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Low-complexity uplink cellular network multi-cell coordinated scheduling method and uplink cellular system

A cellular network, low-complexity technology, applied in orthogonal multiplexing systems, multiplexing communications, electrical components, etc., can solve problems such as reducing computational complexity and high computational complexity of system utility values

Active Publication Date: 2019-09-06
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the literature (P.Frank, A.Müller, H.Droste and J.Speidel, "Cooperative interference-aware joint scheduling for the 3GPP LTE uplink," 21stAnnual IEEE International Symposium on Personal, Indoor and Mobile RadioCommunications,Instanbul, 2010, pp .2216-2221), the calculation complexity of the system utility value in the algorithm is relatively high. By exploring the relationship between the main channel of the scheduled user and the interference channel, and the relationship between the interference channel and the interference channel, a simplified system utility value is designed to reduce the operational complexity

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  • Low-complexity uplink cellular network multi-cell coordinated scheduling method and uplink cellular system
  • Low-complexity uplink cellular network multi-cell coordinated scheduling method and uplink cellular system
  • Low-complexity uplink cellular network multi-cell coordinated scheduling method and uplink cellular system

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Embodiment Construction

[0022] The present invention will be described in detail below through specific examples and accompanying drawings.

[0023] like figure 1 As shown, consider an uplink cellular system. There are M cells in the system, and they share the available frequency spectrum, that is, the frequency reuse factor is 1. Each cell has one base station and K user terminals (User Equipment, UE), wherein the base station has N antennas, and the UE has one antenna. Only one user is scheduled on the same time-frequency resource in each cell. The base station can fully know the instantaneous channel information of each user at every moment, and has a central scheduling unit.

[0024] make Indicates the set of users in the i-th cell, k i Indicates the user scheduled by the i-th cell, and is the k-th user of the i-th cell. The signal received by base station i can be expressed as in, Denotes the user k of the jth cell received by base station i after considering large-scale fading j si...

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Abstract

The invention discloses a low-complexity uplink cellular network multi-cell coordinated scheduling method and an uplink cellular system. The method comprises the following steps of: 1) selecting a base station 1 from base stations corresponding to M cells as a first base station, and selecting system utility value calculation function of user with maximum current system utility value in base station 1 2) enabling a subsequent base station i to select user enabling utility value of current system to be maximum on basis of scheduled cell user set; and 3) determining a scheduling user set of thecurrent time slot according to the users selected from each cell. According to the invention, the complexity of the scheduling method is reduced, and the system performance is improved.

Description

technical field [0001] The invention relates to a multi-cell coordinated scheduling method in an uplink cellular network with reduced complexity and an uplink cellular system, belonging to the technical field of wireless communication. Background technique [0002] To meet higher data rate requirements, cellular networks use full spectrum multiplexing. However, the main disadvantage of full-spectrum multiplexing is that it will cause inter-cell interference, and especially limit the performance of cell-edge users. Therefore, it is very important to eliminate interference while maintaining high data rates. [0003] Multi-cell coordinated scheduling (Coordinated Scheduling, CS) is an effective solution to reduce inter-cell interference (refer to G.Y.Li, J.Niu, D.Lee, J.Fan and Y.Fu, "Multi-Cell Coordinated Scheduling and MIMO in LTE, "in IEEE Communications Surveys & Tutorials, vol.16, no.2, pp.761-775, 2014.). In multi-cell CS, each user only communicates with its associat...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04J11/00
CPCH04W24/02H04J11/005H04J11/0056
Inventor 屈婉月赵玉萍禹宏康
Owner PEKING UNIV