What is claimed is:1. Rotating lobe access method in a telecommunication system including at least one base station and a number of mobile stations and having an antenna supporting a number of horizontal lobes for communication between the base station and the mobile stations, characterized in that signals to and from the antenna are modulated by a lobe shaping unit to bring the lobe to rotate in a horizontal plane, that the mobile station synchronizes with the base station transmission lobe by means of an internal clock, and after achieving synchronization goes into a sleep mode, which sleep mode has a number of wake up levels, wherein the mobile station in the deepest level listens for wake up calls and in the highest level listens for a message.2. Method according to claim 1, characterized in that the mobile station only listens to the base station during the interval in which the base station transmission lobe is transmitted in the direction of the mobile station.3. Method in accordance with any one of claims 1 or 2, characterized in that the sleep mode has at least three wake up levels, wherein the mobile station in the deepest level listens for group wake up calls, in the next level listens for an individual wake up call, and in the highest level listens to the proper message.4. Method in accordance with any one of claims 1 to 2, characterized in that the sleep mode is dependent of the battery power remaining in the mobile station.5. Method according to any of claims 1-2, characterized in that the signals to and from the antenna are multiplied by N complex weighting coefficients to create different lobes.6. Method according to claim 1, characterized in that each lobe has a dwell time t.sub.dw and a paging, access or call set-up message is transmitted in a message time t.sub.m, and t.sub.m <t.sub.dw.7. Method according to claim 1, characterized in that fixed weighting coefficients are applied sequentially to the signals to and from the antenna.8. Method according to claim 1, characterized in that continuously variable weighting coefficients are applied sequentially to the signals to and from the antenna.9. Method in accordance with claim 1, characterized in that the lobes are brought to rotate in a clockwise or counterclockwise direction.10. Method in accordance with claim 1, characterized in that the lobes are brought to sweep a revolution by hopping through sectors in a pseudorandom order.11. Method in accordance with claim 1, characterized in that the antenna supports at least two vertical lobes.12. Method according to claim 11, characterized in that the antenna supports an upper and a lower lobe, wherein the upper and lower lobes are swept successively in each sector.13. Method in accordance with claim 1, characterized by using separate transmission and reception lobes.14. Method according to claim 13, characterized in that the reception lobe is a delayed replica of the transmission lobe.15. Method in accordance with claim 1, characterized in that the base station estimates the position of a mobile station by determining the azimuth angle and the distance by timing the time delay of the mobile station reply.16. Method in accordance with claim 1, characterized in that a mobile station calculates its position using triangulation by listening to at least two base stations for obtaining the azimuth angles and distances to the respective base stations.17. Method in accordance with claim 1, characterized in that paging directed to a mobile station is first performed in the latest reported direction of the mobile station.18. Method according to claim 17, characterized in that first a number of paging attempts is performed in the latest reported direction of the mobile station, and if necessary, then a number of paging attempts is performed in a wider sector encompassing the sector of the latest reported direction, and if necessary, a paging attempt scanning a full horizontal revolution is performed.19. Method in accordance with any one of claim 1, characterized in that the power emitted in each lobe of the base station is controlled to control the shape of the base station coverage area.20. Method in accordance with claim 1, characterized in that, when a mobile station moves between different lobes of the base station, a hand-off between the lobes of the base station is performed.21. Method according to claim 20, characterized in that the base station frequency follows the mobile station, if the frequency is not used in the new sector.22. Method according to claim 20, characterized in that the base station switches to a new frequency for the mobile station in the new sector.23. Method according to claim 1, characterized in that each lobe has a dwell time t.sub.dw and a paging, access or call set-up message is transmitted in a message time t.sub.m, the duration of the message time being less than about one half the dwell time.