Multiple wireless communication system-merged indoor distribution system and work method thereof

Abstract

The invention provides a multiple wireless communication system-merged indoor distribution system and a work method thereof, and relates to the indoor distribution system. At present, on the basis of the indoor distribution system, the settling of the intermodulation interference problem and the reduction of the total construction cost of three service providers cannot have both. The multiple wireless communication system-merged indoor distribution system includes a first main trunk, a second main trunk, a first combining device, a second combining device and electrical bridges. The first main trunk is connected with one or more signal sources through the first combining device. The second main trunk is connected with one or more signal sources through the second combining device. The signal sources are divided into a first signal source group connected with the first combining device and a second signal source group connected with the second combining device. Two input ends of one electrical bridge are connected with an output node of the first main trunk and an output node of the second main trunk. Output ends of the electrical bridge are connected with indoor distribution networks. The technical scheme solves the intermodulation interference problem and reduces the investment and construction cost of co-construction and sharing.

Description

technical field [0001] The invention relates to an indoor distribution system, in particular to an indoor distribution system and a working method for the fusion of multiple wireless communication systems. Background technique [0002] The indoor distribution system is a communication scheme aimed at indoor mobile phone user groups and used to improve the mobile communication environment in buildings; it uses the indoor antenna distribution network to evenly distribute the signals of the base station in every corner of the room, so as to ensure that the indoor area has ideal signal coverage of the mobile communication system. [0003] my country now has three communication operators, China Mobile, China Unicom and China Telecom. Each communication operator has two or three mobile communication technology standards, that is, each communication operator needs to distribute two or three types of mobile communication network signals evenly in the building In every corner of the ...

AI Technical Summary

Problems solved by technology

[0008] 1. The three operators all hope to adopt a set of indoor distribution system to achieve co-construction and sharing to greatly reduce the total construction cost. However, since the problem of intermodulation interference has been unable to be effectively controlled, it is difficult to implement the co-construction and sharing scheme of an indoor distribution system

[0009] 2. If the method of building uplink and downlink indoor distribution systems is adopted in order to avoid intermodulation interference during co-construction and sharing, the construction cost of an additional indoor distribution system will be added

[0010] 3. The combining device POI used for combining 6-way and more than 6-way communication network signals has a high cost due to its complex structure, which is generally equivalent to the construction cost of 0.3-0.5 sets of indoor distribution systems, resulting in an increase in construction costs

[0011] 4. Due to the complex structure of the multi-system combining equipment POI, the signal power of the mobile communication network will be significantly reduced. In order to compensate the signal power, additional communication system equipment needs to be added in the design scheme. Generally speaking, the increased cost of communication system equipment It is equivalent to the construction cost of 0.4-0.6 sets of indoor distribution system, which again causes the construction cost to rise

[0012] 5. In the case where there are only two operators to jointly build and share, adopting this technical solution of building a set of indoor distribution systems for uplink and downlink, the total cost must exceed that of the two operators due to the increase in POI and additional investment in communication equipment. The sum of the individual construction costs of the operators

[0016] 1. In order to achieve uniform distribution of signals in the building, an indoor distribution system generally needs to use thousands of feeder connectors, and each feeder connector is manually assembled on the feeder on site. It is impossible to ensure that each feeder connector is assembled perfectly.

[0017] 2. The technical level of the construction workers who assemble the feeder joints is uneven, and it is difficult to greatly improve the overall assembly quality of the feeder joints

[0018] 3. Various methods such as redesigning the mechanical structure of the feeder connector, improving the coating process of the outer conductor and inner conductor, and improving the locking degree of the connector and the feeder wire still cannot solve the intermodulation interference problem of the indoor distribution system

[0019] 4. Even if there is no problem with the assembly of the feeder connector, intermodulation interference may still occur at the connection between the feeder connector and the device due to stress changes; we have found in many tests that even a slight vibration of the feeder will cause a great change in the intermodulation index

[0020] To sum up, based on the fact that the installation environment of the indoor distribution system is too complex and harsh, the intermodulation interference problem cannot be solved by only improving the assembly process and the quality of the feeder joints, let alone reducing the total construction costs of the three operators

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