Receiver and method for the reception of a node by a receiver in a wireless network
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04L-027/06
H04B-017/00
H04B-001/7073
H04L-007/04
H04W-004/00
H04W-024/00
H04B-017/318
출원번호
US-0257473
(2014-04-21)
등록번호
US-9246605
(2016-01-26)
우선권정보
DE-10 2010 034 521 (2010-08-16)
발명자
/ 주소
Ferchland, Tilo
Jaehne, Rolf
Poegel, Frank
Sachse, Eric
출원인 / 주소
Atmel Corporation
대리인 / 주소
Fish & Richardson P.C.
인용정보
피인용 횟수 :
0인용 특허 :
8
초록▼
In one embodiment, a method includes receiving a radio frequency (RF) signal; synchronizing the received RF signal with a preamble to determine a time base; determining a first energy value of the received RF signal by averaging received signal strength indication (RSSI) values of the received RF si
In one embodiment, a method includes receiving a radio frequency (RF) signal; synchronizing the received RF signal with a preamble to determine a time base; determining a first energy value of the received RF signal by averaging received signal strength indication (RSSI) values of the received RF signal over a first period of time; determining a second energy value of the received RF signal over a second period of time; determining a difference value between the first energy value and the second energy value; comparing the difference value with a predetermined energy threshold value; determining a quality value of the received RF signal; comparing the quality value of the received RF signal with a predetermined quality threshold value; and, if the difference value exceeds the predetermined energy threshold value or the quality value is below the predetermined quality threshold value, then erasing the time base.
대표청구항▼
1. A method comprising, at a receiver: receiving a signal with an antenna;conducting synchronization of the signal to determine a first time base, the first time base defining a first temporal period for data detection;determining a particular value associated with the signal in the first temporal p
1. A method comprising, at a receiver: receiving a signal with an antenna;conducting synchronization of the signal to determine a first time base, the first time base defining a first temporal period for data detection;determining a particular value associated with the signal in the first temporal period; andrenewing synchronization of the signal based on a comparison between the particular value and a predetermined threshold value to determine a second time base, the second time base defining a second temporal period for data detection. 2. The method of claim 1, further comprising: determining a first energy value of the received signal by averaging received signal strength indication (RSSI) values of the received signal over a first period of time;determining a second energy value of the signal by averaging RSSI values of the received signal over a second period of time;determining a difference value between the first energy value and the second energy value exceeds a predetermined energy threshold value; andrenewing synchronization to determine the second time base in response to the difference value exceeding the predetermined energy threshold value. 3. The method of claim 2, wherein the difference value is determined by subtracting the first energy value from the second energy value. 4. The method of claim 2, wherein the energy threshold value is determined by using previous values for the first and second energy values of the received signal. 5. The method of claim 1, further comprising: determining a quality value of the signal by correlating binary chips in the signal with chips of a sequence;determining that the quality value of the signal is below a predetermined quality threshold value; andrenewing synchronization to determine the second time base in response to the quality value being below the predetermined quality threshold value. 6. The method of claim 5, wherein the quality threshold value is determined using previous valued for the quality value of the signal. 7. The method of claim 1, wherein the first temporal period includes a plurality of periods of time, and the method further comprising: for each of the plurality of periods of time, determining a respective value associated with the signal in the period of time. 8. The method of claim 1, wherein conducting synchronization of the signal to determine a first time base comprises: performing a cross-correlation between the received signal and a preamble on the receiver side; anddetermining symbol boundaries and sampling instances of binary chips for the first time base based on a maximum of the cross-correlation. 9. The method of claim 1, wherein the particular value comprises a difference value between a first energy value and a second energy value, and the predetermined threshold valued comprises a predetermined energy threshold value, and wherein renewing synchronization of the signal comprises renewing synchronization of the signal based on a determination of the difference value exceeding the predetermined energy threshold value. 10. The method of claim 1, wherein the particular value comprises a quality value, and the predetermined threshold value comprises a predetermined quality threshold value, and wherein renewing synchronization of the signal comprises renewing synchronization of the signal based on a determination of the quality value being below the predetermined quality threshold value. 11. A device comprising: an antenna configured to receive a signal; anda receiver coupled to the antenna, the receiver being operable to: conduct a first synchronization of the signal to determine a first time base, the first time base defining a first temporal period for data detection;determine a particular value associated with the signal in the first temporal period; andrenew synchronization of the signal based on a comparison between the particular value and a predetermined threshold value to determine a second time base, the second time base defining a second temporal period for data detection. 12. The device of claim 11, wherein the receiver is further operable to: determine a first energy value of the received signal by averaging received signal strength indication (RSSI) values of the received signal over a first period of time;determine a second energy value of the received second signal by averaging RSSI values of the received signal over a second period of time;determine a difference value between the first energy value and the second energy value exceeds a predetermined energy threshold value; andrenew synchronization to determine the second time base in response to the difference value exceeding the predetermined energy threshold value. 13. The device of claim 12, wherein the difference value is determined by subtracting the first energy value from the second energy value. 14. The device of claim 12, wherein the energy threshold value is determined by using previous values for the first and second energy values of the signal. 15. The device of claim 11, wherein the receiver is further operable to: determine a quality of the signal by correlating binary chips in the signal with chips of a sequence;determine that the quality value of the signal is below a predetermined quality threshold value; andrenew synchronization to determine the second time base in response to the quality value being below the predetermined quality threshold value. 16. The device of claim 15, wherein the quality threshold value is determined using previous values for the quality value of the signal. 17. One or more computer-readable non-transitory storage media embodying logic that is configured when executed to: conduct a first synchronization of the signal to determine a first time base, the first time base defining a first temporal period for data detection;determine a particular value associated with the signal in the first temporal period; andrenew synchronization of the signal based on a comparison between the particular value and a predetermined threshold value to determine a second time base, the second time base defining a second temporal period for data detection. 18. The computer-readable non-transitory storage media of claim 17, further comprising logic configured when executed to: determine a first energy value of the received signal by averaging received signal strength indication (RSSI) values of the received signal over a first period of time;determine a second energy value of the received second signal by averaging RSSI values of the received signal over a second period time;determine a difference value between the first energy value and the second energy value exceeds a predetermined energy threshold value; andrenew synchronization to determine the second time base in response to the difference value exceeding the predetermined energy threshold value. 19. The computer-readable non-transitory storage media of claim 18, wherein the difference value is determined by subtracting the first energy value from the second energy value. 20. The computer-readable non-transitory storage media of claim 18, wherein the energy threshold value is determined by using previous values for the first and second energy values of the signal. 21. The computer-readable non-transitory storage media of claim 17, further comprising logic configured when executed: determine a quality value of the signal by correlating binary chips in the signal with chips of a sequence;determine that the quality value of the signal is below a predetermined quality threshold value; andrenew synchronization to determine the second time base in response to the quality value being below the predetermine quality threshold value. 22. The computer-readable non-transitory storage media of claim 21, wherein the quality threshold value is determined using previous values for the quality value of the signal.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (8)
Lee, Won-Ho, Apparatus and method for searching a base station in an asynchronous mobile communications system.
Ryan,Philip J.; Adams,Andrew R.; O'Sullivan,John D.; Parker,Uri; Hart,Brian; Zyner,Grzegorz B., Automatic gain control and low power start-of-packet detection for a wireless LAN receiver.
Tsunehara, Katsuhiko; Doi, Nobukazu; Kuwahara, Mikio; Ishifuji, Tomoaki, Method for measuring distance and position using spread spectrum signal, and an equipment using the method.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.