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Method for determining user equipment cyclic redundancy check CRC error, user equipment, base station and storage medium

A cyclic redundancy check and user equipment technology, applied in the field of communication, can solve the problems such as the inability to clarify the CRC error of the user equipment and the inability to accurately respond to the user equipment message, and achieve the effect of accurate response

Active Publication Date: 2021-09-21
BEIJING XIAOMI PINECONE ELECTRONICS CO LTD
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Problems solved by technology

[0006] Therefore, in the related art, when the base station receives the NACK message sent by the user equipment, it cannot clarify the cause of the CRC error of the user equipment, so that it cannot make an accurate response to the message sent by the user equipment

Method used

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  • Method for determining user equipment cyclic redundancy check CRC error, user equipment, base station and storage medium
  • Method for determining user equipment cyclic redundancy check CRC error, user equipment, base station and storage medium
  • Method for determining user equipment cyclic redundancy check CRC error, user equipment, base station and storage medium

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Embodiment Construction

[0048] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0049] In NB-IoT, when user equipment decodes NPDSCH, if the CRC is correct, it sends an ACK message to the base station, but if the CRC is wrong, it sends a NACK message to the base station.

[0050] However, there are two causes of CRC errors:

[0051] 1. The user equipment is in an out-of-sync state;

[0052] 2. The user equipment makes an error in encoding or decoding the NPDSCH.

[0053] Therefore, when the base station receives the NACK message, it cannot be clear whether the CRC error of the user equipment is caused by the out-of-synchronization state of the user equipment or by a codec error, so that it cannot accurately respond to the message sent ...

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Abstract

The present disclosure relates to a method for determining a user equipment cyclic redundancy check (CRC) error, the user equipment, a base station and a storage medium, so as to accurately indicate the cause of the user equipment CRC error to the base station. The method for determining a user equipment cyclic redundancy check CRC error of the present disclosure is applied to a user equipment in the narrowband Internet of Things, including: when the user equipment fails to decode the received downlink data, determine whether the user equipment is in Out-of-synchronization state: when the user equipment is in the out-of-synchronization state, send a discontinuous transmission DTX message to the base station, and the DTX message is used to indicate to the base station that the user equipment is in the out-of-synchronization state and causes a CRC error.

Description

technical field [0001] The present disclosure relates to the field of communication technologies, and in particular, relates to a method for determining a CRC error of a user equipment, a user equipment, a base station, and a storage medium. Background technique [0002] NB-IoT (Narrow Band Internet of Things, Narrowband Internet of Things) is a cellular network connection technology specially designed for the Internet of Everything. In NB-IoT, when the user equipment decodes the NPDSCH (Narrowband PhysicalDownlink Shared channel, narrowband physical downlink shared channel), if the CRC (Cyclic Redundancy Check, cyclic redundancy check) is correct, it sends an ACK (Acknowledgment, answer) message to the base station , if the CRC is wrong, then send a NACK (Negative Acknowledgment, negative answer) message to the base station. [0003] However, in NB-IoT, there are two reasons for CRC errors: [0004] 1. The user equipment is in an out-of-sync state; [0005] 2. The user e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W76/28H04L1/00H04L5/00
CPCH04L1/0061H04L5/0055H04W76/28
Inventor 祝文敏郭旸
Owner BEIJING XIAOMI PINECONE ELECTRONICS CO LTD
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