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Data transmission method, terminal and computer readable medium

A data transmission and terminal technology, applied in the field of communication, can solve the problems of uplink transmission interference, occupying uplink resources, unable to know the timing of different RVs that repeatedly send TBs for many times, etc., and achieves the effect of improving reliability.

Inactive Publication Date: 2019-02-12
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this scenario, if the TTI bundling function is configured for the UE, the UE cannot know the timing of repeatedly sending different RVs of the TB multiple times. If it is sent continuously, it will occupy the uplink resources of another system and affect other RVs in the other system. UE's uplink transmission generates interference

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  • Data transmission method, terminal and computer readable medium
  • Data transmission method, terminal and computer readable medium
  • Data transmission method, terminal and computer readable medium

Examples

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Embodiment Construction

[0032] In order to improve uplink coverage, 3GPP has introduced the TTI bundling function, which allows the UE to send different RVs of the same TB multiple times on multiple consecutive subframes without waiting for feedback. For example, such as figure 1 As shown, in the FDD system, when the base station configures the TTI bundling function for the UE, the base station sends downlink control information (Downlink Control Information, DCI, also known as downlink control signaling) format 0 to the UE in subframe 0, which is used to instruct the UE Resources occupied for uplink data transmission. After receiving DCI 0, the UE sends TB data for the first time in subframe 4 (RV is a) through the Physical Uplink Shared Channel (PUSCH), and then sends the RV of the same TB in subframes 5, 6, and 7 in turn b, RV c and RV d. Among them, RV a, RV b, RV c, and RV d are different redundancy versions of the same TB. After that, the UE receives the ACK / NACK sent by the base station throu...

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Abstract

The invention provides a data transmission method, a terminal and a computer readable medium. The data transmission method comprises the following steps: when transmitting uplink data, UE sends different redundancy versions of the same transmission block to a base station according to indication information of a gap between the different redundancy versions of the same transmission block. By application of the above scheme, the UE can apply a TTI binding function and repeatedly send the different redundancy versions of the same transmission block according to the indication information so as to improve the uplink transmission reliability.

Description

Technical field [0001] The embodiments of the present invention relate to the field of communications, and in particular to a method, terminal, and computer-readable medium for data transmission. Background technique [0002] For terminal equipment (User Equipment, UE) with low transmit power, the uplink coverage (Uplink Coverage) is relatively small, especially when it is located at the edge of a cell, and normal VOIP services cannot be guaranteed. In order to improve the coverage of the cell edge services, the 3rd Generation Partnership Project (3GPP) introduced TTI bundling (TTI bundling, where TTI is the transmission time interval, Transmission Time Interval) function, which allows UEs to The technology of sending different redundancy versions (Redundancy Version, RV) of the same transport block (Transport Block, TB) multiple times in a continuous subframe without waiting for ACK / NACK feedback. After the base station receives the multiple RV combination processing of the TB,...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04L1/16H04L5/00
CPCH04L1/1607H04L5/0007H04L5/0053H04W72/21
Inventor 邓云
Owner SPREADTRUM COMM (SHANGHAI) CO LTD