16,105 research outputs found

    Case Study: Ethernet Cell Site Backhaul Request for Quotation Process

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    The use of wireless smart devices is growing rapidly and the average user requires more bandwidth than ever. The combination of these two issues places a heavy burden on the wireless operators’ ability to support their customers. To resolve this challenge, the wireless operators are launching the fourth generation (4G) Long-Term Evolution (LTE) mobile network. However, the current backhaul network on Time Division Multiplexing (TDM) T1s does not have the scalability, flexibility, or cost effectiveness to support 4G LTE. Ethernet backhaul, on the other hand, possesses all three of these features, which allows it to support 4G LTE. Though it has many benefits, Ethernet backhaul does have some drawbacks; it does not have an established pricing structure and lacks universal technical standardization. Because of these unknown factors, wireless operators are at risk. By issuing a Request for Quotation (RFQ), the wireless operators will be able to address pricing and standardization concerns of Ethernet backhaul. Through careful evaluation, results from the RFQ will help the wireless operators select the Ethernet backhaul solutions with the right pricing structure from the access providers

    Wireless Cellular Technologies and Convergence

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    Mobile communication technologies have gone through with several innovative improvements by developing various multiple-access procedures like TDMA, FDMA, CDMA, WCDMA, EDGE etc., which are used for wireless communication. But a big challenge is to select the right technology for the applications. Common wireless technologies are using radio waves. With radio waves distances can be short, such as a few meters for television or thousands or even millions of kilometres for deep-space radio communications. Wireless communications also use other electromagnetic wireless technologies, such as light, magnetic or electric fields or sound. Mobile wireless technologies have experienced 4 or 5 generations of technology revolution and evolution in the past few decades, namely from 1G to 4G. Current research in mobile wireless technologies concentrates on high level implementation of 4G technology and 5G technology. The architecture of future 5G systems, their performance, and mobile services are requiring to be clearly define. Expectations we can set for 5G technology are, the convergence of maximum of current mobile communication networks with other complementary radio access technologies. As a result, 5G technology will not be a single radio access interface but rather a ??network of networks??

    A CASE STUDY OF VARIOUS WIRELESS NETWORK SIMULATION TOOLS

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    4G is the fastest developing system in the history of mobile communication networks. Network connectivity is paramount for all kinds of big enterprises.  4G not only provides super-fast connectivity to millions of users, but can also act as an enterprise network connectivity enabler and it has inherent advantages such as higher bandwidth, low latency, higher spectrum efficiency along with backward compatibility and future proofing. The design of the 4G based Long Term Evolution physical network provides the required flexibility for optimization during the development phase. In this paper LTE Network related supporting simulation tools is presented to demonstrate the need of Hardware co-simulation of the LTE system. After the feasibility analysis, the importance of the model is to be ported Field Programmable Gate Array platform is examined in survey in detail with the supporting inferences along with the comparison of different wireless network simulators suitable for LTE

    Survey Paper: Mobility Management in Heterogeneous Wireless Networks

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    AbstractEver increasing user demands and development of modern communication technologies have led to the evolution of communication networks from 1st Generation (1G) network to 4G heterogeneous networks. Further, 4G with heterogeneous network environment will provide features such as, “Always Best Connected”, “Anytime Anywhere” and seamless communication. Due to diverse characteristics of heterogeneous networks such as bandwidth, latency, cost, coverage and Quality of Service (QoS) etc., there are several open and unsolved issues namely mobility management, network administration, security etc. Hence, Designing proficient mobility management to seamlessly integrate heterogeneous wireless networks with all-IP is the most challenging issue in 4G networks. Mobile IPv6 (MIPv6) developed by Internet Engineering Task Force (IETF) has mobility management for the packet-switched devices of homogeneous wireless networks. Further, mobility management of homogeneous networks depends on network related parameter i.e., Received Signal Strength (RSS). However the mobility management of heterogeneous networks, not only depends on network related parameters, but also on terminal-velocity, battery power, location information, user-user profile & preferences and service-service capabilities & QoS etc. Designing mobility management with all-IP, while, considering issues such as context of networks, terminal, user and services is the main concern of industry and researchers in the current era

    Handling Reject Cause on Roaming Network

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    A wireless multiple-access communications system may provide various types of wireless communication content such as voice, video, messaging, etc. The wireless multiple-access communications system may be a public land mobile network (PLMN). The PLMN may support various radio access technologies (RATs), for example, fourth generation (4G), such as Long-Term Evolution (LTE), LTE-Advanced (LTE-A) or LTE-A Pro system. The PLMN may also include network devices, such as a mobility management entity (MME), a serving gateway, a packet data network, etc. Each of these network devices may support communication for a communication device, which may be otherwise known as a user equipment (UE). The UE may be registered with a PLMN to receive the various types of wireless communication content. The UE may, in some examples, roam out of the PLMN and attempt to register with a roaming network (e.g., another PLMN) via a registration procedure (e.g., an attach procedure), to continue receiving the various types of wireless communication content

    5g new radio performance assessment

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    Abstract. Each decade, a new generation of wireless cellular technology presents a step-change in what cellular wireless systems can do compared to the previous generation. It is the beginning of new wireless technology in mobile phone networks called 5th Generation Mobile Phone Network (5G), a robust technology from its predecessors. 5G New Radio (5G NR) is the first step in adapting the 5G wireless technology to the existing cellular infrastructure. This thesis analyzes the 5G NR performance as part of the 5G test network (5GTN) deployed at the University of Oulu. The architecture of the 5GTN is a so-called non- standalone (NSA) network where the 4G Long-Term Evolution (4G-LTE) cellular network provides the control plane of the network. The performance of the 5G NR was obtained by measuring a few primary Key Performance Indicators (KPI) and data transmission measurements to observe the mobile network strength. This thesis first described the importance of 5G and its history, the deployment timeline, the basic architecture of adaption and synchronization process with the current mobile network, and future possibilities. After that, the main KPI parameters, deployed software, and the test case environment are described, and the 5GTN architecture is also covered. Later, the test results are presented, and lastly, a brief discussion of the outcome of the test result is provided. Finally, a comparison between the 5G NR BTS cells within the test environment network is provided. Performance measurements have been performed at the Linnanmaa campus of the University of Oulu and the surrounding premises under the 5GTN, the broadest open- access test network of 5G. The test cases were created during the time of field testing. The measurement key performance indicators (KPIs) have been carefully chosen for these test case scenarios, where the recorded result’s output were analyzed and represented clearly through this study. Data throughput tests have been performed parallelly during the field testing within the network to assess the 5G performance in terms of data rate. Along with the KPI parameter and throughput tests, there is a clear indication that 5G NR offers the fastest connection as part of the existing mobile network infrastructure

    Mobile Broadband Possibilities considering the Arrival of IEEE 802.16m & LTE with an Emphasis on South Asia

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    This paper intends to look deeper into finding an ideal mobile broadband solution. Special stress has been put in the South Asian region through some comparative analysis. Proving their competency in numerous aspects, WiMAX and LTE already have already made a strong position in telecommunication industry. Both WiMAX and LTE are 4G technologies designed to move data rather than voice having IP networks based on OFDM technology. So, they aren't like typical technological rivals as of GSM and CDMA. But still a gesture of hostility seems to outburst long before the stable commercial launch of LTE. In this paper various aspects of WiMAX and LTE for deployment have been analyzed. Again, we tried to make every possible consideration with respect to south Asia i.e. how mass people of this region may be benefited. As a result, it might be regarded as a good source in case of making major BWA deployment decisions in this region. Besides these, it also opens the path for further research and in depth thinking in this issue.Comment: IEEE Publication format, ISSN 1947 5500, http://sites.google.com/site/ijcsis

    Performance evaluation of 5G millimeter-wave cellular access networks using a capacity-based network deployment tool

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    The next fifth generation (5G) of wireless communication networks comes with a set of new features to satisfy the demand of data-intensive applications: millimeter-wave frequencies, massive antenna arrays, beamforming, dense cells, and so forth. In this paper, we investigate the use of beamforming techniques through various architectures and evaluate the performance of 5G wireless access networks, using a capacity-based network deployment tool. This tool is proposed and applied to a realistic area in Ghent, Belgium, to simulate realistic 5G networks that respond to the instantaneous bit rate required by the active users. The results show that, with beamforming, 5G networks require almost 15% more base stations and 4 times less power to provide more capacity to the users and the same coverage performances, in comparison with the 4G reference network. Moreover, they are 3 times more energy efficient than the 4G network and the hybrid beamforming architecture appears to be a suitable architecture for beamforming to be considered when designing a 5G cellular network
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