WO2015096065A1 - 信息发送方法及装置 - Google Patents

信息发送方法及装置 Download PDF

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Publication number
WO2015096065A1
WO2015096065A1 PCT/CN2013/090431 CN2013090431W WO2015096065A1 WO 2015096065 A1 WO2015096065 A1 WO 2015096065A1 CN 2013090431 W CN2013090431 W CN 2013090431W WO 2015096065 A1 WO2015096065 A1 WO 2015096065A1
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WO
WIPO (PCT)
Prior art keywords
station
frame
sending
time period
reserved
Prior art date
Application number
PCT/CN2013/090431
Other languages
English (en)
French (fr)
Inventor
李云波
马驰翔
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 CN201380081853.6A priority Critical patent/CN105874847B/zh
Priority to PCT/CN2013/090431 priority patent/WO2015096065A1/zh
Publication of WO2015096065A1 publication Critical patent/WO2015096065A1/zh
Priority to US15/170,670 priority patent/US20160295612A1/en

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Classifications

    • 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
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/002—Transmission of channel access control information
    • 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
    • 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 communication technologies, and in particular, to a method and an apparatus for transmitting information.
  • CSMA/CA Carrier Sense Multiple Access with Collision Avoidance
  • CSMA/CA Carrier Sense Multiple Access with Collision Avoidance
  • CSMA/CA Collision Avoidance
  • a mechanism for reserving the channel by setting a Network Allocation Vector (NAV) is introduced.
  • the NAV is used to specify how long the transmission station is expected to occupy the channel, and the NAV-set site is specified in the NAV. It is necessary to remain silent during the time period to ensure that the two stations can communicate without interference during this time period.
  • the prior art sets NAV for all stations around the transmitting end and the receiving end by means of Request to Send/Clear to Send (RTS/CTS) frame interaction, and reserves a certain period of time from the current frame. Come down. When the data has been sent, but there is still time left in the reserved time, the remaining reserved time can be released by sending a Contention free-end (CF-end) frame.
  • RTS/CTS Request to Send/Clear to Send
  • the embodiments of the present invention provide a method and an apparatus for transmitting information, so as to implement flexible channel reservation and release in a scenario in which some data is discontinuously transmitted.
  • an embodiment of the present invention provides a method for sending information, including:
  • the sending station further includes r before sending the data in the at least two non-contiguous time periods
  • the sending station receives the response information of the reply of the target station, where the response information is used to indicate that the receiving station cannot initiate data transmission actively within the at least two non-contiguous time periods.
  • the indication information is sent by using one frame, where the frame includes information for indicating the at least two non-contiguous time periods; or
  • the indication information is sent by using at least two frames, where the at least two frames respectively include information indicating at least one of the at least two non-contiguous time periods, and the at least two frames The next frame in the frame is sent within the time period indicated by the previous frame.
  • the method further includes:
  • the transmitting station determines the length of the at least two non-contiguous time segments according to a period of data to be transmitted and an amount of data sent in each period.
  • the at least two non-contiguous time periods are used for transmitting uplink data, or both are used for transmitting downlink data, or partially for transmitting uplink data and partly for transmitting downlink data.
  • an embodiment of the present invention provides a method for sending information, including:
  • the target station receives the indication information sent by the sending station, where the indication information is used to indicate that the target station cannot initiate data transmission actively for at least two non-contiguous time periods;
  • the target station receives data transmitted by the transmitting station during the at least two non-contiguous time periods.
  • the method further includes:
  • the target station replies to the sending station with response information, where the response information is used to indicate that the receiving station cannot initiate data transmission actively within the at least two non-contiguous time periods.
  • the target station replies to the sending station with the response information, including: if the indication information is sent through a frame, the target station sends a response frame to the sending station; or
  • the target station sends at least two response frames correspondingly to the sending station.
  • the at least two non-contiguous time periods are used for transmitting uplink data, or both are used for transmitting downlink data, or partially for transmitting uplink data and partly for transmitting downlink data.
  • an embodiment of the present invention provides a method for sending information, including:
  • the sending station sends the indication information, where the indication information is used to indicate a reserved time period; the sending station sends data in the reserved time period;
  • the reserved time period is a continuous time period or at least two non-contiguous time periods.
  • an embodiment of the present invention provides a method for sending information, including:
  • the receiving station receives the indication information sent by the sending station, where the indication information is used to indicate a reserved time period;
  • the receiving station receives the release information sent by the sending station in the reserved time period, where the release information is used to instruct the receiving station to release at least part of the remaining time period of the time period segment.
  • the reserved time period is a continuous time period or at least two non-contiguous time periods.
  • an embodiment of the present invention provides a sending station, including:
  • the indication module is configured to send the indication information after the contention channel succeeds, where the indication information is used to indicate that the receiving station cannot initiate data transmission actively for at least two non-contiguous time periods; and the sending module is configured to: Data is sent in two non-contiguous time periods.
  • the sending station further includes:
  • a receiving module configured to receive response information of the target station reply, where the response information is used to indicate that the receiving station cannot initiate data transmission actively within the at least two non-contiguous time periods.
  • the indication information is sent by using one frame, where the frame includes information for indicating the at least two non-contiguous time periods; or
  • the indication information is sent by using at least two frames, where the at least two frames respectively include information indicating at least one of the at least two non-contiguous time periods, and the The latter of the at least two frames is transmitted during the time period indicated by the previous frame.
  • the sending station further includes:
  • a determining module configured to determine a length of the at least two non-contiguous time segments according to a period of data to be sent and an amount of data sent in each period.
  • the at least two non-contiguous time periods are used for transmitting uplink data, or both are used for transmitting downlink data, or partially for transmitting uplink data and partly for transmitting downlink data.
  • an embodiment of the present invention provides a target site, including:
  • the first receiving module is configured to receive the indication information sent by the sending station, where the indication information is used to indicate that the target station cannot initiate data transmission actively for at least two non-contiguous time periods;
  • a second receiving module configured to receive data sent by the sending station in the at least two non-contiguous time periods.
  • the target site further includes:
  • a replying module configured to reply to the sending station with response information, where the response information is used to indicate that the receiving station cannot initiate data transmission actively within the at least two non-contiguous time periods.
  • the replying module is specifically configured to: if the indication information is sent through one frame, send a response frame to the sending station; or
  • the sending station correspondingly transmits at least two response frames.
  • the at least two non-contiguous time periods are used for transmitting uplink data, or both are used for transmitting downlink data, or partially for transmitting uplink data and partly for transmitting downlink data.
  • an embodiment of the present invention provides a sending station, including:
  • An indication module configured to send indication information, where the indication information is used to indicate a reserved time period
  • a first sending module configured to send data during the reserved time period
  • the second sending module is configured to send the release information in the reserved time period, where the release information is used to instruct the receiving station to release at least a part of the remaining time period of the time period.
  • the reserved time period is a continuous period of time or at least two non-continuous period.
  • an embodiment of the present invention provides a receiving station, including:
  • the first receiving module receives the indication information sent by the sending station, where the indication information is used to indicate a reserved time period;
  • a second receiving module configured to receive, in the reserved time period, the release information sent by the sending station, where the release information is used to indicate that the receiving station releases the remaining time period of the time period At least part of the time period.
  • the reserved time period is a continuous time period or at least two non-contiguous time periods.
  • the sending station sends the indication information indicating that the receiving station cannot initiate data transmission actively for at least two non-contiguous time periods, and sends data in the at least two non-contiguous time periods, thereby implementing
  • channel reservation can be flexibly reserved for multiple periods of discontinuous time periods through one channel competition, which saves competition overhead and saves channel resources.
  • Embodiment 1 is a schematic flowchart of Embodiment 1 of an information sending method according to the present invention
  • Embodiment 1 is a first schematic diagram of Embodiment 1 of an information sending method according to the present invention
  • Embodiment 3 is a second schematic diagram of Embodiment 1 of an information sending method according to the present invention.
  • FIG. 4 is a schematic diagram 3 of Embodiment 1 of an information sending method according to the present invention.
  • FIG. 5 is a schematic diagram 4 of Embodiment 1 of an information sending method according to the present invention.
  • FIG. 6 is a schematic diagram 5 of Embodiment 1 of an information sending method according to the present invention.
  • Embodiment 7 is a schematic flowchart of Embodiment 2 of an information sending method according to the present invention.
  • Embodiment 8 is a schematic flowchart of Embodiment 3 of an information sending method according to the present invention.
  • FIG. 9 is a first schematic diagram of Embodiment 3 of a method for transmitting information according to the present invention.
  • FIG. 10 is a second schematic diagram of Embodiment 3 of the method for transmitting information according to the present invention.
  • 11 is a schematic flowchart of Embodiment 4 of the method for transmitting information according to the present invention
  • Embodiment 12 is a schematic flowchart of Embodiment 5 of the method for transmitting information according to the present invention.
  • FIG. 13 is a schematic diagram 1 of Embodiment 5 of the method for transmitting information according to the present invention.
  • FIG. 14 is a schematic diagram 2 of Embodiment 5 of the information sending method of the present invention.
  • Embodiment 6 is a schematic flowchart of Embodiment 6 of the method for transmitting information according to the present invention.
  • Embodiment 7 is a schematic flowchart of Embodiment 7 of the method for transmitting information according to the present invention.
  • Embodiment 8 is a schematic flowchart of Embodiment 8 of the method for transmitting information according to the present invention.
  • 21 is the fourth embodiment of the transmitting station of the present invention.
  • 22 is the target station embodiment 1 of the present invention.
  • 25 is the fourth embodiment of the target site of the present invention.
  • 26 is the fifth embodiment of the transmitting station of the present invention.
  • 31 is the second embodiment of the receiving station of the present invention.
  • FIG. 1 is a schematic flowchart of Embodiment 1 of a method for sending information according to the present invention. As shown in FIG. 1 , the method in this embodiment may include:
  • Step 101 Send a station competition channel.
  • channel resources are shared between multiple sites through a CSMA/CA contention mechanism, that is, when a station needs to transmit data, it needs to contend for a channel.
  • the basic principle of the CSMA/CA competition mechanism is that each station listens to the free/busy state of the channel before sending data. Only after the channel is idle for a certain length of time (for example, DIFS), the backoff count is started. Ways can reduce collisions. The value of the backoff count is randomly selected from the backoff window. When the channel starts to be busy again before the value of a backoff counter is reduced to zero, the backoff count will be suspended. Wait for the next channel idle for a certain period of time before continuing the backoff count. Repeat the above process until the backoff counter value is reduced to zero. That is, when the backoff count ends, it means that the transmitting station competes for a successful channel.
  • Step 102 The sending station sends the indication information after the contention channel succeeds, where the indication information is used to indicate that the receiving station cannot initiate data transmission actively for at least two non-contiguous time periods.
  • the indication information may be sent by using one frame, where the frame includes information for indicating the at least two non-contiguous time segments; or, the indication information is sent by using at least two frames, where The at least two frames respectively include information indicating at least one of the at least two non-contiguous time periods, and the next one of the at least two frames is a time indicated by the previous frame Sent within the segment.
  • the indication information is sent, and the indication information is used to indicate that the receiving station (ie, the station that receives the indication information) cannot initiate data transmission actively for at least two non-contiguous time periods.
  • the indication information may be a reserved frame, such as an RTS frame or a CTS-to-sdf frame or a data frame, where the MAC header of the reserved frame carries a field for setting a NAV, for example, a Duration field.
  • the indication information may be sent by using one frame, where the frame includes information for indicating the at least two discontinuous time segments; or, the indication information is sent by using at least two frames, where And the at least two frames respectively include information indicating at least one of the at least two non-contiguous time segments, and the next one of the at least two frames is indicated by the previous frame Sent during the time period.
  • the first implementation manner is: when the indication information is sent by using a reserved frame, the duration field carried in the MAC header of the reserved frame may be one or more, when carrying a Duration field The duration field corresponds to at least two different starting moments, that is, the reserved frame includes information for indicating the at least two non-contiguous time segments.
  • the indication message may be When the at least two reserved frames are sent, the Duration field carried in the MAC header of the reserved frames may be one or more, that is, the at least two reserved frames respectively include the at least two Information of at least one of the non-contiguous time periods, and the latter one of the at least two reserved frames is transmitted within a time period indicated by the previous reserved frame.
  • the reserved frame is configured to indicate that the receiving station that receives the reserved frame cannot actively initiate data transmission for at least two non-contiguous time periods, thereby successfully reserving at least two non-contiguous time segments, where
  • the receiving site includes: a target site (a site where the transmitting site is to perform data transmission) and a non-target site (a receiving site other than the target site).
  • the non-target station sets the duration indicated by the duration fields to a NAV value, and ensures that the at least two non-contiguous time periods (ie, the NAV time) are not actively performed. Any transmission, even if the channel is idle, can not be sent.
  • the NAV time period is called a transmission opportunity (TXOP), and the site that successfully sets NAV for other sites is called a transmission opportunity holder (TXOP holder).
  • TXOP transmission opportunity
  • TXOP holder transmission opportunity holder
  • the reservation The time segment information can be obtained according to the actual situation information. For example, for the periodic service, it can be determined according to information such as the required reserved time length in each cycle, and the uplink and downlink services can be determined according to the known division method in the uplink and downlink services. The information such as the length of the reserved time required during the line period is determined, and some information can be determined according to known statistical summaries, and the information such as the reserved time period will be determined.
  • the sending station sends an indication message through a reserved frame
  • the reserved frame may adopt different frame formats, for example, “start time 1+ duration 1+ start time” 2+ duration 2+...+starting time n+ duration n", or "starting time 1 + end time 1 + start time 2+ end time 2+... + start time n + end time n", etc. Format, the n can be determined according to a specific actual situation, wherein the time information is obtained according to the actual application. Further, if the start time is omitted in the reserved frame format, the start time may be default, for example, starting from the end of the current frame.
  • the method for the sending station to send the indication message by using the at least two frames after the contention channel succeeds may include two methods of simultaneously multi-segment reservation and distributed multi-segment reservation.
  • the multi-segment reservation technology may simultaneously reserve a plurality of non-reserved frames by the transmitting station after the contention channel succeeds, and send a reserved frame indicating that the receiving station cannot initiate data transmission actively for at least two non-contiguous time periods.
  • the step-by-step multi-segment reservation technology may send, by the sending station, at least two intervals after the contention channel succeeds, indicating that the receiving station cannot initiate data transmission actively in at least one of the at least two non-continuous time periods a reserved frame, wherein the next reserved frame of the at least two reserved frames is sent within a time period indicated by the previous reserved frame.
  • FIG. 2 is a schematic diagram 1 of the first embodiment of the information transmission method according to the present invention.
  • the RTS frame carries at least two Duration fields or one Duration field in the MAC header of the RTS frame but corresponds to a plurality of different starting moments, and the field is used to set the NAV, that is, the RTS frame is used to indicate that the receiving station is at least Data transmission cannot be initiated actively during two non-contiguous time periods.
  • the duration indicated by the Duration fields is set to the NAV value, and at least two non-contiguous ones are set. No transmission is performed inside the time period (ie, during the NAV time), and it is not possible to transmit even if the channel is idle.
  • FIG. 3 is a schematic diagram 2 of the first embodiment of the information transmission method according to the present invention.
  • an RTS frame is sent, and a Duration field is carried in the MAC header of the RTS frame.
  • the field is used to set the NAV.
  • the RTS frame is used to indicate that the receiving station cannot initiate data transmission during the time period.
  • the target station sets the duration indicated by the Duration field to the NAV value, and ensures that no transmission is performed within the set time period (ie, the NAV time).
  • the setting of the next reserved time may be performed within the reserved time, thereby continuously reserving more time periods.
  • FIG. 4 is a schematic diagram 3 of Embodiment 1 of the information transmission method of the present invention.
  • the first reserved frame is used to indicate that the receiving station is at least two discontinuous. The data transmission cannot be initiated actively during the time period.
  • the second reserved frame is sent during the time period indicated by the first reserved frame to indicate that the receiving station cannot initiate data transmission within a period of time.
  • an RTS frame is first sent, and two Duration fields are carried in the MAC header of the RTS frame, and the field is used to set the NAV.
  • the frame indicates that the receiving station cannot initiate data transmission actively for at least two non-contiguous time periods, that is, after the non-target station receives the frame, the duration indicated by the duration fields is set to a NAV value, and the location is guaranteed.
  • No transmission is performed within the time period (ie, the NAV time); then, another RTS frame is sent in the second time of the reservation, and a Duration field is carried in the MAC header of the RTS frame and the Duration is
  • the field includes a time period information, which is used to set the NAV, that is, the frame indicates that the receiving station cannot initiate data transmission actively during the time period, thereby implementing that the receiving station cannot initiate the initiative for at least two non-contiguous time periods. Data transmission, successfully reserved for at least two non-contiguous time periods.
  • the purpose of reserving the reserved frame that can be used to reserve at least two non-contiguous time periods after the success of one channel competition is to realize one time after one channel competition in some scenarios in which data is not continuously transmitted. At least two non-contiguous time periods can be reserved, thereby reducing the competition overhead.
  • the discontinuous transmission of the data may occur in many scenarios.
  • the two technical scenarios of the periodic service and the uplink and downlink communication are taken as an example to further explain the foregoing technical solution.
  • the method further includes:
  • the sending station determines the length of the at least two non-contiguous time segments according to a period of the service data to be sent and an amount of data sent in each period.
  • the sending station determines the length of the time period that needs to be reserved in each period according to the period of the service data to be sent and the amount of data sent in each period, so as to determine the next time when the reserved frame is sent.
  • the reserved time period information is written into the reserved frame, so that multiple time periods are reserved.
  • the transmitting station sends a channel reserved frame after the contention channel succeeds, and the channel reserved frame may adopt different frame formats as described above, for example, "cycle length + number of cycles" + start time + length of reserved time in each cycle.”
  • the communication time is divided into uplink and downlink phases in order to reduce cross interference between uplink and downlink between different base station subsystems (BSSs).
  • BSSs base station subsystems
  • the uplink and downlink time periods can be reserved at the same time.
  • an access point AP
  • a part or all of the time of the uplink and the downlink is reserved, that is, the at least two non-contiguous time periods in the step 102 are used for transmitting uplink data, or both are used for transmitting downlink data, or partially for transmitting uplink data. Partially used to transmit downstream data.
  • the communication time is divided into the uplink and downlink phases, it can be regarded as having a fixed period, and therefore, it can be regarded as a special case in the periodic service scenario. According to the actual situation, it is judged that only the transmission uplink data needs to be reserved, or only the transmission downlink data needs to be reserved, or part of the transmission uplink data and the partial transmission downlink data need to be reserved, so that the channel reservation frame includes the corresponding reserved data. information.
  • FIG. 5 is a schematic diagram 4 of the first embodiment of the information transmission method according to the present invention.
  • the time interval in which only two uplink and downlink discontinuities are reserved is taken as an example.
  • the RTS frame is sent after the backoff count is completed.
  • the MAC header of the RTS frame carries two Duration fields. This field is used to set the NAV.
  • the duration indicated by the Duration field is set to the NAV value, and it is guaranteed that no transmission will be made within the two non-contiguous time periods (ie, the NAV time), even if the channel is idle.
  • FIG. 6 is a schematic diagram 5 of Embodiment 1 of the information transmission method of the present invention, as shown in FIG.
  • a continuous time period is used.
  • an RTS frame is sent first, and a Duration field is carried in the MAC header of the RTS frame, and the field is used to set the NAV, that is, the channel.
  • the reserved frame is used to reserve a time period in the uplink communication, that is, an uplink period (UL period), so that the non-target station receives the channel reservation frame, and sets the duration indicated by the duration field to NAV value, and ensure that no transmission is performed within the set time period (that is, the NAV time); then, in the reserved time, the downlink communication reservation time is set according to the above method, that is, the downlink segment (Downlink period, referred to as DL period).
  • the foregoing technical solutions of the present embodiment are further explained by taking the typical scenarios of the periodic service and the uplink and downlink communication as an example. For other discontinuous transmission scenarios, the foregoing method may be used to implement a multi-segment reservation after a competition. Technology, no longer repeat here.
  • Step 103 The sending station sends data in the at least two non-contiguous time periods.
  • the sending station sends an indication message after the contention channel succeeds, and the indication message is used to indicate that the receiving station cannot initiate data transmission actively for at least two non-contiguous time periods, that is, setting a NAV to the non-target station,
  • the NAV-enabled station is kept silent during the NAV period, thereby ensuring that other stations do not interfere with the data transmission of the transmitting station during at least two non-contiguous periods of the reservation.
  • the method further includes: the sending station receiving response information of the target station reply, where the response information is used to indicate the receiving station Data transmission cannot be initiated actively during the at least two non-contiguous periods of time.
  • the sending station receives the response information that is returned after the target station correctly receives the channel reserved frame sent by the sending station
  • the response information may be a CTS frame corresponding to the RTS frame, a response frame, such as an ACK frame, corresponding to the data frame, where the MAC header of the response frame also carries a Duration field, and the Duration field and the Duration field for setting the NAV carried in the MAC header of the reserved frame sent by the sending station according to the
  • the channel reservation frame format may be the same or different but used to reserve the same time period, and the response frame may be used to indicate the receiving station (the station receiving the response frame) within the at least two non-contiguous time periods
  • the data transmission cannot be initiated actively, that is, the NAV is set for the receiving station of the response frame, so that all the stations except the sending station and the target station are set with the NAV, and the transmission is guaranteed within the reserved time period.
  • the site and the target site can communicate without interference.
  • the receiving station of the response frame may overlap with the receiving station of the reserved frame, but even if there is a repetition, the application can ensure that all stations except the sending station and the target station are set with NAV. Therefore, the embodiment is not limited herein.
  • the sending station sends the indication information indicating that the receiving station cannot initiate data transmission actively for at least two non-contiguous time periods, and sends data in the at least two non-contiguous time periods, thereby implementing
  • channel reservation can be flexibly reserved for multiple periods of discontinuous time periods through one channel competition, which saves competition overhead and saves channel resources.
  • FIG. 7 is a schematic flowchart of Embodiment 2 of a method for sending information according to the present invention. As shown in FIG. 7, the method in this embodiment may include:
  • Step 701 Send a station to contend for a channel.
  • Step 702 The sending station sends a channel reservation frame after the contention channel succeeds, where the channel reserved frame is used to reserve at least two non-contiguous time segments, so that the non-target of the channel reserved frame is received.
  • the station is unable to transmit data for the at least two non-contiguous time periods.
  • the sending station sends a channel reservation frame after the contention channel succeeds, and the channel reservation frame is used to reserve at least two non-contiguous time periods; or, the sending station is separated after the contention channel succeeds. Transmitting at least two channel reserved frames, wherein at least one channel reserved frame is used to reserve a time period or to reserve at least two non-contiguous time segments at a time, wherein at least one channel reserved frame is in front
  • a channel reserved frame is sent within a time period reserved and used to reserve a time period or to reserve at least two non-contiguous time periods at a time, and the reserved time periods are non-contiguous.
  • the channel reserved frame is sent, and the reserved frame of the channel may be an RTS frame, a CTS-to-self frame, a data frame, etc., and is carried in the MAC header of the reserved frame of the channel.
  • Set the NAV field such as the Duration field.
  • the channel reservation frame may be one or more.
  • the Duration field carried in the MAC header of the channel reservation frame may be one or more, where one In the Duration field, the duration field corresponds to a plurality of different starting moments.
  • the Duration field carried in the MAC header of the channel reserved frame may be one or more.
  • the channel reserved frame is used to reserve at least two non-contiguous time segments, so that the non-target station (receiving station other than the target station of the channel reserved frame) receives the channel reserved frame
  • the duration indicated by the Duration fields is set to a NAV value and is guaranteed to be internal to the at least two non-contiguous time periods (ie, within the NAV time) No transmission is made, even if the channel is idle.
  • the NAV period is called the Transmission opportunity (TXOP).
  • the site that successfully sets the NAV for other sites is called the Transmission opportunity holder (TXOP holder).
  • the information of the reserved time period can be obtained according to the information of the actual situation.
  • the periodic service it can be determined according to the information such as the length of the reserved time in each period, and the uplink and downlink services can be classified according to the known in the uplink and downlink services.
  • the method and the information such as the length of the reserved time required in the uplink and downlink time periods are determined, and some information can be determined according to known statistical summaries, and the information such as the reserved time period will be determined.
  • the transmitting station sends a channel reservation frame after the contention channel succeeds
  • the channel reserved frame can adopt different frame formats, for example, "start time 1 + duration 1 + start time 2+ duration 2+ ... + start time n + duration n", or "start time 1 + end time 1 + start time 2+ end time 2+ ... + start time n + end time n", etc., the n It can be determined according to the actual situation, and the time information is obtained according to the actual application. Further, if the start time is omitted in the channel reserved frame format, the start time may be default, for example, starting from the end of the current frame.
  • the method for the channel reservation frame to be reserved for at least two non-contiguous time periods after the station is successfully contending for the channel may include two types of methods: simultaneous multi-segment reservation and step-by-step multi-segment reservation.
  • the multi-segment reservation technology can simultaneously reserve a plurality of non-contiguous time segments by transmitting a channel reservation frame for reserving at least two non-contiguous time segments after the contention channel succeeds;
  • the reservation technology may send at least two channel reserved frames at intervals after the contention channel succeeds by the sending station, where at least one channel reserved frame is used to reserve one time period or to reserve at least two non-contiguous time periods at a time. At least one channel reserved frame is sent during a time period reserved by the previous channel reserved frame and used to reserve a time period or reserve at least two non-contiguous time periods at a time, reserved Each time period is non-continuous.
  • an RTS frame is sent, and at least two Duration fields or a Duration are carried in the MAC header of the RTS frame.
  • the field corresponds to a plurality of different starting moments, and the field is used to set the NAV, that is, the channel reserved frame is used to reserve at least two non-contiguous time periods, so that the non-target station receives the channel reserved frame.
  • set the duration indicated by the Duration fields to the NAV value, and ensure that the at least two non-contiguous time periods (ie, the NAV time) are not entered. Any transmission can be performed even if the channel is idle, specifically similar to Figure 2 above, see Figure 2 above.
  • the sending station sends at least two channel reserved frames at intervals after the contention channel succeeds, and includes five implementation manners:
  • the reserved frame is used to reserve a time period, wherein the next channel reserved frame is sent within a time period reserved by the previous channel reserved frame, and the reserved time periods are discontinuous;
  • at least one channel reserved frame is used for reserving a time period, wherein at least one channel reserved frame is sent during a time period reserved by a previous channel reserved frame and used to reserve a time Segments, and the reserved time periods are non-contiguous;
  • the third implementable mode wherein at least one channel reserved frame is used to reserve a time period, wherein at least one channel reserved frame is in the previous channel pre-
  • the time period reserved for the frame reservation is used to reserve at least two non-contiguous time periods at a time, and the reserved time periods are discontinuous; at least one of the fourth achievable modes
  • the channel reserved frame is used to reserve at least two non-con
  • the sending station contends the channel successfully, that is, after the backoff counting ends, an RTS frame is first sent, and the MAC header of the RTS frame is sent.
  • There is a Duration field which is used to set the NAV, that is, the channel reserved frame is used to reserve a time period, so that the time indicated by the Duration field is received after the non-target station receives the channel reserved frame.
  • the setting of the next reserved time may be performed within the reserved time, thereby continuously reserving more time segments, which is similar to the above FIG. 3, see FIG. 3 above.
  • a fourth implementation manner of the second step-by-step multi-segment reservation technology where at least one channel reserved frame is used to reserve at least two non-contiguous time periods at a time, wherein at least one channel reservation is reserved.
  • the frame is sent during the time period reserved by the previous channel reserved frame and used to reserve a time period, and other channel reserved frames can be used to reserve one time period or at least two non-continuous time
  • the present invention is not particularly limited herein.
  • the first channel reserved frame is used to reserve two non-contiguous time segments at a time
  • the second channel reserved frame is sent within a time period reserved by the first channel reserved frame. For example, when a station is reserved for a time period, after the station contending channel is successfully sent, that is, after the backoff count is finished, an RTS frame is first sent, and two Duration fields are carried in the MAC header of the RTS frame, and the field is used for setting.
  • NAV that is, the channel reserved frame is used to reserve two non-contiguous time segments, so that after the non-target station receives the channel reserved frame, the duration indicated by the duration fields is set to a NAV value, and the No transmission is performed within the set time period (ie, the NAV time); then, in the second time of the reservation, the next reservation time is set according to the similar method described above, specifically similar to FIG. 4 above, please See Figure 4 above.
  • the channel reserved frame that can be used to reserve at least two non-contiguous time segments after being successfully used for one channel competition is used to achieve a channel competition in a scenario in which some data is discontinuously transmitted. At least two non-contiguous time periods can be reserved at a time, thereby reducing the competition overhead.
  • the discontinuous transmission of the data may occur in many scenarios.
  • the method further includes:
  • the sending station determines the length of the time period to be reserved in each period according to the period of the service data to be sent and the amount of data sent in each period, where the at least two non-contiguous time periods correspond to the periods Non-continuous time period.
  • the sending station determines the length of the time period that needs to be reserved in each period according to the period of the service data to be sent and the amount of data sent in each period, so that the next step is to send the channel reserved frame in the next step.
  • the determined reserved time period information is written into the channel reserved frame, thereby realizing the reserved multiple time periods.
  • the transmitting station sends a channel reserved frame after the contention channel succeeds, and the channel reserved frame may adopt different frame formats as described above, for example, "cycle length + number of cycles" + start time + length of reserved time in each cycle.”
  • the communication time is divided into uplink and downlink phases in order to reduce cross interference between uplink and downlink between different base station subsystems (BSSs).
  • BSSs base station subsystems
  • the uplink and downlink time periods can be reserved at the same time.
  • an access point AP
  • a part or all of the time of the uplink and the downlink is reserved, that is, the at least two non-contiguous time periods in the step 702 are used for transmitting uplink data, or both are used for transmitting downlink data, or partially for transmitting uplink data. Partially used to transmit downstream data.
  • the communication time is divided into the uplink and downlink phases, it can be regarded as having a fixed period, and therefore, it can be regarded as a special case in the periodic service scenario. According to the actual situation, it is judged that only the transmission uplink data needs to be reserved, or only the transmission downlink data needs to be reserved, or part of the transmission uplink data and the partial transmission downlink data need to be reserved, so that the channel reservation frame includes the corresponding reserved data. information.
  • this embodiment takes the time period in which only two uplink and downlink discontinuities are reserved as an example.
  • an RTS frame is sent, at the RTS.
  • the MAC header of the frame carries two Duration fields, which are used to set the NAV, that is, the reserved frame of the channel is used to reserve two non-contiguous time segments in the uplink and downlink communication, that is, the downlink segment and the uplink segment,
  • the non-target station receives the channel reserved frame, set the duration indicated by the duration fields to the NAV value, and ensure that no internal (ie, NAV time) is performed during the two non-contiguous time periods that are set.
  • Sending, even if the channel is idle, can not be sent, specifically similar to Figure 5 above, see Figure 5 above.
  • a time period in which only two segments of uplink and downlink discontinuities are reserved is taken as an example.
  • the backoff count ends.
  • an RTS frame is sent first, and a Duration field is carried in the MAC header of the RTS frame.
  • the field is used to set the NAV, that is, the channel reserved frame is used to reserve a time period in the uplink communication, that is, an uplink segment.
  • the non-target station After the non-target station receives the channel reserved frame, set the duration indicated by the Duration field to the NAV value, and ensure that no transmission is performed within the set time period (ie, the NAV time);
  • the reserved time is carried out according to the above method.
  • the setting of the line communication reservation time is the downlink section, which is similar to the above-mentioned FIG. 6, see FIG. 6 above.
  • the foregoing technical solutions of the present embodiment are further explained by taking the typical scenarios of the periodic service and the uplink and downlink communication as an example.
  • the foregoing method may be used to implement a multi-segment reservation after a competition. Technology, no longer repeat here.
  • Step 703 The sending station receives a response frame of the channel reserved frame sent by the target station, where the response frame is used to reserve the at least two non-contiguous time segments, so that the response frame is received.
  • the non-target station cannot transmit data during the at least two non-contiguous time periods.
  • the sending station receives a response frame that is replied after the target station correctly receives the channel reserved frame sent by the sending station
  • the response frame may be a CTS frame corresponding to the RTS frame and an ACK corresponding to the data frame.
  • a frame structure such as a frame
  • the MAC header of the response frame also carries a Duration field
  • the Duration field carried in the MAC header of the channel reservation frame sent by the sending station for setting the NAV according to the channel reserved frame format may be The same, or different, but reserved for the same time period
  • the response frame may reserve the at least two non-contiguous time periods, so that the non-target station receiving the response frame has at least two discontinuities set The time period cannot send data, that is, NAV is set for the non-target site around the target site.
  • Step 704 The sending station communicates with the target station in the reservation for at least two non-contiguous time periods.
  • the sending station sets the NAV to the non-target station by sending the channel reserved frame, so that the station where the NAV is set remains silent during the NAV period, thereby ensuring at least two non-contiguous times in the reservation.
  • the transmitting station and the target station in the segment can communicate without interference.
  • NAV frames are updated with NAV; if the newly received NAV is shorter than the NAV set by itself, no update is required.
  • the sending station sends a channel reserved frame for reserving at least two non-contiguous time segments, so that a channel competition can be performed in some scenarios in which data is not continuously transmitted.
  • the channel reservation of multiple discrete time segments is reserved lively, which saves competition overhead, saves channel resources, and facilitates the transmitting station to communicate with the target site in a plurality of reserved discrete time periods.
  • FIG. 8 is a schematic flowchart of Embodiment 3 of the information sending method of the present invention. As shown in FIG. 8, the method may include:
  • Step 801 The target station receives the indication information sent by the sending station, where the indication information is used to indicate that the target station cannot initiate data transmission actively for at least two non-contiguous time periods.
  • the target station receives an indication message that is sent by the sending station to indicate that the target station cannot initiate data transmission actively for at least two non-contiguous time periods
  • the indication message may be an RTS frame, a CTS- Reserved frames such as to-self frame, data frame, and so on.
  • the indication information may be sent by using one frame, where the frame includes information for indicating the at least two discontinuous time segments; or, the indication information is sent by using at least two frames, where And the at least two frames respectively include information indicating at least one of the at least two non-contiguous time segments, and the next one of the at least two frames is indicated by the previous frame Sent during the time period.
  • Step 802 The target station receives data sent by the sending station in the at least two non-contiguous time periods.
  • the method before the receiving, by the target station, the data sent by the sending station in the at least two non-contiguous time periods, the method further includes:
  • the target station replies to the sending station with response information, where the response information is used to indicate that the receiving station cannot initiate data transmission actively within the at least two non-contiguous time periods.
  • the sending, by the target station, the response information to the sending station includes: if the indication information is sent by using one frame, the target station sends a response frame to the sending station; or
  • the target The station transmits at least two response frames correspondingly to the sending station.
  • the response information needs to be returned, and the response information may correspond to a CTS frame corresponding to the RTS frame and an ACK frame corresponding to the data frame.
  • the frame is also carried in the MAC header of the response frame for setting The Duration field of NAV.
  • the response frame may correspond to the channel reservation frame, and may be one or more.
  • the target station sends a response frame to the sending station, where The duration field carried in the MAC header of the response frame may be multiple, that is, the response frame includes information indicating the at least two non-contiguous time segments, so that the receiving station that receives the response frame is set.
  • the data cannot be actively sent in at least two non-contiguous time periods; if the indication information is sent through at least two frames, the target station correspondingly sends at least two response frames to the sending station, the response frame
  • the Duration field carried in the MAC header may be one or more, so that the receiving station that receives the response frame cannot actively send data for at least two non-contiguous time periods, and the receiving station is in addition to the sending station.
  • the duration field information may be the same as the Duration field information in the channel reservation frame sent by the sending station, or different but used to reserve the same time period.
  • the reserved time period information included in the response frame sent by the target station to the sending station is consistent with the reserved time period information in the reserved frame sent by the target station and the sending station, where the reservation is reserved.
  • the frame format of the response frame of the frame is consistent with the format of the reserved frame, for example, "start time 1 + duration 1 + start time 2+ duration 2+... + start time n + duration n", or "start” Time 1 + end time 1 + start time 2+ end time 2+ ... + start time n + end time n" and other formats, the n can be determined according to the actual situation, wherein the time information is based on the actual application obtain. Further, if the start time is omitted from the reserved frame format, it means that the start time is the default, that is, from the end of the current frame.
  • the method in which the target station receives the reserved frame sent by the sending station and sends the response frame to the sending station may correspondingly include two methods: simultaneous multi-segment reservation and step-by-step multi-segment reservation.
  • the multi-segment reservation technology may simultaneously send a response frame to the sending station to indicate that the receiving station cannot initiate data transmission actively for at least two non-contiguous time periods through the target station to implement simultaneous multi-segment reservation;
  • the reservation technology may send, by the target station, two response frames for indicating that the receiving station cannot initiate data transmission actively in at least one of the at least two non-contiguous time periods, where the at least two The latter response frame in the response frames is sent during the time period indicated by the previous response frame.
  • FIG. 9 is a schematic diagram 1 of Embodiment 3 of the method for transmitting information according to the present invention.
  • a target station receives a reserved frame sent by a sending station.
  • the response frame of the reserved frame is sent to the sending station, where the response frame is a CTS frame corresponding to the RTS frame, and at least two Duration fields are also carried in the MAC header of the CTS frame, where the field is used to set the NAV.
  • the response frame is used to indicate that the station that received the response frame cannot actively initiate data transmission during the at least two non-contiguous time periods, that is, after receiving the response frame, the station that receives the response frame receives the response frame.
  • the duration indicated by the Duration field is set to the NAV value, and it is guaranteed that data cannot be transmitted for at least two non-contiguous time periods.
  • the Duration field information may be the same as the Duration field information in the reserved frame received by the sending station, or different but used to reserve the same time period.
  • FIG. 10 is a schematic diagram 2 of the third embodiment of the information transmission method of the present invention.
  • the response frame of the reserved frame is sent to the sending station, where the response frame is a CTS frame corresponding to the RTS frame, and a Duration field is also carried in the MAC header of the CTS frame, where the field is used to set the NAV, that is, the The response frame is used to reserve a time period, so that the station receiving the response frame sets the duration indicated by the Duration field to a NAV value, and ensures that data cannot be transmitted within the set time period;
  • the next reservation time is set according to the above method, and so on, and more time periods are reserved continuously.
  • the Duration field information may be the same as the Duration field information in the channel reservation frame received by the transmitting station, or different but used to reserve the same time period.
  • the technical solution described in this embodiment may be applicable to some scenarios in which data is not continuously transmitted, that is, it may be necessary to reserve a plurality of periods of discontinuous time periods.
  • the data discontinuous transmission may occur in many scenarios.
  • the technical solutions of the present embodiment are further explained by taking the typical scenarios of the periodic service and the uplink and downlink communication as an example.
  • the reserved time period information in the response frame of the target station sending the reserved frame to the sending station is consistent with the reserved time period information in the reserved frame sent by the target station receiving the sending station, the reserved frame
  • the frame format of the response frame is the same as the format of the reserved frame, and the present invention will not be described herein.
  • part or all of the uplink time or the downlink time or all the time of the uplink and downlink may be reserved, that is, at least two discontinuities in step 802.
  • the time period is used to transmit uplink data, or both are used to transmit downlink data, or partially used to transmit uplink data and partially used to transmit downlink data.
  • NAV frames are updated with NAV; if the newly received NAV is shorter than the NAV set by itself, it will be ignored.
  • the target station sends, to the sending station, indication information indicating that the target station cannot initiate data transmission actively for at least two non-contiguous time periods, and in the at least two non-contiguous time periods. Receiving data sent by the sending station, thereby flexibly reserving channel reservation of multiple consecutive time segments in a scenario in which some data is discontinuously transmitted, thereby saving channel resources.
  • FIG. 11 is a schematic flowchart of Embodiment 4 of an information sending method according to the present invention. As shown in FIG. 11, the method in this implementation may include:
  • Step 1101 The target station receives a channel reservation frame sent by the sending station.
  • the method includes: receiving, by the target station, a channel reservation frame sent by the sending station; or, the target station receiving at least two channel reserved frames sent by the sending station interval.
  • the target station receives a channel reservation frame sent by the transmitting station for reserving at least two non-contiguous time periods
  • the channel reservation frame may be a frame structure such as an RTS frame, a CTS-to-self frame, or a data frame.
  • Step 1102 The target station sends a response frame of the channel reservation frame to the sending station, where the response frame is used to reserve at least two non-contiguous time segments, so that the non-response frame is received.
  • the target site is unable to transmit data for the at least two non-contiguous time periods.
  • the method includes: sending, by the target station, a response frame of the one channel reserved frame to the sending station, the response frame For storing at least two non-contiguous time periods at a time; or, when the target station receives at least two channel reservation frames sent by the sending station interval, correspondingly, the method includes: sending, by the target station, the Sending, by the station interval, a response frame of the at least two channel reserved frames, where at least one response frame is used to reserve a time period or to reserve at least two non-contiguous time segments at a time, wherein at least one response frame It is sent in the time period reserved by the previous response frame and is used to reserve a time period or to reserve at least two non-contiguous time periods at one time, and the reserved time periods are non-contiguous.
  • the response frame after the target station correctly receives the channel reservation frame sent by the sending station, the response frame needs to be returned, and the response frame may be a CTS frame corresponding to the RTS frame, an ACK frame corresponding to the data frame, and the like. Structure, which is also carried in the MAC header of the response frame for setting the NAV Duration field.
  • the response frame may correspond to the channel reservation frame, and may be one or more.
  • the Duration field carried in the MAC header of the response frame may be multiple;
  • the Duration field carried in the MAC header of the response frame may be one or more, so that the non-target station of the target station that receives the response frame is in at least two non-contiguous time periods. Unable to send data.
  • the Duration field information may be the same as the Duration field information in the channel reservation frame received by the transmitting station, or different but used to reserve the same time period.
  • the reserved time period information in the response frame of the target station transmitting the channel reserved frame to the transmitting station is consistent with the reserved time period information in the channel reserved frame sent by the target station receiving the transmitting station, and the response frame of the reserved frame of the channel is
  • the frame format is consistent with the format of the reserved frame of the channel, for example "start time 1 + duration 1 + start time 2+ duration 2+... + start time n + duration n", or "start time 1 + termination” Time 1 + start time 2+ end time 2+ ... + start time n + end time n” and other formats, the n can be determined according to a specific actual situation, wherein the time information is obtained according to the actual application. Further, if the start time is omitted in the channel reserved frame format, it means that the start time is default, that is, from the end of the current frame.
  • the method that the target station receives the channel reservation frame sent by the sending station and sends the response frame to the sending station to reserve at least two non-contiguous time periods may include two categories of simultaneous multi-segment reservation and step-by-step multi-segment reservation. method.
  • the multi-segment reservation technology may simultaneously send a response frame of the channel reserved frame for reserving at least two non-contiguous time segments to the sending station through the target station to implement simultaneous multi-segment reservation;
  • the technology may send, by the target station, a response frame of at least two channel reserved frames to the sending station interval, where at least one response frame is used to reserve one time period or at least two non-contiguous time periods are reserved at a time, where At least one response frame is sent within a time period reserved by the previous response frame and used to reserve a time period or to reserve at least two non-contiguous time periods at a time, and the reserved time periods are discontinuous. of.
  • the target station after receiving the channel reservation frame sent by the sending station, the target station sends a response frame of the channel reserved frame to the sending station, where the response frame is corresponding to the RTS frame.
  • the CTS frame also carries at least two Duration fields in the MAC header of the CTS frame, where the field is used to set the NAV, that is, the response frame is used to reserve at least two non-contiguous time segments, so that the After receiving the response frame, the non-target station of the target station of the response frame sets the duration indicated by the Duration fields to a NAV value, and ensures that at least two non-contiguous ones are set. Data cannot be sent during the time period.
  • the Duration field information and the Duration field information in the channel reservation frame received by the sending station may be the same according to the channel reserved frame format, or different but used to reserve the same time period, specifically similar to FIG. 9 above. See Figure 9 above.
  • the response frame in which the target station sends at least two channel reserved frames to the sending station interval in the embodiment includes five implementation manners:
  • the response frames are used to reserve a time period, wherein the latter response frame is sent within a time period reserved by the previous response frame, and the reserved time periods are non-contiguous;
  • At least one response frame is used to reserve a time period, wherein at least one response frame is sent during a time period reserved by the previous response frame and used to reserve a time period, and each time period reserved Is non-contiguous;
  • the third implementable mode wherein at least one response frame is used to reserve a time period, wherein at least one response frame is sent within a time period reserved by the previous response frame and used for one time Retaining at least two non-contiguous time periods, and each reserved time period is non-contiguous;
  • the fourth implementable mode wherein at least one response frame is used to reserve at least two non-one at a time a continuous time period
  • the target station after receiving the channel reservation frame sent by the sending station, the target station first sends a response of the channel reserved frame to the sending station.
  • the response frame is a CTS frame corresponding to the RTS frame
  • a Duration field is also carried in the MAC header of the CTS frame, where the field is used to set the NAV, that is, the response frame is used to reserve a time period, so that
  • the non-target station of the target station receiving the response frame sets the duration indicated by the Duration field to a NAV value, and ensures that data cannot be transmitted within the set time period; then, in the pre- During the retention time, the next reservation time is set according to the above method, and so on, and more time periods are reserved continuously.
  • the duration field information in the channel reservation frame and the channel reservation frame received by the sending station may be the same according to the channel reserved frame format, or different but used to reserve the same time period, specifically similar to FIG
  • the technical solution described in this implementation may be applicable to some scenarios in which data is not continuously transmitted, that is, It is necessary to reserve multiple periods of discontinuous time.
  • the discontinuous transmission of data may occur in many scenarios.
  • the above technical solutions are further explained by taking two typical scenarios of periodic service and uplink and downlink communication as an example.
  • the reserved time period information in the response frame of the channel reservation frame sent by the target station to the sending station is consistent with the reserved time period information in the channel reserved frame sent by the target station receiving the transmitting station, the channel
  • the frame format of the response frame of the reserved frame is consistent with the format of the reserved frame of the channel, and the present invention will not be described herein.
  • part or all of the uplink time or the downlink time or all the time of the uplink and downlink may be reserved, that is, at least two discontinuities in step 1102.
  • the time period is used to transmit uplink data, or both are used to transmit downlink data, or partially used to transmit uplink data and partially used to transmit downlink data.
  • Step 1103 The target station communicates with the sending station during the reservation for at least two non-contiguous time periods.
  • the channel reservation frame sent by the transmitting station and the response frame replied to the transmitting station to the channel reservation frame are received by the target station, and the NAV is set at all sites around the transmitting station and the target, and the NAV-enabled station is in the NAV.
  • the silent state is maintained for a period of time, thereby ensuring that the target station and the transmitting station can communicate undisturbed during at least two non-contiguous periods of the reservation.
  • a site After a site is set to NAV, if it receives a frame carrying a longer NAV before the end of the current NAN, the NAV is updated; if the newly received NAV is shorter than the NAV set by itself, it is ignored.
  • a response frame for reserving at least two non-contiguous time segments is sent to the sending station by using the target station, so that the channel pre-segment of the multi-segment discontinuous time period is flexibly reserved in the scenario in which some data is discontinuously transmitted.
  • the channel resources are saved, and the target station is allowed to communicate with the transmitting station within a plurality of reserved discontinuous time periods.
  • FIG. 12 is a schematic flowchart of Embodiment 5 of the method for sending information according to the present invention. As shown in FIG. 12, the method in this embodiment may include:
  • Step 1201 The sending station sends indication information, where the indication information is used to indicate a reserved time period.
  • the reserved time period is a continuous time period or at least two non-continuous times Intersection.
  • the sending station sends the indication information after the contention channel succeeds
  • the indication information may be a reserved frame such as RTS, so that the receiving station that receives the reserved frame indicates the Duration field in the reserved frame.
  • the duration is set to the NAV value, and the station to which the NAV is set remains silent during the NAV period, thereby reserving the period of time during which data is sent to the target station.
  • the Duration field in the channel reserved frame includes a continuous period of time information, so as to reserve a continuous period of time; or, the Duration field in the channel reserved frame includes at least two non-contiguous time period information. Thus, to reserve at least two non-contiguous time periods.
  • Step 1202 The sending station sends data in the reserved time period.
  • the sending station may send data to the target station in the reserved time period, and the reserved time period may be a continuous period of time or at least two reserved for the sending station after a successful channel competition. Non-continuous time period.
  • Step 1203 The sending station sends the release information in the reserved time period, where the release information is used to instruct the receiving station to release at least a part of the remaining time period of the time period.
  • the site that successfully performs NAV setting for other stations is called a TXOP holder, which has the transmission right within the NAV period.
  • the TXOP holder when the data is transmitted after part of the time in the period of successful reservation, the TXOP holder has no more data to send, but in a certain part or parts of the second half of the reserved time.
  • the TXOP holder may send channel release information during the time period, and the release information may be a released frame such as a modified CF-End frame, the release frame.
  • the time period information of the release can be obtained according to the information of the actual situation. For example, for the periodic service, it can be determined according to information such as the length of time and the length of time required to be released. For the uplink and downlink services, information such as which time periods in the uplink and downlink services need to be released may be released.
  • the reserved time period may be a continuous time period or at least two non-contiguous time periods.
  • the TXOP holder may send a channel release frame after the data is sent to indicate the remaining time period in the time period during which the station receiving the channel release frame releases the reservation, thereby allowing other stations to perform channel competition.
  • the format of the release frame sent by the sending station may be various, for example, "release start time 1 + release time length 1 + release start time 2+ release time length 2+... + release start Time n + release time length n” or "release start time 1 + release termination time 1 + release start time 2+ release termination time 2+ ... + release start time n + release termination time n", etc. n can be determined according to the actual situation, and the time information is obtained according to the actual application. Further, if the start time is omitted in the release frame format, it means that the start time is default, that is, from the end of the current frame.
  • FIG. 13 is a first schematic diagram of Embodiment 5 of the method for transmitting information according to the present invention.
  • the release station releases two time periods in the remaining time period of the reserved continuous period of time as an example, and the sending station is in the example.
  • the RTS reserved frame is reserved for a continuous period of time to send data.
  • the sending station has no more data to send, but in the second half of the reserved time.
  • the station may send a CF-End frame in a continuous period of time of the reservation, and the channel release frame carries a continuous period of time for releasing the reservation.
  • Time period information of the remaining two parts of the remaining time period that is, the channel release frame is used to indicate that the station receiving the release frame releases the remaining two parts of the remaining time period of the reserved time period Reserving resources releases segment 1 and release segment 2, allowing other sites to compete for channels.
  • FIG. 14 is a second schematic diagram of Embodiment 5 of the method for transmitting information according to the present invention. As shown in FIG. 14, a portion of the second and third discontinuous time periods of the five discontinuous time periods reserved by the channel release frame release is shown in FIG. For example, when the sending station sends data in a non-contiguous first time period and a second time period after the end of the backoff count is sent, the sending station is in the middle part of the second time period.
  • the station may send a CF-End frame in the second time period of the reservation, where the channel release frame carries a second time period and a third time period for releasing the reservation.
  • the time period information of the NAV setting in the middle part that is, the channel release frame is used to release the The reserved resources of the reserved second time period and the middle part of the third time period release segment 1 and release segment 2, thereby allowing other stations to perform channel competition.
  • the above downlink communication is taken as an example. If the access point reserves the uplink and downlink time segments at one time, but the downlink data is small, the entire downlink time period does not need to be occupied. After the downlink data is sent, the channel release frame can be sent.
  • the channel release frame includes downlink period information that needs to be released, thereby releasing the remaining time of the downlink period for use by other access points/sites.
  • the sending station sends the release information indicating that the receiving station releases at least a part of the remaining time period of the time period, thereby implementing flexible release of the remaining channel reservation in some scenarios in which data is not continuously transmitted. Resources, saving channel resources and improving system utilization efficiency.
  • FIG. 15 is a schematic flowchart of Embodiment 6 of the information sending method of the present invention. As shown in FIG. 15, the method in this embodiment may include:
  • Step 1501 The sending station sends a channel reservation frame after the contention channel succeeds, to reserve a time period for sending data to the target station.
  • the sending station sends a channel reservation frame after the contention channel succeeds to reserve a continuous period of time; or, the sending station sends a channel reservation frame after the contention channel succeeds, to reserve at least Two non-contiguous time periods.
  • the sending station sends the channel reservation frame in the form of sending, so that the non-target station that receives the channel reserved frame sets the duration indicated by the Duration field in the channel reserved frame.
  • the NAV-set site remains silent for the NAV period, thereby reserving the period of time during which data is sent to the target site.
  • the Duration field in the channel reserved frame includes a continuous period of time information, so as to reserve a continuous period of time; or, the Duration field in the channel reserved frame includes at least two non-contiguous time period information. Thus, to reserve at least two non-contiguous time periods.
  • Step 1502 The sending station sends data in a reserved time period.
  • the method when the sending station sends a channel reservation frame after the contention channel is successful, to reserve a continuous period of time, the method includes: the continuous period reserved by the sending station after the contention channel succeeds. Transmitting data in a time period; or, when the transmitting station sends a channel reservation frame after the contention channel is successful, to reserve at least two non-contiguous time periods, correspondingly, the method includes: the sending station is in a contention channel Number of transmissions in the at least two non-contiguous time periods reserved after success According to.
  • the sending station sends data in a reserved time period
  • the reserved time period may be a continuous period of time or at least two non-contiguous times reserved after the channel successfully competes by the sending station. segment.
  • Step 1503 The sending station sends a channel release frame in a process of transmitting data in the time period, where the channel release frame is used to release at least a part of the time period in the remaining time period.
  • the transmitting station sends a channel reservation frame after the contention channel succeeds to reserve a continuous period of time, and correspondingly, the transmission station reserves the continuous period of time after the contention channel succeeds.
  • the method includes: sending, by the sending station, a channel release frame in a process of sending data in the reserved consecutive time period, where the channel release frame is used to release the reserved segment At least a portion of the time period of the remaining time period of the continuous time period; or, when the transmitting station succeeds in transmitting the channel reservation frame, to reserve at least two non-contiguous time periods, correspondingly,
  • the method includes: sending, by the sending station, a channel release frame in the process of sending data in the time period, The channel release frame is configured to release at least a portion of the remaining time periods of the reserved at least two non-contiguous time periods.
  • the site that successfully performs NAV setting for other stations is called a TXOP holder, which has the transmission right within the NAV period.
  • the TXOP holder has no more data to send, but in a certain part or parts of the second half of the reserved time.
  • the TXOP holder may send a channel release frame during the time period, and the channel release frame may be a modified CF-End frame, and the channel release frame carries The time period information of the NAV setting of the remaining part or portions of the remaining time period in the time period for ending the reservation, that is, the channel release frame is used to release the remaining part of the remaining time period in the reserved time period. Or some parts of the reserved resources, allowing other sites to compete for channels.
  • the time period information of the release can be obtained according to the information of the actual situation. For example, for the periodic service, it can be determined according to information such as the length of time and the length of time required to be released.
  • information such as which time periods in the uplink and downlink services need to be released may be released. Determine, for some information can be determined based on known statistical summaries to determine which reserved time periods need to be released, etc.
  • the TXOP holder After a period of time is successfully transmitted, the TXOP holder has already transmitted the data after a partial time of data transmission, but There is also a remaining reserved time period, and the reserved time period may be a continuous time period or at least two non-contiguous time periods.
  • the TXOP holder may send a channel release frame after the data is sent, for releasing the remaining time period of the reserved time period, thereby allowing other stations to perform channel contention.
  • the format of the channel release frame sent by the sending station may be various, for example, “release start time 1 + release time length 1 + release start time 2+ release time length 2+... + release” Start time n + release time length n” or "release start time 1 + release termination time 1 + release start time 2+ release termination time 2+ ... + release start time n + release termination time n” format, etc.
  • the description of n can be determined according to the actual situation, and the time information is obtained according to the actual application. Further, if the start time is omitted in the channel release frame format, it means that the start time is default, that is, from the end of the current frame.
  • the two parts of the remaining time period of the reserved time period are released by the channel release frame as an example, and the sending station sends a reserved portion of the RTS channel reserved frame after the backoff count ends. Sending data in consecutive time periods. After a part of the time, the sending station has no more data to send, but when there are data in the second half of the reserved period, the data needs to be received/sent.
  • the station may send a CF-End frame in a continuous period of time of the reservation, the channel release frame carrying a period of NAV setting of the remaining two parts of the remaining time period of the continuous time period for ending the reservation
  • the information that is, the channel release frame is used to release the reserved resources of the remaining two parts of the remaining time period of the reserved continuous period of time, that is, release segment 1 and release segment 2, thereby allowing other stations to perform channel competition, specifically Similar to Figure 13 above, please see Figure 13 above.
  • a part of the second and third non-continuous time periods of the five discontinuous time periods reserved by the channel release frame release is taken as an example, and the sending station sends the RTS after the backoff count ends. After transmitting the data in the non-contiguous first time period and the second time period reserved by the channel reserved frame, the transmitting station has no more data to be sent in the middle part of the second time period and the middle part of the third time period.
  • the station can be in the Sending a CF-End frame in the second period of time
  • the channel release frame carries time period information of the NAV setting for ending the second period of the reservation and the middle portion of the third period, that is, the channel release frame
  • the reserved resources for releasing the reserved second time period and the middle portion of the third time period are the release segment 1 and the release segment 2, thereby allowing other sites to perform channel competition, specifically Similar to Figure 14 above, see Figure 14 above.
  • the above downlink communication is taken as an example. If the access point reserves the uplink and downlink time segments at one time, but the downlink data is small, the entire downlink time period does not need to be occupied. After the downlink data is sent, the channel release frame can be sent.
  • the channel release frame includes downlink period information that needs to be released, thereby releasing the remaining time of the downlink period for use by other access points/sites.
  • the sending station sends a channel release frame for releasing at least a part of the remaining time period, thereby implementing flexible release of the remaining channel reserved resources in a scenario in which data is not continuously transmitted, thereby saving channel resources. , improve the efficiency of the system.
  • Figure 16 is a schematic flowchart of the seventh embodiment of the information sending method of the present invention. As shown in Figure 16, the method in this embodiment may include:
  • Step 1601 The receiving station receives the indication information sent by the sending station, where the indication information is used to indicate a reserved time period.
  • the reserved time period is a continuous time period or at least two non-contiguous time periods.
  • the receiving station receives the indication information sent by the sending station, where the receiving station is a receiving station other than the target station among all receiving stations that receive the indication information, and the indication information may be an RTS or the like.
  • the receiving station sets the duration indicated by the Duration field in the reserved frame to a NAV value, that is, maintains a silent state during the NAV period, so as to facilitate the sending station to the target site without interference during the time period. send data.
  • Step 1602 The receiving station receives the release information sent by the sending station in the reserved time period, where the release information is used to indicate that the receiving station releases the remaining time period of the time period. At least part of the time period.
  • the receiving station receives the release information sent by the sending station in the reserved time period
  • the release information may be a released frame such as a modified CF-End frame, where the channel release frame is carried to release the pre-
  • the time period information set by the NAN of a part or some part of the remaining time period in the remaining time period, that is, the release frame is used to indicate a part or part of the remaining time period in the time period during which the receiving station releases the reservation Several parts of reserved resources.
  • the reserved time period may be a continuous time period or at least two non-continuous time periods, and correspondingly, the release frames respectively carry a continuous time period for releasing the reservation or the reserved Time period information set by the NAN of a part or portions of the remaining time period in at least two non-continuous time periods. Further, the receiving station releases the reserved time period according to the time period information set by the NAN of the part or portions of the remaining time period in the release time period carried in the release frame. A reserved resource of a corresponding part or parts of the remaining time period, so that the receiving station can perform channel competition during the released time periods.
  • the reserved time period may be a reserved continuous time period or at least two non-continuous time periods reserved.
  • the receiving station receives the release information sent by the sending station to indicate that the receiving station releases at least a part of the remaining time period of the time period, in the reserved time period, It realizes flexible release of remaining reserved resources in some scenarios where data is not continuously transmitted, saves channel resources, and improves system utilization efficiency.
  • FIG. 17 is a schematic flowchart of Embodiment 8 of the information sending method of the present invention. As shown in FIG. 17, the method in this embodiment may include:
  • Step 1701 The receiving station receives, in the reserved time period, a channel release frame sent by the sending station, where the channel release frame is used to release at least a part of the time period in the remaining time period.
  • the receiving station receives a channel release frame sent by the sending station in a reserved period of time; or, the receiving station receives the sending station in at least two non-contiguous time periods reserved The transmitted channel releases the frame.
  • the receiving station receives the channel release frame sent by the sending station in the reserved time period
  • the channel release frame may be a modified CF-End frame, where the channel release frame is carried to end the reservation.
  • the time period information set by the NAN of a certain part or some parts of the remaining time period in the time period, that is, the channel release frame is used to release a part or parts of the remaining time period of the reserved time period.
  • the reserved time period may be a continuous time period or at least two non-continuous time periods, and correspondingly, the channel reserved frame respectively carries a continuous time period for ending the reservation or the pre-
  • Step 1702 The receiving station releases at least a part of the remaining time period according to the channel release frame.
  • the receiving station when the receiving station receives the channel release frame sent by the sending station in a reserved period of time, the receiving station includes: the receiving station releasing the reserved segment according to the channel release frame. At least a portion of the remaining time period of the continuous time period; or, when the receiving station receives the letter sent by the transmitting station within at least two non-contiguous time periods reserved When the frame is released, correspondingly, the receiving station releases at least a part of the remaining time periods of the reserved at least two non-contiguous time periods according to the channel release frame.
  • the receiving station releases the time period information set by the NAN of a part or portions of the remaining time period in the time period for ending the reservation according to the channel release frame, and releases the remaining time period in the reserved time period. Corresponding part or parts of the reserved resources, so that the receiving station can perform channel competition during the released time periods.
  • the reserved time period may be a reserved continuous time period or at least two non-continuous time periods reserved.
  • the receiving station releases the corresponding time period in the reserved time period according to the channel release frame sent by the sending station for releasing at least a part of the remaining time period of the reserved time period, thereby implementing the corresponding time period in the reserved time period.
  • the remaining reserved resources are flexibly released, channel resources are saved, and the utilization efficiency of the system is improved.
  • FIG. 18 is a schematic structural diagram of Embodiment 1 of a transmitting station according to the present invention.
  • the sending station 180 in this embodiment includes: a contention module 1801, an indication module 1802, and a sending module 1803.
  • the competition module 1801 is used to compete for a channel
  • the indication module 1802 is configured to send the indication information after the contention channel succeeds, where the indication information is used to indicate that the receiving station cannot initiate data transmission actively for at least two non-contiguous time periods; the sending module 1803 is configured to: Data is sent in two non-contiguous time periods.
  • the sending station 180 further includes:
  • the receiving module is configured to receive response information of the target site reply, where the response information is used to indicate that the receiving station cannot actively initiate data transmission during the at least two non-contiguous time periods.
  • the indication information is sent by using one frame, where the frame includes information for indicating the at least two discontinuous time segments; or
  • the indication information is sent by using at least two frames, where the at least two frames respectively include information indicating at least one of the at least two non-contiguous time periods, and the at least two frames The next frame in the frame is sent within the time period indicated by the previous frame.
  • the sending station 180 further includes:
  • the determining module is configured to determine the length of the at least two non-contiguous time segments according to a period of the data to be sent and an amount of data sent in each period.
  • the at least two non-contiguous time periods are used to transmit uplink data, or both are used to transmit downlink data, or partially used to transmit uplink data and partially used to transmit downlink data.
  • the sending station of this embodiment may be used in the technical solution of the first embodiment of the information sending method, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 19 is a schematic structural diagram of Embodiment 2 of a transmitting station according to the present invention.
  • the transmitting station 190 provided in this embodiment includes a processor 1901 and a memory 1902.
  • the transmitting station 190 can also include a transmitter 1903 and a receiver 1904.
  • the transmitter 1903 and the receiver 1904 can be connected to the processor 1901.
  • the transmitter 1903 is configured to transmit data or information
  • the receiver 1904 is configured to receive data or information
  • the memory 1901 is configured to store execution instructions.
  • the processor 1901 communicates with the memory 1902, and the processor 1901
  • the execution instruction in the memory is used to perform the operation in the first embodiment of the above information transmission method.
  • the sending station of this embodiment may be used to implement the technical solution of the first embodiment of the information sending method of the present invention.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 20 is a schematic structural diagram of Embodiment 3 of a transmitting station according to the present invention.
  • the sending station 200 in this embodiment includes: a contention module 2001, a sending module 2002, a receiving module 2003, and a communication module 2004.
  • the competition module 2001 is used for a contention channel
  • the sending module 2002 is configured to send a channel reservation frame after the contention channel succeeds, where the channel reservation frame is used to reserve at least two non-contiguous time periods, so that the non-target station that receives the channel reserved frame is The data cannot be transmitted during the at least two non-contiguous time periods;
  • the receiving module 2003 is configured to receive a response frame of the channel reservation frame sent by the target station, where the response frame is used to reserve the at least two non-contiguous time segments, so that the non-target of the response frame is received.
  • the station cannot send data during the at least two non-contiguous time periods;
  • the communication module 2004 is configured to communicate with the target site during the reservation for at least two non-contiguous time periods.
  • the sending module 2002 is specifically configured to send, after the contention channel succeeds, a channel reservation frame, where the channel reserved frame is used to reserve at least two non-contiguous time segments;
  • At least two channel reserved frames are sent at intervals, wherein at least one channel reserved frame is used to reserve a time period or to reserve at least two non-contiguous time periods at a time, wherein at least one channel is reserved.
  • the reserved frame is sent within a time period reserved by the previous channel reserved frame and is used to reserve a time period or to reserve at least two non-contiguous time periods at a time, and each reserved time period It is non-continuous.
  • the method further includes: a determining module, configured to determine, according to a period of the service data to be sent, and a quantity of data sent in each period, a length of a period of time required to be reserved in each period, where the at least two discontinuities
  • the time period is a non-contiguous time period corresponding to each period.
  • the at least two non-contiguous time periods are used to transmit uplink data, or both are used to transmit downlink data, or partially used to transmit uplink data and partially used to transmit downlink data.
  • the sending station of this embodiment may be used in the technical solution of the second embodiment of the information sending method, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 21 is a schematic structural diagram of Embodiment 4 of a transmitting station according to the present invention.
  • the transmitting station 210 provided in this embodiment includes a processor 2101 and a memory 2102.
  • the transmitting station 210 can also include a transmitter 2103 and a receiver 2104.
  • the transmitter 2103 and the receiver 2104 can be connected to the processor 2101.
  • the transmitter 2103 is configured to transmit data or information
  • the receiver 2104 is configured to receive data or information
  • the memory 2101 is configured to store execution instructions.
  • the processor 2101 communicates with the memory 2102.
  • the processor 2101 The execution instruction in the memory is used to perform the operation in the second embodiment of the above information transmission method.
  • the transmitting station in this embodiment may be used to implement the technical solution in the second embodiment of the foregoing information sending method of the present invention.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 22 is a schematic structural diagram of Embodiment 1 of a target station according to the present invention.
  • the target station 220 in this embodiment includes: a first receiving module 2201 and a second receiving module 2202.
  • the first receiving module 2201 is configured to receive the indication information sent by the sending station, where the indication information is used to indicate that the target station cannot actively initiate data transmission in at least two non-contiguous time periods;
  • the second receiving module 2202 is configured to receive data sent by the sending station during the at least two non-contiguous time periods.
  • the target site 220 further includes:
  • the replying module is configured to reply to the sending station with response information, where the response information is used to indicate that the receiving station cannot initiate data transmission actively within the at least two non-contiguous time periods.
  • the replying module is specifically configured to: if the indication information is sent by using one frame, send a response frame to the sending station; or
  • the indication information is sent by using at least two frames, where the at least two frames are divided into And storing information for indicating at least one of the at least two non-contiguous time periods, and transmitting at least two response frames correspondingly to the sending station.
  • the at least two non-contiguous time periods are used to transmit uplink data, or both are used to transmit downlink data, or partially used to transmit uplink data and partially used to transmit downlink data.
  • the target site in this embodiment may be used in the technical solution of the third embodiment of the information sending method, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 23 is a schematic structural diagram of Embodiment 2 of a target station according to the present invention.
  • the target site 230 provided by this embodiment includes a processor 2301 and a memory 2302.
  • the target site 230 can also include a transmitter 2303 and a receiver 2304.
  • the transmitter 2303 and the receiver 2304 can be connected to the processor 2301.
  • the transmitter 2303 is configured to transmit data or information
  • the receiver 2304 is configured to receive data or information
  • the memory 2301 is configured to store execution instructions.
  • the processor 2301 communicates with the memory 2302, and the processor 2301
  • the execution instruction in the memory is used to perform the operation in the third embodiment of the above information transmission method.
  • the target site of this embodiment may be used to implement the technical solution of the third embodiment of the foregoing information sending method of the present invention.
  • the implementation principle and the technical effects are similar, and details are not described herein again.
  • FIG. 24 is a schematic structural diagram of Embodiment 3 of a target station according to the present invention.
  • the target station 240 provided by this embodiment includes: a receiving module 2401, a sending module 2402, and a communication module 2403.
  • the receiving module 2401 is configured to receive a channel reserved frame sent by the sending station.
  • the sending module 2402 is configured to send, to the sending station, a response frame of the channel reserved frame, where the response frame is used to reserve at least two non-contiguous time segments, so that the non-target station that receives the response frame is received. Unable to transmit data during the at least two non-contiguous time periods;
  • the communication module 2403 is configured to communicate with the transmitting station during the reservation for at least two non-contiguous time periods.
  • the receiving module 2401 is specifically configured to receive a channel reservation frame sent by the sending station.
  • the sending module 2402 is specifically configured to send, to the sending station, a response frame of the one channel reserved frame, where the response The frame is used to reserve at least two non-contiguous time periods at a time;
  • the receiving module 2401 is specifically configured to receive at least two channel reserved frames sent by the sending station interval;
  • the sending module 2402 is specifically configured to send, to the sending station interval, a response frame of the at least two channel reserved frames, where at least one response frame is used to reserve a time period or once At least two non-contiguous time periods are reserved, wherein at least one response frame is sent within a time period reserved by the previous response frame and is used to reserve a time period or reserve at least two non-times at a time. For consecutive time periods, the reserved time periods are non-contiguous.
  • the at least two non-contiguous time periods are used to transmit uplink data, or both are used to transmit downlink data, or partially used to transmit uplink data and partially used to transmit downlink data.
  • the target site in this embodiment may be used in the technical solution of the fourth embodiment of the information sending method, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 25 is a schematic structural diagram of Embodiment 4 of a target station according to the present invention.
  • the target site 250 provided by this embodiment includes a processor 2501 and a memory 2502.
  • the target site 250 can also include a transmitter 2503 and a receiver 2504.
  • the transmitter 2503 and the receiver 2504 can be connected to the processor 2501.
  • the transmitter 2503 is configured to transmit data or information
  • the receiver 2504 is configured to receive data or information
  • the memory 2501 is configured to store execution instructions.
  • the processor 2501 communicates with the memory 2502.
  • the processor 2501 The execution instruction in the memory is used to perform the operation in the fourth embodiment of the above information transmission method.
  • the target site of this embodiment may be used to implement the technical solution of the fourth embodiment of the foregoing information sending method of the present invention.
  • the implementation principle and technical effects are similar, and are not described herein again.
  • FIG. 26 is a schematic structural diagram of Embodiment 5 of a transmitting station according to the present invention.
  • the sending station 260 provided in this embodiment includes: an indicating module 2601, a first sending module 2602, and a second sending module 2603.
  • the indication module 2601 is configured to send indication information, where the indication information is used to indicate a reserved time period;
  • the first sending module 2602 is configured to send data during the reserved time period
  • the second sending module 2603 is configured to send the release information in the reserved time period, where the release information is used to instruct the receiving station to release at least a part of the remaining time period of the time period.
  • the reserved time period is a continuous period of time or at least two non-contiguous periods of time.
  • the sending station of this embodiment can be used in the technical solution of the fifth embodiment of the information sending method, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 27 is a schematic structural diagram of Embodiment 6 of a transmitting station according to the present invention.
  • the transmitting station 270 provided by the example includes a processor 2701 and a memory 2702.
  • the transmitting site 270 can also include a transmitter 2703 and a receiver 2704.
  • the transmitter 2703 and the receiver 2704 can be connected to the processor 2701.
  • the transmitter 2703 is configured to transmit data or information
  • the receiver 2704 is configured to receive data or information
  • the memory 2701 is configured to store execution instructions.
  • the processor 2701 communicates with the memory 2702, and the processor 2701
  • the execution instruction in the memory is used to perform the operation in the fifth embodiment of the above information transmission method.
  • the transmitting station in this embodiment may be used to implement the technical solution in the fifth embodiment of the foregoing information sending method of the present invention.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • the transmitting station 280 provided in this embodiment includes: a first sending module 2801, a second sending module 2802, and a third sending module 2803.
  • the first sending module 2801 is configured to send a channel reservation frame after the contention channel succeeds, to reserve a time period for sending data to the target station;
  • the second sending module 2802 is configured to send data in a reserved time period
  • the third sending module 2803 is configured to send a channel release frame in a process of transmitting data in the time period, where the channel release frame is used to release at least a part of the time period in the remaining time period.
  • the first sending module 2801 is specifically configured to send a channel reservation frame after the contention channel succeeds, to reserve a continuous period of time;
  • the second sending module 2802 is specifically configured to send data in the continuous period of time reserved after the contention channel succeeds
  • the third sending module 2803 is specifically configured to send a channel release frame in a process of transmitting data in the reserved continuous period of time, where the channel release frame is used to release the reserved period of time At least a portion of the time period of the remaining time period of the segment;
  • the first sending module 2801 is specifically configured to send a channel reservation frame after the contention channel succeeds, to reserve at least two non-contiguous time periods;
  • the second sending module 2802 is specifically configured to send data in the at least two non-contiguous time periods reserved after the contention channel succeeds;
  • the third sending module 2803 is specifically configured to send a channel release frame during the process of sending data in the time period, where the channel release frame is used to release the reserved at least two discontinuous times At least a portion of the time period of the remaining time period of the interval.
  • the sending station of this embodiment may be used in the technical solution of the sixth embodiment of the information sending method, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 29 is a schematic structural diagram of Embodiment 8 of a transmitting station according to the present invention.
  • the transmitting site 290 provided by this embodiment includes a processor 2901 and a memory 2902.
  • the transmitting site 290 can also include a transmitter 2903 and a receiver 2904.
  • the transmitter 2903 and the receiver 2904 can be connected to the processor 2901.
  • the transmitter 2903 is configured to transmit data or information
  • the receiver 2904 is configured to receive data or information
  • the memory 2901 is configured to store execution instructions.
  • the processor 2901 communicates with the memory 2902, and the processor 2901
  • the execution instruction in the memory is used to perform the operation in Embodiment 6 of the above information transmission method.
  • the transmitting station of this embodiment may be used to perform the technical solution of the foregoing sixth embodiment of the information transmitting method of the present invention.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 30 is a schematic structural diagram of Embodiment 1 of a receiving station according to the present invention.
  • the receiving station 300 provided in this embodiment includes: a first receiving module 3001 and a second receiving module 3002.
  • the first receiving module 3001 is configured to receive the indication information sent by the sending station, where the indication information is used to indicate a reserved time period;
  • the second receiving module 3002 is configured to receive, in the reserved time period, the release information sent by the sending station, where the release information is used to indicate that the receiving station releases the remaining time period of the time period. At least part of the time period.
  • the reserved time period is a continuous period of time or at least two non-contiguous periods of time.
  • the receiving station in this embodiment may be used in the technical solution of the seventh embodiment of the information sending method, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 31 is a schematic structural diagram of Embodiment 2 of a receiving station according to the present invention.
  • the receiving station 310 provided in this embodiment includes a processor 3101 and a memory 3102.
  • the receiving station 310 can also include a transmitter 3103 and a receiver 3104.
  • the transmitter 3103 and the receiver 3104 can be connected to the processor 3101.
  • the transmitter 3103 is configured to transmit data or information
  • the receiver 3104 is configured to receive data or information
  • the memory 3101 is configured to store execution instructions.
  • the processor 3101 communicates with the memory 3102.
  • the processor 3101 The execution instruction in the memory is used to perform the operation in the seventh embodiment of the above information transmission method.
  • the receiving station of this embodiment may be used to implement the technical solution of the foregoing seventh embodiment of the information sending method of the present invention. The implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 32 is a schematic structural diagram of Embodiment 3 of a receiving station according to the present invention.
  • the receiving station 320 provided in this embodiment includes: a receiving module 3201 and a releasing module 3202.
  • the receiving module 3201 is configured to receive, in a reserved time period, a channel release frame sent by the sending station, where the channel release frame is used to release at least a part of the remaining time period;
  • the release module 3202 is configured to release at least a portion of the remaining time periods according to the channel release frame.
  • the receiving module 3201 is specifically configured to receive, in a reserved period of time, a channel release frame sent by the sending station;
  • the release module specific 3202 is configured to release at least a part of the remaining time periods of the reserved consecutive time period according to the channel release frame;
  • the receiving module 3201 is specifically configured to receive, in the reserved at least two non-contiguous time periods, a channel release frame sent by the sending station;
  • the releasing module 3202 is specifically configured to release at least a part of the remaining time periods of the reserved at least two non-contiguous time periods according to the channel release frame.
  • the receiving station in this embodiment may be used in the technical solution of the eighth embodiment of the information sending method, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 33 is a schematic structural diagram of Embodiment 4 of a receiving station according to the present invention.
  • the receiving station 330 provided in this embodiment includes a processor 3301 and a memory 3302.
  • the receiving station 330 can also include a transmitter 3303 and a receiver 3304.
  • the transmitter 3303 and the receiver 3304 can be connected to the processor 3301.
  • the transmitter 3303 is configured to send data or information
  • the receiver 3304 is configured to receive data or information
  • the memory 3301 is configured to store execution instructions.
  • the processor 3301 communicates with the memory 3302, and the processor 3301
  • the execution instruction in the memory is used to perform the operation in the eighth embodiment of the above information transmission method.
  • the receiving station of this embodiment may be used to implement the technical solution of the eighth embodiment of the foregoing information sending method of the present invention.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • the aforementioned program can be stored in a computer Read in the storage medium.
  • the steps including the foregoing method embodiments are performed; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Abstract

本发明实施例提供一种信息发送方法及装置。本发明信息发送方法，包括：发送站点竞争信道；所述发送站点在竞争信道成功后发送指示信息，其中，所述指示信息用于指示接收站点在至少两个非连续的时间段内不能主动发起数据传输；所述发送站点在所述至少两个非连续的时间段内发送数据。本发明实施例实现了在一些数据不连续发送的场景中灵活地预留多段不连续时间段，节省信道资源。

Description

信息发送方法及装置
技术领域
本发明实施例涉及通信技术， 尤其涉及一种信息发送方法及装置。
背景技术
无线局域网 （Wireless Local Area Networks, 简称 WLAN) 系统中， 多站 点之间是通过载波侦听多点接入 /冲突避免（Carrier Sense Multiple Access with Collision Avoidance, 简称 CSMA/CA) 竞争机制来共享信道资源的， 多用户 站点竞争信道的时候， 不可避免地会产生碰撞。 为了降低碰撞概率， 引入了 一种通过设置网络分配矢量 （Network Allocation Vector, 简称 NAV) 来预留 信道的机制， NAV用来指定发送站点预计要占用信道多少时间， 被设置 NAV 的站点在 NAV规定时段内需要保持静默状态， 从而保证在该时间段内两个站 点可以不受干扰地进行通信。
现有技术通过请求发送 /允许发送 （Request to Send/Clear to Send, 简称 RTS/CTS ) 帧交互等方法把发送端和接收端周围的所有站点设置 NAV, 将从 当前帧开始的一段时间预留下来。 当数据已经发送完毕， 但是预留时间还有 剩余的时候可以通过发送无竞争结束 （Contention free-end, 简称 CF-end) 帧 将剩余的预留时间全部释放。
现有技术的预留和释放不是很灵活， 不利于在一些数据不连续发送的场 景中的信道预留及释放， 造成信道资源浪费。 发明内容
本发明实施例提供一种信息发送方法及装置， 以实现在一些数据不连续 发送的场景中灵活地信道预留和释放。
第一方面， 本发明实施例提供一种信息发送方法， 包括：
发送站点竞争信道；
所述发送站点在竞争信道成功后发送指示信息， 其中， 所述指示信息用 于指示接收站点在至少两个非连续的时间段内不能主动发起数据传输； 所述发送站点在所述至少两个非连续的时间段内发送数据。
进一步地， 所述发送站点在所述至少两个非连续的时间段内发送数据之 前， 还包括 r
所述发送站点接收目标站点回复的响应信息， 其中， 所述响应信息用于 指示接收站点在所述至少两个非连续的时间段内不能主动发起数据传输。
进一步地， 所述指示信息通过一个帧发送， 其中， 所述帧中包含用于指 示所述至少两个非连续时间段的信息； 或者，
所述指示信息通过至少两个帧发送， 其中， 所述至少两个帧中分别包含 用于指示所述至少两个非连续时间段中的至少一个时间段的信息， 并且所述 至少两个帧中的后一个帧是在前一个帧指示的时间段内发送的。
进一步地， 所述发送站点发送所述指示信息之前， 还包括：
所述发送站点根据待发送数据的周期以及各周期内发送的数据量， 确定 所述至少两个非连续的时间段的长度。
进一步地， 所述至少两个非连续的时间段均用于传输上行数据， 或者均 用于传输下行数据， 或者部分用于传输上行数据且部分用于传输下行数据。
第二方面， 本发明实施例提供一种信息发送方法， 包括：
目标站点接收发送站点发送的指示信息； 其中， 所述指示信息用于指示 所述目标站点在至少两个非连续的时间段内不能主动发起数据传输；
所述目标站点在所述至少两个非连续的时间段内接收所述发送站点发送 的数据。
进一步地， 所述目标站点在所述至少两个非连续的时间段内接收所述发 送站点发送的数据之前， 还包括：
所述目标站点向所述发送站点回复响应信息， 其中， 所述响应信息用于 指示接收站点在所述至少两个非连续的时间段内不能主动发起数据传输。
进一步地， 所述目标站点向所述发送站点回复响应信息， 包括： 若所述指示信息是通过一个帧发送的， 则所述目标站点向所述发送站点 发送一个响应帧； 或者，
若所述指示信息是通过至少两个帧发送的， 其中， 所述至少两个帧中分 别包含用于指示所述至少两个非连续时间段中的至少一个时间段的信息， 则 所述目标站点向所述发送站点对应地发送至少两个响应帧。
进一步地， 所述至少两个非连续的时间段均用于传输上行数据， 或者均 用于传输下行数据， 或者部分用于传输上行数据且部分用于传输下行数据。
第三方面， 本发明实施例提供一种信息发送方法， 包括：
发送站点发送指示信息， 其中， 所述指示信息用于指示预留的时间段； 所述发送站点在所述预留的时间段内发送数据；
所述发送站点在所述预留的时间段内发送释放信息， 其中， 所述释放信 息用于指示接收站点释放所述时间段的剩余时间段中的至少一部分时间段。
进一步地， 所述预留的时间段为一段连续的时间段或至少两个非连续的 时间段。
第四方面， 本发明实施例提供一种信息发送方法， 包括：
接收站点接收发送站点发送的指示信息， 其中， 所述指示信息用于指示 预留的时间段；
所述接收站点在所述预留的时间段内接收所述发送站点发送的释放信 息， 其中， 所述释放信息用于指示所述接收站点释放所述时间段的剩余时间 段中的至少一部分时间段。
进一步地， 所述预留的时间段为一段连续的时间段或至少两个非连续的 时间段。
第五方面， 本发明实施例提供一种发送站点， 包括：
竞争模块， 用于竞争信道；
指示模块， 用于在竞争信道成功后发送指示信息， 其中， 所述指示信息 用于指示接收站点在至少两个非连续的时间段内不能主动发起数据传输； 发送模块， 用于在所述至少两个非连续的时间段内发送数据。
进一步地， 所述发送站点， 还包括：
接收模块， 用于接收目标站点回复的响应信息， 其中， 所述响应信息用 于指示接收站点在所述至少两个非连续的时间段内不能主动发起数据传输。
进一步地， 所述指示信息通过一个帧发送， 其中， 所述帧中包含用于指 示所述至少两个非连续时间段的信息； 或者，
所述指示信息通过至少两个帧发送， 其中， 所述至少两个帧中分别包含 用于指示所述至少两个非连续时间段中的至少一个时间段的信息， 并且所述 至少两个帧中的后一个帧是在前一个帧指示的时间段内发送的。
进一步地， 所述发送站点， 还包括：
确定模块， 用于根据待发送数据的周期以及各周期内发送的数据量， 确 定所述至少两个非连续的时间段的长度。
进一步地， 所述至少两个非连续的时间段均用于传输上行数据， 或者均 用于传输下行数据， 或者部分用于传输上行数据且部分用于传输下行数据。
第六方面， 本发明实施例提供一种目标站点， 包括：
第一接收模块， 用于接收发送站点发送的指示信息； 其中， 所述指示信 息用于指示所述目标站点在至少两个非连续的时间段内不能主动发起数据传 输；
第二接收模块， 用于在所述至少两个非连续的时间段内接收所述发送站 点发送的数据。
进一步地， 所述目标站点， 还包括：
回复模块， 用于向所述发送站点回复响应信息， 其中， 所述响应信息用 于指示接收站点在所述至少两个非连续的时间段内不能主动发起数据传输。
进一步地， 所述回复模块具体用于： 若所述指示信息是通过一个帧发送 的， 则向所述发送站点发送一个响应帧； 或者，
若所述指示信息是通过至少两个帧发送的， 其中， 所述至少两个帧中分 别包含用于指示所述至少两个非连续时间段中的至少一个时间段的信息， 则 向所述发送站点对应地发送至少两个响应帧。
进一步地， 所述至少两个非连续的时间段均用于传输上行数据， 或者均 用于传输下行数据， 或者部分用于传输上行数据且部分用于传输下行数据。
第七方面， 本发明实施例提供一种发送站点， 包括：
指示模块， 用于发送指示信息， 其中， 所述指示信息用于指示预留的时 间段；
第一发送模块， 用于在所述预留的时间段内发送数据；
第二发送模块， 用于在所述预留的时间段内发送释放信息， 其中， 所述 释放信息用于指示接收站点释放所述时间段的剩余时间段中的至少一部分时 间段。
进一步地， 所述预留的时间段为一段连续的时间段或至少两个非连续的 时间段。
第八方面， 本发明实施例提供一种接收站点， 包括：
第一接收模块， 接收发送站点发送的指示信息， 其中， 所述指示信息用 于指示预留的时间段；
第二接收模块， 用于在所述预留的时间段内接收所述发送站点发送的释 放信息， 其中， 所述释放信息用于指示所述接收站点释放所述时间段的剩余 时间段中的至少一部分时间段。
进一步地， 所述预留的时间段为一段连续的时间段或至少两个非连续的 时间段。
本实施例， 发送站点通过发送用于指示接收站点在至少两个非连续的时 间段内不能主动发起数据传输的指示信息， 且在所述至少两个非连续的时间 段内发送数据， 从而实现了在一些数据不连续发送的场景中可经过一次信道 竞争而灵活地预留多段不连续时间段的信道预留， 节省了竞争开销， 同时节 省信道资源。 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一简单地介绍， 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为本发明信息发送方法实施例一的流程示意图；
图 2为本发明信息发送方法实施例一的示意图一；
图 3为本发明信息发送方法实施例一的示意图二；
图 4为本发明信息发送方法实施例一的示意图三；
图 5为本发明信息发送方法实施例一的示意图四；
图 6为本发明信息发送方法实施例一的示意图五；
图 7为本发明信息发送方法实施例二的流程示意图；
图 8为本发明信息发送方法实施例三的流程示意图；
图 9为本发明信息发送方法实施例三的示意图一；
图 10为本发明信息发送方法实施例三的示意图二； 11为本发明信息发送方法实施例四的流程示意图
12为本发明信息发送方法实施例五的流程示意图
13为本发明信息发送方法实施例五的示意图一；
14为本发明信息发送方法实施例五的示意图二；
15为本发明信息发送方法实施例六的流程示意图
16为本发明信息发送方法实施例七的流程示意图
17为本发明信息发送方法实施例八的流程示意图
18为本发明发送站点实施例一的；
19为本发明发送站点实施例二的；
20为本发明发送站点实施例三的；
21为本发明发送站点实施例四的；
22为本发明目标站点实施例一的；
23为本发明目标站点实施例二的；
24为本发明目标站点实施例三的；
25为本发明目标站点实施例四的；
26为本发明发送站点实施例五的；
27为本发明发送站点实施例六的；
28为本发明发送站点实施例七的；
29为本发明发送站点实施 1
30为本发明接收站点实施例一的；
31为本发明接收站点实施例二的；
32为本发明接收站点实施例三的；
33为本发明接收站点实施例四的； 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作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。 图 1为本发明信息发送方法实施例一的流程示意图， 如图 1所示， 本实 施例的方法可以包括：
步骤 101、 发送站点竞争信道。
在 WLAN系统中，多站点之间是通过 CSMA/CA竞争机制来共享信道资 源的， 即当站点有数据需要发送时需要先竞争信道。 其中， CSMA/CA 竞争 机制的基本原理是每个站点在发送数据之前先侦听信道的忙 /闲状态， 只有当 信道空闲到一定的时间长度之后 （例如， DIFS) 才开始退避计数， 通过退避 方式， 可以减少碰撞。 其中， 退避计数的数值是从退避窗口中随机选取获得 的。 当某一次退避计数器数值减为零之前信道又开始繁忙的时候， 退避计数 将被挂起， 等待下一次信道空闲达到一定时长后再继续进行退避计数， 重复 上述过程直至退避计数器数值减为零， 即退避计数结束， 则代表该发送站点 竞争信道成功。
步骤 102、 所述发送站点在竞争信道成功后发送指示信息， 其中， 所述 指示信息用于指示接收站点在至少两个非连续的时间段内不能主动发起数据 传输。
具体地， 所述指示信息可以通过一个帧发送， 其中， 所述帧中包含用于 指示所述至少两个非连续时间段的信息； 或者， 所述指示信息通过至少两个 帧发送， 其中， 所述至少两个帧中分别包含用于指示所述至少两个非连续时 间段中的至少一个时间段的信息， 并且所述至少两个帧中的后一个帧是在前 一个帧指示的时间段内发送的。
本实施例中， 发送站点竞争信道成功后发送指示信息， 该指示信息用于 指示接收站点 （即接收到该指示信息的站点） 在至少两个非连续的时间段内 不能主动发起数据传输。可选地，所述指示信息可以为 RTS帧或者 CTS-to-sdf 帧或者 data帧等预留帧， 其中， 该些预留帧的 MAC头中携带用于设置 NAV 的字段， 例如 Duration字段。
可选地， 所述指示信息可以通过一个帧发送， 其中， 所述帧中包含用于 指示所述至少两个非连续时间段的信息； 或者， 所述指示信息通过至少两个 帧发送， 其中， 所述至少两个帧中分别包含用于指示所述至少两个非连续时 间段中的至少一个时间段的信息， 并且所述至少两个帧中的后一个帧是在前 一个帧指示的时间段内发送的。 具体地， 第一种可实现方式为： 所述指示信息可以通过一个预留帧发送 时， 该预留帧的 MAC头中携带的 Duration字段可以为一个或多个， 其中当 携带一个 Duration字段时， 该 Duration字段对应至少两个不同的起始时刻， 即所述预留帧中包含用于指示所述至少两个非连续时间段的信息； 第二种可 实现方式为： 所述指示消息可以通过至少两个预留帧发送时， 该些预留帧的 MAC头中携带的 Duration字段可以为一个或者多个，即所述至少两个预留帧 中分别包含用于指示所述至少两个非连续时间段中的至少一个时间段的信 息， 并且所述至少两个预留帧中的后一个预留帧是在前一个预留帧指示的时 间段内发送的。
其中， 该些预留帧用于指示接收到该预留帧的接收站点在至少两个非连 续的时间段内不能主动发起数据传输， 从而成功预留至少两个非连续的时间 段， 其中， 所述接收站点包括： 目标站点 （所述发送站点将要进行数据发送 的站点）与非目标站点 （除了该目标站点之外的接收站点）。 当非目标站点接 收到该些预留帧后， 把该些 Duration字段所指示的时长设为 NAV数值， 并保 证在所述至少两个非连续的时间段内部（即 NAV时间内）不主动进行任何发 送， 即使信道空闲也不可以发送。 其中， NAV 时间段被称为传输机会 (Transmission opportunity ，简称 TXOP) ,成功对其它站点进行 NAV设置的 站点叫做传输机会持有者 （Transmission opportunity holder , 简称 TXOP holder ) o 可选地， 该预留时间段信息可根据实际情况的信息获得， 例如对于 周期业务， 可根据每个周期内所需的预留时间长度等信息确定， 对于上下行 业务可以根据上下行业务中的已知划分方法及上下行时间段内所需的预留时 间长度等信息确定， 对于一些可以根据已知的统计总结可判断将要需要预留 时间段等信息确定等。
可选地， 在本实施例中， 发送站点在竞争信道成功后通过一个预留帧发 送指示消息， 该预留帧可以采用不同的帧格式， 例如"起始时间 1+时长 1+起 始时间 2+时长 2+...+起始时间 n+时长 n"， 或者"起始时间 1+终止时间 1+起 始时间 2+终止时间 2+...+起始时间 n+终止时间 n"等格式，所述 n可以根据具 体的实际情况确定， 其中的时间信息根据实际应用情况获得。 进一步地， 如 果所述预留帧格式中省略了起始时间， 则所述起始时间可以是默认的， 例如 从当前帧结束开始。 可选地， 在本实施例中， 发送站点在竞争信道成功后通过至少两个帧发 送指示消息的方法又可以包括同时多段预留及分布多段预留两大类方法。 其 中， 同时多段预留技术可以通过发送站点在竞争信道成功后发送一个用于指 示接收站点在至少两个非连续的时间段内不能主动发起数据传输的预留帧而 实现同时预留多个非连续的时间段； 分步多段预留技术可以通过发送站点在 竞争信道成功后间隔发送至少两个用于指示接收站点在至少两个非连续时间 段中的至少一个时间段内不能主动发起数据传输的预留帧， 其中， 所述至少 两个预留帧中的后一个预留帧是在前一个预留帧指示的时间段内发送的。
第一种同时多段预留技术中， 图 2为本发明信息发送方法实施例一的示 意图一， 如图 2所示， 本实施例中， 发送站点竞争信道成功后， 即退避计数 结束后发送一个 RTS帧， 在该 RTS帧的 MAC头中携带了至少两个 Duration 字段或一个 Duration字段但对应多个不同的起始时刻，该字段用于设置 NAV, 即该 RTS帧用于指示接收站点在至少两个非连续的时间段内不能主动发起数 据传输， 即非目标站点接收到该帧后， 把该些 Duration字段所指示的时长设 为 NAV数值， 并保证在所设的至少两个非连续的时间段内部 （即 NAV时间 内） 不进行任何发送， 即使信道空闲也不可以发送。
针对第二种分步多段预留技术， 图 3为本发明信息发送方法实施例一的 示意图二， 如图 3所示， 本实施例中， 发送站点竞争信道成功后， 即退避计 数结束后， 首先发送一个 RTS 帧， 在该 RTS 帧的 MAC 头中携带了一个 Duration字段， 该字段用于设置 NAV, 即该 RTS帧用于指示接收站点在所述 时间段内不能主动发起数据传输，即非目标站点接收到该帧后，把该 Duration 字段所指示的时长设为 NAV数值， 并保证在所设的时间段内部 （即 NAV时 间内） 不进行任何发送。 可选地， 依照上述方法， 可以在该预留时间内进行 下一次预留时间的设置， 由此不断地预留更多的时间段。
针对第二种分步多段预留技术， 图 4为本发明信息发送方法实施例一的 示意图三， 如图 4所示， 以第一个预留帧用于指示接收站点在至少两个非连 续的时间段内不能主动发起数据传输， 第二个预留帧是在第一个预留帧指示 的时间段内发送的用于指示接收站点在一个时间段内不能主动发起数据传输 为例， 发送站点竞争信道成功后， 即退避计数结束后， 首先发送一个 RTS帧， 在该 RTS帧的 MAC头中携带了两个 Duration字段， 该字段用于设置 NAV, 即该帧指示接收站点在至少两个非连续的时间段内不能主动发起数据传输， 即非目标站点接收到该帧后，把该些 Duration字段所指示的时长设为 NAV数 值， 并保证在所设的时间段内部 （即 NAV时间内） 不进行任何发送； 然后， 在该预留的第二时间内发送另外一个 RTS帧， 在该 RTS帧的 MAC头中携带 了 1个 Duration字段且该 Duration字段包含一个时间段信息， 该字段用于设 置 NAV, 即该帧指示接收站点在所述时间段内不能主动发起数据传输， 从而 实现指示接收站点在至少两个非连续的时间段内不能主动发起数据传输， 成 功预留至少两个非连续的时间段。
而现有技术中， 通过一次信道竞争只可以预留一段连续的时间段， 对于 一些数据不连续发送的场景中， 每次都需要进行信道竞争， 则竞争开销很大。 在本实施例中， 通过一次信道竞争成功后发送的可用于预留至少两个非连续 时间段的预留帧的目的就是为了实现在一些数据不连续发送的场景中经过一 次信道竞争后， 一次可以预留至少两个非连续的时间段， 从而减少竞争开销。 其中， 数据不连续发送可能会发生在很多场景中， 本实施以下描述中以周期 性业务及上下行通信两种典型场景为例对本实施上述技术方案作进一步地解 释说明。
对于周期性业务场景中， 进一步地， 在所述发送站点发送信道预留帧之 前， 还可包括：
所述发送站点根据待发送业务数据的周期以及各周期内发送的数据量， 确定所述至少两个非连续的时间段的长度。
本实施例中， 通过发送站点根据待发送业务数据的周期以及各周期内发 送的数据量， 确定在每个周期内需要预留的时间段长度， 以便于下一步发送 预留帧时将上述确定的预留的时间段信息写进该预留帧中， 从而实现预留多 个时间段。
针对第一种同时多段预留技术中， 发送站点在竞争信道成功后发送一个 信道预留帧， 该信道预留帧可以采用如上所述不同的帧格式， 例如还可以为 "周期长度 +周期数目 +起始时间 +每个周期内的预留时间长度"。对于在多接入 点部署的上下行通信业务场景中， 为了减小不同基站子系统 （Base Station Subsystem, 简称 BSS )之间的上下行之间的交叉干扰而将通信时间划分为上 下行阶段。 当同时有上下行数据， 但是数据又不需要占用所有上下行时间段 的时候就会产生上下行发送之间的不连续， 如果上下行分开独立竞争则增加 了竞争开销。
在本实施中， 在获得信道的时候， 可以同时把上下行的时段都进行预留， 例如访问节点 （Access Point, 简称 AP) 通过竞争获得信道的时候可以把上 行的部分时间或下行的部分时间或上下行的部分时间或全部时间进行预留， 即步骤 102中所述至少两个非连续的时间段均用于传输上行数据， 或者均用 于传输下行数据， 或者部分用于传输上行数据且部分用于传输下行数据。
在本实施例中， 由于将通信时间划分为上下行阶段， 即可看做是具有固 定周期， 因此， 可以看做为周期性业务场景中的一种特例。 根据实际情况判 断只需要预留传输上行数据， 或者只需要预留传输下行数据， 或者需要预留 部分传输上行数据和部分传输下行数据， 从而所述信道预留帧中包含相对应 的预留数据信息。
针对第一种同时多段预留技术， 图 5为本发明信息发送方法实施例一的 示意图四， 如图 5所示， 以只预留两段传输上下行不连续的时间段为例， 发 送站点竞争信道成功后， 即退避计数结束后发送一个 RTS帧， 在该 RTS帧的 MAC头中携带了两个 Duration字段， 该字段用于设置 NAV, 即该信道预留 帧分别用于预留上下行通信中两个非连续的时间段， 即下行段 （Downlink period, 简称 DL period) 和上行段 （Uplink period, 简称 UL period), 以使非 目标站点接收到该信道预留帧后， 把该些 Duration 字段所指示的时长设为 NAV数值， 并保证在所设的两个非连续的时间段内部 （即 NAV时间内） 不 进行任何发送， 即使信道空闲也不可以发送。
针对第二种分步多段预留技术中的第一种可实现方式， 图 6为本发明信 息发送方法实施例一的示意图五， 如图 6所示， 以只预留两段传输上下行不 连续的时间段为例， 发送站点竞争信道成功后， 即退避计数结束后， 首先发 送一个 RTS帧， 在该 RTS帧的 MAC头中携带了一个 Duration字段， 该字段 用于设置 NAV, 即该信道预留帧用于预留上行通信中的一个时间段即上行段 (Uplink period, 简称 UL period), 以使非目标站点接收到该信道预留帧后， 把该 Duration字段所指示的时长设为 NAV数值，并保证在所设的时间段内部 (即 NAV时间内）不进行任何发送； 然后， 在该预留时间内按照上述方法进 行下行通信预留时间的设置即下行段 （Downlink period, 简称 DL period)。 本实施例中以周期性业务及上下行通信两种典型场景为例对本实施例上 述技术方案作进一步地解释说明， 而对于其它的不连续发送场景亦可以采用 上述方法实现一次竞争后多段预留技术， 在此不再赘述。
在本实施例中的同时多段预留机制中， 为了防止一个站点预留太多的资 源而影响其它站点的通信， 可以增加一些限制条件， 例如限制每次预留的总 时间长度， 或者限制每次预留时间段的数目等。
步骤 103、 所述发送站点在所述至少两个非连续的时间段内发送数据。 本实施例中， 发送站点通过在竞争信道成功后发送指示消息， 该指示消 息用于指示接收站点在至少两个非连续的时间段内不能主动发起数据传输， 即对非目标站点设置 NAV, 以使被设置 NAV的站点在 NAV时段内保持静默 状态， 由此保证在该预留的至少两个非连续的时间段内其它站点不会干扰该 发送站点的数据发送。
可选地，所述发送站点在所述至少两个非连续的时间段内发送数据之前， 还包括： 所述发送站点接收目标站点回复的响应信息， 其中， 所述响应信息 用于指示接收站点在所述至少两个非连续的时间段内不能主动发起数据传 输。
本发明实施例中， 本实施例中， 发送站点接收当目标站点正确接收由该 发送站点发送的信道预留帧后回复的响应信息， 该响应信息对应的可以为与 RTS帧对应的 CTS帧、 与 data帧对应的 ACK帧等响应帧， 该些响应帧的 MAC头中亦携带 Duration字段，该 Duration字段与发送站点发送的预留帧的 MAC头中携带的用于设置 NAV的 Duration字段根据该信道预留帧格式可以 相同， 或者不同但是用于预留相同的时间段， 该响应帧可以用于指示接收站 点 （接收到该响应帧的站点） 在所述至少两个非连续的时间段内不能主动发 起数据传输， 即为所述响应帧的接收站点设置了 NAV, 从而实现除发送站点 与目标站点之外的所有站点都被设置了 NAV, 保证了在所述预留的时间段内 发送站点与目标站点可以不受干扰地进行通信。 可选地， 该响应帧的接收站 点可能与所述预留帧的接收站点有所重复， 但即使有重复， 本申请只要能保 证除发送站点与目标站点之外的所有站点都被设置了 NAV即可， 因此， 本实 施例在此并不作限制。
一个站点被设置 NAV 之后， 在当前 NAV 结束之前若又收到携带更长 NAV的帧，则更新 NAV;若新收到的 NAV比自身设置的 NAV短则不需更新。 本实施例中以设置 NAV为例来说明预留至少两个非连续时间段的过程， 但本发明并不以此为限。
本实施例， 发送站点通过发送用于指示接收站点在至少两个非连续的时 间段内不能主动发起数据传输的指示信息， 且在所述至少两个非连续的时间 段内发送数据， 从而实现了在一些数据不连续发送的场景中可经过一次信道 竞争而灵活地预留多段不连续时间段的信道预留， 节省了竞争开销， 同时节 省信道资源。
图 7为本发明信息发送方法实施例二的流程示意图， 如图 7所示， 本实 施例的方法可以包括：
步骤 701、 发送站点竞争信道。
步骤 702、 所述发送站点在竞争信道成功后发送信道预留帧， 所述信道 预留帧用于预留至少两个非连续的时间段， 以使接收到所述信道预留帧的非 目标站点在所述至少两个非连续的时间段内不能发送数据。
具体地： 所述发送站点在竞争信道成功后发送一个信道预留帧， 所述信 道预留帧用于预留至少两个非连续的时间段； 或者， 所述发送站点在竞争信 道成功后间隔发送至少两个信道预留帧， 其中至少有一个信道预留帧用于预 留一个时间段或者一次性预留至少两个非连续的时间段， 其中， 至少有一个 信道预留帧是在前一个信道预留帧预留的时间段内发送的且用于预留一个时 间段或者一次性预留至少两个非连续的时间段，预留的各时间段是非连续的。
本实施例中， 发送站点竞争信道成功后发送信道预留帧， 该信道预留帧 可以为 RTS帧、 CTS-to-self帧、 data帧等， 在该信道预留帧的 MAC头中携 带用于设置 NAV的字段， 例如 Duration字段。该信道预留帧可以为一个或者 多个， 对应地， 当该信道预留帧为 1个时， 该信道预留帧的 MAC头中携带 的 Duration 字段可以为一个或多个， 其中当携带一个 Duration 字段时， 该 Duration 字段对应多个不同的起始时刻； 当该信道预留帧为多个时， 该信道 预留帧的 MAC头中携带的 Duration字段可以为一个或者多个。 即该信道预 留帧用于预留至少两个非连续的时间段， 以使非目标站点 （除了该信道预留 帧的目标站点之外的接收站点） 接收到该信道预留帧后， 把该些 Duration字 段所指示的时长设为 NAV数值，并保证在所述至少两个非连续的时间段内部 (即 NAV时间内） 不进行任何发送， 即使信道空闲也不可以发送。 NAV时 间段被称为传输机会 （Transmission opportunity ， 简称 TXOP) , 成功对其它 站点进行 NAV 设置的站点叫做传输机会持有者 （Transmission opportunity holder, 简称 TXOP holder)。 该预留时间段信息可根据实际情况的信息获得， 例如对于周期业务， 可根据每个周期内所需的预留时间长度等信息确定， 对 于上下行业务可以根据上下行业务中的已知划分方法及上下行时间段内所需 的预留时间长度等信息确定， 对于一些可以根据已知的统计总结可判断将要 需要预留时间段等信息确定等。
在本实施例中， 发送站点在竞争信道成功后发送一个信道预留帧， 该信 道预留帧可以采用不同的帧格式， 例如"起始时间 1+时长 1+起始时间 2+时长 2+...+起始时间 n+时长 n"，或者"起始时间 1+终止时间 1+起始时间 2+终止时 间 2+...+起始时间 n+终止时间 n"等格式， 所述 n可以根据具体的实际情况确 定， 其中的时间信息根据实际应用情况获得。 进一步地， 如果所述信道预留 帧格式中省略了起始时间， 则所述起始时间可以是默认的， 例如从当前帧结 束开始。
本实施例中， 发送站点竞争信道成功后发送信道预留帧预留至少两个非 连续时间段的方法可以包括同时多段预留及分步多段预留两大类方法。其中， 同时多段预留技术可以通过发送站点在竞争信道成功后发送一个用于预留至 少两个非连续时间段的信道预留帧而实现同时预留多个非连续的时间段； 分 步多段预留技术可以通过发送站点在竞争信道成功后间隔发送至少两个信道 预留帧， 其中至少有一个信道预留帧用于预留一个时间段或者一次性预留至 少两个非连续的时间段， 其中， 至少有一个信道预留帧是在前一个信道预留 帧预留的时间段内发送的且用于预留一个时间段或者一次性预留至少两个非 连续的时间段， 预留的各时间段是非连续的。
第一种同时多段预留技术中， 本实施例中， 发送站点竞争信道成功后， 即退避计数结束后发送一个 RTS帧， 在该 RTS帧的 MAC头中携带了至少两 个 Duration字段或一个 Duration字段但对应多个不同的起始时刻， 该字段用 于设置 NAV, 即该信道预留帧用于预留至少两个非连续的时间段， 以使非目 标站点接收到该信道预留帧后， 把该些 Duration字段所指示的时长设为 NAV 数值， 并保证在所设的至少两个非连续的时间段内部（即 NAV时间内）不进 行任何发送， 即使信道空闲也不可以发送， 具体地与上述图 2类似， 请见上 述图 2。
第二种分步多段预留技术中， 本实施例中所述发送站点在竞争信道成功 后间隔发送至少两个信道预留帧包括五种实现方式： 第一种可实现方式中每 个信道预留帧用于预留一个时间段， 其中， 后一个信道预留帧是在前一个信 道预留帧预留的时间段内发送的， 且预留的各时间段是非连续的； 第二种可 实现方式其中至少有一个信道预留帧用于预留一个时间段， 其中， 至少有一 个信道预留帧是在前一个信道预留帧预留的时间段内发送的且用于预留一个 时间段， 且预留的各时间段是非连续的； 第三种可实现方式其中至少有一个 信道预留帧用于预留一个时间段， 其中， 至少有一个信道预留帧是在前一个 信道预留帧预留的时间段内发送的且用于一次性预留至少两个非连续的时间 段， 且预留的各时间段是非连续的； 第四种可实现方式其中至少有一个信道 预留帧用于一次性预留至少两个非连续的时间段， 其中， 至少有一个信道预 留帧是在前一个信道预留帧预留的时间段内发送的且用于预留一个时间段， 且预留的各时间段是非连续的； 第五种可实现方式其中至少有一个信道预留 帧用于一次性预留至少两个非连续的时间段， 其中， 至少有一个信道预留帧 是在前一个信道预留帧预留的时间段内发送的且用于一次性预留至少两个非 连续的时间段， 且预留的各时间段是非连续的。
针对第二种分步多段预留技术中的第一种可实现方式， 本实施例中， 发 送站点竞争信道成功后，即退避计数结束后，首先发送一个 RTS帧，在该 RTS 帧的 MAC头中携带了一个 Duration字段， 该字段用于设置 NAV, 即该信道 预留帧用于预留一个时间段， 以使非目标站点接收到该信道预留帧后， 把该 Duration字段所指示的时长设为 NAV数值， 并保证在所设的时间段内部（即 NAV时间内） 不进行任何发送。 可选地， 依照上述方法， 可以在该预留时间 内进行下一次预留时间的设置， 由此不断地预留更多的时间段， 具体地与上 述图 3类似， 请见上述图 3。
针对第二种分步多段预留技术中的第四种可实现方式， 其中至少有一个 信道预留帧用于一次性预留至少两个非连续的时间段， 其中， 至少有一个信 道预留帧是在前一个信道预留帧预留的时间段内发送的且用于预留一个时间 段， 而其它的信道预留帧可以用于预留一个时间段或者至少两个非连续时间 段， 本发明在此不作特别限制。
本实施例中， 以第一个信道预留帧用于一次性预留两个非连续的时间段， 第二个信道预留帧是在第一个信道预留帧预留的时间段内发送的用于预留一 个时间段为例， 发送站点竞争信道成功后， 即退避计数结束后， 首先发送一 个 RTS帧， 在该 RTS帧的 MAC头中携带了两个 Duration字段， 该字段用于 设置 NAV, 即该信道预留帧用于预留两个非连续时间段， 以使非目标站点接 收到该信道预留帧后， 把该些 Duration字段所指示的时长设为 NAV数值， 并 保证在所设的时间段内部（即 NAV时间内）不进行任何发送； 然后， 在该预 留的第二时间内按照上述类似方法进行下一次预留时间的设置， 具体地与上 述图 4类似， 请见上述图 4。
而现有技术中， 通过一次信道竞争只可以预留一段连续的时间段， 对于 一些数据不连续发送的场景中， 每次都需要进行信道竞争， 则竞争开销很大。 在本实施例中， 通过一次信道竞争成功后发送的可用于预留至少两个非连续 时间段的信道预留帧的目的就是为了实现在一些数据不连续发送的场景中经 过一次信道竞争后， 一次可以预留至少两个非连续的时间段， 从而减少竞争 开销。 其中， 数据不连续发送可能会发生在很多场景中， 本实施以下描述中 以周期性业务及上下行通信两种典型场景为例对本实施上述技术方案作进一 步地解释说明。
对于周期性业务场景中， 进一步地， 在所述发送站点发送信道预留帧之 前， 还可包括：
所述发送站点根据待发送业务数据的周期以及各周期内发送的数据量， 确定各周期内所需预留的时间段长度， 其中， 所述至少两个非连续的时间段 为与各周期对应的非连续的时间段。
本实施例中， 通过发送站点根据待发送业务数据的周期以及各周期内发 送的数据量， 确定在每个周期内需要预留的时间段长度， 以便于下一步发送 信道预留帧时将上述确定的预留的时间段信息写进信道预留帧， 从而实现预 留多个时间段。
针对第一种同时多段预留技术中， 发送站点在竞争信道成功后发送一个 信道预留帧， 该信道预留帧可以采用如上所述不同的帧格式， 例如还可以为 "周期长度 +周期数目 +起始时间 +每个周期内的预留时间长度"。对于在多接入 点部署的上下行通信业务场景中， 为了减小不同基站子系统 （Base Station Subsystem, 简称 BSS )之间的上下行之间的交叉干扰而将通信时间划分为上 下行阶段。 当同时有上下行数据， 但是数据又不需要占用所有上下行时间段 的时候就会产生上下行发送之间的不连续， 如果上下行分开独立竞争则增加 了竞争开销。
在本实施中， 在获得信道的时候， 可以同时把上下行的时段都进行预留， 例如访问节点 （Access Point, 简称 AP) 通过竞争获得信道的时候可以把上 行的部分时间或下行的部分时间或上下行的部分时间或全部时间进行预留， 即步骤 702中所述至少两个非连续的时间段均用于传输上行数据， 或者均用 于传输下行数据， 或者部分用于传输上行数据且部分用于传输下行数据。
在本实施例中， 由于将通信时间划分为上下行阶段， 即可看做是具有固 定周期， 因此， 可以看做为周期性业务场景中的一种特例。 根据实际情况判 断只需要预留传输上行数据， 或者只需要预留传输下行数据， 或者需要预留 部分传输上行数据和部分传输下行数据， 从而所述信道预留帧中包含相对应 的预留数据信息。
针对第一种同时多段预留技术， 本实施例以只预留两段传输上下行不连 续的时间段为例，发送站点竞争信道成功后，即退避计数结束后发送一个 RTS 帧，在该 RTS帧的 MAC头中携带了两个 Duration字段，该字段用于设置 NAV， 即该信道预留帧分别用于预留上下行通信中两个非连续的时间段， 即下行段 和上行段， 以使非目标站点接收到该信道预留帧后， 把该些 Duration字段所 指示的时长设为 NAV 数值， 并保证在所设的两个非连续的时间段内部 （即 NAV时间内） 不进行任何发送， 即使信道空闲也不可以发送， 具体地与上述 图 5类似， 请见上述图 5。
针对第二种分步多段预留技术中的第一种可实现方式， 本实施例以只预 留两段传输上下行不连续的时间段为例， 发送站点竞争信道成功后， 即退避 计数结束后， 首先发送一个 RTS帧， 在该 RTS帧的 MAC头中携带了一个 Duration字段， 该字段用于设置 NAV, 即该信道预留帧用于预留上行通信中 的一个时间段即上行段， 以使非目标站点接收到该信道预留帧后， 把该 Duration字段所指示的时长设为 NAV数值， 并保证在所设的时间段内部（即 NAV时间内） 不进行任何发送； 然后， 在该预留时间内按照上述方法进行下 行通信预留时间的设置即下行段， 具体地与上述图 6类似， 请见上述图 6。 本实施例中以周期性业务及上下行通信两种典型场景为例对本实施例上 述技术方案作进一步地解释说明， 而对于其它的不连续发送场景亦可以采用 上述方法实现一次竞争后多段预留技术， 在此不再赘述。
在本实施例中的同时多段预留机制中， 为了防止一个站点预留太多的资 源而影响其它站点的通信， 可以增加一些限制条件， 例如限制每次预留的总 时间长度， 或者限制每次预留时间段的数目等。
步骤 703、 所述发送站点接收目标站点发送的所述信道预留帧的响应帧， 所述响应帧用于预留所述至少两个非连续的时间段， 以使接收到所述响应帧 的非目标站点在所述至少两个非连续的时间段内不能发送数据。
本实施例中， 发送站点接收当目标站点正确接收由该发送站点发送的信 道预留帧后回复的响应帧， 该响应帧对应的可以为与 RTS帧对应的 CTS帧、 与 data帧对应的 ACK帧等帧结构， 该响应帧的 MAC头中亦携带 Duration 字段， 该 Duration字段与发送站点发送的信道预留帧的 MAC头中携带的用 于设置 NAV的 Duration字段根据该信道预留帧格式可以相同，或者不同但是 用于预留相同的时间段， 该响应帧可以预留所述至少两个非连续的时间段， 以使接收到该响应帧的非目标站点在所设至少两个非连续的时间段不能发送 数据， 即为目标站点周围的非目标站点设置了 NAV。
步骤 704、 所述发送站点在所述预留至少两个非连续的时间段内与所述 目标站点进行通信。
本实施例中， 发送站点通过发送信道预留帧对非目标站点设置 NAV, 以 使被设置 NAV的站点在 NAV时段内保持静默状态， 由此保证在该预留的至 少两个非连续的时间段内该发送站点与该目标站点可以不受干扰地进行通 信。
一个站点被设置 NAV 之后， 在当前 NAV 结束之前若又收到携带更长
NAV的帧，则更新 NAV;若新收到的 NAV比自身设置的 NAV短则不需更新。
本实施例中以设置 NAV为例来说明预留至少两个非连续时间段的过程， 但本发明并不以此为限。
本实施例， 发送站点通过发送用于预留至少两个非连续时间段的信道预 留帧， 从而实现了在一些数据不连续发送的场景中可经过一次信道竞争而灵 活地预留多段不连续时间段的信道预留， 节省了竞争开销， 同时节省信道资 源， 且以便于发送站点在预留的多段不连续时间段内与目标站点进行通信。
图 8为本发明信息发送方法实施例三的流程示意图， 如图 8所示， 本实 施的方法可以包括：
步骤 801、 目标站点接收发送站点发送的指示信息； 其中， 所述指示信 息用于指示所述目标站点在至少两个非连续的时间段内不能主动发起数据传 输。
本发明实施例中， 目标站点接收由发送站点发送的用于指示所述目标站 点在至少两个非连续的时间段内不能主动发起数据传输的指示消息， 该指示 消息可以为 RTS帧、 CTS-to-self帧、 data帧等预留帧。 可选地， 所述指示信 息可以通过一个帧发送， 其中， 所述帧中包含用于指示所述至少两个非连续 时间段的信息； 或者， 所述指示信息通过至少两个帧发送， 其中， 所述至少 两个帧中分别包含用于指示所述至少两个非连续时间段中的至少一个时间段 的信息， 并且所述至少两个帧中的后一个帧是在前一个帧指示的时间段内发 送的。
步骤 802、 所述目标站点在所述至少两个非连续的时间段内接收所述发 送站点发送的数据。
可选地， 所述目标站点在所述至少两个非连续的时间段内接收所述发送 站点发送的数据之前， 还包括：
所述目标站点向所述发送站点回复响应信息， 其中， 所述响应信息用于 指示接收站点在所述至少两个非连续的时间段内不能主动发起数据传输。
具体地， 所述目标站点向所述发送站点回复响应信息， 包括： 若所述指 示信息是通过一个帧发送的， 则所述目标站点向所述发送站点发送一个响应 帧； 或者，
若所述指示信息是通过至少两个帧发送的， 其中， 所述至少两个帧中分 别包含用于指示所述至少两个非连续时间段中的至少一个时间段的信息， 则 所述目标站点向所述发送站点对应地发送至少两个响应帧。
本实施例中，当目标站点正确接收由发送站点通过帧发送的指示信息后， 需要回复响应信息， 该响应信息对应的可以为与 RTS帧对应的 CTS帧、 与 data帧对应的 ACK帧等响应帧， 在该响应帧的 MAC头中亦携带用于设置 NAV的 Duration字段。 该响应帧与上述信道预留帧相对应， 可以为一个或者 多个， 对应地， 若所述指示信息是通过一个帧发送的， 则所述目标站点向所 述发送站点发送一个响应帧， 该响应帧的 MAC头中携带的 Duration字段可 以为多个，即所述响应帧中包含用于指示所述至少两个非连续时间段的信息， 以使接收到该响应帧的接收站点在所设至少两个非连续的时间段内不能主动 发送数据； 若所述指示信息是通过至少两个帧发送的， 则所述目标站点向所 述发送站点对应地发送至少两个响应帧， 该响应帧的 MAC 头中携带的 Duration 字段可以为一个或者多个， 以使接收到该响应帧的接收站点在所设 至少两个非连续的时间段内不能主动发送数据， 该接收站点为除发送站点之 外的接收到该响应帧的站点。 其中， 该些 Duration字段信息与接收由发送站 点发送的信道预留帧中的 Duration字段信息可以相同， 或者不同但是用于预 留相同的时间段。
可选地， 本实施例中， 目标站点向该发送站点发送的响应帧中包含的预 留时间段信息与目标站点接收发送站点发送的预留帧中的预留时间段信息一 致， 该预留帧的响应帧的帧格式与该预留帧的格式一致， 例如"起始时间 1+ 时长 1+起始时间 2+时长 2+...+起始时间 n+时长 n"， 或者"起始时间 1+终止 时间 1+起始时间 2+终止时间 2+...+起始时间 n+终止时间 n"等格式， 所述 n 可以根据具体的实际情况确定， 其中的时间信息根据实际应用情况获得。 进 一步地， 若所述预留帧格式中省略了起始时间， 代表所述起始时间是默认的， 即从当前帧结束开始。
可选地， 本实施例中， 目标站点接收发送站点发送的预留帧后向该发送 站点发送响应帧的方法对应地可以包括同时多段预留及分步多段预留两大类 方法。 其中， 同时多段预留技术可以通过目标站点向该发送站点发送一个用 于指示接收站点在至少两个非连续的时间段内不能主动发起数据传输的响应 帧而实现同时多段预留； 分步多段预留技术可以通过目标站点向该发送站点 间隔发送两个用于指示接收站点在至少两个非连续时间段中的至少一个时间 段内不能主动发起数据传输的响应帧， 其中， 所述至少两个响应帧中的后一 个响应帧是在前一个响应帧指示的时间段内发送的。
针对第一种同时多段预留技术， 图 9为本发明信息发送方法实施例三的 示意图一， 如图 9所示， 本实施例中， 目标站点接收发送站点发送的预留帧 后， 向该发送站点发送该预留帧的响应帧， 该响应帧为与 RTS帧对应的 CTS 帧， 在该 CTS帧的 MAC头中亦携带了至少两个 Duration字段， 该字段用于 设置 NAV, 即该响应帧用于指示接收到该响应帧的站点在所述至少两个非连 续的时间段不能主动发起数据传输， 即接收到该响应帧的站点接收到该响应 帧后， 把该些 Duration字段所指示的时长设为 NAV数值， 并保证在所设至少 两个非连续的时间段内不能发送数据。 该些 Duration字段信息与接收由发送 站点发送的预留帧中的 Duration字段信息可以相同， 或者不同但是用于预留 相同的时间段。
第二种分步多段预留技术中， 图 10为本发明信息发送方法实施例三的示 意图二， 如图 10所示， 本实施例中， 目标站点接收发送站点发送的信道预留 帧后， 首先向该发送站点发送该预留帧的响应帧， 该响应帧为与 RTS帧对应 的 CTS帧， 在该 CTS帧的 MAC头中亦携带了一个 Duration字段， 该字段用 于设置 NAV, 即该响应帧用于预留一个时间段， 以使接收到该响应帧的站把 该 Duration字段所指示的时长设为 NAV数值，并保证在所设的时间段内不能 发送数据； 然后， 在该预留时间内按照上述方法进行下一次预留时间的设置， 依次类推， 不断地预留更多的时间段。 该些 Duration字段信息与接收由发送 站点发送的信道预留帧中的 Duration字段信息可以相同， 或者不同但是用于 预留相同的时间段。
本实施中所述的技术方案可适用于一些数据不连续发送的场景， 即可能 需要预留多段不连续的时间段。 数据不连续发送可能会发生在很多场景中， 本实施以下描述中以周期性业务及上下行通信两种典型场景为例对本实施上 述技术方案作进一步地解释说明。
对于周期性业务场景中， 目标站点向该发送站点发送预留帧的响应帧中 预留时间段信息与目标站点接收发送站点发送的预留帧中的预留时间段信息 一致， 该预留帧的响应帧的帧格式与该预留帧的格式一致， 本发明在此不再 赘述。
对于在多接入点部署的上下行通信业务场景中， 可以把上行的部分时间 或下行的部分时间或上下行的部分时间或全部时间进行预留， 即步骤 802中 所述至少两个非连续的时间段均用于传输上行数据， 或者均用于传输下行数 据， 或者部分用于传输上行数据且部分用于传输下行数据。 一个站点被设置 NAV之后， 在当前 NAN 结束之前若又收到携带更长
NAV的帧， 则更新 NAV; 若新收到的 NAV比自身设置的 NAV短， 则不予理 会。 本实施例， 通过目标站点向发送站点发送用于指示所述目标站点在至少 两个非连续的时间段内不能主动发起数据传输的指示信息， 且在所述至少两 个非连续的时间段内接收所述发送站点发送的数据， 从而实现了在一些数据 不连续发送的场景中灵活地预留多段不连续时间段的信道预留， 节省了信道 资源。
图 11为本发明信息发送方法实施例四的流程示意图， 如图 11所示， 本 实施的方法可以包括：
步骤 1101、 目标站点接收发送站点发送的信道预留帧。
具体地， 包括： 所述目标站点接收发送站点发送的一个信道预留帧； 或 者， 所述目标站点接收发送站点间隔发送的至少两个信道预留帧。
目标站点接收由发送站点发送的用于预留至少两个非连续的时间段的信 道预留帧， 该信道预留帧可以为 RTS帧、 CTS-to-self帧、 data帧等帧结构。
步骤 1102、所述目标站点向所述发送站点发送所述信道预留帧的响应帧， 所述响应帧用于预留至少两个非连续的时间段， 以使接收到所述响应帧的非 目标站点在所述至少两个非连续的时间段内不能发送数据。
具体地， 当所述目标站点接收发送站点发送的一个信道预留帧时， 对应 地， 包括： 所述目标站点向所述发送站点发送所述一个信道预留帧的响应帧， 所述响应帧用于一次性预留至少两个非连续的时间段； 或者， 当所述目标站 点接收发送站点间隔发送的至少两个信道预留帧时， 对应地， 包括： 所述目 标站点向所述发送站点间隔发送所述至少两个信道预留帧的响应帧， 其中至 少有一个响应帧用于预留一个时间段或者一次性预留至少两个非连续的时间 段， 其中， 至少有一个响应帧是在前一个响应帧预留的时间段内发送的且用 于预留一个时间段或者一次性预留至少两个非连续的时间段， 预留的各时间 段是非连续的。
本实施例中， 当目标站点正确接收由发送站点发送的信道预留帧后， 需 要回复响应帧， 该响应帧对应的可以为与 RTS帧对应的 CTS帧、 与 data帧 对应的 ACK帧等帧结构， 在该响应帧的 MAC头中亦携带用于设置 NAV的 Duration 字段。 该响应帧与上述信道预留帧相对应， 可以为一个或者多个， 对应地， 当该响应帧为 1个时， 该响应帧的 MAC头中携带的 Duration字段 可以为多个； 当该响应帧为多个时， 该响应帧的 MAC头中携带的 Duration 字段可以为一个或者多个， 以使接收到该响应帧的目标站点的非目标站点在 所设至少两个非连续的时间段内不能发送数据。 该些 Duration字段信息与接 收由发送站点发送的信道预留帧中的 Duration字段信息可以相同， 或者不同 但是用于预留相同的时间段。
目标站点向该发送站点发送信道预留帧的响应帧中预留时间段信息与目 标站点接收发送站点发送的信道预留帧中的预留时间段信息一致， 该信道预 留帧的响应帧的帧格式与该信道预留帧的格式一致， 例如"起始时间 1+时长 1+起始时间 2+时长 2+...+起始时间 n+时长 n"， 或者"起始时间 1+终止时间 1+起始时间 2+终止时间 2+...+起始时间 n+终止时间 n"等格式， 所述 n可以 根据具体的实际情况确定， 其中的时间信息根据实际应用情况获得。 进一步 地， 若所述信道预留帧格式中省略了起始时间， 代表所述起始时间是默认的， 即从当前帧结束开始。
本实施例中， 目标站点接收发送站点发送的信道预留帧后向该发送站点 发送响应帧预留至少两个非连续时间段的方法可以包括同时多段预留及分步 多段预留两大类方法。 其中， 同时多段预留技术可以通过目标站点向该发送 站点发送一个用于一次性预留至少两个非连续时间段的信道预留帧的响应帧 而实现同时多段预留； 分步多段预留技术可以通过目标站点向该发送站点间 隔发送至少两个信道预留帧的响应帧， 其中至少有一个响应帧用于预留一个 时间段或者一次性预留至少两个非连续的时间段， 其中， 至少有一个响应帧 是在前一个响应帧预留的时间段内发送的且用于预留一个时间段或者一次性 预留至少两个非连续的时间段， 预留的各时间段是非连续的。
针对第一种同时多段预留技术， 本实施例中， 目标站点接收发送站点发 送的信道预留帧后， 向该发送站点发送该信道预留帧的响应帧， 该响应帧为 与 RTS帧对应的 CTS帧，在该 CTS帧的 MAC头中亦携带了至少两个 Duration 字段，该字段用于设置 NAV,即该响应帧用于预留至少两个非连续的时间段， 以使接收到该响应帧的目标站点的非目标站点接收到该响应帧后， 把该些 Duration字段所指示的时长设为 NAV数值， 并保证在所设至少两个非连续的 时间段内不能发送数据。 该些 Duration字段信息与接收由发送站点发送的信 道预留帧中的 Duration字段信息根据该信道预留帧格式可以相同， 或者不同 但是用于预留相同的时间段， 具体地与上述图 9类似， 请见上述图 9。
第二种分步多段预留技术中， 本实施例中所述目标站点向所述发送站点 间隔发送至少两个信道预留帧的响应帧包括五种实现方式： 第一种可实现方 式中每个响应帧用于预留一个时间段， 其中， 后一个响应帧是在前一个响应 帧预留的时间段内发送的， 且预留的各时间段是非连续的； 第二种可实现方 式其中至少有一个响应帧用于预留一个时间段， 其中， 至少有一个响应帧是 在前一个响应帧预留的时间段内发送的且用于预留一个时间段， 且预留的各 时间段是非连续的； 第三种可实现方式其中至少有一个响应帧用于预留一个 时间段， 其中， 至少有一个响应帧是在前一个响应帧预留的时间段内发送的 且用于一次性预留至少两个非连续的时间段，且预留的各时间段是非连续的； 第四种可实现方式其中至少有一个响应帧用于一次性预留至少两个非连续的 时间段， 其中， 至少有一个响应帧是在前一个响应帧预留的时间段内发送的 且用于预留一个时间段， 且预留的各时间段是非连续的； 第五种可实现方式 其中至少有一个响应帧用于一次性预留至少两个非连续的时间段， 其中， 至 少有一个响应帧是在前一个响应帧预留的时间段内发送的且用于一次性预留 至少两个非连续的时间段， 且预留的各时间段是非连续的。
针对第二种分步多段预留技术中的第一种可实现方式， 本实施例中， 目 标站点接收发送站点发送的信道预留帧后， 首先向该发送站点发送该信道预 留帧的响应帧， 该响应帧为与 RTS帧对应的 CTS帧， 在该 CTS帧的 MAC 头中亦携带了一个 Duration字段， 该字段用于设置 NAV, 即该响应帧用于预 留一个时间段， 以使接收到该响应帧的目标站点的非目标站点接收到该响应 帧后， 把该 Duration字段所指示的时长设为 NAV数值， 并保证在所设的时间 段内不能发送数据； 然后， 在该预留时间内按照上述方法进行下一次预留时 间的设置， 依次类推， 不断地预留更多的时间段。 该些 Duration字段信息与 接收由发送站点发送的信道预留帧中的 Duration字段信息根据该信道预留帧 格式可以相同， 或者不同但是用于预留相同的时间段， 具体地与上述图 10类 似， 请见上述图 10。
本实施中所述的技术方案可适用于一些数据不连续发送的场景， 即可能 需要预留多段不连续的时间段。 数据不连续发送可能会发生在很多场景中， 本实施以下描述中以周期性业务及上下行通信两种典型场景为例对本实施上 述技术方案作进一步地解释说明。
对于周期性业务场景中， 目标站点向该发送站点发送信道预留帧的响应 帧中预留时间段信息与目标站点接收发送站点发送的信道预留帧中的预留时 间段信息一致，该信道预留帧的响应帧的帧格式与该信道预留帧的格式一致， 本发明在此不再赘述。
对于在多接入点部署的上下行通信业务场景中， 可以把上行的部分时间 或下行的部分时间或上下行的部分时间或全部时间进行预留， 即步骤 1102中 所述至少两个非连续的时间段均用于传输上行数据， 或者均用于传输下行数 据， 或者部分用于传输上行数据且部分用于传输下行数据。
步骤 1103、 所述目标站点在所述预留至少两个非连续的时间段内与所述 发送站点进行通信。
本实施例中， 通过目标站点接收由发送站点发送的信道预留帧及向该发 送站点回复该信道预留帧的响应帧把发送站点和目标周围所有站点设置 NAV, 被设置 NAV的站点在 NAV时段内保持静默状态， 从而保证在该预留 的至少两个非连续的时间段内该目标站点与该发送站点可以不受干扰地进行 通信。
一个站点被设置 NAV之后， 在当前 NAN 结束之前若又收到携带更长 NAV的帧， 则更新 NAV; 若新收到的 NAV比自身设置的 NAV短， 则不予理 会。 本实施例， 通过目标站点向发送站点发送用于预留至少两个非连续时间 段的响应帧， 从而实现了在一些数据不连续发送的场景中灵活地预留多段不 连续时间段的信道预留， 节省了信道资源， 且以便于目标站点在预留的多段 不连续时间段内与发送站点进行通信。
图 12为本发明信息发送方法实施例五的流程示意图， 如图 12所示， 本 实施例的方法可以包括：
步骤 1201、 发送站点发送指示信息， 其中， 所述指示信息用于指示预留 的时间段。
具体地， 所述预留的时间段为一段连续的时间段或至少两个非连续的时 间段。
本实施例中， 发送站点在竞争信道成功后通过发送指示信息， 该指示信 息可以为 RTS 等预留帧， 以使接收到该预留帧的接收站点将该预留帧中 Duration字段所指示的时长设为 NAV数值，被设置 NAV的站点在 NAV时段 内保持静默状态， 从而以预留向目标站点发送数据的时间段。 可选地， 该信 道预留帧中 Duration字段包含一段连续的时间段信息， 从而以预留一段连续 的时间段； 或者， 该信道预留帧中 Duration字段包含至少两个非连续的时间 段信息， 从而以预留至少两个非连续的时间段。
步骤 1202、 所述发送站点在所述预留的时间段内发送数据。
本实施例中， 发送站点在预留的时间段内可以给目标站点发送数据， 该 预留的时间段可以为一段连续的时间段或者为发送站点经过一次信道竞争成 功后预留的至少两个非连续的时间段。
步骤 1203、 所述发送站点在所述预留的时间段内发送释放信息， 其中， 所述释放信息用于指示接收站点释放所述时间段的剩余时间段中的至少一部 分时间段。
本实施例中， 成功对其它站点进行 NAV设置的站点叫做 TXOP holder, 它拥有 NAV时段内的发送权。一种可能实现方式，当在成功预留的时间段内， 经过部分时间的数据发送后， TXOP holder已经没有更多数据需要发送，但是 在预留时间的后半段的某部分或者某些部分还有数据需要接收 /发送时， 即当 数据不连续发送时， TXOP holder可以在该时间段内发送信道释放信息， 该信 释放信息可以为改进过的 CF-End帧等释放帧，该释放帧中携带用于指示所述 接收到该释放帧的接收站点释放所预留的时间段内剩余时间段中其余某部分 或者某些部分的 NAV设置的时间段信息，即该帧用于指示所述接收站点释放 该预留的时间段内剩余时间段其余某部分或某几个部分的预留资源， 从而允 许其它站点进行信道竞争。 该释放的时间段信息可以根据实际情况的信息获 得， 例如对于周期业务， 可根据哪些周期内需释放多少时间长度等信息确定， 对于上下行业务， 可以根据上下行业务中哪些时间段需释放等信息确定， 对 于一些可以根据已知的统计总结可判断哪些预留时间段需要释放等信息确定 等。 另一种可能的实现方式， 当在成功预留的时间段内， 经过部分时间的数 据发送后， TXOP holder已经将数据发送完毕， 但是还有剩余的预留时间段， 该预留的时间段可以为一连续的时间段， 或者为至少两个非连续的时间段。
TXOP holder可以在数据发送完后发送信道释放帧，用于指示接收到该信道释 放帧的站点释放该预留的时间段内剩余时间段， 从而允许其它站点进行信道 竞争。
本实施例中， 发送站点发送的释放帧的设置格式可以有多种， 例如"释放 起始时间 1+释放时间长度 1+释放起始时间 2+释放时间长度 2+...+释放起始 时间 n+释放时间长度 n"或者"释放起始时间 1+释放终止时间 1+释放起始时间 2+释放终止时间 2+...+释放起始时间 n+释放终止时间 n"等格式，所述 n可以 根据具体的实际情况确定， 其中的时间信息根据实际应用情况获得。 进一步 地， 若所述释放帧格式中省略了起始时间， 代表所述起始时间是默认的， 即 从当前帧结束开始。
图 13为本发明信息发送方法实施例五的示意图一， 如图 13所示， 以该 释放帧释放该预留的一段连续时间段的剩余时间段中的 2部分时间段为例， 发送站点在退避计数结束后发送 RTS预留帧预留的一段连续的时间段内发送 数据， 当经过部分时间后， 该发送站点已经没有更多数据需要发送， 但是在 该段预留时间的后半段某两部分还有数据需要接收 /发送的时候， 该站点可以 在该预留的一段连续的时间段内发送 CF-End帧，该信道释放帧中携带用于释 放该预留的一段连续时间段的剩余时间段中其余两部分的 NAV 设置的时间 段信息， 即该信道释放帧用于指示所述接收到该释放帧的站点释放该预留的 一段连续时间段的剩余时间段的其余两部分的预留资源即释放段 1和释放段 2， 从而允许其它站点进行信道竞争。
图 14为本发明信息发送方法实施例五的示意图二， 如图 14所示， 以该 信道释放帧释放预留的五个非连续时间段中第二个与第三个非连续时间段中 部分时间段为例， 当发送站点在退避计数结束后发送 RTS信道预留帧预留的 非连续的第一时间段和第二时间段内发送数据后， 该发送站点在第二时间段 的中间部分和第三时间段的中间部分已经没有更多数据需要发送， 但是在该 预留的第二个时间段后面部分、 第三时间段前面和后面部分、 第四时间段和 第五时间段内还有数据需要接收 /发送的时候， 该站点可以在该预留的第二时 间段内发送 CF-End帧，该信道释放帧中携带用于释放该预留的第二时间段和 第三时间段中间部分的 NAV设置的时间段信息，即该信道释放帧用于释放该 预留的第二时间段和第三时间段中间部分的预留资源即释放段 1和释放段 2， 从而允许其它站点进行信道竞争。
以上下行通信为例， 若接入点一次性将上行和下行的时间段都进行了预 留， 但是下行数据较少， 不需要占用整个下行时段， 当下行数据发送完毕后， 可以发送信道释放帧， 该信道释放帧中包含需要释放的下行时段信息， 从而 释放下行时段的剩余时间给别的接入点 /站点使用。
本实施例中， 发送站点通过发送指示接收站点释放所述时间段的剩余时 间段中的至少一部分时间段的释放信息， 从而实现了在一些数据不连续发送 的场景中灵活地释放剩余信道预留资源， 节省信道资源， 提高了系统的利用 效率。
图 15为本发明信息发送方法实施例六的流程示意图， 如图 15所示， 本 实施例的方法可以包括：
步骤 1501、 发送站点在竞争信道成功后发送信道预留帧， 以预留向目标 站点发送数据的时间段。
具体地， 包括： 所述发送站点在竞争信道成功后发送信道预留帧， 以预 留一段连续的时间段； 或者， 所述发送站点在竞争信道成功后发送信道预留 帧， 以预留至少两个非连续的时间段。
本实施例中， 发送站点在竞争信道成功后通过以发送的形式发送信道预 留帧， 以使接收到该信道预留帧的非目标站点将该信道预留帧中 Duration字 段所指示的时长设为 NAV数值，被设置 NAV的站点在 NAV时段内保持静默 状态， 从而以预留向目标站点发送数据的时间段。 可选地， 该信道预留帧中 Duration 字段包含一段连续的时间段信息， 从而以预留一段连续的时间段； 或者， 该信道预留帧中 Duration字段包含至少两个非连续的时间段信息， 从 而以预留至少两个非连续的时间段。
步骤 1502、 所述发送站点在预留的时间段内发送数据。
具体地， 当所述发送站点在竞争信道成功后发送信道预留帧， 以预留一 段连续的时间段时， 对应地， 包括： 所述发送站点在竞争信道成功后预留的 所述一段连续的时间段内发送数据； 或者， 当所述发送站点在竞争信道成功 后发送信道预留帧， 以预留至少两个非连续的时间段时， 对应地， 包括： 所 述发送站点在竞争信道成功后预留的所述至少两个非连续的时间段内发送数 据。
本实施例中， 发送站点在预留的时间段内发送数据， 该预留的时间段可 以为一段连续的时间段或者为发送站点经过一次信道竞争成功后预留的至少 两个非连续的时间段。
步骤 1503、 所述发送站点在所述时间段内发送数据的过程中发送信道释 放帧， 所述信道释放帧用于释放剩余时间段中的至少一部分时间段。
具体地， 当所述发送站点在竞争信道成功后发送信道预留帧， 以预留一 段连续的时间段， 相应地， 所述发送站点在竞争信道成功后预留的所述一段 连续的时间段内发送数据时， 对应地， 包括： 所述发送站点在所述预留的一 段连续的时间段内发送数据的过程中发送信道释放帧， 所述信道释放帧用于 释放所述预留的一段连续的时间段的剩余时间段中的至少一部分时间段； 或 者， 当所述发送站点在竞争信道成功后发送信道预留帧， 以预留至少两个非 连续的时间段， 相应地， 所述发送站点在竞争信道成功后预留的所述至少两 个非连续的时间段内发送数据时， 对应地， 包括： 所述发送站点在所述时间 段内发送数据的过程中发送信道释放帧， 所述信道释放帧用于释放所述预留 的至少两个非连续的时间段的剩余时间段中的至少一部分时间段。
本实施例中， 成功对其它站点进行 NAV设置的站点叫做 TXOP holder, 它拥有 NAV时段内的发送权。一种可能实现方式，当在成功预留的时间段内， 经过部分时间的数据发送后， TXOP holder已经没有更多数据需要发送，但是 在预留时间的后半段的某部分或者某些部分还有数据需要接收 /发送时， 即当 数据不连续发送时， TXOP holder可以在该时间段内发送信道释放帧， 该信道 释放帧可以为改进过的 CF-End帧，该信道释放帧中携带用于结束该预留的时 间段内剩余时间段中其余某部分或者某些部分的 NAV设置的时间段信息，即 该信道释放帧用于释放该预留的时间段内剩余时间段其余某部分或某几个部 分的预留资源， 从而允许其它站点进行信道竞争。 该释放的时间段信息可以 根据实际情况的信息获得， 例如对于周期业务， 可根据哪些周期内需释放多 少时间长度等信息确定， 对于上下行业务， 可以根据上下行业务中哪些时间 段需释放等信息确定， 对于一些可以根据已知的统计总结可判断哪些预留时 间段需要释放等信息确定等。 另一种可能的实现方式， 当在成功预留的时间 段内， 经过部分时间的数据发送后， TXOP holder已经将数据发送完毕， 但是 还有剩余的预留时间段， 该预留的时间段可以为一连续的时间段， 或者为至 少两个非连续的时间段。 TXOP holder可以在数据发送完后发送信道释放帧， 用于释放该预留的时间段内剩余时间段， 从而允许其它站点进行信道竞争。
本实施例中， 发送站点发送的信道释放帧的设置格式可以有多种， 例如 "释放起始时间 1+释放时间长度 1+释放起始时间 2+释放时间长度 2+...+释放 起始时间 n+释放时间长度 n"或者"释放起始时间 1+释放终止时间 1+释放起始 时间 2+释放终止时间 2+...+释放起始时间 n+释放终止时间 n"等格式，所述 n 可以根据具体的实际情况确定， 其中的时间信息根据实际应用情况获得。 进 一步地， 若所述信道释放帧格式中省略了起始时间， 代表所述起始时间是默 认的， 即从当前帧结束开始。
本发明实施例中， 以该信道释放帧释放该预留的一段连续时间段的剩余 时间段中的 2部分时间段为例， 发送站点在退避计数结束后发送 RTS信道预 留帧预留的一段连续的时间段内发送数据， 当经过部分时间后， 该发送站点 已经没有更多数据需要发送， 但是在该段预留时间的后半段某两部分还有数 据需要接收 /发送的时候， 该站点可以在该预留的一段连续的时间段内发送 CF-End帧， 该信道释放帧中携带用于结束该预留的一段连续时间段的剩余时 间段中其余两部分的 NAV设置的时间段信息，即该信道释放帧用于释放该预 留的一段连续时间段的剩余时间段的其余两部分的预留资源即释放段 1和释 放段 2， 从而允许其它站点进行信道竞争， 具体地与上述图 13类似， 请见上 述图 13。
本发明实施例中， 以该信道释放帧释放预留的五个非连续时间段中第二 个与第三个非连续时间段中部分时间段为例， 当发送站点在退避计数结束后 发送 RTS 信道预留帧预留的非连续的第一时间段和第二时间段内发送数据 后， 该发送站点在第二时间段的中间部分和第三时间段的中间部分已经没有 更多数据需要发送， 但是在该预留的第二个时间段后面部分、 第三时间段前 面和后面部分、 第四时间段和第五时间段内还有数据需要接收 /发送的时候， 该站点可以在该预留的第二时间段内发送 CF-End帧，该信道释放帧中携带用 于结束该预留的第二时间段和第三时间段中间部分的 NAV 设置的时间段信 息， 即该信道释放帧用于释放该预留的第二时间段和第三时间段中间部分的 预留资源即释放段 1和释放段 2， 从而允许其它站点进行信道竞争， 具体地 与上述图 14类似， 请见上述图 14。
以上下行通信为例， 若接入点一次性将上行和下行的时间段都进行了预 留， 但是下行数据较少， 不需要占用整个下行时段， 当下行数据发送完毕后， 可以发送信道释放帧， 该信道释放帧中包含需要释放的下行时段信息， 从而 释放下行时段的剩余时间给别的接入点 /站点使用。
本实施例中， 发送站点通过发送用于释放剩余时间段中的至少一部分时 间段的信道释放帧， 从而实现了在一些数据不连续发送的场景中灵活地释放 剩余信道预留资源， 节省信道资源， 提高了系统的利用效率。
图 16为本发明信息发送方法实施例七的流程示意图， 如图 16所示， 本 实施例的方法可以包括：
步骤 1601、 接收站点接收发送站点发送的指示信息， 其中， 所述指示信 息用于指示预留的时间段。
具体地， 所述预留的时间段为一段连续的时间段或至少两个非连续的时 间段。
本实施例中， 接收站点接收由发送站点发送的指示信息， 其中， 该接收 站点为接收到所述指示信息的所有接收站点中除了目标站点之外的接收站 点， 该指示信息可以为 RTS等预留帧， 所述接收站点将该预留帧中 Duration 字段所指示的时长设为 NAV数值， 即在 NAV时段内保持静默状态， 从而以 便于发送站点在所述时段内不受干扰地向目标站点发送数据。
步骤 1602、 所述接收站点在所述预留的时间段内接收所述发送站点发送 的释放信息， 其中， 所述释放信息用于指示所述接收站点释放所述时间段的 剩余时间段中的至少一部分时间段。
本实施例中， 接收站点在预留的时间段内接收由发送站点发送的释放信 息，该释放信息可以为改进过的 CF-End帧等释放帧， 该信道释放帧中携带用 于释放该预留的时间段内剩余时间段中某部分或者某些部分的 NAN 设置的 时间段信息， 即该释放帧用于指示所述接收站点释放该预留的时间段内剩余 时间段的某部分或某几个部分的预留资源。 具体地， 该预留的时间段可以为 一段连续时间段或者至少两个非连续时间段， 对应地， 该释放帧中分别携带 用于释放该预留的一段连续时间段内或者该预留的至少两个非连续时间段内 剩余时间段中某部分或者某些部分的 NAN设置的时间段信息。 进一步地， 所述接收站点根据该释放帧中携带的用于释放该预留的时间 段内剩余时间段中某部分或者某些部分的 NAN设置的时间段信息，释放该预 留的时间段内剩余时间段中相应的某部分或某几个部分的预留资源， 从而该 接收站点可以在该些释放的时间段内进行信道竞争。 其中， 该预留的时间段 可以为预留的一段连续时间段或者预留的至少两个非连续时间段。
本实施例中， 通过接收站点在所述预留的时间段内接收所述发送站点发 送的用于指示所述接收站点释放所述时间段的剩余时间段中至少一部分时间 段的释放信息， 从而实现了在一些数据不连续发送的场景中灵活地释放剩余 预留资源， 节省信道资源， 提高了系统的利用效率。
图 17为本发明信息发送方法实施例八的流程示意图， 如图 17所示， 本 实施例的方法可以包括：
步骤 1701、接收站点在预留的时间段内接收发送站点发送的信道释放帧， 所述信道释放帧用于释放剩余时间段中的至少一部分时间段。
具体地， 包括： 所述接收站点在预留的一段连续的时间段内接收发送站 点发送的信道释放帧； 或者， 所述接收站点在预留的至少两个非连续的时间 段内接收发送站点发送的信道释放帧。
本实施例中， 接收站点在预留的时间段内接收由发送站点发送的信道释 放帧，该信道释放帧可以为改进过的 CF-End帧，该信道释放帧中携带用于结 束该预留的时间段内剩余时间段中某部分或者某些部分的 NAN 设置的时间 段信息， 即该信道释放帧用于释放该预留的时间段内剩余时间段的某部分或 某几个部分的预留资源。 具体地， 该预留的时间段可以为一段连续时间段或 者至少两个非连续时间段， 对应地， 该信道预留帧中分别携带用于结束该预 留的一段连续时间段内或者该预留的至少两个非连续时间段内剩余时间段中 某部分或者某些部分的 NAN设置的时间段信息。
步骤 1702、 所述接收站点根据所述信道释放帧释放所述剩余时间段中的 至少一部分时间段。
具体地， 当所述接收站点在预留的一段连续的时间段内接收发送站点发 送的信道释放帧时， 对应地， 包括： 所述接收站点根据所述信道释放帧释放 所述预留的一段连续的时间段的剩余时间段中的至少一部分时间段； 或者， 当所述接收站点在预留的至少两个非连续的时间段内接收发送站点发送的信 道释放帧时， 对应地， 包括： 所述接收站点根据所述信道释放帧释放所述预 留的至少两个非连续的时间段的剩余时间段中至少一部分时间段。
接收站点根据该信道释放帧中携带的用于结束该预留的时间段内剩余时 间段中某部分或者某些部分的 NAN设置的时间段信息，释放该预留的时间段 内剩余时间段中相应的某部分或某几个部分的预留资源， 从而该接收站点可 以在该些释放的时间段内进行信道竞争。 该预留的时间段可以为预留的一段 连续时间段或者预留的至少两个非连续时间段。
本实施例中， 通过接收站点根据由发送站点发送的用于释放预留时间段 的剩余时间段中的至少一部分时间段的信道释放帧， 释放预留时间段中相应 的时间段， 从而实现了在一些数据不连续发送的场景中灵活地释放剩余预留 资源， 节省信道资源， 提高了系统的利用效率。
图 18为本发明发送站点实施例一的结构示意图。 如图 18所示， 本实施 例提供发送站点 180包括： 竞争模块 1801、指示模块 1802及发送模块 1803。
其中， 竞争模块 1801用于竞争信道；
指示模块 1802用于在竞争信道成功后发送指示信息， 其中， 所述指示信 息用于指示接收站点在至少两个非连续的时间段内不能主动发起数据传输； 发送模块 1803用于在所述至少两个非连续的时间段内发送数据。
可选地， 所述发送站点 180还包括：
接收模块用于接收目标站点回复的响应信息， 其中， 所述响应信息用于 指示接收站点在所述至少两个非连续的时间段内不能主动发起数据传输。
可选地， 所述指示信息通过一个帧发送， 其中， 所述帧中包含用于指示 所述至少两个非连续时间段的信息； 或者，
所述指示信息通过至少两个帧发送， 其中， 所述至少两个帧中分别包含 用于指示所述至少两个非连续时间段中的至少一个时间段的信息， 并且所述 至少两个帧中的后一个帧是在前一个帧指示的时间段内发送的。
可选地， 所述发送站点 180还包括：
确定模块用于根据待发送数据的周期以及各周期内发送的数据量， 确定 所述至少两个非连续的时间段的长度。
可选地， 所述至少两个非连续的时间段均用于传输上行数据， 或者均用 于传输下行数据， 或者部分用于传输上行数据且部分用于传输下行数据。 本实施例的发送站点， 可以用于信息发送方法实施例一的技术方案， 其 实现原理和技术效果类似， 此处不再赘述。
图 19为本发明发送站点实施例二的结构示意图。 如图 19所示， 本实施 例提供的发送站点 190包括处理器 1901和存储器 1902。 发送站点 190还可 以包括发射器 1903及接收器 1904。 其中， 发射器 1903及接收器 1904可以 和处理器 1901相连。 其中， 发射器 1903用于发送数据或信息， 接收器 1904 用于接收数据或信息， 存储器 1901用于存储执行指令， 当发送站点 190运行 时， 处理器 1901与存储器 1902之间通信， 处理器 1901调用存储器中的执行 指令， 用于执行上述信息发送方法实施例一中的操作。
本实施例的发送站点，可以用于执行本发明上述信息发送方法实施例一的 技术方案， 其实现原理和技术效果类似， 此处不再赘述。
图 20为本发明发送站点实施例三的结构示意图。 如图 20所示， 本实施 例提供发送站点 200包括： 竞争模块 2001、 发送模块 2002、 接收模块 2003 及通信模块 2004。
其中， 竞争模块 2001用于竞争信道；
发送模块 2002用于在竞争信道成功后发送信道预留帧，所述信道预留帧 用于预留至少两个非连续的时间段， 以使接收到所述信道预留帧的非目标站 点在所述至少两个非连续的时间段内不能发送数据；
接收模块 2003用于接收目标站点发送的所述信道预留帧的响应帧，所述 响应帧用于预留所述至少两个非连续的时间段， 以使接收到所述响应帧的非 目标站点在所述至少两个非连续的时间段内不能发送数据；
通信模块 2004 用于在所述预留至少两个非连续的时间段内与所述目标 站点进行通信。
可选地， 发送模块 2002 具体用于在竞争信道成功后发送一个信道预留 帧， 所述信道预留帧用于预留至少两个非连续的时间段；
或者，
在竞争信道成功后间隔发送至少两个信道预留帧， 其中至少有一个信道 预留帧用于预留一个时间段或者一次性预留至少两个非连续的时间段，其中， 至少有一个信道预留帧是在前一个信道预留帧预留的时间段内发送的且用于 预留一个时间段或者一次性预留至少两个非连续的时间段， 预留的各时间段 是非连续的。
可选地， 还包括： 确定模块， 用于根据待发送业务数据的周期以及各周 期内发送的数据量， 确定各周期内所需预留的时间段长度， 其中， 所述至少 两个非连续的时间段为与各周期对应的非连续的时间段。
可选地， 所述至少两个非连续的时间段均用于传输上行数据， 或者均用 于传输下行数据， 或者部分用于传输上行数据且部分用于传输下行数据。
本实施例的发送站点， 可以用于信息发送方法实施例二的技术方案， 其 实现原理和技术效果类似， 此处不再赘述。
图 21为本发明发送站点实施例四的结构示意图。 如图 21所示， 本实施 例提供的发送站点 210包括处理器 2101和存储器 2102。 发送站点 210还可 以包括发射器 2103及接收器 2104。 其中， 发射器 2103及接收器 2104可以 和处理器 2101相连。 其中， 发射器 2103用于发送数据或信息， 接收器 2104 用于接收数据或信息， 存储器 2101用于存储执行指令， 当发送站点 210运行 时， 处理器 2101与存储器 2102之间通信， 处理器 2101调用存储器中的执行 指令， 用于执行上述信息发送方法实施例二中的操作。
本实施例的发送站点，可以用于执行本发明上述信息发送方法实施例二的 技术方案， 其实现原理和技术效果类似， 此处不再赘述。
图 22为本发明目标站点实施例一的结构示意图。 如图 22所示， 本实施 例提供目标站点 220包括： 第一接收模块 2201及第二接收模块 2202。
其中， 第一接收模块 2201用于接收发送站点发送的指示信息； 其中， 所 述指示信息用于指示所述目标站点在至少两个非连续的时间段内不能主动发 起数据传输；
第二接收模块 2202 用于在所述至少两个非连续的时间段内接收所述发 送站点发送的数据。
可选地， 所述目标站点 220， 还包括：
回复模块用于向所述发送站点回复响应信息， 其中， 所述响应信息用于 指示接收站点在所述至少两个非连续的时间段内不能主动发起数据传输。
可选地， 所述回复模块具体用于： 若所述指示信息是通过一个帧发送的， 则向所述发送站点发送一个响应帧； 或者，
若所述指示信息是通过至少两个帧发送的， 其中， 所述至少两个帧中分 别包含用于指示所述至少两个非连续时间段中的至少一个时间段的信息， 则 向所述发送站点对应地发送至少两个响应帧。
可选地， 所述至少两个非连续的时间段均用于传输上行数据， 或者均用 于传输下行数据， 或者部分用于传输上行数据且部分用于传输下行数据。
本实施例的目标站点， 可以用于信息发送方法实施例三的技术方案， 其 实现原理和技术效果类似， 此处不再赘述。
图 23为本发明目标站点实施例二的结构示意图。 如图 23所示， 本实施 例提供的目标站点 230包括处理器 2301和存储器 2302。 目标站点 230还可 以包括发射器 2303及接收器 2304。 其中， 发射器 2303及接收器 2304可以 和处理器 2301相连。 其中， 发射器 2303用于发送数据或信息， 接收器 2304 用于接收数据或信息， 存储器 2301用于存储执行指令， 当目标站点 230运行 时， 处理器 2301与存储器 2302之间通信， 处理器 2301调用存储器中的执行 指令， 用于执行上述信息发送方法实施例三中的操作。
本实施例的目标站点，可以用于执行本发明上述信息发送方法实施例三的 技术方案， 其实现原理和技术效果类似， 此处不再赘述。
图 24为本发明目标站点实施例三的结构示意图。 如图 24所示， 本实施 例提供目标站点 240包括： 接收模块 2401、发送模块 2402及通信模块 2403。
其中， 接收模块 2401用于接收发送站点发送的信道预留帧；
发送模块 2402用于向所述发送站点发送所述信道预留帧的响应帧，所述 响应帧用于预留至少两个非连续的时间段， 以使接收到所述响应帧的非目标 站点在所述至少两个非连续的时间段内不能发送数据；
通信模块 2403 用于在所述预留至少两个非连续的时间段内与所述发送 站点进行通信。
可选地， 接收模块 2401具体用于接收发送站点发送的一个信道预留帧； 相应地，发送模块 2402具体用于向所述发送站点发送所述一个信道预留 帧的响应帧， 所述响应帧用于一次性预留至少两个非连续的时间段；
或者，接收模块 2401具体用于接收发送站点间隔发送的至少两个信道预 留帧；
相应地，发送模块 2402具体用于向所述发送站点间隔发送所述至少两个 信道预留帧的响应帧， 其中至少有一个响应帧用于预留一个时间段或者一次 性预留至少两个非连续的时间段， 其中， 至少有一个响应帧是在前一个响应 帧预留的时间段内发送的且用于预留一个时间段或者一次性预留至少两个非 连续的时间段， 预留的各时间段是非连续的。
可选地， 所述至少两个非连续的时间段均用于传输上行数据， 或者均用 于传输下行数据， 或者部分用于传输上行数据且部分用于传输下行数据。
本实施例的目标站点， 可以用于信息发送方法实施例四的技术方案， 其 实现原理和技术效果类似， 此处不再赘述。
图 25为本发明目标站点实施例四的结构示意图。 如图 25所示， 本实施 例提供的目标站点 250包括处理器 2501和存储器 2502。 目标站点 250还可 以包括发射器 2503及接收器 2504。 其中， 发射器 2503及接收器 2504可以 和处理器 2501相连。 其中， 发射器 2503用于发送数据或信息， 接收器 2504 用于接收数据或信息， 存储器 2501用于存储执行指令， 当目标站点 250运行 时， 处理器 2501与存储器 2502之间通信， 处理器 2501调用存储器中的执行 指令， 用于执行上述信息发送方法实施例四中的操作。
本实施例的目标站点，可以用于执行本发明上述信息发送方法实施例四的 技术方案， 其实现原理和技术效果类似， 此处不再赘述。
图 26为本发明发送站点实施例五的结构示意图。 如图 26所示， 本实施 例提供的发送站点 260包括： 指示模块 2601、 第一发送模块 2602及第二发 送模块 2603。
其中， 指示模块 2601用于发送指示信息， 其中， 所述指示信息用于指示 预留的时间段；
第一发送模块 2602用于在所述预留的时间段内发送数据；
第二发送模块 2603用于在所述预留的时间段内发送释放信息， 其中， 所 述释放信息用于指示接收站点释放所述时间段的剩余时间段中的至少一部分 时间段。
可选地， 所述预留的时间段为一段连续的时间段或至少两个非连续的时 间段。
本实施例的发送站点， 可以用于信息发送方法实施例五的技术方案， 其 实现原理和技术效果类似， 此处不再赘述。
图 27为本发明发送站点实施例六的结构示意图。 如图 27所示， 本实施 例提供的发送站点 270包括处理器 2701和存储器 2702。 发送站点 270还可 以包括发射器 2703及接收器 2704。 其中， 发射器 2703及接收器 2704可以 和处理器 2701相连。 其中， 发射器 2703用于发送数据或信息， 接收器 2704 用于接收数据或信息， 存储器 2701用于存储执行指令， 当发送站点 270运行 时， 处理器 2701与存储器 2702之间通信， 处理器 2701调用存储器中的执行 指令， 用于执行上述信息发送方法实施例五中的操作。
本实施例的发送站点，可以用于执行本发明上述信息发送方法实施例五的 技术方案， 其实现原理和技术效果类似， 此处不再赘述。
图 28为本发明发送站点实施例七的结构示意图。 如图 28所示， 本实施 例提供的发送站点 280包括： 第一发送模块 2801、 第二发送模块 2802及第 三发送模块 2803。
其中， 第一发送模块 2801用于在竞争信道成功后发送信道预留帧， 以预 留向目标站点发送数据的时间段；
第二发送模块 2802用于在预留的时间段内发送数据；
第三发送模块 2803 用于在所述时间段内发送数据的过程中发送信道释 放帧， 所述信道释放帧用于释放剩余时间段中的至少一部分时间段。
可选地， 第一发送模块 2801 具体用于在竞争信道成功后发送信道预留 帧， 以预留一段连续的时间段；
相应地，第二发送模块 2802具体用于在竞争信道成功后预留的所述一段 连续的时间段内发送数据；
相应地，第三发送模块 2803具体用于在所述预留的一段连续的时间段内 发送数据的过程中发送信道释放帧， 所述信道释放帧用于释放所述预留的一 段连续的时间段的剩余时间段中的至少一部分时间段；
或者，
第一发送模块 2801具体用于在竞争信道成功后发送信道预留帧， 以预留 至少两个非连续的时间段；
相应地，第二发送模块 2802具体用于在竞争信道成功后预留的所述至少 两个非连续的时间段内发送数据；
相应地，第三发送模块 2803具体用于在所述时间段内发送数据的过程中 发送信道释放帧， 所述信道释放帧用于释放所述预留的至少两个非连续的时 间段的剩余时间段中的至少一部分时间段。
本实施例的发送站点， 可以用于信息发送方法实施例六的技术方案， 其 实现原理和技术效果类似， 此处不再赘述。
图 29为本发明发送站点实施例八的结构示意图。 如图 29所示， 本实施 例提供的发送站点 290包括处理器 2901和存储器 2902。 发送站点 290还可 以包括发射器 2903及接收器 2904。 其中， 发射器 2903及接收器 2904可以 和处理器 2901相连。 其中， 发射器 2903用于发送数据或信息， 接收器 2904 用于接收数据或信息， 存储器 2901用于存储执行指令， 当发送站点 290运行 时， 处理器 2901与存储器 2902之间通信， 处理器 2901调用存储器中的执行 指令， 用于执行上述信息发送方法实施例六中的操作。
本实施例的发送站点，可以用于执行本发明上述信息发送方法实施例六的 技术方案， 其实现原理和技术效果类似， 此处不再赘述。
图 30为本发明接收站点实施例一的结构示意图。 如图 30所示， 本实施 例提供的接收站点 300包括： 第一接收模块 3001及第二接收模块 3002。
其中， 第一接收模块 3001用于接收发送站点发送的指示信息， 其中， 所 述指示信息用于指示预留的时间段；
第二接收模块 3002 用于在所述预留的时间段内接收所述发送站点发送 的释放信息， 其中， 所述释放信息用于指示所述接收站点释放所述时间段的 剩余时间段中的至少一部分时间段。
可选地， 所述预留的时间段为一段连续的时间段或至少两个非连续的时 间段。
本实施例的接收站点， 可以用于信息发送方法实施例七的技术方案， 其 实现原理和技术效果类似， 此处不再赘述。
图 31为本发明接收站点实施例二的结构示意图。 如图 31所示， 本实施 例提供的接收站点 310包括处理器 3101和存储器 3102。 接收站点 310还可 以包括发射器 3103及接收器 3104。 其中， 发射器 3103及接收器 3104可以 和处理器 3101相连。 其中， 发射器 3103用于发送数据或信息， 接收器 3104 用于接收数据或信息， 存储器 3101用于存储执行指令， 当接收站点 310运行 时， 处理器 3101与存储器 3102之间通信， 处理器 3101调用存储器中的执行 指令， 用于执行上述信息发送方法实施例七中的操作。 本实施例的接收站点，可以用于执行本发明上述信息发送方法实施例七的 技术方案， 其实现原理和技术效果类似， 此处不再赘述。
图 32为本发明接收站点实施例三的结构示意图。 如图 32所示， 本实施 例提供的接收站点 320包括： 接收模块 3201及释放模块 3202。
其中，接收模块 3201用于在预留的时间段内接收发送站点发送的信道释 放帧， 所述信道释放帧用于释放剩余时间段中的至少一部分时间段；
释放模块 3202 用于根据所述信道释放帧释放所述剩余时间段中的至少 一部分时间段。
可选地，接收模块 3201具体用于在预留的一段连续的时间段内接收发送 站点发送的信道释放帧；
相应地，释放模块具体 3202用于根据所述信道释放帧释放所述预留的一 段连续的时间段的剩余时间段中的至少一部分时间段；
或者，
接收模块 3201 具体用于在预留的至少两个非连续的时间段内接收发送 站点发送的信道释放帧；
相应地，释放模块 3202具体用于根据所述信道释放帧释放所述预留的至 少两个非连续的时间段的剩余时间段中至少一部分时间段。
本实施例的接收站点， 可以用于信息发送方法实施例八的技术方案， 其 实现原理和技术效果类似， 此处不再赘述。
图 33为本发明接收站点实施例四的结构示意图。 如图 33所示， 本实施 例提供的接收站点 330包括处理器 3301和存储器 3302。 接收站点 330还可 以包括发射器 3303及接收器 3304。 其中， 发射器 3303及接收器 3304可以 和处理器 3301相连。 其中， 发射器 3303用于发送数据或信息， 接收器 3304 用于接收数据或信息， 存储器 3301用于存储执行指令， 当接收站点 330运行 时， 处理器 3301与存储器 3302之间通信， 处理器 3301调用存储器中的执行 指令， 用于执行上述信息发送方法实施例八中的操作。
本实施例的接收站点，可以用于执行本发明上述信息发送方法实施例八的 技术方案， 其实现原理和技术效果类似， 此处不再赘述。
本领域普通技术人员可以理解： 实现上述各方法实施例的全部或部分步 骤可以通过程序指令相关的硬件来完成。 前述的程序可以存储于一计算机可 读取存储介质中。 该程序在执行时， 执行包括上述各方法实施例的步骤； 而 前述的存储介质包括： ROM、 RAM,磁碟或者光盘等各种可以存储程序代码 的介质。
最后应说明的是： 以上各实施例仅用以说明本发明的技术方案， 而非对 其限制； 尽管参照前述各实施例对本发明进行了详细的说明， 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， 或者对其中部分或者全部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发明各实施例技术方案的范围。

Claims

权 利 要 求 书
1、 一种信息发送方法， 其特征在于， 包括：
发送站点竞争信道；
所述发送站点在竞争信道成功后发送指示信息， 其中， 所述指示信息用 于指示接收站点在至少两个非连续的时间段内不能主动发起数据传输；
所述发送站点在所述至少两个非连续的时间段内发送数据。
2、 根据权利要求 1所述的方法， 其特征在于， 所述发送站点在所述至少 两个非连续的时间段内发送数据之前， 还包括：
所述发送站点接收目标站点回复的响应信息， 其中， 所述响应信息用于 指示接收站点在所述至少两个非连续的时间段内不能主动发起数据传输。
3、 根据权利要求 1或 2所述的方法， 其特征在于， 所述指示信息通过一 个帧发送， 其中， 所述帧中包含用于指示所述至少两个非连续时间段的信息; 或者，
所述指示信息通过至少两个帧发送， 其中， 所述至少两个帧中分别包含 用于指示所述至少两个非连续时间段中的至少一个时间段的信息， 并且所述 至少两个帧中的后一个帧是在前一个帧指示的时间段内发送的。
4、 根据权利要求 1-3中任一项所述的方法， 其特征在于， 所述发送站点 发送所述指示信息之前， 还包括：
所述发送站点根据待发送数据的周期以及各周期内发送的数据量， 确定 所述至少两个非连续的时间段的长度。
5、 根据权利要求 1-4中任一项所述的方法， 其特征在于， 所述至少两个 非连续的时间段均用于传输上行数据， 或者均用于传输下行数据， 或者部分 用于传输上行数据且部分用于传输下行数据。
6、 一种信息发送方法， 其特征在于， 包括：
目标站点接收发送站点发送的指示信息； 其中， 所述指示信息用于指示 所述目标站点在至少两个非连续的时间段内不能主动发起数据传输；
所述目标站点在所述至少两个非连续的时间段内接收所述发送站点发送 的数据。
7、 根据权利要求 6所述的方法， 其特征在于， 所述目标站点在所述至少 两个非连续的时间段内接收所述发送站点发送的数据之前， 还包括： 所述目标站点向所述发送站点回复响应信息， 其中， 所述响应信息用于 指示接收站点在所述至少两个非连续的时间段内不能主动发起数据传输。
8、 根据权利要求 7所述的方法， 其特征在于， 所述目标站点向所述发送 站点回复响应信息， 包括：
若所述指示信息是通过一个帧发送的， 则所述目标站点向所述发送站点 发送一个响应帧； 或者，
若所述指示信息是通过至少两个帧发送的， 其中， 所述至少两个帧中分 别包含用于指示所述至少两个非连续时间段中的至少一个时间段的信息， 则 所述目标站点向所述发送站点对应地发送至少两个响应帧。
9、 根据权利要求 6-8中任一项所述的方法， 其特征在于， 所述至少两个 非连续的时间段均用于传输上行数据， 或者均用于传输下行数据， 或者部分 用于传输上行数据且部分用于传输下行数据。
10、 一种信息发送方法， 其特征在于， 包括：
发送站点发送指示信息， 其中， 所述指示信息用于指示预留的时间段； 所述发送站点在所述预留的时间段内发送数据；
所述发送站点在所述预留的时间段内发送释放信息， 其中， 所述释放信 息用于指示接收站点释放所述时间段的剩余时间段中的至少一部分时间段。
11、 根据权利要求 10所述的方法， 其特征在于， 所述预留的时间段为一 段连续的时间段或至少两个非连续的时间段。
12、 一种信息发送方法， 其特征在于， 包括：
接收站点接收发送站点发送的指示信息， 其中， 所述指示信息用于指示 预留的时间段；
所述接收站点在所述预留的时间段内接收所述发送站点发送的释放信 息， 其中， 所述释放信息用于指示所述接收站点释放所述时间段的剩余时间 段中的至少一部分时间段。
13、 根据权利要求 12所述的方法， 其特征在于， 所述预留的时间段为一 段连续的时间段或至少两个非连续的时间段。
14、 一种发送站点， 其特征在于， 包括：
竞争模块， 用于竞争信道；
指示模块， 用于在竞争信道成功后发送指示信息， 其中， 所述指示信息 用于指示接收站点在至少两个非连续的时间段内不能主动发起数据传输； 发送模块， 用于在所述至少两个非连续的时间段内发送数据。
15、 根据权利要求 14所述的发送站点， 其特征在于， 还包括： 接收模块， 用于接收目标站点回复的响应信息， 其中， 所述响应信息用 于指示接收站点在所述至少两个非连续的时间段内不能主动发起数据传输。
16、 根据权利要求 14或 15所述的发送站点， 其特征在于， 所述指示信 息通过一个帧发送， 其中， 所述帧中包含用于指示所述至少两个非连续时间 段的信息； 或者，
所述指示信息通过至少两个帧发送， 其中， 所述至少两个帧中分别包含 用于指示所述至少两个非连续时间段中的至少一个时间段的信息， 并且所述 至少两个帧中的后一个帧是在前一个帧指示的时间段内发送的。
17、 根据权利要求 14-16 中任一项所述的发送站点， 其特征在于， 还包 括：
确定模块， 用于根据待发送数据的周期以及各周期内发送的数据量， 确 定所述至少两个非连续的时间段的长度。
18、 根据权利要求 14-17 中任一项所述的发送站点， 其特征在于， 所述 至少两个非连续的时间段均用于传输上行数据， 或者均用于传输下行数据， 或者部分用于传输上行数据且部分用于传输下行数据。
19、 一种目标站点， 其特征在于， 包括：
第一接收模块， 用于接收发送站点发送的指示信息； 其中， 所述指示信 息用于指示所述目标站点在至少两个非连续的时间段内不能主动发起数据传 输；
第二接收模块， 用于在所述至少两个非连续的时间段内接收所述发送站 点发送的数据。
20、 根据权利要求 19所述的目标站点， 其特征在于， 还包括： 回复模块， 用于向所述发送站点回复响应信息， 其中， 所述响应信息用 于指示接收站点在所述至少两个非连续的时间段内不能主动发起数据传输。
21、 根据权利要求 20所述的目标站点， 其特征在于， 所述回复模块具体 用于： 若所述指示信息是通过一个帧发送的， 则向所述发送站点发送一个响 应帧； 或者， 若所述指示信息是通过至少两个帧发送的， 其中， 所述至少两个帧中分 别包含用于指示所述至少两个非连续时间段中的至少一个时间段的信息， 则 向所述发送站点对应地发送至少两个响应帧。
22、 根据权利要求 19-21 中任一项所述的目标站点， 其特征在于， 所述 至少两个非连续的时间段均用于传输上行数据， 或者均用于传输下行数据， 或者部分用于传输上行数据且部分用于传输下行数据。
23、 一种发送站点， 其特征在于， 包括：
指示模块， 用于发送指示信息， 其中， 所述指示信息用于指示预留的时 间段；
第一发送模块， 用于在所述预留的时间段内发送数据；
第二发送模块， 用于在所述预留的时间段内发送释放信息， 其中， 所述 释放信息用于指示接收站点释放所述时间段的剩余时间段中的至少一部分时 间段。
24、 根据权利要求 23所述的发送站点， 其特征在于， 所述预留的时间段 为一段连续的时间段或至少两个非连续的时间段。
25、 一种接收站点， 其特征在于， 包括：
第一接收模块， 用于接收发送站点发送的指示信息， 其中， 所述指示信 息用于指示预留的时间段；
第二接收模块， 用于在所述预留的时间段内接收所述发送站点发送的释 放信息， 其中， 所述释放信息用于指示所述接收站点释放所述时间段的剩余 时间段中的至少一部分时间段。
26、 根据权利要求 25所述的接收站点， 其特征在于， 所述预留的时间段 为一段连续的时间段或至少两个非连续的时间段。
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