MDAS (Multiservice Distributed Access System Scheme) structure

Abstract

The invention discloses an MDAS (Multiservice Distributed Access System Scheme) structure which comprises an optical fiber transmission system, a compound optical cable transmission system and an optical fiber distribution system, wherein the optical fiber transmission system comprises an MAU access unit; the compound optical cable transmission system comprises an MEU expansion unit; the optical fiber distribution system comprises a placed MRU remote unit, an indoor-distributed MRU remote unit and a beautified MRU remote unit. The MDAS structure has the advantages of three-layer architecture, multi-network integration, flexible configuration, small-power and accurate coverage of an optical fiber / reticle transmission medium, adaptability of multiple types of remote ends to different scenes, total system monitoring, and visual asset management; the MDAS structure is capable of effectively reducing interference of adjacent regions, and reducing inter-cell overlapping coverage degree as much as possible; integrated planning is performed by use of an indoor-outdoor cooperative mode; accurate micropower coverage is combined with adjustable power of remote ends, so that the overlapping area of cells is reduced, and a coverage boundary is controlled.

Description

technical field [0001] The invention relates to the field of power supply technology, especially the MDAS system architecture. Background technique [0002] MDAS (Multiservice Distributed Access System Solution) is a multi-service distribution system that can support multiple operators, multi-standards, and multi-carriers, and integrates WLAN systems to solve voice and data service needs in one step. Compared with traditional analog distribution systems , and has the characteristics of hybrid networking, delay compensation, automatic carrier tracking, and low uplink noise floor. The digital system in MDAS is subdivided into CDMA system, GSM / DCS / WCDMA dual-mode system, and GSM / DCS / TD-SDMA dual-mode system. While providing 2G and 3G mobile communication services, it also integrates WLAN system to meet the high requirements of users. Speed ​​wireless data transmission requirements. [0003] Limitations of traditional distributed systems - scheme design, adjustment and optimiz...

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Problems solved by technology

[0003] Limitations of traditional distributed systems - scheme design, adjustment and optimization are difficult, link budget is complex, power error; difficult to control, design margin is limited, adjustment, debugging, and optimization space are limited; traditional indoor front-end nodes have large feed power and intermodulation interference High risk, multi-system, multi-carrier, high load, high requirements for front-end device indicators; traditional distribution system limitations - difficult property coordination and construction, many basic platform nodes, different standard frequency bands, it is difficult to meet the optimal performance of each network WLAN integration , the general re-distribution of optical fiber or network cable cannot be integrated with broadband services, and the indoor installation environment is limited; the traditional distribution system is limited-property coordination and construction are difficult, the traditional room division method is well known to the public, and coordination and implementation are difficult. The requirements for the construction environment are high, antennas are difficult to deploy on demand, and network upgrades require multiple coordination and multiple constructions; the limitations of traditional indoor distribution systems—the quality of the distribution system and assets are difficult to monitor, and all nodes from the source access to the end of the distribution system are completely missing Monitoring, system quality is difficult to monitor effectively, and assets cannot be managed visually

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