This document discusses the key interfaces, architecture, and procedures related to control and user planes, mobility management, and connection management in 3G networks. The control plane handles protocols for controlling radio access bearers and the connection between UE and network. It has physical, data link, and network layers. The user plane is responsible for transferring user data through access and core network protocols. Mobility management allows tracking and delivering services to mobile subscribers via location management, registration, and security functions. Connection management establishes and maintains connections to exchange information with peer entities.

1. CONTROL & USER PLANE,
MOBILITY & CONNECTION
MANAGEMENT
Presented By:
Manish Srivastava

2. INTERFACES
 Cu Interface: electrical interface between the
USIM and ME.
 Uu Interface: radio interface between UE and
UTRAN .
 Iu Interface: this connects UTRAN to the CN.
 Iur Interface: allows soft handover between RNCs
.
 Iub Interface: the Iub connects a Node B and an

4. GENERAL ARCHITECTURE
 Radio interface protocols can be divided into two
categories: horizontal layers and vertical planes.
 Horizontal layers can be broadly divided into two
categories:
ACCESS STRATUM(AS) and NON-ACCESS
STRATUM (NAS).
 Vertical planes can be broadly classified into USER
PLANE and CONTROL PLANE which takes
place over Uu and Iu interfaces.

5. GENERAL ARCHITECTURE

6. CONTROL PLANE
 Protocols for controlling the radio access bearers
and the connection between the UE and the
network.
 Has three layers: physical layer, data-link layer
and network layer.
 Data link layer comprises of MAC and RLC.
 Network layer comprises of RRC ,MM,GMM
and CM.
 RLC,MAC and PHY are also present in USER
PLANE.

8. USER PLANE
 U-plane is responsible for the transfer of user
data, such as voice or application data through
the access stratum.
 It consists of Applications ,CN protocols and RAN
protocols.
 CN comprises of Data Protocols such as
IP,PPP,OSP and others.
 RAN comprises of PDCP,BMC,RLC,MAC and
PHY.

10. MOBILITY MANAGEMENT
Mobility management allows mobile phones to
work by tracking where the subscribers are,
allowing calls, SMS and other mobile phone
services to be delivered to them.
Functions:
• Location management
• Network registration
• Security function

11. MM PROCEDURES
COMMON PROCEDURES:
The common procedures basically include:
• TMSI reallocation procedure.
• Authentication procedure.
• Identification procedure.
•Information procedure.
SPECIFIC PROCEDURE:
• Normal location updating procedure;
• Periodic updating procedure;
• IMSI attach procedure.

12. CONNECTION MANAGEMENT PROCEDURES:
 Establish,
 Maintain
 release
MM connection between the mobile station and
the network over which an entity of the upper CM
layer can exchange information with its peer.

14. LOCATION UPDATE
 The cells broadcast their cell identities.
 The MS periodically listens to the broadcast cell
identity, and compares it with the cell identity stored
in the MS’s buffer.
 If the comparison indicates that the location has
been changed, then the MS sends the location
update message to the network.
 It takes place either when MS detects when location
has been changed or periodically.

15. CONNECTION MANAGEMENT
Connection management (CM) sub layer consists
of
 Call control
 Supplementary services
 Short message service
 Session management
 GPRS SMS

16. Call Control
 Call-establishment procedures
A call can be either a mobile-originated call (MOC) or
a
mobile terminated call (MTC).
 Call-clearing procedures
It can be initiated either by the UE or by the network.
 Call-information-phase procedures
Informs the user about call-related events, such as
user
suspension or resume
 Miscellaneous procedures
include in-band tones and announcements, status
inquiry, and call
reestablishment.

17. Supplementary Services
 value-added services that may or may not be
provided by the network operator
 advice of charge (AoC), call forwarding (CF),
and call waiting (CW) supplementary services
 services belong to the NAS
Short Message Service
 non-real-time service
 a store and-forward service in which messages
can be stored on the SMSC an delivered when
the destination UE is available.

18. Session Management
 protocol is to support packet data protocol(PDP)
context handling of the user terminal.
 communicating entities do need to know about the
characteristics of the data to be transferred, it is
performed by the PDP context-activation procedure
GPRS Short Message Service
 protocol task handles the SMS service while the UE is
attached to the PS CN

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