US 9,882,754 B2Granted

Data transmission method and apparatus

AssigneeHuawei Technologies Co., Ltd.

InventorsJun Zhu, Jiayin Zhang, Yalin Liu

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Abstract

A data transmission method and apparatus are provided, which can improve a throughput rate of a system, and improve data transmission performance and user experience. The method comprises determining a target bit sequence. In the system state, a peak-to-average power ratio PAPR corresponding to the target bit sequence is less than a PAPR that corresponds to a bit sequence corresponding to the data length of the target data. The method comprises adding the target bit sequence to length bits that are in a legacy signal field of a target preamble, and performing transmit power enhancement processing on a legacy short training field, a legacy long training field, and the legacy signal field that are in the target preamble according to the transmit power amplification limit.

Claims16

Dependent claims

A data transmission method, the method comprising:

determining, by a transmit end device and based on a preset rule and a system state, a target bit sequence according to a data length of target data sent to a receive end, wherein in the preset rule, the data length of the target data is less than a data length corresponding to the target bit sequence, and in the system state, a peak-to-average power ratio PAPR corresponding to the target bit sequence is less than a PAPR that corresponds to a bit sequence corresponding to the data length of the target data, and the PAPR corresponding to the target bit sequence is less than a transmit power amplification limit of the transmit end;
adding the target bit sequence to length bits that are in a legacy signal field of a target preamble;
performing transmit power enhancement processing on a legacy short training field, a legacy long training field, and the legacy signal field that are in the target preamble according to the transmit power amplification limit;
and
sending the target preamble to the receive end, wherein the target preamble and the target data are carried in a same data frame.

2 more elements

A data transmission apparatus, wherein the apparatus comprises:

a determining unit, configured to determine, based on a preset rule and a system state, a target bit sequence according to a data length of target data sent to a receive end, wherein in the preset rule, the data length of the target data is less than a data length corresponding to the target bit sequence;
and in the system state, a peak-to-average power ratio PAPR corresponding to the target bit sequence is less than a PAPR that corresponds to a bit sequence corresponding to the data length of the target data, and the PAPR corresponding to the target bit sequence is less than a transmit power amplification limit of the transmit end;
and
a processing unit, configured to:
add the target bit sequence to length bits that are in a legacy signal field of a target preamble;
perform transmit power enhancement processing on a legacy short training field, a legacy long training field, and the legacy signal field that are in the target preamble according to the transmit power amplification limit;
and
send the target preamble to the receive end, wherein the target preamble and the target data are carried in a same data frame.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/235,484Filed 12 Aug 2016 · continuation
Priority: 13 Feb 2014
Published: US 2016/0352553 A11 Dec 2016
Granted: 30 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H04L 27/2602
Multicarrier modulation systems: signal structure
H04L 27/2614
Multicarrier modulation systems: peak power aspects
H04L 27/2603
Signal structure: signal structure ensuring backward compatibility with legacy system
H04W 84/12
Small scale networks; Flat hierarchical networks: wLAN [Wireless Local Area Networks]

Family

PCT/CN2014/072025Parent of this continuation · filed 13 Feb 2014
US 2016/0352553 A1Pre-grant publication · published 1 Dec 2016
US 9,882,754 B2This patent

From the US filing history. Foreign family members aren’t listed.

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