Traffic load sharing method for delay-tolerant heterogeneous wireless mobile network

Abstract

The invention discloses a traffic load sharing method for a delay-tolerant heterogeneous wireless mobile network, comprising the following steps: step 1, constructing an access point AP deployment diagram of a random geometry model in a specific area; step 2, determining the state transition probability of discrete time for a user in the specific area according to the AP deployment diagram constructed in step 1; step 3, determining a probability distribution function of the distance between the user and an AP communicating with the user; step 4, determining the coverage rate of the AP; and step 5, determining a data traffic function of shared load expected by the user in a certain period of time according to the results obtained in step 2, step 3 and step 4. By adopting the method of the invention, the prediction accuracy of load-shared traffic can be improved, and the traffic load sharing efficiency of WIFI can be improved.

Description

technical field [0001] The invention relates to a time-delay-based load-sharing method for flow-loading in the technical field of mobile communications, in particular to a time-delay-tolerant flow load-sharing method for heterogeneous wireless mobile networks. Background technique [0002] With the development of wireless communication technology, smart terminals have increased the growth of mobile data traffic. On the other hand, mobile Internet applications and video services have further aggravated the growth of mobile data traffic. The rapid growth of mobile data traffic has put enormous pressure on the core network, resulting in network congestion, connection interruption and other issues, affecting user experience. In order to solve this problem, 3GPP proposed LocalIPAccess (LIPA) and selectionIPtrafficoffload (SIPTO) technical solutions to realize the load sharing of macro network data traffic. LIPA is based on local mobile data load offloading, which can support dir...

AI Technical Summary

Problems solved by technology

If the interference problem is solved by inter-frequency networking between small cells and macro networks, it will cause a great waste of spectrum resources, which is undoubtedly not feasible for precious spectrum resources. Therefore, the current small cells and macro networks It is a same-frequency network, so complex interference management algorithms need to be used between small cells to reduce interference

[0007] Low load sharing efficiency

[0008] The LIPA / SIPTO-based traffic offloading solution is to offload user data in real time without additional delay, and is suitable for network scenarios with fixed users or low mobility, but not suitable for mobile scenarios and heterogeneous network scenarios

Under the load sharing scheme of LIPA / SIPTO, if the user is not within the coverage of the small cell, the user will immediately choose to provide data traffic services from the macro network, and there will be no additional delay to the service; if the user is moving at a high speed, the user Usually do not stay under a certain home base station for too long, most of the data still flows through the macro network, and the load sharing efficiency is low

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