US 11,855,779 B2
Method for transmitting a message over a broadcast channel with retransmission over a point-to-point link
Arnaud Mansuy, Toulouse (FR); and Juan Carlos Zuniga, Montreal (CA)
Assigned to SIGFOX, Labege (FR)
Appl. No. 17/601,059
Filed by SIGFOX, Labege (FR)
PCT Filed Apr. 16, 2020, PCT No. PCT/EP2020/060703
§ 371(c)(1), (2) Date Oct. 2, 2021,
PCT Pub. No. WO2020/212486, PCT Pub. Date Oct. 22, 2020.
Claims priority of application No. 19 04161 (FR), filed on Apr. 18, 2019.
Prior Publication US 2022/0173835 A1, Jun. 2, 2022
Int. Cl. H04L 1/08 (2006.01); H04H 20/16 (2008.01)
CPC H04L 1/08 (2013.01) [H04H 20/16 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for transmitting a message by an access network from a wireless communication system to a group of terminals, comprising:
transmitting, by the access network, at least one message to a group of terminals over a broadcast channel;
receiving, by the access network, a request for retransmission of said at least one message transmitted from a terminal that has not correctly received said at least one message;
evaluating, by the access network, a predetermined broadcast retransmission criterion;
when the predetermined broadcast retransmission criterion is verified: retransmitting said at least one message, by the access network, over the broadcast channel to the group of terminals including the terminal requesting retransmission of said at least one message;
when the predetermined broadcast retransmission criterion is not verified: retransmitting said at least one message, by the access network, over a point-to-point link to the terminal requesting retransmission of said at least one message; and
wherein the predetermined broadcast retransmission criterion is evaluated based on at least one of the following parameters:
a number of messages to be retransmitted to one or more terminals of the group;
a total size of the messages to be retransmitted to one or more terminals of the group; and
a capacity of broadcast channels planned by the access network.