Method and managing device for allocating transmission resources in a wireless communications network

A method for allocating transmission resources in a wireless communications network for performing K individual transmissions between an access point and plural mobile terminals, the transmissions occurring in the wireless communications network on a per frame basis, the method being performed by a managing device in charge of allocating the transmission resources for performing the K individual transmissions, signalling information intended to enable the mobile terminals to determine transmission resources that are allocated in a subsequent frame being transmitted in at least one transmission resource of each frame,

• wherein, for each one of the K individual transmissions, the managing device has information representative of a signal-plus-interference to noise ratio expected for each transmission resource when used by said individual transmissions, and the managing device has information representative of a signal-plus-interference to noise ratio expected for each transmission resource when said transmission resource is used for transmitting the signalling information,
• characterized in that the managing device performs, when considering allocating transmission resources for the K individual transmissions in a frame identified by an index value t:
• obtaining information representative of the transmission resources allocated beforehand from the frame identified by the index value t−W−T+2 to the frame identified by the index value t−1, wherein W≥1 is a first predefined quantity of successive frames and T≥1 is a second predefined quantity of successive frames;
• allocating transmission resources in the frame identified by the index value t for performing the K individual transmissions and transmission resources in the frame identified by an index value t−x for transmitting the signalling information related to the frame identified by the index value t, by reviewing transmission resources allocations from the frame identified by the index value t−W+1 to the frame identified by the index value t−1 for maximizing the following expression:
• min
• 0
• ≤
• u
• <
• W
• 
• (
• P
• 
• (
• t
• -
• u
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• wherein x≥1 represents a difference in terms of quantity of frames between the frame identified by the index value t and the preceding frame in which is transmitted the signalling information related to the frame identified by the index value t, and wherein W≥x, and
• wherein P(t−u) is a figure of merit representative of a probability that at least one message in each one of the K individual transmissions is correctly received between the frame identified by the index value t−u−T+1 and the frame identified by the index value t−u in view of the signal-plus-interference to noise ratio;
• thenand
• enabling transmission of the frame identified by the index value t−W−x+1.