US20140044115A1 - Peer-to-peer wireless communication system - Google Patents
Peer-to-peer wireless communication system Download PDFInfo
- Publication number
- US20140044115A1 US20140044115A1 US14/051,662 US201314051662A US2014044115A1 US 20140044115 A1 US20140044115 A1 US 20140044115A1 US 201314051662 A US201314051662 A US 201314051662A US 2014044115 A1 US2014044115 A1 US 2014044115A1
- Authority
- US
- United States
- Prior art keywords
- sta
- qsta
- request
- application
- response message
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
-
- 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
- H04L67/1061—Peer-to-peer [P2P] networks using node-based peer discovery mechanisms
- H04L67/1068—Discovery involving direct consultation or announcement among potential requesting and potential source peers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
-
- 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
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
Definitions
- the present invention is related to a wireless communication system including a plurality of wireless stations (STAs) and an access point (AP), (i.e., a centralized controller), and a wireless communication system including a plurality of STAs without a centralized controller, (i.e., an Ad hoc network). More particularly, the present invention is related to a method and system for establishing data transfers between the STAs using a direct link setup (DLS).
- DLS direct link setup
- STAs are not allowed to transmit data packets directly to other STAs in a Basic Service Set (BSS) and, instead, must always rely on the AP for the delivery of the data packets.
- STAs with a quality of service (QoS) facility i.e., QSTAs
- QSTAs quality of service
- DLS Data transfer protocol
- the IEEE 802.11e standard is associated with the support of QoS features such as service differentiation, block acknowledgement (ACK) and DLS.
- ACK block acknowledgement
- the STAs that support these IEEE 802.11e features are referred as QSTAs.
- an AP that supports these IEEE 802.11e features is referred to as a QAP.
- the need for the DLS is motivated by the fact that the intended recipient STA may be in a power save mode, whereby the recipient QSTA may only be activated, (i.e., awakened), by an AP with a QoS facility, (i.e., QAP).
- the DLS exchanges a rate set and other information between a transmitter in one QSTA and a receiver in another QSTA.
- DLS messages may be used to attach security information elements (IEs).
- the present invention is related to a peer-to-peer communication system using a DLS.
- a mobile station (STA) establishes a direct communication link with another STA by sending a message requesting a DLS to an access point (AP), (i.e., a centralized controller).
- the AP may accept or reject the DLS request based on channel measurements. If the DLS request is accepted, the DLS is established such that the STAs may directly communicate with each other.
- An established DLS connection may be torn down by the AP sending a message including a DLS teardown request to one of the STAs, or based on channel measurements.
- the system may be an Ad hoc network comprising a plurality of STAs without an AP where each STA maintains a database of one-hop and two-hop STAs, and establishes a direct link to other STAs after informing neighboring STAs of an intention to establish a direct communication link.
- a first non-AP STA may receive a message for establishing a direct communication link from a second non-AP STA.
- the message may include a service priority.
- the first non-AP STA may transmit another message in response to receiving the message from the second non-AP STA, and communicate directly with the second non-AP STA.
- a first non-AP STA may transmit a request to another non-AP STA.
- the request may include information regarding an application.
- the first non-AP STA may receive a response from the other non-AP STA.
- the response may include information regarding the application.
- FIG. 1 is an exemplary block diagram of a wireless communication system including a plurality of QSTAs and a QAP in accordance with the present invention
- FIG. 2 is a block diagram of an Ad hoc network comprising a plurality of STAs for supporting peer-to-peer communication in accordance with the present invention.
- FIG. 3 is a block diagram of a network comprising a plurality of STAs and an AP for supporting peer-to-peer communication in accordance with the present invention.
- STA wireless transmit/receive unit
- AP wireless transmit/receive unit
- AP includes but is not limited to a base station, a Node-B, a site controller, a centralized 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 present invention facilitates the establishment of data transfers between QSTAs of a peer-to-peer wireless communication system, such as a wireless local area network (WLAN) or a wireless wide area network (WWAN), using a DLS.
- the present invention further performs a signaling procedure for establishing the DLS, tearing down the DLS, and performing a data transfer with hybrid coordination function controlled channel access (HCCA) or enhanced distributed channel access (EDCA).
- HCCA hybrid coordination function controlled channel access
- EDCA enhanced distributed channel access
- FIG. 1 is an exemplary block diagram of a wireless communication system 100 including a plurality of QSTAs 12 a , 12 b and a QAP 10 .
- the QSTA 12 a intends to exchange data packets directly with the QSTA 12 b .
- the QSTA 12 a invokes a DLS by including a DLS request frame in a message 102 sent to the QAP 10 by the QSTA 12 a .
- the message 102 may include a rate set, capability information of the QSTA 12 a , the medium access control (MAC) addresses of the QSTAs 12 a and 12 b , or other necessary information.
- MAC medium access control
- the QAP 10 forwards the DLS request frame in a message 104 to the QSTA 12 b . If the QSTA 12 b accepts the DLS request frame, the QSTA 12 b includes a DLS response frame in a message 106 sent to the QAP 10 by the QSTA 12 b which contains a rate set. The QAP 10 includes the DLS response frame in a message 108 sent to the QSTA 12 a . Thereafter, a direct communication link 110 is established between the QSTA 12 a and the QSTA 12 b.
- BSS basic service set
- the QAP 10 may reject the DLS request received from the QSTA 12 a due to inadequate channel quality of signals associated with the QSTAs 12 a , 12 b , and thus the QAP 10 will not send the message 104 to the QSTA 12 b .
- the DLS request frame included in the message 102 includes an IE for optimal physical layer (PHY) rate and/or other channel quality information between the QSTAs 12 a and 12 b . This information may be obtained from previous transmissions between the QSTA 12 a and the QSTA 12 b , or by listening to the transmissions from the QSTA 12 b , (received by the QAP 10 or other QSTAs). If the information is not available, the QSTA 12 a sends the message 102 with the IE set to 0, (i.e., null).
- the QSTA 12 a may include a DLS discovery request frame in a message 112 sent to the QAP 10 . If the QAP 10 is aware of the QSTA 12 b , the QAP 10 includes a DLS discovery response frame with relevant MAC information in a message 114 sent to the QSTA 12 a . Otherwise, the QAP 10 includes the DLS discovery response frame and an indication that the QSTA 12 b could not be located in the message 114 . This procedure is performed before the DLS is established.
- the QAP 10 may optionally include a DLS measurement request packet in a message 116 sent to the QSTA 12 a to request a channel quality measurement.
- the message 116 may also include information regarding the capability of QSTA 12 b to perform a channel quality measurement.
- the capability information includes, but is not limited to, a number of antennas, and an indication of the type of antenna technology supported such as multiple-input multiple-output (MIMO), antenna diversity or any other smart antenna technology.
- MIMO multiple-input multiple-output
- the QSTA 12 a responds to the message 116 by including a measurement response packet in a message 118 sent to the QAP 10 .
- the message 118 may also include the channel quality measurement results between the QSTA 12 a and the QSTA 12 b .
- Channel measurements may include received signal strength indication (RSSI) between QSTA 12 a to QSTA 12 b , channel quality indicator (CQI) between QSTA 12 a and QSTA 12 b and interference level at QSTA 12 a .
- RSSI is measured at QSTA 12 a from QSTA 12 b by passively listening to packets sent from the QSTA 12 b to the QAP 10 or other QSTAs/STAs.
- CQI measurements may be obtained by actively transmitting packets from QSTA 12 a to QSTA 12 b even before the DLS is implemented.
- the messages 116 and 118 may be exchanged before message 108 is sent by the QAP 10 or during an ongoing DLS session.
- the DLS may be torn down by either one of the two QSTAs 12 a , 12 b .
- the DLS teardown process cannot be initiated by the QAP 110 .
- the QSTAs 12 a , 12 b can teardown the DLS due to inactivity or completion of an application.
- Each QSTA 12 a , 12 b may include a timer which is reset each time a packet is received, (a data packet or an acknowledgement (ACK) packet), from the other QSTA 12 a , 12 b .
- the timer is used to end the DLS due to a link failure or completion of an application.
- the QSTA 12 a , 12 b initiates a DLS teardown process by including a DLS teardown packet in a message 120 a , 120 b sent to the QAP 10 . After the DLS teardown process is completed, all packets sent by the QSTAs 12 a , 12 b are processed by the QAP 10 .
- Either of the QSTAs 12 a , 12 b may send the send the DLS teardown packet to the QAP 10 .
- the QAP 10 will forward the DLS teardown message to the other one of the QSTAs 12 a , 12 b .
- the DLS teardown process may be implemented in any access method, (e.g., an assigned resource allocation, a management resource allocation, HCCA or EDCF).
- the QAP 10 may initiate a DLS teardown by sending a DLS response message 108 including a DLS teardown action field to either of the QSTAs 12 a or 12 b .
- the action frame includes a timer information field whereby the QSTA 12 a or 12 b must respond by sending a DLS teardown message to the QAP 10 before the timer expires. This feature is backward compatible with current WLAN standards.
- the QAP 10 may initiate a DLS between two QSTAs 12 a and 12 b .
- the QAP 10 sends a DLS initiate message to each of the QSTAs 12 a and 12 b .
- the QAP 10 may send a DLS response message to both of the QSTAs 12 a and 12 b .
- the DLS initiate message is a new message introduced by the present invention to allow the QAP 10 to initiate a DLS between two STAs.
- the DLS request message and the DLS response message may be modified to initiate a DLS from the QAP 10 instead of creating a new DLS initiate message.
- the QSTAs may use the DLS for performing data transfers using any of the access mechanisms defined in IEEE 802.11e standards, such as an HCCA or an EDCF.
- the present invention provides several action frame formats for DLS management purposes.
- An action field immediately after the category field, differentiates the formats.
- the action field values associated with each frame format are defined in Table 1.
- a DLS discovery request frame is for a QSTA to get a MAC address of another QSTA by sending application requirements.
- a DLS discovery response frame is for a QAP to respond back with the MAC address of the requested QSTA.
- a conventional DLS teardown frame is modified to add an action field for DLS teardown by the QAP.
- An information field called a timer is included in the DLS teardown frame. The QAP expects that a QSTA would send the DLS teardown message to the QAP before the timer expires.
- a conventional DLS request frame is modified to include an additional element to send optimal PHY data rate and certain other channel characteristic between the two QSTAs.
- a DLS measurement request frame is for measurement request from a QAP to a QSTA.
- the DLS measurement request frame contains capability information of another QSTA.
- a DLS measurement response frame is for DLS measurement response from a QSTA to a QAP.
- the DLS measurement response frame contains measurement information and another QSTA MAC address.
- FIG. 2 is a block diagram of an Ad hoc network 200 comprising a plurality of QSTAs 12 a , 12 b , 12 c , 12 d , 12 e , 12 f for supporting peer-to-peer communication in accordance with another embodiment of the present invention.
- Each of the QSTAs 12 a - 12 f maintains a database (not shown) of all of the QSTAs 12 a - 12 f within one hop and two hops.
- One hop QSTAs are QSTAs that can hear each other and are referred to hereinafter as “neighbors”.
- Two hop QSTAs are QSTAs that cannot be heard directly, but a neighbor can hear.
- the transmitting QSTA needs to tell its neighbors that the medium is in use and the neighbors cannot receive without interference.
- the receiving QSTA needs to tell its neighbors that the medium is in use and that the neighbors should not transmit. This may require some handshaking to be properly implemented, but it will yield better overall medium efficiency.
- Neighboring QSTAs send signals between each other to report capabilities via capability messages.
- the capability messages may be transmitted as a part of an initialization process when a QSTA is powered on.
- the capability messages may be periodic or event-triggered by some activity or inactivity of any QSTA, or can also be a reply to an information request signal initiated by one of the QSTAs.
- a new QSTA may send a broadcast message to neighbors asking for active transmission.
- the new QSTA may passively scan the channels and then send directed packets.
- any QSTA in active secession may send the information back to the new QSTA.
- the QSTAs follow a random back off before responding. Once the new QSTA gets the information, the new QSTA uses this information to optimally allocate resources for starting a new application.
- the QSTA 12 a and the QSTA 12 b intend to communicate with each other.
- the QSTA 12 a and the QSTA 12 b Before running an application between QSTA 12 a and QSTA 12 b , one or both of the QSTA 12 a and QSTA 12 b inform neighbors by sending messages 202 about the application.
- the message 202 may be sent as a broadcast and/or propagated to the two hop QSTAs. Alternatively, the message 202 may include a packet directed to specific QSTAs.
- the QSTA 12 a and the QSTA 12 b may communicate by exchanging messages 204 without interference.
- Information that is communicated between the QSTAs 12 a , 12 b may include, but is not limited to, bandwidth requirement, identification of the transmitting QSTA and the receiving QSTA, a frequency band, a preferred modulation mode, sub-carriers, a MIMO enabled code, or the like.
- This information should preferably be communicated during the establishment of DLS. However, it may be communicated during the DLS communication to update certain parameters such as preferred modulation. This information may be resent in response to a request from another QSTA. The QSTAs can ask for this information to update their statistics or to start a new application.
- VoIP voice-over-IP
- 911 voice-over-IP
- VoIP voice-over-IP
- the disruption can be performed by a message exchange between other transmitting QSTAs to stop their service, or by a message exchange to re-negotiate a bandwidth, a sub-carrier, a frequency band, or the like.
- FIG. 3 is a block diagram of a network 300 including a plurality of QSTAs 12 a - 12 f and a QAP 14 in accordance with the present invention. Similar to the Ad hoc network 200 of FIG. 2 , each of the QSTAs 12 a - 12 f maintains a database of all QSTAs with which each QSTA 12 a - 12 f can directly communicate and with which each QSTA 12 a - 12 f can communicate through the QAP 14 .
- the QAP 14 may provide the database of QSTAs available through the QAP 14 .
- Each of the QSTAs 12 a - 12 f is connected to the QAP 14 .
- all traffic does not necessarily originate from or pass through the QAP 14 .
- two QSTAs may communicate with each other directly without sending the traffic through the QAP 14 .
- This process may be controlled by the QAP 14 and a distributed control which is similar to the non-AP case described above with reference to FIG. 2 .
- a QSTA 12 a intends to communicate with a QSTA 12 b .
- the QSTA 12 a sends a message 302 to the QAP 14 which includes at least one of a destination ID, a required bandwidth, channel information, a direct hop to the destination, or the like.
- the QAP 14 determines whether to let the two QSTAs 12 a , 12 b directly communicate, or communicate through the QAP 14 .
- the QAP 14 may make this determination based on the signal strength between the two QSTAs 12 a , 12 b , current network load, activity of the QAP 14 , capability of the two QSTAs 12 a , 12 b , or the like.
- the QAP 14 sends a message 304 including allocation information for assigning resources, (e.g., a certain time, sub-carriers or antennas), for the connection based on the requirements and indicate what is available.
- a direct communication link is then established 306 between the QSTAs 12 a and 12 b.
- the allocation information in the message 304 is sent to the QSTA 12 a and QSTA 12 b .
- the other QSTAs 12 c - 12 f may also be informed of the direct communication link 306 so that they are aware of the resource being in use.
- the QSTAs 12 c - 12 f can be informed by broadcasting the message 304 to all of the QSTAs 12 a - 12 f or by requiring all QSTAs 12 a - 12 f to monitor the QAP 14 for the message 304 , even if it is not intended for their use. This may prevent other QSTAs 12 a - 12 f from using the same resources.
Abstract
A method and apparatus may be used for peer-to-peer communications. A first non-AP STA may transmit a request to another non-AP STA. The request may include information regarding an application. The first non-AP STA may receive a response from the other non-AP STA. The response may include information regarding the application.
Description
- This application is a continuation of U.S. patent application Ser. No. 13/444,950 filed Apr. 12, 2012, which issued on Oct. 15, 2013 as U.S. Pat. No. 8,559,375, which is a continuation of U.S. patent application Ser. No. 11/234,792 filed Sep. 23, 2005, which issued on Apr. 17, 2012 as U.S. Pat. No. 8,159,999, which claims the benefit of U.S. Provisional Application No. 60/646,662 filed Jan. 25, 2005, which is hereby incorporated by reference.
- The present invention is related to a wireless communication system including a plurality of wireless stations (STAs) and an access point (AP), (i.e., a centralized controller), and a wireless communication system including a plurality of STAs without a centralized controller, (i.e., an Ad hoc network). More particularly, the present invention is related to a method and system for establishing data transfers between the STAs using a direct link setup (DLS).
- Typically, STAs are not allowed to transmit data packets directly to other STAs in a Basic Service Set (BSS) and, instead, must always rely on the AP for the delivery of the data packets. However, STAs with a quality of service (QoS) facility, (i.e., QSTAs), may transmit data packets directly to another QSTA by establishing a data transfer using a DLS. The IEEE 802.11e standard is associated with the support of QoS features such as service differentiation, block acknowledgement (ACK) and DLS. The STAs that support these IEEE 802.11e features are referred as QSTAs. Similarly, an AP that supports these IEEE 802.11e features is referred to as a QAP. The need for the DLS is motivated by the fact that the intended recipient STA may be in a power save mode, whereby the recipient QSTA may only be activated, (i.e., awakened), by an AP with a QoS facility, (i.e., QAP). The DLS exchanges a rate set and other information between a transmitter in one QSTA and a receiver in another QSTA. DLS messages may be used to attach security information elements (IEs).
- The present invention is related to a peer-to-peer communication system using a DLS. A mobile station (STA) establishes a direct communication link with another STA by sending a message requesting a DLS to an access point (AP), (i.e., a centralized controller). The AP may accept or reject the DLS request based on channel measurements. If the DLS request is accepted, the DLS is established such that the STAs may directly communicate with each other. An established DLS connection may be torn down by the AP sending a message including a DLS teardown request to one of the STAs, or based on channel measurements. The system may be an Ad hoc network comprising a plurality of STAs without an AP where each STA maintains a database of one-hop and two-hop STAs, and establishes a direct link to other STAs after informing neighboring STAs of an intention to establish a direct communication link.
- A first non-AP STA may receive a message for establishing a direct communication link from a second non-AP STA. The message may include a service priority. The first non-AP STA may transmit another message in response to receiving the message from the second non-AP STA, and communicate directly with the second non-AP STA.
- A first non-AP STA may transmit a request to another non-AP STA. The request may include information regarding an application. The first non-AP STA may receive a response from the other non-AP STA. The response may include information regarding the application.
- A more detailed understanding of the invention may be had from the following description of a preferred embodiment, given by way of example and to be understood in conjunction with the accompanying drawings wherein:
-
FIG. 1 is an exemplary block diagram of a wireless communication system including a plurality of QSTAs and a QAP in accordance with the present invention; -
FIG. 2 is a block diagram of an Ad hoc network comprising a plurality of STAs for supporting peer-to-peer communication in accordance with the present invention; and -
FIG. 3 is a block diagram of a network comprising a plurality of STAs and an AP for supporting peer-to-peer communication in accordance with the present invention. - Hereafter, the terminology “STA” or “QSTA” includes but is not limited to a wireless transmit/receive unit (WTRU), a user equipment, a mobile station, 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” or “QAP” includes but is not limited to a base station, a Node-B, a site controller, a centralized 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.
- The present invention facilitates the establishment of data transfers between QSTAs of a peer-to-peer wireless communication system, such as a wireless local area network (WLAN) or a wireless wide area network (WWAN), using a DLS. The present invention further performs a signaling procedure for establishing the DLS, tearing down the DLS, and performing a data transfer with hybrid coordination function controlled channel access (HCCA) or enhanced distributed channel access (EDCA).
- Additional details regarding DLS, HCCA and EDCA are disclosed in copending U.S. patent application Ser. No. 11/199,446 entitled “Method and System for Controlling Access to a Wireless Communication Medium” by Sudheer A. Grandhi et al., which is incorporated by reference as if fully set forth.
-
FIG. 1 is an exemplary block diagram of awireless communication system 100 including a plurality ofQSTAs QAP 10. Similar to conventional wireless communication systems, the QSTA 12 a intends to exchange data packets directly with the QSTA 12 b. The QSTA 12 a invokes a DLS by including a DLS request frame in amessage 102 sent to theQAP 10 by the QSTA 12 a. Themessage 102 may include a rate set, capability information of theQSTA 12 a, the medium access control (MAC) addresses of theQSTAs QSTA 12 b is associated with theQAP 10 in a basic service set (BSS) that has a policy which allows direct data transfers to take place between QSTAs, theQAP 10 forwards the DLS request frame in amessage 104 to theQSTA 12 b. If theQSTA 12 b accepts the DLS request frame, theQSTA 12 b includes a DLS response frame in amessage 106 sent to theQAP 10 by theQSTA 12 b which contains a rate set. TheQAP 10 includes the DLS response frame in amessage 108 sent to theQSTA 12 a. Thereafter, adirect communication link 110 is established between the QSTA 12 a and the QSTA 12 b. - In accordance with the present invention, the
QAP 10 may reject the DLS request received from theQSTA 12 a due to inadequate channel quality of signals associated with theQSTAs QAP 10 will not send themessage 104 to theQSTA 12 b. The DLS request frame included in themessage 102 includes an IE for optimal physical layer (PHY) rate and/or other channel quality information between theQSTAs QSTA 12 a and theQSTA 12 b, or by listening to the transmissions from theQSTA 12 b, (received by theQAP 10 or other QSTAs). If the information is not available, the QSTA 12 a sends themessage 102 with the IE set to 0, (i.e., null). - If the QSTA 12 a needs to perform a search for the
QSTA 12 b, theQSTA 12 a may include a DLS discovery request frame in amessage 112 sent to theQAP 10. If theQAP 10 is aware of theQSTA 12 b, theQAP 10 includes a DLS discovery response frame with relevant MAC information in amessage 114 sent to theQSTA 12 a. Otherwise, theQAP 10 includes the DLS discovery response frame and an indication that theQSTA 12 b could not be located in themessage 114. This procedure is performed before the DLS is established. - Referring to
FIG. 1 , additional messages may be further exchanged before or after the DLS is established. TheQAP 10 may optionally include a DLS measurement request packet in amessage 116 sent to theQSTA 12 a to request a channel quality measurement. Themessage 116 may also include information regarding the capability ofQSTA 12 b to perform a channel quality measurement. The capability information includes, but is not limited to, a number of antennas, and an indication of the type of antenna technology supported such as multiple-input multiple-output (MIMO), antenna diversity or any other smart antenna technology. The QSTA 12 a responds to themessage 116 by including a measurement response packet in amessage 118 sent to theQAP 10. Themessage 118 may also include the channel quality measurement results between the QSTA 12 a and theQSTA 12 b. Channel measurements may include received signal strength indication (RSSI) between QSTA12 a to QSTA12 b, channel quality indicator (CQI) between QSTA 12 a andQSTA 12 b and interference level at QSTA 12 a. RSSI is measured at QSTA 12 a fromQSTA 12 b by passively listening to packets sent from theQSTA 12 b to theQAP 10 or other QSTAs/STAs. CQI measurements may be obtained by actively transmitting packets from QSTA 12 a to QSTA 12 b even before the DLS is implemented. Themessages message 108 is sent by theQAP 10 or during an ongoing DLS session. - In conventional wireless communication systems, the DLS may be torn down by either one of the two QSTAs 12 a, 12 b. The DLS teardown process cannot be initiated by the
QAP 110. The QSTAs 12 a, 12 b can teardown the DLS due to inactivity or completion of an application. Each QSTA 12 a, 12 b may include a timer which is reset each time a packet is received, (a data packet or an acknowledgement (ACK) packet), from the other QSTA 12 a, 12 b. The timer is used to end the DLS due to a link failure or completion of an application. If no packets are received before the timer expires, or an application is completed, the QSTA 12 a, 12 b initiates a DLS teardown process by including a DLS teardown packet in amessage QAP 10. After the DLS teardown process is completed, all packets sent by the QSTAs 12 a, 12 b are processed by theQAP 10. - Either of the QSTAs 12 a, 12 b may send the send the DLS teardown packet to the
QAP 10. Once the DLS teardown message 120 is sent by one of the QSTAs 12 a, 12 b, theQAP 10 will forward the DLS teardown message to the other one of the QSTAs 12 a, 12 b. The DLS teardown process may be implemented in any access method, (e.g., an assigned resource allocation, a management resource allocation, HCCA or EDCF). - In accordance with the present invention, the
QAP 10 may initiate a DLS teardown by sending aDLS response message 108 including a DLS teardown action field to either of the QSTAs 12 a or 12 b. The action frame includes a timer information field whereby the QSTA 12 a or 12 b must respond by sending a DLS teardown message to theQAP 10 before the timer expires. This feature is backward compatible with current WLAN standards. - The
QAP 10 may initiate a DLS between two QSTAs 12 a and 12 b. TheQAP 10 sends a DLS initiate message to each of the QSTAs 12 a and 12 b. Once theQAP 10 receives a DLS request message from both of the QSTAs 12 a and 12 b in the response of the DLS initiate message, theQAP 10 may send a DLS response message to both of the QSTAs 12 a and 12 b. The DLS initiate message is a new message introduced by the present invention to allow theQAP 10 to initiate a DLS between two STAs. Alternatively, the DLS request message and the DLS response message may be modified to initiate a DLS from theQAP 10 instead of creating a new DLS initiate message. - Data transfer after the DLS is established is explained hereinafter. The QSTAs may use the DLS for performing data transfers using any of the access mechanisms defined in IEEE 802.11e standards, such as an HCCA or an EDCF.
- The present invention provides several action frame formats for DLS management purposes. An action field, immediately after the category field, differentiates the formats. The action field values associated with each frame format are defined in Table 1.
-
TABLE 1 Action Field Value Meaning 0 DLS request 1 DLS response 2 DLS teardown 3-255 Reserved
Additional action field values are defined in accordance with the present invention. A DLS discovery request frame is for a QSTA to get a MAC address of another QSTA by sending application requirements. A DLS discovery response frame is for a QAP to respond back with the MAC address of the requested QSTA. A conventional DLS teardown frame is modified to add an action field for DLS teardown by the QAP. An information field called a timer is included in the DLS teardown frame. The QAP expects that a QSTA would send the DLS teardown message to the QAP before the timer expires. A conventional DLS request frame is modified to include an additional element to send optimal PHY data rate and certain other channel characteristic between the two QSTAs. A DLS measurement request frame is for measurement request from a QAP to a QSTA. The DLS measurement request frame contains capability information of another QSTA. A DLS measurement response frame is for DLS measurement response from a QSTA to a QAP. The DLS measurement response frame contains measurement information and another QSTA MAC address. -
FIG. 2 is a block diagram of an Ad hocnetwork 200 comprising a plurality of QSTAs 12 a, 12 b, 12 c, 12 d, 12 e, 12 f for supporting peer-to-peer communication in accordance with another embodiment of the present invention. Each of the QSTAs 12 a-12 f maintains a database (not shown) of all of the QSTAs 12 a-12 f within one hop and two hops. One hop QSTAs are QSTAs that can hear each other and are referred to hereinafter as “neighbors”. Two hop QSTAs are QSTAs that cannot be heard directly, but a neighbor can hear. - There are two groups of QSTAs that need to be informed when the media will be in use, the QSTAs that can hear the transmission and the QSTAs that could possibly transmit and interfere with the reception. Therefore, only a transmitting QSTA and a receiving QSTA need to inform their neighbor QSTAs, respectively. The transmitting QSTA needs to tell its neighbors that the medium is in use and the neighbors cannot receive without interference. The receiving QSTA needs to tell its neighbors that the medium is in use and that the neighbors should not transmit. This may require some handshaking to be properly implemented, but it will yield better overall medium efficiency.
- Neighboring QSTAs send signals between each other to report capabilities via capability messages. The capability messages may be transmitted as a part of an initialization process when a QSTA is powered on. The capability messages may be periodic or event-triggered by some activity or inactivity of any QSTA, or can also be a reply to an information request signal initiated by one of the QSTAs.
- A new QSTA may send a broadcast message to neighbors asking for active transmission. The new QSTA may passively scan the channels and then send directed packets. Upon reception of the request, any QSTA in active secession may send the information back to the new QSTA. The QSTAs follow a random back off before responding. Once the new QSTA gets the information, the new QSTA uses this information to optimally allocate resources for starting a new application.
- For example, in the Ad hoc
network 200 ofFIG. 2 , the QSTA 12 a and theQSTA 12 b intend to communicate with each other. Before running an application between QSTA 12 a andQSTA 12 b, one or both of the QSTA 12 a andQSTA 12 b inform neighbors by sendingmessages 202 about the application. Themessage 202 may be sent as a broadcast and/or propagated to the two hop QSTAs. Alternatively, themessage 202 may include a packet directed to specific QSTAs. After informing neighboring QSTAs of the intended communication, the QSTA 12 a and theQSTA 12 b may communicate by exchangingmessages 204 without interference. - Information that is communicated between the QSTAs 12 a, 12 b may include, but is not limited to, bandwidth requirement, identification of the transmitting QSTA and the receiving QSTA, a frequency band, a preferred modulation mode, sub-carriers, a MIMO enabled code, or the like. This information should preferably be communicated during the establishment of DLS. However, it may be communicated during the DLS communication to update certain parameters such as preferred modulation. This information may be resent in response to a request from another QSTA. The QSTAs can ask for this information to update their statistics or to start a new application.
- Some services or applications may have priority over others, whereby they may disrupt other services if required. An example of this service is voice-over-IP (VoIP) for emergency (911) calls. The disruption can be performed by a message exchange between other transmitting QSTAs to stop their service, or by a message exchange to re-negotiate a bandwidth, a sub-carrier, a frequency band, or the like.
-
FIG. 3 is a block diagram of anetwork 300 including a plurality of QSTAs 12 a-12 f and aQAP 14 in accordance with the present invention. Similar to the Ad hocnetwork 200 ofFIG. 2 , each of the QSTAs 12 a-12 f maintains a database of all QSTAs with which each QSTA 12 a-12 f can directly communicate and with which each QSTA 12 a-12 f can communicate through theQAP 14. TheQAP 14 may provide the database of QSTAs available through theQAP 14. - Each of the QSTAs 12 a-12 f is connected to the
QAP 14. However, all traffic does not necessarily originate from or pass through theQAP 14. Thus, two QSTAs may communicate with each other directly without sending the traffic through theQAP 14. This process may be controlled by theQAP 14 and a distributed control which is similar to the non-AP case described above with reference toFIG. 2 . - In the process controlled by the
QAP 14, for example, a QSTA 12 a intends to communicate with a QSTA 12 b. The QSTA 12 a sends amessage 302 to theQAP 14 which includes at least one of a destination ID, a required bandwidth, channel information, a direct hop to the destination, or the like. Based on the information provided inmessage 302, theQAP 14 determines whether to let the two QSTAs 12 a, 12 b directly communicate, or communicate through theQAP 14. TheQAP 14 may make this determination based on the signal strength between the two QSTAs 12 a, 12 b, current network load, activity of theQAP 14, capability of the two QSTAs 12 a, 12 b, or the like. TheQAP 14 sends amessage 304 including allocation information for assigning resources, (e.g., a certain time, sub-carriers or antennas), for the connection based on the requirements and indicate what is available. A direct communication link is then established 306 between the QSTAs 12 a and 12 b. - The allocation information in the
message 304 is sent to the QSTA 12 a andQSTA 12 b. The other QSTAs 12 c-12 f may also be informed of thedirect communication link 306 so that they are aware of the resource being in use. TheQSTAs 12 c-12 f can be informed by broadcasting themessage 304 to all of the QSTAs 12 a-12 f or by requiring all QSTAs 12 a-12 f to monitor theQAP 14 for themessage 304, even if it is not intended for their use. This may prevent other QSTAs 12 a-12 f from using the same resources. - 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)
1. A non-access point (non-AP) station (STA) comprising:
a transmitter and a receiver configured to communicate directly with a second non-AP STA;
wherein the transmitter is further configured to transmit a request to a remote non-AP STA for information regarding an application; and
wherein the receiver is further configured to receive a response message from the remote non-AP STA, wherein the response message includes information regarding the application.
2. The non-AP STA of claim 1 , wherein the information includes an application priority of the application indicating a relative priority of the application with respect to other applications.
3. The non-AP STA of claim 1 , wherein the information regarding the application priority indicates that the application may interrupt an ongoing application.
4. The non-AP STA of claim 1 , wherein the request includes capability information of the non-AP STA or discovery information.
5. The non-AP STA of claim 1 , wherein the response message includes capability information of the second non-AP STA or discovery information.
6. The non-AP STA of claim 1 , wherein the transmitter is further configured to transmit a request that includes a bandwidth requirement of the non-AP STA and the receiver is further configured to receive a response message that includes a bandwidth requirement of the second non-AP STA.
7. The non-AP STA of claim 1 , wherein the transmitter is further configured to transmit a request that includes an identification of the non-AP STA and the receiver is further configured to receive a response message that includes an identification of the second non-AP STA.
8. The non-AP STA of claim 1 , wherein the transmitter is further configured to transmit a request that includes a modulation mode of the non-AP STA and the receiver is further configured to receive a response message that includes a modulation mode of the second non-AP STA.
9. The non-AP STA of claim 1 , wherein the transmitter is further configured to transmit a request that includes a preferred subcarrier of the non-AP STA and the receiver is further configured to receive a response message that includes a preferred subcarrier of the second non-AP STA.
10. The non-AP STA of claim 1 , wherein the transmitter is further configured to transmit a request that includes a first multiple input multiple output (MIMO) enabled code and the receiver is configured to receive a response message that includes a second MIMO enabled code.
11. A method for use in a non-access point (non-AP) station (STA) comprising:
communicating directly with a second non-AP STA;
transmitting a request to a remote non-AP STA for information regarding an application; and
receiving a response message from the remote non-AP STA, wherein the response message includes information regarding the application,
12. The method of claim 11 , wherein the information includes an application priority of the application indicating a relative priority of the application with respect to other applications.
13. The method of claim 11 , wherein the information regarding the application priority indicates that the application may interrupt an ongoing application.
14. The method of claim 11 , wherein the request includes capability information of the non-AP STA or discovery information.
15. The method of claim 11 , wherein the response message includes capability information of the second non-AP STA or discovery information.
16. The method of claim 11 , wherein the request includes a bandwidth requirement of the non-AP STA and the response message includes a bandwidth requirement of the second non-AP STA.
17. The method of claim 11 , wherein the request includes an identification of the non-AP STA and the response message includes an identification of the second non-AP STA.
18. The method of claim 11 , wherein the request includes a modulation mode of the non-AP STA and the response message includes a modulation mode of the second non-AP STA.
19. The method of claim 11 , wherein the request includes a preferred subcarrier of the non-AP STA and the response message includes a preferred subcarrier of the second non-AP STA.
20. The method of claim 11 , wherein the request includes a first multiple input multiple output (MIMO) enabled code and the response message includes a second MIMO enabled code.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/051,662 US20140044115A1 (en) | 2005-01-25 | 2013-10-11 | Peer-to-peer wireless communication system |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US64666205P | 2005-01-25 | 2005-01-25 | |
US11/234,792 US8159999B2 (en) | 2005-01-25 | 2005-09-23 | Peer-to-peer wireless communication system |
US13/444,950 US8559375B2 (en) | 2005-01-25 | 2012-04-12 | Peer-to-peer wireless communication system |
US14/051,662 US20140044115A1 (en) | 2005-01-25 | 2013-10-11 | Peer-to-peer wireless communication system |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/444,950 Continuation US8559375B2 (en) | 2005-01-25 | 2012-04-12 | Peer-to-peer wireless communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140044115A1 true US20140044115A1 (en) | 2014-02-13 |
Family
ID=36696660
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/234,792 Active 2027-07-08 US8159999B2 (en) | 2005-01-25 | 2005-09-23 | Peer-to-peer wireless communication system |
US13/444,950 Expired - Fee Related US8559375B2 (en) | 2005-01-25 | 2012-04-12 | Peer-to-peer wireless communication system |
US14/051,662 Abandoned US20140044115A1 (en) | 2005-01-25 | 2013-10-11 | Peer-to-peer wireless communication system |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/234,792 Active 2027-07-08 US8159999B2 (en) | 2005-01-25 | 2005-09-23 | Peer-to-peer wireless communication system |
US13/444,950 Expired - Fee Related US8559375B2 (en) | 2005-01-25 | 2012-04-12 | Peer-to-peer wireless communication system |
Country Status (17)
Country | Link |
---|---|
US (3) | US8159999B2 (en) |
EP (1) | EP1842383A4 (en) |
JP (5) | JP5006212B2 (en) |
KR (6) | KR101278563B1 (en) |
AR (2) | AR052092A1 (en) |
AU (2) | AU2006208271B2 (en) |
BR (1) | BRPI0606246A2 (en) |
CA (1) | CA2595648A1 (en) |
DE (1) | DE202006001027U1 (en) |
GE (1) | GEP20125509B (en) |
IL (1) | IL184346A (en) |
MX (1) | MX2007008893A (en) |
MY (1) | MY141320A (en) |
NO (1) | NO20074335L (en) |
SG (1) | SG158914A1 (en) |
TW (4) | TW201304569A (en) |
WO (1) | WO2006081123A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10129920B2 (en) | 2014-11-10 | 2018-11-13 | Nec Corporation | Control apparatus, radio communication device, and method therefor |
US10264613B2 (en) | 2014-06-23 | 2019-04-16 | Fujitsu Connected Technologies Limited | Wireless communication system, wireless device, method of communications by wireless device, wireless base station, and method of communications by wireless base station |
CN110113822A (en) * | 2019-05-15 | 2019-08-09 | 武汉大学 | The heterogeneous network converged cut-in method for the wireless communication that faces the future |
Families Citing this family (76)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8159999B2 (en) * | 2005-01-25 | 2012-04-17 | Interdigital Technology Corporation | Peer-to-peer wireless communication system |
US7826408B1 (en) | 2005-03-14 | 2010-11-02 | Ozmo, Inc. | Apparatus and method for integrating short-range wireless personal area networks for a wireless local area network infrastructure |
US9036613B2 (en) * | 2005-03-14 | 2015-05-19 | Atmel Corporation | Method and apparatus for operating a wireless PAN network using an overlay protocol that enhances co-existence with a wireless LAN network |
US7577125B2 (en) * | 2005-07-08 | 2009-08-18 | Microsoft Corporation | Direct wireless client to client communication |
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 |
US8891497B1 (en) | 2006-03-14 | 2014-11-18 | Atmel Corporation | Method and apparatus for coordinating a wireless PAN network and a wireless LAN network |
US8432920B2 (en) * | 2006-09-19 | 2013-04-30 | Marvell World Trade Ltd. | Direct link setup mechanisms for wireless LANs |
US9198212B2 (en) | 2006-09-19 | 2015-11-24 | Marvell World Trade Ltd. | Direct link setup mechanisms for wireless LANs |
CN101675625B (en) | 2007-03-10 | 2013-07-17 | Lg电子株式会社 | Peer power save mode in tunneled direct link setup (tdls) wireless network |
US8078110B2 (en) * | 2007-07-09 | 2011-12-13 | Qualcomm Incorporated | Techniques for choosing and broadcasting receiver beamforming vectors in peer-to-peer (P2P) networks |
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 |
CN101803294B (en) * | 2007-09-18 | 2012-08-29 | Lg电子株式会社 | Direct link setup procedure in tunneled direct link setup wireless network and station supporting the procedure |
US8041375B2 (en) * | 2007-10-31 | 2011-10-18 | Qualcomm Incorporated | Methods and apparatus for use in peer to peer communications devices and/or systems relating to rate scheduling, traffic scheduling, rate control, and/or power control |
WO2009064105A2 (en) * | 2007-11-12 | 2009-05-22 | Lg Electronics Inc. | Method for selecting the best path in wireless local area network |
US7978652B2 (en) | 2008-01-23 | 2011-07-12 | Microsoft Corporation | Wireless communications environment overlay |
KR101449024B1 (en) * | 2008-03-14 | 2014-10-10 | 엘지전자 주식회사 | Method for transmitting data in DLS Wireless Network and apparatus supporting the method, and frame format for the data transmission method |
CN101557330B (en) * | 2008-04-08 | 2012-08-15 | 华为终端有限公司 | Method, system and terminals supporting power saving mode |
WO2009134066A1 (en) | 2008-05-01 | 2009-11-05 | Lg Electronics Inc. | Direct link setup method in tunneled direct link setup wireless network and station supporting the method |
KR101096076B1 (en) * | 2008-06-26 | 2011-12-19 | 삼성전자주식회사 | Apparatus and method for setting up a ad hoc mode connection using cellular network in a cellular wireless communication systme |
US20100054237A1 (en) * | 2008-09-04 | 2010-03-04 | Motorola, Inc. | Synchronization for femto-cell base stations |
WO2010030136A2 (en) * | 2008-09-11 | 2010-03-18 | Lg Electronics Inc. | Power management in tunneled direct link setup |
KR101511386B1 (en) * | 2008-10-15 | 2015-04-13 | 엘지전자 주식회사 | Direct link setup procedure in Tunneled Direct Link Setup(TDLS) wireless network |
US9900779B2 (en) * | 2008-12-30 | 2018-02-20 | Qualcomm Incorporated | Centralized control of peer-to-peer communication |
US8203985B2 (en) * | 2008-12-31 | 2012-06-19 | Intel Corporation | Power saving in peer-to-peer communication devices |
US9148477B2 (en) * | 2009-01-29 | 2015-09-29 | Qualcomm Incorporated | Methods and apparatus for communicating in a wireless system |
US8885538B2 (en) | 2009-05-08 | 2014-11-11 | Lg Electronics Inc. | Method and apparatus for ascynchronous direct link setup in WLAN system |
WO2010143894A2 (en) * | 2009-06-10 | 2010-12-16 | Lg Electronics Inc. | Method and apparatus for transmitting frame in wireless local area network (wlan) system |
US20130298170A1 (en) * | 2009-06-12 | 2013-11-07 | Cygnus Broadband, Inc. | Video streaming quality of experience recovery using a video quality metric |
US9538220B2 (en) | 2009-06-12 | 2017-01-03 | Wi-Lan Labs, Inc. | Video streaming quality of experience degradation control using a video quality metric |
US8432880B2 (en) * | 2009-07-31 | 2013-04-30 | Motorola Solutions, Inc. | Method for group call communication |
KR101586089B1 (en) | 2009-08-14 | 2016-01-15 | 삼성전자주식회사 | System and method for connecting wireless network using wireless personal area network and device thereof |
WO2011020180A1 (en) | 2009-08-21 | 2011-02-24 | Research In Motion Limited | System and method for mobile network inter-device communications |
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 |
US9900759B2 (en) * | 2009-11-04 | 2018-02-20 | Qualcomm Incorporated | Method and apparatus for peer discovery in a wireless communication network |
US8762543B2 (en) | 2009-12-15 | 2014-06-24 | Intel Corporation | Method and apparatus for autonomous peer discovery and enhancing link reliability for wireless peer direct links |
EP2533468B1 (en) * | 2010-02-05 | 2019-04-10 | Electronics And Telecommunications Research Institute | Communication method among a source device, a destination device and a relay device |
WO2011109941A1 (en) | 2010-03-11 | 2011-09-15 | Nokia Corporation | Method and apparatus for device-to-device communication setup |
US8787284B2 (en) * | 2010-03-15 | 2014-07-22 | Lg Electronics Inc. | Method and apparatus for transmitting frame in WLAN system |
US8903930B2 (en) | 2010-04-07 | 2014-12-02 | Lg Electronics Inc. | Group-based M2M communication method |
WO2011129575A2 (en) * | 2010-04-12 | 2011-10-20 | 엘지전자 주식회사 | Apparatus and method for performing group-based m2m communication |
US8812657B2 (en) * | 2010-04-15 | 2014-08-19 | Qualcomm Incorporated | Network-assisted peer discovery |
US9072082B2 (en) | 2010-07-29 | 2015-06-30 | Qualcomm Incorporated | Systems and methods of communication using tunneled direct link setup (TDLS) |
US10091636B2 (en) | 2010-11-19 | 2018-10-02 | Qualcomm Incorporated | Probe messaging for direct link connections |
US9271136B2 (en) * | 2010-11-19 | 2016-02-23 | Qualcomm Incorporated | Probe messaging for direct link connections |
CN103202068B (en) * | 2010-11-19 | 2016-11-09 | 瑞典爱立信有限公司 | Set up new wireless link to jump |
JP2012119827A (en) * | 2010-11-30 | 2012-06-21 | Ntt Docomo Inc | Mobile communication method, radio base station, and mobile station |
JP5349447B2 (en) * | 2010-12-02 | 2013-11-20 | 株式会社バッファロー | Wireless communication system |
US20120155443A1 (en) * | 2010-12-16 | 2012-06-21 | Carlos Cordeiro | Millimeter-wave communication station and methods for station and information discovery in a millimeter-wave basic service set |
US9161345B2 (en) * | 2011-01-05 | 2015-10-13 | Lg Electronics Inc. | Method and device for performing terminal-to-terminal cooperative communication in wireless access system |
US8812008B2 (en) | 2011-03-28 | 2014-08-19 | Qualcomm Incorporated | Methods and apparatus for assigning resources to schedule peer-to-peer communications in WWAN |
JP5484396B2 (en) | 2011-05-18 | 2014-05-07 | 株式会社Nttドコモ | Mobile communication method and radio base station |
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 |
US9144056B2 (en) * | 2011-09-09 | 2015-09-22 | Qualcomm Incorporated | Broadcast teardown apparatus and method |
US9167614B2 (en) * | 2011-09-28 | 2015-10-20 | Marvell International Ltd. | Tunneled direct link setup systems and methods with consistent link information maintenance |
CN103096502B (en) * | 2011-11-03 | 2016-03-09 | 华为技术有限公司 | Apparatus for establishing is to the methods, devices and systems of equipment connection |
JP5855280B2 (en) | 2011-12-29 | 2016-02-09 | テレフオンアクチーボラゲット エル エム エリクソン(パブル) | User apparatus, radio network node, and method thereof |
KR20130110985A (en) * | 2012-03-30 | 2013-10-10 | 한국전자통신연구원 | Apparatus and method for allocating resource for avoidance interference of wireless communication system |
EP2665325B1 (en) * | 2012-05-15 | 2014-08-13 | Telefonaktiebolaget L M Ericsson (publ) | Radio link management for network assisted device-to-device communication |
JP6041257B2 (en) * | 2012-06-20 | 2016-12-07 | 国立研究開発法人情報通信研究機構 | Direct data transmission / reception method between devices via an IEEE 802.15.4 network |
US9204479B2 (en) * | 2012-09-11 | 2015-12-01 | Electronics And Telecommunications Research Institute | Method of transmitting and receiving data in talk-around direct communication network |
KR102049047B1 (en) * | 2012-09-11 | 2020-01-08 | 한국전자통신연구원 | Method of data transmitting and receiving in the talk-around direct communication network |
WO2014084519A1 (en) * | 2012-11-29 | 2014-06-05 | 엘지전자 주식회사 | Method for setting communication in wi-fi direct service system, and apparatus therefor |
FR2999045B1 (en) * | 2012-12-03 | 2016-01-15 | Cassidian | DIRECT MODE COMMUNICATION IN A BROADBAND RADIO COMMUNICATION SYSTEM |
US9241365B2 (en) | 2012-12-05 | 2016-01-19 | Htc Corporation | Method of handling device to device communication and related communication device |
US9955510B2 (en) * | 2013-07-08 | 2018-04-24 | Electronics And Telecommunications Research Institute | Method and terminal for distributed access |
JP6471690B2 (en) * | 2013-07-18 | 2019-02-20 | ソニー株式会社 | Control device and communication terminal |
WO2015068966A1 (en) * | 2013-11-06 | 2015-05-14 | 엘지전자 주식회사 | D2d communication method and device on basis of hopping sequence |
US9277573B2 (en) | 2013-11-21 | 2016-03-01 | At&T Intellectual Property I, L.P. | Method and apparatus for establishing an ad hoc communication with an unknown contact |
KR20150060128A (en) | 2013-11-26 | 2015-06-03 | 삼성전자주식회사 | Method, storage medium and apparatus for peer to peer service using contact information |
US10172169B2 (en) * | 2014-09-14 | 2019-01-01 | Lg Electronics Inc. | Method and device for controlling device by using bluetooth technology |
WO2016167539A1 (en) * | 2015-04-13 | 2016-10-20 | 엘지전자(주) | Method for performing scanning in wireless communication system, and apparatus therefor |
CN111278165B (en) * | 2019-01-11 | 2022-01-28 | 维沃移动通信有限公司 | Connection establishing method, terminal equipment and network equipment |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030171116A1 (en) * | 2002-03-07 | 2003-09-11 | Koninklijke Philips Electronics, N.V. | Fast channel switching scheme for IEEE 802.11 WLANs |
US20030204616A1 (en) * | 2002-04-29 | 2003-10-30 | Harris Corporation | Admission control in a mobile ad hoc network |
US20030227567A1 (en) * | 2000-05-03 | 2003-12-11 | Bruce Plotnick | System and method to control distribute processing and memory resources among applications in a television terminal |
US20040092231A1 (en) * | 2001-01-11 | 2004-05-13 | Yuji Ayatsuka | Communication system and method, information processing terminal and method, and information processing apparatus and method |
US20040218683A1 (en) * | 2003-05-01 | 2004-11-04 | Texas Instruments Incorporated | Multi-mode wireless devices having reduced-mode receivers |
US20050058109A1 (en) * | 2003-09-16 | 2005-03-17 | Jan-Erik Ekberg | Mechanism for improving connection control in peer-to-peer ad-hoc networks |
US20050075094A1 (en) * | 2001-12-14 | 2005-04-07 | Kundetkar Nandan Vinayakrao | Messaging system |
US20050160181A1 (en) * | 2004-01-15 | 2005-07-21 | Samsung Electronics Co., Ltd. | Method of communications between MIMO stations |
US8159999B2 (en) * | 2005-01-25 | 2012-04-17 | Interdigital Technology Corporation | Peer-to-peer wireless communication system |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI94993C (en) * | 1993-11-30 | 1995-11-27 | Nokia Telecommunciations Oy | Procedure for controlling a radio unit |
KR100192208B1 (en) | 1996-09-05 | 1999-06-15 | 서평원 | Communication method in wireless lan |
JP4608784B2 (en) * | 2001-02-05 | 2011-01-12 | パナソニック株式会社 | Wireless device and wireless communication method performed by wireless device |
KR100790131B1 (en) * | 2001-08-24 | 2008-01-02 | 삼성전자주식회사 | Signalling method between mac entities in a packet communication system |
KR20010088742A (en) * | 2001-08-28 | 2001-09-28 | 문의선 | Parallel Information Delievery Method Based on Peer-to-Peer Enabled Distributed Computing Technology |
RU2207724C1 (en) | 2001-11-01 | 2003-06-27 | Общество с ограниченной ответственностью "Алгоритм" | Method of radio communication in wireless local network |
RU2221335C2 (en) * | 2001-11-01 | 2004-01-10 | Общество с ограниченной ответственностью "Алгоритм" | Method for data transmission in wireless local-area network |
EP1326386A1 (en) * | 2002-01-08 | 2003-07-09 | Canon Kabushiki Kaisha | Method and device for communication in a network |
US6982987B2 (en) | 2002-01-10 | 2006-01-03 | Harris Corporation | Wireless communication network including data prioritization and packet reception error determination features and related methods |
ES2236370T3 (en) | 2002-01-23 | 2005-07-16 | Sony International (Europe) Gmbh | METHOD TO ALLOW THE NEGOTIATION OF EXTREME EXTREME SERVICE QUALITY BY USING THE EXTREME EXTREME NEGOTIATION PROTOCOL (E2ENP). |
US6791962B2 (en) * | 2002-06-12 | 2004-09-14 | Globespan Virata, Inc. | Direct link protocol in wireless local area networks |
US20040156318A1 (en) * | 2002-12-23 | 2004-08-12 | Johan Rune | Bridging between a Bluetooth scatternet and an Ethernet LAN |
GB2396775B (en) * | 2002-12-23 | 2005-04-13 | Motorola Inc | Method and apparatus for establishing direct communication for mobiles in a radio communication system |
US6921230B2 (en) * | 2002-12-24 | 2005-07-26 | Diamond Products, Limited | Closed loop control system for pavement surfacing machine |
KR20040076979A (en) * | 2003-02-27 | 2004-09-04 | 삼성전자주식회사 | Wireless LAN and method for setting direct link protocol between wireless LAN stations |
JP4039277B2 (en) * | 2003-03-06 | 2008-01-30 | ソニー株式会社 | RADIO COMMUNICATION SYSTEM, TERMINAL, PROCESSING METHOD IN THE TERMINAL, AND PROGRAM FOR CAUSING TERMINAL TO EXECUTE THE METHOD |
CN1527621A (en) * | 2003-03-07 | 2004-09-08 | 皇家飞利浦电子股份有限公司 | Method and apparatus for establishing point-to-point coordinate communication in radio communication network |
US7414969B2 (en) * | 2003-10-15 | 2008-08-19 | Sharp Laboratories Of America, Inc. | System and method for IEEE 802.11 network admission control |
US20050111419A1 (en) * | 2003-11-20 | 2005-05-26 | Samsung Electronics Co., Ltd. | Method of performing communication over wireless network including multiple input/multiple output stations |
WO2006020520A2 (en) * | 2004-08-12 | 2006-02-23 | Interdigital Technology Corporation | Method and system for controlling access to a wireless communication medium |
JP4310253B2 (en) | 2004-09-21 | 2009-08-05 | キヤノン株式会社 | Communication apparatus and communication method |
-
2005
- 2005-09-23 US US11/234,792 patent/US8159999B2/en active Active
-
2006
- 2006-01-18 TW TW101132420A patent/TW201304569A/en unknown
- 2006-01-18 TW TW095101975A patent/TWI390998B/en not_active IP Right Cessation
- 2006-01-18 TW TW098103426A patent/TWI403196B/en not_active IP Right Cessation
- 2006-01-19 SG SG201000500-7A patent/SG158914A1/en unknown
- 2006-01-19 MX MX2007008893A patent/MX2007008893A/en active IP Right Grant
- 2006-01-19 EP EP06718848A patent/EP1842383A4/en not_active Withdrawn
- 2006-01-19 GE GEAP200610193A patent/GEP20125509B/en unknown
- 2006-01-19 WO PCT/US2006/001840 patent/WO2006081123A2/en active Search and Examination
- 2006-01-19 AU AU2006208271A patent/AU2006208271B2/en not_active Ceased
- 2006-01-19 BR BRPI0606246-6A patent/BRPI0606246A2/en not_active IP Right Cessation
- 2006-01-19 CA CA002595648A patent/CA2595648A1/en not_active Abandoned
- 2006-01-19 JP JP2007552252A patent/JP5006212B2/en not_active Expired - Fee Related
- 2006-01-20 TW TW095201345U patent/TWM303565U/en not_active IP Right Cessation
- 2006-01-20 MY MYPI20060262A patent/MY141320A/en unknown
- 2006-01-24 AR ARP060100246A patent/AR052092A1/en not_active Application Discontinuation
- 2006-01-24 DE DE202006001027U patent/DE202006001027U1/en not_active Expired - Lifetime
- 2006-01-25 KR KR1020060007975A patent/KR101278563B1/en active IP Right Grant
-
2007
- 2007-07-02 IL IL184346A patent/IL184346A/en active IP Right Grant
- 2007-08-24 NO NO20074335A patent/NO20074335L/en not_active Application Discontinuation
-
2009
- 2009-12-28 AR ARP090105125A patent/AR074914A2/en not_active Application Discontinuation
-
2010
- 2010-02-19 AU AU2010200615A patent/AU2010200615B2/en not_active Ceased
-
2011
- 2011-02-21 KR KR1020110015216A patent/KR101374451B1/en not_active IP Right Cessation
- 2011-06-16 JP JP2011134217A patent/JP5681046B2/en not_active Expired - Fee Related
-
2012
- 2012-04-12 US US13/444,950 patent/US8559375B2/en not_active Expired - Fee Related
- 2012-11-27 KR KR1020120135172A patent/KR101396060B1/en not_active IP Right Cessation
-
2013
- 2013-03-18 JP JP2013054933A patent/JP2013132076A/en active Pending
- 2013-05-15 KR KR1020130054993A patent/KR20130074777A/en active IP Right Grant
- 2013-07-05 JP JP2013142034A patent/JP5709942B2/en not_active Expired - Fee Related
- 2013-10-11 US US14/051,662 patent/US20140044115A1/en not_active Abandoned
- 2013-10-25 KR KR1020130127816A patent/KR20130127403A/en not_active Application Discontinuation
-
2014
- 2014-03-13 KR KR1020140029533A patent/KR20140041658A/en not_active Application Discontinuation
- 2014-07-31 JP JP2014156286A patent/JP2014200117A/en not_active Withdrawn
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030227567A1 (en) * | 2000-05-03 | 2003-12-11 | Bruce Plotnick | System and method to control distribute processing and memory resources among applications in a television terminal |
US20040092231A1 (en) * | 2001-01-11 | 2004-05-13 | Yuji Ayatsuka | Communication system and method, information processing terminal and method, and information processing apparatus and method |
US20050075094A1 (en) * | 2001-12-14 | 2005-04-07 | Kundetkar Nandan Vinayakrao | Messaging system |
US20030171116A1 (en) * | 2002-03-07 | 2003-09-11 | Koninklijke Philips Electronics, N.V. | Fast channel switching scheme for IEEE 802.11 WLANs |
US20030204616A1 (en) * | 2002-04-29 | 2003-10-30 | Harris Corporation | Admission control in a mobile ad hoc network |
US20040218683A1 (en) * | 2003-05-01 | 2004-11-04 | Texas Instruments Incorporated | Multi-mode wireless devices having reduced-mode receivers |
US20050058109A1 (en) * | 2003-09-16 | 2005-03-17 | Jan-Erik Ekberg | Mechanism for improving connection control in peer-to-peer ad-hoc networks |
US20050160181A1 (en) * | 2004-01-15 | 2005-07-21 | Samsung Electronics Co., Ltd. | Method of communications between MIMO stations |
US8159999B2 (en) * | 2005-01-25 | 2012-04-17 | Interdigital Technology Corporation | Peer-to-peer wireless communication system |
US8559375B2 (en) * | 2005-01-25 | 2013-10-15 | Interdigital Technology Corporation | Peer-to-peer wireless communication system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10264613B2 (en) | 2014-06-23 | 2019-04-16 | Fujitsu Connected Technologies Limited | Wireless communication system, wireless device, method of communications by wireless device, wireless base station, and method of communications by wireless base station |
US10129920B2 (en) | 2014-11-10 | 2018-11-13 | Nec Corporation | Control apparatus, radio communication device, and method therefor |
CN110113822A (en) * | 2019-05-15 | 2019-08-09 | 武汉大学 | The heterogeneous network converged cut-in method for the wireless communication that faces the future |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8559375B2 (en) | Peer-to-peer wireless communication system | |
US11653286B2 (en) | Methods of mobile device based relay for coverage extension | |
CN2914501Y (en) | Radio communication system | |
KR20140037177A (en) | Implementing a smart antenna in a wireless local area network | |
US20220361076A1 (en) | Relay Selection and Reselection | |
KR20140041740A (en) | Communication method in wlan sysem | |
KR200413131Y1 (en) | Peer-to-peer wireless communication systeam | |
AU2012261707B2 (en) | Peer-to-peer wireless communication system | |
AU2014253536A1 (en) | Peer-to-peer wireless communication system | |
US20240064808A1 (en) | Method and apparatus for assisting wireless communication device with switch back operation for early switching back to listening operation on enhanced multi-link single radio links | |
KR20100032987A (en) | Data direct transmission apparatus in the wireless lan and method thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |