Quick algorithm for joint resource allocation in heterogeneous wireless network parallel multi-access system

A heterogeneous wireless network and resource allocation technology, which is applied to the realization of bandwidth and power resource allocation algorithms in parallel multi-access systems of heterogeneous wireless networks, to achieve the effects of low complexity, large network benefits, and reduced complexity

Inactive Publication Date: 2011-09-21
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Computational Optimal Solution Sufficiently Approximating Theoretical Optimal Solution by Fast

Method used

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  • Quick algorithm for joint resource allocation in heterogeneous wireless network parallel multi-access system
  • Quick algorithm for joint resource allocation in heterogeneous wireless network parallel multi-access system
  • Quick algorithm for joint resource allocation in heterogeneous wireless network parallel multi-access system

Examples

Experimental program
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Effect test

Embodiment 1

[0042] The present invention is a fast algorithm for joint resource allocation in a heterogeneous wireless network parallel multi-access system, see figure 1 and figure 2 In a nutshell, the present invention reduces the complexity of the algorithm by dividing the bandwidth and power allocation separately and sequentially when the terminal accesses multiple heterogeneous wireless networks at the same time. First set the user in the case of equal power allocation among multiple access networks, the access network allocates bandwidth to the accessed users, and uses Newton's method to solve the optimal solution of bandwidth allocation during bandwidth allocation; then uses the optimal solution of bandwidth allocation As a result, power water injection is allocated. When the power allocation result is a negative value, bandwidth allocation is returned to achieve joint, fast and efficient allocation of resources. The specific implementation includes the following steps:

[0043] ...

Embodiment 2

[0066] The fast joint resource allocation algorithm in the heterogeneous wireless network parallel multiple access system is the same as that in Embodiment 1, wherein step 4) includes network selection, and when the power allocation result is a negative value, network j is not selected for terminal i and notified The bandwidth resource released by the access network enables the access network to re-allocate the bandwidth to other users.

Embodiment 3

[0068] In order to illustrate the use of the present invention more clearly, the system structure and resource allocation framework are described in detail as follows:

[0069] system model

[0070] Build a multi-radio access system model, taking a single-user, multi-access network system as an example, see figure 1, each multi-mode terminal (MMT) can access multiple wireless networks in parallel, assuming that the channel fading function of terminal i on the bandwidth obtained by access network j is H ij , the background noise power spectral density is D ij , then the channel gain between terminal i and access network j is

[0071] g ij = | H ij | 2 D ij - - - ( 1 )

[0072] Assume that in each...

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Abstract

The invention discloses a quick algorithm for joint resource allocation in a heterogeneous wireless network parallel multi-access system. When the joint resource allocation is performed in the heterogeneous wireless network parallel multi-access system, the bandwidth and power allocations are separated and the resource allocation is performed in turn, wherein the bandwidth allocation under the condition of equal power allocation is firstly performed; in the bandwidth allocation process, the advantage of high convergence rate of a Newton method is fully taken, thereby reducing the arithmetic complexity and increasing the arithmetic rate; and then the power allocation is performed; and if a power allocation result is a negative value, the bandwidth and the power are allocated again, thereby more fully utilizing the bandwidth and power resources as well as increasing the arithmetic efficiency and rate. By utilizing the algorithm to perform the joint resource allocation in the heterogeneous wireless network parallel multi-access system, the purpose of approaching the acquired resource allocation optimal solution to the theoretical optimum solution is achieved. The algorithm can be used for quickly allocating the joint resource in the heterogeneous wireless network parallel multi-access system.

Description

technical field [0001] The invention belongs to the technical field of wireless communication networks, and mainly relates to a method for realizing network joint resource management in a parallel multi-access system of a heterogeneous wireless network, in particular to a method for realizing a bandwidth and power resource allocation algorithm in a parallel multi-access system of a heterogeneous wireless network . Background technique [0002] The remarkable feature of the next generation wireless communication network is the coexistence of multiple radio access technologies (M-RATs); one terminal (user) can access multiple wireless networks at the same time, that is, the Multi-Radio Access System (Multi-RATs). radio access system, MRAs). The multiple wireless networks are heterogeneous networks including wireless local area network (wireless local area network, WLAN), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), wireless me...

Claims

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Application Information

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IPC IPC(8): H04W72/04
CPCY02D30/70
Inventor 刘勤郑杰李建东林勤明黄鹏宇刘伟李钊赵林靖张文柱
Owner XIDIAN UNIV
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