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Mobile phone base band chip power-saving synchronizing method

A baseband chip and chip technology, applied in the field of communication, can solve problems such as frequency difference, and achieve the effects of fewer control signals, simple implementation, synchronization and small frequency difference

Active Publication Date: 2007-10-24
RDA CHONGQING MICROELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Obviously, there is a certain frequency difference in this method

Method used

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  • Mobile phone base band chip power-saving synchronizing method
  • Mobile phone base band chip power-saving synchronizing method

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Experimental program
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Embodiment Construction

[0027] In order to solve the power consumption problem of the baseband chip of the mobile phone, the invention improves the power saving capability of the chip, prolongs the use time of the mobile phone, and simultaneously maintains the time synchronization between the mobile phone and the base station when the chip returns to the normal mode from the power saving mode. As shown in Figure 1, the workflow of the power saving mode of the present invention is as follows:

[0028] 1. Before entering the power-saving mode, first start the H calculation circuit; the function of the H calculation circuit is to calculate the multiple value relationship between the system working clock and the slow clock, the time used for the power-saving mode and the synchronization relationship when exiting the power-saving mode calculate.

[0029] 2. After the H calculation circuit completes the calculation, it issues a command to enter the power saving mode.

[0030] 3. The duration of the power-...

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Abstract

When chip is in stand by mode, system operation timer of the chip is closed so that each module in the chip stops working. Control is started up under slow timer to maintain save mode so as to reach purpose of reducing power consumption and saving electricity. In order to keep synchronization to base station when save mode exits, the invention designs a calculation method to keep good synchronization to base station when save mode exits, and to possess very small frequency deviation. Comparing with prior art, the invention possesses advantages of few control signals, easy of implementation, controllable time in save mode, and small frequency deviation.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a power-saving synchronization method for a mobile phone baseband chip. Background technique [0002] In the prior art, in addition to the design and development of mobile phones towards the direction of multi-function, saving the power consumption of mobile phones to the greatest extent and prolonging the use time of mobile phones are also the goals that technicians in the field have been pursuing. For example, Chinese patent 01120660.8 "Power Saving Method for Mobile Phones" and 200510008064.7 "A Power Saving Method for Mobile Terminals" all use different technical means from different angles to solve the same problem. The power saving modes of these methods mainly include that the screen or memory of the mobile phone does not work, and the baseband chip of the mobile phone still does not save power. 200510023391.X "TD-SCDMA mobile phone system power management and powe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/32H04W56/00H04W52/02H04W88/02
CPCH04W56/0015Y02D30/70
Inventor 杨小勇郑建宏林毅
Owner RDA CHONGQING MICROELECTRONICS TECH CO LTD
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