US20130250898A1 - Method and system for performing peet-to-peer communication between stations within a basic service set - Google Patents

Method and system for performing peet-to-peer communication between stations within a basic service set Download PDF

Info

Publication number
US20130250898A1
US20130250898A1 US13/899,947 US201313899947A US2013250898A1 US 20130250898 A1 US20130250898 A1 US 20130250898A1 US 201313899947 A US201313899947 A US 201313899947A US 2013250898 A1 US2013250898 A1 US 2013250898A1
Authority
US
United States
Prior art keywords
sta
channel
dls
peer
bss
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
US13/899,947
Inventor
Marian Rudolf
Paul Marinier
Vincent Roy
Maged M. Zaki
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
Application filed by InterDigital Technology Corp filed Critical InterDigital Technology Corp
Priority to US13/899,947 priority Critical patent/US20130250898A1/en
Publication of US20130250898A1 publication Critical patent/US20130250898A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • H04W76/023—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/104—Peer-to-peer [P2P] networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/04—Scheduled access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present invention is related to a wireless communication system. More particularly, the present invention is related to a method and system for performing peer-to-peer wireless communication between stations (STAs) within a basic service set (BSS) while maintaining connectivity with an access point (AP) in the BSS.
  • STAs stations
  • BSS basic service set
  • AP access point
  • WLAN wireless local area network
  • IBSS independent BSS
  • FIG. 1 shows a conventional infrastructure mode WLAN 100 including two BSSs 112 a , 112 b which are connected via a distribution system (DS) 114 .
  • the BSSs are served by APs 102 a , 102 b , respectively.
  • all packets generated by a source STA such as STA 104 a , is first sent to the AP 102 a . If the packets are destined outside the BSS 112 a , the AP 102 a forwards the packets through the DS 114 .
  • the AP 102 a After receiving the packets from the source STA 104 a , forwards the packets over the air interface to the destination STA 104 b in the BSS 112 a . Therefore, the same packets are sent twice over the air.
  • Duplicating such peer-to-peer traffic (i.e., sending the packets sent from one STA in the BSS to another STA in the same BSS), is an inefficient usage of the wireless medium since any peer-to-peer STA traffic within the BSS requires twice as much bandwidth compared to traffic to or from a STA outside the BSS.
  • the IEEE 802.11e provides a feature called direct link setup (DLS).
  • DLS direct link setup
  • a STA first initiates a direct link through the AP and exchanges packets with other STA directly.
  • BSS channel the same frequency channel
  • all traffic both traffic between a STA and an AP and traffic between STAs
  • a conventional IEEE 802.11g or 802.11a BSS will not be able to support more than 30-32 spore Mbps at the medium access control (MAC) level (corresponding to a net data rate of 54 Mbps at the physical layer) aggregate throughput.
  • MAC medium access control
  • the overall BSS radio range (where packets can be reliably received), is essentially determined by the AP's radio range.
  • An interference range of the BSS (where packets cannot be reliably received, but will still create interference to other STAs operating on the same channel), is determined by both the STA's range and the AP's range.
  • DLS depending on the position of the participating STAs, the interference range associated by a pair of STAs can be quite different to the interference range of the AP. Interaction and impacts of these different interference ranges is complex and has been shown to have large negative effects on network capacity in IEEE 802.11 systems.
  • peer-to-peer traffic cannot be off-loaded to a different channel than the BSS channel without the involved peer-to-peer STAs losing layer 2 connectivity to the network.
  • Trading off layer 2 connectivity for capacity is not necessarily an attractive alternative, because many of the devices in a WLAN environment need IP connectivity to support various services. For example, a TV receiving a video playback from a DVD player could not download online DVD info, titles, recommendations, or the like during playback. Losing layer 2 connectivity to the AP implies losing the possibility of supporting all services except the on-going peer-to-peer services.
  • the present invention is related to a method and system for performing peer-to-peer wireless communication between STAs in the same BSS while maintaining layer 2 connectivity and manageability with an AP in the BSS.
  • a source STA, an AP and a destination STA negotiate a DLS channel for performing peer-to-peer communication between the source STA and the destination STA.
  • the DLS channel may be different from a BSS channel used for communication between the AP and each of the STAs.
  • the source STA and the destination STA then perform peer-to-peer communication on the negotiated DLS channel.
  • the peer-to-peer traffic is offloaded to a different channel, (i.e., DLS channel), than the BSS channel while still ensuring layer 2 connectivity from the AP to the STAs.
  • FIG. 1 shows a conventional infrastructure mode WLAN.
  • FIG. 2 shows a signaling diagram of a DLS setup procedure in a wireless communication system including an AP, a first STA and a second STA in accordance with the present invention.
  • the terminology “STA” includes but is not limited to a user equipment (UE), a wireless transmit/receive unit (WTRU), a fixed or mobile subscriber unit, a pager, or any other type of device capable of operating in a wireless environment.
  • 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.
  • IC integrated circuit
  • the terminology “BSS channel” refers to the channel used by the AP in the BSS to communicate with its associated STAs and the terminology “DLS channel” refers to the channel that are used by the STAs for their peer-to-peer communication.
  • the BSS channel is same as the DLS channel.
  • the BSS channel may be different from the DLS channel and there may be multiple DLS channels in the BSS. Alternatively, more than one particular pair of STAs may use one DLS channel.
  • a pair of STAs and an AP negotiate a DLS channel for peer-to-peer communication between the STAs. Once the DLS channel is negotiated, the STAs perform peer-to-peer communication on the negotiated DLS channel. The STAs communicate with each other directly via the negotiated DLS channel while maintaining their BSS association with the AP at all times. Layer 2 connectivity between the AP and each of the STAs is ensured so that the AP retains full control over the STAs.
  • FIG. 2 shows a signaling diagram of a DLS setup process 210 in a wireless communication system 200 including an AP 202 , a first STA 204 a and a second STA 204 b in accordance with the present invention.
  • the first STA 204 a identifies a list of suitable DLS channels among all of the available channels in a BSS (step 212 ).
  • the list of suitable DLS channels may be identified in many different ways as described hereinafter.
  • the list of suitable DLS channels may be stored in a database of the first STA 204 a semi-statically.
  • the database may be management information base (MIB).
  • MIB management information base
  • the list of suitable DLS channels may be set by the user manually using a user interface, such as hypertext markup language (HTML), extended markup language (XML) or equivalent user interfaces.
  • the list of suitable DLS channels may be set by a network management entity remotely by using a communication protocol, such as simple network management protocol (SNMP), XML, a layer 3 (or higher) protocol, or a layer 2 protocol, (e.g., by using a layer 2 management frame).
  • SNMP simple network management protocol
  • XML XML
  • a layer 3 (or higher) protocol or a layer 2 protocol, (e.g., by using a layer 2 management frame).
  • the STA 204 a , 204 b may be configured to check, on a regular or triggered basis, for updates of the suitable DLS channels and related parameters contained in the STA's database.
  • the STA 204 a , 204 b may be configured to check, on a regular or triggered basis, for updates of the list of suitable DLS channels and related parameters in a remote database.
  • the first STA 204 a may generate the list by observing and evaluating the channels in the BSS.
  • the first STA 204 a observes and evaluates the channels available in the BSS based on predetermined criteria including, but not limited to, channel occupancy, interference levels or activity by other STAs on each of the channels.
  • the first STA 204 a then generates the list based on the evaluation of the channels.
  • the first STA 204 a may use dual-radios to observe and evaluate the channels.
  • the first STA 204 a may use non-transmission time periods on the BSS channel to evaluate other channels or use clear-to-send (CTS)-to-self and equivalent mechanisms to obtain measurement periods without interrupting its ongoing transmissions on the BSS channel.
  • CTS clear-to-send
  • the first STA 204 a may determine the list of suitable DLS channels by randomly selecting channel(s) among the possible channels in the BSS.
  • the first STA 204 a may obtain the list of suitable DLS channels from the AP 202 .
  • the AP 202 manages at least one DLS channel and administers policies in the BSS.
  • the AP 202 generates a list of suitable DLS channels by using any methods described hereinbefore and sends the list containing one or more suitable DLS channels to be used in the BSS to the STAs 204 a , 204 b .
  • the list may include preference values for each or a set of entries in the list.
  • the list of suitable DLS channels in the BSS may be signaled as part of a beacon frame, a probe response frame, an association response frame or any other frame.
  • the frame may be a management frame, an action frame, a control frame, a data frame, or any other type of frame.
  • the list may be sent to STAs 204 a , 204 b either by broadcasting/multicasting or by unicasting.
  • the first STA 204 a obtains the list from the AP 202 during an association procedure or by soliciting the AP 202 to send the list.
  • the AP 202 may send configuration information regarding multi-channel DLS policy in the BSS.
  • the configuration information includes, but is not limited to, multi-channel DLS capability implemented in the BSS, multi-channel DLS capability enabled in the BSS and dwell times, maximum transmission times, channel access times, quality of service (QoS) settings, channel access schedules for one or more DLS channels.
  • QoS quality of service
  • the first STA 204 a then sends a DLS request message to an AP 202 to initiate a DLP setup by negotiating for the DLS channel with the AP 202 and the second STA 204 b (step 214 ).
  • the DLS request message includes the list of suitable DLS channels proposed by the first STA 204 a for a peer-to-peer communication with the second STA 204 b .
  • the list of suitable DLS channels may include a preference among the DLS channels included in the list. The preference may be indicated implicitly by the order of the channels in the list.
  • the DLS request message may also include a switch time indicating a start time for the peer-to-peer communication on a negotiated DLS channel.
  • the DLS request message may be used in extension with the conventional IEEE 802.11e DLS request message. In such case, the list of parameters is to be understood as an extension compared to the conventional IEEE 802.11e DLS messages.
  • the AP 202 Upon reception of the DLS request message from the first STA 204 a , the AP 202 chooses the best DLS channel and synchronization schedule (step 216 ). The AP 202 may select the best DLS channel among the channels proposed by the first STA 204 a , or may reject all the channels proposed by the first STA 204 a . Alternatively, the AP 202 may maintain its own list of suitable DLS channels and compare its own list to the list proposed by the first STA 204 a to select the best DLS channel. The AP 202 may observe and evaluate the channels available in the BSS based on predetermined criteria including, but not limited to, channel occupancy, interference levels or activity by STAs on each of the channels.
  • the AP 202 may select the DLS channel based on pre-configuration.
  • the AP 202 may use other information, (e.g., capability information), obtained from the first STA 204 a and the second STA 204 b to select the best DLS channel.
  • the process 210 proceeds to step 222 . If the AP 202 rejects the DLS channels proposed by the first STA 204 a , the AP 202 sends a DLS response message to the first STA 204 a (step 218 ).
  • the DLS response message may include a list of DLS channels proposed by the AP 202 .
  • the DLS response message may include an alternative switch time suggested by the AP 202 in the switch time suggested by the first STA 204 a is not acceptable.
  • the DLS response message may include a synchronization schedule indicating a time schedule for the first STA 204 a and the second STA 204 b to switch back from the DLS channel to the BSS channel for the purpose of BSS connectivity once the DLS is setup.
  • the DLS response message may also include the reason for the rejection.
  • the first STA 204 a may accept the DLS parameters proposed by the AP 202 or may terminate the DLS setup procedure. If the first STA 204 a chooses to accept the alternative DLS parameters proposed by the AP 202 , the first STA 204 a replies to the AP 202 using another DLS request which includes the accepted DLS parameters (step 220 ).
  • the AP 202 Upon receipt of the second DLS request message including the accepted DLS parameters, (which have been suggested by the AP 202 ), or when the AP 202 accepts the original DLS request at step 216 , the AP 202 sends a DLS request message to the second STA 204 b (step 222 ).
  • the DLS request message includes at least one of the best DLS channel selected by the AP 202 , a switch time selected by the AP 202 , and a synchronization schedule for the first STA 204 a and the second STA 204 b to switch back from the DLS channel to the BSS channel for the purpose of BSS connectivity once the DLS is setup.
  • the synchronization schedule may be provided by time intervals (or time periods) linked to the beacon intervals, (e.g., switch back every N beacons), a dwell time (or time periods) on the BSS channel, (e.g., remain on the BSS channel for M time units), or transmission schedule for the DLS channel, (e.g., start time, end time and transmission periods describing which time intervals the first STA and the second STA may spend on the DLS channel and which time intervals the first STA and the second STA must return to the BSS channel).
  • time intervals or time periods linked to the beacon intervals, (e.g., switch back every N beacons)
  • a dwell time or time periods) on the BSS channel, (e.g., remain on the BSS channel for M time units)
  • transmission schedule for the DLS channel e.g., start time, end time and transmission periods describing which time intervals the first STA and the second STA may spend on the DLS channel and which time intervals the first STA and the second
  • the second STA 204 b Upon receipt of the DLS request, the second STA 204 b determines if the second STA 204 b is willing to accept the peer-to-peer communication and may support the DLS parameters proposed by the AP 202 (step 224 ). The second STA 204 b then sends a DLS response message indicating either acceptance or rejection to the AP 202 (step 226 ).
  • the second STA 204 b rejects the peer-to-peer communication request or any of the proposed DLS parameters, the second STA 204 b sends a DLS response message indicating rejection to the AP 202 .
  • the second STA 204 b may specify the cause of the rejection.
  • the second STA 204 b may send suggestions for any of DLS setup parameters. If the second STA 204 b accepts the proposed DLS parameters, the second STA 204 b sends a DLS response message indicating acceptance to the AP 202 .
  • the AP 202 Upon reception of the DLS response from the second STA 204 b , the AP 202 checks for acceptance or rejection of the proposed DLS set-up by the second STA 204 b and sends a DLS response message to the first STA 204 a (steps 228 , 230 ). If the second STA 204 b rejected the DLS set-up, the AP 202 sends a DLS response message indicating rejection to the first STA 204 a . Optionally, the AP 202 may forward the reason for rejection or alternative suggestions made by the second STA 204 b . Upon reception of the DLS response message indicating rejection, the procedure 200 terminates. The first STA 204 a may re-initiate the DLS setup procedure 200 by returning to step 212 .
  • the AP 202 sends a DLS response message indicating acceptance to the first STA 204 a .
  • the first STA 204 a and the second STA 204 b then execute the key exchange procedure according to IEEE 802.11i, switch to the negotiated DLS channel at the specified channel switch time, and return to the BSS channel at the time periods (or time intervals) as specified in the synchronization schedule.
  • the first STA 204 a and the second STA 204 b may first establish a DLS link via a conventional BSS channel. Once the first STA 204 a and the second STA 204 b have setup a DLS link on the BSS channel, one of the STAs 204 a , 204 b may request the other STA for switch to a DLS channel. Once the first STA 204 a and the second STA 204 b agree on a DLS channel, one of them notifies the AP 202 , which may agree or not. Once the AP 202 agrees on the switch of the channel, the first STA 204 a and the second STA 204 b perform a peer-to-peer communication via the negotiated DLS channel.
  • the AP 202 may implement different decision policies regarding its preference of the DLS channels to be used. For example, the AP 202 may allocate each new requested DLS link to a different DLS channel, or allocate a subsequently requested DLS link to a DLS channel that is already allocated for another pair of STAs.
  • the DLS channel may be a sub-channel of the BSS channel. For example, with a 40 MHz bandwidth BSS channel, STAs may choose to set-up a DLS channel with a 20 MHz bandwidth similar to the IEEE 802.11n legacy support mode.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method and system for performing peer-to-peer wireless communication between stations (STAs) within a basic service set (BSS) while maintaining connectivity with an access point (AP) in the BSS are disclosed. A source STA, an AP and a destination STA negotiate a direct link setup (DLS) channel for performing peer-to-peer communication between the source STA and the destination STA. The DLS channel may be different from a BSS channel used for communication between the AP and each of the STAs. The source STA and the destination STA then perform peer-to-peer communication on the negotiated DLS channel.

Description

    CROSS REFERENCE TO RELATED APPLICATION
  • This application is a continuation of U.S. patent Ser. No. 13/314,410, filed Dec. 8, 2011, which is a continuation of U.S. patent Ser. No. 11/554,772, filed Oct. 31, 2006 now U.S. Pat. No. 8,077,683 which issued on Dec. 13, 2011, which claims the benefit of U.S. Provisional Application No. 60/733,217 filed Nov. 3, 2005, which are incorporated by reference as if fully set forth.
    • FIELD OF INVENTION
  • The present invention is related to a wireless communication system. More particularly, the present invention is related to a method and system for performing peer-to-peer wireless communication between stations (STAs) within a basic service set (BSS) while maintaining connectivity with an access point (AP) in the BSS.
    • BACKGROUND
  • There are two different types of wireless local area network (WLAN). One is an infrastructure mode WLAN which includes an AP and a STA, and the other is an ad hoc mode WLAN which includes only peer STAs. The ad hoc mode WLAN is also called an independent BSS (IBSS).
  • FIG. 1 shows a conventional infrastructure mode WLAN 100 including two BSSs 112 a, 112 b which are connected via a distribution system (DS) 114. The BSSs are served by APs 102 a, 102 b, respectively. In the infrastructure mode WLAN 100, all packets generated by a source STA, such as STA 104 a, is first sent to the AP 102 a. If the packets are destined outside the BSS 112 a, the AP 102 a forwards the packets through the DS 114. If the packets are destined to another STA, such as STA 102 b, inside the BSS 112 a, the AP 102 a, after receiving the packets from the source STA 104 a, forwards the packets over the air interface to the destination STA 104 b in the BSS 112 a. Therefore, the same packets are sent twice over the air.
  • Duplicating such peer-to-peer traffic, (i.e., sending the packets sent from one STA in the BSS to another STA in the same BSS), is an inefficient usage of the wireless medium since any peer-to-peer STA traffic within the BSS requires twice as much bandwidth compared to traffic to or from a STA outside the BSS.
  • In order to solve this problem, the IEEE 802.11e provides a feature called direct link setup (DLS). With the IEEE 802.11e DLS, a STA first initiates a direct link through the AP and exchanges packets with other STA directly. However, in an IEEE 802.11-based WLAN, STAs within a BSS share the same frequency channel, (i.e., BSS channel), to communicate with each other, and all traffic, (both traffic between a STA and an AP and traffic between STAs), must still be sent over the BSS channel. With this limitation to a single BSS channel, the amount of peer-to-peer traffic in a BSS that can be supported by a single frequency channel is limited by the overall throughput of the BSS. For example, a conventional IEEE 802.11g or 802.11a BSS will not be able to support more than 30-32 spore Mbps at the medium access control (MAC) level (corresponding to a net data rate of 54 Mbps at the physical layer) aggregate throughput.
  • Furthermore, it is difficult to manage peer-to-peer links in a conventional IEEE 802-11e DLS system. For conventional BSS traffic, (i.e., traffic between STAs and AP), the overall BSS radio range, (where packets can be reliably received), is essentially determined by the AP's radio range. An interference range of the BSS, (where packets cannot be reliably received, but will still create interference to other STAs operating on the same channel), is determined by both the STA's range and the AP's range. However, with DLS, depending on the position of the participating STAs, the interference range associated by a pair of STAs can be quite different to the interference range of the AP. Interaction and impacts of these different interference ranges is complex and has been shown to have large negative effects on network capacity in IEEE 802.11 systems.
  • Moreover, with conventional IEEE 802.11 systems, peer-to-peer traffic cannot be off-loaded to a different channel than the BSS channel without the involved peer-to-peer STAs losing layer 2 connectivity to the network. Trading off layer 2 connectivity for capacity is not necessarily an attractive alternative, because many of the devices in a WLAN environment need IP connectivity to support various services. For example, a TV receiving a video playback from a DVD player could not download online DVD info, titles, recommendations, or the like during playback. Losing layer 2 connectivity to the AP implies losing the possibility of supporting all services except the on-going peer-to-peer services.
  • Therefore, it is desirable to provide a method and system for peer-to-peer wireless communication between STAs within the BSS while maintaining layer 2 connectivity and manageability with an AP in the BSS.
    • SUMMARY
  • The present invention is related to a method and system for performing peer-to-peer wireless communication between STAs in the same BSS while maintaining layer 2 connectivity and manageability with an AP in the BSS. A source STA, an AP and a destination STA negotiate a DLS channel for performing peer-to-peer communication between the source STA and the destination STA. The DLS channel may be different from a BSS channel used for communication between the AP and each of the STAs. The source STA and the destination STA then perform peer-to-peer communication on the negotiated DLS channel. The peer-to-peer traffic is offloaded to a different channel, (i.e., DLS channel), than the BSS channel while still ensuring layer 2 connectivity from the AP to the STAs.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows a conventional infrastructure mode WLAN.
  • FIG. 2 shows a signaling diagram of a DLS setup procedure in a wireless communication system including an AP, a first STA and a second STA in accordance with the present invention.
    •  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • When referred to hereafter, the terminology “STA” includes but is not limited to a user equipment (UE), a wireless transmit/receive unit (WTRU), 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.
  • When referred to hereinafter, the terminology “BSS channel” refers to the channel used by the AP in the BSS to communicate with its associated STAs and the terminology “DLS channel” refers to the channel that are used by the STAs for their peer-to-peer communication. In the conventional WLAN system, (including IEEE 802-11e DLS system), the BSS channel is same as the DLS channel. In accordance with the present invention, the BSS channel may be different from the DLS channel and there may be multiple DLS channels in the BSS. Alternatively, more than one particular pair of STAs may use one DLS channel.
  • In accordance with the present invention, a pair of STAs and an AP negotiate a DLS channel for peer-to-peer communication between the STAs. Once the DLS channel is negotiated, the STAs perform peer-to-peer communication on the negotiated DLS channel. The STAs communicate with each other directly via the negotiated DLS channel while maintaining their BSS association with the AP at all times. Layer 2 connectivity between the AP and each of the STAs is ensured so that the AP retains full control over the STAs.
  • FIG. 2 shows a signaling diagram of a DLS setup process 210 in a wireless communication system 200 including an AP 202, a first STA 204 a and a second STA 204 b in accordance with the present invention. The first STA 204 a identifies a list of suitable DLS channels among all of the available channels in a BSS (step 212). The list of suitable DLS channels may be identified in many different ways as described hereinafter.
  • The list of suitable DLS channels may be stored in a database of the first STA 204 a semi-statically. The database may be management information base (MIB). Alternatively, the list of suitable DLS channels may be set by the user manually using a user interface, such as hypertext markup language (HTML), extended markup language (XML) or equivalent user interfaces. Alternatively, the list of suitable DLS channels may be set by a network management entity remotely by using a communication protocol, such as simple network management protocol (SNMP), XML, a layer 3 (or higher) protocol, or a layer 2 protocol, (e.g., by using a layer 2 management frame).
  • The STA 204 a, 204 b may be configured to check, on a regular or triggered basis, for updates of the suitable DLS channels and related parameters contained in the STA's database. Alternatively, the STA 204 a, 204 b may be configured to check, on a regular or triggered basis, for updates of the list of suitable DLS channels and related parameters in a remote database.
  • Alternatively, the first STA 204 a may generate the list by observing and evaluating the channels in the BSS. The first STA 204 a observes and evaluates the channels available in the BSS based on predetermined criteria including, but not limited to, channel occupancy, interference levels or activity by other STAs on each of the channels. The first STA 204 a then generates the list based on the evaluation of the channels. The first STA 204 a may use dual-radios to observe and evaluate the channels. Alternatively, the first STA 204 a may use non-transmission time periods on the BSS channel to evaluate other channels or use clear-to-send (CTS)-to-self and equivalent mechanisms to obtain measurement periods without interrupting its ongoing transmissions on the BSS channel.
  • Alternatively, the first STA 204 a may determine the list of suitable DLS channels by randomly selecting channel(s) among the possible channels in the BSS.
  • Alternatively, the first STA 204 a may obtain the list of suitable DLS channels from the AP 202. The AP 202 manages at least one DLS channel and administers policies in the BSS. The AP 202 generates a list of suitable DLS channels by using any methods described hereinbefore and sends the list containing one or more suitable DLS channels to be used in the BSS to the STAs 204 a, 204 b. Optionally, the list may include preference values for each or a set of entries in the list. The list of suitable DLS channels in the BSS may be signaled as part of a beacon frame, a probe response frame, an association response frame or any other frame. The frame may be a management frame, an action frame, a control frame, a data frame, or any other type of frame. The list may be sent to STAs 204 a, 204 b either by broadcasting/multicasting or by unicasting. Preferably, the first STA 204 a obtains the list from the AP 202 during an association procedure or by soliciting the AP 202 to send the list.
  • In addition to the list of DLS channels, the AP 202 may send configuration information regarding multi-channel DLS policy in the BSS. The configuration information includes, but is not limited to, multi-channel DLS capability implemented in the BSS, multi-channel DLS capability enabled in the BSS and dwell times, maximum transmission times, channel access times, quality of service (QoS) settings, channel access schedules for one or more DLS channels.
  • The first STA 204 a then sends a DLS request message to an AP 202 to initiate a DLP setup by negotiating for the DLS channel with the AP 202 and the second STA 204 b (step 214). The DLS request message includes the list of suitable DLS channels proposed by the first STA 204 a for a peer-to-peer communication with the second STA 204 b. The list of suitable DLS channels may include a preference among the DLS channels included in the list. The preference may be indicated implicitly by the order of the channels in the list. The DLS request message may also include a switch time indicating a start time for the peer-to-peer communication on a negotiated DLS channel. The DLS request message may be used in extension with the conventional IEEE 802.11e DLS request message. In such case, the list of parameters is to be understood as an extension compared to the conventional IEEE 802.11e DLS messages.
  • Upon reception of the DLS request message from the first STA 204 a, the AP 202 chooses the best DLS channel and synchronization schedule (step 216). The AP 202 may select the best DLS channel among the channels proposed by the first STA 204 a, or may reject all the channels proposed by the first STA 204 a. Alternatively, the AP 202 may maintain its own list of suitable DLS channels and compare its own list to the list proposed by the first STA 204 a to select the best DLS channel. The AP 202 may observe and evaluate the channels available in the BSS based on predetermined criteria including, but not limited to, channel occupancy, interference levels or activity by STAs on each of the channels. Alternatively, the AP 202 may select the DLS channel based on pre-configuration. The AP 202 may use other information, (e.g., capability information), obtained from the first STA 204 a and the second STA 204 b to select the best DLS channel.
  • If the AP 202 selects the best DLS channel from the list proposed by the first STA 204 a, the process 210 proceeds to step 222. If the AP 202 rejects the DLS channels proposed by the first STA 204 a, the AP 202 sends a DLS response message to the first STA 204 a (step 218). The DLS response message may include a list of DLS channels proposed by the AP 202. The DLS response message may include an alternative switch time suggested by the AP 202 in the switch time suggested by the first STA 204 a is not acceptable. The DLS response message may include a synchronization schedule indicating a time schedule for the first STA 204 a and the second STA 204 b to switch back from the DLS channel to the BSS channel for the purpose of BSS connectivity once the DLS is setup. The DLS response message may also include the reason for the rejection.
  • Upon receipt of the DLS response message indicating an alternative suggestions by the AP 202 for any of the DLS parameters, (i.e., DLS channels, switch time), the first STA 204 a may accept the DLS parameters proposed by the AP 202 or may terminate the DLS setup procedure. If the first STA 204 a chooses to accept the alternative DLS parameters proposed by the AP 202, the first STA 204 a replies to the AP 202 using another DLS request which includes the accepted DLS parameters (step 220).
  • Upon receipt of the second DLS request message including the accepted DLS parameters, (which have been suggested by the AP 202), or when the AP 202 accepts the original DLS request at step 216, the AP 202 sends a DLS request message to the second STA 204 b (step 222). The DLS request message includes at least one of the best DLS channel selected by the AP 202, a switch time selected by the AP 202, and a synchronization schedule for the first STA 204 a and the second STA 204 b to switch back from the DLS channel to the BSS channel for the purpose of BSS connectivity once the DLS is setup.
  • The synchronization schedule may be provided by time intervals (or time periods) linked to the beacon intervals, (e.g., switch back every N beacons), a dwell time (or time periods) on the BSS channel, (e.g., remain on the BSS channel for M time units), or transmission schedule for the DLS channel, (e.g., start time, end time and transmission periods describing which time intervals the first STA and the second STA may spend on the DLS channel and which time intervals the first STA and the second STA must return to the BSS channel).
  • Upon receipt of the DLS request, the second STA 204 b determines if the second STA 204 b is willing to accept the peer-to-peer communication and may support the DLS parameters proposed by the AP 202 (step 224). The second STA 204 b then sends a DLS response message indicating either acceptance or rejection to the AP 202 (step 226).
  • If the second STA 204 b rejects the peer-to-peer communication request or any of the proposed DLS parameters, the second STA 204 b sends a DLS response message indicating rejection to the AP 202. Optionally, the second STA 204 b may specify the cause of the rejection. Alternatively, the second STA 204 b may send suggestions for any of DLS setup parameters. If the second STA 204 b accepts the proposed DLS parameters, the second STA 204 b sends a DLS response message indicating acceptance to the AP 202.
  • Upon reception of the DLS response from the second STA 204 b, the AP 202 checks for acceptance or rejection of the proposed DLS set-up by the second STA 204 b and sends a DLS response message to the first STA 204 a (steps 228, 230). If the second STA 204 b rejected the DLS set-up, the AP 202 sends a DLS response message indicating rejection to the first STA 204 a. Optionally, the AP 202 may forward the reason for rejection or alternative suggestions made by the second STA 204 b. Upon reception of the DLS response message indicating rejection, the procedure 200 terminates. The first STA 204 a may re-initiate the DLS setup procedure 200 by returning to step 212.
  • If the second STA 204 b accepted the DLS set-up, the AP 202 sends a DLS response message indicating acceptance to the first STA 204 a. The first STA 204 a and the second STA 204 b then execute the key exchange procedure according to IEEE 802.11i, switch to the negotiated DLS channel at the specified channel switch time, and return to the BSS channel at the time periods (or time intervals) as specified in the synchronization schedule.
  • In accordance with another embodiment of the present invention, instead of initiating a procedure for setting up a DLS link via the DLS channel, the first STA 204 a and the second STA 204 b may first establish a DLS link via a conventional BSS channel. Once the first STA 204 a and the second STA 204 b have setup a DLS link on the BSS channel, one of the STAs 204 a, 204 b may request the other STA for switch to a DLS channel. Once the first STA 204 a and the second STA 204 b agree on a DLS channel, one of them notifies the AP 202, which may agree or not. Once the AP 202 agrees on the switch of the channel, the first STA 204 a and the second STA 204 b perform a peer-to-peer communication via the negotiated DLS channel.
  • In selecting the best DLS channel, the AP 202 may implement different decision policies regarding its preference of the DLS channels to be used. For example, the AP 202 may allocate each new requested DLS link to a different DLS channel, or allocate a subsequently requested DLS link to a DLS channel that is already allocated for another pair of STAs.
  • The DLS channel may be a sub-channel of the BSS channel. For example, with a 40 MHz bandwidth BSS channel, STAs may choose to set-up a DLS channel with a 20 MHz bandwidth similar to the IEEE 802.11n legacy support mode.
  • 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 (14)

What is claimed is:
1. A method for performing peer-to-peer wireless communication between a first station (STA) and a second STA, the method comprising:
a first STA setting up a direct link on a first channel to communicate with a second channel, wherein messages for setting up the direct link are delivered through an access point (AP);
the first STA negotiating with the second STA to switch a channel for the direct link to a second channel, wherein messages for switching the channel are exchanged directly between the first STA and the second STA without going through the AP; and
the first STA periodically switching between the first channel and the second channel to maintain connectivity with the AP.
2. The method of claim 1 wherein the first STA or the second STA indicates a switch time for switching the direct link to the second channel.
3. The method of claim 1 wherein the first STA or the second STA provides a list of at least one target channel to switch the channel for the direct link.
4. The method of claim 3 wherein the list is generated by observing and evaluating channels available in a basic service set (BSS).
5. The method of claim 1 wherein the first STA switches back and forth between the first channel and the second channel in accordance with a schedule agreed with the second STA.
6. The method of claim 1 wherein the second channel is a sub-channel of the first channel.
7. The method of claim 1 further comprising the first STA executing a key exchange procedure with the second STA for security.
8. A station (STA) for performing peer-to-peer wireless communication with a peer STA in a basic service set (BSS), the STA comprising:
a transceiver for transmitting and receiving messages;
a controller configured to set up a direct link on a first channel to communicate with a second STA, wherein messages for setting up the direct link are delivered through an access point (AP);
the controller configured to negotiate with the second STA to switch a channel for the direct link to a second channel, wherein messages for switching the channel are exchanged directly between the first STA and the second STA without going through the AP; and
the controller configured to periodically switch between the first channel and the second channel to maintain connectivity with the AP.
9. The STA of claim 8 wherein the controller is configured to indicate a switch time for switching the direct link to the second channel.
10. The STA of claim 8 wherein the controller is configured to provide a list of at least one target channel to switch the channel for the direct link.
11. The STA of claim 10 wherein the controller is configured to generate the list by observing and evaluating channels available in a basic service set (BSS).
12. The STA of claim 8 wherein the controller is configured to switch back and forth between the first channel and the second channel in accordance with a schedule agreed with the second STA.
13. The STA of claim 8 wherein the second channel is a sub-channel of the first channel.
14. The STA of claim 8 wherein the controller is configured to execute a key exchange procedure with the peer STA for security.
US13/899,947 2005-11-03 2013-05-22 Method and system for performing peet-to-peer communication between stations within a basic service set Abandoned US20130250898A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/899,947 US20130250898A1 (en) 2005-11-03 2013-05-22 Method and system for performing peet-to-peer communication between stations within a basic service set

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US73321705P 2005-11-03 2005-11-03
US11/554,772 US8077683B2 (en) 2005-11-03 2006-10-31 Method and system for performing peer-to-peer communication between stations within a basic service set
US13/314,410 US8452289B2 (en) 2005-11-03 2011-12-08 Method and system for performing peer-to-peer communication between stations within a basic service set
US13/899,947 US20130250898A1 (en) 2005-11-03 2013-05-22 Method and system for performing peet-to-peer communication between stations within a basic service set

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US13/314,410 Continuation US8452289B2 (en) 2005-11-03 2011-12-08 Method and system for performing peer-to-peer communication between stations within a basic service set

Publications (1)

Publication Number Publication Date
US20130250898A1 true US20130250898A1 (en) 2013-09-26

Family

ID=37865741

Family Applications (3)

Application Number Title Priority Date Filing Date
US11/554,772 Expired - Fee Related US8077683B2 (en) 2005-11-03 2006-10-31 Method and system for performing peer-to-peer communication between stations within a basic service set
US13/314,410 Expired - Fee Related US8452289B2 (en) 2005-11-03 2011-12-08 Method and system for performing peer-to-peer communication between stations within a basic service set
US13/899,947 Abandoned US20130250898A1 (en) 2005-11-03 2013-05-22 Method and system for performing peet-to-peer communication between stations within a basic service set

Family Applications Before (2)

Application Number Title Priority Date Filing Date
US11/554,772 Expired - Fee Related US8077683B2 (en) 2005-11-03 2006-10-31 Method and system for performing peer-to-peer communication between stations within a basic service set
US13/314,410 Expired - Fee Related US8452289B2 (en) 2005-11-03 2011-12-08 Method and system for performing peer-to-peer communication between stations within a basic service set

Country Status (12)

Country Link
US (3) US8077683B2 (en)
EP (2) EP2683119A2 (en)
JP (2) JP5070216B2 (en)
KR (2) KR101068589B1 (en)
CN (3) CN102883447A (en)
AR (1) AR056767A1 (en)
AU (2) AU2006312040B2 (en)
BR (1) BRPI0619692A2 (en)
CA (1) CA2628365A1 (en)
RU (2) RU2395934C2 (en)
TW (3) TW200719743A (en)
WO (1) WO2007055993A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8964667B2 (en) * 2008-11-24 2015-02-24 Qualcomm Incorporated Air interface selection between nodes in peer-to-peer/ad-hoc networks
JP2015082831A (en) * 2013-10-24 2015-04-27 富士通株式会社 Radio communication device, radio communication method, and radio communication system
CN107231702A (en) * 2016-03-24 2017-10-03 中兴通讯股份有限公司 The method for building up of direct connected link and its method and node for realizing data transfer
CN107947879A (en) * 2017-11-23 2018-04-20 中国船舶重工集团公司第七〇九研究所 Ship communication channel switching device, system and its application method
US11324061B2 (en) * 2017-08-10 2022-05-03 Canon Kabushiki Kaisha Communication apparatus, computer readable storage medium, and control method of communication apparatus

Families Citing this family (125)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7684409B2 (en) * 2004-06-10 2010-03-23 The Directv Group, Inc. Efficient message delivery in a multi-channel uni-directional communications system
US8077683B2 (en) * 2005-11-03 2011-12-13 Interdigital Technology Corporation Method and system for performing peer-to-peer communication between stations within a basic service set
US8811369B2 (en) 2006-01-11 2014-08-19 Qualcomm Incorporated Methods and apparatus for supporting multiple communications modes of operation
JP4976419B2 (en) 2006-01-11 2012-07-18 クゥアルコム・インコーポレイテッド Wireless device discovery in wireless peer-to-peer networks
JP4671422B2 (en) * 2006-01-31 2011-04-20 キヤノン株式会社 COMMUNICATION SYSTEM, COMMUNICATION DEVICE, AND DISPLAY METHOD THEREOF
US8059646B2 (en) 2006-07-11 2011-11-15 Napo Enterprises, Llc System and method for identifying music content in a P2P real time recommendation network
US7970922B2 (en) * 2006-07-11 2011-06-28 Napo Enterprises, Llc P2P real time media recommendations
US9003056B2 (en) 2006-07-11 2015-04-07 Napo Enterprises, Llc Maintaining a minimum level of real time media recommendations in the absence of online friends
US8327266B2 (en) 2006-07-11 2012-12-04 Napo Enterprises, Llc Graphical user interface system for allowing management of a media item playlist based on a preference scoring system
US8620699B2 (en) 2006-08-08 2013-12-31 Napo Enterprises, Llc Heavy influencer media recommendations
JP5127269B2 (en) * 2007-03-07 2013-01-23 キヤノン株式会社 Wireless communication apparatus, wireless communication method, and computer program for causing computer to execute wireless communication method
US7720086B2 (en) * 2007-03-19 2010-05-18 Microsoft Corporation Distributed overlay multi-channel media access control for wireless ad hoc networks
KR100879541B1 (en) * 2007-04-09 2009-01-22 삼성전자주식회사 Apparatus of wireless communication in a dual mode portable terminal and Method thereof
KR101479263B1 (en) * 2007-07-09 2015-01-06 삼성전자주식회사 Method for apparatus for adaptive peer to peer comunication selection in mobile comunication system
US8705438B2 (en) 2007-07-10 2014-04-22 Qualcomm Incorporated Methods and apparatus for selecting and/or using a communications band for peer to peer signaling
US7899073B2 (en) * 2007-07-10 2011-03-01 Qualcomm Incorporated Methods and apparatus for monitoring for signals and selecting and/or using a communications band based on the monitoring results
US8521194B2 (en) 2007-07-10 2013-08-27 Qualcomm Incorporated Performing paging in a wireless peer-to-peer network
WO2009008615A2 (en) * 2007-07-11 2009-01-15 Lg Electronics Inc. Direct link teardown procedure in tunneled direct link setup (tdls) wireless network and station supporting the same
EP2196014A4 (en) 2007-09-17 2014-12-24 Telecomm Systems Inc Emergency 911 data messaging
EP2195971B1 (en) 2007-09-18 2018-11-07 LG Electronics Inc. Direct link setup procedure in tunneled direct link setup wireless network and station supporting the procedure
KR101443376B1 (en) * 2007-10-24 2014-11-04 삼성전자주식회사 Method for transmitting/receiving data supporting scalability in a communication system
JP5160191B2 (en) * 2007-10-30 2013-03-13 京セラ株式会社 Wireless communication terminal and control method thereof
EP2218236B1 (en) * 2007-11-12 2019-01-02 LG Electronics Inc. Procedure for a power save mode in a direct link setup wireless network
US8396951B2 (en) 2007-12-20 2013-03-12 Napo Enterprises, Llc Method and system for populating a content repository for an internet radio service based on a recommendation network
JP4475328B2 (en) * 2007-12-26 2010-06-09 ソニー株式会社 Wireless communication system, wireless communication apparatus, wireless communication method, and program
CN101472299B (en) * 2007-12-28 2012-11-07 华为技术有限公司 Method, system and device for dynamically determining Off-Channel
CN101227362B (en) * 2008-01-18 2012-05-23 西安西电捷通无线网络通信股份有限公司 Method for wireless personal area network access
CN101232419B (en) * 2008-01-18 2010-12-08 西安西电捷通无线网络通信股份有限公司 Wireless local area network access method based on primitive
JP4479813B2 (en) * 2008-03-18 2010-06-09 ソニー株式会社 COMMUNICATION DEVICE AND COMMUNICATION METHOD, COMMUNICATION SYSTEM, AND COMPUTER PROGRAM
KR101220774B1 (en) 2008-05-01 2013-01-09 엘지전자 주식회사 Direct link setup procedure in tunneled direct link setup wireless network and station supporting the procedure
US8595501B2 (en) 2008-05-09 2013-11-26 Qualcomm Incorporated Network helper for authentication between a token and verifiers
KR20090117560A (en) * 2008-05-09 2009-11-12 엘지전자 주식회사 Direct link setup procedure and channel allocation mechanism in multi-channel wireless telecommunication network
CN102090132A (en) * 2008-05-15 2011-06-08 诺基亚公司 Methods, apparatuses and computer program products for providing coordination of device to device communication
US9072060B2 (en) 2008-06-03 2015-06-30 Nokia Technologies Oy Method, apparatus and computer program for power control to mitigate interference
US8577363B2 (en) * 2008-07-14 2013-11-05 Nokia Corporation Setup of device-to-device connection
US20100011110A1 (en) * 2008-07-14 2010-01-14 Nokia Corporation Mobile terminal to media server connection apparatus, system, and method
US8255714B2 (en) * 2008-07-17 2012-08-28 Samsung Electronics Co., Ltd. System and method for establishing a direct link on the high throughput channel of a multi-rate channel wireless communications network
US8279851B2 (en) * 2008-08-15 2012-10-02 Nokia Corporation Apparatus, system, and method for obtaining local connectivity settings
KR101511386B1 (en) * 2008-10-15 2015-04-13 엘지전자 주식회사 Direct link setup procedure in Tunneled Direct Link Setup(TDLS) wireless network
US9320067B2 (en) 2008-11-24 2016-04-19 Qualcomm Incorporated Configuration of user equipment for peer-to-peer communication
US9986279B2 (en) 2008-11-26 2018-05-29 Free Stream Media Corp. Discovery, access control, and communication with networked services
US10977693B2 (en) 2008-11-26 2021-04-13 Free Stream Media Corp. Association of content identifier of audio-visual data with additional data through capture infrastructure
US10631068B2 (en) 2008-11-26 2020-04-21 Free Stream Media Corp. Content exposure attribution based on renderings of related content across multiple devices
US10880340B2 (en) 2008-11-26 2020-12-29 Free Stream Media Corp. Relevancy improvement through targeting of information based on data gathered from a networked device associated with a security sandbox of a client device
US9386356B2 (en) 2008-11-26 2016-07-05 Free Stream Media Corp. Targeting with television audience data across multiple screens
US9519772B2 (en) 2008-11-26 2016-12-13 Free Stream Media Corp. Relevancy improvement through targeting of information based on data gathered from a networked device associated with a security sandbox of a client device
US9026668B2 (en) 2012-05-26 2015-05-05 Free Stream Media Corp. Real-time and retargeted advertising on multiple screens of a user watching television
US9154942B2 (en) 2008-11-26 2015-10-06 Free Stream Media Corp. Zero configuration communication between a browser and a networked media device
US10567823B2 (en) 2008-11-26 2020-02-18 Free Stream Media Corp. Relevant advertisement generation based on a user operating a client device communicatively coupled with a networked media device
US8180891B1 (en) 2008-11-26 2012-05-15 Free Stream Media Corp. Discovery, access control, and communication with networked services from within a security sandbox
US9961388B2 (en) 2008-11-26 2018-05-01 David Harrison Exposure of public internet protocol addresses in an advertising exchange server to improve relevancy of advertisements
US10419541B2 (en) 2008-11-26 2019-09-17 Free Stream Media Corp. Remotely control devices over a network without authentication or registration
US10334324B2 (en) 2008-11-26 2019-06-25 Free Stream Media Corp. Relevant advertisement generation based on a user operating a client device communicatively coupled with a networked media device
KR101493528B1 (en) * 2008-12-12 2015-02-16 엘지전자 주식회사 Method for band switch for Very High Throughput(VHT) WLAN system and frame format for the method
US8200602B2 (en) 2009-02-02 2012-06-12 Napo Enterprises, Llc System and method for creating thematic listening experiences in a networked peer media recommendation environment
EP2434832A2 (en) * 2009-04-15 2012-03-28 Itec Tokyo Corporation Communication method in an ieee 802.11 wireless lan environment
US8233495B2 (en) * 2009-04-22 2012-07-31 Intel Corporation Discovery channel and discovery beacon for peer-to-peer devices in wireless communications network
US8032652B2 (en) * 2009-04-30 2011-10-04 Aruba Networks, Inc. Initiating peer-to-peer tunnels
US9049045B2 (en) * 2009-04-24 2015-06-02 Aruba Networks, Inc. Peer-to-peer forwarding for packet-switched traffic
JP5313758B2 (en) 2009-04-27 2013-10-09 パナソニック株式会社 Wireless communication route selection method
EP2425670B1 (en) 2009-04-30 2016-07-20 Nokia Technologies Oy Methods, apparatuses and computer program product for managing device-to-device interference
US8885538B2 (en) 2009-05-08 2014-11-11 Lg Electronics Inc. Method and apparatus for ascynchronous direct link setup in WLAN system
US9007968B2 (en) * 2009-06-16 2015-04-14 Samsung Electronics Co., Ltd. System and method for wireless multi-band networks association and maintenance
US20120134344A1 (en) * 2009-08-07 2012-05-31 Ling Yu Scheduling In Radio Telecommunication System
US8706124B2 (en) * 2009-09-17 2014-04-22 Nokia Corporation Data path transfer for multiband communication
JP5613770B2 (en) * 2009-09-18 2014-10-29 インターデイジタル パテント ホールディングス インコーポレイテッド Method and apparatus for providing a network connection for peer-to-peer direct link communication
US8400955B2 (en) * 2009-09-21 2013-03-19 Samsung Electronics Co., Ltd. System and method for power saving by coordinated wake-up in a wireless multi-band network
US8755302B2 (en) * 2009-09-24 2014-06-17 Samsung Electronics Co., Ltd. Method and system for ad-hoc communications over millimeter wave wireless channels in wireless systems
WO2011040763A2 (en) 2009-09-29 2011-04-07 한국전자통신연구원 Method and apparatus for setting up a relay link in a wireless communication system
US20110082939A1 (en) * 2009-10-02 2011-04-07 Michael Peter Montemurro Methods and apparatus to proxy discovery and negotiations between network entities to establish peer-to-peer communications
US9949305B2 (en) 2009-10-02 2018-04-17 Blackberry Limited Methods and apparatus for peer-to-peer communications in a wireless local area network
CN102640553B (en) * 2009-10-30 2015-06-24 诺基亚公司 Scheduling of direct to direct communication
US9900759B2 (en) * 2009-11-04 2018-02-20 Qualcomm Incorporated Method and apparatus for peer discovery in a wireless communication network
KR101640507B1 (en) * 2009-11-06 2016-07-19 삼성전자주식회사 Method and apparatus for changing frequency band being used for communication between devices supporting communication of multi frequency bands
WO2011060267A1 (en) * 2009-11-13 2011-05-19 Interdigital Patent Holdings, Inc. Control signaling in wireless communications
US9432818B2 (en) 2010-02-11 2016-08-30 Nokia Solutions And Networks Oy Controlling communication devices
US8428629B2 (en) * 2010-03-31 2013-04-23 Qualcomm Incorporated Methods and apparatus for determining a communications mode and/or using a determined communications mode
US8885621B2 (en) 2010-04-26 2014-11-11 Intel Corporation Method, apparatus and system for switching traffic streams among multiple bands
US9614641B2 (en) * 2010-05-12 2017-04-04 Qualcomm Incorporated Resource coordination for peer-to-peer groups through distributed negotiation
CN103120003B (en) * 2010-09-23 2016-09-28 黑莓有限公司 The system and method that dynamic coordinate Radio Resource uses in wireless network environment
US8650604B2 (en) * 2010-10-27 2014-02-11 Samsung Electronics Co., Ltd. Method and system for synchronization of audio/video (A/V) stream format change in wireless communication systems
US9271136B2 (en) * 2010-11-19 2016-02-23 Qualcomm Incorporated Probe messaging for direct link connections
US10091636B2 (en) 2010-11-19 2018-10-02 Qualcomm Incorporated Probe messaging for direct link connections
US20120147823A1 (en) * 2010-12-10 2012-06-14 Qualcomm Incorporated Methods and apparatus for scheduling of peer-to-peer communication in a wireless wide area network spectrum
WO2012150815A2 (en) * 2011-05-02 2012-11-08 엘지전자 주식회사 Method for performing device-to-device communication in wireless access system and apparatus therefor
US8817722B2 (en) 2011-06-07 2014-08-26 Qualcomm Incorporated Preemptive direct link channel switching
US20130039215A1 (en) * 2011-07-12 2013-02-14 Futurewei Technologies, Inc. System and Method for Direct Multi-User Transmission
US9210731B2 (en) * 2011-07-25 2015-12-08 Qualcomm Incorporated Direct link setup through an extended service set
US9635694B2 (en) 2011-07-25 2017-04-25 Qualcomm Incorporated Method and apparatus for tunneled direct link setup management
KR101832773B1 (en) * 2011-08-29 2018-02-27 엘지전자 주식회사 Distribution system connection through a station working as a non-access point
US8909667B2 (en) 2011-11-01 2014-12-09 Lemi Technology, Llc Systems, methods, and computer readable media for generating recommendations in a media recommendation system
CN102547685B (en) * 2011-12-28 2015-01-07 Tcl王牌电器(惠州)有限公司 Building method of direct-linked chain, terminal and communication system
CN103209468B (en) * 2012-01-17 2016-05-18 华为终端有限公司 Method, access point and the website of wireless transmission
US20130244579A1 (en) * 2012-03-16 2013-09-19 Rapidblue Solutions Method of enabling proximity based connectivity between mobile devices using different operating systems
US9100984B2 (en) 2012-04-04 2015-08-04 Qualcomm Incorporated Wireless channelization
US9560685B2 (en) * 2012-04-20 2017-01-31 Lg Electronics Inc. Method and device for transmitting D2D data in wireless communication system
US8989070B2 (en) 2012-07-02 2015-03-24 Intel Corporation Apparatus and method to efficiently send device trigger messages
US20140126470A1 (en) * 2012-11-02 2014-05-08 Emily Qi Mechanism to enable rejection and cancellation of request actions from wireless peer-to-peer devices
US9807735B2 (en) * 2012-11-12 2017-10-31 Microsoft Technology Licensing, Llc Connection information for inter-device wireless data communication
US9967727B2 (en) * 2013-02-22 2018-05-08 Intel IP Corporation Systems and methods for access network selection and traffic routing
EP2979511A1 (en) * 2013-03-25 2016-02-03 Nokia Technologies Oy Direct device-to-device communications radio technology selection
KR20140118896A (en) * 2013-03-28 2014-10-08 한국전자통신연구원 Method for direct communication between stations in wireless local area system
US20140301294A1 (en) * 2013-03-28 2014-10-09 Electronics And Telecommunications Research Institute Method for direct communication between stations in wireless local area system
JP2014212412A (en) * 2013-04-18 2014-11-13 ソニー株式会社 Information processing device, radio communication system, and information processing method
US9705656B2 (en) * 2013-05-03 2017-07-11 Qualcomm Incorporated Systems and methods for peer-to-peer and AP traffic multiplexing
JP6118187B2 (en) * 2013-06-12 2017-04-19 キヤノン株式会社 Printing apparatus, printing apparatus control method, and program
JP6046006B2 (en) * 2013-08-08 2016-12-14 日本電信電話株式会社 Wireless communication system and wireless communication method
US9838940B2 (en) * 2013-09-18 2017-12-05 Qualcomm, Incorporated Packet transmission deferral based on BSSID information
JP6392334B2 (en) * 2013-10-03 2018-09-19 エルジー エレクトロニクス インコーポレイティド Method and apparatus for transmitting an indicator for D2D operation in a wireless communication system
CN104703221A (en) * 2013-12-10 2015-06-10 中国移动通信集团北京有限公司 Mobile network, device and method for control of terminal access target frequency bands
CN105338632B (en) * 2014-06-20 2020-09-29 索尼公司 Radio resource management system and radio resource management method
JP6451977B2 (en) * 2014-08-01 2019-01-16 富士通コネクテッドテクノロジーズ株式会社 Wireless communication apparatus, wireless communication method, and wireless communication program
US9521192B2 (en) 2014-10-30 2016-12-13 Intel Corporation Apparatus, system and method of communicating traffic to a plurality of peer to peer devices
US10051676B2 (en) * 2014-10-30 2018-08-14 Intel Corporation Apparatus, system and method of peer to peer communication
CN105722037B (en) * 2014-12-03 2019-04-23 中国移动通信集团公司 A kind of method and apparatus that wlan device is interacted with WFD equipment
US11696216B2 (en) * 2016-02-18 2023-07-04 Comcast Cable Communications, Llc SSID broadcast management to support priority of broadcast
US10367761B2 (en) * 2016-04-25 2019-07-30 Intel IP Corporation Coordinated channel switch timing and transmissions in neighborhood awareness networks
DE112016007007T5 (en) 2016-06-22 2019-03-07 Intel Corporation COMMUNICATION DEVICE AND METHOD FOR FULL DUPLEX DISPOSITION
US10602466B2 (en) * 2017-11-09 2020-03-24 Qualcomm Incorporated Multi-basic service set uplink time alignment
CN110928705B (en) * 2019-10-15 2023-09-22 湖南大学 Communication characteristic analysis method and system for high-performance computing application
JP7012772B2 (en) * 2020-04-06 2022-01-28 キヤノン株式会社 Printing equipment and programs
JP7304982B2 (en) * 2020-04-06 2023-07-07 キヤノン株式会社 Communication device and program
CN111641979B (en) * 2020-04-30 2021-12-03 华为技术有限公司 Method for realizing Wi-Fi point-to-point service and related equipment
US12004238B2 (en) 2021-10-28 2024-06-04 Qualcomm Incorporated Low latency schemes for peer-to-peer (P2P) communications
WO2024102573A1 (en) * 2022-11-08 2024-05-16 Cisco Technology, Inc. Allocating wireless resources for peer-to-peer communications

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030231608A1 (en) * 2002-06-12 2003-12-18 Wentink Maarten Menzo Direct link protocol in wireless local area networks
US20050036469A1 (en) * 2002-06-12 2005-02-17 Globespan Virata Incorporated Event-based multichannel direct link
US20050226183A1 (en) * 2004-04-09 2005-10-13 Sitarama Penumetsa Systems and methods for implementing an enhanced multi-channel direct link protocol between stations in a wireless LAN environment
US20060056336A1 (en) * 2004-09-10 2006-03-16 Dacosta Behram M Method for data synchronization with mobile wireless devices
US20060168343A1 (en) * 2003-03-07 2006-07-27 Koninklijke Philips Electronics N.V. Method and system for radio link establishment and maintenance with p2p communication in wireless communication

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5515366A (en) * 1994-11-17 1996-05-07 International Business Machines Corporation Method and apparatus for direct communication in a TDMA radio communication system
US5819177A (en) 1996-03-20 1998-10-06 Dynamic Telecommunications, Inc. Fixed wireless terminals with network management method and apparatus
US7146636B2 (en) * 2000-07-24 2006-12-05 Bluesocket, Inc. Method and system for enabling centralized control of wireless local area networks
EP1338125A2 (en) * 2000-11-03 2003-08-27 AT & T Corp. Tiered contention multiple access (tcma): a method for priority-based shared channel access
US7155518B2 (en) * 2001-01-08 2006-12-26 Interactive People Unplugged Ab Extranet workgroup formation across multiple mobile virtual private networks
US6842460B1 (en) * 2001-06-27 2005-01-11 Nokia Corporation Ad hoc network discovery menu
EP1274178A1 (en) * 2001-06-28 2003-01-08 Siemens Information and Communication Networks S.p.A. Downlink power control in packet switching cellular systems with dynamic channel allocation
US6771666B2 (en) * 2002-03-15 2004-08-03 Meshnetworks, Inc. System and method for trans-medium address resolution on an ad-hoc network with at least one highly disconnected medium having multiple access points to other media
US7693484B2 (en) * 2002-01-29 2010-04-06 Palm, Inc. Dynamic networking modes method and apparatus
JP3888178B2 (en) * 2002-02-21 2007-02-28 セイコーエプソン株式会社 Communication channel switching control in wireless communication
JP4112241B2 (en) * 2002-02-22 2008-07-02 三菱電機株式会社 Communication system and communication method
US6961541B2 (en) * 2002-05-24 2005-11-01 Aeroscout, Inc. Method and apparatus for enhancing security in a wireless network using distance measurement techniques
US20040004951A1 (en) * 2002-07-05 2004-01-08 Interdigital Technology Corporation Method for performing wireless switching
EP1389856A1 (en) 2002-08-13 2004-02-18 Siemens Aktiengesellschaft Method to allocate radio resources in an ad-hoc radio communication system
US7231220B2 (en) 2002-10-01 2007-06-12 Interdigital Technology Corporation Location based method and system for wireless mobile unit communication
US7480737B2 (en) * 2002-10-25 2009-01-20 International Business Machines Corporation Technique for addressing a cluster of network servers
US7698550B2 (en) * 2002-11-27 2010-04-13 Microsoft Corporation Native wi-fi architecture for 802.11 networks
GB2396775B (en) 2002-12-23 2005-04-13 Motorola Inc Method and apparatus for establishing direct communication for mobiles in a radio communication system
JP2004260258A (en) * 2003-02-24 2004-09-16 Oki Electric Ind Co Ltd Wireless lan system
GB0307913D0 (en) * 2003-04-05 2003-05-14 Hewlett Packard Development Co Management of peer-to-peer network using reputation services
US7027827B2 (en) * 2003-05-19 2006-04-11 Motorola, Inc. Method and apparatus for channel sharing between multiple communication systems
WO2005004437A1 (en) * 2003-06-25 2005-01-13 Hotspot Wireless Devices, Inc. Systems and metods using multiprotocol communication
KR100526185B1 (en) 2003-08-14 2005-11-03 삼성전자주식회사 Method And Apparatus for Enhancing Transfer Rate Using DLP And Multi-Channel In Wireless Lan Using PCF And DCF
US20060020797A1 (en) * 2004-07-08 2006-01-26 Kan Zhang Method for verifying a secure association between devices
CA2573214C (en) * 2004-07-09 2013-06-11 Codemate Aps Peer of a peer-to-peer network and such network
US8159999B2 (en) * 2005-01-25 2012-04-17 Interdigital Technology Corporation Peer-to-peer wireless communication system
US7529255B2 (en) * 2005-04-21 2009-05-05 Microsoft Corporation Peer-to-peer multicasting using multiple transport protocols
US20070076648A1 (en) * 2005-09-30 2007-04-05 Yong Yean K Method and apparatus for enhanced WLAN access point bandwidth via use of a WLAN mailbox
US20070097934A1 (en) * 2005-11-03 2007-05-03 Jesse Walker Method and system of secured direct link set-up (DLS) for wireless networks
US8077683B2 (en) * 2005-11-03 2011-12-13 Interdigital Technology Corporation Method and system for performing peer-to-peer communication between stations within a basic service set
WO2007067099A1 (en) * 2005-12-05 2007-06-14 Telefonaktiebolaget Lm Ericsson (Publ) A wireless station and method in a wireless station for initiating resource measuremets
EP2041921B1 (en) * 2006-07-19 2013-12-04 STMicroelectronics Srl Method, apparatuses and program product for enabling multi-channel direct link connection in a communication network such as wlan

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030231608A1 (en) * 2002-06-12 2003-12-18 Wentink Maarten Menzo Direct link protocol in wireless local area networks
US20050036469A1 (en) * 2002-06-12 2005-02-17 Globespan Virata Incorporated Event-based multichannel direct link
US20060168343A1 (en) * 2003-03-07 2006-07-27 Koninklijke Philips Electronics N.V. Method and system for radio link establishment and maintenance with p2p communication in wireless communication
US20050226183A1 (en) * 2004-04-09 2005-10-13 Sitarama Penumetsa Systems and methods for implementing an enhanced multi-channel direct link protocol between stations in a wireless LAN environment
US20060056336A1 (en) * 2004-09-10 2006-03-16 Dacosta Behram M Method for data synchronization with mobile wireless devices

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8964667B2 (en) * 2008-11-24 2015-02-24 Qualcomm Incorporated Air interface selection between nodes in peer-to-peer/ad-hoc networks
JP2015082831A (en) * 2013-10-24 2015-04-27 富士通株式会社 Radio communication device, radio communication method, and radio communication system
CN107231702A (en) * 2016-03-24 2017-10-03 中兴通讯股份有限公司 The method for building up of direct connected link and its method and node for realizing data transfer
US11324061B2 (en) * 2017-08-10 2022-05-03 Canon Kabushiki Kaisha Communication apparatus, computer readable storage medium, and control method of communication apparatus
US11751267B2 (en) 2017-08-10 2023-09-05 Canon Kabushiki Kaisha Communication apparatus having different bandwidth modes depending on whether communication uses an external base station, computer readable storage medium, and control method of communication apparatus
CN107947879A (en) * 2017-11-23 2018-04-20 中国船舶重工集团公司第七〇九研究所 Ship communication channel switching device, system and its application method

Also Published As

Publication number Publication date
KR20080074922A (en) 2008-08-13
US20070104138A1 (en) 2007-05-10
TW201352048A (en) 2013-12-16
KR101068589B1 (en) 2011-09-30
EP1949609A1 (en) 2008-07-30
CA2628365A1 (en) 2007-05-18
JP2009515477A (en) 2009-04-09
BRPI0619692A2 (en) 2011-10-11
RU2010126194A (en) 2011-12-27
AU2006312040A1 (en) 2007-05-18
RU2008122068A (en) 2009-12-10
AU2006312040B2 (en) 2009-12-10
AR056767A1 (en) 2007-10-24
JP5070216B2 (en) 2012-11-07
KR20080070740A (en) 2008-07-30
CN101313527A (en) 2008-11-26
RU2395934C2 (en) 2010-07-27
AU2010200899A1 (en) 2010-04-01
TW201038104A (en) 2010-10-16
WO2007055993A1 (en) 2007-05-18
TW200719743A (en) 2007-05-16
TWI419595B (en) 2013-12-11
CN102883447A (en) 2013-01-16
US20120076049A1 (en) 2012-03-29
CN102883448A (en) 2013-01-16
EP2683119A2 (en) 2014-01-08
US8452289B2 (en) 2013-05-28
US8077683B2 (en) 2011-12-13
JP2012191669A (en) 2012-10-04

Similar Documents

Publication Publication Date Title
US8452289B2 (en) Method and system for performing peer-to-peer communication between stations within a basic service set
US11134439B2 (en) Self-organizing network (SON) with fast initial link setup (FILS)
US9198082B2 (en) Method and system for autonomous channel coordination for a wireless distribution system
TWI391010B (en) Accelerating discovery of access points in a wireless local area network
KR101374451B1 (en) Peer-to-peer wireless communication systeam
US7957742B2 (en) WLAN having load balancing by access point admission/termination
JP4642109B2 (en) Transmission power and reception power control method in mesh system
KR101092763B1 (en) Procedure of setting up peer link in wireless mesh network and wireless station supporting the same
US20080025275A1 (en) Wireless local area network and method thereof
US9998921B2 (en) Self-organizing network (SON) with fast initial link setup (FILS)
JP2008011571A (en) Robust and fast handover in wireless local area network
US20220240264A1 (en) High priority medium access
US20230247703A1 (en) Multi-link reconfiguration method and apparatus
Abusubaih et al. Inter-AP Coordination Protocols

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION