System, method and network appliance for implementing overlapping multi-region by one subdistrict

Abstract

A system, a method and a network equipment for realizing that one small zone covers a plurality of zone. The system is composed of a plurality of radio-frequency groups and at least one baseband unit; one radio-frequency group corresponds to one zone in one small zone, one radio-frequency group corresponds to one data channel, one baseband unit is connected with a plurality of radio-frequency groups through a plurality of data channel; the radio-frequency groups are used to receive the upward signal transmitted by the user equipment in the corresponding zone and to transmit the upward signal to the baseband unit through the corresponding data channel, the radio-frequency groups receive the upward signal in the corresponding data channel and transmit the downward signal to the user equipment in the corresponding zone; the baseband unit receives the upper signal transmitted by the radio-frequency group in the data channel and transmits the downward signal to the corresponding radio-frequency group through the corresponding data channel. The implementation method of the present invention reduces the signal interface among the different zones in one small zone, and improves the capacity of the system; moreover, the method is favor of the break-up of the small zone, and the upgrading and the expansion of the capacity during the network evolution.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a system, a method, a base station and a wireless network controller for realizing one cell covering multiple areas. Background technique [0002] In the current communication system, one cell can cover multiple areas. Two main schemes for realizing cell coverage in multiple areas are introduced below. [0003] Solution 1. Realize the coverage of multiple areas in the cell by means of base station + repeater. This solution is shown in Figure 1 and Figure 2 in the accompanying drawings. [0004] In Figure 1, the three areas of Area C, Building A, and Building B belong to the same community. The near-end unit 1 and the far-end unit 1 form a repeater, and the near-end unit 2 and the remote unit 2 form another repeater, so that A and B in a cell are realized through the base station and the two repeaters. , C coverage of the three areas. Since the areas A, B, and C b...

AI Technical Summary

Problems solved by technology

[0009] Problem 1: Decreased system capacity

The repeater will increase the noise floor of the base station, which will not only interfere with all users in the same cell, but also increase the interference to adjacent cells; in addition, in the uplink direction, the radio frequency module in the base station will receive multiple coverage signals at the same time. In the downlink direction, when a user equipment in a coverage area receives the downlink signal sent to the terminal, it will also receive the user equipment in other coverage areas. The downlink signals sent, the downlink signals in different areas will interfere with each other; these factors will affect the system capacity

[0010] Question 2. If multiple areas in a cell need to be split into cells, it is necessary to add a radio frequency module to the base station, and re-wire the radio frequency module and the near-end unit in the base station, resulting in high cost of cell splitting. Difficulty splitting

[0012] Problem 1. Interference between users in the cell

[0013] Problem 2: Decreased downlink capacity

For example, in the downlink direction, if only UE2 in the low-floor area is talking, the transmit power of RRU2 is 1w, but due to the principle of digital combining and splitting, the transmit power of RRU1 is also 1w, which is a waste of power for RRU1 , which is equivalent to reducing the downlink capacity

In addition, if UE1 and UE2 in different areas are talking at the same time, according to the principle of digital combination and splitting, RRU1 will send downlink signals to UE1 and UE2 at the same time, so that UE1 will not only receive the signal it needs, but also receive the signal from RRU1. The downlink signal sent to UE2, for UE1, the signal sent by RRU1 to UE2 is not only useless, but also a kind of interference, which further reduces the downlink capacity

Images