Method and transmitter for allocating resources to terminal in telecommunication system
AssigneeMitsubishi Electric Corporation
InventorCristina Ciochina
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Abstract
The invention relates to allocating resources in a carrier when several subcarrier spacing configurations coexists, and more particularly to avoid or at least reduce the loss of resources when introducing guard bands to avoid inter-numerology interferences. The invention proposes to start the allocation of resource blocks to a terminal on a different subcarrier than the first subcarrier. Therefore the invention proposes a method to allocate such resource blocks to a terminal.
Claims17
A method for allocating resources to a terminal in a telecommunication system comprising at least a carrier comprising several subcarriers, said carrier supporting at least one subcarrier spacing configuration Afo and one subcarrier spacing configuration Δf1, with Δf1=q·Δf0, q being a strictly positive integer, said method comprising:
- a) selecting the subcarrier spacing configuration Δf1;
- b) determining a number L of resource blocks having subcarriers of said subcarrier spacing configuration Δf1;
- c) allocating to said terminal subcarriers among the subcarriers of the carrier of subcarrier spacing configurations Δf1, having their frequencies:
- greater or equal to a frequency, namely fstart, being the lowest frequency among frequencies of subcarriers of subcarrier spacing configuration Δf1 having a frequency higher than or equal to fref+m·N·Δf1+k·N·Δf0,
- fref being the lowest frequency among the subcarriers that are allowable for subcarrier spacing Δf1 in the carrier,
- k being an integer greater or equal to 1 and lesser or equal to (q−1),
- N being the number of subcarriers in a resource block,
- m being an integer greater or equal to 0 and lesser than a maximum number of resource blocks, allowable in the carrier, having subcarriers of subcarrier spacing configuration Δf1;
- lesser or equal to a frequency fref+m·N·Δf1+(L·N−1)·Δf1, namely flast,
- wherein k is determined such as fstart−fnear is greater than G, G being a strictly positive threshold, and fnear being a frequency of a subcarrier with a subcarrier spacing configuration different from Δf1, said subcarrier having the highest frequency among frequencies of subcarriers allocated in the carrier having subcarrier spacing configurations different from Δf1 and having lower frequencies than fref+(m+1)·N·Δf1.
A transmitter comprising a processor for allocating resources to a terminal in a telecommunication system comprising at least a carrier comprising several subcarriers, said carrier supporting at least one subcarrier spacing configuration Δf0 and one subcarrier spacing configuration Δf1, with Δf1=q·Δf0, q being a strictly positive integer, said transmitter being configured to perform:
- a) selecting the subcarrier spacing configuration Δf1;
- b) determining a number L of resource blocks having subcarriers of said subcarrier spacing configuration Δf1;
- c) allocating to said terminal subcarriers among the subcarriers of the carrier of subcarrier spacing configurations Δf1, having their frequencies:
- greater or equal to a frequency, namely fstart, being the lowest frequency among frequencies of subcarriers of subcarrier spacing configuration Δf1 having a frequency higher than or equal to fref+m·N·Δf1+k·N·Δf0,
- fref being the lowest frequency among the subcarriers that are allowable for subcarrier spacing Δf1 in the carrier,
- k being an integer greater or equal to 1 and lesser or equal to (q−1),
- N being the number of subcarriers in a resource block,
- m being an integer greater or equal to 0 and lesser than a maximum number of resource block, allowable in the carrier, having subcarriers of subcarrier spacing configuration Δf1;
- lesser or equal to a frequency fref+m·N·Δf1+(L·N−1)·Δf1, namely flast,
- wherein k is determined such as fstart−fnear is greater than G, G being a strictly positive threshold, and fnear being a frequency of a subcarrier with a subcarrier spacing configuration different from Δf1, said subcarrier having the highest frequency among frequencies of subcarriers allocated in the carrier having subcarrier spacing configurations different from Δf1 and having lower frequencies than fref+(m+1)·N·Δf1.
Dependencies are inferred from the claim text.