What is S7 interface in LTE?
Interface: S7
It provides transfer of QoS service and charging rules from Policy and PCRF to Policy and Charging Enforcement Function (PCEF) in PDN-GW.
Which interface is based on AAA protocol in LTE?
S6a interface between MME and HSS. It enables transfer of subscription and authentication data for authenticating/authorizing user access to the evolved system (AAA interface) between MME and HSS.
What speed does LTE offer and LTE architecture?
What speed LTE offers? LTE provides downlink peak rates of at least 100Mbit/s, 50 Mbit/s in the uplink and RAN (Radio Access Network) round-trip times of less than 10 ms.
What is S4 interface in LTE?
S4 INTERFACE S4 interface is between SGSN and SGW. As we know that LTE APNs are configured in the P-GW, so the SGSN gets the information about the APN from P-GW through S-GW. So when a UE directly switches from LTE to 3G network, SGSN will contact S-GW to establish a session.
What is S1 interface in LTE?
The S1 interface connects the eNB to the EPC. It can be split into control-plane (S1-MME) and user-plane (S1-U). The S1-MME is a signaling interface which supports a set of functions and procedures between the eNB and the MME.
What is PDN in LTE?
These networks are called PDN (Packet Data Network), hence the name. The PDN GW routes packets to and from the PDNs. The PDN GW also performs various functions such as IP address / IP prefix allocation or policy control and charging.
Which protocol is used in VoLTE?
With an IMS core as its foundation, VoLTE employs the Session Initiation Protocol (SIP) for registration, authentication addressing, call establishment and call termination. The Session Description Protocol (SDP) is employed for RTP media and bandwidth negotiation.
What is X2 interface in LTE?
The X2 is the interconnecting interface between two eNodeBs in LTE network and supports both Control Plane and User Plane. The principle Control Plane protocol is X2-AP (X2 Application Protocol) resides on SCTP (Stream Control Transmission Protocol).
What is eNB LTE?
E-UTRAN Node B, also known as Evolved Node B (abbreviated as eNodeB or eNB), is the element in E-UTRA of LTE that is the evolution of the element Node B in UTRA of UMTS.
What is the difference between LTE and LTE Advanced?
LTE is the cellular technology that 4G networks are based on, and LTE Advanced is an enhancement that improves the original LTE technology. LTE, as per 3GPP Release 8, provides peak data rates of up to 300 Gbps, whereas LTE Advanced, as per 3GPP Release 10, enables peak data rates of up to 1 Gbps.
What is S11 interface?
S11 – This is the interface between the MME and S-GW in an LTE network. The interface is based on Gn/GTP-Control (GTP-C) (interface between SGSN-GGSN) with some additional functions for paging coordination, mobility compared to the legacy Gn/GTP-C (SGSN-GGSN) interface. S11 is a many-to-many interface.
What is X2 and S1 interface?
eNodeBs have two interfaces, the X2 interface permits eNodeBs to intercommunicate with each other directly, and the S1 interface permits communication with the “Packet Core”. The X2 is the interconnecting interface between two eNodeBs in LTE network and supports both Control Plane and User Plane.
What is S5 interface in LTE?
S5 interface
It provides user plane tunnelling and tunnel management between Serving GW and PDN GW. It is used for Serving GW relocation due to UE mobility and if the Serving GW needs to connect to a non-collocated PDN GW for the required PDN connectivity.
What is EPS and EPC?
EPS is composed of E-UTRAN (Evolved UTRAN) and EPC (Evolved Packet Core) which are commonly known as 3G-LTE (Long Term Evolution) and SAE (System Architecture Evolution) respectively. E-UTRAN is focused on the evolution of the Radio Access Network while EPC looks into the future needs of the core network.
What is EPC and IMS?
First of all there is the Evolved Packet Core (EPC) and then there is the IP Multimedia Sub-system (IMS), as shown in Figure 3.15. All user data goes through EPC and the data related to the operator IMS services (such Voice over LTE) goes also via IMS while traffic to the normal internet does not.
What is difference between VoLTE and LTE?
VoLTE stands for Voice over LTE, and it is pronounced as Vee O LTE. With this technology, you can concurrently send voice and data over the network without affecting the voice quality. However, in LTE, when making a voice call, your data connection will be on, and then the quality of voice will be decreased.
Is 4G LTE the same as VoLTE?
Generally, LTE is also called 4G. VoLTE stands for ‘Voice over Long Term Evolution’. It also supports 4G networks. In VoLTE, you can enjoy data connectivity while calling.
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What is the difference between LTE and VoLTE?
| LTE | VoLTE |
|---|---|
| 1. Its full form is ‘Long Term Evolution’. | 1. Its full form is ‘VoLTE stands for Voice over Long Term Evolution’. |
What is S1 and X2 handover?
LTE networks prefer using the X2 interface for performing inter eNodeB handovers. An S1 handover is a fallback for scenarios where X2 interface is not available. As the name suggests, S1 handovers take place over the S1-interface. The MME and the SGW are involved during the handover procedure.
What does eNB mean?
English National Board for Nursing, Midwifery and Health Visiting. ENB.
Is eNodeB an antenna?
In an LTE cellular network an LTE base station (eNodeB) traditionally uses three sectors and three antennas. This antenna sectorization technique ensures that sectors of the same eNodeB do not interfere with each other.
Is LTE Advanced faster than LTE?
Long Term Evolution-Advanced (LTE-Advanced) is a cellular networking standard that offers higher throughput than its predecessor, the Long Term Evolution (LTE) standard. Long Term Evolution-Advanced networks can deliver up to 1 GB per second of data, compared to a maximum of 300 MB per second over LTE networks.
Which is better 4G or LTE+?
So what’s the difference between 4G and LTE, and is 4G or LTE better? In short, 4G offers a much faster speed, more stability and access to a larger variety of online activities. LTE is a half-point between 3G and 4G, so its performance suffers compared to the fourth generation.
What is S1 in LTE?
LTE S1-UP (user plane)
The S1 user plane external interface (S1-U) is defined between the LTE eNodeB and the LTE S-GW. The S1-U interface provides non guaranteed data delivery of LTE user plane Protocol Data Units (PDUs) between the eNodeB and the S-GW. Transport network layer is built on IP transport and GTP-U.
What is S1 and X2 handover in LTE?
What is S5 and S8 interface?
S5/S8 – This is the interface between the S-GW and P-GW. In principle S5 and S8 is the same interface, the difference being that S8 is used when roaming between different operators while S5 is network internal. The S5/S8 interface is used within the Evolved Packet Core (EPC) for LTE.