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Methods and apparatus for RF channel switching in a multi-frequency network

A multi-frequency network and channel switching technology, applied in the field of data network operation, can solve problems such as negative impact, interruption of device operation, and inability to guarantee information

Inactive Publication Date: 2013-01-09
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, monitoring all RF channels may have a negative impact on device operation by causing interruption of the stream currently being decoded or by causing missed stream acquisition
Furthermore, even if a receiver attempts to monitor all RF channels, there is no guarantee that the information it acquires from one RF channel will not become invalid while the receiver is monitoring other RF channels

Method used

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  • Methods and apparatus for RF channel switching in a multi-frequency network
  • Methods and apparatus for RF channel switching in a multi-frequency network
  • Methods and apparatus for RF channel switching in a multi-frequency network

Examples

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Embodiment approach

[0087] Figure 4 A network 400 including aspects of a switching system is shown. For example, network 400 may be figure 1 The portion of network 100 shown in . Network 400 includes network operations center (NOC) 402 , transmitter sites 404 and 408 , LOI 406 , and device 432 .

[0088] NOC 402 operates to receive wide and local content multiplexes for distribution in selected wide and local areas of the multi-frequency network. For example, NOC 402 operates to configure a multi-frequency network to distribute content. To accomplish this, the NOC 402 is aware of the geographic regions of the network, the RF channels used in each region, and any other network information that may be needed to distribute wide-area and local-area content multiplexes.

[0089] In an aspect, NOC 402 includes aggregation logic 410 . Aggregation logic 410 operates to determine wide area and local area multiplex groups as described above. For example, wide and local VM sets are generated that id...

example

[0116] Figure 9 A diagram 900 is shown illustrating an example of overhead message generation and distribution for use in aspects of a switching system. For example, diagram 900 illustrates how aspects of a switching system operate to allocate wide-area VM groups and local-area VM groups via LOI 908 in a multi-band network. In one aspect, Figure 9 The overhead messages described in the Figure 6 The messaging logic 602 shown in is generated.

[0117] For the purposes of this example, it will be assumed that a multi-frequency network utilizes two RF carrier frequencies (RF1, RF2) to broadcast wide-area and local-area VM groups to devices in the LOI 908 . The wide-area VM group includes first and second wide-area multiplexes (WM1, WM2), where WM1 includes streams 1,2 and WM2 includes streams 3,4. The local VM group includes first and second local multiplexes ( LM1 , LM2 ), where LM1 includes stream 5 and LM2 includes stream 6 . It will also be assumed that the content mul...

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Abstract

The present invention provides methods and apparatus for RF channel switching in a multi-frequency network. In one aspect, a method includes identifying a multiplexing group comprising one or more content streams, wherein the multiplexing group is a vertical multiplexing (VM) group and a unified multiplexing (UM) one of a group; generate an overhead message associating one or more RF carrier frequencies with the one or more content streams; and transmit the overhead message via the multi-frequency network. An apparatus includes: input logic configured to receive overhead messages associating one or more content streams with one or more RF carrier frequencies; and processing logic configured to detect a channel identifying a selected content stream A switch event, determining a selected RF carrier frequency associated with the selected content stream based on the overhead message, and switching to the selected RF carrier frequency to receive the selected content stream.

Description

[0001] Claim of priority under 35 U.S.C. §119 [0002] This patent application claims the title of "Methods and Apparatus for Channel Switching in a FLO Vertical Multi-Frequency Network" filed on March 21, 2007, entitled "Method and Apparatus for Channel Switching in a FLO Vertical Multi-Frequency Network" Priority to Provisional Application No. 60 / 896,252, which is assigned to the present assignee and is hereby expressly incorporated herein by reference. technical field [0003] The present application relates generally to the operation of data networks, and more particularly to methods and apparatus for RF channel switching in multi-frequency networks. Background technique [0004] Data networks, such as wireless communication networks, must make a compromise between services tailored to a single terminal and services provided to a large number of terminals. For example, distributing multimedia content to a large number of resource-constrained portable devices (subscribe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/16H04W76/02H04W48/12H04W72/02
CPCH04W72/02H04W76/021H04W48/12H04W76/025H04W76/11H04W76/15H04W72/04
Inventor 比尼塔·古普塔陈安梅德瓦什·沙阿李林波拉古拉曼·克里希纳穆尔蒂阿肖克·曼特拉瓦蒂
Owner QUALCOMM INC