Carrier aggregation LTE
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Carrier aggregation in LTE-Advanced can increase bandwidth and bitrate by aggregating multiple component carriers. Each component carrier can have bandwidth of 1.4-20 MHz, and up to 5 carriers can be aggregated for a total of 100 MHz. Carrier aggregation supports both intra-band aggregation within the same frequency band and inter-band aggregation across different bands. Scheduling in carrier aggregation can occur either on the same carrier or across different carriers.
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What is lte ca carrier aggregation tutorial
This document provides a tutorial on carrier aggregation (CA) in 4G LTE Advanced networks. It explains that CA allows multiple LTE carriers to be aggregated to provide higher data rates required for LTE Advanced by effectively increasing transmission bandwidth. There are different types of CA including intra-band using adjacent or non-adjacent carriers within a band, and inter-band using different frequency bands. CA supports bandwidths up to 100MHz and is defined for various bandwidth classes.
Carrier Aggregation in LTE-Advanced
Carrier aggregation is a technique used in LTE-Advanced to bond together multiple component carriers to increase overall transmission bandwidth beyond 20MHz and achieve higher data rates up to 1Gbps. It allows aggregation of up to 5 carriers that may be contiguous or non-contiguous in the same or different bands. The component carriers can have varying bandwidths from 1.4MHz to 20MHz. Carrier aggregation provides flexibility to efficiently use fragmented spectrum and achieve very high throughput using wider transmission bandwidths. It requires changes to the physical, MAC and RRC layers for proper operation across multiple carriers.
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Carrier Aggregation in LTE-Advanced
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LTE is a common standard covering both FDD and TDD flavors, enableing the industry to build common FDD/TDD infrastructure, common devices, and a large common ecosystem. LTE and its evolution LTE Advanced play a critical role in addressing the 1000x increase in mobile data.
Qualcomm has been leading LTE proliferation from the very beginning— from the industry-first Gobi LTE/3G multimode, common FDD/TDD modems to the current third-generation solutions that powered the world’s first LTE Advanced carrier-aggregation launch in June 2013.
For more information please visit www.qualcomm.com/lte
Download the presentation here: http://www.qualcomm.com/media/documents/lte-qualcomm-leading-global-success
Architectural Options for Metro Carrier-Ethernet Network Buildout: Analysis &...
Architectural Options for Metro Carrier-Ethernet Network Buildout: Analysis &...Vishal Sharma, Ph.D.
This workshop is one of the first that we're aware of to give a detailed taxonomy & analysis of deployment options for Carrier Ethernet-based metro/access networks, in one place.
We elaborate each option addressing questions like: network architectures possible? Is other supporting technology needed? Or, is it standalone for the applications/services a provider might run, and so on. Qualcomm: Making the best use of unlicensed spectrum
In solving the 1000x challenge, licensed spectrum is the foundation. Equally important is utilizing available unlicensed spectrum. The best way to achieve this is to combine both of them through aggregation. Aggregation brings seamless user experience, better coverage and capacity, as well as the efficiencies of a common unified network. Operators have a choice on how to aggregate, and the decision depends on their current assets and future network plans.
Explore our this presentation and other resources to find out when, and how to choose? How can LTE-U coexist fairly with Wi-Fi in 5GHz unlicensed spectrum? What roles existing/new Wi-Fi, and LTE-U play? And whether it really is a "either or" decision.
Webpage: https://www.qualcomm.com/invention/technologies/1000x/spectrum/unlicensed
Download presentation: https://www.qualcomm.com/documents/making-best-use-unlicensed-spectrum-presentation
Sign up for our Technology Newsletter: https://www.qualcomm.com/invention/technologies/wireless/signup
Lte advanced conformance & standards
The document discusses LTE-Advanced conformance and standards. It provides an overview of the LTE conformance ecosystem including 3GPP specifications, validation of test platforms and cases, and certification by bodies like GCF and PTCRB. It then gives a status update on LTE-Advanced, describing features like carrier aggregation and their role in achieving IMT-Advanced requirements. Key aspects covered are 3GPP status, certification, and the use of carrier aggregation to deliver higher data rates up to 3 Gbps.
LTE direct in unlicensed spectrum
1. LTE in Unlicensed Spectrum
Supported Spectrum for Global Solution
Requirements Across the Regions in 5GHz Spectrum
2. Licensed-Assisted Access using LTE
Carrier Aggregation or Dual Connectivity
Releases 13 Draft Timeline
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Use cases for Proximity-based Services
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9 carrier aggregation lte-a new challenges for lab and field
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Carrier Aggregation - (one) key enabler for LTE-Advanced
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CA-Carrier Aggregation || LTRE Advance
Carrier aggregation allows combining multiple component carriers to increase bandwidth and throughput. The primary serving cell handles radio resource control and provides system information, while secondary serving cells provide additional bandwidth. Carrier aggregation can be intra-band contiguous, intra-band non-contiguous, or inter-band depending on whether the component carriers are within one band and contiguous or not. A maximum of 5 component carriers can be aggregated for a total bandwidth of 100MHz in LTE-Advanced.
LTE Air Interface
This document provides an overview of LTE air interface concepts including:
- Main LTE features such as frequency bands and mobility protocols.
- The LTE protocol stack including layers such as RRC, PDCP, RLC, MAC and physical.
- LTE channel types including logical, transport, and physical channels.
- Key physical channel functions like reference signals, synchronization signals, broadcast channels, and control channels.
- Uplink/downlink channel structures including time and frequency domain configurations.
02 channel concept
ell Allocation (CA) is the subset of the total frequency band that is available for one BTS. It can be viewed as the total transport resource available for traffic between the BTS and its attached MSs. One Radio Frequency CHannel (RFCH) of the CA is used to carry synchronization information and the Broadcast Control CHannel (BCCH). This can be any of the carriers in the cell and it is known as the BCCH carrier or the c
carrier. Strong efficiency and quality requirements have resulted in a
0
rather complex way of utilizing the frequency resource. This chapter describes the basic principles of how to use this resource from the physical resource itself to the information transport service offered by the BTS.
Carrier separation is 200 kHz, which provides: • 124 pairs of carriers in the GSM 900 band • 374 pairs of carriers in the GSM 1800 band • 299 pairs of carriers in the GSM 1900 band
Using Time Division Multiple Access (TDMA) each of these carriers is divided into eight Time Slots (TS). One TS on a TDMA frame is called a physical channel, i.e. on each duplex pair of carriers there are eight physical channels.
A variety of information is transmitted between the BTS and thMS. The information is grouped into different logical channelsEach logical channel is used for a specific purpose such as paging, call set-up and speech. For example, speech is sent on the logical channel Traffic CHannel (TCH). The logical channels are mapped onto the physical channels.
The information in this chapter does not include channels specific for GPRS (General Packet Radio Service). For basic information on GPRS see chapter 14 of this documentation.
Wcdma channels
This document discusses WCDMA channels at different levels including logical channels, transport channels, and physical channels. It provides details on:
- Logical channels describe the type of information transferred and include control and traffic channels.
- Transport channels describe how logical channels are transferred over the interface and include dedicated and common channels.
- Physical channels provide the transmission medium and are defined by specific codes. They include channels like DPDCH, DPCCH, PDSCH, PRACH, and CPICH.
- The document also discusses the radio frame structure in WCDMA and details on different physical channel types and their characteristics.
Lte mac
- The document discusses LTE physical channels, transport channels, and logical channels. It provides details on the different channels used in the downlink and uplink.
- The main physical channels described include the PBCH, PCFICH, PDCCH, PHICH, PUCCH, PUSCH, and PRACH. The transport channels include the BCH, DL-SCH, PCH, MCH, UL-SCH, and RACH. The logical channels include the BCCH, PCCH, CCCH, MCCH, DCCH, DTCH, and MTCH.
- Link adaptation procedures for the downlink and uplink are also summarized, including how CQI is used to determine the
05 a rrm ul dl scheduler
Engineer EMERSON EDUARDO RODRIGUES PRESENTA UNA NUEVA VERSION
THERE ONE NEW ONE PRESENTATION FOR 2G AND 3G ENGINEERING FOR LTE AND PSCORE ENGINEER
ITS VERY SUITABLE FOR YOUR RESEARCH AT ALL LEVELS OF RF ENGINEERING AND PS CS
Cellular network planning_and_optimization_part11
The document discusses HSDPA (High Speed Downlink Packet Access), a 3G mobile telecommunications standard that allows networks to have higher data transfer speeds and capacity. Key points:
- HSDPA was introduced in 2005 and allows peak data rates of 14.4 Mbps compared to 2 Mbps for standard WCDMA. It uses shared channel transmission, fast scheduling, adaptive modulation/coding, and HARQ.
- Planning HSDPA deployment requires analyzing existing network performance, dimensioning configurations, parameter planning, and performance monitoring. Critical aspects include carrier configuration, hardware capacity, transmission capacity, and coverage strategy.
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S0 p1 faisal_ghazaleh
Carrier aggregation was introduced in 3GPP Release 10 to allow LTE networks to achieve higher bandwidths. It permits combining multiple component carriers to create bandwidths of up to 100MHz. There are three types of carrier aggregation: intra-band contiguous, intra-band non-contiguous, and inter-band non-contiguous. Carrier aggregation improves spectrum efficiency and supports higher data rates, but requires enhancements to LTE specifications for signaling, scheduling, and uplink control channels to coordinate the multiple component carriers. Network testing solutions like TEMS Discovery from Ascom support decoding and analysis of traffic from UEs using three component carriers to help operators optimize carrier aggregation deployments.
Wcdma radio functionality
Admission control guarantees quality of service by controlling the number of users based on interference, capacity, load, and coverage. It selectively denies access requests to limit load. Congestion control resolves overload by delaying packets, removing calls, or moving users between channels. Power control aims to minimize transmit power while maintaining quality by adjusting power levels through inner-loop, outer-loop, and open-loop control. Soft/softer handover combines signals from multiple base stations or sectors to support user mobility and power control.
3G Huawei RAN Resource Monitoring and management.ppt
This document summarizes resources that need to be monitored in a Huawei WCDMA network to avoid congestion and blockages. It discusses monitoring nodeB and cell level resources like CE cards, licenses, OVSF codes, power levels, and Iub bandwidth. It also covers monitoring traffic, KPIs, service distributions and generating relationships between resources, traffic, and quality of service to determine if resources are sufficient. Counter examples are provided to monitor resource usage like TCP, ENU, OVSF code occupancy, and power levels.
GSM channels
Physical channels carry information over the air interface between the mobile station and base transceiver station. Logical channels map user data and signaling information onto physical channels. There are two main types of logical channels - traffic channels which carry call data, and control channels which communicate service information. Control channels include broadcast channels which transmit cell-wide information, common channels used for paging and access procedures, and dedicated channels for signaling during calls or when not on a call. Logical channels are mapped onto physical channels to effectively transmit information wirelessly between network components in a GSM system.
HSPA Essentials
Here you are an interesting explanation about HSPA Technology. The High Speed packet Access is the combination of two technologies, one of the downlink and the other for the uplink that can be built onto the existing 3G UMTS or W-CDMA technology to provide increased data transfer speeds.
The original 3G UMTS / W-CDMA standard provided a maximum download speed of 384 kbps.
WCDMA Air Interface
This presentation discusses about the WCDMA air Interface used in 3G i.e. UMTS. This Radio Interface has great capability on which Third Generation of Mobile Communication is built, with backward compatibility.
Physical Channel
The document describes the physical layer of WCDMA FDD mode, including:
1. An overview of the WCDMA physical layer specifications and documents.
2. Descriptions of transport channels (dedicated, common), physical channels, and the mapping between them.
3. Details on specific aspects of the physical layer such as spreading/modulation, multiplexing/channel coding, measurements, and procedures.
Overview and Basics of LTE
The document provides an overview of LTE (Long Term Evolution) Release 8. It discusses key requirements for LTE such as supporting high data rates, low latency, and an all-IP network. It describes the network architecture including components like eNodeB, MME, S-GW, and P-GW. It also covers functionality of these components and the protocol stack consisting of PDCP, RLC, MAC, and RRC layers. Mobility management, QoS, and comparisons to other technologies like HSPA+ and WiMAX are also summarized.
LTE Key Technologies
The document discusses key technologies in LTE including access techniques, MIMO, scheduling, link adaptation, and HARQ. It covers OFDM and SC-FDMA used for downlink and uplink access, benefits of MIMO including improved SINR and shared SINR through modes like transmit diversity, receive diversity, and spatial multiplexing. Scheduling considers factors like CQI and aims for fairness and throughput. Link adaptation uses CQI and MCS to optimize air interface efficiency. HARQ enables recovery of errors at the MAC layer through retransmissions.
Thesis Presentation on Renewal theory based 802.15.6 latest.pptx
The document discusses the IEEE 802.15.4 MAC protocol. It describes the protocol's operational modes including non-beacon enabled mode using unslotted CSMA/CA and beacon-enabled mode using slotted CSMA/CA. It also discusses the superframe structure used in beacon-enabled mode including the contention access period, contention free period, and optional inactive period. Finally, it summarizes a research paper that proposes a 3-level renewal process model to analyze the contention access period performance metrics like throughput and service time.
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1. The document describes RRC procedures in LTE, including important changes from 3G systems.
2. Key changes include a simplified two-state model, single shared transport channel, reduced signaling, and no cell update or URA update procedures.
3. Core RRC procedures like paging, connection establishment, and reconfiguration are explained along with differences from 3G.
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Long Term Evolution (LTE), the next generation of radio technologies designed to increase the capacity and speed of mobile networks. The future communication systems require much higher peak rate for the air interface but very short processing delay. This paper mainly focuses on to improve the processing speed and capability and decrease the processing delay of the downlink channels using the parallel processing technique. This paper proposes Parallel Processing Architecture for both transmitter and receiver for Downlink channels in 3GPP-LTE. The Processing steps include Scrambling, Modulation, Layer mapping, Precoding and Mapping to the REs in transmitter side. Similarly demapping from the REs, Decoding and Detection, Delayer mapping and Descrambling in Receiver side. Simulation is performed by using modelsim and Implementation is achieved using Plan Ahead tool and virtex 5 FPGA.Implemented results are discussed in terms of RTL design, FPGA editor, power estimation and resource estimation.
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- 1. LTE-Advance Carrier aggregation Benefits: - Increase bandwidth - Increase bitrate - can be used for both TDD/FDD Component carrier (CC): each aggregated carrier referred to as component carrier (CC). • Each CC can have bandwidth of 1.4, 3, 5, 10, 15 or 20 MHz • Maximum 5 CC with 20 MHz ca possible, total 100 MHz • UL/DL aggregated carriers can be different in FDD
- 2. Frequency Band Allocation: Intra-Band: if component carriers are in the same LTE Frequency band. • Contiguous Intra-Band: if component carriers (CC) are continuous frequency band in the same LTE frequency band. • Non-contiguous band: if frequency are in the same LTE Band but have gaps in between. Inter-band: if frequencies are from different LTE Bands. ATBC: Aggregated transmission bandwidth configuration. Total number of aggregated physical resource block (PRB). CA Bandwidth class: Indicates maximum number of Bandwidth and CC.
- 3. Class A: ATBC ≤ 100, maximum number of CC = 1 Class B: ATBC ≤ 100, maximum number of CC = 2 Class C: 100 < ATBC ≤ 200, maximum number of CC = 2 Operating principle: • In CA there are number of serving cells, one for each component carriers • Coverage of the CC may differ because of the frequency band used • RRC connection is only handled by one cell, the Primary serving cell, served by the Primary component carrier (DL and UL PCC) • In idle mode the UE listens to system information on the DL PCC • On the UL PCC PUCCH is sent • The other component carriers are all referred to as Secondary component carriers (DL and UL SCC) • SCCs are added and removed as required • PCC only changed in Handover
- 4. LTE Protocols on Radio interface: Carrier aggregation influences MAC and PHY layer protocols. Also new RRC massage introduced. Changes: • new RRC in order to handle SCC (secondary component carrier) • MAC to handle scheduling on number of CC s. • PHY layer: scheduling on CCs must be provided DL as well as HARQ ACK/NACK per CC must be delivered UL and DL
- 5. Scheduling: There are two main alternative for scheduling in CA. 1. Scheduling grant and resource on the same carriers 2. Cross- carriers scheduling: scheduling grant and resource not the same carrier. Reference: www.3gpp.org
- 6. Scheduling: There are two main alternative for scheduling in CA. 1. Scheduling grant and resource on the same carriers 2. Cross- carriers scheduling: scheduling grant and resource not the same carrier. Reference: www.3gpp.org