US 2026/0292531 A1Published application

Mobility-aware beamsweeping

AssigneeT-Mobile USA, Inc.

InventorAl Duy Bui

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Abstract

Optimizing beamsweeping in wireless telecommunications networks for user equipment (UE) mobility reduces re-attachment latency and enhances overall network efficiency. Solutions disclosed herein configure beamsweeping operations to account for expected or predicted UE movement patterns within a network cell. A system can observe UE movement patterns through beam attachment sequences and can determine frequencies or expectancy scores for different patterns/sequences. Then, the system can improve a re-attachment beamsweeping for a UE currently attached to a given beam. The re-attachment beamsweeping can be configured based on an expectation that the UE will likely attach to a particular beam subsequent to its attachment to the given beam, based on the observed movement patterns. In an example, the re-attachment beamsweeping can begin from that particular beam or transmit the certain beam for a particular duration, thus facilitating an improved re-attachment process for the UE and improved transmission efficiency for the network node.

Claims20

Dependent claims

A system for improving beamsweeping in a wireless telecommunications network, the system comprising:

at least one processor;
and
at least one memory storing instructions that, when executed by the at least one processor, cause the system to implement operations comprising:
at a network node providing a network cell in which at least one geographic feature that biases movement of wireless devices through the network cell is located, implementing a first beamsweeping configuration that defines parameters for the network node transmitting a plurality of reference signal beams across the network cell,
wherein the parameters include an angle range and a transmission duration for each of the plurality of reference signal beams and a transmission sequence of the plurality of reference signal beams;
causing the network node to transmit the plurality of reference signal beams across the network cell according to the first beamsweeping configuration for a first time period,
wherein the network node serves at least one first wireless device based on transmitting the plurality of reference signal beams for attachment by the at least one first wireless device during the first time period;
generating or updating a data model configured to identify different possible patterns of the plurality of reference signal beams for serving a given wireless device over a course of the given wireless device traversing the network cell,
wherein the data model is generated or updated to associate respective observation frequencies with the different possible patterns according to the attachment by the at least one first wireless device to the plurality of reference signal beams during the first time period,
wherein at least one of the different possible patterns corresponds to the movement of wireless devices through the network cell that is biased by the at least one geographic feature;
determining a second beamsweeping configuration based on modifying at least one of the parameters of the first beamsweeping configuration according to the respective observation frequencies included in the data model;
and
causing the network node to perform transmission of the plurality of reference signal beams according to the second beamsweeping configuration for a second wireless device that is moving through the network cell,
wherein a re-attachment latency of the second wireless device is reduced based on the second beamsweeping configuration predicting a movement of the second wireless device being biased based on the respective observation frequencies included in the data model.

11 more elements

A method for improving beamsweeping in a wireless telecommunications network, comprising:

generating a data model configured to identify possible beam sequences of a plurality of beams for serving a given wireless device that is moving across a network cell provided by a network node,
wherein the network cell encompasses at least one geographic feature that biases movement of wireless devices through the network cell;
wherein at least one of the possible beam sequences corresponds to the movement of wireless devices through the network cell that is biased by the at least one geographic feature;
updating the data model with respective observation frequencies associated with the possible beam sequences based on attachments by at least one first wireless device to the plurality of beams being transmitted by the network node during a first time period,
wherein the network node transmits the plurality of beams during the first time period according to a first beamsweeping configuration;
determining a second beamsweeping configuration based on the respective observation frequencies included in the data model;
and
for a second wireless device being served by the network node subsequent to the first time period, causing the network node to perform a transmission of the plurality of beams according to the second beamsweeping configuration,
wherein a re-attachment latency of the second wireless device is reduced based on the second beamsweeping configuration predicting a movement of the second wireless device being biased based on the respective observation frequencies included in the data model.

6 more elements

At least one non-transitory computer-readable medium storing instructions that, when executed by at least one processor, cause the at least one processor to perform operations comprising:

generating a data model configured to identify possible beam sequences of a plurality of beams for serving a given wireless device that is moving across a network cell provided by a network node,
wherein the network cell encompasses at least one geographic feature that biases movement of wireless devices through the network cell;
wherein at least one of the possible beam sequences corresponds to the movement of wireless devices through the network cell that is biased by the at least one geographic feature;
updating the data model with respective observation frequencies associated with the possible beam sequences based on attachments by at least one first wireless device to the plurality of beams being transmitted by the network node during a first time period,
wherein the network node transmits the plurality of beams during the first time period according to a first beamsweeping configuration;
determining a second beamsweeping configuration based on the respective observation frequencies included in the data model;
and
for a second wireless device being served by the network node subsequent to the first time period, causing the network node to perform a transmission of the plurality of beams according to the second beamsweeping configuration,
wherein a re-attachment latency of the second wireless device is reduced based on the second beamsweeping configuration predicting a movement of the second wireless device being biased based on the respective observation frequencies included in the data model.

6 more elements

Dependencies are inferred from the claim text.