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Machine type communication resource allocation method based on external property and matching algorithm

A machine-type communication and resource allocation technology, applied in the field of resource allocation optimization algorithms, can solve problems such as co-channel interference and MTD co-channel interference

Active Publication Date: 2019-09-10
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, sharing spectrum between CUs and MTDs in this communication mode will lead to co-channel interference between them
In addition, if one RB is multiplexed by multiple MTDs, there will be co-channel interference between MTDs

Method used

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  • Machine type communication resource allocation method based on external property and matching algorithm
  • Machine type communication resource allocation method based on external property and matching algorithm
  • Machine type communication resource allocation method based on external property and matching algorithm

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Embodiment Construction

[0061] The embodiment of the present invention is divided into two steps, the first step is to build a model, and the second step is to implement the algorithm. Among them, the established system model is as figure 1 As shown, it completely corresponds to the introduction of the MTD communication network system model diagram based on a single cellular network in the summary of the invention.

[0062] 1) For the system model, a base station equipped with omnidirectional antennas is located at the center of the cellular network, and MTDs are randomly distributed around. A channel model with block fading properties is adopted, which considers that the channel state is fixed within a given time block and varies independently between different time blocks. Using orthogonal partitioning of cellular network spectrum resources, each CU transmits on a single sub-channel or RB. Considering the uplink spectrum reuse scenario, each MTD n By multiplexing at most one cellular user C k R...

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Abstract

The invention relates to a high-energy-efficiency resource allocation optimization method applied to a smart power grid machine type communication scene, and aims to solve the problem of scarcity of frequency spectrum resources and allow a large number of machine devices (MTDs) to multiplex the frequency spectrum resources allocated to cellular users (CUs). Through combined optimization of channelselection and power control, the energy efficiency (EE) maximization problem of the MTDs is studied. The invention provides a two-stage optimization algorithm based on external many-to-one matching.Firstly, each MTD is temporarily allocated to a predefined transmission power, then the problem of channel selection optimization is solved through a matching algorithm considering the external property, and a two-dimensional matching relation between the MTD and a resource block (RB) is obtained; and then, according to the established matching relationship, the transmission power of the MTD is optimized by adopting nonlinear fractional programming, so that the spectrum utilization rate is effectively improved and the communication network EE is maximized. An optimal allocation scheme of the spectrum resources is obtained.

Description

technical field [0001] The invention belongs to the field of wireless communication, and specifically relates to an energy-efficient resource allocation optimization algorithm applied in a smart grid machine-type communication scenario. Through joint optimization of channel selection and power control, the energy efficiency (EE )maximize. First, the two-dimensional matching relationship between MTD and resource block (RB) is established by combining the matching model with externalities; then, the transmission power of MTD is optimized through nonlinear fractional programming, so as to effectively improve spectrum utilization and maximize communication network EE . In order to obtain the optimal allocation scheme of spectrum resources. [0002] Background technique: [0003] Machine type communication plays an important role in the smart grid. As a new communication method, machine type communication can realize seamless integration with 4G or 5G cellular network. It has ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/70H04W24/02H04W72/04H04W72/08H04W72/54
CPCH04W4/70H04W24/02H04W72/0453H04W72/0473H04W72/542Y02D30/70
Inventor 孔文萱周振宇黄毕尧
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)