High-frequency and ultrahigh-frequency double-interface SIM (subscriber identity module) card and radio-frequency identification system

Abstract

The invention discloses a high-frequency and ultrahigh-frequency double-interface SIM (subscriber identity module) card and a radio-frequency identification system for mobile payment. The SIM card comprises an SIM card chip, an ultrahigh-frequency antenna, an ultrahigh-frequency read/write chip, a high-frequency antenna and an high-frequency read/write chip, wherein the SIM card chip is connected with the high-frequency read/write chip; the high-frequency read/write chip receives a high-frequency signal sent by a reader through the high-frequency antenna, demodulates the signal and sends the demodulated signal to the SIM card chip. The radio-frequency identification system disclosed by the invention realizes non-contact short-distance radio-frequency identification of the mobile phone by use of the high-frequency and ultrahigh-frequency double-interface SIM card and without replacing a new mobile phone, and avoids misoperation on the other high-frequency and ultrahigh-frequency double-interface SIM cards around.

Description

technical field [0001] The invention relates to mobile payment technology, in particular to a high-frequency ultra-high frequency dual-interface SIM card and a radio frequency identification system for mobile payment. Background technique [0002] The mobile payment industry is an industry with broad application prospects, especially after nearly 30 years of rapid development, mobile communication has almost become a must-have portable device for consumers, with a very high penetration rate, and more mobile terminals are integrated Functional trends. It is an existing mature technology to make payment using the mobile communication network of the mobile phone itself, such as GSM and CDMA. However, it is the current development direction of radio frequency identification to effectively combine mobile phones and electronic tags to make mobile phones as convenient as bus cards. It is a market that operators and mobile operators are currently vigorously developing. At present,...

AI Technical Summary

Problems solved by technology

But the disadvantages of these two solutions are: the antenna is pasted on the surface of the SIM card or drawn out to the front or back of the mobile phone, which will easily cause the antenna to break and damage during the installation process, and cause inconvenience to the user. Shielding effect, the dual-interface SIM card can receive the signal from the reader and the signal reflected to the reader is very weak, the quality of communication between the dual-interface SIM card and the reader will be very poor, and the reader can hardly receive the dual-interface SIM Response returned by the card

But this method has the following disadvantages: due to the different shielding effects of the batteries and circuit boards of various mobile phones, the attenuation of the UHF signal entering the dual-interface SIM card is also different, so that under the condition that the reader sends out exactly the same signal, If the same dual-interface SIM card is placed in different mobile phones, the communication and transaction distances are very different, so there is a great risk of misuse

At present, there are some methods to enable the reader (radio frequency card reader) to control the distance of operating the dual-interface SIM card in the mobile phone. The method and communication system described in) is achieved by adding a tag, but the biggest problem with this method is that it needs to add an additional high-frequency electronic tag to cooperate with determining the distance of the mobile communication device, and the second is to ignore the wireless payment transaction process. The high security requirements of the high security requirements, only extracting the RF communication address of the SIM card from the data information in the label will not be able to ensure the legal identity of the three parties (reader, label and SIM card) and the reliable and safe conduct of the transaction; another problem is that all The above-mentioned mobile payment communication system cannot achieve the compatible use of various electronic tags such as high-frequency tags, ultra-high-frequency electronic tags, mobile communication terminals with tags and SIM cards in the original system on one reader.

Images