WO2022027466A1 - Solution ssid multiple dans un réseau maillé wi-fi - Google Patents

Solution ssid multiple dans un réseau maillé wi-fi Download PDF

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Publication number
WO2022027466A1
WO2022027466A1 PCT/CN2020/107473 CN2020107473W WO2022027466A1 WO 2022027466 A1 WO2022027466 A1 WO 2022027466A1 CN 2020107473 W CN2020107473 W CN 2020107473W WO 2022027466 A1 WO2022027466 A1 WO 2022027466A1
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WIPO (PCT)
Prior art keywords
data
vlan tag
ssid
extender
backhaul
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PCT/CN2020/107473
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English (en)
Inventor
Liang Wang
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Arris Enterprises Llc
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Publication date
Application filed by Arris Enterprises Llc filed Critical Arris Enterprises Llc
Priority to PCT/CN2020/107473 priority Critical patent/WO2022027466A1/fr
Publication of WO2022027466A1 publication Critical patent/WO2022027466A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • Embodiments of the invention relate to enabling multiple SSIDs among network access points that are connected over a backhaul.
  • the root APD includes memory that stores first VLAN tag data associated with the first SSID and second VLAN tag data associated with the second SSID, and processor configured to execute instructions stored in memory, to cause the device to: maintain identification of the first SSID on first data frames to be communicated through the backhaul for the first SSID by adding the first VLAN tag data to the VLAN tag of each of the first data frames, respectively, to be communicated on the first SSID; communicate the first data frames, to be communicated through the backhaul for the first SSID, with the first VLAN tag data in the VLAN tag of each of the communicated first data frames, respectively, over the backhaul; maintain identification of the second SSID on second data frames to be communicated through the backhaul for the second SSID by adding the second VLAN tag data to the VLAN tag of each
  • the processor is further configured to execute instructions stored on the memory to cause the root APD to: receive first extender data frames, communicated from the extender APD through the backhaul, to be communicated to an external network, each of the first extender data frames having the first VLAN tag data in a respective first extender data frame VLAN tag; remove, from each of the received first extender data frames, the first VLAN tag data from a respective first extender data frame VLAN tag; and communicate the received first extender data frames, each without the first VLAN tag data in a respective first extender data frame VLAN tag, to the external network.
  • the processor is further configured to execute instructions stored on the memory to cause the root APD to communicate the first data frames over a wireless backhaul.
  • the processor is further configured to execute instructions stored on the memory to cause the root APD to communicate the first data frames over an Ethernet backhaul.
  • the processor is further configured to execute instructions stored on the memory to cause the root APD to generate a data structure associating the first VLAN tag data to the first SSID and associating the second VLAN tag data to the second SSID; and the memory is configured to store the generated data structure.
  • the processor is further configured to execute instructions stored on the memory to cause the root APD to communicate the generated data structure over the backhaul to the extender APD.
  • FIG. 1 Other aspects of the present invention are drawn to a method of using a root APD configured to connect to an external network and to establish a first SSID, a second SSID and a backhaul, the method comprising: maintaining, via a processor, identification of the first SSID on first data frames to be communicated through the backhaul for the first SSID by adding the first VLAN tag data to a VLAN tag of each of the first data frames, respectively, to be communicated on the first SSID; communicating, via the processor, the first data frames, to be communicated through the backhaul for the first SSID, with the first VLAN tag data in the VLAN tag of each of the communicated first data frames, respectively, over the backhaul; maintaining, via a processor, identification of the second SSID on second data frames to be communicated through the backhaul for the second SSID by adding the second VLAN tag data to a VLAN tag of each of the second data frames, respectively, to be communicated on the second SSID; and communicating, via
  • the method further comprises: receiving, via the processor, first extender data frames, communicated from the extender APD through the backhaul, to be communicated to an external network, each of the first extender data frames having the first VLAN tag data in a respective first extender data frame VLAN tag; removing, via the processor, from each of the received first extender data frames, the first VLAN tag data from a respective first extender data frame VLAN tag; and communicating, via the processor, the received first extender data frames, each without the first VLAN tag data in a respective first extender data frame VLAN tag, to the external network.
  • the method of communicating the first data frames comprises communicating the first data frames over a wireless backhaul.
  • the method of communicating the first data frames comprises communicating the first data frames over an Ethernet backhaul.
  • the method of using a root APD configured to connect to an external network and to establish a first SSID, a second SSID and a backhaul further comprises: generating, via the processor, a data structure associating the first VLAN tag data to the first SSID and associating the second VLAN tag data to the second SSID; and storing, into the memory, the generated data structure.
  • the method further comprises communicating, via the processor, the generated data structure over the backhaul to the extender APD.
  • FIG. 1 Other aspects of the present invention are drawn to non-transitory, computer-readable media having computer-readable instructions stored thereon, the computer-readable instructions being capable of being read by a root APD configured to connect to an external network and to establish a first SSID, a second SSID and a backhaul, wherein the computer-readable instructions are capable of instructing the root APD to perform the method comprising: maintaining, via a processor, identification of the first SSID on first data frames to be communicated through the backhaul for the first SSID by adding the first VLAN tag data to a VLAN tag of each of the first data frames, respectively, to be communicated on the first SSID; communicating, via the processor, the first data frames, to be communicated through the backhaul for the first SSID, with the first VLAN tag data in the VLAN tag of each of the communicated first data frames, respectively, over the backhaul; maintaining, via a processor, identification of the second SSID on second data frames to be communicated through the backhaul for the
  • the computer-readable instructions are capable of instructing the root APD to perform the method further comprising: receiving, via the processor, first extender data frames, communicated from the extender APD through the backhaul, to be communicated to an external network, each of the first extender data frames having the first VLAN tag data in a respective first extender data frame VLAN tag; removing, via the processor, from each of the received first extender data frames, the first VLAN tag data from a respective first extender data frame VLAN tag; and communicating, via the processor, the received first extender data frames, each without the first VLAN tag data in a respective first extender data frame VLAN tag, to the external network.
  • the computer-readable instructions are capable of instructing the root APD to perform the method wherein the communicating the first data frames comprise communicating the first data frames over a wireless backhaul.
  • the computer-readable instructions are capable of instructing the root APD to perform the method wherein the communicating the first data frames comprise communicating the first data frames over an Ethernet backhaul.
  • the computer-readable instructions are capable of instructing the root APD to perform the method further comprising: generating, via the processor, a data structure associating the first VLAN tag data to the first SSID and associating the second VLAN tag data to the second SSID; and storing, into the memory, the generated data structure.
  • the computer-readable instructions are capable of instructing the root APD to perform the method further comprising communicating, via the processor, the generated data structure over the backhaul to the extender APD.
  • FIG. 1 illustrates a wireless mesh network with client devices connected to different SSIDs through a root APD;
  • FIG. 2 illustrates a wireless mesh network with client devices connected to the same SSID through an extender APD;
  • FIG. 3 illustrates a wireless mesh network with client devices connected to different SSIDs through a root APD in accordance with aspects of the present invention
  • FIG. 4 illustrates a wireless mesh network with client devices connected to different SSIDs through an extended APD in accordance with aspects of the present invention
  • FIG. 5 illustrates a VLAN data frame in accordance with aspects of the present invention
  • FIG. 6 illustrates a data structure in accordance with aspects of the present invention
  • FIGs. 7A-B illustrate data frames flowing to client devices connected to the root APD on multiples SSIDs in accordance with aspects of the present invention
  • FIGs. 8A-C illustrate data frames flowing to client devices connected to the extender APD on multiple SSIDs in accordance with aspects of the present invention
  • FIGs. 9A-D illustrate data frames flowing to client devices connected to the root and extender APDs in accordance with aspects of the present invention
  • FIGs. 10A-C illustrate data frames flowing from the client device connected to the extender APD in accordance with aspects of the present invention
  • FIG. 11 illustrates a method of generating and storing a data structure that associates VLAN tag data with SSIDs in accordance with aspects of the present invention
  • FIG. 12 illustrates a method of communicating data frames to the root APD, the backhaul, the extender APD, then the SSID in accordance with aspects of the present invention.
  • FIG. 13 illustrates a method of communicating data frames to the SSID, the extender APD, the backhaul, then the root APD in accordance with aspects of the present invention.
  • Wireless communications methods such as Wi-Fi are commonly used to allow client devices such as computers and smartphones to connect to networks.
  • a simple Wi-Fi configuration consists of a single base station that connects to one or more client devices.
  • a Wi-Fi base station offers coverage only within a limited area.
  • Wi-Fi coverage can be extended to larger areas using various methods.
  • One method uses Wi-Fi range extenders to improve coverage.
  • range extenders One limitation of range extenders is that each range extender must be directly connected to the base station, which restricts the wireless network to a hub-and-spoke topology and limits the overall coverage area.
  • Wi-Fi mesh networks offer advantages over range extenders.
  • Wi-Fi mesh networks comprise a root APD and one or more extender APDs.
  • the extender APDs can be arranged in any topology as long as at least one extender APD connects directly to the root APD. Any other extender APD can connect either to the root APD or to another extender APD.
  • the root and extender APDs configure themselves to form the best network topology for the given environmental conditions. APDs can be added to or subtracted from the network, or moved around the environment, as dictated by changing requirements.
  • FIG. 1 illustrates a wireless mesh network with client devices 120 and 122 connected over wireless network 109 to different SSIDs 110 and 112 through a root APD 100.
  • root APD 100 is arranged to communicate to external network 114 through network device 108.
  • Root APD 100 establishes wireless network 109 with SSIDs 110 and 112.
  • Root APD 100 is connected to client device 120 through SSID 110 and to client device 122 through SSID 112.
  • Root APD 100 is connected to extender APD 130 through backhaul 116.
  • Root APD 100 is any device or method that enable client devices to connect wirelessly to a wired network.
  • root APD 100 establishes wireless network 109 using Wi-Fi network protocols.
  • Network device 108 is any device or method that connects one network with another.
  • network device 108 is a router.
  • network device 108 is a switch.
  • network device 108 may combine functions of switch, router, and gateway.
  • External network 114 is any communications network connected to network device 108.
  • external network 114 may be the Internet, as provided through a cable telecommunications system.
  • Client devices 120 and 122 are any devices used by end-users.
  • client devices 120 and 122 may be personal computers, smart phones, tablets, Internet-enabled TVs, or video game consoles.
  • SSIDs 110 and 112 are service-set identifiers, or network names, that form separate logical wireless networks within wireless network 109.
  • Client devices 120 and 122 may be authorized or be restricted to connect to none, one, or several of SSIDs 110 and 112.
  • SSID 120 may be labeled “Private” and SSID 122 may be labeled “Guest. ”
  • Extender APD 130 is any device or method that extends wireless network 109 to areas or environments that may not be covered by root APD 100 alone.
  • Backhaul 116 is any device or method that connects root APD 100 and extender APD 130.
  • backhaul 116 may be a Wi-Fi channel.
  • backhaul 116 may be a wired Ethernet cable.
  • Wireless networks allow client devices to move to different points in the coverage area. When client devices move to a different area, they may be connected through a different APD. This will now be discussed with reference to FIG. 2.
  • FIG. 2 illustrates a wireless mesh network with client devices 120 and 122 connected over wireless network 109 to SSID 110 through extender APD 130.
  • extender APD 130 can only support one SSID.
  • extender APD 130 can only support SSID 110.
  • Client devices 120 and 122 must connect to SSID 110 if they are in range of extender APD 130 but out of range of root APD 100.
  • a system and method in accordance with the present disclosure enables multiple SSIDs on all APDs in a wireless mesh network.
  • each SSID enabled in a wireless mesh network is associated with unique VLAN tag data.
  • Data frames traveling along the backhaul between root APD and extender APDs are tagged with VLAN tag data.
  • Root access point and extender APDs examine VLAN tag data and communicate the data frames on the associated SSIDs.
  • Root access point and extender APDs remove VLAN tag data before communicating data frames to client devices or to external networks.
  • Root access point and extender APDs are able to distinguish data frames assigned to different SSIDs and thus are able to support multiple SSIDs throughout the entire wireless network.
  • FIG. 3 illustrates a wireless mesh network with client devices 120 and 122 connected to SSIDs 110 and 112 through root APD 300 in accordance with aspects of the present invention.
  • root APD 300 is arranged to communicate to external network 114 through network device 108.
  • Root APD 300 establishes wireless network 109 with SSIDs 110 and 112.
  • Root APD 300 is connected to client device 120 through SSID 110 and to client device 122 through SSID 112.
  • Root APD 300 is connected to extender APD 330 through backhaul 116.
  • Root APD 300 includes processor 302, memory 304, and radio 306.
  • Extender APD 330 includes processor 332, memory 334, and radio 336. Memories 304 and 334 hold a data structure 310.
  • Processor 302 can include a dedicated control circuit, CPU, a hardware processor such as a microprocessor, a multi-core processor, a single core processor, a field programmable gate array (FPGA) , a microcontroller, an application specific integrated circuit (ASIC) , a digital signal processor (DSP) , or other similar processing device capable of executing any type of instructions, algorithms, or software for controlling the operation and functions of the root APD 300 in accordance with the embodiments described in the present disclosure.
  • a hardware processor such as a microprocessor, a multi-core processor, a single core processor, a field programmable gate array (FPGA) , a microcontroller, an application specific integrated circuit (ASIC) , a digital signal processor (DSP) , or other similar processing device capable of executing any type of instructions, algorithms, or software for controlling the operation and functions of the root APD 300 in accordance with the embodiments described in the present disclosure.
  • Memory 304 can store various programming, and user content, and data including data structure 310. As will be described in greater detail below, memory 304 includes instructions that may be used by processor 302 to cause root APD 300 to: maintain identification of a first SSID on first packets to be communicated through backhaul 116 for the first SSID by adding the first VLAN tag data to a VLAN tag of each of the first packets, respectively, to be communicated on the first SSID; communicate the first packets, to be communicated through backhaul 116 for the first SSID, with the first VLAN tag data in the VLAN tag of each of the communicated first packets, respectively, over backhaul 116; maintain identification of a second SSID on second packets to be communicated through backhaul 116 for the second SSID by adding the second VLAN tag data to a VLAN tag of each of the second packets, respectively, to be communicated on the second SSID; and communicate the second packets, to be communicated through backhaul 116 for the second SS
  • memory 304 includes additional instructions that may be used by processor 302 to cause root APD 300 to: maintain identification of the first SSID on first packets that are communicated through backhaul 116 for the first SSID, which include the first VLAN tag data in the VLAN tag of each of the first packets, respectively; receive the first packets that are communicated through backhaul 116 for the first SSID, with the first VLAN tag data in the VLAN tag of each of the communicated first packets, respectively, over backhaul 116; maintain identification of the second SSID on second packets that are communicated through backhaul 116 for the second SSID, which include the second VLAN tag data in the VLAN tag of each of the second packets, respectively; and receive the second packets that are communicated through backhaul 116 for the second SSID, with the second VLAN tag data in the VLAN tag of each of the communicated second packets, respectively, over backhaul 116.
  • memory 304 includes additional instructions that may be used by processor 302 to cause root APD 300 to: receive first extender packets, communicated from extender APD 330 through backhaul 116, to be communicated to external network 114, each of the first extender packets having the first VLAN tag data in a respective first extender packet VLAN tag; remove, from each of the received first extender packets, the first VLAN tag data from a respective first extender packet VLAN tag; and communicate the received first extender packets, each without the first VLAN tag data in a respective first extender packet VLAN tag, to external network 114.
  • memory 304 includes additional instructions that may be used by processor 302 to cause root APD 300 to communicate the first packets over backhaul 116 being a wireless backhaul.
  • memory 304 includes additional instructions that may be used by processor 302 to cause root APD 300 to communicate the first packets over backhaul 116 being an Ethernet backhaul.
  • memory 304 includes additional instructions that may be used by processor 302 to cause root APD 300 to generate data structure 310 associating the first VLAN tag data to the first SSID and associating the second VLAN tag data to the second SSID, wherein memory 304 is configured to store data structure 310.
  • memory 304 includes additional instructions that may be used by processor 302 to cause root APD 300 to communicate data structure 310 over backhaul 116 to extender APD 330.
  • Radio 306 (and preferably two or more radios) may also be referred to as a wireless communication circuit, such as a Wi-Fi WLAN interface radio transceiver, and is configured to communicate with extenders AP 330.
  • Radio 306 includes one or more antennas and communicates wirelessly via one or more of the 2.4 GHz band, the 5 GHz band, and the 6 GHz band, or at the appropriate band and bandwidth to implement any IEEE 802.11 Wi-Fi protocols, such as the Wi-Fi 4, 5, 6, or 6E protocols.
  • Root AP 300 can also be equipped with a radio transceiver/wireless communication circuit to implement a wireless connection in accordance with any Bluetooth protocols, Bluetooth Low Energy (BLE) , or other short range protocols that operate in accordance with a wireless technology standard for exchanging data over short distances using any licensed or unlicensed band such as the CBRS band, 2.4 GHz bands, 5 GHz bands, or 6 GHz bands, RF4CE protocol, ZigBee protocol, Z-Wave protocol, or IEEE 802.15.4 protocol.
  • BLE Bluetooth Low Energy
  • Processor 332 can include a dedicated control circuit, CPU, a hardware processor such as a microprocessor, a multi-core processor, a single core processor, a field programmable gate array (FPGA) , a microcontroller, an application specific integrated circuit (ASIC) , a digital signal processor (DSP) , or other similar processing device capable of executing any type of instructions, algorithms, or software for controlling the operation and functions of the extender APD 330 in accordance with the embodiments described in the present disclosure.
  • a hardware processor such as a microprocessor, a multi-core processor, a single core processor, a field programmable gate array (FPGA) , a microcontroller, an application specific integrated circuit (ASIC) , a digital signal processor (DSP) , or other similar processing device capable of executing any type of instructions, algorithms, or software for controlling the operation and functions of the extender APD 330 in accordance with the embodiments described in the present disclosure.
  • Memory 334 can store various programming, and user content, and data including data structure 310. As will be described in greater detail below, memory 334 includes instructions that may be used by processor 332 to cause extender AP 330 to: maintain identification of the first SSID on first packets to be communicated through backhaul 116 for the first SSID by adding the first VLAN tag data to a VLAN tag of each of the first packets, respectively, to be communicated on the first SSID; communicate the first packets, to be communicated through backhaul 116 for the first SSID, with the first VLAN tag data in the VLAN tag of each of the communicated first packets, respectively, over backhaul 116; maintain identification of the second SSID on second packets to be communicated through backhaul 116 for the second SSID by adding the second VLAN tag data to a VLAN tag of each of the second packets, respectively, to be communicated on the second SSID; and communicate the second packets, to be communicated through backhaul 116 for the second SS
  • memory 334 includes additional instructions that may be used by processor 332 to cause extender APD 330 to: maintain identification of the first SSID on first packets that are communicated through backhaul 116 for the first SSID, which include the first VLAN tag data in the VLAN tag of each of the first packets, respectively; receive the first packets that are communicated through backhaul 116 for the first SSID, with the first VLAN tag data in the VLAN tag of each of the communicated first packets, respectively, over backhaul 116; maintain identification of the second SSID on second packets that are communicated through backhaul 116 for the second SSID, which include the second VLAN tag data in the VLAN tag of each of the second packets, respectively; and receive the second packets that are communicated through backhaul 116 for the second SSID, with the second VLAN tag data in the VLAN tag of each of the communicated second packets, respectively, over backhaul 116.
  • memory 334 includes additional instructions that may be used by processor 332 to cause extender APD 330 to: receive first extender packets, communicated from root APD 300 through backhaul 116, that were communicated from external network 114, each of the first extender packets having the first VLAN tag data in a respective first extender packet VLAN tag; remove, from each of the received first extender packets, the first VLAN tag data from a respective first extender packet VLAN tag; and communicate the received first extender packets, each without the first VLAN tag data in a client device.
  • memory 334 includes additional instructions that may be used by processor 332 to cause extender APD 330 to communicate the first packets over backhaul 116 being a wireless backhaul.
  • memory 334 includes additional instructions that may be used by processor 332 to cause extender APD 330 to communicate the first packets over backhaul 116 being an Ethernet backhaul.
  • memory 334 includes additional instructions that may be used by processor 332 to cause extender APD 330 to generate data structure 310 associating the first VLAN tag data to the first SSID and associating the second VLAN tag data to the second SSID, wherein memory 334 is configured to store data structure 310.
  • memory 334 includes additional instructions that may be used by processor 332 to cause extender APD 330 to communicate data structure 310 over backhaul 116 to root APD 300.
  • Radio 336 (and preferably two or more radios) , may also be referred to as a wireless communication circuit, such as a Wi-Fi WLAN interface radio transceiver, and is configured to communicate with root AP 300.
  • Radio 336 includes one or more antennas and communicates wirelessly via one or more of the 2.4 GHz band, the 5 GHz band, and the 6 GHz band, or at the appropriate band and bandwidth to implement any IEEE 802.11 Wi-Fi protocols, such as the Wi-Fi 4, 5, 6, or 6E protocols.
  • Extender AP 330 can also be equipped with a radio transceiver/wireless communication circuit to implement a wireless connection in accordance with any Bluetooth protocols, Bluetooth Low Energy (BLE) , or other short range protocols that operate in accordance with a wireless technology standard for exchanging data over short distances using any licensed or unlicensed band such as the CBRS band, 2.4 GHz bands, 5 GHz bands, or 6 GHz bands, RF4CE protocol, ZigBee protocol, Z-Wave protocol, or IEEE 802.15.4 protocol.
  • BLE Bluetooth Low Energy
  • Data structure 310 contains SSIDs that correspond to unique VLAN tag data.
  • Data structure 310 is stored in memories 304 and 334.
  • processors 302 and 332, memories 304 and 334, and radios 306 and 336 are illustrated as individual devices of root APD 300 and extender APD 330. However, in some embodiments, at least two of processor 302, memory 304, and radio 306 may be combined as a unitary device. Likewise, in some embodiments, at least two of processor 332, memory 334, and radio 336 may be combined as a unitary device. Further, in some embodiments, at least one of processor 302, memory 304, and radio 306 may be implemented as a computer having non-transitory computer-readable media for carrying or having computer-executable instructions or data structures stored thereon.
  • processor 332, memory 334, and radio 336 may be implemented as a computer having non-transitory computer-readable media for carrying or having computer-executable instructions or data structures stored thereon.
  • non-transitory computer-readable recording medium refers to any computer program product, apparatus or device, such as a magnetic disk, optical disk, solid-state storage device, memory, programmable logic devices (PLDs) , DRAM, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired computer-readable program code in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • PLDs programmable logic devices
  • Disk or disc includes compact disc (CD) , laser disc, optical disc, digital versatile disc (DVD) , floppy disk and Blu-ray disc. Combinations of the above are also included within the scope of computer-readable media.
  • CD compact disc
  • DVD digital versatile disc
  • floppy disk floppy disk
  • Blu-ray disc floppy disk
  • Combinations of the above are also included within the scope of computer-readable media.
  • the computer may properly view the connection as a computer-readable medium.
  • any such connection may be properly termed a computer-readable medium.
  • Combinations of the above should also be included within the scope of computer-readable media.
  • FIG. 3 illustrates a wireless mesh network with client devices 120 and 122 connected to SSIDs 110 and 112 through root APD 300.
  • a wireless mesh network with client devices 120 and 122 connected to extender APD 330 will now be discussed with reference to FIG. 4.
  • FIG. 4 illustrates a wireless mesh network with client devices 120 and 122 connected to SSIDs 110 and 112 through extender APD 330 in accordance with aspects of the present invention.
  • extender APD 330 establishes wireless network 109 with SSIDs 110 and 112. Extender APD 330 is connected to client device 120 through SSID 110 and to client device 122 through SSID 112.
  • FIGs. 3-4 illustrate a wireless mesh network where client devices 120 and 122 can connect to SSIDs 110 and 112 through root APD 300 or extender APD 330. Aspects of data communications between root APD 300, extender APD 330, and client devices 120 and 122 will now be discussed with reference to FIGs. 5-10C.
  • FIG. 5 illustrates VLAN data frame 500 in accordance with aspects of the present invention.
  • VLAN data frame 500 consists of header 502, VLAN tag 504, payload 506, and FCS 508.
  • VLAN data frame 500 is formatted as an Ethernet data frame.
  • Header 502 includes a preamble, source device address, and destination device address.
  • VLAN tag 504 includes VLAN tag data.
  • Payload 506 includes higher-level network protocol information and data content.
  • FCS 508 contains frame check sequence information that allows detection of corrupted data in VLAN data frame 500.
  • FIG. 5 illustrates the structure of VLAN data frame 500.
  • the relation between VLAN tag data and SSIDs will now be discussed with reference to FIG. 6.
  • FIG. 6 illustrates data structure 310 in accordance with aspects of the present invention.
  • data structure 310 includes a plurality of VLAN tag data and SSIDs.
  • VLAN tag data 602 is uniquely paired with SSID 612
  • VLAN tag data 604 is uniquely paired with SSID 614.
  • data structure 310 is stored in memory 304 and memory 334.
  • data structure 310 may be dynamically altered by processor 302 or processor 332 to respond to changes in the operating environment.
  • data structure 310 is pre-configured and loaded into memories 304 and 334 when root APD 300 and extender APD 330 are initialized.
  • VLAN data frame 500 and data structure 310 containing VLAN tag data and SSIDs are illustrated in FIGs. 5-6. Aspects of data frame communication between root APD 300, extender APD 330, and client devices 120 and 122 will now be discussed with reference to FIGs. 7A-10C.
  • FIGs. 7A-B illustrate data frames 700 and 702 flowing to client devices 120 and 122 connected to root APD 300 on SSIDs 110 and 112 in accordance with aspects of the present invention.
  • client device 120 is connected to root APD 300 over wireless network 109 on SSID 110.
  • Client device 122 is connected to root APD 300 over wireless network 109 on SSID 112.
  • Data frames 700 and 702 are received by root APD 300 from network device 108.
  • the destination of data frame 700 is client device 120 and the destination of data frame 702 is client device 122.
  • Data frames 700 and 702 are of the same format as VLAN data frame 500.
  • VLAN tag 504 initially is empty or contains null information.
  • root APD 300 examines data frames 700 and 702 and determines that their destinations are client device 120 and 122, respectively. Root APD 300 recognizes that client device 110 is connected through wireless network 109 on SSID 110 and that client device 112 is connected through wireless network 109 on SSID 112.
  • data frame 700 is communicated to client device 120 on SSID 110 and data frame 702 is communicated to client device 122 on SSID 112.
  • FIGs. 7A-B illustrate client devices 120 and 122 connected to root APD 300.
  • Client devices 120 and 122 connecting to extender APD 330 will now be discussed with reference to FIGs. 8A-C.
  • FIGs. 8A-C illustrate data frames 700 and 702 flowing to client devices 120 and 122 connected to extender APD 330 on SSIDs 110 and 112 in accordance with aspects of the present invention.
  • client device 120 is connected to extender APD 330 over wireless network 109 on SSID 110.
  • Client device 122 is connected to extender APD 330 over wireless network 109 on SSID 112.
  • Data frames 700 and 702 are received by root APD 300 from network device 108.
  • the destination of data frame 700 is client device 120 and the destination of data frame 702 is client device 122.
  • root APD 300 determines that client device 120 is connected to SSID 110 and that client device 122 is connected to SSID 112. Root APD 300 updates data structure 310 so that VLAN tag data 800 is associated with SSID 110 and VLAN tag data 802 is associated with SSID 112. Data structure 310 is communicated to extender APD 330.
  • extender APD 330 determines that client device 120 is connected to SSID 110 and that client device 122 is connected to SSID 112. Extender APD 330 updates data structure 310 so that VLAN tag data 800 is associated with SSID 110 and VLAN tag data 802 is associated with SSID 112. Data structure 310 is communicated to root APD 330.
  • root APD 300 examines data frames 700 and 702 and determines that their destinations are client device 120 and 122, respectively.
  • root APD 300 attaches data frame 700 with VLAN tag data 800 and data frame 702 with VLAN tag data 802. Data frames 700 and 702 and VLAN tag data 800 and 802 are communicated over backhaul 116 to extender APD 330.
  • extender APD 330 uses data structure 310 to determine that VLAN tag data 800 corresponds to SSID 110 and that VLAN tag data 802 corresponds to SSID 112. Extender APD 330 removes VLAN tag data 800 and 802 from data frames 700 and 702, respectively. Extender APD 330 then communicates data frame 700 on SSID 110 to client device 120 and data frame 702 on SSID 112 to client device 122.
  • FIGs. 8A-C illustrate the communication of data frames 700 and 702 to client devices 120 and 122 connected to extender APD 330 on separate SSIDs 110 and 112. Communication of data frames to client devices connected to the same SSID on separate APDs will now be discussed with reference to FIGs. 9A-D.
  • FIGs. 9A-D illustrate data frames 700 and 702 flowing to client devices 120 and 122 connected to the root APD 300 and extender APD 330 in accordance with aspects of the present invention.
  • client device 120 is connected to root APD 300 over wireless network 109 on SSID 110.
  • Client device 122 is connected to extender APD 330 over wireless network 109 on SSID 110.
  • Data frames 700 and 702 are received by root APD 300 from network device 108.
  • the destination of data frame 700 is client device 120 and the destination of data frame 702 is client device 122.
  • client devices 120 and 122 are both connected on SSID 110, which is associated with VLAN tag data 800.
  • root APD 300 communicates both VLAN tag data 800 attached to data frame 700 and VLAN tag data 800 attached to data frame 702 over backhaul 116 to extender APD 330.
  • only VLAN tag data 800 attached to data frame 702 is communicated over backhaul 116.
  • extender APD 330 uses data structure 310 to determine that VLAN tag data 800 corresponds to SSID 110. Extender APD 330 removes VLAN tag data 800 from data frames 700 and 702. Extender APD 330 then communicates data frames 700 and 702 on SSID 110.
  • both data frames 700 and 702 are communicated on SSID 110 by both root APD 300 and extender APD 330.
  • root APD 300 only communicates data frame 700 on SSID 110
  • extender APD 330 only communicates data frame 702 on SSID 110.
  • client device 120 accepts data frame 700 and client device 122 accepts data frame 702.
  • client device 120 examines destination device address in header 502 or network protocol information in payload 506 to determine whether client device 120 is the correct destination for data frame 700. In this manner, client device 120 accepts data frame 700 and ignores data frame 702. In a similar manner, client device 122 accepts data frame 702 and ignores data frame 700.
  • FIGs. 7A-9D illustrate the communication of data frames 700 and 702 from network device 108 to client devices 120 and 122 connected to SSIDs 110 or 112. Communication of data frames from client device 122 to client device 120 or to network device 108 will now be discussed with reference to FIGs. 10A-C.
  • FIGs. 10A-C illustrate data frames 1000 and 1002 flowing from client device 122 connected to extender APD 330 in accordance with aspects of the present invention.
  • client device 120 is connected to root APD 300 over wireless network 109 on SSID 110.
  • Client device 122 is connected to extender APD 330 over wireless network 109 on SSID 110.
  • Data frames 1000 and 1002 are received by extender APD 330 from client device 122.
  • the destination of data frame 1000 is client device 120 and the destination of data frame 1002 is external network 114.
  • client devices 120 and 122 are both connected on SSID 110, which is associated with VLAN tag data 800.
  • extender APD 330 communicates VLAN tag data 800 attached to data frame 1000 and VLAN tag data 800 attached to data frame 1002 over backhaul 116 to root APD 300.
  • root APD 300 removes VLAN tag data 800 from data frames 1000 and 1002.
  • root APD 300 communicates data frame 1000 to client device 120 over wireless network 109 on SSID 110 and communicates data frame 1002 to external network 114 through network device 108.
  • root APD 300 first communicates data frame 1000 to network device 108.
  • Network device 108 determines that the destination of data frame 1000 is client device 120 and sends data frame 1000 back through root APD 300, which then communicates data frame 1000 on wireless network 109 on SSID 110 to client device 120.
  • FIGs. 7A-10C illustrate data frames being communicated among root APD 300, extender APD 330, and client devices 120 and 122 in various scenarios.
  • a method of operating root APD 300 and extender APD 330 will now be discussed with reference to FIG. 11.
  • FIG. 11 illustrates method 1100 of generating and storing a data structure that associates VLAN tag data with SSIDs in accordance with aspects of the present invention.
  • method 1100 starts (S1102) and a wireless mesh network is established (S1104) .
  • S1104 a wireless mesh network is established.
  • root APD 300 and extender APD 330 are powered on, and wireless network 109 is established.
  • a data structure containing VLAN tag data associated with SSIDs is initialized (S1106) .
  • processor 302 creates data structure 310 in memory 304.
  • data structure 310 includes VLAN tag data 602 and 604, and SSIDs 612 and 614.
  • SSID 612 may be a “Private” network name and SSID 614 may be a “Guest” network name.
  • the data structure is synchronized across all APDs in the wireless network (S1108) .
  • root APD 300 communicates with extender APD 330 such that identical copies of data structure 310 appear in both memory 304 and memory 334.
  • SSIDs which may include adding, deleting, or renaming SSIDs (S1110) .
  • S1110 SSIDs
  • a user renames “Private” SSID to “Family” SSID.
  • the user renames the SSID using client device 120 which is connected to extender APD 330.
  • the data structure is updated with the updated SSID and its associated VLAN tag data (S1112) .
  • processor 332 detects the changes to SSIDs and updates data structure 310 accordingly.
  • the data structure is synchronized across all APDs in the wireless network (S1108) .
  • extender APD 330 communicates with root APD 300 such that identical copies of data structure 310 appear in both memory 334 and memory 304.
  • method 1100 stops (S1116) .
  • FIG. 11 illustrates method 1100 of initializing and updating the data structure. Methods of communicating data frames between APDs and client devices over the wireless network on multiple SSIDs will now be discussed with reference to FIGs. 12-13.
  • FIG. 12 illustrates method 1200 of communicating data frames to the root APD, the backhaul, the extender APD, then the SSID in accordance with aspects of the present invention.
  • method 1200 starts (S1202) and the data frame is received by the root APD (S1204) .
  • data frame 700 is communicated from network device 108 to root APD 300.
  • the target client device of the data frame is identified (S1206) .
  • processor 302 determines that the destination of data frame 700 is client device 120.
  • the SSID for the target client device is identified (S1208) .
  • processor 302 determines that client device 120 is connected to extender APD 330 on SSID 110.
  • the SSID is matched to its associated VLAN tag data (S1210) .
  • processor 302 examines data structure 310 and finds that VLAN tag data 800 is associated with SSID 110.
  • VLAN tag data is attached to the data frame (S1212) and the data frame is transmitted over the backhaul (S1214) .
  • VLAN tag data 800 attached to data frame 700 are communicated from root APD 300 to extender APD 330 over backhaul 116.
  • the data frame is received by the extender APD (S1216) and the VLAN tag data is matched to the associated SSID (S1218) .
  • extender APD 330 receives VLAN tag data 800 attached to data frame 700.
  • Processor 332 examines data structure 310 and finds that SSID 110 is associated with VLAN tag data 800.
  • VLAN tag data is removed from the data frame (S1220) and the data frame is communicated on the correct SSID (S1222) .
  • processor 332 removes VLAN tag data 800 from data frame 700, then communicates data frame 700 over wireless network 109 on SSID 110.
  • the data frame is received by the client device (S1224) .
  • client device For example, referring to FIG. 8C, data frame 700 is received by client device 120.
  • method 1200 stops (S1226) .
  • FIG. 13 illustrates method 1300 of communicating data frames to the SSID, the extender APD, the backhaul, then the root APD in accordance with aspects of the present invention.
  • method 1300 starts (S1302) and the data frame is received by the extender APD (S1304) .
  • client device 122 communicates data frame 1002 over wireless network 109 on SSID 110.
  • Data frame 1002 is received by extender APD 330.
  • the destination of data frame 1002 is external network 114.
  • the SSID used by the client device is identified (S1306) and the associated VLAN tag data is identified (S1308) .
  • processor 332 examines data structure 310 and finds that VLAN tag data 800 is associated with SSID 110.
  • VLAN tag data 800 attached to data frame 1002 are communicated from extender APD 330 to root APD 300 over backhaul 116.
  • the data frame is received by the root APD (S1314) .
  • the VLAN tag data is removed (S1316) and the data frame is communicated to its destination (S1318) .
  • VLAN tag data 800 attached to data frame 1002 are received by root APD 300.
  • Processor 302 removes VLAN tag data 800 then communicates data frame 1002 to network device 108.
  • Network device 108 then communicates data frame 1002 to external network 114.
  • method 1300 stops (S1320) .
  • wireless communications methods such as Wi-Fi are commonly used to allow client devices such as computers and smartphones to connect to networks.
  • Simple Wi-Fi configurations consisting of a single Wi-Fi base station offer coverage only within a limited area.
  • Wireless mesh networks comprising a root APD and one or more extender APDs can increase coverage area and allow flexible network topologies.
  • conventional wireless mesh networks cannot support multiple SSIDs on extender APDs.
  • the invention presents a system and method of enabling multiple SSIDs among network APDs that are connected over a backhaul.
  • Data frames communicated over the backhaul are tagged with VLAN tag data that are associated with specific SSIDs.
  • Network APDs determine the correct SSID associated with the VLAN tag data, and remove the VLAN tag data before communicating the data frames over SSIDs or to external networks.
  • the operations disclosed herein may constitute algorithms that can be effected by software, applications (apps, or mobile apps) , or computer programs.
  • the software, applications, or computer programs can be stored on a non-transitory computer-readable medium for causing a computer, such as the one or more processors, to execute the operations described herein and shown in the drawing figures.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un dispositif de point d'accès racine qui est connecté à un dispositif de point d'accès d'extension sur une liaison terrestre et peut établir un premier SSID et un second SSID. Le point d'accès racine maintient l'identification du premier SSID sur des premières trames de données à communiquer par l'intermédiaire de la liaison terrestre pour le premier SSID en ajoutant des premières données de marqueur VLAN au marqueur VLAN de chacune des premières trames de données; communique les premières trames de données comportant les premières données de marqueur VLAN dans le marqueur VLAN de chacune des premières trames de données communiquées sur la liaison terrestre; maintient l'identification du second SSID sur des secondes trames de données en ajoutant les secondes données de marqueur VLAN au marqueur VLAN de chacune des secondes trames de données; communique les secondes trames de données comportant les secondes données de marqueur VLAN dans le marqueur VLAN de chacune des secondes trames de données communiquées sur la liaison de retour.
PCT/CN2020/107473 2020-08-06 2020-08-06 Solution ssid multiple dans un réseau maillé wi-fi WO2022027466A1 (fr)

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Citations (4)

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US20190116482A1 (en) * 2017-03-29 2019-04-18 Cisco Technology, Inc. Wireless network roaming in high-speed movement applications
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