Invention Grant
US09000891B2 Radio frequency identification readers, methods and computer program products for adjusting a query command slot-counter parameter Q
有权
射频识别读取器，方法和计算机程序产品，用于调整查询命令时隙计数器参数Q
- Patent Title: Radio frequency identification readers, methods and computer program products for adjusting a query command slot-counter parameter Q
- Patent Title (中): 射频识别读取器，方法和计算机程序产品，用于调整查询命令时隙计数器参数Q
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Application No.: US12323996Application Date: 2008-11-26
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Publication No.: US09000891B2Publication Date: 2015-04-07
- Inventor: Mahmoud Daneshmand , Chonggang Wang
- Applicant: Mahmoud Daneshmand , Chonggang Wang
- Applicant Address: US GA Atlanta
- Assignee: AT&T Intellectual Property I, L.P.
- Current Assignee: AT&T Intellectual Property I, L.P.
- Current Assignee Address: US GA Atlanta
- Main IPC: G06K7/08
- IPC: G06K7/08 ; H04Q9/00 ; G06K7/00 ; G06K7/10 ; H04W74/08
Abstract:
RFID readers and methods for adjusting a query command slot-count parameter Q for use by radio frequency identification (RFID) tag reader in an RFID tag inventory round are provided. A method for adjusting a query command slot-count parameter Q for use by an RFID tag reader includes setting an initial value for Q for a first inventory round, issuing a query command to a population of RFID tags, and monitoring replies from the population of RFID tags. The value of Q is decreased by a first amount if no reply is received, and the value of Q is increased by a second amount different from the first amount if a tag collision reply is received.
Public/Granted literature
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