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TSG-A WG3
TITLE: TSG-A.3 Discussion Point
SOURCE:
Scott Marin, s.marin@motorola.com, WG3 acting chair
ABSTRACT: This contributions presents discussion points for the Joint TSG-C/A
meeting in Tampa regarding Mobile Terminated eCSFB requiring hard handoff via the
MSC.
This contribution supersedes A30-20101012-024r1 TSGA WG3 chair e1xCSFB MT
HHO discussion points.ppt.
RECOMMENDATION: Approve for presentation at the Joint TSG-C/A meeting.
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This document has been prepared by the Motorola to assist the development of specifications by 3GPP2. It is proposed to the Committee as a basis for discussion and is not to
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MT eCSFB call delivery with CPN
Options proposed for Calling Party Number Presentation (CPNP). Note: Calling Party
Number (CPN), Calling Party Information (CPI), and Calling Party Number
Presentation mean the same thing the following contributions:
•
Ericsson, -- CPN shown while on LTE, call accepted/rejected, requires General Page
Message (GPM), CPN, Signal sent before Page Response on LTE (three options).
–
•
Huawei – CPN delivered on LTE and shown when UE is in LTE. Bundling not used.
–
•
A30-20101025-013r0-HW LTE-1xRTT eCSFB MT Call procedure.doc
CTC/ZTE/QC – CPN transmitted when UE is in LTE, but presented to UE after
moving 1x Traffic Channel (TCH). Bundles UHDM+AWI.
–
•
A30-20101025-010r0 [E] eCSFB Call termination.doc
A30-20100913-015r1_CTC_QC_ZTE_e1xCSFB MT call with call accepted for standalone
IWS(UHDM+AWI).doc
ALU/Mot/QC/KDDI/NEC/Hitachi – CPN forwarded in the HO messages to the target
1xBS. Bundling not used.
–
A30-20101025-005r0 ALU Mot QC KDDI NEC Hit eCSFB MT Call flow procedure IWS-1xBS
with HO.doc
TSG-A is considering standardizing one or more solutions.
MT eCSFB call delivery with CPN -Ericsson
•
•
Figuress x.x.2 and x.x.3 from A3020101025-010r0 [E] eCSFB Call
termination.doc
IWS/BS or
. MS / UE
Standalone
eNB
MME
IWS
MS / UE
eNB
Standalone
IWS
MME
1 x BS
MSC
time
TS 23.272 Figure B.2.3a.4-1 Steps 1-5
MS/UE is EUTRAN attached and registers with the MSC
a
The UE indicates that it supports enhanced 1xCSFB.
Paging Request (CPI)
b
Paging Request
c
d
See section discussing the three possible options
time
TS 23.272 Figure B.2.3a.4-1 Steps 6-9
T 3113
f
MS/UE performs Extended Service Request.
T 3113
Option 1
TS 23.272 Figure B.2.3a.4-1 Steps 10-15a
GCSNA (Page Response Message)
GCSNA ( GPM )
A21-1x air Interface
signalling message
A21-1x air Interface
signalling message
c
h
Assignment Request (CPI)
GCSNA( FNM (Calling Party Number, Signal ) )
A21-1x air Interface
signalling message
g
Complete L3 Info Paging Response
i
Assignment Complete
j
d
Handoff Required
k
HO Request
T7
-
HO Request Ack
l
m
Handoff Command
GCSNA (UHDM)
A21-1x air Interface
signalling message
Option 2
n
o
Handoff Commenced
p
GCSNA (GPM, FNM)
A21-1x air Interface
signalling message
c
TS 23.272 Figure B.2.3a.4-1 Steps 16
MS acquires 1x traffic channel over 1x radio
q
1x Handoff Complete Message
r
Handoff complete
T 306
Option 3
AWI (CPI)
Clear Command
GCSNA [CPN, Signal](GPM)
A21-1x air Interface
signalling message
Clear complete
c
s
t
u
T 315
v
1x Alert With Information Message (CPI)
w
1x Connect Order
x
Connect
y
MT eCSFB
call delivery
with CPN -Huawei
MS/UE
MME
GCSNA: GPM
GCSNA: Page Response
MSC
Paging Request
Paging Request
S102:A21-1x air interface signalling
message(GCSNA:GPM)
S102:A21-1x air interface signalling
message(GCSNA:PRM)
T3113
T3113
c
e
Assignment Complete
f
S102:A21-1x air interface signalling
message(GCSNA:CPN)
g
h
T301
S102:A21-1x air interface signalling
message(GCSNA:Connect)
i
Connect Order
j
Handoff Required
k
Handoff Request
Handoff
Request Ack
T7
GCSNA: UHDM
d
Assignment Request
MS/UE performs Extended Service Request
procedure in E-UTRAN as specified in 3GPP TS
23.272
GCSNA: Connect
S102:A21-1x air interface signalling
message(GCSNA:UHDM)
E-UTRAN releases S1 UE context and EPS bearer
is suspended as specified in 3GPP TS 23.272
T11
l
m
Handoff Command
n
Handoff Commenced
o
p
T9
q
1x Radio interface procedures to acquire 1x traffic channel
1x Handoff Complete message
time
a
b
Complete L3 Info:
Paging Response
1st
Figure from A3020101025-013r0-HW
LTE-1xRTT eCSFB MT
Call procedure.doc
1x BS
Tunneled Messaging
GCSNA: CPN
•
IWS
T306
r
Handoff complete
s
t
Clear Command
T315
Clear complete
u
UE/MS
MT eCSFB
call delivery
with CPN –
CTC, ZTE, QC
•
Fig x.x.-1 from
A30-20100913015r1_CTC_QC_Z
TE_e1xCSFB MT
call with call
accepted for
standalone
IWS(UHDM+AWI).
doc
eNB
MME
IWS
1xBS
MSC
time
Paging Request
a
Paging Request
S102: A21-1x air
interface signaling
GCSNA (GPM)
b
T3113
T3113
MS/UE performs Extended Service Request procedure in EUTRAN as specified in 3GPP TS 23.272
GCSNA (Paging Response)
c
S102: A21-1x air
interface signaling
d
Complete L3 Info:
Paging Response
e
T303
Assignment Request
f
Assignment Complete
T10
g
Handoff Required
h
Handoff Request
i
T7
HandoffRequestAck
T11
j
HandoffCommand
GCSNA (UHDM+AlertWithInfo)
k
S102: A21-1x air
interface signaling
l
HandoffCommenced
m
E-UTRAN releases S1 Context and EPS
bear is suspended as specified in 3GPP
TS 23.272
1x traffic channel acquire
T9
T301
n
T306
o
1x Handoff Complete
p
HandoffComplete
q
ClearCommand
r
ClearComplete
T315
s
ConnectOrder
t
Connect
u
MT eCSFB
call delivery
with CPN –
ALU, QC, Mot,
KDDI, NEC,
Hitachi
•
•
Figure xx from
A30-20100913029BR2 eCSFB
MT Call flow
procedure IWS1xBS with
HO.doc
KDDI, NEC,
Hitachi have cosigned A3020101025-005r0,
which updates to
29Br2.
MS/UE
eNB
MME
IWS-1xBS
Target BS
MSC
a
MS/UE is E-UTRAN attached and registers with the MSC. The UE indicates that it supports e1xCSFB.
Paging Request
GCSN: GPM
b
S102: A21-1x air interface
signalling message
(GCSNA: GPM)
c
T3113
UE performs Extended Service Request procedure
as shown in 3GPP TS 23.272
GCSNA: Page Response message
S102: A21-1x air interface
signalling message
(GCSNA: Page Response
message)
d
e
Complete L3 Info:
Paging Response
T303
f
Assignment Request (CPI)
g
T10
Assignment Complete
h
Handoff Required (CPI)
i
HO Request (CPI)
Handoff
Request Ack
T7
GCSNA (UHDM)
time
T306
j
k
Handoff Command
l
Handoff Commenced
m
n
A21-1x air interface
signalling message
E-UTRAN releases S1 UE context and EPS bear is
suspended as shown in 3GPP TS 23.272
T11
T9
o
T301
1x Radio interface procedures to acquire 1x traffic channel
p
1x Handoff Complete message
q
Handoff Complete
r
s
Clear Command
T315
Clear Complete
1x Alert With Information Message (CPI)
t
u
1x Connect Order
v
Connect
w
MT eCSFB
call delivery
with CPN –
Non
functional
composite of
proposals
MS/UE
IWSsource1xBS
MME
Target
1xBS
MSC
a
MS/UE is E-UTRAN attached and registers with the MSC. The UE indicates that it supports e1xCSFB.
Paging Request (CPI)
Paging Request
GCSNA (GPM)
b
c
A21-1x air interface
signalling message
Ericsson*
GCSNA(Feature Notification Message (CPI))
T3113
T3113
MS/ UE does ESR. MME does tunnel
redirection as in TS 3GPP 23.272
d
GCSNA (Page Response message)
e
A21-1x air interface
signalling message
This figure is Huawei**
not a call flow
for ease in
undertandingCTC,ZTE,QC
key
differences
between the
options
Complete L3 Info:
Paging Response
f
Assignment Request (CPI)
g
Assignment Complete
h
GCSNA(CPI)
Handoff Required (CPI)
ALU,QC, Mot, KDDI, NEC, Hit
T7
i
j
HO Request (CPI)
Handoff
Request Ack
k
l
Handoff Command
GCSNA (UHDM + 1xAWI (CPI))
m
A21-1x air interface
signalling message
n
Handoff Commenced
T301
1x Radio interface procedures to acquire 1x traffic channel
1x Handoff Complete message
T9
o
T11
T306
p
Handoff complete
AWI (CPI)
Clear Command
ZTE
q
r
s
T315
Clear complete
t
ALU,QC, Mot, KDDI, NEC, Hit
1x Alert With Information Message (CPI)
1x Connect Order
Notes: * Step u still occurs in Ericsson scheme leading to “double alerting”
** Step u does not occur in the Huawei, ZTE schemes
u
v
Connect
w
Summary of Potential Impacts to
TSG-C for MT eCSFB w/HHO
• Ericsson proposals
– C.S0097 might be affected, but can present CPN and signal to
user when UE is in LTE
– UE impact and changes to C.S0097 (depending on Option).
• Huawei proposals
– C.S0097 affected but can present CPN when UE is in LTE
– No bundling
• CTC/ZTE/QC sends AWI with UHDM in bundled GCSNA.
– C.S0097 impact and bundles
• ALU/QC/Mot/KDDI/NEC/HIT CPI in Handoff messages.
– supports C.S0097-0 v1.0 (a.k.a. GCSNA 1.0)
– No UE impact. No Bundling.