Method and apparatus for allocating resources to real-time traffic communication in an Orthogonal Frequency Division Multiple Access (OFDMA) based system are provided. An example method includes assigning, selecting, mapping and transmitting. One or more Voice Over Internet Protocol (VoIP) packets are assigned to a single bundled packet. A first modulation and coding scheme (MCS) of a set of MCSs is selected. The first MCS is the one MCS of the set of MCSs capable of mapping the bundled packet to a smallest possible amount of physical OFDMA resources while addressing one or more negative impacts of interference on a link associated with the real-time traffic communication. The bundled packet is mapped to the smallest possible amount of physical OFDMA resources based on the first MCS selected. The bundled packet is transmitted using the first MCS selected and over the smallest possible amount of physical OFDMA resources mapped.