The innovative technology UHP Dual-Gateway provides optimum solution for hierarchical networks and makes it possible to design such networks with single-hop connectivity using low-cost VSAT terminals and low-cost Regional Gateways (RGW). The Central Gateway (CGW) has a UHP TDM/TDMA Hub with at least one DVB carrier (TDM) and several TDMA return carriers. The Regional Gateway (RGW) also transmits a DVB (TDM) carrier and is capable of receiving one or more TDMA carriers.
UHP remote routers can simultaneously receive two TDM carriers from both Gateways (CGW and RGW), whereas each carrier can use its own MODCOD all the way to 256APSK. These two carriers provide single-hop connections from CGW and RGW to each remote terminal. In the return link, TDMA bursts transmitted by a given remote can be received by CGW and/or RGW, hence the connection is also single-hop. If required (when a remote terminal needs to transmit a high amount of traffic via a high-speed channel with a throughput of tens of Mbps), the remote terminal can also transmit its own DVB carrier (SCPC or MCPC) which can be received by CGW and RGW.
The Central Gateway (CGW) with its sophisticated Network Management System (NMS) is responsible for network control, which includes station access, timing, and resource assignment. Number of Regional Gateways (RGW) in the network is unlimited. Each remote is at all times connected with CGW and one RGW. UHP Dual-Gateway network employs standard UHP router models UHP-100 and/or UHP-200 with low-cost DRO LNB. Each of the remote routers has the dual DVB receiver option activated. CGW is a regular UHP TDM/TDMA Hub without any additional hardware or software options. RGW is implemented using another standard UHP product: dual router UHP-240, whereby one router is transmitting the DVB (TDM) Overlay carrier and the other is configured in TDM/TDMA Mesh mode in order to receive bursts from the local terminals. CGW treats RGW in the network as remote terminals, and has single-hop connectivity with all of them. If required, some or all RGW can also be connected with single-hop links via TDMA or DVB (TDM) Overlay.
Equipment cost for a VSAT hierarchical network with UHP Dual-Gateway architecture is comparable with that of a classic VSAT Star network. At the same time, UHP Dual-Gateway delivers superior value: single-hop connectivity in the regional sub-networks reduces latency and saves bandwidth by eliminating double bandwidth allocation.
Total Cost of Ownership (TCO) for UHP Dual-Gateway network is more than 40% lower than for a comparable Mesh TDMA network. Compared to Mesh, UHP Dual-Gateway also has a much lower cost of equipment (CAPEX). Besides, the software-defined architecture of the UHP products ensured that UHP Dual-Gateway network can be reconfigured to support Star and TDMA Mesh topologies without changing the equipment.
Since 2005 UHP Networks has been bringing disruptive innovations to the VSAT industry. The UHP product line is known for a number of industry firsts: from software defined remote, which achieves 8 times higher processing power per cubic inch than the nearest competitor, to the most versatile and lowest-cost Hub infrastructure with geographical redundancy. The time has come to revolutionize the design of hierarchical VSAT networks, radically improving their performance while at the same time making those networks more affordable. UHP Dual-Gateway is one major step in that direction.