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A method and system for inter-cell handover

A cross-cell, purpose-based technology, applied in the transmission system, digital transmission system, data exchange network, etc., can solve problems such as poor user experience, data packet loss, and switching service interruption

Active Publication Date: 2021-08-24
NUFRONT MOBILE COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will result in the loss of some data packets during the switching process, and the lost packets must rely on the retransmission mechanism of the upper layer application to recover, which will lead to a certain degree of switching service interruption and poor user experience

Method used

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  • A method and system for inter-cell handover
  • A method and system for inter-cell handover

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Embodiment Construction

[0038] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. These embodiments of the present invention may be referred to herein, individually or collectively, by the term "invention", which is for convenience only and is not intended to automatically limit the application if in fact more than one invention is disclosed The scope is any individual invention or inventive concept.

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Abstract

The present invention provides a method for cross-cell lossless handover, comprising: when a site STA needs to be handed over, the source access point CAP sends a data packet forwarding request to the destination access point CAP; the destination CAP replies with a data message to the source CAP Forwarding the response; the source access point CAP sends a handover response signaling to the station STA; the source access point CAP sends the downlink data message that needs to be sent to the station STA to the destination CAP; the destination CAP sends the downlink message to the Site STA. And provide the corresponding system. By adopting the technical solution provided by the invention, the STA can realize orderly downlink data packets and no packet loss during the handover process. Although the air wireless interface of the STA is interrupted for a certain period of time during the handover process, through the interaction between CAPs and the forwarding of data packets, the final STA upper layer application layer still obtains the effect of lossless and orderly packet transmission.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a method and a system for inter-cell lossless handover. Background technique [0002] Ultra-high-speed wireless LAN needs to carry various types of communication services, such as streaming media services such as online voice and video. These services have high requirements on real-time indicators such as delay and jitter. The ongoing communication services will not be interrupted, and the communication experience of business continuity switching is given to users as quickly as possible. [0003] The traditional local area network adopts the handover mechanism triggered by the user, and there is no coordination and control between central access points (CAP, Central AccessPoint). In a specific embodiment of the prior art, the handover process is as follows: figure 1 shown. This will result in the loss of some data packets during the handover process, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/18H04W36/30H04W74/08H04L12/721H04L12/861
CPCH04L45/123H04L49/9005H04W36/18H04W36/30H04W74/0833
Inventor 崔心发刘慎发王凯鲍东山
Owner NUFRONT MOBILE COMM TECH