FIELD: physics; communication.
SUBSTANCE: invention relates to communication engineering. A method and device for channel assessment in a system which uses broadcast/group (multicast) and unicast protocols are proposed. The number of pilot signals used for broadcasting is greater than the number of pilot signals used for unicast. Channel assessment can be considerably worsened if a character of the broadcasting time interval is adjoined to a character of the unicast time interval such that, pilot signals of adjacent time intervals are used for channel assessment. It is therefore determined whether the first time interval of one transmission protocol (broadcasting time interval) is adjacent to the second time interval of another transmission protocol (unicast time interval), and if the first character of the unicast time interval. The power of the pilot signal and/or number of pilot-subcarriers increases for the peripheral character of the broadcasting time interval for channel assessment using the peripheral character.
EFFECT: more reliable assessment of channel quality.
20 cl, 6 dwg
