휴대인터넷. 2.3GHz Portable Internet - WiBro - Changhoi Koo Samsung Electronics. Co. November, 5, 2004
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1 휴대인터넷 2.3GHz Portable Internet - WiBro - November, 5, 2004 Changhoi Koo (chkoo@samsung.com) Samsung Electronics. Co.
2 Contents Introduction to WiBro Systems Definition Positioning System Specification Protocol Stack Network Reference Model Implementation of WiBro Network Key Requirements Network Elements Network Configurations and Comparison WiBro Network Architecture A trend of Standardization TTA PG302 : Service Network WG IEEE802.16f/g 2/7
3 Introduction to WiBro Systems 3/7
4 Definition Wireless Broadband : WiBro 3.5G(Generation) Wireless Mobile Communication System High-speed Portable Internet Based on TTA PG302 and IEEE802.16d/e Mobility High Data Rate WiBro Low Cost Anytime, Anywhere 4/7
5 Positioning WiBro in aperture between 3G and 4G Mobility High Mobility The next Generation Multimedia Service Cellular PCS (2G) IMT2000 (3G) WiBro Fixed WLL 2.4GHz Wireless LAN ADSL/HFC/B-WLL User Data Rate 5/7
6 System Specification TDMA -> CDMA -> OFDM(A)? Toward 4G Mobile Communication Systems Major System Parameters Radio Access Requirement Duplexing Frequency Reuse TDD 1 Factor Multiple Access Channel BW OFDMA 8.75 [MHz][ Mobility 60 [Km/h][ Service Coverage 1 [Km][ Spectral Efficiency [bps/hz/cell(sector)] Max. DL / UL = 6 / 2 Aver. DL / UL = 2 / 1 Handoff 150 [ms][ Throughput (per user) Max. DL / UL = 3 / 1 [Mbps] Min. DL / UL = 512 / 128 [Kbps] 6/7
7 Protocol Stack Physical Layer and MAC layer Upper layer functionalities for Mobility Core network interface WiBro e Mobility (HO, (HO, Sleep mode, Idle Idle mode) SCa SCa MAC MAC OFDM OFDMA a/d Scalability, H-ARQ, MIMO etc. 7/7
8 Network Reference Model Access Network (PSS-RAS) Core Network(RAS-ACR, ACR-ACR) Public IP Network Operator s IP Network HA AAA ACR ACR ACR : Access Control Router RAS : Radio Access Station RAS RAS RAS RAS PSS : Personal Subscriber Station PSS PSS PSS PSS 8/7
9 Implementation of WiBro Systems 9/7
10 Key Requirements Requirements Flexible Network Architecture for multiple market segments (Scalability in Cost, Coverage and Capacity) Service Compatibility between networks and devices Better Service Quality 3G Inter-working Current Design Directions Public Macro-cell Mobility & Coverage driven Public Hot-zone Throughput & Service driven Private (Home/Enterprise) Cost, Easy to deploy Common User Authentication and security Capability and Preference Negotiation in L2 level Voice Service - Seamless Active Handoff (break time < 40msec) - Idle mode/paging, FCS support Data Service - High throughput & QoS support - Stable operation at saturation point and CAC - Seamless Active L2 HO (packet lossless) 3G Circuit Service Availability while connected to WiBro Flexible network configuration but efficient 3G signaling 10/7
11 Network Elements (1/2) ACR Session Information Store Location Tracking & Paging Session Migration Interface with IP Core MAC Signaling Transport Connection Control L2 Handoff Control ASN (Access Serving Node) SC/MM APC(AP Controller) Mac Control Packet Classifier Header Compress ARQ tunnel AP(Access Point) tunnel RAS MAC scheduler Modem Control Air Link Control MAC PDU Process Encryption /PHY 11/7
12 Network Elements (2/2) APP(Air Physical Processing) d/e PHY Delay sensitive MAC (including scheduling) AMP(Air MAC Processing) d/e delay insensitive MAC (e.g., header suppression, key management, ARQ) L2 Handoff Control CNP(Core Network Processing) Inter-working with core networks (e.g., DHCP, HA, AAA) Session information handling & location tracking (i.e., SC/MM : Session Control and Mobility Management) 12/7
13 Network Configuration (1/4) CNP + SC/MM AMP AP APP ASN APC AP IP Core Network APC AP Network Elements Configuration Pros. Cons. Type I ASN, APC, AP 1 ~ 3 APC/ASN 320 AP/APC 320 ~960 AP/ASN Seamless handover Large subnet coverage 3-tier architecture High-speed backhaul required Type I Target Market Centralized-Mobile Public (Macro-cell) 13/7
14 Network Configuration (2/4) Network Elements ACR, AP Type II AMP + CNP + SC/MM IP Network Configuration 160~240 AP/ACR ACR Pros. Seamless handover Cons. High-speed backhaul required AP APP AP Target Market Centralized-Mobile Public(Micro/Hot Zone) Type II 14/7
15 Network Configuration (3/4) IP Network Network Elements ASN, APS Type III CNP + SC/MM ASN Configuration 320 ~ 960 APS/ASN Pros. Simple architecture APS APP + AMP APS Cons. Non-seamless handover Type III Target Market Distributed-Portable Enterprise/Home 15/7
16 Network Configuration (4/4) Network Elements ASN, APR Type IV IP Network Configuration 320 ~ 960 APR/ASN CNP + SC/MM ASN Pros. Simple architecture Local routing capability APR APR Cons. Non-seamless handover APP + AMP + FA Target Market Distributed-Portable Enterprise/Home Type IV 16/7
17 Network Configuration Comparison Type I Type II Type III Type IV Network Elements ASN, APC, AP ACR, AP ASN, APS ASN, APR Config. 1~3 APC/ASN 320 AP/APC 160~240 AP/ACR 320 ~ 960 APS/ASN 320 ~ 960 APR/ASN 320~960 AP/ASN Pros. Seamless HO Large subnet coverage Seamless HO Simple architecture Simple architecture Local routing capability Cons. 3-tier architecture High-speed backhaul required High-speed backhaul required Non-seamless HO Non-seamless HO Target Market Centralized-Mobile Public (Macro-cell) Centralized-Mobile Public(Micro/Hot Zone) Distributed- Portable Enterprise/Home Distributed- Portable Enterprise/Home 17/7
18 WiBro Network Architecture WIBro Enterprise N/W APR PSTN/PLMN WiBro WiBro APR APS APS ASN ASN AAA MIP HA IP CN ACR ASN IMS GSN/PDSN BR Internet RNC/BSC WiBro Home N/W WiBro AP AP AP APC NodeB/BTS 3G RAN Macro-cell AP : Access Point APC : AP Controller APS : AP System (AP + APC) APR : AP Router (APS + FA) ASN : Access Serving Node ACR : APC + ASN WiBro Public/ Hot-zone AP WiBro WiBro Public/Macro 3G MS 3G 18/7
19 A Tend of Standardization 19/7
20 Standard bodies TTA PG302 Service Network Working Group RAS-ACR Interface ACR-ACR Interface Work Items and specific work scope discussion IEEE Task Group f/g Network Management Base Station-Base Station Interface Backbone communication protocol (BS-BS) IEEE802.16f/g-draft under reviewing 20/7
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