Resource allocation including a DC sub-carrier in a wireless communication system

A method in a wireless communication network scheduling entity, the method comprising:

• allocating, from the scheduling entity, a radio resource comprising a plurality of sub-carriers to a wireless communication terminal wherein the plurality of sub-carriers are a subset of available sub-carriers,
• wherein the available sub-carriers include sub-carriers with higher and lower frequencies than a radio frequency (RF) carrier frequency of the wireless communication terminal, and wherein the RF carrier frequency of the wireless communication terminal does not coincide with a nominal center frequency of any sub-carrier of the available sub-carriers;
• and
• transmitting, from the scheduling entity, the radio resource allocation to the wireless communication terminal;
• wherein the RF carrier frequency of the wireless communication terminal is a fraction of a sub-carrier spacing away from the nominal center frequency of the sub-carrier of the available sub-carriers;
• and wherein the spacing is ½.

A method in a wireless communication network scheduling entity, the method comprising:

• allocating, from the scheduling entity, a radio resource comprising a plurality of sub-carriers to a wireless communication terminal wherein the plurality of sub-carriers are a subset of available sub-carriers,
• wherein the available sub-carriers include sub-carriers with higher and lower frequencies than a radio frequency (RF) carrier frequency of the wireless communication terminal, and wherein the RF carrier frequency of the wireless communication terminal does not coincide with a nominal center frequency of any sub-carrier of the available sub-carriers;
• and
• transmitting, from the scheduling entity, the radio resource allocation to the wireless communication terminal;
• wherein the radio resource allocation includes a sub-carrier with nominal center frequency within a fraction of a sub-carrier spacing away from the RF carrier frequency of the wireless communication terminal;
• and
• wherein a number of the sub-carriers of the radio resource allocation is greater than or equal to a threshold and the threshold is dependent on a location of the sub-carrier within a sub-carrier distance of the RF carrier frequency of the wireless communication terminal.