Resource allocation including a DC sub-carrier in a wireless communication system
A method in a wireless communication terminal ( 103 ), including receiving a radio resource allocation comprising a plurality of sub-carriers that is a subset of available sub-carriers, wherein the available sub-carriers include a DC sub-carrier, wherein the DC sub-carrier and all but one edge-most sub-carrier of the plurality of sub-carriers are designated for transmission if the DC sub-carrier is between any two sub-carriers of the allocation, and all of the sub-carriers except the DC sub-carrier from the plurality of sub-carriers are designated for transmission if the DC sub-carrier is not between any two sub-carriers of the allocation.
1. A method in a wireless communication terminal, the method comprising:
receiving a radio resource allocation comprising a plurality of sub-carriers that is a subset of available sub-carriers, wherein the available sub-carriers include a DC sub-carrier;
when the DC sub-carrier is in a space including one or more sub-carriers between any two sub-carriers of the allocation, the DC sub-carrier and all but one edge-most sub-carrier of the allocation are designated for transmission;
when the DC sub-carrier is not in a space including one or more sub-carriers between any two sub-carriers of the allocation, all of the sub-carriers of the allocation are designated for transmission and the DC sub-carrier is not designated for transmission; and
transmitting information on one or more of the designated sub-carriers.
2. The method of claim 1 , wherein the step of transmitting information on one or more of the designated sub-carriers further comprises spreading the information prior to transmission with a DFT of size equal to a number of the designated sub-carriers.
3. The method of claim 1 , wherein the DC sub-carrier is adjacent to not more than one of the plurality of sub-carriers of the resource allocation.
4. The method of claim 1 , wherein the DC sub-carrier is adjacent to more than one of the plurality of sub-carriers of the resource allocation.
5. The method of claim 1 , further comprising transmitting information on consecutive sub-carriers of the one or more designated sub-carriers.
6. The method of claim 1 , further comprising transmitting information on the equally spaced non-consecutive sub-carriers,
wherein the radio resource allocation is equally spaced and non-consecutive and includes the DC sub-carrier.
7. A method in a wireless communication network scheduling entity, the method comprising:
allocating a plurality of sub-carriers that is a subset of available sub-carriers to a wireless communication terminal, wherein the available sub-carriers include a DC sub-carrier,
when the DC sub-carrier is in a space including one or more sub-carriers between any two sub-carriers of the allocation, the DC sub-carrier and all but one edge-most sub-carrier of the allocation are designated for transmission,
when the DC sub-carrier is not in a space including one or more sub-carriers between any two sub-carriers of the allocation, all of the sub-carriers of the allocation are designated for transmission but the DC sub-carrier is not designated for transmission.
8. The method of claim 7 , further comprising grouping the plurality of sub-carriers not including the DC sub-carrier into one or more resource blocks wherein each resource block comprises a common number of sub-carriers.
9. The method of claim 8 , further comprising grouping the plurality of sub-carriers including the DC sub-carrier into an expanded resource block having more sub-carriers than other resource blocks.
10. The method of claim 7 , wherein the plurality of sub-carriers allocated from the subset of available sub-carriers are consecutive sub-carriers.
11. The method of claim 7 , further comprising allocating the plurality of sub-carriers that is the subset of available sub-carriers wherein the allocation is equally spaced and non-consecutive and includes the DC sub-carrier.