发明名称 |
METHOD AND APPARATUS FOR RESTRICTING RADIO ACCESS TO A SYSTEM |
摘要 |
A first subscriber unit (SU) operating in a two-way radio frequency (RF) communications system having at least one fixed terminal, one or more channels, and a plurality of subscriber units, generates a first burst of data for transmission to the at least one fixed terminal. The first SU calculates a cyclic redundancy check (CRC) or checksum value over (i) at least a first portion of the first burst of data and (ii) at least a portion of a first private data. The first SU transmits the first burst of data and the calculated CRC/checksum value, but not the first private data, to the at least one fixed terminal. The fixed terminal then calculates its own CRC/checksum over the received burst and its own copy of the first private data, and compares the result with the received CRC/checksum. The fixed terminal authenticates the received burst if the values match. |
申请公布号 |
CA2871492(A1) |
申请公布日期 |
2013.11.07 |
申请号 |
CA20132871492 |
申请日期 |
2013.04.03 |
申请人 |
MOTOROLA SOLUTIONS, INC. |
发明人 |
PANPALIYA, SATYANARAYAN R.;BOHN, THOMAS B.;CHOWDHARY, DIPENDRA M.;WIATROWSKI, DAVID G.;ZHU, ZHIJUN;LEE, STEPHEN;ZHONG, GRACE;YANG, RUI |
分类号 |
H04L1/00;H04L9/32 |
主分类号 |
H04L1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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