Samsung SPI 2210012502 User Manual

FCC ID : A3LSPI-2210012502

ATTACHMENT E.

- USER MANUAL -

HCT CO., LTD.

SAN 136-1, AMI-RI, BUBAL-EUP, ICHEON-SI, KYOUNGKI-DO, 467-701, KOREA TEL:+82 31 639 8517 FAX:+82 31 639 8525 www.hct.co.kr

Report No. : HCTR1003FR03

1/1

EPBD-001848

Ed. 07

Mobile WiMAX Indoor RAS SPI-2210

100RAS Indoor Premium RAS

System Description

This manual is proprietary to SAMSUNG Electronics Co., Ltd. and is protected by copyright.

No information contained herein may be copied, translated, transcribed or duplicated for any commercial purposes or disclosed to the third party in any form without the prior written consent of SAMSUNG Electronics Co., Ltd.

TRADEMARKS

Product names mentioned in this manual may be trademarks and/or registered trademarks of their respective companies.

This manual should be read and used as a guideline for properly installing and operating the product.

This manual may be changed for the system improvement, standardization and other technical reasons without prior notice.

If you need updated manuals or have any questions concerning the contents of the manuals, contact our Document Center at the following address or Web site:

Address: Document Center 3rd Floor Jeong-bo-tong-sin-dong. Dong-Suwon P.O. Box 105, 416, Maetan-3dong Yeongtong-gu, Suwon-si, Gyeonggi-do, Korea 442-600

Homepage: http://www.samsungdocs.com

Mobile WiMAX Indoor RAS SPI-2210 System Description

INTRODUCTION

Purpose

This description describes the characteristics, functions and structures of the Indoor Premium RAS of Mobile WiMAX, also referred to as the indoor SPI-2210, Throughout this document, the SPI-2210 designation will be used.

Document Content and Organization

This description is composed of five Chapters, an Abbreviation and Index as follows:

CHAPTER 1. Overview of Mobile WiMAX Network

Mobile WiMAX System Introduction

Characteristics of Mobile WiMAX System

Components of Mobile WiMAX Network

Functions of Mobile WiMAX System

CHAPTER 2. Overview of Indoor SPI-2210

Indoor SPI-2210 Introduction

Major functions

Resources

System Configuration

Interface between the Systems

CHAPTER 3. Indoor SPI-2210 Architecture

System Configuration

Hardware Structure

Software Structure

Redundancy

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

CHAPTER 4. Message Flow

Call Processing Message Flow

Network Synchronization Message Flow

Alarm Message Flow

Loading Message Flow

Operation and Maintenance Message Flow

CHAPTER 5. Additional Functions and Tools

TTLNA

Web-EMT

ABBREVIATION

Describes the acronyms used in this manual.

INDEX

Index provides main searching keywords to be found.

Conventions

The following types of paragraphs contain special information that must be carefully read and thoroughly understood. Such information may or may not be enclosed in a rectangular box, separating it from the main text, but is always preceded by an icon and/or a bold title.

NOTE

Indicates additional information as a reference.

			Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

Revision History

	EDITION	DATE OF ISSUE	REMARKS

00		05. 2007.	First Draft

01		06. 2007.	- MMA Æ MMA-S
			- Modify the information related to backhaul (MMA-S, MEI)
			- Modify the figure 4.17
			- Modify the other errors
02		09. 2007.	- ‘Input Power’ is changed. (2.3 Specifications)
			- ‘Figure 3.1’, ‘Figure 3.8’, ‘Figure 4.15’ and ‘Figure 4.17’ are
			changed.
			- ‘FQM’ is deleted.
			- ‘OPM Main Functions’ is changed.
			- ‘Call Processing Message Flow’ is changed.

03		12. 2007.	- ‘T1’ is deleted.
			- ‘DS3’ is deleted
			- ‘DN3 Interface’ is deleted.
			- ‘DHCP’ is deleted.
			- ‘MTA’ is deleted.
			- ‘LPMT’ is deleted.
			- ‘LPMD’ is deleted.
			- ‘MTBF’ is deleted.
			- ‘MEI Redundancy Structure (3.4.3)’ is deleted.
			- ‘MEI port’ is changed.
			- ‘MMA port’ is changed.
			- ‘FFT size’ is changed.
			- ‘Environmental Condition’ is changed.
			- ‘RJIM’ is changed.
			- ‘Call Processing Message Flow’ is changed.
04		06. 2008.	-‘RF bandwidth’ is changed.
			- ‘RRC & RRA Function’ is deleted.
			- ‘MIMO Uplink’ is changed.
			- ‘UDA’ is added.
			- ‘TAC Control & OAM Traffic throttling’ are added.
			- ‘Call Processing Message Flow’ is changed.

05		11. 2008.	- PDP-PI Æ PDP-PIR

06		03. 2009.	- The RADIUS protocol support for interfacing with the AAA
			server is added. (1.3, 2.5.1, 4.1)
			- ‘Disabling ZCS’ function is added. (2.2.5)
			- Figure 3.5 is changed.
			- The alarm port specification is changed from 10 Tx UDA to
			6 Tx UDA. (3.2.5, 3.2.6)
			- The path test-related content is modified. (3.3.3.13)
			- The failure alarm types are modified. (4.3)
			- The acronyms in The ABBREVIATION section are modified.
07		06. 2009.	- Modify Figures 1.1, 1.2, 2.4, 4.1 to 4.4, 4.6 to 4.8, and 4.13
			to 4.15
			- Add Figures 4.9
			- Modify Sections 1.3, 3.3.3.6, 4.1.1 to 4.1.4, and 4.1.6

III

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

This page is intentionally left blank.

Mobile WiMAX Indoor RAS SPI-2210 System Description

TABLE OF CONTENTS

INTRODUCTION	I
Purpose ..................................................................................................................................................	I
Document Content and Organization.....................................................................................................	I
Conventions...........................................................................................................................................	II
Revision History....................................................................................................................................	III

CHAPTER 1. Overview of Mobile WiMAX System		1-1
1.1	Introduction to Mobile WiMAX ..............................................................................................	1-1
1.2	Characteristics of the Mobile WiMAX System .....................................................................	1-3
1.3	Mobile WiMAX Network Configuration .................................................................................	1-4
1.4	Mobile WiMAX System Functions.........................................................................................	1-6

CHAPTER 2. Overview of Indoor SPI-2210			2-1
2.1	Introduction to Indoor SPI-2210 ............................................................................................		2-1
2.2	Main Functions .......................................................................................................................		2-3
	2.2.1 Physical Layer Processing Function ....................................................................................		2-3
	2.2.2	Call Processing Function......................................................................................................	2-5
	2.2.3	IP Processing Functions.......................................................................................................	2-8
	2.2.4 Auxiliary Device Interface Function ......................................................................................		2-9
	2.2.5	Maintenance Function ........................................................................................................	2-10
2.3	Specifications .......................................................................................................................		2-14
2.4	System Configuration ..........................................................................................................		2-17
2.5	Interface between Systems .................................................................................................		2-19
	2.5.1	Interface Structure...............................................................................................................	2-19
	2.5.2	Protocol Stack.....................................................................................................................	2-20
	2.5.3 Physical Interface Operation Method .................................................................................		2-21

CHAPTER 3. Indoor SPI-2210 Architecture		3-1
3.1	System Configuration ............................................................................................................	3-1
3.2	Detailed Structure...................................................................................................................	3-3

			Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

		3.2.1 Digital Main Block (DMB)......................................................................................................		3-3
		3.2.2	RF Block (RFB).....................................................................................................................	3-7
		3.2.3	PDP-PIR .............................................................................................................................	3-10
		3.2.4	Radiation Structure .............................................................................................................	3-12
		3.2.5	I/O Module ..........................................................................................................................	3-14
		3.2.6	External Interface Structure ................................................................................................	3-15
3.3		Software Structure...............................................................................................................		3-17
		3.3.1	Basic Structure....................................................................................................................	3-17
		3.3.2	Call Control (CC) Block.......................................................................................................	3-19
		3.3.3 Operation And Maintenance (OAM) Block .........................................................................		3-21
3.4		Redundancy Structure ........................................................................................................		3-39
		3.4.1	MMA-S Redundancy Structure...........................................................................................	3-39
		3.4.2	MRA-S Redundancy Structure...........................................................................................	3-40
		3.4.3	Backhaul Redundancy Structure........................................................................................	3-40

	CHAPTER 4.		Message Flow	4-1
	4.1	Call Processing Message Flow.............................................................................................		4-1
		4.1.1	Initial Access .........................................................................................................................	4-1
		4.1.2	Authentication .......................................................................................................................	4-5
		4.1.3	Status Change ......................................................................................................................	4-8
		4.1.4	Location Update..................................................................................................................	4-13
		4.1.5	Paging.................................................................................................................................	4-18
		4.1.6	Handover ............................................................................................................................	4-19
		4.1.7	Access Termination.............................................................................................................	4-25
4.2		Network Synchronization Message Flow...........................................................................		4-27
4.3		Alarm Signal Flow................................................................................................................		4-28
4.4		Loading Message Flow........................................................................................................		4-30
4.5		Operation and Maintenance Message Flow.......................................................................		4-32

	CHAPTER 5. Additional Functions and Tools			5-1
	5.1	TTLNA/RET.............................................................................................................................		5-1
5.2		Web-EMT ................................................................................................................................		5-2

VII

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

ABBREVIATION	I
A ~ C .......................................................................................................................................................	I
D ~ H......................................................................................................................................................	II
I ~ O ......................................................................................................................................................	III
P ~ S .....................................................................................................................................................	IV
T ~ W .....................................................................................................................................................	V

INDEX	I
A ~ E .......................................................................................................................................................	I
F ~ M......................................................................................................................................................	II
N ~ R.....................................................................................................................................................	III
S ~ W....................................................................................................................................................	IV

VIII

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

LIST OF FIGURES

Figure 1.1 Mobile WiMAX Network Configuration ..................................................................		1-4
Figure 1.2 Configuration of Mobile WiMAX System Functions (Based on Profile C) ..............		1-6
Figure 2.1 IPv4/IPv6 Dual Stack Operation ............................................................................		2-8
Figure 2.2	SMIR Configuration .............................................................................................	2-17
Figure 2.3 SMIR Configuration (SMIR-A is added)...............................................................		2-18
Figure 2.4 Structure of Indoor SPI-2210 Interface................................................................		2-19
Figure 2.5 Protocol Stack between NEs ...............................................................................		2-20
Figure 2.6 Protocol Stack between Indoor SPI-2210 and WSM ...........................................		2-20
Figure 3.1 Internal Configuration of Indoor SPI-2210 .............................................................		3-2
Figure 3.2	DMB Configuration................................................................................................	3-3
Figure 3.3	RFB Configuration.................................................................................................	3-7
Figure 3.4	PDP-PIR Configuration .......................................................................................	3-10
Figure 3.5	Power Structure....................................................................................................	3-11
Figure 3.6 Fan and Related Devices ....................................................................................		3-12
Figure 3.7 Radiation Structure of Indoor SPI-2210...............................................................		3-13
Figure 3.8 I/O Module Configuration ....................................................................................		3-14
Figure 3.9 External Interfaces of Indoor SPI-2210 ...............................................................		3-15
Figure 3.10 Software Structure of Indoor SPI-2210..............................................................		3-17
Figure 3.11 CC Block Structure ............................................................................................		3-19
Figure 3.12 OAM Software Structure....................................................................................		3-21
Figure 3.13 Interface between OAM Blocks .........................................................................		3-22
Figure 3.14	SNMPD Block ...................................................................................................	3-23
Figure 3.15	OAGS Block ......................................................................................................	3-24
Figure 3.16	Web-EMT Block ................................................................................................	3-25
Figure 3.17	CLIM Block........................................................................................................	3-26
Figure 3.18	PAM Block.........................................................................................................	3-27
Figure 3.19	UFM Block.........................................................................................................	3-29
Figure 3.20	Loader Block .....................................................................................................	3-30
Figure 3.21	ULM Block.........................................................................................................	3-32
Figure 3.22	OPM Block ........................................................................................................	3-33
Figure 3.23	OSSM Block......................................................................................................	3-34
Figure 3.24	OER/OEV Block ................................................................................................	3-35
Figure 3.25	OCM Block ........................................................................................................	3-36
Figure 3.26	RDM Block ........................................................................................................	3-38
Figure 3.27 Redundancy Structure of OAM Block (MMA-S).................................................		3-39

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

Figure 3.28 Redundancy Structure of UCCM (MMA-S) ........................................................		3-39
Figure 3.29 MRA-S Redundancy Structure...........................................................................		3-40
Figure 3.30 Load Sharing Structure of Backhaul...................................................................		3-40
Figure 4.1	Initial Access Process ............................................................................................	4-2
Figure 4.2 Authentication Procedure (At the time of initial access) .........................................		4-5
Figure 4.3 Authentication Procedure (At the time of the Authenticator Relocation).................		4-7
Figure 4.4 Awake Mode Æ Idle Mode Status Change Procedure ...........................................		4-8
Figure 4.5 Awake Mode Q Sleep Mode Status Change Procedure ......................................		4-10
Figure 4.6 Idle Mode Æ Awake Mode (QCS) Procedure.......................................................		4-11
Figure 4.7 Inter-RAS Location Update Procedure.................................................................		4-13
Figure 4.8 Inter-ACR Location Update Procedure (CMIP/PMIP Case) .................................		4-14
Figure 4.9 Inter-ACR Location Update Procedure (Simple IP Case) ....................................		4-16
Figure 4.10	Paging Procedure ..............................................................................................	4-18
Figure 4.11 Inter-RAS Handover Procedure .........................................................................		4-19
Figure 4.12 Inter-ASN Handover (ASN-Anchored Mobility) ..................................................		4-21
Figure 4.13 Inter-ASN Handover (CSN-Anchored Mobility) ..................................................		4-23
Figure 4.14 Access Termination (Awake Mode)....................................................................		4-25
Figure 4.15 Access Termination (Idle Mode).........................................................................		4-26
Figure 4.16 Network Synchronization Flow of Indoor SPI-2210............................................		4-27
Figure 4.17 Alarm Signal Flow of Indoor SPI-2210 ...............................................................		4-28
Figure 4.18 Alarm and Control Structure of Indoor SPI-2210................................................		4-29
Figure 4.19 Loading Message Flow ......................................................................................		4-31
Figure 4.20 Operation and Maintenance Signal Flow ...........................................................		4-33
Figure 5.1	TTLNA/RET Interface ............................................................................................	5-1
Figure 5.2	Web-EMT Interface................................................................................................	5-2

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

This page is intentionally left blank.

Mobile WiMAX Indoor RAS SPI-2210 System Description

CHAPTER 1. Overview of Mobile

WiMAX System

1.1 Introduction to Mobile WiMAX

The Mobile WiMAX system is the wireless network system that supports IEEE 802.16. The IEEE 802.16 standard constitutes the basis for Mobile WiMAX, and includes IEEE Std 802.16-2004 which defines the fixed wireless Internet connection service, and IEEE Std 802.16, P802.16-2004/Cor/D3 which defines mobility technology such as handover or paging.

Mobile WiMAX Standard

In this description, the entire Mobile WiMAX standard is expressed IEEE 802.16.

The wireless LAN (WLAN, Wireless Local Area Network) can provide high speed data services, but its radio wave is short and covers only small areas, and also gives limited user mobility. It is difficult for WLAN to ensure Quality of Service (QoS) for data service.

On the contrary, the present mobile communication networks support the mobility of the users, but the service charge and the cost of system operations are high due to the limited wireless resources. To provide faster service in the existing mobile communication networks, it requires a separate wireless communication technology such as High Speed Packet Access (HSPA) for the data services.

Mobile WiMAX can, therefore, overcome the limitations of the WLAN and present mobile communication networks, and accommodate only the advantages of the system.

Mobile WiMAX can ultimately provide the high speed wireless internet services with low cost at any time and in anyplace.

Samsung Mobile WiMAX System provides high speed data services using the transmission technology of Orthogonal Frequency Division Multiple Access (OFDMA) by the Time Division Duplex (TDD), and can give wider coverage compared to the existing WLAN. The system performance and the capacity have been expanded by the high performance hardware, and thus, it can easily give various functions and services to the users.

1-1

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

The Mobile WiMAX system consists of Radio Access Station (RAS), Access Control Router (ACR) and Mobile WiMAX System Manager (WSM). RAS manages 802.16 Medium Access Control (MAC)/Physical Layer (PHY) function for Mobile Station (MS), ACR manages various control functions and interworking function between Mobile WiMAX ASN system and CSN system...

System Support Standards

Network Working Group (NWG) of Mobile WiMAX Forum defines the Mobile WiMAX network as Access Service Network (ASN) and Connectivity Service Network (CSN). Samsung’s RAS is Base Station (BS) and ACR is ASN-GW (Gateway) of ASN, respectively. RAS and ACR are based on ASN Profile C and Wave 2 Profile defined in the Mobile WiMAX Forum and the Wave 2 Profile contains Wave 1 Profile.

1-2

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

1.2 Characteristics of the Mobile WiMAX System

The major characteristics of Mobile WiMAX system are listed below.

High Compatibility and Cross-Interworking

The Mobile WiMAX system is based on IEEE 802.16 and complies with Wave 2 Profile and ASN Profile C of the Mobile WiMAX Forum. Therefore, the Mobile WiMAX system provides high compatibility and excellent cross-interworking.

High Performance Module Structure

The Mobile WiMAX system has high performance by using high-performance processor and provides the module structure that it is easy to upgrade hardware and software.

High System Stability

The Mobile WiMAX system provides the redundancy structure for main modules to ensure higher stability.

Variant Advance RF and Antenna Solution Support

The Mobile WiMAX system supports Multiple Input Multiple Output (MIMO) and applies the power amplifier to support wideband operation bandwidth. In addition, it can readily support 4-branch diversity and beamforming via upgrading software and additional hardware. (Beam Form and 4TXs will be an future option )

Evolution Possibility into Next Generation Networking

The Mobile WiMAX system complies with the structure of the Mobile WiMAX ASN Profile C network and the ASN Profile C network composition is similar to the network structure considered in 3GPP Long Term Evolution (LTE)/Service Architecture Evolution (SAE). Therefore, the Mobile WiMAX system can easily evolve into the next generation network.

Maintenance Function with Strengthened Security

The Mobile WiMAX system provides the security function (SNMPv3, SSH, SFTP and HTTPs) to all channels for operation and maintenance. And it provides the operator Authentication, Authorization and Accounting (AAA) function to authenticate the operator and assign the right for system access and stores the operation history in a log.

1-3

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

1.3 Mobile WiMAX Network Configuration

Mobile WiMAX network is composed of ASN and CSN. ACR and RAS are involved in ASN and WSM is the Network Element (NE) to manage ACR and RAS. CSN is composed of AAA server, HA, DNS server and PCRF server. ASN is connected with CSN by router and switch.

The following diagram shows the composition of Mobile WiMAX network.

AAA

Core Router/Switch

	DHCP
	Internet
	PCRF
	CSN
WSM	Edge Router/Switch
	Edge Router/Switch
	ASN

ACR	…			ACR
RAS	RAS	RAS		RAS
RAS		RAS
MS	MS		MS	MS

Figure 1.1 Mobile WiMAX Network Configuration

Radio Access Station (RAS)

RAS as the system between ACR and MS has the interface with ACR and provides the wireless connection to MS under IEEE 802.16 standards to support wireless communication service for subscribers.

RAS carries out wireless signal exchange with MS, modulation/demodulation signal processing for packet traffic signal, efficient use of wireless resources, packet scheduling for Quality of Service (QoS) assurance, Admission Control, assignment of wireless bandwidth, Automatic Repeat Request (ARQ) processing and ranging function. In addition, RAS controls the connection for packet calls and handover.

1-4

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

Access Control Router (ACR)

ACR, which is the system between CSN and RAS, enables several RASs to interwork with IP network, sends/receives traffic between external network and MS, and controls QoS. The ACR interfaces with the Authentication, Authorization and Accounting (AAA) server using the DIAMETER/RADIUS protocols and with the Policy & Charging Rules Function(PCRF) server using the Diameter protocol . For Mobile IP services the ACR interacts with the Home Agent.

Mobile WiMAX System Manager (WSM)

WSM provides the management environment for the operator to operate and maintain ACR and RAS.

Home Agent (HA)

HA accesses other networks or private networks and enables Mobile IP (MIP) users to access internet. HA interworks with ACR that performs Foreign Agent (FA) function for Mobile IPv4 and interworks with MS to exchange data for Mobile IPv6.

Dynamic Host Configuration Protocol (DHCP) Server

The DHCP server allocates IP addresses to simple IP users. When an MS requests an IP address to be allocated, the DHCP server allocates an IP address by interacting with the the ACR that functions as a DHCP relay agent.

Authorization, Authentication and Accounting (AAA) Server

AAA server interfaces with ACR and carries out subscriber authentication and accounting functions. The AAA server interfaces with ACR via Diameter/RADIUS protocol and provides Extensible Authentication Protocol (EAP) certification.

Policy & Charging Rules Function (PCRF) Server

The PCRF server is the server that manages the service policy and interfaces with ACR via Diameter protocol. The PCRF server sends QoS setting information for each user session and accounting rule information to ACR.

1-5

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

1.4 Mobile WiMAX System Functions

The figure below shows the functions of the ASN systems (ACR and RAS) based on Profile C. Each block name complies with the standard of Mobile WiMAX NWG.

ASN

ASN-GW (ACR)
ASN-GW (ACR)			MIP FA			PMIP client
			MIP FA			PMIP client


	Paging Controller	Authenticator		IP Packet Forwarding


	Location Register	Key Distributor		Header Compression
	Context Function
	Context Function	SFA		Packet Classification
		SFA		Packet Classification

	Handover Function

		AAA Client			DHCP relay agent
	(Handover Relay)	AAA Client			DHCP relay agent


			R6

BS (RAS)

	Context Function	Key Receiver			ARQ Operation


	Handover Function	RRC & RRA				MAC PDU
	(Handover Control)	RRC & RRA				MAC PDU


		SFM		Encapsulation/PHY
		(Admission Control)
		(Admission Control)

Figure 1.2 Configuration of Mobile WiMAX System Functions (Based on Profile C)

The ACR supports the Convergence Sublayer (CS) and performs the packet classification and Packet Header Suppression (PHS) functions. When the ACR carries out the header compression function, it supports ROHC defined in the NWG standard.

In addition, the ACR performs the paging controller and location register functions for a MS in Idle Mode.

In authentication, the ACR performs the authenticator function and carries out the key distributor function to manage the higher security key by interworking with the AAA server as an AAA client. At this time, RAS performs the key receiver function to receive the security key from the key distributor and manage it.

The ACR interworks with the AAA server of CSN for authentication and charging services and with the HA of CSN for Mobile IP (MIP) service. The ACR as FA of MIP supports Proxy MIP (PMIP).

1-6

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

The RAS performs the Service Flow Management (SFM) function to create/change/release connections for each Service Flow (SF) and the admission control function while creating/changing connections. In regard to the SFM function of the RAS, the ACR carries out the SF Authentication (SFA) and SFID management functions. The ACR carries out the SFA function to obtain the QoS information from Policy Function (PF) and apply it in the SF creation and performs the SFID management function to create/change/release SFID and map SF according to the packet classification.

In handover, the RAS performs the handover control function to determine the execution of the handover and deal with corresponding handover signaling. The ACR confirms the neighbor BS list and relays the handover signaling message to the target system.

At this time, the ACR and the RAS carries out the context function to exchange the context information between the target system and the serving system.

The RAS provides admission control to collect/manage the MS's radio resource information and the RAS’s own radio resource information (e.g., BSID). When load balancing is required based on admission control results, it performs resource management through FA overriding and BS init HO (Handover).

ASN System Function

For the detailed description about the RAS functions, refer to Chapter 2 of this system description. For the description about the ACR functions, refer to the system description for ACR provided by Samsung.

1-7

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

This page is intentionally left blank.

1-8

Mobile WiMAX Indoor RAS SPI-2210 System Description

CHAPTER 2. Overview of Indoor SPI2210

2.1 Introduction to Indoor SPI-2210

The indoor SPI-2210, RAS of Mobile WiMAX, is controlled by ACR and connects Mobile WiMAX calls to MS.

The indoor SPI-2210 interfaces with MS via a wireless channel observing the Mobile WiMAX standard (IEEE 802.16) and provides high-speed data service and multimedia service in wireless broadband.

To this end, the indoor SPI-2210 provides the following functions: modulation/demodulation of packet traffic signal, scheduling and radio bandwidth allocation to manage air resources efficiently and ensure Quality of Service (QoS), Automatic Repeat Request (ARQ) processing, ranging function, connection control function to transmit the information on the indoor SPI-2210 and set/hold/disconnect the packet call connection, handover control and ACR interface function and system operation management function.

The indoor SPI-2210 interfaces with ACR in one way of Fast Ethernet/Gigabit Ethernet and can exchange various control signals and traffic signals stably.

The indoor SPI-2210 is installed in the indoor environment and managed in the omni or sector method according to the property of the installed area. In addition, the indoor SPI2210 supports the capacity of the maximum 3Carrier/3Sector and MIMO only with the basic rack.

The characteristics of the indoor SPI-2210 are as follows:

Application of the OFDMA Method

OFDMA is used to transmit data to several users simultaneously by using the sub-carrier allocated to each user and transmit data by allocating one or more sub-carriers to a specific subscriber according to the channel status and the transmission rate requested by a user. In addition, since it can select the sub-carriers with excellent features for each subscriber and allocate them to the subscribers when some subscribers divide and use the whole subcarrier, it can raise the data throughput by distributing the resources efficiently.

2-1

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

Support of Broadband Channel Bandwidth

The indoor SPI-2210 supports wide bandwidth of 5/10 MHz per carrier and high-speed and high capacity packet service.

Support of 3Carrier/3Sector

The indoor SPI-2210 can support 3Carrier/3Sector by the basic rack.

Support of MIMO

The indoor SPI-2210 basically supports MIMO of 2Tx/2Rx RF path. There are two methods of MIMO as follows;

yDownlink

Space Time Coding (STC): method for raising reliability of link Spatial Multiplexing (SM): method for raising data transmission rate

yUplink

Collaborative SM (CSM): Doubled frequency efficiency

Support of Frequency Reuse Pattern (FRP)

The indoor SPI-2210 supports FRP N=1 that provides the service to 3-sector by using a carrier and FRP N=3 that provides the service to 3-sector by using different carriers.

A service provider can efficiently operate its own frequency resources by using the FRP function.

Support of 4-Branch Rx Diversity (Optional)

The indoor SPI-2210 supports 4-branch Rx diversity providing four Rx paths to each sector to raise the Rx performance. In the indoor SPI-2210, Mobile WiMAX base station RF Receiver (MRR), an Rx module, should be additionally mounted to support 4-branch Rx diversity.

Support of Various Frequency Allocation

The indoor SPI-2210 supports various frequency allocation methods such as contiguous carrier, noncontiguous carrier, FRP N=1 or FRP N=3. The indoor SPI-2210 can apply RF combiner optionally to such frequency allocation methods.

Support of Beamforming (Optional)

The indoor SPI-2210 is designed as the structure to support beamforming later. The indoor SPI-2210 mitigates the interference efficiently by uplink and downlink beamforming to raises the average capacity and expand the data coverage. Also the indoor SPI-2210 needs the process to calibrate the reciprocity between uplink channel and downlink channel.

Schedule to Provide the System Feature

For the schedule to provide the features described in this system description, see separate document.

2-2

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

2.2 Main Functions

The main functions of the indoor SPI-2210 are as follows:

yPhysical layer processing function

yCall processing function

yIP processing function

yAuxiliary device interface function

yConvenient operation and maintenance function

2.2.1Physical Layer Processing Function

OFDMA Ranging

The ranging supported by the OFDMA system is roughly divided by the uplink timing synchronization method and the contention based bandwidth request method.

yUplink Timing Synchronization

In the uplink timing synchronization method, the indoor SPI-2210 detects the timing error of the uplink signal by using the ranging code transmitted from MS and transmits the timing correction command to each MS to correct the transmission timing of the uplink. The uplink timing synchronization method has initial ranging, periodic ranging, handover ranging, etc.

yContention Based Bandwidth Request

In the contention based bandwidth request method, the indoor SPI-2210 receives the bandwidth request ranging code from each MS and allocates uplink resources to the corresponding MS to enable to transmit the bandwidth request header.

The contention based bandwidth request method has bandwidth request ranging or something.

Channel Encoding/Decoding

The indoor SPI-2210 carries out the Forward Error Correction (FEC) encoding for the downlink packet created in the upper layer by using Conventional Turbo Code (CTC). On the contrary, it decodes the uplink packet received from the MS after demodulating.

Modulation/Demodulation

The indoor SPI-2210 carries out the FEC encoding for the downlink packet created in the upper layer and modulates the encoded packet into the QAM signal. In addition, the indoor SPI-2210 demodulates and decodes the uplink packet received from MS.

2-3

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

OFDMA Sub-carrier Allocation

The subchannelization is the process to tie the sub-carriers of OFDMA as a transmission unit after grouping them by a certain rule. The indoor SPI-2210 performs the subchannelization to mitigate the interference between cells.

The indoor SPI-2210 maps the column of the modulated downlink QAM symbol structure with each sub-carrier and carries out the subchannelization when the column of the QAM symbol structure is transmitted to the MS over the wireless line.

In such way, the indoor SPI-2210 transmits the column of the QAM symbol structure to the MS via the sub-carriers pertained to each subchannel.

DL/UL MAP Construction

The indoor SPI-2210 informs the air resources for the uplink and the downlink to the MS by using DL/UL MAP. The DL/UL MAP consists of the scheduling information of the indoor SPI-2210 and includes various control information for the MS.

Power Control

The indoor SPI-2210 carries out the power control function for the uplink signal received from multiple MSs and then set the power intensity of the uplink signal to a specific level. The indoor SPI-2210 transmits the power correction command to each MS and then makes the MS power intensity be the level required in the indoor SPI-2210 when the MS transmits the modulated uplink signal in a specific QAM modulation method.

Hybrid-ARQ (H-ARQ) Operation

H-ARQ is the physical layer retransmission method using the stop-and-wait protocol. The indoor SPI-2210 carries out the H-ARQ function and raises data throughput by retransmitting or combining the frame from the physical layer to minimize the effect attending to the change of wireless channel environment or the change in the interference signal level.

MIMO

The indoor SPI-2210 provides the MIMO function as follows according to Mobile WiMAX Wave 2 Profile:

yDownlink

Matrix A (Space-Time Coding)

Transmission ratio of the Matrix A or Space-Time Coding (STC) is 1 and equal to that of Single Input Single Output (SISO). However The Matrix A or the STC reduces the error of the signal received from the MS by raising the stability of the signal received from the MS by means of the Tx diversity. This technology is, also, effective in Signal to Noise Ratio (SNR) and provides excellent performance even when the MS moves in high speed.

−Matrix B (Spatial Multiplexing, vertical encoding)

Matrix B or Spatial Multiplexing (SM) method raises the effectiveness of the frequency by the number of antennas the transmission ratio in comparison with SISO. This technology is effective when the reception SNR is high.

2-4

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

yUplink

−Collaborative SM (CSM)

Collaborative SM is the technology that doubles the frequency efficiency in view of the indoor SPI-2210 as two MSs with each individual antenna send data simultaneously by using the same channel.

Beamforming

The indoor SPI-2210 can carry out the following beamforming function later according to Mobile WiMAX Wave 2 Profile: For the beamforming, the indoor SPI-2210 is designed on the basis of 4Tx and 4Rx.

yDownlink

DL dedicated pilots for Partial Usage of Subchannels (PUSC) and B-AMC (2¯3)

yUplink

UL sounding channel (type A) with decimation and cyclic shift UL PUSC and B-AMC (2¯3)

The beamforming operation method following the Wave 2 Profile is as follows:

1)If an MS in a specific area transmits the sounding signal to the indoor SPI-2210, the indoor SPI-2210 analyzes this signal.

2)The indoor SPI-2210 estimates an appropriate beamforming coefficient on the basis of the result analyzed in step 1).

3)The indoor SPI-2210 carries out the beamforming for the uplink and the downlink.

Since the uplink and downlink channels have the high correlation in TDD method, the beamforming can be supported.

2.2.2 Call Processing Function

Cell Initialization Function

The indoor SPI-2210 announces the MAC Management message such as DCD/UCD/ MOB_NBR-ADV to the cell area in service periodically to enable the MS receiving the message to carry out the appropriate call processing function.

Call Control and Wireless Resource Allocation Function

The indoor SPI-2210 enables an MS to enter to or exit from the network. When an MS enters to or exit from the network, the indoor SPI-2210 transmits/receives the signaling message required for call processing via R1 interface with the MS or R6 interface with ACR.

The indoor SPI-2210 allocates various management/transport Connection Identifier (CID) required for the network entry and service to a MS. When the MS exit from the network, the indoor SPI-2210 collects and release the allocated CID.

2-5

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

Handover

The indoor SPI-2210 carries out the signaling and bearer processing for inter-sector HO (Handover), inter-ACR HO and inter-carrier HO. At this time, ACR relays the handover message between serving RAS and target RAS through the R6 interface.

To minimize the traffic disconnection in inter-RAS HO, the indoor SPI-2210 performs the data switching function. In handover, the indoor SPI-2210 enables the serving RAS to switch the user data in queuing to the target RAS and, therefore, the MS to recover the traffic without loss.

Handover Procedure

For the detailed handover procedure, refer to Chapter 4 ‘Message Flow’.

Support of Sleep Mode

Sleep mode is the mode defined to save the MS power under IEEE 802.16 standard and indicates the status that air resources allocated to an MS are released when the MS does not need traffic reception/transmission temporarily. If the MS in Sleep Mode needs the traffic reception/transmission, the MS returns to the normal status immediately.

Both Idle Mode and Sleep Mode are modes to save the MS power. The Idle Mode release all service flows allocated to an MS, while the Sleep Mode releases only the air resources between the MS and RAS temporarily, continuously keeping the service flow information allocated to the MS.

The indoor SPI-2210 carries out the related call processing function by receiving/sending the signaling message required for the MS's status transition into Sleep Mode and the MS return from the Sleep Mode to Awake Mode.

Admission Control (AC) Function

If the indoor SPI-2210 receives the call setup request, such as network entry, QCS and handover, from an MS, it monitors the traffic and signaling load for each subcell and the number of user in Active/Sleep Mode and performs the AC function to prevent the system overload.

AC can be roughly divided into AC by MS and AC by service flow.

yAC by MS

If the number of users who the subcell is in Active/Sleep Mode exceeds the threshold when the indoor SPI-2210 receives the call setup request from an MS, it rejects the call setup request of the MS.

yAC by service flow

When service flow is added, the indoor SPI-2210 checks if the air resources of the requested subcell exceed the threshold and determines the creation of the service

2-6

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

MAC ARQ Function

The indoor SPI-2210 carries out the ARQ function of the MAC layer. In packet data exchange, ARQ transmits SDU from the transmission side to the ARQ block and retransmits the packet according to the ARQ feedback information received from the reception side to raise the reliability of data communication.

The indoor SPI-2210 carries out the following function for the service flows applying ARQ:

yCreation and transmission concerned with ARQ operation

yFeedback processing depending on ARQ types

yBlock processing (fragmentation/reassemble/retransmission) depending on ARQ types

yARQ timer/window management

QoS Support Function

The packet traffic exchanged between ACR and indoor SPI-2210 is delivered to the modem in the indoor SPI-2210. At this time, the indoor SPI-2210 allocates the queue in the modem to each service flow that QoS type is specified to observe the QoS constraint given for each QoS class or service flow and performs the strict-priority scheduling according to the priority. The modem that receives the packet traffic performs the scheduling by using the uplink/downlink algorithm, such as Proportional Fair (PF) or Round Robin (RR) and transmits the scheduled allocation information to an MS through DL/UL MAP.

The MS receiving the DL/UL MAP checks the air resources allocated to the MS and modulates/demodulates the downlink packet or transmits the uplink packet from the allocated uplink area.

Since the indoor SPI-2210 provides the QoS monitoring function, it can compile statistics on packets unsatisfying the latency requested from the QoS parameter according to TDD frames and report the statistics to an operator via the OAM interface.

2-7

+ 103 hidden pages