Comba Telecom Systems has been granted a patent for a distributed antenna system that utilizes digital-analog expansion units and remote cascade chains to increase transmission bandwidth and decrease costs. The system supports multi-mode, multi-band, and cell splitting, making it easy to expand with low construction difficulty. GlobalData’s report on Comba Telecom Systems 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 Comba Telecom Systems, VPN tunneling was a key innovation area identified from patents. Comba Telecom Systems's grant share as of February 2024 was 41%. Grant share is based on the ratio of number of grants to total number of patents.
Patent granted for distributed antenna system with digital-analog expansion
A recently granted patent (Publication Number: US11923905B2) discloses a distributed antenna system comprising at least two digital-analog expansion units and remote cascade chains. Each digital-analog expansion unit is connected to a remote cascade chain, with each chain consisting of multiple remote units connected by radio frequency cables. The system allows for baseband processing of digital radio frequency signals and digital-to-analog conversion for downlink transmission, as well as analog-to-digital conversion for uplink transmission. The remote units interact with terminal devices and perform analog radio frequency signal interactions through the radio frequency cable. The system also includes monitoring circuits, power supply circuits, and couplers for signal processing and interaction between components.
Furthermore, the patent details a signal transmission method within the distributed antenna system, involving baseband processing, digital-to-analog conversion, and analog-to-digital conversion for signal transmission between digital-analog expansion units and remote units. The method includes cascading digital-analog expansion units through optical fibers, combining multi-channel signals, and transparently transmitting framed digital radio frequency signals. Additionally, a gain control method and apparatus are disclosed for optimizing signal transmission by measuring power values, determining cable lengths, and adjusting attenuation values for digital control attenuators. These innovative technologies aim to enhance the efficiency and performance of distributed antenna systems in telecommunications networks.
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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.
