COMMUNICATION SYSTEM ALLOWING NETWORK NODES TO EFFICIENTLY ESTABLISH COMMUNICATIONS WITH A CONTROLLER

• US 20110170677A1
• Filed: 03/23/2011
• Published: 07/14/2011
• Est. Priority Date: 06/24/1994
• Status: Active Grant

• Current Assignee: GPNE Corp.
• Original Assignee: GPNE Corp.
• Inventors: Tsui, Po S., Wong, Gabriel K.
• Granted Patent: US 8,311,020 B2
• Time in Patent Office: Days
• US Class Current: 379/90.01
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 12/08 Access security
• CPC Class Codes: H04W 28/26 Resource reservation
• CPC Class Codes: H04W 36/08 Reselecting an access point
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 68/02 Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 74/06 using polling
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 84/02 Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
• CPC Class Codes: H04W 84/022 One-way selective calling networks, e.g. wide area paging
• CPC Class Codes: H04W 84/025 with acknowledge back capability
• CPC Class Codes: H04W 88/022 Selective call receivers
• CPC Class Codes: H04W 88/185 Selective call encoders for paging networks, e.g. paging centre devices
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

A communication system is provided that includes a controller and a system to allow efficient transmission of information with a plurality of nodes. The information includes an alignment signal provided from the controller to enable the nodes to align their response signals. The information further includes node identification information. Once alignment and identification occur, nodes can then transmit packet data to the controller.

Claims

1. A first node in a data network including a plurality of nodes, the first node comprising:

a computational device and a memory for storing identification related information of the first node, said computational device configured to;

receive a first signal, the first signal including information used to align a response signal from the first node;

randomly generate information within said first node and store said randomly generated information in the memory of the first node;

send the response signal from the first node, wherein said response signal includes the randomly generated information;

receive a second signal, wherein a portion of the second signal is derived from the randomly generated information contained in the response signal;

said second signal enabling sending of a subsequent-response signal that uniquely identifies the first node;

determine whether the second signal contains information which matches the randomly generated information stored in said memory of the first node;

send the subsequent-response signal which comprises a packet that includes identification related information of the first node, said subsequent-response signal from the first node being sent only if the portion of the second signal matches the randomly generated information that is stored in the first node;

wherein the first signal, the response signal, the second signal and the subsequent-response signal occur on a common frequency channel; and

wherein a time for sending the subsequent-response signal occurs with an alignment that is varied with respect to a time said first signal was received.

2. The first node of claim 1, wherein the packet sent from the first node within the subsequent-response signal optionally contains message information.

3. The first node of claim 1, wherein message information is sent from the first node at a later period than the subsequent-response signal.

4. A controller in a data network, the data network including a plurality of nodes including a first node, the controller comprising:

at least one processor;

a memory providing code to the at least one processor; and

at least one interface configured by the at least one processor to;

transmit a first signal from the controller, the first signal including information used to align a response signal;

receive the response signal, wherein said response signal includes a portion that is randomly generated;

transmit a second signal from the controller, wherein a portion of the second signal is derived from the randomly generated portion of the response signal;

said second signal enabling transmission of a subsequent-response signal;

receive the subsequent-response signal which comprises a packet that includes identification related information;

wherein the first signal, the response signal, the second signal and the subsequent-response signal occur on a common frequency channel; and

wherein a time for receiving the subsequent-response signal occurs with an alignment that is varied with respect to a time said first signal was sent.

5. The controller of claim 4, wherein the packet received within said subsequent-response signal optionally contains message information.

6. The controller of claim 4, wherein message information is received at a later period than the subsequent-response signal.

7. The controller of claim 4,

wherein the controller may be further configured to transmit a subsequent-second-signal, and

wherein a period in time between when the controller transmits the second signal and when the controller transmits the subsequent-second-signal varies in accordance with randomly-generated-information.