Loading patent…
AssigneeFrance Telecom
InventorsAbdelmalik Bachir, Ludovic Samper, Dominique Barthel
Estimating the term…
A method of communication, on a radio channel, between at least two nodes is disclosed. This method is adapted for emitting on the channel in an alternating manner, comprising formulating, by one of the two nodes, termed the emitter, a signal comprising a preamble comprising a series of frames, followed by the data frame, at least one first frame of the preamble comprising a copy of the data frame and indicating a number of frames of the preamble separating this first frame from the data frame and emitting, by the emitter node, of the signal thus formulated on the radio channel.
Method of communication, on a radio channel, between at least two nodes, the method comprising:
An emitter station for forming a node, the station comprising:
A receiver station for forming a node able to listen intermittently to a radio channel, the said station comprising:
A non-transitory storage medium, installed on a radio emitter, having computer program instructions stored thereon, that when executed on the radio emitter cause the emitter to:
A non-transitory storage medium, installed on a radio receiver, having computer program instructions stored thereon, that when executed on the radio receiver cause the receiver to:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
Drawings are temporarily unavailable. Open the PDF at USPTO
No references of this kind are recorded.
Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass:…
By adapting the channel coding: rate matching, e.g. puncturing or repetition of code symbols
Formatting: adaptive formatting arrangements particular to signalling, e.g. variable amount of bits
Automatic repetition systems, e.g. Van Duuren systems: arrangements specially adapted for the transmitter end
About 2 years 9 months of term left · ends 27 Jul 2029 (estimated)
This application is the U.S. national phase of the International Patent Application No. PCT/FR2007/051475 filed Jun. 19, 2007, which claims the benefit of French Application No. 06 05492 filed Jun. 20, 2006, the entire content of which is incorporated herein by reference.
The present invention relates to communication techniques used in telecommunication networks. It applies particularly, but not exclusively, in ad hoc networks.
Ad hoc networks are communication networks devoid of fixed infrastructure. A certain number of wireless stations are equipped with radio emission and/or reception means and with appropriate protocols to form the nodes of the ad hoc network.
Other characteristics and advantages of the invention will be further apparent on reading the description which follows. The latter is purely illustrative and should be read in conjunction with the appended drawings in which:
FIG. 1 shows a signal which is emitted on the radio channel by an emitter node destined for a receiver node according to a preamble sampling protocol;
FIG. 2 shows the emitter node dispatching three first copies of the data frame;
In FIG. 3 is represented a telecommunications network 1, in the case considered, an ad hoc network, comprising a plurality of emitting-receiver stations 2 each intended to constitute a node of the ad hoc network 1.
A node 2 comprises a processing module 5, an emission/reception module 6 which ensures the processing operations for the physical layer and link layer (layers 1 and 2 of the OSI model) with a view to exchanging signals with a neighbouring node by way of a shared radio channel 4. The emission/reception module 6 is linked to an antenna 6′. The emission/reception module 6 is turned on/off by control means 7.
When a node 2, for example node X, has to transmit a data frame TD to a neighbouring node Y, the processing module 5 of node X formulates a corresponding signal. This signal comprises a preamble followed by the data frame TD. Then node X transmits by way of its wireless interface module 6 and of its antenna 6′ the signal thus formulated on the radio channel 4.