[특허]Method and system for uplink communication

Method and system for uplink communication 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04B-001/00 H04L-027/06
출원번호	US-0755229 (2010-04-06)
등록번호	US-8160122 (2012-04-17)
발명자 / 주소	Sinsuan, Kenneth C. Myers, Theodore J. Cohen, Lewis N. Hughes, Matthew Werner, Daniel Thomas Boesel, Robert W. Singler, Patrick M.
출원인 / 주소	On-Ramp Wireless, Inc.
대리인 / 주소	Foley & Lardner LLP
인용정보	피인용 횟수 : 0 인용 특허 : 42

초록 ▼

A method for conserving bandwidth in a communication system includes spreading a data frame using a first pseudo-noise (PN) spreader. A broadcast frame is spread using a second PN spreader. A complex data stream having a first component and a second component is generated. The data frame is assigned to the first component and the broadcast frame is assigned to the second component. The complex data stream is transmitted to a tag.

대표청구항 ▼

1. A method for modulating a signal in a communication system, the method comprising: spreading a data frame with a pseudorandom noise code at a transmitter to a spreading factor;generating a data stream comprising a first component, wherein the data frame is assigned to the first component;transmitting the data stream at a time wherein the time is determined in part from a start slot time plus a random chip delay while a second transmitter transmits at a second time a second data stream comprising a second data frame spread with the pseudorandom noise code to a second spreading factor wherein the second time is determined in part from the start slot time such that both the data stream and the second data stream are received. 2. The method of claim 1, wherein the data stream is transmitted at a power level such that the data stream is received at a predetermined power level. 3. The method of claim 2, wherein the power level is determined in part from a measured power level resulting from a measurement of a previously received transmission. 4. The method of claim 1, further comprising attempting to receive an acknowledgement message at a receiver for a period of time after transmitting the data stream; and transmitting the data stream again if the acknowledgement message is not received within the period of time. 5. The method of claim 4, wherein the acknowledgement message is spread using a second pseudorandom noise code. 6. The method of claim 1, wherein the time is determined in part from a measurement of a previously received transmission. 7. The method of claim 1, wherein the spreading factor is based at least in part on a quality of a previously received transmission. 8. The method of claim 7, wherein the spreading factor is reduced if the quality of the previously received transmission satisfies a quality threshold such that a transmission time is minimized. 9. The method of claim 1, wherein the data stream is transmitted on a frequency that is determined in part from a measurement of a previously received transmission. 10. A node comprising: a processor configured to spread a data frame with a pseudorandom noise code to a spreading factor;generate a data stream comprising a first component, wherein the data frame is assigned to the first component; anda transmitter operatively coupled to the processor and configured to transmit the data stream at a time wherein the time is determined in part from a start slot time plus a random chip delay while a second transmitter transmits at a second time a second data stream comprising a second data frame spread with the pseudorandom noise code to a second spreading factor wherein the second time is determined in part from the start slot time such that both the data stream and the second data stream are received. 11. The node of claim 10, wherein the data stream is transmitted at a power level such that the data stream is received at a predetermined power level. 12. The node of claim 10, wherein the spreading factor is based at least in part on a quality of a previously received transmission. 13. The node of claim 12, wherein the spreading factor is reduced if the quality of the previously received transmission satisfies a quality threshold such that a transmission time is minimized. 14. The node of claim 10, wherein the data stream is transmitted on a frequency that is determined in part from a measurement of a previously received transmission. 15. The node of claim 10, wherein the time is determined in part from a measurement of a previously received transmission. 16. A computer-readable medium having computer-readable instructions stored thereon that, if executed by an access point, cause the access point to: spread a data frame with a pseudorandom noise code to a spreading factor;generate a data stream comprising a first component, wherein the data frame is assigned to the first component; andtransmit the data stream at a time wherein the time is determined in part from a start slot time plus a random chip delay while a second transmitter transmits a second data stream at a second time comprising a second data frame spread with the pseudorandom noise code to a second spreading factor wherein the second time is determined in part from the start slot time such that both the data stream and the second data stream are received. 17. The computer readable medium of claim 16, wherein the data stream is transmitted at a power level such that the data stream is received at a predetermined power level. 18. The computer readable medium of claim 16, wherein the spreading factor is based at least in part on a quality of a previously received transmission. 19. The computer readable medium of claim 18, further comprising using a reduced spreading factor if the quality of the previously received transmission satisfies a quality threshold such that a transmission time is minimized. 20. The computer readable medium of claim 16, wherein the data stream is transmitted on a frequency that is determined in part from a measurement of a previously received transmission.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Method and system for uplink communication 원문보기

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Method and system for uplink communication 원문보기

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