RFID Code Resolution Service Based on RFID Public Services Infrastructure

Liu Wei

Electronics and Information Eng. DepartmentHuazhong University of Science and Technology

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Agenda RFID Code Resolution Service

Introduction Background

Code Resolution Service Solution Components Architecture Key Technique Data Data and Network

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What is the RFID Code Resolution Service? RFID Public Service System can correlate Items

information in different areas, and achieve reunification of logistic and information flow.

RFID Public Service System can be divided into two levels: Dedicated application service (Region, Industry, Enterprise

Application) Common base service (Code Resolution)

RFID Code Resolution Service is the core of the RFID Public Service System. Provide Code and Address Resolution Service Achieve application service orientation according to the

electronic product code Achieve information exchange and share

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Where is the Code Resolution Service?

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Background EPC Global – Logistic

Things of Internet Including: Tag, Reader,

Savant, ONS, EPCIS

UID – Everyday Application U-code computing

model Including: Ucode,

Information Server, Ubiquitous Communications, Ucode Resolution Server

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Agenda What is the RFID Code Resolution Service?

Introduction Background

Code Resolution Service Solution Components Architecture Key Technique Data Data and Network

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Service Users

RFID Key Data event, index, content

User Roles Code Managers:

Distribution of the Code

Information Owners: Agencies who store RFID events and information, such as single

enterprise, leading enterprise in supply chain, industry charging ministry, and etc.

Base Service Provider Address Resolution, Active/Passive Information Service

Application Service Provider Value Added Service based on RFID Data

Query User

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Components

Distributed

Code

Resolution

System

Distributed

Mapping

Database

Network

Management

System

Security and Privacy Protection Framework

RFID Code Resolution Service

Interfaces

for EPCIS,

Application

Service,

Middleware

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Architecture

Root

Higher-level authorized Server

Lower-level authorized Server

Is a index service. Is a public resource for all

the RFID network users. For the scalability and

realization, it should be a distributed architecture. Only one root server Every server node can

have one or more child Every server only have one

father

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RFID Code Resolution Process

Address Resolution Location Search

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RFID Code Resolution Process (Continued)

CRS: Code Resolution Server O-CRS: Other industry CRS

L-CRS: Local CRS

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Key Technique RFID Code Resolution Network Framework

RFID Code Resolution Network Transport Protocols RFID Code Resolution Network Security and Access

Control Protocols

RFID Root Resolution System RFID Code Register and Management Multi-Codes Resolution Security Protection

RFID Distributed Resolution System Data Synchronization and Update Data Distributing and Prepare Strategy

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RFID Code Resolution Network Framework RFID Code Resolution Network Transport

Protocols PDU format PDU Sequence flow Information control method for process and exception

RFID Code Resolution Network Security and Access Control Protocols Key Encrypting algorithm Signature Security Architecture

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RFID Root Resolution System RFID Code Register and Management

Enterprise Register and Items Register, Human Register and Automatic Register

Data Management, including add, modify and delete

Multi-Codes Resolution Can support multi-codes, such as NPC, EPC, UID, and etc. Multi-Codes Control, can add new style RFID code or delete old

style RFID code

Security Protection Eavesdropping, Holding up RFID information DDos Re-transmission attack …

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RFID Distributed Resolution System Data Synchronization and Update

Cache Strategy, cache data updating Address mapping data synchronization, ensure the

data on Code Resolution Server is consistent with it on EPCIS

Sequence Flow and Data exchange rule

Data Distributing and Prepare Strategy Application Service

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Data

…

CRS（I0）

A B C Enterprise EPCIS

CRS Network

CRS（I1）

D E F G

I0(ABC) I1(DEF) EPC G …

A B C D E F

Data Pointer

Info

rmatio

n R

egis

te r

Common CRS

A B C

Info

rmatio

n sea

rc h

EPC

Data Pointer

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Data (Continued) Precondition

It is not need for user to know every node of a supply chain. Maybe some MNCs want to manage related supply chain

information by theirselves. Different users may get different supply chain information.

Solution Allow several nodes of a supply chain to be stored in one server,

and this server only can be controlled by some authorized users. Every node of a supply chain may be a small supply chain. General user can retrieve a fragmentary supply chain

information, this information may contain manufacture, distributor and retailer.

To retrieve more information, you should have right to search in-depth.

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Resolution Network

Register

CRS

CRS Network

A B C D

Enterprise EPCIS

…

CRS Network and Authentication

User General User VIP User

Public information

search

Classification

search

CA

EPC

…

Authenticaiton

Register Register Register

Thanks!

Liu Wei

Liuwei@mail.hust.edu.cn