Hspa Systems Architecture And Protocols Afralti-Books Pdf

HSPA Systems Architecture and Protocols AFRALTI
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LTE Basic Reference Model, UE User Equipment, S GW Serving Gateway. P GW PDN Gateway, MME Mobility Management Entity, eNB evolved Node B. HSS Home Subscriber Server, LTE Basic Reference Model. PCRF Policy Control and Charging, Rule Function, IMS IP Multimedia Subsystem. EPC Evolved packet Core, SAE System Architecture Evolution.
LTE Long Term Evolution, EPS Evolved Packet System. User Equipment UE, Access device for user, Provides measurements that indicate. channel conditions to the network, eNodeB 1 3, Hosts PHYsical PHY Medium Access. Control MAC Radio Link Control, RLC and Packet Data Convergence. Protocol PDCP layers, Controls user plane header compression.
and encryption, Provides Radio Resource Control RRC. functionality for the control plane, eNodeB 2 3, Functions include. radio resource management, admission control, scheduling enforcement of negotiated uplink. cell information broadcast, ciphering deciphering of user and control. plane data and, compression and decompression of downlink.
and uplink user plane packet headers, eNodeB 3 3, Cell control and MME pool support. Mobility control, Control and User Plane security, Shared Channel handling. Packet Segmentation Concatenation, Scheduling, Multiplexing and Mapping. Physical layer functionality Measurements and reporting. Automated operation and maintenance, Serving Gateway S GW. Routes and forwards user data packets, Acts as the mobility anchor for the user plane.
during inter eNB handovers and as the anchor, for mobility between LTE and other 3GPP. technologies, Terminates the downlink data path for idle state. UEs and triggers paging when DL data arrives, for the UE. Manages and stores UE contexts e g, parameters of the IP bearer service and network. internal routing inform, PDN Gateway P GW, Provides connectivity between the UE and.
external packet data networks PDNs by being, the point of exit and entry for UE traffic A UE. may have simultaneous connectivity with more, than one P GW for accessing multiple PDNs. Performs policy enforcement packet filtering, for each user charging support lawful. Interception and packet screening, Acts as the anchor for mobility between 3GPP. and non 3GPP technologies such as WiMAX, and 3GPP2 CDMA 1X and EvDO.
MME Mobility Management Entity 1 2, The key control node for the LTE network. Responsible for idle mode UE tracking and, paging procedure including retransmissions. Controls bearer activation deactivation process, Chooses the Serving Gateway S GW for a UE. at initial attachment and at the time of intra LTE. Authenticates the user by interacting with the, Home Subscriber Server HSS. MME Mobility Management Entity 2 2, The termination point for the Non Access.
Stratum NAS signaling, NAS signaling is responsible for generation and. allocation of temporary identities to UEs and, checks the authorization of the UE to camp on. the system, The termination point for ciphering and. integrity protection for NAS signaling, Handles security key management. Controls plane function for mobility between, LTE and other access networks.
Policy and Charging Role Function, The Policy and Charging Rules Function PCRF. A policy decision point for policy and charging, control of service data flows and IP bearer. Selects and provides the applicable policy and, charging control decision to the PCEF i e P. The policy and charging control element, Policy and Charging Role Function. A single logical PCRF entity may be, deployed by means of multiple and.
separately addressable PCRFs in the, In this case the PCRF discovery and. selection is enabled by Diameter, Routing Agency DRA. More detail in TS 23 203 73, Home Subscriber Server. The HSS is already introduced by UMTS release 5, With LTE SAE the HSS will get additionally data per. subscriber for SAE mobility and service handling, Some changes in the database as well as in the HSS.
protocol DIAMETER will be necessary to enable HSS, for LTE SAE. The HSS can be accessed by the MME via S6a interface. The HSS is the permanent and central subscriber, stores mobility and service data for every subscriber and. contains the Authentication Center AuC functionality. LTE U Interface, Air interface of EUTRAN, Based on OFDMA in downlink and SC. FDMA in uplink, FDD and TDD duplex methods, Scalable bandwidth 1 4MHz to 20 MHz. Data rates up to 100 Mbps in DL, MIMO Multiple Input Multiple Output.
HSPA Systems Architecture and Protocols The HSS can during these procedures 2G 3G networks 24 Rx Interface

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