Modular wireless network access device
View Patent ↗In view of the above, a wireless network access device is provided. In an example implementation, the wireless network access device includes a radio interface having a plurality of individually addressable radio paths for providing a connection to corresponding radio modules. Each radio module includes a radio configured to communicate with client devices in a corresponding coverage area. Each radio module is configured to operate independently of the other radio modules. A network interface is included to provide data network access. The wireless network access device includes a processor to manage communication between the client devices that communicate with the radio modules and a data network via the radio interface and the network interface when the wireless local area network device includes at least one connected radio module.
1. A wireless network access device comprising:
a radio interface comprising a plurality of individually addressable radio paths for providing a connection to corresponding radio modules of a plurality of radio modules;
each radio module comprising a radio configured to communicate with client devices in a corresponding coverage area, where each radio module operates independently of the other radio modules;
a network interface configured to provide data network access; and
a central processor configured to manage communication between the client devices that communicate with the radio modules and a data network via the radio interface and the network interface when the wireless network access device includes at least one connected radio module, where the plurality of individually addressable radio paths form multiple point-to-point connections between the central processor and the plurality of radio modules;
where the multiple point-to-point connections include:
a plurality of radio interface paths between the central processor and a switch; and
a single radio interface path between the switch and at least one fanout device, with each fanout device comprising a plurality of radio paths to a corresponding set of the radio modules, where the central processor forms individual connections over the plurality of radio paths via control of the switch to select one of the plurality of radio interface paths between the central processor and the switch, and control of the at least one fanout device to select the radio path to a desired radio module.
2. The wireless network access device of claim 1 where:
when more than one radio module is connected to the radio interface, each radio module is configured to operate in accordance with any one of a variety of wireless communication characteristics.
3. The wireless network access device of claim 2 where the wireless communication characteristics include any combination of the following types of characteristics: different antenna configurations, different antenna types, different component suppliers, different transmit power capabilities, and different radio frequency (“RF”) technologies.
4. The wireless network access device of claim 2 where the radio interface operates in accordance with the Peripheral Component Interconnect Express (“PCIe”) bus standard.
5. The wireless network access device of claim 1 where the radio modules include antennas having an antenna configuration selected from a group consisting of:
Single In, Single Out (“SISO”);
Multiple In, Multiple Out (“MIMO”); and
n×m MIMO, where n and m indicate a number of receiving and transmitting spatial streams.
6. The wireless network access device of claim 1 where the radio modules include either directionalized or omni-directional antennas or both.
7. The wireless network access device of claim 1 where the radio modules employ an RF technology selected from the group consisting of:
WiFi operating under any suitable standard including IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.11ac, and IEEE 802.11ad;
mobile telecommunications operating under any suitable standard;
wireless personal area network communications operating under any suitable standard including Bluetooth®.
8. The wireless network access device of claim 1 where the plurality of radio interface paths between the central processor and the switch, the single radio interface path between the switch and the at least one fanout device, and the plurality of radio paths between the at least one fanout device and each corresponding radio module each includes at least one lane formed with at least one receiving line and at least one transmitting line.
9. The wireless network access device of claim 8 where the at least one receiving line and the at least one transmitting line each include a differential pair connection.
10. The wireless network access device of claim 1 where the at least one radio interface path between the central processor and the fanout device, and the radio paths to each radio module each includes at least one lane formed with at least one receiving line and at least one transmitting line.
11. The wireless network access device of claim 10 where the at least one receiving line and the at least one transmitting line each include a differential pair connection.
12. The wireless network access device of claim 1 where each individual radio path includes a connector for insertion and removal of a corresponding radio module.
13. The wireless network access device of claim 12 where the connectors are arranged in a substantially circular pattern.
14. The wireless network access device of claim 12 where the connectors are provided to permit insertion of from one to a maximum number of radio modules, the wireless network access device being configurable by populating the wireless network access device with a selected number and type of radio modules.
15. The wireless network access device of claim 14 where the wireless network access device is configurable to provide scalable wireless performance when combinations of radio modules are inserted according to predetermined performance characteristics.
16. The wireless network access device of claim 15 where the predetermined performance characteristics are based on one or more of the following:
number of MIMO antennas;
number of MIMO spatial streams; and
maximum connection rate.
17. The wireless network access device of claim 1 where:
the central processor, the radio interface, and the network interface reside on a wireless network access controller; and
each of the individually addressable radio paths connects to a corresponding connector configured to receive any one of the plurality of radio modules.
18. The wireless network access device of claim 17 where each of the plurality of radio modules includes a radio board connector configured to connect to any of the connectors on the wireless network access controller, and a radio printed circuit board comprising a shape that is same for all radio printed circuit boards of the plurality of radio modules, the shape of the radio printed circuit board and the configuration of the radio board connectors defining a form factor for radio modules to adhere to for operation with the wireless network access controller.
19. A method for configuring a wireless network access device comprising a wireless network access device controller, a network interface, and a radio interface comprising a plurality of individually addressable radio paths for providing a connection to corresponding radio modules, the method comprising:
selecting at least one radio module from among a group of different types of radio modules, where each of the different types of radio modules have been inserted into a selected connector corresponding to an individually addressable radio path; and
managing communications between client devices communicating over wireless connections with the selected radio modules and a data network via the network interface by establishing a communication path along an individually addressable radio path corresponding to a selected radio module,
where establishing the communication path includes:
controlling a switch to select one of at least one radio interface path between the central processor and the switch; and
controlling a fanout device comprising a plurality of radio paths to a corresponding set of the radio modules to select one of the plurality of radio paths to a selected radio module.
20. The method of claim 19 where the step of selecting the at least one radio module includes the step of selecting radio modules according to any of the following characteristics:
different antenna configurations,
different antenna types,
different component suppliers,
different transmit power capabilities, and
different radio frequency (“RF”) technologies.
21. The method of claim 19 where the step of selecting the at least one radio module includes the step of selecting radio modules according to antennas on the radio modules having an antenna configuration selected from a group consisting of:
Single In, Single Out (“SISO”);
Multiple In, Multiple Out (“MIMO”); and
n×m MIMO, where n and m indicate a number of receiving and transmitting spatial streams.
22. The method of claim 19 where the step of selecting the at least one radio module includes the step of selecting radio modules that include either directionalized or omni-directional antennas or both.
23. The method of claim 19 where the step of selecting the at least one radio module includes the step of selecting radio modules from radio modules that operate according to a RF technology selected from a group consisting of:
WiFi operating under any suitable standard including IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.11ac, and IEEE 802.11ad;
mobile telecommunications operating under any suitable standard;
wireless personal area network communications operating under any suitable standard including Bluetooth®.
24. The method of claim 19 where the step of selecting the at least one radio module includes selecting the radio modules according to predetermined performance characteristics.
25. The method of claim 24 where the step of selecting the radio modules according to predetermined performance characteristics includes selecting the predetermined performance characteristics based on one or more of the following:
number of MIMO antennas;
number of MIMO spatial streams; and
maximum connection rate.