US 11,115,148 B2 · Technique for selecting a transport block size in a communication system

Abstract

The disclosure pertains to selecting a Transport Block Size (TBS) in a communication system. An aspect is directed to an apparatus for selecting a Transport Block Size (TBS) for a transmitter of a communication system. The communication system supports variable Transmission Time Interval (TTI) lengths regarding the number of symbols to be transmitted in one TTI. The apparatus is configured to receive first information indicative of a TTI length, receive second information indicative of a number of reference symbols included in the TTI, decode, from the first information, the TTI length, and decode, from the second information, the number of reference symbols included in the TTI. The apparatus is further configured to calculate, based on the TTI length and based on the number of reference symbols included in the TTI, a number of data symbols included in the TTI, calculate, based on an allocation bandwidth and based on the number of data symbols included in the TTI, a number of data Resource Elements (REs) in the TTI, and select the TBS from a data structure, based on the calculated number of data REs. Further aspects of the disclosure pertain to a base station, a UE, methods, computer programs, computer-readable recording media and a system.

Claims10

Dependent claims

A user equipment (UE) in a communication system configured to select a Transport Block Size (TBS) for a data transmission, wherein the communication system supports variable Transmission Time Interval (TTI) lengths regarding the number of Orthogonal Frequency-Division Multiplexing (OFDM) symbols to be transmitted in one TTI, the apparatus comprising:

processing circuitry;
memory containing instructions executable by the processing circuitry whereby the apparatus is operative to:
receive, from a network node, first information indicative of a TTI length of the TTI for the data transmission;
receive, from the network node, second information indicative of a number of reference symbols included in the TTI, wherein the reference symbols are OFDM Demodulation Reference Symbols (DMRS);
decode, from the first information, the TTI length;
decode, from the second information, the number of reference symbols included in the TTI;
calculate, based on the TTI length and based on the number of reference symbols included in the TTI, a number of data symbols included in the TTI by using the equation D=L−R, wherein D is the number of data symbols included in the TTI, L is the TTI length represented by the number of symbols to be transmitted in one TTI, and R is the number of reference symbols included in the TTI;
calculate, based on an allocation bandwidth for the data transmission and based on the number of data symbols included in the TTI, a number of data Resource Elements (REs) in the TTI;
select the TBS, from a data structure, based on the calculated number of data REs.

6 more elements

A method implemented by a user equipment (UE) in a wireless communication system for selecting a Transport Block Size (TBS) for a data transmission, wherein the communication system supports variable Transmission Time Interval (TTI) lengths regarding the number of Orthogonal Frequency-Division Multiplexing (OFDM) symbols to be transmitted in one TTI, the method comprising:

receiving, from a network node, first information indicative of a TTI length of the TTI for the data transmission;
receiving, from the network node, second information indicative of a number of reference symbols included in the TTI, wherein the reference symbols are OFDM Demodulation Reference Symbols (DMRS);
decoding, from the first information, the TTI length;
decoding, from the second information, the number of reference symbols included in the TTI;
calculating a number of data symbols included in the TTI based on the TTI length and based on the number of reference symbols included in the TTI;
calculating a number of data Resource Elements (REs) in the TTI based on an allocation bandwidth for the data transmission and based on the number of data symbols included in the TTI;
selecting the TBS, from a data structure, based on the calculated number of data REs,
wherein calculating the number of data symbols included in the TTI comprises calculating the number of data symbols included in the TTI by using the equation D=L−R, wherein D is the number of data symbols included in the TTI, L is the TTI length represented by the number of symbols to be transmitted in one TTI, and R is the number of reference symbols included in the TTI.

5 more elements

Dependencies are inferred from the claim text.

Technique for selecting a transport block size in a communication system

Life of this patent

Technique for selecting a transport block size in a communication system

Life of this patent

Abstract

Claims10