Method for accessing communication system and communication device

Abstract

The invention provides a method for accessing a communication system and a communication device. The method can comprise the following steps that: network equipment determines to execute M polling processes, wherein the M polling processes are used for completing access of a plurality of tags in a coverage range of the network equipment; the network equipment completes the access of the plurality of tags through the M times of polling processes, and at least two tags in the plurality of tags are accessed to a communication system through different polling processes, wherein each polling process comprises the following steps: the network equipment sends a query command; the network equipment sends an excitation signal; the network device receives a query response message from at least one label, wherein the query response message is sent by the at least one label by reflecting the excitation signal based on the query command; and the network equipment respectively sends a query response message to the at least one label. Based on the method and the device, the label which is far away from the network equipment in the coverage range of the network equipment can be successfully accessed to the communication system.

Description

technical field [0001] The present application relates to the communication field, and more specifically, relates to a method and a communication device for accessing a communication system. Background technique [0002] Currently, in a traditional backscatter communication system (such as a radio frequency identification (RFID) system), the coverage of network devices is limited, generally within 20 meters. And in the traditional backscatter communication system, when the network device sends a query command, all the tags within the coverage can receive the query command, and then can successfully access the communication system. [0003] However, with the advancement of technology, the coverage of network equipment is expanded, for example, the transmission distance is expanded from 20 meters to 100 meters or even more. In this case, there may be tags that are closer to the network device and tags that are farther away from the network device within the coverage of the ne...

AI Technical Summary

Problems solved by technology

After the network device sends the query command, the tags that are far away from the network device may not have enough energy for at least one communication process, so they cannot receive the query command sent by the network device

In the case that the query command cannot be received, the tags far away from the network equipment cannot access the communication system

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