D2D communication resource allocation method for improving graph coloring

A technology of communication resource allocation and graph coloring, applied in wireless communication, transmission monitoring, electrical components, etc., can solve problems such as system performance degradation, user interference, and affecting the battery life of user-end equipment.

Active Publication Date: 2021-01-05
BINZHOU POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER +1
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Problems solved by technology

However, when D2D communication is introduced into the cellular network, the multiplexing of cellular user channels will cause serious interference, resulting in system performance degradation and affecting the battery life of user equipment. Therefore, the problem of D2D resource allocation has aroused widespread concern in the society.
[0003]Currently, D2D users and cellular users uplink resources are reused, thus greatly improving network spectrum utilization, but at the sam

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  • D2D communication resource allocation method for improving graph coloring
  • D2D communication resource allocation method for improving graph coloring
  • D2D communication resource allocation method for improving graph coloring

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Embodiment Construction

[0044] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0045] Such as figure 1 As shown, a D2D communication resource allocation method for improving graph coloring provided by the present invention includes the following steps:

[0046] S1: Calculate the SINR of cellular users and D2D users, the calculation steps are as follows:

[0047]

[0048]

[0049]

[0050]

[0051] in, Indicates the signal-to-interference-noise ratio of cellular user k, Indicates the SINR of D2D user i; respectively represent the minimum signal-to-interference-noise ratio thresholds of cellular users and D2D users; is the transmit power of cellular user k, The size of is between the maximum transmit power of the cellular user and the minimum transmit power of the ...

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Abstract

The invention relates to a D2D communication resource allocation method for improving graph coloring, and the method comprises the following steps: S1, calculating the signal-to-interference-and-noiseratio of cellular users and D2D users; S2, calculating a safety distance di between D2D users; S3, determining a D2D user set of which the D2D users can share the same channel; S4, constructing a D2Duser multiplexing relation graph; S5, grouping the D2D users according to an improved graph coloring principle in combination with accumulated interference among the D2D users; and S6, allocating channel resources to each multiplexing group by using a Hungary algorithm; According to the method, the throughput of the cellular system and the access rate of the D2D users are improved, the resource utilization rate is effectively optimized, the interference between the D2D users can be reduced, and the service quality of D2D communication is ensured.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a device-to-device (D2D) communication resource allocation method, in particular to a device-to-device (D2D) communication resource with improved graph coloring Allocation method. Background technique [0002] With the rapid development of 5G mobile communications and network data services, large-scale smart terminals are constantly emerging, and wireless spectrum resources are becoming increasingly tight. The lack of spectrum resources has become a restrictive factor for the future development of wireless communications. In order to improve the communication quality of users, solve the problem of insufficient spectrum resources, and at the same time improve the throughput and access rate of mobile cellular systems, Device-to-Device (D2D) communication has been proposed. D2D communication technology allows adjacent mobile terminals to use operator-licensed spectrum ...

Claims

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Application Information

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IPC IPC(8): H04W72/08H04B17/336H04B17/382
CPCH04B17/336H04B17/382H04W72/541H04W72/542Y02D30/70
Inventor 范康康杜宁宁付云磊周伟黄华左长华刘向波潘志鹏马莉李晓光王兆敏
Owner BINZHOU POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER
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