Implement method for power control of the high speed shared control channel and the high speed shared information channel

• US 8,743,761 B2
• Filed: 11/01/2006
• Issued: 06/03/2014
• Est. Priority Date: 11/02/2005
• Status: Active Grant

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Ma, Zijiang, Ma, Zhifeng, Zhang, Yincheng
• Primary Examiner(s): DUONG, CHRISTINE T
• Application Number:
  US12/092,005
• Publication Number:
  US 20080285522A1
• Time in Patent Office: 2,771 Days
• Field of Search: None
• US Class Current: 370/311
• 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 implementing power control of a high speed shared information channel (HS-SICH), used in High Speed Downlink Packet Access (HSDPA) technology in a TD-CDMA system to perform power control for the high speed shared information channel (HS-SICH) sent by a user equipment to a Node B, including the steps of:

configuring parameters related to the power control for the user equipment by a 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 the high speed shared information channel (HS-SICH) by the user equipment according to a “

transmit power control”

parameter calculated by the Node B and carried on a high speed shared control channel (HS-SCCH);

the method further including the 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 a “

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 a target value by the user equipment;

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

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

; and

calculating “

transmit power control”

information by the user equipment according to said target value and said actual value, and carrying the “

transmit power control”

information on the high speed shared information channel (HS-SICH);

wherein the step of said network side configuring the parameters related to the power control for the user equipment through the higher layer signaling includes uniformly configuring a set of parameters related to the power control for the whole high speed shared information channel (HS-SICH) set of the user equipment; and

the parameters related to the power control configured by said network side for the user equipment through the higher layer signaling are configured through an information element “

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

in a “

Radio Resource Control”

protocol.