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Light-carried wireless ROF system and its realizing method

An optical-borne wireless communication and wireless technology, which is applied in the field of communication systems and can solve the problems of no large-scale use, expensive base station equipment, and few IP addresses.

Inactive Publication Date: 2006-12-27
BEIJING NORTHEN FIBERHOME TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To turn these beautiful dreams into reality means that the future communication method must have enough bandwidth, enough flexibility, and enough IP addresses. However, the current situation is that optical fiber communication can provide enough bandwidth, but access is inconvenient ; The current wireless communication can provide flexible access methods, but the bandwidth is limited, and there is a contradiction between bandwidth and flexibility
Radio frequency resources are getting tighter and tighter. In terms of coverage, the higher the frequency of electromagnetic waves, the smaller the coverage area, and more base stations are needed for complete coverage. In terms of cost, base station equipment is expensive, and the cost of installation, maintenance, and site selection is high. There is an urgent need to reduce the number of base stations, which is another contradiction between cost and coverage
Coupled with the currently used IPV4 protocol, there are fewer and fewer IP addresses available, and IPV6, which has a large number of address resources, has not yet been used on a large scale

Method used

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  • Light-carried wireless ROF system and its realizing method
  • Light-carried wireless ROF system and its realizing method
  • Light-carried wireless ROF system and its realizing method

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Embodiment Construction

[0013] Spectrum resources will become the bottleneck for the development of wireless communication. The frequencies below 3.5GHZ have been allocated, and the remaining frequency coverage from 10GHZ to 60GHZ is very limited. For the vast rural areas, suburbs, railways, and highways to achieve broadband mobility, a large amount of remoteness is required. For base stations, if all central base stations are used, the cost will inevitably increase rapidly, and operators cannot accept it. Therefore, the application of ROF in rural areas, suburbs, railways, and highways that use broadband mobile in the future will have a solid market demand. The WIMAX base station has a downlink rate of 1Gb / s and an uplink bandwidth of 100Mb / s. Such a dense base station can use a low-cost and simple way to realize the connection with the central station, only using ROF technology. The simplest way is the optical network composed of optical add drop multiplexer OADM (Optical Add Drop Multiplex) OXC (Optic...

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Abstract

The provided light-carrying wireless communication system comprises: an OADM embedded in remote station, an OXC to transmit with central station by two-way dual-fiber or single-fiber different-waveform, a core router connected with both OXC and OADM. This invention combines wireless mobile technique and optical network.

Description

Technical field [0001] The present invention relates to a communication system, in particular to the final realization of broadband mobile communication technology. Background technique [0002] Many experts have almost reached a basic consensus on the future development direction of communications: "Mobile broadband, broadband mobilization". B3G, E3G, LTE, WIMAX, etc. have all proposed the use of Orthogonal Frequency Division Multiplexing (OFDM) or Orthogonal Frequency Division Multiple Access (OFDMA) technology around 2009, using all IP and IPV6 to realize multimedia communication. To turn these beautiful dreams into reality means that future communication methods must have enough bandwidth, enough flexibility, and enough IP addresses. The current situation is that optical fiber communication can provide enough bandwidth, but access is inconvenient. ; Current wireless communication can provide flexible access methods but the bandwidth is limited, and there is a contradiction be...

Claims

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Application Information

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IPC IPC(8): H04J14/02H04B10/12H04L12/56H04B10/2575H04Q11/00
Inventor 余建国
Owner BEIJING NORTHEN FIBERHOME TECH CO LTD