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Duplication transmission configuration method and device and duplication transmission method and device

A technology of repeated transmission and configuration method, applied in transmission system, digital transmission system, error prevention/detection through transmission repetition, etc., can solve problems such as no good solution, achieve high reliability, improve use efficiency, avoid The effect of wasting resources

Active Publication Date: 2017-11-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reasonable application of the repeated transmission mechanism is required, but the deficiency of the existing technology is that there is no good solution at present

Method used

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  • Duplication transmission configuration method and device and duplication transmission method and device
  • Duplication transmission configuration method and device and duplication transmission method and device
  • Duplication transmission configuration method and device and duplication transmission method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0130] In this example, the repeated transmission of radio bearers takes effect after configuration.

[0131] Base station side:

[0132] Step 1: Use RRC signaling to perform repeated transmission configuration on the terminal radio bearer. The radio bearer may be a signaling radio bearer (SRB) (Signalling Radio Bearer, signaling radio bearer) or a data radio bearer (DRB) (Data Radio Bearer, data radio bearer), The transmission direction of the radio bearer can be downlink or uplink. The repeated transmission configuration signaling indicates two logical channels for repeated transmission corresponding to the bearer, and the two logical channels are always activated after configuration, that is, they cannot be deactivated. activation.

[0133] Step 2: For downlink transmission, the base station performs repeated transmission on the two logical channels configured for the radio bearer; for uplink transmission, the base station performs uplink resource allocation on the two log...

Embodiment 2

[0138] In this example, the repeated transmission function (only for uplink transmission) may be activated or deactivated after the repeated transmission of the radio bearer is configured.

[0139] Base station side:

[0140] Step 1: Perform repeated transmission configuration on the terminal radio bearer by using RRC signaling, and the repeated transmission configuration signaling indicates two uplink logical channels for repeated transmission corresponding to the bearer. The configuration signaling includes: the initial state of the uplink logical channel, that is, the transmission state is active or inactive; the repeated transmission of the bearer can be activated or deactivated by MAC signaling.

[0141] Step 2: the base station performs uplink resource scheduling for the terminal.

[0142] Step 3: When the base station needs to change the current repeated transmission state, it sends MAC signaling to the terminal, indicating to activate or deactivate the logical channel...

Embodiment 3

[0154] In this example, two radio bearers are configured with repeated transmission, one is continuously valid for repeated transmission, and the other can be activated or deactivated for repeated transmission (uplink transmission).

[0155] Base station side:

[0156] Step 1: The base station configures two radio bearers for the terminal, the repeated transmission of RB1 is always activated, and the repeated transmission of RB2 can be activated or deactivated by MAC signaling.

[0157] Step 2: When the base station needs to change the retransmission status of RB2, it issues a MAC command to activate or deactivate retransmission to the terminal. This MAC command is aimed at the terminal, but it only takes effect on RB2 and not on RB1.

[0158] Terminal side:

[0159] Step 1: The terminal accepts the configuration of the base station, and determines the initial status of the two radio bearers configured with repeated transmission, and whether activation or deactivation is all...

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Abstract

The invention discloses a duplication transmission configuration method and device and a duplication transmission method and device. The duplication transmission configuration method comprises the steps of determining each radio bearer of a terminal; and carrying out duplication transmission configuration for each radio bearer. The duplication transmission method comprises the steps that the terminal receives the duplication transmission configuration carried out at a network side; and carrying out duplication transmission according to the configuration. Through adoption of the methods and the devices, the duplication transmission can be applied flexibly for different bearer characteristics; the high reliability provided by the duplication transmission can be obtained; moreover, the utilization efficiency of radio resources can be improved; and resource waste is avoided; and air interface control signal costs are reduced.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and in particular to a repeated transmission configuration and a repeated transmission method and device. Background technique [0002] The 5G NR (next generation Radio) system mainly supports three types of services: [0003] eMBB (enhanced Mobile Broadband, enhanced broadband communication), mMTC (massive MachineType Communications, a large number of machine type communications), URLLC (Ultra-Reliable and Low Latency Communications, high reliability and low latency communications). [0004] For URLLC, due to its relatively high requirements on delay and reliability, a solution given by 3GPP is to introduce a repeated transmission mechanism, that is, to transmit the same PDCP (Packet Data Convergence Protocol, packet data aggregation) through multiple paths. Protocol) layer PDU (Protocol Data Unit, Protocol Data Unit), improves transmission reliability and reduces transmi...

Claims

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Application Information

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IPC IPC(8): H04L1/18
CPCH04L1/1858H04L1/189H04L1/08H04W76/15H04W28/0252H04W28/04H04W76/11H04W76/27H04W80/02
Inventor 谌丽
Owner DATANG MOBILE COMM EQUIP CO LTD
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