Mobile Computing HEP UK System Managers Meeting March 2000, RAL John Gordon RAL/ITD

Dec ‘99MONARC Mobile Computing Cybercafes Laptops PDAs GSM Phones

Dec ‘99MONARC Cybercafes Can you use them to read your ? Can you reach your resources? Can you do it securely?

Dec ‘99MONARC Laptops Thick - all the extras (7lb) Thin - no CD, floppy (4lb) Small - smaller screen and keyboard (2-3lb)

Dec ‘99MONARC Laptop Issues Networking Modems Power Printers

Dec ‘99MONARC Laptop Networking Ethernet trivial, wireless possible DHCP –assigns IP number(s), so no network setup –Many HEP sites support it, may have to register (so know your MAC) PPTP –VPN, dialup over the Internet –tunnel through firewall, with authentication

Dec ‘99MONARC Modems ISDN (2x64kbit) - good if available V.90 56kb - but probably won’t deliver –dialback - lab pays –ISP with local number –Global dialler (IBM, GRIC) –calling card Need phone adaptors to travel

Dec ‘99MONARC Power The more spare batteries the better Foreign power adaptors Lightweight power supply Heavyweight power supply

Dec ‘99MONARC Printers Lightweight Printers Load all common drivers so that you can use other peoples printers

Dec ‘99MONARC GSM Mobile phone to laptop via PCMCIA, Serial, or IR 9600bps (but improvements in sight) Slow but very mobile (car, hotel, plane, beach, meetings) Dialback can reduce costs but international calls cost to receive as well.

Dec ‘99MONARC GSM futures HSCSD 9.6 > 14.4 (+2x compression)>28.8 –due this year GPRS - Packet switched data UMTS - third generation

Dec ‘99MONARC GPRS GSM timeslices between 8 channels which all talk to different base stations to use best signal. GPRS uses several (all?) of these in parallel –up to 115kbps –connects to Internet or X.25, VPNs –phone always accessible –pay per packet Due in 2000 but no sign of services yet Probably restricted to network devices

Dec ‘99MONARC

Dec ‘99MONARC UMTS 2GHz technology Licences being auctioned now Standards still being defined Phones being developed Probably 2002/3 128k-2Mb Phase Mbps

Dec ‘99MONARC PDAs Much smaller and lighter but restricted computing. GSM via PC cards

Dec ‘99MONARC Phones Phones and PDAs getting more similar CeBit99 WAP

Dec ‘99MONARC WAP Wireless Access Protocol ( Web browsing from a phone) Web server needs to support a few extra MIME types (eg.WML). Pages marked up in WML (a flavour of XML) Phone connects to WAP server at ISP –can then connect to other servers via Internet Once HEP starts serving data via XML it will be easyto extend to WML