Method and apparatus for regulating base station ACK/NAK message transmit power in a wireless communication system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04B-007/00
출원번호
US-0637226
(2003-08-07)
등록번호
US-7292873
(2007-11-06)
발명자
/ 주소
Wei,Yongbin
Chen,Tao
출원인 / 주소
Qualcomm Incorporated
인용정보
피인용 횟수 :
6인용 특허 :
15
초록▼
A base station (LBS) (110) in a wireless network (100) establishes power levels for transmitting messages acknowledging receipt of packet data from a mobile communications device (MAD) (114). In one implementation, the LBS infers whether the MAD received a given acknowledgement message by consideri
A base station (LBS) (110) in a wireless network (100) establishes power levels for transmitting messages acknowledging receipt of packet data from a mobile communications device (MAD) (114). In one implementation, the LBS infers whether the MAD received a given acknowledgement message by considering whether (306, 316) the next communication from the MAD comprises new packet data, and whether (310, 320) that data comprises re-transmitted data. The LBS adjusts (312, 314, 322, 324) transmit power level for future acknowledgement messages according to whether the MAD received past acknowledgement messages. In a different implementation, actual/estimated transmit power from a serving base station to a given MAD is averaged (404), and increased (406) by a prescribed amount to yield a target level. Whenever the non-serving base station transmits messages acknowledging receipt of packet data from the MAD, the non-serving base station transmits (408) at the target level.
대표청구항▼
What is claimed is: 1. A method for adjusting a transmit power level of a base station, the base station transmitting messages that acknowledge receipt of packet data from a mobile communication device (MCD), comprising: transmitting an acknowledgement message to the MCD in response to receiving fi
What is claimed is: 1. A method for adjusting a transmit power level of a base station, the base station transmitting messages that acknowledge receipt of packet data from a mobile communication device (MCD), comprising: transmitting an acknowledgement message to the MCD in response to receiving first packet data therefrom; determining whether the acknowledgement message was correctly received by the MCD based on whether a next communication received by the base station from the MCD includes second packet data that was a re-transmission of the first packet data transmitted by the MCD or new packet data; and adjusting the transmit power level of the base station for future acknowledgement messages transmitted to the MCD based on determining whether the transmitted acknowledgement message was correctly received by the MCD. 2. The method of claim 1, wherein said adjusting the transmit power level comprises: increasing the transmit power level of the base station by a first amount for future acknowledgement messages transmitted to the MCD responsive to determining that the second packet data was the re-transmission of the first packet data transmitted by the MCD. 3. The method of claim 1, wherein said adjusting the transmit power level comprises: decreasing the transmit power level of the base station by a second amount for future acknowledgement messages transmitted to the MCD responsive to determining that the new packet data was transmitted by the MCD. 4. The method of claim 1, wherein said adjusting the transmit power level comprises: preventing the adjustment of the transmit power level of the base station for future acknowledgement messages transmitted to the MCD responsive to determining that the new packet data was transmitted by the MCD. 5. The method of claim 1, comprising: transmitting a negative acknowledgement (NAK) message to the MCD in response to the base station not receiving the first packet data transmitted from the MCD; determining whether third packet data has been received by the base station from the MCD subsequent to transmitting the NAK message to the MCD; and increasing the transmit power level of the base station by a first amount for future acknowledgement messages transmitted to the MCD responsive to determining that no third packet data has been received by the base station from the MCD. 6. The method of claim 5, wherein said determining whether third packet data has been received by the base station comprises: determining whether new packet data has been received by the base station from the MCD subsequent to transmitting the NAK message to the MCD; and increasing the transmit power level of the base station by the first amount for future acknowledgement messages transmitted to the MCD responsive to determining that new packet data has been received by the base station from the MCD. 7. The method of claim 6, comprising: preventing the adjustment of the transmit power level of the base station for future acknowledgement messages transmitted to the MCD responsive to determining that no new packet data has been received by the base station from the MCD. 8. An apparatus for adjusting a transmit power level of a base station, the base station transmitting messages that acknowledge receipt of packet data from a mobile communication device (MCD), comprising: means for transmitting an acknowledgement message to the MCD in response to receiving first packet data therefrom; means for determining whether the acknowledgement message was correctly received by the MCD based on whether a next communication received by the base station from the MCD includes second packet data that was a re-transmission of the first packet data transmitted by the MCD or new packet data; and means for adjusting the transmit power level of the base station for future acknowledgement messages transmitted to the MCD based on determining whether the transmitted acknowledgement message was correctly received by the MCD. 9. The apparatus of claim 8, wherein said means for adjusting the transmit power level comprises: means for increasing the transmit power level of the base station by a first amount for future acknowledgement messages transmitted to the MCD responsive to determining that the second packet data was the re-transmission of the first packet data transmitted by the MCD. 10. The apparatus of claim 8, wherein said means for adjusting the transmit power level comprises: means for decreasing the transmit power level of the base station by a second amount for future acknowledgement messages transmitted to the MCD responsive to determining that the new packet data was transmitted by the MCD. 11. The apparatus of claim 8, wherein said means for adjusting the transmit power level comprises: means for preventing the adjustment of the transmit power level of the base station for future acknowledgement messages transmitted to the MCD responsive to determining that the new packet data was transmitted by the MCD. 12. The apparatus of claim 8, comprising: means for transmitting a negative acknowledgement (NAK) message to the MCD in response to the base station not receiving the first packet data transmitted from the MCD; means for determining whether third packet data has been received by the base station from the MCD subsequent to transmitting the NAK message to the MCD; and means for increasing the transmit power level of the base station by the first amount for future acknowledgement messages transmitted to the MCD responsive to determining that no third packet data has been received by the base station from the MCD. 13. The apparatus of claim 12, wherein said means for determining whether third packet data has been received by the base station comprises: means for determining whether new packet data has been received by the base station from the MCD subsequent to transmitting the NAK message to the MCD; and means for increasing the transmit power level of the base station by the first amount for future acknowledgement messages transmitted to the MCD responsive to determining that new packet data has been received by the base station from the MCD. 14. The apparatus of claim 13, comprising: means for preventing the adjustment of the transmit power level of the base station for future acknowledgement messages transmitted to the MCD responsive to determining that no new packet data has been received by the base station from the MCD. 15. A base station for transmitting messages that acknowledge receipt of packet data from a mobile communication device (MCD), comprising: a transmitter for transmitting an acknowledgement message to the MCD in response to receiving first packet data therefrom; and a controller for determining whether the acknowledgement message was correctly received by the MCD based on whether a next communication received by the base station from the MCD includes second packet data that was a re-transmission of the first packet data transmitted by the MCD or new packet data, and adjusting the transmit power level of the base station for future acknowledgement messages transmitted to the MCD based on determining whether the transmitted acknowledgement message was correctly received by the MCD. 16. The base station of claim 15, wherein said controller increases the transmit power level of the base station by a first amount for future acknowledgement messages transmitted to the MCD responsive to determining that the second packet data was the re-transmission of the first packet data transmitted by the MCD. 17. The base station of claim 15, wherein said controller decreases the transmit power level of the base station by an amount for future acknowledgement messages transmitted to the MCD responsive to determining that the new packet data was transmitted by the MCD. 18. A wireless communication system, comprising: at least one mobile communication device (MCD); at least one base station for transmitting messages that acknowledge receipt of packet data from the MCD; and the at least one base station comprising: a transmitter for transmitting an acknowledgement message to the MCD in response to receiving first packet data therefrom; a controller for determining whether the acknowledgement message was correctly received by the MCD based on whether a next communication received by the base station from the MCD includes second packet data that was a re-transmission of the first packet data transmitted by the MCD or new packet data, and adjusting the transmit power level of the base station for future acknowledgement messages transmitted to the MCD based on determining whether the transmitted acknowledgement message was correctly received by the MCD. 19. The wireless communication system of claim 18, wherein said controller increases the transmit power level of the base station by a first amount for future acknowledgement messages transmitted to the MCD responsive to determining that the second packet data was the re-transmission of the first packet data transmitted by the MCD. 20. The wireless communication system of claim 18, wherein said controller decreases the transmit power level of the base station by a second amount for future acknowledgement messages transmitted to the MCD responsive to determining that the new packet data was transmitted by the MCD.
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이 특허에 인용된 특허 (15)
Uehara, Toshiyuki; Hiramatsu, Katsuhiko; Miyoshi, Kenichi; Miya, Kazuyuki; Hoshino, Masayuki, Base station apparatus and radio transmission method.
Saints Keith W. ; Chen Tao, Method and apparatus for adjusting thresholds and measurements of received signals by anticipating power control commands yet to be executed.
Chen, Tao; Holtzman, Jack M.; Razoumov, Leonid; Patel, Shim; Saints, Keith; Tiedemann, Jr., Edward G., Method and apparatus for controlling transmission power while in soft handoff.
Chen Tao ; Odenwalder Joseph P. ; Tiedemann ; Jr. Edward G. ; Willenegger Serge,CHX, Method and apparatus for time efficient retransmission using symbol accumulation.
Yu-Cheun Jou ; Edward G. Tiedemann, Jr., Mobile station supervision of the forward dedicated control channel when in the discontinuous transmission mode.
Moon, Hi-Chan; Choi, Jin-Woo; Kim, Young-Ky; Ahn, Jae-Min; Lee, Hyun-Suk, Power control device and method for controlling a reverse link common channel in a CDMA communication system.
Moon, Hi-Chin; Choi, Jin-Woo; Ahn, Jae-Min; Hwang, Young-Jun, Power level arbitration between base station and mobile station in mobile communication system.
Quek, Quee Seng Tony; Lei, Zhongding; Wong, Sai Ho, Base stations, cellular communication systems, methods for controlling a base station, and methods for controlling a cellular communication system.
Goyal, Anoop Kumar; Vargantwar, Sachin R.; Shetty, Manoj; Oroskar, Siddharth S., Determining whether a wireless access node should retransmit data packets based on the condition of a reverse wireless link.
Chen, Tao; Holtzman, Jack M.; Razoumov, Leonid; Patel, Shimman; Saints, Keith; Tiedemann, Jr., Edward G., Method and apparatus for controlling transmission power while in soft handoff.
Heo, Youn-Hyoung; Lee, Ju-Ho; Choi, Sung-Ho; Park, Seung-Hoon, Method and apparatus for transmitting/receiving ACK/NACK in a frequency division multiple access system.
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