A wireless telecommunications network method and wireless telecommunications network node are disclosed. The method comprises providing a plurality of codebooks, each codebook identifying a phase shift to be applied to each signal to be transmitted by each of a plurality of antenna elements arranged in a plurality of pairs, each pair of antenna elements being spaced apart by a distance greater than a half wavelength of a carrier frequency, each codebook identifying a phase shift to be applied to each signal to generate a plurality of beams, each of which has a different angle of departure. In this way, a codebook is provided which enables different beams to be generated concurrently, each with a different angle of departure. This enables the channel conditions at the receiver to be improved using these different codebooks since beams are generated with the different angles of departure in order to better suit the different conditions experienced by the different beams.