US 7,626,966 B1Granted

Ad hoc wireless communication system

AssigneeIdealab

InventorsKarl A. Ruiter, Joseph Olivier, Clark Crawford

Life of this patent

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Abstract

A communication device for use in an ad hoc network is disclosed. The device is adapted to concurrently (a) communicate directly with other network nodes, (b) communicate indirectly with other network nodes via intermediate network nodes, and (c) serve as an intermediate network node with respect to other network nodes indirectly communicating with one another. When implementing unicast communications, the communication device employs a CSMA protocol with which to identify and reserve available communication slots defined in accordance with a TDMA protocol without the use of a beacon signal. When implementing multicast communications, the communication device employs a stochastic re-transmission scheme that ensures widespread dissemination of messages with minimal flooding.

Claims16

Dependent claims

A handheld, mobile communication device adapted to operably couple to a plurality of mobile nodes in an ad hoc network, the device comprising:

a link management module for establishing a wireless communication link with at least one of the plurality of mobile nodes;
wherein the link management module is adapted to:
receive at least one message from the plurality of nodes, each message associated with a plurality of periodic transmission slots;
identify one or more of the transmission slots of a plurality of transmission slots that are available for transmitting to at least one node of the plurality of mobile nodes;
and
broadcast a slot reservation request to reserve one or more of the plurality of available transmission slots;
and
a call management module adapted to:
transmit, during the one or more reserved slot, a first set of one or more units of voice data generated at the communication device;
and
relay, during the one or more reserved slot, a second set of one or more units of voice data received from one of the plurality of mobile nodes.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/327,192Filed 6 Jan 2006 · us provisional application
Priority: 6 Jan 2005
Granted: 1 Dec 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

H04M 1/725
Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection: cordless telephones
H04M 1/72513
Radio link set-up procedures: on hold, intercom or transfer communication modes
H04W 40/28
Connectivity information management, e.g. connectivity discovery or connectivity update: for reactive routing
H04M 1/72412
By interfacing with external accessories: using two-way short-range wireless interfaces