REDUCED INTERFERENCE IN AN MBMS ENABLED SYSTEM

摘要

The invention discloses a method for a cellular system (100) which uses TD- SCDMA, Time Division Synchronous Code Division Multiple Access. According to the method, MBMS services, Multi media Broadcast Multicast Service, are enabled in a first (120) and a second (160) cell in the system, so that there can be both MBMS and non-MBMS users (130,170; 140; 180) in said first and second cells at one and the same time. According to the method, traffic to non-MBMS users (140, 180) in the first and second cells is sent using one and the same basic midamble code per cell which is shifted between the different non-MBMS users in each cell, and the traffic to MBMS users (130, 170) in both of said first and second cells who use the same MBMS services is varied between the cells with respect to the basic midamble code or/and the midamble shift.