US20110103240A1 - Method for forwarding in peer-to-peer wireless communications - Google Patents

Method for forwarding in peer-to-peer wireless communications Download PDF

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Publication number
US20110103240A1
US20110103240A1 US12/619,170 US61917009A US2011103240A1 US 20110103240 A1 US20110103240 A1 US 20110103240A1 US 61917009 A US61917009 A US 61917009A US 2011103240 A1 US2011103240 A1 US 2011103240A1
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United States
Prior art keywords
data
destination
forwarding
source
send
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Abandoned
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US12/619,170
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English (en)
Inventor
Mohammad Hossein Taghavi Nasrabadi
Hemanth Sampath
Santosh P. Abraham
Avinash Jain
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Qualcomm Inc
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Qualcomm Inc
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Priority to US12/619,170 priority Critical patent/US20110103240A1/en
Assigned to QUALCOMM INCORPORATED reassignment QUALCOMM INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JAIN, AVINASH, ABRAHAM, SANTOSH P., SAMPATH, HEMANTH, TAGHAVI NASRABADI, MOHAMMAD HOSSEIN
Priority to TW099137359A priority patent/TW201138530A/zh
Priority to KR1020127013917A priority patent/KR20120093314A/ko
Priority to PCT/US2010/054732 priority patent/WO2011059818A1/en
Priority to CN201080048792.XA priority patent/CN102598844B/zh
Priority to JP2012537120A priority patent/JP5524342B2/ja
Priority to EP10779125.3A priority patent/EP2494845B1/en
Priority to KR1020147023139A priority patent/KR20140108599A/ko
Publication of US20110103240A1 publication Critical patent/US20110103240A1/en
Priority to US14/295,185 priority patent/US10412746B2/en
Abandoned legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • 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
    • H04L67/1044—Group management mechanisms 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • 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]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations

Definitions

  • Certain aspects of the present disclosure generally relate to a wireless communication and, more particularly, to forwarding of data in peer-to-peer transactions by a high-capability wireless device.
  • Handheld/mobile wireless devices often have limited capabilities compared to access points or other high-end devices, e.g., in terms of transmission power and beamforming capability. Furthermore, even if two wireless devices have high capabilities, the network geometry may be such that the path loss and/or shadowing in a link between them are very strong.
  • these peer stations may not have enough resources to form a strong link for high-speed communication. This can be exacerbated in high-frequency links where severe path loss necessitates the use of directional communication.
  • Certain aspects provide a method for wireless communications by a source apparatus.
  • the method generally includes exchanging messages with an apparatus capable of forwarding data to a destination apparatus, determining, based on the exchange of messages, whether to send data to the destination apparatus via the forwarding apparatus or to send the data directly to the destination apparatus, and transmitting data to the destination apparatus based on the determination.
  • the apparatus generally includes a transceiver configured to exchange messages with an apparatus capable of forwarding data to a destination apparatus, and a processor configured to determine, based on the exchange of messages, whether to send data to the destination apparatus via the forwarding apparatus or to send the data directly to the destination apparatus, wherein the transceiver is also configured to transmit data to the destination apparatus based on the determination.
  • the apparatus generally includes means for exchanging messages with an apparatus capable of forwarding data to a destination apparatus, means for determining, based on the exchange of messages, whether to send data to the destination apparatus via the forwarding apparatus or to send the data directly to the destination apparatus, and means for transmitting data to the destination apparatus based on the determination.
  • the computer-program product includes a computer-readable medium comprising instructions executable to exchange messages with an apparatus capable of forwarding data to a destination apparatus, determine, based on the exchange of messages, whether to send data to the destination apparatus via the forwarding apparatus or to send the data directly to the destination apparatus, and transmit data to the destination apparatus based on the determination.
  • the wireless node generally includes at least one antenna, a transceiver configured to exchange messages via the at least one antenna with another wireless node capable of forwarding data to a destination wireless node, and a processor configured to determine, based on the exchange of messages, whether to send data to the destination wireless node via the forwarding wireless node or to send the data directly to the destination wireless node, wherein the transceiver is also configured to transmit data via the at least one antenna to the destination apparatus based on the determination.
  • Certain aspects provide a method for wireless communications by a forwarding apparatus.
  • the method generally includes receiving, from a source apparatus, a request message to send data to a destination apparatus, in response to the request message, determining whether it is preferable to send the data from the source apparatus directly to the destination apparatus or to send the data from the source apparatus to the destination apparatus via the forwarding apparatus, and transmitting a confirmation message to the source apparatus and to the destination apparatus, said confirmation message indicating that it is preferable to send the data to the destination apparatus via the forwarding apparatus.
  • the apparatus generally includes a receiver configured to receive, from a source apparatus, a request message to send data to a destination apparatus, a processor configured to determine, in response to the request message, whether it is preferable to send the data from the source apparatus directly to the destination apparatus or to send the data from the source apparatus to the destination apparatus via the apparatus, and a transmitter configured to transmit a confirmation message to the source apparatus and to the destination apparatus, said confirmation message indicating that it is preferable to send the data to the destination apparatus via the apparatus.
  • the apparatus generally includes means for receiving, from a source apparatus, a request message to send data to a destination apparatus, means for determining, in response to the request message, whether it is preferable to send the data from the source apparatus directly to the destination apparatus or to send the data from the source apparatus to the destination apparatus via the apparatus, and means for transmitting a confirmation message to the source apparatus and to the destination apparatus, said confirmation message indicating that it is preferable to send the data to the destination apparatus via the apparatus.
  • the computer-program product includes a computer-readable medium comprising instructions executable to receive, from a source apparatus, a request message to send data to a destination apparatus, in response to the request message, determine whether it is preferable to send the data from the source apparatus directly to the destination apparatus or to send the data from the source apparatus to the destination apparatus via the forwarding apparatus, and transmit a confirmation message to the source apparatus and to the destination apparatus, said confirmation message indicating that it is preferable to send the data to the destination apparatus via the forwarding apparatus.
  • the wireless node generally includes at least one antenna, a receiver configured to receive, from a source wireless node via the at least one antenna, a request message to send data to a destination wireless node, a processor configured to determine, in response to the request message, whether it is preferable to send the data from the source wireless node directly to the destination wireless node or to send the data from the source wireless node to the destination wireless node via the wireless node, and a transmitter configured to transmit via the at least one antenna a confirmation message to the source wireless node and to the destination wireless node, said confirmation message indicating that it is preferable to send the data to the destination wireless node via the wireless node.
  • FIG. 1 illustrates an example wireless communication system in accordance with certain aspects of the present disclosure.
  • FIG. 2 illustrates a system that allows two nodes to communicate in accordance with certain aspects of the present disclosure.
  • FIG. 3 illustrates an example of a communication device in accordance with certain aspects of the present disclosure.
  • FIG. 4 illustrates an example wireless network with wide beam patterns at mobile stations (STAs) and antenna arrays with fine beam patterns at an access point (AP) in accordance with certain aspects of the present disclosure.
  • FIG. 5 illustrates example operations executed at a STA which may transmit data to the AP to be forwarded to another STA in accordance with certain aspects of the present disclosure.
  • FIG. 5A illustrates example components capable of performing the operations illustrated in FIG. 5 .
  • FIG. 6 illustrates example operations executed at the AP which may forward the data received from the STA to the other STA in accordance with certain aspects of the present disclosure.
  • FIG. 6A illustrates example components capable of performing the operations illustrated in FIG. 6 .
  • the techniques described herein may be used for various broadband wireless communication systems, including communication systems that are based on an orthogonal multiplexing scheme.
  • Examples of such communication systems include Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single-Carrier Frequency Division Multiple Access (SC-FDMA) systems, and so forth.
  • OFDMA orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-Carrier Frequency Division Multiple Access
  • An OFDMA system utilizes orthogonal frequency division multiplexing (OFDM), which is a modulation technique that partitions the overall system bandwidth into multiple orthogonal sub-carriers. These sub-carriers may also be called tones, bins, etc. With OFDM, each sub-carrier may be independently modulated with data.
  • OFDM orthogonal frequency division multiplexing
  • An SC-FDMA system may utilize interleaved FDMA (IFDMA) to transmit on sub-carriers that are distributed across the system bandwidth, localized FDMA (LFDMA) to transmit on a block of adjacent sub-carriers, or enhanced FDMA (EFDMA) to transmit on multiple blocks of adjacent sub-carriers.
  • IFDMA interleaved FDMA
  • LFDMA localized FDMA
  • EFDMA enhanced FDMA
  • modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDMA.
  • WiMAX which stands for the Worldwide Interoperability for Microwave Access
  • WiMAX is a standards-based broadband wireless technology that provides high-throughput broadband connections over long distances.
  • Fixed WiMAX applications are point-to-multipoint, enabling broadband access to homes and businesses, for example.
  • Mobile WiMAX offers the full mobility of cellular networks at broadband speeds.
  • IEEE 802.16x is an emerging standard organization to define an air interface for fixed and mobile broadband wireless access (BWA) systems. IEEE 802.16x approved “IEEE P802.16d/D5-2004” in May 2004 for fixed BWA systems and published “IEEE P802.16e/D12 October 2005” in October 2005 for mobile BWA systems. The latest revision of the IEEE 802.16, “IEEE P802.16Rev2/D8 December 2008,” a draft standard, now consolidates materials from IEEE 802.16e and corrigendum. The standards define four different physical layers (PHYs) and one medium access control (MAC) layer. The OFDM and OFDMA physical layer of the four physical layers are the most popular in the fixed and mobile BWA areas respectively.
  • PHYs physical layers
  • MAC medium access control
  • a node implemented in accordance with the teachings herein may comprise an access point or an access terminal.
  • An access point may comprise, be implemented as, or known as NodeB, Radio Network Controller (“RNC”), eNodeB, Base Station Controller (“BSC”), Base Transceiver Station (“BTS”), Base Station (“BS”), Transceiver Function (“TF”), Radio Router, Radio Transceiver, Basic Service Set (“BSS”), Extended Service Set (“ESS”), Radio Base Station (“RBS”), or some other terminology.
  • RNC Radio Network Controller
  • BSC Base Station Controller
  • BTS Base Station
  • BS Base Station
  • Transceiver Function TF
  • Radio Router Radio Transceiver
  • BSS Basic Service Set
  • ESS Extended Service Set
  • RBS Radio Base Station
  • An access terminal may comprise, be implemented as, or known as an access terminal, a subscriber station, a subscriber unit, a mobile station, a remote station, a remote terminal, a user terminal, a user agent, a user device, user equipment, or some other terminology.
  • an access terminal may comprise a cellular telephone, a cordless telephone, a Session Initiation Protocol (“SIP”) phone, a wireless local loop (“WLL”) station, a personal digital assistant (“PDA”), a handheld device having wireless connection capability, or some other suitable processing device connected to a wireless modem.
  • SIP Session Initiation Protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • a phone e.g., a cellular phone or smart phone
  • a computer e.g., a laptop
  • a portable communication device e.g., a portable computing device (e.g., a personal data assistant), an entertainment device (e.g., a music or video device, or a satellite radio), a global positioning system device, a headset, a sensor or any other suitable device that is configured to communicate via a wireless or wired medium.
  • the node is a wireless node.
  • Such wireless node may provide, for example, connectivity for or to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link.
  • System 100 comprises a base station (i.e., an access point) 102 that can include multiple antenna groups.
  • a base station i.e., an access point
  • one antenna group can include antennas 104 and 106
  • another group can comprise antennas 108 and 110
  • an additional group can include antennas 112 and 114 .
  • Two antennas are illustrated for each antenna group; however, more or fewer antennas can be utilized for each group.
  • the base station 102 can additionally include a transmitter chain and a receiver chain, each of which can in turn comprise a plurality of components associated with signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, antennas, and so forth), as will be appreciated by one skilled in the art. Additionally, the base station 102 can be a home base station, a Femto base station, and/or the like.
  • a transmitter chain and a receiver chain each of which can in turn comprise a plurality of components associated with signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, antennas, and so forth), as will be appreciated by one skilled in the art.
  • the base station 102 can be a home base station, a Femto base station, and/or the like.
  • the base station 102 can communicate with one or more devices such as device 116 ; however, it is to be appreciated that base station 102 can communicate with substantially any number of devices similar to device 116 .
  • device 116 is in communication with antennas 104 and 106 , where antennas 104 and 106 transmit information to device 116 over a forward link 118 and receive information from device 116 over a reverse link 120 .
  • FDD frequency division duplex
  • forward link 118 can utilize a different frequency band than that used by reverse link 120 , for example.
  • TDD time division duplex
  • forward link 118 and reverse link 120 can utilize a common frequency band.
  • devices 122 and 124 can be communicating with one another, such as in a peer-to-peer configuration. Moreover, device 122 is in communication with device 124 using links 126 and 128 .
  • devices within range of each other such as devices 122 and 124 , communicate directly with each other without a base station 102 and/or a wired infrastructure to relay their communication.
  • peer devices or nodes can relay traffic.
  • the devices within the network communicating in a peer-to-peer manner can function similar to base stations and relay traffic or communications to other devices, functioning similar to base stations, until the traffic reaches its ultimate destination.
  • the devices can also transmit control channels, which carry information that can be utilized to manage the data transmission between peer nodes.
  • a communication network can include any number of devices or nodes that are in wireless (or wired) communication. Each node can be within range of one or more other nodes and can communicate with the other nodes or through utilization of the other nodes, such as in a multi-hop topography (e.g., communications can hop from node to node until reaching a final destination). For example, a sender node may wish to communicate with a receiver node. To enable packet transfer between sender node and receiver node, one or more intermediate nodes can be utilized.
  • any node can be a sender node and/or a receiver node and can perform functions of either sending and/or receiving information at substantially the same time (e.g., can broadcast or communicate information at about the same time as receiving information) or at different times.
  • System 100 can be configured to allow nodes that have initiated a communication session over a network to move the session to a direct connection.
  • Nodes that are directly connected can exchange packets natively without any encapsulation.
  • a “homeless” node can switch to a wireless network without losing its ongoing sessions.
  • homeless it is meant a node that does not have any home agent entity to provide assistance for keeping ongoing sessions alive while switching to foreign networks nor to forward any new incoming request(s) to establish new sessions to the node's current location.
  • nodes can be mobile (e.g., wireless), static (e.g., wired), or combinations thereof (e.g., one node static and a second node mobile, both nodes mobile, and so forth).
  • FIG. 2 illustrates a system 200 that allows two nodes to communicate over a Wide Area Network interface and/or a Device to Device interface, according to various aspects.
  • a first node (Node 1 ) 202 and a second node (Node 2 ) 204 Each node 202 , 204 includes at least two interfaces.
  • a first interface can be connected to a network 206 that provides Internet Protocol (IP) addresses.
  • IP Internet Protocol
  • the network can be a Wide Area Network (WAN), a Local Area Network (LAN), a home network, Digital Subscriber Line (DSL), cable, 3GPP based, 3GPP2 based, or any other technology providing interconnectivity and routing to a network of interest (e.g., the Internet).
  • IP Internet Protocol
  • the network can be a Wide Area Network (WAN), a Local Area Network (LAN), a home network, Digital Subscriber Line (DSL), cable, 3GPP based, 3GPP2 based, or any other technology providing interconnectivity and routing to a
  • Interfaces of nodes 202 and 204 can be wired (e.g., Device to Device), wireless (e.g., WAN), or combinations thereof.
  • Node 1 interface can be wireless and Node 2 interface can be wired, or Node 2 interface can be wireless and Node 1 interface can be wired, both interfaces can be wireless, or both interfaces can be wired.
  • each node 202 , 204 includes at least a second interface that is connected to a local network with directly connected peers or a multi-hop mesh network.
  • the local network can be a Wireless Local Area Network (WLAN) or another device to device (e.g., peer to peer) technology.
  • the second interface of each node 202 , 204 is illustrated as a Device to Device (D2D) interface 216 , 218 .
  • the D2D interfaces 216 , 218 allow nodes 202 , 204 to perform direct communications, illustrated by direct link 220 .
  • D2D Device to Device
  • Node 1 202 utilizes Mobile Internet Protocol. Communications are performed by Node 1 202 utilizing its Mobile IP home address as a source address. A home address is a unicast routable address assigned to a node and is used as the permanent address of the node.
  • Node 1 202 communicates with Node 2 204 over network 206 (e.g., WAN) by sending and receiving packets over respective first interfaces (e.g., WAN interfaces 208 , 210 ).
  • the packets can be encapsulated in a MIPv6 tunnel to a home agent, which can be included in network 206 according to various aspects, or a route optimization tunnel directly to Node 2 204 .
  • FIG. 3 illustrates an exemplary first communications device 300 , in accordance with an exemplary aspect.
  • Exemplary first communications device 300 is, e.g., one of the wireless communications devices ( 102 , 116 , 122 , 124 ) of FIG. 1 or one of the wireless communications devices ( 202 , 204 ) of FIG. 2 .
  • First communications device 300 includes a processor 302 and memory 304 coupled together via a bus 309 over which the various elements ( 302 , 304 ) may interchange data and information.
  • Communications device 300 further includes an input module 306 and an output module 308 which may be coupled to processor 302 as shown. However, in some aspects, the input module 306 and output module 308 are located internal to the processor 302 .
  • Input module 306 can receive input signals. Input module 306 can, and in some aspects does, include a wireless receiver and/or a wired or optical input interface for receiving input.
  • Output module 308 may include, and in some aspects does include, a wireless transmitter and/or a wired or optical output interface for transmitting output.
  • Processor 302 is configured to: receive a first signal from a second communications device; generate a first application alert if said first signal satisfies an application alert criteria; and receive a second signal from an access point said second signal carrying second communications device information based on a previous signal from the second communications device.
  • the access point may be, and sometimes is, a base station.
  • the second communications device information is location information.
  • processor 302 is configured to receive said first signal via a wireless peer to peer interface as part of being configured to receive a first signal.
  • processor 302 is configured to receive the second signal via a wireless wide area network interface as part of being configured to receive the second signal.
  • Processor 302 is further configured to determine an operation to take based on the second communications device information included in the second signal and information included in said first signal.
  • said second communications device information included in the second signal is information on a previous location of said second communications device
  • said information included in the first signal is current location information
  • said operation is one of a location based traffic update operation and a location based advertisement update operation.
  • Processor 302 in some aspects, is further configured to send an information request signal to the access point requesting information corresponding to the second communications device, in response to the generated first application alert.
  • Certain aspects of the present disclosure support the mechanism for an access point (AP), such as the AP 102 from FIG. 1 , or another high-capability wireless device to forward traffic from one device (i.e., peer) to another, such as from the device 122 to the device 124 . Criteria are also proposed in the present disclosure to decide when forwarding via the AP is advantageous over direct peer-to-peer communication.
  • AP access point
  • peer another high-capability wireless device
  • the received power (and hence the received signal-to-noise ratio (SNR)) may be proportional to the product of antenna gains at a transmitter and a receiver, G TX and G RX , respectively.
  • P TX in equation (1) denotes a transmission power
  • d is a distance between the transmitter and receiver
  • c is a speed of a transmission signal
  • f c is a carrier frequency.
  • APs may use large arrays of antennas.
  • Such APs may obtain very large antenna gains when using beamforming to steer a narrow beam towards a user station (STA).
  • STA user station
  • cost, space and power limitations may prevent handheld and/or portable STAs from having many antenna elements, or using complicated beamforming algorithms.
  • a relatively small antenna gain of the STA in equation (1) may be compensated by a high antenna gain of the AP.
  • the resulting weak link budget may severely limit the throughput of the STA-to-STA link.
  • each of the two STAs may be more likely to have a line of sight (LOS) path to the AP, since APs may be mounted on higher points such as the ceiling, while the direct path between the two STAs may be obstructed by an obstacle, such as a wall or smaller objects.
  • LOS line of sight
  • two STAs may be located at two far ends of a wireless network, such that the path loss between them may be too strong to perform high-throughput communication.
  • a third STA possible the AP, may be positioned such that the path loss from each of the two stations to the third station may be much smaller than the path loss between the two STAs.
  • An example of such a situation is a home network in a house, where the set-up box and the TV may be placed in the two far ends of the house, but there may be an AP midway between them.
  • the link between two STAs may have a significantly lower capacity than that between the AP/third STA and each of the two STAs.
  • FIG. 4 illustrates an example wireless network with wide beam patterns at mobile stations and antenna arrays with fine beam patterns at an access point (AP) in accordance with certain aspects of the present disclosure.
  • a station (STA) 402 may intend to transmit data to another STA 404 .
  • the signal-to-noise ratio (SNR) observed at a direct link 408 from the STA 402 to the STA 404 can be denoted by SNR 0
  • the SNRs observed at a link 410 from the STA 402 to the AP 406 and at a link 412 from the AP 406 to the STA 404 can be denoted respectively by SNR 1 and SNR 2, defined per complex dimension.
  • SNR 1 and SNR 2 defined per complex dimension
  • SNR 0 may be too low to support a high throughput transmission from the STA 402 to the STA 404
  • SNR 1 and SNR 2 may be both much higher than SNR 0
  • the traffic may tolerate the additional latency of communicating through the AP 406 .
  • the STA 402 may transmit data to the AP 406 instead of sending them directly to the STA 404 , and then the AP 406 may forward the data to the STA 404 .
  • the AP 406 and/or the STA 402 may be aware of the values of SNR 0 , SNR 1 , and SNR 2 .
  • the channels may be relatively stationary, such that the SNRs do not vary significantly during the intended communication.
  • AWGN Additive White Gaussian Noise
  • successful transmission of a data packet from the STA 402 to the AP 406 may need to be completed before it is forwarded from the AP 406 to the STA 404 .
  • the transmitted data packets may be long, so that the channel time used for the transmission may be proportional to the packet length, rather than being dominated by the overheads, processing times and signal travel time between the transmitter and the receiver.
  • the channel time used for transmitting a data packet through a channel with capacity C i may be approximated as:
  • T D a total channel time used by direct transmission T D may be compared versus a channel time used for forwarding T FW .
  • T D and T FW may be estimated as:
  • T D ⁇ log ⁇ ( 1 + SNR 0 )
  • T FW ⁇ log ⁇ ( 1 + SNR 1 ) + ⁇ log ⁇ ( 1 + SNR 2 ) .
  • the minimum SNR value required for successful transmission of the data packet using the most reliable MCS among the defined MCSs may need to be considered. This particular SNR value can be denoted by SNR min .
  • the AP may first obtain SNR values SNR 0 , SNR 1 , and SNR 2 of the links 408 , 410 , and 412 , respectively. If SNR 0 ⁇ SNR min , but SNR 1 >SNR min and SNR 2 >SNR min , then the AP forwarding may be chosen. If SNR 0 >SNR min , but either SNR 1 ⁇ SNR min or SNR 2 ⁇ SNR min , then the direct transmission from the STA 402 to the STA 404 may be selected. If SNR 0 ⁇ SNR min , SNR 1 ⁇ SNR min , and SNR 2 ⁇ SNR min , then reliable transmission may not be possible using either scheme. If:
  • the direct communication may be chosen. Otherwise, the AP forwarding may be selected.
  • AP forwarding capability may be announced periodically by an AP using an information element (IE) within a beacon or within other control messages.
  • Forwarding capable STA may announce the forwarding capability in its association messages.
  • the decision for considering the AP forwarding as an option may be taken by the higher layer sections of the source STA (e.g., the STA 402 from FIG. 4 ) or the AP, based on the link quality, traffic type and other considerations.
  • the forwarding process may be mostly transparent to the Physical layer (PHY) and Media Access Control (MAC) layer of a destination STA (e.g., the STA 404 from FIG. 4 ).
  • the STA 404 may perform its reception and acknowledgement as though it is communicating only with the AP.
  • the STA 402 or the AP 406 may send a forwarding request message to the AP 406 .
  • the STA 402 may transmit the forwarding request message using its preferred antenna pattern. This request may also contain various traffic parameters.
  • the STA 402 may send the forwarding request to both the AP 406 and the STA 404 by using its omni beam.
  • the AP 406 may acknowledge the receipt and acceptance of the forwarding request by sending an AP forwarding request acknowledgement to the STA 402 .
  • the AP 406 may perform the previously proposed method to decide whether the AP forwarding is preferable to direct communication between the STA 402 and the STA 404 . If the direct communication is preferable, then the AP 406 may transmit an AP forwarding denial message to the STA 402 , and the forwarding protocol may be terminated. On the other hand, if the AP forwarding is chosen by the AP 406 , then the AP may transmit an AP forwarding confirmation message to the STA 402 and to the STA 404 , announcing that the AP may forward some traffic from the STA 402 to the STA 404 .
  • the AP 406 may assign channel times for the STA 402 to transmit some of its packets to the AP 406 , as well as other channel times for the STA 404 to receive the forwarded packets from the AP 406 .
  • the AP 406 may assign particular frequency bands for data transmission between the STA 402 and the AP 406 , and other possibly different frequency bands for data reception at the STA 404 .
  • the AP 406 may allocate a set of spatial channels for data transmission between the STA 402 and the AP 406 , and another set of spatial channels for forwarding data from the AP 406 to the STA 404 .
  • the forwarding may be performed in one hop, i.e., the STA 402 may send all the data, the AP 406 may receive and buffer them, and then the AP 406 may forward all of the data to the STA 404 .
  • the forwarding may be performed in multiple hops, i.e., data packets may be transmitted and forwarded in multiple cycles.
  • the AP 406 may decode the entire data packet received from the STA 402 , then re-encode it, and finally transmit it to the STA 404 . During the re-encoding, some changes to a header of the data packet may be applied. In another aspect, the AP 406 may decode only a part (e.g., a header) of the data packet received from the STA 402 . The decoded part may be then re-encoded, possibly with some changes applied to its content. A rest of the packet (i.e., a part of the packet that is not decoded) may be only down-converted and then up-converted at the AP 406 before being forwarded to the STA 404 . This remaining part of the packet may be transmitted from the AP 406 to the STA 404 together with the re-encoded part of the packet.
  • a part e.g., a header
  • the AP 406 may forward the data packet received from the STA 402 without decoding and re-encoding any portion of the packet. Instead, the AP 406 may only up-convert the received down-converted data samples, and then transmit them to the STA 404 .
  • the data transmission from the AP 406 to the STA 404 may be performed in real time (i.e., simultaneously with the reception of data at the AP 406 with a defined small delay).
  • the data transmission from the AP 406 to the STA 404 may be performed in a separate time period from the data reception at the AP 406 . In this case, the entire packet may be first buffered at the AP 406 before being forwarded to the STA 404 .
  • the acknowledgement process of each packet may be completed between the AP 406 and the STA 402 , similar to a regular data exchange, before the packet is being forwarded to the STA 404 .
  • the STA 404 may perform its acknowledgement process with the AP 406 , and not with the STA 402 .
  • Certain aspects of the present disclosure support that the acknowledgement from the STA 404 is being forwarded to the STA 402 by the AP 406 . This may remove the requirement of buffering the packets at the AP 406 received from the STA 402 .
  • the AP 406 may inform at least one STA is the network, including the STA 402 , of channel conditions of links between the AP 406 and a plurality of STAs in the network. Therefore, the AP 406 may inform the STA 402 about channel condition of the link between the AP 406 and the STA 402 , as well as about channel condition of the link between the AP 406 and the STA 404 . Based on this information and known channel condition of the direct link between the STA 402 and the STA 404 , the STA 402 may determine whether it is preferable to send the data to the STA 404 via the AP 406 or to send the data directly to the STA 404 .
  • the STA 402 may decide to send the data to the STA 404 via the AP 406 .
  • the STA 402 may send a request or an announcement message to the AP 406 about the decision.
  • the announcement message may be embedded in the data to be forwarded to the STA 404 by the AP 406 .
  • the STA 402 may include an indication within the data that final destination for the data is the STA 404 .
  • the indication may comprise an address of the STA 404 .
  • the AP 406 may know to forward the received data to the STA 404 based on the indication embedded in the received data.
  • FIG. 5 illustrates example operations 500 executed at a source apparatus that may transmit data to an apparatus capable of forwarding data to a destination apparatus in accordance with certain aspects of the present disclosure.
  • the source apparatus may be the STA 402 from FIG. 4
  • the forwarding apparatus may be the AP 406
  • the destination apparatus may be the STA 404 .
  • the source apparatus may exchange messages with the forwarding apparatus.
  • it may be determined, based on the exchange of messages, whether to send data to the destination apparatus via the forwarding apparatus or to send the data directly to the destination apparatus.
  • the source apparatus may transmit data to the destination apparatus based on the determination.
  • the exchanging of messages may comprise exchanging one or more messages indicating directional capability of the forwarding apparatus and directional capability of the source apparatus. Then, based on the directional capability of the forwarding apparatus and the directional capability of the source apparatus, it may be determined (either at the forwarding apparatus or at the source apparatus) whether it is preferable to forward the data to the destination apparatus via the forwarding apparatus or to send the data directly to the destination apparatus.
  • the exchanging of messages may comprise exchanging one or more messages indicating a transmission power of the forwarding apparatus and a transmission power of the source apparatus. Then, based on the transmission power of the forwarding apparatus and the transmission power of the source apparatus, it may be determined (either at the forwarding apparatus or at the source apparatus) whether it is preferable to forward the data to the destination apparatus via the forwarding apparatus or to send the data directly to the destination apparatus.
  • the exchanging of messages may comprise exchanging one or more messages indicating one or more beamforming gains of the forwarding apparatus and of the source apparatus. Then, based on the one or more beamforming gains of the forwarding apparatus and of the source apparatus, it may be determined (either at the forwarding apparatus or at the source apparatus) whether it is preferable to forward the data to the destination apparatus via the forwarding apparatus or to send the data directly to the destination apparatus.
  • FIG. 6 illustrates example operations 600 executed at the forwarding apparatus which may forward the data from the source apparatus to the destination apparatus in accordance with certain aspects of the present disclosure.
  • the forwarding apparatus may receive from the source apparatus a request message to send the data to the destination apparatus.
  • the forwarding apparatus may determine whether it is preferable to send the data from the source apparatus directly to the destination apparatus or to send the data from the source apparatus to the destination apparatus via the forwarding apparatus.
  • the forwarding apparatus may transmit a confirmation message to the source apparatus and to the destination apparatus, said confirmation message indicating that it is preferable to send the data to the destination apparatus via the forwarding apparatus.
  • the source apparatus may transmit the data to the forwarding apparatus, and then the data may be forwarded from the forwarding apparatus to the destination apparatus.
  • the various operations of methods described above may be performed by any suitable means capable of performing the corresponding functions.
  • the means may include various hardware and/or software component(s) and/or module(s), including, but not limited to a circuit, an application specific integrate circuit (ASIC), or processor.
  • ASIC application specific integrate circuit
  • FIG. 5 and FIG. 6 correspond to circuit blocks 502 A- 506 A and 602 A- 606 A illustrated in FIG. 5A and FIG. 6A .
  • determining encompasses a wide variety of actions. For example, “determining” may include calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, a database or another data structure), ascertaining and the like. Also, “determining” may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory) and the like. Also, “determining” may include resolving, selecting, choosing, establishing and the like.
  • a phrase referring to “at least one of a list of items refers to any combination of those items, including single members.
  • “at least one of: a, b, or c” is intended to cover: a, b, c, a-b, a-c, b-c, and a-b-c.
  • any suitable means capable of performing the operations such as various hardware and/or software component(s), circuits, and/or module(s).
  • any operations illustrated in the Figures may be performed by corresponding functional means capable of performing the operations.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array signal
  • PLD programmable logic device
  • a general purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller or state machine.
  • a processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • a software module may reside in any form of storage medium that is known in the art. Some examples of storage media that may be used include random access memory (RAM), read only memory (ROM), flash memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM and so forth.
  • RAM random access memory
  • ROM read only memory
  • flash memory EPROM memory
  • EEPROM memory EEPROM memory
  • registers a hard disk, a removable disk, a CD-ROM and so forth.
  • a software module may comprise a single instruction, or many instructions, and may be distributed over several different code segments, among different programs, and across multiple storage media.
  • a storage medium may be coupled to a processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor.
  • the methods disclosed herein comprise one or more steps or actions for achieving the described method.
  • the method steps and/or actions may be interchanged with one another without departing from the scope of the claims.
  • the order and/or use of specific steps and/or actions may be modified without departing from the scope of the claims.
  • a storage media may be any available media that can be accessed by a computer.
  • such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • Disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray® disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers.
  • certain aspects may comprise a computer program product for performing the operations presented herein.
  • a computer program product may comprise a computer readable medium having instructions stored (and/or encoded) thereon, the instructions being executable by one or more processors to perform the operations described herein.
  • the computer program product may include packaging material.
  • Software or instructions may also be transmitted over a transmission medium.
  • a transmission medium For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of transmission medium.
  • DSL digital subscriber line
  • modules and/or other appropriate means for performing the methods and techniques described herein can be downloaded and/or otherwise obtained by a user terminal and/or base station as applicable.
  • a user terminal and/or base station can be coupled to a server to facilitate the transfer of means for performing the methods described herein.
  • various methods described herein can be provided via storage means (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc.), such that a user terminal and/or base station can obtain the various methods upon coupling or providing the storage means to the device.
  • storage means e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc.
  • CD compact disc
  • floppy disk etc.
  • any other suitable technique for providing the methods and techniques described herein to a device can be utilized.

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US12/619,170 US20110103240A1 (en) 2009-10-29 2009-11-16 Method for forwarding in peer-to-peer wireless communications
KR1020147023139A KR20140108599A (ko) 2009-10-29 2010-10-29 피어-투-피어 무선 통신들에서 포워딩하기 위한 방법
CN201080048792.XA CN102598844B (zh) 2009-10-29 2010-10-29 在对等式无线通信中用于转发的方法和设备
KR1020127013917A KR20120093314A (ko) 2009-10-29 2010-10-29 피어-투-피어 무선 통신들에서 포워딩하기 위한 방법
PCT/US2010/054732 WO2011059818A1 (en) 2009-10-29 2010-10-29 Method for forwarding in peer-to-peer wireless communications
TW099137359A TW201138530A (en) 2009-10-29 2010-10-29 Method for forwarding in peer-to-peer wireless communications
JP2012537120A JP5524342B2 (ja) 2009-10-29 2010-10-29 ピアツーピア無線通信における転送のための方法
EP10779125.3A EP2494845B1 (en) 2009-10-29 2010-10-29 Method for forwarding in peer-to-peer wireless communications
US14/295,185 US10412746B2 (en) 2009-10-29 2014-06-03 Method for forwarding in peer-to-peer wireless communications

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130184024A1 (en) * 2012-01-18 2013-07-18 Renesas Mobile Corporation Asymmetric D2D Communication
US20140050123A1 (en) * 2012-08-17 2014-02-20 Harris Corp Communications system including voip bridge radio providing channel designation features and related methods
WO2015005541A1 (ko) * 2013-07-11 2015-01-15 엘지전자 주식회사 단말 간 직접통신의 서비스 품질을 보장하기 위한 전력 제어 방법 및 이를 위한 장치
EP2840850A1 (en) * 2013-08-08 2015-02-25 Samsung Electronics Co., Ltd Method and apparatus for device-to-device (D2D) communications
EP2846570A1 (en) * 2013-07-10 2015-03-11 HTC Corporation Methods of handling data transmission and reception in device to device communication in wireless communication systems
US20150257166A1 (en) * 2014-03-04 2015-09-10 Samsung Electronics Co., Ltd. Method and apparatus for optimizing local wireless connectivity for point-to-point media streaming
EP2978259A1 (en) * 2013-03-18 2016-01-27 China Academy of Telecommunications Technology D2d switchover method, system, and device
US20160328343A1 (en) * 2015-05-05 2016-11-10 Yahoo!, Inc. Device interfacing
US20170149712A1 (en) * 2014-06-30 2017-05-25 Lg Electronics Inc. Method and device for forwarding message in wireless communication system
US10051651B2 (en) 2013-09-24 2018-08-14 Samsung Electronics Co., Ltd. Device and method for analyzing network topology in wireless communication system
US10165426B1 (en) * 2017-06-22 2018-12-25 Apple Inc. Methods for maintaining line-of-sight communications
WO2019141371A1 (en) * 2018-01-19 2019-07-25 Nokia Technologies Oy Multi-connectivity based on a first sidelink connection and a second connection via base station for wireless networks
US10979960B2 (en) 2016-07-13 2021-04-13 Huawei Technologies Co., Ltd. Communication method, network device, and terminal device supporting multimode communication links

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103037450B (zh) * 2011-09-29 2017-01-25 华为技术有限公司 一种通信模式切换的方法和装置
CN103916886B (zh) * 2012-12-30 2017-08-04 重庆重邮信科通信技术有限公司 虚拟测试方法、系统、模拟基站和测试终端
CN103974454B (zh) * 2013-01-28 2017-10-31 财团法人资讯工业策进会 传送端直接通信装置、接收端直接通信装置及其通信路径切换方法
US9357580B2 (en) * 2013-02-07 2016-05-31 Industrial Technology Research Institute Method for switching communication connection mode, communication system, base station, transmitter and receiver
WO2015046860A1 (ko) * 2013-09-24 2015-04-02 삼성전자주식회사 무선 통신 시스템에서 망 토폴로지 분석을 위한 장치 및 방법
US9414303B1 (en) 2015-01-16 2016-08-09 Kyynel Ltd Network access using mobile base stations
CN106303908B (zh) 2015-05-29 2019-11-29 北京智谷睿拓技术服务有限公司 设备间通信方法及设备间通信装置
CN106303912A (zh) 2015-05-29 2017-01-04 北京智谷睿拓技术服务有限公司 设备间通信控制方法及控制装置
CN106303910B (zh) * 2015-05-29 2020-01-10 北京智谷睿拓技术服务有限公司 设备间通信控制方法及控制装置
JP6897566B2 (ja) * 2015-11-19 2021-06-30 ソニーグループ株式会社 装置及び方法
JP2017103586A (ja) 2015-12-01 2017-06-08 株式会社リコー 無線通信システム、無線通信装置、及びプログラム
CN107231702B (zh) * 2016-03-24 2021-09-10 中兴通讯股份有限公司 直连链路的建立方法及其实现数据传输的方法和节点
CN106937392B (zh) * 2017-04-28 2020-04-14 北京邮电大学 一种基于dash业务中用户体验质量的无线资源调度方法
WO2019239505A1 (ja) * 2018-06-12 2019-12-19 株式会社Ｎｔｔドコモ ユーザ装置及び基地局装置
US11140457B1 (en) * 2018-09-20 2021-10-05 Amazon Technologies, Inc. Network routing selections for wireless devices
US20230198645A1 (en) * 2021-12-21 2023-06-22 Dish Network Technologies India Private Limited Methods, devices, and systems for distributing content in community of over-the-air broadcast content receivers

Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6415146B1 (en) * 1999-05-25 2002-07-02 Lucent Technologies Inc. Wireless system enabling mobile-to-mobile communication
US6678341B1 (en) * 1995-07-18 2004-01-13 Casio Computer Co., Ltd. Multimode radio communication system
US20040063458A1 (en) * 2002-10-01 2004-04-01 Masato Hori Wireless LAN communication system
US20040160980A1 (en) * 2002-04-30 2004-08-19 Kenichi Miyoshi Wireless communication device
US20050036469A1 (en) * 2002-06-12 2005-02-17 Globespan Virata Incorporated Event-based multichannel direct link
US20050094588A1 (en) * 2002-06-12 2005-05-05 Globespan Virata Incorporated Direct link relay in a wireless network
US20050130634A1 (en) * 2003-10-31 2005-06-16 Globespanvirata, Inc. Location awareness in wireless networks
US20060130634A1 (en) * 2004-03-05 2006-06-22 Bryson Alan C String stretcher for stringed instruments
US20060193292A1 (en) * 2005-02-28 2006-08-31 Microsoft Corporation Measurement based mechanism to enable two wireless devices to directly communicate with each other to support traffic prioritization
US20060270415A1 (en) * 2005-05-24 2006-11-30 Intel Corporation Direct link establishment in wireless networks
US20080045147A1 (en) * 2006-08-17 2008-02-21 Fujitsu Limited Radio terminal, relay station, radio base station and communication method
US20080113684A1 (en) * 2006-11-15 2008-05-15 Samsung Electronics Co., Ltd. Method for transmitting and receiving data in a mobile communication system
US20090016232A1 (en) * 2007-07-09 2009-01-15 Samsung Electronics Co. Ltd. Method and apparatus for supporting connectivity of peer-to-peer (p2p) communication in mobile communication system
US20090017807A1 (en) * 2007-07-09 2009-01-15 Samsung Electronics Co. Ltd. Method and apparatus for adaptive peer to peer communication selection in wireless communication system
US20090073914A1 (en) * 2007-09-17 2009-03-19 Lg Electronics Inc. Message coding in a relayed communications network
US20090168736A1 (en) * 2007-12-26 2009-07-02 Takeshi Itagaki Wireless communication system, wireless communication device, wireless communication method, and program
US20090268634A1 (en) * 2008-04-25 2009-10-29 Canon Kabushiki Kaisha Communication apparatus, and control method and computer program for the same
US20100142441A1 (en) * 2006-10-30 2010-06-10 Kyocera Corporation Radio communication method and base station
US20100261469A1 (en) * 2009-04-08 2010-10-14 Nokia Corporation Apparatus and method for mode selection for device-to-device communications
US8238835B2 (en) * 2006-12-07 2012-08-07 Mitsubishi Electric Corporation Wireless communication system, wireless terminal station, wireless base station, and wireless communication 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

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2356322B (en) * 1996-08-02 2001-07-25 Motorola Ltd Method of determining communications mode
US5995500A (en) * 1997-07-18 1999-11-30 Telefonaktiebolaget Lm Ericsson Method and apparatus for direct communication between mobile stations
KR100547116B1 (ko) * 2003-05-23 2006-01-26 삼성전자주식회사 무선 네트워크를 통한 통신 방법 및 그 장치
GB2408173A (en) * 2003-11-13 2005-05-18 Toshiba Res Europ Ltd Use of communication terminal as a repeater.
KR20050048414A (ko) * 2003-11-19 2005-05-24 삼성전자주식회사 무선 네트워크에서 무선 디바이스간의 연결 요청 중계방법 및 장치
US7804762B2 (en) 2003-12-30 2010-09-28 Intel Corporation Method and apparatus for implementing downlink SDMA in a wireless network
KR20060035358A (ko) 2004-10-22 2006-04-26 삼성전자주식회사 다수의 송수신 안테나를 구비하는 이동통신시스템의 고속데이터 통신 장치 및 방법
JP4727371B2 (ja) * 2005-09-29 2011-07-20 京セラ株式会社 通信端末、移動体通信システム、および通信方法
JP2007295541A (ja) * 2006-03-28 2007-11-08 Matsushita Electric Ind Co Ltd 無線通信システム
US7668560B2 (en) * 2006-05-25 2010-02-23 Sony Ericsson Mobile Communications Ab Method and apparatus for accessing network isolated devices
US7656849B1 (en) * 2006-05-31 2010-02-02 Qurio Holdings, Inc. System and method for bypassing an access point in a local area network for P2P data transfers
JP4976776B2 (ja) * 2006-07-31 2012-07-18 キヤノン株式会社 通信装置、通信方法、並びに当該通信方法をコンピュータに実行させるためのコンピュータプログラム
EP1998499A1 (en) * 2007-05-31 2008-12-03 Nokia Siemens Networks Oy Polling for peer-to-peer traffic
KR101445078B1 (ko) * 2007-10-04 2014-11-03 삼성전자주식회사 릴레이 시스템 및 상기 릴레이 시스템을 위한 데이터프레임 구조
EP2215886A1 (en) * 2007-11-29 2010-08-11 Nokia Corporation Coordinating operation in infrastructure and ad-hoc modes for wireless networks
KR101081732B1 (ko) * 2007-12-05 2011-11-08 한국전자통신연구원 무선통신 시스템에서의 데이터 송수신 장치 및 방법
JP4506829B2 (ja) * 2007-12-26 2010-07-21 ソニー株式会社 無線通信システム、無線通信装置、無線通信方法、およびプログラム
US8670440B2 (en) * 2008-05-13 2014-03-11 Electronics And Telecommunications Research Institute Data transceiving apparatus and method in centralized MAC-based wireless communication system
US9236933B2 (en) * 2008-05-23 2016-01-12 Electronics And Telecommunications Research Institute Apparatus and method for transmitting and receiving data using multi-path in wireless communication system of distributed MAC
US8094577B2 (en) * 2008-07-14 2012-01-10 Electronics And Telecommunications Research Institute Apparatus and method for transceiving data using relay device in wireless communication system of centralized MAC

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6678341B1 (en) * 1995-07-18 2004-01-13 Casio Computer Co., Ltd. Multimode radio communication system
US6415146B1 (en) * 1999-05-25 2002-07-02 Lucent Technologies Inc. Wireless system enabling mobile-to-mobile communication
US20040160980A1 (en) * 2002-04-30 2004-08-19 Kenichi Miyoshi Wireless communication device
US20050036469A1 (en) * 2002-06-12 2005-02-17 Globespan Virata Incorporated Event-based multichannel direct link
US20050094588A1 (en) * 2002-06-12 2005-05-05 Globespan Virata Incorporated Direct link relay in a wireless network
US20040063458A1 (en) * 2002-10-01 2004-04-01 Masato Hori Wireless LAN communication system
US20050130634A1 (en) * 2003-10-31 2005-06-16 Globespanvirata, Inc. Location awareness in wireless networks
US20060130634A1 (en) * 2004-03-05 2006-06-22 Bryson Alan C String stretcher for stringed instruments
US20060193292A1 (en) * 2005-02-28 2006-08-31 Microsoft Corporation Measurement based mechanism to enable two wireless devices to directly communicate with each other to support traffic prioritization
US20060270415A1 (en) * 2005-05-24 2006-11-30 Intel Corporation Direct link establishment in wireless networks
US20080045147A1 (en) * 2006-08-17 2008-02-21 Fujitsu Limited Radio terminal, relay station, radio base station and communication method
US20100142441A1 (en) * 2006-10-30 2010-06-10 Kyocera Corporation Radio communication method and base station
US20080113684A1 (en) * 2006-11-15 2008-05-15 Samsung Electronics Co., Ltd. Method for transmitting and receiving data in a mobile communication system
US8238835B2 (en) * 2006-12-07 2012-08-07 Mitsubishi Electric Corporation Wireless communication system, wireless terminal station, wireless base station, and wireless communication method
US20090016232A1 (en) * 2007-07-09 2009-01-15 Samsung Electronics Co. Ltd. Method and apparatus for supporting connectivity of peer-to-peer (p2p) communication in mobile communication system
US20090017807A1 (en) * 2007-07-09 2009-01-15 Samsung Electronics Co. Ltd. Method and apparatus for adaptive peer to peer communication selection in wireless communication system
US20090073914A1 (en) * 2007-09-17 2009-03-19 Lg Electronics Inc. Message coding in a relayed communications network
US8050213B2 (en) * 2007-09-17 2011-11-01 Lg Electronics, Inc. Message coding in a relayed communications network
US20090168736A1 (en) * 2007-12-26 2009-07-02 Takeshi Itagaki Wireless communication system, wireless communication device, wireless communication method, and program
US20090268634A1 (en) * 2008-04-25 2009-10-29 Canon Kabushiki Kaisha Communication apparatus, and control method and computer program for the same
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
US20100261469A1 (en) * 2009-04-08 2010-10-14 Nokia Corporation Apparatus and method for mode selection for device-to-device communications

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130184024A1 (en) * 2012-01-18 2013-07-18 Renesas Mobile Corporation Asymmetric D2D Communication
US20140050123A1 (en) * 2012-08-17 2014-02-20 Harris Corp Communications system including voip bridge radio providing channel designation features and related methods
US9826567B2 (en) * 2013-03-18 2017-11-21 China Academy Of Telecommunications Technology D2D switchover method, system, and device
EP2978259A1 (en) * 2013-03-18 2016-01-27 China Academy of Telecommunications Technology D2d switchover method, system, and device
US20160029429A1 (en) * 2013-03-18 2016-01-28 China Academy Of Telecommunications Technology D2d switchover method, system, and device
EP2978259A4 (en) * 2013-03-18 2016-06-08 China Academy Of Telecomm Tech METHOD, SYSTEM AND DEVICE FOR D2D PERMUTATION
US9538371B2 (en) 2013-07-10 2017-01-03 Htc Corporation Method of handling data transmission and reception in device to device communication in wireless communication systems
EP2846570A1 (en) * 2013-07-10 2015-03-11 HTC Corporation Methods of handling data transmission and reception in device to device communication in wireless communication systems
WO2015005541A1 (ko) * 2013-07-11 2015-01-15 엘지전자 주식회사 단말 간 직접통신의 서비스 품질을 보장하기 위한 전력 제어 방법 및 이를 위한 장치
US9883468B2 (en) 2013-07-11 2018-01-30 Lg Electronics Inc. Power control method for guaranteeing quality of service of device to device direct communication and apparatus therefor
EP2840850A1 (en) * 2013-08-08 2015-02-25 Samsung Electronics Co., Ltd Method and apparatus for device-to-device (D2D) communications
US9572048B2 (en) 2013-08-08 2017-02-14 Samsung Electronics Co., Ltd. Communication method and apparatus for device-to-device (D2D)
US10051651B2 (en) 2013-09-24 2018-08-14 Samsung Electronics Co., Ltd. Device and method for analyzing network topology in wireless communication system
US20150257166A1 (en) * 2014-03-04 2015-09-10 Samsung Electronics Co., Ltd. Method and apparatus for optimizing local wireless connectivity for point-to-point media streaming
US20170149712A1 (en) * 2014-06-30 2017-05-25 Lg Electronics Inc. Method and device for forwarding message in wireless communication system
US10530722B2 (en) * 2014-06-30 2020-01-07 Lg Electronics Inc. Method and device for forwarding message in wireless communication system
US9971714B2 (en) * 2015-05-05 2018-05-15 Oath Inc. Device interfacing
US20160328343A1 (en) * 2015-05-05 2016-11-10 Yahoo!, Inc. Device interfacing
US10979960B2 (en) 2016-07-13 2021-04-13 Huawei Technologies Co., Ltd. Communication method, network device, and terminal device supporting multimode communication links
US10165426B1 (en) * 2017-06-22 2018-12-25 Apple Inc. Methods for maintaining line-of-sight communications
WO2019141371A1 (en) * 2018-01-19 2019-07-25 Nokia Technologies Oy Multi-connectivity based on a first sidelink connection and a second connection via base station for wireless networks

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CN102598844B (zh) 2016-01-20
TW201138530A (en) 2011-11-01
JP2013509826A (ja) 2013-03-14
WO2011059818A1 (en) 2011-05-19
EP2494845A1 (en) 2012-09-05
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KR20140108599A (ko) 2014-09-11
US10412746B2 (en) 2019-09-10

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