An emergency preemptive uplink vertical handover method based on time threshold between heterogeneous networks

A vertical switching and inter-network technology, applied in the direction of wireless communication, electrical components, etc., to achieve the effect of improving performance

Inactive Publication Date: 2019-07-05
EAST CHINA NORMAL UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

M. Salamah et al pointed out in the paper "A FairBandwidth Allocation Scheme for Multimedia Handoff Calls in CellularNetworks" published in the journal "New Trends in Computer Networks" in 2005: "For online voice calls, if the duration of the call is very short, the call will be dropped. , the user will be very angry, and when the call is dropped after a certain period of time, the user's dissatisfaction will not be so strong; similarly, for online data calls, when the connection time is less than an acceptable range, the user generally can Tolerant, but when the online data transmission has been going on for a considerable period of time and the connection drops, the user's dissatisfaction will be quite strong”

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  • An emergency preemptive uplink vertical handover method based on time threshold between heterogeneous networks
  • An emergency preemptive uplink vertical handover method based on time threshold between heterogeneous networks
  • An emergency preemptive uplink vertical handover method based on time threshold between heterogeneous networks

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Embodiment Construction

[0026] The present invention will be further elaborated below in conjunction with the accompanying drawings and embodiments. The following examples do not limit the invention. Without departing from the spirit and scope of the inventive concept, changes and advantages that can be imagined by those skilled in the art are all included in the present invention.

[0027] figure 1 It shows the cellular mobile network / WLAN interworking system structure, which provides voice and broadband data services for cellular mobile terminals and wireless terminals in the WLAN coverage area. In the simulation of the embodiment, the channel capacity B of each cell is 20 BBUs (basic bandwidth unit), and the channel capacity of each WLAN coverage area is 54 BBUs. Channel threshold B set by cellular mobile channel u and B n 20BBUs and 18BBUs, respectively. In order to meet the service QoS requirements, a single voice call needs to occupy a channel of one basic bandwidth unit, while a single br...

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Abstract

The invention discloses an emergency preemptive upward handoff method based on a time threshold between heterogeneous networks. The method, based on the upward vertical handoff method based on the time threshold, provides a priority emergency preemptive algorithm for a cellular mobile channel in single cellular coverage to enhance a capability of the upward vertical handoff calling and the newly-added cellular calling for competing for the cellular mobile channel. The method has the advantages of greatly improving the system UVH calling loss rate and newly-added cellular calling blocking rate at the expense of the quality of service of the non-sensitive voice user part at a limited degree while maintaining a high cellular mobile channel utilization rate of the system, and realizing effective use of the channel resources.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to an emergency preemptive uplink vertical handover method based on a time threshold between heterogeneous networks. Background technique [0002] At present, with the continuous growth of people's demand for mobile access services, the next-generation wireless communication technology is developing towards the direction of realizing heterogeneous wireless network intercommunication. Cellular mobile network and wireless local area network (WLAN) are two major wireless communication networks in modern wireless communication. The cellular mobile network is characterized by large coverage and low bandwidth. On the contrary, WLAN has the characteristics of small coverage and high bandwidth. The intercommunication between the cellular mobile network and WLAN can make the advantages of the two complement each other and enhance the service quality (QoS) of the provided serv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/14H04W36/16
CPCH04W36/14H04W36/165
Inventor 蔡家麟
Owner EAST CHINA NORMAL UNIV
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