IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0246363
(2002-09-18)
|
등록번호 |
US-7269151
(2007-09-11)
|
발명자
/ 주소 |
- Diener,Neil R.
- Miller,Karl A.
|
출원인 / 주소 |
|
대리인 / 주소 |
Edell, Shapiro & Finnan, LLC
|
인용정보 |
피인용 횟수 :
95 인용 특허 :
49 |
초록
▼
A system and method for managing the spectrum utilization of a frequency band that is shared, both in frequency and time, by multiple devices. At one or more devices operating in the frequency band, pulses associated with signals occurring in the frequency band are detected by sampling part or all
A system and method for managing the spectrum utilization of a frequency band that is shared, both in frequency and time, by multiple devices. At one or more devices operating in the frequency band, pulses associated with signals occurring in the frequency band are detected by sampling part or all the frequency band for a time interval. From the detected signal pulses, the signals can be classified. In addition, overall spectrum activity can be measured. Using classification information for signals detected in the frequency band, policies can be executed so that a device may take certain actions in order to avoid interfering with other signals, or to optimize simultaneous use of the frequency band with the other signals. Signal detection occurs at one or more devices operating in a frequency band. Signal classification and measurement, as well as policy execution may occur within a processor of the same device where signal detection occurs, or in another device (located remotely or within the operating region of the frequency band).
대표청구항
▼
What is claimed is: 1. A method for managing usage of a radio frequency band that is shared by multiple devices, comprising: a. monitoring activity in the frequency band at a device operating in the frequency band to generate spectrum activity information for the frequency band; b. processing the s
What is claimed is: 1. A method for managing usage of a radio frequency band that is shared by multiple devices, comprising: a. monitoring activity in the frequency band at a device operating in the frequency band to generate spectrum activity information for the frequency band; b. processing the spectrum activity information received from the device to generate spectrum management information, wherein processing comprises by executing one or more spectrum policies to determine what actions, if any, should be taken by one or more devices operating in the frequency band, including one or more of actions selected from the group consisting of: frequency channel assignment, transmission data rate, packet fragment size, packet transmit scheduling to avoid interfering with other signals, and transmit power; and c. controlling usage of the frequency band by one or more devices operating in the frequency band using the spectrum management information. 2. The method of claim 1, wherein monitoring comprises sampling substantially all the frequency band using a wideband radio transceiver in the device to obtain activity in the frequency band. 3. The method of claim 2, wherein monitoring activity comprises generating spectral-based and time-based information pertaining to activity in the frequency band. 4. The method of claim 1, wherein processing is performed by a device located remote from the device where activity in the frequency band is monitored. 5. The method of claim 1, wherein controlling comprises generating control signals for controlling one or more operating parameters of devices operating in the frequency band, including: frequency channel assignment, transmission data rate, packet fragment size, packet transmit scheduling to avoid interfering with other signals, and transmit power. 6. The method of claim 1, wherein monitoring activity in the frequency band comprises obtaining spectrum analysis information for the frequency band. 7. The method of claim 6, wherein processing information comprises accumulating spectrum analysis information for intervals of time. 8. The method of claim 1, wherein processing spectrum activity information comprises classifying or identifying devices operating in the frequency band. 9. The method of claim 1, wherein executing spectrum policies further comprises fragmenting a packet to be transmitted before a next interference period determined to occur. 10. A method for managing usage of a radio frequency band that is shared by multiple devices, comprising: a. monitoring activity in the frequency band at a device operating in the frequency band to generate spectrum activity information for the frequency band; b. processing the spectrum activity information received from the device to generate spectrum management information, wherein processing comprises executing one or more spectrum policies to determine what actions, if any, should be taken by one or more devices operating in the frequency band, wherein executing spectrum policies comprises executing a spectrum policy that assigns priority to certain types of signals over others based on the time of day or locations of devices; and c. controlling usage of the frequency band by one or more devices operating in the frequency band using the spectrum management information. 11. A method for managing usage of a radio frequency band that is shared by multiple devices, comprising: a. monitoring activity in the frequency band at a device operating in the frequency band to generate spectrum activity information for the frequency band; b. processing the spectrum activity information received from the device to generate spectrum management information, wherein processing comprises executing one or more spectrum policies to determine what actions, if any, should be taken by one or more devices operating in the frequency band, wherein executing spectrum policies comprises executing a spectrum policy that is based on regulatory specific policies governing the use by devices of the frequency band; and c. controlling usage of the frequency band by one or more devices operating in the frequency band using the spectrum management information. 12. A method for managing usage of a radio frequency band that is shared by multiple devices, comprising: a. monitoring activity in the frequency band at a device operating in the frequency band to generate spectrum activity information for the frequency band; b. processing the spectrum activity information received from the device to generate spectrum management information, wherein processing comprises executing one or more spectrum policies to determine what actions, if any, should be taken by one or more devices operating in the frequency band, wherein executing comprises executing a spectrum policy that assigns a higher level of priority of usage of the frequency band to one or more signals over other signals; and c. controlling usage of the frequency band by one or more devices operating in the frequency band using the spectrum management information. 13. The method of claim 12, wherein executing comprises executing a spectrum policy that assigns higher priority to a radar signal in a 5 GHz radio frequency band over other signals in that radio frequency band. 14. A method for managing usage of a radio frequency band that is shared by multiple devices, comprising: a. monitoring activity in the frequency band at a device operating in the frequency band to generate spectrum activity information for the frequency band, b. processing the spectrum activity information received from the device to generate spectrum management information, wherein processing comprises executing one or more spectrum policies to determine what actions, if any, should be taken by one or more devices operating in the frequency band, wherein executing spectrum policies comprises executing a spectrum policy that maximizes a transmit data rate of a device given presence of any other signals in the frequency band; and c. controlling usage of the frequency band by one or more devices operating in the frequency band using the spectrum management information. 15. The method of claim 14, wherein executing the spectrum policy comprises limiting a transmit data rate if there is a frequency hopping signal also occurring in the frequency band. 16. In a device that operates in a radio frequency band that is shared by multiple devices, a method comprising: a. monitoring activity in the frequency band; b. classifying signals detected in the frequency band from the information representing activity in the frequency band; and c. controlling operation of the device based on the type of signals occurring in the frequency band according to spectrum policies; d. storing in the device information describing the spectrum policies; and e. downloading information describing updated or new spectrum policies to the device from another device for storage in said device. 17. The method of claim 16, wherein monitoring comprises: a. receiving energy across substantially the entire radio frequency band; and b. generating information from the received energy representing activity in the frequency band. 18. The method of claim 16, and further comprising reporting signal classification information to another device that processes the signal classification information according to spectrum policies. 19. A system for managing spectrum usage by one or more devices in a radio frequency band, comprising: a. a radio receiver capable of receiving energy across substantially the entire radio frequency band; b. a spectrum analysis device coupled to the radio receiver that generates information describing activity in the frequency band based on signals output by the radio receiver; c. a processor coupled to the spectrum analysis device that processes the information output by the spectrum analysis device to classify signals detected in the radio frequency band; and d. a memory that stores information related to spectrum policies that govern usage of the frequency band; e. wherein the processor generates signals to control operation of one or more devices in the frequency based on the signals determined to occur in the frequency band and according to the information stored in the memory related to the spectrum policies. 20. The device of claim 19, and further comprising a memory that stores a database of signal classification reference data, wherein the processor compares information output by the spectrum analysis device with the signal classification data to classify a signal. 21. The system of claim 20, wherein the memory stores updated or new signal classification reference data downloaded from another device. 22. A method for accumulating statistics associated with activity in a radio frequency band shared by a plurality of devices, comprising: a. detecting activity in the frequency band during time intervals; b. generating data representing activity during time intervals in the frequency band; and c. accumulating the data over the time intervals to build statistics of activity in each of a plurality of frequency bins in the frequency band, wherein accumulating comprises accumulating for each frequency bin statistics including one or more selected from the group consisting of: signal pulse duty cycle, maximum signal power, average signal power, network type and network traffic conditions and activity. 23. The method of claim 22, wherein receiving data comprises receiving output from a spectrum analyzer in a device that receives signals in the frequency band. 24. The method of claim 22, wherein detecting activity in the frequency band comprises operating a radio receiver in a wideband mode so as to receive energy in substantially the entire frequency band during time intervals. 25. The method of claim 22, wherein accumulating comprises accumulating statistics associated with signal pulses detected in the frequency band, including one or more statistics selected from the group consisting of: number of signal pulses concurrent in the frequency band, signal pulse center frequency, signal pulse bandwidth, signal pulse duration, time between signal pulses and signal pulse power. 26. The method of claim 22, and further comprising displaying the data.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.