Uplink transmission method for periodic URLLC service

A transmission method and service technology, which is applied in the field of uplink transmission, can solve problems such as the inability to guarantee the normal operation of URLLC services, and achieve the effect of simple operation

Active Publication Date: 2019-08-13
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In URLLC uplink transmission, due to the extremely stringent performance requirements of URLLC (1ms end-to-end delay, 99.999% transmission reliability) and the limitation of uplink transmission resources (time, bandwidth, transmit power), the traditional The transmission scheme of the base station's uplink authorization cannot guarantee the normal operation of URLLC services; especially in terms of delay, too much control signaling interaction between the base station and the device makes the 1ms end-to-end delay an impossible event

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  • Uplink transmission method for periodic URLLC service
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  • Uplink transmission method for periodic URLLC service

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Embodiment Construction

[0038] The present invention is described in further detail below in conjunction with accompanying drawing:

[0039] The uplink transmission method oriented to periodical class URLLC services of the present invention comprises the following steps:

[0040] 1) Establish a system model

[0041] In a single-cell scenario, suppose one has M r The multi-antenna base station with the root receiving antenna is located in the center of the cell, and K single-antenna devices carrying periodic URLLC services are evenly distributed in the cell. In each data transmission cycle, all devices upload a data packet of size L bits to the base station at the same time, and the maximum transmission power of each device is p max . In this system model, SC-FDMA is used as the uplink multiple access method; since all devices have the same delay and reliability requirements, based on the principle of proportional fair subcarrier allocation, the same number of one Clustered subcarriers are divided...

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Abstract

The invention discloses an uplink transmission method for a periodic URLLC (Uniform Resource Location Link Control) service. The uplink transmission method comprises the following steps: 1) constructing a URLLC uplink transmission model; 2) constructing a URLLC service uplink transmission QoS guarantee mechanism based on a finite coding length theory; 3) by formulating a reasonable sub-channel-power joint distribution strategy, while the uplink transmission QoS of all devices in the system is guaranteed, the required total transmitting power is minimized, so that an edge adaptive optimizationproblem is constructed; and 4) respectively solving the edge adaptive optimization problem in the step 3) through a Kuhn-Munkres algorithm based on a weighted bipartite graph theory or a low-complexity algorithm based on greedy selection, and obtaining an optimal sub-channel-power distribution strategy, and completing uplink transmission of the periodic URLLC service according to the optimal sub-channel-power distribution strategy. The method can be suitable for uplink transmission of the periodic URLLC service.

Description

technical field [0001] The invention belongs to the technical field of uplink transmission in ultra-reliable low-delay communication, and relates to an uplink transmission method oriented to periodical URLLC services. Background technique [0002] As one of the three major 5G scenarios, Ultra-Reliable Low-Latency Communication (URLLC) corresponds to real-time key control services represented by autonomous driving, industrial control, telemedicine and Tactile Internet. The performance index of URLLC mainly includes two parts: delay and reliability. The delay refers to the end-to-end delay of the user plane, that is, the total delay experienced by the data packet from being generated to being successfully received and correctly decoded; 3GPP has clearly stipulated the delay index of URLLC: user plane end-to-end The delay shall not exceed 1ms. Reliability, that is, the probability of successfully transmitting and correctly receiving a data packet with a size of X bytes within...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/08
CPCH04W72/0473H04W72/21H04W72/54Y02D30/70
Inventor 任品毅谢云聪王熠晨王璋楠
Owner XI AN JIAOTONG UNIV
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