WALKair 3000

WALKair 3000 is an advanced point-to-multipoint broadband wireless access solution, delivering Carrier Class, fiber-optic quality services at upstream and downstream rates of up to 36 Mbps. WALKair 3000 is designed for new and established carriers requiring proven last mile solutions for small and medium businesses and multi-dwelling and multi-tenant unit (MDU/MTU) applications. In addition, WALKair 3000 is the optimal solution for next generation cellular backhauling applications. 

This WALKair 3000 system is based on our industry-leading cluster of high spectral efficiency, frequency reuse and dynamic bandwidth allocation technologies. The solution delivers the highest coverage capacity available from any broadband wireless access vendor. 

WALKair 3000 provides a Carrier Class IP solution over the air, including full IP and ATM QoS. Operating in the 26 GHz band, WALKair 3000 offers up to 36 Mbps net payload per customer premise equipment (CPE). WALKair 3000 is fully integrated and can be collocated with the WALKair 1000 system, using several identical outdoor unit components and the identical infrastructure, network management and planning tools. 

WALKair 3000 not only operates in the same environment as WALKair 1000, but can also reside on the same cell, efficiently providing varying bit ranges to a variety of user profiles. Both systems can be deployed on their own, or in tandem, by carriers operating in the licensed spectrum. The integration of the WALKair 1000 and 3000 enables new carriers to deliver the most efficient overall solution to SME and large enterprise markets, facilitating high flexibility in service provision and creating the ideal business model for the given market. 

WALKair 3000 system enables operators to supply the most cost-effective entry level for the customer, depending on the customer's current capacity demands and subscriber needs. Each solution can evolve as a pay-as-you-grow modular architecture, exhibiting flexibility for dynamic growth and development as customer and subscriber requirements change. The key to structural flexibility is the adaptation of WALKair Base Station indoor unit architecture can be adapted to a specific deployment evolution phase. WALKair 3000 entry points are designed around three different Base Station platforms as follows: 

• Alvarix Solution (WALKair 1000 & WALKair 3000)@ 10.5GHz an 26GHz   
• WALKair 3000 BS-SA (Stand-Alone solution) @ 10.5GHz, 26GHz an 28GHz 

WALKair 3000 Highlights 

• WALKair 3000 enables full flexibility of BS platforms through its stackable architecture supporting Micro-Base Station as well as high capacity base stations. The BS-SA has been developed as a cost-effective, low-entry price solution where one sector has to be deployed. It is also ideal for initial project phases for which the business case model has not yet been approved.   
• Up to 34 Mbps per customer (upstream and downstream) symmetrical over 14MHz channels   
• Multi-carrier TDMA, up to four carriers per sector with single outdoor unit per sector   
• Dual modulation, 16QAM and QPSK with automatic switchover   
• full redundancy on outdoor units (RFU and ntenna), indoor units and E1 connectivity to the operator's backbone.   
• Full end-to-end QoS supporting IP   
• Flexible service provisioning combining committed and maximum information rates (CIR/MIR) and support for different classes of service levels   
• CPE services: IP (n x 10/100 Base-T), n x E1 / fractional E1   
• Extremely high capacity Base Station.   
• Highest spectral efficiency - 2.5 Bit/Sec/Hz   
• SNMP-based management system and powerful network planning tool          
• Co-location and full integration with WALKair 1000

Customer Premises Equipment

Comprised of an Indoor and Outdoor Unit, the Terminal Station (TS) is installed at the customer premises in a temperature controlled environment and interacts between the Customer Premises Equipment (CPE) and the designated Base Station (BS) providing a wide range of interfaces to the customer.

Terminal Station - Indoor Unit (TS-IDU)
The TS-IDU interfaces between the CPE and the WALKair TS RFU/Antenna (ODU), using the TDMA protocol to handle traffic to and from the BS. Supporting several types of interface ports, the TS-IDU delivers a wide range of advanced voice and data services. The TS-IDU is connected to the TS RFU/Antenna (ODU) via a single coaxial cable, and can be easily mounted in a rack or on the wall, or fit conveniently on a desk. Once the IF signal reaches the RFU, it is converted to RF.

The Terminal Station IDU is equipped with 2*10/100BaseT and two slots for optional E1 cards, supporting up to 8*E1 interfaces

Each TS-IDU contains an LCI port to be used by the local craft terminal for installation and maintenance purposes. The TS is powered either by a DC standard source (48V) or an AC source to the Indoor Unit. 

Base Station Equipment

Through dual polarization, the WALKair 3000 Base Station delivers a capacity of over 1 Gbps at 112 MHz allocation.

The BS components of the WALKair 3000 system are located at the center of the cell linking the backbone and multiple WALKair Terminal Stations via Ethernet or E1interfaces.

WALKair 3000 operates in the various LMDS bands 10.5GHz, 26 GHz and 28 GHz, using the multi-carrier TDMA/FDD access method. The Base Station-Base Unit leverages FDD duplexing for varying Tx and Rx frequencies, while employing TDMA to handle traffic from up to 64 Terminal Stations per carrier. Topologies consisting of multiple BS-BUs enable the deployment of a multiple carrier scheme, providing each carrier with a 14 MHz slice of the spectrum at data rates of 34 Mbps each.

The Base Station consists of several sectors where a single cell can be covered by 4 or 8 sectors. Each sector contains up to 4 Basic Units (BS-SA). Each Base Unit comprises a carrier, IF MUX, RFU and antenna.

The Indoor Unit is located in a temperature-controlled environment. The Outdoor Unit, which includes the RF head and antenna, is located on a pole with a clear line of sight to the Outdoor Units of the Terminal Stations.

An IF-cable connects the BS-BU (in the IDU shelf) to the BS Outdoor Unit (ODU) via the IF-MUX. It supports both the uplink and downlink IF signals and provides the ODU with DC power.

Base Station - Indoor Unit 
Stackable Architecture (SA)

The base station is comprised from one or more BS-SA units each can serve as a stand alone unit, or be a part of a full capacity base station. In addition the unique WA3Ks stackable architecture can support full redundancy on any systems component

The BS-SA include the modem cards with Ethernet ports for IP backbone connectivity, the NIU cards for E1 backbone connectivity and the IF module. Each BS-SA converts the IF signal to data toward the backbone via the Ethernet port or via the NIU card, and converts data to IF signals in the opposite direction towards the TSs.

IF Mux (Optional)
The IF Mux multiplexes the Tx signals from the BS-SAs and combines the output signal with a 48V DC power supply. The IF signal is sent to the RFU, located near the Antenna, via a coaxial cable, applying the reverse process for Rx signals. The IF Mux interfaces between the RFU and the BS-SAs and can connect to up to 4 BS-SAsvia the SMA ports.
The WALKair 3000 IF Mux supports both WALKair 3000 and WALKair 1000 BS-Bus for integrated deployments.

Base Station - Outdoor Units
RFU and Antenna
The RFU interfaces between the IF Mux and the Antenna. The RFU converts the IF signal, received from the IF Mux, to an RF signal. The signal is then amplified for transmission via the Antenna. The RFU is connected to the IF Mux and Antenna with a single coaxial cable.

Download the WALKair 3000 data sheet - PDF Version