A method and system to block spam SMS message (11-Apr-2008)

A method and system to block spam SMS message A method and system to block spam SMS messageA method and system to block spam SMS message

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Short Message Service (SMS) is growing rapidly over these years, more and more people start to communicate with other people through it.

     But SMS SPAM, junk message delivered to a mobile phone as text messaging through SMS, also becomes the big issue for the Telecom Carrier and the Mobile user. For example, in 2001-2002, the systems at DoCoMo (the country's major service provider) were overcome by the volume of SMS spam, causing users' screens to freeze and spreading programs that caused the phones to dial emergency numbers.

     A lot of operators are facing an increasing number of SMS problems such as Spamming, Fraud and illegal use of their SMS-C addresses. These will cause:
1. Network level:
Revenue leakage due to faked SMS traffic and SMS spoofing. Unpredictable loads on the network due to SMS flooding.

2. Service level:
Decrease customers' satisfaction if they receive illegal and trash messages. Some spam SMS will hurt mobile device

3. Fraud through broadcasting SMS.

From telecom service provider point view
There is no effective method to prevent SMS spam

     Currently, the possible solution for the telecom carrier wants to do is disabling mobile phone number if it sent excessive SMS in a constant duration. But it can not solve this SMS SPAM problem well enough, because of
The Spamor can go on using another mobile phone number to send spam SMS
Sometimes a legitimate user will be blocked in error, the complain rate will increase.

     So how to decrease the SPAM SMS but without increasing complains is a key problem for the SPAM SMS solution.

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