Multi-hop intelligent relaying method and apparatus for use in a frequency division duplexing based wireless access network
View Patent ↗A multi-hop relaying method and apparatus used in a cellular network. The multi-hop transmission scheme utilizes intelligent relays within a conventional cellular system having at least one base station, one or more intelligent relays, and user equipment elements. The method includes selecting the strongest pilot signal from among the base stations and intelligent relays, reporting such to the base station, distributing an active user list to the relays along with scheduling and routing information via a relay control channel, and transmitting data according to a respective active user based upon the pilot signal strength to maximize coverage and capacity over the cellular system.
1. A method of multi-hop relaying within a cellular network having at least one base station, more than one intelligent relays and at least one user equipment element, said method comprising:
selecting a pilot signal emanating from one of said base station or said more than one intelligent relays based upon strength of said pilot signal at said at least one user equipment element;
reporting a strongest source of said pilot signal to said base station;
distributing an active user list, scheduling information, and routing information among said more than one intelligent relays such that said at least one user equipment element is assigned to a corresponding one of said more than one intelligent relays;
transmitting data from said at least one base station to said more than one intelligent relays;
detecting an address of said at least one user equipment corresponding to said data transmitted from said at least one base station; and
forwarding said data to said at least one user equipment.
2. The method as claimed in claim 1 wherein said distributing step is performed via a relay control channel.
3. The method as claimed in claim 2 wherein said detecting step is performed at said more than one intelligent relays.
4. The method as claimed in claim 1 wherein said base station includes a means for power control in coordination with rate control wherein said power control means provides for minimization of interference between base station transmissions and relay transmissions.