최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | UP-0792464 (2004-03-03) |
등록번호 | US-7756086 (2010-08-02) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 71 인용 특허 : 524 |
The present invention is generally directed to methods for communicating in a dual-mode communication protocol. A representative embodiment of the present invention comprises: enabling communication in a spread-spectrum communication protocol, comprising: receiving a first portion of a communication
The present invention is generally directed to methods for communicating in a dual-mode communication protocol. A representative embodiment of the present invention comprises: enabling communication in a spread-spectrum communication protocol, comprising: receiving a first portion of a communication frame at a first frequency channel, wherein the first portion of the communication frame comprises a data channel index that indicates a second frequency channel for receiving a second portion of the communication frame; switching to the second frequency channel; and receiving the second portion of the communication frame at the second frequency channel.
What is claimed is: 1. A method of communicating with a multi-mode communication protocol in a given frequency band composed of a plurality of channels, wherein a first set of the plurality of channels are designated fixed-frequency channels and a second set of the plurality of channels are designa
What is claimed is: 1. A method of communicating with a multi-mode communication protocol in a given frequency band composed of a plurality of channels, wherein a first set of the plurality of channels are designated fixed-frequency channels and a second set of the plurality of channels are designated spread-spectrum channels, the spread-spectrum channels being composed of a first subset of acquisition channels and a second subset of data channels, the acquisition channels separated by data channels, the method comprising: enabling communication in a spread-spectrum communication mode; attempting to receive a communication packet by traversing through the subset of acquisition channels; upon receiving a communication packet, switching to a data channel designated by the communication packet; and receiving and verifying a data portion of the communication packet by communicating in the designated data channel; upon not receiving a communication packet after traversing through the subset of acquisition channels, enabling communication in a fixed-frequency communication mode; attempting to receive a communication packet by traversing through the designated fixed-frequency channels and searching for a training sequence in the preamble of the communication packet; and upon receiving a communication packet, receiving and verifying a data portion of the communication packet by maintaining communication in the current fixed-frequency channel. 2. The method of claim 1, wherein enabling communication in a spread-spectrum communication mode comprises: setting a current modulation protocol to a frequency shift keying (FSK) protocol. 3. The method of claim 1, wherein enabling communication in a fixed-frequency communication mode comprises: setting a current modulation protocol to an on-off keying (OOK) protocol. 4. A method for communicating in a dual-mode communication protocol, the method comprising: enabling communication in a spread-spectrum communication protocol, comprising: receiving a first portion of a communication frame at a first frequency channel, wherein the first portion of the communication frame comprises a data channel index that indicates a second frequency channel for receiving a second portion of the communication frame; wherein the first frequency channel is one of a subset of acquisition channels, and the second frequency channel is one of a subset of data channels, wherein the acquisition and data channels are subsets of channels designated for spread-spectrum communication, and wherein the spread-spectrum communication protocol further comprises: cycling through the subset of acquisition channels until synchronizing with a transmitter, whereupon the channel at which synchronization occurs is the first frequency channel; receiving a predefined synchronization pattern, wherein the predefined synchronization pattern is found within a training sequence field of the first portion of the communication frame; switching to the second frequency channel; receiving the second portion of the communication frame at the second frequency channel; upon not synchronizing with a transmitter, enabling communication in a fixed-frequency communication protocol, wherein the fixed-frequency communication protocol comprises: receiving the entire communication frame at a third frequency channel, wherein the third frequency channel is one of a subset of fixed-frequency channels. 5. The method of claim 4, wherein enabling communication in a fixed-frequency communication protocol comprises enabling communication in a first modulation scheme, and wherein enabling communication in a spread-spectrum communication protocol comprises enabling communication in a second modulation scheme. 6. The method of claim 5, wherein the first modulation scheme is the same as the second modulation scheme. 7. The method of claim 5, wherein the first modulation scheme is an amplitude modulation scheme. 8. The method of claim 7, wherein the amplitude modulation scheme is an on-off keying (OOK) modulation scheme. 9. The method of claim 5, wherein the second modulation scheme is a frequency modulation scheme. 10. The method of claim 9, wherein the frequency modulation scheme is a frequency shift keying (FSK) modulation scheme. 11. A method for communicating data, the method comprising: enabling communication in a spread-spectrum communication protocol, the spread spectrum communication protocol comprising: transmitting a first portion of a communication frame at a first frequency channel, wherein the preamble of the first portion of the communication frame comprises a data channel index that indicates a second frequency channel for communicating a second portion of the communication frame; determining whether to communicate in the spread-spectrum communication protocol or a fixed-frequency communication protocol; examining a receiver address field of the communication frame to determine whether an intended receiver communicates in the spread-spectrum communication protocol or the fixed-frequency communication protocol; upon communicating the communication frame, receiving an acknowledgement response from the intended receiver; updating the receiver address field of the intended receiver; switching to the second frequency channel; transmitting the second portion of the communication frame at the second frequency channel; upon determining to communicate in the fixed-frequency communication protocol, enabling communication in the fixed-frequency communication protocol, wherein the fixed-frequency communication protocol comprises transmitting the first and second portions of the communication frame in a third frequency channel. 12. The method of claim 11, wherein the first frequency channel is one of a subset of acquisition channels, and the second frequency channel is one of a subset of data channels, wherein the acquisition and data channels are subsets of a first set of channels designated for spread-spectrum communication, and wherein the third frequency channel is one of a second set of channels designated for fixed-frequency communication. 13. The method of claim 11, wherein enabling communication in a fixed-frequency communication protocol comprises enabling communication in a first modulation scheme, and wherein enabling communication in a spread-spectrum communication protocol comprises enabling communication in a second modulation scheme. 14. The method of claim 13, wherein the first modulation scheme is the same as the second modulation scheme. 15. The method of claim 13, wherein the first modulation scheme is an amplitude modulation scheme. 16. The method of claim 15, wherein the amplitude modulation scheme is an on-off keying (OOK) modulation scheme. 17. The method of claim 13, wherein the second modulation scheme is a frequency modulation scheme. 18. The method of claim 17, wherein the frequency modulation scheme is a frequency shift keying (FSK) modulation scheme. 19. The method of claim 13, wherein enabling communication in the fixed-frequency communication protocol further comprises: enabling communication in a relatively low-power transmission mode. 20. The method of claim 13, wherein enabling communication in the spread-spectrum communication protocol further comprises: enabling communication in a relatively high-power transmission mode. 21. A dual-mode transceiver, comprising: means for communicating in a spread-spectrum communication protocol, said means comprising: means for receiving in the spread-spectrum communication protocol, comprising: means for receiving at a first frequency channel a first portion of a communication frame that comprises a data channel index that indicates a second frequency channel for receiving a second portion of the communication frame; wherein the first frequency channel is one of a subset of acquisition channels, and the second frequency channel is one of a subset of data channels, wherein the acquisition and data channels are subsets of channels designated for spread-spectrum communication, and wherein said means for receiving in the spread-spectrum communication protocol further comprises: means for cycling through the subset of acquisition channels; means for synchronizing with a transmitter, whereupon the acquisition channel at which synchronization occurs is the first frequency channel; means for receiving a predefined synchronization pattern, wherein the predefined synchronization pattern is found within a training sequence field of the first portion of the communication frame; means for switching to the second frequency channel designated by the data channel index; means for receiving the second portion of the communication frame at the second frequency channel; means for switching from receiving in the spread-spectrum communication protocol to receiving in the fixed-frequency communication protocol upon not synchronizing with a transmitter in the spread-spectrum communication protocol; means for communicating in a fixed-frequency communication protocol, comprising: means for receiving in the fixed-frequency communication protocol, comprising: means for receiving the entire communication frame at a third frequency channel, wherein the third frequency channel is one of a subset of fixed-frequency channels. 22. The transceiver of claim 21, wherein said means for communicating in the spread-spectrum communication protocol further comprises: means for transmitting in the spread-spectrum communication protocol, comprising: means for transmitting a first portion of a communication frame at a first frequency channel, wherein the first portion of the communication frame comprises a data channel index that indicates a second frequency channel for communicating a second portion of the communication frame; means for switching to the second frequency channel; and means for transmitting the second portion of the communication frame at the second frequency channel. 23. The transceiver of claim 22, further comprising: means for communicating in a fixed-frequency communication protocol, comprising: means for transmitting in the fixed-frequency communication protocol, comprising: means for transmitting the first and second portions of the communication frame in a third frequency channel. 24. The transceiver of claim 23, wherein said means for transmitting in the spread-spectrum communication protocol further comprises means for transmitting at a first radiating-power level, and wherein said means for transmitting in the fixed-frequency communication protocol further comprises means for communicating at a second radiating-power level. 25. The transceiver of claim 24, wherein the first radiating-power level is higher then the second radiating-power level. 26. The transceiver of claim 24, wherein the second radiating-power level is a substantially low power level. 27. The transceiver of claim 23, further comprising: means for determining whether to transmit in the spread-spectrum communication protocol or the fixed-frequency communication protocol. 28. The transceiver of claim 24, wherein said means for determining comprises: means for examining a receiver address field of the communication frame to determine whether an intended receiver communicates in the spread-spectrum communication protocol or the fixed-frequency communication protocol. 29. The transceiver of claim 25, further comprising: means for receiving an acknowledgement response from the intended receiver; and means for updating the receiver address field of the intended receiver. 30. The transceiver of claim 21, wherein said means for communicating in the fixed-frequency communication protocol further comprises means for communicating in a first modulation scheme, and wherein said means for communicating in the spread-spectrum communication protocol comprises means for communicating in a second modulation scheme. 31. The transceiver of claim 30, wherein the first modulation scheme is the same as the second modulation scheme. 32. The transceiver of claim 30, wherein the first modulation scheme is an amplitude modulation scheme. 33. The transceiver of claim 32, wherein the amplitude modulation scheme is an on-off keying (OOK) modulation scheme. 34. The transceiver of claim 30, wherein the second modulation scheme is a frequency modulation scheme. 35. The transceiver of claim 34, wherein the frequency modulation scheme is a frequency shift keying (FSK) modulation scheme.
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