of LoRa communication, and in particular, to a networking method, a terminal, a gateway, and a storage medium for dynamically adjusting network access resources.
Background
At present, a network access or registration process is required before a system utilizing LoRa technology for communication normally operates, and the network access process needs a long time and occupies certain system resources. The current channels for terminal access to the network are mostly fixed. When the channels for network access are small, the network access time of the terminal is long; when the network access channels are more, after the terminal is basically successful in network access, the excessive network access channels cause the waste of system resources.
Disclosure of Invention
The invention aims to solve the technical problem of providing a networking method, a terminal, a gateway and a storage medium for dynamically adjusting networking resources aiming at the networking defects in the prior art.
The technical scheme adopted for solving the technical problems is as follows: constructing a networking method for dynamically adjusting networking resources based on LoRa, which is applied to a LoRa terminal, wherein the method comprises the following steps:
Acquiring a downlink packet issued by a LoRa gateway in a downlink channel, wherein the gateway can dynamically adjust network access channel information according to the used resources of a system and add the latest network access channel information into the downlink packet to be transmitted;
Determining all network access channels newly allocated by a gateway according to the network access channel information carried in the downlink packet;
selecting a specific network access channel from all network access channels newly allocated;
after a random delay, a network access request is sent to the selected network access channel.
Preferably, the determining all network access channels newly allocated by the gateway according to the network access channel information carried in the downlink packet includes:
extracting byte information of a preset position from a packet head of a downlink packet, and determining all newly allocated network access channels based on the byte information;
and taking a module by utilizing the terminal ID of the terminal and the number of all the network access channels which are newly allocated, and selecting the network access channel corresponding to the module taking result.
Preferably, the method further comprises:
After sending the network access request, monitoring the downlink channel to wait for receiving a reply packet, if the reply packet is received, determining that the network access is successful, otherwise, retransmitting the network access request.
Another aspect of the invention also constructs a LoRa terminal comprising a processor and a memory storing a computer program which, when executed by the processor, implements the steps of the method as described in any of the preceding claims.
In another aspect, the invention further constructs a networking method for dynamically adjusting networking resources based on LoRa, which is applied to a LoRa gateway, and the method comprises the following steps:
Dynamically adjusting network access channel information according to the used resources of the system;
Adding the latest network access channel information into a downlink packet to be transmitted and transmitting the downlink packet to the downlink channel, so that the LoRa gateway selects a specific network access channel to transmit a network access request according to the network access channel information carried in the downlink packet;
and acquiring a network access request from the network access signal, and sending a reply packet to the corresponding terminal when the network access can be confirmed.
Preferably, the adding the latest network access channel information to the downlink packet to be sent includes: and adding the latest network access channel information to the preset position of the packet head of the downlink packet in the form of one byte, wherein each uplink channel corresponds to one bit in the byte, and when the uplink channel can be used for network access of the terminal, setting the corresponding bit to be valid to indicate that the uplink channel is the network access channel.
Preferably, the method further comprises: when the number of terminals which have already accessed the network increases, the frequency of adding the access channel information to the downlink packet is reduced.
Preferably, the method further comprises: when the terminal which has accessed the network reaches the preset system capacity, only one access channel is reserved, the reserved period of the access channel is divided into time, one part of time is used for normal data transmission of the terminal which has accessed the network, and the other part of time is used for the terminal to access the network.
Another aspect of the invention also constructs a LoRa gateway comprising a processor and a memory storing a computer program which when executed by the processor performs the steps of the method as set forth in any of the preceding claims.
Another aspect of the invention also constructs a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the method as set forth in any of the preceding claims.
The networking method, the terminal, the gateway and the storage medium for dynamically adjusting the networking resources have the following beneficial effects: the gateway can dynamically issue the network access channel information according to the used resources of the system, the terminal reasonably selects the network access channel and the network access time according to the information issued by the gateway, so that a large number of terminal network access times are shortened, the utilization rate of the system resources is improved, and the terminal sends the network access request after randomly delaying after selecting the network access channel in order to reduce the collision probability; furthermore, the network access channel information is issued by adding the network access channel information into the packet header of the downlink packet to be transmitted, and only occupies one byte, so that the network access channel information does not occupy too much resources, and the timely issuing of the network access information can be ensured; in addition, the frequency of the gateway for information release can be dynamically adjusted, so that unnecessary data transmission in the system is further reduced.
Drawings
For a clearer description of an embodiment of the invention or of a technical solution in the prior art, the drawings that are needed in the description of the embodiment or of the prior art will be briefly described, it being obvious that the drawings in the description below are only embodiments of the invention, and that other drawings can be obtained, without inventive effort, by a person skilled in the art from the drawings provided:
FIG. 1 is a flow chart of an embodiment one of a networking method for dynamically adjusting networking resources based on LoRa of the present invention;
Fig. 2 is a flow chart of a second embodiment of a method for dynamically adjusting networking resources based on LoRa of the present invention.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Exemplary embodiments of the present invention are illustrated in the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The invention has the following general ideas: the gateway dynamically adjusts the network access channel information according to the used resources of the system, and adds the latest network access channel information into a downlink packet to be sent and sends the downlink packet to a downlink channel, so that the timely release of the network access channel information is ensured, and excessive resources are not occupied; the terminal determines all network access channels newly allocated by the gateway according to the network access channel information carried in the downlink packet, selects a specific network access channel from all network access channels newly allocated, and transmits a network access request to the selected network access channel after randomly delaying for a period of time, so that a large number of terminal network access time can be shortened, the system resource utilization rate is improved, and the terminal transmits the network access request after randomly delaying after selecting the network access channel in order to reduce collision probability.
In order to better understand the above technical solutions, the following detailed description will be made with reference to the accompanying drawings and specific embodiments, and it should be understood that specific features in the embodiments and examples of the present application are detailed descriptions of the technical solutions of the present application, and not limit the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
Example 1
Referring to fig. 1, the embodiment discloses a networking method for dynamically adjusting networking resources based on LoRa, which is applied to a LoRa terminal, and the method includes:
s101, acquiring a downlink packet issued by a LoRa gateway in a downlink channel;
The gateway can dynamically adjust network access channel information according to the used resources of the system, and add the latest network access channel information into the downlink packets to be sent. For example, all downstream packets of the gateway represent all newly allocated network access channels in their header by one byte. In general, there are eight uplink channels, so one byte can be used to indicate whether each uplink channel is an access channel, one bit in each corresponding byte of each uplink channel is set to inactive 0 by default, and when an uplink channel can be used for terminal access, its corresponding bit is set to active, such as 1, to indicate that the uplink channel is an access channel.
For example, the total uplink channels have F0-F7, and the bytes of the preset position of the header are 00100011, which indicates that the F2, F6, and F7 channels are network access channels.
S102, determining all network access channels newly allocated by a gateway according to the network access channel information carried in the downlink packet;
specifically, byte information of a preset position is extracted from a packet head of a downlink packet, and all network access channels which are newly allocated are determined based on the byte information;
And taking a module by utilizing the terminal ID of the terminal and the number of all the network access channels which are newly allocated, and selecting the network access channel corresponding to the module taking result. For example, assume that step S101 analyzes that there are F2, F6, and F7 out of the inbound channels, which means that a total of 3 inbound channels, the terminal whose ID can be divided by 3 uses the 1 st inbound channel F2, uses the 2 nd inbound channel F6 with the remainder of 1, and uses the 3 rd inbound channel F7 with the remainder of 2.
S103, selecting a specific network access channel from all newly allocated network access channels;
s104, after a period of random delay, sending a network access request to the selected network access channel.
And S105, after the network access request is sent, monitoring the downlink channel to wait for receiving a reply packet, if the reply packet is received, determining that the network access is successful, otherwise, resending the network access request.
For example, if the reply packet is not received within a certain period of time, the reply packet is retransmitted at intervals, and if the gateway updates the network access channel information, a newly determined network access channel should be selected for transmission.
Example two
Referring to fig. 2, the embodiment discloses a networking method for dynamically adjusting network access resources based on LoRa, which is applied to a LoRa gateway, and the method includes:
S201, dynamically adjusting network access channel information according to the used resources of the system; it is reasonable to understand that as terminals in the system increase, the number of channels used increases, the number of channels available for network access decreases, and the number of terminals required to access the network also decreases.
S202, adding the latest network access channel information into a downlink packet to be transmitted and transmitting the downlink packet to a downlink channel, so that the LoRa gateway selects a specific network access channel to transmit a network access request according to the network access channel information carried in the downlink packet;
specifically, all downlink packets of the gateway represent all newly allocated network access channels by one byte in the packet header. In general, there are eight uplink channels, so one byte can be used to indicate whether each uplink channel is an access channel, one bit in each corresponding byte of each uplink channel is set to inactive 0 by default, and when an uplink channel can be used for terminal access, its corresponding bit is set to active, such as 1, to indicate that the uplink channel is an access channel.
S203, acquiring a network access request from a network access signal, and issuing a reply packet to a corresponding terminal when the network access is confirmed to be possible.
Preferably, the frequency of the gateway issuing the information of the available network access channels can be dynamically adjusted, for example, according to the number of terminals in the system, when the number of terminals in the system is small, more terminals needing to access the network are expected, at this time, the issuing frequency is high, the network access efficiency is improved, otherwise, the issuing efficiency can be reduced, and the data transmission amount of the system is reduced. To this end, the method further comprises: when the terminals which have access to the network are increased, the frequency of adding the access channel information to the downlink packets is reduced; when the terminals that have already been networked decrease, the frequency of adding the networking channel information to the downstream packets is increased, with the limitation that each downstream packet adds the networking channel information. Thus, when more and more terminals are in the system, fewer and fewer terminals are not in network connection (or individual terminals are off-line and re-network connection in the running process of the system), the frequency of issuing available network connection channel information is reduced, unnecessary data transmission in the system is reduced, and the network connection time of the terminals may be slightly prolonged.
Or according to the data congestion degree in the network, when the data in the system is congested, the broadcasting frequency is reduced, because the congestion situation can be aggravated by increasing the network access data, otherwise, the broadcasting frequency can be increased, and the network access efficiency is improved.
Preferably, the method further comprises: when the terminal which has accessed the network reaches the preset system capacity (basically reaches the system capacity), only one access channel is reserved, and the reserved period of the access channel is divided into time, wherein one part of time is used for normal data transmission of the terminal which has accessed the network, and the other part of time is used for the terminal to access the network.
Example III
The embodiment discloses a LoRa terminal, which is characterized by comprising a processor and a memory, wherein the memory stores a computer program, and the computer program realizes the steps of the method according to the embodiment when being executed by the processor. The specific implementation process may refer to the description of the above method embodiments, and will not be repeated here.
Example IV
The embodiment discloses a LoRa gateway, which is characterized by comprising a processor and a memory, wherein the memory stores a computer program, and the computer program is executed by the processor to implement the steps of the method according to the second embodiment. The specific implementation process may refer to the description of the above method embodiments, and will not be repeated here.
Example five
The present embodiment discloses a computer-readable storage medium, in which a computer program is stored, which when executed by a processor implements the steps of the method according to the first embodiment, or which when executed by a processor implements the steps of the method according to the second embodiment. The specific implementation process may refer to the description of the above method embodiments, and will not be repeated here.
In summary, the networking method, terminal, gateway and storage medium for dynamically adjusting networking resources of the present invention have the following beneficial effects: the gateway can dynamically issue the network access channel information according to the used resources of the system, the terminal reasonably selects the network access channel and the network access time according to the information issued by the gateway, so that a large number of terminal network access times are shortened, the utilization rate of the system resources is improved, and the terminal sends the network access request after randomly delaying after selecting the network access channel in order to reduce the collision probability; furthermore, the network access channel information is issued by adding the network access channel information into the packet header of the downlink packet to be transmitted, and only occupies one byte, so that the network access channel information does not occupy too much resources, and the timely issuing of the network access information can be ensured; in addition, the frequency of the gateway for information release can be dynamically adjusted, so that unnecessary data transmission in the system is further reduced.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (7)
1. A networking method for dynamically adjusting networking resources based on LoRa is applied to a LoRa terminal, and is characterized by comprising the following steps:
Acquiring a downlink packet issued by a LoRa gateway in a downlink channel, wherein the gateway can dynamically adjust network access channel information according to the used resources of a system, add the latest network access channel information into the downlink packet to be transmitted, only reserve one network access channel when a terminal which has accessed the network reaches the preset system capacity, and divide the reserved period of the network access channel in time, wherein one part of time is used for normal data transmission of the terminal which has accessed the network, and the other part of time is used for terminal network access;
according to the network access channel information carried in the downlink packet, determining all network access channels newly allocated by the gateway, including: extracting byte information of a preset position from a packet head of a downlink packet, determining all network access channels which are newly allocated based on the byte information, taking a module by utilizing a terminal ID of the terminal and the number of all network access channels which are newly allocated, and selecting the network access channels corresponding to the module taking result;
selecting a specific network access channel from all network access channels newly allocated;
after a random delay, a network access request is sent to the selected network access channel.
2. The method according to claim 1, wherein the method further comprises:
After sending the network access request, monitoring the downlink channel to wait for receiving a reply packet, if the reply packet is received, determining that the network access is successful, otherwise, retransmitting the network access request.
3. A networking method for dynamically adjusting networking resources based on LoRa is applied to a LoRa gateway, and is characterized by comprising the following steps:
dynamically adjusting network access channel information according to the used resources of the system;
Adding the latest network access channel information into a downlink packet to be transmitted and transmitting the downlink packet to the downlink channel, so that the LoRa terminal selects a specific network access channel to transmit a network access request according to the network access channel information carried in the downlink packet;
Acquiring a network access request from a network access signal, and sending a reply packet to a corresponding terminal when the network access is confirmed to be possible; when the terminal which has accessed the network reaches the preset system capacity, only one network access channel is reserved, the reserved period of the network access channel is divided in time, one part of time is used for normal data transmission of the terminal which has accessed the network, and the other part of time is used for the terminal to access the network;
wherein, adding the latest network access channel information to the downlink packet to be sent comprises: and adding the latest network access channel information to the preset position of the packet head of the downlink packet in the form of one byte, wherein each uplink channel corresponds to one bit in the byte, and when the uplink channel can be used for network access of the terminal, setting the corresponding bit to be valid to indicate that the uplink channel is the network access channel.
4. A method according to claim 3, characterized in that the method further comprises: when the number of terminals which have already accessed the network increases, the frequency of adding the access channel information to the downlink packet is reduced.
5. A LoRa terminal comprising a processor and a memory, the memory storing a computer program which, when executed by the processor, implements the steps of the method according to any of claims 1-2.
6. A LoRa gateway comprising a processor and a memory, the memory storing a computer program which, when executed by the processor, implements the steps of the method according to any of claims 3-4.
7. A computer readable storage medium, characterized in that a computer program is stored, which computer program, when being executed by a processor, implements the steps of the method according to any of claims 1-2, or which computer program, when being executed by a processor, implements the steps of the method according to any of claims 3-4.
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| CN115087076A (en) * | 2021-03-16 | 2022-09-20 | 中国电信股份有限公司 | Method, apparatus, node device, system, and medium for joining LoRa network |
| CN116506077B (en) * | 2023-06-28 | 2023-10-20 | 微网优联科技(成都)有限公司 | Signal processing method and XPON-based communication system |
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