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Downlink data transmission method and device

A transmission method and downlink data technology, applied in the field of communication, can solve the problems of large transmission delay of ACK feedback packets and other problems

Active Publication Date: 2021-05-28
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] This application provides a downlink data transmission method and device to solve the problem of ACK feedback packet transmission in the prior art because the base station does not distinguish the type of downlink data packets. The problem of large delay

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  • Downlink data transmission method and device
  • Downlink data transmission method and device

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Embodiment Construction

[0074] In view of the problem in the prior art that the base station does not distinguish the type of downlink data packets, resulting in a large transmission delay of the ACK feedback packet, in order to reduce the transmission delay of the ACK feedback packet and improve the system throughput, in the embodiment of the present application, the A solution for downlink data transmission.

[0075] The solution is: the base station acquires each confirmation ACK feedback packet sent by the service server at the PDCP layer, wherein one ACK feedback packet is associated with the first priority information representing the processing priority of the one ACK feedback packet, and each ACK feedback packet is Set the corresponding ACK type mark for the feedback packet, and send each ACK feedback packet to the MAC layer; then, at the MAC layer, based on the first priority information and the ACK type mark of each ACK feedback packet, respectively send each ACK feedback packet Join the co...

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Abstract

The invention discloses a downlink data transmission method and device, and aims to solve the problem that ACK feedback packet transmission delay is relatively large due to the fact that a base station does not distinguish the types of downlink data packets in the prior art. The method comprises the following steps: obtaining each ACK feedback packet sent by a service server on a PDCP layer by the base station , setting a corresponding ACK type mark for each ACK feedback packet, and setting a corresponding ACK type mark for each ACK feedback packet on an MAC layer; and respectively adding the ACK feedback packets into the corresponding target ACK feedback packet processing queues based on the first priority information and the ACK type marks of the ACK feedback packets, and sequentially sending the ACK feedback packets to the corresponding UE based on the target ACK feedback packet processing queues. According to the method and the device, the corresponding ACK type mark is set for the ACK feedback packet, and the ACK feedback packet is added into the corresponding target ACK feedback packet processing queue, so that the feedback time delay of the ACK feedback packet is reduced, and the overall throughput of the system is greatly improved.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a downlink data transmission method and device. Background technique [0002] 5G New Radio (5G NR) is a global 5G standard based on a new air interface design based on Orthogonal Frequency Division Multiplexing (OFDM), and it is also a very important foundation for the next generation of cellular mobile technology. [0003] In the 5G NR network, when the transmission control protocol (Transmission Control Protocol, TCP) is used for data transmission, after the user equipment establishes a connection with the service server, if the service server receives the data packet sent by the terminal, it will send a confirmation to the user equipment (Acknowledge character, ACK) feedback packet, where the ACK feedback packet is used to confirm to the user equipment whether the data packet is received. [0004] When the packet data convergence protocol (Packet Data Con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/801H04L12/855H04L1/16H04L47/2466
CPCH04L47/2466H04L47/29H04L1/1607
Inventor 王林
Owner DATANG MOBILE COMM EQUIP CO LTD