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Non-orthogonal multiple access based mobile edge computing linear search type time delay optimization method in multiple base station scenarios

A non-orthogonal multiple access and linear search technology, applied in access restriction, wireless communication, electrical components, etc., can solve problems such as excessive system delay

Active Publication Date: 2019-03-26
ZHEJIANG UNIV OF TECH
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Problems solved by technology

Aiming at the difficulty of excessive system delay, the present invention studies the calculation delay optimization problem and the communication delay optimization problem of mobile edge computing offloading based on non-orthogonal multiple access in multi-base station scenarios

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  • Non-orthogonal multiple access based mobile edge computing linear search type time delay optimization method in multiple base station scenarios
  • Non-orthogonal multiple access based mobile edge computing linear search type time delay optimization method in multiple base station scenarios
  • Non-orthogonal multiple access based mobile edge computing linear search type time delay optimization method in multiple base station scenarios

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Embodiment Construction

[0116] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0117] refer to figure 1 , a non-orthogonal multiple access-based mobile edge computing binary search delay optimization method in a multi-base station scenario. The implementation of this method can minimize the total system delay on the premise of meeting the data requirements at the same time. Improve the wireless network experience quality of the entire system. The present invention is applied to wireless networks, such as figure 1 in the scene shown. Designing an optimization method for this problem includes the following steps:

[0118] (1) There is a mobile user i under the coverage of a group of base stations integrated with edge servers, and the base station uses the set It means that mobile users use non-orthogonal multiple access technology to send data to the base station at the same time, and the amount of data that mobile users need to proc...

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Abstract

The invention discloses a non-orthogonal multiple access based mobile edge computing linear search type time delay optimization method in multiple base station scenarios. The method comprises the following steps: (1) describing the optimized problem as a problem of multi-variable non-convex optimization when 1 mobile user exists under the coverage range of BSs of an integrated edge server; (2) resolving the problem (DM-i) into a problem of two-level optimization; (3) proposing a Lagrange multiplier method based bi-search method according to a bottom level DM-i-E-Sub problem, to optimize an overall time delay of the mobile user i in the case of the mobile user i with a transmission time t; (4) proposing a linear search method aiming at a top level DM-i-E-Top problem, to optimize the transmission time t of the mobile user i; (5) finally solving the problem (DM-i) through an interactive iteration of the bottom level problem and the top level problem. According to the non-orthogonalmultiple access based mobile edge computing linear search type time delay optimization method in multiple base station scenarios, the system transmission efficiency is improved, the bandwidth resources are saved, and a better wireless network experience is obtained.

Description

technical field [0001] The invention relates to a non-orthogonal multiple access-based mobile edge computing linear search delay optimization method in a multi-base station scenario in a wireless network. Background technique [0002] The rapid development of cellular systems and mobile Internet services has produced a variety of computing-intensive applications, putting great pressure on mobile terminals with limited computing resources. Mobile edge computing (Mobile Edge Computing, MEC) enables mobile users (Mobile Users, MUs) to offload their computing tasks to cloud servers (such as base stations (Base Stations, BSs)) located at the edge of the cellular network. Challenging problems offer a promising approach. Considering the advantages of high transmission efficiency provided by Non-orthogonal Multiple Access (NOMA), we propose a linear search formula for mobile edge computing based on Non-orthogonal Multiple Access in multi-base station scenarios Latency optimization...

Claims

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Application Information

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IPC IPC(8): H04W48/16H04W56/00H04B1/7097
CPCH04B1/7097H04W48/16H04W56/004
Inventor 吴远倪克杰陈相旭张成钱丽萍黄亮
Owner ZHEJIANG UNIV OF TECH
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