Power control method and device
A transmission power control and staggered arrangement technology, which is applied in the direction of transmission control/equalization, electrical components, communication between multiple stations, etc., can solve the problems of fast bandwidth fading of high-speed mobile users, and achieve good tracking of fast fading, Realize the effect of fast power control
Inactive Publication Date: 2008-06-11
ZTE CORP
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Problems solved by technology
[0005] In order to solve the problem that the bandwidth of high-speed mobile users is affected by fast fading, the present invention provides a power control method and device
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[0020] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0021] The power control method in the multi-carrier frequency time division multiplexing code division multiple access system configures at least two carrier frequencies so that the signal transmission directions in at least one time slot are different, which includes the following steps: The time slot conversion points are staggered, and the measurement result of one carrier frequency in at least two carrier frequencies is sent to the opposite end on the other carrier frequency.
[0022] figure 1 It is a flow chart of the power control method in the multi-carrier frequency time division multiplexing code division multiple access system according to the present inv...
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The invention provides a power control method and device, wherein, at least two carrier frequencies are configured that the signal transmission directions are different in at least one time slot. The invention includes the following steps: step S102, an uplink time slot and a downlink time slot are staggeredly arranged according to a preconcerted regulation while configuring time slot breaking points of at least two carrier frequencies; and step S104, when user equipment transmits a signal in one time slot of the uplink time slot and the downlink time slot, a base station measures the transmission signal, and sends the measurement result to the user equipment in the other time slot of the uplink time slot and the downlink time slot of the back with the mode of transmitting a power control command. Therefore, when a multi-carrier frequency cell is configured, the invention can fulfill rapid closed loop power control of the time slot, thereby shortening the delay of closed loop power control, tracking fast fading, and improving signal quality.
Description
technical field [0001] The present invention relates to a method and device for fast power control in multi-carrier frequency time division multiplexing code division multiple access (TD-SCDMA) system in the third generation mobile communication, more specifically, relates to a multi-carrier A method and device for fast power control of a frequency cell and a multi-carrier frequency mobile phone system. Background technique [0002] TD-SCDMA is an interference-limited system. On the same frequency, the system has many user equipments (UEs) to send and receive signals. In order to reduce interference when sending and receiving signals, the transmit power must be controlled. In addition, in order to combat the signal fading in the wireless transmission environment, power control must be carried out, especially in the environment where the signal fading changes rapidly faced by fast-moving users, power control is even more necessary. The main power control method of TD-SCDMA ...
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Login to View More IPC IPC(8): H04B7/005H04B1/707H04B7/26
Inventor 李立文
Owner ZTE CORP