Method, system and device for data transmission

Abstract

The invention discloses a method of data transmission, a system and a device thereof, which are applied in a system comprising at least two APs, a filter combiner / splitter, an antenna feed device and a terminal, wherein the method comprises the following steps: respectively filtering nonoverlapping channels by the filter combiner / splitter, respectively loading indication data sent by the AP on the nonoverlapping channels, combining the indication data loaded on the nonoverlapping channels after the filtering by the filter combiner / splitter, and sending the indication data after the combing to the terminal through the antenna feed device by the filter combiner / splitter. The invention eliminates the inferences of adjacent channels among the channels of WLAN by means of filtering, realizes the access of a plurality of APs using different WLAN channels in an indoor distributed system, and is further provided with a user access broadband of the WLAN system.

Description

Technical field [0001] The invention involves the field of communications technology, especially a method, system, and equipment that increases data transmission of user access density. Background technique [0002] The development of WLAN (Wireless Local Area Networks, Wireless LAN) technology has enabled people to get rid of the restraint of wired networks and access network resources more convenient, flexibly, and quickly. With the advantages of "simple, flexible, advanced", WLAN technology is rapidlyIt has been popularized, and many European and American countries and regions have launched the construction of "wireless cities". [0003] At present, the wide -range WLAN networking method is the networking method of the FIT (thin) AP (access point, access point). Add AP to the access layer.Line) or Ethernet dedicated line access to BAS (Basic Assembler Program, broadband access server), and then the BAS access to the city network.AP is responsible for converting digital signals...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the modulation method, a certain amount of out-of-band energy will be generated outside each channel. Since the distance between non-overlapping channels of WLAN is very narrow, generally less than 5MHz, the out-of-band energy of any channel has a large impact on other channels. will interfere

As a result, in the prior art, only one AP using a certain WLAN channel can be accessed in the indoor distributed system at most, and the user access bandwidth of the WLAN system cannot reach the maximum

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