WO2018176431A1 - 全双工传输方法及装置 - Google Patents

全双工传输方法及装置 Download PDF

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Publication number
WO2018176431A1
WO2018176431A1 PCT/CN2017/079143 CN2017079143W WO2018176431A1 WO 2018176431 A1 WO2018176431 A1 WO 2018176431A1 CN 2017079143 W CN2017079143 W CN 2017079143W WO 2018176431 A1 WO2018176431 A1 WO 2018176431A1
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WO
WIPO (PCT)
Prior art keywords
node
sending
access
receiving
channel
Prior art date
Application number
PCT/CN2017/079143
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English (en)
French (fr)
Inventor
董晨
姜彤
李强
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 PCT/CN2017/079143 priority Critical patent/WO2018176431A1/zh
Priority to CN201780089080.4A priority patent/CN110463135B/zh
Priority to EP17903678.5A priority patent/EP3567794A4/en
Publication of WO2018176431A1 publication Critical patent/WO2018176431A1/zh
Priority to US16/536,309 priority patent/US20190363865A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/14Two-way operation using the same type of signal, i.e. duplex
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055Physical resource allocation for ACK/NACK
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/14Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1461Suppression of signals in the return path, i.e. bidirectional control circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2643Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092Error control systems characterised by the topology of the transmission link

Definitions

  • the embodiments of the present application relate to communications technologies, and in particular, to a full duplex transmission method and apparatus.
  • full-duplex transmission means that a node can receive data while transmitting data.
  • the full-duplex transmission can be divided into symmetric full-duplex transmission between two nodes according to the number of participating nodes. Asymmetric full-duplex transmission between three nodes.
  • FIG. 1 is a schematic diagram of a topology of full-duplex transmission. As shown in FIG. 1, if node A receives data sent by node C while transmitting data to node B, node A implements full-duplex transmission.
  • One problem that full duplex needs to solve is how to determine the two (or three) nodes that make up a full duplex transmission and establish a full duplex transmission.
  • the master node responsible for network resource scheduling (such as DM, AP, base station, etc.) determines these two (or three) nodes in advance, and assigns non-contention transmission resources to them, after which they are in this transmission.
  • the full-duplex transmission can be performed without competition on the resources.
  • Another idea is that the two nodes start to transmit after they obtain the transmission resources they need first, that is, the first transmission. As for which two nodes are composed of the second transmission and when the second transmission starts, it is required. It is determined according to certain methods and rules such that the second transmission is generally transmitted later than the first transmission.
  • the first transmission is nodes A and B, and the first transmission is transmitted using the contention-free transmission resource.
  • node C wants to send data to node A in a contention manner to establish a second transmission. If there are multiple nodes C that want to send data to node A, multiple nodes cannot send data to node A at the same time, otherwise a conflict will occur. How to select one node C from multiple nodes C to send data to node A to establish full-duplex transmission is a technical problem that needs to be solved urgently.
  • the embodiment of the present application provides a full-duplex transmission method and apparatus for solving the technical problem of how to establish full-duplex transmission when there are multiple nodes in the prior art.
  • the first aspect of the present application provides a full duplex transmission method, including:
  • the second sending node sends an access request and/or a second data frame to the second receiving node according to the first indication information, where the first sending node and the first sending node
  • the second receiving node is the same node, and the first indication information includes at least one of an access node list or a transit node list;
  • the second sending node acquires second indication information from the second receiving node, where the second indication information includes information indicating whether the access request and/or the second data frame is successfully sent.
  • the access node list is used to indicate which second sending nodes can send an access request to the second receiving node on the access slot
  • the transmitting node list is used to indicate which second sending nodes can be in the transmission slot.
  • the data frame is sent to the second receiving node.
  • the second sending node sends the access request and/or the second data frame to the second receiving node according to the first indication information, where the second sending node The second receiving node acquires the second indication information to learn whether the access request and/or the second data frame is successfully sent, because the second sending node is configured according to The first indication information sends an access request and/or a second data frame to the second receiving node, so that the first sending node receives the access request and/or the second data frame while transmitting the first data frame, thereby completing Full duplex transmission.
  • full-duplex transmission method in the present application can be applied to symmetric full-duplex transmission between two nodes, and also to asymmetric full-duplex transmission between three nodes, thereby creating more full-duplex transmission. Transmission opportunities increase the throughput of the network.
  • the first indication information further includes a transmission end time, where the transmission end time is used to instruct the second sending node to send the access request and/or the second to the second receiving node.
  • the latest end time of the data frame, the transmission end time is not later than the end time at which the first transmitting node sends the first data frame to the first receiving node.
  • the second sending node acquires the second indication information from the second receiving node, including:
  • the second sending node receives the second indication information sent by the second receiving node
  • the second sending node acquires the second indication information, the second indication information, from the second receiving node. Carrying in the first data frame.
  • the second sending node may directly receive the second indication information sent by the second receiving node, or may also send the first data frame to the first receiving node when the first sending node next sends the first data frame.
  • the second receiving node acquires the second indication information, so that the acquiring manner of the second indication information is flexible.
  • the method further includes:
  • the second sending node acquires the first indication information from the second receiving node, where the first indication information is carried in the first data frame;
  • the second sending node acquires the first indication information from the second receiving node, where the first indication information is carried in a previous second indication information, and the last second indication information is the When the receiving node sends an acknowledgment frame to the first sending node, the second receiving node sends the second indication information to the second sending node.
  • the first indication information further includes channel configuration information, where the channel configuration information is used to indicate at least one of the following information:
  • the access channel is included in the channel and/or includes a transport channel; the channel is a channel between the second sending node and the second receiving node; and the access channel is the second sending node Transmitting, by the second receiving node, a channel of the access request, where the second transmission node sends the channel of the second data frame to the second receiving node;
  • the channel includes an access channel, the number of access slots in the access channel.
  • the channel includes a transport channel, the number of transmission slots in the transport channel.
  • Channel configuration information there are several possible ways of channel configuration information: (1) the channel configuration is fixed; (2) the channel can be flexibly configured, and the second receiving node changes the channel configuration periodically or event-triggered; 3) Channel configuration can achieve priority support.
  • the channel configuration information indicates that the channel includes at least one access slot
  • the second sending node sends an access request to the second receiving node according to the first indication information, including:
  • the access node list includes a first field, and the first field indicates that the second sending node is allowed to send the access request, the second sending node randomly selects an access slot, and Sending the access request to the second receiving node on the access slot;
  • the access node list includes the first field and the second field, where the second field is used to indicate a conflict queue, where the conflict queue is used to indicate that an access request is sent, and the access request is sent. If the second sending node that has collided has retransmitted the access request, the second sending node that is in the head of the conflicting queue randomly selects the access slot and receives the second receiving on the access slot. The node sends the access request.
  • the second sending node has three different states, specifically: (1) an access state, at which time the second sending node has not sent an access request to the second receiving node, waiting for the second receiving node. Send an access request. (2) A conflicting state. At this time, the second sending node has sent an access request to the second receiving node, but the transmission request is not successful, so the access request needs to be retransmitted. (3) Transmission state, at this time, the second node node has successfully sent an access request to the second receiving node, waiting for the second receiving node to allocate a transmission slot for data transmission.
  • the second sending node in the access state is prohibited from transmitting the access request by setting the first field, and only the second sending node in the conflicting state is allowed to send the access request, so that the conflict already generated in the network is quickly decomposed. Thereby improving the stability and throughput of the network.
  • the channel configuration information indicates that the channel includes at least one access slot, and the access node list indicates second sending node information that allows an access request to be sent to the second receiving node;
  • the second sending node sends an access request to the second receiving node according to the first indication information, including:
  • the i-th second sending node sends the access request to the second receiving node on the i-th access slot, where i is less than or equal to m, and m is the total number of access slots, i And m are both positive integers.
  • the second transmitting node in the access node list will send an access request to the second receiving node on the access slot allocated to itself.
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the second sending node sends the second data frame to the second receiving node according to the first indication information, including:
  • the second transmitting node in the transmission node list transmits the second data frame to the second receiving node on the transmission time slot.
  • the transmission node list only has a transport channel in the channel configuration information indicating channel, and the transport channel includes at least one transmission slot.
  • the channel configuration information indicates that the channel includes at least one transmission time slot
  • the second transmitting node in the transmission node list transmits the second data frame to the second receiving node on the transmission time slot according to the first indication information.
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the second sending node If the second sending node has a second data frame that needs to be sent to the second receiving node, the second sending node sends the second data frame to the second receiving node after the start of the transmission time slot .
  • the second sending node in the transmission node list needs to send the second data frame to the second When the node is received, the second transmitting node will send a second data frame to the second receiving node after the transmission time slot allocated to itself is started.
  • the first data frame includes a third field, where the third field is used to indicate whether the first indication information is carried in the first data frame.
  • the second aspect of the present application provides a full duplex transmission method, including:
  • the second receiving node receives the access request and/or the second data frame that is sent by the second sending node according to the first indication information, where the first The indication information includes at least one of an access node list or a transmission node list; the first sending node and the second receiving node are the same node;
  • the second receiving node sends second indication information to the second sending node, where the second indication information includes information indicating whether the access request and/or the second data frame is successfully sent.
  • the access node list is used to indicate which second sending nodes can send an access request to the second receiving node on the access slot
  • the transmitting node list is used to indicate which second sending nodes can be in the transmission slot.
  • the data frame is sent to the second receiving node.
  • the second receiving node receives the access request and/or the second data frame sent by the second sending node according to the first indication information, and the second receiving node sends The second sending node sends the second indication information, so that the second sending node knows whether the access request and/or the second data frame is successfully sent, because the second receiving node receives the access that the second sending node sends according to the first indication information.
  • the request and/or the second data frame are such that the first transmitting node receives the access request and/or the second data frame while transmitting the first data frame, thereby completing the full duplex transmission.
  • full-duplex transmission method in the present application can be applied to symmetric full-duplex transmission between two nodes, and also to asymmetric full-duplex transmission between three nodes, thereby creating more full-duplex transmission. Transmission opportunities increase the throughput of the network.
  • the first indication information further includes a transmission end time, where the transmission end time is used to instruct the second sending node to send the access request and/or the second to the second receiving node.
  • the latest end time of the data frame, the transmission end time is not later than the end time at which the first transmitting node sends the first data frame to the first receiving node.
  • the second receiving node sends the second indication information to the second sending node, including:
  • the second receiving node sends the second indication information to the second sending node
  • the second receiving node sends the second indication information to the second sending node, where the second indication information Carry in the first data frame.
  • the second receiving node may directly send the second indication information to the second sending node, or may carry the second indication information in the first data frame and send the information to the second sending node, so that the second indication information is The sending method is more flexible.
  • the method before the second receiving node receives the access request and/or the second data frame that is sent by the second sending node according to the first indication information, the method further includes:
  • the second receiving node sends the first indication information to the second sending node, where the first indication information is carried in a first data frame sent by the first sending node to the first receiving node;
  • the second receiving node sends the second indication information to the second sending node, where the second indication information carries The first indication information is described.
  • the first indication information further includes channel configuration information, where the channel configuration information is used to indicate at least one of the following information:
  • the access channel is included in the channel and/or includes a transport channel; the channel is a channel between the second sending node and the second receiving node; and the access channel is the second sending node Transmitting, by the second receiving node, a channel of the access request, where the second transmission node sends the channel of the second data frame to the second receiving node;
  • the channel includes an access channel, the number of access slots in the access channel.
  • the channel includes a transport channel, the number of transmission slots in the transport channel.
  • Channel configuration information there are several possible ways of channel configuration information: (1) the channel configuration is fixed; (2) the channel can be flexibly configured, and the second receiving node changes the channel configuration periodically or event-triggered; 3) Channel configuration can achieve priority support.
  • the channel configuration information indicates that the channel includes at least one access slot
  • the access node list includes a first field, and the first field indicates that the second sending node is allowed to send the access request, the second receiving node receives the first time on an access slot And the access request sent by the sending node, where the access slot is an access slot randomly selected by the second sending node;
  • the access node list includes the first field and the second field, where the second field is used to indicate a conflict queue, where the conflict queue is used to indicate that an access request is sent, and the access request is sent.
  • the second receiving node receives the access request sent by the second sending node on the access time slot, where the second receiving node resends the access request
  • the slot is an access slot randomly selected by the second sending node ranked in the head of the conflict queue.
  • the second sending node has three different states, specifically: (1) an access state, at which time the second sending node has not sent an access request to the second receiving node, waiting for the second receiving node. Send an access request. (2) A conflicting state. At this time, the second sending node has sent an access request to the second receiving node, but the transmission request is not successful, so the access request needs to be retransmitted. (3) Transmission state, at this time, the second node node has successfully sent an access request to the second receiving node, waiting for the second receiving node to allocate a transmission slot for data transmission.
  • the second sending node in the access state is prohibited from transmitting the access request by setting the first field, and only the second sending node in the conflicting state is allowed to send the access request, so that the conflict already generated in the network is quickly decomposed. Thereby improving the stability and throughput of the network.
  • the channel configuration information indicates that the channel includes at least one access slot, and the access node list indicates second sending node information that allows an access request to be sent to the second receiving node;
  • the second receiving node receives the access request sent by the ith second sending node on the ith access slot, where i is less than or equal to m, and m is the total number of access slots. Both i and m are positive integers.
  • the second transmitting node in the access node list will be on the access slot allocated to itself.
  • the second receiving node sends an access request.
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the second receiving node receives the second data frame sent by the second sending node in the transmission node list on the transmission time slot.
  • the transmission node list only has a transport channel in the channel configuration information indicating channel, and the transport channel includes at least one transmission slot.
  • the channel configuration information indicates that the channel includes at least one transmission slot
  • the second receiving node receives the second data frame transmitted by the second transmitting node in the transmission node list on the transmission slot.
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the first sending node;
  • the second receiving node receives the second data that is sent by the second sending node after the start of the transmission time slot. frame.
  • the second sending node in the transmission node list needs to send the second data frame to the second receiving node
  • the second sending node will go to the second after the transmission time slot allocated to itself.
  • the receiving node sends the second data frame, and the second receiving node will receive the second data frame sent by the second sending node after the start of the transmission time slot.
  • the first data frame includes a third field, where the third field is used to indicate whether the first indication information is carried in the first data frame.
  • the third aspect of the present application provides a sending node, where the sending node is a second sending node, and the second sending node includes:
  • a sending module configured to: when the first sending node sends the first data frame to the first receiving node, send an access request and/or a second data frame to the second receiving node according to the first indication information, where the first sending node And the second receiving node is the same node, and the first indication information includes at least one of an access node list or a transit node list;
  • an acquiring module configured to acquire second indication information from the second receiving node, where the second indication information includes information used to indicate whether the access request and/or the second data frame is successfully sent.
  • the first indication information further includes a transmission end time, where the transmission end time is used to instruct the second sending node to send the access request and/or the second to the second receiving node.
  • the latest end time of the data frame, the transmission end time is not later than the end time at which the first transmitting node sends the first data frame to the first receiving node.
  • the obtaining module is specifically configured to:
  • the second receiving information is obtained from the second receiving node, where the second indication information is carried in the first In the data frame.
  • the obtaining module is further configured to:
  • the second receiving node And acquiring, by the second receiving node, the first indication information, where the first indication information is carried in a previous second indication information, where the previous second indication information is that the first receiving node When the first sending node sends the acknowledgement frame, the second receiving node sends the second indication information to the second sending node.
  • the first indication information further includes channel configuration information, where the channel configuration information is used to indicate at least one of the following information:
  • the access channel is included in the channel and/or includes a transport channel; the channel is a channel between the second sending node and the second receiving node; and the access channel is the second sending node Transmitting, by the second receiving node, a channel of the access request, where the second transmission node sends the channel of the second data frame to the second receiving node;
  • the channel includes an access channel, the number of access slots in the access channel.
  • the channel includes a transport channel, the number of transmission slots in the transport channel.
  • the channel configuration information indicates that the channel includes at least one access slot
  • the sending module is specifically configured to:
  • the access node list includes a first field, and the first field indicates that the second sending node is allowed to send the access request, randomly selecting an access slot, and on the access slot Sending the access request to the second receiving node;
  • the access node list includes the first field and the second field, where the second field is used to indicate a conflict queue, where the conflict queue is used to indicate that an access request is sent, and the access request is sent. If the second sending node that has collided has retransmitted the access request, the second sending node that is in the head of the conflicting queue randomly selects the access slot and receives the second receiving on the access slot. The node sends the access request.
  • the channel configuration information indicates that the channel includes at least one access slot, and the access node list indicates second sending node information that allows an access request to be sent to the second receiving node;
  • the sending module is specifically configured to:
  • the i-th second sending node sends the access request to the second receiving node on the i-th access slot, where i is less than or equal to m, and m is the total number of access slots, i And m are both positive integers.
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the sending module is specifically configured to:
  • the second transmitting node in the transmission node list transmits the second data frame to the second receiving node on the transmission time slot.
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the sending module is specifically configured to:
  • the second sending node If the second sending node has a second data frame that needs to be sent to the second receiving node, the second sending node sends the second data frame to the second receiving node after the start of the transmission time slot .
  • the first data frame includes a third field, where the third field is used to indicate whether the first indication information is carried in the first data frame.
  • the fourth aspect of the present application provides a receiving node, where the receiving node is a second receiving node, and the second receiving node includes:
  • a receiving module configured to: when the first sending node sends the first data frame to the first receiving node, receive an access request and/or a second data frame that is sent by the second sending node according to the first indication information, where An indication information includes at least one of an access node list or a transmission node list; the first sending node and the second receiving node are the same node;
  • a sending module configured to send second indication information to the second sending node, where the second indication information includes information used to indicate whether the access request and/or the second data frame is successfully sent.
  • the first indication information further includes a transmission end time, where the transmission end time is used to instruct the second sending node to send the access request and/or the second to the second receiving node.
  • the latest end time of the data frame, the transmission end time is not later than the end time at which the first transmitting node sends the first data frame to the first receiving node.
  • the sending module is specifically configured to:
  • the second sending information is sent to the second sending node, where the second indication information is carried in the first data frame. in.
  • the sending module is further configured to:
  • the second sending information is sent to the second sending node, where the second indication information carries the first indication information.
  • the first indication information further includes channel configuration information, where the channel configuration information is used to indicate at least one of the following information:
  • the access channel is included in the channel and/or includes a transport channel; the channel is a channel between the second sending node and the second receiving node; and the access channel is the second sending node Transmitting, by the second receiving node, a channel of the access request, where the second transmission node sends the channel of the second data frame to the second receiving node;
  • the channel includes an access channel, the number of access slots in the access channel.
  • the channel includes a transport channel, the number of transmission slots in the transport channel.
  • the channel configuration information indicates that the channel includes at least one access slot
  • the receiving module is specifically configured to:
  • the access node list includes a first field, and the first field indicates that the second sending node is allowed to send the access request, receiving, by the second sending node, the sending location on the access slot An access request, where the access slot is an access slot randomly selected by the second sending node;
  • the access node list includes the first field and the second field, where the second field is used to indicate a conflict queue, where the conflict queue is used to indicate that an access request is sent, and the access request is sent.
  • the second transmitting node that has collided resends the access request in sequence, and the access request sent by the second sending node is received on the access slot, where the access slot is ranked in the conflict queue.
  • the access slot randomly selected by the second sending node of the head.
  • the channel configuration information indicates that the channel includes at least one access slot, and the access node list indicates second sending node information that allows an access request to be sent to the second receiving node;
  • the receiving module is specifically configured to:
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the receiving module is specifically configured to:
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the first sending node;
  • the receiving module is specifically configured to:
  • the first data frame includes a third field, where the third field is used to indicate whether the first indication information is carried in the first data frame.
  • beneficial effects of the receiving node provided by the foregoing fourth aspect and the possible embodiments of the fourth aspect may be referred to the beneficial effects brought by the second aspect and the possible implementation manners of the second aspect, and no longer Narration.
  • a fifth aspect of the present application provides a sending node, including:
  • a transmitter configured to: when the first sending node sends the first data frame to the first receiving node, the second sending node sends an access request and/or a second data frame to the second receiving node according to the first indication information, where The first sending node and the second receiving node are the same node, and the first indication information includes at least one of an access node list or a transit node list;
  • a receiver configured to acquire second indication information from the second receiving node, where the second indication information includes information used to indicate whether the access request and/or the second data frame is successfully sent.
  • the memory and the processor may be further included, and the number of the processors is at least one, and the computer executes the instructions for executing the memory storage.
  • the transmitting node performs the data exchange with the receiving node through the communication interface to perform the full-duplex transmission method provided by the foregoing first aspect or the various embodiments of the first aspect.
  • the memory can be integrated inside the processor.
  • the first indication information further includes a transmission end time, where the transmission end time is used to instruct the second sending node to send the access request and/or the second to the second receiving node.
  • the latest end time of the data frame, the transmission end time is not later than the end time at which the first transmitting node sends the first data frame to the first receiving node.
  • the receiver is specifically configured to:
  • the second receiving information is obtained from the second receiving node, where the second indication information is carried in the first In the data frame.
  • the sending node further includes: a processor
  • the processor is configured to:
  • the second receiving node And acquiring, by the second receiving node, the first indication information, where the first indication information is carried in a previous second indication information, where the previous second indication information is that the first receiving node When the first sending node sends the acknowledgement frame, the second receiving node sends the second indication information to the second sending node.
  • the first indication information further includes channel configuration information, where the channel configuration information is used to indicate at least one of the following information:
  • the access channel is included in the channel and/or includes a transport channel; the channel is a channel between the second sending node and the second receiving node; and the access channel is the second sending node Transmitting, by the second receiving node, a channel of the access request, where the second transmission node sends the channel of the second data frame to the second receiving node;
  • the channel includes an access channel, the number of access slots in the access channel.
  • the channel includes a transport channel, the number of transmission slots in the transport channel.
  • the channel configuration information indicates that the channel includes at least one access slot
  • the transmitter is specifically configured to:
  • the access node list includes a first field, and the first field indicates that the second sending node is allowed to send the access request, randomly selecting an access slot, and on the access slot Sending the access request to the second receiving node;
  • the access node list includes the first field and the second field, where the second field is used to indicate a conflict queue, where the conflict queue is used to indicate that an access request is sent, and the access request is sent. If the second sending node that has collided has retransmitted the access request, the second sending node that is in the head of the conflicting queue randomly selects the access slot and receives the second receiving on the access slot. The node sends the access request.
  • the channel configuration information indicates that the channel includes at least one access slot, and the access node list indicates second sending node information that allows an access request to be sent to the second receiving node;
  • the transmitter is specifically configured to:
  • the i-th second sending node sends the access request to the second receiving node on the i-th access slot, where i is less than or equal to m, and m is the total number of access slots, i And m are both positive integers.
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the transmitter is specifically configured to:
  • the second transmitting node in the transmission node list transmits the second data frame to the second receiving node on the transmission time slot.
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the transmitter is specifically configured to:
  • the first data frame includes a third field, where the third field is used to indicate whether the first indication information is carried in the first data frame.
  • the beneficial effects of the above-mentioned fifth aspect and the possible embodiments provided by the fifth aspect may refer to the first aspect and the beneficial effects brought by the possible implementation manners of the first aspect, and no longer Narration.
  • the sixth aspect of the present application provides a receiving node, where the receiving node is a second receiving node, and the second receiving node includes:
  • a receiver configured to: when the first sending node sends the first data frame to the first receiving node, receive an access request and/or a second data frame that is sent by the second sending node according to the first indication information, where An indication information includes at least one of an access node list or a transmission node list; the first sending node and the second receiving node are the same node;
  • a transmitter configured to send second indication information to the second sending node, where the second indication information includes information used to indicate whether the access request and/or the second data frame is successfully sent.
  • the memory and the processor may be further included, and the number of the processors is at least one, and the execution instructions for executing the memory storage are executed.
  • the full-duplex transmission method provided by the various embodiments of the second aspect or the second aspect is performed by causing the receiving node to perform data interaction with the transmitting node through the communication interface.
  • the memory can also be integrated inside the processor.
  • the first indication information further includes a transmission end time, where the transmission end time is used to instruct the second sending node to send the access request and/or the second to the second receiving node.
  • the latest end time of the data frame, the transmission end time is not later than the end time at which the first transmitting node sends the first data frame to the first receiving node.
  • the transmitter is specifically configured to:
  • the second sending information is sent to the second sending node, where the second indication information is carried in the first data frame. in.
  • the transmitter is specifically configured to:
  • the first indication information further includes channel configuration information, where the channel configuration information is used to indicate at least one of the following information:
  • the access channel is included in the channel and/or includes a transport channel; the channel is a channel between the second sending node and the second receiving node; and the access channel is the second sending node Transmitting, by the second receiving node, a channel of the access request, where the second transmission node sends the channel of the second data frame to the second receiving node;
  • the channel includes an access channel, the number of access slots in the access channel.
  • the channel includes a transport channel, the number of transmission slots in the transport channel.
  • the channel configuration information indicates that the channel includes at least one access slot
  • the receiver is specifically configured to:
  • the access node list includes a first field, and the first field indicates that the second sending node is allowed to send the access request, receiving, by the second sending node, the sending location on the access slot An access request, where the access slot is an access slot randomly selected by the second sending node;
  • the access node list includes the first field and the second field, where the second field is used to indicate a conflict queue, where the conflict queue is used to indicate that an access request is sent, and the access request is sent.
  • the second transmitting node that has collided resends the access request in sequence, and the access request sent by the second sending node is received on the access slot, where the access slot is ranked in the conflict queue.
  • the access slot randomly selected by the second sending node of the head.
  • the channel configuration information indicates that the channel includes at least one access slot, and the access node list indicates second sending node information that allows an access request to be sent to the second receiving node;
  • the receiver is specifically configured to:
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the receiver is specifically configured to:
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the first sending node;
  • the receiver is specifically configured to:
  • the second sending node has a second data frame that needs to be sent to the second receiving node, and receives the second data frame that is sent by the second sending node after the start of the transmission time slot.
  • the first data frame includes a third field, where the third field is used to indicate whether the first indication information is carried in the first data frame.
  • beneficial effects of the above-mentioned second aspect and the possible embodiments provided by the sixth aspect may refer to the beneficial effects brought by the second aspect and the possible implementation manners of the second aspect, and no longer Narration.
  • a seventh aspect of the present application provides a transmitting node, including the foregoing for performing the foregoing first aspect or the first aspect At least one processing element (or chip) of the method of the embodiments.
  • An eighth aspect of the present application provides a receiving node comprising at least one processing element (or chip) for performing the method of the second aspect or the various embodiments of the second aspect described above.
  • a ninth aspect of the present application provides a readable storage medium, where an execution instruction is stored, and when at least one processor of a transmitting node executes the execution instruction, the sending node performs the first aspect or the first aspect.
  • a full duplex transmission method provided by an embodiment.
  • a tenth aspect of the present application provides a readable storage medium, where an execution instruction is stored, and when at least one processor of a receiving node executes the execution instruction, the receiving node performs each of the second aspect or the second aspect.
  • a full duplex transmission method provided by an embodiment.
  • An eleventh aspect of the present application provides a program product, the program product comprising an execution instruction stored in a readable storage medium.
  • At least one processor of the transmitting node may read the execution instruction from a readable storage medium, and the at least one processor executes the execution instruction such that the transmitting node implements the full-duplex transmission method provided by the first aspect or various embodiments of the first aspect .
  • a twelfth aspect of the present application provides a program product, the program product comprising an execution instruction stored in a readable storage medium.
  • At least one processor of the receiving node may read the execution instruction from a readable storage medium, and the at least one processor executes the execution instruction such that the receiving node implements the full duplex transmission provided by the second aspect or the various embodiments of the second aspect method.
  • a thirteenth aspect of the present application provides a network system including the transmitting node and the receiving node in the above aspect.
  • 1 is a schematic diagram of a topology structure of full duplex transmission
  • FIG. 2 is a schematic structural view of a visible light region of a star topology
  • FIG. 3 is a schematic structural diagram of a visible light region of a mesh topology
  • FIG. 4 is a signaling flowchart of Embodiment 1 of a full duplex transmission method according to an embodiment of the present application
  • Figure 5 is a schematic diagram of full duplex transmission
  • Figure 6 is a possible format of the first data frame
  • Figure 7 is another schematic diagram of full duplex transmission
  • FIG. 8 is a schematic structural diagram of Embodiment 1 of a sending node provided by the present application.
  • FIG. 9 is a schematic structural diagram of Embodiment 1 of a receiving node provided by the present application.
  • FIG. 10 is a schematic structural diagram of Embodiment 2 of a sending node according to an embodiment of the present disclosure
  • FIG. 11 is a schematic structural diagram of Embodiment 2 of a receiving node according to an embodiment of the present disclosure.
  • FIG. 2 is a schematic structural diagram of a visible light domain of a star topology
  • FIG. 3 is a schematic structural view of a visible light domain of a mesh topology.
  • the visible light domain is composed of a visible light domain master node (DM) and a plurality of endpoint nodes (EndPoint; EP).
  • DM visible light domain master node
  • EP Endpoint
  • the DM is powered by a Light Emitting Diode (LED) lamp located on the ceiling of the ceiling
  • the EP is a variety of consumer electronics products that integrate Visible Light Communication (VLC) transceivers.
  • VLC Visible Light Communication
  • the DM provides the visible light network access for the EP and manages and maintains the operation of the domain.
  • the EP connects to the visible light domain by accessing the DM.
  • the DM when the DM performs full-duplex transmission, the transmission of the DM to the EP1 transmission data frame is referred to as the first transmission, the DM is the first transmission node, and the EP1 is the first receiving node.
  • the transmission of the other node (EP2, EP3, etc.) to the DM to transmit the data frame is referred to as the second transmission, and the other nodes are the second transmitting node, and the DM is the second receiving node.
  • the first transmission the transmission of the DM to the EP1 transmission data frame
  • the DM is the first transmission node
  • the EP1 is the first receiving node.
  • the transmission of the other node (EP2, EP3, etc.) to the DM to transmit the data frame is referred to as the second transmission, and the other nodes are the second transmitting node, and the DM is the second receiving node.
  • the first sending node and the second receiving node are the same node, both of which are DMs, and the DM needs to have full duplex capability. It should be noted that the first sending node and the second receiving node are not limited to the DM. As long as a certain node has full duplex capability, it can simultaneously perform full duplex transmission as the first sending node and the second receiving node. This application does not limit this.
  • the full-duplex transmission method and apparatus provided by the present application are aimed to solve the technical problem of how to establish full-duplex transmission when there are multiple second sending nodes in the prior art.
  • FIG. 4 is a signaling flowchart of Embodiment 1 of a full duplex transmission method according to an embodiment of the present application.
  • the embodiment of the present application provides a full-duplex transmission method, which may be performed by any device that performs a full-duplex transmission method, and the device may be implemented by software and/or hardware.
  • the second sending node may be any node in the network that has full duplex transmission capability. As shown in FIG. 4, the method in this embodiment may include:
  • Step 401 When the first sending node sends the first data frame to the first receiving node, the second sending node sends an access request and/or a second data frame to the second receiving node according to the first indication information.
  • the first sending node and the second receiving node are the same node, and the first indication information includes at least one of an access node list or a transit node list.
  • the access node list is used to indicate which second sending nodes can send an access request to the second receiving node on the access slot.
  • the transmission node list is used to indicate which second transmission nodes can transmit data frames to the second receiving node on the transmission time slot.
  • the first indication information may further include a transmission end time, where the transmission end time is used to indicate that the second sending node sends the access request and/or the latest end time of the second data frame to the second receiving node, The transmission end time is not later than the end time at which the first transmitting node transmits the first data frame to the first receiving node.
  • the first indication information may further include channel configuration information, where the channel configuration information is used to indicate at least one of: (1) whether an access channel is included in the channel, and/or whether the transmission channel is included;
  • the channel is a channel between the second sending node and the second receiving node;
  • the access channel is a channel that the second sending node sends an access request to the second receiving node, and the transport channel is the second sending node sends the second sending node to the second receiving node.
  • a channel of two data frames (2) the number of access slots in the access channel if the channel includes an access channel; and (3) the number of transmission slots in the transmission channel if the channel includes a transport channel.
  • the second sending node determines, according to the first indication information, which second sending nodes can send an access request to the second receiving node, and which second sending node
  • the second data frame may be sent to the second receiving node, for example, if some nodes are in the access node list, the nodes will serve as the second sending node, and the second receiving node is on the access slot of the access channel. Sending an access request; if some nodes are in the transit node list, these nodes will serve as the second transmitting node, and send data frames and the like to the second receiving node on the transmission slot of the transport channel.
  • the first sending node when sending the first data frame to the first receiving node, also receives the access request and/or the second data frame sent by the second sending node, thereby completing the full duplex transmission.
  • Step 402 The second receiving node sends second indication information to the second sending node, where the second indication information includes information used to indicate whether the access request and/or the second data frame is successfully sent.
  • the second receiving node sends the second indication information to the second sending node, so that the second sending node According to the second indication information, the access request and/or the second data frame is successfully sent.
  • the second sending node acquiring the second indication information from the second receiving node includes the following two different manners:
  • the first type when the first receiving node sends an acknowledgement frame to the first sending node, the second sending node receives the second indication information sent by the second receiving node.
  • FIG. 5 is a schematic diagram of full-duplex transmission, as shown in FIG. 2 and FIG. 5, wherein the MSG frame 1 is a first data frame sent by the first sending node to the first receiving node, and the ACK frame 1 is the first An acknowledgement frame that the receiving node replies to the first sending node.
  • the first receiving node sends the acknowledgement frame ACK frame 1 to the first sending node
  • the second receiving node sends the second indication information to the second sending node.
  • the second type when the first sending node sends the first data frame to the first receiving node, the second sending node obtains the second indication information from the second receiving node, where the second indication information is carried in the first data frame.
  • the second sending node after the second sending node sends the access request and/or the second data frame to the second receiving node, the second receiving node, that is, the first sending node, will send the first data frame to the first receiving node next time.
  • the second indication information is carried in the first data frame and sent to the first receiving node, and the second sending node obtains the second indication information by parsing the first data frame.
  • the time during which the first transmitting node sends the MSG frame 1 to the first receiving node ie, [T1, T2] in FIG. 5
  • a full-duplex transmission opportunity 1 the time during which the first transmitting node sends the MSG frame 1 to the first receiving node
  • the channel between the second sending node and the second receiving node is divided into two parts, an access channel and a transmission channel, and the access channel includes several (such as three).
  • the transport channel also includes several (eg, 1) or equal or unequal length transmission slots.
  • the access slot is used by the second sending node to send an access request to the second receiving node, where the transmission slot is used by the second sending node to send a data frame to the second receiving node, where the data frame can be a high-level service.
  • a physical frame may also be a physical frame carrying a network management message or a control message.
  • the first transmitting node After the second sending node sends the access request and/or the second data frame to the second receiving node at the full duplex transmission opportunity 1, the first transmitting node will send the MSG frame to the first receiving node in the full duplex transmission opportunity 2 2, carrying the second indication information It is sent to the first receiving node in the MSG frame 2.
  • the destination receiving node of the payload information carried in the MSG frame 2 is the first receiving node
  • the destination receiving node of the second indication information carried in the MSG frame 2 is the second sending node
  • the sending of the MSG frame 2 is preferably performed by means of broadcast or multicast, so that the node within the coverage of the signal sent by the first sending node
  • the MSG frame 2 can be received, so that the second sending node can obtain the second indication information by parsing the MSG frame 2.
  • the second sending node when the first sending node sends the first data frame to the first receiving node, the second sending node sends an access request to the second receiving node according to the first indication information and/or Or the second data frame, the second sending node acquires the second indication information from the second receiving node, to learn whether the access request and/or the second data frame is successfully sent, because the second sending node sends the second information according to the first indication information.
  • the receiving node sends the access request and/or the second data frame, so that the first sending node receives the access request and/or the second data frame while transmitting the first data frame, thereby completing the full duplex transmission.
  • full-duplex transmission method in the present application can be applied to symmetric full-duplex transmission between two nodes, and also to asymmetric full-duplex transmission between three nodes, thereby creating more full-duplex transmission. Transmission opportunities increase the throughput of the network.
  • the second sending node before the second sending node sends the access request and/or the second data frame to the second receiving node according to the first indication information, the second sending node needs to obtain the first indication information, in actual application,
  • the manner in which the sending node obtains the first indication information includes the following:
  • the first type the second sending node acquires the first indication information from the second receiving node, where the first indication information is carried in the first data frame.
  • the first sending node may send the first indication information in the first data frame to the first receiving node, and the second sending node may obtain the first indication information by parsing the first data frame.
  • the first indication information may be carried in the frame header of the first data frame, and may be carried in other locations of the first data frame.
  • the first sending node may carry the first indication information in the first data frame MSG frame 1 and send it to the first receiving node, and the second sending node may obtain the first indication by parsing the MSG frame 1. information.
  • the destination receiving node of the payload information carried in the MSG frame 1 is the first receiving node, and the destination receiving node of the first indication information carried in the MSG frame 1 is the second sending node, since the MSG frame 1 needs to be received by the first receiving node. Therefore, the second sending node needs to be received, so the sending of the MSG frame 1 is preferably performed by means of broadcast or multicast, so that the nodes in the coverage of the signal sent by the first sending node can receive the MSG. Frame 1, so that the second sending node can obtain the first indication information by parsing the MSG frame 1.
  • the MSG frame 1 Since the first indication information is indicated in the MSG frame 1, after the second sending node receives the MSG frame 1, the MSG frame 1 needs to be parsed first, and the first indication information is obtained from the MSG frame 1. This process requires a certain Processing time. Therefore, the full-duplex transmission opportunity 1 starts from the time T1 in FIG. 5, not from the time T0, and the time between T0 and T1 is the processing time required for the second transmitting node to receive and parse the MSG frame 1.
  • the first data frame includes a third field, where the third field is used to indicate whether the first indication information is carried in the first data frame.
  • FIG. 6 is a possible format of the first data frame.
  • the first data frame is taken as an example of the MSG frame.
  • the frame header contains a lot of specific fields.
  • a third field is newly added in the frame header of the MSG frame, and the third field may be added after the frame header, or may directly utilize a ratio of a reserved field in the frame header. Come as the field.
  • the third field is used to indicate whether the first indication information is carried after the header of the current MSG frame.
  • the third field when the third field is set to “1”, it indicates that the first indication information exists after the frame header, and when the third field is set to “0”, it indicates that the first indication information does not exist behind the frame header, or the third indication information may be used.
  • the field is set to other values to indicate whether the first indication information exists. This embodiment is not limited herein.
  • the first indication information specifically includes: a transmission end time, channel configuration information, an access node list, and a transmission node list.
  • the channel configuration information further includes: an access channel indicator, a number of access slots, a transmission channel indicator, and a number of transmission slots.
  • the channel is a channel between the second sending node and the second receiving node.
  • the access channel indicator is used to indicate whether the channel includes an access channel; the number of access slots is used to indicate that if the access channel indicator indicates that the access channel is included, the number of access slots is indicated; the transport channel indicator is used for Indicates whether the channel includes a transmission channel; the number of transmission slots is used to indicate that if the transmission channel indicator indicates that the transmission channel is included, the number of transmission slots is indicated.
  • the second type the second sending node obtains the first indication information from the second receiving node, where the first indication information is carried in the previous second indication information, and the previous second indication information is that the first receiving node is first to the first When the sending node sends the acknowledgement frame, the second receiving node sends the second indication information to the second sending node.
  • the second receiving node when the first receiving node sends the last acknowledgement frame to the first sending node, the second receiving node sends the second indication information to the second sending node, and the second receiving node carries the first indication information at The second indication information is sent to the second sending node, and after receiving the second indication information, the second sending node obtains the first indication information by parsing.
  • 7 is another schematic diagram of full-duplex transmission. As shown in FIG. 7, when the first receiving node sends an acknowledgement frame ACK frame 1 to the first sending node, the second receiving node sends a second indication to the second sending node. Information, the second indication information carries the next first indication information.
  • the first indication information includes at least one of an access node list or a transmission node list corresponding to the full duplex transmission opportunity 2.
  • the second sending node since the first indication information is carried in the previous second indication information, the second sending node does not need to obtain the first indication information by receiving and parsing the MSG frame 2, so the second sending node does not need the T0.
  • the processing time between T1, so the full-duplex transmission opportunity starts from time T0 in Fig. 7.
  • the second sending node may also obtain the access node list or the transit node list by using the foregoing first manner and the second manner, or obtain the foregoing first manner and the second manner.
  • the transmission end time, the channel configuration information, the access node list, or the transmission node list for example, the second sending node acquires at least one of the access node list or the transmission node list by using the previous second indication information, and passes the first one of the current
  • the indication information acquires the remaining content in the list of access nodes or the list of transmission nodes.
  • the first sending node may carry the access node list in the previous second indication information, and carry the transmission node list in the current first indication information, and the second sending node will pass the previous second information.
  • the indication information and the current first indication information are acquired to the access node list or the transmission node list.
  • the second sending node may pass the previous second indication. Acquiring at least one of an information acquisition transmission end time, channel configuration information, an access node list, or a transmission node list, and acquiring, by using the first indication information of this time, a transmission end time, channel configuration information, an access node list, or a transmission node list The rest of the content.
  • the first sending node may carry the transmission end time in the previous second indication information, and carry the channel configuration information, the access node list, and the transmission node list in the current first indication information, and the second sending The node acquires the transmission end time, the channel configuration information, the access node list, or the transmission node list by using the previous second indication information and the current first indication information.
  • the first sending node may further carry at least one of the transmission end time, the channel configuration information, the access node list, or the transmission node list in the first N times.
  • the transmission end time, the channel configuration information, the access node list, or the rest of the transmission node list are carried in the first indication information of the previous T times.
  • the second sending node can acquire the transmission end time, the channel configuration information, the access node list, and the transmission node list before sending the access request or the second data frame this time, and the content is specifically carried in the content.
  • the embodiment is not limited herein.
  • the first indication information includes channel configuration information, and the possible implementation manners of the channel configuration information are as follows:
  • the first type the channel configuration is fixed.
  • the channel is a channel between the second sending node and the second receiving node.
  • whether the channel includes an access channel, whether the channel includes a transport channel, and the number of access slots if the access channel is included The number of transmission slots if the transmission channel is included.
  • the second sending node may acquire such known parameters through a beacon or other network management message. Therefore, in this case, the first indication information does not need to include channel configuration information.
  • the fixed configuration of the channel can be as follows:
  • the channel includes n1 (n1 ⁇ 1) access slots, and also includes n2 (n2 ⁇ 1) transmission slots;
  • the channel can be flexibly configured, and the second receiving node changes the configuration of the channel periodically or event-triggered.
  • the second receiving node periodically changes the configuration of the channel.
  • the second receiving node may update the configuration of the channel between the second transmitting node and the second receiving node every N1 channels.
  • the second receiving node event triggers a change in the configuration of the channel. For example, when the first condition is met, consecutive N1 (N1 ⁇ 1) channels include only n1 access slots and 0 transmission slots; when the second condition is satisfied, consecutive N2 (N2 ⁇ 1) channels are only It includes n2 transmission slots and 0 access slots.
  • the first condition is: the transit node list is empty, that is, the node that does not successfully send the access request message exists, but the conflict queue is not empty, and when there are many conflicts, the second receiving node may
  • the channel is set to include only the access channel, which can increase the number of access slots, and can allow more second sending nodes to send access requests, thereby rapidly reducing the number of conflicting nodes in the conflict queue.
  • the second condition is: the access slots on consecutive channels are idle, that is, no second sending node sends an access request to the second receiving node, but the transmitting node list is If it is not empty, the second receiving node may set the channel to include only the transmission channel, so that the nodes in the transmission node list can obtain more transmission opportunities, thereby accelerating the data transmission of the nodes in the transmission node list.
  • the manner in which the second receiving node changes the configuration of the channel periodically or event-triggered can improve the flexibility of channel configuration and improve the throughput of the network.
  • the third type: channel configuration can achieve priority support.
  • the priority of the channel configuration can be implemented either on the access channel or on the transport channel, or both the access channel and the transport channel.
  • a possible implementation of the access channel to support the priority is that the second receiving node can indicate the access priority of different access slots in the first indication information. For example, if there are 4 access slots in total, the services transmitted in the network are divided into four priorities: priority 0, priority 1, priority 2, and priority 3, where priority 3 is the highest priority. Then, the second receiving node can specify that one (or more) access slots can only be used to send data with a priority of 3, so only the second sending node with the priority of the service to be transmitted is 3. An access request message can be sent in this access slot. Similarly, the second receiving node may also specify that the other (or more) access slots can only send access requests to the second sending node with the service priority of 2, and so on.
  • the transmission channel supports two priorities: (1) The second receiving node may indicate the priority of different transmission slots in the first indication information. For example, the transport channel is shared by the three nodes A, B, and C, and the second receiving node indicates that only the second sending node A is allowed to transmit the priority of 2 or more on the transmission time slot allocated to the second sending node A. Data frame. If the second transmitting node A does not have a data frame with a priority of 2 or more, the second transmitting node A does not use the transmission slot for transmission. For the transmission slots of other second transmitting nodes, this can be deduced. (2) The second receiving node is implemented by adjusting the sequence of the second transmitting node in the transmission list and the number of transmission slots obtained by each of the second transmitting nodes.
  • the second sending node with the highest service priority is placed in the head of the transmission node list (or the front position), so that the high priority service is The second sending node can transmit its own data frame earlier, reducing the access delay.
  • the second transmitting node of the high priority service may be allocated to more transmission slots. For example, for a second sending node with a priority of 0, regardless of whether the node has more data frames to send to the second receiving node, only one transmission time slot can be allocated to the second sending node at a time.
  • the node may be allocated more transmission time slots, and even the node may be transmitted. All data frames are then assigned to other second transmitting nodes by transmission slots.
  • the second receiving node may flexibly adjust the configuration of the channel according to the number of the second sending node that sends the access request and the number of the data frames to be sent by the second sending node, for example, only The access channel, only the transmission channel, the existing access channel and the transmission channel, the number of access slots can be adjusted, the number of transmission slots can be adjusted, etc., thereby realizing flexible configuration and dynamic adjustment of the channel. This can increase the flexibility of the system and further increase the throughput of the system.
  • the access node list may be used to indicate which second sending nodes may randomly select one access slot to send an access request to the second receiving node.
  • the second sending node has three different states, specifically: (1) an access state, at which time the second sending node has not sent an access request to the second receiving node, waiting for the second receiving. The node sends an access request. (2) A conflicting state. At this time, the second sending node has sent an access request to the second receiving node, but the transmission request is not successful, so the access request needs to be retransmitted. (3) Transmission state, at this time, the second node node has successfully sent an access request to the second receiving node, waiting for the second receiving node to allocate a transmission slot for data transmission.
  • the second sending node in the access state determines, according to the first field in the first indication information, whether it is allowed to randomly select an access slot on the access slot and send an access request to the second receiving node. If the first field in the first indication information indicates that the second sending node in the access state is not allowed to send the access request to the second receiving node, the second sending node in the access state waits for the next first indication information.
  • the second sending node in the conflicting state needs to be queued in the conflicting queue and waits to retransmit the access request.
  • the second sending nodes in the conflicting state may be further divided into two categories.
  • the first type is the second sending node of the head of the queue queued, and the first indication information is required for such a node. If the medium indicating channel has an access slot, the second sending node may randomly select an access slot and send an access request to the second receiving node; the second type is a second sending of the queuing conflict queue at the non-team head position. node. For such nodes, they cannot randomly select access slots and send access requests to the second receiving node.
  • the method for determining the length of the conflict queue by the node is: when the length of the conflict queue is 0, if the access request in the n access slots on the access channel conflicts, the length of the conflict queue is updated to n.
  • the second receiving node sends the second indication information every time, and the length of the collision queue is decreased by 1.
  • the method for the node to determine the location of the queue in the conflict queue is: the second receiving node sends the first indication information once, if the second type of node just sends the access request on the corresponding access slot, and They know from the second indication that the access request has collided, they are located at the very end of the conflict queue. If they do not send access requests in the corresponding access slot, they will move one bit forward in the queued position of the collision queue.
  • the second transmitting node in the transmitting state they have already sent the access request, and the transmission is successful, so they enter the transmission node list, and the second receiving node will allocate the transmission time slot for the second transmitting node to perform the second data.
  • the transmission of the frame In the transmission node list, if the second sending node is in the head or the first few bits of the transmission node list, the second data frame may already be sent in the current transmission time slot, if the second sending node is in the After the list of transmission nodes, it will be necessary to wait until the head of the transmission node list to send the second data frame to the second receiving node.
  • the manner in which the second sending node sends the access request to the second receiving node may include the following two types according to the content included in the access node list:
  • the first type when the channel configuration information indicates that the channel includes at least one access slot, if the access node list includes the first field, and the first field indicates that the second sending node is allowed to send the access request, the access state is The second sending node randomly selects an access slot, and sends an access request to the second receiving node on the access slot.
  • the second sending node in the access state is not allowed to send to the second receiving node. Incoming requests, because the joining of these nodes will result in an increase in the number of second sending nodes that need to send access requests, and this will further increase the probability of collision of access requests.
  • the second sending node in the access state is prohibited from transmitting the access request by setting the first field, and only the second sending node in the conflicting state is allowed to send the access request, so that the conflict already generated in the network is quickly decomposed. Thereby improving the stability and throughput of the network.
  • the second sending node in the access state it may be indicated whether the second sending node in the access state is allowed to send an access request to the second receiving node. For example, if the value of the first field is "1", it indicates that the second sending node that is in the access state is allowed to send an access request to the second receiving node; if the value of the first field is "0", it indicates that the access is not allowed.
  • the second sending node in the access state sends an access request to the second receiving node.
  • the second sending node randomly selects the access slot and sends the selected access slot to the second receiving node.
  • the access request may be one or more access slots randomly selected by the second sending node.
  • the length of the collision queue is 0, so the second sending node in the access state can be allowed to send an access request to the second receiving node.
  • the second type if the channel configuration information indicates that the channel includes at least one access slot, if the access node list includes the first field and the second field, where the second field is used to indicate the conflict queue, the conflict queue is used to indicate If the second sending node that has sent the access request and the sent access request conflicts retransmits the access request, the second sending node that is ranked in the head of the conflicting queue randomly selects the access slot and An access request is sent to the second receiving node on the access slot.
  • the role of the first field is similar to that in the first mode, and is used to indicate whether the second sending node in the access state is allowed to send an access request to the second receiving node, and the second field is used to indicate the conflicting queue.
  • the conflict queue is used to indicate the sequence of resending the access request by the second sending node that has sent the access request and the sent access request has a conflict.
  • the second sending node A and B will enter the conflict queue, and second When the sending nodes C and D also send an access request to the second receiving node on the second access slot, a collision also occurs, and the second sending nodes C and D will also enter the collision queue, and the second sending node A and B will be ranked in the head of the collision queue, and the second sending nodes C and D will be placed behind the second sending nodes A and B.
  • the second sending nodes C and D may be arranged in the head of the conflicting queue, and the second sending nodes A and B are arranged behind the second sending nodes C and D, and the like.
  • the second field may be in the format shown in Table 1:
  • the second sending node ranked in the head of the conflict queue randomly selects an access slot and sends an access request to the second receiving node on the selected access slot.
  • the following order may be used to define the order in which the second sending nodes are arranged in the conflict queue:
  • Rule 1 sorting the access slots in chronological order.
  • the second sending node that has a collision in the access slot 1 is queued in front of the conflicting queue, and the second sending node that has collided in the last access slot is queued behind the conflicting queue.
  • the second sending node that has collided in the last access slot is ranked in front of the conflicting queue, and the second sending node that collides in the first access slot is ranked at the end of the queue.
  • the second sending node that is in conflict may be sorted by other rules according to the actual situation.
  • the embodiment does not limit the present.
  • the format of the second field in Table 1 can only indicate two different states of the access slot, that is, the second sending node collides and does not collide on an access slot.
  • the second field may also indicate at least three different states: conflict, success, idle.
  • the “conflict” state means that at least two second sending nodes send an access request in the access slot; the “successful” state means that only one second sending node sends in the access slot.
  • the access request; the "idle” state means that no second transmitting node sends an access request in the access slot. Therefore, to indicate the above three states, the second field needs to have at least 2 bits. The following takes 2 bits as an example for description.
  • the second sending node that sends the access request needs to determine, according to the indication of the second field, whether the access request sent by itself is successfully received by the second receiving node. . If the second sending node sends an access request, and the sent access request conflicts, the second sending node further needs to determine, according to the second field, that the conflict in the access slot in which the access request is sent is the row. Where in the conflict queue. For example, if the rule 1 is used, the second sending node needs to know that several collisions have occurred in the access slot in front of the access slot in which it is located.
  • the collision in the access slot in which they are located is queued to the m+1th bit of the collision queue. If, according to the above rule 2, the second sending node needs to find out that several collisions occur in the access slot behind the access slot in which it is located. If j collisions occur later, the collisions in the access slot in which they are located are ranked in the j+1th position of the collision queue.
  • the transmission node list indicates information of a second sending node that allows the second data frame to be sent to the second receiving node. It should be noted that the transmission node list only has a transmission channel in the channel configuration information indication channel, and it only makes sense when the transmission channel includes at least one transmission time slot.
  • the second sending node sends the second data frame to the second receiving node according to the first indication information, where the second sending node in the transmission node list is on the transmission time slot.
  • the second receiving node sends the second data frame.
  • the transport channel can be divided into m transmission slots.
  • m 1
  • only one second sending node on the transport channel can transmit the second data frame.
  • m is greater than 1
  • the transmission channel is divided into a plurality of transmission slots of equal length or unequal length. Therefore, according to the size between the number of second sending nodes and the number of transmission slots indicated in the list of transmission nodes, the list of transmission nodes may have different formats:
  • the first type the number of the second sending node indicated in the transmission node list is equal to the number of the transmission time slots. At this time, one second sending node sends the second data frame to the second receiving node by using only one transmission time slot.
  • the format of the transport node list can be as shown in Table 2:
  • the node identifier of the second sending node may be a short address or a long address.
  • the second type the number of the second sending nodes indicated in the list of the transmitting nodes is smaller than the number of the transmitting time slots. At this time, some or some second sending nodes may send the second receiving node to the multiple receiving time slots. Send a second data frame.
  • the format of the transport node list can be as shown in Table 3:
  • the node identifier of the second sending node may be a short address or a long address. It should be noted that in Table 2, some values in the second column may be the same, that is, the second sending node can send the second data frame to the second receiving node by using multiple different transmission slots.
  • the number of second sending nodes indicated in the list of transmitting nodes is greater than the number of transmitting slots.
  • only the nodes ranked in the first position (or the first few bits) of the list can receive the second in the transmission channel.
  • the node sends a second data frame.
  • the other nodes in the list of transport nodes are not able to send a second data frame to the second receiving node on the transmission slot.
  • the other nodes in the transmission node list have successfully received the access requests sent by the nodes, and by indicating these nodes in the transmission node list, they can know that their access request has been
  • the second receiving node successfully receives.
  • the format of the transmission node list may be as shown in Table 4 (Table 4 shows that only the first node of the team can transmit the second data frame):
  • the second in the transmission node list is The sending node sends a second data frame to the second receiving node in the transmission time slot allocated to itself.
  • the number of the second sending node indicated in the transmitting node list is greater than the number of the transmitting time slots, that is, in Table 4
  • the second transmitting node located only in the head of the transmission node list (or several previous ones) transmits the second data frame to the second receiving node on the transmission slot.
  • the node will randomly select an access slot, and send an access request to the second receiving node on the access slot; if the first field indicates that the second sending node is not allowed to send an access request to the second receiving node, Then the node will not perform any operation, waiting to receive the next first indication.
  • the second sending node after the second sending node sends the access request and/or the second data frame to the second receiving node, the second sending node obtains the second receiving node from the second receiving node.
  • the two indication information may include the following two formats:
  • the second indication information indicates the status of each access slot (a total of m) and the status of the transmission slot (a total of n).
  • the format of the second indication information may be as shown in Table 5:
  • the state of the access slot there are four states of two bits, for example, "00”, “01”, “10”, and "11", and any three of the four states.
  • the status can be used to indicate three states of the access slot “collision”, “idle”, “success”, and the present application is not limited to which state is selected to indicate which combination.
  • the three states on the access slot can also be indicated by other means.
  • the second indication information indicates the status of each access slot (a total of m) and the updated list of transmission nodes.
  • the state of the access slot and its value are similar to those in Table 5, and are not described here.
  • the status of the updated transit node list and its value are similar to those in Table 2 or Table 3 or Table 4. I will not repeat them here.
  • a possible implementation method for the second receiving node to update the transmission node list is:
  • the second receiving node is added to the transmitting node list. If the second data frame sent by the second sending node is successfully received by the second receiving node, and the second data frame does not indicate that the second sending node has more second data frames to send, the second sending The node is removed from the list of transit nodes. If the second data frame sent by the second sending node is successfully received by the second receiving node, and The second data frame indicates that the second sending node needs to send more second data frames, and then processes the second sending node according to a preset rule.
  • the preset rule may be: rule 1, second.
  • the receiving node will wait until the second sending node no longer indicates that more second data frames need to be sent, and delete the second sending node directly from the transmitting node list; rule 2, the second receiving node continuously receives the second After the N (N is an integer greater than or equal to 1) second data frames sent by the sending node, although the second data frame indicates that the second sending node has more second data frames to be sent, the second receiving node will The second transmitting node moves from the head of the list of transmitting nodes to other locations.
  • the first receiving node if the first receiving node also needs to send the data frame to the second receiving node, the first receiving node indicates the information in the acknowledgement frame replied to the second receiving node, and no longer needs to be on the access channel.
  • the second receiving node specifically sends an access request. This can reduce the number of nodes in the network that need to send access requests, reduce the probability of access request conflicts, and further improve network throughput.
  • the second sending node if the second sending node subsequently has more second data frames to send to the second receiving node, the second sending node indicates the information in the second data frame sent this time, without An access request is specifically sent to the second transmitting node on the access channel. This can reduce the number of nodes in the network that need to send access requests, reduce the probability of access request conflicts, and further improve network throughput.
  • the full-duplex transmission method improves the stability of the system compared with the CSMA/CA-based method in the prior art, and improves the throughput of the system and reduces the second.
  • the access delay of the sending node improves the second receiving node.
  • the second receiving node can flexibly adjust and configure the setting of the second transmission channel according to the situation that the second sending node utilizes the access channel and the transmission channel, so that the flexibility of the system is greatly increased, and the system throughput is further improved.
  • the access node list indicates second sending node information that allows an access request to be sent to the second receiving node, where the channel configuration information indicates that the channel includes at least one access slot. And sending, by the second sending node, the access request to the second receiving node according to the first indication information, that the i-th second sending node sends an access request to the second receiving node on the i-th access slot, where i is smaller than Or equal to m, m is the total number of access slots, and both i and m are positive integers.
  • the second sending node has two different states, specifically: (1) an access state, at which time the second sending node has not sent an access request to the second receiving node, waiting for the second receiving.
  • the node sends an access request; (2) the transmission state, at which time the second sending node has successfully sent an access request to the second receiving node, waiting for the second receiving node to allocate a transmission slot for data transmission.
  • the second sending node in the access state determines, according to the access node list in the first indication information, whether it can be sent an access request to the second receiving node on the access slot. Only the second sending node located in the access node list can send an access request to the second receiving node on the access slot designated by the second receiving node.
  • the second receiving node places those nodes in the list of access nodes, depending on the polling strategy employed by the second receiving node. For example, the second receiving node may put all the nodes in the network (except the second receiving node itself) into the access node list. Alternatively, the second receiving node only puts its own one-hop neighbor node into the access node list according to the topology information that it has mastered. Alternatively, the second receiving node knows which nodes have data to send to themselves through other management information, and the second receiving node puts the nodes with transmission requirements into the node list.
  • the second transmitting node in the transmitting state they have already sent the access request, and the transmission is successful, so they enter the transmission node list, and the second receiving node will allocate the transmission time slot for the second transmitting node to perform the second data.
  • the transmission of the frame In the list of transmission nodes, if the second sending node is in the head or the first few positions of the transmission node list, The second data frame can already be sent in the current transmission time slot. If the second sending node is behind the transmission node list, it will need to wait until the head of the transmission node list, and then to the second receiving node. Send a second data frame.
  • the second sending node in the access node list will send an access request to the second receiving node on the access slot allocated to itself, such as the first second sending node.
  • An access request is sent to the second receiving node on the first access slot, and the second second transmitting node sends an access request to the second receiving node on the second access slot.
  • the second sending node will not perform any operation, or the second sending node may also send an access request to the second receiving node, but The access request indicates that no second data frame needs to be sent to the second receiving node.
  • the node identifier of the second sending node may be a short address or a long address.
  • the specific manner in which the second sending node sends the second data frame in the second embodiment is similar to the specific manner in which the second sending node sends the second data frame in the first embodiment, and details are not described herein again.
  • the second sending node after the second sending node sends the access request and/or the second data frame to the second receiving node, the second sending node obtains the second indication from the second receiving node.
  • Information can be in two formats:
  • the second indication information indicates the status of each access slot (a total of m) and the status of the transmission slot (a total of n).
  • the format of the second indication information may be as shown in Table 7:
  • the second indication information indicates the status of each access slot (a total of m) and the updated list of transmission nodes.
  • the state of the access slot and its value are similar to those in Table 7, and are not described here.
  • the status of the updated transit node list and its value are similar to those in Table 2 or Table 3 or Table 4. I will not repeat them here.
  • the second sending node if the second sending node subsequently has more second data frames to send to the second receiving node, the second sending node indicates the information in the second data frame sent this time, without An access request is specifically sent to the second transmitting node on the access channel. This can reduce the number of nodes in the network that need to send access requests, and further improve network throughput.
  • the method for the second receiving node to update the transmission node list is similar to the method for the second receiving node to update the transmission node list in the first possible implementation manner, and details are not described herein again.
  • the full duplex transmission opportunity 2 does not divide the access channel, only the transmission channel.
  • the first indication information will not include the access channel, and thus does not include Into the time slot.
  • the transmission node list indicates information of the second transmitting node that allows the second data frame to be transmitted to the second receiving node, and when the channel configuration information indicates that the channel includes at least one transmission time slot, the second transmitting node according to the first
  • the sending, by the indication information, the second data frame to the second receiving node includes: if the second sending node needs to send the second data frame to the second receiving node, the second sending node sends the second receiving node to the second receiving node after the transmission time slot starts. Two data frames.
  • the second sending node in the transmission node list needs to send the second data frame to the second receiving node
  • the second sending node sends the second transmission node to the second receiving node after the transmission time slot allocated to itself Sending a second data frame, such as according to the format of the transmission node list
  • the second transmitting node 1 will be able to transmit the second data frame first on the transmission channel
  • the second transmitting node 2 will be able to transmit the second one on the transmission channel.
  • the second transmitting node if the second transmitting node does not need to send the second data frame to the second receiving node, the second transmitting node will not perform any operation; if the current transmission time slot is not assigned to a certain second transmitting node The transmission time slot, the second transmitting node needs to listen to the frame header of the second data frame sent by the other second sending node to the second receiving node at the beginning of the transmission time slot, and according to the frame header of the second data frame
  • the "frame length" field determines when the current transmission slot ends and when the next transmission slot begins, to determine its own transmission slot.
  • the node identifier of the second sending node may be a short address or a long address.
  • nodes that are not in the list of transit nodes will not perform any operations and will wait to receive the next first indication.
  • the second sending node after the second sending node sends the access request and/or the second data frame to the second receiving node, the second sending node obtains the second receiving node from the second receiving node.
  • the second indication information is used to indicate the reception status of the second data frame received by the second receiving node in each transmission slot.
  • the second indication information since the second indication information is the reception of the second data frame sent by the second sending node.
  • the feedback of the status so the second indication information may be in the same format as the acknowledgement frame sent by the first receiving node to the first sending node.
  • the format of the second indication information may be as shown in Table 9:
  • the second sending node sends an access request and/or a second data frame to the second receiving node according to different manners, thereby increasing the total The flexibility of duplex transmission.
  • FIG. 8 is a schematic structural diagram of Embodiment 1 of a sending node according to the present application. As shown in FIG. 8, the sending node is a second sending node, and the sending node 10 includes:
  • the sending module 11 is configured to: when the first sending node sends the first data frame to the first receiving node, send an access request and/or a second data frame to the second receiving node according to the first indication information, where the first sending The node and the second receiving node are the same node, and the first indication information includes at least one of an access node list or a transit node list;
  • the obtaining module 12 is configured to acquire second indication information from the second receiving node, where the second indication information includes information used to indicate whether the access request and/or the second data frame is successfully sent.
  • the sending module 11 may be a transmitter or a sending circuit of the sending node
  • the obtaining module 12 may be a receiver or a receiving circuit of the sending node, or the sending module 11 and the obtaining module 12 may also be integrated. Part of the function of the device.
  • the sending node provided in this embodiment may be used to perform the technical solution of the sending node side in any of the foregoing method embodiments, and the implementation principle and the technical effect are similar to the method embodiment, and details are not described herein again.
  • the first indication information further includes a transmission end time, where the transmission end time is used to instruct the second sending node to send the access request and/or the second to the second receiving node.
  • the latest end time of the data frame, the transmission end time is not later than the end time at which the first transmitting node sends the first data frame to the first receiving node.
  • the obtaining module 12 is specifically configured to:
  • the second receiving information is obtained from the second receiving node, where the second indication information is carried in the first In the data frame.
  • the obtaining module 12 is further configured to:
  • the second receiving node And acquiring, by the second receiving node, the first indication information, where the first indication information is carried in a previous second indication information, where the previous second indication information is that the first receiving node When the first sending node sends the acknowledgement frame, the second receiving node sends the second indication information to the second sending node.
  • the first indication information further includes channel configuration information, where the channel configuration information is used to indicate at least one of the following information:
  • the access channel is included in the channel and/or includes a transport channel; the channel is a channel between the second sending node and the second receiving node; and the access channel is the second sending node
  • the second receiving node sends And sending, by the second sending node, a channel of the second data frame to the second receiving node;
  • the channel includes an access channel, the number of access slots in the access channel.
  • the channel includes a transport channel, the number of transmission slots in the transport channel.
  • the channel configuration information indicates that the channel includes at least one access slot
  • the sending module 11 is specifically configured to:
  • the access node list includes a first field, and the first field indicates that the second sending node is allowed to send the access request, randomly selecting an access slot, and on the access slot Sending the access request to the second receiving node;
  • the access node list includes the first field and the second field, where the second field is used to indicate a conflict queue, where the conflict queue is used to indicate that an access request is sent, and the access request is sent. If the second sending node that has collided has retransmitted the access request, the second sending node that is in the head of the conflicting queue randomly selects the access slot and receives the second receiving on the access slot. The node sends the access request.
  • the channel configuration information indicates that the channel includes at least one access slot, and the access node list indicates second sending node information that allows an access request to be sent to the second receiving node;
  • the sending module 11 is specifically configured to:
  • the i-th second sending node sends the access request to the second receiving node on the i-th access slot, where i is less than or equal to m, and m is the total number of access slots, i And m are both positive integers.
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the sending module 11 is specifically configured to:
  • the second transmitting node in the transmission node list transmits the second data frame to the second receiving node on the transmission time slot.
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the sending module 11 is specifically configured to:
  • the second sending node If the second sending node has a second data frame that needs to be sent to the second receiving node, the second sending node sends the second data frame to the second receiving node after the start of the transmission time slot .
  • the first data frame includes a third field, where the third field is used to indicate whether the first indication information is carried in the first data frame.
  • the sending node provided in this embodiment may be used to perform the technical solution of the sending node side in any of the foregoing method embodiments, and the implementation principle and the technical effect are similar to the method embodiment, and details are not described herein again.
  • FIG. 9 is a schematic structural diagram of Embodiment 1 of a receiving node according to the present application. As shown in FIG. 9, the receiving node is a second receiving node, and the receiving node 20 includes:
  • the receiving module 21 is configured to: when the first sending node sends the first data frame to the first receiving node, receive an access request and/or a second data frame that is sent by the second sending node according to the first indication information, where
  • the first indication information includes at least one of an access node list or a transmission node list; the first sending node and the second receiving node are the same node;
  • the sending module 22 is configured to send second indication information to the second sending node, where the second indication information includes information used to indicate whether the access request and/or the second data frame is successfully sent.
  • the receiving module 21 may be a receiver or a receiving circuit of the receiving node
  • the sending module 22 may be a transmitter or a sending circuit of the receiving node
  • the receiving module 21 and the sending module 22 may also be integrated. Part of the function of the device.
  • the receiving node provided in this embodiment may be used to perform the technical solution of the receiving node side in any of the foregoing method embodiments, and the implementation principle and the technical effect are similar to the method embodiment, and details are not described herein again.
  • the first indication information further includes a transmission end time, where the transmission end time is used to instruct the second sending node to send the access request and/or the second to the second receiving node.
  • the latest end time of the data frame, the transmission end time is not later than the end time at which the first transmitting node sends the first data frame to the first receiving node.
  • the sending module 22 is specifically configured to:
  • the second sending information is sent to the second sending node, where the second indication information is carried in the first data frame. in.
  • the sending module 22 is further configured to:
  • the second sending information is sent to the second sending node, where the second indication information carries the first indication information.
  • the first indication information further includes channel configuration information, where the channel configuration information is used to indicate at least one of the following information:
  • the access channel is included in the channel and/or includes a transport channel; the channel is a channel between the second sending node and the second receiving node; and the access channel is the second sending node Transmitting, by the second receiving node, a channel of the access request, where the second transmission node sends the channel of the second data frame to the second receiving node;
  • the channel includes an access channel, the number of access slots in the access channel.
  • the channel includes a transport channel, the number of transmission slots in the transport channel.
  • the channel configuration information indicates that the channel includes at least one access slot
  • the receiving module 21 is specifically configured to:
  • the access node list includes a first field, and the first field indicates that the second sending node is allowed to send the access request, receiving, by the second sending node, the sending location on the access slot An access request, where the access slot is an access slot randomly selected by the second sending node;
  • the access node list includes the first field and the second field, where the second field is used to indicate a conflict queue, where the conflict queue is used to indicate that an access request is sent, and the access request is sent.
  • the second round of conflict Receiving, by the sending node, the access sequence, the access request sent by the second sending node, where the access time slot is the second sending that is queued at the head of the conflicting queue The access slot randomly selected by the node.
  • the channel configuration information indicates that the channel includes at least one access slot, and the access node list indicates second sending node information that allows an access request to be sent to the second receiving node;
  • the receiving module 21 is specifically configured to:
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the receiving module 21 is specifically configured to:
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the first sending node;
  • the receiving module 21 is specifically configured to:
  • the first data frame includes a third field, where the third field is used to indicate whether the first indication information is carried in the first data frame.
  • the receiving node provided in this embodiment may be used to perform the technical solution of the receiving node side in any of the foregoing method embodiments, and the implementation principle and the technical effect are similar to the method embodiment, and details are not described herein again.
  • FIG. 10 is a schematic structural diagram of Embodiment 2 of a sending node according to an embodiment of the present disclosure.
  • the transmitting node may include a transmitter 30, a processor 31, a memory 32, a receiver 34, and at least one communication bus 33.
  • the communication bus 33 is used to implement a communication connection between components.
  • Memory 32 may include high speed RAM memory, and may also include non-volatile memory NVM, such as at least one disk memory, in which various programs may be stored for performing various processing functions and implementing the method steps of the present embodiments.
  • the receiver 34 in this embodiment may be a corresponding input interface having a communication function and a function of receiving information, and may also be a radio frequency module or a baseband module on the transmitting node.
  • the transmitter 30 in this embodiment may have corresponding communication.
  • the output interface of the function and the sending information function may also be a radio frequency module or a baseband module on the transmitting node.
  • the transmitter 30 and the receiver 34 may be integrated in one communication interface, or may be two independent communication interfaces.
  • the transmitter 30 is configured to: when the first sending node sends the first data frame to the first receiving node, the second sending node sends an access request to the second receiving node according to the first indication information, and/or a second data frame, the first sending node and the second receiving node are the same node, and the first indication information includes at least one of an access node list or a transit node list;
  • the receiver 34 is configured to acquire second indication information from the second receiving node, where the second indication information includes information used to indicate whether the access request and/or the second data frame is successfully sent.
  • the first indication information further includes a transmission end time, where the transmission end time is used to instruct the second sending node to send the access request and/or the second to the second receiving node. a latest end time of the data frame, the transmission end time is not later than the first transmitting node transmitting the first data frame to the first receiving node End Time.
  • the receiver 34 is specifically configured to:
  • the second receiving information is obtained from the second receiving node, where the second indication information is carried in the first In the data frame.
  • the processor 31 is configured to:
  • the second receiving node And acquiring, by the second receiving node, the first indication information, where the first indication information is carried in a previous second indication information, where the previous second indication information is that the first receiving node When the first sending node sends the acknowledgement frame, the second receiving node sends the second indication information to the second sending node.
  • the first indication information further includes channel configuration information, where the channel configuration information is used to indicate at least one of the following information:
  • the access channel is included in the channel and/or includes a transport channel; the channel is a channel between the second sending node and the second receiving node; and the access channel is the second sending node Transmitting, by the second receiving node, a channel of the access request, where the second transmission node sends the channel of the second data frame to the second receiving node;
  • the channel includes an access channel, the number of access slots in the access channel.
  • the channel includes a transport channel, the number of transmission slots in the transport channel.
  • the channel configuration information indicates that the channel includes at least one access slot
  • the transmitter 30 is specifically configured to:
  • the access node list includes a first field, and the first field indicates that the second sending node is allowed to send the access request, randomly selecting an access slot, and on the access slot Sending the access request to the second receiving node;
  • the access node list includes the first field and the second field, where the second field is used to indicate a conflict queue, where the conflict queue is used to indicate that an access request is sent, and the access request is sent. If the second sending node that has collided has retransmitted the access request, the second sending node that is in the head of the conflicting queue randomly selects the access slot and receives the second receiving on the access slot. The node sends the access request.
  • the channel configuration information indicates that the channel includes at least one access slot, and the access node list indicates second sending node information that allows an access request to be sent to the second receiving node;
  • the transmitter 30 is specifically configured to:
  • the i-th second sending node sends the access request to the second receiving node on the i-th access slot, where i is less than or equal to m, and m is the total number of access slots, i And m are both positive integers.
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the transmitter 30 is specifically configured to:
  • the second transmitting node in the transmission node list transmits the second data frame to the second receiving node on the transmission time slot.
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the transmitter 30 is specifically configured to:
  • the first data frame includes a third field, where the third field is used to indicate whether the first indication information is carried in the first data frame.
  • the sending node provided in this embodiment may be used to perform the technical solution of the sending node side in any of the foregoing method embodiments, and the implementation principle and the technical effect are similar to the method embodiment, and details are not described herein again.
  • FIG. 11 is a schematic structural diagram of Embodiment 2 of a receiving node according to an embodiment of the present disclosure.
  • the receiving node may include a transmitter 40, a processor 41, a memory 42, a receiver 44, and at least one communication bus 43.
  • Communication bus 43 is used to implement a communication connection between the components.
  • Memory 42 may include high speed RAM memory, and may also include non-volatile memory NVM, such as at least one disk memory, in which various programs may be stored for performing various processing functions and implementing the method steps of the present embodiments.
  • the receiver 44 in this embodiment may be a corresponding input interface having a communication function and a function of receiving information, and may also be a radio frequency module or a baseband module on the receiving node.
  • the transmitter 40 in this embodiment may have corresponding communication.
  • the output interface of the function and the sending information function may also be a radio frequency module or a baseband module on the receiving node.
  • the transmitter 40 and the receiver 44 may be integrated in one communication interface, or may be two independent communication interfaces.
  • the receiver 44 is configured to: when the first sending node sends the first data frame to the first receiving node, receive an access request and/or a second data frame that is sent by the second sending node according to the first indication information.
  • the first indication information includes at least one of an access node list or a transmission node list; the first sending node and the second receiving node are the same node;
  • the transmitter 40 is configured to send second indication information to the second sending node, where the second indication information includes information used to indicate whether the access request and/or the second data frame is successfully sent.
  • the first indication information further includes a transmission end time, where the transmission end time is used to instruct the second sending node to send the access request and/or the second to the second receiving node.
  • the latest end time of the data frame, the transmission end time is not later than the end time at which the first transmitting node sends the first data frame to the first receiving node.
  • the transmitter 40 is specifically configured to:
  • the second sending information is sent to the second sending node, where the second indication information is carried in the first data frame. in.
  • the transmitter 40 is specifically configured to:
  • the second sending information is sent to the second sending node, where the second indication information carries the first indication information.
  • the first indication information further includes channel configuration information, where the channel configuration information is used to indicate at least one of the following information:
  • the access channel is included in the channel and/or includes a transport channel; the channel is a channel between the second sending node and the second receiving node; and the access channel is the second sending node Transmitting, by the second receiving node, a channel of the access request, where the second transmission node sends the channel of the second data frame to the second receiving node;
  • the channel includes an access channel, the number of access slots in the access channel.
  • the channel includes a transport channel, the number of transmission slots in the transport channel.
  • the channel configuration information indicates that the channel includes at least one access slot
  • the receiver 44 is specifically configured to:
  • the access node list includes a first field, and the first field indicates that the second sending node is allowed to send the access request, receiving, by the second sending node, the sending location on the access slot An access request, where the access slot is an access slot randomly selected by the second sending node;
  • the access node list includes the first field and the second field, where the second field is used to indicate a conflict queue, where the conflict queue is used to indicate that an access request is sent, and the access request is sent.
  • the second transmitting node that has collided resends the access request in sequence, and the access request sent by the second sending node is received on the access slot, where the access slot is ranked in the conflict queue.
  • the access slot randomly selected by the second sending node of the head.
  • the channel configuration information indicates that the channel includes at least one access slot, and the access node list indicates second sending node information that allows an access request to be sent to the second receiving node;
  • the receiver 44 is specifically configured to:
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the second receiving node;
  • the receiver 44 is specifically configured to:
  • the channel configuration information indicates that the channel includes at least one transmission time slot;
  • the transmission node list indicates that the second sending node information of the second data frame is allowed to be sent to the first sending node;
  • the receiver 44 is specifically configured to:
  • the second sending node has a second data frame that needs to be sent to the second receiving node, and receives the second data frame that is sent by the second sending node after the start of the transmission time slot.
  • the first data frame includes a third field, where the third field is used to indicate whether the first indication information is carried in the first data frame.
  • the receiving node provided in this embodiment may be used to perform the technical solution of the receiving node side in any of the foregoing method embodiments, and the implementation principle and the technical effect are similar to the method embodiment, and details are not described herein again.
  • the present application further provides a readable storage medium.
  • the readable storage medium stores instructions. When at least one processor of the sending node executes the instruction, the sending node performs the full duplex transmission method provided in any one of the foregoing method embodiments. .
  • the present application further provides a readable storage medium.
  • the readable storage medium stores instructions. When at least one processor of the receiving node executes the instruction, the receiving node performs the full duplex transmission method provided in any one of the foregoing method embodiments. .
  • the application also provides a program product comprising instructions stored in a readable storage medium.
  • At least one processor of the transmitting node can read the instruction from a readable storage medium and execute the instruction such that the transmitting node implements the full duplex transmission method provided in any of the method embodiments.
  • the application also provides a program product comprising instructions stored in a readable storage medium.
  • At least one processor of the receiving node can read the instruction from a readable storage medium and execute the instruction such that the receiving node implements the full duplex transmission method provided in any of the method embodiments described above.
  • the processor may be a central processing unit (English: Central Processing Unit, CPU for short), or other general-purpose processor, digital signal processor (English: Digital Signal) Processor, referred to as DSP, and Application Specific Integrated Circuit (ASIC).
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in connection with the present application may be directly embodied by hardware processor execution or by a combination of hardware and software modules in a processor.
  • All or part of the steps of implementing the above method embodiments may be performed by hardware associated with the program instructions.
  • the aforementioned program can be stored in a readable memory.
  • the steps including the foregoing method embodiments are performed; and the foregoing memory (storage medium) includes: read-only memory (English: read-only memory, abbreviation: ROM), RAM, flash memory, hard disk, Solid state drive, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.

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Abstract

本申请提供一种全双工传输方法及装置,该方法包括:在第一发送节点向第一接收节点发送第一数据帧时,第二发送节点根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧,所述第一发送节点和所述第二接收节点是同一个节点,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;所述第二发送节点从所述第二接收节点获取第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。本申请提供的全双工传输方法及装置能够建立全双工传输。

Description

全双工传输方法及装置 技术领域
本申请实施例涉及通信技术,尤其涉及一种全双工传输方法及装置。
背景技术
在通信系统中,全双工传输是指节点在发送数据的同时也能接收数据,其中,全双工传输根据参与的节点个数的不同可以分为两节点之间的对称全双工传输和三节点之间的非对称全双工传输。
图1为全双工传输的拓扑结构示意图,如图1所示,如果节点A在向节点B发送数据的同时,也接收节点C发送的数据,则节点A就实现了全双工传输。
全双工需要解决的一个问题是,如何确定组成全双工传输的两个(或三个)节点并建立全双工传输。一种解决思路是负责网络资源调度的主节点(比如DM、AP、基站等)事先确定好这两个(或三个)节点,并将无竞争的传输资源分配给它们,之后它们在这个传输资源上无竞争地进行全双工传输即可。另外一种思路是,两个节点先获得了它们所需的传输资源后先开始进行传输,也即第一传输,至于第二传输由哪两个节点组成以及第二传输什么时候开始,则需要按照一定的方法和规则来确定,这样第二传输一般会晚于第一传输开始进行传输。在如图1所示的全双工传输中,假设第一传输为节点A和B,且第一传输采用无竞争传输资源进行传输。当第一传输开始之后,节点C想通过竞争的方式向节点A发送数据以建立第二传输。如果想要向节点A发送数据的节点C有多个,则多个节点不能同时都向节点A发送数据,否则会产生冲突。如何从多个节点C中选择一个节点C向节点A发送数据,以建立全双工传输,是目前亟待解决的一个技术问题。
发明内容
本申请实施例提供一种全双工传输方法及装置,用于解决现有技术中有多个节点时如何建立全双工传输的技术问题。
本申请第一方面提供一种全双工传输方法,包括:
在第一发送节点向第一接收节点发送第一数据帧时,第二发送节点根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧,所述第一发送节点和所述第二接收节点是同一个节点,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;
所述第二发送节点从所述第二接收节点获取第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。
在上述方案中,接入节点列表用于指示哪些第二发送节点可以在接入时隙上向第二接收节点发送接入请求,传输节点列表用于指示哪些第二发送节点可以在传输时隙上向第二接收节点发送数据帧。
由于在第一发送节点向第一接收节点发送第一数据帧时,第二发送节点根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧,第二发送节点从第二接收节点获取第二指示信息,以获知接入请求和/或第二数据帧是否发送成功,由于第二发送节点根据 第一指示信息向第二接收节点发送接入请求和/或第二数据帧,使得第一发送节点在发送第一数据帧的同时,会接收接入请求和/或第二数据帧,从而完成全双工的传输。另外,本申请中的全双工传输方法既可以适用于两节点之间的对称全双工传输,也适用于三节点之间的非对称全双工传输,从而创造了更多的全双工传输机会,提升了网络的吞吐量。
可选地,所述第一指示信息还包括传输结束时间,所述传输结束时间用于指示所述第二发送节点向所述第二接收节点发送所述接入请求和/或所述第二数据帧的最晚结束时间,所述传输结束时间不晚于所述第一发送节点向所述第一接收节点发送所述第一数据帧的结束时间。
可选地,所述第二发送节点从所述第二接收节点获取第二指示信息,包括:
在所述第一接收节点向所述第一发送节点发送确认帧时,所述第二发送节点接收所述第二接收节点发送的所述第二指示信息;
或者,
在所述第一发送节点下一次向所述第一接收节点发送第一数据帧时,所述第二发送节点从所述第二接收节点获取所述第二指示信息,所述第二指示信息携带在所述第一数据帧中。
在上述方案中,第二发送节点可以直接接收第二接收节点发送的第二指示信息,或者也可以在第一发送节点下一次向第一接收节点发送第一数据帧时,第二发送节点从第二接收节点获取第二指示信息,使得第二指示信息的获取方式比较灵活。
可选地,所述第二发送节点根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧之前,所述方法还包括:
所述第二发送节点从所述第二接收节点处获取所述第一指示信息,所述第一指示信息携带在所述第一数据帧中;
或者,
所述第二发送节点从所述第二接收节点处获取所述第一指示信息,所述第一指示信息携带在上一个第二指示信息中,所述上一个第二指示信息为所述第一接收节点上一次向所述第一发送节点发送确认帧时,所述第二接收节点发送给所述第二发送节点的第二指示信息。
可选地,所述第一指示信息还包括信道配置信息,所述信道配置信息用于指示如下信息中的至少一个:
信道中是否包括接入信道和/或是否包括传输信道;所述信道为所述第二发送节点和所述第二接收节点之间的信道;所述接入信道为所述第二发送节点向所述第二接收节点发送所述接入请求的信道,所述传输信道为所述第二发送节点向所述第二接收节点发送所述第二数据帧的信道;
若所述信道包括接入信道,则所述接入信道中接入时隙的个数;和
若所述信道包括传输信道,则所述传输信道中传输时隙的个数。
在上述方案中,信道配置信息有几种可能的方式:(1)信道配置固定不变;(2)信道可以进行灵活配置,第二接收节点周期性地或者事件触发地改变信道的配置;(3)信道配置可以实现对优先级的支持。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙;
第二发送节点根据第一指示信息向第二接收节点发送接入请求,包括:
若所述接入节点列表包括第一字段,且所述第一字段指示允许所述第二发送节点发送所述接入请求,则所述第二发送节点随机选择接入时隙,并在所述接入时隙上向所述第二接收节点发送所述接入请求;
或者,
若所述接入节点列表包括所述第一字段和第二字段,其中,所述第二字段用于指示冲突队列,所述冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序,则排在冲突队列队首的第二发送节点随机选择接入时隙并在所述接入时隙上向所述第二接收节点发送所述接入请求。
在上述方案中,第二发送节点存在3种不同的状态,具体为:(1)接入状态,此时第二发送节点尚未向第二接收节点发送过接入请求,等待向第二接收节点发送接入请求。(2)冲突状态,此时第二发送节点已向第二接收节点发送过接入请求,但未发送成功,故需要重传接入请求。(3)传输状态,此时第二节点节点已经成功向第二接收节点发送了接入请求,等待第二接收节点分配传输时隙进行数据发送。
通过第一字段的设置来禁止处于接入状态的第二发送节点发送接入请求,只允许处于冲突状态的第二发送节点发送接入请求,可以让网络中已经产生的冲突快速地得到分解,从而提升网络的稳定性和吞吐量。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙,所述接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息;
第二发送节点根据第一指示信息向第二接收节点发送接入请求,包括:
第i个第二发送节点在第i个接入时隙上向所述第二接收节点发送所述接入请求,其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
在上述方案中,处于接入节点列表中的第二发送节点将在分配给自己的接入时隙上向第二接收节点发送接入请求。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
第二发送节点根据第一指示信息向第二接收节点发送第二数据帧,包括:
所述传输节点列表中的第二发送节点在所述传输时隙上向第二接收节点发送所述第二数据帧。
在上述方案中,传输节点列表仅在信道配置信息指示信道中存在传输信道,且传输信道中包括至少一个传输时隙时才有意义。当信道配置信息指示信道包括至少一个传输时隙时,在传输节点列表中的第二发送节点根据第一指示信息在传输时隙上向第二接收节点发送第二数据帧。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
所述第二发送节点根据第一指示信息向第二接收节点发送第二数据帧,包括:
若所述第二发送节点有第二数据帧需要发送给所述第二接收节点,所述第二发送节点在所述传输时隙开始后向所述第二接收节点发送所述第二数据帧。
在上述方案中,处于传输节点列表中的第二发送节点若有第二数据帧需要发送给第二 接收节点时,则第二发送节点将在分配给自己的传输时隙开始后,向第二接收节点发送第二数据帧。
可选地,所述第一数据帧包括第三字段,所述第三字段用于指示所述第一数据帧中是否携带有所述第一指示信息。
本申请第二方面提供一种全双工传输方法,包括:
在第一发送节点向第一接收节点发送第一数据帧时,第二接收节点接收第二发送节点根据第一指示信息发送的接入请求和/或第二数据帧,其中,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;所述第一发送节点和所述第二接收节点是同一个节点;
所述第二接收节点向所述第二发送节点发送第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。
在上述方案中,接入节点列表用于指示哪些第二发送节点可以在接入时隙上向第二接收节点发送接入请求,传输节点列表用于指示哪些第二发送节点可以在传输时隙上向第二接收节点发送数据帧。
由于在第一发送节点向第一接收节点发送第一数据帧时,第二接收节点接收第二发送节点根据第一指示信息发送的接入请求和/或第二数据帧,第二接收节点向第二发送节点发送第二指示信息,以使第二发送节点获知接入请求和/或第二数据帧是否发送成功,由于第二接收节点接收第二发送节点根据第一指示信息发送的接入请求和/或第二数据帧,使得第一发送节点在发送第一数据帧的同时,会接收接入请求和/或第二数据帧,从而完成全双工的传输。另外,本申请中的全双工传输方法既可以适用于两节点之间的对称全双工传输,也适用于三节点之间的非对称全双工传输,从而创造了更多的全双工传输机会,提升了网络的吞吐量。
可选地,所述第一指示信息还包括传输结束时间,所述传输结束时间用于指示所述第二发送节点向所述第二接收节点发送所述接入请求和/或所述第二数据帧的最晚结束时间,所述传输结束时间不晚于所述第一发送节点向所述第一接收节点发送所述第一数据帧的结束时间。
可选地,所述第二接收节点向所述第二发送节点发送第二指示信息,包括:
在所述第一接收节点向所述第一发送节点发送确认帧时,所述第二接收节点向所述第二发送节点发送所述第二指示信息;
或者,
在所述第一发送节点下一次向所述第一接收节点发送第一数据帧时,所述第二接收节点向所述第二发送节点发送所述第二指示信息,所述第二指示信息携带在第一数据帧中。
在上述方案中,第二接收节点可以直接向第二发送节点发送第二指示信息,或者也可以将第二指示信息携带在第一数据帧中发送给第二发送节点,使得第二指示信息的发送方式比较灵活。
可选地,所述第二接收节点接收第二发送节点根据第一指示信息发送的接入请求和/或第二数据帧之前,所述方法还包括:
所述第二接收节点向所述第二发送节点发送所述第一指示信息,所述第一指示信息携带在第一发送节点发送给第一接收节点的第一数据帧中;
或者,
在所述第一接收节点上一次向所述第一发送节点发送确认帧时,所述第二接收节点向所述第二发送节点发送第二指示信息,所述第二指示信息中携带有所述第一指示信息。
可选地,所述第一指示信息还包括信道配置信息,所述信道配置信息用于指示如下信息中的至少一个:
信道中是否包括接入信道和/或是否包括传输信道;所述信道为所述第二发送节点和所述第二接收节点之间的信道;所述接入信道为所述第二发送节点向所述第二接收节点发送所述接入请求的信道,所述传输信道为所述第二发送节点向所述第二接收节点发送所述第二数据帧的信道;
若所述信道包括接入信道,则所述接入信道中接入时隙的个数;和
若所述信道包括传输信道,则所述传输信道中传输时隙的个数。
在上述方案中,信道配置信息有几种可能的方式:(1)信道配置固定不变;(2)信道可以进行灵活配置,第二接收节点周期性地或者事件触发地改变信道的配置;(3)信道配置可以实现对优先级的支持。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙;
第二接收节点接收第二发送节点根据第一指示信息发送的接入请求,包括:
若所述接入节点列表包括第一字段,且所述第一字段指示允许所述第二发送节点发送所述接入请求,则所述第二接收节点在接入时隙上接收所述第二发送节点发送的所述接入请求,所述接入时隙为所述第二发送节点随机选择的接入时隙;
或者,
若所述接入节点列表包括所述第一字段和第二字段,其中,所述第二字段用于指示冲突队列,所述冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序,则所述第二接收节点在接入时隙上接收所述第二发送节点发送的所述接入请求,所述接入时隙为排在冲突队列队首的第二发送节点随机选择的接入时隙。
在上述方案中,第二发送节点存在3种不同的状态,具体为:(1)接入状态,此时第二发送节点尚未向第二接收节点发送过接入请求,等待向第二接收节点发送接入请求。(2)冲突状态,此时第二发送节点已向第二接收节点发送过接入请求,但未发送成功,故需要重传接入请求。(3)传输状态,此时第二节点节点已经成功向第二接收节点发送了接入请求,等待第二接收节点分配传输时隙进行数据发送。
通过第一字段的设置来禁止处于接入状态的第二发送节点发送接入请求,只允许处于冲突状态的第二发送节点发送接入请求,可以让网络中已经产生的冲突快速地得到分解,从而提升网络的稳定性和吞吐量。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙,所述接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息;
第二接收节点接收第二发送节点根据第一指示信息发送的接入请求,包括:
所述第二接收节点在第i个接入时隙上接收第i个第二发送节点发送的所述接入请求,其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
在上述方案中,处于接入节点列表中的第二发送节点将在分配给自己的接入时隙上向 第二接收节点发送接入请求。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
第二接收节点接收第二发送节点根据第一指示信息发送的第二数据帧,包括:
所述第二接收节点接收在所述传输节点列表中的第二发送节点在所述传输时隙上发送的所述第二数据帧。
在上述方案中,传输节点列表仅在信道配置信息指示信道中存在传输信道,且传输信道中包括至少一个传输时隙时才有意义。当信道配置信息指示信道包括至少一个传输时隙时,第二接收节点接收在传输节点列表中的第二发送节点在传输时隙上发送的第二数据帧。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第一发送节点发送所述第二数据帧的第二发送节点信息;
第二接收节点接收第二发送节点根据第一指示信息发送的第二数据帧,包括:
若所述第二发送节点有第二数据帧需要发送给所述第二接收节点,所述第二接收节点接收所述第二发送节点在所述传输时隙开始后发送的所述第二数据帧。
在上述方案中,处于传输节点列表中的第二发送节点若有第二数据帧需要发送给第二接收节点时,则第二发送节点将在分配给自己的传输时隙开始后,向第二接收节点发送第二数据帧,第二接收节点将接收第二发送节点在传输时隙开始后发送的第二数据帧。
可选地,所述第一数据帧包括第三字段,所述第三字段用于指示所述第一数据帧中是否携带有所述第一指示信息。
本申请第三方面提供一种发送节点,所述发送节点为第二发送节点,所述第二发送节点包括:
发送模块,用于在第一发送节点向第一接收节点发送第一数据帧时,根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧,所述第一发送节点和所述第二接收节点是同一个节点,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;
获取模块,用于从所述第二接收节点获取第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。
可选地,所述第一指示信息还包括传输结束时间,所述传输结束时间用于指示所述第二发送节点向所述第二接收节点发送所述接入请求和/或所述第二数据帧的最晚结束时间,所述传输结束时间不晚于所述第一发送节点向所述第一接收节点发送所述第一数据帧的结束时间。
可选地,所述获取模块具体用于:
在所述第一接收节点向所述第一发送节点发送确认帧时,接收所述第二接收节点发送的所述第二指示信息;
或者,
在所述第一发送节点下一次向所述第一接收节点发送第一数据帧时,从所述第二接收节点获取所述第二指示信息,所述第二指示信息携带在所述第一数据帧中。
可选地,所述获取模块还用于:
从所述第二接收节点处获取所述第一指示信息,所述第一指示信息携带在所述第一数据帧中;
或者,
从所述第二接收节点处获取所述第一指示信息,所述第一指示信息携带在上一个第二指示信息中,所述上一个第二指示信息为所述第一接收节点上一次向所述第一发送节点发送确认帧时,所述第二接收节点发送给所述第二发送节点的第二指示信息。
可选地,所述第一指示信息还包括信道配置信息,所述信道配置信息用于指示如下信息中的至少一个:
信道中是否包括接入信道和/或是否包括传输信道;所述信道为所述第二发送节点和所述第二接收节点之间的信道;所述接入信道为所述第二发送节点向所述第二接收节点发送所述接入请求的信道,所述传输信道为所述第二发送节点向所述第二接收节点发送所述第二数据帧的信道;
若所述信道包括接入信道,则所述接入信道中接入时隙的个数;和
若所述信道包括传输信道,则所述传输信道中传输时隙的个数。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙;
所述发送模块具体用于:
若所述接入节点列表包括第一字段,且所述第一字段指示允许所述第二发送节点发送所述接入请求,则随机选择接入时隙,并在所述接入时隙上向所述第二接收节点发送所述接入请求;
或者,
若所述接入节点列表包括所述第一字段和第二字段,其中,所述第二字段用于指示冲突队列,所述冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序,则排在冲突队列队首的第二发送节点随机选择接入时隙并在所述接入时隙上向所述第二接收节点发送所述接入请求。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙,所述接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息;
所述发送模块具体用于:
第i个第二发送节点在第i个接入时隙上向所述第二接收节点发送所述接入请求,其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
所述发送模块,具体用于:
所述传输节点列表中的第二发送节点在所述传输时隙上向第二接收节点发送所述第二数据帧。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
所述发送模块具体用于:
若所述第二发送节点有第二数据帧需要发送给所述第二接收节点,所述第二发送节点在所述传输时隙开始后向所述第二接收节点发送所述第二数据帧。
可选地,所述第一数据帧包括第三字段,所述第三字段用于指示所述第一数据帧中是否携带有所述第一指示信息。
上述第三方面以及第三方面的各可能的实施方式所提供的发送节点,其有益效果可以参照上述第一方面以及第一方面的各可能的实施方式所带来的有益效果,在此不再赘述。
本申请第四方面提供一种接收节点,所述接收节点为第二接收节点,所述第二接收节点包括:
接收模块,用于在第一发送节点向第一接收节点发送第一数据帧时,接收第二发送节点根据第一指示信息发送的接入请求和/或第二数据帧,其中,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;所述第一发送节点和所述第二接收节点是同一个节点;
发送模块,用于向所述第二发送节点发送第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。
可选地,所述第一指示信息还包括传输结束时间,所述传输结束时间用于指示所述第二发送节点向所述第二接收节点发送所述接入请求和/或所述第二数据帧的最晚结束时间,所述传输结束时间不晚于所述第一发送节点向所述第一接收节点发送所述第一数据帧的结束时间。
可选地,所述发送模块,具体用于:
在所述第一接收节点向所述第一发送节点发送确认帧时,向所述第二发送节点发送所述第二指示信息;
或者,
在所述第一发送节点下一次向所述第一接收节点发送第一数据帧时,向所述第二发送节点发送所述第二指示信息,所述第二指示信息携带在第一数据帧中。
可选地,所述发送模块,还用于:
向所述第二发送节点发送所述第一指示信息,所述第一指示信息携带在第一发送节点发送给第一接收节点的第一数据帧中;
或者,
在所述第一接收节点上一次向所述第一发送节点发送确认帧时,向所述第二发送节点发送第二指示信息,所述第二指示信息中携带有所述第一指示信息。
可选地,所述第一指示信息还包括信道配置信息,所述信道配置信息用于指示如下信息中的至少一个:
信道中是否包括接入信道和/或是否包括传输信道;所述信道为所述第二发送节点和所述第二接收节点之间的信道;所述接入信道为所述第二发送节点向所述第二接收节点发送所述接入请求的信道,所述传输信道为所述第二发送节点向所述第二接收节点发送所述第二数据帧的信道;
若所述信道包括接入信道,则所述接入信道中接入时隙的个数;和
若所述信道包括传输信道,则所述传输信道中传输时隙的个数。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙;
所述接收模块,具体用于:
若所述接入节点列表包括第一字段,且所述第一字段指示允许所述第二发送节点发送所述接入请求,则在接入时隙上接收所述第二发送节点发送的所述接入请求,所述接入时隙为所述第二发送节点随机选择的接入时隙;
或者,
若所述接入节点列表包括所述第一字段和第二字段,其中,所述第二字段用于指示冲突队列,所述冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序,则在接入时隙上接收所述第二发送节点发送的所述接入请求,所述接入时隙为排在冲突队列队首的第二发送节点随机选择的接入时隙。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙,所述接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息;
所述接收模块,具体用于:
在第i个接入时隙上接收第i个第二发送节点发送的所述接入请求,其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
所述接收模块,具体用于:
接收在所述传输节点列表中的第二发送节点在所述传输时隙上发送的所述第二数据帧。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第一发送节点发送所述第二数据帧的第二发送节点信息;
所述接收模块,具体用于:
若所述第二发送节点有第二数据帧需要发送给所述第二接收节点,则接收所述第二发送节点在所述传输时隙开始后发送的所述第二数据帧。
可选地,所述第一数据帧包括第三字段,所述第三字段用于指示所述第一数据帧中是否携带有所述第一指示信息。
上述第四方面以及第四方面的各可能的实施方式所提供的接收节点,其有益效果可以参照上述第二方面以及第二方面的各可能的实施方式所带来的有益效果,在此不再赘述。
本申请第五方面提供一种发送节点,包括:
发送器,用于在第一发送节点向第一接收节点发送第一数据帧时,第二发送节点根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧,所述第一发送节点和所述第二接收节点是同一个节点,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;
接收器,用于从所述第二接收节点获取第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。
在上述发送节点的具体实现方式中,还可以包括存储器和处理器,处理器的数量为至少一个,用来执行存储器存储的计算机执行指令。使得发送节点通过通信接口与接收节点之间进行数据交互来执行上述第一方面或者第一方面的各种实施方式提供的全双工传输方法。可选的,存储器可以集成在处理器的内部。
可选地,所述第一指示信息还包括传输结束时间,所述传输结束时间用于指示所述第二发送节点向所述第二接收节点发送所述接入请求和/或所述第二数据帧的最晚结束时间,所述传输结束时间不晚于所述第一发送节点向所述第一接收节点发送所述第一数据帧的结束时间。
可选地,所述接收器具体用于:
在所述第一接收节点向所述第一发送节点发送确认帧时,接收所述第二接收节点发送的所述第二指示信息;
或者,
在所述第一发送节点下一次向所述第一接收节点发送第一数据帧时,从所述第二接收节点获取所述第二指示信息,所述第二指示信息携带在所述第一数据帧中。
可选地,所述发送节点还包括:处理器;
所述处理器,用于:
从所述第二接收节点处获取所述第一指示信息,所述第一指示信息携带在所述第一数据帧中;
或者,
从所述第二接收节点处获取所述第一指示信息,所述第一指示信息携带在上一个第二指示信息中,所述上一个第二指示信息为所述第一接收节点上一次向所述第一发送节点发送确认帧时,所述第二接收节点发送给所述第二发送节点的第二指示信息。
可选地,所述第一指示信息还包括信道配置信息,所述信道配置信息用于指示如下信息中的至少一个:
信道中是否包括接入信道和/或是否包括传输信道;所述信道为所述第二发送节点和所述第二接收节点之间的信道;所述接入信道为所述第二发送节点向所述第二接收节点发送所述接入请求的信道,所述传输信道为所述第二发送节点向所述第二接收节点发送所述第二数据帧的信道;
若所述信道包括接入信道,则所述接入信道中接入时隙的个数;和
若所述信道包括传输信道,则所述传输信道中传输时隙的个数。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙;
所述发送器,具体用于:
若所述接入节点列表包括第一字段,且所述第一字段指示允许所述第二发送节点发送所述接入请求,则随机选择接入时隙,并在所述接入时隙上向所述第二接收节点发送所述接入请求;
或者,
若所述接入节点列表包括所述第一字段和第二字段,其中,所述第二字段用于指示冲突队列,所述冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序,则排在冲突队列队首的第二发送节点随机选择接入时隙并在所述接入时隙上向所述第二接收节点发送所述接入请求。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙,所述接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息;
所述发送器,具体用于:
第i个第二发送节点在第i个接入时隙上向所述第二接收节点发送所述接入请求,其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
所述发送器,具体用于:
所述传输节点列表中的第二发送节点在所述传输时隙上向第二接收节点发送所述第二数据帧。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
所述发送器,具体用于:
若所述第二发送节点有第二数据帧需要发送给所述第二接收节点,则在所述传输时隙开始后向所述第二接收节点发送所述第二数据帧。
可选地,所述第一数据帧包括第三字段,所述第三字段用于指示所述第一数据帧中是否携带有所述第一指示信息。
上述第五方面以及第五方面的各可能的实施方式所提供的发送节点,其有益效果可以参照上述第一方面以及第一方面的各可能的实施方式所带来的有益效果,在此不再赘述。
本申请第六方面提供一种接收节点,所述接收节点为第二接收节点,所述第二接收节点包括:
接收器,用于在第一发送节点向第一接收节点发送第一数据帧时,接收第二发送节点根据第一指示信息发送的接入请求和/或第二数据帧,其中,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;所述第一发送节点和所述第二接收节点是同一个节点;
发送器,用于向所述第二发送节点发送第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。
在上述接收节点的具体实现中,还可包括存储器和处理器,且处理器的数量为至少一个,用来执行存储器存储的执行指令。使得接收节点通过通信接口与发送节点之间进行数据交互来执行上述第二方面或者第二方面的各种实施方式提供的全双工传输方法。可选的,存储器还可以集成在处理器内部。
可选地,所述第一指示信息还包括传输结束时间,所述传输结束时间用于指示所述第二发送节点向所述第二接收节点发送所述接入请求和/或所述第二数据帧的最晚结束时间,所述传输结束时间不晚于所述第一发送节点向所述第一接收节点发送所述第一数据帧的结束时间。
可选地,所述发送器,具体用于:
在所述第一接收节点向所述第一发送节点发送确认帧时,向所述第二发送节点发送所述第二指示信息;
或者,
在所述第一发送节点下一次向所述第一接收节点发送第一数据帧时,向所述第二发送节点发送所述第二指示信息,所述第二指示信息携带在第一数据帧中。
可选地,所述发送器,具体用于:
向所述第二发送节点发送所述第一指示信息,所述第一指示信息携带在第一发送节点发送给第一接收节点的第一数据帧中;
或者,
在所述第一接收节点上一次向所述第一发送节点发送确认帧时,向所述第二发送节点 发送第二指示信息,所述第二指示信息中携带有所述第一指示信息。
可选地,所述第一指示信息还包括信道配置信息,所述信道配置信息用于指示如下信息中的至少一个:
信道中是否包括接入信道和/或是否包括传输信道;所述信道为所述第二发送节点和所述第二接收节点之间的信道;所述接入信道为所述第二发送节点向所述第二接收节点发送所述接入请求的信道,所述传输信道为所述第二发送节点向所述第二接收节点发送所述第二数据帧的信道;
若所述信道包括接入信道,则所述接入信道中接入时隙的个数;和
若所述信道包括传输信道,则所述传输信道中传输时隙的个数。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙;
所述接收器,具体用于:
若所述接入节点列表包括第一字段,且所述第一字段指示允许所述第二发送节点发送所述接入请求,则在接入时隙上接收所述第二发送节点发送的所述接入请求,所述接入时隙为所述第二发送节点随机选择的接入时隙;
或者,
若所述接入节点列表包括所述第一字段和第二字段,其中,所述第二字段用于指示冲突队列,所述冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序,则在接入时隙上接收所述第二发送节点发送的所述接入请求,所述接入时隙为排在冲突队列队首的第二发送节点随机选择的接入时隙。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙,所述接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息;
所述接收器,具体用于:
在第i个接入时隙上接收第i个第二发送节点发送的所述接入请求,其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
所述接收器,具体用于:
接收在所述传输节点列表中的第二发送节点在所述传输时隙上发送的所述第二数据帧。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第一发送节点发送所述第二数据帧的第二发送节点信息;
所述接收器,具体用于:
若所述第二发送节点有第二数据帧需要发送给所述第二接收节点,接收所述第二发送节点在所述传输时隙开始后发送的所述第二数据帧。
可选地,所述第一数据帧包括第三字段,所述第三字段用于指示所述第一数据帧中是否携带有所述第一指示信息。
上述第六方面以及第六方面的各可能的实施方式所提供的发送节点,其有益效果可以参照上述第二方面以及第二方面的各可能的实施方式所带来的有益效果,在此不再赘述。
本申请第七方面提供一种发送节点,包括用于执行上述第一方面或者第一方面的各种 实施方式的方法的至少一个处理元件(或芯片)。
本申请第八方面提供一种接收节点,包括用于执行上述第二方面或者第二方面的各种实施方式的方法的至少一个处理元件(或芯片)。
本申请第九方面提供一种可读存储介质,可读存储介质中存储有执行指令,当发送节点的至少一个处理器执行该执行指令时,发送节点执行上述第一方面或者第一方面的各种实施方式提供的全双工传输方法。
本申请第十方面提供一种可读存储介质,可读存储介质中存储有执行指令,当接收节点的至少一个处理器执行该执行指令时,接收节点执行上述第二方面或者第二方面的各种实施方式提供的全双工传输方法。
本申请第十一方面提供一种程序产品,该程序产品包括执行指令,该执行指令存储在可读存储介质中。发送节点的至少一个处理器可以从可读存储介质读取该执行指令,至少一个处理器执行该执行指令使得发送节点实施第一方面或者第一方面的各种实施方式提供的全双工传输方法。
本申请第十二方面提供一种程序产品,该程序产品包括执行指令,该执行指令存储在可读存储介质中。接收节点的至少一个处理器可以从可读存储介质读取该执行指令,至少一个处理器执行该执行指令使得接收节点实施上述第二方面或者第二方面的各种实施方式提供的全双工传输方法。
本申请第十三方面提供一种网络系统,该网络系统包括上述方面中的发送节点和接收节点。
附图说明
图1为全双工传输的拓扑结构示意图;
图2为星型拓扑的可见光域的结构示意图;
图3为网状(mesh)拓扑的可见光域的结构示意图;
图4为本申请实施例提供的全双工传输方法实施例一的信令流程图;
图5为全双工传输的一示意图;
图6为第一数据帧一种可能的格式;
图7为全双工传输的另一示意图;
图8为本申请提供的发送节点实施例一的结构示意图;
图9为本申请提供的接收节点实施例一的结构示意图;
图10为本申请实施例提供的发送节点实施例二的结构示意图;
图11为本申请实施例提供的接收节点实施例二的结构示意图。
具体实施方式
图2为星型拓扑的可见光域的结构示意图,图3为网状(mesh)拓扑的可见光域的结构示意图,如图2和图3所示,本申请实施例提供的全双工传输方法及装置,既可以适用于图2所示的可见光域中,也可以适用于图3所示的可见光域中。其中,可见光域由一个可见光域主节点(Domain Master;DM)和多个端点节点(EndPoint;EP)组成。通常, 对于可见光域来说,DM由位于天花顶上的发光二极管(Light Emitting Diode;LED)灯来担任,而EP则是集成了可见光通信(Visible Light Communication;VLC)收发器的各种消费类电子产品,如智能手机、平板电脑、个人电脑(personal computer;PC)等。其中,DM为EP提供可见光网络接入,并对域的运行进行管理和维护,EP通过接入DM来连接至可见光域。
本申请实施例以图2所示的场景为例进行说明,图3所示场景中具体的实现方式与原理与图2所示的场景类似,此处不再赘述。如图2所示,假设DM与EP1之间的半双工传输已经建立,并且该半双工传输是基于无竞争传输的,即DM向EP1发送业务时采用的资源为无竞争传输机会(Contention-Free Transmission Opportunity;CFTXOP)。在DM向EP1发送数据帧的时间段内,其他EP(如图2中的EP2、EP3)也向DM发送数据帧,这样就能让DM实现边发边收,即全双工传输。在本申请中,DM进行全双工传输时,将DM向EP1发送数据帧的传输称为第一传输,DM为第一发送节点,EP1为第一接收节点。将其它节点(EP2、EP3等)向DM发送数据帧的传输称为第二传输,且其他节点为第二发送节点,DM为第二接收节点。由图2可知,第一发送节点与第二接收节点为同一个节点,都为DM,且DM需要具备全双工能力。需要进行说明的是,第一发送节点与第二接收节点并不局限于DM,只要某个节点具备全双工能力,其都可以同时作为第一发送节点与第二接收节点进行全双工传输,本申请中并不对此进行限制。
参照图2所示,当有多个第二发送节点(如EP2和EP3两个节点)都想利用第一发送节点向第一接收节点发送数据的这段时间向第一发送节点发送数据时,若多个第二发送节点同时向第一发送节点发送数据,则会产生冲突,因此必然会造成第一发送节点处接收数据失败。因此如何选择最合适的第二发送节点,是亟待解决的技术问题。
因此,本申请提供的全双工传输方法及装置,旨在解决现有技术中当有多个第二发送节点时,如何建立全双工传输的技术问题。
下面以具体地实施例对本申请的技术方案进行详细说明。下面这几个具体的实施例可以相互结合,对于相同或相似的概念或过程可能在某些实施例不再赘述。
图4为本申请实施例提供的全双工传输方法实施例一的信令流程图。本申请实施例提供了一种全双工传输方法,该方法可以由任意执行全双工传输方法的装置来执行,该装置可以通过软件和/或硬件实现。本实施例中,第二发送节点可以为网络中任何具备全双工传输能力的节点。如图4所示,本实施例的方法可以包括:
步骤401、在第一发送节点向第一接收节点发送第一数据帧时,第二发送节点根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧。
其中,第一发送节点和第二接收节点是同一个节点,第一指示信息包括接入节点列表或传输节点列表中的至少一个。
在本实施例中,接入节点列表用于指示哪些第二发送节点可以在接入时隙上向第二接收节点发送接入请求。传输节点列表用于指示哪些第二发送节点可以在传输时隙上向第二接收节点发送数据帧。
可选地,第一指示信息中还可以包括传输结束时间,其中,传输结束时间用于指示第二发送节点向第二接收节点发送接入请求和/或第二数据帧的最晚结束时间,传输结束时间不晚于第一发送节点向第一接收节点发送第一数据帧的结束时间。
可选地,第一指示信息中还可以包括信道配置信息,该信道配置信息用于指示如下信息中的至少一个:(1)信道中是否包括接入信道和/或是否包括传输信道;其中,信道为第二发送节点和第二接收节点之间的信道;接入信道为第二发送节点向第二接收节点发送接入请求的信道,传输信道为第二发送节点向第二接收节点发送第二数据帧的信道;(2)若信道包括接入信道,则接入信道中接入时隙的个数;和(3)若信道包括传输信道,则传输信道中传输时隙的个数。
在第一发送节点向第一接收节点发送第一数据帧时,第二发送节点将根据第一指示信息确定出哪些第二发送节点可以向第二接收节点发送接入请求,哪些第二发送节点可以向第二接收节点发送第二数据帧,例如:若某些节点在接入节点列表中,则这些节点将作为第二发送节点,在接入信道的接入时隙上向第二接收节点发送接入请求;若某些节点在传输节点列表中,则这些节点将作为第二发送节点,在传输信道的传输时隙上向第二接收节点发送数据帧等。这样,第一发送节点在向第一接收节点发送第一数据帧的同时,也会接收第二发送节点发送的接入请求和/或第二数据帧,由此可以完成全双工传输。
步骤402、第二接收节点向第二发送节点发送第二指示信息,第二指示信息包含用于指示接入请求和/或第二数据帧是否发送成功的信息。
在本实施例中,第二发送节点向第二接收节点发送接入请求和/或第二数据帧之后,第二接收节点将会向第二发送节点发送第二指示信息,从而第二发送节点根据第二指示信息会获知接入请求和/或第二数据帧是否发送成功。
可选地,第二发送节点从第二接收节点获取第二指示信息包括如下两种不同的方式:
第一种:在第一接收节点向第一发送节点发送确认帧时,第二发送节点接收第二接收节点发送的第二指示信息。
具体地,图5为全双工传输的一示意图,如图2和图5所示,其中,MSG帧1为第一发送节点发送给第一接收节点的第一数据帧,ACK帧1为第一接收节点回复给第一发送节点的确认帧。在第一接收节点向第一发送节点发送确认帧ACK帧1时,第二接收节点会向第二发送节点发送第二指示信息。
第二种:在第一发送节点下一次向第一接收节点发送第一数据帧时,第二发送节点从第二接收节点获取第二指示信息,第二指示信息携带在第一数据帧中。
具体地,第二发送节点向第二接收节点发送接入请求和/或第二数据帧之后,第二接收节点,即第一发送节点将在下一次向第一接收节点发送第一数据帧时,将第二指示信息携带在该第一数据帧中发送给第一接收节点,第二发送节点将通过解析第一数据帧,从而获取到第二指示信息。如图5所示,在本实施例中,将第一发送节点向第一接收节点发送MSG帧1的这段时间(即图5中的[T1,T2])称为全双工传输机会1。本实施例中将全双工传输机会1内,第二发送节点和第二接收节点之间的信道划分为接入信道和传输信道两部分,接入信道包括了若干个(如3个)等长的接入时隙,传输信道也包括了若干个(如1个)或等长或不等长的传输时隙。其中,接入时隙用于第二发送节点向第二接收节点发送接入请求,传输时隙用于第二发送节点向第二接收节点发送数据帧,其中,数据帧可以为携带高层业务的物理帧,也可以为携带了网络管理消息或控制消息的物理帧。第二发送节点在全双工传输机会1时向第二接收节点发送接入请求和/或第二数据帧之后,第一发送节点将在全双工传输机会2内向第一接收节点发送MSG帧2时,将第二指示信息携带 在该MSG帧2中发送给第一接收节点。需要说明的是,MSG帧2里携带的载荷信息的目的接收节点是第一接收节点,MSG帧2里携带的第二指示信息的目的接收节点为第二发送节点,由于MSG帧2既需要被第一接收节点收到,也需要让第二发送节点收到,因此MSG帧2的发送最好采用广播或多播发送的方式,这样在第一发送节点所发送的信号的覆盖范围内的节点都能接收到MSG帧2,从而可以让第二发送节点通过解析MSG帧2获取到第二指示信息。
本申请实施例提供的全双工传输方法,由于在第一发送节点向第一接收节点发送第一数据帧时,第二发送节点根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧,第二发送节点从第二接收节点获取第二指示信息,以获知接入请求和/或第二数据帧是否发送成功,由于第二发送节点根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧,使得第一发送节点在发送第一数据帧的同时,会接收接入请求和/或第二数据帧,从而完成全双工的传输。另外,本申请中的全双工传输方法既可以适用于两节点之间的对称全双工传输,也适用于三节点之间的非对称全双工传输,从而创造了更多的全双工传输机会,提升了网络的吞吐量。
可选地,第二发送节点根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧之前,第二发送节点需要先获取到第一指示信息,在实际应用中,第二发送节点获取第一指示信息的方式包括如下几种:
第一种:第二发送节点从第二接收节点处获取第一指示信息,第一指示信息携带在第一数据帧中。
具体地,第一发送节点可以将第一指示信息携带在第一数据帧中发送给第一接收节点,第二发送节点通过解析该第一数据帧,即可获得第一指示信息。在具体的实现过程中,可以将第一指示信息携带在第一数据帧的帧头中,当然,也可以携带在第一数据帧的其他位置。如图5所示,第一发送节点可以将第一指示信息携带在第一数据帧MSG帧1中发送给第一接收节点,第二发送节点通过解析该MSG帧1,即可获得第一指示信息。MSG帧1里携带的载荷信息的目的接收节点是第一接收节点,MSG帧1里携带的第一指示信息的目的接收节点为第二发送节点,由于MSG帧1既需要被第一接收节点收到,也需要让第二发送节点收到,因此MSG帧1的发送最好采用广播或多播发送的方式,这样在第一发送节点所发送的信号的覆盖范围内的节点都能接收到MSG帧1,从而可以让第二发送节点通过解析MSG帧1获取到第一指示信息。由于第一指示信息是在MSG帧1中指示的,第二发送节点接收到MSG帧1后,需要先对MSG帧1进行解析,从MSG帧1中获取第一指示信息,这个过程需要一定的处理时间。因此全双工传输机会1从图5中的T1时刻开始,而非从T0时刻开始,T0到T1之间的这段时间为第二发送节点接收以及解析MSG帧1所需的处理时间。
可选地,第一数据帧包括第三字段,该第三字段用于指示第一数据帧中是否携带有第一指示信息。
具体地,图6为第一数据帧一种可能的格式,如图6所示,以第一数据帧为MSG帧为例进行说明。本领域技术人员可以理解,一个MSG帧包含了前导、帧头以及载荷三部分。其中帧头中包含了很多具体的字段。本实施例中在MSG帧的帧头中新增加一个第三字段,该第三字段可以添加在帧头的后面,也可以直接利用帧头中某个预留字段中的1比 特来作为该字段。第三字段用于指示在本MSG帧帧头的后面是否携带有第一指示信息。比如,第三字段设置为“1”时,表明帧头的后面存在第一指示信息,第三字段设置为“0”时,表明帧头的后面不存在第一指示信息,或者可以将第三字段设置为其它取值,以指示是否存在第一指示信息,本实施例在此不作限制。
可选地,第一指示信息具体包括的字段有:传输结束时间、信道配置信息、接入节点列表和传输节点列表。信道配置信息进一步包括:接入信道指示符、接入时隙数量、传输信道指示符和传输时隙数量。其中,所述信道为第二发送节点和第二接收节点之间的信道。接入信道指示符用于指示信道是否包括接入信道;接入时隙数量用于指示若接入信道指示符指示包括接入信道,则指示接入时隙个数;传输信道指示符用于指示信道是否包括传输信道;传输时隙数量用于指示若传输信道指示符指示包括传输信道,则指示传输时隙个数。
第二种:第二发送节点从第二接收节点处获取第一指示信息,第一指示信息携带在上一个第二指示信息中,上一个第二指示信息为第一接收节点上一次向第一发送节点发送确认帧时,第二接收节点发送给第二发送节点的第二指示信息。
具体地,在第一接收节点向第一发送节点发送上一个确认帧时,第二接收节点会向第二发送节点发送第二指示信息,此时,第二接收节点将第一指示信息携带在该第二指示信息中发送给第二发送节点,第二发送节点在接收到第二指示信息之后,通过解析,即可获得第一指示信息。图7为全双工传输的另一示意图,如图7所示,在第一接收节点向第一发送节点发送确认帧ACK帧1时,第二接收节点会向第二发送节点发送第二指示信息,该第二指示信息中携带有下一个第一指示信息。此时,该第一指示信息中将包括全双工传输机会2对应的接入节点列表或传输节点列表中的至少一个。另外,由于第一指示信息是携带在上一个第二指示信息中的,第二发送节点并不需要通过接收和解析MSG帧2来获取第一指示信息,因此第二发送节点也就不需要T0到T1之间的处理时间,所以全双工传输机会是从图7中的T0时刻开始。
另外,在实际应用中,第二发送节点也可以同时采用上述第一种方式和第二种方式,获取接入节点列表或传输节点列表,或者同时采用上述第一种方式和第二种方式获取传输结束时间、信道配置信息、接入节点列表或传输节点列表,例如:第二发送节点通过上一个第二指示信息获取接入节点列表或传输节点列表中的至少一个,通过本次的第一指示信息获取接入节点列表或传输节点列表中的其余内容。举例来说,第一发送节点可以将接入节点列表携带在上一个第二指示信息中,将传输节点列表携带在本次的第一指示信息中,则第二发送节点将通过上一个第二指示信息和本次的第一指示信息获取到接入节点列表或传输节点列表。另外,若第二发送节点同时采用上述第一种方式和第二种方式获取传输结束时间、信道配置信息、接入节点列表或传输节点列表时,第二发送节点将可以通过上一个第二指示信息获取传输结束时间、信道配置信息、接入节点列表或传输节点列表中的至少一个,通过本次的第一指示信息获取传输结束时间、信道配置信息、接入节点列表或传输节点列表中的其余内容。举例来说,第一发送节点可以将传输结束时间携带在上一个第二指示信息中,将信道配置信息、接入节点列表和传输节点列表携带在本次的第一指示信息中,第二发送节点通过上一个第二指示信息和本次的第一指示信息获取到传输结束时间、信道配置信息、接入节点列表或传输节点列表。当然,第一发送节点还可以将传输结束时间、信道配置信息、接入节点列表或传输节点列表中的至少一个携带在前N次的第二 指示信息中,将传输结束时间、信道配置信息、接入节点列表或传输节点列表中的其余部分携带在前T次的第一指示信息中。因此,第二发送节点只要能在本次发送接入请求或第二数据帧之前,获取到传输结束时间、信道配置信息、接入节点列表和传输节点列表即可,对于这些内容具体是携带在哪一次的第一指示信息或第二指示信息中,本实施例在此不作限制。
可选地,第一指示信息中包含了信道配置信息,信道配置信息几种可能的实施方式如下:
第一种:信道配置固定不变。
具体地,该信道为第二发送节点和第二接收节点之间的信道,按照此方式,信道是否包括接入信道、信道是否包括传输信道,若包括接入信道则接入时隙的个数,若包括传输信道则传输时隙的个数,这些都是网络中已知的参数,不随着网络的变化而变化。第二发送节点通过信标或者其他网络管理消息获取到这样的已知参数即可。因此,在这种情况下,第一指示信息无需包括信道配置信息。
更具体地,信道的固定配置可以为如下几种情况:
(1)信道既包括n1(n1≥1)个接入时隙,也包括n2(n2≥1)个传输时隙;
(2)连续N1(N1≥1)个信道仅有n1个接入时隙和0个传输时隙;
(3)连续N2(N2≥1)个信道仅有n2个传输时隙和0个接入时隙;
第二种:信道可以进行灵活配置,第二接收节点周期性地或者事件触发地改变信道的配置。
具体地,第二接收节点周期性地改变信道的配置。比如,第二接收节点可以每N1个信道更新一次第二发送节点和第二接收节点之间的信道的配置。
或者,第二接收节点事件触发地改变信道的配置。比如,在满足第一条件时,连续N1(N1≥1)个信道仅包括n1个接入时隙和0个传输时隙;在满足第二条件时,连续N2(N2≥1)个信道仅包括n2个传输时隙和0个接入时隙。在一种可能的实现方式中,第一条件为:传输节点列表为空,即没有成功发送接入请求消息的节点存在,但是冲突队列不为空,且冲突较多时,则第二接收节点可以将信道设置为仅包括接入信道,这样可以使接入时隙个数增多,能够允许更多的第二发送节点发送接入请求,从而快速减少冲突队列中的冲突节点的个数。在另一种可能的实现方式中,第二条件为:连续若干个信道上的接入时隙都是空闲,即没有第二发送节点向第二接收节点发送接入请求,但是传输节点列表却不为空,则第二接收节点可以将信道设置为仅包括传输信道,这样可以让传输节点列表中的节点获得更多的传输机会,从而加快传输节点列表中节点的数据传输。
第二接收节点周期性地或者事件触发地改变信道的配置的方式可以提高信道配置的灵活性,提高网络的吞吐量。
第三种:信道配置可以实现对优先级的支持。
信道配置对优先级的支持既可以在接入信道上实现,也可以在传输信道上实现,或者接入信道和传输信道同时实现。
接入信道对优先级的支持一种可能的实现方式为:第二接收节点可以在第一指示信息中指示不同接入时隙的接入优先级。比如,如果一共有4个接入时隙,网络中传输的业务分4个优先级:优先级0、优先级1、优先级2和优先级3,其中优先级3是最高优先级, 那么第二接收节点就可以规定,某一个(或多个)接入时隙只能用于发送业务优先级为3的数据,因此只有待传输的业务的优先级为3的第二发送节点,才能在此接入时隙发送接入请求消息。同理,第二接收节点也可以规定另一个(或多个)接入时隙只能让业务优先级为2的第二发送节点发送接入请求,以此类推。
传输信道对优先级的支持包括两种:(1)第二接收节点可以在第一指示信息中指示不同传输时隙的优先级。比如,传输信道一共被3个节点A、B、C所共享,且第二接收节点指示了分配给第二发送节点A的传输时隙上只允许第二发送节点A发送优先级为2及以上的数据帧。如果第二发送节点A没有优先级为2以上的数据帧,则第二发送节点A不使用该传输时隙进行传输。对于其他第二发送节点的传输时隙,可以以此类推。(2)第二接收节点通过调整第二发送节点在传输列表中的先后顺序,以及各个第二发送节点所获得的传输时隙的多少来实现。比如,第二接收节点在为第二发送节点调度传输时隙时,让业务优先级高的第二发送节点排在传输节点列表的队首(或靠前的位置),这样高优先级业务的第二发送节点可以较早地发送自己的数据帧,降低接入时延。或者,高优先级业务的第二发送节点可以分配到更多的传输时隙。比如,对于优先级为0的第二发送节点,不管该节点是不是有更多的数据帧需要发送给第二接收节点,一次只能给该第二发送节点分配一个传输时隙。而对于业务优先级为3的第二发送节点,如果其在数据帧中指示还有更多的数据帧需要发送,则可以给该节点分配更多的传输时隙,甚至可以让该节点传输完所有数据帧之后再给其他第二发送节点分配传输时隙。
本实施例提供的全双工传输方法,第二接收节点可以根据发送接入请求的第二发送节点的个数、第二发送节点待发送的数据帧的多少,灵活调整信道的配置,例如仅有接入信道、仅有传输信道、既有接入信道又有传输信道、接入时隙个数可调、传输时隙个数可调等等,从而实现信道的灵活配置和动态可调,由此可以提高系统的灵活度,使得系统的吞吐量得到进一步提升。
下面,将对几种不同的实施方式中,第二发送节点根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧的过程进行详细说明。
(1)在第一种可能的实施方式中,接入节点列表可以用于指示哪些第二发送节点可以随机选择一个接入时隙向第二接收节点发送接入请求。
此种实施方式下,第二发送节点存在3种不同的状态,具体为:(1)接入状态,此时第二发送节点尚未向第二接收节点发送过接入请求,等待向第二接收节点发送接入请求。(2)冲突状态,此时第二发送节点已向第二接收节点发送过接入请求,但未发送成功,故需要重传接入请求。(3)传输状态,此时第二节点节点已经成功向第二接收节点发送了接入请求,等待第二接收节点分配传输时隙进行数据发送。
处于接入状态的第二发送节点根据第一指示信息中的第一字段,判断自己是否被允许在接入时隙上随机选择一个接入时隙并向第二接收节点发送接入请求。如果第一指示信息中的第一字段指示不允许处于接入状态的第二发送节点向第二接收节点发送接入请求,则处于接入状态的第二发送节点等待下一个第一指示信息。
处于冲突状态的第二发送节点需要在冲突队列中排队,并等待重传接入请求。根据第二发送节点在冲突队列中排队位置的不同,可以进一步将处于冲突状态的第二发送节点分为两类。第一类为排在冲突队列的队首的第二发送节点,对于这类节点只要第一指示信息 中指示信道存在接入时隙,则这类第二发送节点就可以随机选择接入时隙并向第二接收节点发送接入请求;第二类为排队冲突队列非队首位置的第二发送节点。对于这类节点,它们不能随机选择接入时隙并向第二接收节点发送接入请求,它们需要等到自己排到冲突队列队首成为了第一类处于冲突状态的节点时才能发送接入请求。在成为第一类节点前,它们需要根据第二指示信息中反馈的状态信息来确定当前冲突队列的长度以及自己在冲突队列中的位置。具体的,节点确定冲突队列长度的方法为:在冲突队列长度为0的时候,若接入信道上有n个接入时隙里的接入请求发生了冲突,则冲突队列长度更新为n。在冲突队列长度不为0的时候,第二接收节点每发送一次第二指示信息,冲突队列长度减1。具体的,节点确定自己在冲突队列中排队的位置的方法为:第二接收节点每发送一次第一指示信息,如果第二类节点刚在对应的接入时隙上发送了接入请求,且它们根据紧接着的第二指示信息了解到接入请求发生了冲突,则它们位于冲突队列的最末尾。如果它们没有在对应的接入时隙发送接入请求,则它们在冲突队列的排队位置将向前移动一位。
处于传输状态的第二发送节点,它们已经发送过接入请求,并且发送成功,因此它们进入传输节点列表,第二接收节点将会为这类第二发送节点分配传输时隙,进行第二数据帧的发送。传输节点列表中,若该第二发送节点排在传输节点列表的队首或前几位,则将在当前这个传输时隙中就已经可以发送第二数据帧,若该第二发送节点排在传输节点列表的后面,则将需要等到起处于传输节点列表的队首时,再向第二接收节点发送第二数据帧。
根据接入节点列表中包括的内容不同,第二发送节点向第二接收节点发送接入请求的方式可以包括如下两种:
第一种:在信道配置信息指示信道包括至少一个接入时隙时,若接入节点列表包括第一字段,且第一字段指示允许第二发送节点发送接入请求,则处于接入状态的第二发送节点随机选择接入时隙,并在该接入时隙上向第二接收节点发送接入请求。
具体地,若已经有多个第二发送节点发送的接入请求出现了冲突,即冲突队列的长度不为0时,处于接入状态的第二发送节点是不允许向第二接收节点发送接入请求的,因为这些节点的加入会导致需要发送接入请求的第二发送节点个数的增加,而这会进一步增加接入请求发生冲突的概率。通过第一字段的设置来禁止处于接入状态的第二发送节点发送接入请求,只允许处于冲突状态的第二发送节点发送接入请求,可以让网络中已经产生的冲突快速地得到分解,从而提升网络的稳定性和吞吐量。因此,将根据第一字段的取值不同,可以指示是否允许处于接入状态的第二发送节点向第二接收节点发送接入请求。例如:若第一字段取值为“1”时,表示允许处于接入状态的第二发送节点向第二接收节点发送接入请求;若第一字段取值为“0”时,表示不允许处于接入状态的第二发送节点向第二接收节点发送接入请求。或者,当第一字段取值为“0”时,表示允许处于接入状态的第二发送节点向第二接收节点发送接入请求;第一字段取值为“1”时,表示不允许处于接入状态的第二发送节点向第二接收节点发送接入请求。当然,也可以用其他数值表示是否允许处于接入状态的第二发送节点向第二接收节点发送接入请求的情况,对此,本申请不做限制。
若第一字段指示允许处于接入状态的第二发送节点发送接入请求时,该第二发送节点将随机选择接入时隙,并在所选择的接入时隙上向第二接收节点发送接入请求,其中,第二发送节点随机选择的接入时隙可以为一个,也可以为多个。此时,冲突队列的长度为0,因此可以允许处于接入状态的第二发送节点向第二接收节点发送接入请求。
第二种:在信道配置信息指示信道包括至少一个接入时隙时,若接入节点列表包括第一字段和第二字段,其中,第二字段用于指示冲突队列,该冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序,则排在冲突队列队首的第二发送节点随机选择接入时隙并在该接入时隙上向第二接收节点发送接入请求。
具体地,第一字段的作用与第一种方式中类似,用于指示是否允许处于接入状态的第二发送节点向第二接收节点发送接入请求,第二字段用于指示冲突队列,该冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序。例如:若第二发送节点A和B在第一个接入时隙上向第二接收节点发送接入请求时发生了冲突,则第二发送节点A和B将会进入冲突队列中,第二发送节点C和D在第二个接入时隙上向第二接收节点发送接入请求时也发生了冲突,则第二发送节点C和D也将会进入冲突队列中,且第二发送节点A和B将会排在冲突队列的队首,第二发送节点C和D将会排在第二发送节点A和B的后面。当然,在冲突队列中排序时,也可以将第二发送节点C和D排在冲突队列的队首,第二发送节点A和B排在第二发送节点C和D的后面等。
可选地,第二字段可以是如表1所示的格式:
表1
Figure PCTCN2017079143-appb-000001
其中,在冲突队列中的冲突不止一个的时候,则排在冲突队列队首的第二发送节点随机选择接入时隙并在所选择的接入时隙上向第二接收节点发送接入请求。在实施例中可以通过如下几种规则,来限定第二发送节点在冲突队列中的排列顺序:
规则1,按照接入时隙在时间上的先后顺序排序。
例如:接入时隙1里发生冲突的第二发送节点排在冲突队列的前面,在最后一个接入时隙里发生冲突的第二发送节点排在冲突队列的后面等。
规则2,在最后一个接入时隙里发生冲突的第二发送节点排在冲突队列的前面,而在第一个接入时隙里发生冲突的第二发送节点排在队列的最后面。
在具体的实现过程中,还可以根据实际情况通过其他的规则对发生冲突的第二发送节点进行排序,对于具体的排序规则,本实施例在此不作限制。
另外,表1中第二字段的格式,只能指示接入时隙的2种不同的状态,即第二发送节点在某个接入时隙上发生了冲突和未发生冲突。可选地,在一种可能的实施方式中,第二字段还可以指示至少3种不同的状态:冲突、成功、空闲。其中,“冲突”状态是指至少有两个第二发送节点在该接入时隙发送了接入请求;“成功”状态是指有且仅有一个第二发送节点在该接入时隙发送了接入请求;“空闲”状态是指没有第二发送节点在该接入时隙发送接入请求。因此,若要指示上述3种状态,第二字段至少需要有2个比特。下面以2个比特为例进行说明,如当第二字段为“00”时指示“空闲”,为“01”时指示“冲突”,为“10”时指示“成功”。当然,还可以用其他的组合方式来指示这3种不同的状态,本申请不作限制。
另外,无论第二字段是指示2种状态还是3种状态,发送了接入请求的第二发送节点需要根据该第二字段的指示来判断自己发送的接入请求是否成功被第二接收节点接收。如果第二发送节点发送过接入请求,且所发送的接入请求发生了冲突,则第二发送节点还需要根据第二字段判断自己发送接入请求所在的接入时隙里的冲突是排在冲突队列中的什么位置。比如,如果按照上述规则1,则第二发送节点需要获知自己所在接入时隙的前面的接入时隙里发生了几个冲突。若前面发生了m个冲突,则自己所在接入时隙里的冲突就排队冲突队列的第m+1位。而如果按照上述规则2,则第二发送节点需要弄清自己所在接入时隙的后面的接入时隙里发生了几个冲突。若后面发生了j个冲突,则自己所在接入时隙里的冲突就排在冲突队列的第j+1位等。
可选地,在第一种可能的实施方式中,传输节点列表指示允许向第二接收节点发送第二数据帧的第二发送节点的信息。需要进行说明的是,传输节点列表仅在信道配置信息指示信道中存在传输信道,且传输信道中包括至少一个传输时隙时才有意义。
当信道配置信息指示信道包括至少一个传输时隙时,第二发送节点根据第一指示信息向第二接收节点发送第二数据帧,在传输节点列表中的第二发送节点在传输时隙上向第二接收节点发送第二数据帧。
具体地,传输信道可以划分为m个传输时隙,当m为1时,传输信道上只有一个第二发送节点能够发送第二数据帧。当m大于1时,传输信道被划分为多个等长或不等长的传输时隙。因此,根据传输节点列表中指示的第二发送节点个数与传输时隙的个数之间的大小,传输节点列表可以有不同的格式:
第一种:传输节点列表中指示的第二发送节点的个数与传输时隙的个数相等,此时,一个第二发送节点只使用一个传输时隙向第二接收节点发送第二数据帧。可选地,传输节点列表的格式可以如表2所示:
表2
Figure PCTCN2017079143-appb-000002
其中,第二发送节点的节点标识可以为短地址,也可以为长地址。
第二种:传输节点列表中指示的第二发送节点的个数小于传输时隙的个数,此时,某个或某些第二发送节点可以在多个传输时隙中向第二接收节点发送第二数据帧。可选地,传输节点列表的格式可以如表3所示:
表3
Figure PCTCN2017079143-appb-000003
其中,第二发送节点的节点标识可以为短地址,也可以为长地址。需要注意的是,在表2中,第二列中有些取值可能是是一样的,即该第二发送节点能使用多个不同的传输时隙向第二接收节点发送第二数据帧。
第三种:传输节点列表中指示的第二发送节点的个数大于传输时隙的个数,此时,仅排在列表首位(或前几位)的节点才能在传输信道上向第二接收节点发送第二数据帧。传输节点列表中的其他节点不能在传输时隙上向第二接收节点发送第二数据帧。另外,传输节点列表中的其他节点为第二接收节点已成功地接收到了这些节点发送的接入请求,通过将这些节点在传输节点列表中指示出来,它们便能获知自己的接入请求已被第二接收节点成功接收。可选地,传输节点列表的格式可以如表4所示(表4所示为仅队首节点才能传输第二数据帧的情况):
表4
Figure PCTCN2017079143-appb-000004
Figure PCTCN2017079143-appb-000005
综上所述,当传输节点列表中指示的第二发送节点的个数小于或等于传输时隙的个数,即采用表2和表3中的方式时,则处于传输节点列表中的第二发送节点将在分配给自己的传输时隙中向第二接收节点发送第二数据帧,当传输节点列表中指示的第二发送节点的个数大于传输时隙的个数,即采用表4中的方式时,则仅位于传输节点列表中队首(或前面的若干个)的第二发送节点在传输时隙上向第二接收节点发送第二数据帧。
值得注意的是,对于既不在接入节点列表中、也不在传输节点列表中的节点,若接入节点列表中的第一字段指示允许第二发送节点向第二接收节点发送接入请求,则该节点将随机选择一个接入时隙,并在该接入时隙上向第二接收节点发送接入请求;若第一字段指示不允许第二发送节点向第二接收节点发送接入请求,则该节点将不执行任何操作,等待接收下一个第一指示信息。
可选地,在第一种可能的实施方式中,在第二发送节点向第二接收节点发送接入请求和/或第二数据帧后,第二发送节点从第二接收节点获取到的第二指示信息可以包括如下两种格式:
第一种:第二指示信息指示了每个接入时隙上(一共有m个)的状态和传输时隙(一共有n个)的状态。在一种可能的实施方式中,第二指示信息的格式可以如表5所示:
表5
Figure PCTCN2017079143-appb-000006
Figure PCTCN2017079143-appb-000007
需要进行说明的是,在表示接入时隙的状态时,2个比特一共有4个状态,例如:“00”、“01”、“10”、“11”,这4个状态的任意3个状态都可以用于指示接入时隙“冲突”、“空闲”、“成功”的3种状态,对于选择哪种组合指示哪种状态,本申请不作限制。当然,还可以通过其他方式指示接入时隙上的三种状态。
第二种:第二指示信息指示了每个接入时隙上(一共有m个)的状态和更新后的传输节点列表。其中,接入时隙的状态及其取值方式和表5中类似,此处不再赘述,更新后的传输节点列表的状态及其取值方式和表2或表3或表4中类似,此处不再赘述。
另外,第二接收节点更新传输节点列表的一种可能的实施方法为:
若第二发送节点发送的接入请求成功被第二接收节点接收,则将该第二接收节点加入到传输节点列表中。若第二发送节点发送的第二数据帧成功地被第二接收节点接收,且该第二数据帧中没有指示该第二发送节点有更多第二数据帧需要发送,则将该第二发送节点从传输节点列表中删除。若第二发送节点发送的第二数据帧成功被第二接收节点接收,且 该第二数据帧中指示该第二发送节点有更多第二数据帧需要发送,则根据预设规则将该第二发送节点进行处理,具体地,预设规则可以为:规则1,第二接收节点将等到第二发送节点不再指示有更多第二数据帧需要发送的时候,将该第二发送节点直接从传输节点列表中删除;规则2,第二接收节点在连续接收到第二发送节点发送的N(N为大于或等于1的整数)个第二数据帧之后,尽管第二数据帧中指示该第二发送节点有更多第二数据帧需要发送,第二接收节点将该第二发送节点从传输节点列表的队首移动到其它位置。
可选地,如果第一接收节点也有数据帧需要发送给第二接收节点,则第一接收节点在回复给第二接收节点的确认帧中指示这一信息,而无需再在接入信道上向第二接收节点专门发送接入请求。这样可以减少网络中需要发送接入请求的节点数量,降低接入请求冲突的概率,进一步提升网络吞吐量。
可选地,如果第二发送节点后续还有更多的第二数据帧需要发送给第二接收节点,则第二发送节点在此次发送的第二数据帧中指示这一信息,而无需再在接入信道上向第二发送节点专门发送接入请求。这样可以减少网络中需要发送接入请求的节点数量,降低接入请求冲突的概率,进一步提升网络吞吐量。
综上所述,本申请实施例提供的全双工传输方法,与现有技术中基于CSMA/CA的方式相比,提高了系统的稳定性,而且提高了系统的吞吐量、降低了第二发送节点的接入时延。另外,第二接收节点可以根据第二发送节点利用接入信道和传输信道的情况,灵活调整和配置第二传输信道的设置情况,使得系统的灵活性大大增加,进一步提升了系统吞吐量。
(2)在第二种可能的实施方式中,接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息,在信道配置信息指示信道包括至少一个接入时隙时,第二发送节点根据第一指示信息向第二接收节点发送接入请求包括:第i个第二发送节点在第i个接入时隙上向第二接收节点发送接入请求,其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
此种实施方式下,第二发送节点存在2种不同的状态,具体为:(1)接入状态,此时第二发送节点尚未向第二接收节点发送过接入请求,等待向第二接收节点发送接入请求;(2)传输状态,此时第二发送节点已经成功向第二接收节点发送了接入请求,等待第二接收节点分配传输时隙进行数据发送。
处于接入状态的第二发送节点根据第一指示信息中的接入节点列表,判断自己是否被可以在接入时隙上向第二接收节点发送接入请求。只有位于接入节点列表中的第二发送节点,才能在第二接收节点指定的接入时隙上向第二接收节点发送接入请求。第二接收节点将那些节点放在接入节点列表中,取决于第二接收节点所采用的轮询策略。比如,第二接收节点可以将网络中的所有节点(除第二接收节点自身外)都让入接入节点列表中。或者,第二接收节点根据自己所掌握的拓扑信息仅将自己的一跳邻居节点放入接入节点列表中。或者,第二接收节点通过其他管理信息了解到哪些节点有数据需要发送给自己,则第二接收节点将这些有传输需求的节点放入节点列表中。
处于传输状态的第二发送节点,它们已经发送过接入请求,并且发送成功,因此它们进入传输节点列表,第二接收节点将会为这类第二发送节点分配传输时隙,进行第二数据帧的发送。传输节点列表中,若该第二发送节点排在传输节点列表的队首或前几位,则将 在当前这个传输时隙中就已经可以发送第二数据帧,若该第二发送节点排在传输节点列表的后面,则将需要等到起处于传输节点列表的队首时,再向第二接收节点发送第二数据帧。
具体地,在这种实施方式中,处于接入节点列表中的第二发送节点将在分配给自己的接入时隙上向第二接收节点发送接入请求,如第1个第二发送节点在第1个接入时隙上向第二接收节点发送接入请求,第2个第二发送节点在第2个接入时隙上向第二接收节点发送接入请求等。另外,若第二发送节点没有第二数据帧需要发送给第二接收节点,则第二发送节点将不执行任何操作,或者,第二发送节点也可以向第二接收节点发送接入请求,但是接入请求中指示自己无第二数据帧需要发送给第二接收节点。
其中,假设接入信道的接入时隙一共有m个,则接入节点列表的一种可选地实施方案如表6所示:
表6
Figure PCTCN2017079143-appb-000008
其中,第二发送节点的节点标识可以为短地址,也可以为长地址。
另外,在第二种实施方式中第二发送节点发送第二数据帧的具体方式,与第一种实施方式中第二发送节点发送第二数据帧时的具体方式类似,此处不再赘述。
可选地,在第二种实施方式中,在第二发送节点向第二接收节点发送接入请求和/或第二数据帧后,第二发送节点从第二接收节点获取到的第二指示信息可以包括如下两种格式:
第一种:第二指示信息指示了每个接入时隙上(一共有m个)的状态和传输时隙(一共有n个)的状态。可选地,第二指示信息的格式可以如表7所示:
表7
Figure PCTCN2017079143-appb-000009
Figure PCTCN2017079143-appb-000010
Figure PCTCN2017079143-appb-000011
第二种:第二指示信息指示了每个接入时隙上(一共有m个)的状态和更新后的传输节点列表。其中,接入时隙的状态及其取值方式和表7中类似,此处不再赘述,更新后的传输节点列表的状态及其取值方式和表2或表3或表4中类似,此处不再赘述。
可选地,如果第二发送节点后续还有更多的第二数据帧需要发送给第二接收节点,则第二发送节点在此次发送的第二数据帧中指示这一信息,而无需再在接入信道上向第二发送节点专门发送接入请求。这样可以减少网络中需要发送接入请求的节点数量,进一步提升网络吞吐量。
另外,第二接收节点更新传输节点列表的实施方法与第一种可能的实施方式中第二接收节点更新传输节点列表的方法类似,此处不再赘述。
(3)在第三种可能的实施方式中,全双工传输机会2不划分接入信道,仅有传输信道,此时,第一指示信息中将不包括接入信道,因而也不包括接入时隙。在这种情况下,传输节点列表指示允许向第二接收节点发送第二数据帧的第二发送节点的信息,在信道配置信息指示信道包括至少一个传输时隙时,第二发送节点根据第一指示信息向第二接收节点发送第二数据帧包括:若第二发送节点有第二数据帧需要发送给第二接收节点,则第二发送节点在传输时隙开始后向第二接收节点发送第二数据帧。
具体地,处于传输节点列表中的第二发送节点若有第二数据帧需要发送给第二接收节点时,则第二发送节点将在分配给自己的传输时隙开始后,向第二接收节点发送第二数据帧,如根据传输节点列表的格式,第二发送节点1将可以在传输信道上第一个发送第二数据帧,第二发送节点2将可以在传输信道上第二个发送第二数据帧等;如果第二发送节点没有第二数据帧需要发送给第二接收节点,则该第二发送节点将不执行任何操作;如果当前的传输时隙不是分配给某个第二发送节点的传输时隙,则该第二发送节点需要在传输时隙开始处侦听其他第二发送节点发送给第二接收节点的第二数据帧的帧头,并根据第二数据帧的帧头中的“帧长”字段判断当前传输时隙在何时结束以及下一个传输时隙在何时开始,以确定出自己的传输时隙。
其中,假设第二传输机会的传输信道由m个第二发送节点所共享,则传输节点列表的一种可选地实施方案如表8所示:
表8
Figure PCTCN2017079143-appb-000012
Figure PCTCN2017079143-appb-000013
其中,第二发送节点的节点标识可以为短地址,也可以为长地址。
另外,不在传输节点列表中的节点将不执行任何操作,将等待接收下一个第一指示信息。
可选地,在第三种可能的实施方式中,且第二发送节点向第二接收节点发送接入请求和/或第二数据帧后,第二发送节点从第二接收节点获取到的第二指示信息将用于指示每个传输时隙第二接收节点所接收到的第二数据帧的接收状态,此时,由于第二指示信息是对第二发送节点发送的第二数据帧的接收状态的反馈,因此第二指示信息可以采用和第一接收节点向第一发送节点发送的确认帧相同的格式,可选地,第二指示信息的格式可以如表9所示:
表9
Figure PCTCN2017079143-appb-000014
Figure PCTCN2017079143-appb-000015
本申请实施例提供的全双工传输方法,在不同的应用场景中,第二发送节点将根据不同的方式向第二接收节点发送接入请求和/或第二数据帧,由此可以增加全双工传输的灵活度。
图8为本申请提供的发送节点实施例一的结构示意图,如图8所示,发送节点为第二发送节点,该发送节点10包括:
发送模块11,用于在第一发送节点向第一接收节点发送第一数据帧时,根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧,所述第一发送节点和所述第二接收节点是同一个节点,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;
获取模块12,用于从所述第二接收节点获取第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。
可选地,上述发送模块11可以是发送节点中的一个发送器或者发送电路,获取模块12可以是发送节点中的一个接收器或者接收电路,或者该发送模块11和获取模块12还可以集成处理器的部分功能。
本实施例中提供的发送节点,可以用于执行前述任一方法实施例中发送节点侧的技术方案,其实现原理和技术效果与方法实施例类似,在此不再赘述。
可选地,所述第一指示信息还包括传输结束时间,所述传输结束时间用于指示所述第二发送节点向所述第二接收节点发送所述接入请求和/或所述第二数据帧的最晚结束时间,所述传输结束时间不晚于所述第一发送节点向所述第一接收节点发送所述第一数据帧的结束时间。
可选地,所述获取模块12具体用于:
在所述第一接收节点向所述第一发送节点发送确认帧时,接收所述第二接收节点发送的所述第二指示信息;
或者,
在所述第一发送节点下一次向所述第一接收节点发送第一数据帧时,从所述第二接收节点获取所述第二指示信息,所述第二指示信息携带在所述第一数据帧中。
可选地,所述获取模块12还用于:
从所述第二接收节点处获取所述第一指示信息,所述第一指示信息携带在所述第一数据帧中;
或者,
从所述第二接收节点处获取所述第一指示信息,所述第一指示信息携带在上一个第二指示信息中,所述上一个第二指示信息为所述第一接收节点上一次向所述第一发送节点发送确认帧时,所述第二接收节点发送给所述第二发送节点的第二指示信息。
可选地,所述第一指示信息还包括信道配置信息,所述信道配置信息用于指示如下信息中的至少一个:
信道中是否包括接入信道和/或是否包括传输信道;所述信道为所述第二发送节点和所述第二接收节点之间的信道;所述接入信道为所述第二发送节点向所述第二接收节点发 送所述接入请求的信道,所述传输信道为所述第二发送节点向所述第二接收节点发送所述第二数据帧的信道;
若所述信道包括接入信道,则所述接入信道中接入时隙的个数;和
若所述信道包括传输信道,则所述传输信道中传输时隙的个数。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙;
所述发送模块11具体用于:
若所述接入节点列表包括第一字段,且所述第一字段指示允许所述第二发送节点发送所述接入请求,则随机选择接入时隙,并在所述接入时隙上向所述第二接收节点发送所述接入请求;
或者,
若所述接入节点列表包括所述第一字段和第二字段,其中,所述第二字段用于指示冲突队列,所述冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序,则排在冲突队列队首的第二发送节点随机选择接入时隙并在所述接入时隙上向所述第二接收节点发送所述接入请求。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙,所述接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息;
所述发送模块11具体用于:
第i个第二发送节点在第i个接入时隙上向所述第二接收节点发送所述接入请求,其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
所述发送模块11,具体用于:
所述传输节点列表中的第二发送节点在所述传输时隙上向第二接收节点发送所述第二数据帧。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
所述发送模块11具体用于:
若所述第二发送节点有第二数据帧需要发送给所述第二接收节点,所述第二发送节点在所述传输时隙开始后向所述第二接收节点发送所述第二数据帧。
可选地,所述第一数据帧包括第三字段,所述第三字段用于指示所述第一数据帧中是否携带有所述第一指示信息。
本实施例中提供的发送节点,可以用于执行前述任一方法实施例中发送节点侧的技术方案,其实现原理和技术效果与方法实施例类似,在此不再赘述。
图9为本申请提供的接收节点实施例一的结构示意图,如图9所示,接收节点为第二接收节点,该接收节点20包括:
接收模块21,用于在第一发送节点向第一接收节点发送第一数据帧时,接收第二发送节点根据第一指示信息发送的接入请求和/或第二数据帧,其中,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;所述第一发送节点和所述第二接收节点是同一个节点;
发送模块22,用于向所述第二发送节点发送第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。
可选地,上述接收模块21可以是接收节点中的一个接收器或者接收电路,发送模块22可以是接收节点中的一个发送器或者发送电路,或者该接收模块21和发送模块22还可以集成处理器的部分功能。
本实施例中提供的接收节点,可以用于执行前述任一方法实施例中接收节点侧的技术方案,其实现原理和技术效果与方法实施例类似,在此不再赘述。
可选地,所述第一指示信息还包括传输结束时间,所述传输结束时间用于指示所述第二发送节点向所述第二接收节点发送所述接入请求和/或所述第二数据帧的最晚结束时间,所述传输结束时间不晚于所述第一发送节点向所述第一接收节点发送所述第一数据帧的结束时间。
可选地,所述发送模块22,具体用于:
在所述第一接收节点向所述第一发送节点发送确认帧时,向所述第二发送节点发送所述第二指示信息;
或者,
在所述第一发送节点下一次向所述第一接收节点发送第一数据帧时,向所述第二发送节点发送所述第二指示信息,所述第二指示信息携带在第一数据帧中。
可选地,所述发送模块22,还用于:
向所述第二发送节点发送所述第一指示信息,所述第一指示信息携带在第一发送节点发送给第一接收节点的第一数据帧中;
或者,
在所述第一接收节点上一次向所述第一发送节点发送确认帧时,向所述第二发送节点发送第二指示信息,所述第二指示信息中携带有所述第一指示信息。
可选地,所述第一指示信息还包括信道配置信息,所述信道配置信息用于指示如下信息中的至少一个:
信道中是否包括接入信道和/或是否包括传输信道;所述信道为所述第二发送节点和所述第二接收节点之间的信道;所述接入信道为所述第二发送节点向所述第二接收节点发送所述接入请求的信道,所述传输信道为所述第二发送节点向所述第二接收节点发送所述第二数据帧的信道;
若所述信道包括接入信道,则所述接入信道中接入时隙的个数;和
若所述信道包括传输信道,则所述传输信道中传输时隙的个数。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙;
所述接收模块21,具体用于:
若所述接入节点列表包括第一字段,且所述第一字段指示允许所述第二发送节点发送所述接入请求,则在接入时隙上接收所述第二发送节点发送的所述接入请求,所述接入时隙为所述第二发送节点随机选择的接入时隙;
或者,
若所述接入节点列表包括所述第一字段和第二字段,其中,所述第二字段用于指示冲突队列,所述冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发 送节点重发接入请求的先后顺序,则在接入时隙上接收所述第二发送节点发送的所述接入请求,所述接入时隙为排在冲突队列队首的第二发送节点随机选择的接入时隙。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙,所述接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息;
所述接收模块21,具体用于:
在第i个接入时隙上接收第i个第二发送节点发送的所述接入请求,其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
所述接收模块21,具体用于:
接收在所述传输节点列表中的第二发送节点在所述传输时隙上发送的所述第二数据帧。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第一发送节点发送所述第二数据帧的第二发送节点信息;
所述接收模块21,具体用于:
若所述第二发送节点有第二数据帧需要发送给所述第二接收节点,则接收所述第二发送节点在所述传输时隙开始后发送的所述第二数据帧。
可选地,所述第一数据帧包括第三字段,所述第三字段用于指示所述第一数据帧中是否携带有所述第一指示信息。
本实施例中提供的接收节点,可以用于执行前述任一方法实施例中接收节点侧的技术方案,其实现原理和技术效果与方法实施例类似,在此不再赘述。
图10为本申请实施例提供的发送节点实施例二的结构示意图。如图10所示,该发送节点可以包括发送器30、处理器31、存储器32、接收器34和至少一个通信总线33。通信总线33用于实现元件之间的通信连接。存储器32可能包含高速RAM存储器,也可能还包括非易失性存储NVM,例如至少一个磁盘存储器,存储器32中可以存储各种程序,用于完成各种处理功能以及实现本实施例的方法步骤。本实施例中的接收器34可以为相应的具有通信功能和接收信息功能的输入接口,还可以为发送节点上的射频模块或者基带模块,本实施例中的发送器30可以为相应的具有通信功能和发送信息功能的输出接口,还可以为发送节点上的射频模块或者基带模块。可选的,该发送器30和接收器34可以集成在一个通信接口中,也可以分别为独立的两个通信接口。
本实施例中,发送器30,用于在第一发送节点向第一接收节点发送第一数据帧时,第二发送节点根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧,所述第一发送节点和所述第二接收节点是同一个节点,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;
接收器34,用于从所述第二接收节点获取第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。
可选地,所述第一指示信息还包括传输结束时间,所述传输结束时间用于指示所述第二发送节点向所述第二接收节点发送所述接入请求和/或所述第二数据帧的最晚结束时间,所述传输结束时间不晚于所述第一发送节点向所述第一接收节点发送所述第一数据帧的 结束时间。
可选地,所述接收器34具体用于:
在所述第一接收节点向所述第一发送节点发送确认帧时,接收所述第二接收节点发送的所述第二指示信息;
或者,
在所述第一发送节点下一次向所述第一接收节点发送第一数据帧时,从所述第二接收节点获取所述第二指示信息,所述第二指示信息携带在所述第一数据帧中。
可选地,所述处理器31,用于:
从所述第二接收节点处获取所述第一指示信息,所述第一指示信息携带在所述第一数据帧中;
或者,
从所述第二接收节点处获取所述第一指示信息,所述第一指示信息携带在上一个第二指示信息中,所述上一个第二指示信息为所述第一接收节点上一次向所述第一发送节点发送确认帧时,所述第二接收节点发送给所述第二发送节点的第二指示信息。
可选地,所述第一指示信息还包括信道配置信息,所述信道配置信息用于指示如下信息中的至少一个:
信道中是否包括接入信道和/或是否包括传输信道;所述信道为所述第二发送节点和所述第二接收节点之间的信道;所述接入信道为所述第二发送节点向所述第二接收节点发送所述接入请求的信道,所述传输信道为所述第二发送节点向所述第二接收节点发送所述第二数据帧的信道;
若所述信道包括接入信道,则所述接入信道中接入时隙的个数;和
若所述信道包括传输信道,则所述传输信道中传输时隙的个数。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙;
所述发送器30,具体用于:
若所述接入节点列表包括第一字段,且所述第一字段指示允许所述第二发送节点发送所述接入请求,则随机选择接入时隙,并在所述接入时隙上向所述第二接收节点发送所述接入请求;
或者,
若所述接入节点列表包括所述第一字段和第二字段,其中,所述第二字段用于指示冲突队列,所述冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序,则排在冲突队列队首的第二发送节点随机选择接入时隙并在所述接入时隙上向所述第二接收节点发送所述接入请求。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙,所述接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息;
所述发送器30,具体用于:
第i个第二发送节点在第i个接入时隙上向所述第二接收节点发送所述接入请求,其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
所述发送器30,具体用于:
所述传输节点列表中的第二发送节点在所述传输时隙上向第二接收节点发送所述第二数据帧。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
所述发送器30,具体用于:
若所述第二发送节点有第二数据帧需要发送给所述第二接收节点,则在所述传输时隙开始后向所述第二接收节点发送所述第二数据帧。
可选地,所述第一数据帧包括第三字段,所述第三字段用于指示所述第一数据帧中是否携带有所述第一指示信息。
本实施例中提供的发送节点,可以用于执行前述任一方法实施例中发送节点侧的技术方案,其实现原理和技术效果与方法实施例类似,在此不再赘述。
图11为本申请实施例提供的接收节点实施例二的结构示意图。如图11所示,该接收节点可以包括发送器40、处理器41、存储器42、接收器44和至少一个通信总线43。通信总线43用于实现元件之间的通信连接。存储器42可能包含高速RAM存储器,也可能还包括非易失性存储NVM,例如至少一个磁盘存储器,存储器42中可以存储各种程序,用于完成各种处理功能以及实现本实施例的方法步骤。本实施例中的接收器44可以为相应的具有通信功能和接收信息功能的输入接口,还可以为接收节点上的射频模块或者基带模块,本实施例中的发送器40可以为相应的具有通信功能和发送信息功能的输出接口,还可以为接收节点上的射频模块或者基带模块。可选的,该发送器40和接收器44可以集成在一个通信接口中,也可以分别为独立的两个通信接口。
本实施例中,接收器44,用于在第一发送节点向第一接收节点发送第一数据帧时,接收第二发送节点根据第一指示信息发送的接入请求和/或第二数据帧,其中,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;所述第一发送节点和所述第二接收节点是同一个节点;
发送器40,用于向所述第二发送节点发送第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。
可选地,所述第一指示信息还包括传输结束时间,所述传输结束时间用于指示所述第二发送节点向所述第二接收节点发送所述接入请求和/或所述第二数据帧的最晚结束时间,所述传输结束时间不晚于所述第一发送节点向所述第一接收节点发送所述第一数据帧的结束时间。
可选地,所述发送器40,具体用于:
在所述第一接收节点向所述第一发送节点发送确认帧时,向所述第二发送节点发送所述第二指示信息;
或者,
在所述第一发送节点下一次向所述第一接收节点发送第一数据帧时,向所述第二发送节点发送所述第二指示信息,所述第二指示信息携带在第一数据帧中。
可选地,所述发送器40,具体用于:
向所述第二发送节点发送所述第一指示信息,所述第一指示信息携带在第一发送节点 发送给第一接收节点的第一数据帧中;
或者,
在所述第一接收节点上一次向所述第一发送节点发送确认帧时,向所述第二发送节点发送第二指示信息,所述第二指示信息中携带有所述第一指示信息。
可选地,所述第一指示信息还包括信道配置信息,所述信道配置信息用于指示如下信息中的至少一个:
信道中是否包括接入信道和/或是否包括传输信道;所述信道为所述第二发送节点和所述第二接收节点之间的信道;所述接入信道为所述第二发送节点向所述第二接收节点发送所述接入请求的信道,所述传输信道为所述第二发送节点向所述第二接收节点发送所述第二数据帧的信道;
若所述信道包括接入信道,则所述接入信道中接入时隙的个数;和
若所述信道包括传输信道,则所述传输信道中传输时隙的个数。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙;
所述接收器44,具体用于:
若所述接入节点列表包括第一字段,且所述第一字段指示允许所述第二发送节点发送所述接入请求,则在接入时隙上接收所述第二发送节点发送的所述接入请求,所述接入时隙为所述第二发送节点随机选择的接入时隙;
或者,
若所述接入节点列表包括所述第一字段和第二字段,其中,所述第二字段用于指示冲突队列,所述冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序,则在接入时隙上接收所述第二发送节点发送的所述接入请求,所述接入时隙为排在冲突队列队首的第二发送节点随机选择的接入时隙。
可选地,所述信道配置信息指示所述信道包括至少一个接入时隙,所述接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息;
所述接收器44,具体用于:
在第i个接入时隙上接收第i个第二发送节点发送的所述接入请求,其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
所述接收器44,具体用于:
接收在所述传输节点列表中的第二发送节点在所述传输时隙上发送的所述第二数据帧。
可选地,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第一发送节点发送所述第二数据帧的第二发送节点信息;
所述接收器44,具体用于:
若所述第二发送节点有第二数据帧需要发送给所述第二接收节点,接收所述第二发送节点在所述传输时隙开始后发送的所述第二数据帧。
可选地,所述第一数据帧包括第三字段,所述第三字段用于指示所述第一数据帧中是否携带有所述第一指示信息。
本实施例中提供的接收节点,可以用于执行前述任一方法实施例中接收节点侧的技术方案,其实现原理和技术效果与方法实施例类似,在此不再赘述。
本申请还提供一种可读存储介质,可读存储介质中存储有指令,当发送节点的至少一个处理器执行该指令时,发送节点执行上述任一方法实施例中提供的全双工传输方法。
本申请还提供一种可读存储介质,可读存储介质中存储有指令,当接收节点的至少一个处理器执行该指令时,接收节点执行上述任一方法实施例中提供的全双工传输方法。
本申请还提供一种程序产品,该程序产品包括指令,该指令存储在可读存储介质中。发送节点的至少一个处理器可以从可读存储介质读取该指令,并执行该指令使得发送节点实施任一方法实施例中提供的全双工传输方法。
本申请还提供一种程序产品,该程序产品包括指令,该指令存储在可读存储介质中。接收节点的至少一个处理器可以从可读存储介质读取该指令,并执行该指令使得接收节点实施上述任一方法实施例中提供的全双工传输方法。
在发送节点或者接收节点的具体实现中,应理解,处理器可以是中央处理单元(英文:Central Processing Unit,简称:CPU),还可以是其他通用处理器、数字信号处理器(英文:Digital Signal Processor,简称:DSP)、专用集成电路(英文:Application Specific Integrated Circuit,简称:ASIC)等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。
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可读取存储器中。该程序在执行时,执行包括上述各方法实施例的步骤;而前述的存储器(存储介质)包括:只读存储器(英文:read-only memory,缩写:ROM)、RAM、快闪存储器、硬盘、固态硬盘、磁带(英文:magnetic tape)、软盘(英文:floppy disk)、光盘(英文:optical disc)及其任意组合。
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 (38)

  1. 一种全双工传输方法,其特征在于,包括:
    在第一发送节点向第一接收节点发送第一数据帧时,第二发送节点根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧,所述第一发送节点和所述第二接收节点是同一个节点,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;
    所述第二发送节点从所述第二接收节点获取第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。
  2. 根据权利要求1所述的方法,其特征在于,所述第一指示信息还包括传输结束时间,所述传输结束时间用于指示所述第二发送节点向所述第二接收节点发送所述接入请求和/或所述第二数据帧的最晚结束时间,所述传输结束时间不晚于所述第一发送节点向所述第一接收节点发送所述第一数据帧的结束时间。
  3. 根据权利要求1或2所述的方法,其特征在于,所述第二发送节点从所述第二接收节点获取第二指示信息,包括:
    在所述第一接收节点向所述第一发送节点发送确认帧时,所述第二发送节点接收所述第二接收节点发送的所述第二指示信息;
    或者,
    在所述第一发送节点下一次向所述第一接收节点发送第一数据帧时,所述第二发送节点从所述第二接收节点获取所述第二指示信息,所述第二指示信息携带在所述第一数据帧中。
  4. 根据权利要求1-3任一项所述的方法,其特征在于,所述第二发送节点根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧之前,所述方法还包括:
    所述第二发送节点从所述第二接收节点处获取所述第一指示信息,所述第一指示信息携带在所述第一数据帧中;
    或者,
    所述第二发送节点从所述第二接收节点处获取所述第一指示信息,所述第一指示信息携带在上一个第二指示信息中,所述上一个第二指示信息为所述第一接收节点上一次向所述第一发送节点发送确认帧时,所述第二接收节点发送给所述第二发送节点的第二指示信息。
  5. 根据权利要求1-4任一项所述的方法,其特征在于,所述第一指示信息还包括信道配置信息,所述信道配置信息用于指示如下信息中的至少一个:
    信道中是否包括接入信道和/或是否包括传输信道;所述信道为所述第二发送节点和所述第二接收节点之间的信道;所述接入信道为所述第二发送节点向所述第二接收节点发送所述接入请求的信道,所述传输信道为所述第二发送节点向所述第二接收节点发送所述第二数据帧的信道;
    若所述信道包括接入信道,则所述接入信道中接入时隙的个数;和
    若所述信道包括传输信道,则所述传输信道中传输时隙的个数。
  6. 根据权利要求5所述的方法,其特征在于,所述信道配置信息指示所述信道包括至少一个接入时隙;
    第二发送节点根据第一指示信息向第二接收节点发送接入请求,包括:
    若所述接入节点列表包括第一字段,且所述第一字段指示允许所述第二发送节点发送所述接入请求,则所述第二发送节点随机选择接入时隙,并在所述接入时隙上向所述第二接收节点发送所述接入请求;
    或者,
    若所述接入节点列表包括所述第一字段和第二字段,其中,所述第二字段用于指示冲突队列,所述冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序,则排在冲突队列队首的第二发送节点随机选择接入时隙并在所述接入时隙上向所述第二接收节点发送所述接入请求。
  7. 根据权利要求5所述的方法,其特征在于,所述信道配置信息指示所述信道包括至少一个接入时隙,所述接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息;
    第二发送节点根据第一指示信息向第二接收节点发送接入请求,包括:
    第i个第二发送节点在第i个接入时隙上向所述第二接收节点发送所述接入请求,其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
  8. 根据权利要求6或7所述的方法,其特征在于,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
    第二发送节点根据第一指示信息向第二接收节点发送第二数据帧,包括:
    所述传输节点列表中的第二发送节点在所述传输时隙上向第二接收节点发送所述第二数据帧。
  9. 根据权利要求5所述的方法,其特征在于,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
    第二发送节点根据第一指示信息向第二接收节点发送第二数据帧,包括:
    若所述第二发送节点有第二数据帧需要发送给所述第二接收节点,所述第二发送节点在所述传输时隙开始后向所述第二接收节点发送所述第二数据帧。
  10. 根据权利要求1-9任一项所述的方法,其特征在于,所述第一数据帧包括第三字段,所述第三字段用于指示所述第一数据帧中是否携带有所述第一指示信息。
  11. 一种全双工传输方法,其特征在于,包括:
    在第一发送节点向第一接收节点发送第一数据帧时,第二接收节点接收第二发送节点根据第一指示信息发送的接入请求和/或第二数据帧,其中,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;所述第一发送节点和所述第二接收节点是同一个节点;
    所述第二接收节点向所述第二发送节点发送第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。
  12. 根据权利要求11所述的方法,其特征在于,所述第一指示信息还包括传输结束时间,所述传输结束时间用于指示所述第二发送节点向所述第二接收节点发送所述接入请求和/或所述第二数据帧的最晚结束时间,所述传输结束时间不晚于所述第一发送节点向所述第一接收节点发送所述第一数据帧的结束时间。
  13. 根据权利要求11或12所述的方法,其特征在于,所述第二接收节点向所述第二发送节点发送第二指示信息,包括:
    在所述第一接收节点向所述第一发送节点发送确认帧时,所述第二接收节点向所述第二发送节点发送所述第二指示信息;
    或者,
    在所述第一发送节点下一次向所述第一接收节点发送第一数据帧时,所述第二接收节点向所述第二发送节点发送所述第二指示信息,所述第二指示信息携带在第一数据帧中。
  14. 根据权利要求11-13任一项所述的方法,其特征在于,所述第二接收节点接收第二发送节点根据第一指示信息发送的接入请求和/或第二数据帧之前,所述方法还包括:
    所述第二接收节点向所述第二发送节点发送所述第一指示信息,所述第一指示信息携带在第一发送节点发送给第一接收节点的第一数据帧中;
    或者,
    在所述第一接收节点上一次向所述第一发送节点发送确认帧时,所述第二接收节点向所述第二发送节点发送第二指示信息,所述第二指示信息中携带有所述第一指示信息。
  15. 根据权利要求11-14任一项所述的方法,其特征在于,所述第一指示信息还包括信道配置信息,所述信道配置信息用于指示如下信息中的至少一个:
    信道中是否包括接入信道和/或是否包括传输信道;所述信道为所述第二发送节点和所述第二接收节点之间的信道;所述接入信道为所述第二发送节点向所述第二接收节点发送所述接入请求的信道,所述传输信道为所述第二发送节点向所述第二接收节点发送所述第二数据帧的信道;
    若所述信道包括接入信道,则所述接入信道中接入时隙的个数;和
    若所述信道包括传输信道,则所述传输信道中传输时隙的个数。
  16. 根据权利要求15所述的方法,其特征在于,所述信道配置信息指示所述信道包括至少一个接入时隙;
    第二接收节点接收第二发送节点根据第一指示信息发送的接入请求,包括:
    若所述接入节点列表包括第一字段,且所述第一字段指示允许所述第二发送节点发送所述接入请求,则所述第二接收节点在接入时隙上接收所述第二发送节点发送的所述接入请求,所述接入时隙为所述第二发送节点随机选择的接入时隙;
    或者,
    若所述接入节点列表包括所述第一字段和第二字段,其中,所述第二字段用于指示冲突队列,所述冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序,则所述第二接收节点在接入时隙上接收所述第二发送节点发送的所述接入请求,所述接入时隙为排在冲突队列队首的第二发送节点随机选择的接入时隙。
  17. 根据权利要求15所述的方法,其特征在于,所述信道配置信息指示所述信道包括至少一个接入时隙,所述接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息;
    第二接收节点接收第二发送节点根据第一指示信息发送的接入请求,包括:
    所述第二接收节点在第i个接入时隙上接收第i个第二发送节点发送的所述接入请求, 其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
  18. 根据权利要求16或17所述的方法,其特征在于,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
    第二接收节点接收第二发送节点根据第一指示信息发送的第二数据帧,包括:
    所述第二接收节点接收在所述传输节点列表中的第二发送节点在所述传输时隙上发送的所述第二数据帧。
  19. 根据权利要求15所述的方法,其特征在于,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第一发送节点发送所述第二数据帧的第二发送节点信息;
    第二接收节点接收第二发送节点根据第一指示信息发送的第二数据帧,包括:
    若所述第二发送节点有第二数据帧需要发送给所述第二接收节点,所述第二接收节点接收所述第二发送节点在所述传输时隙开始后发送的所述第二数据帧。
  20. 根据权利要求11-19任一项所述的方法,其特征在于,所述第一数据帧包括第三字段,所述第三字段用于指示所述第一数据帧中是否携带有所述第一指示信息。
  21. 一种发送节点,其特征在于,所述发送节点为第二发送节点,所述第二发送节点包括:
    发送模块,用于在第一发送节点向第一接收节点发送第一数据帧时,根据第一指示信息向第二接收节点发送接入请求和/或第二数据帧,所述第一发送节点和所述第二接收节点是同一个节点,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;
    获取模块,用于从所述第二接收节点获取第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。
  22. 根据权利要求21所述的发送节点,其特征在于,所述第一指示信息还包括传输结束时间,所述传输结束时间用于指示所述第二发送节点向所述第二接收节点发送所述接入请求和/或所述第二数据帧的最晚结束时间,所述传输结束时间不晚于所述第一发送节点向所述第一接收节点发送所述第一数据帧的结束时间。
  23. 根据权利要求21或22所述的发送节点,其特征在于,所述获取模块具体用于:
    在所述第一接收节点向所述第一发送节点发送确认帧时,接收所述第二接收节点发送的所述第二指示信息;
    或者,
    在所述第一发送节点下一次向所述第一接收节点发送第一数据帧时,从所述第二接收节点获取所述第二指示信息,所述第二指示信息携带在所述第一数据帧中。
  24. 根据权利要求21-23任一项所述的发送节点,其特征在于,所述获取模块还用于:
    从所述第二接收节点处获取所述第一指示信息,所述第一指示信息携带在所述第一数据帧中;
    或者,
    从所述第二接收节点处获取所述第一指示信息,所述第一指示信息携带在上一个第二指示信息中,所述上一个第二指示信息为所述第一接收节点上一次向所述第一发送节点发送确认帧时,所述第二接收节点发送给所述第二发送节点的第二指示信息。
  25. 根据权利要求21-24任一项所述的发送节点,其特征在于,所述第一指示信息还包括信道配置信息,所述信道配置信息用于指示如下信息中的至少一个:
    信道中是否包括接入信道和/或是否包括传输信道;所述信道为所述第二发送节点和所述第二接收节点之间的信道;所述接入信道为所述第二发送节点向所述第二接收节点发送所述接入请求的信道,所述传输信道为所述第二发送节点向所述第二接收节点发送所述第二数据帧的信道;
    若所述信道包括接入信道,则所述接入信道中接入时隙的个数;和
    若所述信道包括传输信道,则所述传输信道中传输时隙的个数。
  26. 根据权利要求25所述的发送节点,其特征在于,所述信道配置信息指示所述信道包括至少一个接入时隙;
    所述发送模块具体用于:
    若所述接入节点列表包括第一字段,且所述第一字段指示允许所述第二发送节点发送所述接入请求,则随机选择接入时隙,并在所述接入时隙上向所述第二接收节点发送所述接入请求;
    或者,
    若所述接入节点列表包括所述第一字段和第二字段,其中,所述第二字段用于指示冲突队列,所述冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序,则排在冲突队列队首的第二发送节点随机选择接入时隙并在所述接入时隙上向所述第二接收节点发送所述接入请求。
  27. 根据权利要求25所述的发送节点,其特征在于,所述信道配置信息指示所述信道包括至少一个接入时隙,所述接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息;
    所述发送模块具体用于:
    第i个第二发送节点在第i个接入时隙上向所述第二接收节点发送所述接入请求,其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
  28. 根据权利要求26或27所述的发送节点,其特征在于,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
    所述发送模块,具体用于:
    所述传输节点列表中的第二发送节点在所述传输时隙上向第二接收节点发送所述第二数据帧。
  29. 根据权利要求25所述的发送节点,其特征在于,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
    所述发送模块具体用于:
    若所述第二发送节点有第二数据帧需要发送给所述第二接收节点,所述第二发送节点在所述传输时隙开始后向所述第二接收节点发送所述第二数据帧。
  30. 一种接收节点,其特征在于,所述接收节点为第二接收节点,所述第二接收节点包括:
    接收模块,用于在第一发送节点向第一接收节点发送第一数据帧时,接收第二发送节点根据第一指示信息发送的接入请求和/或第二数据帧,其中,所述第一指示信息包括接入节点列表或传输节点列表中的至少一个;所述第一发送节点和所述第二接收节点是同一个节点;
    发送模块,用于向所述第二发送节点发送第二指示信息,所述第二指示信息包含用于指示所述接入请求和/或所述第二数据帧是否发送成功的信息。
  31. 根据权利要求30所述的接收节点,其特征在于,所述第一指示信息还包括传输结束时间,所述传输结束时间用于指示所述第二发送节点向所述第二接收节点发送所述接入请求和/或所述第二数据帧的最晚结束时间,所述传输结束时间不晚于所述第一发送节点向所述第一接收节点发送所述第一数据帧的结束时间。
  32. 根据权利要求30或31所述的接收节点,其特征在于,所述发送模块,具体用于:
    在所述第一接收节点向所述第一发送节点发送确认帧时,向所述第二发送节点发送所述第二指示信息;
    或者,
    在所述第一发送节点下一次向所述第一接收节点发送第一数据帧时,向所述第二发送节点发送所述第二指示信息,所述第二指示信息携带在第一数据帧中。
  33. 根据权利要求30-32任一项所述的接收节点,其特征在于,所述发送模块,还用于:
    向所述第二发送节点发送所述第一指示信息,所述第一指示信息携带在第一发送节点发送给第一接收节点的第一数据帧中;
    或者,
    在所述第一接收节点上一次向所述第一发送节点发送确认帧时,向所述第二发送节点发送第二指示信息,所述第二指示信息中携带有所述第一指示信息。
  34. 根据权利要求30-33任一项所述的接收节点,其特征在于,所述第一指示信息还包括信道配置信息,所述信道配置信息用于指示如下信息中的至少一个:
    信道中是否包括接入信道和/或是否包括传输信道;所述信道为所述第二发送节点和所述第二接收节点之间的信道;所述接入信道为所述第二发送节点向所述第二接收节点发送所述接入请求的信道,所述传输信道为所述第二发送节点向所述第二接收节点发送所述第二数据帧的信道;
    若所述信道包括接入信道,则所述接入信道中接入时隙的个数;和
    若所述信道包括传输信道,则所述传输信道中传输时隙的个数。
  35. 根据权利要求34所述的接收节点,其特征在于,所述信道配置信息指示所述信道包括至少一个接入时隙;
    所述接收模块,具体用于:
    若所述接入节点列表包括第一字段,且所述第一字段指示允许所述第二发送节点发送所述接入请求,则在接入时隙上接收所述第二发送节点发送的所述接入请求,所述接入时隙为所述第二发送节点随机选择的接入时隙;
    或者,
    若所述接入节点列表包括所述第一字段和第二字段,其中,所述第二字段用于指示冲 突队列,所述冲突队列用于指示发送过接入请求、且所发送接入请求发生了冲突的第二发送节点重发接入请求的先后顺序,则在接入时隙上接收所述第二发送节点发送的所述接入请求,所述接入时隙为排在冲突队列队首的第二发送节点随机选择的接入时隙。
  36. 根据权利要求34所述的接收节点,其特征在于,所述信道配置信息指示所述信道包括至少一个接入时隙,所述接入节点列表指示允许向第二接收节点发送接入请求的第二发送节点信息;
    所述接收模块,具体用于:
    在第i个接入时隙上接收第i个第二发送节点发送的所述接入请求,其中,i小于或等于m,m为接入时隙的总个数,i和m均为正整数。
  37. 根据权利要求35或36所述的接收节点,其特征在于,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第二接收节点发送所述第二数据帧的第二发送节点信息;
    所述接收模块,具体用于:
    接收在所述传输节点列表中的第二发送节点在所述传输时隙上发送的所述第二数据帧。
  38. 根据权利要求34所述的接收节点,其特征在于,所述信道配置信息指示所述信道包括至少一个传输时隙;所述传输节点列表指示允许向第一发送节点发送所述第二数据帧的第二发送节点信息;
    所述接收模块,具体用于:
    若所述第二发送节点有第二数据帧需要发送给所述第二接收节点,则接收所述第二发送节点在所述传输时隙开始后发送的所述第二数据帧。
PCT/CN2017/079143 2017-03-31 2017-03-31 全双工传输方法及装置 WO2018176431A1 (zh)

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CN110463135B (zh) 2021-09-14

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