Systems and methods for frequency and bandwidth optimization with a single-wire multiswitch device
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04B-001/40
H04B-001/00
H04H-040/90
H04L-007/033
H04H-020/63
출원번호
US-0820496
(2017-11-22)
등록번호
US-10153790
(2018-12-11)
발명자
/ 주소
Shah, Kushan
Mui, Benjamin
출원인 / 주소
The DIRECTV Group, Inc.
대리인 / 주소
Guntin & Gust, PLC
인용정보
피인용 횟수 :
0인용 특허 :
11
초록▼
This disclosure relates to a devices and methods related to satellite information broadcasting. Example embodiments may include frequency shifting an intermediate frequency (IF) signal down-conversion from the microwave-band. As an example, down-conversion involving local oscillators may lead to fre
This disclosure relates to a devices and methods related to satellite information broadcasting. Example embodiments may include frequency shifting an intermediate frequency (IF) signal down-conversion from the microwave-band. As an example, down-conversion involving local oscillators may lead to frequency drift due to varying temperature and/or humidity conditions. Correcting for the frequency drift may provide an opportunity to remove or filter excess bandwidth. Further embodiments may include receiving, in a tuning request, information about a transponder type. A frequency translation module may be adjusted based, at least in part, on the transponder type related to the IF signal being input into the frequency translation module. Such frequency-shifting and transponder-specific filtering may allow Single-Wire Multiswitch (SWM) devices to provide output signals with narrower bandwidth, which may improve signal quality, cable run length, reduce power demands, etc.
대표청구항▼
1. A single-wire multiswitch (SWM) device, comprising: a processing system including a controller and a digital signal processor (DSP); anda memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations comprising: determining an interm
1. A single-wire multiswitch (SWM) device, comprising: a processing system including a controller and a digital signal processor (DSP); anda memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations comprising: determining an intermediate center frequency of an intermediate frequency (IF) signal provided by a low noise block (LNB) down converter coupled to the SWM;determining a frequency drift based on a comparison between the intermediate center frequency and an expected intermediate center frequency;frequency shifting the IF signal based on the frequency drift; andallocating a plurality of channel bandwidths to a corresponding plurality of frequency translation devices. 2. The SWM device of claim 1, wherein the LNB comprises a dielectric resonator oscillator (DRO) that provides a local oscillator tone to convert a signal comprising a first carrier frequency to the IF signal. 3. The SWM device of claim 1, wherein the LNB comprises a phase-locked loop (PLL) that provides a local oscillator tone to convert a signal comprising a first carrier frequency to the IF signal. 4. The SWM device of claim 1, wherein the determining of the intermediate center frequency of the IF signal further comprises accessing an intermediate center frequency look-up table, wherein the intermediate center frequency look-up table comprises an entry comprising the expected intermediate center frequency. 5. The SWM device of claim 1, wherein the operations further comprise: transmitting a tuning query via a bi-directional communication link, wherein the SWM device comprises a frequency translator including a frequency translation device;receiving a tuning request from a client device via the bi-directional communication link, wherein the tuning request comprises a requested transponder signal and an expected bandwidth of the requested transponder signal;causing a multiswitch of the SWM device to connect the IF signal to the frequency translator based on the tuning request;causing the frequency translator to convert to the requested transponder signal to an SWM channel; andadjusting a bandwidth of the SWM channel based on the expected bandwidth of the requested transponder signal, wherein the expected bandwidth of the requested transponder signal is less than a bandwidth of the IF signal. 6. The SWM device of claim 5, wherein the requested transponder signal comprises one of a type provided by a Ku-band transponder and wherein the expected bandwidth of the requested transponder signal is between 22 MHz and 26 MHz. 7. The SWM device of claim 5, wherein the requested transponder signal comprises one of a type provided by a Ka-band type transponder and wherein the expected bandwidth of the requested transponder signal is between 34 MHz and 38 MHz. 8. A method comprising: determining, by a processing system of a single-wire multiswitch (SWM) device that includes a controller and a DSP, an intermediate center frequency of an intermediate frequency (IF) signal, wherein the SWM device is communicatively coupled to a low-noise block down-converter (LNB);determining, by the processing system, a frequency drift based on a comparison between the intermediate center frequency and an expected intermediate center frequency;facilitating by the processing system, a frequency shift of the IF signal based on the frequency drift; andfacilitating, by the processing system, allocation of a plurality of channel bandwidths to a corresponding plurality of frequency translation devices, based at least on a bandwidth of the IF signal and an operating bandwidth of a client device. 9. The method of claim 8, wherein the LNB comprises a dielectric resonator oscillator (DRO) that provides a local oscillator tone to convert a signal comprising a first carrier frequency to the IF signal. 10. The method of claim 8, wherein the LNB comprises a phase-locked loop (PLL) that provides a local oscillator tone to convert a signal comprising a first carrier frequency to the IF signal. 11. The method of claim 8, wherein the determining of the intermediate center frequency comprises using an intermediate center frequency look-up table, wherein the intermediate center frequency look-up table comprises an entry comprising the expected intermediate center frequency. 12. The method of claim 8, further comprising: facilitating, by the processing system, transmission of a tuning query via a bi-directional communication link, wherein the SWM device comprises a frequency translator that includes a frequency translation device;detecting, by the processing system, a tuning request received from a client device via the bi-directional communication link, wherein the tuning request comprises a requested transponder signal and an expected bandwidth of the requested transponder signal;facilitating, by the processing system, operation of a multiswitch of the SWM device to connect the IF signal to the frequency translator based on the tuning request;facilitating, by the processing system, operation of the frequency translator to convert to the requested transponder signal to a SWM channel; andadjusting, by the processing system, a bandwidth of the SWM channel based on the expected bandwidth of the requested transponder signal, wherein the expected bandwidth of the requested transponder signal is less than the IF signal bandwidth. 13. The method of claim 12, wherein the requested transponder signal comprises one of a type provided by a Ku-band transponder and wherein the expected bandwidth of the requested transponder signal is between 22 MHz and 26 MHz. 14. The method of claim 12, wherein the requested transponder signal comprises one of a type provided by a Ka-band type transponder and wherein the expected bandwidth of the requested transponder signal is between 34 MHz and 38 MHz. 15. A non-transitory machine-readable storage medium, comprising executable instructions that, when executed by a processing system of a single-wire multiswitch (SWM) device including a processor, facilitate performance of operations, comprising: receiving an intermediate frequency (IF) signal obtained from a low-noise block down-converter (LNB);determining an intermediate center frequency of the IF signal;comparing the intermediate center frequency and an expected intermediate center frequency to determine a frequency drift;frequency shifting the IF signal based on the frequency drift; andallocating a plurality of channel bandwidths to a corresponding plurality of frequency translation devices, based at least on a bandwidth of the IF signal and an operating bandwidth of a client device. 16. The non-transitory machine-readable storage medium of claim 15, wherein the LNB comprises a dielectric resonator oscillator (DRO) that provides a local oscillator tone to convert a signal comprising a first carrier frequency to the IF signal. 17. The non-transitory machine-readable storage medium of claim 15, wherein the LNB comprises a phase-locked loop (PLL) that provides a local oscillator tone to convert a signal comprising a first carrier frequency to the IF signal. 18. The non-transitory machine-readable storage medium of claim 15, wherein the SWM device comprises an intermediate center frequency look-up table, wherein the intermediate center frequency look-up table comprises an entry comprising the expected intermediate center frequency. 19. The non-transitory machine-readable storage medium of claim 15, wherein the operations further comprise: transmitting a tuning query via a bi-directional communication link, wherein the SWM device comprises a frequency translator including a frequency translation device;receiving, by the SWM device, a tuning request from a client device via the bi-directional communication link, wherein the tuning request comprises a requested transponder signal and an expected bandwidth of the requested transponder signal;facilitating operation of a multiswitch of the SWM device to connect the IF signal to the frequency translator based on the tuning request;facilitating operation of the frequency translator to convert to the requested transponder signal to a SWM channel; andadjusting a bandwidth of the SWM channel based on the expected bandwidth of the requested transponder signal, wherein the expected bandwidth of the requested transponder signal is less than the IF signal bandwidth. 20. The non-transitory machine-readable storage medium of claim 19, wherein the requested transponder signal comprises one of a type provided by a Ku-band transponder and wherein the expected bandwidth of the requested transponder signal is between 22 MHz and 26 MHz.
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이 특허에 인용된 특허 (11)
Huff, William J.; Malone, Lawrence J., Automatic frequency correction apparatus and method of operation.
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