A resource allocation method for energy harvesting d2d communication based on reinforcement learning

A technology for communication resource allocation and energy collection, which is applied in network traffic/resource management, wireless communication, energy consumption reduction, etc., to achieve the effects of reducing medium probability, improving coverage, and increasing target user capacity

Active Publication Date: 2022-06-28
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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Problems solved by technology

[0003] However, when D2D communication and traditional cellular communication use the same spectrum resources, there is mutual interference between D2D users and cellular users, so reasonable interference management is required in the D2D communication system

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  • A resource allocation method for energy harvesting d2d communication based on reinforcement learning
  • A resource allocation method for energy harvesting d2d communication based on reinforcement learning
  • A resource allocation method for energy harvesting d2d communication based on reinforcement learning

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Embodiment Construction

[0039] The overall flow chart of the energy harvesting D2D communication resource allocation method based on reinforcement learning studied in the present invention is as follows: figure 1 shown, including the following steps:

[0040] 1. Establish the optimization problem of maximizing the total capacity of downlink cellular users and D2D users in Mode B:

[0041] like figure 2 As shown, considering the single-cell model, the cell includes a base station located in the center of the cell, I uplink cellular users, M downlink cellular users and N pairs of D2D users, with UCU={UCU 1 ,...,UCU i ,...,UCU I }, DCU={DCU 1 ,...,DCU m ,...,DCU M } and DU = {DU 1 ,...,DU n ,...,DU N } represents the uplink cellular user set, downlink cellular user set and D2D user set, respectively, where UCU i , DCU m and DU n respectively represent uplink cellular user i, downlink cellular user m and D2D user n, each D2D user pair includes a D2D transmitter and a D2D receiver.

[0042] ...

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Abstract

The invention discloses an energy collection D2D communication resource allocation method based on reinforcement learning. In this method, the D2D sender uses mode A to directly communicate with the D2D receiver, or adopts mode B to serve as a relay to assist cellular communication while using NOMA technology to communicate with the D2D receiver. Firstly, the outage probability expression when users communicate in different modes is derived; then, assuming that the energy harvesting and channel state information at all times are known, the KM algorithm is used to allocate channels for D2D users and select relays for cellular users, while considering energy causality Constraints and maximum transmit power limits, using reinforcement learning methods to optimize the transmit power of D2D users. The present invention considers that the D2D sending end can act as a relay to assist edge cellular users in communication, optimize the resource allocation of D2D users and cellular users under the conditions of satisfying user service quality and energy constraints, and can increase the total capacity of D2D users and mode B cellular users. Allow more edge cellular users to access the network.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to an energy harvesting D2D communication resource allocation method based on reinforcement learning. Background technique [0002] With the development of Internet technology, more and more users need to access the wireless network. However, spectrum resources are limited. How to use the limited spectrum resources to enable more users to conduct wireless communication has become an urgent problem to be solved. D2D communication allows the establishment of a direct communication link between two user terminals that are physically close to each other, and enables point-to-point communication by reusing the licensed frequency bands of the cellular network. Due to shared spectrum resources, D2D communication allows more user terminals to access the network. Relay technology can improve the coverage of a cell by receiving and forwarding signals. Combining D2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W28/02H04W72/08H04B17/336H04B17/382
CPCH04W28/0221H04W28/0236H04W24/02H04B17/336H04B17/382H04W72/542Y02D30/70
Inventor 朱琦苏娜
Owner NANJING UNIV OF POSTS & TELECOMM
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