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Resources allocation method based on cross-layer scheduling mechanism under imperfect CSI condition

A perfect, cross-layer technology, applied in electrical components, wireless communication, etc., can solve problems such as less research on cross-layer design mechanism, less research on cross-layer design, and inability to apply Macro-Femto heterogeneous networks.

Inactive Publication Date: 2013-08-14
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] (3) Mainly for SISO (Single Input Single Output, single input, single output) system, there are few studies on the cross-layer design of MIMO (Multiple Input Multiple Output, multiple input multiple output) system
[0008] (4) Mainly for relay network, cognitive radio network, self-organizing network, vehicle communication network and wireless mesh network, but less research on cross-layer design mechanism for Macro-Femto heterogeneous fusion network
[0009] In addition, the existing technology still has the following shortcomings: ①The network topology is a traditional macro cellular network, which cannot be applied to Macro-Femto heterogeneous networks

Method used

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  • Resources allocation method based on cross-layer scheduling mechanism under imperfect CSI condition
  • Resources allocation method based on cross-layer scheduling mechanism under imperfect CSI condition
  • Resources allocation method based on cross-layer scheduling mechanism under imperfect CSI condition

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Embodiment Construction

[0133] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0134] Assume that there are M macro cells and F femto cells in the heterogeneous network system. All active users share the same licensed spectrum. The number of transmit antennas of each macro cell base station is The number of transmit antennas of each femtocell base station is The mth (m∈M, M is a set composed of all macro cells, M={1,2,...,M}) there are K in the macro cell m users. The fth (f∈F, F is a set of all femtocells, F={1,2,...,F}) has K f users. The number of receiving antennas for each macro cell user and each femto cell user is N R . Assume that the femto cell adopts closed subscriber group mode, that is, the macro cell users always access the macro cell base station, even if the received sign...

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Abstract

The invention discloses a resources allocation method based on a cross-layer scheduling mechanism under an imperfect CSI (customer satisfaction index) condition and belongs to the technical field of wireless communication design. The method comprises the following steps: building a total throughput mathematical model of a heterogenous network system; setting user data transmission interruption probability; calculating macrocell user data transmission rate and femto cell user data transmission rate which meet the set interruption probability, and setting delay constraint of the micro-cell user data transmission rate and the delay constraint of the femto cell user data transmission rate; substituting the data transmission rates and the delay constraints into the total throughput mathematical model of the heterogenous network system, so as to obtain an objective function for calculating the greatest value of the total throughput; and calculating available signal power of a base station, which is transmitted at each resource block, and the optimum solution of a resource block used by a user. According to the invention, imperfect channel state information is described by using interruption probability, and a cross-layer design mechanism is guaranteed to be suitable for an actual wireless communication network.

Description

technical field [0001] The invention belongs to the technical field of wireless communication design, and in particular relates to a resource allocation method based on a cross-layer scheduling mechanism under the condition of imperfect CSI. Background technique [0002] Mobile users' demand for transmission bandwidth and data rate is increasing exponentially. The traditional cellular network architecture of IMT-Advanced (International Mobile Telecommunications-Advanced) can no longer meet the seamless coverage of hotspot areas such as indoors and small and medium-sized enterprises. , IMT-Advanced heterogeneous network architecture came into being. The IMT-Advanced heterogeneous network supports a variety of services with different QoS requirements. These QoS requirements include maximum tolerable delay, target data rate, and packet error rate. [0003] Cross-layer scheduling technology can adaptively schedule users and allocate power and data rate, so it can increase syste...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/12
Inventor 张秀宁谈振辉徐少毅陶成
Owner BEIJING JIAOTONG UNIV
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