Method for measuring channel state information of multiple transmission/reception modes in a wireless network comprising a plurality of nodes, said transmission/reception modes being defined by frequency channels and/or antenna patterns, said wireless network comprising a MAC layer and each node comprising at least one MAC queue, comprising the steps of: - periodically receiving broadcast probe packets by at least one node called receiving node (v) from at least one node, called a transmitter node (u), using a pre-determined and globally known period and a predetermined and globally known sequence of transmission modes, each of said probe packets containing: - (i) the transmission mode used for its transmission; - (ii) a sequence number of the transmission mode in the pre-determined sequence of transmission modes; and - (iii) a timestamp value containing the time at which said broadcast probe packet was buffered at the MAC queue of the transmitter node (u); - measuring, by the receiving node (v), channel state information of a transmission/reception mode for a link connecting the transmitter node (u) and the receiving node (v); - storing, by said receiving node (v), said measured transmission/reception mode for said link; - using information contained in said received broadcast probe packet, by said receiving node (v), to determine: - (i) the reception mode of said receiving node (v); and - (ii) the time during which said receiving node (v) will use said reception mode in order to receive a further broadcast probe packet from said transmitter node (u) during a next measurement period of said transmitter node (u). - periodically receiving broadcast probe packets by at least one node called receiving node (v) from at least one node, called a transmitter node (u), using a pre-determined and globally known period and a predetermined and globally known sequence of transmission modes, each of said probe packets containing: - (i) the transmission mode used for its transmission; - (ii) a sequence number of the transmission mode in the pre-determined sequence of transmission modes; and - (iii) a timestamp value containing the time at which said broadcast probe packet was buffered at the MAC queue of the transmitter node (u); - (i) the transmission mode used for its transmission; - (ii) a sequence number of the transmission mode in the pre-determined sequence of transmission modes; and - (iii) a timestamp value containing the time at which said broadcast probe packet was buffered at the MAC queue of the transmitter node (u); - measuring, by the receiving node (v), channel state information of a transmission/reception mode for a link connecting the transmitter node (u) and the receiving node (v); - storing, by said receiving node (v), said measured transmission/reception mode for said link; - using information contained in said received broadcast probe packet, by said receiving node (v), to determine: - (i) the reception mode of said receiving node (v); and - (ii) the time during which said receiving node (v) will use said reception mode in order to receive a further broadcast probe packet from said transmitter node (u) during a next measurement period of said transmitter node (u). - (i) the reception mode of said receiving node (v); and - (ii) the time during which said receiving node (v) will use said reception mode in order to receive a further broadcast probe packet from said transmitter node (u) during a next measurement period of said transmitter node (u).