Patent ID: 11937261
Assignee: INSTITUTE FOR INFORMATION INDUSTRY
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 5:
6. A system for dynamically switching transmission modes in unlicensed spectrum control environments (UCEs), comprising:
a user equipment (UE), communicatively connected to a next generation Node B (gNB), and performing a first configured grant (CG) transmission mode; wherein the UE is configured to:
transmit a new data to the gNB, and determine whether a dynamic grant (DG) signal transmitted by the gNB is received;
when the DG signal is received, start a CG timer, increase a count value of a CG counter, reset a successful transmission count value of a successful transmission counter, calculate a CG weight according to a timing value of the CG timer and the count value, and determine whether the CG weight is greater than or equal to a CG threshold;
when the CG weight is greater than or equal to the CG threshold, switch from the first CG transmission mode to a second CG transmission mode;
when the CG weight is smaller than the CG threshold, transmit a retransmission data to the gNB;
wherein the CG weight is calculated by the following formula:

W1=a1×timer1+b1×counter1;

timer1=timer_current/timer_max;

counter1=counter_current/counter_max;

wherein W1 is the CG weight, a1 is a time weight, b1 is a count weight, timer_current is the timing value, timer_max is a preset maximum of waiting time, counter_current is the count value, counter_max is a maximum number of preset allowable failures, and a1+b1=1;
wherein the CG threshold is calculated by the following formula:

TH1=MAX[a1,b1];

wherein TH1 is the CG threshold.