Cost efficient spectral-reuse transceiver
View Patent ↗An operational mechanism enables frequency re-use techniques, including selective frequency hopping and channel aggregation, on very low-cost transceiver hardware.
1. On a network of frequency hopping spectral reuse transceivers, a method for creating a new frequency hopping sequence over which communications may be conducted by selecting sub-channels for communication comprising the steps of:
a. a base station transceiver analyzing the spectrum of potential sub-channels over which communications may be conducted wherein said analysis comprises the measurement of signal levels on said sub-channels to determine their suitability for conducting communications by detecting the presence and absence of interfering signals and the recordation of said measurements;
b. said base station transceiver compiling a sample spectrum of suitable potential sub-channels identified in step a;
c. said base station transceiver analyzing which sub-channels of the frequency hopping sequence currently in use have new interference;
d. said base station transceiver determining which sub-channels not currently in the frequency hopping sequence are interference free;
e. said base station transceiver constructing a new frequency hopping sequence by adding the sub-channels compiled in step b to those sub-channels in the current frequency hopping sequence that are interference free and subtracting those sub-channels identified in step c.
f. a remote transceiver analyzing the spectrum of potential sub-channels over which communications may be conducted;
g. said remote transceiver compiling an interference report identifying on which sub-channels the remote transceiver has detected interference;
h. said remote transceiver sending said interference report to the base transceiver;
i. said base station transceiver further filtering its new frequency hopping sequence by subtracting those sub-channels identified in said interference report.
2. The method of claim 1 wherein said spectrum analysis comprises the measurement of the received signal strength indicator for each potential sub-channel to determine whether said sub-channel is suitable for conducting communications.
3. The method of claim 2 wherein said base station transceiver compares the received signal strength indicators for each sub-channel to a selected threshold value for determining whether said sub-channel is suitable for conducting communications.
4. The method of claim 3 wherein said base station transceiver selects a new hopping sub-channel with the lowest received strength indicator value below a selected threshold value.
5. The method of claim 2 wherein said base station transceiver selects a new hopping sub-channel for conducting communications by selecting the candidate sub-channel with the lowest received signal strength indicator value.
6. The method of claim 1 wherein said base station transceiver excludes selection of a hopping sub-channel adjacent to the sub-channel currently in use when said base station transceiver constructs a new frequency hopping sequence.
7. The method of claim 1 wherein said base station transceiver excludes selection of a hopping sub-channel adjacent to the sub-channel currently in use when said base station transceiver and said remote transceiver are engaged in spectrum analysis.
8. The method of claim 1 wherein said base station transceiver is a full-duplex radio and wherein said base station transceiver selects a pair of sub-channels from the frequency hopping sequence over which to conduct communications.