WO2016201702A1 - Wlan中端到端双向传输数据的装置及方法 - Google Patents

Wlan中端到端双向传输数据的装置及方法 Download PDF

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Publication number
WO2016201702A1
WO2016201702A1 PCT/CN2015/081959 CN2015081959W WO2016201702A1 WO 2016201702 A1 WO2016201702 A1 WO 2016201702A1 CN 2015081959 W CN2015081959 W CN 2015081959W WO 2016201702 A1 WO2016201702 A1 WO 2016201702A1
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WIPO (PCT)
Prior art keywords
site
primary
resource
access point
station
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PCT/CN2015/081959
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English (en)
French (fr)
Inventor
苏宏家
朱俊
林英沛
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华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2015/081959 priority Critical patent/WO2016201702A1/zh
Priority to CN201580078682.0A priority patent/CN107534953A/zh
Publication of WO2016201702A1 publication Critical patent/WO2016201702A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to an apparatus and method for bidirectionally transmitting data in an end-to-end manner in a wireless local area network WLAN.
  • 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. Lack of problems.
  • Embodiments of the present invention provide an apparatus and method for bidirectionally transmitting data in an end-to-end manner in a wireless local area network WLAN, so as to avoid communication conflicts occurring in the end-to-end bidirectional data transmission process between the two communication sites.
  • an apparatus for transmitting data in an end-to-end direction in a wireless local area network WLAN includes:
  • a primary site determining module configured to determine a primary site in an end-to-end two-way data transmission process between the first site and the second site where the primary site determining module is located;
  • a resource configuration module configured to acquire, from the access point, a resource used by the primary site determining module to transmit data to the primary site and the second site, and divide the resource into the first resource and the second resource, where the first resource is used for the primary site Transmitting data to the second site, the second resource is used by the second site to transmit data to the primary site;
  • a resource notification module configured to send a notification message to the second site, where the notification message is used to notify the second site to receive the data transmitted by the primary site on the first resource divided by the resource configuration module, and the second resource allocated by the resource configuration module
  • the primary site transmits data.
  • the primary site determining module is specifically configured to:
  • the primary site determining module determines the first site as the primary site
  • the primary site determining module determines the first site as the primary site
  • the primary site determining module determines the first site as the primary site and instructs the second site to cancel the association with the access point.
  • the resource configuration module when the resource configuration module acquires resources for transmitting data of the primary site and the second site determined by the primary site determining module from the access point, the resource configuration module is specifically configured to:
  • the resource request message is sent to the access point by using the uplink resource pre-allocated by the access point, where the resource request message is used to request the access point to allocate resources for transmitting data to the primary site and the second site;
  • the resource notification module is specifically configured to:
  • a trigger frame is sent to the second site, and the trigger message carries the notification message.
  • a second aspect of the present invention provides an apparatus for performing end-to-end bidirectional data transmission in a WLAN in a wireless local area network (WLAN), including:
  • a primary site determining module configured to determine a primary site in an end-to-end two-way data transmission process between the first site and the second site where the primary site determining module is located;
  • a resource notification module configured to receive a notification message sent by the primary site determined by the primary site determining module, where the notification message is used to notify the second site to receive data transmitted by the primary site on the first resource, and in the second The data is transferred to the primary site on the resource.
  • the primary site determining module is specifically configured to:
  • the primary site determining module determines the first site as the primary site
  • the primary site determining module determines the first site as the primary site
  • the primary site determining module determines to cancel the association with the access point and determines that the first site is the primary site.
  • the resource notification module is specifically configured to:
  • the trigger frame sent by the primary station is received, and the trigger message carries the notification message.
  • an apparatus for performing end-to-end bidirectional data transmission in a wireless local area network WLAN includes:
  • a processor configured to determine a primary site in an end-to-end bidirectional data transmission process between the first site and the second site where the processor is located;
  • a transceiver configured to acquire, from an access point, a resource used by the processor to determine data transmitted by the primary site and the second site;
  • the processor is further configured to divide the resources acquired by the transceiver into the first resource and the second resource, where the first resource is used by the primary site to transmit data to the second site, and the second resource is used by the second site to transmit data to the primary site;
  • the transceiver is further configured to send a notification message to the second station, where the notification message is used to notify the second station to receive the data transmitted by the primary site on the first resource partitioned by the processor and to the primary site on the second resource partitioned by the processor. transfer data.
  • the processor when determining, by the processor, the primary site in the end-to-end bidirectional data transmission process between the first site and the second site where the processor is located, the processor is specifically configured to:
  • the processor determines the first site as the primary site
  • the processor determines that the first site is the primary site
  • the processor determines the first site as the primary site, and controls the transceiver to instruct the second site to cancel the association with the access point.
  • the transceiver acquires, from the access point, the resource used by the processor to determine the data transmitted by the primary site and the second site, the specific use is:
  • the resource request message is sent to the access point by using the uplink resource pre-allocated by the access point, where the resource request message is used to request the access point to allocate resources for transmitting data to the primary site and the second site;
  • a trigger frame is sent to the second site, and the trigger message carries the notification message.
  • a fourth aspect of the present invention provides an apparatus for performing end-to-end bidirectional data transmission in a WLAN in a wireless local area network (WLAN), including:
  • a processor configured to determine a primary site in an end-to-end bidirectional data transmission process between the first site and the second site where the processor is located;
  • the transceiver is configured to receive a notification message sent by the primary station determined by the processor, where the notification message is used to notify the second station to receive data transmitted by the primary site on the first resource and to transmit data to the primary site on the second resource.
  • the processor determines the first site as the primary site
  • the processor determines that the first site is the primary site
  • the processor cancels the association with the access point and determines that the first site is the primary site.
  • the transceiver when the transceiver receives the notification message sent by the primary station determined by the processor, specifically:
  • the trigger frame sent by the primary station is received, and the trigger message carries the notification message.
  • a fifth aspect of the present invention provides a method for performing end-to-end bidirectional data transmission in a WLAN in a wireless local area network (WLAN), including:
  • the first station determines a primary site in the end-to-end two-way data transmission process between the first site and the second site;
  • the primary site acquires resources for the primary site and the second site to transmit data from the access point, and divides the resources into the first resource and the second resource, where the first resource is used by the primary site to transmit data to the second site, and the second resource is used. Used by the second site to transmit data to the primary site;
  • the primary site sends a notification message to the second site, the notification message is used to notify the second site to receive data transmitted by the primary site on the first resource and to transmit data to the primary site on the second resource.
  • the first station determines the primary site in the end-to-end bidirectional data transmission process between the first site and the second site, including:
  • the first site determines itself as the primary site
  • the first site determines itself as the primary site
  • the first site determines itself as the primary site and instructs the second site to cancel the association with the access point.
  • the primary site acquires resources for the primary site and the second site to transmit data from the access point, including:
  • the primary site sends a resource request message to the access point by using the uplink resource pre-allocated by the access point, where the resource request message is used to request the access point to allocate resources for transmitting data to the primary site and the second site;
  • the primary site receives resources allocated by the access point for the primary site and the second site to transmit data.
  • the primary site sends a notification message to the second site, including:
  • the primary site sends a trigger frame to the second site, and the trigger frame carries the notification message.
  • a method for bidirectional data transmission in a wireless local area network (WLAN) WLAN includes:
  • the second station determines the primary site in the end-to-end two-way data transmission process between the first site and the second site;
  • the second station receives the notification message sent by the primary site, and the notification message is used to notify the second site to receive the data transmitted by the primary site on the first resource and to transmit data to the primary site on the second resource.
  • the second station determines the primary site in the end-to-end bidirectional data transmission process between the first site and the second site, including:
  • the second site determines the first site as the primary site
  • the second site determines the first site as the primary site
  • the second site cancels the association with the access point and determines that the first site serves as the primary site.
  • the second station receives the notification message sent by the primary site, including:
  • the second station receives the trigger frame sent by the primary station, and the trigger frame carries the notification message.
  • the first station acquires data for the primary station and the second station from the access point through the primary station.
  • Resources can avoid the problem of communication conflicts between two sites simultaneously requesting resources in the end-to-end two-way data transmission process of the prior art.
  • the obtained resource is divided into a first resource and a second resource by using the primary site, where the first resource is used for transmitting data to the second site by the primary site, the second resource is used for transmitting data to the primary site by the second site, and the second site is notified by the primary site.
  • the station receives the data transmitted by the primary site on the first resource and transmits the data to the primary site on the second resource, which can avoid the communication conflict problem that occurs when the two sites simultaneously transmit data to the opposite site in the prior art.
  • FIG. 1 is a schematic flowchart of a method for bidirectionally transmitting data in an end-to-end manner in a wireless local area network WLAN according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of determining a primary site of a first site according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of determining a primary site of a first site according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of determining a primary site of a first site according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of resources allocated by an access point for transmitting data between a primary site and a second site according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a trigger frame sent by a primary station to a second station according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of a process for allocating resources once for a data transmission process of an access point of a primary site and a second site according to an embodiment of the present invention
  • FIG. 8 is a schematic flowchart of a method for bidirectionally transmitting data in an end-to-end manner in a wireless local area network WLAN according to an embodiment of the present disclosure
  • FIG. 9 is a schematic structural diagram of an apparatus for bidirectionally transmitting data in an end-to-end manner in a wireless local area network WLAN according to an embodiment of the present disclosure
  • FIG. 10 is a schematic structural diagram of an apparatus for bidirectionally transmitting data in an end-to-end manner in a wireless local area network WLAN according to an embodiment of the present disclosure
  • FIG. 11 is a schematic structural diagram of an apparatus for bidirectionally transmitting data in an end-to-end manner in a wireless local area network WLAN according to an embodiment of the present disclosure
  • FIG. 12 is a schematic structural diagram of an apparatus for bidirectionally transmitting data in an end-to-end manner in a wireless local area network WLAN according to an embodiment of the present invention.
  • the technical solution of the present invention is applicable to a communication system for end-to-end bidirectional data transmission in a wireless local area network WLAN.
  • the end-to-end communication technology is a technology that allows direct communication between terminals (referred to as the site in the present invention), which can increase the spectrum efficiency of the communication system, reduce the transmission power of the terminal, and solve the problem of lack of spectrum resources of the wireless communication system to a certain extent. .
  • Two sites that perform end-to-end two-way data transmission can transfer data to each other's sites.
  • an embodiment of the present invention provides a method for bidirectionally transmitting data in an end-to-end manner in a wireless local area network (WLAN), including:
  • the first station determines a primary site in the end-to-end bidirectional data transmission process between the first site and the second site.
  • the primary site acquires, by the access point, resources for transmitting data by the primary site and the second site, and divides the resources into the first resource and the second resource, where the first resource is used by the primary site to transmit data to the second site, where The second resource is used by the second site to transmit data to the primary site;
  • the primary site sends a notification message to the second site, where the notification message is used to notify the second site to receive data transmitted by the primary site on the first resource and to transmit data to the primary site on the second resource.
  • both the first site and the second site performing end-to-end bidirectional data transmission have end-to-end data transmission capabilities.
  • the S101 first station determines the primary site in the end-to-end bidirectional data transmission process between the first site and the second site, and may have the following two implementation manners:
  • the first site determines itself as the primary site.
  • the first site determines that it has the following three conditions as the primary site:
  • the first site when the first site has an associated access point, and the second site does not have an associated access point, the first site serves as the first site and the second site performs end-to-end bidirectional The primary site during data transfer.
  • the primary site Since the primary site is responsible for obtaining the number of inter-site transmissions to the associated access point during data transmission According to the resources, the primary site must have an associated access point.
  • the first site serves as the first site and The second site performs the primary site during the end-to-end bidirectional data transmission process.
  • the second site may also serve as a primary site in the end-to-end bidirectional data transmission process between the first site and the second site.
  • the first site serves as the first site.
  • the primary site during the end-to-end two-way data transmission with the second site cancels the association with the access point.
  • the access point associated with the second site is higher than the priority of the second site by the access point associated with the second site, and the access point associated with the second site is The instructions to the second site interfere with the data transfer process between the sites.
  • the data transmission between the primary site and the second site is preferentially performed, and the second site is required to cancel the association with the access point.
  • the second site is also used as the primary site in the end-to-end two-way data transmission process between the first site and the second site, and the first site needs to cancel the association with the access point.
  • the first station sends, to the second station, a request message for requesting the second station to establish a data transmission link with the first station, where the request message includes information of the first site as the primary site; the first site Receiving a response message for confirming the request message replied by the second site.
  • the first site is notified by the second site to the first site as the primary site.
  • the first site receives a notification message sent by the second site to notify the first site as the primary site, and the first site determines itself as the primary site according to the notification message.
  • the first station receives, by the second station, a request message for requesting the first station to establish a data transmission link with the second station, where the request message includes information of the first site as the primary site;
  • the site replies to the second site with a response message for confirming the request message.
  • the primary station acquires the number of transmissions for the primary site and the second site from the access point in S102.
  • the methods of resource according to:
  • the primary site sends a resource request message to the access point by using the uplink resource pre-allocated by the access point, where the resource request message is used to request the access point to allocate resources for transmitting data to the primary site and the second site;
  • the primary site receives resources allocated by the access point for the primary site and the second site to transmit data.
  • the resource request message sent by the primary site includes resource requirement information, and the access point allocates resources for data transmission between the primary site and the second site according to the resource requirement information.
  • the resource requirement information may include the amount of resources required by the two sites to transmit data to the other site, and may also include the amount of resources required by any one of the sites to transmit data to the other site.
  • FIG. 5 is a schematic diagram showing resources allocated by the access point associated with the primary site for the data transmission between the primary site and the second site (represented by parallel resources in FIG. 5), and the figure includes four different forms of parallel resources, each row. Corresponds to a parallel resource form. The first row indicates that the parallel resource has the same time domain as the uplink resource and the frequency domain is different. The parallel resource and the downlink resource have different time domains and frequency domains; the second row indicates that the parallel resource and the downlink resource have the same time domain and different frequency domains, and are parallel.
  • the time domain and the frequency domain of the resource and the uplink resource are different; the third row indicates that the parallel resource has the same frequency domain as the uplink resource and the time domain is different, and the parallel resource and the downlink resource have different time domain and frequency domain; the fourth row indicates the parallel resource and the downlink.
  • the resource frequency domain is the same and the time domain is different.
  • the parallel resource and the uplink resource are different in time domain and frequency domain.
  • the access station since the two sites constituting the end-to-end communication do not need to pass through the access point during the data transmission process, the access station cannot know the actual communication status of the communication site, and therefore the two sites use the data for transmitting to the other site.
  • the resources are pre-allocated by the access point, so that the access point can only allocate resources according to experience, so it is easy to cause the amount of resources allocated by the access point to be inaccurate.
  • the two sites cannot timely allocate resources to the access point according to actual resource requirements, which results in the efficiency of the site requesting resource allocation and the efficiency of the access point allocating resources.
  • the primary site may use the uplink resource allocated by the access point associated with the primary site to report the resource requirements of the two sites in the data transmission process to the access point, and the access point associated with the primary site may be based on the resource requirement.
  • the information is allocated to the primary site and the second site, and the second site does not participate in the resource requirement reporting process, so as to avoid the problem that the two sites simultaneously request the communication conflict in the data transmission process.
  • the primary site divides the resources allocated by the access point for the two sites to transmit data to the other site into the first resource and the second resource, and notifies the divided first resource and the second resource to the second resource.
  • the station enables the primary site to transmit data to the second site on the first resource, and the second site transmits data to the primary site on the second resource, thereby avoiding communication conflicts that occur when the two sites simultaneously transmit data to the other site.
  • the primary site may divide the first resource and the second resource in the time domain, and may also divide the first resource and the second resource in the frequency domain.
  • the primary site is not specifically limited to divide the first resource and The specific way of the second resource.
  • the primary site may schedule the second site to transmit data according to the resource requirements of the two sites in the data transmission process, that is, the primary site adjusts the first resource used by the primary site to transmit data to the second site, and uses A second resource that transmits data to the primary site at the second site.
  • the primary site notifies the second site to receive data transmitted by the primary site on the adjusted first resource and to transmit data to the primary site on the adjusted second resource.
  • the primary site transmits data to the second site on the adjusted first resource, and receives data transmitted by the second site on the adjusted second resource, thereby completing a data transmission task between the primary site and the second site. It should be noted that the second station performs receiving data and transmitting data according to the latest notification message sent by the primary station.
  • the notification message sent by the primary site to the second site may be carried in the trigger frame sent by the primary site to the second site.
  • the trigger frame is updated, and the updated trigger frame is sent to the second site, so that the second site performs receiving and sending data according to the adjusted first resource and the second resource, respectively.
  • FIG. 6 is a schematic structural diagram of a trigger frame sent by the primary station to the second station.
  • the primary site may request the access point associated with the primary site to allocate resources in real time according to the resource requirements of the two sites in the data transmission process, so the access point associated with the primary site may be divided into the primary site and the primary site.
  • the data transmission process of the two sites allocates resources.
  • FIG. 7 is a schematic diagram showing a process of allocating resources once for the data transmission process of the primary site and the second site associated with the access point associated with the primary site.
  • the uplink trigger frame in FIG. 7 is used for the access point associated with the primary site to allocate resources for the primary site and the second site to transmit data to each other;
  • the sending frame is used by the primary station to notify the second station to receive the data transmitted by the primary station on the first resource, and to transmit data to the primary station on the second resource; the uplink resource in FIG. 7 is allocated to the access point associated with the primary site.
  • the primary site is used by the primary site to feed back the resource requirement information during the data transmission process to the associated access point, so that the primary site allocates the resource next according to the resource requirement information; the block acknowledgement frame (Block ACK, BA) in FIG.
  • the access point used to indicate the association of the primary site ends the allocation of resources this time.
  • the access point associated with the primary site can allocate all the resources required for the primary site and the second site to transmit data in multiple times by using the process shown in FIG.
  • the first station can establish an end-to-end bidirectional data transmission link with one or more sites by using the technical solution provided in this embodiment, and the first site acts as a bidirectional data transmission process in each end-to-end. Primary site.
  • the primary site obtains resources for transmitting data by the primary site and the second site from the access point.
  • the problem that communication conflicts between the two sites simultaneously requesting resources in the prior art data transmission process can be avoided.
  • the obtained resource is divided into a first resource and a second resource by using the primary site, where the first resource is used for the primary site to transmit data to the second site, the second resource is used for the second site to transmit data to the primary site, and the primary site is used to transmit data to the primary site;
  • the station sends a notification message for notifying the second station to receive the data transmitted by the primary site on the first resource and transmitting the data to the primary site on the second resource, which can avoid the prior art when the two sites simultaneously transmit data to the other site.
  • a communication conflict problem has occurred.
  • an embodiment of the present invention provides a method for bidirectionally transmitting data in an end-to-end manner in a wireless local area network (WLAN), including:
  • the second station determines a primary site in the end-to-end bidirectional data transmission process between the first site and the second site.
  • the second station receives the primary station and sends a notification message, where the notification message is used to notify the second station to receive data transmitted by the primary station on the first resource and to transmit data to the primary site on the second resource.
  • both the first site and the second site performing end-to-end bidirectional data transmission have end-to-end data transmission capabilities.
  • the S801 second station determines the primary site in the end-to-end bidirectional data transmission process between the first site and the second site, and may have the following two implementation manners:
  • the second site determines the first site as the primary site.
  • the second site determines that the first site has the following three conditions as the primary site:
  • the first site when the first site has an associated access point, and the second site does not have an associated access point, the first site serves as the first site and the second site performs end-to-end bidirectional The primary site during data transfer.
  • the primary site Since the primary site is responsible for obtaining resources for the inter-site transmission of data to the associated access point during data transmission, the primary site must have an associated access point.
  • the first site serves as the first site and The second site performs the primary site during the end-to-end bidirectional data transmission process.
  • the second site may also serve as a primary site in the end-to-end bidirectional data transmission process between the first site and the second site.
  • the first site serves as the first site.
  • the primary site during the end-to-end two-way data transmission with the second site cancels the association with the access point.
  • the access point associated with the second site is higher than the priority of the second site by the access point associated with the second site, and the access point associated with the second site is The instructions to the second site interfere with the data transfer process between the sites.
  • the data transmission between the primary site and the second site is preferentially performed, and the second site is required to cancel the association with the access point.
  • the second site is also used as the primary site in the end-to-end two-way data transmission process between the first site and the second site, and the first site needs to cancel the association with the access point.
  • the second station sends, to the first station, a request message for requesting the first station to establish a data transmission link with the second station, where the request message includes information of the first site as the primary site;
  • the second station receives a response message for the confirmation request message replied by the first station.
  • the second site is notified by the first site to the first site as the primary site.
  • the second site receives the notification message sent by the first site to notify the first site as the primary site, and the second site determines, according to the notification message, the first site as the primary site.
  • the second station receives a request message sent by the first station for requesting the second station to establish a data transmission link with the first station, where the request message includes information of the first site as the primary site;
  • the site replies to the first site with a response message for confirming the request message.
  • the notification message sent by the primary station received by the second station may be carried in the trigger frame sent by the primary station to the second station
  • FIG. 6 is a schematic structural diagram of the trigger frame sent by the primary station received by the second station.
  • the primary site can adjust the first resource and the second resource in real time according to the actual resource requirement information in the data transmission process, and the primary site updates the trigger frame according to the adjusted first resource and the second resource, and after the update, The trigger frame is sent to the second site.
  • the second station transmits data to the primary site on the adjusted second resource according to the latest updated and sent trigger frame of the primary site, and receives data transmitted by the primary site on the adjusted first resource.
  • the second site receives the second site to notify the second site to be used on the first resource. Receiving the data transmitted by the primary site and the notification message for transmitting data to the primary site on the second resource can avoid the communication conflict problem that occurs when the two sites simultaneously transmit data to the opposite site in the prior art.
  • the embodiment of the present invention provides an apparatus for performing end-to-end bidirectional data transmission in a wireless local area network WLAN, including:
  • the primary site determining module 901 is configured to determine a primary site in the end-to-end bidirectional data transmission process between the first site and the second site where the primary site determining module 901 is located;
  • the resource configuration module 902 is configured to acquire, from the access point, the resource used by the primary site determining module 901 to transmit data by the primary site and the second site, and divide the resource into the first resource and the second resource, where One resource is used for the primary site to transmit data to the second site, and the second resource is used for the second site to transmit data to the primary site;
  • the resource notification module 903 is configured to send a notification message to the second station, where the notification message is used to notify the second station to receive the data transmitted by the primary site and the second partitioned by the resource configuration module 902 on the first resource divided by the resource configuration module 902. The data is transferred to the primary site on the resource.
  • the primary site determining module 901 is specifically configured to:
  • the primary site determining module 901 determines that the first site is the primary site.
  • the primary site determining module 901 determines that the first site is the primary site.
  • the primary site determining module 901 determines that the first site is the primary site and instructs the second site to cancel the association with the access point.
  • the resource configuration module 902 is specifically configured to: when acquiring, by the access point, the resource used by the primary site determining module 901 to transmit data by the primary site and the second site, specifically:
  • the resource request message is sent to the access point by using the uplink resource pre-allocated by the access point, where the resource request message is used to request the access point to allocate resources for transmitting data to the primary site and the second site;
  • the resource notification module 903 is specifically configured to:
  • a trigger frame is sent to the second site, and the trigger message carries the notification message.
  • the primary site determining module 901, the resource configuration module 902, and the resource notification module 903 can avoid communication collision problems in the end-to-end bidirectional data transmission process in the prior art communication sites. Specifically, after the primary site determining module 901 determines that the first site serves as the primary site in the end-to-end bidirectional data transmission process between the first site and the second site, the resource configuration module 902 of the primary site acquires the primary site from the access point for the primary site. The resource for transmitting data between the site and the second site can avoid the problem that the two sites simultaneously request resource communication conflicts in the prior art data transmission process.
  • the obtained resource is divided into a first resource and a second resource by using the resource configuration module 902 of the primary site, where the first resource is used for the primary site to transmit data to the second site, and the second resource is used for the second site to the primary site.
  • the station transmits data; the resource notification module 903 of the primary station sends a notification message to the second station for notifying the second station to receive the data transmitted by the primary station on the first resource and transmitting the data to the primary station on the second resource, which can be avoided.
  • communication conflicts occur when two sites simultaneously transmit data to the other site.
  • an embodiment of the present invention provides an apparatus for performing end-to-end bidirectional data transmission in a wireless local area network (WLAN), including:
  • the primary site determining module 1001 is configured to determine a primary site in the end-to-end bidirectional data transmission process between the first site and the second site where the primary site determining module 1001 is located;
  • the resource notification module 1002 is configured to receive a notification message sent by the primary site determined by the primary site determining module 1001, where the notification message is used to notify the second site to receive data transmitted by the primary site on the first resource and to the primary site on the second resource. transfer data.
  • the primary site determining module 1001 is specifically configured to:
  • the primary site determining module 1001 determines that the first site is the primary site; or
  • the primary site determining module 1001 determines that the first site is the primary site.
  • the primary site determining module 1001 determines to cancel the association with the access point and determines the first site as the primary site.
  • the resource notification module 1002 is specifically configured to:
  • the trigger frame sent by the primary station is received, and the trigger message carries the notification message.
  • the resource notification module 1002 receives the primary site and sends the second site to notify the second site.
  • the receiving of the data transmitted by the primary station and the notification message of transmitting the data to the primary site on the second resource on a resource can avoid the communication conflict problem that occurs when the two sites simultaneously transmit data to the opposite site in the prior art.
  • the embodiment of the present invention provides an apparatus for performing end-to-end bidirectional data transmission in a wireless local area network (WLAN), including:
  • the processor 1101 is configured to determine a primary site in an end-to-end bidirectional data transmission process between the first site and the second site where the processor 1101 is located;
  • the transceiver 1102 is configured to acquire, from the access point, a resource for transmitting data by the primary station and the second station determined by the processor 1101;
  • the processor 1101 is further configured to divide the resources acquired by the transceiver 1102 into a first resource and a second resource, where the first resource is used by the primary site to transmit data to the second site, and the second resource is used for the second site to transmit to the primary site. data;
  • the transceiver 1102 is further configured to send a notification message to the second station, where the notification message is used to notify the second station to receive the data transmitted by the primary station and the second resource divided by the processor 1101 on the first resource divided by the processor 1101. Transfer data to the primary site.
  • the processor 1101 when determining, by the processor 1101, the primary site in the end-to-end bidirectional data transmission process between the first site and the second site where the processor 1101 is located, the processor 1101 is specifically configured to:
  • the processor 1101 determines that the first site is the primary site; or
  • the processor 1101 determines that the first site is the primary site.
  • the processor 1101 determines the first site as the primary site, and controls the transceiver 1102 to instruct the second site to cancel the association with the access point.
  • the transceiver 1102 acquires resources for transmitting data by the primary site and the second site determined by the processor 1101, the transceiver 1102 is specifically configured to:
  • the resource request message is sent to the access point by using the uplink resource pre-allocated by the access point, where the resource request message is used to request the access point to allocate resources for transmitting data to the primary site and the second site;
  • the transceiver 1102 sends a notification message to the second site, specifically:
  • a trigger frame is sent to the second site, and the trigger message carries the notification message.
  • the processor 1101 and the transceiver 1102 shown in FIG. 11 the problem of communication conflict in the end-to-end bidirectional data transmission process in the communication partner sites in the prior art can be avoided.
  • the processor 1101 determines that the first site is the primary site in the end-to-end bidirectional data transmission process between the first site and the second site, and obtains, by the transceiver 1102, the transmission from the access point for the primary site and the second site.
  • the data resource can avoid the problem of communication conflicts between the two sites simultaneously requesting resources in the prior art data transmission process.
  • the processor 1101 is configured to divide the resources acquired by the transceiver 1102 into a first resource for transmitting data to the second station, and a second resource for transmitting data to the primary station by the second station;
  • the machine 1102 sends a notification message to the second station for notifying the second station to receive the data transmitted by the primary station on the first resource and transmitting the data to the primary station on the second resource, which can avoid the prior art Communication conflicts that occur when the other site transmits data.
  • an embodiment of the present invention provides an apparatus for performing end-to-end bidirectional data transmission in a wireless local area network (WLAN), including:
  • the processor 1201 is configured to determine a primary site in an end-to-end bidirectional data transmission process between the first site and the second site where the processor 1201 is located;
  • the transceiver 1202 is configured to receive a notification message sent by the primary station determined by the processor 1201, where the notification message is used to notify the second station to receive data transmitted by the primary site on the first resource and transmit data to the primary site on the second resource.
  • the processor 1201 determines the primary site in the end-to-end bidirectional data transmission process between the first site and the second site where the processor 1201 is located, the processor 1201 is specifically configured to:
  • the processor 1201 determines that the first site is the primary site; or
  • the processor 1201 determines that the first site is the primary site.
  • the processor 1201 cancels the association with the access point and determines the first site as the primary site.
  • the transceiver 1202 when receiving the notification message sent by the primary site determined by the processor 1201, the transceiver 1202 is specifically configured to:
  • the trigger frame sent by the primary station is received, and the trigger message carries the notification message.
  • the transceiver 1202 receives, by the transceiver 1202, the second station that is sent by the primary station to notify the second station of the first resource. Receiving the data transmitted by the primary site and the notification message for transmitting data to the primary site on the second resource can avoid the communication conflict problem that occurs when the two sites simultaneously transmit data to the opposite site in the prior art.
  • embodiments of the present invention can 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.

Abstract

本发明提供了一种无线局域网WLAN中端到端双向数据传输的装置及方法，以避免通信双方站点在进行端到端双向数据传输过程中发生通信冲突。本发明方法包括：第一站点确定第一站点与第二站点进行端到端双向数据传输过程中的主站点；主站点从接入点获取用于主站点与第二站点传输数据的资源，并将资源划分为第一资源和第二资源，第一资源用于主站点向第二站点传输数据，第二资源用于第二站点向主站点传输数据；主站点向第二站点发送通知消息，通知消息用于通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据。

Description

WLAN中端到端双向传输数据的装置及方法 技术领域
本发明涉及无线通信领域，尤其涉及一种无线局域网WLAN中端到端双向传输数据的装置及方法。
背景技术
端到端(Device-to-Deceive，D2D)通信技术是一种允许终端之间直接进行通信的技术，它能够增加通信系统频谱效率，降低终端发射功率，在一定程度上解决无线通信系统频谱资源匮乏的问题。
在支持调度模式的无线局域网(Wireless Local Area Network，WLAN)中，站点(Station，STA)之间采用端到端通信时存在一定的弊端。组成端到端通信的两个站点在请求接入点分配用于通信的资源时，由于没有事先沟通，使得通信双方站点采用竞争的方式同时请求接入点分配通信资源，造成两个站点通信冲突。两个站点需要双向传输数据时，由于不确定由哪一方站点先向对方站点传输数据，使得通信双方站点同时向对方站点传输数据，也会造成两个站点通信冲突。这两种情况导致的通信冲突都将会影响到端到端通信系统的效率和性能。
发明内容
本发明实施例提供了一种无线局域网WLAN中端到端双向传输数据的装置及方法，以避免通信双方站点在进行端到端双向数据传输过程中发生通信冲突。
第一方面，本发明实施例提供的一种无线局域网WLAN中端到端双向传输数据的装置，包括：
主站点确定模块，用于确定主站点确定模块所在的第一站点与第二站点进行端到端双向数据传输过程中的主站点；
资源配置模块，用于从接入点获取用于主站点确定模块确定的主站点与第二站点传输数据的资源，并将资源划分为第一资源和第二资源，第一资源用于主站点向第二站点传输数据，第二资源用于第二站点向主站点传输数据；
资源通知模块，用于向第二站点发送通知消息，通知消息用于通知第二站点在资源配置模块划分的第一资源上接收主站点传输的数据以及在资源配置模块划分的第二资源上向主站点传输数据。
结合第一方面，在第一种可能的实现方式中，主站点确定模块具体用于：
若第一站点存在关联的接入点且第二站点不存在关联的接入点时，主站点确定模块确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点相同时，主站点确定模块确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点不相同时，主站点确定模块确定第一站点作为主站点，并指示第二站点取消与接入点的关联。
结合第一方面，在第二种可能的实现方式中，资源配置模块在从接入点获取用于主站点确定模块确定的主站点与第二站点传输数据的资源时，具体用于：
利用接入点预先分配的上行资源向接入点发送资源请求消息，资源请求消息用于请求接入点为主站点与第二站点分配传输数据的资源；
接收接入点分配的用于主站点与第二站点传输数据的资源。
结合第一方面，在第三种可能的实现方式中，资源通知模块具体用于：
向第二站点发送触发帧，触发帧中携带通知消息。
第二方面，本发明实施例提供的一种无线局域网WLAN中端到端双向数据传输的装置，包括：
主站点确定模块，用于确定第一站点与主站点确定模块所在的第二站点进行端到端双向数据传输过程中的主站点；
资源通知模块，用于接收主站点确定模块确定的主站点发送的通知消息，通知消息用于通知第二站点在第一资源上接收主站点传输的数据以及在第二 资源上向主站点传输数据。
结合第二方面，在第一种可能的实现方式中，主站点确定模块具体用于：
若第一站点存在关联的接入点且第二站点不存在关联的接入点时，主站点确定模块确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点相同时，主站点确定模块确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点不相同时，主站点确定模块确定取消与接入点的关联，并确定第一站点作为主站点。
结合第二方面，在第二种可能的实现方式中，资源通知模块具体用于：
接收主站点发送的触发帧，触发帧中携带通知消息。
第三方面，本发明实施例提供的一种无线局域网WLAN中端到端双向数据传输的装置，包括：
处理器，用于确定处理器所在的第一站点与第二站点进行端到端双向数据传输过程中的主站点；
收发机，用于从接入点获取用于处理器确定的主站点与第二站点传输数据的资源；
处理器，还用于将收发机获取的资源划分为第一资源和第二资源，第一资源用于主站点向第二站点传输数据，第二资源用于第二站点向主站点传输数据；
收发机，还用于向第二站点发送通知消息，通知消息用于通知第二站点在处理器划分的第一资源上接收主站点传输的数据以及在处理器划分的第二资源上向主站点传输数据。
结合第三方面，在第一种可能的实现方式中，处理器在确定处理器所在的第一站点与第二站点进行端到端双向数据传输过程中的主站点时，具体用于：
若第一站点存在关联的接入点且第二站点不存在关联的接入点时，处理器确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点相同时，处理器确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点不相同时，处理器确定第一站点作为主站点，并控制收发机指示第二站点取消与接入点的关联。
结合第三方面，在第二种可能的实现方式中，收发机从接入点获取用于处理器确定的主站点与第二站点传输数据的资源时，具体用于：
利用接入点预先分配的上行资源向接入点发送资源请求消息，资源请求消息用于请求接入点为主站点与第二站点分配传输数据的资源；
接收接入点分配的用于主站点与第二站点传输数据的资源。
结合第三方面，在第三种可能的实现方式中，收发机向第二站点发送通知消息时，具体用于：
向第二站点发送触发帧，触发帧中携带通知消息。
第四方面，本发明实施例提供的一种无线局域网WLAN中端到端双向数据传输的装置，包括：
处理器，用于确定第一站点与处理器所在的第二站点进行端到端双向数据传输过程中的主站点；
收发机，用于接收处理器确定的主站点发送的通知消息，通知消息用于通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据。
结合第四方面，在第一种可能的实现方式中，处理器确定第一站点与处理器所在的第二站点进行端到端双向数据传输过程中的主站点时，具体用于：
若第一站点存在关联的接入点且第二站点不存在关联的接入点时，处理器确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点相同时，处理器确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点不相同时，处理器取消与接入点的关联，并确定第一站点作为主站点。
结合第四方面，在第二种可能的实现方式中，收发机接收处理器确定的主站点发送的通知消息时，具体用于：
接收主站点发送的触发帧，触发帧中携带通知消息。
第五方面，本发明实施例提供的一种无线局域网WLAN中端到端双向数据传输的方法，包括：
第一站点确定第一站点与第二站点进行端到端双向数据传输过程中的主站点；
主站点从接入点获取用于主站点与第二站点传输数据的资源，并将资源划分为第一资源和第二资源，第一资源用于主站点向第二站点传输数据，第二资源用于第二站点向主站点传输数据；
主站点向第二站点发送通知消息，通知消息用于通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据。
结合第五方面，在第一种可能的实现方式中，第一站点确定第一站点与第二站点进行端到端双向数据传输过程中的主站点，包括：
若第一站点存在关联的接入点且第二站点不存在关联的接入点时，第一站点确定自身作为主站点；或者
若第一站点和第二站点关联的接入点相同时，第一站点确定自身作为主站点；或者
若第一站点和第二站点关联的接入点不相同时，第一站点确定自身作为主站点，并指示第二站点取消与接入点的关联。
结合第五方面，在第二种可能的实现方式中，主站点从接入点获取用于主站点与第二站点传输数据的资源，包括：
主站点利用接入点预先分配的上行资源向接入点发送资源请求消息，资源请求消息用于请求接入点为主站点与第二站点分配传输数据的资源；
主站点接收接入点分配的用于主站点与第二站点传输数据的资源。
结合第五方面，在第三种可能的实现方式中，主站点向第二站点发送通知消息，包括：
主站点向第二站点发送触发帧，触发帧中携带通知消息。
第六方面，本发明实施例提供的一种无线局域网WLAN中端到端双向数据传输的方法，包括：
第二站点确定第一站点与第二站点进行端到端双向数据传输过程中的主站点；
第二站点接收主站点发送的通知消息，通知消息用于通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据。
结合第六方面，在第一种可能的实现方式中，第二站点确定第一站点与第二站点进行端到端双向数据传输过程中的主站点，包括：
若第一站点存在关联的接入点且第二站点不存在关联的接入点时，第二站点确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点相同时，第二站点确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点不相同时，第二站点取消与接入点的关联，并确定第一站点作为主站点。
结合第六方面，在第二种可能的实现方式中，第二站点接收主站点发送的通知消息，包括：
第二站点接收主站点发送的触发帧，触发帧中携带通知消息。
本发明实施例中，第一站点确定第一站点与第二站点进行端到端双向数据传输过程中的主站后，通过主站点从接入点获取用于主站点与第二站点传输数据的资源，可以避免采用现有技术的端到端双向数据传输过程中双方站点同时请求资源发生通信冲突的问题。通过主站点将获取的资源划分为第一资源和第二资源，第一资源用于主站点向第二站点传输数据，第二资源用于第二站点向主站点传输数据；主站点通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据，可以避免现有技术中由于双方站点同时向对方站点传输数据时发生的通信冲突问题。
附图说明
图1为本发明实施例提供的一种无线局域网WLAN中端到端双向传输数据的方法流程示意图；
图2为本发明实施例提供的一种第一站点确定主站点示意图；
图3为本发明实施例提供的一种第一站点确定主站点示意图；
图4为本发明实施例提供的一种第一站点确定主站点示意图；
图5为本发明实施例提供的接入点为主站点和第二站点之间传输数据分配的资源示意图；
图6为本发明实施例提供的主站点向第二站点发送的触发帧的结构示意图；
图7为本发明实施例提供的接入点为主站点和第二站点的数据传输过程分配一次资源的过程示意图；
图8为本发明实施例提供的一种无线局域网WLAN中端到端双向传输数据的方法流程示意图；
图9为本发明实施例提供的一种无线局域网WLAN中端到端双向传输数据的装置结构示意图；
图10为本发明实施例提供的一种无线局域网WLAN中端到端双向传输数据的装置结构示意图；
图11为本发明实施例提供的一种无线局域网WLAN中端到端双向传输数据的装置结构示意图；
图12为本发明实施例提供的一种无线局域网WLAN中端到端双向传输数据的装置结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而 不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的技术方案适用于无线局域网WLAN中端到端双向数据传输的通信系统。端到端通信技术是一种允许终端(本发明中指站点)之间直接进行通信的技术，它能够增加通信系统频谱效率，降低终端发射功率，在一定程度上解决无线通信系统频谱资源匮乏的问题。进行端到端双向数据传输的两个站点可以互相向对方站点传输数据。
实施例一
如图1所示，本发明实施例提供了一种无线局域网WLAN中端到端双向传输数据的方法，包括：
S101、第一站点确定第一站点与第二站点进行端到端双向数据传输过程中的主站点；
S102、主站点从接入点获取用于主站点与第二站点传输数据的资源，并将资源划分为第一资源和第二资源，第一资源用于主站点向第二站点传输数据，第二资源用于第二站点向主站点传输数据；
S103、主站点向第二站点发送通知消息，通知消息用于通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据。
本实施例中，进行端到端双向数据传输的第一站点和第二站点都具有端到端数据传输能力。
本实施例中，S101第一站点确定第一站点与第二站点进行端到端双向数据传输过程中的主站点，可以有以下两种实现方式：
第一种实现方式，第一站点确定自身作为主站点。
第一站点确定自身作为主站点存在以下三种情况：
第一种情况，如图2所示，第一站点存在关联的接入点，且第二站点不存在关联的接入点时，第一站点作为第一站点与第二站点进行端到端双向数据传输过程中的主站点。
由于数据传输过程中主站点负责向关联的接入点获取用于站点间传输数 据的资源，因此主站点必须存在关联的接入点。
第二种情况，如图3所示，第一站点和第二站点均存在关联的接入点，且第一站点和第二站点关联的接入点相同时，第一站点作为第一站点与第二站点进行端到端双向数据传输过程中的主站点。
可选的，第二站点也可以作为第一站点与第二站点进行端到端双向数据传输过程中的主站点。
第三种情况，如图4所示，第一站点和第二站点均存在关联的接入点，且第一站点和第二站点关联的接入点不相同时，第一站点作为第一站点与第二站点进行端到端双向数据传输过程中的主站点，第二站点取消与接入点的关联。
在端到端双向数据传输过程中，由于第二站点关联的接入点对第二站点的指令的优先级高于主站点对第二站点的指令的优先级，第二站点关联的接入点对第二站点的指令会对站点间的数据传输过程产生干扰。为防止产生这种干扰，使得优先执行主站点与第二站点间的数据传输，则需要第二站点取消与接入点的关联。
可选的，第二站点也可以作为第一站点与第二站点进行端到端双向数据传输过程中的主站点，此时需要第一站点取消与接入点的关联。
可选的，第一站点向第二站点发送用于请求第二站点建立与第一站点之间的数据传输链路的请求消息，请求消息中包括第一站点作为主站点的信息；第一站点接收第二站点回复的用于确认请求消息的响应消息。
第二种实现方式，第一站点被第二站点告知第一站点作为主站点。
具体的，第一站点接收第二站点发送的用于通知第一站点作为主站点的通知消息，第一站点根据该通知消息确定自身作为主站点。
可选的，第一站点接收第二站点发送的用于请求第一站点建立与第二站点之间的数据传输链路的请求消息，请求消息中包括第一站点作为主站点的信息；第一站点向第二站点回复用于确认请求消息的响应消息。
本实施例中，S102中主站点从接入点获取用于主站点与第二站点传输数 据的资源的方法包括：
主站点利用接入点预先分配的上行资源向接入点发送资源请求消息，资源请求消息用于请求接入点为主站点与第二站点分配传输数据的资源；
主站点接收接入点分配的用于主站点与第二站点传输数据的资源。
可选的，主站点发送的资源请求消息中包括资源需求信息，接入点根据该资源需求信息分配用于主站点与第二站点之间数据传输的资源。
其中，资源需求信息可以包含双方站点用于向对方站点传输数据所需的资源量，也可以包含任意一方站点用于向对方站点传输数据所需的资源量。
图5所示为主站点关联的接入点为主站点和第二站点之间传输数据分配的资源(图5中用平行资源表示)示意图，图中包括平行资源的四种不同形式，每一行对应一种平行资源形式。其中，第一行表示平行资源与上行资源时域相同、频域不同，平行资源与下行资源时域和频域均不同；第二行表示平行资源与下行资源时域相同、频域不同，平行资源与上行资源时域和频域均不同；第三行表示平行资源与上行资源频域相同、时域不同，平行资源与下行资源时域和频域均不同；第四行表示平行资源与下行资源频域相同、时域不同，平行资源与上行资源时域和频域均不同。
现有技术中，由于组成端到端通信的双方站点在数据传输过程中不需要经过接入点，接入站点不能获知通信双方站点的实际通信状况，因此双方站点用于向对方站点传输数据所用的资源是接入点预先分配的，这样接入点只能根据经验预先分配资源，因此容易造成接入点分配的资源量不准确。此外，在数据传输过程中双方站点不能及时地根据实际资源需求向接入点请求分配资源，导致站点请求分配资源的效率和接入点分配资源的效率都比较低。
在本实施例中，主站点可以利用主站点关联的接入点分配的上行资源向该接入点上报数据传输过程中双方站点的资源需求，进而主站点关联的接入点可以根据该资源需求信息为主站点和第二站点分配资源，而第二站点不参与资源需求上报过程，这样可以避免数据传输过程中双方站点同时请求资源发生通信冲突的问题。
本实施例中，主站点对接入点分配的用于双方站点向对方站点传输数据的资源进行划分成第一资源和第二资源，并将划分的第一资源和第二资源通知给第二站点，使得主站点在第一资源上向第二站点传输数据，第二站点在第二资源上向主站点传输数据，这样可以避免由于双方站点同时向对方站点传输数据时发生的通信冲突问题。需要说明的是，主站点可以在时域上划分第一资源和第二资源，也可以在频域上划分第一资源和第二资源，本实施例中不具体限定主站点划分第一资源和第二资源的具体方式。
本实施例中，主站点可以根据数据传输过程中双方站点的资源需求实时且合理地调度第二站点传输数据，即主站点调整用于主站点向第二站点传输数据的第一资源，以及用于第二站点向主站点传输数据的第二资源。
主站点通知第二站点在调整后的第一资源上接收主站点传输的数据以及在调整后的第二资源上向主站点传输数据。
主站点在调整后的第一资源上向第二站点传输数据，并接收第二站点在调整后的第二资源上传输的数据，从而完成主站点与第二站点之间的数据传输任务。需要说明的是，第二站点根据主站点发送的最新的通知消息执行接收数据和发送数据。
本实施例中，主站点向第二站点发送的通知消息可以携带在主站点向第二站点发送触发帧中。主站点调整第一资源和第二资源后更新触发帧，并将更新后的触发帧发送给第二站点，以便第二站点分别根据调整后的第一资源和第二资源执行接收数据和发送数据。图6所示为主站点向第二站点发送的触发帧的结构示意图。
在本实施例中，由于主站点可以根据数据传输过程中双方站点的资源需求实时地请求主站点关联的接入点分配资源，因此主站点关联的接入点可以分多次为主站点和第二站点的数据传输过程分配资源。
图7所示为主站点关联的接入点为主站点和第二站点的数据传输过程分配一次资源的过程示意图。图7中的上行触发帧用于主站点关联的接入点本次分配资源，该资源用于主站点与第二站点之间互相传输数据；图7中的触 发帧用于主站点通知第二站点在第一资源上接收主站点传输的数据，并在第二资源上向主站点传输数据；图7中的上行资源是主站点关联的接入点分配给主站点，用于主站点向其关联的接入点反馈数据传输过程中资源需求信息的，以便主站点根据该资源需求信息下一次分配资源；图7中的块确认帧(Block ACK，BA)用于指示主站点关联的接入点本次分配资源结束。主站点关联的接入点利用图7所示的过程可以分多次分配主站点与第二站点传输数据过程中所需的所有资源。
本实施例中，第一站点可以通过本实施例提供的技术方案同时与一个或多个站点建立端到端双向数据传输链路，第一站点在每个端到端双向数据传输过程中均作为主站点。
本实施例中，第一站点确定第一站点与第二站点进行端到端双向数据传输过程中的主站点后，通过主站点从接入点获取用于主站点与第二站点传输数据的资源，可以避免现有技术数据传输过程中双方站点同时请求资源发生通信冲突的问题。通过主站点将获取的资源划分为第一资源和第二资源，第一资源用于主站点向第二站点传输数据，第二资源用于第二站点向主站点传输数据；主站点向第二站点发送用于通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据的通知消息，可以避免现有技术中由于双方站点同时向对方站点传输数据时发生的通信冲突问题。
实施例二
如图8所示，本发明实施例提供了一种无线局域网WLAN中端到端双向传输数据的方法，包括：
S801、第二站点确定第一站点与第二站点进行端到端双向数据传输过程中的主站点；
S802、第二站点接收主站点发送通知消息，通知消息用于通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据。
本实施例中，进行端到端双向数据传输的第一站点和第二站点都具有端到端数据传输能力。
本实施例中，S801第二站点确定第一站点与第二站点进行端到端双向数据传输过程中的主站点，可以有以下两种实现方式：
第一种实现方式，第二站点确定第一站点作为主站点。
第二站点确定第一站点作为主站点存在以下三种情况：
第一种情况，如图2所示，第一站点存在关联的接入点，且第二站点不存在关联的接入点时，第一站点作为第一站点与第二站点进行端到端双向数据传输过程中的主站点。
由于数据传输过程中主站点负责向关联的接入点获取用于站点间传输数据的资源，因此主站点必须存在关联的接入点。
第二种情况，如图3所示，第一站点和第二站点均存在关联的接入点，且第一站点和第二站点关联的接入点相同时，第一站点作为第一站点与第二站点进行端到端双向数据传输过程中的主站点。
可选的，第二站点也可以作为第一站点与第二站点进行端到端双向数据传输过程中的主站点。
第三种情况，如图4所示，第一站点和第二站点均存在关联的接入点，且第一站点和第二站点关联的接入点不相同时，第一站点作为第一站点与第二站点进行端到端双向数据传输过程中的主站点，第二站点取消与接入点的关联。
在端到端双向数据传输过程中，由于第二站点关联的接入点对第二站点的指令的优先级高于主站点对第二站点的指令的优先级，第二站点关联的接入点对第二站点的指令会对站点间的数据传输过程产生干扰。为防止产生这种干扰，使得优先执行主站点与第二站点间的数据传输，则需要第二站点取消与接入点的关联。
可选的，第二站点也可以作为第一站点与第二站点进行端到端双向数据传输过程中的主站点，此时需要第一站点取消与接入点的关联。
可选的，第二站点向第一站点发送用于请求第一站点建立与第二站点之间的数据传输链路的请求消息，请求消息中包括第一站点作为主站点的信息； 第二站点接收第一站点回复的用于确认请求消息的响应消息。
第二种实现方式，第二站点被第一站点告知第一站点作为主站点。
具体的，第二站点接收第一站点发送的用于通知第一站点作为主站点的通知消息，第二站点根据该通知消息确定第一站点作为主站点。
可选的，第二站点接收第一站点发送的用于请求第二站点建立与第一站点之间的数据传输链路的请求消息，请求消息中包括第一站点作为主站点的信息；第二站点向第一站点回复用于确认请求消息的响应消息。
本实施例中，第二站点接收的主站点发送的通知消息可以携带在主站点向第二站点发送触发帧中，图6所示为第二站点接收的主站点发送的触发帧的结构示意图。
本实施例中，由于主站点可以根据数据传输过程中实际的资源需求信息实时调整第一资源和第二资源，主站点根据调整后的第一资源和第二资源更新触发帧，并将更新后的触发帧发送给第二站点。第二站点根据主站点最新更新并发送的触发帧，分别在调整后的第二资源上向主站点传输数据，并接收主站点在调整后的第一资源上传输的数据。
本实施例中，第二站点确定第一站点与第二站点进行端到端双向数据传输过程中的主站点后，通过第二站点接收主站点发送的用于通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据的通知消息，可以避免现有技术中由于双方站点同时向对方站点传输数据时发生的通信冲突问题。
实施例三
与实施例一对应的，如图9所示，本发明实施例提供了一种无线局域网WLAN中端到端双向数据传输的装置，包括：
主站点确定模块901，用于确定主站点确定模块901所在的第一站点与第二站点进行端到端双向数据传输过程中的主站点；
资源配置模块902，用于从接入点获取用于主站点确定模块901确定的主站点与第二站点传输数据的资源，并将资源划分为第一资源和第二资源，第 一资源用于主站点向第二站点传输数据，第二资源用于第二站点向主站点传输数据；
资源通知模块903，用于向第二站点发送通知消息，通知消息用于通知第二站点在资源配置模块902划分的第一资源上接收主站点传输的数据以及在资源配置模块902划分的第二资源上向主站点传输数据。
可选的，主站点确定模块901具体用于：
若第一站点存在关联的接入点且第二站点不存在关联的接入点时，主站点确定模块901确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点相同时，主站点确定模块901确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点不相同时，主站点确定模块901确定第一站点作为主站点，并指示第二站点取消与接入点的关联。
可选的，资源配置模块902在从接入点获取用于主站点确定模块901确定的主站点与第二站点传输数据的资源时，具体用于：
利用接入点预先分配的上行资源向接入点发送资源请求消息，资源请求消息用于请求接入点为主站点与第二站点分配传输数据的资源；
接收接入点分配的用于主站点与第二站点传输数据的资源。
可选的，资源通知模块903具体用于：
向第二站点发送触发帧，触发帧中携带通知消息。
本实施例中，通过主站点确定模块901、资源配置模块902以及资源通知模块903，可以避免现有技术中通信双方站点在进行端到端双向数据传输过程中发生通信冲突问题。具体的，主站点确定模块901确定第一站点作为第一站点与第二站点进行端到端双向数据传输过程中的主站点后，通过主站点的资源配置模块902从接入点获取用于主站点与第二站点传输数据的资源，可以避免现有技术数据传输过程中双方站点同时请求资源发生通信冲突的问题。通过主站点的资源配置模块902将获取的资源划分为第一资源和第二资源，第一资源用于主站点向第二站点传输数据，第二资源用于第二站点向主 站点传输数据；主站点的资源通知模块903向第二站点发送用于通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据的通知消息，可以避免现有技术中由于双方站点同时向对方站点传输数据时发生的通信冲突问题。
实施例四
与实施例二对应的，如图10所示，本发明实施例提供了一种无线局域网WLAN中端到端双向数据传输的装置，包括：
主站点确定模块1001，用于确定第一站点与主站点确定模块1001所在的第二站点进行端到端双向数据传输过程中的主站点；
资源通知模块1002，用于接收主站点确定模块1001确定的主站点发送的通知消息，通知消息用于通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据。
可选的，主站点确定模块1001具体用于：
若第一站点存在关联的接入点且第二站点不存在关联的接入点时，主站点确定模块1001确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点相同时，主站点确定模块1001确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点不相同时，主站点确定模块1001确定取消与接入点的关联，并确定第一站点作为主站点。
可选的，资源通知模块1002具体用于：
接收主站点发送的触发帧，触发帧中携带通知消息。
本实施例中，主站点确定模块1001确定第一站点与第二站点进行端到端双向数据传输过程中的主站点后，通过资源通知模块1002接收主站点发送的用于通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据的通知消息，可以避免现有技术中由于双方站点同时向对方站点传输数据时发生的通信冲突问题。
实施例五
与实施例一对应的，如图11所示，本发明实施例提供了一种无线局域网WLAN中端到端双向数据传输的装置，包括：
处理器1101，用于确定处理器1101所在的第一站点与第二站点进行端到端双向数据传输过程中的主站点；
收发机1102，用于从接入点获取用于处理器1101确定的主站点与第二站点传输数据的资源；
处理器1101，还用于将收发机1102获取的资源划分为第一资源和第二资源，第一资源用于主站点向第二站点传输数据，第二资源用于第二站点向主站点传输数据；
收发机1102，还用于向第二站点发送通知消息，通知消息用于通知第二站点在处理器1101划分的第一资源上接收主站点传输的数据以及在处理器1101划分的第二资源上向主站点传输数据。
可选的，处理器1101在确定处理器1101所在的第一站点与第二站点进行端到端双向数据传输过程中的主站点时，具体用于：
若第一站点存在关联的接入点且第二站点不存在关联的接入点时，处理器1101确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点相同时，处理器1101确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点不相同时，处理器1101确定第一站点作为主站点，并控制收发机1102指示第二站点取消与接入点的关联。
可选的，收发机1102从接入点获取用于处理器1101确定的主站点与第二站点传输数据的资源时，具体用于：
利用接入点预先分配的上行资源向接入点发送资源请求消息，资源请求消息用于请求接入点为主站点与第二站点分配传输数据的资源；
接收接入点分配的用于主站点与第二站点传输数据的资源。
可选的，收发机1102向第二站点发送通知消息时，具体用于：
向第二站点发送触发帧，触发帧中携带通知消息。
本实施例中，通过图11所示的处理器1101和收发机1102，可以避免现有技术中通信双方站点在进行端到端双向数据传输过程中发生通信冲突问题。具体的，处理器1101确定第一站点作为第一站点与第二站点进行端到端双向数据传输过程中的主站点后，通过收发机1102从接入点获取用于主站点与第二站点传输数据的资源，可以避免现有技术数据传输过程中双方站点同时请求资源发生通信冲突的问题。通过处理器1101将收发机1102获取的资源划分为第一资源和第二资源，第一资源用于主站点向第二站点传输数据，第二资源用于第二站点向主站点传输数据；收发机1102向第二站点发送用于通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据的通知消息，可以避免现有技术中由于双方站点同时向对方站点传输数据时发生的通信冲突问题。
实施例六
与实施例二对应的，如图12所示，本发明实施例提供了一种无线局域网WLAN中端到端双向数据传输的装置，包括：
处理器1201，用于确定第一站点与处理器1201所在的第二站点进行端到端双向数据传输过程中的主站点；
收发机1202，用于接收处理器1201确定的主站点发送的通知消息，通知消息用于通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据。
可选的，处理器1201确定第一站点与处理器1201所在的第二站点进行端到端双向数据传输过程中的主站点时，具体用于：
若第一站点存在关联的接入点且第二站点不存在关联的接入点时，处理器1201确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点相同时，处理器1201确定第一站点作为主站点；或者
若第一站点和第二站点关联的接入点不相同时，处理器1201取消与接入点的关联，并确定第一站点作为主站点。
可选的，收发机1202接收处理器1201确定的主站点发送的通知消息时，具体用于：
接收主站点发送的触发帧，触发帧中携带通知消息。
本实施例中，处理器1201确定第一站点与第二站点进行端到端双向数据传输过程中的主站点后，通过收发机1202接收主站点发送的用于通知第二站点在第一资源上接收主站点传输的数据以及在第二资源上向主站点传输数据的通知消息，可以避免现有技术中由于双方站点同时向对方站点传输数据时发生的通信冲突问题。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的 处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样，倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (14)

  1. 一种无线局域网WLAN中端到端双向数据传输的装置，其特征在于，包括：
    主站点确定模块，用于确定所述主站点确定模块所在的第一站点与第二站点进行端到端双向数据传输过程中的主站点；
    资源配置模块，用于从接入点获取用于所述主站点确定模块确定的所述主站点与所述第二站点传输数据的资源，并将所述资源划分为第一资源和第二资源，所述第一资源用于所述主站点向所述第二站点传输数据，所述第二资源用于所述第二站点向所述主站点传输数据；
    资源通知模块，用于向所述第二站点发送通知消息，所述通知消息用于通知所述第二站点在所述资源配置模块划分的所述第一资源上接收所述主站点传输的数据以及在所述资源配置模块划分的所述第二资源上向所述主站点传输数据。
  2. 如权利要求1所述的装置，其特征在于，所述主站点确定模块具体用于：
    若所述第一站点存在关联的接入点且所述第二站点不存在关联的接入点时，所述主站点确定模块确定所述第一站点作为所述主站点；或者
    若所述第一站点和所述第二站点关联的接入点相同时，所述主站点确定模块确定所述第一站点作为所述主站点；或者
    若所述第一站点和所述第二站点关联的接入点不相同时，所述主站点确定模块确定所述第一站点作为所述主站点，并指示所述第二站点取消与接入点的关联。
  3. 如权利要求1所述的装置，其特征在于，所述资源配置模块在从接入点获取用于所述主站点确定模块确定的所述主站点与所述第二站点传输数据的资源时，具体用于：
    利用接入点预先分配的上行资源向所述接入点发送资源请求消息，所述 资源请求消息用于请求所述接入点为所述主站点与所述第二站点分配传输数据的资源；
    接收所述接入点分配的用于所述主站点与所述第二站点传输数据的资源。
  4. 如权利要求1所述的装置，其特征在于，所述资源通知模块具体用于：
    向所述第二站点发送触发帧，所述触发帧中携带所述通知消息。
  5. 一种无线局域网WLAN中端到端双向数据传输的装置，其特征在于，包括：
    主站点确定模块，用于确定第一站点与所述主站点确定模块所在的第二站点进行端到端双向数据传输过程中的主站点；
    资源通知模块，用于接收所述主站点确定模块确定的所述主站点发送的通知消息，所述通知消息用于通知所述第二站点在第一资源上接收所述主站点传输的数据以及在第二资源上向所述主站点传输数据。
  6. 如权利要求5所述的装置，其特征在于，所述主站点确定模块具体用于：
    若所述第一站点存在关联的接入点且所述第二站点不存在关联的接入点时，所述主站点确定模块确定所述第一站点作为所述主站点；或者
    若所述第一站点和所述第二站点关联的接入点相同时，所述主站点确定模块确定所述第一站点作为所述主站点；或者
    若所述第一站点和所述第二站点关联的接入点不相同时，所述主站点确定模块确定取消与接入点的关联，并确定所述第一站点作为所述主站点。
  7. 如权利要求5所述的装置，其特征在于，所述资源通知模块具体用于：
    接收所述主站点发送的触发帧，所述触发帧中携带所述通知消息。
  8. 一种无线局域网WLAN中端到端双向数据传输的方法，其特征在于，包括：
    第一站点确定所述第一站点与第二站点进行端到端双向数据传输过程中的主站点；
    所述主站点从接入点获取用于所述主站点与所述第二站点传输数据的资源，并将所述资源划分为第一资源和第二资源，所述第一资源用于所述主站点向所述第二站点传输数据，所述第二资源用于所述第二站点向所述主站点传输数据；
    所述主站点向所述第二站点发送通知消息，所述通知消息用于通知所述第二站点在所述第一资源上接收所述主站点传输的数据以及在所述第二资源上向所述主站点传输数据。
  9. 如权利要求8所述的方法，其特征在于，所述第一站点确定所述第一站点与第二站点进行端到端双向数据传输过程中的主站点，包括：
    若所述第一站点存在关联的接入点且所述第二站点不存在关联的接入点时，所述第一站点确定自身作为所述主站点；或者
    若所述第一站点和所述第二站点关联的接入点相同时，所述第一站点确定自身作为所述主站点；或者
    若所述第一站点和所述第二站点关联的接入点不相同时，所述第一站点确定自身作为所述主站点，并指示所述第二站点取消与接入点的关联。
  10. 如权利要求8所述的方法，其特征在于，所述主站点从接入点获取用于所述主站点与所述第二站点传输数据的资源，包括：
    所述主站点利用接入点预先分配的上行资源向所述接入点发送资源请求消息，所述资源请求消息用于请求所述接入点为所述主站点与所述第二站点分配传输数据的资源；
    所述主站点接收所述接入点分配的用于所述主站点与所述第二站点传输数据的资源。
  11. 如权利要求8所述的方法，其特征在于，所述主站点向所述第二站点发送通知消息，包括：
    所述主站点向所述第二站点发送触发帧，所述触发帧中携带所述通知消息。
  12. 一种无线局域网WLAN中端到端双向数据传输的方法，其特征在于， 包括：
    第二站点确定第一站点与所述第二站点进行端到端双向数据传输过程中的主站点；
    所述第二站点接收所述主站点发送的通知消息，所述通知消息用于通知所述第二站点在第一资源上接收所述主站点传输的数据以及在第二资源上向所述主站点传输数据。
  13. 如权利要求12所述的方法，其特征在于，所述第二站点确定第一站点与所述第二站点进行端到端双向数据传输过程中的主站点，包括：
    若所述第一站点存在关联的接入点且所述第二站点不存在关联的接入点时，所述第二站点确定所述第一站点作为所述主站点；或者
    若所述第一站点和所述第二站点关联的接入点相同时，所述第二站点确定所述第一站点作为所述主站点；或者
    若所述第一站点和所述第二站点关联的接入点不相同时，所述第二站点取消与接入点的关联，并确定所述第一站点作为所述主站点。
  14. 如权利要求12所述的方法，其特征在于，所述第二站点接收所述主站点发送的通知消息，包括：
    所述第二站点接收所述主站点发送的触发帧，所述触发帧中携带所述通知消息。
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