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Data retransmission method, data receiving method, terminal and network equipment

A network device, data retransmission technology, applied in the field of communication, can solve the problem that the HARQ mechanism cannot be applied

Active Publication Date: 2020-10-30
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2-step RACH, the initial transmission of PUSCH is determined by high-level parameter configuration, and the first transmission is triggered by different events, so the traditional HARQ mechanism cannot be applied to PUSCH in MsgA in 2-step RACH transmission

Method used

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  • Data retransmission method, data receiving method, terminal and network equipment
  • Data retransmission method, data receiving method, terminal and network equipment
  • Data retransmission method, data receiving method, terminal and network equipment

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Embodiment Construction

[0073] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0074] Such as image 3 As shown, the embodiment of the present invention provides a data retransmission method applied to a terminal, and the method includes:

[0075] Step 31, sending a random access request message to the network device, the random access request message including pilot frequency and PUSCH (Physical Uplink Shared Channel);

[0076] Step 32, receiving a random access response message issued by the network device;

[0077]...

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Abstract

An embodiment of the invention provides a data retransmission method, a data receiving method, a terminal and network equipment. The method at the terminal side comprises the steps: transmitting a random access request message of a random access flow to the network equipment, wherein the random access request message comprises a pilot frequency and a physical uplink shared channel (PUSCH); receiving a random access response message issued by the network device; resending the PUSCH in the random access request message according to the random access response message. According to the method disclosed in the solution of the invention, the retransmission of the PUSCH in the MsgA in the RACH can be realized, and transmission reliability of the data is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data retransmission method, a receiving method, a terminal and a network device. Background technique [0002] In the existing technology, such as figure 1 As shown, the terminal initiates contention-based random access (CBRA, Contention-based Random Access) 4-step RACH process is roughly as follows: [0003] 1) The terminal sends an uplink signal including Preamble (preamble sequence, preamble or pilot frequency) on the resource of Physical Random Access Channel (PRACH, Physical Random Access Channel), which is called Msg1; [0004] 2) The terminal receives the Random Access Response (RAR, Random Access Response) sent by the base station side, called Msg2; [0005] 3) The terminal sends uplink data on the uplink time-frequency resources indicated by the RAR, which is called Msg3; [0006] 4) The terminal receives the downlink data sent by the base station sid...

Claims

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Application Information

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IPC IPC(8): H04L1/16H04L1/18H04L5/00H04W74/08
CPCH04L1/1607H04L1/18H04L5/0053H04W74/0833H04L1/16H04W74/08H04L5/00
Inventor 倪吉庆周伟左君王桂珍
Owner CHINA MOBILE COMM LTD RES INST
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