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Dynamic multi-access business distributing method in isomerism cooperative network

A collaborative network and multi-access technology, applied in network traffic/resource management, network planning, electrical components, etc., can solve problems that affect the performance of business distribution and do not consider the rate of multi-mode terminals for business bursts

Inactive Publication Date: 2013-03-27
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the relevant literatures do not consider the impact of business burst and multi-mode terminal rate limitation in the cooperative network, which affects the performance of business offloading to a certain extent.

Method used

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  • Dynamic multi-access business distributing method in isomerism cooperative network
  • Dynamic multi-access business distributing method in isomerism cooperative network
  • Dynamic multi-access business distributing method in isomerism cooperative network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Please refer to figure 1 , The present invention restricts and smooths the suddenness of the business by adding the token funnel in the wide area network. figure 1 In the heterogeneous network scenario where WWAN and WPAN cooperate, there are N different WWANs and one WPAN composed of multiple MMTs. For the convenience of description, different WWAN is expressed as RAN={RAN1,RAN2,...,RANN}, WPAN is expressed as RANN+1, and different MMT is expressed as MMT={MMT1,MMT2,...,MMTM}. In this heterogeneous network, assuming that there is data to be transmitted from WWAN to MMT1, the input service flow can be divided into multiple service sub-flows, which are respectively transmitted to it through different WWANi,i∈{1,...,N} Associated MMTj,j∈{1,...,M}, and then different MMTs in WPAN coordinated transmission, the divided data stream finally arrives at MMT1, and the sub-stream aggregation recovery is realized at MMT1, thus completing the end-to-end coordinated transmission. Assu...

Embodiment 2

[0064] Please refer to figure 2 , This paper considers the problem of shunt optimization based on token funnel. The speed of token generation is the speed of the bit stream that can be allowed to enter the network is rb / s, and the capacity of the funnel is Wbit. Then the average time for transmitting a packet is μ=r / L. It is the time that the token can accumulate, and the average delay of the packet passing through the token funnel system is [8]:

[0065] T = 1 μ - λ e - c ( μ - λ ) - - - ( 1 )

[0066] The time c that the token can accumulate is related to the transmission rate that the terminal can provide (c≤μ N+1 ).

[0067] Due to the rate control strategy of adding the token funnel in WWAN, the business distribution of packets arriving at MMT is uncertain. Below we take i∈{2,...N} as an example for analysis as figure 2 Shown.

[0068] The output of the token funnel is determined by the input business flow and service c...

Embodiment 3

[0079] Distributed solution method based on duality

[0080] For the solution of the optimization problem (P), the Lagrange function is transformed into:

[0081] L ( λ i , v ) = X i = 1 N 1 μ i - λ i e - c i ( μ i - λ i ) + X i = 2 N 1 μ N + 1 - λ i + v ( X i = 1 N λ i - λ )

[0082] s.t 0 ≤ λ i μ i ‾ , ∀ i - - - ( 7 )

[0083] Where v∈R is the Lagrangian multiplier corresponding to constraint (5). The dual function can be expressed as:

[0084] g ( v ) = min 0 ≤ λ i μ i L ( λ i , v ) - - - ( 8 )

[0085] Corresponding to the dual problem of the original problem:

[0086] max v A R g ( v ) - - - ( 9 )

[0087] It can be proved that the original problem is a convex opt...

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Abstract

A dynamic multi-access business distributing method in an isomerism cooperative network comprises the following steps of 1 building a wireless wide area network (WWAN) composed of N different (RAT); 2 transmitting a data packet, enabling a length obeying mean value to be exponential distribution of An Lbit, transmitting a mean time mu=r / L buffer area of a package to accumulate time and the data package, and mean time delay of the data package passing through a WWAN system is ; 3 as for a link, enabling the MMT1 to b directly connected with the RAT1, and enabling the transmission time delay to be; and 4 building a model based on a distribution method of a tablet hopper.

Description

[0001] The invention belongs to the technical field of wireless communication networks, and mainly restricts and smooths the burstiness of services by adding a token funnel in the wide area network, so that the forwarding service of a multi-mode terminal is within a controllable range, and a split based on the token funnel model is established For constrained optimization problems, a distributed algorithm is proposed through dual decomposition. According to the simulation results, the shunt strategy proposed in this paper can not only greatly reduce the transmission delay, but also has a small overhead, which can be easily implemented in the actual system. Background technique [0002] With the development of wireless communication, different communication technologies and network systems continue to appear, such as a personal area network (WPAN, Wireless Personal Area Network) composed of Bluetooth technology, a local area network (WLAN, Wireless Local Area Network) supported by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/22H04W28/10
Inventor 刘勤郑杰陈紫晨李钊赵林靖黄鹏宇李建东
Owner XIDIAN UNIV
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