US 12,445,199 B2
Method for coordinating access points of an optical wireless network using a selected heuristic, and associated coordination device
Victor Levy, Velizy-Villacoublay (FR); and Carlos Usiel Dominguez-Gonzalez, Velizy-Villacoublay (FR)
Assigned to OLEDCOMM
Appl. No. 18/262,827
Filed by OLEDCOMM, Velizy-Villacoublay (FR)
PCT Filed Jan. 18, 2022, PCT No. PCT/IB2022/050389
§ 371(c)(1), (2) Date Jul. 25, 2023,
PCT Pub. No. WO2022/157622, PCT Pub. Date Jul. 28, 2022.
Claims priority of application No. 2100655 (FR), filed on Jan. 25, 2021.
Prior Publication US 2024/0097789 A1, Mar. 21, 2024
Int. Cl. H04B 10/114 (2013.01); H04B 10/116 (2013.01)
CPC H04B 10/1149 (2013.01) [H04B 10/116 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for coordinating at least two access points having respective coverage areas each subdivided into an exclusive sub-area supplemented by at least one interference sub-area where they overlap and forming part of an optical wireless network, said method comprising a step wherein the access points are allocated time slots of a time channel during which the access points are adapted to transmit at least to interface devices each located in at least one of their coverage areas and respectively coupled to communication devices,
wherein said step comprises, for each time channel created:
a first sub-step wherein each interface device located in an exclusive sub-area of an access point is allocated a free time slot of the latter in said time channel, then
a second sub-step wherein, as long as there remains at least one interface device located in an interference sub-area and without an allocated time slot, for each free time slot of said time channel,
a first set of interface devices compatible with the considered free time slot is determined, then
if said first set is non-empty, the considered free time slot is allocated to an interface device which it comprises and compatible with an available access point according to a chosen heuristic, or if said first set is empty, the considered free time slot is considered not to be free, then
said second sub-step is performed again if there is still a free time slot of said time channel.