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RF Networking

RF Networking. Topics. Wired network components Wireless network components Host Connectivity RF Technologies Technical Sales Tips. RF Networking. In-premise RF LAN. WAN. LAN. PAN. Wired Network Components. Network LAN Architecture Ethernet TCP/IP Protocol

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RF Networking

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  1. RF Networking

  2. Topics • Wired network components • Wireless network components • Host Connectivity • RF Technologies • Technical Sales Tips

  3. RF Networking • In-premise RF LAN WAN LAN PAN

  4. Wired Network Components • Network • LAN • Architecture • Ethernet • TCP/IP Protocol • Transmission Control Protocol / Internet Protocol • A standard procedure for regulating data transmission between computers. • Uniquely identifies each device on a network • Used in both Wired / Wireless networks TCP/IP

  5. Wired Network Components • Host computer • Mainframe (S/390) • Midrange (AS400) • Unix (Sun) • PC (NT Server)

  6. Wired Network Components • Client computer • Desktop PC • Laptop PC • Emulation terminal (dumb terminal)

  7. Wired Network Components • Software • Networking • Windows 95,98,NT • Novell • Linux • Etc. • Application • Power Point • Word • Excel • Access • Internet Browsers • Etc.

  8. Wired Network Components • Ethernet hub • Provides multiple ports for clients to access the wired Ethernet

  9. Wired Network Components • Ethernet bridge • Connects Ethernet segments • Filters traffic by MAC address

  10. Wired Network Components • Router • Connects different Ethernet subnets and or WANs • Filters traffic by TCP/IP address

  11. Complete Wired Picture

  12. Wireless Network Components TCP/IP • Network • LAN • Architecture • Ethernet • TCP/IP Protocol • Transmission Control Protocol / Internet Protocol • A standard procedure for regulating data transmission between computers. • Uniquely identifies each device on a network • Used in both Wired / Wireless networks

  13. Wireless Network Components • Host computer • Mainframe (S/390) • Midrange (AS400) • Unix (Sun) • PC (NT Server)

  14. Wireless Network Components • Wireless Client • RF enabled computer • Desktop PC • Laptop PC • Pen based PC (Pocket PC, Palm) • Portable data terminal 7200

  15. Wireless Network Components • Access point • Provides connectivity for wireless clients • Connects wireless to wired Ethernet segments, filters by MAC address • Combination Ethernet bridge and hub 7200

  16. Wireless Network Components • Client Software • Terminal emulation software • Connect, Inc. • RF Simplicity • HHP product • Custom software RF Simplicity Software Connect TE Software

  17. Wireless Network Components • RF Terminal Controller (Universal Gateway) • Terminal emulation support for large, complex systems 7200 Universal Gateway: Terminal server designed to optimize data flow between RF data collection terminals and host computers as well as enhance the maintenance and support of the wireless network.

  18. Simple Wireless Network

  19. Complex Wireless Network

  20. Host Connectivity • Terminal Emulation solutions • Hosts • Thick Client solutions • Thin Client solutions • Thick versus Thin • RF Simplicity • Custom application development

  21. Host Connectivity • Terminal emulations supported: • DEC VT100 / VT220 • IBM 3270 • IBM 5250

  22. Host Connectivity • VT100 / VT220 Hosts • IBM RS6000 • HP 9000 • DEC Alpha • SUN Solaris • PC running SCO UNIX • PC running LINUX • PC running NT and Telnet Services

  23. Host Connectivity • IBM 3270 Hosts • IBM ES9000 • IBM S390 • IBM AS/400 • Bull / Honeywell • Tandem

  24. Host Connectivity • IBM 5250 Host • IBM AS/400

  25. Host Connectivity • Thick Client: • Terminal emulation software resides on the hand held which communicates directly to the host • TNVT100/220, TN3270, TN5250 • TN = Telnet • TCP/IP over Ethernet to Host Required • No Universal Gateway required • aka “Direct Connect”

  26. Host Connectivity • Typical thick client configuration

  27. Host Connectivity • Remote thick client configuration

  28. Host Connectivity • Thin Client: • Some terminal emulation software resides on the hand held, the rest resides in the Universal Gateway • TNVT100/220, TN3270, TN5250 • TN = Telnet • TCP/IP over Ethernet • aka “Server-based connection”

  29. Host Connectivity • Typical thin client configuration: TN

  30. Host Connectivity • Remote thin client configuration: TN

  31. Host Connectivity • SNA / SDLC supported • Special quote! • Lead time longer with this setup! • Additional info available upon request

  32. Host Connectivity • Thick versus Thin Client • Pros & Cons • Rules of thumb

  33. Thick Client All terminal emulation software is located on the RF terminal. The RF terminal communicates directly to the terminal emulation host Thin Client A smaller amount of software (thin) resides on the RF terminal and the RF terminal communicates to the Universal Gateway. The Universal Gateway then communicates to the terminal emulation host. Host Connectivity

  34. Thick client pros Less system cost Less hardware Thick client cons Difficult to trouble-shoot remotely More work to maintain No data optimization Host Connectivity

  35. Thin client pros Remote dial in for easier trouble shooting & remote support Easier to maintain Optimizes data over network Thin client cons More cost Extra piece of hardware Host Connectivity

  36. Host Connectivity • Thick client rule of thumb: • Less than 15 – 20 terminals single site • Less than 15 – 20 terminals multi site in close proximity • Thin client rule of thumb: • Greater than 20 terminals single site • Greater than 20 terminals multi site • Stressed wide area network involved

  37. Host Connectivity • RF Simplicity • Tool for rapid application development • RF Simplicity takes care of TCP/IP sockets connection • Runs in Visual Basic environment under Windows 95/98/NT, perfect for VB programmers • Best solution for Windows host environments HANDS DOWN! • RF Simplicity could be used to off load processing from typical TE hosts

  38. Host Connectivity • Typical RF Simplicity configuration

  39. Host Connectivity • RF Simplicity – off loading processing from typical TE host

  40. Host Connectivity • Custom application development • DOS client in Ethernet TCP/IP environment • C programming • TCP/IP sockets interface, large task for many programmers

  41. Wireless Technologies • Frequency Hopping (FH) • WLIF • aka “OpenAir” Standard • Direct Sequence (DS) • 802.11b (DS) • IEEE Standard • Vendors

  42. Wireless Technologies • Frequency hopping spread spectrum. • Transmits on a single frequency for specified period of time, then hops to another frequency for a period of time etc.

  43. Wireless Technologies • Frequency hopping spread spectrum. • Interference avoidance by hopping. • Interfered transmission is resent.

  44. Wireless Technologies • Direct Sequence Spread Spectrum • Data is split up and redundantly transmitted simultaneously over a large bandwidth

  45. Wireless Technologies • Direct Sequence Spread Spectrum • 11 - 22 MHz wide stationary channels • 11, 5.5, 2 and 1 Mbps data rates possible • 3 non-overlapping 22 MHz channels • Potential 33Mbps with 3 Access Points

  46. 2.4 GHz Solutions • WLIF • Proxim based solution “OpenAir Standard” • Frequency Hopper • HHP supported • Will not work with 802.11 Frequency Hopper!

  47. 802.11b Direct Sequence Spread Spectrum HHP supported with Aironet/Cisco, Aironet/Cisco radio interoperable with existing 802.11b competitor installations 2.4 GHz Solutions

  48. Technical Sales Tips • Questions to ask • Host system (AS/400, S390, etc…)? • Wired backbone architecture (Ethernet, Token Ring, etc…)? • Emulation type (VT100/220, 3270, 5250)? • Size of area to cover? • What is being stored in area?

  49. Technical Sales Tips • Questions to ask cont’d • Desired throughput (what can the customer live with)? • Security? • Site Survey needed? • Number of terminals required per location? • Remote locations? • Type of data being collected (numeric v/s alpha)?

  50. Technical Sales Tips • Once answers are collected, 90% of homework is done. • Call HHP RF Systems Engineers for further assistance!

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