US 10,382,243 B2Granted

OFDM subframe transmission method and device using determined transport block sizes

AssigneeHuawei Technologies Co., Ltd.

InventorsDa Wang, Jian Wang, Juan Zheng

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Abstract

Embodiments of the present invention disclose a data transmission method, including: obtaining, by a first device, N orthogonal frequency division multiplexing (OFDM) symbols, where the N OFDM symbols are used to carry control information and data; and sending, by the first device, a first subframe and a second subframe to a second device, where the first subframe or the second subframe carries the control information, the first subframe includes M OFDM symbols of the N OFDM symbols, the second subframe includes K OFDM symbols of the N OFDM symbols, N is , a positive integer, M or K is zero or a positive integer, M is not greater than N, and K is not greater than N. The embodiments of the present invention further provide a first data transmission device.

Claims20

Dependent claims

A data transmission method, comprising:

obtaining, by a first device, a quantity of physical resource blocks (PRBs) occupied by first data carried in a first subframe, wherein the first data is data to be sent by the first device to a second device;
determining, by the first device, a first transport block size (TBS) or a second TBS according to the quantity of the PRBs occupied by the first data carried in the first subframe, wherein the second TBS comprises a TBS of the first subframe and a TBS of a second subframe;
performing, by the first device according to the first TBS or the second TBS, modulation and coding on the first data carried in the first subframe and the first data carried in the second subframe, wherein the first subframe and the second subframe are adjacent subframes;
and
sending, by the first device, the first subframe and the second subframe to the second device, wherein the first subframe is sent before the second subframe, there are K first subframes before the second subframe, the first subframe comprises N orthogonal frequency division multiplexing (OFDM) symbols, the second subframe comprises M OFDM symbols, N and K are positive integers, M is zero or a positive integer, and M≤N.

2 more elements

A data transmission device, comprising:

an input device;
a processor configured to:
obtain a quantity of physical resource blocks (PRBs) occupied by first data carried in a first subframe, wherein the first data is data to be sent by the data transmission device to a second device;
determine a first transport block size (TBS) or a second TBS according to the quantity of the PRBs occupied by the first data carried in the first subframe, wherein the second TBS comprises a TBS of the first subframe and a TBS of a second subframe;
and
perform, according to the first TBS or the second TBS, modulation and coding on the first data carried in the first subframe and the first data carried in the second subframe, wherein the first subframe and the second subframe are adjacent subframes;
and
an output device configured to:
send the first subframe and the second subframe to the second device, wherein the first subframe is sent before the second subframe, there are K first subframes before the second subframe, the first subframe comprises N orthogonal frequency division multiplexing (OFDM) symbols, the second subframe comprises M OFDM symbols, N and K are positive integers, M is zero or a positive integer, and M≤N.

6 more elements

A data transmission device, comprising:

an input device configured to:
receive a first subframe and a second subframe that are sent by a first device, wherein the first subframe is sent before the second subframe, there are K first subframes before the second subframe, the first subframe comprises N orthogonal frequency division multiplexing (OFDM) symbols, the second subframe comprises M OFDM symbols, N and K are positive integers, M is zero or a positive integer, and M≤N ;
a processor configured to:
obtain a quantity of physical resource blocks (PRBs) occupied by first data carried in the first subframe, wherein the first data is data sent by the first device to the second device,
determine a first transport block size (TBS) or a second TBS according to the quantity of the PRBs occupied by the first data carried in the first subframe, wherein the second TBS comprises a TBS of the first subframe and a TBS of the second subframe, and
performing perform, according to the first TBS or the second TBS, demodulation and decoding on the first data carried in the first subframe and the first data carried in the second subframe;
and
an output device.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/559,009Filed 18 Mar 2015
Published: US 2018/0102930 A112 Apr 2018
Granted: 13 Aug 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

H04L 27/2656
Synchronisation arrangements: frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe…
H04L 5/0044
Arrangements for allocating sub-channels of the transmission path: allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
H04L 5/0053
Arrangements for allocating sub-channels of the transmission path: allocation of signalling, i.e. of overhead other than pilot signals
H04L 5/0064
Allocation criteria: rate requirement of the data, e.g. scalable bandwidth, data priority