Communication method and apparatus

Patent metadata

Field	Value
Publication number	US-9019873-B2
Application number	US-201213655249-A
Country	US
Kind code	B2
Filing date	Oct 18, 2012
Priority date	Oct 19, 2011
Publication date	Apr 28, 2015
Grant date	Apr 28, 2015

Abstract

Methods and apparatus for communicating between a first node and a plurality of second nodes in a network, including a first uplink mode in which a first message is transmitted from multiple second nodes in sequence, and a second uplink mode in which a second message is sent from only a subset of nodes. A first receiving node evaluates communication path information based on messages received in the first uplink mode and returns this information via an acknowledgement to allow the subset to be selected. The first message from multiple nodes includes sequence information to allow the first node to acknowledge at an appropriate point in time. This is particularly applicable where multiple spatially separated antennas offer a receiver several observations of the same signal in an antenna diversity scheme.

First claim

The invention claimed is:

1. A method of communicating between a first node and a plurality of second nodes in a network, the method comprising:
in a first uplink mode, transmitting a first message from all of the plurality of second nodes in sequence, across a corresponding plurality of communication paths, over a first transmission period;
receiving at one or more of said second nodes, during a first reception period, a first acknowledgement message from said first node in res…

Assignees

• Canon Kk

Inventors

• Caillerie Alain
• El Kolli Yacine

Classifications

• H04L1/1854 Primary

  Electricity · mapped topic

• H04B7/04 Primary

  Electricity · mapped topic

• H04L1/1671

  Electricity · mapped topic

• H04L5/16

  Electricity · mapped topic

• H04W84/12

  Electricity · mapped topic