Prose Enabled UE

[TTA] (D2D)

D2D 3GPP

LG

([email protected])

2013.04.26

2

Contents

Overviews

Introduction of 3GPP

3GPP Release

EPS architecture

3GPP ProSe progress

Use cases for Proximity Service

Basic concepts

Service requirements

Alternative architectures

Key issues and future works

Conclusions

References

3

Overviews Introduction of 3GPP 3GPP Release EPS architecture

4

Introduction of 3GPP

www.3gpp.org

Technical Specifications

5

3GPP Release 3GPP Rel - 12 Plan

Stage 1 complete: 2013.03 (with some exception items)

Stage 2 target: 2013.12 Stage 3 target: 2014.06

R12

6

EPS Architecture EPS (Evolved Packet System) is composed of

EPC (Evolved Packet Core)

User Equipment (UE)

Access Network

3GPP access

Non -3GPP access

Operator IP

service Network

(e.g. IMS)

UntrustedNon-3GPP Access

(e.g. WLAN)

3GPP Pre- Rel8 Access

3GPP Pre-Rel8 Access

TrustedNon- 3GPP Access

TrustedNon-3GPP Access

(e.g. CDMA/WiMax)

3GPP Rel8 access(e.g. E-UTRAN)

Evolved Packet Core

PDN GWPDN GW

S-GWS-GW

MME

ePDG

S5

S2b

S2a

SGi

S1-MME

S1-U

S11

S3

S4

S2c

S2c

HSS

SGSN(e.g. UTRAN/GERAN)

S6d

S6a

HSS: Home Subscriber Server MME: Mobility Management Entity S-GW: Serving Gateway P-GW: Packet Data Network Gateway ePDG: Evolved Packet Data Gateway

S1-MME: NAS(Non-Access-Stratum) protocol S1-U: GTP(GPRS Tunneling Protocol) for User Plane S3, S11: GTP for Control Plane S4: GTP for User Plane, GTP for Control Plane S5: GTP for User Plane, GTP for Control Plane, PMIP(Proxy Mobile IP) S6a, S6d: Diameter protocol

S2a: PMIP, GTP(from Rel-11) S2b: PMIP, GTP(from Rel-10) S2c: DSMIP(Dual Stack MIP)

7

3GPP ProSe progress (Release 12)

8

Proximity - based Services (ProSe)

3GPP D2D (1/2)

SA1 Normative work [ TS 22.278, TS 22.115]

SA2 Study [TR 23.703]

2011 9 SA1 study item

/

2012 12 SA1 study item SA1/SA2 WID (SP-120935)

RAN study

2013 12 Rel-12 stage 2 Target

http://www.3gpp.org/ftp/tsg_sa/tsg_sa/TSGS_59/Docs/SP -130030.zip (The latest version)

SA2 Normative

10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3

SA1 Study [TR 22.803]

2013 3 SA3 study (SP-130030)

SA3 Study [TR 33.xxx]

2013 2014
http://www.3gpp.org/ftp/tsg_sa/tsg_sa/TSGS_59/Docs/SP-130030.ziphttp://www.3gpp.org/ftp/tsg_sa/tsg_sa/TSGS_59/Docs/SP-130030.ziphttp://www.3gpp.org/ftp/tsg_sa/tsg_sa/TSGS_59/Docs/SP-130030.zip

9

Proximity - based Services (ProSe) (cont.)

Rapporteur: Qualcomm

Scope

1) ProSe Discovery over E - UTRA

within network coverage and

outside network coverage, only for Public Safety

2) ProSe Communication over E - UTRA

within network coverage and

outside network coverage, only for Public Safety

3) EPC support of ProSe Communication over WLAN

* Direct control of the WLAN link is outside the scope of 3GPP

3GPP [SA1] TR 22.803: Feasibility study for Proximity Services (ProSe) [SA1] TS 22.278: Service requirements for the Evolved Packet System (EPS) [SA1] TS 22.115: Charging requirements for Prose [SA2] TR 23.703: Study on architecture enhancements to support proximity services

3GPP D2D (2/2)

10

[SA1] Use cases for Proximity Service

11

ProSe Discovery Use Case (1)

Restricted Discovery (e.g. social networking application)

Mary John Peter

Relationship (explicit permission)

Mary

John

Peter

Operator Networks

Discovery range

12


Open ProSe Discovery (Discovery 'without explicit permission' )

Mary Mary Mary

Shop A Shop B Shop C Discovery range

13

PLMN C

PLMN B PLMN A


Discovery between PLMNs including roaming

Mary John

John (roaming UE) Discovery range

14

LTE as well as Public Safety Spectrum dedicated to ProSe Service

Public Safety Use Case (1)

MME/GW

LTE coverage

Public Safety UE

UE as a relay (Public Safety ProSe -enabled UE)

Even not discovered but Public Safety UE

Public Safety UE outside LTE coverage

Public Safety UE outside LTE coverage

Public Safety UE

15

ProSe Group Communication & ProSe Broadcast with a single transmission

Public Safety Use Case (2)

MME/GW

LTE coverage

Prose -enabled UE

UE as a relay (in or out of coverage) (Public Safety ProSe -enabled UE)

Group X With a single transmission

Even not discovered but Public Safety ProSe -enabled UE

Public Safety UE outside LTE coverage (with group membership

Public Safety UE outside LTE coverage (without group membership)

16

social networking applications, the presence and location related service, discovery restaurants or shops or stores in proximity, smart parking meters, etc

ProSe Discovery based on three range classes (e.g. short, medium, long )

Integrated information with presence and location

-1 -

MME/GW

Path Switching, Service continuity

System monitoring and control about ProSe communication path e.g. Channel condition, QoS of Path, Volume of traffic, etc.

UE-1

Proximity criteria - for discovery and: e.g. radio/geographical range - for communication: e.g. radio range, communication range, channel conditions, achievable QoS

Non - Public Safety Use Cases

17

2) Provides WLAN configuration information

ProSe - assisted WLAN Direct Communications

WLAN Direct communication range

MME/GW

Path Switching, Service continuity

ProSe -enabled UE with WLAN capability

18

Basic Concepts

19

ProSe - enabled UE

A UE that supports ProSe requirements and associated procedures. 1)

Unless explicitly stated otherwise, a Prose -enabled UE refers both to a non -public safety UE and a public safety UE.

ProSe - enabled Public Safety UE:

A ProSe -enabled UE that also supports ProSe procedures and capabilities specific to Public Safety.

ProSe - enabled Non - public Safety UE:

A UE that supports ProSe procedures and but not capabilities specific to public safety.

A UE that supports ProSe Discovery and ProSe Communication. Unless explicitly stated otherwise, a ProSe -enabled UE refers to any ProSe -enabled UE (i.e. Public Safety or not). 2)

ProSe - enabled Network: a network that supports ProSe Discovery, and/or ProSe Communication. 2)

1) TR 23.703, 2) TS 22.278

20

ProSe Discovery

ProSe Direct Discovery

A procedure employed by a ProSe -enabled UE to discover other ProSe -enabled UEs in its vicinity

by using only the capabilities of the two UEs with Rel.12 E -UTRA technology.

EPC- level ProSe Discovery

A process by which the EPC determines the proximity of two ProSe -enabled UEs and informs them of their proximity.

21

ProSe Communication (1/2)

ProSe Communication

A communication between two or more ProSe -enabled UEs in proximity

by means of a ProSe Communication path .

any/all of the following :

ProSe E -UTRA Communication or

ProSe -assisted WLAN direct communication between only two UEs,

ProSe Group Communication or ProSe Broadcast Communication.

ProSe Direct Communication

A communication between two or more UEs in proximity that are ProSe -enabled,

by means of user plane transmission using E -UTRA technology via a path not traversing any network node .

22

ProSe Communication (2/2)

ProSe Communication path The communication path supporting ProSe Communication.

ProSe E -UTRA Communication path could be established e.g. directly between the ProSe -enabled UEs using E - UTRA , or routed via local eNB(s).

ProSe -assisted WLAN direct communication path is established

directly between the ProSe -enabled UEs using WLAN .

UE

1

UE

2

eNB

eNB

SGW/PGW

UE

1

UE

2

eNB

eNB

SGW/PGW

23

ProSe Group Communication

A one - to -many ProSe E -UTRA Communication, between more than two Public Safety ProSe -enabled UEs in proximity,

by means of a common ProSe E -UTRA Communication path established between the Public Safety ProSe - enabled UEs .

24

Relay

ProSe UE - to - Network Relay

a form of relay in which a Public Safety ProSe - enabled UE acts as a ProSe E -UTRA Communication relay

between a Public Safety ProSe -enabled UE and the ProSe -enabled network using E -UTRA.

ProSe UE - to - UE Relay

a form of relay in which a Public Safety ProSe - enabled UE acts as a ProSe E -UTRA Communication relay

between two other Public Safety ProSe -enabled UEs.

25

Coverage

It relates to E- UTRAN only .

E.g. if a ProSe UE is under GERAN coverage but not E -UTRAN coverage, it is considered as "out of coverage [ S1-131237 ]

Cf. TS 22.278

described as -

described as served by E -

http://www.3gpp.org/ftp/tsg_sa/WG1_Serv/TSGS1_61_Prague/docs/S1 -131237.zip
http://www.3gpp.org/ftp/tsg_sa/WG1_Serv/TSGS1_61_Prague/docs/S1-131237.ziphttp://www.3gpp.org/ftp/tsg_sa/WG1_Serv/TSGS1_61_Prague/docs/S1-131237.ziphttp://www.3gpp.org/ftp/tsg_sa/WG1_Serv/TSGS1_61_Prague/docs/S1-131237.zip

26

[SA1] Service Requirements

27

Requirements for Proximity Services

The requirements listed exclude GSM and UMTS. Proximity Services shall not impact either of GSM and UMTS.

1) General Requirements for Proximity Services

2) Public Safety Specific Requirements for Proximity Services

3) ProSe -assisted WLAN direct communication

4) ProSe Security, Authorization and Privacy Requirements

5) ProSe Charging Requirements

28

General Requirements for Proximity Services

The ProSe capability features may include the following:

Announce application is able to allow a UE to be discovered by other UEs interested in it. This method shall be consistent with ProSe Discovery requirements, and subject to network control. Monitor application to allow a UE to discover other UEs of interest for this application. This method shall be consistent with ProSe Discovery requirements, and subject to network control. Communicate a service method that shall enable an application to initiate communication with the authorised application on another UE in its proximity. The Network can then apply Prose Communication, if appropriate.

Not cover all requirements

29

Public Safety Specific Requirements

Pro ximity services shall not be available to ProSe - enabled UEs not served by E - UTRAN , except in the following cases:

Public Safety ProSe - enabled UEs can use ProSe services when operating on public safety spectrum even when not served by E -UTRAN. In this case, at least a one - time pre -authorization to use ProSe services is needed. A Public Safety ProSe - enabled UE with ProSe Discovery enabled shall be able to discover other discoverable Public Safety ProSe -enabled UEs when some or all of the Public Safety ProSe -enabled UEs involved in ProSe Discovery are not served by E -UTRAN, whether or not ProSe E -UTRA Communication is used (including whether or not ProSe Group Communication or ProSe Broadcast Communication are used).

Not cover all requirements

Documents

Prose Enabled UE