Detection of ciphering parameter unsynchronization in a RLC entity
First Claim
1. A method for fast detecting an out of ciphering parameter synchronization of a communication linkage between stations in a ciphering-deciphering wireless communication system, having data transmitted in package format with a plurality of data fields, the receiving station (the receiver), receiving data packages sent by the sending station (the sender), using an error counter to track the number of the erroneous data packages received and an error result derived from the value of the error counter, wherein the method comprising:
- the receiver receiving the data package from the sender;
the receiver verifying the content of the data fields of received data package and discarding the received data package if discrepancy existing;
the receiver adjusting the error counter and the error result based on the verification of each received data package;
if the error result exceeded a predetermined value, the receiver invoking a process to synchronize the communication link, starting a new cycle of checking and initiating the error counter.
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Accused Products
Abstract
This invention is a method and a system to improve the detection of an out of ciphering parameter synchronization of a communication linkage in a ciphering-deciphering wireless communication system. The sender fills the unused data fields of a data package before sending, and the receiver verifies the content of data fields and the particular pattern of the unused data field of a received data package for discrepancy. If the accumulated error count of the receiver exceeds a predetermined threshold, the receiver will invoke a resynchronization of this communication link between the sender and the receiver.
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Citations
22 Claims
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1. A method for fast detecting an out of ciphering parameter synchronization of a communication linkage between stations in a ciphering-deciphering wireless communication system, having data transmitted in package format with a plurality of data fields, the receiving station (the receiver), receiving data packages sent by the sending station (the sender), using an error counter to track the number of the erroneous data packages received and an error result derived from the value of the error counter, wherein the method comprising:
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the receiver receiving the data package from the sender;
the receiver verifying the content of the data fields of received data package and discarding the received data package if discrepancy existing;
the receiver adjusting the error counter and the error result based on the verification of each received data package;
if the error result exceeded a predetermined value, the receiver invoking a process to synchronize the communication link, starting a new cycle of checking and initiating the error counter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system having means for fast detecting an out of ciphering parameter synchronization of a communication linkage between stations in a ciphering-deciphering wireless communication system, having data transmitted in package format with a plurality of data fields, the receiving station (the receiver), receiving data packages sent by the sending station (the sender), using an error data counter to track the number of the erroneous data packages received and an error result derived from the value of the error counter, wherein the receiver comprising:
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means for receiving the data package from the sender;
means for verifying the content of the data fields of received data package;
means for discarding the receiving data package if discrepancy existing;
means for adjusting the error counter and the error result based on the verification of each received data package;
means for invoking a process to resynchronize the communication link, if the error result exceeded a predetermined value. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification