A Downdip Angle Optimization and Power Distribution Method for Vertical Sector Splitting
An allocation method and sector technology, applied in power management, electrical components, radio transmission systems, etc., can solve problems such as the reduction of user data rate at the edge of sub-sectors, and achieve the effect of improving overall performance and good performance
Active Publication Date: 2020-04-28
NORTHWEST UNIV
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[0004] The purpose of the present invention is to provide a downtilt angle optimization and power allocation method for vertical sector splitting, which solves the problem of reducing the user data rate at the edge of the sub-sector in the vertical splitting in the prior art
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Embodiment 1
[0037] This embodiment provides a downtilt angle optimization and power distribution method in vertical sector splitting, which specifically includes the following steps:
[0038] Step 1, constructing a downlink system, the downlink system includes C cells, and K users and N frequency resource blocks are distributed in each cell; in this embodiment, each cell is vertically split into two sectors, respectively the inner sector and the outer sector, the base station antenna forms two vertical beams with different downtilt angles, pointing to the inner and outer sectors respectively, and both the inner sector and the outer sector multiplex N resource blocks;
[0039] Each cell is covered by 1 base station, and each base station is set with N troot transmit antenna, the total transmit power of each cell is P; after a cell is vertically split, the total transmit power of the inner sector and the outer sector is P;
[0040] According to the 3GPP protocol standard "TR 36.873Study on...
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The invention discloses a downtilt angle optimization and power distribution method of vertical sector splitting, comprising the following steps: constructing a downlink system, the downlink system includes C cells, and K users are distributed in each cell and N frequency resource blocks; each cell includes an inner sector and an outer sector, and N frequency resource blocks multiplexed in the inner sector and the outer sector; each cell covers a base station, and each base station is provided with N t root transmit antenna, the total transmit power of each cell is P; assume that the total transmit power P is evenly distributed to the inner sector and outer sector of each cell; when user k is scheduled, let the cell where user k is located be the cell c. Calculating the optimal downtilt angles of the inner sector and outer sector in cell c Calculate the optimal power of the inner sector and outer sector in cell c according to the optimal downtilt angles of the inner sector and outer sector in cell c. The invention comprehensively optimizes the downtilt angle and power distribution strategy of the vertical splitting sector, and can greatly improve the overall performance of the system compared with the existing methods.
Description
technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a downtilt angle optimization and power distribution method of vertical sector splitting. Background technique [0002] The latest LTE-A standard sets the downlink and uplink data transmission rates at 1Gbps and 500Mbps respectively, which is even higher than that of the 5G wireless system. In order to achieve such a goal, many schemes have been proposed, such as Massive Multiple-Input Multiple-Output (MIMO), Active Antenna System (AAS) and so on. Unlike massive MIMO systems, AAS does not require hundreds or more antennas at the base station (BS). AAS can form two or more beams, and its downtilt angle can be adjusted remotely, while the traditional antenna needs to go to the place where the antenna is placed for on-site operation. Therefore, AAS can optimize the inclination angle according to the actual situation of the network in the traditional sector, thus provi...
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IPC IPC(8): H04B7/0491H04B7/0426H04W16/28H04W24/02H04W24/06H04W52/26H04W52/34H04W52/42H04W72/08H04W72/54
CPCH04B7/0426H04B7/0491H04W16/28H04W24/02H04W24/06H04W52/267H04W52/34H04W52/346H04W52/42H04W72/542
Inventor 牛进平李艳艳索莲李想马跃刘雨田陈晓江房鼎益
Owner NORTHWEST UNIV