Implement Method for Power Control of the High Speed Shared Control Channel and the High Speed Shared Information Channel

• US 20080285522A1
• Filed: 11/01/2006
• Published: 11/20/2008
• Est. Priority Date: 11/02/2005
• Status: Active Grant

• Current Assignee: ZTE Corporation
• Original Assignee: Keji Road South Zte Plaza
• Inventors: Ma, Zijiang, Zhang, Yincheng, Ma, Zhifeng
• Granted Patent: US 8,743,761 B2
• Time in Patent Office: Days
• US Class Current: 370/335
• CPC Class Codes: H04W 52/08 Closed loop power control
• CPC Class Codes: H04W 52/12 Outer and inner loops
• CPC Class Codes: H04W 52/143 Downlink power control
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/20 using error rate
• CPC Class Codes: H04W 52/241 taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
• CPC Class Codes: H04W 52/248 where transmission power control commands are generated based on a path parameter
• CPC Class Codes: H04W 52/286 during data packet transmission, e.g. high speed packet access [HSPA]
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range

Abstract

The present invention discloses a method for implementing power control of the high speed shared control channel and the high speed shared information channel, including: Node B independently setting the initial transmit power of the HS-SCCH with reference to the maximum power of HS-SCCH configured by higher layer and completing the open-loop power control; performing the close-loop power control based on transmit power control TPC command; UE calculating the initial transmit power based on a series of parameters configured by the higher layer and completing the open-loop power control; UE adjusting the close-loop transmit power based on the TPC command carried on HS-SCCH and completing the close-loop power control. Wherein, Node B generates the TPC by taking the high speed shared information channel SNR generated by itself as the target value and the high speed shared information channel SNR measured as the actual value. The present invention can achieve the power control of HS-SCCH and HS-SICH based on the TPC parameters for HS-SICH close-loop control calculated by Node B.

Claims

1. A method for Node B carrying transmit power control parameters on high speed shared control channel (HS-SCCH), used for High Speed Downlink Packet Access (HSDPA) technology in TD-CDMA system, including the following steps of:

generating a high speed shared information channel (HS-SICH) signal noise ratio (SNR) target value by Node B;

measuring the received high speed shared information channel (HS-SICH) signal noise ratio (SNR) by Node B to obtain an actual measurement value;

calculating a “

transmit power control TPC”

parameter by Node B according to said high speed shared information channel (HS-SICH) signal noise ratio (SNR) target value and actual measurement value, and carrying the “

transmit power control TPC”

parameter on high speed shared control channel (HS-SCCH).

2. The method of claim 1, wherein said high speed shared information channel (HS-SICH) signal noise ratio (SNR) target value is generated according to channel quality indicator fed back on high speed shared information channel (HS-SICH), or data block decoding information, or modulation mode information of high speed physical downlink shared channel, or their combination.

3. The method of claim 1, wherein the step of said Node B calculating the “

transmit power control TPC”

parameter according to the target value and the actual value of signal noise ratio (SNR) includes;

when the actual value is larger than the target value, setting the “

transmit power control TPC”

parameter as “

DOWN”

; and

when the actual value is less than the target value, setting the “

transmit power control TPC”

parameter as “

UP”

.

4. A method for implementing power control of high speed shared control channel (HS-SCCH), used in High Speed Downlink Packet Access (HSDPA) technology in TD-CDMA system to perform power control for the high speed shared control channel (HS-SCCH) sent by Node B to user equipment, including the following steps of:

configuring parameters related to the power control by network side for Node B through higher layer signaling, including “

maximum high speed shared control channel (HS-SCCH) power”

parameter;

setting initial high speed shared control channel (HS-SCCH) power by Node B according to said “

Maximum high speed shared control channel (HS-SCCH) power”

parameter, the initial high speed shared control channel (HS-SCCH) power being used for open-loop power control; and

adjusting close-loop transmit power by Node B according to “

transmit power control”

parameter carried on the channel.

5. The method of claim 4, further including the steps of:

calculating the “

transmit power control”

parameter by Node B according to high speed shared information channel (HS-SICH) signal noise ratio (SNR) target value independently generated and high speed shared information channel (HS-SICH) signal noise ratio (SNR) actual measurement value measured, and carrying the “

transmit power control”

parameter on high speed shared control channel (HS-SCCH).

6. The method of claim 4, wherein said “

Maximum high speed shared control channel (HS-SCCH) power”

parameter is configured by the network side through “

Physical Shared Channel Re-configuration process”

in “

Node B application part”

protocol.

7. The method of claim 4, wherein the step of said Node B adjusting the close-loop transmit power according to the “

transmit power control”

parameter carried on the channel is performed according to the “

transmit power control”

parameter carried on high speed shared information channel (HS-SICH).

8. The method of claim 4, wherein the step of said Node B adjusting the close-loop transmit power according to the “

transmit power control”

parameter carried on the channel is performed according to the “

transmit power control”

parameter carried on dedicated physical channel.

9. The method of claim 5, wherein said high speed shared information channel (HS-SICH) signal noise ratio (SNR) target value is generated according to channel quality indicator fed back on high speed shared information channel (HS-SICH), or data block decoding information, or modulation mode information of high speed physical downlink shared channel, or their combination.

10. The method of claim 5, wherein the step of said Node B calculating the “

transmit power control”

parameter according to the target value and the actual value of signal noise ratio (SNR) includes;

when the actual value is larger than the target value, setting the “

transmit power control”

parameter as “

DOWN”

; and

when the actual value is less than the target value, setting the “

transmit power control”

parameter as “

UP”

.

11. A method for implementing power control of high speed shared information channel (HS-SICH), used in High Speed Downlink Packet Access (HSDPA) technology in TD-CDMA system to perform power control for high speed shared information channel (HS-SICH) sent by user equipment to Node B, including the following steps of:

configuring parameters related to the power control for the user equipment by network side through higher layer signaling, said parameters including parameters used to calculate initial transmit power;

calculating the initial high speed shared information channel (HS-SICH) transmit power used for open-loop power control by the user equipment according to said parameters configured;

adjusting close-loop power control of high speed shared information channel (HS-SICH) by the user equipment according to “

transmit power control”

parameter carried on high speed shared control channel (HS-SCCH).

12. The method of claim 11, further including the following steps of:

configuring the parameters related to the power control for the user equipment by the network side through the higher layer signaling, said parameters including “

high speed shared control channel (HS-SCCH) block error Ratio target”

parameter;

taking the “

high speed shared control channel (HS-SCCH) block error ratio target”

parameter configured by the higher layer as the target value by the user equipment;

measuring the received block error rate of high speed shared control channel (HS-SCCH) by the user equipment to obtain the actual value of “

high speed shared control channel (HS-SCCH) block error ratio”

; and

calculating the “

transmit power control”

information by the user equipment according to said target value and said actual value, and carrying the information on high speed shared information channel (HS-SICH).

13. The method of claim 11, wherein the step of said network side configuring the parameters related to the power control for the user equipment through the higher layer signaling is to configure a set of parameters related to the power control for the whole high speed shared information channel (HS-SICH) set of the user equipment.

14. The method of claim 11, wherein the parameters related to the power control configured by said network side for the user equipment through the higher layer signaling are configured through information element “

high speed shared control channel (HS-SCCH) Information”

in “

Radio Resource Control”

protocol.

15. The method of claim 12, wherein the step of said network side configuring the parameters related to the power control for the user equipment through the higher layer signaling is to configure a set of parameters related to the power control for the whole high speed shared information channel (HS-SICH) set of the user equipment.

16. The method of claim 12, wherein the parameters related to the power control configured by said network side for the user equipment through the higher layer signaling are configured through information element “

high speed shared control channel (HS-SCCH) Information”

in “

Radio Resource Control”

protocol.