WO2013189293A1 - 通知上行数据发送的信道使用时间的方法、上行数据发送方法和设备 - Google Patents

通知上行数据发送的信道使用时间的方法、上行数据发送方法和设备 Download PDF

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Publication number
WO2013189293A1
WO2013189293A1 PCT/CN2013/077544 CN2013077544W WO2013189293A1 WO 2013189293 A1 WO2013189293 A1 WO 2013189293A1 CN 2013077544 W CN2013077544 W CN 2013077544W WO 2013189293 A1 WO2013189293 A1 WO 2013189293A1
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WO
WIPO (PCT)
Prior art keywords
indication message
terminal
access point
point device
message
Prior art date
Application number
PCT/CN2013/077544
Other languages
English (en)
French (fr)
Inventor
树贵明
权荣训
Original Assignee
华为终端有限公司
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 华为终端有限公司 filed Critical 华为终端有限公司
Priority to KR1020157000239A priority Critical patent/KR101605293B1/ko
Priority to ES13807226.9T priority patent/ES2620639T3/es
Priority to EP13807226.9A priority patent/EP2854435B1/en
Publication of WO2013189293A1 publication Critical patent/WO2013189293A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • H04W72/1263Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0212Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0212Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to communication technologies, and in particular, to a method for notifying a channel usage time of uplink data transmission, an uplink data transmission method, and a device.
  • an access point AP sends an indication information to a station (Station, STA) to indicate the start and end time of each STA to send uplink data, and the STA according to the time indicated by the AP, at a specified time. Enter the active state and send uplink data to the AP.
  • Embodiments of the present invention provide a method for notifying a channel usage time for uplink data transmission, an uplink data transmission method, and a device, which improve utilization of uplink data transmission time allocated by a network side.
  • an embodiment of the present invention provides a method for notifying a channel usage time for uplink data transmission, including:
  • the access point device sends a first indication message to the terminal, where the first indication message is used to indicate that the terminal is allowed to access the current channel, or the first indication message is used to indicate that the terminal has the access point device Downstream data; or the first indication message is used to indicate that the terminal is allowed to send uplink data; and the access point device receives the second indication sent by the terminal according to the first indication message
  • the second indication message is used to indicate that the terminal is to send uplink data
  • the access point device After receiving the second indication message, the access point device sends a third indication message to the terminal, where the third indication message carries channel usage time information; the channel usage time information is used to indicate the location The channel usage time at which the terminal transmits uplink data.
  • the second indication message carries the data amount of the uplink data of the terminal or the transmission time information of the uplink data.
  • the method further includes: the access point device according to the second indication message
  • the data amount of the uplink data carried or the transmission time information of the uplink data is used to determine the channel usage time information.
  • the sending, by the access point device, the third indication message to the terminal includes: the access point device sending a broadcast message to the terminal, where the broadcast message carries the channel use time information Or the access point device sends a first acknowledgement message to the second indication message to the terminal, where the first acknowledgement message carries the channel use time information.
  • the method further includes: sending, by the access point device, the And a second confirmation message of the second indication message, where the second confirmation message is used to indicate that the access point device receives the second indication message.
  • the first indication message further includes: a sending time information of the second indication message, where the sending time information of the second indication message is used to indicate a time when the terminal sends the second indication message .
  • the first indication message further carries: the access point device sends time information of the third indication message to the terminal, so that the terminal sends the time to the access point device
  • the second indication message then enters a sleep state, and enters an awake state from a sleep state before receiving the third indication message sent by the access point device.
  • the embodiment of the invention further provides an uplink data sending method, including:
  • the terminal sends a second indication message to the access point device according to the first indication message, where the second indication message is used to indicate that the terminal is to send uplink data.
  • the terminal receives a third indication message that is sent by the access point device after receiving the second indication message, where the third indication message carries channel usage time information; the channel usage time information is used to indicate the The channel usage time at which the terminal sends uplink data;
  • the method before the sending, by the terminal, the second indication message to the access point device according to the first indication message, the method further includes: determining, by the terminal, a data quantity of uplink data or transmission time information of uplink data;
  • the second indication message sent by the terminal to the access point device carries the data amount of the uplink data or the sending time information of the uplink data, so that the access point device according to the data of the uplink data
  • the transmission time information of the quantity or uplink data determines the channel usage time information.
  • the third indication message is specifically a broadcast message sent by the access point device, where the broadcast message carries the channel usage time information; the terminal receives the sending by the access point device
  • the third indication message is: the terminal receives the broadcast message sent by the access point device; or the third indication message is specifically the first that is sent by the access point device to the second indication message.
  • An acknowledgement message, the first acknowledgment message carries the channel usage time information; the third indication message sent by the terminal to the access point device is: the terminal receives the location sent by the access point device
  • the first confirmation message is described.
  • the method further includes: the terminal receiving, by the access point device, the second And a second confirmation message indicating the message, where the second confirmation message is used to indicate that the access point device receives the second indication message.
  • the first indication message further includes: a sending time information of the second indication message, where the sending time information of the second indication message is used to indicate a time when the terminal sends the second indication message Transmitting, by the terminal, the second indication message to the access point device according to the first indication message, specifically: sending, by the terminal, the sending time information of the second indication message carried in the first indication message Sending the second indication message to the access point device.
  • the first indication message further carries: the access point device sends time information of the third indication message to the terminal; the terminal sends the message according to the first indication message
  • the method further includes: the terminal entering a dormant state; and the receiving, by the terminal, the third indication message sent by the access point device after receiving the second indication message, : The terminal enters an awake state from a sleep state.
  • an embodiment of the present invention provides an access point device, including:
  • a transmitter configured to send a first indication message to the terminal, where the first indication message is used to indicate that the terminal is allowed to access the current channel; or the first indication message is used to indicate that the terminal is in the access point device There is downlink data; or the first indication message is used to indicate that the terminal is allowed to send uplink data, and the receiver is configured to receive a second indication message that is sent by the terminal according to the first indication message, where the second indication is The message is used to indicate that the second terminal is to send uplink data.
  • the transmitter is further configured to: after the receiver receives the second indication message, send a third indication message to the terminal, where the third indication message carries channel usage time information; The time information is used to indicate a channel usage time at which the terminal sends uplink data.
  • the second indication message received by the receiver carries the data amount of the uplink data of the terminal or the transmission time information of the uplink data.
  • the access point device as described above, further comprising: a processor, configured to determine the channel usage time information according to the data amount of the uplink data or the transmission time information of the uplink data carried in the second indication message.
  • the transmitter is specifically configured to: send a broadcast message to the terminal, where the broadcast message carries the channel use time information; or send the second to the terminal And indicating the first acknowledgement message of the message, where the first acknowledgement message carries the channel use time information.
  • the access point device is further configured to: after the receiver receives the second indication message sent by the terminal, send a second acknowledgement to the second indication message to the terminal.
  • the second acknowledgement message is used to indicate that the access point device receives the second indication message.
  • the first indication message sent by the sender further carries: a sending time information of the second indication message, where the sending time information of the second indication message is used to indicate that the terminal sends The sending time of the second indication message.
  • the first indication message sent by the sender further carries: the sender sends time information of the third indication message to the terminal, so that the terminal is located at the terminal After the access point device sends the second indication message, enters a dormant state, and sends the sender to send The third indication message before entering the awake state from the sleep state.
  • An embodiment of the present invention provides a terminal, including:
  • a receiver configured to receive a first indication message sent by the access point device, where the first indication message is used to indicate that the terminal is allowed to access the current channel; or the first indication message is used to indicate that the terminal is in the The access point device has downlink data; or the first indication message is used to indicate that the terminal is allowed to send uplink data;
  • a transmitter configured to send, according to the first indication message, a second indication message to the access point device, where the second indication message is used to indicate that the terminal is to send uplink data;
  • the receiver is further configured to receive a third indication message that is sent by the access point device after receiving the second indication message, where the third indication message carries channel usage time information; Channel usage time for instructing the terminal to send uplink data;
  • the transmitter is further configured to send uplink data to the access point device according to the channel usage time information.
  • the terminal further includes: a processor, configured to determine a data volume of the uplink data or a sending time information of the uplink data, where the transmitter carries the second indication message sent by the access point device The data amount of the uplink data or the transmission time information of the uplink data, so that the access point device determines the channel use time information according to the data amount of the uplink data or the transmission time information of the uplink data.
  • a processor configured to determine a data volume of the uplink data or a sending time information of the uplink data, where the transmitter carries the second indication message sent by the access point device The data amount of the uplink data or the transmission time information of the uplink data, so that the access point device determines the channel use time information according to the data amount of the uplink data or the transmission time information of the uplink data.
  • the third indication message is specifically a broadcast message sent by the access point device, where the broadcast message carries the channel usage time information; the receiver is specifically configured to: receive the connection The broadcast message sent by the ingress device; or the third indication message is specifically a first acknowledgement message sent by the access point device to the second indication message, where the first acknowledgement message carries The channel usage time information is used by the receiver.
  • the receiver is specifically configured to: receive the first acknowledgement message sent by the access point device.
  • the receiving end is further configured to: receive a second acknowledgement message sent by the access point device to the second indication message, where the second acknowledgement message is used to indicate the access point The device receives the second indication message.
  • the first indication message received by the receiver further includes: a sending time information of the second indication message, where the sending time information of the second indication message is used to instruct the terminal to send the a second indication message; the sender is specifically configured to: according to the first indication message The sending time information of the second indication message carried in the second indication message is sent to the access point device.
  • the terminal further includes: the access point device sends time information of the third indication message to the terminal; the processor is further configured to: in the transmitter After the second indication message is sent to the access point device, the terminal is controlled to enter a sleep state; the processor is further configured to: control the terminal before the receiver receives the third indication message From the sleep state to the awake state.
  • a method for notifying a channel usage time for uplink data transmission, an uplink data transmission method, and a device are provided by the embodiments of the present invention.
  • the access point device After the access point device sends an indication message for instructing the terminal to send the uplink data to the terminal, if the terminal receives the indication message for indicating the uplink data to be sent according to the indication message for sending the uplink data, the terminal sends the indication message to the terminal.
  • the channel usage time information used for transmitting the uplink data improves the utilization rate of the uplink data transmission time allocated by the access point device.
  • FIG. 1 is a flowchart of an embodiment of a method for notifying a channel usage time of uplink data transmission according to the present invention
  • FIG. 2 is a flowchart of another embodiment of an uplink data sending method according to the present invention
  • FIG. 3 is a flowchart of another embodiment of an uplink data sending method according to the present invention
  • FIG. 4 is a STA1 of an AP to STA provided by the present invention
  • STA2 and STA3 are schematic diagrams of an embodiment of performing uplink data transmission using a PSMP broadcast frame;
  • FIG. 5 is a schematic diagram of still another embodiment of an AP performing a uplink data transmission by using a PSMP broadcast frame by STAs, STA2, and STA3 of a STA according to the present invention
  • FIG. 6 is a schematic structural diagram of a MAC frame provided by the present invention.
  • FIG. 7 is a schematic diagram of an AP provided by the present invention to a STA, a STA2, and a STA3 of a STA, respectively, to send a second acknowledgement message to complete uplink data transmission;
  • FIG. 8 is a schematic structural diagram of an embodiment of an access point device according to the present invention.
  • FIG. 9 is a schematic structural diagram of still another embodiment of an access point device according to the present invention.
  • FIG. 10 is a schematic structural diagram of an embodiment of a terminal provided by the present invention.
  • FIG. 11 is a schematic structural diagram of still another embodiment of a terminal provided by the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
  • the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDM Orthogonal Frequency OFDM (Orthogonal Frequency Division Multiple Access) system
  • SC-FDMA single carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the terminal involved in the present application may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connection function, or other device connected to the wireless modem. Processing equipment.
  • the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a mobile computer device For example, it may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges voice and/or data with a wireless access network.
  • a radio access network eg, RAN, Radio Access Network
  • the wireless terminal may also be called a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile STA, a STA, a Remote Station, and an Access Point. , Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • the access point device involved in the present application may be an access point (AP) in a WLAN, or may be a base station (Base Transceiver Station, BTS) in a GSM network, a GPRS network, or a CDMA network, or may be A base station (NodeB) in a CDMA2000 network or a WCDMA network may also be an Evolved NodeB (eNB) in an LTE network, or may be an access service network base station (ASSN) in a WiMAX network.
  • a network element such as BS); or a network element such as the above access point, a controller behind the base station, or an authenticator.
  • FIG. 1 is a flowchart of an embodiment of a method for notifying a channel usage time of uplink data transmission according to the present invention. As shown in FIG. 1, the method includes:
  • the access point device sends a first indication message to the terminal, where the first indication message is used to indicate that the terminal is allowed to access the current channel, or the first indication message is used to indicate that the terminal has downlink data at the access point device; or The indication message is used to indicate that the terminal is allowed to send uplink data.
  • the access point device receives a second indication message sent by the terminal according to the first indication message, where the second indication message is used to indicate that the terminal is to send uplink data.
  • the access point device After receiving the second indication message, the access point device sends a third indication message to the terminal, where the third indication message carries channel usage time information, and the channel usage time information is used to indicate the channel usage time of the terminal to send uplink data.
  • the access point device may send the first indication message to the one or more terminals.
  • the access point device may send the first indication message to the terminal by using a unicast or broadcast manner.
  • the first indication message may be used to indicate that the terminal is allowed to access the current channel, where the current channel refers to the current working channel of the access point device.
  • the allowing the terminal to access the current channel specifically means that the terminal can use the access during the subsequent period of time when the access point device sends the first indication message, such as in the current beacon period.
  • the current working channel of the point device communicates with the access point device, for example, the terminal can receive the downlink management frame, control frame or data frame sent by the access point device, And the terminal may send an uplink management frame, a control frame or a data frame to the access point device;
  • the first indication message may be further used to indicate that the terminal has downlink data at the access point, that is, the access point device has downlink data that needs to be sent to the terminal.
  • the terminal when the terminal receives the first indication message and finds that it has downlink data in the access point device, the terminal may simultaneously send an indication message to the access point device that is ready to receive downlink data. Indicates the uplink data to be transmitted and the data amount information of the uplink data or the transmission time information required for transmitting the uplink data.
  • the indication message sent by the terminal to the access point device indicating that the downlink data is ready to be received is the second indication.
  • the first indication message may be further used to indicate that the terminal is allowed to send uplink data to the access point device.
  • Some or some terminals may not receive the first indication message sent by the access point device due to factors such as the surrounding co-channel interference signal, or some terminal terminal does not need to send uplink data, therefore, these The terminal does not send a second indication message to the access point device.
  • the other terminal that receives the first indication message may send the second indication message to the access point device according to the first indication message. It can be seen that the number of terminals that send the second indication message may be smaller than the number of terminals that receive the first indication message, or may be equal to the number of terminals that receive the first indication message.
  • the access point device receives the second indication message sent by the terminal according to the first indication message, the number of the terminal that can send the uplink data according to the requirement, and the channel resource that can carry the uplink data by itself are Each terminal determines a channel usage time for transmitting uplink data.
  • the second indication message sent by the terminal to the access point device may carry the data amount of the uplink data of the terminal or the sending time information of the uplink data.
  • the access point device may receive the channel usage time according to the uplink data.
  • the access point device receives the After the second indication message carrying the transmission time information of the uplink data, the channel usage time information for transmitting the uplink data may be determined for the terminal according to the transmission time information of the uplink data.
  • the third indication message sent by the access point device to the terminal may be sent in a broadcast manner or in a unicast manner:
  • the third indication message sent by the access point device to the terminal may be a broadcast message, where the broadcast message carries channel usage time information used by each terminal to send uplink data.
  • the broadcast message may directly carry the identifier of each terminal and channel usage time information used by the terminal to send uplink data.
  • the broadcast message may also indicate, in an implicit manner, each terminal is configured to send uplink.
  • the channel usage time information of the data For example, a broadcast message may carry information consisting of multiple binary bits, and each binary bit may be used to represent a terminal, for example: the first binary bit may be used to represent terminal 1, and the second binary bit may be used. The terminal 2... indicates that the nth binary bit can be used to represent the terminal n.
  • the binary location "1" in the default broadcast message between the access point device and the terminal indicates that the channel usage time is allocated for the corresponding terminal, and "0" indicates that the channel usage time is not allocated for the corresponding terminal, and the above is more
  • the channel usage time for transmitting the uplink data is sequentially indicated for the corresponding terminal in the order of the terminals corresponding to the binary bits set to "1".
  • the access point device and the terminal can also agree on a time unit of a certain time.
  • the terminal device can determine that the information carried in the time unit starting from the time immediately after the broadcast frame, the time delay of 5 times the agreed time unit is the terminal for transmitting the uplink data. Channel usage time information.
  • the access point device may further send a second acknowledgement message to the second indication message to the terminal, where the second acknowledgement message may be used to indicate the access point.
  • the device successfully receives the second indication message.
  • the access point device may send a first acknowledgement message to the second indication message to the terminal, where the first acknowledgement message is sent. It can be used to indicate that the access point device receives the second indication message.
  • the first acknowledgement message may be used as a third indication message, and the first acknowledgement information may carry channel usage time information for the terminal to send uplink data.
  • the contention mode is usually used, and the method may cause the terminal or the terminal to fail to successfully send the second indication message to the access point device, according to which Optionally, the first indication message sent by the access point device to the terminal may further carry: The transmission time information of the second indication message is used to indicate the time when the terminal sends the second indication message.
  • the first indication message sent by the access point device to the terminal may further carry: the access point device sends the time information of the third indication message to the terminal, so that the terminal sends the terminal to the access point.
  • the device sends the second indication message it may enter a doze state, and may enter an awake state from the sleep state before receiving the third indication message sent by the access point device.
  • FIG. 2 is a flowchart of still another embodiment of an uplink data sending method according to the present invention. As shown in FIG. 2, the method includes:
  • the terminal receives a first indication message sent by the access point device, where the first indication message is used to indicate that the terminal is allowed to access the current channel, or the first indication message is used to indicate that the terminal has downlink data at the access point device; or the first indication The message is used to indicate that the terminal is allowed to send uplink data.
  • the terminal sends a second indication message to the access point device according to the first indication message, where the second indication message is used to indicate that the terminal is to send uplink data.
  • the terminal when the terminal receives the first indication message, and finds that it has downlink data in the access point device, it may simultaneously indicate in the indication message that is sent to the access point device and is ready to receive downlink data.
  • the indication message sent by the terminal to the access point device indicating that the downlink data is ready to be received is the second indication message. ;
  • the terminal receives a third indication message that is sent by the access point device after receiving the second indication message, where the third indication message carries channel usage time information.
  • the channel usage time information is used to indicate that the terminal uses the channel for sending uplink data. time.
  • the terminal sends uplink data to the access point device according to the channel usage time information.
  • the uplink data may be sent by the terminal to the access point device to indicate that the uplink data is to be sent.
  • the terminal may first determine the data amount of the uplink data that needs to be sent, so that the access point device can according to the data.
  • the amount and the transmission rate of the terminal determine the channel usage time that the terminal uses to transmit the uplink data.
  • the terminal may also determine, according to the data volume of the uplink data to be sent and the transmission rate of the terminal, the transmission time required for transmitting the uplink data.
  • the terminal may carry the sending time information of the uplink data in the second indication message sent to the access point device, so that the access point device determines, according to the sending time information of the uplink data carried in the second indication message, that the terminal is used for sending Channel usage time of uplink data.
  • the third indication message received by the terminal may be a broadcast message sent by the access point device, where the broadcast message carries channel usage time information for the terminal to send the uplink data; or the third indication message may also be an access point device pair. a first acknowledgement message of the second indication message sent by the terminal, where the first acknowledgement message may carry channel usage time information used by the terminal to send uplink data.
  • the second acknowledgment message sent by the access point device to the second indication message may be received, where the second acknowledgment message may be used to indicate the access.
  • the point device receives the second indication message.
  • the terminal may fail to transmit the first indication message sent by the access point device.
  • the sending time information of the indication message, and the sending time information of the second indication message is used to indicate the time when the terminal sends the second indication message.
  • the terminal may send the second indication message to the access point device according to the sending time information of the second indication message.
  • the first indication message sent by the access point device that is received by the terminal may further carry: the time information that the access point device sends the third indication message to the terminal; correspondingly, the terminal After sending the second indication message to the access point device, the sleep state can be entered.
  • the terminal may enter the awake state from the sleep state before receiving the third indication message sent by the access point device.
  • FIG. 3 is a flowchart of another embodiment of an uplink data sending method according to the present invention.
  • an access point device is provided in an implementation scenario where an access point device is an AP and a terminal is an STA. Each terminal allocates a specific embodiment of a channel usage time for transmitting uplink data.
  • the method includes:
  • the AP sends a beacon frame (Beacon) to the STA, where the beacon frame includes indication information that the STA is allowed to access the current channel indication information; or the beacon frame includes indication information that is used to indicate that the STA has downlink data at the AP; or The beacon frame includes indication information indicating that the STA is allowed to transmit uplink data.
  • the STA is the terminal, and the beacon frame Beacon is the first indication message.
  • AP can pass
  • the Page Indication MAP (PIM element) in the Beacon indicates/paging the STA that is allowed to send uplink data.
  • the PIM element can be represented by a plurality of binary bits, each of which can correspond to a station STA.
  • the location number of each binary bit in the entire PIM element can be the Association Identifier (AID) of the corresponding STA.
  • the STA corresponding to the corresponding location may be allowed to send uplink data by setting the corresponding binary bit in the PIM element to "1", or the STA corresponding to the location may be allowed to access the current channel, or the STA indicating the corresponding location may have the STA on the AP.
  • Downstream data may be used to send uplink data by setting the corresponding binary bit in the PIM element to "1", or the STA corresponding to the location may be allowed to access the current channel, or the STA indicating the corresponding location may have the STA on the AP.
  • a collision may be generated.
  • the AP may allocate a UL-Poll time for each STA, and carry, in the first indication message, the sending time information of each of the STAs to send the U L-Poll, where the sending time information is the current beacon period of each STA (Beacon Interval) The time during which the UL-Poll is sent, so that each STA does not need to use the contention method to send the UL-Poll, but can send the UL-PolL to the AP at the time allocated by the AP.
  • Beacon Interval Beacon Interval
  • the beacon frame is included to indicate the STA.
  • the STA may send the indication to the AP at the subsequent agreed time.
  • the indication message for receiving the downlink data includes the uplink data indicating the STA itself to be sent, the data volume information of the uplink data to be sent, or the transmission time information required for transmitting the uplink data.
  • the sent indication indicating that the downlink data is ready to receive is the second indication message U L-Pol I.
  • the AP can directly carry the transmission time information of the UL-Poll for each STA in the Beacon.
  • the Beacon can directly carry the AID of each STA and the corresponding UL-Poll transmission time information. That is, the UI may indicate, in the Beacon, the transmission time information of the U L-Poll in each of the Beacons.
  • the AP may also indicate, in the Beacon, the UL-Poll transmission time information in the Beacon by using implicit information.
  • the PIM element may be represented by multiple binary bits, and each The binary bit can correspond to one STA.
  • the location number of each binary bit in the PIM element corresponds to the associated identity AID of the corresponding STA. All of the binary bits may correspond to all STAs that the AP allows to send uplink data. For example, a binary location "1" in the PIM element may indicate that the corresponding STA is allowed to send uplink data, and if the STA has data to be transmitted, a second indication needs to be sent.
  • the binary position "0" in the PIM element indicates that the corresponding STA is not allowed to send uplink data, and the corresponding STA does not need to send the second indication message.
  • the AP and the STA may agree to use a certain time as a time unit, and each STA that is allowed to send uplink data may set a corresponding binary bit of "1" to the entire PIM element.
  • the sequence number in the binary bit set to "1" is used as a time multiplication, and the transmission time of the transmission U L-Poll is determined by multiplying the same time unit by the corresponding time multiple.
  • the number of STAs and the time taken by each STA to send UL-Poll are determined.
  • the Beacon can also carry: the AP sends the sending time information of the third indication message to each STA, so that each STA can enter the sleep state after sending the UL-Poll to the AP, and the third is sent by the AP.
  • the waking state can be entered from the sleep state before the indication message.
  • the time for the AP to send the third indication message to each STA may be immediately after the end of the transmission time for the AP to allocate UL-Poll for all paging STAs.
  • the STA sends a UL-Poll message to the AP.
  • the UL-Poll message is the second indication message.
  • any STA can check whether the corresponding binary bit in the PIM element is set to "1". If "1" is set, it indicates that the AP allows to send uplink data, or allows access to the current channel, or the AP has the STA. Downstream data.
  • the STA may also use the default time unit multiplied by the corresponding time multiple to determine the time for transmitting the UL-Poll.
  • the STA may determine the data volume of the uplink data or the sending time of the uplink data.
  • the UL-Poll message sent by the terminal to the AP may carry the data volume of the uplink data or the transmission time information of the uplink data, so that the AP can send the time information according to the data volume of the uplink data or the uplink data carried in the UL-Poll message.
  • the channel usage time for each STA to transmit uplink data is determined.
  • UL-Poll can use the format shown in Table 1 below:
  • "Frame Control” contains frame type information such that the UL-Poll frame is distinguished from other frames, and the value of "Duration” is used to indicate the transmission time information of the uplink data required by the STA.
  • the corresponding position of "Duration” can also be set to "length” to indicate the length information of the uplink data that the STA needs to send.
  • RA denotes a source STA
  • TA denotes a destination AP
  • FCS denotes check information for a UL-Poll message.
  • the STA can enter a doze state to save power. Further, if the Beacon carries the sending time information of the third indication message to the STA, the STA may enter an awake state before receiving the third indication message sent by the AP.
  • the AP sends a second acknowledgement message to the STA to the second indication message.
  • the AP may immediately send a second acknowledgement message to the STA, where the second acknowledgement message may be a short acknowledgement message (Acknowledge, ACK), to indicate that the STA is sent by the STA.
  • the second acknowledgement message may be a short acknowledgement message (Acknowledge, ACK)
  • Acknowledge, ACK short acknowledgement message
  • the AP sends a PSPM broadcast frame to the STA, where the broadcast frame carries channel usage time information used by the STA to send uplink data.
  • the AP may broadcast a Power Save Multi Poll (PSMP) as a third indication message to all STAs at a specified time. And carrying the channel usage time for each STA to transmit uplink data in the PSMP frame.
  • PSMP Power Save Multi Poll
  • the AP after receiving the UL-Poll message sent by each STA, the AP does not need to separately respond to the ACK acknowledgement message, but may broadcast and transmit a PSM after allocating the channel usage time for sending the uplink data to each STA. P message.
  • PSMP frames can be formatted as shown in Table 2 below:
  • the Category indicates the type of the frame
  • the HT Action indicates that the frame belongs to the control frame for high-speed transmission
  • the PSMP parameter Set indicates the parameter set of the PSMP
  • the PSMP STA Info indicates the channel usage time information element specified for the STA included in the frame.
  • Different information channel time formats can be included in the information element, and the time format is distinguished by the STA-INFO TYPE therein.
  • the repeated N_STA times (N_STA is a subfield of the PSMP parameter Set field) indicates that when it is required to specify channel usage time for a plurality of STAs at the same time, a plurality of PSMP STA Info information elements may be included in the PSMP frame.
  • STA-INFO indicates the STA-INFO element in the PSMP
  • STAJD indicates the identity of the STA
  • PIM-UTT Start offset indicates the transmission assigned to the STA.
  • the start time of the uplink data, the PIM-UTT Duration is expressed as the
  • FIG. 4 is a schematic diagram of an AP allocating uplink data transmission time to STA1, STA2, and STA3 to complete uplink data transmission.
  • the AP periodically broadcasts a Beacon frame carrying the PIM element, that is, the first indication message.
  • STA1, STA2, and STA3 respectively send a UL-Poll, that is, a second indication message, to the AP.
  • the AP After receiving the UL-Poll sent by STA1, STA2, and STA3, the AP sends a PSMP broadcast frame carrying the channel usage time for the uplink data sent by STA1, STA2, and STA3.
  • STA1, STA2, and STA3 may The uplink data is sent to the AP at the corresponding channel usage time.
  • the AP may send an acknowledgement message for the UL-Poll message to STA1, STA2, and STA3, respectively.
  • Acknowledgment message) ACK the second acknowledgment message is used to indicate that the AP receives the UL-Poll
  • the AP may send the bearer to the STAs for carrying STA1, STA2, and STA3 transmit the PSMP broadcast frame of the channel usage time of the uplink data.
  • STA1, STA2, and STA3 may send the uplink data to the AP in the corresponding channel usage time.
  • the AP may use other types of broadcast frames.
  • the newly defined media access control frame may be used (Media Access).
  • MAC frame M ⁇ is the third indication message.
  • the UL-Poll bit can be newly defined. Two fields: a UL-Poll Bitmap field and an UL Traffic Time field.
  • the UL-Poll Bitmasp field may contain multiple binary bits, and each binary bit may correspond to one STA, corresponding to The rules can refer to the definition of PIM in Beacon.
  • a binary bit set to "1" can indicate that the AP correctly received the UL-Poll message from the STA whose position number in the UL-Poll Bitmap field of the binary is used as the AID.
  • the time field may also include multiple binary bytes, each byte including 8 binary bits, and each two bytes represent one for the STA to send uplink data. Time, the transmission of the uplink data ends before the next start time.
  • one or more bytes may be further used to indicate a corresponding one of the start times after two bytes indicating the start time of each STA transmitting the uplink data. The duration of the uplink data sent.
  • the AP may send a first acknowledgement message to the STA for the UL-Poll message, and carry the first acknowledgement message in the first acknowledgement message.
  • FIG. 7 is a schematic diagram of the uplink data transmission being performed by the AP transmitting the second acknowledgement message to STA1, STA2, and STA3, respectively.
  • the AP periodically broadcasts the Beacon carrying the PIM, that is, the first indication message.
  • STA1, STA2, and STA3 respectively send a UL-Poll message, that is, a second indication message, to the AP.
  • the AP After receiving the UL-Poll sent by STA1, STA2, or STA3, the AP sends a first acknowledgement message ACK1 (x0), ACK2 (x2) to the UL-Poll message to each of the UL-Poll messages, respectively.
  • ACK1 ( ⁇ ) may carry a channel use start time for STA1 to send uplink data, such as x0
  • ACK2 (x2) may carry a channel use start time for STA2 to send uplink data, such as x2
  • ACK3 (x4) can carry the channel use start time for STA3 to send uplink data, such as x4.
  • STA1, STA2, and STA3 may send uplink data to the AP at respective channel usage times.
  • the STA sends uplink data to the AP in a channel usage time carried in the third indication message.
  • the AP instructs the STA to send the uplink data by using the Beacon frame, but the STA may not correctly receive the Beacon frame from the AP due to interference of the same-frequency wireless signal, so the UL cannot be sent to the AP.
  • Poll or the STA may send the UL-Poll to the AP, but the AP does not receive the packet correctly, or the STA does not need to send the uplink data to the AP.
  • the AP does not allocate the channel usage time for sending the uplink data to the STA.
  • FIG. 8 is a schematic structural diagram of an embodiment of an access point device according to the present invention. As shown in FIG. 8, the access point device includes: a transmitter 1 1 and a receiver 12;
  • the transmitter 1 1 is configured to send a first indication message to the terminal, where the first indication message is used to indicate that the terminal is allowed to access the current channel, or the first indication message is used to indicate that the terminal has downlink data in the access point device; or An indication message is used to indicate that the terminal is allowed to send the uplink data, and the receiver 12 is configured to receive the second indication message that is sent by the terminal according to the first indication message, where the second indication message is used to indicate that the second terminal is to send the uplink data.
  • the transmitter 11 is further configured to: after receiving the second indication message, the receiver 12 sends the third terminal to the terminal
  • the indication message carries the channel usage time information in the third indication message; the channel usage time information is used to indicate the channel usage time of the terminal to send the uplink data.
  • FIG. 9 is a schematic structural diagram of still another embodiment of an access point device according to the present invention.
  • the access point device includes: a transmitter 1 1 , a receiver 12 , and a processor 13 ;
  • the second indication message received by the receiver 12 carries the data volume of the uplink data of the terminal or the transmission time information of the uplink data.
  • the processor 13 can be configured to determine channel usage time information according to the data volume of the uplink data carried in the second indication message or the transmission time information of the uplink data.
  • the transmitter 11 may be specifically configured to: send a broadcast message to the terminal, where the broadcast message carries the channel usage time information; or send a first acknowledgement message to the second indication message to the terminal, where the first acknowledgement message is carried Channel usage time information.
  • the transmitter 11 is further configured to: after receiving the second indication message sent by the terminal, the receiver 12 sends a second acknowledgement message to the second indication message, where the second acknowledgement message is used to indicate the access point.
  • the device receives the second indication message.
  • the first indication message sent by the sender 11 further carries: sending time information of the second indication message, where the sending time information of the second indication message is used to indicate the sending time of the second indication message by the terminal.
  • the first indication message sent by the sender 11 further carries: the sender 11 sends the time information of the third indication message to the terminal, so that the terminal enters a dormant state after sending the second indication message to the access point device, The awake state is entered from the sleep state before receiving the third indication message sent by the transmitter 11.
  • the access point device provided by the embodiment of the present invention corresponds to the uplink data sending method provided by the embodiment of the present invention, and is an execution device of the uplink data sending method, and the specific process for performing the uplink data sending method can be referred to FIG.
  • the method embodiments shown in FIG. 3-7 are not described herein again.
  • the access point device provided in this embodiment sends an indication message for indicating that the uplink data is to be sent, and then receives an indication message for indicating that the uplink data is to be sent, according to the indication message for sending the uplink data, to the terminal, Then, channel usage time information for transmitting uplink data is sent to the terminal, and the utilization rate of the uplink data transmission time allocated by the access point device is improved.
  • 10 is a schematic structural diagram of an embodiment of a terminal provided by the present invention. As shown in FIG.
  • the terminal includes: a receiver 21 and a transmitter 22;
  • the receiver 21 is configured to receive a first indication message sent by the access point device, where the first indication message is used to indicate that the terminal is allowed to access the current channel, or the first indication message is used to indicate that the terminal has downlink data at the access point device; or The first indication message is used to indicate that the terminal is allowed to send uplink data.
  • the transmitter 22 is configured to send, by using the first indication message, a second indication message to the access point device, where the second indication message is used to indicate that the terminal is to send uplink data.
  • the receiver 21 is further configured to receive a third indication message that is sent by the access point device after receiving the second indication message, where the third indication message carries channel usage time information; the channel usage time information is used to indicate the channel that the terminal sends the uplink data. usage time;
  • the transmitter 22 is further configured to send uplink data to the access point device during the channel usage time according to the channel usage time information.
  • FIG. 1 is a schematic structural diagram of still another embodiment of a terminal according to the present invention. As shown in FIG. 11, the terminal includes: a receiver 21, a transmitter 22, and a processor 23;
  • the processor 23 is configured to determine the data volume of the uplink data or the sending time information of the uplink data.
  • the second indication message sent by the transmitter 22 to the access point device carries the data volume of the uplink data or the sending time of the uplink data.
  • the information is such that the access point device determines the channel usage time information according to the data amount of the uplink data or the transmission time information of the uplink data.
  • the third indication message is specifically a broadcast message sent by the access point device, where the broadcast message carries the channel usage time information; the receiver 21 may be specifically configured to: receive the broadcast message sent by the access point device; or, the third The indication message is specifically a first acknowledgment message sent by the access point device to the second indication message, where the first acknowledgment message carries the channel usage time information; the receiver 21 is specifically configured to: receive the first acknowledgment message sent by the access point device .
  • the receiver 21 is further configured to: receive a second acknowledgement message sent by the access point device to the second indication message, where the second acknowledgement message is used to indicate that the access point device receives the second indication message.
  • the first indication message received by the receiver 21 further includes: a sending time information of the second indication message, where the sending time information of the second indication message is used to indicate a time when the terminal sends the second indication message;
  • the transmitter 22 may be configured to send the second indication message to the access point device according to the sending time information of the second indication message carried in the first indication message.
  • the first indication message further includes: the access point device sends the time information of the third indication message to the terminal; the processor 23 is further configured to: send, by the transmitter 22, the second indication to the access point device. After the information, the control terminal enters a sleep state; the processor 23 is further configured to: before the receiver 21 receives the third indication message, control the terminal to enter the awake state from the sleep state.
  • the terminal provided by the embodiment of the present invention corresponds to the uplink data sending method provided by the embodiment of the present invention, and is an executing device of the uplink data sending method, and the specific process for performing the uplink data sending method can be referred to the FIG. 2 to FIG. 7 of the present invention.
  • the method embodiment shown is not described here.
  • the terminal provided by the embodiment, after receiving the indication message sent by the access point device for instructing the terminal to send the uplink data, if the uplink data needs to be sent, sending the indication message to the access point device according to the indication message for sending the uplink data, An indication message indicating that the uplink data is to be sent, so that the access point device receives the indication message for indicating the uplink data to be sent, and sends the channel usage time information for sending the uplink data to the terminal, and improves the access point device.
  • the utilization of the allocated uplink data transmission time is a configurable period of time.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of modules or units 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 mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the displayed components may or may not be physical units, i.e., may be located in one place, or may be distributed over multiple network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • 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. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

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Abstract

本发明实施例提供一种通知上行数据发送的信道使用时间的方法、上行数据发送方法和设备。一种方法包括:接入点设备向终端发送第一指示消息,第一指示消息用于指示允许终端访问当前信道;或第一指示消息用于指示终端在接入点设备有下行数据;或第一指示消息用于指示允许终端发送上行数据;接入点设备接收终端根据第一指示消息发送的第二指示消息;第二指示消息用于指示终端待发送上行数据;接入点设备在接收到第二指示消息后,向终端发送第三指示消息,第三指示消息中携带信道使用时间信息;信道使用时间信息用于指示终端发送上行数据的信道使用时间。提高网络侧分配的上行数据发送时间的利用率。

Description

通知上行数据发送的信道使用时间的方法、 上行数据发送方法和设备 本申请要求于 2012 年 6 月 20 日提交中国专利局、 申请号为 201210205425.7、 名称为 "通知上行数据发送的信道使用时间的方法、 上行数 据发送方法和设备"的中国专利申请的优先权, 其全部内容通过引用结合在本 申请中。
技术领域 本发明涉及通信技术,尤其涉及一种通知上行数据发送的信道使用时间的 方法、 上行数据发送方法和设备。 背景技术 现有技术中, 接入点 (Access Point, AP ) 向站点 (Station , STA )发 送指示信息, 以指示每个 STA发送上行数据的起止时间, STA按照 AP指示的 时间, 在指定的时间进入激活状态并向 AP发送上行数据。
然而, STA可能由于周边的同频干扰信号的影响而没有接收到 AP发送的 指示信息, 无法在 AP指定的上行数据发送时间发送上行数据, 从而造成了 AP 分配的上行数据发送时间浪费。 发明内容 本发明实施例提供一种通知上行数据发送的信道使用时间的方法、上行数 据发送方法和设备, 提高网络侧分配的上行数据发送时间的利用率。
一方面, 本发明实施例提供一种通知上行数据发送的信道使用时间的方 法, 包括:
接入点设备向终端发送第一指示消息,所述第一指示消息用于指示允许所 述终端访问当前信道;或所述第一指示消息用于指示所述终端在所述接入点设 备有下行数据; 或所述第一指示消息用于指示允许所述终端发送上行数据; 所述接入点设备接收所述终端根据所述第一指示消息发送的第二指示消 息; 所述第二指示消息用于指示所述终端待发送上行数据;
所述接入点设备在接收到所述第二指示消息后,向所述终端发送第三指示 消息, 所述第三指示消息中携带信道使用时间信息; 所述信道使用时间信息用 于指示所述终端发送上行数据的信道使用时间。
如上所述的方法,所述第二指示消息中携带所述终端的上行数据的数据量 或上行数据的发送时间信息。
如上所述的方法, 所述接入点设备在接收到所述第二指示消息后, 向所述 终端发送第三指示消息之前,还包括: 所述接入点设备根据所述第二指示消息 中携带的所述上行数据的数据量或上行数据的发送时间信息,确定所述信道使 用时间信息。
如上所述的方法, 所述接入点设备向所述终端发送第三指示消息, 包括: 所述接入点设备向所述终端发送广播消息 ,所述广播消息中携带所述信道使用 时间信息; 或者, 所述接入点设备向所述终端发送对所述第二指示消息的第一 确认消息, 所述第一确认消息中携带所述信道使用时间信息。
如上所述的方法,所述接入点设备接收所述终端根据所述第一指示消息发 送的所述第二指示消息之后,还包括: 所述接入点设备向所述终端发送对所述 第二指示消息的第二确认消息,所述第二确认消息用于指示所述接入点设备接 收到所述第二指示消息。
如上所述的方法, 所述第一指示消息中还携带: 第二指示消息的发送时间 信息,所述第二指示消息的发送时间信息用于指示所述终端发送所述第二指示 消息的时间。
如上所述的方法, 所述第一指示消息中还携带: 所述接入点设备向所述终 端发送所述第三指示消息的时间信息,以使所述终端向所述接入点设备发送所 述第二指示消息之后进入休眠状态,在接收所述接入点设备发送的所述第三指 示消息之前从休眠状态进入唤醒状态。
本发明实施例还提供一种上行数据发送方法, 包括:
终端接收接入点设备发送的第一指示消息 ,所述第一指示消息用于指示允 许所述终端访问当前信道;或所述第一指示消息用于指示所述终端在所述接入 点设备有下行数据; 或所述第一指示消息用于指示允许所述终端发送上行数 据; 所述终端根据所述第一指示消息向所述接入点设备发送第二指示消息,所 述第二指示消息用于指示所述终端待发送上行数据;
所述终端接收所述接入点设备接收到所述第二指示消息后发送的第三指 示消息, 所述第三指示消息中携带信道使用时间信息; 所述信道使用时间信息 用于指示所述终端发送上行数据的信道使用时间;
所述终端根据所述信道使用时间信息,在所述信道使用时间向所述接入点 设备发送上行数据。
如上所述的方法,所述终端根据所述第一指示消息向所述接入点设备发送 第二指示消息之前,还包括: 所述终端确定上行数据的数据量或上行数据的发 送时间信息;所述终端向所述接入点设备发送的所述第二指示消息中携带所述 上行数据的数据量或上行数据的发送时间信息,以使所述接入点设备根据所述 上行数据的数据量或上行数据的发送时间信息, 确定所述信道使用时间信息。
如上所述的方法,所述第三指示消息具体为所述接入点设备发送的广播消 息, 所述广播消息中携带所述信道使用时间信息; 所述终端接收所述接入点设 备发送的第三指示消息为: 所述终端接收所述接入点设备发送的所述广播消 息; 或者, 所述第三指示消息具体为所述接入点设备发送的对所述第二指示消 息的第一确认消息, 所述第一确认消息中携带所述信道使用时间信息; 所述终 端接收所述接入点设备发送的第三指示消息为:所述终端接收所述接入点设备 发送的所述第一确认消息。
如上所述的方法,所述终端根据所述第一指示消息向所述接入点设备发送 第二指示消息之后,还包括: 所述终端接收所述接入点设备发送的对所述第二 指示消息的第二确认消息,所述第二确认消息用于指示所述接入点设备接收到 所述第二指示消息。
如上所述的方法, 所述第一指示消息中还携带: 第二指示消息的发送时间 信息,所述第二指示消息的发送时间信息用于指示所述终端发送所述第二指示 消息的时间;所述终端根据所述第一指示消息向所述接入点设备发送第二指示 消息, 具体为: 所述终端根据所述第一指示消息中携带的所述第二指示消息的 发送时间信息, 向所述接入点设备发送所述第二指示消息。
如上所述的方法, 所述第一指示消息中还携带: 所述接入点设备向所述终 端发送所述第三指示消息的时间信息;所述终端根据所述第一指示消息向所述 接入点设备发送第二指示消息之后, 还包括: 所述终端进入休眠状态; 所述终 端接收所述接入点设备接收到所述第二指示消息后发送的第三指示消息之前, 还包括: 所述终端从休眠状态进入唤醒状态。
另一方面, 本发明实施例提供一种接入点设备, 包括:
发送器, 用于向终端发送第一指示消息, 所述第一指示消息用于指示允许 所述终端访问当前信道;或所述第一指示消息用于指示所述终端在所述接入点 设备有下行数据; 或所述第一指示消息用于指示允许所述终端发送上行数据; 接收器, 用于接收所述终端根据所述第一指示消息发送的第二指示消息, 所述第二指示消息用于指示所述第二终端待发送上行数据;
所述发送器还用于: 在所述接收器接收到所述第二指示消息后, 向所述终 端发送第三指示消息, 所述第三指示消息中携带信道使用时间信息; 所述信道 使用时间信息用于指示所述终端发送上行数据的信道使用时间。
如上所述的接入点设备,所述接收器接收的所述第二指示消息中携带所述 终端的上行数据的数据量或上行数据的发送时间信息。
如上所述的接入点设备, 还包括: 处理器, 用于根据所述第二指示消息中 携带的所述上行数据的数据量或上行数据的发送时间信息 ,确定所述信道使用 时间信息。
如上所述的接入点设备,所述发送器具体用于:向所述终端发送广播消息, 所述广播消息中携带所述信道使用时间信息; 或者, 向所述终端发送对所述第 二指示消息的第一确认消息, 所述第一确认消息中携带所述信道使用时间信 息。
如上所述的接入点设备, 所述发送器还用于: 在所述接收器接收所述终端 发送的第二指示消息之后,向所述终端发送对所述第二指示消息的第二确认消 息, 所述第二确认消息用于指示所述接入点设备接收到所述第二指示消息。
如上所述的接入点设备, 所述发送器发送的所述第一指示消息还携带: 第 二指示消息的发送时间信息,所述第二指示消息的发送时间信息用于指示所述 终端发送所述第二指示消息的发送时间。
如上所述的接入点设备, 所述发送器发送的所述第一指示消息还携带: 所 述发送器向所述终端发送所述第三指示消息的时间信息 ,以使所述终端向所述 接入点设备发送所述第二指示消息之后进入休眠状态,在接收所述发送器发送 的所述第三指示消息之前从休眠状态进入唤醒状态。
本发明实施例提供一种终端, 包括:
接收器, 用于接收接入点设备发送的第一指示消息, 所述第一指示消息用 于指示允许所述终端访问当前信道;或所述第一指示消息用于指示所述终端在 所述接入点设备有下行数据;或所述第一指示消息用于指示允许所述终端发送 上行数据;
发送器, 用于根据所述第一指示消息向所述接入点设备发送第二指示消 息, 所述第二指示消息用于指示所述终端待发送上行数据;
所述接收器 ,还用于接收所述接入点设备接收到所述第二指示消息后发送 的第三指示消息, 所述第三指示消息中携带信道使用时间信息; 所述信道使用 时间信息用于指示所述终端发送上行数据的信道使用时间;
所述发送器,还用于根据所述信道使用时间信息, 在所述信道使用时间向 所述接入点设备发送上行数据。
如上所述的终端, 还包括: 处理器, 用于确定上行数据的数据量或上行数 据的发送时间信息;所述发送器向所述接入点设备发送的所述第二指示消息中 携带所述上行数据的数据量或上行数据的发送时间信息 ,以使所述接入点设备 根据所述上行数据的数据量或上行数据的发送时间信息,确定所述信道使用时 间信息。
如上所述的终端,所述第三指示消息具体为所述接入点设备发送的广播消 息, 所述广播消息中携带所述信道使用时间信息; 所述接收器具体用于: 接收 所述接入点设备发送的所述广播消息; 或者, 所述第三指示消息具体为所述接 入点设备发送的对所述第二指示消息的第一确认消息,所述第一确认消息中携 带所述信道使用时间信息; 所述接收器具体用于: 接收所述接入点设备发送的 所述第一确认消息。
如上所述的终端, 所述接收端还用于: 接收所述接入点设备发送的对所述 第二指示消息的第二确认消息,所述第二确认消息用于指示所述接入点设备接 收到所述第二指示消息。
如上所述的终端, 所述接收器接收的所述第一指示消息中还携带: 第二指 示消息的发送时间信息,所述第二指示消息的发送时间信息用于指示所述终端 发送所述第二指示消息的时间; 所述发送器具体用于: 根据所述第一指示消息 中携带的所述第二指示消息的发送时间信息,向所述接入点设备发送所述第二 指示消息。
如上所述的终端, 所述第一指示消息中还携带: 所述接入点设备向所述终 端发送所述第三指示消息的时间信息; 所述处理器还用于: 在所述发送器向所 述接入点设备发送所述第二指示消息之后,控制所述终端进入休眠状态; 所述 处理器还用于: 在所述接收器接收所述第三指示消息之前,控制所述终端从休 眠状态进入唤醒状态。
本发明实施例提供的通知上行数据发送的信道使用时间的方法、上行数据 发送方法和设备。接入点设备向终端发送用于指示允许终端发送上行数据的指 示消息后,如果接收到终端根据该发送上行数据的指示消息发送的用于指示待 发送上行数据的指示消息 ,则向该终端发送用于发送上行数据的信道使用时间 信息, 提高接入点设备分配的上行数据发送时间的利用率。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施 例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地, 下面描述 中的附图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 造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明提供的通知上行数据发送的信道使用时间的方法一个实施例 的流程图;
图 2为本发明提供的上行数据发送方法另一个实施例的流程图; 图 3为本发明提供的上行数据发送方法另一个实施例的流程图; 图 4为本发明提供的 AP向 STA的 STA1、 STA2和 STA3釆用 PSMP广播帧 完成上行数据传输一个实施例的示意图;
图 5为本发明提供的 AP向 STA的 STA1、 STA2和 STA3釆用 PSMP广播帧 完成上行数据传输又一个实施例的示意图;
图 6为本发明提供的 MAC帧的结构示意图;
图 7为本发明提供的 AP向 STA的 STA1、 STA2和 STA3分别发送第二确认 消息完成上行数据传输的示意图; 图 8为本发明提供的接入点设备一个实施例的结构示意图;
图 9为本发明提供的接入点设备又一个实施例的结构示意图;
图 10为本发明提供的终端一个实施例的结构示意图;
图 1 1为本发明提供的终端又一个实施例的结构示意图。 具体实施方式 为使本发明实施例的目的、技术方案和优点更加清楚, 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一部分实施例, 而不是全部的实施例。基于本发明中 的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其 他实施例, 都属于本发明保护的范围。
本文中描述的技术可用于各种通信系统, 例如当前 2G , 3G 通信系统和 下一代通信系统, 例如全球移动通信系统(GSM , Global System for Mobile communications ),码分多址 ( CDMA, Code Division Multiple Access )系统, 时分多址 (TDMA , Time Division Multiple Access ) 系统, 宽带码分多址 ( WCDMA , Wideband Code Division Multiple Access ) 系统, 频分多址 ( FDMA, Frequency Division Multiple Access )系统,正交频分多址(OFDMA, Orthogonal Frequency Division Multiple Access ) 系统, 单载波 FDMA ( SC-FDMA ) 系统, 通用分组无线业务(GPRS , General Packet Radio Service ) 系统, 长期演进( LTE, Long Term Evolution ) 系统, 以及其他此 类通信系统。
本申请中涉及的终端, 可以是无线终端也可以是有线终端, 无线终端可以 是指向用户提供语音和 /或数据连通性的设备, 具有无线连接功能的手持式设 备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(例 如, RAN , Radio Access Network )与一个或多个核心网进行通信, 无线终 端可以是移动终端, 如移动电话(或称为"蜂窝"电话)和移动计算机设备, 例 如, 可以是便携式、 袖珍式、 手持式、 计算机内置的或者车载的移动装置, 它 们与无线接入网交换语音和 /或数据。 例如, 个人通信业务(PCS , Personal Communication Service ) 电话、 无绳电话、 会话发起协议(SIP )话机、 无 线本地环路 ( WLL, Wireless Local Loop )站、个人数字助理( PDA, Personal Digital Assistant )等设备。 无线终端也可以称为订户单元( Subscriber Unit )、 订户站( Subscriber Station ),移动站( Mobile Station )、移动台( Mobile STA )、 STA、远程站( Remote Station )、接入点(Access Point ),远程终端( Remote Terminal ), 接入终端 (Access Terminal )、 用户终端 ( User Terminal )、 用户 代理( User Agent )、用户设备( User Device ),或用户装备( User Equipment )。
本申请中涉及的接入点设备, 可以是 WLAN中的接入点 (Access Point, AP ), 还可以是 GSM 网络、 GPRS 网络或 CDMA 网络中的基站 (Base Transceiver Station , BTS ),还可以是 CDMA2000网络或 WCDMA网络中的 基站(NodeB ),还可以是 LTE网络中的演进型基站( Evolved NodeB, eNB ), 还可以是 WiMAX 网络中的接入服务网络的基站(Access Service Network Base Station , ASN BS )等网元; 或也可以是以上接入点、 基站后面的控制 器或认证器等网元。
图 1为本发明提供的通知上行数据发送的信道使用时间的方法一个实施例 的流程图, 如图 1所示, 该方法包括:
5101、 接入点设备向终端发送第一指示消息, 第一指示消息用于指示允 许终端访问当前信道;或第一指示消息用于指示终端在所述接入点设备有下行 数据; 或第一指示消息用于指示允许终端发送上行数据。
5102、 接入点设备接收终端根据第一指示消息发送的第二指示消息, 第 二指示消息用于指示终端待发送上行数据。
5103、 接入点设备在接收到第二指示消息后, 向终端发送第三指示消息, 第三指示消息中携带信道使用时间信息 ,信道使用时间信息用于指示终端发送 上行数据的信道使用时间。
其中, 接入点设备可以向一个或多个终端发送第一指示消息, 可选的, 接 入点设备可以通过单播或广播的方式向终端发送第一指示消息。
第一指示消息可以用于指示允许终端访问当前信道, 其中, 当前信道是指 接入点设备当前的工作信道。在本发明的一个实施例中, 所述的允许终端访问 当前信道具体是指,在接入点设备发送第一指示消息的后续一段时间内,如当 前的信标周期内,终端可以使用接入点设备的当前工作信道与接入点设备进行 通讯, 如终端可以接收接入点设备发送的下行的管理帧、 控制帧或数据帧, 以 及终端可以向接入点设备发送上行的管理帧、 控制帧或数据帧;
或者, 第一指示消息还可以用于指示终端在接入点有下行数据, 即, 接入 点设备有需要向终端发送的下行数据。在本发明的一个实施例中, 当终端接收 到第一指示消息, 并发现自身在接入点设备有下行数据时, 可以在向接入点设 备发送的指示准备接收下行数据的指示消息中同时指示有待发送的上行数据 以及上行数据的数据量信息或发送上行数据所需要的发送时间信息,这时终端 向接入点设备发送的指示准备接收下行数据的指示消息,就是所述的第二指示 消息;
或者, 第一指示消息还可以用于指示允许终端向接入点设备发送上行数 据。
某个或某些终端可能由于周边的同频干扰信号等因素的影响而没有接收 到接入点设备发送的第一指示消息, 或者, 某个或某些终端不需要发送上行数 据, 因此, 这些终端不会向接入点设备发送第二指示消息。 而除上述没有接收 到第一指示消息或不需要发送上行数据的终端之外,接收到第一指示消息的其 他终端可以根据第一指示消息向接入点设备发送第二指示消息。 可以看出,发 送第二指示消息的终端的数量可以小于接收到第一指示消息的终端的数量,也 可以等于接收到第一指示消息的终端的数量。
作为一种可行的实施方式,接入点设备接收到终端根据第一指示消息发送 的第二指示消息后, 可以根据需要发送上行数据的终端数量,及自身能够承载 上行数据的信道资源等因素为各个终端确定用于发送上行数据的信道使用时 间。
作为另一种可行的实施方式,终端向接入点设备发送的第二指示消息中可 以携带该终端的上行数据的数据量或上行数据的发送时间信息。在一种实施场 景下,接入点设备接收到携带上行数据的数据量的第二指示消息后, 可以根据 送上行数据的信道使用时间; 在另一种实施场景下,接入点设备接收到携带上 行数据的发送时间信息的第二指示消息后,可以根据该上行数据的发送时间信 息, 为该终端确定用于发送上行数据的信道使用时间信息。
接入点设备向终端发送的第三指示消息可以以广播的方式发送,也可以以 单播的方式发送: 作为一种可行的实施方式,接入点设备向终端发送的第三指示消息可以为 广播消息, 该广播消息中携带每个终端用于发送上行数据的信道使用时间信 息。
可选的,该广播消息中可以直接携带每个终端的标识以及该终端用于发送 上行数据的信道使用时间信息; 或者, 广播消息中还可以以隐式的方式指示每 个终端用于发送上行数据的信道使用时间信息。举例来说, 广播消息中可以携 带由多个二进制位组成的信息, 每个二进制位可以用于表示一个终端, 例如: 第一个二进制位可以用于表示终端 1 ,第二个二进制位可以用于表示终端 2... ... 第 n个二进制位可以用于表示终端 n。接入点设备和终端之间可以默认广播消息 中的二进制位置 "1 " 来表示为对应的终端分配信道使用时间, 置 "0"表示不 为对应的终端分配信道使用时间, 并在上述的多个二进制位组成的信息域之 后, 按照置为 "1 " 的二进制位对应的终端的次序, 依次为对应的终端指示用 于发送上行数据的信道使用时间。此外,接入点设备与终端之间也可以约定一 定时间的时间单位, 对于任一接收到广播消息的终端, 如果该终端对应第 5个 (假设从 0开始计终端数)设置为 "1 " 的二进制位, 则该终端设备可以确定 在从紧接该广播帧之后开始计时, 延迟 5乘以约定的时间单位的时间点开始的 时间单位内所携带的信息为该终端用于发送上行数据的信道使用时间信息。
可以理解的是,上述仅为广播消息中携带每个终端用于发送上行数据的信 道使用时间信息的几种可行的实施方式, 但并不以此作为对本发明的限制。
可选的,接入点设备接收到任一终端发送的第二指示消息之后,还可以向 该终端发送对第二指示消息的第二确认消息,该第二确认消息可以用于指示接 入点设备成功接收到第二指示消息。
作为另一种可行的实施方式,接入点设备还可以在接收到任一终端发送的 第二指示消息后, 向该终端发送对该第二指示消息的第一确认消息, 该第一确 认消息可以用于表示接入点设备接收到第二指示消息。该第一确认消息可以作 为第三指示消息,第一确认信息中可以携带用于该终端发送上行数据的信道使 用时间信息。
由于各个终端向接入点设备发送第二指示消息通常釆用竟争方式,而这种 方式有可能导致某个或某些终端无法向接入点设备成功发送第二指示消息,据 此, 可选的, 接入点设备向终端发送的第一指示消息还可以携带: 第二指示消 息的发送时间信息,该第二指示消息的发送时间信息用于指示终端发送第二指 示消息的时间。
可选的, 为了减少终端的耗电量,接入点设备向终端发送的第一指示消息 还可以携带: 接入点设备向终端发送第三指示消息的时间信息,从而使终端向 接入点设备发送第二指示消息之后可以进入休眠(doze )状态, 在接收接入 点设备发送的第三指示消息之前可以从休眠状态进入唤醒(awake )状态。
本实施例提供的通知上行数据发送的信道使用时间的方法,接入点设备向 终端发送用于指示允许终端发送上行数据的指示消息后,如果接收到终端根据 该发送上行数据的指示消息发送的用于指示待发送上行数据的指示消息,则向 该终端发送用于发送上行数据的信道使用时间信息,提高接入点设备分配上行 数据发送时间时的信道利用率。 图 2为本发明提供的上行数据发送方法又一个实施例的流程图, 如图 2所 示, 该方法包括:
S201、 终端接收接入点设备发送的第一指示消息, 第一指示消息用于指 示允许终端访问当前信道;或第一指示消息用于指示终端在接入点设备有下行 数据; 或第一指示消息用于指示允许终端发送上行数据。
S202、 终端根据所述第一指示消息向接入点设备发送第二指示消息, 第 二指示消息用于指示终端待发送上行数据。
需要说明的是, 当终端接收到所述的第一指示消息, 并发现自身在接入点 设备有下行数据时,可以在向接入点设备发送的指示准备接收下行数据的指示 消息中同时指示有待发送的上行数据以及上行数据的数据量信息或发送上行 数据所需要的发送时间信息,这时终端向接入点设备发送的指示准备接收下行 数据的指示消息, 就是所述的第二指示消息;
S203、 终端接收接入点设备在接收到所述第二指示消息后发送的第三指 示消息, 第三指示消息中携带信道使用时间信息; 信道使用时间信息用于指示 终端发送上行数据的信道使用时间。
S204、 终端根据信道使用时间信息, 在信道使用时间向接入点设备发送 上行数据。
当任一终端接收到接入点设备发送的第一指示消息后,若该终端需要发送 上行数据, 则该终端可以向接入点设备发送第二指示消息, 用于指示待发送上 行数据。
作为一种可行的实施方式,为了使接入点设备能够合理为终端分配发送上 行数据的信道使用时间, 终端可以首先确定需要发送的上行数据的数据量,从 而使接入点设备能够根据该数据量和终端的发送速率确定终端用于发送上行 数据的信道使用时间。
作为另一种可行的实施方式,终端还可以根据需要发送的上行数据的数据 量以及自身的发送速率确定发送上行数据所需的发送时间。终端可以在向接入 点设备发送的第二指示消息中携带上行数据的发送时间信息 ,从而使接入点设 备根据第二指示消息中携带的上行数据的发送时间信息 ,确定该终端用于发送 上行数据的信道使用时间。
终端接收到的第三指示消息可以为接入点设备发送的广播消息,该广播消 息中携带用于终端发送上行数据的信道使用时间信息; 或者, 第三指示消息还 可以为接入点设备对终端发送的第二指示消息的第一确认消息,该第一确认消 息中可以携带用于终端发送上行数据的信道使用时间信息。其中, 广播消息中 携带信道使用时间信息的具体实施方式可参见图 1所示实施例中的相关描述, 在此不再赘述。
可选的, 终端向接入点设备发送第二指示消息后,还可以接收到接入点设 备发送的对该第二指示消息的第二确认消息,该第二确认消息可以用于指示接 入点设备接收到第二指示消息。
为了避免各个终端由于釆用竟争机制向接入点设备发送第二指示消息而 导致某个或某些终端发送失败,终端接收接入点设备发送的第一指示消息中还 可以携带: 第二指示消息的发送时间信息, 第二指示消息的发送时间信息用于 指示终端发送第二指示消息的时间。相应地, 终端可以根据第二指示消息的发 送时间信息, 向接入点设备发送第二指示消息。
可选的, 为了减少终端的耗电量, 终端接收到的接入点设备发送的第一指 示消息中还可以携带: 接入点设备向终端发送第三指示消息的时间信息; 相应 地, 终端向接入点设备发送第二指示消息之后, 可以进入休眠状态。 终端在接 收到接入点设备发送的第三指示消息之前, 可以从休眠状态进入唤醒状态。
本实施例提供的上行数据发送方法,终端接收到接入点设备发送的用于指 示允许终端发送上行数据的指示消息后,如果需要发送上行数据, 则根据该发 送上行数据的指示消息向接入点设备发送用于指示待发送上行数据的指示消 息, 以使接入点设备接收到该用于指示待发送上行数据的指示消息后, 向该终 端发送用于发送上行数据的信道使用时间信息,提高接入点设备分配的上行数 据发送时间的利用率。 图 3为本发明提供的上行数据发送方法另一个实施例的流程图, 如图 3所 示, 本实施例提供了接入点设备为 AP , 终端为 STA的实施场景下, 接入点设 备为各终端分配用于发送上行数据的信道使用时间的具体实施例。 该方法包 括:
S301、 AP向 STA发送信标帧 (Beacon ) , 该信标帧包含用于指示允许 STA访问当前信道指示信息; 或该信标帧包含用于指示 STA在 AP有下行数据 的指示信息; 或该信标帧包含用于指示允许 STA发送上行数据的指示信息。 其中, STA即为终端, 信标帧 Beacon即为第一指示消息。 AP可以通过
Beacon中寻呼指示元素( Page Indication MAP, PIM元素)指示 /寻呼允许发 送上行数据的 STA。 该 PIM元素可以以多个二进制位表示, 每个二进制位可以 对应一个站点 STA。 举例来说, 每个二进制位在整个 PIM元素中的位置序号可 以为对应的 STA的关联标识(Association Identifier, AID ) 。 可以通过将 PIM 元素中对应的二进制为置为 "1 " , 来指示允许对应位置的 STA发送上行数据, 或指示允许对应位置的 STA访问当前信道, 或指示对应位置的 STA该 AP上 有该 STA的下行数据。
当 AP服务的 STA很多时, 为了避免多个 STA釆用竟争信道方式发送第二 指示消息(例如可以是上行数据发送指示 /请求消息(Uplink Poll , UL-Poll ) ) 而产生冲突, 可选的, AP可以为各个 STA分配发送 UL-Poll的时间, 并在第一 指示消息中携带各个 STA发送 U L-Poll的发送时间信息, 该发送时间信息为各 STA在当前信标周期 (Beacon Interval ) 内发送 UL-Poll的时间, 以使各 STA 无需釆用竟争方式发送 UL-Poll , 而是可以在 AP分配的时间上向 AP发送 UL-PolL
需要说明的是, 在本发明的一个实施例中,对于信标帧包含用于指示 STA 在 AP有下行数据的指示信息的情况, 当 STA接收到 AP发送的所述的第一指示 消息, 并发现自身在 AP有緩存的下行数据时, 可以在向 AP发送的指示在后续 约定的时间 (如当前 Beacon周期内) 准备接收下行数据的指示消息中同时包 含指示 STA自身有待发送的上行数据以及待发送上行数据的数据量信息或发 送上行数据所需要的发送时间信息, 这时 STA向 AP发送的指示准备接收下行 数据的指示消息, 就是所述的第二指示消息 U L-Pol I。
作为一种可行的实施方式, AP可以直接在 Beacon中携带用于各个 STA发 送 UL-Poll的发送时间信息, 例如: Beacon中可以直接携带各个 STA的 AID及 其对应的 UL-Poll的发送时间信息即,ΑΡ可以以显式信息在 Beacon中指示各个 STA发送 U L-Poll的发送时间信息。
作为另一种可行的实施方式, AP还可以以隐式信息在 Beacon中指示各个 STA发送 UL-Poll的发送时间信息,在一种实施场景下, PIM元素可以以多个二 进制位表示, 每个二进制位可以对应一个 STA。 在本发明的一个实施例中, 每 个二进制位在 PIM元素中的位置序号与对应 STA的关联标识 AID对应。 这些二 进制位中可以对应包括 AP允许发送上行数据的全部 STA,例如: PIM元素中的 某个二进制位置 "1 " 可以表示允许对应的 STA发送上行数据, 如果 STA有待 发送数据则需要发送第二指示消息; PIM元素中的二进制位置 "0" 表示不允 许对应的 STA发送上行数据, 对应的 STA不需要发送第二指示消息。 而对于某 一允许发送上行数据的 STA , AP与 STA之间可以约定将一定的时间作为时间 单位, 各允许发送上行数据的 STA可以将各自对应的置为 "1 " 的二进制位在 整个 PIM元素中的被置为 "1 " 的二进制位中的序号作为时间倍数, 釆用相同 的时间单位乘以各自对应的时间倍数来确定发送 U L-Poll的发送时间。 的 STA数量及每个 STA发送 UL-Poll所用的时间等因素来确定。
可选的, Beacon中还可以携带: AP向每个 STA发送第三指示消息的发送 时间信息, 以使每个 STA向 AP发送 UL-Poll之后可以进入休眠状态, 在接^ AP 发送的第三指示消息之前可以从休眠状态进入唤醒状态。
作为一个可行的实施方式, AP向每个 STA发送第三指示消息的时间可以 紧接在 AP为所有寻呼的 STA分配 UL-Poll的发送时间结束之后。
S302、 STA向 AP发送 UL-Poll消息。 其中, UL-Poll消息即为第二指示消息。
任一 STA接收到 Beacon后,可以查看自身在 PIM元素中对应的二进制位是 否置 "1 " , 如果置 "1 " , 则表明 AP允许发送上行数据, 或允许访问当前信 道, 或 AP有该 STA的下行数据。
进一步的,如 AP以隐式信息在 Beacon中指示各个 STA发送 UL-Poll的发送 时间, STA还可以釆用默认的时间单位乘以对应的时间倍数来确定发送 UL-Poll的时间。
对于任一 STA, 如果需要发送上行数据, 则可以向 AP发送 UL-Poll消息。 可选的, STA可以确定上行数据的数据量或上行数据的发送时间。 终端向 AP发送的 UL-Poll消息中可以携带上行数据的数据量或上行数据的发送时间信 息, 以使 AP能够根据 UL-Poll消息中携带的上行数据的数据量或上行数据发送 时间信息, 来确定用于每个 STA发送上行数据的信道使用时间。
UL-Poll可以釆用如下表一所示的格式:
Figure imgf000017_0001
表一中, "Frame Control" 包含了帧类型信息, 使得 UL-Poll帧区别于其 它的帧, "Duration" 的值用于指示 STA所需要的上行数据的发送时间信息。 或者, "Duration" 的对应位置还可以设置为 "length" 来表示 STA需要发送 的上行数据的长度信息。 RA表示源 STA, TA表示目的 AP, FCS表示用于对 UL-Poll消息的校验信息。
可选的, STA向 AP发送 UL-Poll消息后, 可进入休眠( doze )状态以节省 电量。 进一步的, 如果 Beacon携带 AP向 STA发送第三指示消息的发送时间信 息, 则 STA可以在接^ AP发送的第三指示消息之前进入唤醒(awake )状态。
S303、 AP向 STA发送对第二指示消息的第二确认消息。
可选的, AP接收到 STA发送的 UL-Poll消息后, 可以立刻向该 STA发送第 二确认消息, 该第二确认消息可以为短的确认消息 (Acknowledge, ACK ) , 以表示接收到 STA发送的 U L-Poll消息。
S304、 AP向 STA发送 PSPM广播帧, 该广播帧中携带用于 STA发送上行 数据的信道使用时间信息。 作为一种可行的实施方式, AP在接收到 STA发送的 UL-Poll消息后, AP 可以在指定的时间向所有 STA广播发送信道分配指示帧 (Power Save Multi Poll , PSMP )作为第三指示消息, 并在 PSMP帧中携带为各 STA分配用于发 送上行数据的信道使用时间。 在这种实施场景下, AP接收到每个 STA发送的 UL-Poll消息后不需要单独响应 ACK确认消息, 而是可以在为各个 STA分配用 于发送上行数据的信道使用时间后广播发送一个 PSM P消息。
PSMP帧可以釆用如下表二所示的格式:
Figure imgf000018_0001
其中, Category表示帧的类型, HT Action表示该帧属于用于高速传输的 控制帧, PSMP parameter Set表示 PSMP的参数集合, PSMP STA Info表示 帧中包括的为 STA指定的信道使用时间信息元素,该信息元素中可包含不同的 信道使用时间格式, 通过其中的 STA-INFO TYPE来区分时间格式。 Repeated N_STA times ( N_STA is a subfield of the PSMP parameter Set field )表示: 当需要同时为多个 STA指定信道使用时间时, 可以在 PSMP帧中包含多个 PSMP STA Info信息元素。
其中, PSMP消息中对于每个 STA可以包括如下表三所示的字段:
Figure imgf000018_0002
其中, STA-INFO表示 PSMP中的 STA-INFO元素, 可将该元素的类型设 为 "类型 3" ( TYPE=3 ) , STAJD表示 STA的标识, PIM-UTT Start offset 表示为该 STA分配的发送上行数据的起始时间, PIM-UTT Duration表示为该
STA分配的发送上行数据的持续时间。 图 4所示为 AP为 STA1、 STA2和 STA3分配上行数据发送时间以完成上行 数据发送的示意图。 其中, AP周期性起广播携带 PIM元素的 Beacon帧, 即第 一指示消息。 STA1、 STA2和 STA3接收到第一指示消息后, 分别向 AP发送 UL-Poll , 即第二指示消息。 AP接收到 STA1、 STA2和 STA3分别发送的 UL-Poll 后,发送携带用于 STA1、 STA2和 STA3发送上行数据的信道使用时间的 PSMP 广播帧, STA1、 STA2和 STA3接收到 PSMP广播帧后, 可以在各自对应的信 道使用时间上向 AP发送上行数据。
如图 5所示, AP可以在接收到 STA1、 STA2和 STA3发送的 UL-Poll消息(第 二指示消息)后, 分别向 STA1、 STA2和 STA3发送对于该 UL-Poll消息的确认 消息 (第二确认消息) ACK, 第二确认消息用于表示 AP接收到 UL-Poll , AP 可以在接收到 STA1、 STA2和 STA3发送的 UL-Poll消息 (第二指示消息)后, 向这些 STA发送携带用于 STA1、 STA2和 STA3发送上行数据的信道使用时间 的 PSMP广播帧, STA1、 STA2和 STA3接收到 PSMP广播帧后, 可以在各自 对应的信道使用时间上向 AP发送上行数据。
作为另一种可行的实施方式, 除了 PSMP帧之外, AP还可以釆用其他类 型的广播帧,举例来说,如图 6所示,可以釆用新定义的媒体接入控制帧( Media Access Control , MAC帧 M乍为第三指示消息。除了其中已有的帧控制 ( Frame control ) 、 帧发送持续时间 (Duration/ID ) 、 校验位 ( FCS )域外, 还可以新 定义 UL-Poll比特位域(UL-Poll Bitmap field ) 和上行数据传输时间域( UL Traffic Time field )两个域。其中 UL-Poll Bitmasp field可以包含多个二进制位, 每个二进制位可以与一个 STA对应, 具体对应规则可以参考 Beacon中的 PIM 的定义,如置为 "1 "的二进制位可以表示 AP从以该二进制所在 UL-Poll Bitmap field中的位置序号作为 AID的 STA正确接收到了 UL-Poll消息。 UL Traffic Time field中也可以包括多个二进制字节, 每个字节包括 8个二进制位, 每两个字节 表示一个用于 STA发送上行数据的开始时间,上行数据的发送在下一个开始时 间之前结束, 此外,还可以在表示每个 STA发送上行数据的开始时间的两个字 节之后用一个或多个字节进一步指示对应一个该开始时间的用于发送上行数 据的持续时间。
作为另一种可行的实施方式, 当 AP接收到 STA发送的 UL-Poll消息后, 可 以向该 STA发送对 UL-Poll消息的第一确认消息, 并在该第一确认消息中携带 为该 STA分配的用于发送上行数据的信道使用时间信息。
图 7所示为作为 AP向 STA1、 STA2和 STA3分别发送第二确认消息完成上 行数据传输的示意图。 其中, AP周期性起广播携带 PIM的 Beacon , 即第一指 示消息。 STA1、 STA2和 STA3接收到第一指示消息后, 分别向 AP发送 UL-Poll 消息, 即第二指示消息。 AP在接收到 STA1、 STA2或 STA3发送的 UL-Poll后, 紧接每个 UL-Poll消息分别向 STA1、STA2和 STA3发送对 UL-Poll消息的第一确 认消息 ACK1 ( x0 ) 、 ACK2 ( x2 )和 ACK3 ( x4 ) , ACK1 ( χθ ) 中可以携带 用于 STA1发送上行数据的信道使用开始时间, 如 x0, ACK2(x2)可以携带用于 STA2发送上行数据的信道使用开始时间,如 x2, ACK3( x4 )可以携带用于 STA3 发送上行数据的信道使用开始时间, 如 x4。 STA1、 STA2和 STA3可以在各自 对应的信道使用时间上向 AP发送上行数据。
S305、 STA在第三指示消息中携带的信道使用时间上向 AP发送上行数据。 本实施例提供的上行数据发送方法, AP通过 Beacon帧指示 STA发送上 行数据,但 STA可能由于周边同频无线信号干扰的原因, 没有正确接收到来自 AP的 Beacon 帧,因此无法向 AP发送 UL-Poll ,或者 STA可能向 AP发送 UL-Poll 但 AP没有正确接收, 或者, STA不需要向 AP发送上行数据, 上述实施场景下, AP后续不会为 STA分配用于发送上行数据的信道使用时间, 只有当 AP接收到 STA的待上行数据的指示消息后才为 STA分配用于发送上行数据的信道使用 时间, 并在指定的时间广播为各 STA分配的用于发送上行数据的信道使用时 间, 从而提高接入点设备分配的上行数据发送时间的利用率。 图 8为本发明提供的接入点设备一个实施例的结构示意图,如图 8所示,该 接入点设备包括: 发送器 1 1和接收器 12;
发送器 1 1 ,用于向终端发送第一指示消息,第一指示消息用于指示允许终 端访问当前信道; 或第一指示消息用于指示终端在所述接入点设备有下行数 据; 或第一指示消息用于指示允许终端发送上行数据; 接收器 12 ,用于接收终端根据第一指示消息发送的第二指示消息,第二指 示消息用于指示第二终端待发送上行数据;
发送器 1 1还用于: 在接收器 12接收到第二指示消息后, 向终端发送第三 指示消息, 第三指示消息中携带信道使用时间信息; 信道使用时间信息用于指 示终端发送上行数据的信道使用时间。
图 9为本发明提供的接入点设备又一个实施例的结构示意图, 如图 9所示, 该接入点设备包括: 发送器 1 1、 接收器 12和处理器 13;
可选的,接收器 12接收的第二指示消息中携带终端的上行数据的数据量或 上行数据的发送时间信息。
相应地,处理器 13, 可以用于根据第二指示消息中携带的上行数据的数据 量或上行数据的发送时间信息, 确定信道使用时间信息。
可选的,发送器 1 1可以具体用于: 向终端发送广播消息, 广播消息中携带 信道使用时间信息; 或者, 向终端发送对第二指示消息的第一确认消息, 第一 确认消息中携带信道使用时间信息。
可选的, 发送器 1 1还用于: 在接收器 12接收终端发送的第二指示消息之 后, 向终端发送对第二指示消息的第二确认消息, 第二确认消息用于指示接入 点设备接收到第二指示消息。
可选的,发送器 1 1发送的第一指示消息还携带: 第二指示消息的发送时间 信息,第二指示消息的发送时间信息用于指示终端发送第二指示消息的发送时 间。
可选的, 发送器 1 1发送的第一指示消息还携带: 发送器 1 1向终端发送第 三指示消息的时间信息,以使终端向接入点设备发送第二指示消息之后进入休 眠状态, 在接收发送器 1 1发送的第三指示消息之前从休眠状态进入唤醒状态。
本发明实施例提供的接入点设备,与本发明实施例提供的上行数据发送方 法相对应, 为上行数据发送方法的执行设备, 其执行上行数据发送方法的具体 过程可参见本发明图 1、 图 3-图 7所示的方法实施例, 在此不再赘述。
本实施例提供的接入点设备,向终端发送用于指示允许发送上行数据的指 示消息后,如果接收到终端根据该发送上行数据的指示消息发送的用于指示待 发送上行数据的指示消息 ,则向该终端发送用于发送上行数据的信道使用时间 信息, 提高接入点设备分配的上行数据发送时间的利用率。 图 10为本发明提供的终端一个实施例的结构示意图, 如图 10所示, 该终 端包括: 接收器 21和发送器 22; 接收器 21 ,用于接收接入点设备发送的第一指示消息,第一指示消息用于 指示允许终端访问当前信道;或第一指示消息用于指示终端在接入点设备有下 行数据; 或第一指示消息用于指示允许终端发送上行数据;
发送器 22 ,用于根据第一指示消息向接入点设备发送第二指示消息,第二 指示消息用于指示终端待发送上行数据;
接收器 21 ,还用于接收接入点设备接收到第二指示消息后发送的第三指示 消息, 第三指示消息中携带信道使用时间信息; 信道使用时间信息用于指示终 端发送上行数据的信道使用时间;
发送器 22 ,还用于根据信道使用时间信息,在信道使用时间向接入点设备 发送上行数据。
图 1 1为本发明提供的终端又一个实施例的结构示意图, 如图 1 1所示, 该 终端包括: 接收器 21、 发送器 22和处理器 23;
处理器 23, 用于确定上行数据的数据量或上行数据的发送时间信息; 相应地,发送器 22向接入点设备发送的第二指示消息中携带上行数据的数 据量或上行数据的发送时间信息,以使接入点设备根据上行数据的数据量或上 行数据的发送时间信息, 确定信道使用时间信息。
可选的, 第三指示消息具体为接入点设备发送的广播消息, 广播消息中携 带信道使用时间信息;接收器 21可以具体用于:接收接入点设备发送的广播消 息; 或者, 第三指示消息具体为接入点设备发送的对第二指示消息的第一确认 消息, 第一确认消息中携带信道使用时间信息; 接收器 21具体用于: 接收接入 点设备发送的第一确认消息。
可选的,接收器 21还可以用于:接收接入点设备发送的对第二指示消息的 第二确认消息, 第二确认消息用于指示接入点设备接收到第二指示消息。
可选的,接收器 21接收的第一指示消息中还携带: 第二指示消息的发送时 间信息, 第二指示消息的发送时间信息用于指示终端发送第二指示消息的时 间;
相应地,发送器 22可以具体用于:根据第一指示消息中携带的第二指示消 息的发送时间信息, 向接入点设备发送第二指示消息。
可选的, 第一指示消息中还携带: 接入点设备向终端发送第三指示消息的 时间信息; 处理器 23还可以用于: 在发送器 22向接入点设备发送第二指示消 息之后, 控制终端进入休眠状态; 处理器 23还可以用于: 在接收器 21接收第 三指示消息之前, 控制终端从休眠状态进入唤醒状态。
本发明实施例提供的终端,与本发明实施例提供的上行数据发送方法相对 应, 为上行数据发送方法的执行设备, 其执行上行数据发送方法的具体过程可 参见本发明图 2-图 7所示的方法实施例, 在此不再赘述。
本实施例提供的终端,接收接入点设备发送的用于指示允许终端发送上行 数据的指示消息后,如果需要发送上行数据, 则根据该发送上行数据的指示消 息向接入点设备发送用于指示待发送上行数据的指示消息,以使接入点设备接 收到该用于指示待发送上行数据的指示消息后,向该终端发送用于发送上行数 据的信道使用时间信息, 提高接入点设备分配的上行数据发送时间的利用率。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁,仅以上述 各功能模块的划分进行举例说明, 实际应用中, 可以根据需要而将上述功能分 配由不同的功能模块完成, 即将装置的内部结构划分成不同的功能模块, 以完 成以上描述的全部或者部分功能。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, 模块或单元的划分, 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。 另一点, 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, 可以是电性, 机械或其它的形式。 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 来实现本实施例方案的目的。
另外, 在本申请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釆用硬件的形式实现, 也可以釆用软件功能单元的 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, 本申 请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)或处理器 (processor )执行本申请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, 以上实施例仅用以说明本申请的技术方案, 而非对其限制; 尽 管参照前述实施例对本申请进行了详细的说明,本领域的普通技术人员应当理 解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分 技术特征进行等同替换; 而这些修改或者替换, 并不使相应技术方案的本质脱 离本申请各实施例技术方案的精神和范围。

Claims

权 利 要求 书
1、 一种通知上行数据发送的信道使用时间的方法, 其特征在于, 包括: 接入点设备向终端发送第一指示消息,所述第一指示消息用于指示允许所 述终端访问当前信道;或所述第一指示消息用于指示所述终端在所述接入点设 备有下行数据; 或所述第一指示消息用于指示允许所述终端发送上行数据; 所述接入点设备接收所述终端根据所述第一指示消息发送的第二指示消 息; 所述第二指示消息用于指示所述终端待发送上行数据;
所述接入点设备在接收到所述第二指示消息后,向所述终端发送第三指示 消息, 所述第三指示消息中携带信道使用时间信息; 所述信道使用时间信息用 于指示所述终端发送上行数据的信道使用时间。
2、根据权利要求 1所述的方法, 其特征在于, 所述第二指示消息中携带所 述终端的上行数据的数据量或上行数据的发送时间信息。
3、根据权利要求 2所述的方法, 其特征在于, 所述接入点设备在接收到所 述第二指示消息后, 向所述终端发送第三指示消息之前, 还包括:
所述接入点设备根据所述第二指示消息中携带的所述上行数据的数据量 或上行数据的发送时间信息, 确定所述信道使用时间信息。
4、 根据权利要求 1 -3任一项所述的方法, 其特征在于, 所述接入点设备向 所述终端发送第三指示消息, 包括:
所述接入点设备向所述终端发送广播消息 ,所述广播消息中携带所述信道 使用时间信息; 或者,
所述接入点设备向所述终端发送对所述第二指示消息的第一确认消息,所 述第一确认消息中携带所述信道使用时间信息。
5、 根据权利要求 1 -4任一项所述的方法, 其特征在于, 所述接入点设备接 收所述终端根据所述第一指示消息发送的所述第二指示消息之后, 还包括: 所述接入点设备向所述终端发送对所述第二指示消息的第二确认消息,所 述第二确认消息用于指示所述接入点设备接收到所述第二指示消息。
6、 根据权利要求 1 -5任一项所述的方法, 其特征在于, 所述第一指示消息 中还携带: 第二指示消息的发送时间信息, 所述第二指示消息的发送时间信息 用于指示所述终端发送所述第二指示消息的时间。
7、 根据权利要求 1 -6任一项所述的方法, 其特征在于, 所述第一指示消息 中还携带: 所述接入点设备向所述终端发送所述第三指示消息的时间信息, 以 使所述终端向所述接入点设备发送所述第二指示消息之后进入休眠状态,在接 收所述接入点设备发送的所述第三指示消息之前从休眠状态进入唤醒状态。
8、 一种上行数据发送方法, 其特征在于, 包括:
终端接收接入点设备发送的第一指示消息 ,所述第一指示消息用于指示允 许所述终端访问当前信道;或所述第一指示消息用于指示所述终端在所述接入 点设备有下行数据; 或所述第一指示消息用于指示允许所述终端发送上行数 据;
所述终端根据所述第一指示消息向所述接入点设备发送第二指示消息,所 述第二指示消息用于指示所述终端待发送上行数据;
所述终端接收所述接入点设备接收到所述第二指示消息后发送的第三指 示消息, 所述第三指示消息中携带信道使用时间信息; 所述信道使用时间信息 用于指示所述终端发送上行数据的信道使用时间;
所述终端根据所述信道使用时间信息,在所述信道使用时间向所述接入点 设备发送上行数据。
9、根据权利要求 8所述的方法, 其特征在于, 所述终端根据所述第一指示 消息向所述接入点设备发送第二指示消息之前, 还包括:
所述终端确定上行数据的数据量或上行数据的发送时间信息;
所述终端向所述接入点设备发送的所述第二指示消息中携带所述上行数 据的数据量或上行数据的发送时间信息,以使所述接入点设备根据所述上行数 据的数据量或上行数据的发送时间信息, 确定所述信道使用时间信息。
10、 根据权利要求 8或 9所述的方法, 其特征在于, 所述第三指示消息具 体为所述接入点设备发送的广播消息,所述广播消息中携带所述信道使用时间 信息; 所述终端接收所述接入点设备发送的第三指示消息为: 所述终端接收所 述接入点设备发送的所述广播消息; 或者,
所述第三指示消息具体为所述接入点设备发送的对所述第二指示消息的 第一确认消息, 所述第一确认消息中携带所述信道使用时间信息; 所述终端接 收所述接入点设备发送的第三指示消息为:所述终端接收所述接入点设备发送 的所述第一确认消息。
1 1、根据权利要求 8-10任一项所述的方法, 其特征在于, 所述终端根据所 述第一指示消息向所述接入点设备发送第二指示消息之后, 还包括:
所述终端接收所述接入点设备发送的对所述第二指示消息的第二确认消 息, 所述第二确认消息用于指示所述接入点设备接收到所述第二指示消息。
12、根据权利要求 8-1 1任一项所述的方法, 其特征在于, 所述第一指示消 息中还携带: 第二指示消息的发送时间信息, 所述第二指示消息的发送时间信 息用于指示所述终端发送所述第二指示消息的时间;
所述终端根据所述第一指示消息向所述接入点设备发送第二指示消息,具 体为:
所述终端根据所述第一指示消息中携带的所述第二指示消息的发送时间 信息, 向所述接入点设备发送所述第二指示消息。
13、根据权利要求 8-12任一项所述的方法, 其特征在于, 所述第一指示消 息中还携带: 所述接入点设备向所述终端发送所述第三指示消息的时间信息; 所述终端根据所述第一指示消息向所述接入点设备发送第二指示消息之 后, 还包括:
所述终端进入休眠状态;
所述终端接收所述接入点设备接收到所述第二指示消息后发送的第三指 示消息之前, 还包括:
所述终端从休眠状态进入唤醒状态。
14、 一种接入点设备, 其特征在于, 包括:
发送器, 用于向终端发送第一指示消息, 所述第一指示消息用于指示允许 所述终端访问当前信道;或所述第一指示消息用于指示所述终端在所述接入点 设备有下行数据; 或所述第一指示消息用于指示允许所述终端发送上行数据; 接收器, 用于接收所述终端根据所述第一指示消息发送的第二指示消息, 所述第二指示消息用于指示所述第二终端待发送上行数据;
所述发送器还用于: 在所述接收器接收到所述第二指示消息后, 向所述终 端发送第三指示消息, 所述第三指示消息中携带信道使用时间信息; 所述信道 使用时间信息用于指示所述终端发送上行数据的信道使用时间。
15、 根据权利要求 14所述的接入点设备, 其特征在于, 所述接收器接收 的所述第二指示消息中携带所述终端的上行数据的数据量或上行数据的发送 时间信息。
16、 根据权利要求 15所述的接入点设备, 其特征在于, 还包括: 处理器,用于根据所述第二指示消息中携带的所述上行数据的数据量或上 行数据的发送时间信息, 确定所述信道使用时间信息。
17、 根据权利要求 14-16任一项所述的接入点设备, 其特征在于, 所述发 送器具体用于: 向所述终端发送广播消息, 所述广播消息中携带所述信道使用 时间信息; 或者, 向所述终端发送对所述第二指示消息的第一确认消息, 所述 第一确认消息中携带所述信道使用时间信息。
18、 根据权利要求 14-17任一项所述的接入点设备, 其特征在于, 所述发 送器还用于: 在所述接收器接收所述终端发送的第二指示消息之后, 向所述终 端发送对所述第二指示消息的第二确认消息,所述第二确认消息用于指示所述 接入点设备接收到所述第二指示消息。
19、 根据权利要求 14-18任一项所述的接入点设备, 其特征在于, 所述发 送器发送的所述第一指示消息还携带: 第二指示消息的发送时间信息, 所述第 二指示消息的发送时间信息用于指示所述终端发送所述第二指示消息的发送 时间。
20、 根据权利要求 14-19任一项所述的接入点设备, 其特征在于, 所述发 送器发送的所述第一指示消息还携带:所述发送器向所述终端发送所述第三指 示消息的时间信息,以使所述终端向所述接入点设备发送所述第二指示消息之 后进入休眠状态,在接收所述发送器发送的所述第三指示消息之前从休眠状态 进入唤醒状态。
21、 一种终端, 其特征在于, 包括:
接收器, 用于接收接入点设备发送的第一指示消息, 所述第一指示消息用 于指示允许所述终端访问当前信道;或所述第一指示消息用于指示所述终端在 所述接入点设备有下行数据;或所述第一指示消息用于指示允许所述终端发送 上行数据;
发送器, 用于根据所述第一指示消息向所述接入点设备发送第二指示消 息, 所述第二指示消息用于指示所述终端待发送上行数据;
所述接收器 ,还用于接收所述接入点设备接收到所述第二指示消息后发送 的第三指示消息, 所述第三指示消息中携带信道使用时间信息; 所述信道使用 时间信息用于指示所述终端发送上行数据的信道使用时间;
所述发送器,还用于根据所述信道使用时间信息, 在所述信道使用时间向 所述接入点设备发送上行数据。
22、 根据权利要求 21所述的终端, 其特征在于, 还包括:
处理器, 用于确定上行数据的数据量或上行数据的发送时间信息; 所述发送器向所述接入点设备发送的所述第二指示消息中携带所述上行 数据的数据量或上行数据的发送时间信息 ,以使所述接入点设备根据所述上行 数据的数据量或上行数据的发送时间信息, 确定所述信道使用时间信息。
23、 根据权利要求 21或 22所述的终端, 其特征在于, 所述第三指示消息 具体为所述接入点设备发送的广播消息,所述广播消息中携带所述信道使用时 间信息; 所述接收器具体用于: 接收所述接入点设备发送的所述广播消息; 或 者,所述第三指示消息具体为所述接入点设备发送的对所述第二指示消息的第 一确认消息, 所述第一确认消息中携带所述信道使用时间信息; 所述接收器具 体用于: 接收所述接入点设备发送的所述第一确认消息。
24、 根据权利要求 21 -23任一项所述的终端, 其特征在于, 所述接收端还 用于: 接收所述接入点设备发送的对所述第二指示消息的第二确认消息, 所述 第二确认消息用于指示所述接入点设备接收到所述第二指示消息。
25、 根据权利要求 21 -24任一项所述的终端, 其特征在于, 所述接收器接 收的所述第一指示消息中还携带: 第二指示消息的发送时间信息, 所述第二指 示消息的发送时间信息用于指示所述终端发送所述第二指示消息的时间; 所述发送器具体用于:根据所述第一指示消息中携带的所述第二指示消息 的发送时间信息, 向所述接入点设备发送所述第二指示消息。
26、 根据权利要求 21 -25任一项所述的终端, 其特征在于, 所述第一指 示消息中还携带:所述接入点设备向所述终端发送所述第三指示消息的时间信 息; 所述处理器还用于: 在所述发送器向所述接入点设备发送所述第二指示消 息之后, 控制所述终端进入休眠状态; 所述处理器还用于: 在所述接收器接收 所述第三指示消息之前, 控制所述终端从休眠状态进入唤醒状态。
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