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LTE: Why does uplink support only resource allocation type 2 ?

+4 votes

Actually there are three resource allocation types being used to allocate resources to UE(s) in downlink and uplink. For downlink all three (Type 0, 1 and 2) used but for uplink only resource allocation type 2 is being used.

posted Nov 7, 2013 by Vikram Singh

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1 Answer

+2 votes

Resource allocation type 2 is used for contiguous resource allocation.

In LTE uplink is SCFDMA and downlink is OFDMA. In SCFDMA , one needs to send all the data in contiguous fashion making it look like single carrier modulation. This decreases PAPR and hence reduces battery consumption (UE side battery).

answer Nov 7, 2013 by Salil Agrawal
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