Bts installation commissioning pdf

Figure 2. Operators can therefore bridge the past with the future. By making existing sites future proof, investments are protected while migrating to 3G. RBS is a high capacity, compact outdoor macro radio base station supporting up to twelve transceivers per cabinet. It is possible to build one, two and three sector configurations including dual band configurations in one cabinet. Keeping the successful characteristics of the existing RBS portfolio and improving functionality as well as operation and maintenance makes the RBS a very cost-effective solution for growing GSM operators.

Site space is often a limiting factor for capacity growth. On many sites, two or more existing cabinets can be replaced by one RBS This is of major importance, since it makes it possible to reuse the space to rollout WCDMA equipment. Also interesting for new locations; the RBS offers a complete solution in stand-alone cabinet which rapidly can be implemented outdoors.

Reducing the Total Cost of Ownership TCO to capture revenue in new growth markets requires reducing both capital and operating expenses to levels not previously seen in the industry. Whether your growth markets require broader coverage, increased capacity, or enhanced quality, the RBS is designed to deliver the higher performance, faster time to service, and greater simplicity essential in minimizing TCO.

In other words, antennas convert electromagnetic waves into electrical current and vice versa. Antennas are used in systems such as radio and television broadcasting, point-to-point radio communication, wireless LAN, radar, and space exploration. Antennas usually work in air or outer space, but can also be operated under water or even through soil and rock at certain frequencies for short distances. At its resonant frequency, the wavelength is slightly over twice the length of the half-wave dipole.

The quarter-wave vertical antenna consists of one arm of a half-wave dipole, with the other arm replaced by a connection to ground or an equivalent ground plane. A Yagi-Uda array consists of a number of resonant dipole elements, only one of which is directly connected to the transmission line. The quarter-wave elements of a dipole or vertical antenna imitate a series-resonant electrical element, since if they are driven at the resonant frequency a standing wave is created with the peak current at the feed-point and the peak voltage at the far end.

When fed with an RF current at the resonant frequency, the quarter wave element contains a standing wave with the voltage and current largely but not exactly in phase quadrature, as would be obtained using a quarter wave stub of transmission line.

The current reaches a minimum at the end of the element where it has nowhere to go! The voltage, on the other hand, is the greatest at the end of the conductor and reaches a minimum but not zero at the feed point. Since that voltage pattern is almost in phase quadrature with the current, the impedance seen at the feed-point is not only much higher but mainly reactive.

Although a resonant antenna has a purely resistive feed-point impedance at a particular frequency, many if not most applications require using an antenna over a range of frequencies. A high-gain antenna will preferentially radiate in a particular direction. Specifically, the antenna gain, or power gain of an antenna is defined as the ratio of the intensity power per unit surface radiated by the antenna in the direction of its maximum output, at an arbitrary distance, divided by the intensity radiated at the same distance by a hypothetical isotropic antenna.

The gain of an antenna is a passive phenomenon - power is not added by the antenna, but simply redistributed to provide more radiated power in a certain direction than would be transmitted by an isotropic antenna. An antenna designer must take into account the application for the antenna when determining the gain.

High-gain antennas have the advantage of longer range and better signal quality, but must be aimed carefully in a particular direction. Low-gain antennas have shorter range, but the orientation of the antenna is relatively inconsequential. For example, a dish antenna on a spacecraft is a high-gain device that must be pointed at the planet to be effective, whereas a typical Wi-Fi antenna in a laptop computer is low-gain, and as long as the base station is within range, the antenna can be in any orientation in space.

It makes sense to improve horizontal range at the expense of reception above or below the antenna. Aug 29, Sep 18, By Iqbal Khan 2, views.

The range of RBS models gives oper. The authors describe the requirements underlying RBS , its technical design and characteristics.

Commissioning procedure makes it unnec- essary to. Open navigation menu. Close suggestions Search Search. User Settings. Skip carousel. Carousel Previous. Carousel Next. What is Scribd? Explore Ebooks. Bestsellers Editors' Picks All Ebooks. Explore Audiobooks. Bestsellers Editors' Picks All audiobooks. Explore Magazines. Editors' Picks All magazines. Explore Podcasts All podcasts. Difficulty Beginner Intermediate Advanced. Explore Documents.

Ericsson Bts Installation and Commissioning. Take the two cable glands off and thread your DC input cable through the glands. Replace the cable glands with the DC input cable routed through them.

Insert the DC input cable to the screw terminals and tighten them to 6 Nm with an Allen key Tighten the cable glands. Replace the DC screw terminal cover. Re-insert the module core and fix the screws. Remove the dummy unit as follows: a Remove the side flange. Insert the extension sub-module. Fix the middle flange back in place between the extension sub-module and the remaining dummy unit. Fix the side flange back in place. Remove the dummy unit as follows: a Remove the side flanges on each side of the FSMx core.

Insert the extension sub-modules. Fix the middle flange back in place between the extension sub-modules. Fix the side flanges back in place on each side of the FSMx core.

Tighten the screws to 2. Anchor the plinth on the floor with four anchoring bolts, 12 mm 0. The plinth must be fixed to the floor to meet the Earthquake Zone 4 requirement. Next, ground the plinth to the site main ground.

Align the holes on the first module bottom with the fixing studs on the plinth. Line up the locating marks on the side of the module to help aligning the holes with fixing studs. Align the module markings and push the module back until it stops.

Attach the module to the plinth with two screws. Connect the module grounding cable between the module front panel and the plinth. Route the cable through an external cable entry. Align the holes on the second module bottom with the fixing studs on the first module. Push the module back until it stops. Attach the modules to each other with two screws. Repeat the steps for each subsequent module. Installation example: modules on the floor An example of the basic configuration of one System Module and three RF Modules installed on the floor.

If installing additional plinths one upon the other, the distance between the upper mounting screw holes in first and second plinth must be mm A Flexi Multiradio 10 BTS can only be installed as a right-hand installation due to optical cable routing reasons. Take this into account when installing the plinth. Mark the mounting screw locations on the wall and drill the holes for the screws.

Fix the upper mounting screws to the wall, lift the plinth on the wall and fit it to the mounting screws. Check that the plinth is level. Tighten the upper mounting screws. Insert the lower mounting screws.

Tighten the lower mounting screws. Make sure that the plinth is not twisted. If you are installing more than one plinth, repeat steps for each plinth. Note that the required space between the plinths is mm. To meet the earthquake requirement Telcordia GRCORE and the vibrational requirements for Earthquake Zone 4, the four module fixing screws between the module core and the module casing must be tightened to 5 Nm factory default is 2.

Mounting the modules to the wall When you attach the module casing to the plinth with two screws, secure the screws with a thread-locking compound in pole and wall installations. Use non-permanent thread-locking compound of medium strength for example Loctite or equivalent. Align the holes on the first module's bottom with the fixing studs on the plinth. Attach the module casing to the plinth with two screws.

Align the holes on the second module's bottom with the fixing studs on the first module. Attach the module casings to each other with two screws. FPKA is designed for poles between 60 mm 2. FPKA has room for four 3U modules. The modules can be installed on the opposite sides of FPKA. Fix the upper mounting bracket on the pole and tighten the mounting bracket screws M10 to 30 Nm.

Fix one side of the lower pole mounting bracket on the plinth with the mounting screws M8. Tighten the screws to 20 Nm. Lift the plinth on the pole and fit it to the pole mounting bracket's mounting screws. Tighten the screws M8 to 20 Nm. Fix the lower mounting bracket on the pole and tighten the mounting bracket screws M10 to 30 Nm.

Make sure that the pole mounting brackets are aligned and the plinth is not twisted. If a second plinth is required, install it on the other side of the pole mounting bracket if there is enough space.

Secure the screws with a thread-locking compound in pole and wall installations. Incorrect installation may lead to damage to the modules. The modules must be installed with the front panels facing left or right. Do not install the modules with the front panels facing up or down. Excess torsion damages the casings. In wall and pole installations, do not install more than two modules per plinth.

Attach the module casing to the plinth with screws and spring washers. Attach the module casings to each other with screws and spring washers.

Connect the grounding cable to the grounding point on the module front panel. There is a factory-installed M5 screw on one of the System Module grounding points. Connect the other end of the cable to the grounding point on the plinth. Repeat steps for each module in your configuration. Fix the excess cables to the sides of the casings with cable ties. Remove the dummy panel in the middle. Leave the other dummy panel in place if you are not installing any other optional sub-modules.

Insert the capacity extension sub-module into the free slot. Remove the top dummy panel. Insert the capacity extension sub-module into the upper slot. See Mounting the plinth on a wall for plinth installation instructions. Flexi Multiradio 10 BTS can only be installed as a right-hand installation because of optical cable routing reasons.

Remove the two fixing studs from the front of the plinth or topmost casing. Remove the two screws at the bottom at the back of the casing. Fix the two plinth brackets at the back of the casing. Align the plinth brackets with the remaining two fixing studs on the plinth and slide the module in place. Fix the plinth bracket screws. Check final steps on last graphic.

At the front, fix the casing to the plinth or casing with screws. Make sure a grounding cable is connected between the module front panel and plinth. It is designed to improve performance and is particularly useful for transmitting small amounts of payload data, such as VOIP, where the amount of payload may be smaller than the header. Third and fourth generation wireless systems are being designed to support a wide range of services, including audio and video applications. One major problem with the IP based protocol architectures is the large overhead, which affects the limited bandwidth of wireless channels.

A low bit rate speech application can result in IP packets with a ratio of 30 bytes of payload to 60 bytes of overhead. To quote from RFC,Bandwidth is the most costly resource in cellular links. Processing power is very cheap in comparison. Implementation or computational simplicity of a header compression scheme is therefore of less importance than its compression ratio and robustness. The overall reduction depends heavily on the size of the payload. The saving in overhead varies depending on the traffic models used.

With that approach, advertised user service peak rates up to the cell peak rate can be momentarily supported in one cell. The advertised user service rate will be, however, only a fraction of the cell peak rate. This also means that multiple users can be supported with that rate simultaneously. Sayed Qaisar Shah.

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