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WO2017049955A1 - Procédé de découverte de stations pour communication de dispositif à dispositif, stations, et points d'accès - Google Patents

Procédé de découverte de stations pour communication de dispositif à dispositif, stations, et points d'accès Download PDF

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Publication number
WO2017049955A1
WO2017049955A1 PCT/CN2016/084578 CN2016084578W WO2017049955A1 WO 2017049955 A1 WO2017049955 A1 WO 2017049955A1 CN 2016084578 W CN2016084578 W CN 2016084578W WO 2017049955 A1 WO2017049955 A1 WO 2017049955A1
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WIPO (PCT)
Prior art keywords
discovery
frame
station
access point
site
Prior art date
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Ceased
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PCT/CN2016/084578
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English (en)
Chinese (zh)
Inventor
苏宏家
朱俊
吴霁
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
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Publication of WO2017049955A1 publication Critical patent/WO2017049955A1/fr
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Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • 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
    • H04W74/00—Wireless channel access
    • H04W74/04—Scheduled access
    • H04W74/06—Scheduled access using polling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to an end-to-end communication site discovery method, a first site, a second site, and an access point.
  • the device-to-deceive (D2D) communication technology is a technology that allows direct communication between terminals. It can increase the spectrum efficiency of the communication system, reduce the transmission power of the terminal, and solve the spectrum resources of the wireless communication system to a certain extent. The lack of problems can significantly improve the performance of the entire network system.
  • the end-to-end communication site discovery process refers to the process of the site discovering a site capable of end-to-end communication with itself.
  • the end-to-end communication site discovery process is necessary for end-to-end communication link establishment and end-to-end communication site data transmission. process.
  • the discovery process of the existing end-to-end communication site is in accordance with the traditional Carrier Sense Multiple Access (CSMA) mechanism.
  • CSMA Carrier Sense Multiple Access
  • the first site After the first site initiates the end-to-end communication site discovery request, it can perform the connection with the first site. Multiple sites of the end communication simultaneously reply to the first site in a competitive manner, but only one site competing for the channel can successfully reply the response message to the first site, and becomes the opposite end-to-end with the first site. Communication site. Therefore, each time the first site initiates an end-to-end communication site discovery request, only one site can be found at a time, and the end-to-end communication site is found to be inefficient.
  • the end-to-end communication site discovery process is initiated by a plurality of first sites in a competitive manner, which causes competition conflicts between multiple first sites.
  • Embodiments of the present invention provide an end-to-end communication site discovery method, a first site, a second site, and an access point, so as to improve end-to-end communication site discovery efficiency and avoid multiple initiation of an end-to-end communication site discovery process. A contention conflict between sites.
  • an end-to-end communication site discovery method includes:
  • the first station acquires discovery resources from the access point, and discovers resources for end-to-end link transmission;
  • the first station broadcasts a discovery trigger frame on the discovery resource, and the discovery trigger frame is used to trigger the second station to send a discovery response frame for replying to the discovery trigger frame to the first station, where the first site and the second site have end-to-end communication. ability;
  • the first station receives the discovery response frame sent by the at least one second station and determines that the at least one second station is its own end-to-end communication station.
  • the first site acquires the discovery resource from the access point, including:
  • the first station sends a discovery request frame to the access point, where the request request frame is used to request the access point to acquire the discovery resource;
  • the first station receives the discovery polling frame broadcast by the access point, and finds that the polling frame carries the identifier of the first site and the discovery resource.
  • the method further includes:
  • the first station determines a time at which the access point broadcasts the discovery poll frame
  • the first station remains dormant until the time the access point broadcasts the discovery poll frame, and remains awake at the time the access point broadcasts the discovery poll frame to receive the discovery poll frame.
  • the first station determines the time at which the access point broadcasts the discovery poll frame, including:
  • the first station receives a management frame or a control frame broadcast by the access point, where the management frame or the control frame is used to indicate the time when the access point broadcasts the discovery poll frame;
  • the first station determines, based on the management frame or the control frame, the time at which the access point broadcasts the discovery poll frame.
  • the triggering frame carries a power threshold, where the power threshold is used by the second station to determine a condition for sending the discovery response frame, and the second station sends the discovery response frame, where the second condition includes: The station sends a discovery response frame to the first station when it determines that the received power of the received discovery trigger frame is greater than or equal to the power threshold.
  • the triggering frame carries the basic service unit BSS indication information, where the BSS indication information is used by the second station to determine a condition for sending the discovery response frame, and the second station sends the discovery response frame.
  • the condition includes the second station transmitting a discovery response frame to the first station when determining that it satisfies the condition indicated by the BSS indication information.
  • an end-to-end communication site discovery method includes:
  • the second station receives the discovery trigger frame broadcasted by the first station, and the discovery trigger frame is used to instruct the second station to send a discovery response frame for replying to the discovery trigger frame to the first station, where the second site and the first site are end-to-end Communication capability
  • the second site sends a discovery response frame to the first site
  • the trigger frame carries a power threshold
  • the second station sends a discovery response frame to the first site, including:
  • the second station determines the received power when receiving the discovery trigger frame
  • the second station sends a discovery response frame to the first station when determining that the received power is greater than or equal to the power threshold.
  • the second station sends the discovery response frame to the first station, including:
  • the second station sends an discovery response frame to the first station by using an orthogonal frequency division multiple access OFDMA scheme.
  • the method further includes:
  • the second station receives the discovery poll frame broadcast by the access point, and the discovery poll frame is used to indicate that the second station is ready to receive the discovery trigger frame broadcast by the first station.
  • the method further includes:
  • the second station determines a time at which the access point broadcasts the discovery poll frame
  • the second station remains dormant until the time the access point broadcasts the discovery poll frame, and remains awake at the moment the access point broadcasts the discovery poll frame to receive the discovery poll frame.
  • the determining, by the second station, the time at which the access point broadcasts the discovery poll frame includes:
  • the second station determines the time at which the access point broadcasts the discovery poll frame according to the management frame or control frame broadcast by the access point.
  • the triggering frame is configured to carry basic service unit BSS indication information
  • the second station sends a discovery response frame to the first site, including:
  • the second station transmits a discovery response frame to the first station when determining that it satisfies the condition indicated by the BSS indication information.
  • an end-to-end communication site discovery method includes:
  • the access point receives the discovery request frame sent by the first station, and the discovery request frame is used by the first site to obtain the discovery resource, and the discovery resource is used for the first site broadcast discovery trigger frame;
  • the access point broadcasts the discovery polling frame, and the polling frame is found to carry the first station identifier and the discovery resource, and the polling frame is used to indicate that the second station is ready to receive the discovery trigger frame broadcast by the first station.
  • the method further includes:
  • the access point broadcasts a management frame or a control frame, and the management frame or control frame is used to indicate the time at which the access point broadcasts the discovery poll frame.
  • a first site provided by an embodiment of the present invention includes:
  • the transceiver unit is configured to acquire the discovery resource from the access point, and discover the resource for the end-to-end link transmission; broadcast the discovery trigger frame on the discovery resource, and find that the trigger frame is used to trigger the second station to send and receive the
  • the element sends a discovery response frame for replying to the discovery trigger frame, and the first station and the second station both have end-to-end communication capabilities; and receive at least one discovery response frame sent by the second station;
  • a processing unit configured to determine, after the transceiver unit receives the discovery response frame sent by the at least one second station, the at least one second site is an end-to-end communication site of the first station.
  • the transceiver unit is configured to: when acquiring the discovery resource from the access point, specifically:
  • the processing unit is further configured to:
  • the first station is kept in a dormant state before the time at which the access point broadcasts the discovery poll frame, and the first station remains in the awake state at the time when the access point broadcasts the discovery poll frame, and the transceiver unit receives the discovery poll frame.
  • the transceiver unit is further configured to:
  • the processing unit When determining, by the processing unit, the time at which the access point broadcasts the discovery poll frame, the processing unit is specifically configured to:
  • the time at which the access point broadcasts the discovery poll frame is determined according to the management frame or the control frame received by the transceiver unit.
  • the triggering frame carries a power threshold, where the power threshold is used by the second station to determine a condition for sending the discovery response frame, and the second station sends the discovery response frame, where the second condition includes: The station sends a discovery response frame to the first station when it determines that the received power of the received discovery trigger frame is greater than or equal to the power threshold.
  • the trigger frame is found to carry the basic service.
  • the unit BSS indicates information
  • the BSS indication information is used by the second station to determine a condition for transmitting the discovery response frame
  • the condition for the second station to send the discovery response frame includes: the second station to the first site when determining that the condition of the BSS indication information is satisfied by the second station Send a discovery response frame.
  • a second site provided by the embodiment of the present invention includes:
  • a transceiver unit configured to receive a discovery trigger frame broadcasted by the first station, where the triggering frame is used to instruct the transceiver unit to send a discovery response frame for replying to the discovery trigger frame to the first station, where the second site and the first site have end-to-end End communication capability; sending a discovery response frame to the first station;
  • a processing unit configured to determine, after the transceiver unit receives the discovery trigger frame, that the first station is an end-to-end communication station of the second station.
  • the trigger frame carries a power threshold
  • the processing unit is also used to:
  • control transceiver unit When it is determined that the received power is greater than or equal to the power threshold, the control transceiver unit transmits a discovery response frame to the first station.
  • the sending and receiving unit when sending the discovery response frame to the first station, is specifically used to:
  • the discovery response frame is sent to the first station by using an orthogonal frequency division multiple access OFDMA scheme.
  • the transceiver unit is further configured to:
  • the discovery polling frame broadcasted by the access point is received, and the polling frame is used to indicate that the transceiver unit is ready to receive the discovery trigger frame broadcasted by the first station.
  • the processing unit is further configured to:
  • the second station is controlled to remain dormant before the time at which the access point broadcasts the discovery poll frame, and the second station remains in the awake state at the time the access point broadcasts the discovery poll frame to cause the transceiver unit to receive the discovery poll frame.
  • the transceiver unit is also used to:
  • the processing unit When determining, by the processing unit, the time at which the access point broadcasts the discovery poll frame, the processing unit is specifically configured to:
  • the time at which the access point broadcasts the discovery poll frame is determined according to a management frame or a control frame broadcast by the access point received by the transceiver unit.
  • the triggering frame is configured to carry the basic service unit BSS indication information
  • the processing unit is also used to:
  • the control transceiver unit When it is determined that the second station satisfies the condition indicated by the BSS indication information, the control transceiver unit transmits a discovery response frame to the first station.
  • an access point provided by the embodiment of the present invention includes:
  • a transceiver unit configured to receive a discovery request frame sent by the first station, where the discovery request frame is used by the first site to obtain the discovery resource, and the discovery resource is used for the first site broadcast discovery trigger frame;
  • a processing unit configured to determine a discovery resource of the first site
  • the transceiver unit is further configured to broadcast a polling frame, and the polling frame is configured to carry the first site identifier and the discovery resource determined by the processing unit, and the polling frame is used to indicate that the second station is ready to receive the discovery trigger frame broadcast by the first station.
  • the transceiver unit is further configured to:
  • a broadcast management frame or a control frame is used to instruct the transceiver unit to broadcast the time at which the poll frame is found.
  • a first site provided by the embodiment of the present invention includes:
  • the transceiver is configured to acquire the discovery resource from the access point, discover the resource for the end-to-end link transmission, broadcast the discovery trigger frame on the discovery resource, and find that the trigger frame is used to trigger the second station to send the transceiver to the reply discovery.
  • a discovery response frame of the trigger frame, the first station and the second station both have end-to-end communication capabilities; and receive at least one discovery response frame sent by the second station;
  • a processor after the transceiver receives the discovery response frame sent by the at least one second station, Determining at least one second site as an end-to-end communication site of the first site.
  • the transceiver when the transceiver acquires the discovery resource from the access point, the transceiver is specifically configured to:
  • the processor is further configured to:
  • the first station is kept in a dormant state before the time at which the access point broadcasts the discovery poll frame, and the first station remains in the awake state at the time the access point broadcasts the discovery poll frame, and the transceiver receives the discovery poll frame.
  • the transceiver is further configured to:
  • the processor determines the moment when the access point broadcasts the discovery poll frame, it is specifically used to:
  • the time at which the access point broadcasts the discovery poll frame is determined according to a management frame or a control frame received by the transceiver.
  • the triggering frame carries a power threshold, where the power threshold is used by the second station to determine a condition for sending the discovery response frame, and the second station sends the discovery response frame to include: The station sends a discovery response frame to the first station when it determines that the received power of the received discovery trigger frame is greater than or equal to the power threshold.
  • the triggering frame carries the basic service unit BSS indication information, where the BSS indication information is used by the second station to determine a condition for sending the discovery response frame, and the second station sends the discovery response frame.
  • the condition includes the second station transmitting a discovery response frame to the first station when determining that it satisfies the condition indicated by the BSS indication information.
  • a second site provided by the embodiment of the present invention includes:
  • a transceiver configured to receive a discovery trigger frame broadcast by the first station, where the trigger trigger frame is used to instruct the transceiver to send a discovery response frame for replying to the discovery trigger frame to the first station, where the second site and the first site have end-to-end End communication capability; sending a discovery response frame to the first station;
  • a processor configured to determine, after the transceiver receives the discovery trigger frame, that the first site is an end-to-end communication site of the second site.
  • the trigger frame carries a power threshold
  • the processor is also used to:
  • the control transceiver transmits a discovery response frame to the first station when it is determined that the received power is greater than or equal to the power threshold.
  • the transceiver when the transceiver sends the discovery response frame to the first site, the transceiver is specifically configured to:
  • the discovery response frame is sent to the first station by using an orthogonal frequency division multiple access OFDMA scheme.
  • the transceiver is further configured to:
  • the discovery polling frame broadcasted by the access point is received, and the polling frame is used to indicate that the transceiver is ready to receive the discovery trigger frame broadcast by the first station.
  • the processor is further configured to:
  • the second station is controlled to remain dormant before the time at which the access point broadcasts the discovery poll frame, and the second station remains in the awake state at the time the access point broadcasts the discovery poll frame to cause the transceiver to receive the discovery poll frame.
  • the transceiver is further configured to:
  • the processor determines the moment when the access point broadcasts the discovery poll frame, it is specifically used to:
  • the time at which the access point broadcasts the discovery poll frame is determined according to a management frame or a control frame broadcast by the access point received by the transceiver.
  • the triggering frame is configured to carry basic service unit BSS indication information
  • the processor is also used to:
  • the control transceiver transmits a discovery response frame to the first station when it is determined that the second station satisfies the condition indicated by the BSS indication information.
  • an access point provided by the embodiment of the present invention includes:
  • a transceiver configured to receive a discovery request frame sent by the first station, where the discovery request frame is used by the first site to obtain a discovery resource, and the discovery resource is used for the first site broadcast discovery trigger frame;
  • a processor configured to determine a discovery resource of the first site
  • the transceiver is further configured to broadcast a polling frame, and the polling frame is configured to carry the first site identifier and the discovery resource determined by the processor, and the polling frame is used to indicate that the second station is ready to receive the discovery trigger frame broadcast by the first station.
  • the transceiver is further configured to:
  • a broadcast management frame or control frame is used to indicate when the transceiver broadcasts the discovery poll frame.
  • the technical solution provided in the embodiment of the present invention is particularly applicable to a site-intensive scenario.
  • the end-to-end communication site discovery process initiated by multiple first sites is uniformly coordinated and controlled by the access point, and the first site is obtained from the access point.
  • the first site uses the discovery resource to initiate an end-to-end communication site discovery process, thereby avoiding a contention conflict between multiple first sites in the site-intensive scenario that initiates the end-to-end communication site discovery process.
  • the first site can receive the discovery response sent by the multiple second sites, and then the plurality of second sites mutually determine the peer end as its own end-to-end communication site, thereby improving End-to-end communication sites find efficiency.
  • the embodiment of the invention provides an end-to-end communication site discovery method that can be integrated with end-to-end communication link establishment and end-to-end data transmission to improve overall network efficiency.
  • FIG. 1 is a schematic flowchart of an end-to-end communication site discovery method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a time when a Beacon frame broadcasted by an access point indicates that an access point broadcasts a discovery poll frame according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a second station sending a discovery response frame according to a power threshold according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a first station sending a discovery protection frame according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of a method for discovering an end-to-end communication station according to an embodiment of the present invention
  • FIG. 6 is a schematic flowchart of an end-to-end communication site discovery method according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an inter-device interaction process of an end-to-end communication site discovery method according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an interaction process between devices in an end-to-end communication site discovery method according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of an inter-device interaction process of an end-to-end communication station discovery method according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an inter-device interaction process of an end-to-end communication site discovery method according to an embodiment of the present invention.
  • 11(a) and 11(b) are schematic diagrams showing a second station transmitting a discovery response frame according to the BSS indication information according to an embodiment of the present invention
  • FIG. 12 is a schematic diagram of an interaction process between devices in an end-to-end communication site discovery method according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a first station according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of a second station according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of an access point according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of a first station according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of a second station according to an embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of an access point according to an embodiment of the present invention.
  • Embodiments of the present invention provide an end-to-end communication station discovery method and apparatus (the device includes a first station, a second station, and an access point) to improve end-to-end communication site discovery efficiency and avoid multiple initiated end-to-end communication A contention conflict occurs between sites in the site discovery process.
  • the method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.
  • the technical solution of the present invention relates to an end-to-end communication technology, which is a technology for allowing direct communication between terminals (referred to as a site in the present invention), which can increase the spectrum efficiency of the communication system and reduce the transmission power of the terminal. To some extent, it solves the problem of lack of spectrum resources in wireless communication systems.
  • a site that initiates an end-to-end communication site discovery process is referred to as a first site, and a site that responds to an end-to-end communication site discovery process of the first site is referred to as a second site, a first site, and a second site.
  • Sites can be one or more.
  • the embodiment of the invention provides an end-to-end communication site discovery method, which is particularly suitable for a site-intensive scenario.
  • the end-to-end communication site discovery process initiated by multiple first sites is coordinated and controlled by the access point, and the first site is connected.
  • the ingress acquisition is used to discover resources, and the first site uses the discovery resource to initiate an end-to-end communication site discovery process, thereby avoiding contention conflicts between multiple first sites that initiate an end-to-end communication site discovery process in a site-intensive scenario. .
  • the first site may receive the discovery response sent by multiple second sites, thereby determining that the plurality of second sites are their own end-to-end communication sites, thereby improving end-to-end communication. Site discovery efficiency.
  • the embodiment of the invention provides an end-to-end communication site discovery method, which can be integrated with end-to-end communication link establishment and end-to-end data transmission to improve the whole network. effectiveness.
  • an embodiment of the present invention provides an end-to-end communication site discovery method, including:
  • the first station acquires a discovery resource from an access point, where the discovery resource is used for end-to-end link transmission;
  • the first station broadcasts a discovery trigger frame on the discovery resource, where the triggering frame is used to trigger the second station to send a discovery response frame for replying to the discovery trigger frame to the first station, where the first site and the second site have end-to-end Communication capability;
  • the first station receives the discovery response frame sent by the at least one second station, and determines that the at least one second station is its own end-to-end communication station.
  • the first station acquires the discovery resource from the access point by using the following method:
  • the first station sends a discovery request frame (Discovery Request) for requesting to acquire the discovery resource, and the first station receives a Discovery Polling Frame (DPF) broadcasted by the access point, where the discovery poll frame is carried.
  • the identifier of the first site may be a Media Access Control (MAC) address, an Association Identifier (AID) assigned by the access point to the first site, and the like, which can be used to identify the identifier of the first site.
  • MAC Media Access Control
  • AID Association Identifier
  • the first station sends a discovery request frame to the access point in a random access process, that is, the access point triggers the first site to initiate the end-to-end communication site discovery process by triggering the random access procedure.
  • the access point may receive one or more discovery request frames sent by the first station.
  • the access point notifies each of the discovery resources of the one or more first sites by broadcasting a polling frame.
  • the access point may notify the discovery resources of the multiple first sites by broadcasting one or more discovery polling frames, and the discovery polling frame carries the first site identifier and the discovery resource corresponding to the first site identifier.
  • the discovery polling frame includes a length of time that the first station initiates the end-to-end communication station discovery process, and the length of the time may also be referred to as a Discovery TXOP.
  • the point remains awake for a length of time to receive a discovery response frame sent by the second station.
  • the first station determines a moment when the access point broadcasts the discovery poll frame, and the first station may keep the sleep state before the time when the access point broadcasts the discovery poll frame, and the time when the access point broadcasts the discovery poll frame Stay awake to receive discovery poll frames. That is, the first station can adopt the energy saving mode when there is no service demand before the time when the access point broadcasts the discovery polling frame, so as to save the energy consumption of the first station.
  • the first station determines a time when the access point broadcasts the discovery poll frame by receiving a management frame or a control frame broadcast by the access point, such as a beacon frame (Beacon frame), and the management frame broadcast by the access point or
  • the control frame carries information indicating when the access point broadcasts the discovery poll frame.
  • the first site receives the Beacon frame broadcasted by the access point as an example.
  • the access point periodically broadcasts the Beacon frame.
  • the period of the broadcast Beacon frame is 1 millisecond.
  • the first station receives the first Beacon frame broadcast by the access point, and according to the indication of the first Beacon frame, the access point does not broadcast the discovery poll frame before the arrival of the second Beacon frame. Therefore, the first station can remain dormant until the second Beacon frame arrives.
  • the first station receives the second Beacon frame broadcast by the access point, and according to the indication of the second Beacon frame, the access point broadcasts the discovery poll frame at the time T1 after the second Beacon frame, so the first station is The sleep state is maintained before time T1, and wakes up at time T1 to receive the discovery poll frame broadcast by the access point.
  • the Discovery Trigger Frame (DTF) broadcasted by the first station may carry a power threshold, where the power threshold is used by the second station to determine a condition for transmitting a discovery response frame, and the second station sends a condition for finding a response frame.
  • the method includes: the second station sends a discovery response frame to the first station when determining that the received power of the received discovery trigger frame is greater than or equal to the power threshold.
  • the second station determines to receive the received power of the discovery trigger frame, and compares the received power of the received discovery trigger frame with the power threshold carried by the discovery trigger frame.
  • the second station sends a discovery response frame to the first station, and the first station and the second station respectively determine that the opposite end is its own end-to-end communication station, for example, performing save The operation of the peer site identification information, etc.; when the received power of the discovery trigger frame is less than the power threshold, the second site does not send the discovery response frame to the first site, that is, the first site and the second site are not satisfied.
  • the conditions for the peer end-to-end communication site are not satisfied.
  • the power threshold carried in the triggering frame can be used to control the discovery range.
  • the second station that is closer to the first station receives the received power of the discovery trigger frame sent by the first station. Therefore, if the first site desires to find an end-to-end communication site within a relatively close range, the power threshold can be set larger.
  • the station (STA) 1 broadcasts a discovery trigger frame
  • the power threshold of the discovery trigger frame is P th
  • the received powers of the STA2 to STA 5 receiving the discovery trigger frame are respectively P 1 to P 4 .
  • both P 1 and P 4 are greater than P th and both P 2 and P 3 are less than P th , STA 2 and STA 5 will reply to the first site with a discovery response frame, and STA 3 and STA 4 will not reply the discovery response frame to the first site.
  • the discovery trigger frame broadcasted by the first station may indicate that the second station returns the discovery response frame to the first station, for example, the discovery trigger frame indicates that the second station uses orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access). , OFDMA) mode replies to the first site with a discovery response frame.
  • OFDMA Orthogonal Frequency Division Multiple Access
  • the number of subchannels and subchannels that are available for selection by the second station is found in the trigger frame.
  • the second station may randomly select one of the subchannels to send a discovery trigger frame to the first station.
  • a plurality of second sites use a contention manner to reply to the first site with a discovery response frame, that is, at the same time, the first site can only correctly receive a discovery response frame of the second site.
  • competition conflicts are likely to occur between multiple second sites.
  • the first station can correctly receive the discovery response frames of multiple second sites at the same time, reduce the probability of contention conflict between multiple second sites, and increase the correct discovery efficiency.
  • DIFS Distributed Inter-frame Space
  • the channel is occupied by other sites.
  • the specific content of the protection frame is not limited, and the protection frame can be implemented to protect the channel used for replying the discovery response frame from being occupied by other sites.
  • the protection frame can be found to have padding, such as 000000...000.
  • the first station receives the discovery response frame sent by the at least one second station, and the first station and the second station mutually confirm that the opposite end is its own end-to-end communication station, for example, performing operations for saving the opposite site identification information.
  • the first station after receiving the discovery response frame sent by the second site, the first station sends an acknowledgement frame to the second site.
  • the embodiment of the present invention provides an end-to-end communication site discovery method, including:
  • the second station receives the discovery trigger frame broadcasted by the first station, and the discovery trigger frame is used to instruct the second station to send a discovery response frame for replying to the discovery trigger frame to the first station, where the second site and the first site are both configured. End communication capability;
  • the second station sends a discovery response frame to the first station, and determines that the first station is its own end-to-end communication station.
  • the first site may be one or more.
  • the second station receives the discovery trigger frame broadcasted by the multiple first stations, and sends a discovery response frame to the multiple first sites respectively, which can be determined.
  • Multiple first sites are their own end-to-end communication sites, which in turn improves end-to-end communication site discovery efficiency.
  • the discovery trigger frame received by the second station carries a power threshold, where the power threshold is used by the second station to send a discovery to the first station when determining that the received power of the received discovery trigger frame is greater than or equal to the power threshold.
  • Response frame Specifically, the second station determines to receive the received power of the discovery trigger frame, and compares the received power of the received discovery trigger frame with the power threshold carried by the discovery trigger frame.
  • the second station When the received power of the discovery trigger frame is greater than or equal to the power threshold, the second station sends a discovery response frame to the first station, and the first station and the second station respectively determine that the opposite end is its own end-to-end communication station, for example, performing save The operation of the peer site identification information, etc.; when the received power of the discovery trigger frame is less than the power threshold, the second site does not send the discovery response frame to the first site, that is, the first site and the second site do not satisfy the peer end.
  • the conditions of the end communication site when the received power of the discovery trigger frame is greater than or equal to the power threshold, the second station sends a discovery response frame to the first station, and the first station and the second station respectively determine that the opposite end is its own end-to-end communication station, for example, performing save The operation of the peer site identification information, etc.; when the received power of the discovery trigger frame is less than the power threshold, the second site does not send the discovery response frame to the first site, that is, the first site and the second site do
  • the power threshold carried in the triggering frame can be used to control the discovery range.
  • the second station that is closer to the first station receives the received power of the discovery trigger frame sent by the first station. Therefore, if the first site desires to find an end-to-end communication site within a relatively close range, the power threshold can be set larger.
  • the station (STA) 1 broadcasts a discovery trigger frame
  • the power threshold of the discovery trigger frame is P th
  • the received powers of the STA2 to STA 5 receiving the discovery trigger frame are respectively P 1 to P 4 .
  • P 1 and P 4 are greater than P th
  • P 2 and P 3 are less than P th
  • the STA2 and STA5 first station will respond to the discovery response frame, STA3, and STA4 does not reply to the first station discovery response frame.
  • the discovery trigger frame received by the second station carries basic service set (BSS) indication information, where the BSS indication information is used by the second station to determine a condition for sending a discovery response frame, and second The condition that the station sends the discovery response frame includes: the second station sends a discovery response frame to the first station when determining that it satisfies the condition indicated by the BSS indication information.
  • BSS basic service set
  • the discovery trigger frame received by the second station may indicate the manner in which the second station replies to the first station to find the response frame.
  • the discovery trigger frame indicates that the second station uses the OFDMA manner to reply the first response response frame to the first station.
  • the number of subchannels and subchannels that are available for selection by the second station is found in the trigger frame, and the second station may randomly select one of the subframes after receiving the discovery trigger frame.
  • the subchannels send a discovery trigger frame to the first station.
  • a plurality of second sites use a contention manner to reply to the first site with a discovery response frame, and a plurality of second sites in a site-intensive scenario are prone to contention conflicts. Through the method provided in this embodiment, a contention conflict between multiple second sites can be avoided.
  • the second station may receive the discovery polling frame broadcasted by the access point, and the second station performs the polling frame according to the discovery because the discovery polling frame carries the discovery resource for the first station broadcast discovery trigger frame.
  • the discovery resource of the first station broadcast discovery trigger frame may be known, and then the discovery trigger frame broadcasted by the first station is prepared.
  • the second station determines a moment when the access point broadcasts the discovery poll frame, and the second station may keep the sleep state before the time when the access point broadcasts the discovery poll frame, and the time when the access point broadcasts the discovery poll frame Stay awake to receive discovery poll frames. That is, before the time when the access point broadcasts the discovery polling frame, the second station can adopt the energy saving mode when there is no service demand, so as to save the energy consumption of the second station.
  • the second station determines a time when the access point broadcasts the discovery poll frame by receiving a management frame or a control frame broadcast by the access point, such as a beacon frame (Beacon frame), and the management frame broadcast by the access point or
  • the control frame carries information indicating when the access point broadcasts the discovery poll frame.
  • the second site receives the Beacon frame broadcasted by the access point as an example.
  • the access point periodically broadcasts the Beacon frame.
  • the period of the broadcast Beacon frame is 1 millisecond.
  • the second station receives the first Beacon frame broadcast by the access point, and according to the indication of the first Beacon frame, the access point does not broadcast the discovery polling frame before the arrival of the second Beacon frame. Therefore, the second station can remain dormant until the second Beacon frame arrives.
  • the second station receives the second Beacon frame broadcast by the access point, and according to the indication of the second Beacon frame, the access point broadcasts the discovery poll frame at the time T1 after the second Beacon frame, so the second station is The sleep state is maintained before time T1, and wakes up at time T1 to receive the discovery poll frame broadcast by the access point.
  • the embodiment of the present invention provides an end-to-end communication site discovery method, including:
  • the access point receives the discovery request frame sent by the first station, and finds that the request frame is used for the first station.
  • the point request acquires the discovery resource, and the discovery resource is used for the first site broadcast discovery trigger frame;
  • the access point broadcasts the discovery polling frame, and the polling frame is configured to carry the first site identifier and the discovery resource, where the polling frame is used to indicate that the second station is ready to receive the discovery trigger frame broadcast by the first station.
  • the access point may receive one or more discovery request frames sent by the first station, and the access point notifies the discovery resources of the one or more first sites by using the broadcast discovery poll frame.
  • the first site identifier carried by the discovery polling frame may be an identifier of the first site ID, the first site AID, and the like that can uniquely identify the first site. Sites with end-to-end communication capabilities can receive discovery poll frames broadcast by the access point.
  • the access point broadcasts a management frame or a control frame, where the management frame or the control frame is used to indicate the time when the access point broadcasts the discovery poll frame.
  • the first station or the second station can determine, according to the management frame or the control frame broadcast by the access point, the time at which the access point broadcasts the discovery poll frame, and the first station or the second station can broadcast the discovery poll frame at the access point.
  • the sleep state before arrival wakes up when the access point broadcasts the discovery poll frame to receive the discovery poll frame broadcast by the access point.
  • the interaction process between the first site, the second site, and the access point (AP) is as shown in FIG. 7, FIG.
  • the first station includes STA1 and STA5
  • the second station of STA1 includes STA2, STA4, STA7, STA10, STA11, STA12, and STA13
  • the end-to-end communication station discovery process is performed at an entire bandwidth of 20 MHz.
  • the AP triggers a random access procedure by using a Trigger Frame for Random Access (STAG), and STA1 and STA5 respectively send a discovery request frame to the AP during the random access procedure, and the AP sends a block acknowledgement frame/acknowledgement to STA1 and STA5 respectively.
  • the AP broadcasts a polling frame, and the discovery polling frame carries the discovery resource associated with the STA1 identifier and the STA1 identifier, and the discovery resource associated with the STA5 identifier and the STA5 identifier, and all STAs having end-to-end communication capabilities can receive the polling. frame.
  • the STA1 After receiving the discovery polling frame broadcasted by the AP, the STA1 broadcasts a discovery trigger frame on the discovery resource indicated in the discovery polling frame, and STA2, STA4, STA7, STA10, STA11, STA12, and STA13 respectively reply the discovery response frame to STA1 in the OFDMA mode.
  • STA2, STA4, STA7, STA10, STA11, STA12, and STA13 randomly select one subchannel to reply the discovery response frame to STA1, and STA1 successfully receives STA2.
  • the discovery response frame replied by STA4, STA7 and STA11 since STA10 and STA13 select the same subchannel reply discovery response frame, STA6 and STA12 select the same subchannel reply discovery response frame, STA1 receives the discovery response replied by STA10, STA13, STA6 and STA12 If the frame fails, STA1 determines that STA2, STA4, STA7, and STA11 are their own end-to-end communication stations. STA1 sends a block acknowledgment frame/acknowledgement frame to STA2, STA4, STA7, and STA11, respectively. STA2, STA4, STA7, and STA11 respectively confirm STA1 as its own. End-to-end communication site. Similarly, the end-to-end discovery process of STA5 is the same as the end-to-end discovery process of STA1, and is not described here.
  • the interaction process between the first site, the second site, and the access point (AP) is as shown in FIG. 8.
  • the discovery process shown in FIG. 8 is different from the discovery process shown in FIG. 7 in that, in the discovery process shown in FIG. 8, after the AP receives the discovery request frame sent by STA1 and STA5, the AP discovers the polling twice by broadcasting.
  • the frame is used to indicate the respective discovery resources of the STA1 and the STA5, that is, the discovery polling frame broadcasted by the AP for the first time carries the discovery resource associated with the STA1 identifier and the STA1 identifier, and the discovery polling frame broadcasted by the AP for the second time carries the STA5 identifier and STA5 identifies the associated discovery resource.
  • the AP discovers that the polling frame only indicates the discovery resource of one STA, and the discovery polling frame broadcasted by the AP in the discovery process shown in FIG. 7 indicates the respective discovery resources of the multiple STAs.
  • the interaction process between the first site, the second site, and the access point (AP) is as shown in FIG. 9.
  • the discovery process shown in FIG. 9 differs from the discovery process shown in FIG. 7 and FIG. 8 in that the AP schedules the STA to perform the end-to-end communication station discovery process and the uplink user OFDMA transmission process over the entire bandwidth greater than 20 MHz (eg, 80 MHz).
  • the AP sends an uplink multi-user trigger frame on the entire bandwidth of 80 MHz, and the uplink multi-user trigger frame is used to trigger uplink data transmission.
  • the uplink multi-user triggering frame indicates that each STA sends uplink data to the AP on the specified time-frequency resource, and the uplink multi-user triggering frame includes the content of the discovery polling frame, that is, the end-to-end communication station of the STA in the uplink multi-user triggering frame
  • the discovery process is performed over a specific 20 MHz bandwidth for upstream multi-user data transmission over the remaining 20 MHz bandwidth.
  • the end-to-end communication site discovery process shown in FIG. 9 is the same as the end-to-end communication site discovery process shown in FIG. 7, and details are not described herein again.
  • the interaction process between the first site, the second site, and the access point (AP) is as shown in FIG. 10 .
  • the discovery process shown in FIG. 10 differs in the discovery process in the above example in that the end-to-end communication site discovery process shown in FIG. 10 is performed over a bandwidth of more than 20 MHz, and the end-to-end communication site discovery process in the above example is at 20 MHz. Bandwidth is performed.
  • the discovery polling frame broadcasted by the AP indicates that STA1 and STA5 transmit respective discovery trigger frames on different 20 MHz channels, that is, the discovery resources of STA1 and STA5 have the same time domain but different frequency domains.
  • the discovery trigger frame broadcasted by the first station carries the BSS indication information
  • the BSS indication information is used by the second station to determine the transmission discovery response.
  • the condition of the frame, the condition that the second station sends the discovery response frame includes: when the second station determines that the condition that the BSS indication information is satisfied, the second station sends the discovery response frame to the first station.
  • the BSS indication information is "restrict status" (setting a bit to 1), indicating that the second station belonging to the same BSS as the first station is allowed to be the first
  • the station replies to the discovery response frame. At this time, as shown in FIG.
  • the first station may not reply the block confirmation frame/acknowledgement frame to the second station, and the first station receives the discovery response sent by the second station.
  • the second station is determined to be its own end-to-end communication station, and the second station can determine the second station as its own end-to-end communication station after sending the discovery response frame to the first station. The specific interaction process is shown in Figure 12 and will not be described here.
  • An end-to-end communication site discovery method provided by an embodiment of the present invention is particularly applicable to a site secret
  • the set scenario, the end-to-end communication site discovery process initiated by multiple first sites is coordinated and controlled by the access point, and the first site acquires the resource for discovering from the access point, and the first site uses the discovery resource to initiate the end-to-end
  • the communication site discovery process thus avoids contention conflicts between multiple first sites that initiate an end-to-end communication site discovery process in a site-intensive scenario.
  • the first site can receive the discovery response sent by the multiple second sites, and then the plurality of second sites mutually determine the peer end as its own end-to-end communication site, thereby improving End-to-end communication sites find efficiency.
  • the embodiment of the invention provides an end-to-end communication site discovery method that can be integrated with end-to-end communication link establishment and end-to-end data transmission to improve overall network efficiency.
  • the present invention further provides a first site, which may adopt the method provided by the embodiment corresponding to FIG. 1.
  • the first site 1300 includes: a transceiver unit 1301 and a processing unit. 1302.
  • the transceiver unit 1301 is configured to acquire the discovery resource from the access point, and discover the resource for the end-to-end link transmission.
  • the discovery trigger frame is broadcasted on the discovery resource, and the triggering frame is used to trigger the second station to send to the transceiver unit 1301 for sending. Recovering the discovery response frame of the trigger frame, the first station and the second station both have end-to-end communication capabilities; and receiving at least one discovery response frame sent by the second station;
  • the processing unit 1302 is configured to determine, after the transceiver unit 1301 receives the discovery response frame sent by the at least one second station, that the at least one second site is the end-to-end communication site of the first site.
  • the transceiver unit 1301 when receiving the discovery resource from the access point, the transceiver unit 1301 is specifically configured to:
  • processing unit 1302 is further configured to:
  • the first station is kept in a dormant state before the time at which the access point broadcasts the discovery poll frame, and the first station remains in the awake state at the time when the access point broadcasts the discovery poll frame, and the transceiver unit 1301 receives the discovery poll frame.
  • the transceiver unit 1301 is further configured to:
  • the processing unit 1302 is specifically configured to: when determining an time when the access point broadcasts the discovery poll frame;
  • the time at which the access point broadcasts the discovery poll frame is determined according to the management frame or the control frame received by the transceiver unit 1301.
  • the triggering frame carries a power threshold, where the power threshold is used by the second station to determine a condition for sending the discovery response frame, and the second station sends the discovery response frame, where the second station determines that the received power of the received discovery trigger frame is greater than A discovery response frame is sent to the first station when the power threshold is equal to or equal to.
  • the discovery trigger frame carries the basic service unit BSS indication information, where the BSS indication information is used by the second station to determine a condition for sending the discovery response frame, and the condition that the second station sends the discovery response frame includes: the second station determines that the BSS is satisfied by itself.
  • a discovery response frame is sent to the first site when the condition indicated by the information is indicated.
  • the present invention further provides a second site, which may adopt the method provided by the embodiment corresponding to FIG. 5.
  • the second site 1400 includes: a transceiver unit 1401 and a processing unit. 1402.
  • the transceiver unit 1401 is configured to receive a discovery trigger frame broadcasted by the first station, where the triggering frame is used to instruct the transceiver unit 1401 to send a discovery response frame for replying to the discovery trigger frame to the first station, where the second site and the first site have End-to-end communication capability; sending a discovery response frame to the first site;
  • the processing unit 1402 is configured to determine, after the transceiver unit 1401 receives the discovery trigger frame, that the first station is an end-to-end communication station of the second station.
  • the trigger frame is found to carry a power threshold.
  • the processing unit 1402 is further configured to:
  • control transceiver unit 1401 transmits a discovery response frame to the first station.
  • the sending and receiving unit 1401 sends the discovery response frame to the first station, specifically:
  • the discovery response frame is sent to the first station by using an orthogonal frequency division multiple access OFDMA scheme.
  • the transceiver unit 1401 is further configured to:
  • the discovery polling frame broadcasted by the access point is received, and the polling frame is used to indicate that the transceiver unit 1401 is ready to receive the discovery trigger frame broadcast by the first station.
  • processing unit 1402 is further configured to:
  • the transceiver unit 1401 is further configured to:
  • the processing unit 1402 is specifically configured to: when determining the moment when the access point broadcasts the discovery poll frame;
  • the time at which the access point broadcasts the discovery poll frame is determined according to the management frame or the control frame broadcast by the access point received by the transceiver unit 1401.
  • the discovery trigger frame carries the basic service unit BSS indication information
  • the processing unit 1402 is further configured to:
  • control transceiver unit 1401 transmits a discovery response frame to the first station.
  • the present invention further provides an access point, and the access point may adopt the method provided by the embodiment corresponding to FIG. 6.
  • the access point 1500 includes: a transceiver unit 1501 and a processing unit. 1502.
  • the transceiver unit 1501 is configured to receive a discovery request frame sent by the first station, where the discovery request frame is used by the first site to request to acquire the discovery resource, and the discovery resource is used for the first site broadcast discovery trigger frame;
  • the processing unit 1502 is configured to determine a discovery resource of the first site.
  • the transceiver unit 1501 is further configured to broadcast a polling frame, and discover that the polling frame carries the first site identifier. And the discovery resource determined by the processing unit 1502, the discovery polling frame is used to indicate that the second station is ready to receive the discovery trigger frame broadcasted by the first station.
  • the transceiver unit 1501 is further configured to:
  • a broadcast management frame or a control frame is used to instruct the transceiver unit 1501 to broadcast the time at which the poll frame is found.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • An integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, can be stored in a computer readable storage medium.
  • the technical solution of the present application in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .
  • the present invention further provides a first site, which may adopt the method provided by the embodiment corresponding to FIG. 1, and may be the same device as the first site shown in FIG.
  • the first site 1600 includes a transceiver 1601, a processor 1602, a bus 1603, and a memory 1604, where:
  • the transceiver 1601, the processor 1602, and the memory 1604 are connected to each other through a bus 1603; the bus 1603 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. Wait.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like.
  • the diagram 16 is represented by only one thick line, but does not mean that there is only one bus or one type of bus.
  • the transceiver 1601 is configured to acquire the discovery resource from the access point, and discover the resource for the end-to-end link transmission; broadcast the discovery trigger frame on the discovery resource, and the discovery trigger frame is used to trigger the second station to send to the transceiver 1601 for sending Recovering the discovery response frame of the trigger frame, the first station and the second station both have end-to-end communication capabilities; and receiving at least one discovery response frame sent by the second station;
  • the processor 1602 is configured to determine, after the transceiver 1601 receives the discovery response frame sent by the at least one second station, the at least one second site is an end-to-end communication site of the first site.
  • the transceiver 1601 when acquiring the discovery resource from the access point, is specifically configured to:
  • processor 1602 is further configured to:
  • the first station is kept in a dormant state before the time at which the access point broadcasts the discovery poll frame, and the first station remains in the awake state at the time the access point broadcasts the discovery poll frame, and the transceiver 1601 receives the discovery poll frame.
  • the transceiver 1601 is further configured to:
  • the processor 1602 when determining the moment when the access point broadcasts the discovery poll frame, is specifically used to:
  • the time at which the access point broadcasts the discovery poll frame is determined.
  • the triggering frame carries a power threshold, where the power threshold is used by the second station to determine a condition for sending the discovery response frame, and the second station sends the discovery response frame, where the second station determines that the received power of the received discovery trigger frame is greater than A discovery response frame is sent to the first station when the power threshold is equal to or equal to.
  • the discovery trigger frame carries the basic service unit BSS indication information, and the BSS indication information is used.
  • the condition for transmitting the discovery response frame is determined at the second station, and the condition for the second station to send the discovery response frame includes: the second station transmitting the discovery response frame to the first station when determining that the condition that the BSS indication information is satisfied by the second station is determined.
  • the first site 1600 also includes a memory 1604 for storing programs and the like.
  • the program can include program code, the program code including computer operating instructions.
  • the memory 1604 may include a random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage.
  • the processor 1602 executes the application stored in the memory 1604 to implement the above end-to-end communication site method.
  • the present invention further provides a second site, which may adopt the method provided by the embodiment corresponding to FIG. 5, and may be the same device as the second site shown in FIG.
  • the second site 1700 includes a transceiver 1701, a processor 1702, a bus 1703, and a memory 1704, where:
  • the transceiver 1701, the processor 1702, and the memory 1704 are connected to each other through a bus 1703; the bus 1703 may be a PCI bus or an EISA bus or the like.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 17, but it does not mean that there is only one bus or one type of bus.
  • the transceiver 1701 is configured to receive a discovery trigger frame broadcast by the first station, where the trigger trigger frame is used to instruct the transceiver 1701 to send a discovery response frame for replying to the discovery trigger frame to the first station, where the second site and the first site have End-to-end communication capability; sending a discovery response frame to the first site;
  • the processor 1702 is configured to determine, after the transceiver 1701 receives the discovery trigger frame, that the first station is an end-to-end communication station of the second station.
  • the trigger frame is found to carry a power threshold.
  • the processor 1702 is also configured to:
  • control transceiver 1701 transmits a discovery response frame to the first station.
  • the transceiver 1701 sends the discovery response frame to the first site, specifically:
  • the discovery response frame is sent to the first station by using an orthogonal frequency division multiple access OFDMA scheme.
  • the transceiver 1701 is further configured to:
  • the discovery polling frame broadcasted by the access point is received, and the polling frame is found to indicate that the transceiver 1701 is ready to receive the discovery trigger frame broadcast by the first station.
  • processor 1702 is further configured to:
  • the transceiver 1701 is further configured to:
  • the processor 1702 when determining the moment when the access point broadcasts the discovery poll frame, is specifically used to:
  • the time at which the access point broadcasts the discovery poll frame is determined based on the management frame or control frame broadcast by the access point received by the transceiver 1701.
  • the discovery trigger frame carries the basic service unit BSS indication information
  • the processor 1702 is also configured to:
  • the control transceiver 1701 transmits a discovery response frame to the first station.
  • the second site 1700 also includes a memory 1704 for storing programs and the like.
  • the program can include program code, the program code including computer operating instructions.
  • Memory 1704 may include RAM and may also include non-volatile memory, such as at least one disk storage.
  • the processor 1702 executes the application stored in the memory 1704 to implement the above end-to-end communication site discovery method.
  • the present invention further provides an access point, which may adopt the method provided by the embodiment corresponding to FIG. 6, and may be the same device as the access point shown in FIG.
  • the access point 1800 includes a transceiver 1801, a processor 1802, a bus 1803, and a memory 1804, where:
  • the transceiver 1801, the processor 1802, and the memory 1804 are connected to each other through a bus 1803; the bus 1803 may be a PCI bus or an EISA bus or the like.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 18, but it does not mean that there is only one bus or one type of bus.
  • the transceiver 1801 is configured to receive a discovery request frame sent by the first station, where the discovery request frame is used by the first site to request to acquire the discovery resource, and the discovery resource is used for the first site broadcast discovery trigger frame;
  • the processor 1802 is configured to determine a discovery resource of the first site.
  • the transceiver 1801 is further configured to broadcast a polling frame, and the polling frame is configured to carry the first station identifier and the discovery resource determined by the processor 1802, and the polling frame is used to indicate that the second station is ready to receive the discovery trigger of the first station broadcast. frame.
  • the transceiver 1801 is further configured to:
  • a broadcast management frame or control frame, the management frame or the control frame is used to instruct the transceiver 1801 to broadcast the time at which the poll frame is found.
  • the access point 1800 also includes a memory 1804 for storing programs and the like.
  • the program can include program code, the program code including computer operating instructions.
  • Memory 1804 may include RAM and may also include non-volatile memory, such as at least one disk storage.
  • the processor 1802 executes the application stored in the memory 1804 to implement the above end-to-end communication site discovery method.
  • the technical solution provided by the embodiment of the present invention is particularly applicable to a site-intensive scenario.
  • the end-to-end communication site discovery process initiated by multiple first sites is coordinated and controlled by the access point, and the first site acquires resources for discovering from the access point.
  • the first site uses the discovery resource to initiate an end-to-end communication site discovery process, thereby avoiding contention conflicts between multiple first sites that initiate an end-to-end communication site discovery process in a site-intensive scenario.
  • the first site can receive the discovery response sent by the multiple second sites, and then the plurality of second sites mutually determine the peer end as its own end-to-end communication site, thereby improving End-to-end communication sites find efficiency.
  • the embodiment of the invention provides an end-to-end communication site discovery method that can be integrated with end-to-end communication link establishment and end-to-end data transmission to improve overall network efficiency.
  • embodiments of the present invention may be provided as a method, system, or Computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de découverte de stations pour communication de dispositif à dispositif, une première station, une deuxième station, et des points d'accès destinés à améliorer le rendement de découverte de stations pour communication de dispositif à dispositif et à éviter les conflits entre des stations multiples qui lancent respectivement un processus de découverte de stations pour communication de dispositif à dispositif. Le procédé de la présente invention comporte les étapes suivantes: une première station obtient une ressource de découverte en provenance d'un point d'accès, la ressource de découverte étant utilisée pour l'émission de liaison de dispositif à dispositif; la première station diffuse une trame de déclenchement de découverte sur la ressource de découverte, la trame de déclenchement de découverte étant utilisée pour déclencher l'envoi, par la deuxième station à la première station, d'une trame de réponse de découverte utilisée pour répondre à la trame de déclenchement de découverte, et la première station et la deuxième station possédant toutes deux des capacités de communication de dispositif à dispositif; la première station reçoit la trame de réponse de découverte émise par au moins une deuxième station, et identifie au moins une deuxième station comme étant sa propre station de communication de dispositif à dispositif.
PCT/CN2016/084578 2015-09-21 2016-06-02 Procédé de découverte de stations pour communication de dispositif à dispositif, stations, et points d'accès Ceased WO2017049955A1 (fr)

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