BS ISO/IEC 29143:2011 pdf download.Information technology -Automatic identification and data capture techniques —Air interface specification for Mobile RFID interrogators.
Due to the lack of a dedicated control channel for Mobile RFID interrogators no explicit synchronization of two or more interrogators can be established. Additionally, Implicit synchronization as achieved by applying Carrier Sensing or Listen Before Talk is basically nof applicable to mobile applications due to the lack of suitable listen thresholds. In general, key figures like the number of active mobile devices at a certain location and the specific local arrangement, e.g. distance to the tagged obØct(s), possible movement of the involved entities and direction of the anterlna5 are not known Ni advance. Mobile RFID applications are likely to be more complex and less predictable than fixed applications which results an a demand for additional collision avoidance and collision arbitration mechanisms aimed especially on the requirements of Mobile RFID scenarios.
In contrast to fixed RFID applications, where only Tag on Tag collisions have to be resolved by the anti- collision mechanism of the air interlace specification, three different types of collisions need to be addressed for Mobile RFID scenarios. Please refer to Annex A for a detailed overview about possible communication errors in Mobile RFID environments.
In contrast to fixed RFID applications, where only Tag on Tag collisions have to be resolved by the anti- collision mechanism of the air interlace specification, three different types of collisions need to be addressed for Mobile RFID scenarios. Please refer to Annex A for a detailed overview about possible communication errors in Mobile RFID environments.
