A transmission method for transmitting a video data stream based on Hypertext Transfer Protocol, HTTP, adaptive streaming, HAS, towards a first user equipment over a communication network at a target transmission bit rate by a communication entity, wherein the first user equipment is one of multiple user equipments using the HAS, wherein the transmission method comprises the steps of: • determining (step 801), by a first scheduling instance of the communication entity, a preliminary transmission bit rate for forwarding the video data stream towards the first user equipment, o wherein the preliminary transmission bit rate is an average transmission bit rate of the first user equipment within a time slot; • retrieving, by a second scheduling instance of the communication entity, as an input a set of video bit rates for the first user equipment from a remote database over the communication network or over another communication link; • determining (step 803), by the second scheduling instance, the target transmission bit rate upon the basis of the preliminary transmission bit rate and the set of video bit rates of the first user equipment, the set of video bit rates of the first user equipment comprising a first video bit rate and a second video bit rate, the first video bit rate being associated with a first video quality, the second video bit rate being associated with a second video quality, the first video bit rate being smaller than the second video bit rate, and • if the preliminary transmission bit rate does not exceed the first video bit rate: o selecting, by the second scheduling instance, the preliminary transmission bit rate as the target transmission bit rate; • if the preliminary transmission bit rate exceeds the first video bit rate: ∘ comparing, by the second scheduling instance, the preliminary transmission bit rate to the second video bit rate; ∘ if the second video bit rate does not exceed the preliminary transmission bit rate, selecting the second video bit rate as the target transmission bit rate; o if the second video bit rate exceeds the preliminary transmission bit rate, selecting the first video bit rate as the target transmission bit rate; • transmitting, by the communication entity, the video data stream towards the first user equipment at the determined target transmission bit rate. • determining (step 801), by a first scheduling instance of the communication entity, a preliminary transmission bit rate for forwarding the video data stream towards the first user equipment, o wherein the preliminary transmission bit rate is an average transmission bit rate of the first user equipment within a time slot; o wherein the preliminary transmission bit rate is an average transmission bit rate of the first user equipment within a time slot; • retrieving, by a second scheduling instance of the communication entity, as an input a set of video bit rates for the first user equipment from a remote database over the communication network or over another communication link; • determining (step 803), by the second scheduling instance, the target transmission bit rate upon the basis of the preliminary transmission bit rate and the set of video bit rates of the first user equipment, the set of video bit rates of the first user equipment comprising a first video bit rate and a second video bit rate, the first video bit rate being associated with a first video quality, the second video bit rate being associated with a second video quality, the first video bit rate being smaller than the second video bit rate, and • if the preliminary transmission bit rate does not exceed the first video bit rate: o selecting, by the second scheduling instance, the preliminary transmission bit rate as the target transmission bit rate; o selecting, by the second scheduling instance, the preliminary transmission bit rate as the target transmission bit rate; • if the preliminary transmission bit rate exceeds the first video bit rate: ∘ comparing, by the second scheduling instance, the preliminary transmission bit rate to the second video bit rate; ∘ if the second video bit rate does not exceed the preliminary transmission bit rate, selecting the second video bit rate as the target transmission bit rate; o if the second video bit rate exceeds the preliminary transmission bit rate, selecting the first video bit rate as the target transmission bit rate; ∘ comparing, by the second scheduling instance, the preliminary transmission bit rate to the second video bit rate; ∘ if the second video bit rate does not exceed the preliminary transmission bit rate, selecting the second video bit rate as the target transmission bit rate; o if the second video bit rate exceeds the preliminary transmission bit rate, selecting the first video bit rate as the target transmission bit rate; • transmitting, by the communication entity, the video data stream towards the first user equipment at the determined target transmission bit rate.