Indosat Ooredoo, HTS Palapa N-1 satellite and China Great Wall

Tinuku ~ Indosat Ooredoo and Satelit Pasifik Nusantara (PSN) are forming a Palapa Satelit Nusa Sejahtera (PSNS) to purchase the China Great Wall Industry Corporation (GWIC) satellite. The memorandum of understanding was signed on Wednesday, May 17, 2017 in Jakarta for the latest generation of provider's high throughput satellite (HTS) in Indonesia.

Tinuku Why Indosat Ooredoo launches HTS Palapa N-1 satellite from China Great Wall

This HTS generation communications satellite named Palapa Nusantara 1 aka Palapa N-1 will be launched in China by GWIC in 2020. The US$200 million satellite will be placed at 36,500 kilometers just above Pontianak City in Kalimantan in 113 East Longitude.

Palapa N-1 to replace Indosat's Palapa D satellite positions that are already in technical expired age by 2020. Palapa D is the only remaining satellite of Indosaat Ooredoo, while the Palapa C series (C1 and C2) satellites have officially expired.

Indosat should not launch a satellite to replace Palapa C2 as the Indonesian government has handed over 150 degrees East Longitude slot for Bank BRI's BriSat Satellite.

In fact, Indosat has signed a satellite booking contract and has paid the persecure money, while the BriSat satellite has a very large operating cost, but abundant transponders should not be rented considering the BRI status as a bank service company is a special telecommunications provider.

High throughput satellite

Palapa N-1 satellite is very different in general satellites owned by companies in Indonesia. Its capability is not measured by footprint, but at the transmit power reaches up 12 gigabits per second (gbps).

The naming of HTS satellites is just a marketing gimmick and basically the same satellite. But unlike conventional, these satellite services have cells called beams and overlapping for reuse. Low transmission capability with 512 kbps link count needs bandwidth up to one megahertz (MHz).

A 36 MHz transponder produce 18 mbps, but C-in-C technology allows bandwidth savings of nearly 50 percent, although it depends on the strength and frequency used in this case C-band or Ku-band.

Conventional satellites such as Palapa D are designed to maximize coverage, while HTS maximizes the amount of data that can be transmitted where the Palapa N-1 satellite has a throughput of up to 12 gbps and the total throughput can be designed large or small depending on the utilization of bus frequency and power.

The bus is one part of the satellite that affects the payload of the transponder design. Large buses allow to transport more transponders with the risk of affecting satellite weights and ultimately at the cost of launching rockets.

The capability of satellite throughput of Palapa N-1 is not the largest the company will have in Indonesia. In 2018, Satelit Pasifik Nusantara will launch an HTS satellite called PSN-6 which has a 15 gbps transmission capability.

The Palapa N-1 will orbit early in 2020 and immediately migrate the tenants' property from the Palapa D satellite. Once the migration is complete, the Palapa D will be disposed of in the sky at 36,500 kilometers above Earth.

B2B business

Alexander Rusli, Director and CEO of Indosat Ooredoo, said B2B business revenue is not profitable and only accounts for one percent of total revenue. But satellites are also needed where most corporation customers want a complete mobile operator service.

Telecom operators are required not only to provide optical fiber, but also to satellite, since corporate users have branch offices in areas not covered by cellular or cable telephony services.

That's why the Palapa N-1 service is more geared towards B2B services, while retail services for individual customers remain available. For example Thailand has a HTS satellite that has broadband transmission for B2B services and retail services in Indonesia.

Indosat said to choose China Great Wall Industry Corporation considered reliable in cheaper price. Their satellite quality and reliability are parallel to any American or European satellite. The Long March launch rocket is also Ariane's equivalent, the rocket has a record 60 launches without fail.