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Mobile wireless communication terminal and mobile wireless communication system

A mobile wireless and communication terminal technology, applied in the field of mobile wireless communication terminals, can solve the problems of reducing the transmission speed, etc., and achieve the effects of reducing the transmission speed, reducing the transmission power, and improving the poor reception sensitivity

Inactive Publication Date: 2007-06-13
SONY ERICSSON MOBILE COMM AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0033] The mobile wireless communication terminal of the present invention is a terminal having a non-contact communication function of performing non-contact communication using a carrier wave of a predetermined frequency, which solves the above-mentioned problems by including: Wireless communication with a base station in a frequency band whose radiated wave frequency range at least partially overlaps; a transmission power setting device for setting signal transmission power according to an instruction from the base station; a reception strength measuring device for measuring signal reception strength during wireless communication with the base station The receiving quality information generating device is used to generate information representing the receiving quality of the terminal according to the received signal strength; the noise power estimating device is used to perform the communication with the base station according to the signal sending power, the signal receiving strength, and the inherent coefficient of the terminal The frequency band of the wireless communication estimates the noise power of the spurious radiated wave; detection means for detecting at least activation of the non-contact communication function; and control means for comparing the predetermined threshold with consideration of the parasitic The reception quality of the estimated noise power of the radiated wave is compared, and when the reception quality is equal to or less than a predetermined threshold, the communication device is controlled to reduce the transmission speed

Method used

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  • Mobile wireless communication terminal and mobile wireless communication system
  • Mobile wireless communication terminal and mobile wireless communication system
  • Mobile wireless communication terminal and mobile wireless communication system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0055] In the mobile phone system of the first embodiment of the present invention, in the case of performing wireless communication through the W-CDMA system or the cdma2000 system, when the non-contact IC card reader / writer function is activated, as follows Said, the transmission power is reduced to avoid the deterioration of the receiving sensitivity of the mobile phone terminal caused by the spurious radiation wave of the non-contact IC card reader / writer. Also, regarding the first embodiment, a mobile phone terminal equipped with a non-contact IC card reader / writer function will be exemplified.

[0056] As will be described more specifically, in the case where the mobile phone terminal of the first embodiment of the present invention performs wireless communication through the W-CDMA system and the cdma2000 system, when the non-contact IC card reader / writer function is activated, Before starting, the degree to which sensitivity deterioration occurs in the reception freque...

no. 2 example

[0096] In the first embodiment, when it is estimated that the reception sensitivity may be deteriorated due to spurious radiation waves, the mobile phone terminal reduces the transmission speed by itself, but it is also possible to reduce the transmission speed under the control of the base station as in the second embodiment below. speed. In addition, the internal structure of the mobile phone terminal of the second embodiment is basically the same as that in FIG. 1, and therefore, its description is omitted.

[0097] In the following, using the time arrow of FIG. 3 and referring to the structure of FIG. 1, in the mobile phone system of the second embodiment of the present invention, when the mobile phone terminal is busy, or is waiting in the area, the slave will activate the non-contact The instruction input of the IC card reader / writer function in the mobile phone terminal to the flow of reducing the transmission speed.

[0098] In FIGS. 1 and 3, when the line is busy or ...

no. 3 example

[0115] Next, a mobile phone system according to a third embodiment of the present invention is described.

[0116] Regarding the second embodiment described above, it is shown that information on an instruction to start the non-contact IC card reader / writer function and the value of the wireless state are transmitted from the mobile phone terminal to the base station, and the base station side uses these data to determine whether Example to reduce sending speed. However, like the third embodiment of the present invention, it is possible to transmit only information about an instruction to start the non-contact IC card reader / writer function from the mobile phone terminal to the base station, and the base station side once receives the information. Issues a command to always reduce the send rate.

[0117] Hereinafter, using the time arrow of FIG. 5, in the mobile phone system of the third embodiment of the present invention, when the mobile phone terminal is busy or is waiting...

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Abstract

Receiving sensitivity deterioration in wireless communication due to a spurious radiation wave generated from a card reader writer is suppressed, in the case where a noncontact IC card reader writer or a noncontact IC card is mounted in a cellular phone terminal. The cellular phone terminal provided with the noncontact IC card reader writer performs measurement of a wireless status upon reception (step S1) and transmission power setting (step S2), and when an instruction to start a reader writer function is inputted from a user (step S3), wireless status deterioration due to spurious radiation from the reader writer is predicted (step S4). Then, the cellular phone terminal judges whether control to reduce the transmission speed is necessary or not, based on a value of the deterioration predicted wireless status (step S5), and when judged necessary, the transmission speed is reduced (step S6).

Description

technical field [0001] The present invention relates to a mobile wireless communication terminal equipped with a noncontact communication function such as a noncontact IC card reader / writer function or a noncontact IC card function, and a mobile wireless communication system including the mobile wireless communication terminal and a base station . Background technique [0002] In recent years, so-called contactless IC cards have become increasingly popular as train ticket and prepaid cards, which have advantages of user-friendliness, excellent durability, simultaneous access to multiple cards, and easy maintenance. [0003] In the case where the non-contact IC card is close to a dedicated reader / writer connected to the network (non-contact IC card reader / writer), the reader / writer writes the data stored inside import, erase, update, etc. [0004] And, recently, it is considered to be equipped with a function of a non-contact IC card in a mobile phone terminal as an example...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04Q7/38H04W16/14H04W28/22H04W52/24H04W88/06
CPCH04W52/247H04W16/14H04W88/06H04W52/241H04B5/02H04B5/0031H04W28/22H04B5/48H04B5/72
Inventor 水泽锦长野智则
Owner SONY ERICSSON MOBILE COMM AB
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