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1 19 IP A study on Common Channel Signaling network architecture for IP network

3 IP IP (NGN) 2 IP (CSN) (UMN) CSN 4 IP IP UMN i

5 Abstract A study on Common Channel Signaling network architecture for IP network Yuto Tokuhiro In recent years, as the development of IP network has achieved the expansion and speed-up of the network, the number of routes in IP network increases and the network equipments are sophisticated. In addition, the coming introduction of the Next Generation Network (NGN) would make the service control complex. In this paper, the new network architecture to consist of Control Signal Network (CSN) and User Message Network (UMN) like No.7 CCS network configuration is proposed. The CSN network requirements consist of the stability, reliability, scalability and flexibility. To assure the stability, separate IP networks scheme is adopted. To assure the reliability, CSN is given the plural links with redundancy. To assure the scalability, CSN could be enlarged with independence to UMN. To assure the flexibility, CSN is constituted based on IP technology. As the result of the experiment, the load to the User Message traffic could reduce compared with that before applying the proposal architecture. According to the avaible bandwidth in UMN, the more User Message traffic could be transferred than the traffic before applying the proposal architecture. Moreover, the Control Signal traffic could be also transferred stable by specifying the sufficient bandwidth which is the Control Signal traffic sum bigger than a threshold amount. key words No.7 CCSControl signalnetwork separationnetwork requirements iii

7 No.7 Common Channel Signaling v

8 CSN CSR IP CS DCL vi

9 vii

11 IPv IPv NGN IP No.7 CCS PSTN N = CSN UMN CSN CSR IP IP CS VoIP VoIP ix

12 3.5 DCL x

13 3.1 IP TV SIP N = 30 OSPFv N = 40 OSPFv N = 50 OSPFv xi

15 1 IP IP IP 1.4 [1] Gbps NTT (NGN) [2] (ISPs) 10Gbps MPLS (Multi-Protocol Label Switching) MPLS NGN [3] ISP IP IP IP IPv4 1

16 1 (Gbps) Gbps (2007.5) 636.6Gbps ( ) Gbps (2006.5) 468.0Gbps ( ) 424.5Gbps (2005.5) 323.6Gbps ( ) 303.2Gbps ( ) 269.4Gbps (2004.9) (*) bits IP IPv6 128bits IP IPv [4]IPv6 1.3 IPv6 IPv4 [5] NGN SIP (Session Initiation Protocol) SIP NGN [6] MPLS NGN 2

17 1.2 IPv4 1.3 IPv6 3

18 1 IPv6 [7][8]NGN IP 1.1 IP 2 IP 3 IP IP 4 4

19 2 2.1 IP 2.2 IP (ISP) ISP ISP IX (Internet exchange) 2.1 IP [1] ISP ISP NGN NGN 2.2 NGN NGN 5

20 2 2.1 ANI IN UNI RACF ( ) NNI 2.2 NGN NGN IP 2.3 [6] 6

21 2.3 CSN UMN CSN CSN UMN 2.3 IP 2.3 IP 3 SNMP (Simple Network Management Protocol) 7

22 2 VoIP (Voice over IP) IP SIP (Session Initiation Protocol) SIP IP IP (PSTN) IP PSTN (Public Switched Telephone Network) [9] (MFS) 2.4 [9]IP 8

23 2.4 IP IP PSTN PSTN 2.4 No.7 Common Channel Signaling [9] CCITT No.6 CCS No.7 CCS No.7 CCS No.7 CCS

24 2 PSTN No.7 CCS PSTN IP IP 2.5 No.7 CCS 2.5 PSTN 2.6 [10]

25 PSTN [9] 2.6 A B 2.7 SEP (Signal End Point) STP A B 11

26 2 [9] PSTN IP (CSN) (UMN) IP CSN UMN CSN UMN CSN 2.8 CSN IP SEP A B STP 8 12

27 2.6 IP TCP/IP PSTN IP NGN 13

28 IP NGN IP CSN CSN UMN CSN UMN 2.7 CSN 4 14

29 CSN UMN CSN UMN N a an N + a an a N CSN N + a an UMN 15

2 CSN CSN N 1 N + 1(N = 1, 2, 3,, n) N = 1 2.

30 2 CSN CSN N 1 N + 1(N = 1, 2, 3,, n) N = N = IP CSN UMN IP CSN TCP/IP 16

31 2.8 CSN IP CSN CSN IP CSN UMN 2.9 N = CSN UMN IP CSN UMN CSN UMN STP CSR (Control Signal Router) CSR DCL (Data to Control Link) 2.8 CSN IP IP CSN TCP/IP UMN 17

32 2 CSN A B A B CSN 2.10 A CSR 2.10 CSN OSPF (Open Shortest Path First) RIP (Routing Information Protocol) CSN DCL CSR CSN 18

33 2.8 CSN IP DCL TCP/UDP TCP/UDP DCL CSR IP CSR CSN IP IP CSR CSN CSR CSR CSR IP CSN 19

2 CSR CSR IP CSN UMN CSR IP 2.12 IP address CSR Number 192.10.5.10 192.10.6.10 192.10.5.10 192.10.7.10 192.10.5.10 192.10.6.10 192.10.7.10 192.10.6.10 192.10.7.10 2.

34 2 CSR CSR IP CSN UMN CSR IP 2.12 IP address CSR Number CSR IP 1 CSR CSR CSR CSR IP CSR CSR IP 2 IP OSPFv2 RIP [11] 20

35 2.8 CSN (TTL) 1 CSR TTL TTL IP CSR CSR IP IP IP IP CS (Control Signal) IP CS CS OSI CS CS CS CS CSR UMN IP CSR 21

36 2 CSN CS CSR CSR CSR CSR TTL 8bits IPv4 4 IPv6 Hop Limit 8bits CSN 24bits UMN CSN CSR (ECSR) CSR CS CSR CSR CSR CS IP IP IP UMN

37 2.8 CSN

39 QualNet[12] DCL 25

40 3 IP TV IP VoIP (Voice over IP) NGN SIP [6] VoIP IP TV 3 IP TV 3.1 TV NGN TV TV 3.1 IP TV IP (ch) TV (ch) VoIP 3 A B VoIP 3.1 Gigabit Ethernet VoIP SIP VoIP Generator HTTP HTTP Generator 26

41 3.2 検証方法㻳㼑㼚㼑㼞㼍㼠㼛㼞㼟㻾㼑㼏㼑㼕㼢㼑㼞㼟㻭㻮㻾㼛㼡㼠㼑㼞㼂㼛㻵㻼㻔㻵㻼㟁ヰ㻕㻿㼣㼕㼠㼏㼔㼕㼚㼓㻙㻴㼡㼎㼂㼛㻵㻼㻔㼀㼂㟁ヰ㻕㻴㼀㼀㻼図 3.1 アーキテクチャ適用前の VoIP アプリケーションモデルたトラヒックの受信端末に VoIP Receiver と HTTP Receiver を用意しそれぞれをスイッチングハブで接続させるスイッチングハブ間はルータで接続させる検証 2 検証 2 ではアーキテクチャ適用後の VoIP アプリケーションモデルを想定し 3 種類の比率それぞれにおいてルータ A B 間におけるリンクの最大帯域使用率を測定するアーキテクチャ適用後の VoIP アプリケーションモデルを図 3.2 に示す㻯㻿㻺㻾㼑㼏㼑㼕㼢㼑㼞㼟㻳㼑㼚㼑㼞㼍㼠㼛㼞㼟㻭㻮㼁㻹㻺㻾㼛㼡㼠㼑㼞㼂㼛㻵㻼㻔㻵㻼㟁ヰ㻕㻿㼣㼕㼠㼏㼔㼕㼚㼓㻙㻴㼡㼎㼂㼛㻵㻼㻔㼀㼂㟁ヰ㻕㻯㻿㻾㻌㻦㻌㻯㼛㼚㼠㼞㼛㼘㻌㻴㼀㼀㻼㻌㻌㻌㻌㻌㻌㻌㻌㻌㻿㼕㼓㼚㼍㼘㻌㻾㼛㼡㼠㼑㼞㻰㻯㻸㻌㻦㻌㻰㼍㼠㼍㻌㼠㼛㻌㻯㼛㼚㼠㼞㼛㼘㻌㻸㼕㼚㼗図 3.2 アーキテクチャ適用後の VoIP アプリケーションモデル 27

42 3 1 CSN Generator Reciever DCL 100Mbps 100Mbps 1000Mbps 3 DCL VoIP HTTP VoIP SIP OSPFv2 SNMP MPLS (Multi-Protocol Label Switching) LDP (Label Distribution Protocol) 3.2 VoIP G.711 VoIP [13] G.711 G Bytes IP 20BytesUDP 8BytesRTP 12Bytes 200Bytes 80kbps 1000ch 28

43 IP TV HTTP() HTTP(Ack) (Bytes) (pps) (kbps) (ch) (kbps) Mbps TV H Bytes IP 20BytesUDP 8BytesRTP 12Bytes 410Bytes 164kbps 100ch200ch400ch 16.4Mbps32.8Mbps 65.6Mbps HTTP HTTP Ack [13]60Bytes Ack 1500Bytes 40pps (packet per second) VoIP SIP OSPFv2 N = TV SIP 29

44 3 3.3 N = 30 OSPFv2 3.4 N = 40 OSPFv2 3.5 N = 50 OSPFv SIP IP TV (Bytes) (pps) (kbps) (ch) (kbps) IP SIP 15Bytes IP 20BytesUDP 8Bytes 43Bytes SIP TCP/UDP SIP NGN UDP UDP OSPFv2 IP 20BytesOSPF 24Bytes [14] Hello DD (Database Description) LSR (Link State Request) LSU (Link State Update) LSAck (Link State Acknowledgement) 4 LSU 4 Router-LSA Network-LSA Summary-LSAAS AS-external AS-external-LSA 30

45 N = 30 OSPFv2 (Bytes) (pps) (kbps) Hello DD LSR LSAck LSU Router-LSA Network-LSA Summary-LSA AS-external-LSA N = 40 OSPFv2 (Bytes) (pps) (kbps) Hello DD LSR LSAck LSU Router-LSA Network-LSA Summary-LSA AS-external-LSA

46 3 3.6 N = 50 OSPFv2 (Bytes) (pps) (kbps) Hello DD LSR LSAck LSU Router-LSA Network-LSA Summary-LSA AS-external-LSA [14] 3.7 (Bytes) (pps) (kbps) SNMP MPLS-LDP Hello Session Initialization Advertisement Notification SNMP IP 20BytesUDP 8Bytes [11] 202Bytes 32

47 Bytes MPLS LDP LSR (Label Switched Router) Hello LSR Session Initialization Advertisement Notification 4 [16]Hello Hello UDP TCP Hello IP 20BytesUDP 8Bytes 20Bytes IP 20BytesTCP 24Bytes 20Bytes IP 3.3 Eternet TCP/UDP 30% [16] IP T V = % Ethernet NGN TV 400ch 2 33

48 Ethernet %

49 % 76.3%71.9%68.8% 23.7%28.1%31.2%Ethernet UMN DCL UMN 2 IP TV CSN DCL 100Mbps 100Mbps 1000Mbps Ethernet DCL Ethernet Mbps Mbps Mbps DCL 200Mbps200Mbps300Mbps 35

50 IP T V = %DCL 200Mbps CSN IP T V = %DCL 200Mbps CSN IP T V = %DCL 300Mbps CSN 3 UMN IP 1000ch + 90ch TV 400ch + 40ch OSPFv2 80% SIP TV 1015% SIP OSPFv2 VoIP 36

51 4 4.1 IP IP IP DCL UMN UMN 4.2 CSN 37

52 4 CSN CSN 38

53 2 39

55 [1] [2] NGN [3] NGN(Next Generation Network) [4] AS65000 BGP Routing Table Analysis Report [5] AS1221 IPv6 BGP Table Data [6] NTT ITU-T NGN [7] IP p [8] Yuto TOKUHIROYuta KINOSHITA and Kazunori SHIMAMURAA study on application of Common Channel Signaling network to IP networkneine 07 pp [9] pp.3-4pp [10] STP NTT R&D Vol.50 No [11] Philip Miller TCP/IP p.200p.418 p [12] SCALABLE NETWORK TECHNOLOGY 41

56 [13] IP [14] pp [15] MPLS [16] RSVP WFQ

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