Methods and apparatus for channel interleaving in OFDM systems

摘要

A method and apparatus for channel interleaving in a wireless communication system. In one aspect of the present invention, the data resource elements are assigned to multiple code blocks, and the numbers of data resource elements assigned to each code block are substantially equal. In another aspect of the present invention, a time-domain-multiplexing-first (TDM-first) approach and a frequency-domain-multiplexing-first (FDM-first) approach are proposed. In the TDM-first approach, at least one of a plurality of code blocks are assigned with a number of consecutive data carrying OFDM symbols. In the FDM-first approach, at least one of the plurality of code blocks are assigned with all of the data carrying OFDM symbols. Either one of the TDM first approach and the FDM-first approach may be selected in dependence upon the number of the code blocks, or the transport block size, or the data rate.

主权项

1. A method for resource allocation, the method comprising:
dividing a time and frequency resource block into a plurality of equal duration and size resource elements in time and frequency domains, wherein a subset of the plurality of resource elements are data resource elements that are available for data transmission; segmenting, in a code block generation unit, a data block to be transmitted into a plurality of code blocks; and assigning, by a resource mapping unit, substantially equal numbers of two or more of the data resource elements to each of the plurality of code blocks, wherein a number of data resource elements assigned to one of the code blocks is based upon an index of the respective code block, a number of the data resource elements in the time and frequency resource block, and a number of the code blocks.