A Method for Robust Power Allocation in Femtocell Heterogeneous Networks for Uplink Transmission
A heterogeneous network and femtocell technology, applied in the field of mobile communication networks, can solve the problems of small interruption probability, single user, and no consideration of cross-layer interference of macrocell users, achieving good feasibility and practicability, and fast execution speed. , Guarantee the effect of QoS
Active Publication Date: 2019-12-13
深圳市领创星通科技有限公司
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The model is based on probability constraints. Since only the situation of a single user in the femtocell and macrocellular network is considered, and the cross-layer interference from the macrocell user is not considered in the QoS constraint of the femtocell user, the outage probability will become smaller. , the robustness of the system cannot be guaranteed
[0006] According to relevant research, the existing femtocell heterogeneous network power allocation algorithm is mainly based on outage probability, and there are problems such as considering single user and incomplete channel uncertainty.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0029] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0030] This embodiment is a method for robust power allocation in an uplink transmission femtocell heterogeneous network, such as figure 1 shown, including:
[0031] Step 1: Establish a communication network. There are 4 macrocell users (L=4) in the network, 1 femtocell network (N=1), 3 femtocell users (M=3) in the network, background noise Gaussian white noise value with zero mean I th =10 -3 W, Link gain for femtocell users is to satisfy the uniform distribution on [0,1], h ij Obey the uniform distribution on [0,0.05], Obey the uniform distribution on (0,0.03), δ i Pick 5% of ω i =0.001, g il Obey the uniform distribution on (0,0.03). Set the number of iterations t, take t=1 during the initial iteration, the maximum number of iterations is T=20, and initialize the system parameters;
[0032] Step 2: Obtain channel info...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a method for robust power allocation in an uplink transmission femtocell heterogeneous network, and belongs to the technical field of mobile communication networks. The steps of the method are: initializing system parameters; obtaining channel information, and calculating the optimal femtocell user power, and updating the Lagrangian multiplier; judging whether the femtocell user power meets the QoS guarantee of the femtocell user; calculating all femtocell user power The interference power of the cellular user to the macro-cellular user, and judge whether it is not greater than the interference power threshold; judge whether the current iteration number is greater than the maximum iteration number, if so, then end, and obtain the optimal transmission power of the femtocell user, otherwise enter the next time iterate. The invention has the advantages of fast convergence speed, strong practicability and feasibility, and can also ensure the QoS of the femtocell and macrocell users while searching for the optimal transmission power of the femtocell users, and improve the stability of the system.
Description
technical field [0001] The invention belongs to the technical field of mobile communication networks, and relates to a method for robust power allocation in an uplink transmission femtocell heterogeneous network. Background technique [0002] Power allocation is a technical means to effectively solve spectrum sharing and interference management, especially for future large-scale femtocell and macrocell two-layer heterogeneous networks. In recent years, the research on the power allocation problem in two-layer heterogeneous networks of femtocell and macrocell is attracting more and more attention. Existing literature search found that the relevant literature is as follows: [0003] H.Wang et al published an article entitled "Femtocell Power Control for Interference Management Based on Macrolayer Feedback" in "2016IEEE Transactions on Vehicular Technology, July 2016, vol.65, no.7, pp.5222-5236". This article looks for the optimal transmission power of femtocell users under t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/18H04W16/22H04W72/04H04W72/10
CPCH04W16/18H04W16/22H04W72/0473H04W72/56Y02D30/70
Inventor 徐勇军刘玉超李国权
Owner 深圳市领创星通科技有限公司