Hybrid automatic repeat request processing method, communication equipment and medium

A technology of hybrid automatic retransmission and processing methods, applied in transmission systems, digital transmission systems, error prevention/detection using return channels, etc., can solve problems such as inability to support HARQ processes, and achieve easy scheduling algorithms, optimized scheduling algorithms, The effect of efficient use

Active Publication Date: 2021-07-02
CHINA MOBILE COMM LTD RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention provides a hybrid automatic repeat request processing method, communication equipment and medium to solve the problem that the existing terminal capability cannot support the HARQ process when two-way communication is performed through the GEO network

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  • Hybrid automatic repeat request processing method, communication equipment and medium
  • Hybrid automatic repeat request processing method, communication equipment and medium
  • Hybrid automatic repeat request processing method, communication equipment and medium

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Embodiment Construction

[0170] The inventor noticed during the course of the invention that:

[0171] GEO is limited by a large orbital height, and the propagation delay of GEO satellites is relatively large. In particular, when the GEO satellite adopts a bent pipe communication mode, ground user signals first arrive at the GEO satellite, and then are forwarded to the ground gateway through the GEO satellite. According to 3GPP evaluation, considering the signal processing delay of each device, the two-way communication delay of the GEO network using the bent pipe forwarding mode (that is, the path is: UE→GEO→Ground Gateway→GEO→UE) is about 544.8ms.

[0172] In traditional terrestrial communication technologies, the retransmission mechanism of the MAC (Media Access Control, Media Access Control) layer is usually used, which is called HARQ retransmission, that is, after the UE (User Equipment, User Equipment) receives the downlink data sent by the base station, If the demodulation is successful, ACK (...

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Abstract

The invention discloses a hybrid automatic repeat request processing method, communication equipment and a medium, the method comprising: if received transmission data in a hybrid automatic repeat request process fails to be decoded and cannot be cached by a soft buffer of a receiving end, indicating that the hybrid automatic repeat request process needs to retransmit data, and the previous transmission data is not cached; receiving, by a sending end, an instruction for the hybrid automatic repeat request process; and sending, by the sending end, data needing to be retransmitted according to the hybrid automatic retransmission request process. According to the invention, when the two-way communication is carried out through the geostationary orbit network, the hybrid automatic repeat request process can be supported.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a hybrid automatic repeat request processing method, communication equipment and a medium. Background technique [0002] In order to meet the ubiquitous wireless coverage requirements, the 5G system needs to support the integration of terrestrial network and satellite network. To this end, 3GPP is carrying out NTN (Non-terrestrial network, Non-terrestrial network) standardization research work, hoping to achieve the following goals through satellite networks: [0003] Provide cost-effective coverage for un-served (unserviceable) areas (ocean, aircraft, underwater) in 5G deployment; [0004] Strengthen the reliability of 5G network: improve the continuity of high-speed M2M (Machine to Machine) / IoT (Internet of Things, Internet of Everything) business, provide communication and emergency communication guarantee in extreme environments; [0005] Ensure 5G ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/16
CPCH04L1/1812H04L1/1829H04L1/1835H04L1/1864H04L1/1867H04L1/1628
Inventor 柯颋王飞徐珉王启星刘光毅刘建军
Owner CHINA MOBILE COMM LTD RES INST
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