SYSTEM AND METHOD FOR COORDINATING HUB-BEAM SELECTION IN FIXED WIRELESS BACKHAUL NETWORKS

摘要

Systems and methods are disclosed for coordinating hub-beam selection in wireless backhaul networks and optionally, for joint hub-beam selection and slot assignment. Data indicative of path loss is measured or estimated for each of a set of RBMs and for each hub-beam of a respective multi-beam serving hub. A performance metric is computed, and hub-beam selection is made based on optimizing the performance metric across the set of RBMs. A serving hub may use reserved frames to train an RBM on each hub-beam and communicate beam selections, e.g. based on minimizing path loss on a per-cell or per-sector basis, or maximizing a sum-utility function for improved performance over a neighborhood of the network. A beam assignment map may be shared amongst serving hubs. A weight table of good and bad beam combinations may be generated to evaluate the cost of a hub-beam combination, for joint hub-beam selection and slot assignment.

主权项

1. A method of coordinating hub-beam selection in a wireless backhaul network, the network comprising a plurality of sites wherein each site comprises a plurality of hub modules having multi-beam antenna, and each hub module serves a plurality [cluster] of remote backhaul modules (RBMs), the method comprising:
obtaining for each of a set of RBMs in at least part of the wireless backhaul network (neighborhood), data indicative of path loss for hub-RBM radio links for each hub-beam of a respective serving hub; from the data indicative of path loss computing a performance metric for the hub-RBM radio links for each hub-beam; and selecting a hub-beam for each of the set of hub-RBM links that optimizes said performance metric across the set of RBMs of the neighborhood; for each RBM of the neighborhood, communicating to its serving hub the respective hub-beam identification.