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Device and method for controlling transmission power of service signal

A business signal and signal technology, applied in power management, transmission system, transmission control/equalization, etc., can solve the problems of increased reverse link interference, power waste, and reduced reverse link capacity.

Inactive Publication Date: 2003-12-10
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] As mentioned above, the transmitter ignores the power down signal in the power control signal fed back from the receiver, thereby using the deactivated power down signal to activate the power up signal only after recovery from deep fading, resulting in wasted power
[0011] Moreover, another problem that arises is that high power data transmission causes increased interference on the reverse link and reduces the capacity of the reverse link

Method used

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  • Device and method for controlling transmission power of service signal
  • Device and method for controlling transmission power of service signal
  • Device and method for controlling transmission power of service signal

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0037] Figure 4 is to change G T with G P The flow chart of the method of ratio, wherein the controller 300 calculates the compensation gain for power control.

[0038] see Figure 4 , in step 401, the controller 300 judges whether puncturing information is received from the upper layer, so as to determine whether a frame is punctured. If the puncture information is received from the upper layer, the controller 300 determines a compensation gain from the puncture information at step 405 and outputs the determined compensation gain to the first signal controller 380 at step 407 . At this time, in the non-punctured interval of the frame, the first signal controller 380 outputs a compensation gain signal having a compensation gain. On the other hand, if the puncturing information is not received from the upper layer, the controller 300 notifies the first signal controller 380 that it will output a compensation gain of '1' at step 402 . During the power compensation with res...

no. 2 example

[0040] Figure 5 is a modification of the power control method when transmitting punctured frames according to the second embodiment of the present invention G T with G P Flowchart of the ratio method.

[0041] see Figure 5 , in step 501, the controller 300 judges whether puncturing information is received from the upper layer, so as to determine whether a frame is punctured. If the punching information is received from the upper layer in step 501, the controller 300 detects the punching length included in the punching information, acquires the compensation gain of the punching length from the memory 390 in step 505, and outputs the compensation gain to the first signal control in step 506 device 380. On the other hand, if the puncture information is not received from the upper layer, the controller 300 notifies the first signal controller 380 that it will output a compensation gain of '1' at step 502 . During power compensation with respect to the punctured interval of ...

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Abstract

A code division multiple access (CDMA) mobile communication system for controlling power for a traffic signal of one frame includes: a signal generator for simultaneously generating a pilot signal and the traffic signal on a frame basis; a power compensator for compensating the power of the traffic signal according to a punctured length of a punctured frame among the frames; and a signal combiner for combining the power-compensated traffic signal and the pilot signal generated from the signal generator.

Description

field of invention [0001] The present invention relates to a power control device and method of a mobile communication system, in particular to a power control device and method for respectively controlling pilot signal gain and service signal compensation gain in different ways. Background technique [0002] Mobile information systems usually use Code Division Multiple Access (CDMA) technology. In a CDMA mobile communication system, a receiver receives a pilot signal via a pilot channel for receiving a frame signal transmitted from a transmitter in each channel and measuring the strength of the received pilot signal. The receiver generates a power control signal according to the strength of the pilot signal, and sends the generated power control signal back to the transmitter. The transmitter compares the pilot channel signal strength with a reference value (or threshold) for control. If the strength of the pilot channel signal is lower than the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/04H04B1/76H04B7/005H04B7/26H04J13/00H04W52/44
CPCH04W52/325H04W52/54Y02B60/50H04B1/76
Inventor 金宰烈安宰民金英基
Owner SAMSUNG ELECTRONICS CO LTD