US20160044577A1 - Method and system for autonomous channel coordination for a wireless distribution system - Google Patents

Method and system for autonomous channel coordination for a wireless distribution system Download PDF

Info

Publication number
US20160044577A1
US20160044577A1 US14/922,291 US201514922291A US2016044577A1 US 20160044577 A1 US20160044577 A1 US 20160044577A1 US 201514922291 A US201514922291 A US 201514922291A US 2016044577 A1 US2016044577 A1 US 2016044577A1
Authority
US
United States
Prior art keywords
ccg
ap
member
aps
wds
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/922,291
Inventor
Paul Marinier
Marian Rudolf
Maged M. Zaki
Vincent Roy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
InterDigital Technology Corp
Original Assignee
InterDigital Technology Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US73277905P priority Critical
Priority to US11/554,786 priority patent/US8194599B2/en
Priority to US13/485,429 priority patent/US8411636B2/en
Priority to US13/755,347 priority patent/US9198082B2/en
Application filed by InterDigital Technology Corp filed Critical InterDigital Technology Corp
Priority to US14/922,291 priority patent/US20160044577A1/en
Publication of US20160044577A1 publication Critical patent/US20160044577A1/en
Application status is Abandoned legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic or resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18Negotiating wireless communication parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/005Resource management for broadcast services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/18Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H04W84/20Master-slave selection or change arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02Resource partitioning among network components, e.g. reuse partitioning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10Dynamic resource partitioning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/02Inter-networking arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/16Interfaces between hierarchically similar devices
    • H04W92/20Interfaces between hierarchically similar devices between access points

Abstract

A method and system for autonomous channel coordination for a wireless distribution system (WDS) are disclosed. A wireless communication system includes a plurality of access points (APs) and the APs communicate each other via a WDS. A coordinated channel group (CCG) of a plurality of member APs is established. The member APs of the CCG camp on a WDS channel used for the WDS among the member APs of the CCG. One AP among the member APs of the CCG is designated as a master AP. The master AP coordinates with other member APs of the CCG for selecting and configuring the WDS channel for the CCG and addition and deletion of member APs. By allowing APs to define a CCG, changes of the WDS channel are performed autonomously while maintaining connectivity.

Description

    CROSS REFERENCE TO RELATED APPLICATION
  • This application claims the benefit of U.S. Provisional Application No. 60/732,779 filed Nov. 2, 2005, which is incorporated by reference as if fully set forth.
  • FIELD OF INVENTION
  • The present invention is related to wireless communication systems. More particularly, the present invention is related to a method and system for autonomous channel coordination for a wireless distribution system (WDS).
  • BACKGROUND
  • In a WLAN system such as 802.11, stations (STAs) within a basic service set (BSS) share the same frequency channel to communicate with each other. In an infrastructure-mode BSS, an access point (AP) relays traffic to and from a distribution system (DS). Many BSSs can be connected to the DS through their APs. Communication between APs and other nodes within a DS can be supported by any medium access control (MAC) scheme, such as IEEE 802.3 in the case where a wired infrastructure exists. If a wired infrastructure does not exist, communication between APs can also take place wirelessly. A set of APs communicating wirelessly constitutes a WDS.
  • For successful communication between two APs in a WDS, the sending AP must transmit a packet on the channel used by the receiving AP. Generally, APs may choose the channel, (i.e., WDS channel), from a plurality of available channels to communicate with other APs. Typically, the WDS channel is same as the BSS channel used by an AP to transmit and receive packets to and from STAs in its own BSS. In the prior art, the WDS channel is configured manually by a system administrator and the APs are not capable of dynamically changing the WDS channel autonomously.
  • However, the manual configuration and setup is cumbersome, error-prone and costly. In addition, the most suitable WDS channel for communication within the WDS changes dynamically on a short-term basis due to changes in interference and traffic conditions. It is not realistic to manually keep track of these changes and change the WDS channel.
  • Therefore, it would be desirable to provide a method and system for autonomously configuring the WDS channel while maintaining connectivity within the WDS.
  • SUMMARY
  • The present invention is related to a method and system for autonomous channel coordination for a WDS. A wireless communication system includes a plurality of APs and the APs communicate each other via a WDS. A coordinated channel group (CCG) comprising a plurality of member APs is established. The member APs of the CCG camp on a WDS channel used for the WDS among the member APs of the CCG. One AP among the member APs of the CCG is designated as a master AP. The master AP coordinates with other member APs of the CCG for selecting and configuring the WDS channel for the CCG and addition and deletion of member APs. By allowing APs to define a CCG, changes of the WDS channel are performed autonomously while maintaining connectivity within the WDS.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows an exemplary wireless communication system with a WDS in which the present invention is implemented.
  • FIG. 2 is a signaling diagram of a process for exchanging messages for joining a CCG between an AP and a master AP in accordance with the present invention.
  • FIG. 3 is a signaling diagram of a process for exchanging messages for leaving a CCG between an AP and a master AP in accordance with the present invention.
  • FIG. 4 is a signaling diagram of a process for exchanging messages for channel change between an AP and a master AP in accordance with the present invention.
  • FIG. 5 is a signaling diagram of a process for exchanging messages for reselecting a master AP between an AP and a master AP in accordance with the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Hereafter, the terminology “STA” includes but is not limited to a wireless transmit/receive unit (WTRU), a user equipment (UE), a fixed or mobile subscriber unit, a pager, or any other type of device capable of operating in a wireless environment. When referred to hereafter, the terminology “AP” includes but is not limited to a base station, a Node-B, a site controller or any other type of interfacing device in a wireless environment.
  • The features of the present invention may be incorporated into an integrated circuit (IC) or be configured in a circuit comprising a multitude of interconnecting components.
  • FIG. 1 shows an exemplary wireless communication system 100 with a WDS in which the present invention is implemented. The system 100 includes a plurality of APs 102 a-102 d. Each of the APs 102 a-102 d serves its own BSS 106 a-106 d, (or independent BSS, hereinafter collectively “BSS”), respectively. The APs 102 a-102 d are capable of sending WDS traffic via a WDS established among the APs 102 a-102 d. The WDS traffic may be a packet sent from an AP in one BSS to an AP in another BSS, or a packet sent from a STA in one BSS to a STA in another BSS. The APs 102 a-102 d camp on a WDS channel used for the WDS traffic so that the APs 102 a-102 d transmit and receive WDS traffic on the common WDS channel.
  • The APs 102 a-102 d may be equipped with a single radio transceiver, (i.e., the APs need to share their radio transceiver for both their own BSS traffic and WDS traffic), or more than one radio transceiver. The WDS channel that the APs 102 a-102 d camp on may be different from the channel used to serve STAs 104 a-104 d in their own BSS 106 a-106 d, (i.e., BSS channel). If the WDS channel is different from the BSS channel, the AP 102 a-102 d should be able to simultaneously receive packets on more than one channel. An AP 102 a-102 d may be able to camp on more than one WDS channel.
  • In accordance with the present invention, at least one coordinated channel group (CCG) comprising a plurality of member APs is established. For example, in FIG. 1, APs 102 a-102 c belong to a CCG 108 and a common WDS channel is used for the WDS traffic in the CCG 108. In accordance with the present invention, the WDS channel may be dynamically changed and configured by coordinating APs 102 a-102 c in the CCG 108. By being part of the CCG 108, the APs 102 a-102 c are ensured of maintaining connectivity with all other APs 102 a-102 c that belong to the CCG 108. Furthermore, the APs 102 a-102 c may be ensured of maintain connectivity with APs, (such as AP 102 d), belonging to other CCGs if certain rules are followed in the assignment of CCGs to APs.
  • Certain APs may or may not have the capability of transmitting packets to other APs of the WDS on a frequency channel different from the one they are camping on. In order to maintain connectivity with other APs of the WDS, an AP not equipped with this capability should never create a new CCG unless it is the only AP being active in the environment. Similarly, the selection of the master of a CCG could be performed manually through operation, administration and maintenance (OAM). If this approach is selected, the APs not selected as CCG master in the OAM configuration should be precluded from attempting to create a new CCG (in which case they would automatically become master of the newly created CCG). An AP may be part of as many CCGs as the number of channels on which it is capable of camping.
  • One of the APs 102 a-102 c of the CCG 108 is designated as a master AP, (e.g., AP 102 a). The master AP may be designated autonomously or by manually through OAM. The master AP 102 a accepts or rejects requests from other non-member APs, (such as AP 102 d), to be a part of the CCG 108, collects relevant information from the member APs 102 b, 102 c within the CCG 108 to make a WDS channel change decision, (including requests from member APs 102 b, 102 c to perform a channel change), executes a WDS channel change, and executes changes of other parameters, (such as transmission power, a clear channel assessment (CCA) mode (or the like), admission control parameters or other relevant operational settings), that may affect the performance of the system. CCA is a function that determines if the medium is busy in IEEE 802.11. The CCA mode (or something similar in other types of systems) defines how this determination is made exactly, (e.g., compare to a threshold or not, nature of the signal, or the like).
  • An AP 102 a-102 c that is part of the CCG 108 for a given WDS channel periodically broadcasts, multicasts or unicasts a CCG indicator (CCGI) on the WDS channel. The CCGI is a unique identifier, (e.g., label, code, alpha-numeric designation, number, or the like). The CCGI may be included in an existing frame, (such as a beacon frame or a probe response frame), or a stand-alone (management) frame dedicated to the CCG functionality. The master AP 102 a sets a master indicator, (e.g., a flag, a bit field or an identification string), associated to the CCGI to indicate that the AP 102 a is the master of the CCG 108. Only the master AP 102 a sets the master indicator.
  • FIG. 2 is a signaling diagram of a process 200 for exchanging messages for joining a CCG between a non-member AP and a master AP in accordance with the present invention. A non-member AP, (such as AP 102 d), desiring to join an existing CCG 108 sends a CCG addition request message to the master AP 102 a along with capability information of the AP 102 d and/or BSS information (step 202). The CCG addition request message includes the CCGI of the requested CCG 108.
  • The capability information includes, but is not limited to, the list of frequency channels on which the AP 102 d is capable of camping and information as to whether the AP 102 d is capable of reporting channel utilization or interference measurement. The BSS information is information related to the BSS served by the AP 102 d, (e.g., whether or not the AP 102 d is using the common channel to serve its own BSS, and, if yes, how many STAs are currently served by the AP 102 d).
  • The master AP 102 a determines whether the non-member AP 102 d should be accepted or not and responds to the non-member AP 102 d with a CCG addition response message, which indicates a positive or negative response (step 204). If the non-member AP 102 d receives a positive response, the AP 102 d becomes a part of the CCG 108 and starts broadcasting the CCGI.
  • The criteria in determining whether the non-member AP 102 d should be accepted in the CCG 108 include, but are not limited to, insufficient capabilities, (e.g., not being able to receive on certain channels), and the number of APs included in the CCG 108, (since if too many APs are included in the CCG 108, it may result in poor performance or unacceptable delays in changing the WDS channel of the CCG 108), or any other relevant factors. The master AP 102 a may measure some factors by itself and those factors need not be directly communicated by the non-member AP 102 d. For example, the master AP 102 a may measure channel loading, interference, path loss between the non-member AP 102 d and the master AP 102 a or received signal strength from the non-member AP 102 d, or the like.
  • The CCG addition request message may be included in any conventional frame, (e.g., a probe request message or an association request message), or may be included in a new stand-alone (management) frame. The CCG addition response message may also be included in any conventional frame, (e.g., a probe response frame or an association response frame), or may be included in a new stand-alone (management) frame.
  • FIG. 3 is a signaling diagram of a process 300 for exchanging messages for leaving a CCG between an AP and a master AP in accordance with the present invention. A member AP, (such as AP 102 b), desiring to leave the CCG 108 sends a CCG deletion notification message to the master AP 102 a (step 302). Upon receipt of the CCG deletion notification message, the AP 102 b no longer belongs to the CCG 108. The CCG deletion notification message may be included in any conventional frame, (e.g., a disassociation message), or may be included in a new stand-alone (management) frame.
  • The member APs 102 b, 102 c of the CCG 108 preferably report measurements to the master AP 102 a of the CCG 108. The measurements to be reported include not only measurements performed by the APs 102 b, 102 c, but also any measurements reported by STAs 104 b, 104 c served by their own BSSs 106 b, 106 c if the WDS channel is same to the BSS channel used within their own BSS 106 b, 106 c. Relevant measurements that may be reported by each member AP 102 b, 102 c in support of channel management within the CCG 108 include, but are not limited to, interference levels measured on each channel, channel utilization of each channel, the number of STAs detected on each channel, and addresses or identifiers of STAs 104 b, 104 c currently associated with the APs 102 b, 102 c. If the BSS channel of the AP 102 b, 102 c is same as the WDS channel, a member AP 102 b, 102 c may notify the master AP 102 a of any relevant configuration modification, (such as the association or disassociation of a STA 104 b, 104 c served by the AP 102 b, 102 c).
  • FIG. 4 is a signaling diagram of a process 400 for exchanging messages for change of the WDS channel between a member AP 102 b, 102 c and a master AP 102 a in accordance with the present invention. A member AP 102 b, 102 c experiencing severe interference conditions on the currently selected WDS channel may send a channel change request message to the master AP 102 a for a change of the WDS channel (step 402). The channel change request message may include an order of preference for a new channel, as well as any measurement information relevant for selecting a new WDS channel.
  • Upon receipt of the channel change request message, the master AP 102 a may optionally respond the requesting AP 102 b, 102 c with a channel change response message indicating an accept or a reject of the request (step 404). The master AP 102 a then determines whether a change of the WDS channel is necessary (step 406). Alternatively, the channel change may be initiated by the master AP 102 a without receiving the channel change request message. If the master AP 102 a determines that the change of the WDS channel is necessary, the master AP 102 a sends all member APs 102 b, 102 c of the CCG 108 a channel change command to change the WDS channel to a new channel (step 412).
  • The channel change command includes timing information on which the channel change is executed. With respect to the timing of the channel change, for those member APs that use the same channel for the WDS traffic and BSS traffic on their BSSs, the master AP 102 a may consider additional time so that these APs notify the STAs of their BSSs of the channel change. The master AP 102 a may determine the additional time based on the number of STAs associated with these APs.
  • Alternatively, the master AP 102 a may send, (i.e., broadcast, multicast or unicast), a channel change prepare request message to all member APs 102 b, 102 c to inform the member APs 102 b, 102 c of the new WDS channel to which the master AP 102 a intends to switch (step 408). Each member AP 102 b, 102 c then responds with a channel change prepare response message indicating the delay necessary for them to notify their STAs 104 b, 104 c of the channel change (step 410). Based on the responses from the member APs 102 b, 102 c, the master AP 102 a determines the time at which the channel change will take place, (presumably using the highest delay reported by one of the member APs 102 b, 102 c), and signals this time with the channel change command at step 410.
  • An AP may create a new CCG. The AP that wants to create a new CCG selects a CCGI that is not used by any other CCG of the WDS. The AP first scans all frequency channels on which it is capable of receiving to detect all CCGIs in use in the WDS. To reduce the probability that the same CCGI is accidentally reused, the CCGI may be randomly selected within a predetermined range. After selection of the CCGI of the new CCG, the AP becomes the master of the newly created CCG and starts broadcasting the CCGI with the master indicator set.
  • Where two or more CCGs are setup, an AP may select a CCG to join an available CCGs. The selection of a CCG to which an AP attempts to join may be performed autonomously by an AP, or may be manually configured through an operation and maintenance (OAM). The manual selection would be desirable in case there is a small number of APs in the WDS and it is expected that based on traffic requirements and AP capabilities the best performance is achieved when the APs camp on the same WDS channel.
  • In selecting the CCG, an AP considers capabilities of the different APs. Certain APs may or may not have the capability of transmitting packets to other APs of the WDS on a channel other than the one on which they are camping. In order to maintain connectivity with other APs of the WDS, an AP not having with this capability should never create a new CCG unless it is the only AP that is active in the environment.
  • The master AP 102 a may be manually or autonomously selected and reselected. If the master AP 102 a is selected manually through OAM, the APs 102 b, 102 c not selected as a master AP 102 a are precluded from creating a new CCG (in which case they would automatically become a master AP of the newly created CCG). In manual configuration, a centrally located AP may be selected as the master AP to ensure good connectivity with other APs.
  • By default, the AP that created the CCG becomes the master AP. A master AP reselection procedure may be triggered autonomously. For example, the master AP reselection procedure is triggered when the master AP is down, when the master AP desires leave the CCG, when the master AP has not transmitted anything for a predetermined period, when the master AP unsets its master indicator indicating that the master AP relinquishes mastership, or the like.
  • In addition, any member AP 102, 102 c may trigger the master AP reselection procedure. FIG. 5 is a signaling diagram of a process 500 for exchanging messages for reselecting a new master AP between a member AP 102 b, 102 c and a current master AP 102 a in accordance with the present invention. A member AP 102 b, 102 c sends a master AP reselection request message to the master AP 102 a (step 502). Upon reception of the message, the master AP 102 a may optionally send a master AP reselection response message to the requesting AP 102 b, 102 c (step 504). The master AP 102 a then unsets its master indicator to indicate all other member APs 102 b, 102 c that a master AP reselection procedure is triggered (step 506). A master AP reselection is then performed by the member APs 102 b, 102 c and the master AP 102 a (step 508).
  • A new master AP may be selected by any appropriate means. For example, the new master AP may be selected by exchanging metrics associated with each of the APs in the CCG. For example, the metrics may be traffic volume or simply random numbers. The AP with the highest metric may be selected as a new master AP.
  • A signaling between the APs and the master AP may be realized as part of non-IEEE 802.11 protocol. For example, a generic network management protocol, such as simple network management protocol (SNMP) or extended markup language (XML) may be used to control, report and update operational parameters and settings affecting an AP's choice of the WDS channel and CCG. The parameters and settings are stored in an AP database such as a management information base (MIB). Each AP may contain a software, hardware or combined routine that on a regular or triggered basis checks for updates of the parameters and settings contained in the AP's database and adjusts the behavior of the APs accordingly. Alternatively, the software, hardware or combined routine in the AP on a regular or triggered basis checks for updates of the parameters and settings in a remote database relevant for a group of APs or all APs.
  • An L2 Ethertype or L3 control protocol may also be used to communicate signaling, bit fields and/or information elements. An AP may contain a software, hardware or combined communication routine that interfaces between the external L2 Ethertype or L3 control protocol carried over the IEEE 802.11-based WDS or BSS. This adjusts operational settings of the AP directly after receiving such a L2 Ethertype or L3 control protocol message. Alternatively, it may indirectly adjust by means of one or more intermediary databases applicable to a single AP or a group of APs.
  • Although the features and elements of the present invention are described in the preferred embodiments in particular combinations, each feature or element can be used alone without the other features and elements of the preferred embodiments or in various combinations with or without other features and elements of the present invention.

Claims (20)

What is claimed is:
1. In a wireless communication system including a plurality of access points (APs) wherein the APs communicate each other via a wireless distribution system (WDS), a method for autonomous channel coordination for the WDS, the method comprising:
establishing a coordinated channel group (CCG) comprising a plurality of member APs, the member APs of the CCG camping on a WDS channel used for the WDS among the member APs of the CCG;
designating one AP among the member APs of the CCG as a master AP; and
the master AP coordinating with other member APs of the CCG for selecting and configuring the WDS channel for the CCG.
2. The method of claim 1 wherein each member AP of the CCG broadcasts a CCG indicator (CCGI) on the WDS channel.
3. The method of claim 2 wherein the CCGI is transmitted via one of a beacon frame and a probe response frame.
4. The method of claim 2 wherein the CCGI is transmitted via a stand alone frame.
5. The method of claim 2 wherein the master AP transmits a master indicator associated with the CCGI.
6. The method of claim 1 further comprising:
a non-member AP that desires to join the CCG sending a CCG addition request message to the master AP;
the master AP determining whether or not accept the non-member AP; and
the master AP sending a CCG addition response message to the non-member AP, the CCG addition response message indicating an accept or a reject for the request.
7. The method of claim 6 wherein the CCG addition request message includes capability information of the non-member AP.
8. The method of claim 7 wherein the capability information includes at least one of a list of frequency channels that the non-member AP may support, information as to whether the non-member AP is capable of reporting channel utilization and interference measurement, and information related to a basic service set (BSS) served by the non-member AP.
9. The method of claim 6 wherein the CCG addition request message is included in one of a probe request message and an association request message.
10. The method of claim 6 wherein the CCG addition response message is included in one of a probe response message and an association response message.
11. In a wireless communication system including a plurality of access points (APs) wherein the APs communicate each other via a wireless distribution system (WDS), a system for autonomous channel coordination for the WDS, the system comprising:
a plurality of member APs configured to establish a coordinated channel group (CCG), the member APs camping on a WDS channel used for the WDS among the member APs of the CCG; and
a master AP being designated among the member APs of the CCG, the master AP being configured to coordinate with other member APs of the CCG for selecting and configuring the WDS channel for the CCG.
12. The system of claim 11 wherein each member AP of the CCG broadcasts a CCG indicator (CCGI) on the WDS channel.
13. The system of claim 12 wherein the CCGI is transmitted via one of a beacon frame and a probe response frame.
14. The system of claim 12 wherein the CCGI is transmitted via a stand alone frame.
15. The system of claim 12 wherein the master AP transmits a master indicator associated with the CCGI.
16. The system of claim 11 further comprising:
at least one non-member AP configured to send a CCG addition request message to the master AP to join the CCG, wherein the master AP determines whether or not accept the non-member AP and sends a CCG addition response message to the non-member AP indicating an accept or a reject for the request.
17. The system of claim 16 wherein the CCG addition request message includes capability information of the non-member AP.
18. The system of claim 17 wherein the capability information includes at least one of a list of frequency channels that the non-member AP may support, information as to whether the non-member AP is capable of reporting channel utilization and interference measurement, and information related to a basic service set (BSS) served by the non-member AP.
19. The system of claim 16 wherein the CCG addition request message is included in one of a probe request message and an association request message.
20. The system of claim 16 wherein the CCG addition response message is included in one of a probe response message and an association response message.
US14/922,291 2005-11-02 2015-10-26 Method and system for autonomous channel coordination for a wireless distribution system Abandoned US20160044577A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US73277905P true 2005-11-02 2005-11-02
US11/554,786 US8194599B2 (en) 2005-11-02 2006-10-31 Method and system for autonomous channel coordination for a wireless distribution system
US13/485,429 US8411636B2 (en) 2005-11-02 2012-05-31 Method and system for autonomous channel coordination for a wireless distribution system
US13/755,347 US9198082B2 (en) 2005-11-02 2013-01-31 Method and system for autonomous channel coordination for a wireless distribution system
US14/922,291 US20160044577A1 (en) 2005-11-02 2015-10-26 Method and system for autonomous channel coordination for a wireless distribution system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14/922,291 US20160044577A1 (en) 2005-11-02 2015-10-26 Method and system for autonomous channel coordination for a wireless distribution system

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US13/755,347 Continuation US9198082B2 (en) 2005-11-02 2013-01-31 Method and system for autonomous channel coordination for a wireless distribution system

Publications (1)

Publication Number Publication Date
US20160044577A1 true US20160044577A1 (en) 2016-02-11

Family

ID=37912474

Family Applications (4)

Application Number Title Priority Date Filing Date
US11/554,786 Active 2028-04-03 US8194599B2 (en) 2005-11-02 2006-10-31 Method and system for autonomous channel coordination for a wireless distribution system
US13/485,429 Active US8411636B2 (en) 2005-11-02 2012-05-31 Method and system for autonomous channel coordination for a wireless distribution system
US13/755,347 Active 2027-11-07 US9198082B2 (en) 2005-11-02 2013-01-31 Method and system for autonomous channel coordination for a wireless distribution system
US14/922,291 Abandoned US20160044577A1 (en) 2005-11-02 2015-10-26 Method and system for autonomous channel coordination for a wireless distribution system

Family Applications Before (3)

Application Number Title Priority Date Filing Date
US11/554,786 Active 2028-04-03 US8194599B2 (en) 2005-11-02 2006-10-31 Method and system for autonomous channel coordination for a wireless distribution system
US13/485,429 Active US8411636B2 (en) 2005-11-02 2012-05-31 Method and system for autonomous channel coordination for a wireless distribution system
US13/755,347 Active 2027-11-07 US9198082B2 (en) 2005-11-02 2013-01-31 Method and system for autonomous channel coordination for a wireless distribution system

Country Status (15)

Country Link
US (4) US8194599B2 (en)
EP (1) EP1946492A2 (en)
JP (2) JP4809898B2 (en)
KR (7) KR101581142B1 (en)
CN (2) CN101313526B (en)
AR (1) AR056166A1 (en)
AU (2) AU2006312041B2 (en)
BR (1) BRPI0619658A2 (en)
CA (1) CA2628375C (en)
HK (1) HK1121888A1 (en)
IL (1) IL191236A (en)
MY (1) MY143644A (en)
RU (2) RU2392743C2 (en)
TW (3) TWI436619B (en)
WO (1) WO2007055994A2 (en)

Families Citing this family (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101313526B (en) 2005-11-02 2015-04-22 美商内数位科技公司 Method and system for autonomous channel coordination for a wireless distribution system
US8199732B2 (en) * 2006-06-09 2012-06-12 Aruba Networks, Inc. Efficient multicast control processing for a wireless network
US7978667B2 (en) * 2006-11-30 2011-07-12 Kyocera Corporation Management of WLAN and WWAN communication services to a multi-mode wireless communication device
US7969930B2 (en) * 2006-11-30 2011-06-28 Kyocera Corporation Apparatus, system and method for managing wireless local area network service based on a location of a multi-mode portable communication device
US9532399B2 (en) 2006-11-30 2016-12-27 Kyocera Corporation Apparatus, system and method for managing wireless local area network service to a multi-mode portable communication device
US8102825B2 (en) * 2006-11-30 2012-01-24 Kyocera Corporation Detection of a multi-mode portable communication device at a mesh network
EP1936878A1 (en) * 2006-12-22 2008-06-25 IBBT vzw Method for channel assignment in multi-radio wireless mesh networks and corresponding network node
KR100875738B1 (en) * 2007-02-05 2008-12-26 삼성전자주식회사 Wds maintain the link, and how the access point and a channel change control for performing channel change
US8103285B2 (en) * 2007-04-19 2012-01-24 Kyocera Corporation Apparatus, system and method for determining a geographical location of a portable communication device
CN101690327B (en) * 2007-05-25 2014-03-05 皇家飞利浦电子股份有限公司 Channel change decision mechanism and method for wireless network
US8718561B2 (en) 2007-11-20 2014-05-06 Aruba Networks, Inc. Method and apparatus for detecting and avoiding interference in a communications network
US8040791B2 (en) * 2008-02-13 2011-10-18 Cisco Technology, Inc. Coordinated channel change in mesh networks
US8233433B2 (en) * 2008-02-26 2012-07-31 Kyocera Corporation Apparatus, system and method for initiating WLAN service using beacon signals
EP2104291A1 (en) * 2008-03-18 2009-09-23 Philips Electronics N.V. Method for a wireless personal area network
JP4578539B2 (en) * 2008-06-17 2010-11-10 株式会社バッファロー Wireless communication system, the wireless lan connection device, the wireless lan repeater
US8270414B2 (en) * 2008-08-20 2012-09-18 Intel Corporation Apparatus and method to dynamically handover master functionality to another peer in a wireless network
US8140085B2 (en) 2008-09-30 2012-03-20 Motorola Solutions, Inc. Method and apparatus for optimizing spectrum utilization by a cognitive radio network
US8045499B2 (en) * 2008-10-03 2011-10-25 Motorola Solutions, Inc. Method of communicating which channel is to be monitored by subscriber units that are idle in a communication system
US8358968B2 (en) * 2008-10-03 2013-01-22 Motorola Solutions, Inc. Method for selecting a channel to be monitored by subscriber units that are idle in a communication system
US8184654B2 (en) * 2008-10-03 2012-05-22 Motorola Solutions, Inc. Method for ending a call session in a communication system
US8139597B2 (en) * 2008-10-03 2012-03-20 Motorola Solutions, Inc. Method for trunking radio frequency resources
US8279991B2 (en) 2008-10-03 2012-10-02 Motorola Solutions, Inc. Method of efficiently synchronizing to a desired timeslot in a time division multiple access communication system
US8588146B2 (en) * 2008-10-23 2013-11-19 Motorola Solutions, Inc. Method and apparatus for channel selection in a wireless communication system
US8165577B2 (en) * 2009-03-19 2012-04-24 Kyocera Corporation Pilot signal transmission management
US8717983B2 (en) 2009-04-07 2014-05-06 National Taiwan University MediaTek Inc. Mechanism of dynamic resource transaction for wireless OFDMA systems
CN101873675B (en) * 2009-04-22 2015-08-19 中兴通讯股份有限公司 A multi-point transmission method and a base station coordinated transmission group information cooperative
JP5365442B2 (en) * 2009-09-17 2013-12-11 富士通株式会社 Relay station
JP5573571B2 (en) 2009-11-13 2014-08-20 ソニー株式会社 Radio communication device, radio communication system, program, and radio communication method
US8599826B2 (en) 2010-04-15 2013-12-03 Motorola Solutions, Inc. Method for synchronizing direct mode time division multiple access (TDMA) transmissions
US8503409B2 (en) 2010-04-15 2013-08-06 Motorola Solutions, Inc. Method for direct mode channel access
US9264490B2 (en) * 2010-12-23 2016-02-16 Intel Corporation Providing regulatory information to a group owner for channel selection in a wireless peer-to-peer network
US8462766B2 (en) 2011-03-07 2013-06-11 Motorola Solutions, Inc. Methods and apparatus for diffusing channel timing among subscriber units in TDMA direct mode
US20120233266A1 (en) * 2011-03-11 2012-09-13 Microsoft Corporation Peer-to-peer group with renegotiation of group owner
US9332544B2 (en) * 2011-04-11 2016-05-03 Lg Electronics Inc. Channel switching method in a medical body area network
CN102761938B (en) * 2011-04-29 2016-12-28 华为终端有限公司 A method of managing the access point and method of the Working Group on Access Point
JP5814631B2 (en) * 2011-06-01 2015-11-17 富士通株式会社 Gateway device, the node device, a communication system and a channel change method
US8539055B2 (en) * 2011-06-30 2013-09-17 Aruba Networks, Inc. Device abstraction in autonomous wireless local area networks
US9351297B2 (en) * 2012-08-27 2016-05-24 Huawei Technologies Co., Ltd. System and method for a collaborative service set
JP5648665B2 (en) * 2012-09-28 2015-01-07 ブラザー工業株式会社 Wireless lan network system, karaoke commander, and wireless terminal
KR101466917B1 (en) * 2012-12-06 2014-12-04 성균관대학교산학협력단 METHOD FOR ESTABLISHING SESSION BETWEEN APs AND METHOD FOR CONTROLLING SIGNAL INTERFERENCE BETWEEN APs
KR20140077603A (en) 2012-12-14 2014-06-24 삼성전자주식회사 Apparatus and method for managing mobility in wireless communication system
TWI491301B (en) * 2013-01-04 2015-07-01 Chicony Electronics Co Ltd Method for controlling wireless network devices and control device with wireless network function
JP5965866B2 (en) * 2013-05-09 2016-08-10 西日本電信電話株式会社 Relay apparatus, control method, and computer program
CN103338496B (en) * 2013-05-29 2016-10-19 普联技术有限公司 The method of detecting wireless bridge wireless data format and a frame address the wireless device
US9247440B2 (en) 2013-08-15 2016-01-26 Qualcomm Incorporated Automatic configuration of a network device
US9882701B2 (en) 2013-12-04 2018-01-30 Electronics And Telecommunications Research Institute Method and apparatus for allocating channel in wireless local area network
US9622218B2 (en) 2013-12-09 2017-04-11 Electronics And Telecommunications Research Institute Method and system for managing channel in wireless local area network
US20160337878A1 (en) * 2014-01-15 2016-11-17 Nokia Solutions And Networks Oy Improving network efficiency
KR101447464B1 (en) * 2014-03-10 2014-10-06 한국정보보호시스템(주) Access-point control system consists of three switch modules
US10182362B2 (en) 2014-03-28 2019-01-15 Intel IP Corporation Mechanisms of virtual clear channel assessment for Wi-Fi devices
KR20150134140A (en) 2014-05-21 2015-12-01 한국전자통신연구원 Method for avoiding interference in wireless local access networks and appratus using thereof
KR101583944B1 (en) * 2014-06-18 2016-01-22 성균관대학교산학협력단 Channel selecting method for wireless access point and allocating method of wireless access points to ap group for channel selection
US9510369B2 (en) 2014-07-22 2016-11-29 Nokia Technologies Oy Sensing and/or transmission coverage adaptation using interference information
US20160127521A1 (en) * 2014-10-31 2016-05-05 Qualcomm Incorporated Wlan extension elements
WO2016132826A1 (en) * 2015-02-19 2016-08-25 シャープ株式会社 Node, control method therefor, and control program
CN105163322B (en) * 2015-08-05 2018-08-03 福建星网锐捷网络有限公司 Species wireless network automatically extended method and system
JP2019012867A (en) * 2015-11-20 2019-01-24 シャープ株式会社 Radio communications system and base station apparatus
CN107438278A (en) * 2016-05-27 2017-12-05 华为技术有限公司 Channel management method of wireless local area network in rail transit and related equipment
US10327254B2 (en) * 2016-07-28 2019-06-18 GM Global Technology Operations LLC Method for interference management in vehicles with multiple vehicle hotspots
CN106686675A (en) * 2016-12-21 2017-05-17 电信科学技术研究院 Device and method for determining node group providing communication service for terminals
US20180332563A1 (en) * 2017-05-09 2018-11-15 Vivint, Inc. Autonomous mesh topology

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5724346A (en) * 1995-01-11 1998-03-03 Fujitsu Limited Means for maintaining connectable access points owing to movement of a mobile station between cells in a wireless LAN system
US20050174962A1 (en) * 2004-02-05 2005-08-11 David Gurevich Generic client for communication devices
US20060034235A1 (en) * 2004-08-11 2006-02-16 Iwatsu Electric Co., Ltd. Wireless LAN network system and a method for connecting access points thereof
US20060083216A1 (en) * 2004-10-20 2006-04-20 Hyun-Sun Kwack Method and system for transmitting traffic in communication system
US20060215673A1 (en) * 2005-03-11 2006-09-28 Interdigital Technology Corporation Mesh network configured to autonomously commission a network and manage the network topology
US20070030823A1 (en) * 2005-08-08 2007-02-08 Alpha Networks Inc. Wireless routing mechanism for same group and inter-group operations covering both wire network and wireless network
US20070099624A1 (en) * 2005-11-01 2007-05-03 Alpha Networks Inc. Dynamic wireless meshing network for supporting load balance and flow control

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5875179A (en) * 1996-10-29 1999-02-23 Proxim, Inc. Method and apparatus for synchronized communication over wireless backbone architecture
US6501745B1 (en) 1998-02-13 2002-12-31 Telefonaktiebolaget Lm Ericsson (Publ) Method for variable block scheduling indication by an uplink state flag in a packet data communication system
RU2168278C2 (en) 1999-07-16 2001-05-27 Корпорация "Самсунг Электроникс" Process of unrestricted access of subscribers of mobile station
US6985465B2 (en) * 2000-07-07 2006-01-10 Koninklijke Philips Electronics N.V. Dynamic channel selection scheme for IEEE 802.11 WLANs
US20030087645A1 (en) 2001-11-08 2003-05-08 Kim Byoung-Jo J. Frequency assignment for multi-cell IEEE 802.11 wireless networks
FI113515B (en) * 2002-01-18 2004-04-30 Nokia Corp Addressing wireless local area networks
US7689225B2 (en) * 2002-01-28 2010-03-30 Ntt Docomo, Inc. Method and apparatus for dormant mode support with paging
US20050201342A1 (en) * 2002-03-27 2005-09-15 Randy Wilkinson Wireless access point network and management protocol
US20030189901A1 (en) * 2002-04-03 2003-10-09 Timucin Ozugur Upstream resource management propagation system and method for use in bufferless networks
CN1315292C (en) * 2002-09-09 2007-05-09 腾讯科技(深圳)有限公司 Method for implementing network communication by identifying one user group with one number
US7522049B2 (en) * 2002-10-18 2009-04-21 Aeroscout, Ltd. Wireless local area network (WLAN) method and system for presence detection and location finding
US7350077B2 (en) * 2002-11-26 2008-03-25 Cisco Technology, Inc. 802.11 using a compressed reassociation exchange to facilitate fast handoff
CN1720755B (en) * 2002-12-16 2010-05-05 高通股份有限公司 Improved wireless network repeater and operation method thereof
US7372832B2 (en) * 2003-02-12 2008-05-13 Nortel Networks Limited Channel selection
WO2004077724A2 (en) * 2003-02-24 2004-09-10 Autocell Laboratories, Inc. System and method for channel selection in a wireless network
US20040185845A1 (en) 2003-02-28 2004-09-23 Microsoft Corporation Access point to access point range extension
WO2004107693A1 (en) * 2003-05-28 2004-12-09 Telefonaktiebolaget Lm Ericsson (Publ) Method and system for wireless communication networks using relaying
JP2005020163A (en) * 2003-06-24 2005-01-20 Sony Corp Wireless communication system, wireless communication apparatus and wireless communication method, and computer program
US20040264394A1 (en) * 2003-06-30 2004-12-30 Boris Ginzburg Method and apparatus for multi-channel wireless LAN architecture
WO2005011182A2 (en) * 2003-07-22 2005-02-03 Pctel, Inc. Method and apparatus for automatic configuration of wireless networks
JP4285138B2 (en) 2003-07-24 2009-06-24 ソニー株式会社 Wireless communication system, wireless communication apparatus and wireless communication method, and computer program
WO2005018161A1 (en) * 2003-08-19 2005-02-24 Keio University Radio communication device, ad hoc system, and communication system
US7558960B2 (en) * 2003-10-16 2009-07-07 Cisco Technology, Inc. Network infrastructure validation of network management frames
US7818018B2 (en) * 2004-01-29 2010-10-19 Qualcomm Incorporated Distributed hierarchical scheduling in an AD hoc network
CN1287557C (en) * 2004-03-10 2006-11-29 中兴通讯股份有限公司 Method of implementing loading equalization between insertion point equipment of radio local network
US7552175B2 (en) * 2004-04-30 2009-06-23 Microsoft Corporation Mechanism for controlling communication paths between conference members
WO2005109927A2 (en) * 2004-04-30 2005-11-17 M-Labs, Ltd. Multi-to-multi point ad-hoc wireless data transfer protocol
US20060013959A1 (en) 2004-07-15 2006-01-19 Morales Hector D Process to apply a polimeric coating on non-ferrous substrates
US7505734B2 (en) * 2004-09-10 2009-03-17 Nivis, Llc System and method for communicating broadcast messages in a mesh network
US7542572B2 (en) * 2004-12-01 2009-06-02 Cisco Technology, Inc. Method for securely and automatically configuring access points
US7443809B2 (en) * 2005-04-27 2008-10-28 Symbol Technologies, Inc. Method, system and apparatus for creating a mesh network of wireless switches to support layer 3 roaming in wireless local area networks (WLANs)
US7814322B2 (en) * 2005-05-03 2010-10-12 Sri International Discovery and authentication scheme for wireless mesh networks
US7738470B2 (en) * 2005-05-23 2010-06-15 Alpha Networks Inc. Fast and automatic self-forming meshing topology to integrate with wired networks
WO2007026230A2 (en) * 2005-09-02 2007-03-08 Nokia Corporation Arbitrary mac address usage in a wlan system
CN101313526B (en) 2005-11-02 2015-04-22 美商内数位科技公司 Method and system for autonomous channel coordination for a wireless distribution system
CN100490408C (en) * 2005-11-24 2009-05-20 鸿富锦精密工业(深圳)有限公司;鸿海精密工业股份有限公司 Access point and its method for establishment of wireless distribution system connection
TWI313554B (en) * 2006-07-07 2009-08-11 Arcadyan Technology Corporatio Data transmission method and apparatus applying wi-fi protected access over wireless distribution system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5724346A (en) * 1995-01-11 1998-03-03 Fujitsu Limited Means for maintaining connectable access points owing to movement of a mobile station between cells in a wireless LAN system
US20050174962A1 (en) * 2004-02-05 2005-08-11 David Gurevich Generic client for communication devices
US20060034235A1 (en) * 2004-08-11 2006-02-16 Iwatsu Electric Co., Ltd. Wireless LAN network system and a method for connecting access points thereof
US20060083216A1 (en) * 2004-10-20 2006-04-20 Hyun-Sun Kwack Method and system for transmitting traffic in communication system
US20060215673A1 (en) * 2005-03-11 2006-09-28 Interdigital Technology Corporation Mesh network configured to autonomously commission a network and manage the network topology
US20070030823A1 (en) * 2005-08-08 2007-02-08 Alpha Networks Inc. Wireless routing mechanism for same group and inter-group operations covering both wire network and wireless network
US20070099624A1 (en) * 2005-11-01 2007-05-03 Alpha Networks Inc. Dynamic wireless meshing network for supporting load balance and flow control

Also Published As

Publication number Publication date
KR101235322B1 (en) 2013-02-19
AU2010202860A1 (en) 2010-07-29
KR20080066985A (en) 2008-07-17
TWI519101B (en) 2016-01-21
KR20140035532A (en) 2014-03-21
KR101298385B1 (en) 2013-08-20
CN101313526A (en) 2008-11-26
CN104768191A (en) 2015-07-08
WO2007055994A3 (en) 2007-11-01
US20070104139A1 (en) 2007-05-10
EP1946492A2 (en) 2008-07-23
KR20080070730A (en) 2008-07-30
US20130142068A1 (en) 2013-06-06
MY143644A (en) 2011-06-15
TW201029389A (en) 2010-08-01
IL191236A (en) 2013-10-31
JP2011176871A (en) 2011-09-08
AU2006312041A1 (en) 2007-05-18
RU2392743C2 (en) 2010-06-20
CA2628375C (en) 2016-11-15
KR20130069850A (en) 2013-06-26
RU2010116044A (en) 2011-10-27
AR056166A1 (en) 2007-09-19
KR20120031099A (en) 2012-03-29
KR101539069B1 (en) 2015-07-24
KR101001951B1 (en) 2010-12-17
TWI446749B (en) 2014-07-21
TW200721740A (en) 2007-06-01
KR20120094147A (en) 2012-08-23
KR20130138310A (en) 2013-12-18
CA2628375A1 (en) 2007-05-18
US9198082B2 (en) 2015-11-24
RU2008121975A (en) 2009-12-10
TWI436619B (en) 2014-05-01
AU2006312041B2 (en) 2010-04-08
US8194599B2 (en) 2012-06-05
BRPI0619658A2 (en) 2011-10-11
KR101299400B1 (en) 2013-08-22
KR101581142B1 (en) 2015-12-30
TW201404075A (en) 2014-01-16
CN101313526B (en) 2015-04-22
JP2009515431A (en) 2009-04-09
WO2007055994A2 (en) 2007-05-18
US8411636B2 (en) 2013-04-02
JP5161337B2 (en) 2013-03-13
JP4809898B2 (en) 2011-11-09
US20120236749A1 (en) 2012-09-20
HK1121888A1 (en) 2016-02-26

Similar Documents

Publication Publication Date Title
JP5070216B2 (en) Method and system to perform peer-to-peer communication between stations in the basic service set (bss)
US8559375B2 (en) Peer-to-peer wireless communication system
EP1704731B1 (en) Method and apparatus for indicating service set identifiers to probe for
JP4669548B2 (en) Method and system for reselecting an access point
EP2011044B1 (en) Battery-efficient generic advertising service for wireless mobile devices
KR101477518B1 (en) Machine tyep communication system
KR101648566B1 (en) Method and system for obtaining radio access network(ran) information of cellular telecommunications networks
KR101142556B1 (en) Network management using periodic measurements of indicators
US9191837B2 (en) Neighbor scanning in wireless local area networks
EP1829292B1 (en) Apparatus and associated method, for facilitating network scanning by a wlan terminal operable ina multiple-network wlan system
EP2665298B1 (en) Beacon management for network assisted device-to-device (D2D) communication
US20090245133A1 (en) Broadcast/multicast based network discovery
US20080188215A1 (en) Transmission of special neighbor cell lists
US20060029023A1 (en) Dynamic channel selection scheme for IEEE 802.11 WLANs
US7020439B2 (en) Selection of access point in a wireless communication system
AU2004301628B2 (en) Method and system for delivery of assistance data
US8867487B2 (en) Wireless communication methods and components that implement handoff in wireless local area networks
US7499718B2 (en) Enhanced coverage hole detection in wireless networks
KR100891757B1 (en) Method and apparatus for providing neighborhood ap information in a wlan system
JP6437923B2 (en) Method and apparatus for communication in a network of Wlan overlapping basic service set
US8971182B2 (en) Method for data traffic offloading and apparatus using the same
US20080274759A1 (en) System and Method for Controlling Base Stations for Multimedia Broadcast Communications
US20060268756A1 (en) Systems and methods for efficient hand-off in wireless networks
US9560586B2 (en) Communication method in wireless local area network system
JP4642109B2 (en) Transmission in a mesh system power and the received power control method

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE