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Control method and control equipment for uplink close-loop power

A technology of closed-loop power control and base station equipment, which is applied in power management, wireless communication, electrical components, etc., can solve the problem of frequent update of TPC commands and achieve the effect of solving frequent updates of TPC commands

Active Publication Date: 2014-12-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides an uplink closed-loop power control method and its equipment, which are used to solve the problem of frequent updating of TPC commands in the existing power control technology

Method used

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  • Control method and control equipment for uplink close-loop power
  • Control method and control equipment for uplink close-loop power
  • Control method and control equipment for uplink close-loop power

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Embodiment Construction

[0019] In order to make up for the shortcomings of the existing technology, the embodiment of the present invention sets a new TPC command update period, that is, N (N≥2) HARQ RTT (HARQ round-trip-time, HARQ round-trip time, where HARQ is Hybrid Automatic The English abbreviation of Repeat Request, Chinese is hybrid automatic repeat request) as the TPC command update cycle.

[0020] see figure 2 , which is a schematic diagram of an uplink closed-loop power control process provided by an embodiment of the present invention, and the process may include:

[0021] Step 201, when the TPC command update period arrives, the base station generates a TPC command for the terminal according to the uplink signal of the terminal;

[0022] Step 202, the base station sends a TPC command to the terminal, so that the terminal sets uplink transmission power according to the received TPC command.

[0023] Wherein, the length of the TPC command update period is N HARQ RTTs (the interval betwee...

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Abstract

The invention discloses a control method and control equipment for uplink close-loop power. The method includes: generating TPC (transmit power control) commands for a terminal via a base station according to uplink signals of the terminal when the update cycle of the TPC commands controlled by transmit power is reached, the update cycle of the TPC commands is N times more than the HARQ RTT (hybrid automatic repeat request round trip time), N>=2; and sending the TPC commands to the terminal via the base station. By the method, problem of frequent update of the TPC commands in the prior art of power control can be solved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to an uplink closed-loop power control method and equipment thereof. Background technique [0002] The LTE (Long Term Evolution, long-term evolution) system uses OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) technology as the basis for packet data transmission. The interference between them is too high, thereby avoiding the degradation of system performance. [0003] The power control process of the uplink PUSCH (Physical Uplink Shared Channel, physical uplink shared channel) is to adjust the transmission power of the PUSCH to compensate for the influence of path loss, shadow fading, and fast fading; at the same time, the power control of the PUSCH is also used for Controls the level of interference between cells. Uplink PUSCH power control mainly consists of two parts: open loop and closed loop. An indispensable and im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/08H04W52/14
Inventor 刘蓉
Owner DATANG MOBILE COMM EQUIP CO LTD
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