Sequans Communications has developed a method for an interference imbalance manager (IIM) that optimizes noise and interference power estimates in wireless communication systems. The method adjusts power contributions from colliding cells to enhance signal quality. This innovation aims to improve network performance and reliability. GlobalData’s report on Sequans Communications gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Sequans Communications, IoT-5G convergence was a key innovation area identified from patents. Sequans Communications's grant share as of April 2024 was 65%. Grant share is based on the ratio of number of grants to total number of patents.
Interference imbalance manager method for adjusting noise and interference
A recently granted patent (Publication Number: US11917667B2) discloses a method for an interference imbalance manager (IIM) that aims to efficiently manage interference in wireless communication systems. The method involves an outer loop that iterates over subcarrier sets and an inner loop that goes over dominant intra-frequency cells. For each subcarrier set, the noise plus interference power estimate is initialized, and adjustments are made based on collisions between cell pilots and subcarrier sets. When collisions occur, interference plus noise levels are adjusted by removing power contributions from the interfering cell. The program loops over all considered cells and provides adjusted outputs once all adjustments are complete.
Furthermore, the method includes steps for resetting counters, adding back removed interference power, and checking for pilot collisions. The algorithm ensures that interference levels are appropriately managed by adjusting noise plus interference estimates based on pilot collisions. The method also involves specific conditions for LTE systems, such as checking for specific frequency positions of cell pilots. By efficiently managing interference through iterative adjustments, the algorithm aims to optimize the performance of wireless communication systems by reducing interference levels and improving overall network quality.
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