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Emergency preemptive upward handoff 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: 2017-03-15
EAST CHINA NORMAL UNIV
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  • Abstract
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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”

Method used

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  • Emergency preemptive upward handoff method based on time threshold between heterogeneous networks
  • Emergency preemptive upward handoff method based on time threshold between heterogeneous networks
  • Emergency preemptive upward handoff method based on time threshold between heterogeneous networks

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Embodiment Construction

[0026] The present invention will be described in further detail below with reference to the drawings and embodiments. The following examples do not limit the present 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 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 These are 20BBUs and 18BBUs. In order to meet service QoS requirements, a single voice call needs to occupy one basic bandwidth unit channel, and a single broadband data call need...

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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 a time threshold-based emergency preemption uplink vertical handover method between heterogeneous networks. Background technique [0002] At present, as people's demand for mobile access services continues to grow, the next generation of wireless communication technology is developing in the direction of realizing interoperability of heterogeneous wireless networks. Cellular mobile network and wireless local area network (WLAN) are the two main wireless communication networks in modern wireless communication. Cellular mobile networks are characterized by large coverage and low bandwidth. On the contrary, WLAN has the characteristics of small coverage and high bandwidth. The intercommunication between cellular mobile network and WLAN can complement the advantages of the two and enhance the quality of service (QoS) of the services provided. [0003] The process of exchang...

Claims

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Application Information

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IPC IPC(8): H04W36/14H04W36/16
CPCH04W36/14H04W36/165
Inventor 蔡家麟
Owner EAST CHINA NORMAL UNIV
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