Optimal allocation method of radio resources in multicast system based on active antenna array model

A technology of active antennas and optimized distribution, applied in wireless communication, electrical components, etc., to achieve the effect of improving throughput and spectral efficiency

Active Publication Date: 2019-04-09
XIDIAN UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a multicast system wireless resource optimization allocation method based on the active antenna array model, aiming to solve the problem of accurate alignment of the active array antenna of the base station to the user group and the problem of beam carrier allocation at the user group level

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  • Optimal allocation method of radio resources in multicast system based on active antenna array model
  • Optimal allocation method of radio resources in multicast system based on active antenna array model
  • Optimal allocation method of radio resources in multicast system based on active antenna array model

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[0130] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0131] In the present invention, the active antenna array adopts user group-level beamforming technology for user signal transmission, considers the user's location information and video request preference information to cluster users, and according to the location of the user group, the direction of the beam by the base station, Coverage is adjusted to radiate a beam for each user group, enabling precise beam-to-user group alignment. After the active antenna array realizes the alignment of the beams of the user groups, the user groups are clustered according to the location of the user groups, and the user groups in the sa...

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Abstract

The invention discloses a multicast system wireless resource optimization allocation method based on an active antenna array model, which includes clustering the users based on the user's location information and the video request information counted in the current time period; According to the position information of each user group, the horizontal azimuth and vertical elevation angle of the center position of each user group are calculated; the antenna beam of the base station realizes the precise alignment of the user group; the antenna model of the active antenna array is used to determine the distance between the base station and the user group User channel gain model; based on the goal of maximizing throughput, a carrier resource allocation model for multicast systems is proposed; a user group clustering algorithm is proposed, and the user group is clustered according to the location information of the user group; based on maximizing throughput Quantitative carrier allocation algorithm. The invention improves spectrum efficiency, resource utilization rate, spectrum efficiency, system capacity and user performance.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a multicast system wireless resource optimization allocation method based on an active antenna array model. Background technique [0002] In future mobile communications, with the continuous increase in the number of mobile users and terminal data traffic, it is necessary to introduce new technologies into the existing LTE network to utilize wireless resources more effectively. In the subsequent evolution of LTE-A technology, the active antenna beamforming technology was proposed in the 3GPP standard. As an effective technology that can improve spectrum efficiency, active array antennas have begun to be applied to base stations. The traditional LTE system uses a passive antenna. Since the electronic downtilt angle of the antenna is fixed, the use of no resources is limited to the horizontal domain. The active array antenna can adjust the directionality ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04
CPCH04W72/0453H04W72/53H04W72/51
Inventor 杨清海褚明丽
Owner XIDIAN UNIV
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