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Methods and apparatus for determining communication link quality

A technology of communication link and quality, applied in the direction of data exchange through path configuration, digital transmission system, data exchange network, etc., can solve problems such as non-existence

Inactive Publication Date: 2009-09-02
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no known mechanism that provides monitoring of the quality of the uplink and downlink between the AP and the terminating device

Method used

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  • Methods and apparatus for determining communication link quality
  • Methods and apparatus for determining communication link quality
  • Methods and apparatus for determining communication link quality

Examples

Experimental program
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Embodiment Construction

[0020] figure 1 is a diagram of an exemplary communication system 100 employing path quality determination. As will be described in detail herein, system 100 can be used to place a VoIP call between two endpoints (eg, two communication terminals or stations). System 100 may include a local area network 102, such as a wireless local area network (WLAN) 102, which may operate according to any one of a number of wireless networking standards, such as Wi-Fi (IEEE Std 802.11). Local area network 102 includes access points (APs) 104 that communicate with communication terminal endpoints such as mobile devices 106 or other electronic devices such as computers 108 . AP 104 also communicates with backhaul link 110 .

[0021] Backhaul link 110 may comprise any of several types of network connections, such as Digital Subscriber Line (DSL) or a cable broadband connection. Backhaul link 110 is used to communicatively couple local area network 102 with a wide area network, such as Intern...

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PUM

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Abstract

Methods and apparatus for determining the quality of a communication link transmitting a specified packet type are disclosed. The methodology includes configuring first packets, which share transmission characteristics with a specific packet type, such as a Voice over IP packet, such that the first packets experience similar communication link treatment as the specific packet type. The first packets are then transmitted over the communication link to a quality monitoring server located near a termination equipment of the particular communication link. Second packets, which are transmitted by the server in response to the first packets, are received and evaluated to determine the quality of the communication link based on characteristics of the second packets. Corresponding apparatus are also disclosed.

Description

[0001] Priority claim based on 35 U.S.C. §119 [0002] This application requests Provisional Application No. 60 / filed on September 28, 2006, titled "Handoff Triggers for WLAN and VoWLAN", "Estimation of the Path Quality to assist handoffDecision" and "Handoff Algorithms for VoIP over WLAN", respectively 848,414, 60 / 848,415, and 60 / 945,054, the provisional application assigned to the assignee of the present application, is hereby expressly incorporated by reference. [0003] Citations to Co-Pending Patent Applications [0004] This patent application is related to the following co-pending U.S. patent applications: [0005] "METHODS AND APPARATUS FOR DETERMINING QUALITY OFSERVICE IN A COMMUNICATION SYSTEM," Meylan et al., Attorney No. 070007, filed concurrently with this application, assigned to the assignee of this application and expressly and by reference into this application. technical field [0006] The present disclosure relates generally to methods and apparatus for ...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L12/56H04L12/28
CPCH04L43/50H04L12/2697H04L12/28
Inventor M·M·德什潘德A·梅朗R·贾亚拉姆S·南达A·阿加尔瓦
Owner QUALCOMM INC
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