Transcript
Single Net Fiber-DAS The ever increasing complexity for cellular operators today means that coverage solutions must be flexible and able to cope with a variety of services in a cost-effective way. Today’s indoor coverage is no longer a simple matter of transporting the radio signals to the antenna, there are multiple services involved such as WiFi and a mixture of traditional Fiber-DAS as well as Picocells and remote radio heads together with the services that do not offer such possibilities. The Single Net Fiber-DAS developed by DeltaNode Solutions is a solution in a mixed and complex environment to transport all the necessary signals to multiple remote locations in order to get the maximum coverage possible.
Single Net transport solution All blocks are modular and used on an “as needed” basis. The system is capable of transporting traditional analogue Fiber-DAS signals for multiple bands and multiple operators on a single fiber. Multiple sectors and MIMO signals are transported by using different wavelengths on a single fiber and without interfering with each other. The Master Unit can be fitted with interfaces for Gigabit Ethernet transport used to run an integrated WiFi access point in the Remote Unit, or exposing a Gigabit Ethernet port for the Local Area Network where the remote is located, as well as CPRI / OBSAI interfaces in the case that traditional Fiber-DAS will not work, such as when the operator is using TDD frequencies rather than FDD. Pico and Femto cells can also be connected via the remote unit Cellular Cellular WiFi directly. Antennas Antennas Antenna Remote Unit Master Unit
Digital interfaces
CPRI/OBSAI
BTS
WAN
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Fiber-DAS
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WiFi AP
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RF interfaces
Single fiber strand Analogue / Digital Mixed Transport
Fiber-DAS
RF Digital
CPRI/OBSAI
Ethernet Ethernet
RRH
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LAN
Remote Unit
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WiFi AP Fiber-DAS CPRI/OBSAI
Network of WiFi Nodes h t Et ab i Gig
Ethernet
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et ern
BTS BTS BTS
Pico- or Femtocells
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OBSAI / CPRI Base stations can insert their RF signals by traditional analogue means, or they can employ the Single Net to transport their signals using digital interfaces such as CPRI or OBSAI through to the remote port where the signals are recovered and fed into a Remote Radio Head (RRH). Using the Gigabit Ethernet interface it is also possible to attach Pico/Femto base stations directly to the remote unit’s Ethernet port and run them as a part of the network.
Time-Division Duplexing Today operators are starting to employ TDD systems for LTE in many places. Since a traditional Fiber-DAS solution works by separating the uplink and downlink in frequency, TDD system cannot work properly in such system. The solution here is to employ the Radio Base Station’s digital interface and transport it verbatim to the Remote Unit where a Remote Radio Head (RRH) can be connected.
Co-siting with WiFi Today people expect WiFi and Cellular coverage in most places they visit. When cellular coverage is installed using a Fiber-DAS system from DeltaNode, WiFi coverage can be installed at the same time. The Ethernet transport extends the LAN into where the remotes are placed, and then used to connect any Ethernet-compatible device to the same network. A WiFi access point can also be built-in to the remote unit if that is needed and the signals combined with the RF signals from the other parts of the system. Since the footprint of a WiFi access point is so much smaller than the normal footprint of a Fiber-DAS transceiver system several AP:s may be needed to get the same coverage. This means that together with the coaxial cables in the passive antenna network simple Ethernet twisted pair cables can be used to connect the WiFi access points to the remote unit.
Single fiber strand – multiple wavelengths
In this way a mixture with traditional Fiber-DAS, Ethernet connectivity, WiFi and Remote Radio Heads can be achieved within the same network and they can all co-exist on a single strand of fiber. This is important because “black fiber” in the street, through tunnels, airports and other places are becoming scarce and the cost of deploying new fiber is in some cases very high.
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All Things Are Possible! All operator bands available for RF transport Public safety, paging, VHF PMR and FM broadcast as options Any optical CPRI / OBSAI interface can be accommodated Gigabit Ethernet transport available between head-end and from any remote Best in class noise figure for RF links Repeaters can be built-in to the head-end for when there is no base station on site to provide RF signals System and sector separation on different wavelengths as required Built-in WiFi possible with or without DHCP server and DNS as required. External WiFi APs of any type may be connected to the external Gigabit Ethernet from any of the remotes Site-to-site high Gb Ethernet Virtually unlimited number of remotes from a single head-end Any number of sectors MIMO ready with complete signal separation from head-end to the actual antennas
Built for your needs The system will be tailored to the coverage needs of each project. This includes up to 4 separate RF chains in each remote unit, remote units may also be daisy chained should MIMO or more than 4 bands be required. All functions are options that can be added later on if needed. The head-end is by far one of the most flexible solutions in the industry. The 19” rack mounted frames supports all DeltaNode modules out of the box and they can later be extended and equipped with more modules such as base station interfaces, fiber-optical modules, patch panels and combining/splitting gear both for the RF-side and optical side as your system grows with additional frequencies and technologies, sectors or the addition of MIMO. Mixing of various technologies in the same band is not a problem for the DeltaNode solution and has been done successfully with GSM, CDMA, WCDMA, LTE. The integration of lower frequency systems such as VHF, PMR, TETRA and even FM radio broadcast is also possible. Contact us for a discussion of your needs and we will find you a suitable solution to your coverage problem.
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ABOUT DeltaNode is a total solution provider of high performance quality coverage extension equipment and services. DeltaNode has its office and production facilities in Stockholm, Sweden. DeltaNode has extensive experience in the fields of RF coverage using repeaters and Fiber-DAS systems. We have delivered a large number of successful projects in Sweden, Iceland, USA, Canada and Mexico to mention a few of our successful markets.
CONTACT For more information about DeltaNode Solutions and our line of High Performance Coverage products, please do not hesitate to contact us: E-Mail: Web:
[email protected] www.deltanode.com
Deltanode Solutions AB Hammarby Fabriksväg 61 120 33 STOCKHOLM SWEDEN
www.deltanode.com
Phone: +46-(0)8 684 480 00 Fax: +46-(0)8 684 480 10
Email:
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