CN112672399A - Terminal access method and device in wireless access equipment networking - Google Patents
Terminal access method and device in wireless access equipment networking Download PDFInfo
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Abstract
The method comprises the steps that any network side access device in a wireless access point and/or wireless access controller device networking receives multicast messages from other network side access devices except the network side access device in a multicast group, wherein the multicast messages at least comprise a media access control address (MAC) of a terminal of a received wireless access signal and a wireless access signal strength indicated value of the terminal, and the access authorization of the current terminal on the network side access device is determined according to the comparison result of the RSSI of the current terminal wireless access signal detected currently and the RSSI of the current terminal wireless access signal carried in the multicast messages. The method and the device optimize terminal access under networking of the wireless access point and/or the wireless access controller device, and enable the terminal to access the access device with the best quality in real time.
Description
Technical Field
The present invention relates to the field of wireless communication, and in particular, to a terminal access method in a wireless access device networking.
Background
In a wireless network, a network of an AP (Access Point) and an AC (Access Controller) device provides a terminal with coverage of wireless signals. The end user is provided with mobile communication capabilities. However, since signal coverage of a single AP and/or AC (Access Controller) device is limited, an end user may often cross from one AP and/or AC service area to another AP and/or AC service area during a moving process.
Taking wireless roaming as an example, in order to avoid network communication interruption when a mobile user switches between different APs and/or ACs, a terminal is required to support wireless roaming. Wireless roaming means that when a terminal moves to a critical area of two APs and/or AC coverage, the terminal associates with a new AP and disassociates from the original AP, and maintains uninterrupted network connection in the process. In short, like the mobile phone function, the mobile phone can provide uninterrupted and seamless call capability when moving from the coverage of one base station to the coverage of another base station.
The roaming agreement is essentially to access the terminal to the AP and/or AC with the best signal quality, and both the AP and/or AC and the wireless terminal are required to support the roaming agreement, but many wireless terminals in the market do not support the wireless roaming agreement at present, or some terminals support the wireless roaming agreement badly, and the roaming effect is poor.
The wireless terminal not only causes the terminal to frequently access the AP with worse signal quality during wireless roaming, but also accesses the AP with worse signal during random access of the AP, thereby affecting data transmission.
Disclosure of Invention
The invention provides a terminal access method in wireless access equipment networking, which is used for improving the reliability of terminal roaming access.
The invention provides a terminal access method in wireless access device networking, which comprises that, at any network side access device in the wireless access point and/or wireless access controller device networking,
receiving multicast messages from other network side access devices except the network side access device in a multicast group, wherein the multicast messages at least comprise the media access control address MAC address of the terminal of the received wireless access signal and the received wireless access signal strength indication value RSSI,
the access equipment of the network side determines the access authorization of the current terminal at the access equipment of the network side according to the comparison result of the currently detected RSSI of the wireless access signal of the current terminal and the RSSI of the wireless access signal of the current terminal carried in the multicast message.
When the network side access equipment is online, receiving a multicast message including a multicast address, and adding the multicast message into a multicast group;
the currently detected wireless access signal of the current terminal at least carries the MAC address of the terminal, and the network side access equipment detects the strength of the wireless access signal of the current terminal according to the received wireless access signal to obtain the RSSI of the wireless access signal of the current terminal.
Preferably, the determining the access authorization of the current terminal at the access device of the network side according to the comparison result of the currently detected RSSI of the current terminal wireless access signal and the RSSI of the current terminal wireless access signal carried in the multicast message includes,
checking whether the access equipment on the network side receives the wireless access signal from the current terminal,
if yes, comparing the detected RSSI of the current terminal with the RSSI of the current terminal carried in each multicast message,
otherwise, the current terminal MAC address and RSSI carried in the multicast message are reserved, and the duration of the continuous reservation meets the set first time threshold.
Preferably, the retaining the current terminal MAC address and RSSI carried in the multicast packet and the duration of the continuous retention satisfy a set first time threshold, further includes,
judging whether the access equipment of the network side receives the wireless access signal of the current terminal within a first time threshold value,
if yes, executing the step of comparing the detected RSSI of the current terminal with the RSSI of the current terminal carried in each multicast message,
otherwise, when the duration of the continuous reservation meets the set first time threshold, deleting the reserved MAC address and RSSI.
Preferably, the comparing the detected RSSI of the current terminal with the RSSI of the current terminal carried in each multicast packet includes,
if the RSSI of the current terminal is greater than the RSSI of the current terminal carried in each multicast message, the multicast message is sent to other equipment, and the multicast message at least comprises the MAC address of the current terminal and the detected RSSI of the current terminal;
and if not, forbidding the current terminal to access the network side access equipment, and keeping the access forbidding duration to meet the set second time threshold.
Preferably, said sending the multicast message to the other device further comprises,
the RSSI of the detected wireless access signal of the current terminal is compared with the RSSI of the detected wireless access signals of the other terminals,
if the RSSI of the wireless access signal of the current terminal is detected to be larger than the RSSI of the wireless access signals of other terminals, the access equipment at the network side does not process,
and if not, taking the other terminal which detects the other wireless access signal as the current terminal, and executing the step of determining the access authorization of the current terminal at the access equipment of the network side according to the comparison result of the RSSI of the wireless access signal of the current terminal which is currently detected and the RSSI of the wireless access signal of the current terminal carried in the multicast message.
Preferably, the prohibiting the current terminal from accessing the network side access device includes adding the current terminal to a blacklist for prohibiting access.
Preferably, the first time threshold is an average time for establishing a connection between the terminal and the network side access device; the second time threshold is greater than the first time threshold.
The invention provides a wireless access device, which comprises a memory and a processor, wherein,
the memory stores a computer program that is executed by the computer,
the processor executes the computer program to realize the steps of any one of the above terminal access methods in the wireless access device networking.
The invention provides a computer readable storage medium, in which a computer program is stored, and the computer program, when executed by a processor, implements the steps of any one of the above-mentioned terminal access methods in wireless access device networking.
According to the method and the device, a multicast mechanism is added to the wireless access equipment, the signal quality of the terminal accessed by each access equipment is multicast, and then each access equipment determines whether to authorize the terminal to access according to the signal quality of the access equipment, so that the access equipment with the best signal quality can be selected from the access equipment to which the terminal is supposed to access in a global angle to allow the terminal to access, the real-time performance of the network access equipment with the best wireless access signal quality of the terminal is improved, the terminal access under wireless networking is optimized, the terminal which does not support roaming can also access the network access equipment with the best signal quality, the user internet access experience is improved, the authorization of the terminal access is controlled through a blacklist, the implementation scheme is simple, and the change of the existing equipment is few.
Drawings
Fig. 1 is a schematic diagram of a typical AC and AP networking.
Fig. 2 is a schematic diagram of a multicast message.
Fig. 3 is a schematic flow chart of any AP device processing a multicast packet received by the AP device.
Fig. 4 is a diagram of a wireless access device.
Detailed Description
For the purpose of making the objects, technical means and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings.
For convenience of description, in the present application, the AC and/or AP for wireless signal coverage are collectively referred to as a wireless access device.
The invention makes each wireless access device providing current wireless signal for terminal form multicast group, and carries the wireless access signal strength and media access control address (MAC address) received by each wireless access device from terminal in multicast message to multicast in multicast group, so that the wireless access device with best signal quality is reserved for current access of terminal.
The following description will be made by taking a network in which one AC access device is connected to a plurality of AP access devices as an example. It should be understood that the networking topology of the AC and the AP is not so limited and may include multi-layer, multi-connection networking.
Referring to fig. 1, fig. 1 is a schematic diagram of a typical AC and AP networking. The AC access device is connected with n AP access devices, where n is a natural number greater than or equal to 1, and is illustrated as 3 in the figure. Taking a terminal that does not support a roaming agreement as an example, when the terminal that does not support the roaming agreement is to access the network, in order to enable the terminal to wirelessly access the AP access device with the best signal quality, referring to fig. 2, fig. 2 is a schematic diagram of a multicast packet, and the network side access device performs the following processing:
when the network side access device is on line, for example, after each AP is on line, once a multicast message including a multicast address is received, the network side access device is added into a multicast group;
when a terminal accesses a current wireless network, the terminal sends a wireless access signal message, and the message carries the MAC address of the terminal;
each AP device in the current wireless network receives a wireless access signal from a terminal respectively, and the strength of the wireless access signal is detected to obtain a wireless access signal strength indication value (RSSI value);
each AP device sends a multicast message, wherein the multicast message carries the MAC address of a terminal corresponding to the wireless access signal received by the multicast message and the detected RSSI value, so that the condition of the wireless access signal received by each AP is obtained by all APs in the network;
for example, the AP1 receives a wireless access signal of a terminal with a MAC address of MAC1, and when detecting that the first RSSI value is-60, sends a first multicast packet, where the packet carries the MAC address of the terminal and the first RSSI value; similar to the AP1, the AP2 receives a wireless access signal of a terminal with a MAC address of MAC1, detects that the first RSSI is-70, and the AP2 sends a second multicast packet, where the packet carries the MAC address of the terminal and a second RSSI value; the AP3 receives the wireless access signal of the terminal whose MAC address is MAC1, detects that the first RSSI is-80, and the AP3 sends a third multicast packet, where the packet carries the MAC address of the terminal and the third RSSI value.
Each AP device receives multicast packets sent by other APs except the AP, for example, the AP1 receives the second multicast packet and the third multicast packet, the AP2 receives the first multicast packet and the third multicast packet, and the AP3 receives the second multicast packet and the first multicast packet.
Referring to fig. 3, fig. 3 is a schematic flow chart of any AP device processing a multicast packet received by the AP device.
Preferably, in order to reduce the memory usage, the retained multicast packet may only retain the MAC address and RSSI therein.
if the RSSI received by the AP is larger than the RSSI carried in the multicast message, the MAC address and the RSSI of the terminal are carried in the multicast message for sending so that other APs can acquire the RSSI of the current terminal received by the AP,
further, the local AP compares the RSSI of the received wireless access signal of the terminal with the RSSI of the received wireless access signal of other terminal,
if the RSSI of the wireless access signal of the terminal is greater than the RSSI of the wireless access signal of other terminals, no processing is carried out, so that other APs set the terminal in a forbidden access state, and the terminal is connected to the AP; otherwise, the terminal that detects another wireless access signal is taken as the current terminal, and the step 301 is returned to.
And if the RSSI received by the AP is less than or equal to the RSSI carried in the multicast message, setting the terminal as access prohibition, and keeping the access prohibition state to be continued to a set second time threshold so that the terminal is connected with the AP with better quality signals.
One embodiment of setting the forbidden access may be to list the forbidden access terminals as a black list.
Still taking the example that the terminal described in fig. 2 accesses 3 APs, the wireless access signal and the multicast packet of the same terminal received by each AP are shown in the following table:
according to the processing of step 301-302, then:
the AP1 receives the RSSI of the same terminal sent by the AP2 and the AP3, wherein the RSSI is-70 and-80 respectively, and is smaller than the RSSI (-60) of the AP1, and the AP1 does not carry out any treatment;
the AP2 receives the RSSI of the same terminal from AP1 and AP3, which is-60 and-80 respectively, and when the RSSI from AP1 is received, the RSSI is found to be greater than itself, the terminal is added to the blacklist and lasts for 10s, and when the RSSI from AP3 is received, the RSSI is found to be less than itself, and no processing is performed.
AP3 will receive RSSI of the same terminal from AP1 and AP2 as-60 and-70 respectively, and if any one of them finds greater than its own RSSI, it will blacklist the terminal for 10 s.
Thus, both AP2 and AP3 blacklist the terminal such that the terminal cannot access and eventually accesses the AP1 with the best signal quality.
According to the method, the multicast mechanism is added into the AP and/or AC networking to multicast the signal quality of the terminal accessed by each access device, and then each access device determines whether to authorize the terminal to access according to the signal quality of the access device, so that the AP with the best signal quality can be selected from the access devices to which the terminal is supposed to access in a global angle to allow the terminal to access, the real-time performance of the terminal to wirelessly access the AP with the best signal quality is improved, the terminal access under the AP and/or AC networking is optimized, the terminal which does not support roaming can access the AP with the best signal quality, the user internet surfing experience is improved, the authorization of the terminal access is controlled through a blacklist, the implementation scheme is simple, and the change of existing devices is few.
Referring to fig. 4, fig. 4 is a schematic diagram of a wireless access device. The access device comprises a first access point and a second access point,
a multicast message receiving module for receiving multicast messages from other network side access devices except the local network side access device in the multicast group, wherein the multicast messages at least comprise the media access control address MAC address of the terminal of the received wireless access signal and the wireless access signal strength indicating value RSSI of the terminal,
and the access control module determines the access authorization of the current terminal on the access equipment of the network side according to the comparison result of the currently detected RSSI of the current terminal wireless access signal and the RSSI of the current terminal wireless access signal carried in the multicast message.
The access equipment also comprises a detection module for receiving the wireless access signal from the terminal and detecting the RSSI value of the wireless access signal;
and the multicast message sending module is used for sending the multicast message of the equipment, and the multicast message at least comprises a terminal MAC address of the wireless access signal and a detected wireless access signal strength indicating value RSSI.
The application also provides a wireless access device, which can be an AP or an AC, where the access device includes a memory and a processor, where the memory stores a computer program, and the processor executes the computer program to implement the steps of the method for accessing a terminal in a wireless access device networking.
The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.
An embodiment of the present invention further provides a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the following steps:
receiving multicast messages from other network side access devices except the network side access device in a multicast group, wherein the multicast messages at least comprise a media access control address (MAC) address of a terminal of a received wireless access signal and a wireless access signal strength indication value (RSSI) of the terminal,
and determining the access authorization of the current terminal at the access equipment of the network side according to the comparison result of the currently detected RSSI of the current terminal wireless access signal and the RSSI of the current terminal wireless access signal carried in the multicast message.
For the device/network side access device/storage medium embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for the relevant points, refer to the partial description of the method embodiment.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A terminal access method in wireless access equipment networking is characterized in that the method comprises that, at any network side access equipment in the wireless access point and/or wireless access controller equipment networking,
receiving multicast messages from other network side access devices except the network side access device in a multicast group, wherein the multicast messages at least comprise the media access control address MAC address of the terminal of the received wireless access signal and the received wireless access signal strength indication value RSSI,
the access equipment of the network side determines the access authorization of the current terminal at the access equipment of the network side according to the comparison result of the currently detected RSSI of the wireless access signal of the current terminal and the RSSI of the wireless access signal of the current terminal carried in the multicast message.
2. The method of claim 1, wherein the network side access device receives a multicast message including a multicast address when it comes online, and joins a multicast group;
the currently detected wireless access signal of the current terminal at least carries the MAC address of the terminal, and the network side access equipment detects the strength of the wireless access signal of the current terminal according to the received wireless access signal to obtain the RSSI of the wireless access signal of the current terminal.
3. The method of claim 1, wherein the determining the access authorization of the current terminal at the access device on the network side according to the comparison result between the currently detected RSSI of the wireless access signal of the current terminal and the RSSI of the wireless access signal of the current terminal carried in the multicast message comprises,
checking whether the access equipment on the network side receives the wireless access signal from the current terminal,
if yes, comparing the detected RSSI of the current terminal with the RSSI of the current terminal carried in each multicast message,
otherwise, the current terminal MAC address and RSSI carried in the multicast message are reserved, and the duration of the continuous reservation meets the set first time threshold.
4. The method of claim 3, wherein the current terminal MAC address and RSSI carried in the multicast message are retained for a duration that satisfies a set first time threshold, further comprising,
judging whether the access equipment of the network side receives the wireless access signal of the current terminal within a first time threshold value,
if yes, executing the step of comparing the detected RSSI of the current terminal with the RSSI of the current terminal carried in each multicast message,
otherwise, when the duration of the continuous reservation meets the set first time threshold, deleting the reserved MAC address and RSSI.
5. The method of claim 4, wherein the comparing the detected RSSI of the current terminal with the RSSI of the current terminal carried in each multicast packet comprises,
if the RSSI of the current terminal is greater than the RSSI of the current terminal carried in each multicast message, the multicast message is sent to other equipment, and the multicast message at least comprises the MAC address of the current terminal and the detected RSSI of the current terminal;
and if not, forbidding the current terminal to access the network side access equipment, and keeping the access forbidding duration to meet the set second time threshold.
6. The method of claim 5, further comprising, after said sending the multicast message to the other device,
the RSSI of the detected wireless access signal of the current terminal is compared with the RSSI of the detected wireless access signals of the other terminals,
if the RSSI of the wireless access signal of the current terminal is detected to be larger than the RSSI of the wireless access signals of other terminals, the access equipment at the network side does not process,
and if not, taking the other terminal which detects the other wireless access signal as the current terminal, and executing the step of determining the access authorization of the current terminal at the access equipment of the network side according to the comparison result of the RSSI of the wireless access signal of the current terminal which is currently detected and the RSSI of the wireless access signal of the current terminal carried in the multicast message.
7. The method of claim 5, wherein the prohibiting the current terminal from accessing the local network-side access device comprises adding the current terminal to a blacklist for prohibited access.
8. The method of claim 3, wherein the first time threshold is an average time for the terminal to establish a connection with the network-side access device; the second time threshold is greater than the first time threshold.
9. A wireless access device comprising a memory and a processor, wherein,
the memory stores a computer program that is executed by the computer,
the processor executes the computer program to implement the steps of the terminal access method in the wireless access device networking according to any one of claims 1 to 8.
10. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, implements the steps of a method for accessing a terminal in a wireless access device networking according to any one of claims 1 to 8.
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Application publication date: 20210416 |