Single frequency network planning method based on orthogonal frequency division multiplexing technology

A single frequency network, orthogonal frequency division technology, applied in the field of wireless communication, can solve problems such as channel interference and affecting network quality

Inactive Publication Date: 2008-02-13
ZTE CORP
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Problems solved by technology

However, if the single frequency network system not only sends the service of the entire network, but also sends some services with regional differences, that is, the characteristics of the multi-frequency network (MFN: Multiple Frequency Networks) in the single frequency network, then it will lead to geographical boundaries. Channel interference occ...

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  • Single frequency network planning method based on orthogonal frequency division multiplexing technology
  • Single frequency network planning method based on orthogonal frequency division multiplexing technology
  • Single frequency network planning method based on orthogonal frequency division multiplexing technology

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Embodiment Construction

[0063] Referring to Figure 1, the network side in the single frequency network system is mainly composed of the network center control node and the transmitter, and the network center control node uniformly transmits media stream data to each transmitter, but the data transmission between the network center control node and the transmitter There can be many kinds of media, such as cable, microwave, satellite, etc.

[0064] Figure 2 shows frame planning based on time division, that is, resources are uniformly planned for a time-division single-frequency network. In this frame, each channel contains one or more OFDM symbols, and control channels 1 and 2 are control channels that are not affected by regions. Channels, all transmitters in the single frequency network send the same control information on these two channels, control channels 3 to n are control channels affected by the region; traffic channels 1 and 2 are traffic channels that are not affected by the region, in the si...

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Abstract

The invention discloses a single-frequency network method base on orthogonal frequency division multiplexing technique, dissolving the problem that channel interference between sub-networks at the junction of the existing single frequency network area affects the network quality of the borders. The invention comprises the following steps: the invention undergoes unified resource planning about the single frequency network; the invention undergoes unified addressing about areas provided with service from the single frequency network so that adjacent areas have different network addresses; the invention synchronizes aerial signal of the single frequency network; the invention classifies a transmitter and a honeycomb in the single frequency network; the invention determines the best distance between the transmitters in the single frequency network; the invention deals with a control channel of the single frequency network related to area; the invention deals with a business channel of the single frequency network related to area. The single frequency network needs to undergo reasonable planning about regional service at the junction of different areas, reduces channel interference between systems in different areas and improves service quality of the single frequency network.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method for planning a single frequency network based on Orthogonal Frequency Division Multiplexing (OFDM: Orthogonal Frequency Division Multiplexing) technology. technical background [0002] OFDM technology is a multi-carrier digital modulation technology and a multiplexing technology that can realize high-speed wireless digital communication. Because OFDM technology has the characteristics of high transmission rate, strong anti-multipath interference ability, and high spectrum efficiency, it has received more and more attention in the field of communication. It is currently used in DAB (Digital Audio Broadcasting: Digital Audio Broadcasting), DVB (Digital Video Broadcasting: Digital Video Broadcasting) and IEEE802.11-based WLAN (Wireless Local Area Networks: Wireless Local Area Networks) and other fields have been practically applied, and OFDM modulation technolo...

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Application Information

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IPC IPC(8): H04Q7/34H04Q7/38H04B7/26H04J11/00H04L27/26H04W16/14
CPCH04W16/14
Inventor 朱晓光
Owner ZTE CORP
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