xGW(SGW/PGW)

SGW(Serving Gateway)
The SGW node handles the user data traffic, but isn' t responsible for the signaling data used. It transports IP data from UE's to the LTE Core Network. The SGW also routes incoming and outgoing IP packets for better system collaboration and serves as an anchor for the UE when it moves from one eNodeB to another.

PGW (PDN Gateway)
PGW is the network node that connects the EPC to external IP networks. What the PGW does is that it routes packets to and from external IP networks. Beyond that, it also allocates an IP address to all UEs and enforces different policies regarding IP user traffic such as packet filtering.
xGW(SGW/PGW)
Performance
Users: From 500 subs to 10 million subs
Users: From 500 subs to 10 million subs
Throughput: Support 30 Gbps per instance
Throughput: Support 30 Gbps per instance
Support redundancy deployment
Support redundancy deployment
NFV Deployment on COTS and Cloud
NFV Deployment on COTS and Cloud
IPLOOK's Virtualized SGW/PGW
The integrated xGW(SGW and PGW) enables virtualized network functions
IPLOOK has combined SGW and PGW in LTE into one component xGW. Both of these two elements can be deployed as virtualized element. The SGW and PGW functions could be realized as a single network element.
The SGW and PGW software processes support standard 3GPP interfaces and are interoperable with the products of other vendors.
IPLOOK xGW processes can also be distributed in a number of different ways:
▫  A single instantiation, centrally located in a data center
▫  Separate instantiations, distributed remotely
▫  An integrated model, in which some processes are located centrally and others are distributed remotely
IPLOOK's Virtualized SGW/PGW The integrated xGW(SGW and PGW) enables virtualized network functions
Features
 
Session Management
»  EPC bearer establishment, modification, and release
»  Multi-PDN Connection management
Mobility Management
»  Mobility timer management
»  Attach/Detach
»  TAU
»  Handover
»  Purge
»  Service Request and Paging
Data forward and route path selection
Charging function
IP address allocation
Overload control
Interfaces comply to 3GPP R14
»  Rx: between the PCRF and AF
»  S5/8: between SGW and PGW
»  Gx: between the PCRF and PGW
»  Gy: between the OCS and PGW
»  Ga: between the CG and PGW
»  Gn: between the SGSN and PGW
»  SGi: between the PGW and extern Packet Data Networks
»  S1-U: Between eNodeB and SGW
»  S11: Between SGW and MME
»  S5/S8: S5 connects the visited SGW and home PGW when the users are roaming; S8 connects the local SGW and local PGW
»  S4/Gn: connects SGSN and SGW
Lawful interception support
QoS control
Lawful interception support
PCEF Function
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