Podcast
Questions and Answers
What is the main purpose of the System Architecture Evolution (SAE) in 4G LTE networks?
What is the main purpose of the System Architecture Evolution (SAE) in 4G LTE networks?
- To introduce more complexity into LTE networks
- To remove the eNB and Access Gateway (aGW) from the network architecture
- To limit the inter-working with other related wireless technology
- To simplify LTE networks and establish a flat architecture similar to other IP based communications networks (correct)
Which entities are specifically managed to allow non-3GPP technologies to interface directly with the network in SAE?
Which entities are specifically managed to allow non-3GPP technologies to interface directly with the network in SAE?
- X2 interface and S1 interface
- UTRAN and EPC
- RNC and SGSN
- eNBs and Access Gateway (aGW) (correct)
What is the purpose of the X2 interface in the evolved UTRAN of 4G LTE?
What is the purpose of the X2 interface in the evolved UTRAN of 4G LTE?
- To manage the handover of UEs in LTE_ACTIVE
- To interconnect eNBs with each other (correct)
- To terminate U-plane and C-plane protocols towards the UE
- To connect eNBs with the EPC (Evolved Packet Core)
What does the S1 interface support in 4G LTE architecture?
What does the S1 interface support in 4G LTE architecture?
What does the Evolved UTRAN consist of in 4G LTE networks?
What does the Evolved UTRAN consist of in 4G LTE networks?
Study Notes
System Architecture Evolution (SAE) in 4G LTE networks
- The main purpose of SAE is to provide a flat, all-IP architecture that enables multiple access technologies to be integrated into a single core network.
Interfacing with non-3GPP technologies
- The entities managed to allow non-3GPP technologies to interface directly with the network in SAE are:
- Mobility Management Entity (MME)
- Serving Gateway (SGW)
- Packet Data Network Gateway (PDN GW)
X2 interface in evolved UTRAN
- The purpose of the X2 interface is to facilitate communication between eNodeBs (eNBs) in the evolved UTRAN, enabling features such as load balancing, resource allocation, and handovers.
S1 interface in 4G LTE architecture
- The S1 interface supports the separation of control and user plane traffic, allowing the MME to handle control functions and the SGW to handle user data.
Evolved UTRAN (E-UTRAN) in 4G LTE networks
- The Evolved UTRAN consists of:
- eNodeBs (eNBs), which provide the radio access network functionality
- The X2 interface, which enables communication between eNBs
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Description
Test your knowledge of the System Architecture Evolution (SAE) and Evolved Packet Core (EPC) in 4G LTE networks. This quiz covers the simplified network architecture, the role of eNB and Access Gateway, and the transition to an 'All-IP' network.
