Uplink data retransmission processing method, device and user equipment

A data retransmission and processing method technology, applied in the field of communication, can solve the problems of reducing system resource efficiency, data transmission interruption, RLC reset, etc., and achieve the effect of improving system performance, ensuring stability, and avoiding RLC reset

Active Publication Date: 2022-03-25
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

When the network uplink resource authorization value is small or the channel fading is large, the data buffered in the buffer will not be scheduled by the MAC for a long time, and RLC repeatedly generates ReTx PDUs, then these ReTx PDUs will always be backlogged in the buffer, which not only reduces the The resource efficiency of the system, and the ReTx PDU triggers retransmission for a certain number of times will cause RLC reset, resulting in interruption and fluctuation of uplink and downlink data transmission

Method used

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  • Uplink data retransmission processing method, device and user equipment
  • Uplink data retransmission processing method, device and user equipment
  • Uplink data retransmission processing method, device and user equipment

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Embodiment Construction

[0029] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] The present invention provides a method for processing uplink data retransmission. A state flag is set for the RLC PDU to record the transmission state of the PDU, such as figure 1 As shown, the method includes:

[0031] S11, after generating the RLC PDU, set the state identifier of the RLC PDU to prohibit t...

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Abstract

The present invention provides an uplink data retransmission processing method, device and user equipment. The method includes: after the RLC PDU is generated, setting the state flag of the RLC PDU to prohibit generation of a retransmission PDU; after scheduling transmission of the RLC PDU, setting the state flag of the RLC PDU to allow generation of a retransmission PDU: After retransmission is required or a retransmission request message sent by the network side device is received, a retransmission PDU is generated or not retransmitted according to the status identifier of the PDU that needs to be retransmitted. The present invention can determine whether to generate a retransmission PDU according to the state of the PDU in the cache, avoiding the RLC reset caused by multiple triggers of retransmission due to a backlog of a large amount of duplicate data in the cache, ensuring the stability of the data transmission service, and improving the timeliness of data transmission. Thereby improving system performance.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a method, device and user equipment for retransmission processing of uplink data. Background technique [0002] RLC (Radio Link Control, radio link control sublayer) and MAC (Media Access Control, media access control sublayer) are important radio interface protocols in the LTE wireless access system. When the uplink data is scheduled and transmitted, the RLC is configured in the confirmation mode, and the RLC and the MAC are in two processes respectively. The data generated by the RLC is put into the buffer buffer, and the data is sent to the MAC after waiting for the sending opportunity, that is, the RLC generates the data first, and the MAC After sending the data. [0003] When the RLC receives a NACK (No Acknowledgement, negative acknowledgment information) fed back by the network, the RLC generates a ReTx PDU (ReTx Protocol Data Unit, retransmission pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04L1/18
Inventor 蒋海芳贺元才夏少华
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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