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Data transmission method and terminal

A data transmission method and terminal technology, applied in the field of communication, can solve the problems that data cannot be received correctly, cannot be established, etc.

Pending Publication Date: 2019-08-16
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a data transmission method and a terminal, which solves the problem that the receiving terminal cannot correctly receive data due to the inability to establish the same PDCP / RLC entity mapping relationship as the sending terminal under the PDCP repetition mechanism in the terminal direct connection scenario in the prior art. The problem

Method used

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  • Data transmission method and terminal
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  • Data transmission method and terminal

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Embodiment Construction

[0094] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments. In the following description, specific details, such as specific configurations and components, are provided only to assist in a comprehensive understanding of the embodiments of the present invention. Accordingly, those of ordinary skill in the art should recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0095] It should be understood that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic related to the embodiment is included in at least one embodiment of t...

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Abstract

The invention provides a data transmission method and a terminal. The method comprises the following steps: obtaining a mapping relation between a packet data convergence protocol (PDCP) entity and aradio link layer control (RLC) entity of a target radio bearer of a sending terminal; and after a media access control MAC layer protocol data unit (PDU) is received, determining a target PDCP entityto which data carried by the MAC layer PDU belongs according to a mapping relationship between the PDCP entity and the RLC entity, wherein the target radio bearer is a direct communication link bearerconfigured by the sending terminal or activated with a PDCP repetition function. The receiving terminal acquires a mapping relation between a PDCP entity and an RLC entity of a target radio bearer ofa sending terminal, the mapping relation between the PDCP entity and the RLC entity which are consistent with the sending terminal can be established, thereby ensuring that the target radio bearer of the sending terminal can be correctly received by the receiving terminal, and ensuring the reliability of data transmission in a direct communication mode.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a data transmission method and a terminal. Background technique [0002] Compared with previous mobile communication systems, future 5G mobile communication systems need to adapt to more diverse scenarios and business requirements. The main scenarios of 5G include enhanced Mobile Broadband (eMBB) communications, massive Machine Type Communications (mMTC), ultra-reliable and low-latency communications (Ultra-Reliable and Low Latency Communications, URLLC), These scenarios put forward requirements for the system such as high reliability, low latency, large bandwidth, and wide coverage. [0003] Among them, for the URLLC service, due to its relatively high requirements on delay and reliability, a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) duplication mechanism can be introduced, that is, the same PDCP is transmitted through multiple p...

Claims

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Application Information

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IPC IPC(8): H04W28/06H04W72/04H04L5/00
CPCH04W28/065H04W76/12H04W76/15H04W76/22H04W76/27H04L5/0053H04W72/20
Inventor 赵亚利
Owner DATANG MOBILE COMM EQUIP CO LTD
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