WO2014134954A1 - 业务数据的传输处理、传输方法及装置 - Google Patents
业务数据的传输处理、传输方法及装置 Download PDFInfo
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- WO2014134954A1 WO2014134954A1 PCT/CN2013/090327 CN2013090327W WO2014134954A1 WO 2014134954 A1 WO2014134954 A1 WO 2014134954A1 CN 2013090327 W CN2013090327 W CN 2013090327W WO 2014134954 A1 WO2014134954 A1 WO 2014134954A1
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- service data
- notification information
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/50—Connection management for emergency connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Definitions
- the present invention relates to the field of communications, and in particular, to a method and device for transmitting and processing service data.
- WLAN wireless local area network
- IEEE802.il group of the Institute of Electrical and Electronics Engineers has defined a series of standard WLAN technologies such as 802.11a, 802.11b, 802.11g, etc., followed by other task groups, which are dedicated to the development of existing 802.11. Specification of technical improvements.
- the 802.11 ah task force mainly develops WLAN network air interface standards using unlicensed bands below the 1 GHz band to support new network applications such as smart grids and sensor networks.
- the basic architecture of a WLAN refers to a basic service set (BSS), which includes an access point (AP) and a plurality of stations (Stations, STAs) associated with the AP.
- BSS basic service set
- 802.11 defines two modes of operation: Distributed Coordination Function (DCF) and Point Coordination Function (PCF), and improvements for these two modes of operation: Enhanced Distributed Coordination Access (Enhanced Distributed Channel Access, referred to as EDCA) and Hybrid Coordination Function Controlled Channel Access (HCCA).
- DCF is the most basic operation mode, and multiple stations share wireless channels by using Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA).
- EDCA is an enhanced mode of operation.
- the CSMA/CA mechanism Based on the CSMA/CA mechanism, it supports multiple different priority queues to share wireless channels, and transmits data of each priority queue in units of Transmission Opportunity (TXOP).
- TXOP Transmission Opportunity
- the existing power-saving mode means that the terminal entering the power-saving mode periodically wakes up to monitor whether the downlink data in the Beacon frame is to be sent.
- the wireless LAN terminal can use a longer power saving mode, that is, when the current transmission is completed, and no other local data is to be transmitted, the terminal turns off the transceiver module of the wireless local area network and enters a sleep state until new local data is needed.
- the send or sleep time reaches a predetermined value.
- WLAN is mainly used for smart meter reading and transmission.
- Sense network In some applications, such as fire alarm and gas monitoring applications, in order to save power, the terminal is in a power saving mode most of the time; when abnormal data occurs, the sensor terminal needs to be issued as soon as possible.
- the terminal entering the power saving mode will first listen to the wireless channel after the arrival of the new local data, and send a radio frame to the AP after detecting that the signal can be sent, and notify the AP. There is uplink data to send.
- the AP allocates a time slot for uplink transmission to the terminal according to the uplink data indication carried by the radio frame.
- the data that the terminal needs to send may be a normal service, or an emergency service such as an abnormal alarm.
- the AP cannot distinguish the priority of the burst data, and can only arrange according to the order of sending the request, which may cause delay in sending the emergency burst data. .
- an effective solution has not yet been proposed.
- the present invention provides a service data transmission in the related art, in the case of an emergency service data transmission, a technical problem such as a delay in the transmission of an emergency burst data caused by an AP not being able to identify the priority of the burst data.
- a method for processing a service data includes: acquiring service data of a specified service type that the station needs to send; and sending notification information to the AP of the wireless local area network, where The notification information is used to indicate that the AP preferentially allocates a wireless transmission resource for the service data of the specified service type.
- the sending the notification information to the AP comprises: determining a transmission channel for transmitting the service data of the specified service type; detecting a channel state of the transmission channel; and transmitting the notification information to the AP when detecting that the channel state is idle.
- sending the notification information to the AP includes: sending the notification information to the AP when detecting that the channel state is idle within a specified time period and/or idle within a random time period.
- the sending the notification information to the AP comprises: receiving a radio frame sent by the AP; and sending the notification information to the AP after the first interframe interval after receiving the radio frame.
- the sending the notification information to the AP comprises: acquiring a designated time slot of the AP; and sending the notification information to the AP after the designated time slot.
- the method includes: receiving the response information from the AP, where the response information is used to indicate that the station sends the service data of the specified service type according to the preset condition.
- the foregoing preset condition includes at least one of: transmitting service data of a specified service type after a second predetermined interframe interval after receiving the response message; transmitting service data of a specified service type after a predetermined time period; receiving The service data of the specified service type is transmitted after the specified radio frame from the AP.
- the foregoing notification information carries priority information for indicating service data of different specified service types, where the priority information is used to indicate that the priority of the wireless transmission resource is allocated for the service data of different priorities.
- the notification information is sent by: transmitting the notification information by a preset bit information bit or a preset signaling bit of the specified radio frame.
- the specified radio frame includes: a short radio frame, where the short radio frame includes only: a physical layer frame header and a physical layer frame tail.
- the preset bit information bit or the preset signaling bit is set in a physical layer frame header.
- a method for transmitting service data is provided. The method is applied to an AP of a wireless local area network, and includes: receiving notification information of a station from a wireless local area network, where the notification information is used to indicate that the AP preferentially specifies the transmission.
- the service data of the service type allocates a wireless transmission resource; the wireless transmission resource is allocated for transmitting the service data of the specified service type according to the notification information.
- the method includes: sending, to the site, the response information of the notification information, where the response information is used to indicate that the site sends the service data of the specified service type according to the preset condition.
- the preset condition includes at least one of: transmitting service data of a specified service type after a second predetermined interframe interval after receiving the response message; transmitting service data of a specified service type after a predetermined time period; The service data of the specified service type is transmitted after the specified radio frame from the AP.
- the method further includes: sending the specified radio frame to the station, where the designated radio frame is used to indicate that the station sends the specified type after receiving the specified time period of the radio frame.
- Business data Preferably, the foregoing notification information carries priority information for indicating service data of different specified service types, where the priority information is used to indicate that the priority of the wireless transmission resource is allocated for the service data of different priorities.
- a service processing apparatus for service data which is applied to a site of a wireless local area network, and includes: an obtaining module, configured to acquire service data of a specified service type that the station needs to send;
- the sending module is configured to send the notification information to the AP of the wireless local area network, where the notification information is used to indicate that the AP preferentially allocates the wireless transmission resource for the service data of the specified service type.
- the sending module includes: a determining unit, configured to determine a transport channel for transmitting service data of a specified service type; a detecting unit, configured to detect a channel state of the transport channel; and a first sending unit, configured to detect the channel at the detecting unit When the status is idle, the notification information is sent to the AP.
- the first sending unit is configured to send the notification information to the AP when detecting that the channel state is idle within a specified time period and/or is idle within a random time period.
- the sending module includes: a receiving unit, configured to receive a radio frame sent by the AP, and a second sending unit, configured to send the notification information to the AP after the first inter-frame interval after receiving the radio frame.
- the sending module includes: an acquiring unit, configured to acquire a designated time slot of the AP; and a third sending unit, configured to send the notification information to the AP after the designated time slot.
- the foregoing apparatus further includes: a receiving module, configured to receive response information from the AP, where the response information is used to indicate that the station sends the service data of the specified service type according to the preset condition.
- a service data transmission apparatus which is applied to an AP of a wireless local area network, and includes: a receiving module, configured to receive notification information of a station from a wireless local area network, where the notification information is used to indicate The AP preferentially allocates a wireless transmission resource for the service data of the specified service type, and the allocation module is configured to allocate the wireless transmission resource for the service data of the specified service type according to the notification information.
- the foregoing apparatus further includes: a sending module, configured to send response information of the notification information to the station, where the response information is used to instruct the station to send the service data of the specified service type according to the preset condition.
- the present invention provides a technical means for transmitting, to the AP, the notification information for indicating that the AP preferentially allocates the wireless transmission resource for the service data of the specified service type before transmitting the service data of the specified service type, and solves the related technology.
- technical problems such as delays in the transmission of emergency burst data caused by the AP's inability to recognize the priority of the burst data, thereby reducing the transmission delay of the emergency service data and improving the emergency service data burst The success rate of transmission.
- FIG. 1 is a flowchart of a method for processing a service data transmission according to a first embodiment of the present invention
- FIG. 2 is a block diagram showing a structure of a service data transmission processing apparatus according to Embodiment 1 of the present invention
- FIG. 4 is a block diagram of a method for transmitting service data according to Embodiment 2 of the present invention
- FIG. 1 is a flowchart of a method for processing a service data transmission according to a first embodiment of the present invention
- FIG. 2 is a block diagram showing a structure of a service data transmission processing apparatus according to Embodiment 1 of the present invention
- FIG. 4 is a block diagram of a method for transmitting service data according to Embodiment 2 of the present invention
- FIG. 5 is a block diagram showing a structure of a device for transmitting service data according to Embodiment 2 of the present invention
- 6 is a block diagram showing another structure of a service data transmission apparatus according to Embodiment 2 of the present invention
- FIG. 7 is a schematic structural diagram of a WLAN system according to an embodiment of the present invention
- FIG. 8 is another schematic diagram of a WLAN system according to an embodiment of the present invention.
- FIG. 9 is a timing diagram of radio frame exchange according to Embodiment 3 of the present invention
- FIG. 10 is a timing diagram of radio frame exchange according to Embodiment 4 of the present invention
- FIG. 11 is a timing diagram of radio frame exchange according to Embodiment 5 of the present invention;
- FIG. 1 is a flowchart of a method of processing service data transmission according to Embodiment 1 of the present invention. The method is applied to a site in a WLAN. As shown in FIG.
- the method includes: Step S102: Obtain service data of a specified service type that the station needs to send; Step S104, send notification information to an AP of the WLAN, where The notification information is used to indicate that the AP preferentially allocates wireless transmission resources for the service data of the specified service type.
- Step S104 send notification information to an AP of the WLAN, where The notification information is used to indicate that the AP preferentially allocates wireless transmission resources for the service data of the specified service type.
- the foregoing notification information may be sent in multiple manners.
- the first manner is to determine a transmission channel for transmitting service data of a specified service type; detecting a channel state of the transmission channel; When the channel status is idle, the notification information is sent to the AP.
- the above stations can compete for channels through the CSMA/CA mechanism.
- the idle state that is, the idle state may be expressed as follows: The above channel state is idle during a specified time period and/or within a random time period.
- the second mode receives the radio frame sent by the AP, and sends the notification information to the AP after the first interframe interval after receiving the radio frame.
- the third mode acquires a designated time slot of the AP; after the designated time slot, the notification information is sent to the AP.
- the above three methods in sending the notification information can be combined with each other, and the order of combination can be determined according to actual needs: For example: first adopt the first method, then adopt the second method and/or the third The first method is adopted first, and then the first method and/or the third method are used in sequence, and the details are not described herein again.
- the sending time of the service data of the specified service type may be determined according to the indication message of the AP.
- the response information from the AP is received, where the response information is used to indicate
- the site sends the service data of the specified service type according to the preset conditions.
- the foregoing preset condition may be an indication of immediate transmission, and may include but is not limited to at least one of the following: (1) transmitting a specified service type after a second predetermined interframe interval after receiving the response message.
- the service data specifically: the foregoing access point indicates in the response message that the site needs to wait for a period of time, and further, after receiving the response message, and after the indicated period of time, and using the CSMA/CA After the mechanism obtains the channel transmission opportunity, it immediately sends the emergency service burst data; (2) transmits the service data of the specified service type after the predetermined time period; (3) transmits the specified service type after receiving the specified radio frame from the AP.
- Business Data may be used in combination, and the combination includes but is not limited to a two-two combination or a combination of three, for example: after receiving the response message (response frame), the above site is scheduled.
- the emergency service burst data is sent; or after the delay T, the AP first sends a synchronization or trigger frame, and the station then performs the service data of the specified service type (for example, emergency service data) after the predetermined inter-frame interval.
- the service data of the specified service type may be further prioritized, and the following information may be used, but not limited to the following implementation manners:
- the foregoing notification information carries priority information for indicating service data of different specified service types.
- the priority information is used to indicate that the priority of the wireless transmission resource is allocated for the service data of different priorities.
- the notification information may be sent through a message dedicated to sending the notification information, or may be sent through a specified radio frame, where the preset radio frame may be preset when the first transmission mode is adopted.
- the bit information bit or the preset signaling bit transmits the above notification information.
- the preset bit information bit or the preset signaling bit may be one or more.
- the one or more bit information bits or signaling bits may be used to indicate the priority level of the service data (e.g., emergency service burst data) of the specified service type.
- the specified radio frame may include, but is not limited to, a short radio frame, where the short radio frame includes only: a physical layer frame header and a physical layer frame tail.
- the preset bit information bit or the preset signaling bit is set in the physical layer frame header.
- a service data transmission and processing device is also provided.
- the device is applied to a site of a wireless local area network, and is used to implement the foregoing embodiments and preferred embodiments.
- the modules involved in the device are described.
- the term "module" may implement a combination of software and/or hardware of a predetermined function.
- the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and conceivable.
- 2 is a block diagram showing the structure of a transmission processing apparatus for service data according to Embodiment 1 of the present invention. As shown in FIG.
- the device includes: an obtaining module 20, connected to the sending module 22, configured to acquire service data of a specified service type that the station needs to send, and a sending module 22, configured to send, to the AP of the wireless local area network, notification information, where , notification information is used to indicate
- the AP preferentially allocates radio transmission resources for transmitting service data of a specified service type.
- the AP can also learn that the site needs to send the service data of the specified service type. Therefore, the transmission resource can be preferentially allocated for the transmission of the service data of the specified service type, thereby reducing the designated service.
- the transmission delay of the type of business data As shown in FIG.
- the foregoing sending module 22 may further include, but is not limited to, the following processing unit: a determining unit 220, connected to the detecting unit 222, for determining a transport channel for transmitting service data of a specified service type;
- the detecting unit 222 is connected to the first sending unit 224, and is configured to detect a channel state of the transport channel.
- the first sending unit 224 is configured to: when the detecting unit 222 detects that the channel state is idle, send the notification information to the AP, specifically,
- the foregoing first sending unit 224 is configured to send the notification information to the AP when detecting that the channel state is idle within a specified time period and/or is idle within a random time period.
- a determining unit 220 connected to the detecting unit 222, for determining a transport channel for transmitting service data of a specified service type
- the detecting unit 222 is connected to the first sending unit 224, and is configured to detect a channel state of the transport channel.
- the first sending unit 224
- the foregoing sending module 22 may further include, but is not limited to, the following processing unit: a receiving unit 226, connected to the second sending unit 228, configured to receive a radio frame sent by the AP;
- the unit 228 is configured to send the notification information to the AP after the first inter-frame interval after receiving the radio frame.
- the foregoing sending module 22 may further include, but is not limited to, the following processing unit: an obtaining unit 30, connected to the third sending unit 32, for acquiring a designated time slot of the AP;
- the unit 32 is configured to send the notification information to the AP in the designated time slot.
- FIG. 30 the processing unit 2266
- FIG. 30 the processing unit 30
- the unit 32 is configured to send the notification information to the AP in the designated time slot.
- a receiving module 24 configured to receive response information from the AP, where the response information is used to indicate that the station sends the specified service type according to a preset condition.
- Business data It should be noted that the "first”, “second”, and the like in this embodiment are merely for convenience of description, that is, only similar description information that distinguishes contexts, and is not used to limit the execution order.
- Embodiment 2 This embodiment corresponds to Embodiment 1, and will be described on the AP side of the wireless local area network.
- 4 is a flow chart of a method of transmitting service data according to Embodiment 2 of the present invention. The method is applied to an AP without a local area network. As shown in FIG.
- the method includes: Step S402: Receive notification information of a station from a wireless local area network, where the notification information is used to indicate that the AP preferentially sends service data of a specified service type. Allocating the wireless transmission resource; Step S404, allocating the wireless transmission resource for the service data of the specified service type according to the notification information.
- the response information of the notification information may be sent to the site, where the response information is used to indicate that the site sends the service data of the specified service type according to the preset condition.
- the foregoing preset condition includes at least one of: transmitting service data of a specified service type after a second predetermined interframe interval after receiving the response message; and transmitting service data of a specified service type after a predetermined time period; After receiving the specified radio frame from the AP, the service data of the specified service type is sent. It should be noted that the foregoing three preset conditions may be combined with each other. For details, refer to the description in Embodiment 1, and details are not described herein again.
- the specified radio frame is sent to the station, where the designated radio frame is used to indicate that the station sends the service data of the specified type after receiving the radio frame for a specified period of time.
- the designated radio frame is used to indicate that the station sends the service data of the specified type after receiving the radio frame for a specified period of time.
- the foregoing access point indicates in the response frame B that the station needs to wait for a period of time, and sends a radio frame C to the station after the indicated period of time. Further, after receiving the response frame B, and after receiving the response period B, and after receiving the radio frame C sent by the access point, in the frame exchange process with the access point, Send emergency service burst data.
- the waiting time may be set according to the current load status and the emergency service data burst priority indicated by the site.
- the notification information carries priority information for indicating service data of different specified service types, where the priority information is used to indicate that the priority of the wireless transmission resource is allocated for the service data of different priorities.
- a transmission device for service data is also provided, and the device is applied to a wireless local area network.
- the device includes: a receiving module 50, connected to the allocating module 52, configured to receive notification information from a site of the wireless local area network, where the notification information is used to indicate that the AP preferentially sends the service of the specified service type.
- the data is allocated to the wireless transmission resource; and the allocating module 52 is configured to allocate the wireless transmission resource for the service data of the specified service type according to the notification information.
- the foregoing apparatus may further include: a sending module 54, configured to send, to the site, response information of the notification information, where the response information is used to indicate that the site sends the specified service type according to the preset condition. Business data.
- the WLAN system includes: an access point (AP) 100 and a station (STA) 200.
- AP access point
- STA station
- the station 200 is a wireless local area network module of a fire sensor device 300.
- the alarm data including the temperature abnormality instruction is automatically generated, transmitted to the access point 100 through the station 200, and further transmitted to the network server.
- the specific WLAN architecture in this embodiment can be seen in FIG. 8.
- the station 200 After receiving the alarm data from the upper layer, the station 200 generates emergency service data, and starts detecting the channel, and contends the channel transmission opportunity through the CSMA/CA mechanism.
- the station 200 Upon detecting that the channel is idle and can be transmitted by the CSMA/CA mechanism, the station 200 transmits a short PS-Poll radio frame to the access point 100, and sets the Emergency Indication field in the physical frame header of the short PS-Poll radio frame to 1, indicating that the site 200 has emergency service burst data to send.
- the access point 100 After receiving the short PS-Poll radio frame, the access point 100 determines to notify the station 200 to immediately send emergency service burst data according to the value of the Emergency Indication field and the current load level of the access point 100, and between the short frames.
- the short interval (Short InterFrame Spacing, abbreviated as SIFS) is sent back to the station 200 with a short acknowledgement character (Acknowledgement, abbreviated as ACK) frame, and the predefined field in the physical frame header of the short ACK is set to notify the 200 to immediately send an emergency service burst. Send data.
- SIFS Short InterFrame Spacing
- ACK short acknowledgement character
- the station 200 receives the short ACK frame sent by the access point 100, and detects that a predefined field in the physical frame header of the short ACK frame is set, indicating that the data is allowed to be sent immediately, and then accesses after the SIFS interframe interval.
- Point 100 transmits a radio frame containing emergency traffic burst data.
- the access point 100 receives the radio frame containing the emergency service burst data, and sends an ACK acknowledgement frame after the SIFS interframe interval, confirming that the radio frame containing the emergency service burst data has been correctly received.
- Embodiment 4 As shown in FIG. 8, a station 200 is a wireless local area network module of a fire sensor device 300.
- the alarm data including the temperature abnormality indication is automatically generated, and the alarm data is passed.
- Site 200 is sent to access point 100 and sent to the network server.
- station 200 In normal operation, station 200 is in a power saving mode.
- the priority of the emergency service burst data is divided into four levels, wherein the priorities are from high to low: level 1, level 2, level 3, and level 4.
- the station 200 After receiving the alarm data from the upper layer, the station 200 generates emergency service data and enters the wake-up listening window of the power saving mode.
- the station 200 listens to the beacon frame broadcasted by the access point 100, and finds that there is a downlink data notification of the station 200 in the beacon frame.
- the station 200 sends a short PS-Poll frame to the access point 100, notifying the access point 100 that it has awake itself and can receive downlink data.
- the station 200 sets the Emergency Indication field in the physical frame header in the PS-Poll frame to 2, indicating that the station 200 has emergency traffic burst data corresponding to the emergency priority level 2 to be transmitted.
- the access point 100 determines to notify the station 200 to send emergency service burst data after a delay T according to the value of the Emergency Indication field and the current load level of the access point 100.
- An ACK frame is replied to the station 200 after the SIFS interframe interval, and a predefined field in the physical frame header of the ACK is set to inform the station 200 to wait for the delay T.
- the station 200 When the station 200 receives the ACK frame sent by the access point 100 and detects that the predefined field in the physical frame header of the short ACK frame is set to the delay time, the station 200 waits for the delay ⁇ .
- the access point 100 contends for the channel according to the CSMA/CA mechanism after the delay, and sends a Trigger radio frame to the station 200 after detecting that the channel is idle.
- the station 200 receives the Trigger radio frame and transmits a radio frame containing emergency service burst data after the SIFS interframe interval.
- the access point 100 receives the radio frame containing the emergency service burst data, and sends an ACK acknowledgement frame after the SIFS interframe interval, confirming that the radio frame containing the emergency service burst data has been correctly received.
- a station 200 is a wireless local area network module of a fire sensor device 300.
- the alarm data including the temperature abnormality indication is automatically generated, transmitted to the access point 100 through the station 200, and further transmitted to the network server.
- station 200 is in a power saving mode.
- the priority of the emergency service burst data is divided into four levels, wherein level 1 indicates the highest priority, level 4 indicates the lowest priority, and level 2 and level 3 indicate different priorities from high to low.
- the station 200 after receiving the alarm data from the upper layer, the station 200 generates emergency service data and just enters the wake-up listening window of the power saving mode.
- the site 200 listens to the beacon frame broadcast by the access point 100, and finds that there is a downlink data notification of the station 200 in the beacon frame.
- the access point 100 sends a downlink synchronization frame to the station 200.
- the station 200 After receiving the downlink synchronization frame, the station 200 sends a PS-Poll to the access point 100 to notify the access point 100 that it can receive the downlink data after waiting for the SIFS interframe space. .
- the station 200 sets the Emergency Indication field in the physical frame header in the PS-Poll frame to 1, indicating that the station 200 has emergency traffic burst data corresponding to level 1 to be transmitted.
- the access point 100 After receiving the PS-Poll radio frame, the access point 100 determines to notify the station 200 to send emergency service burst data after a delay T according to the value of the Emergency Indication field and the current load level of the access point 100.
- An ACK frame is replied to the station 200 after the SIFS interframe interval, and a predefined field in the physical frame header of the ACK is set to inform the station 200 to wait for the delay T.
- the station 200 receives the ACK frame sent by the access point 100 and detects that the predefined field in the physical frame header of the short ACK frame is set to the delay time, the station 200 waits for the delay ⁇ .
- the station 200 contends for the channel according to the CSMA/CA mechanism after the delay, and after detecting that the channel is idle, transmits a radio frame containing the emergency service burst data to the access point 100.
- the access point 100 receives the radio frame containing the emergency service burst data, and sends an ACK acknowledgement frame after the SIFS interframe interval, confirming that the radio frame containing the emergency service burst data has been correctly received.
- a station 200 is a wireless local area network module of a fire sensor device 300. When the abnormal temperature rise is detected at 300, the alarm data including the temperature abnormality indication is automatically generated, transmitted to the access point 100 through the station 200, and further transmitted to the network server.
- station 200 In normal operation, station 200 is in a longer power saving mode.
- the priority of the emergency service burst data is divided into two categories, which respectively represent the emergency service burst data, or are not the emergency service burst data.
- the station 200 After receiving the alarm data from the upper layer, the station 200 generates emergency service data and enters a listening state of a longer power saving mode. The station 200 listens to the channel, and when it detects that the channel is idle and allows data to be transmitted, sends a short synchronization frame to the access point 100, notifying the access point 100 that it has woken up.
- the station 200 sets the Emergency Indication field in the physical frame header in the short synchronization frame to 1, indicating that the station 200 has emergency service burst data to be transmitted.
- the access point 100 determines, according to the value of the Emergency Indication field and the current load level of the access point 100, that the notification station 200 waits for a delay T, and waits for the access point 100 to first send downlink data. , then send emergency service burst data.
- the access point 100 replies an ACK frame to the station 200 after the SIFS interframe interval, and sets a predefined field in the physical frame header of the ACK to inform the station 200 to wait for the delay.
- the station 200 When the station 200 receives the ACK frame sent by the access point 100 and detects that the predefined field in the physical frame header of the short ACK frame is set to the delay time, the station 200 waits for the delay ⁇ .
- the access point 100 contends for the channel according to the CSMA/CA mechanism after the delay, and after detecting the channel idle, transmits the downlink radio frame containing the data to the station 200.
- the station 200 receives the downlink radio frame including the data, and detects that the radio frame indicates no subsequent downlink data transmission, and then sends an ACK acknowledgement frame after the SIFS interframe interval.
- the station 200 transmits a radio frame containing emergency traffic burst data after the SIFS interframe interval.
- the station notifies the AP to control the uplink data transmission according to the priority before transmitting the emergency service burst data, and shortens the high priority emergency service burst.
- the data transmission delay reduces the collision probability and improves the success rate of emergency service burst data transmission.
- software is also provided for performing the technical solutions described in the above embodiments and preferred embodiments.
- a storage medium is provided, the software being stored, including but not limited to: an optical disk, a floppy disk, a hard disk, a rewritable memory, and the like.
- modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
- the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
- the invention is not limited to any specific combination of hardware and software.
- the above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention.
- the foregoing technical solution provided by the embodiment of the present invention may be configured to: before sending the service data of the service type, send, to the AP, the AP to send the designated service preferentially to send the specified service.
- the technical means for allocating the notification information of the wireless transmission resource of the type of service data, and solving the technology, in the related art, the delay of the emergency burst data transmission caused by the AP not being able to identify the priority of the burst data when the emergency service data is transmitted The problem is to reduce the transmission delay of emergency service data and improve the success rate of emergency service data burst transmission.
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Abstract
本发明提供了一种业务数据的传输处理、传输方法及装置,其中,上述传输处理方法应用于无线局域网的站点,该传输处理方法包括:获取站点需要发送的指定业务类型的业务数据;向无线局域网的AP发送通知信息,其中,通知信息用于指示AP优先为发送指定业务类型的业务数据分配无线传输资源。采用本发明提供的上述技术方案,解决了相关技术中,在紧急业务数据发送时,由于AP无法识别该突发数据优先级而导致的紧急突发数据发送的延迟等技术问题,从而降低了紧急业务数据的传输延迟,同时提高了紧急业务数据突发传输的成功率。
Description
业务数据的传输处理、 传输方法及装置
技术领域 本发明涉及通信领域, 尤其是涉及一种业务数据的传输处理、 传输方法及装置。 背景技术 目前,在无线网络领域,无线局域网(Wireless Local Area Network,简称为 WLAN) 快速发展, 对 WLAN 的应用需求日益增长。 电气和电子工程师协会工业规范 IEEE802.i l组中,先后定义了 802.11a, 802.11b, 802.11g等一系列标准最普通的 WLAN 技术, 随后又陆续出现了其他任务组, 致力于发展涉及现有 802.11技术改进的规范。 其中, 802.11 ah任务组主要制订使用 1 GHz频段以下免许可频段的 WLAN网络空口标 准, 用于支持智能电网及传感器网络等新的网络应用。 无线局域网的基本架构指一个基本服务集(Basic Service Set, 简称 BSS), 包含一 个接入点(Access Point,简称 AP)以及与 AP相关联的多个站点(Station,简称 STA), 具体架构可以参见图 1所示。 802.11定义了两种操作模式:分布式协调功能(Distributed Coordination Function, 简称 DCF) 和点协调功能 (Point Coordination Function, 简称 PCF ), 以及针对这两种操作模式的改进: 增强型分布式协调访问功能 (Enhanced Distributed Channel Access, 简称 EDCA) 和混合协调功能控制信道访问功能 (Hybrid Coordination Function Controlled Channel Access, 简称 HCCA)。 其中, DCF是最基本 的操作模式, 利用带有冲突避免的载波侦听多路访问机制 (Carrier Sense Multiple Access with Collision Avoidance, 简称为 CSMA/CA)使多个站点共享无线信道。 EDCA 是增强型操作模式, 基于 CSMA/CA机制, 支持多个不同优先级队列共享无线信道, 并以传输机会(Transmission Opportunity, 简称 TXOP)为单位发送每个优先级队列的 数据。 使用 1GHz以下免许可频段资源时, 无线局域网可以提供更大的覆盖范围, 但同 时也给终端的省电能力提出挑战。 现有省电模式是指进入省电模式的终端定期醒来监 听 Beacon帧中是否有自己的下行数据待发送。为了能长时间应用,无线局域网终端可 以使用更长省电模式, 即在完成当前传输, 没有其它本地数据要发送时, 终端关闭无 线局域网的收发模块并进入休眠状态, 直到有新的本地数据需要发送或者休眠时间达 到预定值。 另一方面, 使用 1GHz以下免许可频段时 WLAN主要应用于智能抄表和传
感网络。 在某些应用, 如火警和瓦斯监控应用中, 为了省电, 终端在大部分时间处于 省电模式; 而当出现异常数据时, 传感器终端又需要尽快将其发出。 在现有方案中, 为了保证上行数据的可靠传输, 进入省电模式的终端在新的本地 数据到来后, 会首先监听无线信道, 在检测到可以发送信号后向 AP发送一个无线帧, 通知 AP有上行数据需要发送。 AP根据该无线帧携带的上行数据指示, 为终端分配用 于上行传输的时隙。 但是终端需要发送的数据可能是普通业务, 也可能是紧急业务如 异常告警等, AP无法区分这些突发数据的优先级, 只能根据发送请求的次序安排, 会 造成紧急突发数据发送的延迟。 针对相关技术中的上述问题, 目前尚未提出有效的解决方案。 发明内容 针对相关技术中, 在紧急业务数据发送时, 由于 AP无法识别该突发数据优先级 而导致的紧急突发数据发送的延迟等技术问题, 本发明实施例提供了一种业务数据的 传输处理、 传输方法及装置, 以至少解决上述问题。 根据本发明的一个实施例, 提供了一种业务数据的传输处理方法, 应用于无线局 域网的站点, 包括: 获取站点需要发送的指定业务类型的业务数据; 向无线局域网的 AP发送通知信息, 其中, 通知信息用于指示 AP优先为发送指定业务类型的业务数据 分配无线传输资源。 优选地, 向 AP发送通知信息, 包括: 确定发送指定业务类型的业务数据的传输 信道; 检测传输信道的信道状态; 在检测到信道状态为空闲时, 向 AP发送通知信息。 优选地, 在检测到信道状态为空闲时, 向 AP发送通知信息, 包括: 在检测到信 道状态在指定时间段内空闲和 /或随机时间段内空闲时, 向 AP发送通知信息。 优选地, 向 AP发送通知信息, 包括: 接收 AP发送的无线帧; 在接收到无线帧后 的第一帧间间隔后, 向 AP发送通知信息。 优选地, 向 AP发送通知信息, 包括: 获取 AP的指定时隙; 在指定时隙后向 AP 发送通知信息。 优选地, 向 AP发送通知信息之后, 包括: 接收来自 AP的响应信息, 其中, 响应 信息用于指示站点按照预设条件发送指定业务类型的业务数据。
优选地, 上述预设条件包括以下至少之一: 在接收到响应消息后的第二预定帧间 间隔后发送指定业务类型的业务数据;在预定时间段后发送指定业务类型的业务数据; 在接收到来自 AP的指定无线帧后发送指定业务类型的业务数据。 优选地, 上述通知信息中携带有用于指示不同指定业务类型的业务数据的优先级 信息, 其中, 该优先级信息用于指示为不同优先级的业务数据分配无线传输资源的优 先级。 优选地, 通过以下方式发送通知信息: 通过在指定无线帧的预设比特信息位或预 设信令位发送通知信息。 优选地, 上述指定无线帧包括: 短无线帧, 其中, 该短无线帧仅包括: 物理层帧 头和物理层帧尾。 优选地, 上述预设比特信息位或预设信令位设置在物理层帧头。 根据本发明的另一个实施例, 提供了一种业务数据的传输方法, 应用于无线局域 网的 AP, 包括: 接收来自无线局域网的站点的通知信息, 其中, 通知信息用于指示 AP优先为发送指定业务类型的业务数据分配无线传输资源;按照通知信息为发送指定 业务类型的业务数据分配无线传输资源。 优选地, 接收来自站点的通知信息之后, 包括: 向站点发送通知信息的响应信息, 其中, 响应信息用于指示站点按照预设条件发送指定业务类型的业务数据。 优选地, 预设条件包括以下至少之一: 在接收到响应消息后的第二预定帧间间隔 后发送指定业务类型的业务数据; 在预定时间段后发送指定业务类型的业务数据; 在 接收到来自 AP的指定无线帧后发送指定业务类型的业务数据。 优选地, 在预定时间段后发送指定业务类型的业务数据时, 还包括: 向站点发送 指定无线帧, 其中, 指定无线帧用于指示站点在接收到无线帧的指定时间段后发送指 定类型的业务数据。 优选地, 上述通知信息中携带有用于指示不同指定业务类型的业务数据的优先级 信息, 其中, 该优先级信息用于指示为不同优先级的业务数据分配无线传输资源的优 先级。 根据本发明的又一个实施例, 提供了一种业务数据的传输处理装置, 应用于无线 局域网的站点, 包括: 获取模块, 用于获取站点需要发送的指定业务类型的业务数据;
发送模块, 用于向无线局域网的 AP发送通知信息, 其中, 通知信息用于指示 AP优先 为发送指定业务类型的业务数据分配无线传输资源。 优选地, 上述发送模块包括: 确定单元, 用于确定发送指定业务类型的业务数据 的传输信道; 检测单元, 用于检测传输信道的信道状态; 第一发送单元, 用于在检测 单元检测到信道状态为空闲时, 向 AP发送通知信息。 优选地, 上述第一发送单元, 用于在检测到信道状态在指定时间段内空闲和 /或随 机时间段内空闲时, 向 AP发送通知信息。 优选地, 上述发送模块包括: 接收单元, 用于接收 AP发送的无线帧; 第二发送 单元, 用于在接收到无线帧后的第一帧间间隔后, 向 AP发送通知信息。 优选地, 上述发送模块包括: 获取单元, 用于获取 AP的指定时隙; 第三发送单 元, 用于在指定时隙后向 AP发送通知信息。 优选地, 上述装置还包括: 接收模块, 用于接收来自 AP的响应信息, 其中, 响 应信息用于指示站点按照预设条件发送指定业务类型的业务数据。 根据本发明的再一个实施例, 提供了一种业务数据的传输装置, 应用于无线局域 网的 AP, 包括: 接收模块, 用于接收来自无线局域网的站点的通知信息, 其中, 通知 信息用于指示 AP优先为发送指定业务类型的业务数据分配无线传输资源; 分配模块, 用于按照通知信息为发送指定业务类型的业务数据分配无线传输资源。 优选地, 上述装置还包括: 发送模块, 用于向站点发送通知信息的响应信息, 其 中, 响应信息用于指示站点按照预设条件发送指定业务类型的业务数据。 通过本发明, 采用在发送指定业务类型的业务数据之前, 向 AP发送用于指示所 述 AP优先为发送所述指定业务类型的业务数据分配无线传输资源的通知信息的技术 手段, 解决了相关技术中, 在紧急业务数据发送时, 由于 AP无法识别该突发数据优 先级而导致的紧急突发数据发送的延迟等技术问题, 从而降低了紧急业务数据的传输 延迟, 同时提高了紧急业务数据突发传输的成功率。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中-
图 1为根据本发明实施例 1的业务数据的传输处理方法的流程图; 图 2为根据本发明实施例 1的业务数据的传输处理装置的结构框图; 图 3为根据本发明实施例 1的业务数据的传输处理装置的另一结构框图; 图 4为根据本发明实施例 2的业务数据的传输方法的流程图; 图 5为根据本发明实施例 2的业务数据的传输装置的结构框图; 图 6为根据本发明实施例 2的业务数据的传输装置的另一结构框图; 图 7为根据本发明实施例的 WLAN系统的架构示意图; 图 8为根据本发明实施例的 WLAN系统的另一架构示意图; 图 9为根据本发明实施例 3的无线帧交换时序示意图; 图 10为根据本发明实施例 4的无线帧交换时序示意图; 图 11为根据本发明实施例 5的无线帧交换时序示意图; 图 12为根据本发明实施例 6的无线帧交换时序示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在不冲突的 情况下, 本申请中的实施例及实施例中的特征可以相互组合。 实施例 1 图 1为根据本发明实施例 1的业务数据的传输处理方法的流程图。 该方法应用于 无线局域网中的站点, 如图 1所示, 该方法包括: 步骤 S102, 获取站点需要发送的指定业务类型的业务数据; 步骤 S104, 向无线局域网的 AP发送通知信息, 其中, 该通知信息用于指示 AP 优先为发送指定业务类型的业务数据分配无线传输资源。 通过上述各个处理步骤, 由于在发送指定业务类型的业务数据之前, 向 AP发送 了用于指示 AP优先为发送指定业务类型的业务数据分配无线传输资源的通知信息,
使得 AP获知了站点需要发送该指定业务类型的业务数据, 因此, 可以优先为该指定 业务类型的业务数据的发送分配传输资源, 从而降低了对该指定业务类型的业务数据 的传输延迟。 在本实施例中, 可以采用多种方式发送上述通知信息, 例如可以采用以下几种方 式- 第 1种方式 确定发送指定业务类型的业务数据的传输信道; 检测该传输信道的信道状态; 在 检测到上述信道状态为空闲时, 向 AP 发送通知信息。 其中, 上述站点可以通过 CSMA/CA机制竞争信道。 其中, 信道状态为空闲即空闲状态可以表现为以下形式: 上述信道状态在指定时间段内空闲和 /或随机时间段内空闲。 第 2种方式 接收 AP发送的无线帧;在接收到无线帧后的第一帧间间隔后, 向 AP发送通知信 息。 第 3种方式 获取 AP的指定时隙; 在该指定时隙后向 AP发送通知信息。 需要说明的是, 发送通知信息中的上述三种方式是可以互相组合的, 并且组合次 序可以根据实际需要确定: 例如: 先采用第 1 种方式, 然后依次采用第 2种方式和 / 或第 3种方式; 先采用第 2种方式, 然后依次采用第 1种方式和 /或第 3种方式等等, 此处不再赘述。 在本实施例中, 可以根据 AP的指示消息确定上述指定业务类型的业务数据的发 送时机, 具体地, 在向 AP发送通知信息之后, 接收来自 AP的响应信息, 其中, 该响 应信息用于指示站点按照预设条件发送指定业务类型的业务数据。 其中, 此时, 上述预设条件可以为指示立即发送, 也可包括但不限于以下至少之一: (1 ) 在接收到所述响应消息后的第二预定帧间间隔后发送指定业务类型的业务数据, 具体 地: 上述接入点在上述响应消息中指示上述站点需要等待一段时间, 进一步地, 上述 站点在接收到响应消息后, 并在所指示的一段时间后, 并在使用 CSMA/CA机制得到 信道发送机会后, 立即发送紧急业务突发数据; (2) 在预定时间段后发送指定业务类 型的业务数据; (3 ) 在接收到来自 AP的指定无线帧后发送上述指定业务类型的业务
数据。 需要说明的是, 上述三个预设条件是可以组合使用的, 组合包括但不限于两两 组合或三个一起组合, 例如: 在接收到上述响应消息 (响应帧) 后, 上述站点在预定 的帧间间隔后, 立即发送紧急业务突发数据; 或者在延时 T后, AP先发同步或触发 帧, 站点再在预定的帧间间隔后上述指定业务类型的业务数据 (例如紧急业务数据)。 在本实施例中, 还可以对指定业务类型的业务数据再次划分优先级, 具体地可以 采用但不限于以下实现方式: 上述通知信息中携带有用于指示不同指定业务类型的业 务数据的优先级信息, 其中, 该优先级信息用于指示为不同优先级的业务数据分配无 线传输资源的优先级。 在本实施例中, 上述通知信息可以通过专用于发送该通知信息的消息发送, 也可 以通过指定的无线帧发送, 其中, 在采用第 1种发送方式时, 可以通过在指定无线帧 的预设比特信息位或预设信令位发送上述通知信息。 其中, 上述预设比特信息位或预 设信令位可以为一个或多个。 上述一个或多个比特信息位或信令位可以用于指示上述 指定业务类型的业务数据 (例如紧急业务突发数据) 的优先等级。 在本实施例中, 上述指定无线帧可以包括但不限于: 短无线帧, 其中, 该短无线 帧仅包括: 物理层帧头和物理层帧尾。 上述预设比特信息位或上述预设信令位设置在 上述物理层帧头。 在本实施例中还提供了一种业务数据的传输处理装置, 该装置应用于无线局域网 的站点, 用于实现上述实施例及优选实施方式, 已经进行过说明的不再赘述, 下面对 该装置中涉及到的模块进行说明。 如以下所使用的, 术语"模块"可以实现预定功能的 软件和 /或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现,但是硬件, 或者软件和硬件的组合的实现也是可能并被构想的。 图 2为根据本发明实施例 1的业 务数据的传输处理装置的结构框图。 如图 2所示, 该装置包括: 获取模块 20,连接至发送模块 22,用于获取站点需要发送的指定业务类型的业务 数据; 发送模块 22, 用于向无线局域网的 AP发送通知信息, 其中, 通知信息用于指示
AP优先为发送指定业务类型的业务数据分配无线传输资源。 通过上述各个模块所实现的功能, 同样可以使得 AP获知站点需要发送该指定业 务类型的业务数据, 因此, 可以优先为该指定业务类型的业务数据的发送分配传输资 源, 从而降低了对该指定业务类型的业务数据的传输延迟。
在本实施例中,如图 3所示,上述发送模块 22还可以包括但不限于以下处理单元: 确定单元 220,连接至检测单元 222,用于确定发送指定业务类型的业务数据的传输信 道; 检测单元 222, 连接至第一发送单元 224, 用于检测传输信道的信道状态; 第一发 送单元 224, 用于在检测单元 222检测到信道状态为空闲时, 向 AP发送通知信息, 具 体地, 上述第一发送单元 224, 用于在检测到所述信道状态在指定时间段内空闲和 /或 随机时间段内空闲时, 向所述 AP发送所述通知信息。 在本实施例中,如图 3所示,上述发送模块 22还可以包括但不限于以下处理单元: 接收单元 226, 连接至第二发送单元 228, 用于接收 AP发送的无线帧; 第二发送单元 228, 用于在接收到无线帧后的第一帧间间隔后, 向 AP发送通知信息。 在本实施例中,如图 3所示,上述发送模块 22还可以包括但不限于以下处理单元: 获取单元 30, 连接至第三发送单元 32, 用于获取 AP的指定时隙; 第三发送单元 32, 用于在指定时隙内向 AP发送通知信息。 在本实施例中, 如图 3所示, 还可以包括以下处理模块: 接收模块 24, 用于接收 来自 AP的响应信息, 其中, 该响应信息用于指示站点按照预设条件发送指定业务类 型的业务数据。 需要说明的是, 本实施例中的 "第一""第二"等仅为叙述方便, 即仅为区分上下文 的类似描述信息, 并不用于对执行顺序的限定。 实施例 2 本实施例与实施例 1相对应, 在无线局域网的 AP侧进行说明。 图 4为根据本发明实施例 2的业务数据的传输方法的流程图。 该方法应用于无局 域网的 AP, 如图 4所示, 该方法包括: 步骤 S402, 接收来自无线局域网的站点的通知信息, 其中, 该通知信息用于指示 AP优先为发送指定业务类型的业务数据分配无线传输资源; 步骤 S404, 按照通知信息为发送指定业务类型的业务数据分配无线传输资源。 通过上述各个步骤, 由于在 AP侧接收了上述通知信息, 因此, 同样使得 AP获知 站点需要发送该指定业务类型的业务数据, 这样便可以优先为该指定业务类型的业务 数据的发送分配传输资源, 从而降低对该指定业务类型的业务数据的传输延迟。
在本实施例中, 可以在接收来自站点的通知信息之后, 向站点发送上述通知信息 的响应信息, 其中, 该响应信息用于指示站点按照预设条件发送指定业务类型的业务 数据。 此时, 上述预设条件包括以下至少之一: 在接收到上述响应消息后的第二预定帧 间间隔后发送指定业务类型的业务数据; 在预定时间段后发送指定业务类型的业务数 据; 在接收到来自 AP的指定无线帧后发送上述指定业务类型的业务数据。 需要说明 的是, 上述三种预设条件是可以相互组合的, 具体可以参见实施例 1中的描述, 此处 不再赘述。 在在预定时间段后发送指定业务类型的业务数据时, 向站点发送指定无线帧, 其 中, 指定无线帧用于指示站点在接收到无线帧的指定时间段后发送上述指定类型的业 务数据。 具体地, 可以表现为但不限于以下处理过程: 上述接入点在上述响应帧 B中 指示上述站点需要等待一段时间, 并在上述指示的一段时间后向上述站点发送一个无 线帧 C。 进一步地, 上述站点在接收到上述响应帧 B后, 并在所指示的一段时间后, 并在接收到上述接入点发送的无线帧 C后, 在与上述接入点的帧交换过程中, 发送紧 急业务突发数据。 其中, 上述等待时间可以根据当前负荷状态以及上述站点指示的紧 急业务数据突发优先级设置。 在本实施例中, 上述通知信息中携带有用于指示不同指定业务类型的业务数据的 优先级信息, 其中, 该优先级信息用于指示为不同优先级的业务数据分配无线传输资 源的优先级。 在本实施例中还提供了一种业务数据的传输装置, 该装置应用于无线局域网的
AP, 如图 5所示, 该装置包括: 接收模块 50, 连接至分配模块 52, 用于接收来自无线局域网的站点的通知信息, 其中, 通知信息用于指示 AP优先为发送指定业务类型的业务数据分配无线传输资源; 分配模块 52, 用于按照通知信息为发送指定业务类型的业务数据分配无线传输资 源。 在本实施例中, 如图 6所示, 上述装置还可以包括: 发送模块 54, 用于向站点发 送通知信息的响应信息, 其中, 该响应信息用于指示站点按照预设条件发送指定业务 类型的业务数据。
为了更好地理解上述实施例, 以下结合实施例 3-6和相关附图详细说明。 本实施 例可以基于图 7所示无线局域网实现。 如图 7所示, 该 WLAN系统包括: 一个接入点 (AP) 100, 一个站点 ( STA) 200。 需要说明的是, 本实施例中的 "第一""第二"等仅为叙述方便, 即仅为区分上下文 的类似描述信息, 并不用于对执行顺序的限定。 实施例 3 在本实施例中, 站点 200是一个火警传感器设备 300的无线局域网模块。 在火警 传感器设备 300检测到异常温度上升时, 自动生成包含温度异常指示的警报数据, 通 过站点 200发送给接入点 100, 进而发送到网络服务器。 本实施例中的具体 WLAN架 构可以参见图 8所示。 如图 9所示, 站点 200在接收到来自上层的警报数据后, 生成紧急业务数据, 并 开始检测信道, 通过 CSMA/CA 机制竞争信道发送机会。 在检测到信道空闲并按 CSMA/CA机制可以发送时, 站点 200向接入点 100发送一个短 PS-Poll无线帧, 并将 该短 PS-Poll无线帧物理帧头内的 Emergency Indication域设置为 1, 表示站点 200有 紧急业务突发数据要发送。 接入点 100在接收到上述短 PS-Poll无线帧后, 根据其 Emergency Indication域的 值以及接入点 100当前的负荷水平, 决定通知站点 200立即发送紧急业务突发数据, 并在短帧间间隔( Short InterFrame Spacing, 简称为 SIFS)后向站点 200回复一个短确 认字符(Acknowledgement, 简称为 ACK)帧, 并设置该短 ACK的物理帧头中的预定 义的字段通知 200立即发送紧急业务突发数据。 站点 200在接收到接入点 100发送的短 ACK帧, 并检测到该短 ACK帧的物理帧 头中的预定义字段被设置,表示允许立即发送数据, 随即在 SIFS帧间间隔后向接入点 100发送包含紧急业务突发数据的无线帧。 接入点 100在接收到包含紧急业务突发数据的无线帧,并在 SIFS帧间间隔后发送 ACK确认帧, 确认已经正确接收到上述包含紧急业务突发数据的无线帧。 实施例 4 如图 8所示, 站点 200是一个火警传感器设备 300的无线局域网模块。 在火警传 感器设备 300检测到异常温度上升时, 自动生成包含温度异常指示的警报数据, 通过
站点 200发送给接入点 100, 进而发送到网络服务器。 在正常工作时, 站点 200处于 省电模式。 在本实施例中, 将紧急业务突发数据的优先级分为 4个等级, 其中, 优先级从高 至低依次为: 等级 1、 等级 2、 等级 3和等级 4。 如图 10所示, 站点 200在接收到来自上层的警报数据后, 生成紧急业务数据, 同 时刚好进入省电模式的醒来监听窗口。站点 200监听接入点 100广播的信标 beacon帧, 并发现 beacon帧中有站点 200的下行数据通知。站点 200向接入点 100发送短 PS-Poll 帧, 通知接入点 100自己已经醒来, 可以接收下行数据。 同时, 站点 200将该 PS-Poll 帧中的物理帧头中的 Emergency Indication域设置为 2, 表示站点 200有对应紧急优先 级为等级 2的紧急业务突发数据要发送。 接入点 100在接收到上述 PS-Poll无线帧后, 根据其 Emergency Indication域的值 以及接入点 100当前的负荷水平, 决定通知站点 200在一个延时 T后发送紧急业务突 发数据, 并在 SIFS帧间间隔后向站点 200回复一个 ACK帧, 并设置该 ACK的物理 帧头中的预定义的字段通知站点 200等待延时 T。 站点 200在接收到接入点 100发送的 ACK帧, 并检测到该短 ACK帧的物理帧头 中的预定义字段被设置为延时 Τ, 则站点 200等待延时 Τ。 接入点 100在延时 Τ后按 CSMA/CA机制竞争信道, 在检测到信道空闲后, 向站 点 200发送一个触发 Trigger无线帧。 站点 200接收到 Trigger无线帧, 并在 SIFS帧间间隔后发送包含紧急业务突发数 据的无线帧。 接入点 100接收到包含紧急业务突发数据的无线帧, 并在 SIFS帧间间隔后发送 ACK确认帧, 确认已经正确接收到上述包含紧急业务突发数据的无线帧。 实施例 5 如图 8所示, 站点 200是一个火警传感器设备 300的无线局域网模块。 在 300检 测到异常温度上升时, 自动生成包含温度异常指示的警报数据, 通过站点 200发送给 接入点 100, 进而发送到网络服务器。 在正常工作时, 站点 200处于省电模式。 在本实施例中, 将紧急业务突发数据的优先级分为 4个等级, 其中等级 1表示最 高优先级, 等级 4表示最低优先级, 等级 2和等级 3从高至低表示不同优先级。
如图 11所示, 站点 200在接收到来自上层的警报数据后, 生成紧急业务数据, 同 时刚好进入省电模式的醒来监听窗口。站点 200监听接入点 100广播的 beacon帧, 并 发现 beacon帧中有站点 200的下行数据通知。接入点 100向站点 200发送下行同步帧, 站点 200在接收到下行同步帧后,在等待 SIFS帧间间隔后,向接入点 100发送 PS-Poll 通知接入点 100自己已经可以接收下行数据。同时,站点 200将该 PS-Poll帧中的物理 帧头中的紧急突发事件指示 (Emergency Indication) 域设置为 1, 表示站点 200有对 应等级 1的紧急业务突发数据要发送。 接入点 100在接收到上述 PS-Poll无线帧后, 根据其 Emergency Indication域的值 以及接入点 100当前的负荷水平, 决定通知站点 200在一个延时 T后发送紧急业务突 发数据, 并在 SIFS帧间间隔后向站点 200回复一个 ACK帧, 并设置该 ACK的物理 帧头中的预定义的字段通知站点 200等待延时 T。 站点 200在接收到接入点 100发送的 ACK帧, 并检测到该短 ACK帧的物理帧头 中的预定义字段被设置为延时 Τ, 则站点 200等待延时 Τ。 站点 200在延时 Τ后按 CSMA/CA机制竞争信道, 在检测到信道空闲后, 向接入 点 100发送包含紧急业务突发数据的无线帧。 接入点 100接收到包含紧急业务突发数据的无线帧, 并在 SIFS帧间间隔后发送 ACK确认帧, 确认已经正确接收到上述包含紧急业务突发数据的无线帧。 实施例 6 如图 8所示, 站点 200是一个火警传感器设备 300的无线局域网模块。 在 300检 测到异常温度上升时, 自动生成包含温度异常指示的警报数据, 通过站点 200发送给 接入点 100, 进而发送到网络服务器。 在正常工作时, 站点 200处于更长省电模式。 在本实施例中, 将紧急业务突发数据的优先级分为两类, 分别表示属于紧急业务 突发数据, 或者不属于紧急业务突发数据。 如图 12所示, 站点 200在接收到来自上层的警报数据后, 生成紧急业务数据, 并 进入更长省电模式的监听状态。站点 200监听信道,在检测到信道空闲并允许发送数据 时, 向接入点 100发送一个短同步帧, 通知接入点 100自己已经醒来。 同时, 站点 200 将该短同步帧中的物理帧头中的 Emergency Indication域设置为 1, 表示站点 200有紧 急业务突发数据要发送。
接入点 100在接收到上述短同步帧后,根据其 Emergency Indication域的值以及接 入点 100当前的负荷水平, 决定通知站点 200等待一个延时 T, 并等待接入点 100先 发送下行数据, 再发送紧急业务突发数据。 接入点 100在 SIFS帧间间隔后向站点 200 回复一个 ACK帧, 并设置该 ACK的物理帧头中的预定义的字段通知站点 200等待延 时丁。 站点 200在接收到接入点 100发送的 ACK帧, 并检测到该短 ACK帧的物理帧头 中的预定义字段被设置为延时 Τ, 则站点 200等待延时 Τ。 接入点 100在延时 Τ后按 CSMA/CA机制竞争信道, 在检测到信道空闲后, 向站 点 200发送包含数据的下行无线帧。 站点 200接收到包含数据的下行无线帧, 并检测到该无线帧指示无后续下行数据 发送, 则在 SIFS帧间间隔后发送 ACK确认帧。 站点 200在 SIFS帧间间隔后发送包含紧急业务突发数据的无线帧。 通过上述实施例可以看出, 本发明实施例实现了以下有益效果: 站点在发送紧急业务突发数据前, 通知 AP按优先级进行上行数据发送的控制, 缩短了高优先级的紧急业务突发数据的发送延时, 降低了碰撞概率, 提高了紧急业务 突发数据发送的成功率。 在另外一个实施例中, 还提供了一种软件, 该软件用于执行上述实施例及优选实 施方式中描述的技术方案。 在另外一个实施例中, 还提供了一种存储介质, 该存储介质中存储有上述软件, 该存储介质包括但不限于: 光盘、 软盘、 硬盘、 可擦写存储器等。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而, 可以 将它们存储在存储装置中由计算装置来执行, 并且在某些情况下, 可以以不同于此处 的顺序执行所示出或描述的步骤, 或者将它们分别制作成各个集成电路模块, 或者将 它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明不限制于任 何特定的硬件和软件结合。
以上仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技术人 员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的任何 修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。 工业实用性 本发明实施例提供的上述技术方案, 可以应用业务数据的传输处理过程中, 采用 在发送指定业务类型的业务数据之前,向 AP发送用于指示所述 AP优先为发送所述指 定业务类型的业务数据分配无线传输资源的通知信息的技术手段,解决了相关技术中, 在紧急业务数据发送时, 由于 AP无法识别该突发数据优先级而导致的紧急突发数据 发送的延迟等技术问题, 从而降低了紧急业务数据的传输延迟, 同时提高了紧急业务 数据突发传输的成功率。
Claims
1. 一种业务数据的传输处理方法, 应用于无线局域网的站点, 包括:
获取所述站点需要发送的指定业务类型的业务数据;
向所述无线局域网的接入点 AP发送通知信息, 其中, 所述通知信息用于 指示所述 AP优先为发送所述指定业务类型的业务数据分配无线传输资源。
2. 根据权利要求 1所述的方法, 其中, 向所述 AP发送通知信息, 包括:
确定发送所述指定业务类型的业务数据的传输信道;
检测所述传输信道的信道状态;
在检测到所述信道状态为空闲时, 向所述 AP发送所述通知信息。
3. 根据权利要求 2所述的方法, 其中, 在检测到所述信道状态为空闲时, 向所述 AP发送所述通知信息, 包括: 在检测到所述信道状态在指定时间段内空闲和 /或随机时间段内空闲时, 向 所述 AP发送所述通知信息。
4. 根据权利要求 1所述的方法, 其中, 向所述 AP发送通知信息, 包括:
接收所述 AP发送的无线帧;
在接收到所述无线帧后的第一帧间间隔后, 向所述 AP发送所述通知信息。
5. 根据权利要求 1所述的方法, 其中, 向所述 AP发送通知信息, 包括:
获取所述 AP的指定时隙;
在所述指定时隙后向所述 AP发送所述通知信息。
6. 根据权利要求 1所述的方法, 其中, 向所述 AP发送通知信息之后, 包括: 接收来自所述 AP的响应信息, 其中, 所述响应信息用于指示所述站点按 照预设条件发送所述指定业务类型的业务数据。
7. 根据权利要求 6所述的方法, 其中, 所述预设条件包括以下至少之一: 在接收到所述响应消息后的第二预定帧间间隔后发送所述指定业务类型的 业务数据;
在预定时间段后发送所述指定业务类型的业务数据;
在接收到来自所述 AP 的指定无线帧后发送所述指定业务类型的业务数 据。
8. 根据权利要求 1所述的方法, 其中, 所述通知信息中携带有用于指示不同所述 指定业务类型的业务数据的优先级信息, 其中, 该优先级信息用于指示为不同 优先级的业务数据分配所述无线传输资源的优先级。
9. 根据权利要求 1至 8任一项所述的方法, 其中, 通过以下方式发送所述通知信 息- 通过在指定无线帧的预设比特信息位或预设信令位发送所述通知信息。
10. 根据权利要求 9所述的方法, 其中, 所述指定无线帧包括: 短无线帧, 其中, 该短无线帧仅包括: 物理层帧头和物理层帧尾。
11. 根据权利要求 10所述的方法,其中,所述预设比特信息位或所述预设信令位设 置在所述物理层帧头。
12. 一种业务数据的传输方法, 应用于无线局域网的接入点 AP, 包括: 接收来自所述无线局域网的站点的通知信息, 其中, 所述通知信息用于指 示所述 AP优先为发送所述指定业务类型的业务数据分配无线传输资源;
按照所述通知信息为发送所述指定业务类型的业务数据分配所述无线传输 资源。
13. 根据权利要求 12所述的方法,其中,接收来自所述站点的通知信息之后,包括:
向所述站点发送所述通知信息的响应信息, 其中, 所述响应信息用于指示 所述站点按照预设条件发送所述指定业务类型的业务数据。
14. 根据权利要求 13所述的方法, 其中, 所述预设条件包括以下至少之一: 在接收到所述响应消息后的第二预定帧间间隔后发送所述指定业务类型的 业务数据;
在预定时间段后发送所述指定业务类型的业务数据;
在接收到来自所述 AP 的指定无线帧后发送所述指定业务类型的业务数 据。
15. 根据权利要求 14所述的方法,其中,在预定时间段后发送所述指定业务类型的 业务数据时, 还包括:
向所述站点发送指定无线帧, 其中, 所述指定无线帧用于指示所述站点在 接收到所述无线帧的指定时间段后发送所述指定类型的业务数据。
16. 根据权利要求 12所述的方法,其中,所述通知信息中携带有用于指示不同所述 指定业务类型的业务数据的优先级信息, 其中, 该优先级信息用于指示为不同 优先级的业务数据分配所述无线传输资源的优先级。
17. 一种业务数据的传输处理装置, 应用于无线局域网的站点, 包括:
获取模块, 用于获取所述站点需要发送的指定业务类型的业务数据; 发送模块, 用于向所述无线局域网的接入点 AP发送通知信息, 其中, 所 述通知信息用于指示所述 AP优先为发送所述指定业务类型的业务数据分配无 线传输资源。
18. 根据权利要求 17所述的装置, 其中, 所述发送模块包括: 确定单元, 用于确定发送所述指定业务类型的业务数据的传输信道; 检测单元, 用于检测所述传输信道的信道状态;
第一发送单元, 用于在所述检测单元检测到所述信道状态为空闲时, 向所 述 AP发送所述通知信息。
19. 根据权利要求 17所述的装置, 其中, 所述第一发送单元, 用于在检测到所述信 道状态在指定时间段内空闲和 /或随机时间段内空闲时, 向所述 AP发送所述通 知信息。
20. 根据权利要求 17所述的装置, 其中, 所述发送模块包括:
接收单元, 用于接收所述 AP发送的无线帧;
第二发送单元,用于在接收到所述无线帧后的第一帧间间隔后, 向所述 AP 发送所述通知信息。
21. 根据权利要求 17所述的装置, 其中, 所述发送模块包括:
获取单元, 用于获取所述 AP的指定时隙;
第三发送单元, 用于在所述指定时隙后向所述 AP发送所述通知信息。
22. 根据权利要求 17所述的装置, 其中, 还包括:
接收模块, 用于接收来自所述 AP的响应信息, 其中, 所述响应信息用于 指示所述站点按照预设条件发送所述指定业务类型的业务数据。
23. 一种业务数据的传输装置, 应用于无线局域网的接入点 AP, 包括:
接收模块, 用于接收来自所述无线局域网的站点的通知信息, 其中, 所述 通知信息用于指示所述 AP优先为发送所述指定业务类型的业务数据分配无线 传输资源;
分配模块, 用于按照所述通知信息为发送所述指定业务类型的业务数据分 配所述无线传输资源。
24. 根据权利要求 23所述的装置, 其中, 还包括:
发送模块, 用于向所述站点发送所述通知信息的响应信息, 其中, 所述响 应信息用于指示所述站点按照预设条件发送所述指定业务类型的业务数据。
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ES2663238T3 (es) | 2018-04-11 |
EP2966924A1 (en) | 2016-01-13 |
EP2966924A4 (en) | 2016-02-24 |
US20160044693A1 (en) | 2016-02-11 |
CN104039016A (zh) | 2014-09-10 |
CN104039016B (zh) | 2019-08-13 |
EP2966924B1 (en) | 2017-12-20 |
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