1111111111111111 IIIIII IIIII 111111111111111 11111 1111111111 11111 1111111111 1111111111 11111111
`US 2017007891 lAl
`
`c19) United States
`c12) Patent Application Publication
`JEONG et al.
`
`c10) Pub. No.: US 2017/0078911 Al
`Mar. 16, 2017
`(43) Pub. Date:
`
`(54) METHOD AND APPARATUS FOR
`GENERATING CONNECTION IN WIRELESS
`COMMUNICATION SYSTEM
`
`(52) U.S. Cl.
`CPC ..... H04W 2810268 (2013.01); H04W 761022
`(2013.01); H04W 761021 (2013.01)
`
`(71) Applicant: Samsung Electronics Co., Ltd.,
`Suwon-si, Gyeonggi-do (KR)
`
`(72)
`
`Inventors: Sangsoo JEONG, Suwon-si (KR);
`Songyean CHO, Seoul (KR)
`
`(21) Appl. No.:
`
`15/125,452
`
`(22) PCT Filed:
`
`Mar. 11, 2015
`
`(86) PCT No.:
`
`PCT /KR2015/002349
`
`§ 371 (c)(l),
`(2) Date:
`
`Sep. 12, 2016
`
`(30)
`
`Foreign Application Priority Data
`
`Mar. 13, 2014
`
`(KR) ........................ 10-2014-0029875
`
`Publication Classification
`
`(51)
`
`Int. Cl.
`H04W28/02
`H04W 76102
`
`(2006.01)
`(2006.01)
`
`(57)
`
`ABSTRACT
`
`A method for transmitting and receiving a signal in a packet
`data network gateway (PGW) of a mobile communication
`system according to an embodiment of the present specifi(cid:173)
`cation comprises the steps of: receiving a first request
`message which includes an identifier of a terminal and is
`associated with a packet data network connection; sending a
`second request message to a policy and charging rules
`function (PCRF) server on the basis of the received first
`request message; and if quality of service (QoS) related
`information is included in a response message received in
`response to the second request message from the PCRF,
`performing a control associated with the packet data net(cid:173)
`work connection on the basis of the QoS related information.
`In a wireless communication system using a PMIP according
`to the present invention, it is possible to generate a PDN
`connection in accordance with the default QoS.
`
`HSS
`
`----S6a
`
`S11\
`
`84
`
`-- S12
`
`1211
`
`___ )
`
`PCRF
`
`Serving
`Gateway
`
`85
`
`PON
`Gateway
`
`SGi
`
`I
`
`140
`
`161.J
`
`S10
`
`eNB
`
`130
`
`81-U
`
`100
`
`Ex.1024
`APPLE INC. / Page 1 of 26
`
`

`

`1,0
`QO
`-....J
`0
`0
`~
`0 ....
`N
`rJJ
`c
`
`> ....
`....
`....
`
`....
`0 ....
`....
`.....
`rJJ =(cid:173)
`0 ....
`~ :-: ....
`~
`
`('D
`('D
`
`-....J
`
`N
`~Cl's
`
`.i;...
`
`110
`
`/_j
`
`!e.g. IMS, PSS etc.J
`
`Operator's IP
`
`Services
`
`AF
`
`I
`
`-------
`
`Rx
`
`sm
`
`!
`i
`
`PCRF
`
`120
`
`___ )
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`~ .....
`
`(')
`
`160
`·--\
`
`Gatewav
`
`PON
`
`Gx/
`
`S5
`
`S12
`
`140
`\
`
`Gateway
`serving
`
`S4
`
`S6a 11
`
`130
`
`S1-U
`
`S10
`
`MME
`
`100
`
`-\
`
`lTE-Uu
`
`...-1 ---,1
`
`UE
`
`t-li'-/110
`
`HSS
`
`FIG. 1
`
`S3 1 po ....__-.--____J
`
`__ /
`
`SGSN
`
`Ex.1024
`APPLE INC. / Page 2 of 26
`
`

`

`1,0
`QO
`-....J
`0
`0
`~
`0 ....
`N
`rJJ
`c
`
`> ....
`....
`....
`
`.i;...
`
`....
`0 ....
`N
`.....
`rJJ =(cid:173)
`0 ....
`~ :-: ....
`~
`
`('D
`('D
`
`-....J
`
`N
`~Cl's
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`~ .....
`
`(')
`
`I PGW does not have L_;
`230
`
`1
`
`authorized QoS
`
`j
`225
`
`220
`
`___ j
`
`TRANSMIT CCA !WITHOUT AUTHORIZED QOSJ
`
`TRANSMIT CCR [WITHOUT DEFAULT QOS!
`
`TRANSMIT PBU [NAI, APN· · · l
`
`215
`
`/ ___ )
`
`PCRF
`
`r _ _;
`208
`
`PGW
`
`___ __;
`206
`
`ePOG
`
`204
`
`/ ___ _}
`
`FIG. 2
`
`TRANSMIT CONNECTION REO
`
`210
`
`I
`
`/ __ _,
`
`RAN
`
`202
`
`/ ___ _}
`
`Ex.1024
`APPLE INC. / Page 3 of 26
`
`

`

`1,0
`QO
`-....J
`0
`0
`~
`0 ....
`N
`rJJ
`c
`
`> ....
`....
`....
`
`.i;...
`
`~
`
`('D
`('D
`
`....
`0 ....
`.....
`rJJ =(cid:173)
`0 ....
`~ :-: ....
`~
`
`-....J
`
`N
`~Cl's
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`~ .....
`
`(')
`
`I
`
`'
`;-----'
`340
`
`context
`
`PGW generate bearer
`
`335
`
`,----'
`I
`
`330
`
`,-j
`
`JRAl~SMIT CCA IAUTHORIZEU QOSJ
`
`TRANSMIT CCR !DEFAULT QOSI
`
`::
`
`SUBSCRIBE□ DEFAULT QOSl
`TRMJSMIT PBU [NA!, APN,
`
`:::-
`
`/ __ ,,)
`325
`
`-
`
`I HSS/AAA I
`
`310
`
`I
`
`'
`___ /
`308
`
`I PCRF
`
`_ _;
`306
`
`I PGW
`
`I ePilG t __ _;
`304
`
`Authentication !Subscribed default OoSJ
`
`,,.---/
`
`FIG. 3
`
`[SUBSCRIBEIJ DEFAULT QOSl
`TRANSMIT CONNECTION REQ
`
`,-_;
`320
`
`I RAN I
`
`302
`
`j
`
`Ex.1024
`APPLE INC. / Page 4 of 26
`
`

`

`1,0
`QO
`-....J
`0
`0
`~
`0 ....
`N
`rJJ
`c
`
`> ....
`....
`....
`
`435
`
`1,,,..----,/
`J
`
`I
`
`bearer context
`PGW generates
`
`....
`0 ....
`.....
`rJJ =(cid:173)
`0 ....
`~ :-: ....
`~
`
`.i;...
`
`.i;...
`
`('D
`('D
`
`-....J
`
`N
`~Cl's
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`~ .....
`
`(')
`
`,.--J
`430
`
`TRANSMIT CCA !AUTHORIZED QOSJ
`
`425
`
`authorized QoS
`default QoS as
`received, provide
`If default QoS is not
`
`420
`
`,------'
`I
`
`TRANSMIT CCR !WITHOUT DEFAULT OOSI
`
`TRANSMIT PBU INAI, APN· .. I
`
`415
`
`( __ j
`
`TRANSMIT CONNECTION REQ
`
`I
`408
`
`j
`
`I PCRF
`
`I
`406
`
`j
`
`I PGW
`
`I
`404
`
`j
`
`ePDG
`
`I
`
`410
`
`/" __ J
`
`I
`402
`
`j
`
`I RAN
`
`FIG. 4
`
`Ex.1024
`APPLE INC. / Page 5 of 26
`
`

`

`1,0
`QO
`-....J
`0
`0
`~
`0 ....
`N
`rJJ
`c
`
`> ....
`....
`....
`
`1,,.--J
`535
`
`I
`
`QoS context
`PGW generate
`
`....
`0 ....
`Ul
`.....
`rJJ =(cid:173)
`0 ....
`~ :-: ....
`~
`
`('D
`('D
`
`-....J
`
`N
`~Cl's
`
`.i;...
`
`/_j
`530
`
`TRANSMIT CCA !AUTHORIZED OOSI
`
`525
`
`___ _)
`
`bearer QoS
`Check/modify
`
`TRANSMIT CCR !DUMMY QOSI _ r-/
`520
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`~ .....
`
`(')
`
`I
`508
`
`,,---__/
`
`I PCRF
`
`I
`506
`
`/ ___ _}
`
`I PGW
`
`FIG. 5
`
`TRANSMIT PBU [NAI, APN···l
`
`515
`
`I
`
`,----'
`
`-
`
`I
`504
`
`ePDG
`F ___ j
`
`I
`
`I,,---'
`I
`
`Attach
`
`I
`502
`
`_r ___ j
`
`I RAN
`
`Ex.1024
`APPLE INC. / Page 6 of 26
`
`

`

`1,0
`QO
`-....J
`0
`0
`~
`0 ....
`N
`rJJ
`c
`
`> ....
`....
`....
`
`.i;...
`
`....
`0 ....
`Cl's
`.....
`rJJ =(cid:173)
`0 ....
`~ :-: ....
`~
`
`('D
`('D
`
`-....J
`
`N
`~Cl's
`
`~ .....
`
`(')
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`__ _}
`655
`
`I
`
`QoS context
`PGW generates
`
`,,-----j
`650
`
`645
`
`v---✓
`I
`
`JRANSMIT CGA [AUTHORIZED QOS!
`
`TRANSMIT CCR !DEFAULT QOSJ
`
`,,--_,/
`640
`
`PGW ~oes h8\J6
`
`default QoS
`
`635
`r--j
`630
`
`,--
`/
`
`:::
`
`TRANSMIT RESPOl~SE !SUB¢msrn DEFAULT QOS]
`
`[UE !O, PGW ADORES~. APN, PlMN IOJ
`TRANSMIT UPDATE PGW ADDRESS
`
`Perform AAA interaction first
`
`context for this UE/APN,
`PGW does not ha\Je QoS
`
`625
`
`,r_/
`!
`
`TRAr~SMIT PBU !NA!, APtJ-··I
`
`I
`
`I HSS/AAA
`610
`
`I
`
`I
`.J
`608
`
`I PCRF
`
`I
`606
`
`,/
`
`I PGW
`
`FIG. 6
`
`620
`
`I
`~__/
`
`I
`604
`
`_/
`
`TRANSMIT CONNECTION REQ _
`I
`I ePDG
`602
`
`/' _ _)
`
`I RM~
`
`!
`
`Ex.1024
`APPLE INC. / Page 7 of 26
`
`

`

`1,0
`QO
`-....J
`0
`0
`~
`0 ....
`N
`rJJ
`c
`
`> ....
`....
`....
`
`.i;...
`
`....
`0 ....
`-....J
`.....
`rJJ =(cid:173)
`0 ....
`~ :-: ....
`~
`
`('D
`('D
`
`-....J
`
`N
`~Cl's
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`~ .....
`
`(')
`
`,__J
`760
`
`rnm1-1omzrn oos cormxn
`
`TRANSMIT CCA
`
`-
`
`✓--)
`755
`
`!SUBSCRIBED QQS CONTEXT!
`
`TRANSMIT CCR
`
`v--'
`I
`750
`
`authorization again
`PGW oerf orms QoS
`
`745
`
`,--)
`
`740
`
`r_j
`
`TRANSMIT RESPONSE [SUB SCRIBED QOS PROFILE]
`
`::
`
`[UE m, PGW ADORES S, APN, PLMN l□l
`TRANSMIT UPDATE PGW ADDRESS
`
`735
`
`--~;
`J
`
`PGW does not have
`
`authorized QoS
`
`___ .,./
`730
`
`725
`
`,---/
`
`IRANSMIT CCA mo AUTHORl2EO QOS]
`
`TRANSMIT CCR !NO DEFAULT OOSl
`
`TRAf~SMIT PBU INAI, APN .. ·l _
`
`j
`
`'
`710
`
`I HSS/AAA
`
`I
`708
`
`!
`
`I PCRF
`
`I
`i
`706
`
`I ?GW
`
`FIG. 7
`
`fLU
`
`/ __ _)
`
`I
`.J
`704
`
`I eP□G
`
`Attach
`
`I
`.J
`702
`
`I RAN
`
`Ex.1024
`APPLE INC. / Page 8 of 26
`
`

`

`1,0
`QO
`-....J
`0
`0
`~
`0 ....
`N
`rJJ
`c
`
`> ....
`....
`....
`
`.i;...
`
`....
`0 ....
`QO
`.....
`rJJ =(cid:173)
`0 ....
`~ :-: ....
`~
`
`('D
`('D
`
`-....J
`
`N
`~Cl's
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`~ .....
`
`(')
`
`~
`
`R
`,,--J
`810
`
`I PC~fJ I
`808
`
`TRAflSMIT CCR
`
`--I
`825
`
`i
`
`TRANSMIT PBU [NAI, APN· · · l _
`
`!j
`820
`
`-
`
`I PGW I
`
`,
`___ ,,
`806
`
`I eP□G J
`
`_j
`804
`
`Attach
`,,---j
`815
`
`FIG. 8
`
`I RAN I
`
`802
`
`j
`
`_j
`835
`
`
`
`1/
`
`__ [SUBSCRIBE□ QOS PROFILE]
`
`TRANSMIT RESP□r~SE
`
`_ _j
`830
`
`□ATA REQUEST IUE l□l _ v
`TRANSMIT SUBSCRIPTION
`
`I
`
`.---_,,. I
`845
`
`QoS context
`PGW generates
`
`TRANSMIT CCA !AUTHORIZE□ QOSJ
`
`__;.
`
`840
`
`( ___ }
`
`IUE I□, WITHOUT □EFAULT OOSJ _
`
`Ex.1024
`APPLE INC. / Page 9 of 26
`
`

`

`1,0
`QO
`-....J
`0
`0
`~
`0 ....
`N
`rJ'1
`c
`
`> ....
`....
`....
`
`....
`0 ....
`.....
`rJ'1 =(cid:173)
`0 ....
`~ :-: ....
`~
`
`.i;...
`
`1,0
`
`('D
`('D
`
`-....J
`
`N
`~Cl's
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`~ .....
`
`(')
`
`9?5
`
`/
`
`procedures for the UE, except
`
`ULI reoorting control ---~
`those for oc bearer!sl.
`MME can proceed NAS
`
`920
`
`SGW
`
`__ J
`908
`
`I
`,.__;
`906
`
`I MME
`
`FIG. 9
`
`.....--,
`
`1 _ __,1
`
`me INDICATOR, BEARER CONTE*, SENB IO/ AO DRESS, UE-AMBRJ
`
`TRAtiSMIT $1 REQUEST
`
`;
`v __ ;
`I 915
`
`me 1rurncArnR. BEARER cmmxT.
`
`TRANSMIT X2 ACK
`
`UE-AMBRJ
`
`.~/
`I 910
`I SeNB I
`
`9□4
`
`!
`
`c:.--J
`
`me 1~irncArnR, BEARER cmmxT.
`
`UE-AMBRJ
`
`TRANSMIT X2 REQUEST
`
`I MeNB I
`
`902
`
`( __ )
`
`I
`.
`TRANSMIT MODIFY BEARER REQUEST
`
`_,_1
`I. 935
`
`_,___;
`
`~ .
`
`BEARER CONTEXTl
`
`SENB 10/AODRESSJ
`
`TRANSMIT X2 REQUEST
`me INDICATOR. BEARER CONTE* SGW ID/ADORESS, LIE-AMBRI
`
`___ _;
`I 950
`
`--~/
`
`I 945
`
`me 1NrncArnR. BEARER CONTEXT,
`
`TRANSMIT X2 RESPONSE
`
`UE-AMBRJ
`
`me INDICATOR, BEARER CONTEXT,
`
`UE-AMBRJ
`
`~
`
`940
`
`TRANSMIT S1 ACK
`
`RESPmm me 1rm1cATOR,
`TRANSMIT MODIFY BEARER
`me 1rJ□1GATOR, BEARER CONTEXT, I 930
`
`Ex.1024
`APPLE INC. / Page 10 of 26
`
`

`

`Patent Application Publication Mar. 16, 2017 Sheet 10 of 14 US 2017/0078911 Al
`
`FIG. 10
`
`I MeNB
`
`I
`
`I
`
`SeNB
`
`I
`
`TRANSMIT X2 REQUEST
`[BEARER CONTEXT, DATA FORWARD INDICATOR, ADDRESS!
`
`TRAl~SMIT X2 RESPOl~SE
`!BEARER co~mxr, DATA FORWARD INDICATOR,
`ADDRESS. SN STATUS]
`
`PERFORM USER DATA FORWAR□ 1rm
`
`-
`
`1010
`- v---"'
`-
`
`I
`
`1015
`___ ,,
`
`I
`
`1020
`I
`,,---
`
`Ex.1024
`APPLE INC. / Page 11 of 26
`
`

`

`Patent Application Publication Mar. 16, 2017 Sheet 11 of 14
`
`US 2017/0078911 Al
`
`FIG. 11
`
`Source
`MeNB
`
`1104
`I SeNB
`I
`
`_________ ,-
`
`1106
`
`I
`
`r---
`
`Target
`Mer~B
`
`TRAt~SMIT X2 REQUEST
`[BEARER cormXT,
`DATA FORWARD INDICATOR, ADDRESS] ~ 1 O
`TRANSMIT X2 RESPONSE
`[BEARER CONTEXT, DATA FORWARD
`lt~DICATOR, ADDRESS, SN STATUSl
`
`1;2,15
`
`TRANSMIT 2 REQUEST
`[BEARER cmmxr, IJATA FORWARD iN[llCATOR, ADIJRESS, S~l STATUS]
`
`PERFORM USER DATA FORWARDING
`
`1120
`
`✓-~_)25
`
`Ex.1024
`APPLE INC. / Page 12 of 26
`
`

`

`1,0
`QO
`-....J
`0
`0
`~
`0 ....
`N
`rJJ
`c
`
`> ....
`....
`....
`
`.i;...
`
`....
`0 ....
`N
`....
`.....
`rJJ =(cid:173)
`0 ....
`~ :-: ....
`~
`
`('D
`('D
`
`-....J
`
`N
`~Cl's
`
`,--'
`I
`1235
`
`TRANSMIT GTP ACK
`
`30
`
`correct charging record
`
`___ _/
`1225
`
`!BEARER ID, DEU\IERY REPORT]
`
`TRANSMIT GTP MESSAGE
`
`-
`
`TRANSMIT S1 ACK
`,-)
`1240
`
`1220
`
`TRANSMIT 81 MESSAGE r _ _}
`
`[BEARER ID, OE 1\/ERY REPORT]
`
`1215
`
`,--j
`
`1210
`
`,--_j
`
`RESPONSE !DELIVERY REPORT!
`TRANSMIT RESOURCE RELEASE
`
`TRANSMIT RESOURCE RELEASE REQUEST_
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`~ .....
`
`(')
`
`I
`
`1208
`
`SGW/PGW
`)
`
`I
`
`I
`1206
`
`)
`
`MME
`
`I
`
`I
`1204
`
`I seNB
`
`I
`1202
`
`I MeNB
`
`FIG. 12
`
`Ex.1024
`APPLE INC. / Page 13 of 26
`
`

`

`Patent Application Publication Mar. 16, 2017 Sheet 13 of 14 US 2017/0078911 Al
`
`FIG. 13
`
`TRAi~SCEIVER UNIT
`
`MEMORY UNIT
`
`CONTROL UNIT
`
`Ex.1024
`APPLE INC. / Page 14 of 26
`
`

`

`Patent Application Publication Mar. 16, 2017 Sheet 14 of 14 US 2017/0078911 Al
`
`FIG. 14
`
`1410
`
`WIRED/WIRELESS
`COMMUNICATION UNIT
`
`CONTROL UNIT
`
`MEMORY UNIT
`
`Ex.1024
`APPLE INC. / Page 15 of 26
`
`

`

`US 2017/0078911 Al
`
`Mar. 16, 2017
`
`1
`
`METHOD AND APPARATUS FOR
`GENERATING CONNECTION IN WIRELESS
`COMMUNICATION SYSTEM
`
`TECHNICAL FIELD
`
`[0001] An embodiment of the present disclosure relates to
`a method and apparatus for a terminal to generate a con(cid:173)
`nection with a core network in a wireless communication
`system, and more particularly, to a method and apparatus for
`generating a connection for a terminal which accesses a
`3GPP (3rd Generation Partnership Project) network through
`a non-3GPP network.
`
`BACKGROUND ART
`
`[0002] Typically the wireless communication system was
`developed for providing a voice service while guaranteeing
`user's activity. The wireless communication system is then
`expanding gradually its service region to a data service as
`well as the voice service and is now developed to the extent
`capable of offering a high-speed data service. The currently
`available wireless communication system, however, con(cid:173)
`fronts a shortage of resources and users' demands for much
`higher-speed service, so that a more advanced wireless
`communication system is needed.
`[0003] As one of next generation wireless communication
`systems developed to meet these needs, LTE (Long Term
`Evolution) was standardized in the 3GPP. LTE is technology
`for realizing high-speed packet based communication hav(cid:173)
`ing the maximum transfer rate of about 100 Mbps. For this,
`some schemes are under discussion, for example, a scheme
`of reducing the number of nodes deployed on a communi(cid:173)
`cation channel by simplifying the architecture of a network,
`a scheme of maximally rendering a wireless protocol close
`to a wireless channel, and the like.
`[0004]
`In order to increase the degree of freedom in the
`configuration of an operator's network, the LTE system
`supports interworking with an access network ofnon-3GPP,
`which is not standardized in the 3GPP, as well as E-UTRAN
`which uses the LTE transfer technology for a RAN (Radio
`Access Network) which interworks with a core network.
`Although various ways of interworking between a non-
`3GPP access network and an LTE core network can be used,
`an ePDG (Evolved Packet Data Gateway) is normally used
`for interworking between the non-3GPP access network and
`the LTE core network.
`
`DISCLOSURE OF INVENTION
`
`Technical Problem
`
`[0005]
`In case of using a protocol such as a PMIP (Proxy
`Mobile IP) for supporting the mobility of user equipment, it
`is not possible to deliver default QoS information about user
`equipment to the core network in the LTE network. There(cid:173)
`fore, since an LTE core network node may not generate a
`PDN connection based on the default QoS information, a
`method and apparatus for solving this is required.
`
`Solution to Problem
`
`[0006]
`In order to solve the above technical problem, a
`signal transmission and reception method in a packet data
`network gateway (PGW) of a mobile communication system
`according to an embodiment of this disclosure includes steps
`of receiving a first request message containing an identifier
`
`of user equipment and being associated with a packet data
`network connection; transmitting a second request message
`to a policy and charging rules function (PCRF) server, based
`on the received first request message; and if quality of
`service (QoS) related information is contained in a response
`message received from the PCRF in response to the second
`request message, performing a control associated with the
`packet data network connection, based on the QoS related
`information.
`[0007] A signal transmission and reception method in a
`policy and charging rules function (PCRF) server of a
`mobile communication system according
`to another
`embodiment of this disclosure includes steps of receiving a
`request message associated with a packet data network
`connection from a packet data network gateway (PGW); and
`if quality of service (QoS) related information associated
`with the packet data network connection is not contained in
`the request message, transmitting a response message con(cid:173)
`taining QoS information associated with the packet data
`network connection to the PGW in response to the request
`message.
`[0008] A packet data network gateway (PGW) of a mobile
`communication system according to another embodiment of
`this disclosure includes a transceiver unit that transmits and
`receives a signal; and a control unit that controls the trans(cid:173)
`ceiver unit to receive a first request message containing an
`identifier of user equipment and being associated with a
`packet data network connection, controls the transceiver unit
`to transmit a second request message to a policy and
`charging rules function (PCRF) server, based on the received
`first request message, and if quality of service (QoS) related
`information is contained in a response message received
`from the PCRF in response to the second request message,
`performs a control associated with the packet data network
`connection, based on the QoS related information.
`[0009] A policy and charging rules function (PCRF) server
`of a mobile communication system according to another
`embodiment of this disclosure includes a transceiver unit
`that transmits and receives a signal; and a control unit that
`controls the transceiver unit to receive a request message
`associated with a packet data network connection from a
`packet data network gateway (PGW), and if quality of
`service (QoS) related information associated with the packet
`data network connection is not contained in the request
`message, controls the transceiver unit to transmit a response
`message containing QoS information associated with the
`packet data network connection to the PGW i n response to
`the request message.
`
`Advantageous Effects of Invention
`
`[0010] According to the present invention, in the wireless
`communication system using PMIP, it is possible to generate
`a PDN connection based on the default QoS. Specifically,
`according to an embodiment of the present disclosure, when
`user equipment using a non-3GPP network accesses the
`3GPP network, it is possible to generate a PDN connection
`based on QoS by generating a connection for the user
`equipment and then delivering QoS information associated
`with the connection.
`
`BRIEF DESCRIPTION OF DRAWINGS
`[0011] FIG. 1 is a diagram illustrating a structure of a
`communication system according to an embodiment of the
`present disclosure.
`
`Ex.1024
`APPLE INC. / Page 16 of 26
`
`

`

`US 2017/0078911 Al
`
`Mar. 16, 2017
`
`2
`
`[0012] FIG. 2 is a diagram illustrating a connection estab(cid:173)
`lishment method according to an embodiment of the present
`disclosure.
`[0013] FIG. 3 is a diagram illustrating a connection estab(cid:173)
`lishment method according to an embodiment of the present
`disclosure.
`[0014] FIG. 4 is a diagram illustrating a connection estab(cid:173)
`lishment method according to another embodiment of the
`present disclosure.
`[0015] FIG. 5 is a diagram illustrating a connection estab(cid:173)
`lishment method according to another embodiment of the
`present disclosure.
`[0016] FIG. 6 is a diagram illustrating a connection estab(cid:173)
`lishment method according to another embodiment of the
`present disclosure.
`[0017] FIG. 7 is a diagram illustrating a connection estab(cid:173)
`lishment method according to another embodiment of the
`present disclosure.
`[0018] FIG. 8 is a diagram illustrating a connection estab(cid:173)
`lishment method according to another embodiment of the
`present disclosure.
`[0019] FIG. 9 is a diagram illustrating a method for
`exchanging information between respective network entities
`in case a dual connectivity state modification is needed
`according to an embodiment of the present disclosure.
`[0020] FIG. 10 is a diagram illustrating a procedure of
`signal transmission and reception between ENBs in a han(cid:173)
`dover according to an embodiment of the present disclosure.
`[0021] FIG. 11 is a diagram illustrating a procedure of
`signal transmission and reception between ENBs in a han(cid:173)
`dover according to another embodiment of the present
`disclosure.
`[0022] FIG. 12 is a diagram illustrating a signal transmis(cid:173)
`sion and reception procedure for modifying information
`associated with charging which occurs in a handover accord(cid:173)
`ing to an embodiment of the present disclosure.
`[0023] FIG. 13 is a block diagram illustrating an internal
`structure of user equipment according to an embodiment of
`the present disclosure.
`[0024] FIG. 14 is a block diagram illustrating an internal
`structure of an entity including a RAN according to an
`embodiment of the present disclosure.
`
`MODE FOR THE INVENTION
`
`[0025] Hereinafter, embodiments of the present invention
`will be described with reference to the accompanying draw(cid:173)
`ings.
`[0026]
`In the following, technical contents well known in
`the art and having no direct relation to this invention may not
`be described or illustrated in detail to avoid obscuring the
`subject matter of the present invention.
`[0027] Similarly, through the drawings, some elements
`may be exaggerated, omitted or schematically depicted. The
`same or similar reference numerals denote corresponding
`features consistently.
`[0028] Advantages and features of this invention and
`methods for achieving them will become clear with refer(cid:173)
`ence to the following embodiments together with drawings.
`The present invention is, however, not limited to the
`embodiments set forth herein and may be embodied in many
`different forms. Rather, the disclosed embodiments are pro(cid:173)
`vided so that this disclosure will be thorough and complete,
`and will fully convey the scope of this invention to those
`skilled in the art as defined by the appended claims.
`
`[0029]
`It will be understood that each block of the flow(cid:173)
`chart illustrations, and combinations of blocks in the flow(cid:173)
`chart illustrations, can be implemented by computer pro(cid:173)
`gram instructions. These computer program instructions can
`be provided to a processor of a general purpose computer,
`special purpose computer, or other programmable data pro(cid:173)
`cessing apparatus to produce a machine, such that the
`instructions, which are executed via the processor of the
`computer or other programmable data processing apparatus,
`create means for implementing the functions specified in the
`flowchart block or blocks. These computer program instruc(cid:173)
`tions may also be stored in a computer usable or computer(cid:173)
`readable memory that can direct a computer or other pro(cid:173)
`grammable data processing apparatus to function in a
`particular manner, such that the instructions stored in the
`computer usable or computer-readable memory produce an
`article of manufacture including instruction means that
`implement the function specified in the flowchart block or
`blocks. The computer program instructions may also be
`loaded onto a computer or other programmable data pro(cid:173)
`cessing apparatus to cause a series of operational steps to be
`performed on the computer or other programmable appara(cid:173)
`tus to produce a computer implemented process such that the
`instructions that are executed on the computer or other
`programmable apparatus provide steps for implementing the
`functions specified in the flowchart block or blocks.
`[0030] And each block of the flowchart illustrations may
`represent a module, segment, or portion of code, which
`comprises one or more executable instructions for imple(cid:173)
`menting the specified logical function(s). It should also be
`noted that in some alternative implementations, the func(cid:173)
`tions noted in the blocks may occur out of the order. For
`example, two blocks shown in succession may in fact be
`executed substantially concurrently or the blocks may some(cid:173)
`times be executed in the reverse order, depending upon the
`functionality involved.
`[0031] The term "unit", as used herein, may refer to a
`software or hardware component or device, such as FPGA
`or ASIC, which performs certain tasks. A unit may be
`configured to reside on an addressable storage medium and
`configured to execute on one or more processors. Thus, a
`module or unit may include, by way of example, compo(cid:173)
`nents, such as software components, object-oriented soft(cid:173)
`ware components, class components and task components,
`processes, functions, attributes, procedures, subroutines,
`segments of program code, drivers, firmware, microcode,
`circuitry, data, databases, data structures, tables, arrays, and
`variables. The functionality provided for in the components
`and modules/units may be combined into fewer components
`and modules/units or further separated into additional com(cid:173)
`ponents and modules.
`[0032] Additionally, well known functions and configura(cid:173)
`tions may not be described or illustrated in detail to avoid
`obscuring the subject matter of the present invention.
`[0033] Although embodiments of the present invention
`will be described hereinafter by mainly targeting a basic
`3GPP LTE system, the essential concept of this invention
`may be favorably applied to any other communication/
`computer system having a similar technical background and
`system configuration without departing from the scope of
`this invention as will be apparent to those skilled in the art.
`[0034] For example, the disclosed technique for the LTE
`system may be also applied to the UTRAN/GERAN system
`having a similar system structure. In this case, an ENB
`
`Ex.1024
`APPLE INC. / Page 17 of 26
`
`

`

`US 2017/0078911 Al
`
`Mar. 16, 2017
`
`3
`
`(RAN node) may be replaced by RNC/BSC, an S-GW may
`be omitted or included in SGSN, and a P-GW may corre(cid:173)
`spond to GGSN. Also, the concept of bearer in the LTE
`system may correspond to PDP context in the UTRAN/
`GERAN system.
`[0035] FIG. 1 is a diagram illustrating a structure of a
`communication system according to an embodiment of the
`present disclosure. Depending on an embodiment, the com(cid:173)
`munication system may be a mobile communication system
`based on LTE.
`[0036] Referring to FIG. 1, as shown, a wireless access
`network of the LTE mobile communication system may be
`formed of an evolved Node B (EUTRAN, hereinafter
`referred to as ENB or Node B) 130, an MME (Mobility
`Management Entity) 150, and an S-GW (Serving-Gateway)
`140.
`[0037] User equipment (hereinafter referred to as UE) 100
`may access an external network through the ENB 130, the
`S-GW 140, and a P-GW (PDN-Gateway) 160. In order to
`allow the UE to transmit or receive data through the P-GW,
`a PDN connection should be generated and one PDN
`connection may include one or more EPS bearers.
`[0038] An AF (Application Function) 110 is an apparatus
`that exchanges application-related information with a user at
`the level of application.
`[0039] A PCRF 120 is an apparatus that controls a user's
`policy associated with QoS (Quality of Service). A PCC
`(Policy and Charging Control) rule corresponding to the
`above policy is delivered and applied to the P-GW 160.
`[0040] The ENB 130 is an RAN (Radio Access Network)
`node and corresponds to RNC of a UTRAN system and to
`BSC of a GERAN system. The ENB 130 is connected to the
`UE 100 in a radio channel and performs a role similar to that
`of the existing RNC/BSC.
`[0041] Since all user traffics including real-time services
`such as a VoIP (Voice over IP) are offered through a shared
`channel in LTE, an apparatus for collecting status informa(cid:173)
`tion of the UEs 100 and performing scheduling is needed.
`The ENB 130 is in charge of this.
`[0042] The S-GW 140 is an apparatus that offers a data
`bearer, and creates or removes the data bearer under the
`control of the MME 150.
`[0043] The MME 150 is an apparatus that performs vari(cid:173)
`ous control functions, and a single MME 150 may be
`connected with a plurality of ENBs.
`[0044] The PCRF 120 is an entity that generally controls
`QoS and charging with regard to traffic.
`[0045] Meanwhile, as mentioned above, the LTE system
`supports interworking with any access network other than
`3GPP as well as E-UTRAN. If any non-3GPP access net(cid:173)
`work is interworked, the non-3GPP access network may be
`connected to the PGW 160 directly or through an additional
`ePDG. For processing subscriber information or authenti(cid:173)
`cation with regard to the non-3GPP access network, an HSS
`(Home Subscriber Server) 170 and an AAA (Authentication,
`Authorization and Accounting) server may exchange infor(cid:173)
`mation with each other and may also be realized as a signal
`entity. The term ePDG is exemplarily used for convenience.
`Even in case the non-3GPP access network is connected to
`the PGW directly or connected through any node, e.g., the
`S-GW, other than ePDG, an embodiment disclosed herein
`may be applied without any considerable modification.
`
`[0046] FIG. 2 is a diagram illustrating a connection estab(cid:173)
`lishment method according to an embodiment of the present
`disclosure.
`[0047] Referring FIG. 2, this connection establishment
`method is offered for an RAN 202 that accesses a core
`network through an ePDG 204.
`[0048] This embodiment may indicate a procedure of
`exchanging signals between the RAN 202, the ePDG 204, a
`PGW 206, and a PCRF 208, and a procedure of requiring UE
`to register at an EPC (Evolved Packet Core) through a
`non-3GPP network including the RAN 202 or to generate a
`PDN connection.
`[0049]
`In this embodiment, the RAN may include 1 xENB
`using CDMA or an AP (Access Point) using a wireless LAN.
`[0050] At step 210, the RAN 202 may deliver a request
`transmitted by UE to the ePDG 204. Specifically, this
`request of the UE may be delivered to the ePDG through the
`non-3GPP RAN.
`[0051] At step 215, the ePDG may transmit a PBU (Proxy
`Binding Update) message to the PGW. In an embodiment,
`the PBU message may contain at least one of ID (NAI
`(Network Access Identifier)) of the UE and anAPN (Access
`Point Name) through which the UE will receive a service. At
`this time, the PGW 206 fails to receive a default EPS bearer
`QoS information (hereinafter referred to as default QoS)
`about the UE through the PBU message received from the
`ePDG 204. Therefore, the PGW 206 has no QoS parameter
`to be used when the requested PDN connection is generated.
`[0052] At step 220, the PGW 206 may transmit a CCR
`(Credit Control Request) message to the PCRF 208. Spe(cid:173)
`cifically, when transmitting a request message ( e.g., the CCR
`message) to the PCRF 208, the PGW 206 transmits the
`message without inserting a QoS parameter.
`[0053] At step 225, the PCRF 208 may transmit a CCA
`(Credit Control Answer) message to the PGW 206. At this
`time, because of failing to receive the QoS request from the
`PGW 206, the PCRF 208 may not insert QoS information
`authorized by the PCRF 208 when sending a response
`message (e.g., the CCA message).
`[0054] Therefore, at step 230, the PGW 206 may have a
`problem that there is no QoS information to be applied to the
`generation of a PDN connection.
`[0055]
`In order to solve this problem, one embodiment of
`the present disclosure proposes that the non-3GPP RAN
`receives subscription information about UE from the AAA
`server and then delivers the default QoS information, among
`the subscription information, to the PGW through the ePDG.
`The ePDG may use the PBU message so as to deliver the
`default QoS, received from the non-3GPP RAN, to the
`PGW.
`[0056] FIG. 3 is a diagram illustrating a connection estab(cid:173)
`lishment method according to an embodiment of the present
`disclosure.
`[0057] Referring to FIG. 3, this embodiment may indicate
`a procedure of exchanging signals between a RAN 302, an
`ePDG 304, a PGW 306, a PCRF 308, and a HSS/AAA 310.
`[0058]
`In this embodiment, when UE accesses the EPC via
`the non-3GPP network, the UE may undergo an authenti(cid:173)
`cation procedure.
`[0059] At step 315, authentication information about the
`UE is delivered from the HSS/AAA 310 to the non-3GPP
`access network (the RAN 302 in this embodiment). Depend(cid:173)
`ing on an embodiment, in this process, the HSS/AAA 310
`may deliver default QoS information about the UE to the
`
`Ex.1024
`APPLE INC. / Page 18 of 26
`
`

`

`US 2017/0078911 Al
`
`Mar. 16, 2017
`
`4
`
`non-3GPP access network. In an embodiment, the received
`default QoS information about the UE may be determined
`on the basis of subscription information.
`[0060] At step 320, the non-3GPP access network 302 that
`receives the authentication information containing the
`default QoS information about the UE may deliver a mes(cid:173)
`sage requested by the UE to the ePDG 304 with the received
`default QoS information.
`[0061] At step 325, the ePDG 304 may send a PBU (Proxy
`Binding Update) message to the PGW 306. In an embodi(cid:173)
`ment, the PBU message may contain at least