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Dynamic upstream and downstream flow unloading method and system based on heterogeneous network convergence

A heterogeneous network, traffic offloading technology, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve problems such as complex processes and inability to optimize, improve service experience, and avoid network overload problems.

Active Publication Date: 2014-08-13
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing solution, different RATs of the same UE need to be assigned different IP addresses (HoA, CoA), and IP addresses are used to distinguish IP flows. In fact, two base stations are managed, and the process is relatively complicated, and it is impossible to provide information for this UE. Global optimization across systems

Method used

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  • Dynamic upstream and downstream flow unloading method and system based on heterogeneous network convergence
  • Dynamic upstream and downstream flow unloading method and system based on heterogeneous network convergence
  • Dynamic upstream and downstream flow unloading method and system based on heterogeneous network convergence

Examples

Experimental program
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Effect test

Embodiment 1

[0099] In the scenario where LTE and WLAN RATs coexist, it is assumed that the LTE and WLAN loads respectively reach 50% of their maximum loads at this time, and the network does not face the risk of overloading. When a user initiates a service request, (only discussing user terminal packet-level traffic offloading under dual connections), the specific process of uplink traffic offloading is as follows:

[0100] Step 1: The access control module of the RMC layer determines the network status of the user terminal without affecting the existing user network status by comprehensively considering the network status such as signal quality, call blocking rate, call drop rate, data packet delay and packet loss rate, etc. Simultaneously connect to both LTE and WLAN RATs for service transmission.

[0101] Step 2: The multi-mode base station side performs periodic or timing measurement on the network status (channel quality, RAT load), and determines that the user terminal occupies 25% ...

Embodiment 2

[0106] In a scenario where two RATs of LTE and WLAN coexist, it is assumed that the WLAN load reaches 90% of its maximum load at this time. When user 1 initiates a service request, the specific process of uplink traffic offloading is as follows:

[0107] Step 1: The access control module of the RMC layer determines the network status of the user terminal without affecting the existing user network status by comprehensively considering the network status such as signal quality, call blocking rate, call drop rate, data packet delay and packet loss rate, etc. Simultaneously connect to both LTE and WLAN RATs for service transmission.

[0108] Step 2: The multi-mode base station measures the network status (channel quality, RAT load) periodically, determines that the user terminal occupies 25% of the LTE resources and 75% of the WLAN resources for the service transmission according to the uplink traffic offloading control algorithm, and The user terminal is notified through contro...

Embodiment 3

[0114] In the scenario where LTE and WLAN RATs coexist, assuming that user 1 and user 2 respectively initiate file transfer requests and voice requests in the case of dual links, the specific process of downlink traffic offloading is as follows:

[0115] Step 1: In order to ensure that the data is not lost and processed in an orderly and reasonable manner, the IP data packets from the core network first arrive at the downlink buffer area of ​​the RMC layer, so that the IP data packets wait for processing in a certain order.

[0116] Step 2: Report the state of the downlink buffer queue to the relevant resource scheduling module and traffic offloading module of the control plane, adjust the resource scheduling strategy according to the queuing situation, and ensure that no packet loss is caused when the demultiplexing module at the RMC layer is processed. And optimize resources to the greatest extent.

[0117] Step 3: The multi-mode base station periodically measures the networ...

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Abstract

The invention discloses a dynamic upstream and downstream flow unloading method and system based on heterogeneous network convergence, and relates to the field of heterogeneous network convergence. According to the method, a convergence protocol frame is built, a refined adjusting and controlling mode on a multi-mode base station side is adopted, upstream data multiplexing and downstream data demultiplexing between different heterogeneous network links are carried out, combined dispatching and control over resources between different wireless access network system are achieved, network overloading is avoided, and the service experience of users is improved.

Description

technical field [0001] The invention relates to the field of heterogeneous network fusion, in particular to a method and system for dynamically unloading uplink and downlink traffic based on heterogeneous network fusion. Background technique [0002] With the development of wireless communication technology, the rapidly increasing data volume and diverse user demands bring challenges to LTE, especially for Small Cells and Femto Cells in hotspot areas that are difficult to meet the data demands of users. WLAN (Wireless Local Area Network) has the advantages of low deployment cost and high data rate, but while it brings convenience and practicality to users, it also has defects such as security. [0003] Heterogeneous wireless network convergence can not only solve service balancing, but also solve the problem of capacity coverage in indoor and hotspot areas, and achieve three-dimensional full coverage while realizing multi-network collaborative work (such as joint wireless re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/10
Inventor 崔琪楣陶小峰史玉龙崔志燕元天鹏
Owner BEIJING UNIV OF POSTS & TELECOMM
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