Wireless Communication In-Building Solution

It is a network solution specifically designed to address the coverage and capacity issues of mobile communication signals within buildings, such as basements, elevators, stairwells, meeting rooms and other areas where traditional signals are difficult to cover.

Industry Overview

Global IBS Vision

As Indoor Distribution Integration Expert, ZTT is committed to provide professional In-building solutions for global customers, including designation and packaged goods for different kinds of solutions.

Industry Challenges

Multiple Frequency Bands

Modern communication requires support for multiple network standards such as 2G/3G/4G/5G, as well as multiple frequency bands including 700MHz, 900MHz, 1.8GHz, 2.6GHz, 3.5GHz, and 4.9GHz.

New Challenges of 5G

The Massive MIMO technology of 5G has extremely high requirements for antenna layout, which cannot be supported by traditional single-channel or dual-channel indoor distribution systems.

Capacity and coverage

In high-density user scenarios such as airports, stadiums, and large shopping malls, the network challenge is not only about "coverage", but also "capacity".

Interference problem

There will be co-frequency interference between micro base stations and pico base stations, and indoor Wi-Fi, Bluetooth and other devices will cause interference to cellular networks.

Our Solution

Global IBS Vision

ZTT is available to provide suitable solutions according to the scenario.

1. Traditional DAS Solution

2. Active Distributed and Integrated Solution

3. Roomtop Leaky Cable Solution

Traditional DAS Solution

Traditional DAS (Distributed Antenna System) is an indoor
coverage solution that distributes wireless signals through passive components such as feeder cables, splitters, couplers and indoor antennas to improve mobile signal strength and network quality inside buildings and other enclosed areas.

Active DAS Solution

Active DAS is a digital, fiber-based distributed antenna system that connects baseband units (BBU) to multiple remote radio units (RRUs) through fiber and distributes wireless signals to antennas for indoor coverage. lt provides high-capacity, high-quality, and scalable coverage for large and complex buildings.

Roomtop Leaky Cable Solution

Leaky cable, also known as radiating cable, is a specially
designed coaxial cable that allows RF signals to leak in and out along its length. lt provides stable and continuous wireless coverage in indoor and enclosed environments such as basements, parking areas, corridors and utility passages.

Value Contained

Co-Construction of Joint Lab

In 2018, China Tower and ZTT formally signed a strategic cooperation agreemen. ZTT maintains an open attitude towards collaborating with partners to develop new products in the future.

Cost Changes Overview-More Economical

Roomtop solution can help to save a lot of cost and with the advantages such as simple link design, reduce construction time, convenient maintenance.

Energy Saving ＆ Low-Carbon

As the amount of copper used decreases, energy consumption will be reduced and the environment will be protected.

Successful Cases

Katara Towers Project Lusail_MIMO (Traditional DAS)

In Qatar, we have collaborated with the local operator to achieve high-quality indoor wireless signal coverage. Katara tower is a successful case of the local market with product’s frequency from 698-3800MHz.

Nantong Hefeng Building Turnkey Project (Roomtp Leaky Cable)

Leaky Cable(7/8”)with terminated omni antenna.

5G NR: n41 2600 MHz; Bandwidth: TDD 100MHz; SISO.

KPI SS-RSRP＞-85dBm of 90% of covered area.

Single Layer Coverage Area: 1361 m²

China Tower Shandong Branch Office Building (Roomtop Leaky Cable)

Leaky Cable(1/2”) + 2 directional panel antennas.

Excellent signal coverage in the underground parking lot.

Single Layer Coverage Area: 7000 m².

MAG CITY Apartments & Townhouses (Traditional DAS)

In UAE, ZTT high performance coaxial cable, antennas, passive components and accessories with frequency from 617-3800MHz, help to achieve great signal coverage in high-end residential areas.

Successful Cases

Katara Towers Project Lusail_MIMO (Traditional DAS)

In Qatar, we have collaborated with the operator Ooredoo to achieve high-quality indoor wireless signal coverage. This is a successful case of the local market with product’s frequency from 698-3800MHz.

Nantong Hefeng Building Turnkey Project (Roomtp Leaky Cable)

Leaky Cable(7/8”)with terminated with omni antenna.

Wall Material: Heavy Concrete, Partition Dry wall, Glass Window, Plaster Dry wall, Elevator Cage, Heavy Wood Door.

Floor Height: 3m; Part Height: 2.5m; Ceiling Height: 2.1m; Wall Height: 3m.

5G NR: n41 2600 MHz; Bandwidth: TDD 100MHz; SISO.

KPI SS-RSRP＞-85dBm of 90% of covered area.

Signal source input power：approximately 1W.

Single Layer Coverage Area: 1361 m²

China Tower Shandong Branch Office Building (Roomtop Leaky Cable)

LTE Band, 850MHz, 2.1GHz

Single Layer Coverage Area: 1070 m²

Solution: All the cable are aluminum RF feeder cable, mostly 2/5”，few 1/2”.

MAG CITY Apartments & Townhouses (Traditional DAS)

A residential project in UAE market. With the use of ZTT high performance coaxial cables and components, it realized great signal coverage.

Solution-Detail-Wireless Communication In-Building Solution

Wireless Communication In-Building Solution

Industry Overview

Global IBS Vision

Industry Challenges

RF Copper Cable

Passive component

Repeater

Antenna

Accessary

RF Copper Cable

RF Copper Cable

RF Copper Cable

Our Solution

Global IBS Vision

Traditional DAS Solution

Active DAS Solution

Roomtop Leaky Cable Solution

Value Contained

Co-Construction of Joint Lab

Cost Changes Overview-More Economical

Energy Saving ＆ Low-Carbon

Successful Cases

Katara Towers Project Lusail_MIMO (Traditional DAS)

Nantong Hefeng Building Turnkey Project (Roomtp Leaky Cable)

China Tower Shandong Branch Office Building (Roomtop Leaky Cable)

MAG CITY Apartments & Townhouses (Traditional DAS)

Successful Cases

Katara Towers Project Lusail_MIMO (Traditional DAS)

Nantong Hefeng Building Turnkey Project (Roomtp Leaky Cable)

China Tower Shandong Branch Office Building (Roomtop Leaky Cable)

MAG CITY Apartments & Townhouses (Traditional DAS)