4G-LTE Technology

/4G-LTE Technology

Self-Organizing Network (SON)

2018-10-06T19:47:09+05:30

Self-Organizing Network (SON) Self-Organizing Network (SON) is a set of capabilities defined in the LTE standards to simplify the task of configuring and optimizing LTE networks. SON functions fall into three broad groups: Self-configuration enables network components like the Enb to determine key configuration parameters autonomously, identify changes to parameters as a result of network changes (e.g. Automatic Neighbor Relations (ANR)) and to automatically establish signaling interfaces to other network elements. Self-Optimization adjusts parameter settings based on feedback collected over time to fine-tune the transmission parameters to improve performance and reduce failures, and to dynamically manage interference by allowing cells to [...]

Self-Organizing Network (SON) 2018-10-06T19:47:09+05:30

An Indoor custom solution

2018-10-06T19:59:17+05:30

An Indoor custom solution Special custom solutions may be needed to provide good indoor coverage, high capacity and to reduce overall costs by reusing any existing infrastructure. An indoor custom solution is required to efficiently and effectively provide mobile broadband performance in a multi-story building, small cells can be deployed on different floors in the form of radio nodes. These radio nodes would be viewed as small remote radio heads. These radio nodes can be connected to an Ethernet network, which also connects to a service node. The service node controls radio resources of small cells of small cells and [...]

An Indoor custom solution 2018-10-06T19:59:17+05:30

Software-Defined Radio Approach

2018-10-06T20:12:14+05:30

Software-Defined Radio Approach In the Software-Defined Radio approach (SDR), signal processing is carried out in software at a general processor instead of special hardware. However, most likely digital to analog and analog to digital conversion and power amplification would be hardware based and thus not be implemented via SDR. RRUs (Remote Radio Units) and BBUs (Baseband Units) are based on Software Defined Radio technology for software-based capacity augmentation and enhancement. A remote Operations Support System (OSS) is typically in Software Defined Radios which is used to manage SDR and carry out upgrade functions. The main advantages are simplified BBU capacity augmentation [...]

Software-Defined Radio Approach 2018-10-06T20:12:14+05:30

Cloud RAN-Benefits & Challenges

2018-10-06T20:16:57+05:30

Cloud RAN-Benefits & Challenges About Cloud RAN Cloud-RAN combines the baseband processing for multiple sites into a baseband pool, allowing multiple cells to be controlled with fewer processing nodes and greatly reducing the amount of equipment at the cell site itself. Various Cloud RAN-benefits & challenges are also described here: Benefits of Cloud RAN The primary advantage of the C-RAN architecture is the overall reduction in CapEx and OpEx by consolidating and reducing the total amount of baseband equipment needed to handle a given number of cells; and reducing the equipment deployed at each cell site, which in turn reduces [...]

Cloud RAN-Benefits & Challenges 2018-10-06T20:16:57+05:30

Journey to Cloud-RAN

2018-10-06T20:21:51+05:30

Journey to Cloud RAN from 4G RAN(Radio Access Network) We are moving towards Cloud RAN from the traditional monolithic base station/Enb architecture. The current eNodeB architecture consists of radio unit and baseband hardware co-located in a cabinet or shelter at the cell site with the IP-enabled BBU (Baseband Unit) sending and receiving traffic to and from the EPC (Evolved Packet Core). The eNBs are deployed at the bottom of the tower with coax feeder cables carrying the RF signal up and down the tower. In an alternative decoupled architecture, the BBU hardware is located in a cabinet or shelter at [...]

Journey to Cloud-RAN 2018-10-06T20:21:51+05:30

4G RAN (Radio Access Network)

2018-10-06T19:15:24+05:30

4G RAN (Radio Access Network) There are two different architectures through which the RU (Radio Unit) and the BBU (Baseband Unit) are connected to each other in a 4G RAN (Radio Access Network). The traditional monolithic base station/ eNB architecture consists of radio unit and baseband hardware co-located in a cabinet or shelter at the cell site with the IP-enabled BBU sending and receiving traffic to and from the EPC. The eNBs are deployed at the bottom of the tower with coax feeder cables carrying the RF signal up and down the tower. The interface cabling between the RU and [...]

4G RAN (Radio Access Network) 2018-10-06T19:15:24+05:30

4G LTE Network Architecture

2018-10-06T20:27:48+05:30

4G LTE Network Architecture LTE, a 4G wireless technology which has been developed by 3GPP (Third Generation Partnership Project), an industry trade group. The 4G technology LTE that stands for Long Term Evolution has been named so because it represents an evolution from the very basic GSM technology (2G) to 3G standard (UMTS) and the next step comprises of LTE evolving from the third generation of wireless networks. In particular, the factors that led to the emergence of 4G technology are dedicated to the inefficiency of 3G network for supporting the demands of rapidly growing number of users and their expectations [...]

4G LTE Network Architecture 2018-10-06T20:27:48+05:30

LTE Broadcast

2018-10-06T20:37:40+05:30

LTE Broadcast One of the key technologies behind the LTE Broadcast is the Single Frequency Network. LTE Broadcast uses the same base stations and radio frequency spectrum as normal LTE transmissions, except that during the broadcast event, a certain portion of radio resources in the cells covering the service area are dedicated to the broadcast service for the duration of the event. The reserved timeslots are used to broadcast the event and the remaining timeslots are used for normal LTE unicast transmissions. During the reserved broadcast timeslots, all participating base stations transmits exactly the same signals at exactly the same [...]

LTE Broadcast 2018-10-06T20:37:40+05:30

Unicast Services in 4G LTE

2018-10-06T20:41:29+05:30

Unicast Services in 4G LTE Media from content servers to end-user devices can be transmitted by unicast services in 4G LTE or broadcast methods. Unicast is an efficient mechanism to deliver services that require a bidirectional link, such as real-time voice and video communication, web, email or social media. Users are spread out sparsely over disjoint multiple radio cells, consuming different content at different times, such as on-demand video streaming. When multiple users are watching the same content, such content is transmitted multiple times within the transport network and on the radio interface, leading to very low efficiency. For interesting [...]

Unicast Services in 4G LTE 2018-10-06T20:41:29+05:30

Dual Connectivity in 4G

2018-10-06T20:44:50+05:30

Dual Connectivity in 4G In dual connectivity in 4G LTE, the UE is provided resources from a master and secondary eNodeB. In dual connectivity, the UE is provided radio bearers from the two eNodeBs where packets transmission is scheduled by two distinct schedulers at the two eNodeBs. The user plane data is provided by both eNodeBs, while the control plane is provided by the master eNodeBs. Master eNodeB: This eNodeB terminates the least S1-MME, and the RRC functions is provided by this eNodeB. Secondary eNodeB: This eNodeB is providing additional radio resources for the UE. For interesting posts related to [...]

Dual Connectivity in 4G 2018-10-06T20:44:50+05:30
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