22 | 03 | 2018

Ritz Carlton HK guest Wi-Fi@2009-2010

The top luxury hotel, Ritz Carlton HK located above 100/F of ICC building at HongKong, with over 300 guest rooms and other facilities. As part of the whole structured cabling installation, we also took care of over 200 access point installation for entire hotel coverage.

The tender requirement was having access points installed at the corridor but eventually the walls blocked all the signal. To fulfill the tender and also avoid unexpected hardware cost, DAS (Distributed Antenna System) was introduced by us. The idea was having the Wi-Fi signal propagate along the coaxial cable into the room then radiated the room by a small antenna. The solution completely solved the signal problem.

During maintenance of the Wi-Fi access point, engineer does not required to access the guest room. This is a great advantage to hotel operation as no interruption to guests while maintain Wi-Fi service level.

DAS (Distributed Antenna System)

SaSa Supreme @2013


SaSa Supreme is located at CauseWay Bay, opening ceremony at 12th September,2013. The shop provides a full scale free Wi-Fi service with hotspot page which customer/guest is invited to leave e-mail address for direct marketing.

The Wi-Fi infrastructure was built by 4 Aruba Instance Access Point which managed by a virtual controller formed by these 4 AP without extra cost.

Crown Motors Wi-Fi@2008


While relocating the HongKong car parts warehouse of HongKong from CT4 HLC to Yuen Long maintenance workshop and office, CROWN MOTORS HK invited us to provide wireless solution for inventory applications with Wi-Fi enabled handhelds. The previous network in HLC was formed by Cisco AP which installed time by time when necessary, resulted difficulties to manage.

The design must be substantial to fulfill requirements:
- no disconnection when roaming between access points
- 900 sq. meter area with basically full with metal car parts which create reflection and so interference of wanted wireless signal
- two layers of storey divided by metal brace generally reflect signal that create noise
- minimize no. of Access Point to reduce TCO and complicate  network design
- a throughput of at least 1Mbps  TCP connection to run terminal service application

The Solution

After detail study, anlysis and trial of the suggested solution. We combined Wi-Fi DAS with MERU network solution. Users now are able to connect to the network and servers and running application smoothly with only a total of five access points with resilience.

A reliable and robust wireless network is crucial to business operation, and so is a good planning and design of with detail requirements listed by project team which formed by IT department, end users and the contractor.

Campus Wi-Fi with Radius on Active Directory@2012

Wi-Fi authentication by Radius was rarely implemented because of complexity of understanding and using encryption and authentication technologies. Against the complexity, the operation of a Radius enabled Wi-Fi is extremely simple:

Each teacher in this school case has a notebook for their school works which already a member of a Active Directory Domain. The notebooks now connect school wireless network by teacher AD account automatically, no necessary for any password input.

Advantages of Radius (802.1X) with Active Directory:
1. Single-sign-on, user only need to login once.
2. The wireless encryption key frequently and automatically change gives the most highest security wireless infrastructure.
3. No extra hardware cost as school already has AD servers and AccessPoint installed.
4. Fast implementation
5. Radius also support android and IOS so same infrastructure can be shared to smartphone users.

WLAN security

Container Terminal Wi-Fi Enhancement@2010

Wi-Fi technology is now crucial acting as the major role to connect industry's outdoor machinery and equipment altogether. However, Wi-Fi channels are very limited resources that using these channels and radio environment requires cutting edge techniques and outstanding management. Main factors concern the successfull of the network are:

1) radio management which includes channel assignment, signal level and signal noise ratio
2) network management such as topology, bandwidth and routing
3) security managment at different OSI layers

ITSHK has been invited to investigate one of the Wi-Fi networks in one of the major container terminal of HongKong. The whole process took one year including enhancements activities. During that, ITSHK gathered all the data and analysed the true factors that impacted, and proposed solutions to solve the problems.