Sigfox has been granted a patent for a method to transmit messages to a group of terminals via an access network. The network evaluates a broadcast retransmission criterion to decide whether to retransmit over a broadcast channel or a point-to-point link based on specific parameters. GlobalData’s report on Sigfox gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Sigfox, was a key innovation area identified from patents.

Method for message retransmission in wireless communication system

Source: United States Patent and Trademark Office (USPTO). Credit: Sigfox SA

A recently granted patent (Publication Number: US11855779B2) discloses a method for transmitting messages by an access network in a wireless communication system to a group of terminals. The method involves transmitting messages over a broadcast channel, receiving requests for retransmission from terminals that did not correctly receive the message, evaluating a predetermined broadcast retransmission criterion, and retransmitting the message either over the broadcast channel or a point-to-point link based on the criterion. The criterion is determined by parameters such as the number of messages to be retransmitted, total message size, and the capacity of broadcast channels available.

Furthermore, the patent includes details on when the broadcast retransmission criterion is considered verified, such as when multiple requests for retransmission are received, or when the total number and size of messages to be retransmitted exceed a threshold value. The method also involves transmitting responses to terminals requesting retransmission, providing information on the broadcast channel for retransmission. Additionally, the patent covers an access network for a wireless communication system with base stations configured to exchange messages with terminals, following the same retransmission process based on the predetermined broadcast retransmission criterion and parameters like message quantity, size, and broadcast channel capacity.

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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.