| 摘要 |
<p>A cellular communications system making use of wideband digital transceivers and fixed-to-mobile frequency assignments to provide to determine an optimum active base station within a group of base stations. Each base station transceiver can receive and transmit on each one of the N channel frequencies assigned to the service provider. As a result, the system can allow the mobile units to maintain the same frequency from cell to cell whenever possible. To perform diversity combining, each base station uses a single receive antenna to provide a receive signal strength indication, or RSSI, for each of the channel frequencies available to the service provider, and then reports the list of RSSIs for each channel to a central base station controller. The base station controller can then determine which base station is receiving the signal from a remote mobile unit with the greatest received signal power by simply comparing the relative magnitudes of the RSSIs. The central controller than assigns the base station having the strongest received signal strength to service the mobile unit. The invention not only minimizes the required amount of hand-off processing but also reduces the number of antennas needed to provide diversity reception to one per cell.</p> |
