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Mobile communication system and method based on instant messaging

A technology that maintains synchronization and repeats steps. It is applied in the field of wireless communication and can solve the problems of time-consuming and ultra-high frame number synchronization process.

Inactive Publication Date: 2006-05-03
INNOVATIVE SONIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The signaling transmission process includes signaling transmission and processing between the transmitting end and the receiving end, and additional transmission is quite time-consuming
Due to factors such as transmission delay, signal loss in wireless transmission, and retransmission timeout mechanism, the ultra-high frame number synchronization process is very time-consuming

Method used

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  • Mobile communication system and method based on instant messaging
  • Mobile communication system and method based on instant messaging
  • Mobile communication system and method based on instant messaging

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Embodiment Construction

[0076] Although the present invention is based on the standard specification formulated by the 3rd Generation Mobile Communications Alliance (3GPP), it should be noted that the present invention can also be applied to any communication system with similar architecture.

[0077] In the protocol data unit, there is no specific field used to detect whether the high frame number is synchronized. Although the length indicator field and the padding field can achieve the above purpose, they are not focused on this and are not applicable in many cases. Therefore, the technique of relying on the length indicator field to detect the out-of-sync hyperframe number cannot be applied to some PDUs that do not contain the length pointer field, and it cannot be guaranteed that the out-of-sync hyperframe number can be detected correctly. Moreover, using the hyperframe number adjusted according to the length index field technology to decrypt the protocol data unit, even if no other out-of-sync p...

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Abstract

According to the method for restoring the synchronization of the ultra-high frame number in the wireless communication system, the receiving station can restore the synchronization of the ultra-high frame number online. During the encrypted transmission of data, it can be detected that the hyperframe numbers between the transmitting station and the receiving station in the wireless communication system are not synchronized by using the specific result caused by the unsynchronized hyperframe numbers. The current value of the super high frame number of the receiving station is adjusted to generate a new value, and the new value of the super high frame number is used for decryption. The present invention can reduce the chance of data errors caused by the unsynchronized decryption parameters, and can avoid the lengthy process required to restore the synchronization of encryption and decryption parameters, such as the radio link control layer reset procedure.

Description

technical field [0001] The present invention is related to the field of wireless communication, especially related to recovering parameter synchronization in an encrypted wireless communication system to avoid serious damage to data transmission. Background technique [0002] With the advent of the information age, the demand for various mobile communications is increasing, forcing enterprises to develop increasingly sophisticated and complex communication standards. The 3rd Generation Mobile Communication Alliance (3GPP) is a communication protocol standard formulation organization that came into being. A standard formulated by the organization, numbered: 3GPP TS 33.102V6.1.0 (2004-06), titled: "Communication Security Architecture Specification", provides technical specifications related to communication security in the Global Mobile Telecommunications System (UMTS), for One of the references of the present invention. In addition, please refer to the document 3GPP TS 25.3...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04L29/06
CPCH04L7/041H04L9/12H04L63/0428H04L1/1829H04L2209/80H04J14/0227H04J14/0241H04J14/0282H04J14/0297H04Q11/0005H04Q2011/0043H04W12/033H04W12/02
Inventor 江孝祥
Owner INNOVATIVE SONIC