CN117880924A

CN117880924A - Method for accessing network, communication device and storage medium

Info

Publication number: CN117880924A
Application number: CN202311778369.0A
Authority: CN
Inventors: 陈超
Original assignee: Nanjing Yisiwei Computing Technology Co ltd; Beijing Eswin Computing Technology Co Ltd
Current assignee: Nanjing Yisiwei Computing Technology Co ltd; Beijing Eswin Computing Technology Co Ltd
Priority date: 2023-12-21
Filing date: 2023-12-21
Publication date: 2024-04-12

Abstract

The disclosure provides a method for accessing a network, a communication device and a storage device, wherein the method comprises the following steps: the station performs frequency domain scanning based on a central frequency point of a first channel, and detects a beacon frame of the first channel and a beacon frame of a second channel; the first channel is a partial channel in N channels, the N channels are available channels of a site scanning frequency band, the N channels also comprise second channels, and the second channels are adjacent channels and/or next adjacent channels of the first channel; and if the station receives the beacon frame in the scanning of the first channel, accessing the access point. The network access method, the communication device and the storage medium reduce blind scanning time and improve network access speed.

Description

Method for accessing network, communication device and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method for accessing a network, a communication device, and a storage medium.

Background

With the development of internet of things technology, more and more intelligent electronic devices can access to a network.

At present, an electronic device with wifi function generally adopts a channel traversing mode during initial access. Specifically, taking a wifi wireless network with a frequency of 2.4G as an example, when the electronic device accesses the wireless access point for the first time, a plurality of channels are generally scanned sequentially according to a frequency band sequence to obtain a target wireless access point, so as to realize network access.

However, the time required for scanning to the target wireless access point for accessing the network in the mode is long, so that the endurance time of the electronic equipment is reduced, the energy consumption of the electronic equipment is improved, and the work efficiency of the electronic equipment is not improved.

Disclosure of Invention

In view of the foregoing, an object of the present invention is to provide a method for accessing a network, a communication device and a storage medium, so as to reduce blind scanning time, improve network access speed, and further improve network access speed.

According to an aspect of the present disclosure, there is provided a method of accessing a network, comprising:

the station performs frequency domain scanning based on a central frequency point of a first channel, and detects a beacon frame of the first channel and a beacon frame of a second channel; the first channels are part of N channels, the N channels are available channels of the station scanning frequency band, the N channels also comprise the second channels, and the second channels are adjacent channels and/or next adjacent channels of the first channels;

and the station accesses the access point if the station receives the beacon frame in the process of scanning the first channel.

Optionally, the method further comprises:

if the station does not receive the beacon frame during scanning the first channel, performing frequency domain scanning based on a center frequency point of the second channel, and detecting the beacon frame of the second channel; and

and the station accesses the access point if the station receives the beacon frame in the scanning of the second channel.

Optionally, the first channel is selected according to the frequency of use and/or the scanning coverage frequency band of the N channels.

Optionally, the N channels include 1 st to N th channels, and the first channel includes 2 nd, 5 th, 8 th, and 11 th channels.

Optionally, the N channels include 1 st to N th channels, and the first channel includes 1 st, 6 th and 11 th channels.

Optionally, the N channels include 1 st to N th channels, and the first channel includes 3 rd, 8 th and 13 th channels.

According to another aspect of the present disclosure, there is provided a communication apparatus including:

the scanning module is configured to perform frequency domain scanning based on a central frequency point of a first channel and detect a beacon frame of the first channel and a beacon frame of a second channel; the first channels are part of N channels, the N channels are available channels of the station scanning frequency band, the N channels also comprise the second channels, and the second channels are adjacent channels and/or next adjacent channels of the first channels; and

and the access module is configured to access the access point if the beacon frame is received during scanning of the first channel.

Optionally, the scanning module is further configured to perform frequency domain scanning based on a center frequency point of the second channel if no beacon frame is received during scanning of the first channel, and detect the beacon frame of the second channel, and the access module is further configured to access an access point if the beacon frame is received during scanning of the second channel.

Optionally, the N channels include 1 st to N channels, the first channel includes 2 nd, 5, 8, 11 th channels, or the first channel includes 1 st, 6 th, 11 th channels, or the N channels include 1 st to N channels, and the first channel includes 3 rd, 8 th, 13 th channels.

According to yet another aspect of the present disclosure there is provided a communication device comprising a processor and a memory for storing a set of programs, instructions or code, the processor being for executing the programs, instructions or code stored in the memory to carry out the steps of the method as described above.

According to yet another aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program or instructions which, when executed by a processor, implement a method as described above.

The method, the communication device and the storage medium for accessing the network, provided by the disclosure, perform frequency domain scanning based on a center frequency point of a first channel, detect a beacon frame of the first channel and a beacon frame of a second channel, and access an access point if the beacon frame is received in scanning the first channel. The method and the device cover or partially cover the scanning of the second channel in the process of scanning the first channel, so that the speed of accessing the network can be improved to a certain extent.

Drawings

Fig. 1 shows a schematic diagram of a communication system;

fig. 2 shows a frequency band schematic diagram of a channel provided according to an embodiment of the present disclosure;

fig. 3 is a flow chart illustrating a method for accessing a network according to an embodiment of the present disclosure;

fig. 4 shows a schematic structural diagram of a communication device provided according to an embodiment of the present disclosure;

fig. 5 shows a schematic structural diagram of yet another communication device provided according to an embodiment of the present disclosure.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the accompanying drawings. This application may, however, be embodied in different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Fig. 1 shows a schematic diagram of a communication system.

Referring to fig. 1, there is shown a communication system adapted to the network access technology scheme of the present disclosure. The present embodiment is described taking a communication system in which a wireless local area network (WLAN, wireless Local Area Network) can be deployed as an example. The wireless lan is a wireless lan based on the IEEE802.11 standard, allowing wireless connection in a lan environment using a 2.4GHz or 5GHz radio frequency band in an industrial scientific medical band that may not be authorized.

A communication system includes one or more Access Points (APs) and one or more Stations (STAs). Illustratively, the communication system of the present embodiment includes one access point and two stations (station STA1 and station STA 2). Both the access point and the station support WLAN protocols, which may include, for example, ieee802.11be (or referred to as Wi-Fi 7, eht protocol), ieee802.11ax, ieee802.11ac, etc. protocols. Station STA1 and station STA2 can perform channel contention to preempt channel resources and access the access point.

An access point is, for example, a device with wireless communication capabilities that supports WLAN protocols for communication. The access point device may be a communication entity such as a communication server, router, switch, bridge, etc. The access point may include a macro Base station, a micro Base station, a pico Base station, a femto Base station, a relay station, a transmission reception point (TRP, transmission Reception Point), an evolved Node B (eNB), a radio network controller (RNC, radio Network Controller), a Home Base station (Home evolved NodeB/HNB Home NodeB), a baseband Unit (BBU, base Band Unit), a WiFi access point, an access backhaul integration (IAB, integrated Access and Backhaul), and the like. The access point may also be a chip and a processing system in the whole device, so as to implement the method and the function of the embodiment of the disclosure.

A station is, for example, a device with wireless communication capabilities that supports WLAN protocols for communication. Sites may include Mobile phones (MS), mobile stations (pad), computers with wireless transceiving functions, virtual Reality (VR) devices, augmented Reality (AR, augmented Reality) devices, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (self-driving), wireless terminals in remote medical (remote media), wireless terminals in smart grid (smart grid), wireless terminals in transportation security (transportation safety), wireless terminals in smart city (smart city), wireless terminals in smart home (smart home), subscriber units (PDA, personal Digital Assistant) computers, tablet computers, laptop computers (laptop), machine type communication (MTC, machine Type Communication) terminals, and so on. Alternatively, the site may be a handheld device (handset) with a wireless communication function, an in-vehicle device, a wearable device, or a terminal in the internet of things, a terminal in any form in a 5G and a communication system evolving after 5G, or the like, which is not limited in this application.

Fig. 2 shows a frequency band schematic diagram of a channel provided according to an embodiment of the present disclosure.

Referring to fig. 2, the channel in the present embodiment is exemplified by a channel in a wireless network of a 2.4GHz band. It should be noted that the channel of the present disclosure may also be a channel in a wireless network in the 5GHz band. Illustratively, the channels in a wireless network in the 2.4GHz band include 14 channels (e.g., channel 1, channel 2, channel 14), each having a bandwidth B of about 22MHz. Wherein the frequency offset between the center frequency points between two adjacent channels in other channels except the last channel is about 5MHz. In this embodiment, the frequency band of the current wireless network is divided into 14 channels in the dividing manner as shown in the figure, and since the channel where the target AP is located can be determined by only scanning N-1 channels of all channels N in the frequency band where the current network is located when the channel where the target AP is located is found, in this embodiment, the frequency offset of the center frequency of the first N-1 channels is determined to be the same value, and the N channels obtained by dividing can cover the entire frequency band.

As shown in connection with fig. 2, scanning of channel 2 may at least cover scanning of channels 1, 3 and may even cover scanning of channel 4.

Fig. 3 shows a flowchart of a method for accessing a network according to an embodiment of the present disclosure.

Referring to fig. 3, a method for accessing a network is provided, for example, comprising the steps of:

step S100: the station performs frequency domain scanning based on the center frequency point of the first channel, and detects the beacon frame of the first channel and the beacon frame of the second channel. The first channel is a partial channel in N channels, the N channels are available channels of a site scanning frequency band, the N channels further comprise second channels, and the second channels are adjacent channels and/or next adjacent channels of the first channels. Further, the first channel is selected according to the using frequency and/or scanning coverage frequency band of the N channels. Referring to fig. 2, illustratively, for example, a wireless network of the 2.4GHz band, the N channels include, for example, 13 of the channels in fig. 2. This is because if the network is not accessed after the 13 channels are scanned, the access point is on the unscanned channel. The scanning channel i will be covered by the scanning channel i-1 and the channel i+1 will be described as an example, where i is a positive integer. The first channel comprises the 2 nd, 5 th, 8 th, 11 th channels and the second channel comprises the other of the 13 channels. Take the scan channel i as an example, scan channel i-2, channel i-1, channel i+1, channel i+2 will be covered, where i is a positive integer. The first channel comprises the 3 rd, 8 th, 13 th channels and the second channel comprises the other of the 13 channels. The first channel includes the 1 st, 6 th and 11 th channels and the second channel includes the other channels of the 13 channels based on the frequency of use of the access network.

Further, referring to fig. 2, the adjacent channels of the 3 rd channel include a2 nd channel and a 4 th channel. The next adjacent channels of the 3 rd channel include the 1 st channel and the 5 th channel.

Further, the station receives a beacon frame (beacon) transmitted by the AP via the channel when performing the frequency domain scanning.

Step S200: and if the station receives the beacon frame in the scanning of the first channel, accessing the access point. And the station transmits a probe signaling (probe) to detect whether the target AP is received or not, and finishes scanning other channels when the target AP is detected, so as to establish network connection with the target access point. The station communicates with the target access point via the channel to access the network.

Step S300: if the station does not receive the beacon frame in the scanning of the first channel, the station performs frequency domain scanning based on the center frequency point of the second channel, and detects the beacon frame of the second channel.

Step S400: and if the station receives the beacon frame in the scanning of the second channel, accessing the access point.

Illustratively, the following table is a time required for scanning each of N channels (for example, a 2.4GHz wireless network, only the scanning of the current channel is covered each time one channel is scanned, and no other channels are covered, N is illustrated for example, 13) of the frequency bands of the current wireless network, which are divided equally in order from the lower center frequency point to the higher center frequency point. For ease of understanding, the scan time for each channel is, for example, the same, and is 110ms. But in practice each channel is scanned closely in time but with some variance.

Channel ordering	Coverage channel	Scanning time (ms)
			1	1	110
2	2	220
			3	3	330
4	4	440
			5	5	550
6	6	660
			7	7	770
8	8	880
			9	9	990
10	10	1100
			11	11	1210
12	12	1320
			13	13	1430

Illustratively, the following table is the scan order and scan time for the first 13 channels of fig. 1 to traverse the channels by scanning the first channel and then scanning the second channel. The first channel includes the 2 nd, 5 th, 8 th and 11 th channels, and the second channel includes other channels. In this embodiment, the success rate of scanning adjacent channels by the coverage scanning of two adjacent channels when scanning the current first channel is, for example, 90%. In this embodiment, all first channels are scanned in order from low to high in the channel center frequency, and then all second channels are scanned in order from low to high in the channel center frequency.

In this embodiment, the scanning of the adjacent channels (channel 1, channel 3) is covered when scanning the channel 2, the scanning of the adjacent channels (channel 4, channel 6) is covered when scanning the channel 5, and so on. From the above table, it can be known that the scanning of the second channel is optimized, and the scanning time after the second channel optimization=the scanning sequence of the first channel that can cover the scanning to the present channel×the adjacent channel scanning success rate×the channel scanning time+the self channel scanning order after the optimization×the channel scanning time (1-adjacent channel scanning success rate). Taking the channel 1 as an example, the scanning sequence of the channel 2 which can be scanned to the channel is 1, the adjacent channel scanning success rate is 90%, the channel scanning time is 110ms, and the self channel scanning sequence after optimization is 5. Wherein, the optimized scanning time of the channel 13 is calculated according to the number of the channels being greater than 13.

As can be seen from the above embodiments, the higher the success rate of the adjacent channel scanning, the longer the time saving of the scanning time for the second channel, and correspondingly the shorter the traversing scanning time for the first 13 channels. The adjacent channel scanning success rate is related to a frequency band division channel mode, namely, the selection of the channel center frequency is a key for improving the adjacent channel scanning success rate. Specifically, the selection of the channel center frequency point is related to the actual hardware structure, which is not the focus of the present application and is not described in detail herein.

From the above, the scanning time of the channel traversal can be reduced by scanning the first channels and then scanning the second channels. Further, the network access speed is improved, and the working efficiency of the electronic equipment is also improved.

The embodiment of the disclosure also provides a communication device. Fig. 4 shows a schematic structural diagram of a communication device according to an embodiment of the present disclosure.

Referring to fig. 4, a communication apparatus 500 may be, for example, a station device or a component in a station device that may implement network access in a communication system. The communication device 500 includes a scanning module 510, a connection module 520. The scanning module 510 is configured to perform frequency domain scanning based on a center frequency point of the first channel, and detect a beacon frame of the first channel and a beacon frame of the second channel. The first channel is a partial channel in N channels, the N channels are available channels of a site scanning frequency band, the N channels further comprise second channels, and the second channels are adjacent channels and/or next adjacent channels of the first channels. The connection module 520 is configured to access the access point if a beacon frame is received on the scanned first channel.

Further, the scanning module 510 is further configured to detect the beacon frame of the second channel by performing frequency domain scanning based on the center frequency point of the second channel if the beacon frame is not received during scanning of the first channel. The connection module 520 is further configured to access the access point if a beacon frame is received on the scanned second channel.

Illustratively, a communication device is also provided, and fig. 5 shows a schematic structural diagram of yet another communication device provided according to an embodiment of the present disclosure.

Referring to fig. 5, a communication device 600 includes at least one processor 610, a transceiver 620. The processor 610 and transceiver 620 may be used to perform functions or operations performed by a station, etc. In some embodiments of the present application, the processor 610 and transceiver 620 may also be used to perform functions or operations performed by an access point, etc.

The transceiver 620 is used to communicate with other devices/apparatus over a transmission medium. The processor 610 utilizes the transceiver 620 to transmit and receive data and/or signaling and is used to implement the method of network access in the method embodiments described above.

Illustratively, the transceiver 620 includes radio frequency circuitry and an antenna. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Optionally, the transceiver 620 further includes an input/output device, such as a touch screen, a display screen, a keyboard, etc., mainly used for receiving data input by a user and outputting data to the user.

Further, the communication device 600 may also include at least one memory 630 for storing programs, instructions or data. The processor 610 may be configured to execute programs, instructions or data stored in the memory 630 to implement the network access method in the above-described method embodiment.

After the communication device 6000 is powered on, the processor 610 may read the software program in the memory 630, interpret and execute instructions of the software program, and process data of the software program. When data needs to be transmitted wirelessly, the processor 610 performs baseband processing on the data to be transmitted, and outputs a baseband signal to a radio frequency circuit in the transceiver 620, and the radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal to the outside in the form of electromagnetic waves through an antenna in the transceiver 620. When data is transmitted to the communication device 600, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 610, and the processor 610 converts the baseband signal into data and processes the data.

Memory 630, processor 610, and transceiver 620 are illustratively connected by bus 640. The bus may include, but is not limited to, an address bus, a data bus, a control bus, and the like. It should be noted that the connection medium among the memory 630, the processor 610 and the transceiver 620 is not limited thereto.

The processor 610 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, discrete hardware components, or the like, for performing the methods of network access of the present disclosure. The general purpose processor may be a microprocessor or any conventional processor or the like.

The present disclosure also provides, for example, a non-transitory computer readable storage medium, e.g., having stored thereon a computer program or instructions executable by a processor in a communication device to implement the above-described method of network access.

It should be noted that, the numerical values herein are only used for exemplary illustration, and in other embodiments of the present application, other numerical values may be sampled to implement the present solution, and the present application is not limited to this specific case.

Finally, it should be noted that: it is apparent that the above examples are only examples for clearly illustrating the present application and are not limiting to the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are intended to be within the scope of the present application.

It is also to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting. The use of these terms and expressions is not meant to exclude any equivalents of the features shown and described (or portions thereof), and it is recognized that various modifications are possible and are intended to be included within the scope of the claims. Other modifications, variations, and alternatives are also possible. Accordingly, the claims should be looked to in order to cover all such equivalents.

Claims

1. A method of accessing a network, comprising:

2. The method of claim 1, further comprising:

3. The method according to claim 1 or 2, wherein the first channel is selected according to the frequency of use of the N channels and/or the scanning coverage frequency band.

4. The method of claim 1 or 2, wherein the N channels comprise 1 st to N th channels and the first channel comprises 2 nd, 5 th, 8 th, 11 th channels.

5. The method of claim 1 or 2, wherein the N channels comprise 1 st to N th channels and the first channel comprises 1 st, 6 th, 11 th channels.

6. The method of claim 1 or 2, wherein the N channels comprise 1 st to N th channels and the first channel comprises 3 rd, 8 th, 13 th channels.

7. A communication apparatus, comprising:

8. The communication device of claim 7, wherein the scanning module is further configured to detect a beacon frame of the second channel based on a center frequency point of the second channel if no beacon frame is received while scanning the first channel, the access module being further configured to access an access point if a beacon frame is received while scanning the second channel.

9. The communication device according to claim 7 or 8, wherein the first channel is selected according to the frequency of use of the N channels and/or the scanning coverage frequency band.

10. The communication device of claim 7 or 8, wherein the N channels comprise 1 st to N th channels, the first channel comprises 2 nd, 5, 8, 11 th channels, or the first channel comprises 1 st, 6 th, 11 th channels, or the N channels comprise 1 st to N th channels, and the first channel comprises 3 rd, 8 th, 13 th channels.

11. A communications device comprising a processor and a memory for storing a set of programs, instructions or code, the processor for executing the programs, instructions or code stored in the memory to implement the steps of the method of any of claims 1-6.

12. A computer readable storage medium, wherein the computer readable storage medium has stored thereon a computer program or instructions which, when executed by a processor, is implemented as a method according to any of claims 1-6.