Frequency soft multiplexing system and method

A technology of frequency and frequency band, applied in the field of wireless communication, can solve the problem of low frequency utilization rate, achieve the effect of improving utilization rate and avoiding interference

Inactive Publication Date: 2007-12-26
HUAWEI TECH CO LTD
View PDF0 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Regardless of the frequency soft multiplexing method or the partial frequency soft multiplexing method, the frequency utilization rate is relatively low. For example, in the frequency soft multiplexing with a frequency reuse factor of 3, each cell can only get 1 / 3 The frequency is the main frequency. For example, in the partial frequency soft reuse with the frequency reuse factor of 3, each cell can only get less than 1 / 3 of the frequency as the main frequency.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Frequency soft multiplexing system and method
  • Frequency soft multiplexing system and method
  • Frequency soft multiplexing system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific implementation methods and accompanying drawings.

[0026] When the primary and secondary frequencies are divided, it is not necessary to satisfy that the primary frequencies do not overlap each other, because when the frequency bands of the adjacent borders of adjacent cells overlap, there will be greater interference, so in order to reduce the adjacent borders of adjacent cells interference, the main frequency used for adjacent border communications, as long as the frequency bands do not overlap each other, and for the junction of three cells, the frequency bands selected at the junction must not overlap each other for the border to which they belong. Therefore, if the main frequency is allocated in this way, the main frequency between the various cells can be overlapped, that is, t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The system thereof comprises: a frequency-band segmenting module. The system frequency band segmented by the frequency-band segmenting module comprises M sub frequency bands, M is an integer >1. It also comprises a master-slave frequency allocating module used for allocating sub frequency bands for the adjacent cells whose boards are not overlapped each other, which is used in boarder communication. After allocation, at least frequency bands of two cells used in board communication are overlapped. Said master-slave frequency allocating module also allocates the slave sub frequencies bands not overlapping the frequency band used in boarder communication for each cell, which are used in intra-cell communication.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to frequency multiplexing technology in the field of wireless communication. Background technique [0002] Wireless communication systems are usually distinguished by geographical areas, and each communication area in the wireless communication system may be called a cell (cell), such as a cellular wireless communication system. [0003] In order to improve the capacity and spectrum efficiency of broadband wireless communication systems, some multi-carrier technologies have been developed. The basic idea is to divide a broadband carrier into multiple sub-carriers and transmit data on multiple sub-carriers simultaneously. In the application, the width of the subcarrier is required to be smaller than the coherent bandwidth of the system channel, so that the fading on each subcarrier is flat fading, which can reduce the crosstalk between symbols, and does not require complicated cha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04L27/26H04J1/04
Inventor 胡宏杰蒋培刚
Owner HUAWEI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap