MESH WITH NODES HAVING MULTIPLE ANTENNAS
An architecture and protocol stack for matrix mesh wireless networks, where one or more nodes ( 102 ) and/or clients in the network have more than one antenna ( 208 ). One or more frequency bands and support devices with different communication protocols can be utilized. Matrix channel characteristics are used to establish parameters for each matrix channel in the matrix mesh network.
1 . A method comprising:
providing knowledge of one or more matrix channels in a matrix mesh network;
recording matrix-channel characteristics of the matrix channels;
establishing parameters of a communication link using the matrix-channel characteristics.
2 . The method of claim 1 further comprising self-configuring when stations enter or leave the matrix mesh network.
3 . The method of claim 1 further comprising adapting to changes in channel characteristics selected from the group consisting of gain, interference, and noise.
4 . A method comprising:
providing characteristics of matrix channels in a matrix mesh network;
estimating end-to-end performance associated with source-destination pairs in the matrix mesh network;
setting matrix communication protocols for each matrix channel in the matrix mesh network using the estimated end-to-end performance;
sending data from a source to a destination along the end-to-end routes for each source-destination pair using the matrix communication protocols.
5 . The method of claim 4 further comprising combining signals via transmit diversity.
6 . The method of claim 4 further comprising combining signals via receive diversity.
7 . The method of claim 4 further comprising using each of multiple antennas at a matrix node for different spatial channels.
8 . The method of claim 4 further comprising routing over multiple degrees of freedom.
9 . The method of claim 4 further comprising selecting one of multiple frequencies and an associated matrix channel of the matrix channels.
10 . The method of claim 4 further comprising prioritizing data, wherein setting the matrix communication protocols includes using the prioritization.
11 . The method of claim 4 further comprising calculating a cost function for use in setting the matrix communication protocols.
12 . The method of claim 4 further comprising using a heuristic to set matrix communication protocols.
13 . The method of claim 4 further comprising beamsteering with multiple antennas.
14 . The method of claim 4 further comprising probing for neighbors.
15 . The method of claim 4 further comprising sequentially probing on all antennas and operating frequencies in search of neighbors.
16 . The method of claim 4 further comprising probing in parallel on all antennas and operating frequencies in search of neighbors.
17 . The method of claim 4 further comprising receiving beacon frames from neighbors.
18 . A system comprising:
a matrix mesh element including:
a plurality of antennas;
a radio coupled to the plurality of antennas;
a matrix mesh neighbor discovery engine, coupled to the radio, embodied in a computer-readable medium;
a matrix channel database, coupled to the matrix mesh neighbor discovery engine,
wherein, in operation, the matrix mesh neighbor discovery engine uses the radio to acquire knowledge of a one or more matrix channels, associated with the plurality of antennas, between the matrix mesh element and a station and stores the matrix-channel characteristics of the one or more matrix channels in the matrix channel database.
19 . The system of claim 18 further comprising a matrix mesh routing engine embodied in a computer-readable medium, wherein, in operation, the matrix mesh routing engine sets matrix communication protocols for the one or more matrix channels.
20 . The system of claim 18 , wherein the matrix mesh element is a first matrix mesh element, further comprising the station, wherein the station is a second matrix mesh element.
21 . The system of claim 18 , further comprising the station, wherein the station is a wireless client.
22 . The system of claim 18 , further comprising a backbone network of matrix mesh elements, including the matrix mesh element.
23 . The system of claim 18 , further comprising a solar cell coupled to the matrix mesh element, wherein, in operation, the matrix mesh element receives power from the solar cell.
24 . The system of claim 18 , further comprising a plug configured to fit into a power outlet, wherein, in operation, the matrix mesh element receives power from a power source through the plug.
25 . The system of claim 18 , wherein the matrix mesh element is configured for use in an outdoor matrix mesh.