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A User Scheduling Method Using Airspace Location Characteristics

A user scheduling and user technology, applied in wireless communication, electrical components, etc., can solve the problem of high complexity, and achieve the effect of reducing interference, ensuring communication quality, and ensuring fairness

Active Publication Date: 2019-06-14
南京易太可通信技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When using the proportional fairness algorithm to schedule multiple users, multiple users can be selected at the same time through the exhaustive algorithm to achieve optimal performance, but the complexity is too high

Method used

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  • A User Scheduling Method Using Airspace Location Characteristics
  • A User Scheduling Method Using Airspace Location Characteristics
  • A User Scheduling Method Using Airspace Location Characteristics

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Embodiment Construction

[0028] The present invention will be further illustrated below in conjunction with specific examples. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the present invention, modifications to various equivalent forms of the present invention by those skilled in the art fall within the scope defined by the appended claims of the present application.

[0029] like figure 1 As shown in the schematic diagram of the wireless communication system, the base station is configured with 6 transmitting sub-arrays, the number of users to be served is 20, each user has only one antenna, and 6 users are scheduled for communication at the same time. When scheduling users, set the initial candidate user set as U={1,2,...,20}, and schedule the user set U s = Φ, where Φ represents the empty set, and S is used for the set of sectors where the candidate users are located u...

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Abstract

The invention discloses a user scheduling method utilizing the airspace location characteristics. Users are grouped by sector-level scanning. If the number of scheduled users is greater than the number of sectors where the users are located, firstly, they are scheduled from each sector based on the principle of proportional fairness. One user and determine the assigned base station transmission sub-array and its corresponding optimal transmission beam, then use the remaining transmission beams to train and select the remaining users based on the proportional fairness algorithm; if the number of scheduled users is not greater than the number of sectors where the user is located , then, each sector can schedule at most one user, and the proportional fairness algorithm is used for user selection in the sector, and the scheduled user is assigned a base station transmit subarray and its corresponding optimal transmit beam. The scheme provided by the present invention utilizes the characteristics of the airspace and jointly simulates the beam training process, so that each sub-array of the base station allocates different transmit beams to communicate with each user, improves system throughput, reduces interference between users, and improves system performance.

Description

technical field [0001] The invention relates to a user scheduling method utilizing air space position characteristics, and belongs to the technical field of wireless communication. Background technique [0002] For future 5G performance requirements in terms of transmission rate and system capacity, large-scale antennas will be an important direction for the continued evolution of Multiple-Input Multiple-Output (MIMO) technology. Millimeter wave has become a key technology in 5G wireless communication system due to its abundant spectrum resources. In millimeter wave communication, due to the short wavelength, it is easy to realize a large-scale antenna array, which ensures that the device is small in size and easy to package. When the base station is equipped with multiple transmitting sub-arrays, multiple data streams can be transmitted in parallel in a directional manner, improving system throughput. [0003] For a multi-user MIMO system, when a base station transmits mu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W72/12
CPCH04W72/046H04W72/121H04W72/566H04W72/535
Inventor 何世文唐姗姗薛春林黄永明王海明张军洪伟江华
Owner 南京易太可通信技术有限公司
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