US 2023/0145818 A1Published application

Method and system for dynamically switching transmission modes to increase reliability in unlicensed controlled environments

AssigneeInstitute for Information Industry

InventorKun-Hung LEE

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Abstract

The present disclosure is a method and a system for dynamically switching transmission modes to increase reliability in unlicensed controlled environments (UCEs). The system includes a user equipment (UE) to execute the method. When a next generation Node B (gNB) cannot successfully receive or decode data transmitted by the UE, the UE will receive a dynamic grant (DG) signal transmitted by the gNB. When the UE can receive the DG signal, the UE will start a configured grant (CG) timer and count a CG counter, and the UE will calculate a CG weight. The UE determines communication quality between the UE and the gNB according to the CG weight. When the CG weight is greater than a CG threshold, the UE determines communication quality is bad, and switches to a CG transmission mode to increase reliability for transmitting the data. Therefore, spectrum usage efficiency in the UCEs can be improved.

Claims10

Dependent claims

A method for dynamically switching transmission modes in unlicensed spectrum control environments (UCEs), executed by a user equipment (UE);

wherein the UE performs a first configured grant (CG) transmission mode, and the method comprises steps of:
transmitting a new data to a next generation Node B (gNB);
determining whether a dynamic grant (DG) signal transmitted by the gNB is received;
when the DG signal is received, starting a CG timer, increasing a count value of a CG counter, resetting a successful transmission count value of a successful transmission counter, calculating a CG weight according to a timing value of the CG timer and the count value, and determining 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, switching from the first CG transmission mode to a second CG transmission mode;
when the CG weight is smaller than the CG threshold, transmitting a retransmission data to the gNB;
wherein the CG weight is calculated by the following formula:
W
1
=
a
1
×
t
i
m
e
r
1
+
b
1
×
c
o
u
n
t
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r
1
;
t
i
m
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r
1
=
t
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m
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r
_
c
u
r
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n
t
t
i
m
e
r
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max
;
c
o
u
n
t
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1
=
c
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u
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r
_
c
u
r
r
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n
t
c
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max
;
wherein W1 is the CG weight, α1 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:
wherein TH1 is the CG threshold.

94 more elements

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:
W
1
=
a
1
×
t
i
m
e
r
1
+
b
1
×
c
o
u
n
t
e
r
1
;
t
i
m
e
r
1
=
t
i
m
e
r
_
c
u
r
r
e
n
t
t
i
m
e
r
_
max
;
c
o
u
n
t
e
r
1
=
c
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u
n
t
e
r
_
c
u
r
r
e
n
t
c
o
u
n
t
e
r
_
max
;
wherein W1 is the CG weight, α1 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 α1 + b1 = 1;
wherein the CG threshold is calculated by the following formula:
wherein TH1 is the CG threshold.

94 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/535,819Filed 26 Nov 2021
Priority: TW 11014173710 Nov 2021
Published: 11 May 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04L 1/188
Arrangements specially adapted for the transmitter end: time-out mechanisms
H04W 72/23
Control channels or signalling for resource management: in the downlink direction of a wireless link, i.e. towards a terminal
H04W 16/14
Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures: spectrum sharing…
Y02D 30/70
Reducing energy consumption in communication networks: in wireless communication networks