Abstract: Methods and arrangements (600) in a network node (110), for scrambling a timing advance value, to be received by a mobile station (120). The method comprises receiving (501) a signal from the mobile station (120), estimating (504) the timing advance value for the mobile station (120), determining (505) an offset value to be added to the estimated timing advance value, computing (506) a scrambled timing advance value by adding the determined offset value to the estimated timing advance value, and transmitting (507) the scrambled timing advance value, to be received by the mobile station (120). Also, methods and arrangements (800) in a mobile station (120), and methods and arrangements (1000) in a database (140) are disclosed.

Abstract: Methods and arrangements (600) in a network node (110), for scrambling a timing advance value, to be received by a mobile station (120). The method comprises receiving (501) a signal from the mobile station (120), estimating (504) the timing advance value for the mobile station (120), determining (505) an offset value to be added to the estimated timing advance value, computing (506) a scrambled timing advance value by adding the determined offset value to the estimated timing advance value, and transmitting (507) the scrambled timing advance value, to be received by the mobile station (120). Also, methods and arrangements (800) in a mobile station (120), and methods and arrangements (1000) in a database (140) are disclosed.

Abstract: In a radio network which employs adaptive antennas for transmission of data to mobiles methods and apparatus are provided for improving the reception of transmitted data. When a block is to be transmitted in a first beam of the antenna and the block contains information for the mobile in the second beam, a modulation and coding scheme is used for the transmission of the block such that the modulation and coding scheme provides greater protection to the portion of the block containing information for the mobile in the second beam. The use of greater protection for the portion of the block which includes information for the mobile in the second beam increases the probability that the mobile in the second beam can receive and correctly decode the information intended for the mobile in the second beam in the block.

Abstract: In a method and an arrangement for establishing an encrypted connection between a mobile station and a base transceiver station in a mobile telephone system, the base transceiver station makes sure, before forwarding a cipher mode command message to the mobile station that the mobile station is in multiple-frame-mode.