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Thread: WHAT IS BLER in UMTS

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    Post WHAT IS BLER in UMTS

    WHAT IS BLER in UMTS amd what is unit of Transport Block

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    A Block Error Ratio (BLER) is defined as the ratio of the number of erroneous blocks received to the total number of blocks sent. An erroneous block is defined as a Transport Block, the cyclic redundancy check (CRC) of which is wrong.


    A transport block is the basic unit of data transfer between physical (L1) and MAC(L2) layers and comprises a MAC PDU (protocol data unit). A cyclic redundancy checksum (CRC) is added to each transport block as it arrives at the physical layer. A number of transport blocks can be grouped into a transport block set. These are passed to the same transport channel at the same time and must be of equal size.The TTI is the transmission time interval over which the transport block set is passed to the transport channel and will be a multiple of 10ms (radio frame duration).This also constitutes the interleaving period for the transport block set.


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