A base station and wireless information and energy cooperative transmission system
A base station and energy technology, which is applied in the direction of radio transmission system, transmission system, radio relay system, etc., can solve the problems of not considering the real-time service quality of the user end, and achieve real-time service quality, effective communication, and high energy efficiency. The effect of co-transmission with information
Active Publication Date: 2022-04-15
HUAZHONG UNIV OF SCI & TECH
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But it only pursues the maximization of system throughput, without considering the real-time service quality of the client
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[0041]In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0042] Based on intelligent reflective surface to assist wireless information and energy transmission process such as figure 1 As shown, the base station transmits information and energy at the same time. Firstly, through the split beamforming design, the energy transmission of the base station to the intelligent reflector and the information transmission of the communication user are respectively realized; t...
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The invention discloses a base station and a wireless information and energy cooperative transmission system, belonging to the field of wireless communication. Including: according to the user's real-time service quality requirements, determine the time factor τ and power factor ρ, take τT as the first stage, take (1‑τ)T as the second stage, and set P t Divided into ρP t and (1‑ρ)P t ; In the first stage, the energy transfer beam w E The energy ρP t Transmitted to smart reflectors for energy transfer and at the same time transmit w via information beams I The energy (1‑ρ)P t Passed to the user end for signal transmission; in the second stage, through the information transmission beam w u Transfer all energy to the user end. The invention adopts the combination of time switching and power distribution, and time switching realizes the state switching of the intelligent reflective surface, which plays a key role in the energy absorption of the intelligent reflective surface and the energy efficiency of the system; the power distribution ensures the real-time service quality of the user end, and improves the energy of the intelligent reflective surface in the energy absorption stage The collection has a major impact on the energy absorption of the smart reflector, the quality of service at the user end, and the energy efficiency of the system.
Description
technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to a base station and a wireless information and energy coordinated transmission system. Background technique [0002] In order to realize energy-efficient communication systems, passive transmission modes based on low-energy, low-cost smart reflectors are considered to be one of the most potential and revolutionary technologies. The existing information and energy collaborative transmission system has problems such as limited system capacity and low system energy efficiency, which are assisted by introducing intelligent reflective surfaces. Patent CN112332548A "a wireless energy transmission method and system" applies intelligent reflective surfaces to the field of energy transmission, and proposes the design of energy beams and the energy transmission mechanism of first absorption and then reflection to achieve efficient energy transmission. However, this pat...
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IPC IPC(8): H04W72/08H04W72/04H04B7/145H04B7/06H04B7/0426H02J50/20H04W72/54
CPCH04W72/0446H04W72/0473H04B7/145H04B7/0617H04B7/0426H02J50/20H04W72/543H04W72/542H04B7/04013
Inventor 程亚军彭薇江涛
Owner HUAZHONG UNIV OF SCI & TECH