Section: 6.2.3 Resource blocks
Content: Resource blocks are used to describe the mapping of certain physical channels to resource elements. Physical and virtual resource blocks are defined. A physical resource block is defined as consecutive OFDM symbols in the time domain and consecutive subcarriers in the frequency domain, where and are given by Table 6.2.3-1. A physical resource block thus consists of resource elements, corresponding to one slot in the time domain and 180 kHz in the frequency domain. Physical resource blocks are numbered from 0 to in the frequency domain. The relation between the physical resource block number in the frequency domain and resource elements in a slot is given by Table 6.2.3-1: Physical resource blocks parameters Except for subcarrier spacing and , a physical resource-block pair is defined as the two physical resource blocks in one subframe having the same physical resource-block number . A virtual resource block is of the same size as a physical resource block. Two types of virtual resource blocks are defined: - Virtual resource blocks of localized type - Virtual resource blocks of distributed type For each type of virtual resource blocks, a pair of virtual resource blocks over two slots in a subframe is assigned together by a single virtual resource block number, .