A joint optimization method for user multi-association and downlink power allocation in mmWave networks
A joint optimization, millimeter wave technology, applied in the field of wireless local area network, can solve problems such as load balancing without considering service quality balancing
Active Publication Date: 2022-07-12
WENZHOU UNIV
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[0004] However, the above-mentioned joint optimization methods of user association (UA) and performance have shortcomings. The shortcoming is that only user multi-association (MCUA) is considered, but service quality balance among all users and multiple user associations are not considered. Load Balancing Between Millimeter Wave Base Stations (mBSs)
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[0056] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.
[0057] like figure 1 As shown, it is a joint optimization method for user multi-association and downlink power allocation in a millimeter-wave network proposed in an embodiment of the present invention, and the method includes the following steps:
[0058] Step S1: Obtain the location of the user and the millimeter-wave base station in the millimeter-wave network, determine the correlation between each user and the corresponding millimeter-wave base station, and further combine the unit gain inside and outside the antenna beam of each user and its relationship with the associated millimeter-wave base station. According to the signal transmission power, signal transmission distance, signal wavelength, bandwidth and noise power, the reachable rate of each user an...
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The invention provides a joint optimization method for user multi-association and downlink power allocation in a millimeter-wave network, including obtaining the positions of users and a millimeter-wave base station in a millimeter-wave network, and determining the association between each user and the corresponding millimeter-wave base station, And further calculate the reachable rate of the user and the transmit power of the millimeter-wave base station; construct the decision variables based on the user association and the transmit power of the millimeter-wave base station to maximize the overall energy efficiency of the system and minimize the standard deviation of the reachable rates of all users A multi-objective optimization function with the goal of minimizing the standard deviation of the load rates of all millimeter-wave base stations; the preset NSGA-II algorithm is used to find the optimal solution for the decision variables; according to the optimal solution of the decision variables, the final multi-objective optimization function is obtained solution and output. The implementation of the present invention not only considers the multi-relatedness of users, but also balances the reachable rate of all users and the load rate of all millimeter-wave base stations while achieving the maximum overall energy efficiency of the system.
Description
technical field [0001] The invention relates to the technical field of wireless local area networks, in particular to a joint optimization method for user multi-association and downlink power allocation in a millimeter wave network. Background technique [0002] Millimeter-wave (mmWave) spectrum has been introduced into fifth-generation mobile communications as spectrum resources become increasingly scarce. The millimeter-wave band provides huge spectrum resources, and the channel capacity can be greatly improved through a variety of multiplexing techniques. However, due to the extremely high frequency and serious path loss, the signal in the millimeter wave band is easily affected by obstacles such as buildings, the atmosphere, and rain, resulting in a rapid decrease in the signal strength at the receiving end. Therefore, in practical mmWave networks, highly dense deployment is recommended to compensate for significant path loss. [0003] In recent years, joint optimizati...
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IPC IPC(8): H04W28/08H04W52/14
CPCH04W28/08H04W52/143Y02D30/70
Inventor唐震洲蔡雪冰胡倩金可仲陈爱玲陈龙李胜昌
OwnerWENZHOU UNIV