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Resource allocation method of distributed wireless energy and information transmission system

An information transmission system and wireless energy technology, which is applied in the field of resource allocation of distributed wireless energy and information transmission systems, can solve the problem of wireless energy attenuation, consume more energy, and centralized antenna systems are difficult to meet user speed and energy requirements and other issues, to achieve the effect that is conducive to the implementation and reduces the complexity of the implementation

Active Publication Date: 2018-09-11
NANJING UNIV
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Problems solved by technology

Since wireless energy attenuates sharply with the increase of transmission distance, users far away from the base station cannot obtain high energy harvesting efficiency
In addition, users who are far away from the base station tend to consume more energy to send information
Therefore, this "centralized" wireless energy supply will cause users far away from the base station to suffer from the "double near-far effect"
[0004] Most of the current research works use the traditional centralized antenna system. When the number of users increases, the centralized antenna system is difficult to meet the user's requirements for speed and energy.

Method used

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  • Resource allocation method of distributed wireless energy and information transmission system
  • Resource allocation method of distributed wireless energy and information transmission system
  • Resource allocation method of distributed wireless energy and information transmission system

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Embodiment Construction

[0043] Such as figure 1 As shown, the system we consider includes 1 computing center, M RRHs, and S subscriber units. In order to solve the problem of "double near-far effect" in the wireless energy and information transmission system, the present invention adopts a distributed antenna system structure in the wireless energy and information transmission system. Distributed antenna systems are considered to be a key technology for future mobile communications. In the present invention, a plurality of RRHs are distributed in a larger range, and all RRHs are connected to the computing center in a wireless manner. Compared with the wired connection method, the wireless method can avoid the cost of laying optical fiber or coaxial cable, thereby reducing costs and increasing practicability. Compared with the traditional centralized antenna system, the distributed antenna system can make the RRHs as close as possible to the wireless user terminals, thus improving the energy transfe...

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Abstract

The invention discloses a resource allocation method of a distributed wireless energy and information transmission system. The distributed wireless energy and information transmission system comprisesa computing center, M RRHs, and S user units. The method comprises the following steps: the M RRHs simultaneously send radio frequency signals to charge S users; on an uplink of RRH-user unit, the user units transmit information to the RRHs closest to the user units in a time division multiple access mode by using the energy received on a downlink; and the user information received by the RRHs issent to the computing center in the time division multiple access mode. By adoption of the resource allocation method disclosed by the invention, the system obtains the maximum throughput under the condition of meeting the power constraints of the RRHs and the causal constraints of the computing center, the RRHs and the user units.

Description

technical field [0001] The present invention belongs to the field of wireless communication, and specifically relates to a resource allocation method of a distributed wireless energy and information transmission system, and more specifically relates to a distributed wireless energy and information transmission system based on an Alternating Direction Method of Multipliers (ADMM) algorithm. Resource allocation method for information transmission system. Background technique [0002] In large-scale sensor networks, it is impractical and difficult to manually replace batteries for sensor nodes that are depleted of energy. Conventional renewable energy sources such as solar and wind power cannot provide a stable energy supply for the sensor. In addition to traditional solar and wind energy, electromagnetic waves that transmit communication signals are also energy carriers. It is an effective way to solve the energy supply problem of sensor nodes by using electromagnetic waves ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H02J50/20
CPCH02J50/20H04W72/0473H04W72/53
Inventor 唐岚林晨晨
Owner NANJING UNIV
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