Methods and apparatus for monitoring contested spectrum and/or responding to the detection of an incumbent user
A base station, e.g., a CBSD, selects or more user equipment (UE) devices, e.g., cell phones, to operate in monitoring mode. In monitoring mode the UE device, in addition to its normal communications with the base station, performs received power measurements in a frequency band, e.g., a CBRS band. The UE reports to the base station information indicating a UE determined measured power level attributed to incumbent user or measurement information used to derive a power level attributed to incumbent user. One or more base stations report received power measurement values attributed to incumbent user to a system management device, e.g., a SAS. The system management device processes the received information, e.g. combining information, and comparing a result to a threshold level. If the result exceeds the threshold the system management device sends a command to one or more base station to shut down DL traffic in the CBRS band.
1. A method, the method comprising:
selecting, at a first base station that uses a first frequency band for communication, one or more user equipment (UE) devices to operate as power measurement devices, said one or more UE devices including a first UE device, said step of selecting one or more UE devices including selecting multiple UE devices to operate as received signal power monitoring devices;
receiving, at the first base station, first received power measurement information from the first UE device, said first received power measurement information being based on a total received power in the first frequency band measured by the first UE device; and
communicating to a system management device received signal power information, said received signal power information being based on at least said first received power measurement information.
2. The method of claim 1 , wherein selecting multiple UE devices includes selecting devices at different locations to operate as received signal power monitoring devices.
3. The method of claim 2 , wherein the first received power measurement information includes signal energy information indicating a first total received signal energy in the first frequency band.
4. The method of claim 2 , wherein the first received power measurement information includes signal energy information indicating a first total received signal energy in the first frequency band reduced by an amount of signal energy of Citizens Broadband Radio Service Device (CBSD) signals.
5. The method of claim 1 , wherein communicating to the system management device received signal power information includes:
communicating a received power generated by said first base station from received power information provided by two or more different UE devices.
6. The method of claim 5 , further comprising:
operating the system management device to make a decision whether or not to shut down first base station downlink operation based on the received signal power information provided by the first base station.
7. The method of claim 1 , further comprising:
operating the first UE device to receive a signal indicating that the first UE device is to operate in a monitoring mode of operation in which signal measurements are performed.
8. The method of claim 7 , wherein said signal indicating that the first UE device is to operate in said monitoring mode of operation includes information indicating a duration that the first UE device is to remain in the monitoring mode of operation.
9. The method of claim 8 , wherein said signal indicating that the first UE device is to operate in said monitoring mode of operation includes information indicates one of: i) a frequency that the first UE device is to perform measurements or ii) a frequency that the first UE device is to send measurement reports to the first base station.
10. The method of claim 8 , further comprising:
operating the first UE device to transition into the monitoring mode of operation in response to said received signal indicating that the first UE device is to operate in said monitoring mode of operation.
11. The method of claim 10 , further comprising:
operating the first UE device to measure received power in said first frequency band;
operating the first UE device to generate a report to communicate first received power information; and
operating the first UE device to send the generated report communicating first received power information to the first base station.
12. A communications system comprising:
a first base station that uses a first frequency band for communication, said first base station including:
a first processor; and
a first wireless receiver; and
wherein said first processor is configured to:
select, one or more user equipment (UE) devices to operate as power measurement devices, said one or more UE devices including a first UE device;
operate the first base station to receive, via the first wireless receiver, first received power measurement information from the first UE device, said first received power measurement information being based on a total received power in the first frequency band measured by the first UE device; and
operate the first base station to communicate to a system management device, received signal power information, said received signal power information being based on at least said first received power measurement information.
13. The communications system of claim 12 , wherein said first processor is configured to:
select multiple UE devices to operate as received signal power monitoring devices, as part of being configured to select one or more UE devices.
14. The communications system of claim 13 , wherein said first processor is configured to: select devices at different locations to operate as received signal power monitoring devices, as part of being configured to select multiple UE devices.
15. The communications system of claim 14 , wherein the first received power measurement information includes signal energy information indicating a first total received signal energy in the first frequency band.
16. The communications system of claim 14 , wherein the first received power measurement information includes signal energy information indicating a first total received signal energy in the first frequency band reduced by an amount of signal energy of Citizens Broadband Radio Service Device (CBSD) signals.
17. The communications system of claim 13 , wherein said first processor is configured to:
operate the first base station to communicate a received power generated by said first base station from received power information provided by two or more different UE devices, as part of being configured to operate the first base station to communicate to the system management device received signal power information.
18. The communications system of claim 17 , further comprising:
said system management device including:
a second processor; and
wherein said second processor is configured to:
operate the system management device to make a decision whether or not to shut down first base station downlink operation based on the received signal power information provided by the first base station.
19. A non-transitory computer readable medium including a first set of computer executable instructions which when executed by a processor of a first base station cause the first base station to perform the steps of:
selecting, at the first base station that uses a first frequency band, one or more user equipment (UE) devices to operate as power measurement devices, said one or more UE devices including a first UE device;
receiving, at the first base station, first received power measurement information from the first UE device, said first received power measurement information being based on a total received power in the first frequency band measured by the first UE device; and
communicating to a system management device received signal power information, said received signal power information being based on at least said first received power measurement information.