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Control method for high speed sharing indication channel power

A high-speed shared control and channel indication technology, applied in power management, wireless communications, sustainable buildings, etc., can solve the problem that closed-loop power control methods are no longer suitable for channel power control, and achieve improved network throughput and service satisfaction, The effect of large capacity and reduction of transmission error probability

Inactive Publication Date: 2012-06-13
ZTE CORP
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Problems solved by technology

[0003] According to the above description, the previous closed-loop power control method is no longer suitable for this type of channel power control, so it is necessary to propose a method for this type

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  • Control method for high speed sharing indication channel power
  • Control method for high speed sharing indication channel power
  • Control method for high speed sharing indication channel power

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Embodiment Construction

[0042]The basic idea of ​​the present invention is: if the current downlink transmission TTI and the last downlink transmission TTI belong to the same continuous transmission set, a mode similar to closed-loop power control is adopted; otherwise, an open-loop mode is adopted, and the downlink command word at this time is "DoNothing", the receiver will not adjust the power after receiving the command word. Among them, HS-SCCH (High-Speed ​​Shared Control Channel: High-Speed ​​Shared Control Channel) continuous scheduling set refers to a set of one or more continuous downlink SCCH transmission TTIs of a certain user, and the SCCH between adjacent TTIs in this set is idle The TTI numbers are all smaller than a certain maximum interval (expressed in TTI numbers). In this paper, the maximum interval set by the system is recorded as MAX_TTI_GAP, and this value reflects the correlation degree of the channel time domain.

[0043] The basic principle of implementing the HS-SICH power ...

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Abstract

A control method of a high speed sharing indication channel power is applied in the TD-SCDMA high speed downstream grouping access system. When a high speed sharing control channel HS-SCCH dispatching is provided at present, the node B executes the following steps: (a) executing the nest step if the current transmitting time interval is provided with the HS-SCCH dispatching, but not the first TTI of the continuous dispatching set, and the current continuous dispatching set receives the high speed sharing indication channel HS-SICH upstream feedback, otherwise in the open loop state without processing the power adjustment, and finishing; (b) going into the close loop state, transmitting the power control command word of the current TTI at the downstream, and determining the power control command word of the next TTI, finishing. The invention realizes the timely and effectively control on the HS-SICH channel power in the TD-SCDMA HSDPA system, reduces the power spending as far as possible when ensuring the performance of the chain performance, obtains larger capacitance.

Description

technical field [0001] The present invention relates to a power control method, in particular to a TD-SCDMA HSDPA (High-Speed ​​Downlink Packet Access technology: High-Speed ​​Downlink Packet Access) system in the field of third-generation mobile communication. The NodeB side controls the HS-SICH (High-Speed Shared InformationChannel) channel power method. Background technique [0002] The power control technology of the wireless communication system can adopt the minimum transmission power under the premise of satisfying the quality of the receiving end, and can also effectively reduce the interference between users and prolong the standby time of the terminal. Generally speaking, for the uplink and downlink continuous transmission system, the power control is continuously closed-loop. However, due to the particularity of some systems, there may be uplink and downlink channels in a certain period of time, while the transmission of this channel is not performed in another pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/08H04W52/10H04W52/24H04W52/38
CPCY02B60/50
Inventor 郑坤杨宁芮华侯志华张银成马志锋
Owner ZTE CORP
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