WiFi remote displays
A wireless peripheral mode is provided by a host system that communicates to a WiFi infrastructure and, utilizing the same WiFi RF subsystem, also communicates to peripherals. The host system may employ additional RF channels for communicating with high bandwidth peripherals, such as display devices, where high levels of QoS may be managed locally. The host system may be a conventional desktop computer system, a notebook computer system, a multi-media access point, a cell phone, a game machine, a portable game machine, a Personal Digital Assistant (PDA), a smart phone or any other type of device that benefits from accessing both a WiFi infrastructure and local peripherals.
1. A method of operating a WiFi system including at least one wireless peripheral device that can communicate without authentication on a WiFi RF channel, comprising:
configuring a host computing system having a single WiFi network controller both as an infrastructure mode WiFi client to maintain connectivity with a wireless WiFi network and as other than an infrastructure mode WiFi client to communicate with said at least one wireless peripheral device;
operating said host computing system in infrastructure mode on said WiFi RF channel to maintain connectivity with said wireless WiFi network and to arbitrate access to said WiFi RF channel, and neither in infrastructure mode nor in standard ad hoc mode on said WiFi RF channel to communicate with said at least one wireless peripheral device; and
operating said at least one wireless peripheral device on said WiFi RF channel to communicate with said host computing system.
2. The method of claim 1 utilizing a layer 2 communication scheme based on a MAC address of said at least one wireless peripheral device for communication between said host computing system and said wireless peripheral device.
3. The method of claim 1 wherein said host computing system utilizes common RF, baseband and MAC subsystems for communicating with both the wireless WiFi network and the wireless peripheral device.
4. The method of claim 1 further comprising
entering, during an authentication phase, a specific code into one of said wireless peripheral devices;
using, by said wireless peripheral device, said WiFi RF channel to communicate said code to said host computing system, without using either a standard WiFi ad hoc protocol or an access point or another channel; and
validating, by said host computing system, said wireless peripheral device upon receipt of said code.
5. The method of claim 4 , further comprising enabling the validated wireless peripheral device to operate independently of the host computing system on the wireless WiFi network.
6. A method of operating a WiFi based host computing system to support one or more WiFi wireless peripheral devices each of which is capable of running a complete WiFi protocol stack, comprising:
connecting said WiFi based host computing system, as an infrastructure device, over a WiFi RF channel to a WiFi RF LAN network;
connecting said WiFi based host computing system over the same, or an overlapping, WiFi RF channel to said WiFi wireless peripheral devices;
providing, by said host computing system, software, including setup procedures and security procedures, for said WiFi wireless peripheral devices; and
operating said host computing system, in infrastructure mode to maintain connectivity to said network and to arbitrate access to said WiFi RF channel, and neither in infrastructure mode nor in standard ad hoc mode to support said WiFi wireless peripheral devices.
7. The method of claim 6 further including displaying, by one or more of said wireless peripheral devices, updated display frames.
8. The method of claim 6 wherein the host computing system utilizes one active RF subsystem using one RF channel for communicating both with said WiFi RF LAN network and with said one or more WiFi wireless peripheral devices.
9. The method of claim 6 further including activating a switch on one of said WiFi wireless peripheral devices to initiate said setup procedures and to run a setup program on said host computing system without using ad hoc mode.
10. The method of claim 6 further including entering a code into said host computing system as part of said security procedure to validate an intended WiFi wireless peripheral device without using ad hoc mode or an access point.
11. The method of claim 6 utilizing a layer 2 communication scheme based on a MAC address of the wireless peripheral devices for communication between the WiFi based host computing system and the wireless peripheral devices.