Energy efficiency joint optimization method in MU-MIMO wireless energy/data transmission
A wireless energy and data transmission technology, applied in radio transmission systems, transmission monitoring, wireless communication, etc., can solve the problems of data transmission rate impact, complex optimization problems, reduce the advantages of MIMO technology energy consumption optimization, etc., to expand the scope of application, The effect of improving energy efficiency
Active Publication Date: 2017-12-01
CERTUS NETWORK TECHNANJING
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Problems solved by technology
Energy consumption optimization involves two aspects: ① Optimization target selection problem
However, in addition to the impact of power on the data transmission rate in the MIMO system, the number of space division channels (depending on the number of user terminal antennas) will also affect the data transmission rate
Therefore, the degree of freedom of the system is greater, resulting in an optimization problem that is too complex
Therefore, the existing literature assumes that there is only one antenna in the user terminal, and simplifies the MIMO system into a MISO system, which greatly reduces the advantages of MIMO technology in terms of energy consumption optimization.
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[0018] 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.
[0019] Such as Figure 1 to Figure 5 As shown, this embodiment is a method for resource allocation in a multi-user MIMO wireless energy / data transmission system, the method includes the following steps:
[0020] Step 1. Analyze system workflow protocol
[0021] Such as figure 1 As shown, the entire multi-user MIMO wireless energy / data transmission system works periodically in time slots, and the time slot length is T. During the first τ time of each time slot, the system performs downlink wireless energy transmission; during the later (T-τ) time, the system performs uplink data transmission. τ ...
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The invention discloses an energy efficiency joint optimization method in MU-MIMO wireless energy / data transmission. The method takes the uplink / downlink work switching point and the base station sending power into consideration, and comprises the following steps: a user terminal firstly receives the energy sent from a base station, and then sends the data by using the energy to the base station. The optimization target of the method is the maximum system energy efficiency, the maximum system energy efficiency represents that the system can perform the most data transmission by using the least energy, and shows the optimization of the system. In the system energy efficiency optimization process, the problem is subjected to equivalence by using the Lagrangian duality theory, and then the problem is resolved by using an iteration algorithm based on the Dinkelbach algorithm, thereby acquiring the optimal energy efficiency.
Description
technical field [0001] The invention belongs to resource management in the field of wireless communication networks, in particular to power and time resource management technology, and specifically relates to a wireless energy / data In the transmission system, an energy efficiency optimization method that takes into account the switching point of the uplink and downlink, the transmit power of the base station, and the user throughput. Background technique [0002] In recent years, with the development of the Internet of Things, wireless energy / data transmission systems have attracted the attention of many research institutions. In this system, the base station only transmits energy to the terminal through wireless signals. The terminal generally does not have a fixed energy supply device, or its own functional device can only maintain its active state, and the uplink data transmission of the terminal can only It does this by receiving the energy transmitted by the base stati...
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Patent Timeline
Login to View More IPC IPC(8): H04B7/0404H04B7/0452H04B17/345H04B17/391H04W52/14H04W52/24H04W52/26H04W52/34
CPCH04B7/0404H04B7/0452H04B17/345H04B17/391H04W52/14H04W52/243H04W52/267H04W52/346
Inventor 潘甦陈剑南
Owner CERTUS NETWORK TECHNANJING