IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0370401
(2003-02-19)
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| 우선권정보 |
KR-10-2002-0008873(2002-02-17) |
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발명자
/ 주소 |
- Seo,Myeong Sook
- Lee,Ju Ho
- Choi,Sung Ho
- Kwak,Yong Jun
- Lee,Kook Heui
- Park,Joon Goo
|
| 출원인 / 주소 |
- Samsung Electronics Co., Ltd.
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| 대리인 / 주소 |
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| 인용정보 |
피인용 횟수 :
91 인용 특허 :
0 |
초록
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A radio network controller (RNC) transmits a power offset for controlling transmission power of an uplink high-speed dedicated physical control channel (HS-DPCCH) when a user equipment (UE) enters a handover region, in a mobile communication system including the RNC, a Node B connected to the RNC, a
A radio network controller (RNC) transmits a power offset for controlling transmission power of an uplink high-speed dedicated physical control channel (HS-DPCCH) when a user equipment (UE) enters a handover region, in a mobile communication system including the RNC, a Node B connected to the RNC, and the UE located in one of at least two cell areas occupied by the Node B. The Node B transmits data to the UE over a high-speed downlink shared channel (HS-DSCH) and the UE transmits information indicating reception of the data to the Node B over the uplink HS-DPCCH. The RNC informs the UE of a power offset for determining a transmission power increment of the uplink HS-DPCCH, if it is determined that the UE is located in the handover region. The RNC informs the Node B of the power offset so that the Node B can determine a threshold value for determining information indicating reception of the data, depending on the power offset.
대표청구항
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What is claimed is: 1. A method for transmitting by a radio network controller (RNC) a power offset for controlling transmission power of an uplink high-speed dedicated physical control channel (HS-DPCCH) when a user equipment (UE) enters a handover region, in a mobile communication system includin
What is claimed is: 1. A method for transmitting by a radio network controller (RNC) a power offset for controlling transmission power of an uplink high-speed dedicated physical control channel (HS-DPCCH) when a user equipment (UE) enters a handover region, in a mobile communication system including the RNC, a Node B connected to the RNC, and the UE located in one of at least two cell areas occupied by the Node B, wherein the Node B transmits data to the UE over a high-speed downlink shared channel (HS-DSCH) and the UE transmits a response information indicating reception status of the data to the Node B over the uplink HS-DPCCH, the method comprising the steps of: informing the UE of a power offset; determining a transmission power increment of the uplink HS-DPCCH, if it is determined that the UE is located in the handover region; informing the Node B of the power offset; and determining by the Node B a threshold value for determining the response information received from the UE, depending on the power offset. 2. The method of claim 1, wherein the power offset is transmitted to the UE through a medium access control (MAC) message. 3. The method of claim 2, wherein the MAC message serves as an active set update message. 4. The method of claim 1, wherein the power offset is transmitted to the Node B through a Node B application part (NBAP) message. 5. The method of claim 4, wherein the NBAP message serves as a radio link reconfiguration request message. 6. The method of claim 1, wherein the power offset is transmitted to the Node B, using a frame protocol. 7. The method of claim 6, wherein when using the frame protocol, the RNC transmits the power offset to the Node B through a spare field of a control frame. 8. The method of claim 6, wherein when using the frame protocol, the RNC inserts the power offset into spare bits in a header field of a data frame and transmits the power offset-inserted data frame to the Node B. 9. The method of claim 1, wherein the response information is defined as one of an acknowledgement (ACK) and a negative acknowledgement (NACK), and provides different power offsets for the ACK and the NACK. 10. The method of claim 9, wherein a transmission power increment based on the power offset is the response information, and a transmission power increment when the response information received from UE is defined as the NACK is greater than a transmission power increment when the response information is defined as the ACK. 11. The method of claim 1, wherein the uplink HS-DPCCH transmits channel quality indicator (CQI) information for a channel transmitted from the Node B to the UE and the response information, and provides different power offsets for the response information and the CQI information. 12. The method of claim 11, wherein a transmission power increment for the CQI information based on the power offset is greater than a transmission power increment for the response information. 13. An apparatus for transmitting and receiving a power offset for controlling transmission power of an uplink high-speed dedicated physical control channel (HS-DPCCH) when a user equipment (UE) enters a handover region, in a mobile communication system including a radio network controller (RNC), a Node B connected to the RNC, and the UE located in one of at least two cell areas occupied by the Node B, wherein the Node B transmits data to the UE over a high-speed downlink shared channel (HS-DSCH) and the UE transmits response information indicating reception status of the data to the Node B over the uplink HS-DPCCH, the apparatus comprising: the RNC for informing the UE and the Node B of a power offset for determining a transmission power increment of the uplink HS-DPCCH, if it is determined that the UE is located in the handover region; the UE for increasing transmission power of the uplink HS-DPCCH depending on the power offset, and transmitting the uplink HS-DPCCH at the increase transmission power; and the Node B for determining a threshold value depending on the transmission power of the uplink HS-DPCCH, estimated based on the power offset, and determining response information received from the UE depending on the threshold value. 14. The apparatus of claim 13, wherein the power offset is transmitted to the UE through a medium access control (MAC) message. 15. The apparatus of claim 14, wherein the MAC message serves as an active set update message. 16. The apparatus of claim 13, wherein the power offset is transmitted to the Node B through a Node B application part (NBAP) message. 17. The apparatus of claim 16, wherein the NBAP message serves as a radio link reconfiguration request message. 18. The apparatus of claim 13, wherein the power offset is transmitted to the Node B, using a frame protocol. 19. The apparatus of claim 18, wherein when using the frame protocol, the RNC transmits the power offset to the Node B through a spare field of a control frame. 20. The apparatus of claim 18, wherein when using the frame protocol, the RNC inserts the power offset into spare bits in a header field of a data frame and transmits the power offset-inserted data frame to the Node B. 21. The apparatus of claim 13, wherein the response information is defined as one of an acknowledgement (ACK) and a negative acknowledgement (NACK), and provides different power offsets for the ACK and the NACK. 22. The apparatus of claim 21, wherein a transmission power increment based on the power offset is the response information, and a transmission power increment when the response information is defined as the NACK is greater than a transmission power increment when the response information is defined as the ACK. 23. The apparatus of claim 13, wherein the uplink HS-DPCCH transmits channel quality indicator (CQI) information for a channel transmitted from the Node B to the UE and the response information, and provides different power offsets for the response information and the CQI information. 24. The apparatus of claim 23, wherein a transmission power increment for the CQI information based on the power offset is greater than a transmission power increment for the response information. 25. A method for controlling transmission power of an uplink high-speed dedicated physical control channel (HS-DPCCH) when a user equipment (UE) enters a handover region, in a mobile communication system including a radio network controller (RNC), a Node B connected to the RNC, and the UE located in one of at least two cell areas occupied by the Node B, wherein the Node B transmits data to the UE over a high-speed downlink shared channel (HS-DSCH) and the UE transmits a response information indicating reception status of the data to the Node B over the uplink HS-DPCCH, the method comprising the steps of: transmitting to the RNC a report indicating that the UE enters the handover region; receiving a power offset from the RNC through an active set update message in response to the report; increasing transmission power of the uplink HS-DPCCH depending on the power offset; and transmitting the uplink HS-DPCCH at the increased transmission power. 26. The method of claim 25, wherein the response information is defined as one of an acknowledgement (ACK) and a negative acknowledgement (NACK), and provides different power offsets for the ACK and the NACK. 27. The method of claim 26, wherein a transmission power increment based on the power offset is the response information, and a transmission power increment when the response information is defined as the NACK is greater than a transmission power increment when the response information is defined as the ACK. 28. The method of claim 25, wherein the uplink HS-DPCCH transmits channel quality indicator (CQI) information for a channel transmitted from the Node B to the UE and the response information, and provides different power offsets for the information and the CQI information. 29. The apparatus of claim 28, wherein a transmission power increment for the CQI information based on the power offset is greater than a transmission power increment for the response information.
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