Paul H Long

US Patent:

6539237, Mar 25, 2003

Filed:

Nov 9, 1998

Appl. No.:

09/188856

Inventors:

Ian Leslie Sayers - Redwood City CA
Paul Jan Long - San Francisco CA
Sheausong Yang - Saratoga CA

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04B 138

US Classification:

455555, 455461, 455554

Abstract:

A communication system formed by a private network that includes a private wireless network. The communication system includes a public wireless network using a public wireless protocol, such as GSM, and includes public networks, such as PSTN, ISDN and the Internet, using a wired protocol, such as IP. The private network also includes a local area network (LAN) and the private network connects to the public networks using a wired packet protocol, such as IP. The public and private wireless networks operate with the same public wireless protocol, such as GSM, and the private wireless network additionally operates with a wired packet protocol, such as IP. The communication system permits users to operate freely in both public and private wireless networks using standard mobile stations while achieving high private network data rates. The communication system uses normal wireless handsets or other mobile or fixed stations without need for any modifications.

US Patent:

6542754, Apr 1, 2003

Filed:

May 12, 1999

Appl. No.:

09/310566

Inventors:

Ian Leslie Sayers - Redwood City CA
Paul Jan Long - San Francisco CA
Peter Kendall Cripps - Redwood City CA

Assignee:

Cisco Systems, Inc. - San Jose CA

International Classification:

H04B 701

US Classification:

455502, 455422, 455507, 370350, 370503

Abstract:

A communications system extends over a cellular region formed of a plurality of wireless cells where each cell covers a portion of the cellular region. Each cell has a base station clock unit that facilitates reliable and accurate synchronization with other clocks units in other cells using a master clock signal from a global positioning system (GPS) or other accurate frequency source. The clock unit in each cell includes a local clock providing a local clock signal for clocking the cell. A master clock source provides one or more master clock signals and a clock synchronizer receives the master clock signals and forms a synchronizing master clock signal for synchronizing the local clock signal. In one or more of the wireless cells of the communication system, the clock unit is a master clock unit which includes a clock distributor for distributing a distributed master clock signal to one or more other wireless cells having slave clock units.

US Patent:

6687243, Feb 3, 2004

Filed:

Sep 29, 1999

Appl. No.:

09/408967

Inventors:

Ian Leslie Sayers - Redwood City CA
Paul Jan Long - San Francisco CA

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 1266

US Classification:

370356, 370466

Abstract:

A communications system extends over a cellular region formed of a plurality of wireless cells where each cell covers a portion of the cellular region. Each cell has a base station which is responsible for communication with the cellular subscriber. In order for a call to be properly managed in the public cellular domain, responsibility for call handling and processing must first be managed by a public MSC. Call handling with the public MSC for a private cellular subscriber first requires the exchange of information between the two systems. This is facilitated through the exchange of MAP and A interface signaling between the private and public cellular systems. Since this information on the private network is normally transmitted via IP, this information must be converted to standard SS7 based MAP and A protocol signaling in order for the public MSC to process.

US Patent:

6729929, May 4, 2004

Filed:

Mar 17, 1999

Appl. No.:

09/271596

Inventors:

Ian Leslie Sayers - Redwood City CA
Paul Jan Long - San Francisco CA
Peter Kendall Cripps - Redwood City CA

Assignee:

Cisco Systems, Inc. - San Jose CA

International Classification:

H04Q 720

US Classification:

445446, 455443, 455444

Abstract:

A communications system extending over a cellular region and formed of a plurality of wireless cells. The communications system extends over a cellular region formed of a plurality of wireless cells. Each cell covers an area which includes a portion of the cellular region. Each particular cell includes a base station having a transmitter for transmitting a particular cell signal having parameters including a transmitting frequency and a transmitting power. The particular cell signal is transmitted to cover a portion of the cell region. Each of the base stations includes a parameter detector for detecting the other parameters of the other cell signals from the other cells in the cellular region. A parameter controller controls the particular parameters for the particular cell. The parameters for the particular cell are based upon the other parameters for the other cell signals so that the particular cell signal does not interfere with the other cell signals in the cellular region.

US Patent:

6807431, Oct 19, 2004

Filed:

Mar 21, 2003

Appl. No.:

10/395323

Inventors:

Ian Leslie Sayers - Redwood City CA
Paul Jan Long - San Francisco CA
Sheausong Yang - Saratoga CA

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04M 100

US Classification:

455555, 455461, 4555541, 4555542

Abstract:

A communication system formed by a private network that includes a private wireless network. The communication system includes a public wireless network using a public wireless protocol, such as GSM, and includes public networks, such as PSTN, ISDN and the Internet, using a wired protocol, such as IP. The private network also includes a local area network (LAN) and the private network connects to the public networks using a wired packet protocol, such as IP. The public and private wireless networks operate with the same public wireless protocol, such as GSM, and the private wireless network additionally operates with a wired packet protocol, such as IP. The communication system permits users to operate freely in both public and private wireless networks using standard mobile stations while achieving high private network data rates. The communication system uses normal wireless handsets or other mobile or fixed stations without need for any modifications.

US Patent:

6993359, Jan 31, 2006

Filed:

Apr 28, 2000

Appl. No.:

09/561100

Inventors:

Ian Leslie Sayers - Redwood City CA, US
Paul Jan Long - San Francisco CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04B 1/38

US Classification:

4555541, 4554261, 455461

Abstract:

A communication system formed by a private wireless network that can be used with public wireless networks using a public wireless protocol, such as GSM, and typically includes public networks, such as PSTN, ISDN and the Internet, using a wired-packet protocol, such as IP. The private network also typically includes a local area network (LAN) and the private network typically connects to the public networks using the wired-packet protocol, such as IP. The public and private wireless networks operate with the same public wireless protocol, such as GSM, and the private wireless network additionally operates with the wired-packet protocol, such as IP. In this environment, multiple wireless cells are present and inter-cell handovers employ multiple protocols including the wired-packet protocol.

US Patent:

7469142, Dec 23, 2008

Filed:

Sep 6, 2005

Appl. No.:

11/221237

Inventors:

Ian Leslie Sayers - Redwood City CA, US
Paul Jan Long - San Francisco CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04Q 7/20
H04B 7/216

US Classification:

455436, 455439, 455442, 370335

Abstract:

A communication system formed by a private wireless network that can be used with public wireless networks using a public wireless protocol, such as GSM, and typically includes public networks, such as PSTN, ISDN and the Internet, using a wired-packet protocol, such as IP. The private network also typically includes a local area network (LAN) and the private network typically connects to the public networks using the wired-packet protocol, such as IP. The public and private wireless networks operate with the same public wireless protocol, such as GSM, and the private wireless network additionally operates with the wired-packet protocol, such as IP. In this environment, multiple wireless cells are present and inter-cell handovers employ multiple protocols including the wired-packet protocol.

US Patent:

7486966, Feb 3, 2009

Filed:

Oct 12, 2004

Appl. No.:

10/962790

Inventors:

Ian Leslie Sayers - Redwood City CA, US
Paul Jan Long - San Francisco CA, US
Sheausong Yang - Saratoga CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04M 1/00

US Classification:

455555, 455461, 4555541, 4555542

Abstract:

A communication system formed by a private network that includes a private wireless network. The communication system includes a public wireless network using a public wireless protocol, such as GSM, and includes public networks, such as PSTN, ISDN and the Internet, using a wired protocol, such as 1P. The private network also includes a local area network (LAN) and the private network connects to the public networks using a wired packet protocol, such as IP. The public and private wireless networks operate with the same public wireless protocol, such as GSM, and the private wireless network additionally operates with a wired packet protocol, such as IP. The communication system permits users to operate freely in both public and private wireless networks using standard mobile stations while achieving high private network data rates. The communication system uses normal wireless handsets or other mobile or fixed stations without need for any modifications.