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Wide area and local network id transmission for communication systems

A local area network, wide area network technology, applied in the system field of OFDM symbols, can solve problems such as reducing the effectiveness of the existing technology

Inactive Publication Date: 2008-02-06
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is reasonable to assume that signal interference will continue to increase reducing the effectiveness of existing technologies

Method used

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  • Wide area and local network id transmission for communication systems
  • Wide area and local network id transmission for communication systems
  • Wide area and local network id transmission for communication systems

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Embodiment Construction

[0023] Embodiments of the present invention will now be described with reference to the drawings, wherein like reference numerals are used to refer to like parts throughout the drawings. In the following description, for the convenience of explanation, many specific details are listed in order to provide a thorough understanding of the embodiments of the present invention. It is evident, however, that the embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing the embodiments. As used in this application, the term "component" means an entity, hardware, software, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to: a processor, a process running on a processor, and / or a multiplexer, and / or other signal reduction devices and software.

[0024] According to these embodiments and their co...

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Abstract

The embodiments utilize OFDM symbols to communicate network IDs. The IDs are encoded into symbols utilizing the network IDs as seeds to scramble respective pilots that are then transmitted by utilizing the symbols. The pilots can be structured into a single OFDM symbol and / or multiple OFDM symbols. The single symbol structure for transmitting the network IDs is independent of the number of network ID bits and minimizes frequency offset and Doppler effects. The multiple symbol structure allows a much coarser timing accuracy to be employed at the expense of transmitting additional symbols. Several embodiments employ a search function to find possible network ID candidates from a transmitted symbol and a selection function to find an optimum candidate from a network ID candidate list.

Description

field of invention [0001] In general, embodiments of the present invention relate to data communications, and in particular, embodiments of the present invention relate to systems and methods for organizing network IDs into OFDM symbols used by wireless communication systems. Background technique [0002] For personal communications, the advent of wireless technology has all but made the traditional telephone a thing of the past. As wireless technology advances, the sheer number of people who want to communicate wirelessly has been increasing significantly. "Cellular" telephones have evolved into multifunctional devices for relaying not only voice communications but also data. Some devices are also equipped with an interface to the Internet, allowing users to browse the World Wide Web and even download / upload files. As a result, these devices have transformed from simple voice devices to "multimedia" devices that enable users to receive / send not only sound but also images / ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26
CPCH04L5/0083H04L5/0007H04L27/261H04L5/0048H04L5/005
Inventor M·M·王B·弗尔采利K·K·穆卡维利R·克里希纳姆尔蒂R·维贾亚恩
Owner QUALCOMM INC