WO2015109597A1 - 信道资源的分配方法及通信设备 - Google Patents

信道资源的分配方法及通信设备 Download PDF

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Publication number
WO2015109597A1
WO2015109597A1 PCT/CN2014/071575 CN2014071575W WO2015109597A1 WO 2015109597 A1 WO2015109597 A1 WO 2015109597A1 CN 2014071575 W CN2014071575 W CN 2014071575W WO 2015109597 A1 WO2015109597 A1 WO 2015109597A1
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WIPO (PCT)
Prior art keywords
access point
channel
time slot
contention frame
communication device
Prior art date
Application number
PCT/CN2014/071575
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English (en)
French (fr)
Inventor
伍天宇
Original Assignee
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.)
Filing date
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 EP14879330.0A priority Critical patent/EP3089541B1/en
Priority to CN201480026548.1A priority patent/CN105230104B/zh
Priority to PCT/CN2014/071575 priority patent/WO2015109597A1/zh
Publication of WO2015109597A1 publication Critical patent/WO2015109597A1/zh
Priority to US15/219,748 priority patent/US10091803B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • 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
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0808—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA
    • H04W74/0816—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA carrier sensing with collision avoidance
    • 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 embodiments of the present invention relate to the field of communications, and more specifically, to a method for allocating channel resources and a communication device. Background technique
  • the WLAN (Wireless Local Area Network) system operates on the unlicensed spectrum, so there may be other users sharing the spectrum on the channel. If multiple users send data at the same time, they may interfere with each other and cause conflicts.
  • the WLAN system adopts the CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) mode for collision avoidance.
  • Carrier Sense CS means that any device connected to the channel listens to the channel before it is ready to send data. Data can be sent when it is confirmed that the channel is idle.
  • Multiple access MA means that multiple devices can access channels at the same time, and data frames sent by one device can be received by multiple devices.
  • the CSMA/CA mechanism solves conflicts by actively avoiding collisions rather than passive detection, and can satisfy those that are difficult to accurately detect whether conflicts occur.
  • the CSMA works by sending a data frame when the device is ready to send a data frame and hears that the channel is idle, waiting for a random time to remain idle.
  • CDMA/CA mode of operation is less efficient. Especially in the case of dense deployment of APs (Access Points) and STAs (Stations), the probability of collision of channel competition is greatly increased, and the efficiency of MAC (Media Access Control) is greatly reduced. Summary of the invention
  • the present invention provides a method for allocating channel resources and a communication device, which provides an achievable manner for a communication system using an unlicensed spectrum.
  • the present invention provides a method for allocating a channel resource, including: the first device acquiring scheduling information from an access point; and if the first device is pre-scheduled by the access point in the first channel according to the scheduling information
  • the time slot receives data from the second device, and before the start time of the data transmission time corresponding to the first time slot of the first channel, the first device transmits the contention frame to compete for the first time slot of the first channel.
  • the method before the first device sends the contention frame, the method further includes: performing, by the first device, random backoff or according to service priority Randomly retreat.
  • the first device if the first device fails to receive data from the second device in the first time slot of the first channel, the first device requests to connect Incoming point rescheduling.
  • the present invention provides a method for allocating a channel resource, including: a second device acquiring scheduling information from an access point; a second device receiving at least one contention frame; and if the second device is accessed according to the scheduling information
  • the point pre-scheduling sends data to the at least one first device in the first time slot of the first channel, and the sending device of the first contention frame received by the second device belongs to the basic service set BSS where the access point is located, the second The device transmits data to the at least one first device in a first time slot of the first channel.
  • the method further includes: if the sending device of the first contention frame received by the second device does not belong to the BSS where the access point is located, the second The device remains silent during the data transmission time of the first time slot of the first channel.
  • the method further includes: the second device requesting the access point to re-schedule.
  • the second device keeps silent during the data transmission time of the first time slot of the first channel, including: the second device according to the first
  • the contention frame sets the network allocation vector NAV.
  • the second device does not transmit data on the first channel.
  • the method further includes: determining, by the second device, the first contention frame according to the address field of the first contention frame Whether the sending device belongs to the BSS where the access point is located.
  • the present invention provides a method for allocating a channel resource, including: a second device acquiring scheduling information from an access point; a second device receiving at least one contention frame; and if the second device is accessed according to the scheduling information
  • the point pre-scheduling sends data to the at least one first device in the first time slot of the first channel, and the sending device of each of the at least one contention frame belongs to the basic service set BSS where the access point is located,
  • the two devices transmit data to the at least one first device in a first time slot of the first channel.
  • the method further includes: if at least one of the sending devices of each of the at least one contention frame of the contention frame does not belong to the access point The BSS in which the second device is in the data transmission time of the first time slot of the first channel remains silent.
  • the method further includes: the second device requesting the access point to re-schedule.
  • the second device keeps silent during the data transmission time of the first time slot of the first channel, including: the second device according to at least one The contention frame sets the network allocation vector NAV. During the time corresponding to the NAV, the second device does not transmit data on the first channel.
  • the method further includes: determining, by the second device, the address field of each of the at least one contention frame Whether a transmitting device of a competitive frame belongs to the BSS where the access point is located.
  • the present invention provides a communication device, including: an acquiring unit, configured to acquire scheduling information from an access point; and a sending unit, if the communication device is pre-scheduled in the first channel by the access point according to the scheduling information
  • a time slot receives data from the second device for transmitting a contention frame before the start time of the data transmission time corresponding to the first time slot of the first channel to compete for the first time slot of the first channel.
  • the communications device further includes: a control unit, configured to control the communications device to perform random backoff or perform random backoff according to service priority.
  • the sending unit is further configured to: Request the access point to reschedule.
  • the present invention provides a communication device, including: an acquiring unit, configured to acquire scheduling information from an access point; a receiving unit, configured to receive at least one contention frame; and a sending unit, if the first communications device is configured according to the scheduling information Pre-scheduled by the access point to transmit data to the at least one first device in the first time slot of the first channel, and the sending device of the first contention frame received by the communication device belongs to the basic service set BSS where the access point is located And for transmitting data to the at least one first device in a first time slot of the first channel.
  • the communications device further includes: a control unit, if the sending device of the first contention frame received by the communications device does not belong to the BSS where the access point is located, The data transmission time for controlling the communication device in the first time slot of the first channel remains silent.
  • the sending unit is further configured to request the access point to re-schedule.
  • the control unit is specifically configured to: set a network allocation vector NAV according to the first contention frame, and control communication in a time corresponding to the NAV. The device does not send data on the first channel.
  • the communications device further includes: a determining unit, configured to determine, according to an address field of the first contention frame, the first contention Whether the transmitting device of the frame belongs to the BSS where the access point is located.
  • the sixth aspect of the present invention provides a communication device, including: an acquiring unit, configured to acquire scheduling information from an access point; a receiving unit, configured to receive at least one contention frame; and a sending unit, if the communication device is configured according to the scheduling information,
  • the access point is pre-scheduled to transmit data to the at least one first device in the first time slot of the first channel, and the sending device of each of the at least one contention frame belongs to the basic service set where the access point is located.
  • the BSS is configured to send data to the at least one first device in a first time slot of the first channel.
  • the communications device further includes: a control unit, if at least one of the sending devices of each of the at least one competitive frame does not belong to the transmitting device The BSS where the access point is located controls the communication device to remain silent during the data transmission time of the first time slot of the first channel.
  • the sending unit is further configured to request the access point to re-schedule.
  • control unit is specifically configured to: set a network allocation vector NAV according to the at least one contention frame, and control the communication device in a time corresponding to the NAV. Not sending data on the first channel.
  • the communications device further includes: a determining unit, configured to: according to an address field of each of the at least one contention frame, It is determined whether the transmitting device of each of the contention frames belongs to the BSS where the access point is located.
  • the scheduling mode is combined with the contention mode, and the access point may pre-schedule the first device, and the first device performs the data transmission start time in the corresponding time slot according to the scheduling information.
  • a competitive frame was sent to compete for the right to use the channel, reducing the number of potential competing devices and improving efficiency.
  • the present invention provides an achievable way to introduce a scheduling mode in a communication system using an unlicensed spectrum.
  • FIG. 1 is a schematic structural diagram of a communication system to which an embodiment of the present invention is applicable.
  • FIG. 2 is a schematic flowchart of a method for allocating channel resources according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method for allocating channel resources according to another embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a method for allocating channel resources according to another embodiment of the present invention.
  • FIG. 5 is a schematic diagram of dividing channel resources according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of dividing channel resources according to another embodiment of the present invention.
  • Figure 7 is a schematic block diagram of a communication device in accordance with one embodiment of the present invention.
  • FIG. 8 is a schematic block diagram of a communication device according to another embodiment of the present invention.
  • FIG. 9 is a schematic block diagram of a communication device according to another embodiment of the present invention.
  • FIG. 10 is a schematic block diagram of a communication device according to another embodiment of the present invention.
  • Figure 11 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • Figure 12 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention. detailed description
  • the access point is a network device that provides access services, for example, an AP in a WLAN system.
  • the site is the other end device that communicates to the access point through the wireless network.
  • the user equipment User Equipment, called "UE”
  • UE User Equipment
  • MS Mobile Terminal
  • this invention is not limited.
  • the following embodiments take the access point AP and the station STA as an example for description.
  • FIG. 1 is a schematic structural diagram of a communication system to which an embodiment of the present invention is applicable.
  • Figure 1 communication system The description is made by taking the first AP 110a covering the coverage 101a and the second AP 110b covering the coverage 101b as an example.
  • the number of the APs 110 is not limited in the embodiment of the present invention.
  • the first STA 120a accesses the first AP 110a
  • the second STA 120b accesses the second AP 110b
  • the first STA 120a and the second STA 120b are located within the coverage area 102 in which 101a and 101b overlap.
  • the number of STAs is not limited in the embodiment of the present invention.
  • the RTS/CTS Request to Send/Clear to Send
  • the station or access point reserves the channel before transmitting data.
  • the first AP 110a transmits an RTS frame before transmitting the data
  • the first STA 120a receives a CTS frame after receiving the RTS frame.
  • All other APs e.g., the second AP 110b
  • the STA e.g., the second STA 120b
  • the NAV Network Allocation Vector
  • the first AP 110a After the first AP 110a sends the RTS and receives the CTS that the first STA 120a responds, it obtains a transmission opportunity, during which the first AP 110a sends data to the first STA 120a without being interfered by the surrounding AP or STA.
  • the collision probability of the RTS frame is greatly increased, the length of the competition window is doubled after the collision, and the MAC efficiency is greatly reduced.
  • the system efficiency is also reduced.
  • both the first AP 110a and the second AP 110b operate in the scheduling mode and cannot cooperate with each other. It is assumed that the transmission resource scheduled when the first AP 110a communicates with the first STA 120a is the first channel, and the transmission resource invoked when the second AP 110b communicates with the second STA 120b is the second channel.
  • the first channel is the same as or similar to the second channel, strong mutual interference is formed, and both the first AP 110a and the second AP 110b have frequent communication errors. Therefore, neither the first AP nor the second AP can work normally.
  • the embodiment of the present invention provides an achievable manner for introducing a scheduling mode in a communication system using an unlicensed spectrum, which has high MAC efficiency and reduces interference to non-cooperatively scheduled AP data transmission.
  • FIG. 2 is a schematic flowchart of a method for allocating channel resources according to an embodiment of the present invention.
  • the method 20 can be performed by a recipient in the data transmission process, such as the AP 110 or the STA 120 shown in FIG.
  • the first device acquires scheduling information from an access point.
  • the first device may be the access point itself
  • the second device may be the STA
  • the first One device is the STA and the second device is the access point itself.
  • the access point is pre-scheduled to receive data from the second device in the first time slot of the first channel, at a start time of the data transmission time corresponding to the first time slot of the first channel.
  • the first device transmits a contention frame to compete for the first time slot of the first channel.
  • the scheduling mode is combined with the contention mode, and the access point may pre-schedule the first device, and the first device starts data transmission in the corresponding time slot according to the scheduling information.
  • the competitive frame is sent to compete for the right to use the channel, which reduces the number of potential competitive devices and improves efficiency.
  • the embodiment of the present invention provides an achievable manner for introducing a scheduling mode in a communication system using an unlicensed spectrum, and has a high MAC efficiency.
  • the first device (data receiver) transmits the contention frame without the second device transmitting the response frame, thereby reducing the signaling overhead of the system.
  • a part of time may be divided in some time slots or each time slot of the channel. Used for competition.
  • the scheduling information will only take effect if the competition is successful. In this way, the mutual interference between the non-cooperatively scheduled APs can be reduced, and the normal communication of the network is ensured.
  • the number of devices scheduled to be transmitted to the same time slot for data transmission and thus requiring channel competition is smaller than that of the non-scheduled scenario, so that the system overhead caused by channel competition can be reduced.
  • the second device obtains a transmission opportunity, and sends data to the first device in the first time slot of the first channel according to the scheduling information, at which time the scheduling information takes effect. Conversely, if the first device fails, the second device loses the transmission opportunity, and the scheduling information is invalid.
  • the first device may be an AP or a STA.
  • the AP may obtain the local scheduling information, or the STA may receive the scheduling information from the AP.
  • the time at which the first device transmits the contention frame is before the start time of the transmission data corresponding to the first time slot of the first channel, so that the scheduling information can take effect when the channel competition succeeds. For example, when the first time slot is divided into two parts of transmission data and channel contention, it is necessary to complete the competition before the start time of the transmission data of the first time slot.
  • the first device before the first device sends the contention frame, the first device may perform random backoff or perform random backoff according to the service priority.
  • the efficiency of the competition can be improved, especially when the random backoff is performed according to the service priority, which is more advantageous for the success of the equipment with higher priority service.
  • the first device if the first device fails to receive data in the first time slot of the first channel, the first device requests the access point to reschedule. In this case, if the first device fails to receive data from the second device in the first time slot of the first channel, it indicates that the first device has lost the channel this time, requesting the access point to re-schedule.
  • the first device sends a feedback message or request message to the access point to request access point rescheduling.
  • the access point allocates channel resources to the first device and sends scheduling information.
  • the first device competes for the channel again at the corresponding time according to the new scheduling information.
  • FIG. 3 is a schematic flowchart of a method for allocating channel resources according to another embodiment of the present invention.
  • the method 30 can be performed by a recipient in the data transmission process, such as AP 110 or STA 120 shown in FIG.
  • the second device acquires scheduling information from the access point.
  • the second device may be the access point itself, and the first device may be a STA, or the first device is a STA, and the second device is an access point itself.
  • the second device receives at least one contention frame.
  • the second device If the second device is pre-scheduled according to the scheduling information, the first time slot of the first channel is sent to the at least one first device, and the second device receives the first frame of the winning frame.
  • the basic service set BSS where the access point is located, the second device sends data to the at least one first device in the first time slot of the first channel.
  • the scheduling mode is combined with the competition mode, and the access point may pre-schedule the second device first.
  • the transmitting device that receives the first contention frame of the second device belongs to the BSS where the same access point is located, the second device sends data in the first time slot of the first channel.
  • Embodiments of the present invention provide an achievable manner for introducing a scheduling mode in a communication system using an unlicensed spectrum, and have a high MAC efficiency.
  • the first device (data receiver) transmits the contention frame without the second device transmitting the response frame, thereby reducing the signaling overhead of the system.
  • the method according to the embodiment of the present invention may be in some time slots or every channel.
  • the time slots divide a portion of the time for competition.
  • the scheduling information can take effect only when the competition is successful, that is, when the sending device that the second device receives the first contention frame belongs to the BSS where the same access point is located. In this way, mutual interference between the non-cooperatively scheduled APs can be reduced, and the normal communication of the network is ensured.
  • the number of devices that are scheduled to be transmitted to the same time slot for data transmission and thus requires channel competition is smaller than that of the non-scheduled scenario, so that the system overhead caused by channel competition can be reduced.
  • the sending device that receives the first contention frame of the second device belongs to the BSS where the same access point is located, the first device competes successfully, and the second device obtains a sending opportunity, according to the scheduling information.
  • the first time slot of a channel sends data to the first device, and the scheduling information takes effect.
  • the second device loses the opportunity to transmit this time, and the scheduling information fails.
  • the second device may be an AP or a STA.
  • the AP may obtain the local scheduling information, or the STA may receive the scheduling information from the AP.
  • the sending device of the first contention frame belongs to the BSS where the access point is located, that is, the access point is a service access point of the sending device, for example, the sending device is associated with the access point.
  • the sending device of the first contention frame received by the second device does not belong to the BSS where the access point is located, the data transmission time of the second device in the first time slot of the first channel Keep silent.
  • the second device remains silent in the first time slot of the first channel. , will not cause interference to other devices that have succeeded in the competition. It should be understood that in the embodiment of the present invention, the failure of the competition does not affect the data transmission of the second device on other channels.
  • the second device if the sending device of the first contention frame received by the second device does not belong to the BSS where the access point is located, the second device requests the access point to reschedule.
  • the receiving device of the first contention frame received does not belong to the access point
  • the BSS the second device sends a feedback message or a request message to the access point to request the access point to re-allocate. After receiving the feedback message or the request message, the access point allocates channel resources to the second device and delivers the scheduling information.
  • the second device when the second device keeps the data transmission time of the first time slot of the first channel, the second device sets the network allocation vector NAV according to the first contention frame, corresponding to the NAV. During the time, the second device does not send data on the first channel.
  • the second device determines, according to the address field of the first contention frame, whether the sending device of the first contention frame belongs to the BSS where the access point is located.
  • the second device detects an address field of the first contention frame, if the address field is associated with itself
  • the sending device of the contention frame belongs to the BSS where the access point is located. Otherwise, it does not belong to the BSS where the access point is located.
  • FIG. 4 is a schematic flowchart of a method for allocating channel resources according to another embodiment of the present invention.
  • the method 40 can be performed by a recipient in the data transmission process, such as AP 110 or STA 120 shown in FIG.
  • the second device acquires scheduling information from the access point.
  • the second device may be the access point itself, and the first device may be a STA, or the first device is a STA, and the second device is an access point itself.
  • the second device receives at least one contention frame.
  • the access point pre-schedules to send data to the at least one first device in the first time slot of the first channel, and the sending device of each of the at least one contention frame All belong to the basic service set BSS where the access point is located, and the second device sends data to the at least one first device in the first time slot of the first channel.
  • the scheduling mode is combined with the competition mode, and the access point may pre-schedule the second device first.
  • the transmitting device of the contention frame received by the second device belongs to the BSS where the associated access point is located, the second device transmits data in the first time slot of the first channel.
  • Embodiments of the present invention provide an achievable manner for introducing a scheduling mode in a communication system using an unlicensed spectrum, and have a high MAC efficiency.
  • the first device (data receiver) transmits the contention frame without the second device transmitting the response frame, thereby reducing the signaling overhead of the system.
  • a part of time may be divided in some time slots or each time slot of the channel. Used for competition.
  • the scheduling information can take effect only when the contention is successful, that is, the transmitting device of the contention frame received by the second device belongs to the BSS where the associated access point is located. In this way, mutual interference between the non-cooperatively scheduled APs can be reduced, and the normal communication of the network is ensured.
  • the number of devices that are scheduled to be transmitted to the same time slot for data transmission and thus requires channel competition is smaller than that of the non-scheduled scenario, so that the system overhead caused by channel competition can be reduced.
  • the sending device that the second device receives the at least one of the at least one contention frame belongs to the BSS where the same access point is located
  • the first device competes successfully, and the second device obtains one transmission.
  • the opportunity sends data to the first device in the first time slot of the first channel according to the scheduling information, and the scheduling information takes effect.
  • the second device loses the opportunity to transmit this time, and the scheduling information fails.
  • the second device may be an AP or a STA.
  • the AP may obtain the local scheduling information, or the STA may receive the scheduling information from the AP.
  • the BSS in which the transmitting device of the contention frame belongs to the access point means that the access point is a serving access point of the sending device, for example, the sending device is associated with the access point.
  • the second device is first in the first channel.
  • the data transmission time of the time slot remains silent.
  • the second device when the contention fails, that is, at least one of the transmitting devices of the contention frame received by the second device does not belong to the BSS where the access point is located, the second device remains in the first time slot of the first channel. Silence, will not interfere with other devices that compete for success. It should be understood that in the embodiment of the present invention, the failure of the competition does not affect the data transmission of the second device on other channels.
  • the second device requests the access point to re-schedule if at least one of the sending devices of each of the at least one contention frame does not belong to the BSS where the access point is located.
  • the second device sends a feedback message or a request message to the access point to request the access point to re-allocate.
  • the access point allocates channel resources to the second device and delivers the scheduling information.
  • the second device when the second device keeps the data transmission time of the first time slot of the first channel, the second device sets the network allocation vector NAV according to the at least one contention frame, corresponding to the NAV. During the time, the second device does not send data on the first channel.
  • the second device determines, according to an address field of each of the at least one contention frame, whether the sending device of each of the contention frames belongs to the BSS where the access point is located.
  • FIG. 5 is a schematic diagram of dividing channel resources according to an embodiment of the present invention.
  • each time slot of the channel resource is divided into two parts, one part is used for data transmission, and the other part is used for channel competition, and the uplink time slot and the downlink time slot of the data transmission time alternately appear.
  • Each AP pre-scheduled communication device that uses the channel resource performs data transmission, and each AP synchronizes uplink and downlink.
  • the time slot 3 is taken as an example.
  • the AP sends the scheduling information to the STA in the data transmission time (downlink time slot) of the time slot 2, and the AP acts as a device that is pre-scheduled to the time slot 3 to receive data according to the scheduling.
  • the information transmits a competing frame in the time of the time slot 2 to compete for time slot 3.
  • the AP can perform random backoff first.
  • the AP can simultaneously deliver the scheduling information of the time slot 4.
  • the STA scheduled to transmit data to slot 3 may receive multiple competing frames.
  • the STA may detect the address field of the first received competing frame, if the MAC address of the AP associated with itself. Similarly, the STA transmits data at the data transmission time of slot 3. Otherwise, the STA remains silent during the data transmission time of slot 3.
  • the STA that is pre-scheduled to the time slot 4 to receive data needs to broadcast the contention frame in the time of the time slot 3 to compete for the time slot 4. In this case, it is necessary to insert an uplink-downlink transition interval between the data transmission time (downlink time slot) of the time slot 2 and the contention time.
  • FIG. 6 is a schematic diagram of dividing channel resources according to another embodiment of the present invention.
  • each time slot is further divided into two parts, one for data transmission and one for channel competition.
  • Each AP pre-scheduled communication device that uses the channel resource performs data transmission, and each AP synchronizes uplink and downlink.
  • the time slot 1 is taken as an example, and it is assumed that the scheduling information of the time slot 1, the time slot 2, and the time slot 3 are all sent at the head of the time slot 1 or the tail of the previous time slot.
  • the contention time is placed before the data transmission time, and the STA that is pre-scheduled to the time slot 1 to receive the data transmits the contention frame at the time of the time slot 1 competition.
  • the STA can perform random backoff before transmitting the contention frame.
  • An AP that is scheduled to send data to slot 1 may receive multiple contention frames.
  • the AP can detect the address field of the first received frame. If it is the same as its own MAC address, the AP Send data in slot 1 (at this time, the AP can schedule this to all according to the scheduling information.
  • the STAs on the channels transmit data instead of being limited to transmitting data to the transmitting device of the contention frame. Otherwise, the AP remains silent during the data transmission time of the time slot.
  • channel resource division manners shown in FIG. 5 and FIG. 6 are only two implementation manners of the embodiments of the present invention, and other foreseeable channel resource division manners capable of implementing the method of the embodiment of the present invention should fall within the present invention. Within the scope of protection of the embodiments.
  • FIG. 7 is a schematic block diagram of a communication device in accordance with one embodiment of the present invention.
  • the communication device 70 of FIG. 7 includes an acquisition unit 701 and a transmission unit 702.
  • communication device 70 can be AP 110 or STA 120 as shown in FIG.
  • the obtaining unit 701 is configured to acquire scheduling information from the access point.
  • the sending unit 702 if the communication device is pre-scheduled according to the scheduling information, receives data from the second device in the first time slot of the first channel, and is used for data transmission time corresponding to the first time slot of the first channel. Before the start time, a competitive frame is sent to compete for the first time slot of the first channel.
  • the scheduling mode is combined with the competition mode, and the access point may pre-schedule the communication device, and the communication device sends the contention according to the scheduling information before the start time of the data transmission in the corresponding time slot.
  • Frames in order to compete for the use of the channel, reduce the number of potential devices and improve efficiency.
  • the embodiment of the present invention provides an achievable manner for introducing a scheduling mode in a communication system using an unlicensed spectrum, and has a high MAC efficiency.
  • the first device (data receiver) transmits the contention frame without the second device transmitting the response frame, thereby reducing the signaling overhead of the system.
  • a part of time may be allocated for some time slots or each time slot of the channel. Competition.
  • the scheduling information will only take effect if the competition is successful. In this way, the mutual interference between the non-cooperatively scheduled APs can be reduced, and the normal communication of the network is ensured.
  • the number of devices that are scheduled to be transmitted to the same time slot for data transmission and thus requires channel competition is smaller than that of the non-scheduled scenario, so that the system overhead caused by channel competition can be reduced.
  • the second device obtains a transmission opportunity, and sends data to the first device in the first time slot of the first channel according to the scheduling information, at which time the scheduling information takes effect. Conversely, if the first device fails, the second device loses the transmission opportunity, and the scheduling information is invalid.
  • the communication device can be an AP or an STA.
  • the AP may obtain local scheduling information, and It may be that the STA receives scheduling information from the AP.
  • the time at which the communication device transmits the contention frame is before the start time of the transmission data corresponding to the first time slot of the first channel, such that the scheduling information can take effect when the channel contention is successful.
  • the first time slot is divided into two parts of transmission data and channel contention, it is necessary to complete the competition before the start time of the transmission data of the first time slot.
  • the communications device 70 further includes: a control unit 703, configured to control the communications device to perform random backoff or perform random backoff according to service priority.
  • the sending unit 702 is further configured to request the access point to re-schedule.
  • the communication device fails to receive data in the first time slot of the first channel, it indicates that the communication device fails the current channel and requests the access point to reschedule.
  • FIG. 8 is a schematic block diagram of a communication device according to another embodiment of the present invention.
  • the communication device 80 of FIG. 8 includes an acquisition unit 801, a reception unit 802, and a transmission unit 803.
  • communication device 80 can be AP 110 or STA 120 as shown in FIG.
  • the obtaining unit 801 is configured to acquire scheduling information from the access point.
  • the receiving unit 802 is configured to receive at least one contention frame.
  • the device belongs to the basic service set BSS where the access point is located, and is configured to send data to the at least one first device in the first time slot of the first channel.
  • the scheduling mode is combined with the competition mode, and the access point may pre-schedule the communication device.
  • the transmitting device that the communication device receives the first contention frame belongs to the BSS where the same access point is located, the communication device transmits data in the first time slot of the first channel.
  • Embodiments of the present invention provide an achievable manner for introducing a scheduling mode in a communication system using an unlicensed spectrum, and have a high MAC efficiency.
  • the first device (data receiver) transmits the contention frame without the second device transmitting the response frame, thereby reducing the signaling overhead of the system.
  • some time slots or each time slot of the channel may be used. Part of the time is divided for competition.
  • the scheduling information can take effect only when the competition is successful, that is, when the sending device that the communication device receives the first contention frame belongs to the BSS where the same access point is located. In this way, mutual interference between the non-cooperatively scheduled APs can be reduced, and the normal communication of the network is ensured.
  • the number of devices that are scheduled to be transmitted to the same time slot for data transmission and thus requires channel competition is smaller than that of the non-scheduled scenario, so that the system overhead caused by channel competition can be reduced.
  • the sending device that receives the first contention frame of the second device belongs to the BSS where the same access point is located, the first device competes successfully, and the second device obtains a sending opportunity, according to the scheduling information.
  • the first time slot of a channel sends data to the first device, and the scheduling information takes effect.
  • the second device loses the opportunity to transmit this time, and the scheduling information fails.
  • the communication device can be an AP or a STA.
  • the AP may obtain the local scheduling information, or the STA may receive the scheduling information from the AP.
  • the BSS of the first contention frame belongs to the BSS where the access point is located.
  • the access point is the service access point of the sending device, for example, the sending device is associated with the access point.
  • the communications device 80 further includes: a control unit, if the sending device of the first contention frame received by the communications device does not belong to the BSS where the access point is located, and is used to control the communications device.
  • the data transmission time of the first time slot of a channel remains silent.
  • the communication device when the contention fails, that is, when the transmitting device of the first contention frame received by the communication device does not belong to the BSS where the access point is located, the communication device remains silent in the first time slot of the first channel, It will cause interference to other devices that have succeeded in the competition. It should be understood that in the embodiment of the present invention, the failure of the competition does not affect the data transmission of the second device on other channels.
  • the sending unit 803 is further configured to request the access point to re-schedule.
  • control unit 804 is specifically configured to set a network allocation vector NAV according to the first contention frame, and control the communication device not to send data in the first channel during the time corresponding to the NAV.
  • the communications device 80 further includes: a determining unit 805, configured to determine, according to an address field of the first contention frame, whether the sending device of the first contention frame belongs to the access point BSS.
  • a determining unit 805 configured to determine, according to an address field of the first contention frame, whether the sending device of the first contention frame belongs to the access point BSS.
  • the communication device 90 of FIG. 9 includes an acquisition unit 901, a reception unit 902, and a transmission unit 903.
  • the communication device 90 can It is the AP 110 or STA 120 shown in FIG.
  • the obtaining unit 901 is configured to acquire scheduling information from the access point.
  • the receiving unit 902 is configured to receive at least one contention frame.
  • the sending unit 903 if the communication device is pre-scheduled according to the scheduling information, sends data to the at least one first device in the first time slot of the first channel, and sends the contention frame of each of the at least one contention frame.
  • the devices belong to the basic service set BSS where the access point is located, and are used to send data to the at least one first device in the first time slot of the first channel.
  • the scheduling mode is combined with the competition mode, and the access point may pre-schedule the communication device.
  • the transmitting device of the contention frame received by the communication device belongs to the BSS where its associated access point is located, the communication device transmits data in the first time slot of the first channel.
  • Embodiments of the present invention provide an achievable manner for introducing a scheduling mode in a communication system using an unlicensed spectrum, and have a high MAC efficiency.
  • the first device (data receiver) transmits the contention frame without the second device transmitting the response frame, thereby reducing the signaling overhead of the system.
  • a part of time may be allocated for some time slots or each time slot of the channel. Competition.
  • the scheduling information can take effect only when the competition is successful, that is, when the sending device of the winning frame received by the communication device belongs to the BSS where the associated access point is located. In this way, the mutual interference between the non-cooperatively scheduled APs can be reduced, and the normal communication of the network is ensured.
  • the number of devices that are scheduled to be transmitted to the same time slot for data transmission and thus requires channel competition is smaller than that of the non-scheduled scenario, so that the system overhead caused by channel competition can be reduced.
  • the sending device that the second device receives the at least one of the at least one contention frame belongs to the BSS where the same access point is located
  • the first device competes successfully, and the second device obtains one transmission.
  • the opportunity sends data to the first device in the first time slot of the first channel according to the scheduling information, and the scheduling information takes effect.
  • the second device loses the opportunity to transmit this time, and the scheduling information is invalidated.
  • the communication device can be an AP or a STA.
  • the AP may obtain the local scheduling information, or the STA may receive the scheduling information from the AP.
  • the BSS in which the transmitting device of the contention frame belongs to the access point means that the access point is a serving access point of the sending device, for example, the sending device is associated with the access point.
  • the communications device 90 further includes: a control unit 904, if at least one of the sending devices of each of the at least one contention frame of the contention frame does not belong to the BSS where the access point is located And controlling the communication device to remain silent during the data transmission time of the first time slot of the first channel.
  • the second device when the contention fails, that is, at least one of the transmitting devices of the contention frame received by the second device does not belong to the BSS where the access point is located, the second device remains in the first time slot of the first channel. Silence, will not interfere with other devices that compete for success. It should be understood that in the embodiment of the present invention, the failure of the competition does not affect the data transmission of the second device on other channels.
  • the sending unit 903 is further configured to request Incoming point rescheduling.
  • control unit 904 is specifically configured to set a network allocation vector NAV according to the at least one contention frame, and control the communication device not to send data in the first channel in a time corresponding to the NAV.
  • the communications device 90 further includes: a determining unit 905, configured to determine, according to an address field of each of the at least one contention frame, whether the sending device of each of the contentive frames is Belongs to the BSS where the access point is located.
  • a determining unit 905 configured to determine, according to an address field of each of the at least one contention frame, whether the sending device of each of the contentive frames is Belongs to the BSS where the access point is located.
  • FIG. 10 is a schematic block diagram of a communication device according to another embodiment of the present invention.
  • the communication device 100 of FIG. 10 can be used to implement the steps and methods of the above method embodiments.
  • communication device 100 includes an antenna 1001, a transmitter 1002, a receiver 1003, a processor 1004, and a memory 1005.
  • the processor 1004 controls the operation of the communication device 100 and can be used to process signals.
  • Memory 1005 can include read only memory and random access memory and provides instructions and data to processor 1004.
  • Transmitter 1002 and receiver 1003 can be coupled to antenna 1001.
  • the various components of communication device 100 are coupled together by a bus system 1009, which in addition to the data bus includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 1009 in the figure.
  • communication device 100 can be AP 110 or STA 120 as shown in FIG.
  • the memory 1005 can store instructions to perform the following process:
  • the processor 1004 obtains scheduling information from the access point; if, according to the scheduling information, the receiver 1003 is pre-scheduled by the access point to receive data from the second device in the first time slot of the first channel, in the first time slot of the first channel Before the start time of the corresponding data transmission time, the transmitter 1002 sends a competition frame to Competing for the first time slot of the first channel.
  • the scheduling mode is combined with the competition mode, and the access point may pre-schedule the communication device, and the communication device sends the contention according to the scheduling information before the start time of the data transmission in the corresponding time slot.
  • Frames in order to compete for the use of the channel, reduce the number of potential devices and improve efficiency.
  • the embodiment of the present invention provides an achievable manner for introducing a scheduling mode in a communication system using an unlicensed spectrum, and has a high MAC efficiency.
  • the first device (data receiver) transmits the contention frame without the second device transmitting the response frame, thereby reducing the signaling overhead of the system.
  • a part of time may be allocated for some time slots or each time slot of the channel. Competition.
  • the scheduling information will only take effect if the competition is successful. In this way, the mutual interference between the non-cooperatively scheduled APs can be reduced, and the normal communication of the network is ensured.
  • the number of devices that are scheduled to be transmitted to the same time slot for data transmission and thus requires channel competition is smaller than that of the non-scheduled scenario, so that the system overhead caused by channel competition can be reduced.
  • the second device obtains a transmission opportunity, and sends data to the first device in the first time slot of the first channel according to the scheduling information, at which time the scheduling information takes effect. Conversely, if the first device fails, the second device loses the transmission opportunity, and the scheduling information is invalid.
  • the communication device can be an AP or a STA.
  • the AP may obtain the local scheduling information, or the STA may receive the scheduling information from the AP.
  • the time at which the communication device transmits the contention frame is before the start time of the transmission data corresponding to the first time slot of the first channel, such that the scheduling information can take effect when the channel contention is successful.
  • the first time slot is divided into two parts of transmission data and channel contention, it is necessary to complete the competition before the start time of the transmission data of the first time slot.
  • the memory 1005 may further store instructions to perform the following process: Before the transmitter 1002 transmits the contention frame, the communication device 100 performs random backoff or random backoff according to service priority.
  • the memory 1005 may further store instructions to perform the following process: If the receiver 1003 fails to receive data from the second device in the first time slot of the first channel, the processor 1004 requests the access point. Reschedule.
  • Figure 11 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • the communication device 110 of Figure 11 can be used to implement the various steps and methods of the above method embodiments.
  • communication device 110 includes an antenna 1101, a transmitter 1102, a receiver 1103, a processor 1104, and a memory 1105.
  • the processor 1104 controls the operation of the communication device 110 and can be used to process signals.
  • Memory 1105 can include read only memory and random access memory and provides instructions and data to processor 1104.
  • Transmitter 1102 and receiver 1103 can be coupled to antenna 1101.
  • the various components of communication device 110 are coupled together by a bus system 1109, which in addition to the data bus includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 1109 in the figure.
  • communication device 110 can be AP 110 or STA 120 as shown in FIG.
  • the memory 1105 can store instructions to perform the following process:
  • the processor 1104 obtains scheduling information from the access point; the receiver 1103 receives at least one contention frame; if the transmitter 1102 is pre-scheduled by the access point in the first time slot of the first channel to the at least one first device according to the scheduling information Transmitting data, and the transmitting device of the first contention frame received by the receiver 1103 belongs to the basic service set BSS where the access point is located, and the transmitter 1102 transmits data to the at least one first device in the first time slot of the first channel. .
  • the scheduling mode is combined with the competition mode, and the access point may pre-schedule the communication device.
  • the transmitting device that receives the first contention frame of the communication device belongs to the BSS where the same access point is located, the communication device transmits data in the first time slot of the first channel.
  • Embodiments of the present invention provide an achievable manner for introducing a scheduling mode in a communication system using an unlicensed spectrum, and have a higher MAC efficiency.
  • the first device (data receiver) transmits the contention frame without the second device transmitting the response frame, thereby reducing the signaling overhead of the system.
  • a part of time may be allocated for some time slots or each time slot of the channel. Competition.
  • the scheduling information can take effect only when the competition is successful, that is, when the sending device that the communication device receives the first contention frame belongs to the BSS where the same access point is located. In this way, the mutual interference between the non-cooperatively scheduled APs can be reduced, and the normal communication of the network is ensured.
  • the number of devices that are scheduled to be transmitted to the same time slot for data transmission and thus requires channel competition is smaller than that of the non-scheduled scenario, so that the system overhead caused by channel competition can be reduced.
  • the transmitting device that receives the first contention frame in the second device belongs to the same access point.
  • the second device obtains a transmission opportunity, and sends data to the first device in the first time slot of the first channel according to the scheduling information, and the scheduling information takes effect.
  • the second device loses the opportunity to transmit this time, and the scheduling information fails.
  • the communication device can be an AP or a STA.
  • the AP may obtain the local scheduling information, or the STA may receive the scheduling information from the AP.
  • the BSS of the first contention frame belongs to the BSS where the access point is located.
  • the access point is the service access point of the sending device, for example, the sending device is associated with the access point.
  • the memory 1105 may further store an instruction to perform the following process: if the sending device of the first contention frame received by the receiver 1103 does not belong to the access point
  • the BSS, transmitter 1102 remains silent for the data transmission time of the first time slot of the first channel.
  • the memory 1105 may further store an instruction to perform the following process: if the sending device of the first contention frame received by the receiver 1103 does not belong to the BSS where the access point is located, the processor 1104 requests The access point is rescheduled.
  • the memory 1105 may further store instructions to perform the following process: When the data transmission time of the first time slot of the first channel is kept silent by the transmitter 1102, the processor 1104 is based on the first competition. The frame sets the network allocation vector NAV, and the transmitter 1102 does not transmit data on the first channel during the time corresponding to the NAV.
  • the memory 1105 may further store an instruction to perform the following process:
  • the processor 1104 determines, according to an address field of the first contention frame, whether the sending device of the first contention frame belongs to the access point.
  • the BSS where it is located.
  • Figure 12 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • the communication device 120 of FIG. 12 can be used to implement the steps and methods in the above method embodiments.
  • communication device 120 includes an antenna 1201, a transmitter 1202, a receiver 1203, a processor 1204, and a memory 1205.
  • the processor 1204 controls the operation of the communication device 120 and can be used to process signals.
  • Memory 1205 can include read only memory and random access memory and provides instructions and data to processor 1204.
  • Transmitter 1202 and receiver 1203 can be coupled to antenna 1201.
  • the various components of communication device 120 are coupled together by a bus system 1209, which in addition to the data bus includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 1209 in the figure.
  • communication device 120 can be AP 110 or STA 120 shown in FIG.
  • the memory 1205 may store instructions to perform the following process:
  • the processor 1204 acquires scheduling information from the access point; the receiver 1203 receives at least one contention frame; if the transmitter 1202 is pre-scheduled by the access point in the first time slot of the first channel to the at least one first device according to the scheduling information Transmitting data, and the transmitting device of each of the at least one contention frame belongs to the basic service set BSS where the access point is located, and the transmitter 1202 sends the first time slot of the first channel to the at least one first device. data.
  • the scheduling mode is combined with the competition mode, and the access point may pre-schedule the communication device.
  • the transmitting device of the contention frame received by the communication device belongs to the BSS where its associated access point is located, the communication device transmits data in the first time slot of the first channel.
  • Embodiments of the present invention provide an achievable manner for introducing a scheduling mode in a communication system using an unlicensed spectrum, and have a high MAC efficiency.
  • the first device (data receiver) transmits the contention frame without the second device transmitting the response frame, thereby reducing the signaling overhead of the system.
  • a part of time may be allocated for some time slots or each time slot of the channel. Competition.
  • the scheduling information can take effect only when the competition is successful, that is, when the sending device of the winning frame received by the communication device belongs to the BSS where the associated access point is located. In this way, the mutual interference between the non-cooperatively scheduled APs can be reduced, and the normal communication of the network is ensured.
  • the number of devices that are scheduled to be transmitted to the same time slot for data transmission and thus requires channel competition is smaller than that of the non-scheduled scenario, so that the system overhead caused by channel competition can be reduced.
  • the sending device that the second device receives the at least one of the at least one contention frame belongs to the BSS where the same access point is located
  • the first device competes successfully, and the second device obtains one transmission.
  • the opportunity sends data to the first device in the first time slot of the first channel according to the scheduling information, and the scheduling information takes effect.
  • the second device loses the opportunity to transmit this time, and the scheduling information is invalidated.
  • the communication device can be an AP or a STA.
  • the AP may obtain the local scheduling information, or the STA may receive the scheduling information from the AP.
  • the BSS in which the transmitting device of the contention frame belongs to the access point means that the access point is a serving access point of the sending device, for example, the sending device is associated with the access point.
  • the memory 1205 may further store instructions to perform the following process: If at least one of the transmitting devices of each of the at least one contention frame does not belong to the BSS where the access point is located, the transmitter 1202 remains silent for the data transmission time of the first time slot of the first channel.
  • the memory 1205 may further store an instruction to: if at least one of the sending devices of each of the at least one contention frame of the contention frame does not belong to the access point The BSS, the processor 1204 requests the access point to reschedule.
  • the memory 1205 may further store instructions to perform the following process:
  • the processor 1204 is configured according to at least one contention frame.
  • the network allocation vector NAV is set, and the transmitter 1202 does not transmit data on the first channel during the time corresponding to the NAV.
  • the memory 1205 may further store instructions for performing the following process:
  • the processor 1204 determines, according to an address field of each of the at least one contention frame, a transmitting device of each of the contention frames. Whether it belongs to the BSS where the access point is located.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

Abstract

本发明公开了一种信道资源的分配方法及通信设备。该方法包括：第一设备从接入点获取调度信息；若第一设备根据调度信息，被接入点预调度在第一信道的第一时隙从第二设备接收数据，在第一信道的第一时隙对应的数据传输时间的起始时刻之前，第一设备发送竞争帧，以竞争第一信道的第一时隙。在本发明中，调度模式与竞争模式相结合，接入点可以先对第一设备进行预调度，第一设备根据调度信息，在对应时隙进行数据传输的起始时刻之前，发送竞争帧，以竞争该信道使用权，减少了潜在的竞争设备数，提高了效率。本发明为在使用非授权频谱的通信系统引入调度模式提供了一种可实现的方式。

Description

信道资源的分配方法及通信设备 技术领域
本发明实施例涉及通信领域， 并且更具体地， 涉及一种信道资源的分配 方法及通信设备。 背景技术
WLAN ( Wireless Local Area Network, 无线局域网 ) 系统工作在非授权 频谱上， 因而信道上可能存在其他用户共享频谱。 如果多个用户同时发送数 据， 可能相互干扰， 造成沖突。 目前， WLAN系统采用 CSMA/CA ( Carrier Sense Multiple Access with Collision Avoidance ,载波侦听多路访问 /沖突避免 ) 模式进行沖突避免。 载波侦听 CS是指任何连接到信道的设备在准备发送数 据前， 先对信道进行侦听。 当确认该信道空闲时， 才可以发送数据。 多路访 问 MA是指多个设备可以同时访问信道，一个设备发送的数据帧可以被多个 设备接收。 CSMA/CA机制采用主动避免碰撞而非被动侦测的方式来解决沖 突问题， 可以满足那些不易准确侦测是否有沖突发生的需求。 CSMA的工作 方式是， 在设备准备发送数据帧， 且侦听到信道空闲时， 再等待一段随机的 时间依然空闲时， 才发送数据帧。
然而， CDMA/CA工作模式效率较低。 尤其在 AP ( Access Point, 接入 点）和 STA ( Station, 站点） 密集部署的情况下， 信道竟争的沖突概率大大 增加， MAC ( Media Access Control, 媒体接入控制）效率大幅降低。 发明内容
本发明提供了一种信道资源的分配方法及通信设备， 为在使用非授权频 谱的通信系统 )入调度模式提供了一种可实现的方式。
第一方面， 本发明提供了一种信道资源的分配方法， 包括： 第一设备从 接入点获取调度信息； 若第一设备根据调度信息， 被接入点预调度在第一信 道的第一时隙从第二设备接收数据，在第一信道的第一时隙对应的数据传输 时间的起始时刻之前， 第一设备发送竟争帧， 以竟争第一信道的第一时隙。
结合第一方面， 在第一方面的第一种实现方式中， 在第一设备发送竟争 帧之前， 该分配方法还包括： 第一设备进行随机退避或者根据业务优先级进 行随机退避。
结合第一方面及其上述实现方式， 在第一方面的第二种实现方式中， 若 第一设备未能在第一信道的第一时隙从第二设备接收到数据， 第一设备请求 接入点重新调度。
第二方面， 本发明提供了一种信道资源的分配方法， 包括： 第二设备从 接入点获取调度信息； 第二设备接收至少一个竟争帧； 若第二设备根据调度 信息， 被接入点预调度在第一信道的第一时隙向至少一个第一设备发送数 据，且第二设备接收到的第一个竟争帧的发送设备属于接入点所在的基本服 务集 BSS, 第二设备在第一信道的第一时隙向至少一个第一设备发送数据。
结合第二方面， 在第二方面的第一种实现方式中， 该分配方法还包括： 若第二设备接收到的第一个竟争帧的发送设备不属于接入点所在的 BSS ,第 二设备在第一信道的第一时隙的数据传输时间保持静默。
结合第二方面及其上述实现方式， 在第二方面的第二种实现方式中， 该 分配方法还包括： 第二设备请求接入点重新调度。
结合第二方面及其上述实现方式， 在第二方面的第三种实现方式中， 第 二设备在第一信道的第一时隙的数据传输时间保持静默， 包括： 第二设备根 据第一个竟争帧设置网络分配矢量 NAV, 在 NAV对应的时间内， 第二设备 不在第一信道发送数据。
结合第二方面及其上述实现方式， 在第二方面的第四种实现方式中， 该 分配方法还包括： 第二设备根据第一个竟争帧的地址域， 确定第一个竟争帧 的发送设备是否属于接入点所在的 BSS。
第三方面， 本发明提供了一种信道资源的分配方法， 包括： 第二设备从 接入点获取调度信息； 第二设备接收至少一个竟争帧； 若第二设备根据调度 信息， 被接入点预调度在第一信道的第一时隙向至少一个第一设备发送数 据，且至少一个竟争帧中的每一个竟争帧的发送设备都属于接入点所在的基 本服务集 BSS ,第二设备在第一信道的第一时隙向至少一个第一设备发送数 据。
结合第三方面， 在第三方面的第一种实现方式中， 该分配方法还包括： 若至少一个竟争帧中的每一个竟争帧的发送设备中有至少一个发送设备不 属于接入点所在的 BSS ,第二设备在第一信道的第一时隙的数据传输时间保 持静默。 结合第三方面及其上述实现方式， 在第三方面的第二种实现方式中， 该 分配方法还包括： 第二设备请求接入点重新调度。
结合第三方面及其上述实现方式， 在第三方面的第三种实现方式中， 第 二设备在第一信道的第一时隙的数据传输时间保持静默， 包括： 第二设备根 据至少一个竟争帧设置网络分配矢量 NAV, 在 NAV对应的时间内， 第二设 备不在第一信道发送数据。
结合第三方面及其上述实现方式， 在第三方面的第四种实现方式中， 该 分配方法还包括： 第二设备根据至少一个竟争帧中的每一个竟争帧的地址 域， 确定每一个竟争帧的发送设备是否属于接入点所在的 BSS。
第四方面， 本发明提供了一种通信设备， 包括： 获取单元， 用于从接入 点获取调度信息； 发送单元， 若通信设备根据调度信息， 被接入点预调度在 第一信道的第一时隙从第二设备接收数据， 用于在第一信道的第一时隙对应 的数据传输时间的起始时刻之前，发送竟争帧，以竟争第一信道的第一时隙。
结合第四方面， 在第四方面的第一种实现方式中， 该通信设备还包括： 控制单元， 用于控制通信设备进行随机退避或者根据业务优先级进行随机退 避。
结合第四方面及其上述实现方式， 在第四方面的第二种实现方式中， 若 通信设备未能在第一信道的第一时隙从第二设备接收到数据， 发送单元， 还 用于请求接入点重新调度。
第五方面， 本发明提供了一种通信设备， 包括： 获取单元， 用于从接入 点获取调度信息； 接收单元， 用于接收至少一个竟争帧； 发送单元， 若第通 信设备根据调度信息，被接入点预调度在第一信道的第一时隙向至少一个第 一设备发送数据，且通信设备接收到的第一个竟争帧的发送设备属于接入点 所在的基本服务集 BSS ,用于在第一信道的第一时隙向至少一个第一设备发 送数据。
结合第五方面， 在第五方面的第一种实现方式中， 该通信设备还包括： 控制单元， 若通信设备接收到的第一个竟争帧的发送设备不属于接入点所在 的 BSS , 用于控制通信设备在第一信道的第一时隙的数据传输时间保持静 默。
结合第五方面及其上述实现方式， 在第五方面的第二种实现方式中， 发 送单元， 还用于请求接入点重新调度。 结合第五方面及其上述实现方式， 在第五方面的第三种实现方式中， 控 制单元， 具体用于根据第一个竟争帧设置网络分配矢量 NAV, 在 NAV对应 的时间内， 控制通信设备不在第一信道发送数据。
结合第五方面及其上述实现方式， 在第五方面的第四种实现方式中， 该 通信设备还包括： 确定单元， 用于根据第一个竟争帧的地址域， 确定第一个 竟争帧的发送设备是否属于接入点所在的 BSS。
第六方面， 本发明提供了一种通信设备， 包括： 获取单元， 用于从接入 点获取调度信息； 接收单元， 用于接收至少一个竟争帧； 发送单元， 若通信 设备根据调度信息，被接入点预调度在第一信道的第一时隙向至少一个第一 设备发送数据，且至少一个竟争帧中的每一个竟争帧的发送设备都属于接入 点所在的基本服务集 BSS,用于在第一信道的第一时隙向至少一个第一设备 发送数据。
结合第六方面， 在第六方面的第一种实现方式中， 该通信设备还包括： 控制单元， 若至少一个竟争帧中的每一个竟争帧的发送设备中有至少一个发 送设备不属于接入点所在的 BSS,控制通信设备在第一信道的第一时隙的数 据传输时间保持静默。
结合第六方面及其上述实现方式， 在第六方面的第二种实现方式中， 发 送单元， 还用于请求接入点重新调度。
结合第六方面及其上述实现方式， 在第六方面的第三种实现方式中， 控 制单元， 具体用于根据至少一个竟争帧设置网络分配矢量 NAV, 在 NAV对 应的时间内， 控制通信设备不在第一信道发送数据。
结合第六方面及其上述实现方式， 在第六方面的第四种实现方式中， 该 通信设备还包括： 确定单元， 用于根据至少一个竟争帧中的每一个竟争帧的 地址域， 确定每一个竟争帧的发送设备是否属于接入点所在的 BSS。
基于上述技术方案， 在本发明中， 调度模式与竟争模式相结合， 接入点 可以先对第一设备进行预调度， 第一设备根据调度信息， 在对应时隙进行数 据传输的起始时刻之前， 发送竟争帧， 以竟争该信道使用权， 减少了潜在的 竟争设备数， 提高了效率。 本发明为在使用非授权频谱的通信系统引入调度 模式提供了一种可实现的方式。 附图说明 为了更清楚地说明本发明实施例的技术方案， 下面将对本发明实施例中 所需要使用的附图作筒单地介绍， 显而易见地， 下面描述中的附图仅仅是本 发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动的 前提下， 还可以根据这些附图获得其他的附图。
图 1是本发明实施例可应用的通信系统的示意性结构图。
图 2是本发明一个实施例的信道资源的分配方法的示意性流程图。
图 3是本发明另一实施例的信道资源的分配方法的示意性流程图。
图 4是本发明另一实施例的信道资源的分配方法的示意性流程图。
图 5是本发明一个实施例的划分信道资源的示意图。
图 6是本发明另一实施例的划分信道资源的示意图。
图 7是本发明一个实施例的通信设备的示意性框图。
图 8是本发明另一实施例的通信设备的示意性框图。
图 9是本发明另一实施例的通信设备的示意性框图。
图 10是本发明另一实施例的通信设备的示意性框图。
图 11是本发明另一实施例的通信设备的示意性框图。
图 12是本发明另一实施例的通信设备的示意性框图。 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， 所描述的实施例是本发明的一部分实施例， 而不 是全部实施例。 基于本发明中的实施例， 本领域普通技术人员在没有作出创 造性劳动的前提下所获得的所有其他实施例， 都应属于本发明保护的范围。
应理解，本发明实施例的技术方案可以应用于使用非授权频谱资源的通 信系统中， 例如 WL AN系统。
还应理解， 在本发明实施例中， 接入点为提供接入服务的网络设备， 例 如， WLAN系统中的 AP。 站点为通过无线网络接入到接入点中进行通信的 另一端设备， 例如， 用户设备（User Equipment, 筒称为 "UE" )可称之为 终端 ( Terminal )、移动台 ( Mobile Station, 筒称为 "MS" )、移动终端 ( Mobile Terminal )等， 本发明并不限定。 但为描述方便， 下述实施例以接入点 AP 和站点 STA为例进行说明。
图 1是本发明实施例可应用的通信系统的示意性结构图。 图 1的通信系 统以覆盖范围为 101a的第一 AP llOa和覆盖范围为 101b的第二 AP 110b为 例进行描述。 但本发明实施例对 AP 110的数量不作限定。
第一 STA 120a接入到第一 AP 110a,第二 STA 120b接入到第二 AP 110b, 且第一 STA 120a和第二 STA 120b位于 101a与 101b重叠的覆盖范围 102内。 同样地， 本发明实施例对 STA的数量不作限定。
例如，在 CDMA/CA模式下，用 RTS/CTS( Request to Send/Clear to Send ) 协议来进行传输保护， 站点或者接入点在发送数据前先对信道进行预留。 第 一 AP 110a在发送数据前先发送 RTS帧， 第一 STA 120a收到 RTS帧后， 回 应一个 CTS帧。 所有收到 RTS或 CTS帧的其它 AP (例如， 第二 AP 110b ) 或 STA (例如， 第二 STA 120b )根据收到 RTS或 CTS 的指示设置 NAV ( Network Allocation Vector, 网络分配矢量）。 在 NAV对应的时间内， 这些 AP或 STA不能在对应信道上发送数据。第一 AP 110a发送 RTS并收到第一 STA 120a回应的 CTS后， 获得一个发送机会， 在这段时间内第一 APllOa 给第一 STA 120a发送数据不会受到周围 AP或 STA的干扰。
但是， 当 WLAN系统中 AP和 STA密集部署时， RTS帧的碰撞概率会 大大增加， 碰撞后竟争窗口长度加倍， MAC 效率大幅下降。 在系统开销较 大的同时， 还会导致系统效率降低。
又如，在将调度模式弓 I入到该通信系统中，第一 AP 110a与第二 AP 110b 均工作在调度模式下， 且不能相互协作。假设第一 AP llOa与第一 STA 120a 进行通信时调度的传输资源为第一信道， 第二 AP 110b与第二 STA 120b通 信时调用的传输资源为第二信道。 当第一信道与第二信道相同或频率相近 时， 形成强烈的相互干扰， 第一 AP llOa和第二 AP 110b都会出现频繁的通 信错误。 因此， 第一 AP与第二 AP都不能够正常工作。
本发明实施例为在使用非授权频谱的通信系统引入调度模式提供了一 种可实现的方式， 有着较高的 MAC效率， 同时减小了对非协作调度 AP数 据传输的干扰。
图 2是本发明一个实施例的信道资源的分配方法的示意性流程图。该方 法 20可以由数据传输过程中的接收方执行，例如，图 1所示的 AP 110或 STA 120。
201 , 第一设备从接入点获取调度信息。
例如， 第一设备可以为接入点本身， 这时第二设备可以为 STA, 或者第 一设备为 STA, 第二设备为接入点本身。
202, 若第一设备根据调度信息， 被接入点预调度在第一信道的第一时 隙从第二设备接收数据，在第一信道的第一时隙对应的数据传输时间的起始 时刻之前， 第一设备发送竟争帧， 以竟争第一信道的第一时隙。
本发明实施例的信道资源分配方法中， 调度模式与竟争模式相结合， 接 入点可以先对第一设备进行预调度， 第一设备根据调度信息， 在对应时隙进 行数据传输的起始时刻之前， 发送竟争帧， 以竟争该信道使用权， 减少了潜 在的竟争设备数， 提高了效率。 本发明实施例为在使用非授权频谱的通信系 统引入调度模式提供了一种可实现的方式， 有着较高的 MAC效率。
另外， 由第一设备（数据接收方）发送竟争帧， 而不需要第二设备发送 响应帧， 进而降低了系统的信令开销。
进一步地， 在各个接入点 AP使用调度模式， 但各个 AP之间不能进行 协作调度的场景下， 根据本发明实施例的方法， 可以在信道的一些时隙或每 个时隙划分出一部分时间用于竟争。 只有竟争成功时， 调度信息才能生效。 这样， 可以减小各个非协作调度的 AP之间的相互干扰， 保证了网络正常通 信。 同时， 被调度到同一时隙进行数据传输进而需要信道竟争的设备数量级 小于非调度场景下的竟争设备数量级， 因而可以减小信道竟争带来的系统开 销。
应理解， 如果第一设备竟争成功， 第二设备获得一次发送机会， 按照调 度信息在第一信道的第一时隙向第一设备发送数据， 此时该调度信息生效。 相反地， 如果第一设备竟争失败， 第二设备失去本次发送机会， 此时该调度 信息失效。
还应理解， 在 WALN网络中， 第一设备可以为 AP或者 STA。 相应地， 在第一设备从接入点获取调度信息时， 可以是 AP获取本地的调度信息， 也 可以是 STA从 AP接收调度信息。
还应理解， 第一设备发送竟争帧的时刻在第一信道的第一时隙对应的传 输数据的起始时刻之前， 这样， 在信道竟争成功时， 调度信息才能生效。 例 如， 在第一时隙划分为传输数据和信道竟争两部分时， 需要在第一时隙的传 输数据的起始时刻之前完成竟争。
可选地， 作为一个实施例， 在第一设备发送竟争帧之前， 第一设备还可 以进行随机退避或者根据业务优先级进行随机退避。 这样， 可以提高竟争效率， 尤其在按照业务优先级进行随机退避时， 更 利于优先级业务较高的设备竟争成功。
可选地， 作为另一实施例， 若第一设备未能在第一信道的第一时隙接收 到数据， 第一设备请求接入点重新调度。 在这种情况下， 若第一设备未能在 第一信道的第一时隙从第二设备接收到数据，说明第一设备本次信道竟争失 败， 请求接入点重新调度。
例如， 如果未能在第一信道的第一时隙从第二设备接收到数据， 第一设 备向接入点发送反馈消息或者请求消息， 以请求接入点重新调度。 接入点接 收到反馈消息或者请求消息后， 重新为第一设备分配信道资源， 并下发调度 信息。 第一设备接收到新的调度信息后， 根据新的调度信息在相应时间再次 竟争信道。
图 3是本发明另一实施例的信道资源的分配方法的示意性流程图。该方 法 30可以由数据传输过程中的接收方执行，例如，图 1所示的 AP 110或 STA 120。
301 , 第二设备从接入点获取调度信息。
例如， 第二设备可以为接入点本身， 这时第一设备可以为 STA, 或者第 一设备为 STA, 第二设备为接入点本身。
302, 第二设备接收至少一个竟争帧。
303 , 若第二设备根据调度信息， 被接入点预调度在第一信道的第一时 隙向至少一个第一设备发送数据，且第二设备接收到的第一个竟争帧的发送 设备属于接入点所在的基本服务集 BSS,第二设备在第一信道的第一时隙向 至少一个第一设备发送数据。
本发明实施例的信道资源分配方法中， 调度模式与竟争模式相结合， 接 入点可以先对第二设备进行预调度。在第二设备接收到第一个竟争帧的发送 设备属于同一个接入点所在的 BSS时，第二设备在第一信道的第一时隙发送 数据。本发明实施例为在使用非授权频谱的通信系统引入调度模式提供了一 种可实现的方式， 有着较高的 MAC效率。
另外， 由第一设备（数据接收方）发送竟争帧， 而不需要第二设备发送 响应帧， 进而降低了系统的信令开销。
进一步地， 在各个接入点 AP使用调度模式， 但各个 AP之间不能进行 协作调度的场景下， 根据本发明实施例的方法， 可以在信道的一些时隙或每 个时隙划分出一部分时间用于竟争。 只有竟争成功时， 也即第二设备接收到 第一个竟争帧的发送设备属于同一个接入点所在的 BSS时，调度信息才能生 效。 这样， 可以减小各个非协作调度的 AP之间的相互干扰， 保证了网络正 常通信。 同时， 被调度到同一时隙进行数据传输进而需要信道竟争的设备数 量级小于非调度场景下的竟争设备数量级， 因而可以减小信道竟争带来的系 统开销。
应理解，在第二设备接收到第一个竟争帧的发送设备属于同一个接入点 所在的 BSS时， 说明第一设备竟争成功， 第二设备获得一次发送机会， 按照 调度信息在第一信道的第一时隙向第一设备发送数据， 此时该调度信息生 效。 相反地， 第二设备失去本次发送机会， 此时该调度信息失效。
还应理解， 在 WALN网络中， 第二设备可以为 AP或者 STA。 相应地， 在第二设备从接入点获取调度信息时， 可以是 AP获取本地的调度信息， 也 可以是 STA从 AP接收调度信息。
还应理解， 第一个竟争帧的发送设备属于该接入点所在的 BSS 是指该 接入点为该发送设备的服务接入点， 例如， 该发送设备关联到该接入点。
可选地， 作为一个实施例， 若第二设备接收到的第一个竟争帧的发送设 备不属于接入点所在的 BSS, 第二设备在第一信道的第一时隙的数据传输时 间保持静默。
这样， 在竟争失败时， 也即第二设备接收到的第一个竟争帧的发送设备 不属于该接入点所在的 BSS时， 第二设备在第一信道的第一时隙保持静默， 不会对竟争成功的其它设备造成干扰。 应理解， 在本发明是实施例中， 竟争 失败时并不影响第二设备在其它信道的数据传输。
可选地， 作为另一实施例， 若第二设备接收到的第一个竟争帧的发送设 备不属于接入点所在的 BSS, 第二设备请求接入点重新调度。
例如， 如果接收到的第一个竟争帧的发送设备不属于接入点所在的
BSS, 第二设备向接入点发送反馈消息或者请求消息， 以请求接入点重新调 度。接入点接收到反馈消息或者请求消息后，重新为第二设备分配信道资源， 并下发调度信息。
可选地， 作为另一实施例， 在第二设备在第一信道的第一时隙的数据传 输时间保持静默时，第二设备根据第一个竟争帧设置网络分配矢量 NAV,在 NAV对应的时间内， 第二设备不在第一信道发送数据。 可选地， 作为另一实施例， 第二设备根据第一个竟争帧的地址域， 确定 第一个竟争帧的发送设备是否属于接入点所在的 BSS。
例如， 第二设备检测第一个竟争帧的地址域， 如果该地址域与自己关联
AP 的 MAC 地址相同， 则认为该竟争帧的发送设备属于该接入点所在的 BSS , 否则不属于该接入点所在的 BSS。
图 4是本发明另一实施例的信道资源的分配方法的示意性流程图。该方 法 40可以由数据传输过程中的接收方执行，例如，图 1所示的 AP 110或 STA 120。
401 , 第二设备从接入点获取调度信息。
例如， 第二设备可以为接入点本身， 这时第一设备可以为 STA, 或者第 一设备为 STA, 第二设备为接入点本身。
402, 第二设备接收至少一个竟争帧。
403 , 若第二设备根据调度信息， 被接入点预调度在第一信道的第一时 隙向至少一个第一设备发送数据，且至少一个竟争帧中的每一个竟争帧的发 送设备都属于接入点所在的基本服务集 BSS ,第二设备在第一信道的第一时 隙向至少一个第一设备发送数据。
本发明实施例的信道资源分配方法中， 调度模式与竟争模式相结合， 接 入点可以先对第二设备进行预调度。在第二设备接收到的竟争帧的发送设备 均属于其关联的接入点所在的 BSS时，第二设备在第一信道的第一时隙发送 数据。本发明实施例为在使用非授权频谱的通信系统引入调度模式提供了一 种可实现的方式， 有着较高的 MAC效率。
另外， 由第一设备（数据接收方）发送竟争帧， 而不需要第二设备发送 响应帧， 进而降低了系统的信令开销。
进一步地， 在各个接入点 AP使用调度模式， 但各个 AP之间不能进行 协作调度的场景下， 根据本发明实施例的方法， 可以在信道的一些时隙或每 个时隙划分出一部分时间用于竟争。 只有竟争成功时， 也即第二设备接收到 的竟争帧的发送设备均属于其关联的接入点所在的 BSS时，调度信息才能生 效。 这样， 可以减小各个非协作调度的 AP之间的相互干扰， 保证了网络正 常通信。 同时， 被调度到同一时隙进行数据传输进而需要信道竟争的设备数 量级小于非调度场景下的竟争设备数量级， 因而可以减小信道竟争带来的系 统开销。 应理解，在第二设备接收到至少一个竟争帧中的每一个竟争帧的发送设 备都属于同一个接入点所在的 BSS时，说明第一设备竟争成功，第二设备获 得一次发送机会， 按照调度信息在第一信道的第一时隙向第一设备发送数 据， 此时该调度信息生效。 相反地， 第二设备失去本次发送机会， 此时该调 度信息失效。
还应理解， 在 WALN网络中， 第二设备可以为 AP或者 STA。 相应地， 在第二设备从接入点获取调度信息时， 可以是 AP获取本地的调度信息， 也 可以是 STA从 AP接收调度信息。
还应理解， 竟争帧的发送设备属于该接入点所在的 BSS 是指该接入点 为该发送设备的服务接入点， 例如， 该发送设备关联到该接入点。
可选地， 作为一个实施例， 若至少一个竟争帧中的每一个竟争帧的发送 设备中有至少一个发送设备不属于接入点所在的 BSS,第二设备在第一信道 的第一时隙的数据传输时间保持静默。
这样， 在竟争失败时， 也即第二设备接收到的竟争帧的发送设备中至少 有一个不属于该接入点所在的 BSS时，第二设备在第一信道的第一时隙保持 静默， 不会对竟争成功的其它设备造成干扰。应理解，在本发明是实施例中， 竟争失败时并不影响第二设备在其它信道的数据传输。
可选地， 作为另一实施例， 若至少一个竟争帧中的每一个竟争帧的发送 设备中有至少一个发送设备不属于接入点所在的 BSS,第二设备请求接入点 重新调度。
例如， 如果接收到的第一个竟争帧的发送设备不属于接入点所在的 BSS, 第二设备向接入点发送反馈消息或者请求消息， 以请求接入点重新调 度。接入点接收到反馈消息或者请求消息后，重新为第二设备分配信道资源， 并下发调度信息。
可选地， 作为另一实施例， 在第二设备在第一信道的第一时隙的数据传 输时间保持静默时， 第二设备根据至少一个竟争帧设置网络分配矢量 NAV, 在 NAV对应的时间内， 第二设备不在第一信道发送数据。
可选地， 作为另一实施例， 第二设备根据至少一个竟争帧中的每一个竟 争帧的地址域， 确定每一个竟争帧的发送设备是否属于接入点所在的 BSS。
例如， 第二设备检测接收到的竟争帧的地址域， 如果该地址域与自己关 联 AP的 MAC地址相同， 则认为该竟争帧的发送设备属于该接入点所在的 BSS , 否则不属于该接入点所在的 BSS。
下面将结合具体的例子详细描述本发明实施例。 应注意， 这些例子只是 为了帮助本领域技术人员更好地理解本发明实施例， 而非限制本发明实施例 的范围。
图 5是本发明一个实施例的划分信道资源的示意图。
如图 5所示，信道资源的每个时隙划分为两部分，一部分用于数据传输， 一部分用于信道竟争， 数据传输时间的上行时隙和下行时隙交替出现。 使用 该信道资源的各个 AP预调度通信设备进行数据传输，各个 AP上下行同步。
这里以时隙 3为例进行说明， AP在时隙 2的数据传输时间内 （下行时 隙 )将调度信息下发到 STA, AP作为被预调度到时隙 3接收数据的设备， 根据该调度信息在时隙 2的竟争时间内发送竟争帧以竟争时隙 3。 在发送竟 争帧之前， AP可以先进行随机退避。 另外， 在时隙 2的下行时隙内， AP可 以同时下发时隙 4的调度信息。
被调度到时隙 3发送数据的 STA可能会接收到多个竟争帧， 这种情况 下， STA可以检测接收到的第一个竟争帧的地址域， 如果与自己关联的 AP 的 MAC地址相同， STA在时隙 3的数据传输时间发送数据。 否则， STA在 时隙 3的数据传输时间保持静默。 被预调度到时隙 4接收数据的 STA需要 在时隙 3的竟争时间内广播竟争帧， 以竟争时隙 4。 这种情况下， 需要在时 隙 2的数据传输时间 （下行时隙）与竟争时间之间插入上下行转换间隔。
图 6是本发明另一实施例的划分信道资源的示意图。
如图 6所示， 信道资源的上行时隙和下行时隙不是交替出现。 每个时隙 进一步划分为两部分， 一部分用于数据传输， 一部分用于信道竟争。 使用该 信道资源的各个 AP预调度通信设备进行数据传输， 各个 AP上下行同步。
这里以时隙 1为例进行说明， 假设时隙 1、 时隙 2和时隙 3的调度信息 都在时隙 1的头部或者上一个时隙的尾部下发。 这种情况下， 在对时隙进行 划分时， 将竟争时间放在数据传输时间之前， 被预调度到时隙 1接收数据的 STA在时隙 1的竟争时间发送竟争帧。 同样地， 在发送竟争帧之前， STA可 以进行随机退避。
被调度到时隙 1发送数据的 AP可能会接收到多个竟争帧，这种情况下， AP可以检测接收到的第一个竟争帧的地址域， 如果与自己的 MAC地址相 同， AP在时隙 1发送数据 （这时 AP可以按照调度信息向所有被调度到这 个信道上的 STA发送数据，而不是仅限于向该竟争帧的发送设备发送数据）。 否则， AP在时隙的数据传输时间内保持静默。
应理解， 图 5与图 6所示的信道资源划分方式仅仅是本发明实施例的两 种实施方式， 其它可预见的能够实现本发明实施例的方法的信道资源划分方 式都应落在本发明实施例的保护范围内。
图 7是本发明一个实施例的通信设备的示意性框图。图 7的通信设备 70 包括获取单元 701和发送单元 702。 例如， 通信设备 70可以为图 1所示的 AP 110或 STA 120。
获取单元 701 , 用于从接入点获取调度信息。
发送单元 702, 若通信设备根据调度信息， 被接入点预调度在第一信道 的第一时隙从第二设备接收数据， 用于在第一信道的第一时隙对应的数据传 输时间的起始时刻之前， 发送竟争帧， 以竟争第一信道的第一时隙。
在本发明实施例中， 调度模式与竟争模式相结合， 接入点可以先对通信 设备进行预调度， 通信设备根据调度信息， 在对应时隙进行数据传输的起始 时刻之前， 发送竟争帧， 以竟争该信道使用权， 减少了潜在的竟争设备数， 提高了效率。本发明实施例为在使用非授权频谱的通信系统引入调度模式提 供了一种可实现的方式， 有着较高的 MAC效率。
另外， 由第一设备（数据接收方）发送竟争帧， 而不需要第二设备发送 响应帧， 进而降低了系统的信令开销。
进一步地， 在各个接入点 AP使用调度模式， 但各个 AP之间不能进行 协作调度的场景下， 根据本发明实施例， 可以在信道的一些时隙或每个时隙 划分出一部分时间用于竟争。 只有竟争成功时， 调度信息才能生效。 这样， 可以减小各个非协作调度的 AP之间的相互干扰， 保证了网络正常通信。 同 时，被调度到同一时隙进行数据传输进而需要信道竟争的设备数量级小于非 调度场景下的竟争设备数量级， 因而可以减小信道竟争带来的系统开销。
应理解， 如果第一设备竟争成功， 第二设备获得一次发送机会， 按照调 度信息在第一信道的第一时隙向第一设备发送数据， 此时该调度信息生效。 相反地， 如果第一设备竟争失败， 第二设备失去本次发送机会， 此时该调度 信息失效。
还应理解， 在 WALN网络中， 通信设备可以为 AP或者 STA。 相应地， 在通信设备从接入点获取调度信息时， 可以是 AP获取本地的调度信息， 也 可以是 STA从 AP接收调度信息。
还应理解，通信设备发送竟争帧的时刻在第一信道的第一时隙对应的传 输数据的起始时刻之前， 这样， 在信道竟争成功时， 调度信息才能生效。 例 如， 在第一时隙划分为传输数据和信道竟争两部分时， 需要在第一时隙的传 输数据的起始时刻之前完成竟争。
可选地， 作为一个实施例， 该通信设备 70还包括： 控制单元 703 , 用于 控制通信设备进行随机退避或者根据业务优先级进行随机退避。
这样， 可以提高竟争效率， 尤其在按照业务优先级进行随机退避时， 更 利于优先级业务较高的设备竟争成功。
可选地， 作为另一实施例， 若通信设备未能在第一信道的第一时隙从第 二设备接收到数据， 发送单元 702, 还用于请求接入点重新调度。 在这种情 况下， 若通信设备未能在第一信道的第一时隙接收到数据， 说明通信设备本 次信道竟争失败， 请求接入点重新调度。
图 8是本发明另一实施例的通信设备的示意性框图。图 8的通信设备 80 包括获取单元 801、 接收单元 802和发送单元 803。 例如， 通信设备 80可以 为图 1所示的 AP 110或 STA 120。
获取单元 801 , 用于从接入点获取调度信息。
接收单元 802, 用于接收至少一个竟争帧。
发送单元 803 , 若第通信设备根据调度信息， 被接入点预调度在第一信 道的第一时隙向至少一个第一设备发送数据，且通信设备接收到的第一个竟 争帧的发送设备属于接入点所在的基本服务集 BSS,用于在第一信道的第一 时隙向至少一个第一设备发送数据。
在本发明实施例中， 调度模式与竟争模式相结合， 接入点可以先对通信 设备进行预调度。在通信设备接收到第一个竟争帧的发送设备属于同一个接 入点所在的 BSS时，通信设备在第一信道的第一时隙发送数据。本发明实施 例为在使用非授权频谱的通信系统引入调度模式提供了一种可实现的方式， 有着较高的 MAC效率。
另外， 由第一设备（数据接收方）发送竟争帧， 而不需要第二设备发送 响应帧， 进而降低了系统的信令开销。
进一步地， 在各个接入点 AP使用调度模式， 但各个 AP之间不能进行 协作调度的场景下， 根据本发明实施例， 可以在信道的一些时隙或每个时隙 划分出一部分时间用于竟争。 只有竟争成功时， 也即通信设备接收到第一个 竟争帧的发送设备属于同一个接入点所在的 BSS时，调度信息才能生效。这 样，可以减小各个非协作调度的 AP之间的相互干扰，保证了网络正常通信。 同时，被调度到同一时隙进行数据传输进而需要信道竟争的设备数量级小于 非调度场景下的竟争设备数量级， 因而可以减小信道竟争带来的系统开销。
应理解，在第二设备接收到第一个竟争帧的发送设备属于同一个接入点 所在的 BSS时， 说明第一设备竟争成功， 第二设备获得一次发送机会， 按照 调度信息在第一信道的第一时隙向第一设备发送数据， 此时该调度信息生 效。 相反地， 第二设备失去本次发送机会， 此时该调度信息失效。
还应理解， 在 WALN网络中， 通信设备可以为 AP或者 STA。 相应地， 在通信设备从接入点获取调度信息时， 可以是 AP获取本地的调度信息， 也 可以是 STA从 AP接收调度信息。
还应理解，第一个竟争帧的发送设备属于该接入点所在的 BSS是指该接 入点为该发送设备的服务接入点， 例如， 该发送设备关联到该接入点。
可选地， 作为一个实施例， 该通信设备 80还包括： 控制单元， 若通信 设备接收到的第一个竟争帧的发送设备不属于接入点所在的 BSS,用于控制 通信设备在第一信道的第一时隙的数据传输时间保持静默。
这样， 在竟争失败时， 也即通信设备接收到的第一个竟争帧的发送设备 不属于该接入点所在的 BSS时， 通信设备在第一信道的第一时隙保持静默， 不会对竟争成功的其它设备造成干扰。 应理解， 在本发明是实施例中， 竟争 失败时并不影响第二设备在其它信道的数据传输。
可选地， 作为另一实施例， 若通信设备接收到的第一个竟争帧的发送设 备不属于接入点， 发送单元 803 , 还用于请求接入点重新调度。
可选地， 作为另一实施例， 控制单元 804, 具体用于根据第一个竟争帧 设置网络分配矢量 NAV, 在 NAV对应的时间内， 控制通信设备不在第一信 道发送数据。
可选地， 作为另一实施例， 通信设备 80还包括： 确定单元 805 , 用于根 据第一个竟争帧的地址域，确定第一个竟争帧的发送设备是否属于接入点所 在的 BSS。
图 9是本发明另一实施例的通信设备的示意性框图。图 9的通信设备 90 包括获取单元 901、 接收单元 902和发送单元 903。 例如， 通信设备 90可以 为图 1所示的 AP 110或 STA 120。
获取单元 901 , 用于从接入点获取调度信息。
接收单元 902, 用于接收至少一个竟争帧。
发送单元 903, 若通信设备根据调度信息， 被接入点预调度在第一信道 的第一时隙向至少一个第一设备发送数据，且至少一个竟争帧中的每一个竟 争帧的发送设备都属于接入点所在的基本服务集 BSS,用于在第一信道的第 一时隙向至少一个第一设备发送数据。
在本发明实施例中， 调度模式与竟争模式相结合， 接入点可以先对通信 设备进行预调度。在通信设备接收到的竟争帧的发送设备均属于其关联的接 入点所在的 BSS时，通信设备在第一信道的第一时隙发送数据。本发明实施 例为在使用非授权频谱的通信系统引入调度模式提供了一种可实现的方式， 有着较高的 MAC效率。
另外， 由第一设备（数据接收方）发送竟争帧， 而不需要第二设备发送 响应帧， 进而降低了系统的信令开销。
进一步地， 在各个接入点 AP使用调度模式， 但各个 AP之间不能进行 协作调度的场景下， 根据本发明实施例， 可以在信道的一些时隙或每个时隙 划分出一部分时间用于竟争。 只有竟争成功时， 也即通信设备接收到的竟争 帧的发送设备均属于其关联的接入点所在的 BSS时，调度信息才能生效。这 样，可以减小各个非协作调度的 AP之间的相互干扰，保证了网络正常通信。 同时，被调度到同一时隙进行数据传输进而需要信道竟争的设备数量级小于 非调度场景下的竟争设备数量级， 因而可以减小信道竟争带来的系统开销。
应理解，在第二设备接收到至少一个竟争帧中的每一个竟争帧的发送设 备都属于同一个接入点所在的 BSS时，说明第一设备竟争成功，第二设备获 得一次发送机会， 按照调度信息在第一信道的第一时隙向第一设备发送数 据， 此时该调度信息生效。 相反地， 第二设备失去本次发送机会， 此时该调 度信息失效。
还应理解， 在 WALN网络中， 通信设备可以为 AP或者 STA。 相应地， 在通信设备从接入点获取调度信息时， 可以是 AP获取本地的调度信息， 也 可以是 STA从 AP接收调度信息。
还应理解，竟争帧的发送设备属于该接入点所在的 BSS是指该接入点为 该发送设备的服务接入点， 例如， 该发送设备关联到该接入点。 可选地， 作为一个实施例， 该通信设备 90还包括： 控制单元 904, 若至 少一个竟争帧中的每一个竟争帧的发送设备中有至少一个发送设备不属于 接入点所在的 BSS,控制通信设备在第一信道的第一时隙的数据传输时间保 持静默。
这样， 在竟争失败时， 也即第二设备接收到的竟争帧的发送设备中至少 有一个不属于该接入点所在的 BSS时，第二设备在第一信道的第一时隙保持 静默， 不会对竟争成功的其它设备造成干扰。应理解，在本发明是实施例中， 竟争失败时并不影响第二设备在其它信道的数据传输。
可选地， 作为另一实施例， 若至少一个竟争帧中的每一个竟争帧的发送 设备中有至少一个发送设备不属于接入点所在的 BSS, 发送单元 903 , 还用 于请求接入点重新调度。
可选地， 作为另一实施例， 控制单元 904, 具体用于根据至少一个竟争 帧设置网络分配矢量 NAV, 在 NAV对应的时间内， 控制通信设备不在第一 信道发送数据。
可选地， 作为另一实施例， 该通信设备 90还包括： 确定单元 905 , 用于 根据至少一个竟争帧中的每一个竟争帧的地址域，确定每一个竟争帧的发送 设备是否属于接入点所在的 BSS。
图 10是本发明另一实施例的通信设备的示意性框图。
图 10的通信设备 100可用于实现上述方法实施例中各步骤及方法。 图 10的实施例中， 通信设备 100包括天线 1001、 发射机 1002、 接收机 1003、 处理器 1004和存储器 1005。处理器 1004控制通信设备 100的操作， 并可用 于处理信号。 存储器 1005可以包括只读存储器和随机存取存储器， 并向处 理器 1004提供指令和数据。 发射机 1002和接收机 1003 可以耦合到天线 1001。 通信设备 100的各个组件通过总线系统 1009耦合在一起， 其中总线 系统 1009除包括数据总线之外， 还包括电源总线、 控制总线和状态信号总 线。但是为了清楚说明起见，在图中将各种总线都标为总线系统 1009。例如， 通信设备 100可以为图 1所示的 AP 110或 STA 120。
具体地， 存储器 1005可存储执行以下过程的指令：
处理器 1004从接入点获取调度信息； 若根据调度信息， 接收机 1003被 接入点预调度在第一信道的第一时隙从第二设备接收数据，在第一信道的第 一时隙对应的数据传输时间的起始时刻之前， 发射机 1002发送竟争帧， 以 竟争第一信道的第一时隙。
在本发明实施例中， 调度模式与竟争模式相结合， 接入点可以先对通信 设备进行预调度， 通信设备根据调度信息， 在对应时隙进行数据传输的起始 时刻之前， 发送竟争帧， 以竟争该信道使用权， 减少了潜在的竟争设备数， 提高了效率。本发明实施例为在使用非授权频谱的通信系统引入调度模式提 供了一种可实现的方式， 有着较高的 MAC效率。
另外， 由第一设备（数据接收方）发送竟争帧， 而不需要第二设备发送 响应帧， 进而降低了系统的信令开销。
进一步地， 在各个接入点 AP使用调度模式， 但各个 AP之间不能进行 协作调度的场景下， 根据本发明实施例， 可以在信道的一些时隙或每个时隙 划分出一部分时间用于竟争。 只有竟争成功时， 调度信息才能生效。 这样， 可以减小各个非协作调度的 AP之间的相互干扰， 保证了网络正常通信。 同 时，被调度到同一时隙进行数据传输进而需要信道竟争的设备数量级小于非 调度场景下的竟争设备数量级， 因而可以减小信道竟争带来的系统开销。
应理解， 如果第一设备竟争成功， 第二设备获得一次发送机会， 按照调 度信息在第一信道的第一时隙向第一设备发送数据， 此时该调度信息生效。 相反地， 如果第一设备竟争失败， 第二设备失去本次发送机会， 此时该调度 信息失效。
还应理解， 在 WALN网络中， 通信设备可以为 AP或者 STA。 相应地， 在通信设备从接入点获取调度信息时， 可以是 AP获取本地的调度信息， 也 可以是 STA从 AP接收调度信息。
还应理解，通信设备发送竟争帧的时刻在第一信道的第一时隙对应的传 输数据的起始时刻之前， 这样， 在信道竟争成功时， 调度信息才能生效。 例 如， 在第一时隙划分为传输数据和信道竟争两部分时， 需要在第一时隙的传 输数据的起始时刻之前完成竟争。
可选地， 作为一个实施例， 存储器 1005还可存储执行以下过程的指令： 在发射机 1002发送竟争帧之前， 通信设备 100进行随机退避或者根据 业务优先级进行随机退避。
可选地， 作为一个实施例， 存储器 1005还可存储执行以下过程的指令： 若接收机 1003未能在第一信道的第一时隙从第二设备接收到数据， 处 理器 1004请求接入点重新调度。 图 11是本发明另一实施例的通信设备的示意性框图。
图 11的通信设备 110可用于实现上述方法实施例中各步骤及方法。 图 11的实施例中， 通信设备 110包括天线 1101、 发射机 1102、 接收机 1103、 处理器 1104和存储器 1105。 处理器 1104控制通信设备 110的操作， 并可用 于处理信号。 存储器 1105可以包括只读存储器和随机存取存储器， 并向处 理器 1104提供指令和数据。发射机 1102和接收机 1103可以耦合到天线 1101。 通信设备 110的各个组件通过总线系统 1109耦合在一起，其中总线系统 1109 除包括数据总线之外， 还包括电源总线、 控制总线和状态信号总线。 但是为 了清楚说明起见， 在图中将各种总线都标为总线系统 1109。 例如， 通信设备 110可以为图 1所示的 AP 110或 STA 120。
具体地， 存储器 1105可存储执行以下过程的指令：
处理器 1104从接入点获取调度信息；接收机 1103接收至少一个竟争帧； 若根据调度信息， 发射机 1102被接入点预调度在第一信道的第一时隙向至 少一个第一设备发送数据， 且接收机 1103接收到的第一个竟争帧的发送设 备属于接入点所在的基本服务集 BSS, 发射机 1102在第一信道的第一时隙 向至少一个第一设备发送数据。
本发明实施例中， 调度模式与竟争模式相结合， 接入点可以先对通信设 备进行预调度。在通信设备接收到第一个竟争帧的发送设备属于同一个接入 点所在的 BSS时，通信设备在第一信道的第一时隙发送数据。本发明实施例 为在使用非授权频谱的通信系统引入调度模式提供了一种可实现的方式，有 着较高的 MAC效率。
另外， 由第一设备（数据接收方）发送竟争帧， 而不需要第二设备发送 响应帧， 进而降低了系统的信令开销。
进一步地， 在各个接入点 AP使用调度模式， 但各个 AP之间不能进行 协作调度的场景下， 根据本发明实施例， 可以在信道的一些时隙或每个时隙 划分出一部分时间用于竟争。 只有竟争成功时， 也即通信设备接收到第一个 竟争帧的发送设备属于同一个接入点所在的 BSS时，调度信息才能生效。这 样，可以减小各个非协作调度的 AP之间的相互干扰，保证了网络正常通信。 同时，被调度到同一时隙进行数据传输进而需要信道竟争的设备数量级小于 非调度场景下的竟争设备数量级， 因而可以减小信道竟争带来的系统开销。
应理解，在第二设备接收到第一个竟争帧的发送设备属于同一个接入点 时， 说明第一设备竟争成功， 第二设备获得一次发送机会， 按照调度信息在 第一信道的第一时隙向第一设备发送数据， 此时该调度信息生效。 相反地， 第二设备失去本次发送机会， 此时该调度信息失效。
还应理解， 在 WALN网络中， 通信设备可以为 AP或者 STA。 相应地， 在通信设备从接入点获取调度信息时， 可以是 AP获取本地的调度信息， 也 可以是 STA从 AP接收调度信息。
还应理解，第一个竟争帧的发送设备属于该接入点所在的 BSS是指该接 入点为该发送设备的服务接入点， 例如， 该发送设备关联到该接入点。
可选地， 作为一个实施例， 存储器 1105还可存储执行以下过程的指令： 若接收机 1103接收到的第一个竟争帧的发送设备不属于接入点所在的
BSS, 发射机 1102在第一信道的第一时隙的数据传输时间保持静默。
可选地， 作为另一实施例， 存储器 1105还可存储执行以下过程的指令： 若接收机 1103接收到的第一个竟争帧的发送设备不属于接入点所在的 BSS, 处理器 1104请求接入点重新调度。
可选地， 作为另一实施例， 存储器 1105还可存储执行以下过程的指令： 发射机 1102在第一信道的第一时隙的数据传输时间保持静默时， 处理 器 1104根据第一个竟争帧设置网络分配矢量 NAV, 在 NAV对应的时间内， 发射机 1102不在第一信道发送数据。
可选地， 作为另一实施例， 存储器 1105还可存储执行以下过程的指令： 处理器 1104根据第一个竟争帧的地址域， 确定第一个竟争帧的发送设 备是否属于接入点所在的 BSS。
图 12是本发明另一实施例的通信设备的示意性框图。
图 12的通信设备 120可用于实现上述方法实施例中各步骤及方法。 图 12的实施例中， 通信设备 120包括天线 1201、 发射机 1202、 接收机 1203、 处理器 1204和存储器 1205。处理器 1204控制通信设备 120的操作， 并可用 于处理信号。 存储器 1205可以包括只读存储器和随机存取存储器， 并向处 理器 1204提供指令和数据。 发射机 1202和接收机 1203 可以耦合到天线 1201。 通信设备 120的各个组件通过总线系统 1209耦合在一起， 其中总线 系统 1109除包括数据总线之外， 还包括电源总线、 控制总线和状态信号总 线。但是为了清楚说明起见，在图中将各种总线都标为总线系统 1209。例如， 通信设备 120可以为图 1所示的 AP 110或 STA 120。 具体地， 存储器 1205可存储执行以下过程的指令：
处理器 1204从接入点获取调度信息；接收机 1203接收至少一个竟争帧； 若根据调度信息， 发射机 1202被接入点预调度在第一信道的第一时隙向至 少一个第一设备发送数据，且至少一个竟争帧中的每一个竟争帧的发送设备 都属于接入点所在的基本服务集 BSS , 发射机 1202在第一信道的第一时隙 向至少一个第一设备发送数据。
在本发明实施例中， 调度模式与竟争模式相结合， 接入点可以先对通信 设备进行预调度。在通信设备接收到的竟争帧的发送设备均属于其关联的接 入点所在的 BSS时，通信设备在第一信道的第一时隙发送数据。本发明实施 例为在使用非授权频谱的通信系统引入调度模式提供了一种可实现的方式， 有着较高的 MAC效率。
另外， 由第一设备（数据接收方）发送竟争帧， 而不需要第二设备发送 响应帧， 进而降低了系统的信令开销。
进一步地， 在各个接入点 AP使用调度模式， 但各个 AP之间不能进行 协作调度的场景下， 根据本发明实施例， 可以在信道的一些时隙或每个时隙 划分出一部分时间用于竟争。 只有竟争成功时， 也即通信设备接收到的竟争 帧的发送设备均属于其关联的接入点所在的 BSS时，调度信息才能生效。这 样，可以减小各个非协作调度的 AP之间的相互干扰，保证了网络正常通信。 同时，被调度到同一时隙进行数据传输进而需要信道竟争的设备数量级小于 非调度场景下的竟争设备数量级， 因而可以减小信道竟争带来的系统开销。
应理解，在第二设备接收到至少一个竟争帧中的每一个竟争帧的发送设 备都属于同一个接入点所在的 BSS时，说明第一设备竟争成功，第二设备获 得一次发送机会， 按照调度信息在第一信道的第一时隙向第一设备发送数 据， 此时该调度信息生效。 相反地， 第二设备失去本次发送机会， 此时该调 度信息失效。
还应理解， 在 WALN网络中， 通信设备可以为 AP或者 STA。 相应地， 在通信设备从接入点获取调度信息时， 可以是 AP获取本地的调度信息， 也 可以是 STA从 AP接收调度信息。
还应理解，竟争帧的发送设备属于该接入点所在的 BSS是指该接入点为 该发送设备的服务接入点， 例如， 该发送设备关联到该接入点。
可选地， 作为一个实施例， 存储器 1205还可存储执行以下过程的指令： 若至少一个竟争帧中的每一个竟争帧的发送设备中有至少一个发送设 备不属于接入点所在的 BSS, 发射机 1202在第一信道的第一时隙的数据传 输时间保持静默。
可选地， 作为另一实施例， 存储器 1205还可存储执行以下过程的指令： 若至少一个竟争帧中的每一个竟争帧的发送设备中有至少一个发送设 备不属于接入点所在的 BSS, 处理器 1204请求接入点重新调度。
可选地， 作为另一实施例， 存储器 1205还可存储执行以下过程的指令： 发射机 1202在第一信道的第一时隙的数据传输时间保持静默时， 处理 器 1204根据至少一个竟争帧设置网络分配矢量 NAV, 在 NAV对应的时间 内， 发射机 1202不在第一信道发送数据。
可选地， 作为另一实施例， 存储器 1205还可存储执行以下过程的指令： 处理器 1204根据至少一个竟争帧中的每一个竟争帧的地址域， 确定每 一个竟争帧的发送设备是否属于接入点所在的 BSS。
应理解， 在本发明的各种实施例中， 上述各过程的序号的大小并不意味 着执行顺序的先后， 各过程的执行顺序应以其功能和内在逻辑确定， 而不应 对本发明实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到， 结合本文中所公开的实施例描述的各 示例的单元及算法步骤， 能够以电子硬件、 计算机软件或者二者的结合来实 现， 为了清楚地说明硬件和软件的可互换性， 在上述说明中已经按照功能一 般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执 行， 取决于技术方案的特定应用和设计约束条件。 专业技术人员可以对每个 特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超 出本发明的范围。
所属领域的技术人员可以清楚地了解到， 为了描述的方便和筒洁， 上述 描述的系统、 装置和单元的具体工作过程， 可以参考前述方法实施例中的对 应过程， 在此不再赘述。
在本申请所提供的几个实施例中， 应该理解到， 所揭露的系统、 装置和 方法， 可以通过其它的方式实现。 例如， 以上所描述的装置实施例仅仅是示 意性的， 例如， 所述单元的划分， 仅仅为一种逻辑功能划分， 实际实现时可 以有另外的划分方式， 例如多个单元或组件可以结合或者可以集成到另一个 系统， 或一些特征可以忽略， 或不执行。 另外， 所显示或讨论的相互之间的 耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或 通信连接， 也可以是电的， 机械的或其它的形式连接。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作 为单元显示的部件可以是或者也可以不是物理单元， 即可以位于一个地方， 或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或 者全部单元来实现本发明实施例方案的目的。
另外， 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中， 也可以是各个单元单独物理存在， 也可以是两个或两个以上单元集成在 一个单元中。 上述集成的单元既可以采用硬件的形式实现， 也可以采用软件 功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销 售或使用时， 可以存储在一个计算机可读取存储介质中。 基于这样的理解， 本发明的技术方案本质上或者说对现有技术做出贡献的部分， 或者该技术方 案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在 一个存储介质中， 包括若干指令用以使得一台计算机设备（可以是个人计算 机， 服务器， 或者网络设备等）执行本发明各个实施例所述方法的全部或部 分步骤。 而前述的存储介质包括： U盘、 移动硬盘、 只读存储器（ROM, Read-Only Memory )、 随机存取存储器 ( RAM, Random Access Memory )、 磁碟或者光盘等各种可以存储程序代码的介质。
以上所述， 仅为本发明的具体实施方式， 但本发明的保护范围并不局限 于此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易 想到各种等效的修改或替换， 这些修改或替换都应涵盖在本发明的保护范围 之内。 因此， 本发明的保护范围应以权利要求的保护范围为准。

Claims

权利要求
1、 一种信道资源的分配方法， 其特征在于， 包括：
第一设备从接入点获取调度信息；
若所述第一设备根据所述调度信息，被所述接入点预调度在第一信道的 第一时隙从第二设备接收数据，在所述第一信道的第一时隙对应的数据传输 时间的起始时刻之前， 所述第一设备发送竟争帧， 以竟争所述第一信道的第 一时隙。
2、 根据权利要求 1所述的分配方法， 其特征在于， 在所述第一设备发 送竟争帧之前， 还包括：
所述第一设备进行随机退避或者根据业务优先级进行随机退避。
3、 根据权利要求 1或 2所述的分配方法， 其特征在于， 还包括： 若所述第一设备未能在所述第一信道的第一时隙从所述第二设备接收 到数据， 所述第一设备请求所述接入点重新调度。
4、 一种信道资源的分配方法， 其特征在于， 包括：
第二设备从接入点获取调度信息；
所述第二设备接收至少一个竟争帧；
若所述第二设备根据所述调度信息，被所述接入点预调度在第一信道的 第一时隙向至少一个第一设备发送数据，且所述第二设备接收到的第一个竟 争帧的发送设备属于所述接入点所在的基本服务集 BSS,所述第二设备在第 一信道的第一时隙向所述至少一个第一设备发送数据。
5、 根据权利要求 4所述的分配方法， 其特征在于， 还包括：
若所述第二设备接收到的第一个竟争帧的发送设备不属于所述接入点 所在的 BSS , 所述第二设备在第一信道的第一时隙的数据传输时间保持静 默。
6、 根据权利要求 5所述的分配方法， 其特征在于， 还包括：
所述第二设备请求所述接入点重新调度。
7、 根据权利要求 5所述的分配方法， 其特征在于， 所述第二设备在第 一信道的第一时隙的数据传输时间保持静默， 包括：
所述第二设备根据所述第一个竟争帧设置网络分配矢量 NAV, 在所述 NAV对应的时间内， 所述第二设备不在所述第一信道发送数据。
8、 根据权利要求 4至 7中任一项所述的分配方法， 其特征在于， 还包 括：
所述第二设备根据所述第一个竟争帧的地址域，确定所述第一个竟争帧 的发送设备是否属于所述接入点所在的 BSS。
9、 一种信道资源的分配方法， 其特征在于， 包括：
第二设备从接入点获取调度信息；
所述第二设备接收至少一个竟争帧；
若所述第二设备根据所述调度信息，被所述接入点预调度在第一信道的 第一时隙向至少一个第一设备发送数据，且所述至少一个竟争帧中的每一个 竟争帧的发送设备都属于所述接入点所在的基本服务集 BSS,所述第二设备 在第一信道的第一时隙向所述至少一个第一设备发送数据。
10、 根据权利要求 9所述的分配方法， 其特征在于， 还包括： 若所述至少一个竟争帧中的每一个竟争帧的发送设备中有至少一个发 送设备不属于所述接入点所在的 BSS,所述第二设备在第一信道的第一时隙 的数据传输时间保持静默。
11、 根据权利要求 10所述的分配方法， 其特征在于， 还包括： 所述第二设备请求所述接入点重新调度。
12、 根据权利要求 10所述的分配方法， 其特征在于， 所述第二设备在 第一信道的第一时隙的数据传输时间保持静默， 包括：
所述第二设备根据所述至少一个竟争帧设置网络分配矢量 NAV,在所述 NAV对应的时间内， 所述第二设备不在所述第一信道发送数据。
13、 根据权利要求 9至 12中任一项所述的分配方法， 其特征在于， 还 包括：
所述第二设备根据所述至少一个竟争帧中的每一个竟争帧的地址域，确 定所述每一个竟争帧的发送设备是否属于所述接入点所在的 BSS。
14、 一种通信设备， 其特征在于， 包括：
获取单元， 用于从接入点获取调度信息；
发送单元， 若所述通信设备根据所述调度信息， 被所述接入点预调度在 第一信道的第一时隙从第二设备接收数据， 用于在所述第一信道的第一时隙 对应的数据传输时间的起始时刻之前， 发送竟争帧， 以竟争所述第一信道的 第一时隙。
15、 根据权利要求 14所述的通信设备， 其特征在于， 还包括： 控制单元， 用于控制所述通信设备进行随机退避或者根据业务优先级进 行随机退避。
16、 根据权利要求 14或 15所述的通信设备， 其特征在于， 若所述通信 设备未能在所述第一信道的第一时隙从所述第二设备接收到数据， 所述发送 单元， 还用于请求所述接入点重新调度。
17、 一种通信设备， 其特征在于， 包括：
获取单元， 用于从接入点获取调度信息；
接收单元， 用于接收至少一个竟争帧；
发送单元， 若所述第通信设备根据所述调度信息， 被所述接入点预调度 在第一信道的第一时隙向至少一个第一设备发送数据，且所述通信设备接收 到的第一个竟争帧的发送设备属于所述接入点所在的基本服务集 BSS ,用于 在第一信道的第一时隙向所述至少一个第一设备发送数据。
18、 根据权利要求 17所述的通信设备， 其特征在于， 还包括： 控制单元， 若所述通信设备接收到的第一个竟争帧的发送设备不属于所 述接入点所在的 BSS,用于控制所述通信设备在第一信道的第一时隙的数据 传输时间保持静默。
19、 根据权利要求 18所述的通信设备， 其特征在于， 所述发送单元， 还用于请求所述接入点重新调度。
20、 根据权利要求 18所述的通信设备， 其特征在于， 所述控制单元， 具体用于根据所述第一个竟争帧设置网络分配矢量 NAV, 在所述 NAV对应 的时间内， 控制所述通信设备不在所述第一信道发送数据。
21、 根据权利要求 17至 20中任一项所述的通信设备， 其特征在于， 还 包括：
确定单元， 用于根据所述第一个竟争帧的地址域， 确定所述第一个竟争 帧的发送设备是否属于所述接入点所在的 BSS。
22、 一种通信设备， 其特征在于， 包括：
获取单元， 用于从接入点获取调度信息；
接收单元， 用于接收至少一个竟争帧；
发送单元， 若所述通信设备根据所述调度信息， 被所述接入点预调度在 第一信道的第一时隙向至少一个第一设备发送数据，且所述至少一个竟争帧 中的每一个竟争帧的发送设备都属于所述接入点所在的基本服务集 BSS,用 于在第一信道的第一时隙向所述至少一个第一设备发送数据。
23、 根据权利要求 22所述的通信设备， 其特征在于， 还包括： 控制单元， 若所述至少一个竟争帧中的每一个竟争帧的发送设备中有至 少一个发送设备不属于所述接入点所在的 BSS ,控制所述通信设备在第一信 道的第一时隙的数据传输时间保持静默。
24、 根据权利要求 23所述的通信设备， 其特征在于， 所述发送单元， 还用于请求所述接入点重新调度。
25、 根据权利要求 23所述的通信设备， 其特征在于， 所述控制单元， 具体用于根据所述至少一个竟争帧设置网络分配矢量 NAV, 在所述 NAV对 应的时间内， 控制所述通信设备不在所述第一信道发送数据。
26、 根据权利要求 22至 25中任一项所述的通信设备， 其特征在于， 还 包括：
确定单元， 用于根据所述至少一个竟争帧中的每一个竟争帧的地址域， 确定所述每一个竟争帧的发送设备是否属于所述接入点所在的 BSS。
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