Michael Keith Ritter

US Patent:

6735178, May 11, 2004

Filed:

May 10, 2000

Appl. No.:

09/568658

Inventors:

Arty Srivastava - Santa Clara CA
Michael W. Ritter - Los Altos CA
Robert J. Friday - Los Gatos CA

Assignee:

Ricochet Networks, Inc. - Denver CO

International Classification:

H04L 1228

US Classification:

370252, 370351

Abstract:

In an imperfect mesh network or in a star network, the directionality of transmission and reception at each node, as through a directional antenna, is selected to maximize combined or multiple-link end-to-end information throughput. To this end, a maximum throughput metric is provided for separate links through the network between a source node and a collection of end-point nodes to be optimized which is based on 1) measurement of link quality with respect to neighboring nodes and 2) information about link quality and other factors related to propagation delay or âlatencyâ as reported to it by other nodes regarding their neighboring links, and 3) based upon the busy-ness or capacity utilization at each link.

US Patent:

6999441, Feb 14, 2006

Filed:

Jun 27, 2001

Appl. No.:

09/894843

Inventors:

David L. Paulsen - Mountain View CA, US
Michael W. Ritter - Los Altos CA, US

Assignee:

Ricochet Networks, Inc. - Denver CO

International Classification:

H04J 3/00

US Classification:

370337, 370321, 370347, 370310

Abstract:

In a mesh communication network, a poll request protocol (PRP) is provided in which a special packet is broadcast by the congested node when it is ready to provide services. The controlling node (usually the more congested node) broadcasts a packet to request poll signals from nodes desiring resources of the controlling node. The contending nodes then have equal chances to request the services of the controlling node by sending poll signals. The controlling node can then arbitrate the requests, determine the most fair and efficient use of its resources, and broadcast a scheduling packet to inform the contending nodes when to inform the contending nodes of controlling node scheduling. The contending nodes then send their packets to the controlling node without lost packets caused by congestion collisions. The controlling node can then send data to the contending nodes also without lost packets.

US Patent:

7155526, Dec 26, 2006

Filed:

Jun 19, 2002

Appl. No.:

10/176198

Inventors:

Mayank S. Chaudhary - Union City CA, US
Allam Zaheer Ahmed - Fremont CA, US
Nishi Kant - San Jose CA, US
Chih-hsin Alan Chuang - Mountain View CA, US
Michael W. Ritter - Los Altos CA, US

Assignee:

Azaire Networks, Inc. - Santa Clara CA

International Classification:

G06F 15/16

US Classification:

709229, 709249, 455411, 370285, 713166

Abstract:

A method and system are provided for integrating a WLAN radio access network into a GSM/GPRS core network wherein gateways are added that transparently transport services between the two networks. A further aspect of the invention is secure authentication. The system has two network elements: a Radio Link Manager (RLM) and a Radio Access Controller (RAC), and a software application, a Multi-Link Client (MLC) to control the functionality of the integration and the authentication. The MLC resides on a user device. The RAC provides protocol stacks and interworking functions to allow the MLC to talk to a Home Location Register (HLR). The RLM and MLC set up a “tunnel” employing, for example, PPP over Ethernet (PPPOE), and all of the data packets received on this tunnel are forwarded by the RLM to the Gateway GPRS Support Node (GGSN over a further tunnel using the GPRS Tunneling Protocol (GTP).

US Patent:

20060098604, May 11, 2006

Filed:

Dec 9, 2005

Appl. No.:

11/297947

Inventors:

George Flammer - Cupertino CA, US
David Paulsen - Mountain View CA, US
Michael Ritter - Los Altos CA, US

Assignee:

Ricochet Networks, Inc. - Denver CO

International Classification:

H04B 7/212

US Classification:

370337000, 370449000

Abstract:

In a mesh communication network, a poll request protocol (PRP) is provided in which a special packet is broadcast by the congested node when it is ready to provide services. The controlling node (usually the more congested node) broadcasts a packet to request poll signals from nodes desiring resources of the controlling node. The contending nodes then have equal chances to request the services of the controlling node by sending poll signals. The controlling node can then arbitrate the requests, determine the most fair and efficient use of its resources, and broadcast a scheduling packet to inform the contending nodes when to inform the contending nodes of controlling node scheduling. The contending nodes then send their packets to the controlling node without lost packets caused by congestion collisions. The controlling node can then send data to the contending nodes also without lost packets.

US Patent:

20080086685, Apr 10, 2008

Filed:

May 7, 2007

Appl. No.:

11/801116

Inventors:

James Janky - Los Altos CA, US
Michael Ritter - Denver CO, US

International Classification:

G06F 15/00
G06F 3/00

US Classification:

715700

Abstract:

A method and system for delivering tailored asset information to a device are disclosed. According to one embodiment, a method accesses a database comprising information from a first reporting source about an asset and information from a second reporting source about the asset. A pre-defined user selectable criteria is then utilized to select portions of the information from the first reporting source and the information from the second reporting source. A tailored asset information report is then generated, wherein the tailored asset information report comprises the pre-defined portions of the information about the asset. In so doing, a layout of the tailored asset information report is provided based on a graphical user interface (GUI).

US Patent:

57456992, Apr 28, 1998

Filed:

Oct 18, 1996

Appl. No.:

8/733540

Inventors:

Kerry Eugene Lynn - Redwood City CA
Alan Oppenheimer - Cupertino CA
Michael Walker Ritter - Los Altos CA
Jonathan Marcus Zweig - Cupertino CA
Jeffery L. Mullins - San Jose CA

Assignee:

Apple Computer, Inc. - Cupertino CA

International Classification:

G06F 1200

US Classification:

39520075

Abstract:

A method and apparatus for assigning a unique network address to a first node within a network which is arbitrarily connected. The first node may include a shared network resource, such as a networked printer device, or a modem, in addition to a stand-alone computer system. The network may include a network which is wireless, wherein various nodes comprise radio transceiver circuitry, including radio frequency modems. A first provisional network address for use in assigning the unique network address is determined by the first node. The first node broadcasts probes containing the provisional network address until a first probe response to one of the probes is received or a first interval of time elapses. If the first probe response to one of the probes is received, then the first node determines a second provisional network address and repeats selection of the address and broadcasting, until no probe response is received in the first interval of time. Using the first provisional network address, the first node broadcasts forward probes in the network until a second probe response to one of the forward probes is received by the first node or a second period of time has transpired.

US Patent:

55700845, Oct 29, 1996

Filed:

Jun 28, 1994

Appl. No.:

8/268765

Inventors:

Michael W. Ritter - Los Altos CA
John Bettendorff - San Jose CA
George H. Flammer - Cupertino CA
Brett D. Galloway - Campbell CA

Assignee:

Metricom, Inc. - Los Gatos CA

International Classification:

H04Q 300
H04J 324

US Classification:

34082505

Abstract:

In a packet communication system, loose source routing is employed to permit communication over networks of disparate types, including geographic and path-unaware types. No information resides on a wired access point (WAP). All of the intelligence of the system resides in Name Servers, which provide opaque addresses that end nodes (radios) in a wireless cloud can use to send packets to other end nodes (radios) in other wireless clouds. (A cloud is the set of radios serviced by a particular WAP. ) According to the invention, the method employs an ordered list called a path and the network address of a packet consists of such an ordered list of addresses with a "marker" that flags the current destination of the packet and a "direction bit" that tells which direction on the list the next destination is. Each address in the path is type-length-value (TLV) encoded. The address has preferably a 4 bit "type" field, followed by a 4 bit "length" field (indicating length in words) of the value, and then the actual "value" of the address.