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Radio communication device and control method of radio communication device

A technology of a wireless communication device and a control method, which is applied in the directions of wireless communication, sustainable communication technology, advanced technology, etc., can solve the problems of high power consumption and the like

Inactive Publication Date: 2003-12-10
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In addition, in the above-mentioned conventional technology, the operation of the CPU part that consumes a large amount of power does not stop, similar to the RF circuit part and the baseband processing circuit part.

Method used

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  • Radio communication device and control method of radio communication device
  • Radio communication device and control method of radio communication device
  • Radio communication device and control method of radio communication device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0065] As the wireless communication device according to Embodiment 1 of the present invention, such as figure 1 As shown in the block diagram of FIG. 1 , it has an antenna 1, a wireless signal transceiver unit (RF circuit) 2, a clock supply unit 6, a modulation and demodulation unit (baseband processing circuit) 12, a transceiver control unit 17, and a CPU 23 that controls the entire wireless communication device. .

[0066] As the communication method of the above-mentioned wireless communication device, it can be set according to the principle that the data is carried on the radio wave, and the communicable period that can communicate with the external device and the non-communication period different from the above-mentioned communicable period become alternate (such as time division time slots). multiplexing). For example, there can be mentioned a frequency hopping type in which the frequency changes mutually in units of, for example, 1MHz within a predetermined frequenc...

Embodiment approach 2

[0118] Next, a radio communication device according to Embodiment 2 of the present invention will be described. Such as Figure 9 As shown, the above-mentioned wireless communication device is an embodiment of the Bluetooth (Bluetooth) technology, which is one of the short-distance wireless communication methods of the frequency-hopping spectrum diffusion method, and is equipped with an antenna 41, a wireless signal transmitting and receiving unit (RF circuit) 42 , clock supply unit 46 , modulation and demodulation unit (baseband processing circuit) 52 , transmission and reception control unit 57 , and CPU 64 that control the entire wireless communication device.

[0119] The difference from Embodiment 1 above is that the transmission and reception control unit 57 is equipped with a communication slot counter 59 that starts counting the number of slots from the time of the first transmission and reception. When the value of the counter 59 reaches a predetermined value (when d...

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Abstract

A radio communication equipment is provided with a clock generating section which generate an operation clock signal for a communication permitting period in which communication with an external device is permitted by carrying data over electric wave and a power-down clock signal for non-communication period respectively based on control signals. A high-speed counter is provided for counting an operation clock signal for controlling the communication permitting period. A low-speed slot counter is provided for counting a power-down clock signal for controlling the non-communication period. A clock control section is provided for outputting the count value of the high speed counter and the count value of the low speed counter, and continues to count a count value between the high speed slot counter and the low speed counter.

Description

technical field [0001] The present invention relates to a radio communication device capable of reducing power consumption and a control method of the radio communication device. Background of the invention [0002] In a radio communication device of the frequency hopping type spectrum diffusion method, in general, the RF circuit part and the baseband processing circuit and the central control part (hereinafter referred to as the CPU) mainly use largely different clock frequencies. In the RF circuit part, a high-frequency RF clock signal is usually used. [0003] On the other hand, in circuit parts other than the RF circuit including each circuit part of the baseband processing circuit and CPU, an operating clock signal whose frequency is set lower than that of the RF clock signal is used. Therefore, in the RF circuit part driven by the RF clock signal with a high frequency, the consumption current increases compared with other circuit parts. [0004] In order to suppress ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/16H04B1/3822H04B1/40
CPCH04W52/0287Y02B60/50Y02D30/70
Inventor 松村和宏
Owner SHARP KK