Charter Communications has filed a patent for a method to manage interference on control channels using shared spectrum. The method involves a base station monitoring multiple control channels, measuring received signal strength energy for each channel-beam combination, and determining an average RSSI value for each candidate control channel. The method also includes applying RSSI based exclusion criteria to remove certain channels from consideration and selecting a control channel with the lowest average RSSI for transmitting control information. GlobalData’s report on Charter Communications gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Charter Communications, Wireless sensing nodes was a key innovation area identified from patents. Charter Communications's grant share as of September 2023 was 74%. Grant share is based on the ratio of number of grants to total number of patents.

Interference management for control channels using shared spectrum

Source: United States Patent and Trademark Office (USPTO). Credit: Charter Communications Inc

A recently filed patent (Publication Number: US20230319798A1) describes a communications method for selecting a control channel for transmitting control signals. The method involves performing received signal strength indicator (RSSI) measurements for beams corresponding to multiple control channels. The RSSI measurements include measuring the RSSI for beams of a first control channel and a second control channel.

The method then generates an average control channel RSSI value for each individual control channel under consideration for selection. This is done by calculating the average RSSI value from the RSSI values of individual beams. The method also applies one or more RSSI based channel exclusion criteria. Any control channels that satisfy the exclusion criteria are excluded from further consideration for selection.

From the remaining channels, the method selects a control channel to be used for communication of control signals. The selection is based on identifying a set of one or more control channels with the lowest average channel RSSI value. If there is only one control channel in the set, it is selected as the control channel. If there are multiple control channels in the set, the method selects the lowest numbered control channel.

The patent also describes a base station that implements the communications method. The base station includes a wireless receiver, multiple antennas or antenna elements, and a processor. The processor operates the base station to perform RSSI measurements for beams corresponding to multiple control channels, generate average control channel RSSI values, apply RSSI based channel exclusion criteria, exclude control channels that satisfy the exclusion criteria, and select a control channel for communication of control signals.

Additionally, the patent includes a non-transitory computer-readable medium with machine-executable instructions that, when executed by a processor of a base station, cause the base station to perform the steps of the communications method.

Overall, this patent presents a method and system for selecting a control channel based on RSSI measurements and exclusion criteria, which can improve the efficiency and reliability of communication systems.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.