Continuation Guide Table for Seamless Cross-Cell Handover
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Solution Overview
Problem
Current wireless network technologies fail to support continuous data transmission during user station cross-cell handover, leading to interrupted Internet access when a user moves from one cell to another, especially between different types of wireless network cells.
Innovation Solution
A method involving the construction of a continuation guide table in access points (APs) of wireless network cells, which includes an outbound guide table and an inbound reference table, to facilitate seamless data forwarding by identifying the next-hop station addresses for both forward and reverse data transmissions during handover, using IP-in-IP encapsulation for packet forwarding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional wireless network standards (WiFi, EUHT) are used for data transmission, then basic wireless communication function is achieved, but data transmission is interrupted during cross-cell handover
Solution Approach 1:
The patent applies preliminary action by establishing a continuation guide table in the original cell's AP before the user station actually handovers. This table pre-configures the mapping between the user station's original MAC address and the new cell's AP address, enabling seamless data forwarding without interruption when handover occurs.
Solution Approach 2:
The patent uses the continuation guide table as an intermediary mechanism between the original cell AP and the new cell AP. This table acts as a mediator that translates data packets from the original cell's addressing scheme to the new cell's addressing scheme, ensuring continuous data transmission during cross-cell handover.
2Adaptability or versatility
If data connection is reconnected after cross-cell handover, then new cell connectivity is established, but user experience is seriously affected
Solution Approach 1:
The continuation guide table is constructed in advance in the original cell's AP, containing the mapping information needed for seamless handover. This preliminary configuration eliminates the need for time-consuming connection reestablishment procedures when the user station moves to a new cell, as the necessary routing information is already prepared.
3Adaptability or versatility
If cross-cell handover is supported between different wireless network types, then network versatility is improved, but data forwarding complexity increases
Solution Approach 1:
The continuation guide table serves multiple functions: it stores the user station's original MAC address, maps it to the new cell's AP address, and enables data forwarding across different network types. This universal data structure simplifies the complexity of handling cross-network handovers by consolidating multiple requirements into a single table mechanism.
Data Source
AI summary
Disclosed in the present invention is a method for realizing continued transmission of user data during cross-cell handover of a user station. The method comprises: constructing a continuation guide table in an AP of a wireless network cell; when cross-cell handover of a user station occurs, configuring the continuation guide table in the AP; and when handover occurs, forwarding data being transmitted by the user station according to the continuation guide table. Further disclosed in the present invention is an AP of a wireless network cell. The AP is realized by constructing a continuation guide table in an existing AP. According to the present invention, uninterrupted transmission of data streams being transmitted when a user crosses a wireless network cell can be realized, thereby improving the user experience when the user surfs the internet using a wireless network.