CN112188618A - Networking method, terminal, gateway and storage medium for dynamically adjusting network access resources - Google Patents
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- H—ELECTRICITY
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- 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 network access resources, wherein the method comprises the following steps: a terminal acquires a downlink packet issued by an LoRa gateway on a downlink channel, wherein the gateway can dynamically adjust network access channel information according to used resources of a system and adds the latest network access channel information to the downlink packet to be sent; determining all network access channels newly allocated by the gateway according to the network access channel information carried in the downlink packet; selecting a specific network access channel from all newly distributed network access channels; 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, thereby shortening a large amount of network access time of the terminal and improving the utilization rate of system resources.
Description
Technical Field
The present invention relates to the field of LoRa communications, 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 the LoRa technology communication normally operates, and the network access process needs a long time and occupies certain system resources. At present, the channel of the terminal accessing the network is mostly fixed. When the number of the channels for accessing the network is small, the network access time of the terminal is long; when the number of the channels of the network access is large, the excessive channels of the network access cause the waste of system resources after the terminal is successfully accessed to the network.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a networking method, a terminal, a gateway and a storage medium for dynamically adjusting network access resources, aiming at the above network access defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a networking method for dynamically adjusting network access resources based on LoRa is constructed and applied to a LoRa terminal, and the method comprises the following steps:
acquiring a downlink packet issued by an LoRa gateway on a downlink channel, wherein the gateway can dynamically adjust network access channel information according to used resources of a system and add the latest network access channel information into the downlink packet to be sent;
determining all network access channels newly allocated by the gateway according to the network access channel information carried in the downlink packet;
selecting a specific network access channel from all newly distributed network access channels;
and after a random delay for a period of time, sending a network access request to the selected network access channel.
Preferably, the determining, according to the network access channel information carried in the downlink packet, all network access channels newly allocated by the gateway includes:
extracting byte information of a preset position from a packet header of a downlink packet, and determining all newly allocated network access channels based on the byte information;
and taking a module by utilizing the self terminal ID and the number of all newly distributed network access channels, and selecting the network access channel corresponding to the module taking result.
Preferably, the method further comprises:
and 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, sending the network access request again.
In another aspect, the present invention also provides a LoRa terminal, including a processor and a memory, where the memory stores a computer program, and the computer program, when executed by the processor, implements the steps of the method as set forth in any one of the preceding claims.
In another aspect of the present invention, a networking method for dynamically adjusting network access resources based on LoRa is further configured, where the networking method is applied to an LoRa gateway, and the method includes:
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 sent and sending the downlink packet to a downlink channel, so that the LoRa gateway selects a specific network access channel according to the network access channel information carried in the downlink packet and sends a network access request;
and acquiring a network access request from the network access signal, and issuing a reply packet to the corresponding terminal when the network access is confirmed.
Preferably, the adding the latest network access channel information to the downlink packet to be transmitted includes: and adding the latest network access channel information to a preset position of a packet header of a downlink packet in a 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 a terminal, the corresponding bit is set to be valid to indicate that the uplink channel is the network access channel.
Preferably, the method further comprises: when the number of terminals that have accessed the network increases, the frequency of adding the access channel information to the downlink packet is decreased.
Preferably, the method further comprises: when the terminal which accesses the network reaches the preset system capacity, only one network access channel is reserved, the reserved period of the network access channel is subjected to time division, one part of time is used for normal data transmission of the terminal which accesses the network, and the other part of time is used for terminal network access.
In another aspect, the present invention also provides a LoRa gateway including a processor and a memory, the memory storing a computer program which, when executed by the processor, implements the steps of the method as set forth in any one of the preceding claims.
Another aspect of the invention also constitutes a computer-readable storage medium storing a computer program which, when executed by a processor, carries out the steps of the method according to any of the preceding claims.
The networking method, the terminal, the gateway and the storage medium for dynamically adjusting the network access resources have the following beneficial effects that: the gateway can dynamically release the information of the network access channel 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 released by the gateway, the network access time of a large number of terminals is shortened, the utilization rate of the system resources is improved, and the network access request is sent after the network access channel is selected by the terminal and is randomly delayed so as to reduce the collision probability; furthermore, the network access channel information is issued by adding the network access channel information to the packet header of the downlink packet to be sent, and only one byte is occupied, so that too many resources are not occupied, and the network access information can be issued in time; in addition, the gateway can also dynamically adjust the frequency of information distribution, thereby further reducing unnecessary data transmission in the system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts:
fig. 1 is a flowchart of a first embodiment of a networking method for dynamically adjusting network access resources based on LoRa according to the present invention;
fig. 2 is a flowchart of a second embodiment of the networking method for dynamically adjusting network access resources based on LoRa according to the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Exemplary embodiments of the invention are shown in the 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 in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The general idea of the invention is as follows: the gateway dynamically adjusts the network access channel information according to the used resources of the system, 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 network access channel information is guaranteed to be timely published, and excessive resources are not occupied; the terminal determines all newly distributed network access channels of the gateway according to the network access channel information carried in the downlink packet, selects a specific network access channel from all newly distributed network access channels, randomly delays for a period of time, and sends a network access request to the selected network access channel, so that the network access time of a large number of terminals can be shortened, the utilization rate of system resources is improved, and the network access request is sent after the network access channel is selected by the terminal and randomly delays to reduce the collision probability.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limited to the technical solutions of the present application, and the technical features of the embodiments and examples of the present invention may be combined with each other without conflict.
Example one
Referring to fig. 1, the present embodiment discloses a networking method for dynamically adjusting network access resources based on LoRa, which is applied to an LoRa terminal, and the method includes:
s101, acquiring a downlink packet issued by an LoRa gateway on a downlink channel;
the gateway can dynamically adjust the network access channel information according to the used resources of the system, and adds the latest network access channel information to a downlink packet to be sent. For example, all downstream packets of the gateway indicate all newly allocated network channels by one byte in the header. Generally, there are eight uplink channels, so that a byte can be used to indicate whether each uplink channel is a network access channel, each uplink channel corresponds to a bit in the byte, each bit is set to be invalid 0 by default, and when the uplink channel can be used for terminal network access, the corresponding bit is set to be valid, for example, 1, to indicate that the uplink channel is a network access channel.
For example, the total uplink channels are F0-F7, and the byte of the preset position of the packet header is 00100011, which means that F2, F6, and F7 channels are network access channels.
S102, determining all network access channels newly distributed 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 header of a downlink packet, and all newly allocated network access channels are determined based on the byte information;
and taking a module by utilizing the self terminal ID and the number of all newly distributed network access channels, and selecting the network access channel corresponding to the module taking result. For example, assuming that the incoming network access channels analyzed in step S101 include F2, F6, and F7, which indicate a total of 3 network access channels, the terminal whose ID can be divided by 3 uses the 1 st network access channel F2, the terminal whose remainder is 1 uses the 2 nd network access channel F6, and the terminal whose remainder is 2 uses the 3 rd network access channel F7.
S103, selecting a specific network access channel from all newly distributed network access channels;
and S104, after randomly delaying for a period of time, 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, sending the network access request again.
For example, if the reply packet is not received within a certain time, the packet is retransmitted at a certain time interval, and certainly, if the gateway updates the information of the network access channel, a newly determined network access channel should be selected to transmit the packet.
Example two
Referring to fig. 2, the present embodiment discloses a networking method for dynamically adjusting network access resources based on LoRa, which is applied to an LoRa gateway, and the method includes:
s201, network access channel information dynamically adjusted according to used resources of a system; it is easy to understand that as the number of terminals in the system increases, the number of channels used increases, the number of channels available for network entry decreases, and the number of terminals that need to be accessed becomes smaller, which is reasonable.
S202, adding the latest network access channel information into a downlink packet to be sent, and sending the downlink packet to a downlink channel, so that a specific network access channel is selected by an LoRa gateway according to the network access channel information carried in the downlink packet to send a network access request;
specifically, all downstream packets of the gateway indicate all newly allocated network access channels by one byte in the header of the downstream packets. Generally, there are eight uplink channels, so that a byte can be used to indicate whether each uplink channel is a network access channel, each uplink channel corresponds to a bit in the byte, each bit is set to be invalid 0 by default, and when the uplink channel can be used for terminal network access, the corresponding bit is set to be valid, for example, 1, to indicate that the uplink channel is a network access channel.
And S203, acquiring a network access request from the network access signal, and issuing a reply packet to the corresponding terminal when the network access is confirmed.
Preferably, the frequency of the gateway issuing the information of the available network access channel may also be dynamically adjusted, for example, adjusted according to the number of terminals in the system, when the number of terminals in the system is small, it is expected that more terminals need to access the network, and the issuing frequency is high at this time, so as to improve the network access efficiency, otherwise, the issuing efficiency may be reduced, so as to reduce the data volume transmitted by the system. To this end, the method further comprises: when the number of terminals which have accessed the network increases, the frequency of adding the network access channel information to the downlink packet is reduced; when the number of terminals which have accessed the network is reduced, the frequency of adding the network access channel information to the downlink packets is increased, and in the limit, the network access channel information is added to each downlink packet. Therefore, when more and more terminals are in the system and less terminals are not in the network (or a single terminal is in the process of network access again in an offline manner during the operation of the system), the frequency of issuing the available network access channel information is reduced, unnecessary data transmission in the system is reduced, and the network access 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 network access channel is reserved, the reserved period of the network access channel is subjected to time division, 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.
EXAMPLE III
The present embodiment discloses an LoRa terminal, which is characterized by comprising a processor and a memory, where the memory stores a computer program, and the computer program implements the steps of the method according to the first embodiment when executed by the processor. The specific implementation process may refer to the description of the above method embodiment, and is not described herein again.
Example four
The present embodiment discloses an LoRa gateway, which is characterized by comprising a processor and a memory, where the memory stores a computer program, and the computer program implements the steps of the method according to the second embodiment when executed by the processor. The specific implementation process may refer to the description of the above method embodiment, and is not described herein again.
EXAMPLE five
The present embodiment discloses a computer-readable storage medium, characterized in that a computer program is stored, which, when being executed by a processor, implements the steps of the method according to the first embodiment or which, when being 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 embodiment, and is not described herein again.
In summary, the networking method, terminal, gateway and storage medium for dynamically adjusting network access resources of the present invention have the following beneficial effects: the gateway can dynamically release the information of the network access channel 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 released by the gateway, the network access time of a large number of terminals is shortened, the utilization rate of the system resources is improved, and the network access request is sent after the network access channel is selected by the terminal and is randomly delayed so as to reduce the collision probability; furthermore, the network access channel information is issued by adding the network access channel information to the packet header of the downlink packet to be sent, and only one byte is occupied, so that too many resources are not occupied, and the network access information can be issued in time; in addition, the gateway can also dynamically adjust the frequency of information distribution, thereby further reducing unnecessary data transmission in the system.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A networking method for dynamically adjusting network access resources based on LoRa is applied to a LoRa terminal, and is characterized in that the method comprises the following steps:
acquiring a downlink packet issued by an LoRa gateway on a downlink channel, wherein the gateway can dynamically adjust network access channel information according to used resources of a system and add the latest network access channel information into the downlink packet to be sent;
determining all network access channels newly allocated by the gateway according to the network access channel information carried in the downlink packet;
selecting a specific network access channel from all newly distributed network access channels;
and after a random delay for a period of time, sending a network access request to the selected network access channel.
2. The method according to claim 1, wherein the determining all network access channels newly allocated by the gateway according to the network access channel information carried in the downlink packet comprises:
extracting byte information of a preset position from a packet header of a downlink packet, and determining all newly allocated network access channels based on the byte information;
and taking a module by utilizing the self terminal ID and the number of all newly distributed network access channels, and selecting the network access channel corresponding to the module taking result.
3. The method of claim 1, further comprising:
and 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, sending the network access request again.
4. A networking method for dynamically adjusting network access resources based on LoRa is applied to a LoRa gateway, and is characterized in that 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 sent and sending the downlink packet to a downlink channel, so that the LoRa gateway selects a specific network access channel according to the network access channel information carried in the downlink packet and sends a network access request;
and acquiring a network access request from the network access signal, and issuing a reply packet to the corresponding terminal when the network access is confirmed.
5. The method of claim 4, wherein the adding the latest network access channel information to the downlink packet to be transmitted comprises: and adding the latest network access channel information to a preset position of a packet header of a downlink packet in a 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 a terminal, the corresponding bit is set to be valid to indicate that the uplink channel is the network access channel.
6. The method of claim 4, further comprising: when the number of terminals that have accessed the network increases, the frequency of adding the access channel information to the downlink packet is decreased.
7. The method of claim 4, further comprising: when the terminal which accesses the network reaches the preset system capacity, only one network access channel is reserved, the reserved period of the network access channel is subjected to time division, one part of time is used for normal data transmission of the terminal which accesses the network, and the other part of time is used for terminal network access.
8. A LoRa terminal, comprising a processor and a memory, the memory storing a computer program that, when executed by the processor, performs the steps of the method according to any one of claims 1-3.
9. An LoRa gateway comprising a processor and a memory, the memory storing a computer program that, when executed by the processor, performs the steps of the method according to any one of claims 4-7.
10. A computer-readable storage medium, characterized in that a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1-3, or which, when being executed by a processor, carries out the steps of the method according to any one of claims 4-7.
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| CN116506077A (en) * | 2023-06-28 | 2023-07-28 | 微网优联科技(成都)有限公司 | Signal processing method and XPON-based communication system |
| 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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