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A resource optimization method of a URLLC system based on a retransmission mechanism of a heuristic algorithm

A heuristic algorithm and resource optimization technology, applied in transmission systems, digital transmission systems, multiple use of transmission paths, etc., can solve problems such as algorithms not applicable to dynamic frame protocols, failure of wireless transmission process, low convergence efficiency, etc.

Active Publication Date: 2019-04-30
SHENZHEN UNIV
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Problems solved by technology

However, these traditional algorithms are not suitable for dynamic frame protocols because traditional algorithms suffer from low convergence efficiency caused by excessive constraints in optimization problems
[0005] In addition, there is no retransmission mechanism in the wireless transmission of the existing URLLC system with short frames. If the data transmission between two nodes fails, the entire wireless transmission process will fail, and the cost of data transmission and waste of resources

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  • A resource optimization method of a URLLC system based on a retransmission mechanism of a heuristic algorithm
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  • A resource optimization method of a URLLC system based on a retransmission mechanism of a heuristic algorithm

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[0027] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the drawings. In the following description, the same reference numerals are given to the same components, and repeated descriptions are omitted. In addition, the drawings are only schematic diagrams, and the ratio of dimensions between components, the shape of components, and the like may be different from the actual ones.

[0028] It should be noted that the terms "comprising" and "having" and any variations thereof in the present disclosure, such as a process, method, system, product or device that includes or has a series of steps or units, are not necessarily limited to the clearly listed instead, may include or have other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

[0029] figure 1 It is a schematic diagram showing control signaling and data transmission between nodes in the resource optimization method ...

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Abstract

The invention provides a resource optimization method of a URLLC system based on a retransmission mechanism of a heuristic algorithm. The method comprises the following steps: a first node and a second node perform wireless transmission through a plurality of frames, the first node obtains a false alarm probability based on a fourth frame and a hypothetical test condition, and obtains an optimal threshold based on a Neyman-Pearson theory to determine a detection probability; When the detection probability satisfies a system threshold, the first node sends a retransmission data frame, and calculates a frame error probability, a first reliability parameter and a second reliability parameter to determine a first throughput and a second throughput; When the first total transmitting energy, thesecond total transmitting energy, the information bit length of the source information and the frame length meet the requirements, based on mixed frog leaping-frame length, the first node and the second node adaptively distribute the transmitting power and the signal length of the pilot signal according to an extreme value optimization algorithm, so that the first throughput is maximized; And comparing the reliability parameter with a preset frame error probability to obtain a maximum first throughput or a maximum second throughput.

Description

technical field [0001] The present disclosure relates to the field of communication technology, and in particular to a resource optimization method of a URLLC system based on a retransmission mechanism of a heuristic algorithm. Background technique [0002] Ultra Reliable Low Latency Communications (URLLC), a new communication service class, will be supported in 5G New Radio (NR). In the communication protocol of 5G NR, there is wireless transmission with short frames. Among them, the frame length and transmission power are both adjustable. [0003] When considering the resource allocation problem, the resource allocation problem can be formulated as an optimization problem to obtain the optimal parameters of the considered protocol. However, since the optimization problem is neither convex nor concave, and contains too many constraints, it is difficult to obtain the global optimal result. [0004] Although optimization problems can be solved by traditional heuristic algo...

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Application Information

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IPC IPC(8): H04W24/02H04L1/16H04L5/00
CPCH04L1/1607H04L5/0048H04L5/0053H04W24/02
Inventor 谢宁胡吉
Owner SHENZHEN UNIV
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