NB-IoT hybrid retransmission method and system

Abstract

The invention relates to the technical field of NB-IoT networks, in particular to an NB-IoT hybrid retransmission method and system. The system comprises a physical layer and a protocol stack, the physical layer and the protocol stack are operated by different cores of a processor, and the method comprises the steps that S100, the physical layer judges whether current data uplink is retransmittedor newly transmitted, if yes, S101 is executed, and if not, S102 is executed; the method comprises the steps that S101, a physical layer obtains data from a cache and sends the data, and an uplink sending process is ended; S102, the physical layer submits the related information to a protocol stack for processing; s1022, the protocol stack generates a protocol data unit according to the related information submitted by the physical layer and sends the protocol data unit to the physical layer; S1023, the physical layer receives the protocol data unit and sends the protocol data unit, and the uplink sending process is ended. According to the NB-IoT hybrid retransmission method and system provided by the invention, unnecessary power consumption in the hybrid retransmission process can be reduced, so that the power consumption of NB-IoT equipment is reduced, and the endurance of the equipment is improved.

Description

technical field [0001] The present invention relates to the field of NB-IoT network technology, in particular to an NB-IoT hybrid retransmission method and system. Background technique [0002] Different from LTE and other common mobile phone standards, the application scenarios of NB-IOT standard are in the non-working state most of the time, and a few of the time are in the working state. Whether it can make full use of the non-working state to enter a proper sleep state becomes whether The key to minimizing the overall power consumption of the system. [0003] In the traditional NB-IOT solution, both the physical layer and the protocol stack are in single-core mode, and hybrid retransmission (Harq) is implemented at the MAC layer of the protocol stack. When decoding downlink, the protocol stack needs to notify the physical layer to perform independent decoding or merge Decoding; when sending uplink, every time the physical layer receives an uplink authorization (UL_GRANT...

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Problems solved by technology

[0003]In the traditional NB-IOT solution, both the physical layer and the protocol stack are in single-core mode, and the hybrid retransmission (Harq) is implemented at the MAC layer of the protocol stack. When decoding downlink, the protocol stack needs to notify the physical layer to perform independent decoding or combined decoding; when sending uplink, every time the physical layer receives an uplink grant (UL_GRANT), it needs to send it to the MAC layer, which processes it and decides to perform a new one. Transmission or retransmission, in this case, the protocol stack must always be under high load during the wake-up time in the CDRX cycle, which is not conducive to power saving

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