BROWSING: TDD

Airtel, Nokia achieve 300 Mbps upload speed in 5G trial

Airtel said that the trial was conducted at its tech lab and achieved uplink speeds of 300 Mbps Airtel, MediaTek and Nokia announced the successful completion of trials combining Time Division Duplex (TDD) and Frequency Division Duplex (FDD) mid-band spectrum on a time basis utilizing...

Qatar regulator urges mobile carriers to switch to TDD

The argument is that TDD technique will improve the performance of mobile networks in Qatar Qatar’s Communications Regulatory Authority (CRA) has ordered local mobile operators Ooredoo Qatar and Vodafone Qatar to switch to high-speed Time Division Duplex (TDD) technique in the 2.6 GHz frequency band,...

Why timing and synchronization has evolved in telecom networks

Telecommunication networks are fundamentally about sending and receiving signals accurately. In order for the network to accurately juggle the complex transmission and reception of data from many devices in various locations, accurate timing and synchronization is absolutely crucial. When timing and sync is off,...

Qualcomm, Samsung achieve 1024 QAM in FDD and TDD bands

Use of advanced modulation is a first for FDD, partners say Samsung Networks and Qualcomm have used advanced modulation as defined in 3GPP Release 17 to boost downlink speeds by about 20% compared to the use of 256 QAM. The lab test, conducts at Samsung's research...

Ericsson, MediaTek showcase RedCap interoperability for 5G SA

The interoperability development testing (IoDT) took place at an Ericsson lab in Sweden Ericsson has teamed up with chipset maker MediaTek to perform 5G Reduced Capability (RedCap) data and 5G voice calls on both frequency division duplex (FDD) and time division duplex (TDD) spectrum bands,...

Why is timing and synchronization so important in 5G networks?

5G's advanced capabilities require a higher level of network performance expectations, from latency to the radio frequency environment. One aspect of where requirements are tightening up is in timing and synchronization. In part, this is because the "goldilocks" midband spectrum that is prized for...

Ericsson, MediaTek expand 5G aggregation deployment options

Ericsson said the downlink peak rate of nearly 4.4 Gbps was reached by combining 20 megahertz of AWS, 80 megahertz of CBRS and 200 megahertz of C-band Ericsson and MediaTek said they have successfully merged four channels – one FDD and three TDD – to...

O2 Telefónica achieves carrier aggregation breakthrough

The carrier aggregation trial was supported by Nokia and MediaTek At O2 Telefónica's Innovation Cluster near Berlin, the carrier has successfully aggregated sub-6 GHz spectrum frequencies in a two-component carrier uplink Carrier Aggregation (CA) trial on 5G Standalone. The trial, which was supported by Nokia and MediaTek,...

Huawei calls for cross-industry efforts to boost ‘5.5G’ technology

Huawei said that a total of 230 carriers around the world have already launched commercial 5G services BANGKOK, THAILAND- Huawei rotating chairman Ken Hu called for a cross-industry effort with the aim of pushing so-called "5.5G" technology, which will enable advanced services and applications for...

Optus claims first four component CA 5G SA data call in Australia

The 4CC data trial combined Optus’ low-band spectrum and 2,100MHz FDD bands with 2,300MHz and 3,500MHz TDD bands Australian operator Optus has completed what it claims to be the first four component carrier aggregation 5G standalone data call in the country. To achieve this milestone, Optus...

Ericsson expects nearly 40 SA 5G networks globally by end-2022

Ericsson said that more than 20 5G SA networks were already operational globally by the end of 2021 The number of 5G Standalone (SA) networks at a global level could reach nearly 40 at the end of 2022, according to the latest edition of the...

GSA: Planned 5G devices reach 1,334 globally at end-Q1

GSA said that nearly 1,000 of these 5G devices are commercially available The global number of 5G devices that have been announced rose by 3.2% in March 2022 to 1,334 devices, according to a recent report by the Global mobile Suppliers Association (GSA). “Of these,...

Ericsson provides Carrier Aggregation to Zain Bahrain’s 5G network

Zain Bahrain exec: 'Carrier Aggregation is the foundation for deploying high-performing 4G and 5G networks' As part of its ongoing 4G/5G partnership with Ericsson, Zain Bahrain has implemented the vendor’s 5G Time Division Duplex (TDD/TDD) Carrier Aggregation (CA) on a commercial device to use on...

China Mobile and partners achieve new carrier aggregation record

The trial combined three component carriers across 5G FDD spectrum (30MHz of 700MHz/n28) and 5G TDD spectrum (100+60MHz of 2.6GHz/n41) China Mobile, with partners Nokia and MediaTek, has claimed verification of the world's first 3 Components (3CC) Carrier Aggregation (CA) technology in a test...

China Unicom and Huawei launch 1,000 5G ‘Super Uplink’ sites in Beijing

China Unicom first tested Huawei's 5G Super Uplink on its commercial networks in 2020 China Unicom and Huawei announced last week that they have deployed Huawei's 5G Super Uplink at more than 1,000 5G commercial sites in Beijing. The deployment, which was carried out over...

VIAVI Webinar: Learn how to overcome the challenges of deploying 5G services in in the C-band spectrum

Midband (or C-band) is considered the “waterfront property” of RF spectrum for 5G. It offers the best compromise between RF coverage and RF bandwidth, and with 100 MHz of bandwidth, C-band can truly enable the highly hyped enhanced mobile broadband (eMBB) use cases. Yet,...

Understanding FDD/TDD carrier aggregation for 5G

In general, FDD is considered better for coverage and TDD better for capacity Mobile operators are looking to carrier aggregation (CA), which allows them to use multiple sub-6 GHz spectrum channels simultaneously, as a method of increasing the bandwidth and speeds of their 5G networks....

Why ultra-low 5G latencies are not assured, and Europe is worst placed

The physics of time-division duplexing in radio communications means 5G could, in certain frequency bands, struggle to achieve the ultra low latencies it promises. Worse, in some markets, regulatory forces have compounded the challenge with backwards rules about 5G radio operations. As a consequence, radio...

Seven-carrier deployment in new Kuala Lumpur metro system blends FDD, TDD MIMO

  Sunwave CrossFire Digital DAS Platform Takes on the Challenging Malaysian Deployment Transit infrastructure, particularly rail systems, are notoriously difficult to connect to cellular networks given the varying mobility conditions, need for underground penetration, as well as the fluctuating capacity demands of both the transport authority...

Analyst Angle: What spectrum bands will US operators use for Mobile 5G?

  Although much of the dialogue on 5G spectrum in the US has focused on millimeter (mmWave) spectrum, it is not clear whether the mmWave spectrum is suitable for mobile network deployment in the near to mid-term future. This is exactly why Verizon is concentrating on...

LTE TDD Performance Measurement with 3.5 GHz Band

This paper addresses LTE radio performance in the 3.5 GHz band and how it compares with TDD band 40 (2300-2400 MHz). Experiments have been carried out for throughput Range versus Rate, CQI variation, MCS distribution, and SINR on different path loss. Based on these...

Analyst Angle: 2016 macrocell digital baseband unit shipments increase 13% year-on-year

EJL Wireless Research estimates that macrocell digital baseband unit (BBU) shipments increased by 13% in 2016 as compared with shipment levels in 2015. While Huawei Technologies maintained its market leadership position in 2016, we note that Nokia outperformed the overall market and increased market...

Digital Greenwich to host 5G smart city incubator with 5GIC

The University of Surrey’s 5G Innovation Centre (5GIC) and Digital Greenwich have partnered to co-create and trial new 5G smart city technology. The University of Surrey’s 5G Innovation Centre (5GIC), one of Europe’s largest research centre dedicated to 5G, has partnered with the Royal Borough...

Swisscom launches LTE-A combining FDD and TDD

The telco ended Q2 with 6.57M mobile subscribers in Switzerland Swiss mobile telephony operator Swisscom has launched a new mobile service combining the FDD and TDD LTE standards. The technology, which is currently available at the company’s Füssli shop in Zurich, will be commercially available...