Method for transitioning between coordination modes for interfering neighbor networks

• US 7,822,058 B2
• Filed: 03/23/2005
• Issued: 10/26/2010
• Est. Priority Date: 11/07/2003
• Status: Expired due to Fees

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Laboratories of America Incorporated (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Ayyagari, Deepak, Chan, Wai-Chung
• Primary Examiner(s): Harper; Kevin C
• Assistant Examiner(s): CHAN, SAI MING
• Application Number:
  US11/089,756
• Publication Number:
  US 20050193116A1
• Time in Patent Office: 2,043 Days
• Field of Search: 370/445, 370/461, 370/437, 370/462, 370/465, 455/63.1
• US Class Current: 370/437
• CPC Class Codes: H04L 2012/2843 Mains power line
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0039 Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
• CPC Class Codes: H04L 5/0041 Frequency-non-contiguous
• CPC Class Codes: H04L 5/0046 Determination of how many bits are transmitted on different sub-channels
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 28/16 Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• 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 74/08 Non-scheduled access, e.g. ALOHA hybrid access H04W74/02
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals

Abstract

Embodiments of the present invention comprise methods and systems for establishing, managing and transitioning between network coordination modes.

Claims

1. A method for managing network resources in the presence of interfering neighbor networks, said method comprising:

a) coordinating communication between devices in a first network with a first Quality of Service Controller (QoSC) using a first coordination mode, wherein said QoSC is a controlling authority managing bandwidth allocation between network devices with a method comprising alternative usage of coordination modes comprising an uncoordinated mode wherein said first network is operated independent of potentially interfering networks, a coordinated mode wherein said first network'"'"'s bandwidth is shared with interfering networks and a controlled mode wherein contention access protocols are used and wherein said first coordination mode is one of said coordination modes;

b) switching from said first coordination mode to a second coordination mode of said coordination modes when an interfering beacon detection condition occurs in relation to a beacon from a second QoSC in a second network that interferes with said first network.

2. A method as described in claim 1 wherein said interfering beacon detection condition is the absence of a detectable beacon after a beacon has first been detected.

3. A method as described in claim 1 wherein said interfering beacon detection condition is the presence of a detectable beacon after an absence of a detectable beacon.

4. A method as described in claim 1 wherein said beacon detection condition is the inability to decode a Beacon message.

5. A method for managing network resources in the presence of interfering neighbor networks, said method comprising:

a) coordinating communication between devices in a first network with a first Quality of Service Controller (QoSC) using a first coordination mode, wherein said QoSC is a controlling authority managing bandwidth allocation between network devices with a method comprising alternative usage of coordination modes comprising an uncoordinated mode wherein said first network is operated independent of potentially interfering networks, a coordinated mode wherein said first network'"'"'s bandwidth is shared with interfering networks and a controlled mode wherein contention access protocols are used and wherein said first coordination mode is one of said coordination modes;

b) detecting a beacon from a second QoSC with a second network that interferes with said first network;

c) switching from said first coordination mode to a second coordination mode of said coordination modes in response to said detecting, wherein said second coordination mode coordinates network traffic in said first network and said second network.

6. A method as described in claim 5 wherein said second coordination mode is said coordinated mode comprising a contention-free period with allocations for connections between devices in said first network and for connections between devices in said second network.

7. A method as described in claim 5 wherein said second coordination mode is said controlled mode comprising a contention period wherein devices in said first network and said second network are prevented from transmission when a device in either of said first network or said second network has started, but not completed a transmission.

8. A method as described in claim 5 wherein said second coordination mode comprises a carrier sense multiple access (CSMA) mode, which allocates bandwidth to said first network and said second network.

9. A method for managing network resources in the presence of interfering neighbor networks, said method comprising:

a) coordinating communication between devices in a first network and a second network with a first Quality of Service Controller (QoSC) and a second QoSC using a first coordination mode, wherein said first QoSC and said second QoSC are a controlling authorities managing bandwidth allocation between network devices with methods comprising alternative usage of coordination modes comprising an uncoordinated mode wherein said first network is operated independent of said second network, a coordinated mode wherein said first network'"'"'s bandwidth and said second network'"'"'s bandwidth are shared and a controlled mode wherein a contention access protocol is used for said first network and said second network and wherein said first coordination mode is one of said coordination modes;

b) detecting the absence of a beacon from said second QoSC with said first QoSC;

c) switching from said first coordination mode to a second coordination mode of said coordination modes with said first QoSC in response to said detecting, wherein said second coordination mode is said uncoordinated mode that does not account for traffic in said second network.

10. A method as described in claim 9 wherein said first communication mode is said coordinated mode and said second communication mode is said uncoordinated mode.

11. A method as described in claim 9 wherein said first coordination mode is said coordinated mode.

12. A method as described in claim 9 wherein said first coordination mode is said controlled mode.