A kind of physical layer retransmission control method
A control method and physical layer technology, applied in the field of communication, can solve problems such as high resource consumption and complexity, and achieve the effect of simplifying the implementation method and reducing resource overhead
Active Publication Date: 2022-07-01
NOREL SYST
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Problems solved by technology
The existing retransmission control method implemented in the physical layer is relatively complex, resulting in more resource consumption. Therefore, it is necessary to study a new retransmission control method in the physical layer in order to ensure the reliability of data transmission and reduce the delay of retransmission data. At the same time, simplify the implementation method and reduce resource overhead
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[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.
[0038] The present invention provides a physical layer retransmission control method for performing retransmission control on a transmission system.
[0039] like figure 1 As shown, the transmission system includes a first transmission terminal 1, a second transmission terminal 2, and a transmission channel 3. The first transmission terminal 1 sends downlink data packets to the second transmission terminal 2 through the transmission channel 3, and the second transmissi...
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The invention discloses a physical layer retransmission control method, which is used for retransmission control of a transmission system. The transmission system includes a first transmission terminal, a second transmission terminal, and a transmission channel. The first transmission terminal sends the downlink data packet to the second transmission terminal through the transmission channel, and the second transmission terminal sends the retransmission control information to the first transmission terminal through the transmission channel. transmission terminal. The downlink data packet includes a sequence number and an abnormal state field, and the sequence numbers contained in the consecutive downlink data packets are arranged in the order of sending, and the abnormal state field is used to indicate the data abnormal state of the first transmission terminal. The second transmission terminal receives the downlink data packet sent by the first transmission terminal and judges its correctness. If it is determined that the downlink data packet has an error, it sends retransmission control information to the first transmission terminal, and the retransmission control information includes retransmission. The sequence number of the data packet, the first transmission terminal retransmits the downlink data packet to the second transmission terminal according to the retransmission control information.
Description
technical field [0001] The present invention relates to the field of communication technologies, in particular to a retransmission control method. Background technique [0002] Retransmission is a common method used to ensure the reliability of data transmission in a transmission system. The retransmission mechanism is often used as a part of the upper layer protocol such as the transport layer, such as the TCP protocol, etc., and is usually implemented by software methods. Compared with the implementation of retransmission in the upper-layer protocol, the implementation of retransmission in the physical layer is conducive to reducing the delay of retransmitted data, which is particularly important in applications such as vehicle-mounted assisted driving systems that have stricter requirements for data transmission delay. The existing retransmission control methods implemented in the physical layer are relatively complex, resulting in more resource consumption. Therefore, i...
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IPC IPC(8): H04L1/16
CPCH04L1/1671
Inventor 梁科王元龙
Owner NOREL SYST