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| Notations | Meaning and explanation |
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| Number of collision slots |
| Number of empty slots |
| Number of success slots |
| Probability of occurrence under the condition |
| Number of tags participate in one frame |
| Duration of success slot |
| Duration of empty slot |
| Duration of collision slot |
| The system efficiency of one frame |
| The system efficiency of the first n frame |
| Number of success slots in the i-th frame |
| Frame length of the i-th frame |
| The i-th frame |
| Tag identification process |
| Number of unidentified tags in the i-th frame |
| Number of new arrival tags in the i-th frame |
| Arrival rate of the i-th frame |
| The j-th slot in the i-th frame |
| Number of success slots after j-th slot |
| Number of collision slots after j-th slot |
| Number of empty slots after j-th slot |
| Time after j-th slot in the i-th frame |
| Number of new arrival tags after j-th slot in the i-th frame |
| SIDt | Tag random slot number |
| SIDc | The current slot number of one tag |
| SIDw | The maximum slot number that can be selected by the waiting tag |
| SIDl | The minimum slot number that can be selected by the new arrival tag |
| Number of unidentified tags in the i-th frame |
| Number of new arrival tags in the i-th frame |
| RN16 | 16-bit random number |
| EPC | 96-bit electronic product code |
| Ack | The Ack instruction |
| IndicateWait | The IndicateWait instruction |
| IndicateArrival | The IndicateArrival instruction |
| Indicate | The IndicateWait or IndicateArrival instruction |
| Start | The Start instruction |
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