US 2026/0095833 A1Published application

Cellular network mobility management based on user equipment measurements

AssigneeGM Global Technology Operations LLC

InventorsSheng Liu, Chuan Li, Fan Bai, Yohay Buchbut, Scott Thomas Droste, David M. George

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Abstract

A system for cellular network mobility management based on user equipment measurements includes a host device, cellular communication cells, and a back office. The host device, cellular communication cells and back office execute a cellular network mobility management application (CMMA). The CMMA as initiated by the host device, generates control-plane measurement event based handover suggestions, generates quality-of-service (QoS) measurement based handover suggestions. Then the CMMA, via the cellular communication cells, performs cellular network signal strength monitoring and determines that a measurement configuration (MC) threshold has been achieved. Subsequently, the system performs anomaly detection; and selectively alters timing of cellular network handovers between the host device and the one or more cellular communication cells to reduce a potential for repetitive handovers from a first level to a second level less than the first level while maintaining or improving a cellular network QoS.

Claims20

Dependent claims

A system for cellular network mobility management based on user equipment measurements comprises:

a host device;
one or more cellular communication cells;
a back office;
one or more controllers, the one or more controllers disposed within the host device and within the back office, each of the one or more controllers has a processor, a memory, and input/output (I/O) ports, the processor executing programmatic control logic stored in the memory, the I/O ports in wireless communication via a cellular network with the one or more cellular communication cells and the back office, the programmatic control logic including a cellular network mobility management application (CMMA), the CMMA comprising:
a first control logic, initiated by the host device, for generating control-plane measurement event based handover suggestions;
a second control logic, initiated by the host device, for generating quality-of-service (QoS) measurement based handover suggestions;
and
a third control logic, initiated by the one or more cellular communication cells, for performing cellular network signal strength monitoring and for determining that a measurement configuration (MC) threshold has been achieved;
and
wherein outputs of the third control logic are further modified by a fourth control logic that performs anomaly detection;
and in response to outputs of the first control logic, the second control logic, the third control logic, and the anomaly detection, the system selectively alters timing of cellular network handovers between the host device and the one or more cellular communication cells to reduce a potential for repetitive handovers from a first level to a second level less than the first level while maintaining or improving a cellular network QoS.

8 more elements

A method for cellular network mobility management based on user equipment measurements comprises:

executing programmatic control logic including a cellular network mobility management application (CMMA) stored in memory of one or more controllers, the one or more controllers disposed within a host device and within a back office, each of the one or more controllers has a processor, a memory, and input/output (I/O) ports, the processor executing the programmatic control, the I/O ports in wireless communication via a cellular network with the one or more cellular communication cells and the back office, the CMMA including control logic for:
generating, by the host device, control-plane measurement event based handover suggestions;
generating, by the host device, quality-of-service (QoS) measurement based handover suggestions;
and
performing, by the one or more cells, cellular network signal strength monitoring and determining that a measurement configuration (MC) threshold has been achieved;
and
performing anomaly detection;
and selectively altering timing of cellular network handovers between the host device and the one or more cellular communication cells to reduce a potential for repetitive handovers from a first level to a second level less than the first level while maintaining or improving a cellular network QoS.

5 more elements

A method for cellular network mobility management based on user equipment measurements comprises:

executing programmatic control logic including a cellular network mobility management application (CMMA) stored in memory of one or more controllers, the one or more controllers disposed within a host device and within a back office, each of the one or more controllers has a processor, a memory, and input/output (I/O) ports, the processor executing the programmatic control, the I/O ports in wireless communication via a cellular network with the one or more cellular communication cells and the back office, the CMMA including control logic for:
generating, by the host device, measurement event based handover suggestions, including:
storing, with one or more databases of the back office, prior knowledge, the prior knowledge including historical information from the host device and from other devices communicating on the cellular network, the historical information comprising:
QoS information, cellular network signal strength information, and host device state information;
the host device state information comprising:
static and dynamic information about the host device including velocity, distance from the host device to a suggested handover location, a host device location, and a network signal strength and network condition at a current host device location;
receiving a radio resource control (RRC) message from at least one cellular communication cell of the cellular network;
generating, based on the RRC message, an original MC and transmitting the original MC to the host device;
identifying events and event thresholds relevant to identified events, the event thresholds stored in the memory;
performing control-plane event-based threshold modification utilizing the identified events and event thresholds;
determining a handover suggestion, wherein the handover suggestion comprises at least one of:
preponing a handover, postponing a handover, canceling a handover, and adding a handover;
generating a suggested MC that causes measurement report (MR) for each monitored physical cell to trigger at time ts(1), and based on the MR, initiating a handover at time ts(2), in context, t(2)=t(1)+, defines that a handover occurs at t(2) takes place shortly after t(1), where t(1) is the time at which the MR is triggered) such that:
a preponed handover is defined as:
ts(2)<to(2);
a postponed handover is defined as:
ts(2)>to(2);
a cancelled handover is defined as:
ts(1)=inf;
and adding a handover is defined as:
∃ts(2) when to(2);
generating, by the host device, quality-of-service (QoS) measurement based handover suggestions, and performing, by the one or more cells, cellular network signal strength monitoring and determining that a measurement configuration (MC) threshold has been achieved, including:
monitoring cellular network QoS, and upon determining that a predetermined QoS threshold has not been met, continuing QoS monitoring, and upon determining that the predetermined QoS threshold has been met, engaging a determinator control logic, wherein the cellular network QoS includes data throughput, end-to-end latency, jitter, and communication reliability;
monitoring cellular network signal strength as reference signal perceived power (RSRP), and upon determining that predetermined signal strength thresholds have not been met, continuing RSRP monitoring, and upon determining that the predetermined signal strength thresholds have been met, engaging the determinator control logic;
determining whether events have met MC thresholds set in an original MC, and upon determining that the MC thresholds have not been met, continuing RSRP monitoring, and upon determining that the MC thresholds have been met, triggering an MR;
incorporating a QoS metric within decision-making criteria for the MR, wherein:
advancing or preponing a handover process when QoS metrics fall below Qθ prior to RSRP decreasing enough to trigger a handover according to the MC thresholds in the original MC;
advancing or preponing the handover process when QoS metrics fall below Qmin, a portion of the control-plane events that are responsible for emergency handover are kept or created in the MC;
cancelling or postponing the handover process when QoS metrics are above Qmin, and RSRP anomalies are detected, wherein RSRP anomalies define short duration signal strength fluctuations, Qmin is a predetermined minimum QoS, and Qθ is a predetermined threshold QoS greater than Qmin;
detecting repetitive unnecessary handovers or ping-pong handovers between cells such that for a physical cell identity (PCI) at time T:
P(T),
When
⁢
∃
T
A
⁢
B
,
T
B
⁢
A
⁢
such
⁢
that
:
P
⁡
(
T
A
⁢
B
)
=
A
⁢
and
⁢
P
⁡
(
T
A
⁢
B
+
)
=
B
;
P
⁡
(
T
B
⁢
A
)
=
B
⁢
and
⁢
P
⁡
(
T
B
⁢
A
+
)
=
A
;
T
B
⁢
A
+
-
T
A
⁢
B
<
t
,
then:
Ping-Pong=True;
and
performing anomaly detection;
and selectively altering timing of cellular network handovers between the host device and the one or more cells to reduce a potential for repetitive handovers from a first level to a second level less than the first level while maintaining or improving a cellular network QoS by adjusting a location of a handover between cells upon detection of a ping-pong handover such that:
When Ping-Pong=True:
A
⁢
3
θ
:=
min
⁢
(
A
⁢
3
θ
+
(
𝓌
v
V
+
ϵ
)
⁢
(
𝓌
d
⁢
D
)
,
A
⁢
3
θ
+
Δ
max
)
,
where v=velocity, D=estimated distance to a heatmap+host device trajectory, wv=velocity weight, ϵ=small constant, wd=distance weight, Δmax=a maximum allowed modification, where wv, wd, Δmax≥0,ϵ>0.

152 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/901,312Filed 30 Sep 2024
Published: 2 Apr 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04B 17/382
Of propagation channels: for resource allocation, admission control or handover
H04W 36/249
Reselection being triggered by specific parameters: according to timing information
H04W 36/00837
Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists: determination of triggering parameters for…
H04W 36/30
Reselection being triggered by specific parameters: by measured or perceived connection quality data

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