A dynamic aggregation decision method for LTE WLAN networks under the maximum transmission time limit

Abstract

The invention discloses an LTE WLAN dynamic aggregation decision-making method under the maximum transmission time limit. According to the method, a heterogeneous wireless network scene is taken into consideration and a user selects the optimum network access scheme for the user at a plurality of decision-making time points within a time limit in modes such as LTE and WLAN aggregation in a moving process, so transmission tasks are finished within the maximum time limit demand and the data use cost of the user is the minimum. According to the method, an evolved base station centralized scheduling decision-making control mode is employed; under the condition that the maximum transmission time demand is provided, the costs of employing different network access modes at various time nodes by the user are calculated according to network states at various decision-making time points, the user waiting transmission queue length and the residual allowed transmission time, and a scheme set with the minimum cost is taken as the optimum access scheme strategy. The aggregation method is compatible with a WLAN distribution bearing scheme and the spectral efficiency of unlicensed band assisted cellular communication is utilized to the greatest extent.

Description

Technical field[0001]The invention belongs to the field of communication technology, and specifically relates to a dynamic aggregation decision method for an LTE WLAN network under a maximum transmission time limit.Background technique[0002]With the massive application of high-speed data services represented by video streaming in cellular networks, the load on wireless networks has increased dramatically. According to the predictions of relevant agencies, the global data traffic will increase by more than 11 times from 2015 to 2018. Using a single network to transmit services can no longer meet the needs of users. At present, the trend of dense and heterogeneous communication network scenes is very obvious. With the emergence and popularization of multi-mode terminals, multiple network interfaces can be used for data communication at the same time, which poses new challenges to network access decision-making methods. .[0003]The lack of existing spectrum resources for mobile communic...

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Problems solved by technology

[0004] However, the current research on LTE WLAN aggregation technology is in the early stages of development, and most of the existing research focuses on technical verification, lacking in-depth analysis of access mechanisms and strategies

In addition, the use of multiple wireless links to transmit data in parallel means that user usage costs are doubled

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