US 11,606,181 B2Granted

Data transmission method and apparatus

AssigneeHuawei Technologies Co., Ltd.

InventorZhihua Tang

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Abstract

A data transmission method and apparatus are provided. The method includes: sending, by a digital unit (DU), first uplink scheduling information to a radio unit (RU); receiving a predicted decoding result from the RU; receiving uplink data from a terminal, and decoding the uplink data to obtain an actual decoding result; and performing, by the DU, an error remedy for uplink data transmission based on the actual decoding result and the predicted decoding result. The decoding result is predicted, and scheduling information for data transmission is adjusted based on the predicted decoding result, thereby improving data transmission reliability, so that a data transmission latency in a relaxed latency communication scenario can be met, data transmission can be normally performed, and an interface of a base station after a re-split can be normally used, thereby reducing a bandwidth requirement on the interface.

Claims12

Dependent claims

A data transmission method, comprising:

receiving, by a radio unit RU, first uplink scheduling information sent by a digital unit DU;
predicting, by the RU based on a pilot signal estimation result of uplink data and/or at least one piece of historical information, a decoding result of the uplink data received by a base station;
determining, by the RU, second uplink scheduling information based on a predicted decoding result and the first uplink scheduling information;
sending, by the RU, the predicted decoding result and the second uplink scheduling information to a terminal;
and
sending, by the RU, the predicted decoding result to the DU, wherein
the method further comprises:
collecting a quantity of initially transmitted blocks N in a specified period;
calculating, based on the predicted decoding result, a predicted quantity of error blocks Npreerr in initial transmission;
obtaining through calculation, a predicted initial block error rate IBLER based on N and Npreerr;
calculating, based on the actual decoding result, an actual quantity of error blocks Nrealerr in the initial transmission;
obtaining through calculation, an actual IBLER based on N and Nrealerr;
and
adjusting a calibration deviation SINRadj of a signal to interference plus noise ratio SINR based on the predicted IBLER and the actual IBLER.

11 more elements

A data transmission method, comprising:

sending, by a digital unit DU, first uplink scheduling information to a radio unit RU;
receiving, by the DU, a predicted decoding result sent by the RU;
receiving, by the DU, uplink data sent by a terminal, and decoding the uplink data to obtain an actual decoding result;
and
performing, by the DU, an error remedy for uplink data transmission based on the actual decoding result and the predicted decoding result,
wherein the performing, by the DU, an error remedy for uplink data transmission based on the actual decoding result and the predicted decoding result comprises one of:
when the actual decoding result is a positive acknowledgment ACK and the predicted decoding result is a negative acknowledgment NACK, determining, by the DU, that the predicted decoding result is falsely reported, and no remedy is required for the uplink data transmission;
or
when the actual decoding result is a NACK, and the predicted decoding result is an ACK, determining, by the DU, that the uplink data is missed to be reported, and the remedy needs to be performed for the uplink data transmission.

6 more elements

A data transmission method, comprising:

predicting, by a digital unit DU, a decoding result of downlink data transmission based on at least one piece of historical information;
scheduling, by the DU, the downlink data transmission based on a predicted decoding result;
receiving, by the DU, an actual decoding result sent by a terminal;
and
performing, by the DU, an error remedy for the downlink data transmission based on the predicted decoding result and the actual decoding result,
wherein the performing, by the DU, an error remedy for the downlink data transmission based on the predicted decoding result and the actual decoding result comprises one of:
when the actual decoding result is a positive acknowledgment ACK and the predicted decoding result is a negative acknowledgment NACK, determining, by the DU, that the predicted decoding result is falsely reported, and no remedy is required for the downlink data transmission;
or
when the actual decoding result is the NACK, and the predicted decoding result is the ACK, determining, by the DU, that the downlink data is missed to be reported, and the remedy needs to be performed for the downlink data transmission.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/098,061Filed 13 Nov 2020 · continuation
Priority: 16 May 2018
Published: US 2021/0119754 A122 Apr 2021
Granted: 14 Mar 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

H04L 1/0016
Characterised by the adaptation strategy: involving special memory structures, e.g. look-up tables
H04L 5/0055
Allocation of signalling, i.e. of overhead other than pilot signals: physical resource allocation for ACK/NACK
H04L 1/0019
Characterised by the adaptation strategy: in which mode-switching is based on a statistical approach
H04L 1/0026
Characterised by the signalling: transmission of channel quality indication