Beam and power distribution method for millimeter wave system
A distribution method, millimeter wave technology, applied in the field of mobile communication, can solve the problems of signal transmission quality degradation, high carrier frequency, poor penetration ability of obstacles, etc.
Active Publication Date: 2019-11-22
BEIJING UNIV OF POSTS & TELECOMM +1
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Problems solved by technology
[0003] 1) Due to the very high carrier frequency in the millimeter wave system, the loss of the transmission signal path is high, the penetration ability of obstacles is poor, and the coverage of the cell is reduced
[0004] 2) When the user terminal (UE) is not connected to a suitable beam, the quality of signal transmission will be degraded, and even the link will be interrupted, affecting system throughput and user experience
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[0071] The technical solutions in the embodiments of the present application are clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.
[0072] This application proposes a method for joint optimization of beam and power allocation in millimeter wave systems to maximize system energy utility. Specifically, in the cell downlink millimeter wave system, it includes a base station (BS) located in the center of the cell and K uniformly distributed users, the users are denoted by k, and the total number of users is K. The base station sends out M beams, and the beams are denoted by m. This application adopts massive multipl...
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The invention provides a beam and power distribution method for a millimeter wave system. The method comprises the following steps: building a problem model which takes the maximization of the energyutility of the system as a target, and achieves the joint optimization of beam and power distribution; under the condition of given power allocation, performing beam allocation on the problem model for the user by adopting a beam allocation method, and allocating a beam vector to the user; under the condition of given beam allocation, a power allocation method is adopted for the problem model to perform power allocation for the user; and performing joint optimization beam allocation and power allocation on the problem model to obtain a maximum system energy utility value. According to the invention, the beam vector is allocated to the appropriate user, the user is stably matched with the beam, the user obtains a better transmission rate and obtains a maximum system energy utility value, the transmission rate, stability and transmission quality of signals in the communication process between the user and the base station are improved, and the system energy loss is reduced.
Description
technical field [0001] The present application relates to the technical field of mobile communication, and in particular to a beam and power allocation method of a millimeter wave system. Background technique [0002] With the explosive growth of smart terminals and wireless mobile communication services, future wireless mobile communication is facing severe challenges, such as: how to increase system capacity, how to meet the service needs of different users, and how to solve the problem of shortage of spectrum resources, etc. At present, the widely used microwave frequency band below 6GHz cannot provide sufficient spectrum resources. The millimeter wave band of 30-300GHz contains abundant and available spectrum resources, which can alleviate the pressure of scarcity of spectrum resources. However, the use of millimeter wave systems for wireless communication has the following technical problems : [0003] 1) Due to the very high carrier frequency in the millimeter wave sy...
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IPC IPC(8): H04W24/02H04W72/04
CPCH04W24/02H04W72/046H04W72/0473H04W72/53Y02D30/70
Inventor 张天魁陈丹丹张颖慧曾志民
Owner BEIJING UNIV OF POSTS & TELECOMM