QUOTE (sorente @ Sep 25 2008, 18:46)

Despre RBS-uri nu stiu mai nimic, stiu doar ca TRE-urile sunt twin TRE, adica au capacitati duble.
OK, ca tot a venit vorba, twin TRE-urile astea, noi cum le vedem īn Netmonitor ?? Ca un singur TRE, sau ca 2 TRE-uri separate ?
Adica cu acest double TRE, poti de exemplu sa activezi Hopping-ul daca pe o celula nu ai instalat decāt un twin TRX din asta ?
QUOTE (sorente @ Sep 25 2008, 18:46)

Cat despre etichete: inseamna ca la next charge o sa il ia de acolo sa puna altul in loc?

Ah nu, nici vorba.
In poza de mai jos au dezlipit eticheta (care pāna la urma nu cred ca le serveste la nimic), dar se vede īnca 36/06...
QUOTE (sorente @ Sep 25 2008, 18:46)

P.S. Ti-ai tras aparat cu zoom suparat

Da, īn primavara mi-am luat un bridge Panasonic cu zoom optic x18.
QUOTE
Alcatel's new Twin TRX radio transceiver doubles the capacity of existing equipment, while occupying the same space in the rack. Scheduled for release in 2006, the new Twin TRX is particularly adapted for densely populated urban areas, with a maximum capacity of 24 TRX per Base Station cabinet.
Twin TRX transceivers can be installed in the full range of Alcatel's indoor and outdoor BTS. As an example, inside the Compact BTS Outdoor, a small and light outdoor BTS that can be mounted on a pole high off the ground, the Twin will offer a BTS capacity of 6TRX. Its design eliminates the need for site enclosures, providing cheaper installation, and can be powered by a solar panel, for full autonomy. Well adapted for low-ARPU areas, this solution is equally attractive for other markets.
Alcatel's Twin TRX can also be used in a different configuration to extend cell coverage for areas with low-density populations. The 2 TRX of the Twin TRX can be combined and offer an unmatched Very High output power of 110 W. Combined with the software activated feature called 4Receive Diversity (4RxDiv), the solution offers a very large cell radius boosting both the downlink and the uplink paths.
Si de la Ericsson (dTRU)
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QUOTE
Balancing coverage and capacity
While basic entry-level radio solutions may appear to be an optimum solution for sparsely populated rural areas, the configuration options available from more flexible RBS equipment enable operators to optimize radio network deployment to minimize the number of radio sites. Both the RBS' ability to reach the phone (downlink) and to receive the weak signal from the phone (uplink) need to be considered during radio network planning. Recent advances in GSM/EDGE radio systems optimize downlink power and uplink sensitivity to suit various conditions, meeting all coverage and capacity needs in a cost-effective way, and making the best use of network investments. These include: Transmitter Coherent Combining (TCC), which extends down-link coverage by doubling RBS output power; Four-Way Receiver Diversity (4WRD), which extends up-link coverage by combining signals from four antenna branches, and; Smart Range, which offers scalable capacity in base station sites with large cell ranges.
In combination, these techniques deliver much larger cell areas, reduce the number of radio sites required and cut CAPEX per square kilometre significantly -- often by more than half.
The scenario that follows illustrates how sa GSM operator can start deployment with large cells providing limited capacity, and add capacity over time as it is needed to meet new traffic demands, as shown in Figure 1 (above). It shows how an initial site with extreme coverage can have its capacity expanded more than ten-fold through the addition of transceiver (TRX) hardware and the efficient use of BSS software features.
In the first step, coverage is maximized and initial investment is minimized by keeping the number of sites to a minimum. Double TRUs, or dTRUs, containing two TRX in one physical unit, can be configured as a single TRX with double the output power; performance can be further enhanced using four-receiver diversity in the uplink. As traffic demands grow, step 2 enhances capacity simply by the insertion of an additional dTRU per cell, enabling up to three times more subscribers to be served due to effects from trunking efficiency. No upgrade to the initial antenna and feeder system is required. For step 3, no site visit is needed. From the operations centre, the second dTRU is configured back to a higher-capacity mode and three TRXs are provided per cell. Capacity is now more than five times the initial configuration. No changes to the site are required. An additional Dynamic Overlay/Underlay feature is introduced to provide traffic steering between the two layers in the cell with different coverage.
Finally, step 4 can also be performed without a site visit and increases capacity to fourteen times the initial configuration. With load-based Dynamic Half-Rate, traffic channels can be allocated at a certain blocking threshold value. The Half-Rate feature enables two users to share the available resource in the cell with the compromise of some degradation of voice quality. At peak times, all connections might use the Half-Rate feature. As traffic levels grow even higher, operators have two options available for adding more capacity. One option is to add more macro RBS capacity by deploying additional RBS cabinets at the same site. The other is to deploy micro RBSs to offload macro cells. As the operator only has to make this decision once the traffic has grown sufficiently, the risk is removed from the investment and pay-back calculations are more certain.