Deutsche Telekom has been granted a patent for methods, media, and systems that restrict the assignment of an uplink Multiple Input Multiple Output (MIMO) in an mmWave system. The restriction is based on fading, battery data, or location data of the user device. The system includes nodes that wirelessly communicate with user devices and processors that receive fading data and determine if the fading level satisfies a threshold, restricting the assignment accordingly. GlobalData’s report on Deutsche Telekom gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Deutsche Telekom, Payment actuated vending was a key innovation area identified from patents. Deutsche Telekom's grant share as of September 2023 was 66%. Grant share is based on the ratio of number of grants to total number of patents.
Restricting uplink mimo assignment based on fading level

A recently granted patent (Publication Number: US11777559B2) describes a system for restricting the assignment of uplink Multiple Input Multiple Output (MIMO) in wireless communication networks. The system includes one or more nodes that wirelessly communicate with user devices using millimeter wave (mmWave) technology. The system utilizes fading data received from user devices to determine if the fading level of a user device satisfies a threshold. If the threshold is met, the system restricts the assignment of the user device to a specific MIMO layer.
The fading data used to determine the threshold can include signal echo time delay based on a received echo response message. Additionally, fading measurements from another device using an mmWave fading measurement model can be used to determine the threshold. The distance between the mmWave node and the user device can also be considered in determining the threshold.
Once the threshold is determined to be satisfied, the system assigns the user device to one of the available MIMO layers. The assigned MIMO layer is typically a lower layer than the one being restricted. For example, a 2x2 MIMO layer may be assigned instead of a 4x4 MIMO layer.
The patent also describes a method for restricting MIMO assignment using fading data from multiple user devices within a geographic service area. The method determines if a portion of the service area satisfies the fading threshold based on the fading data. If the threshold is met, the assignment of multiple user devices to a MIMO layer is restricted.
The determination of the threshold can be based on factors such as the input and output power capability of each user device, location data of the user devices, large-scale fading coefficients, and Reference Signal Received Power fluctuation measurements over time.
In another method described in the patent, the assignment of a user device to a MIMO layer is based on the fading data not satisfying the threshold. The user device is then assigned to a MIMO layer that is higher than the available MIMO layers, which include both higher and lower layers.
The fading data used in this method includes fading amplitude and first-order fading statistic values. The determination of the threshold is based on applying a Rayleigh model to mmWave fading data, as well as considering the maximum Doppler frequency and fading data from mm Waves transmitted by an indoor 5G small cell.
Overall, this patent presents a system and methods for efficiently assigning MIMO layers in wireless communication networks based on fading data and predetermined thresholds.
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