03.12.2020

Category: Rru and bbu

Rru and bbu

Wireless mobile communication technology uses various standards and protocols to transmit data between a base transceiver station BTS and a wireless mobile device. Some wireless devices communicate using an orthogonal frequency-division multiplexing OFDM digital modulation scheme via a physical layer.

Features and advantages of the disclosure will be apparent from the detailed description which follows, taken in conjunction with the accompanying drawings, which together illustrate, by way of example, features of the disclosure; and, wherein:. Reference will now be made to the exemplary embodiments illustrated, and specific language will be used herein to describe the same.

It will nevertheless be understood that no limitation of the scope of the invention is thereby intended. Before the present invention is disclosed and described, it is to be understood that this invention is not limited to the particular structures, process steps, or materials disclosed herein, but is extended to equivalents thereof as would be recognized by those ordinarily skilled in the relevant arts.

It should also be understood that terminology employed herein is used for the purpose of describing particular examples only and is not intended to be limiting. The same reference numerals in different drawings represent the same element. Numbers provided in flow charts and processes are provided for clarity in illustrating steps and operations and do not necessarily indicate a particular order or sequence.

An initial overview of technology embodiments is provided below and then specific technology embodiments are described in further detail later. This initial summary is intended to aid readers in understanding the technology more quickly but is not intended to identify key features or essential features of the technology nor is it intended to limit the scope of the claimed subject matter.

For example, the BBU can provide the radio functions of the digital baseband domain, and the RRU can provide the analog radio frequency functions. The BBU and the RRU can communicate with each other via a physical transport network, such as an optical transport network. The fiber of the physical transport network between the RRUs and BBUs may carry a large amount of baseband sampling data in real time.

A C-RAN re-architecture can be used to reduce the data rate by reducing the digital processing at the BBU, which can reduce the baseband sampling data transmitted over the physical transport network. In the C-RAN re-architecture, part of the baseband processing can be moved to the RRU to reduce the amount of data transmitted over the physical transport network. A wireless communication system can be subdivided into various sections referred to as layers.

The physical layer can include the basic hardware transmission components of a wireless communication system, as illustrated in FIG. In downlink channel processing, a base transceiver station BTS can include media access control MAC and physical PHY layer processing elements, such as a MAC layer processor, a channel coder, a channel interleaver, a channel modulator, a multiple-input multiple-output MIMO processor, a transmit power controller, a frame and slot signal generator, an inverse fast Fourier transform IFFT modulator, a cyclic prefix CP adder, a channel filter, a digital-to- analog converter DACan up converter, a gain controller, a carrier multiplexer, a power amplifier and limiter, a radio frequency RF filter, and one or more transmit antennas.

The BBU can provide radio base station control and management In another example, the BBU can include backhaul transport processing; MAC layer processing; channel coding, interleaving, and modulation ; MIMO processing ; transmit power control of each physical channel ; frame and slot signal generation ; IFFT modulation; and adding CP In uplink channel processing, the BTS can include MAC and PHY layer processing elements, such as one or more receive antennas, an RF filter, a low noise amplifier, a carrier demultiplexer, an automatic gain controller, a down converter, an analog-to-digital converter ADCa CP remover, a fast Fourier transform FFT demodulator, a transmit power control and feedback information detector, a signal distribution and signal processor, a MIMO detector, a channel de-modulator, a channel de-interleaver, a channel decoder, and a MAC layer processor.

The BBU can include CP removal ; FFT demodulation; transmit power control and feedback information detection ; signal distribution to signal processing units ; MIMO detection ; channel decoding, de-interleaving, and de-modulation ; MAC layer processing; and backhaul transport processing. The RRU can be configured to. The general interface e. The purpose and components of a C-RAN are briefly reviewed. The proliferation of the mobile broadband internet has increased the mobile internet traffic and the load on the BTS and the core network in the RAN.

In addition, the typical RAN can be limited by interference, so improving spectrum capacity can be limited. Centralized signal processing can greatly reduce the number of site equipment rooms needed to cover the same area as a traditional RAN.This site uses cookies.

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EP2761972A1 - Remote radio unit (rru) and base band unit (bbu) - Google Patents

Featured Answers. Recommended answer. The two parts are connected through optical fibers. The RS can be installed in a proper position in the equipment room, and the RRU is installed at the antenna end. In this way, a part of the previous base station module is separated. One RS can be connected to several RRUs, which saves space, reduces the setting cost, and improves networking efficiency.

At the same time, the interface between the two is connected by using an optical fiber, which reduces loss. Distributed base stations are widely used in 3G networks.

View more. All Answers. Our engineers are looking for answers to your questions. Berakia Created Jun 24, Helpful 0 Helpful 0. Hi there! The BBU is responsible for communication through the physical interface. Hi user! Useful document.

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Traditional base stations are decentralized and have relatively low capacity and latency requirements.

rru and bbu

Although there are many scenarios were traditional base stations are desirable, operators are looking at ways to reduce costs and optimize performance. The use of C-RAN Fronthaul has allowed operators the centralization of all high layer processing functions.

This capability of C-RAN networks is achieved by using high capacity and low latency transport networks. CPRI transports digitized time domain IQ data with data rates dependent on the number of antenna ports. The figure shows deployments for 2 to 8 antenna ports more common for 4G deployments for multiple base station channel sizes. It is anticipated that the deployment of massive MIMO for 5G networks will require in many cases up to or more antenna ports using larger channels.

A comparison of both scenarios shows that CPRI does not scale well for 5G deployments with multiple antennas and wide channels. This redesign of the BBU functionality is motivated to facilitate RAN virtualization and reduce fronthaul capacity and latency requirements. This redesign allows to categorize transport based on the different capabilities of different base station functional splits For more on functional split see 3GPP TR The main drivers for this new RAN design are to reduce the fronthaul capacity requirements, and meet latency demands.

This new architecture also makes virtualization easier and allows for a 1 to N relationship between the CU and DU. The lower the split point towards 8 the higher the requirements to transport network and the more difficult to virtualize the CU.

Also, lower splits also have more coordination and centralization capabilities and more cost-effective DU. Figure 4 shows an example of the possible capacity requirements for the assumptions shown in table 1 from 3GPP TR For this example, backhaul and midhaul have similar capacity requirements with greater differences between the fronthaul options 6 andand It is significant that midhaul and backhaul do not support centralization functions making fronthaul options the transport choice for advanced features such as CA and CoMP.

The new 5G RAN provides more transport flexibility and allows different base station functional splits. The definition and scoping of functional splitting is evolving rapidly and we should pay close attention to this as it should form the basis of transport systems for the 5G networks of the future. What to look for in a microwave radios and accessories online store.A baseband unit BBU is a device that interprets baseband frequencies in telecom systems including computer networks, the internet, phone networks and radio broadcasting systems.

A baseband frequency is a transmission at its original frequencybefore it has been altered or modulated, and it usually has a frequency range close to zero. Mechanical engineers and telecom professionals use BBU devices to improve the connection between communication equipment.

BBUs are manufactured with a modular design that allows them to perform multiple functions and fit easily into standard physical equipment. When data is passed from various points through a network to its end target, the BBU acts as a switchboard that connects the data to multiple locations for instance, a Mobile Telephone Switching Office. Once a wireless signal is connected, it can be translated into information that is usable by an application or end user.

Typically, a BBU connects to a remote radio unit RRU or remote radio head RRHboth of which are types of transceivers that facilitate wireless or wired connections with a radio station or other endpoint. These are sometimes also referred to as lowpass frequencies. BBU devices are small and easy to incorporate into server rooms, business centers or any central location that allows them to act as a midpoint. Additionally, BBUs have low power consumption and are simple to deploy.

This allows them to be easily implemented, replaced or updated within a telecom system. It is then responsible for communicating through a physical interface.

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Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings. Access control is a security technique that regulates who or what can view or use resources in a computing environment.

Telemedicine is the remote delivery of healthcare services, such as health assessments or consultations, over the Project Nightingale is a controversial partnership between Google and Ascension, the second largest health system in the United Disaster recovery as a service DRaaS is the replication and hosting of physical or virtual servers by a third party to provide Cloud disaster recovery cloud DR is a combination of strategies and services intended to back up data, applications and other A storage area network SAN is a dedicated high-speed network or subnetwork that interconnects and presents shared pools of A Fibre Channel switch is a networking device that is compatible with the Fibre Channel FC protocol and designed for use in a Characteristics of baseband units BBU devices are small and easy to incorporate into server rooms, business centers or any central location that allows them to act as a midpoint.

Related Terms configuration Generally, a configuration is the arrangement - or the process of making the arrangement - of the parts that make up a whole.

Login Forgot your password? Forgot your password?Technology evolves at a rapid-fire pace. Baseband refers to the original frequency range of a transmission signal before it is modulated.

Baseband can also refer to a type of data transmission in which digital or analog data is sent over a single non- multiplexed channel. A baseband unit BBU is a unit that processes baseband in telecomm systems. A typical wireless telecom station consists of the baseband processing unit and the RF processing unit remote radio unit - RRU. The baseband unit is placed in the equipment room and connected with RRU via optical fiber. The BBU is responsible for communication through the physical interface.

A BBU has the following characteristics: modular design, small size, low power consumption and can be easily deployed. A BBU in a cellular telephone cell site is comprised of a digital signal processor to process forward voice signals for transmission to a mobile unit and to process reverse voice signals received from the mobile unit.

The digital signal processor also serves to produce a first supervisory audio tone SAT for transmission to the mobile unit by generating successive digital SAT samples which are decoded into a continuous tone.

Finally, the digital signal processor detects the presence of a second SAT generated by the mobile unit by sampling and processing successive samples of the second SAT and measuring the power.

Home Resources Glossary Baseband Unit. Glossary Technology evolves at a rapid-fire pace. Baseband Unit Return to glossary. Let's stay in touch!

Huawei RRU3268 Installation Manual

Get the latest network test, monitoring and analytics news!Quick Links. Table of Contents. Indoor centralized rack icr dual-mode base station pages.

rru and bbu

Page 2 Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope.

Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" Product Versions The following table lists the product versions related to this document.

rru and bbu

Page 4 Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. A minimum of one item or a maximum of all items can be selected.

rru and bbu

Page 6 Press the primary mouse button twice continuously and quickly without moving the pointer. Drag Press and hold the primary mouse button and move the pointer to a certain position. Compared with issue 09this issue includes the following change Compared with issue 07this issue does not include any new information and no information is deleted from this issue.

Compared with issue 01this issue does not include any new information and no information is deleted from this issue. Page Installation Preparations 2. Before performing any operation, onsite personnel must be familiar with correct operation methods and safety precautions. Page Reference Documents You must prepare the following tools and instruments before the installation. Page Skills And Requirements For Onsite Personnel Before the installation, pay attention to the following items: The customer's technical engineers must be trained by Huawei and be familiar with the proper installation and operation methods.

The number of onsite personnel depends on the engineering schedule and installation environment. Page Information About The Installation 3. NOTE The actual label and nameplate may differ from what is shown in the figure. An RRU has a bottom panel, cabling cavity panel, and indicator panel. Figure shows the ports on the RRU panels.

Page Rru Indicators 1s and off for 1s caused by the faults on the related boards or ports. Therefore, you need to locate the fault before deciding whether to replace the module.

Page Installation Scenarios 3. Installation scenarios must meet heat-dissipation and waterproofing requirements of the RRU. Page 23 one side instead of the rear of an RRU is mounted on the support is recommended for RRUs on the main pole secured on a tower. Page 25 Figure shows a single RRU installed on a pole.

Page 26 U-steel specifications. Figure shows an RRU installed on U-steel. Figure shows an RRU installed on angle steel.I don't have any subscription to cable or satellite TV, as it seems like a waste of money when I can watch sports in a bar or at a friend's house instead. But what I didn't realise is that betting sites also offer live streaming of some sports events, with a few terms and conditions attached.

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RRU Installation RRU \u0026 Antenna connection illustration RRU power grounding fibre cable termination

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How is RRU connected to BBU?

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