Radio Access

ENET Platform for Wireless Transmission

Wireless transmission is achieved today by two main technologies such as point-to-point line-of-sight communications or Wireless Local Area Network (WLAN).
Point-to-point line-of-sight communications mostly used for wireless broadband services and high data traffic backhaul over proprietary microwave wireless transmission technologies. However these two wireless links are not interoperable with other vendors technologies, once two such nodes get too far apart they can no longer communicate, and may result in frequency congestion in highly populated areas that prevent any throughout scalability in case the microwave line is not sufficient. Current microwave backhaul solutions can deliver certain throughput dictated by proprietary microwave radio designs of specific vendors, where the main limitation of those systems is that they can only form a single stream of data over single radio link, since it is impossible to run several radio links to the same direction in a line-of-sight, due to cross-talk.

For wider area communications, Wireless Local Area Network (WLAN) is used. WLANs are often known by their commercial product name Wi-Fi. These systems are used to provide wireless access to other systems on the local network such as other computers, shared printers, and other such devices or even the internet. Typically a WLAN offers much better speeds and delays within the local network than an average consumer’s Internet access. WLAN may use a mesh multi-path, multi-hop wireless local area network (WLAN) for outdoor. Such wireless mesh network is managed at Layer3 level to enable network connectivity between sites over WLAN mesh networks. Current wireless mesh networks are limited by capacity of the wireless link, without ability to scale throughput by aggregation of several links to transmit single IP stream, and in case of failure traffic needs to reroute through alternate route using software based Layer3 protocols.

Ethernity offers a solution that can connect multiple wireless links to form wireless transmission of 10Gbps, where each link is directed in a way that prevents interference between adjacent wireless links, with a potential maximum connectivity of 12 wireless links in a star topology.

Ethernity offers a unique packet transmission solution for carrier grade scalable 10G mesh wireless backbone in point-to-point and mesh network based on the off-the-shelf wireless technology with maximum availability and scalability. As a result the scalable solution provides dramatic CAPEX and OPEX reduction.

Ethernity’s solution runs packets or a single IP stream over multiple links with the ability to transmit those packets over standard switches and aggregate data into a single stream using packet reordering technology and jitter buffer. Furthermore this technology provides maximum service availability at no cost, since in a case of wireless link or area failure the stream is not lost and only suffers from certain bandwidth reduction. Other mesh solutions would need routing protocols to reroute traffic over other connection/links.

The point-to-point solution can evolve to connect multiple points in a mesh topology, so a single gateway device aggregates a data stream coming from multiple sources. The solution includes two main devices:

1. CPE that connects several stream sources or links being part of a mesh, and routes data packets coming from other wireless links towards the gateway. Each CPE provides Carrier Ethernet features such as QoS, OAM and CFM.
2. Gateway – a single gateway that supports a cluster of multiple CPEs routing streams towards the relevant CPE, and collects fragments of packets from multiple CPEs to form the original stream.

Benefits of Ethernity’s wireless mesh solution:

  • 10Gbps Wireless Virtual Connection – delivers packet transmission over multiple wireless links through maximum network availability while maintaining end to end network delay on flow by flow bases
  • Scalable Throughput – Ethernity wireless backbone solution offers  multipoint-to-point scalable wireless network through the ability to connect many Wi-Fi links per virtual connection together with a single gateway to aggregate streams coming from multiple routes
  • Maximum Availability –  Supports scalable and maximum mesh network availability without the need to reroute the entire traffic in case of link failure. With Ethernity solution a certain link or area failure only decreases momentarily the throughout
  • Lossless – 50ms buffering to enable re-transmission in a case of link failure
  • Fiberless to The Home – Fiber to the curve with directional wireless to home
  • Standard Wi-Fi – Use standard Wi-Fi technology without the need to cope with high operational cost of proprietary microwave technology
  • Data Offload – Offers Wi-Fi offload and data traffic conversion to a standard Carrier Ethernet network