EPC protocol improvement method for improving CRFID data transmission rate

Abstract

The invention discloses an EPC protocol improvement method for improving the CRFID data transmission rate, and belongs to the technical field of wireless radio frequency recognition. The objective ofthe invention is to improve the data transmission rate in a passive communication system, simplify the communication process of a reader and a WISP label, and improve the throughput of the system by improving the existing EPC C1G2 protocol in a media access control layer. The method specifically comprises a stage in which a reader starts to identify by using a Query command, a stage in which the reader starts to transmit data by using a Read command, and a step in which the data transmission round number R is adjusted according to the proportion of the conflict time slot number in the total number of reply time slots of a single label in the recognition stage. A large number of tags are identified in the recognition stage, and the tags do not need to be identified again in different tag data transmission stages. According to the invention, the data transmission rate in the passive communication system is improved, the communication process is simplified, and the throughput of the system is improved.

Description

technical field [0001] The invention belongs to the EPC radio frequency communication protocol technology in the technical field of radio frequency identification, and relates to an EPC protocol improvement method for increasing the CRFID data transmission rate. Background technique [0002] Radio Frequency Identification (RFID) technology, as one of the core technologies of the Internet of Things, is being widely used in various fields with the rapid development of the Internet of Things. Compared with traditional identification technology, it can complete information input and processing without contact, non-optical visibility, and non-manual intervention. It has the advantages of convenient operation, large storage capacity, good confidentiality, short response time, and environmental adaptability. Strong and other advantages, has been widely used in access control, transportation, food safety and logistics and other fields. RFID tags can store EPC codes, allowing reader...

AI Technical Summary

Problems solved by technology

Passive computable CRFID tags follow the EPC radio frequency communication protocol, and the EPC radio frequency communication protocol is applied to passive sensing platforms such as WISP, which can provide good communication energy for computable RFID tags and improve throughput, but the current CRFID tags follow the EPC C1G2 protocol, this protocol is suitable for the identification of objects, not suitable for mass transmission of data. In the standard EPC C1G2 protocol, the communication between the reader and the tag is divided into the identification stage and the data transmission stage, and different tag data is transmitted each time. Before, it had to go through a complex identification stage, which is not conducive to the mass transmission of sensor data

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