WO2023279359A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2023279359A1
WO2023279359A1 PCT/CN2021/105430 CN2021105430W WO2023279359A1 WO 2023279359 A1 WO2023279359 A1 WO 2023279359A1 CN 2021105430 W CN2021105430 W CN 2021105430W WO 2023279359 A1 WO2023279359 A1 WO 2023279359A1
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WO
WIPO (PCT)
Prior art keywords
node
transmission
information
indication information
data packet
Prior art date
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PCT/CN2021/105430
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English (en)
Chinese (zh)
Inventor
刘航
王键
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.)
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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/CN2021/105430 priority Critical patent/WO2023279359A1/fr
Priority to CN202180100071.7A priority patent/CN117597968A/zh
Publication of WO2023279359A1 publication Critical patent/WO2023279359A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the technical field of communication, and more specifically, to a communication method and device.
  • Short-range communication plays an important role in people's daily life. For example, there is a demand for short-range communication in fields such as smart terminals, smart homes, smart manufacturing, and smart cars.
  • Bluetooth is the most common short-distance communication method, especially the low-power (bluetooth low energy, BLE) version of Bluetooth, due to its low power consumption and low cost, it is widely used in mice, keyboards, wearable devices, and true wireless devices.
  • Stereo true wireless stereo, TWS
  • the concurrency capability of short-distance communication is weak. For example, when a new task arrives or service characteristics (such as service arrival period) change, there will be a transmission requirement for burst information (including more control information). Generally speaking, the priority of control information is higher, and the transmission of burst information may occupy the transmission resources configured for service transmission, affecting the normal transmission of services. Therefore, there is an urgent need for a method to improve the efficiency of service transmission while realizing burst information transmission.
  • Embodiments of the present application provide a communication method and device, which can realize burst information transmission and improve service transmission efficiency.
  • a communication method including: a second node receives first indication information and second indication information from a first node respectively, wherein the first indication information is used to determine a first transmission resource, and the second indication information is used to To determine multiple second transmission resources, the multiple second transmission resources are included in the first transmission resources, and each second transmission resource includes transmission resources in the first direction and transmission resources in the second direction; the second node uses at least one first transmission resource A second transmission resource communicates with the first node.
  • the communication method of the embodiment of the present application by splitting the initially configured limited transmission resources into multiple first-direction and second-direction transmission resources, although the width of each split transmission resource in the time domain is reduced, the It can still meet the transmission of burst information with a small amount of data in a single transmission, and at the same time, multiple transmission resources after fission can also meet the multiple transmission requirements of burst information.
  • the burst information here includes a large amount of control information generated due to changes in service characteristics or the arrival of new services.
  • the second indication information includes one or more of transmission start time, time granularity, preset time interval, transmission times, and transmission end time.
  • the fission of transmission resources is controllable, and the fissioned transmission resources are determined by one or more of parameters such as transmission start time, time granularity, preset time interval, transmission times, transmission end time, etc. Decision can be set according to actual needs.
  • the second indication information is used to activate multiple second transmission resources; A pattern within determines a plurality of second transmission resources, where the pattern is predefined.
  • the second indication information may be used to activate multiple second transmission resources, that is, the second indication information is used to indicate the pattern of the second transmission resource in the first transmission resource, for example, the second indication information may be A label (or index) including a pattern, corresponding to a specific preset pattern, indicates that the first transmission resource is split into multiple second transmission resources of a preset pattern, and the second indication information does not need to include the transmission start time, time granularity , preset time interval, transmission times, transmission end time and other specific information.
  • the first transmission resource is a transmission resource in a connection event or a connection sub-event.
  • the first transmission resources include transmission resources in the first direction, or transmission resources in the second direction, or transmission resources in the first direction and transmission resources in the second direction .
  • the first transmission resources used for fission may include transmission resources in the first direction and transmission resources in the second direction, or may only include transmission resources in the first direction or only transmission resources in the second direction, depending on specific circumstances and needs set up.
  • control information generally has a small amount of data in a single transmission, but requires multiple transmission interactions
  • the communication method in the embodiment of the present application can greatly improve the transmission efficiency of control information, thereby completing new services or service characteristics more efficiently.
  • the interaction of the control information required for the change improves the efficiency of business transmission.
  • a communication method is provided, the method is executed by a second node, including: the second node receives the first data packet sent by the first node; the second node sends the first data packet to the first node based on the reception of the first data packet Sending a second data packet, where the second data packet includes indication information, and the indication information is used to indicate whether the second node has information to be transmitted and the type of the information to be transmitted.
  • a communication domain includes a master communication node (may be referred to as master node for short) and at least one slave communication node (may be referred to as slave node for short).
  • the master node manages time-frequency resources of the communication domain, and has a function of scheduling resources for communication links between communication nodes in the communication domain.
  • the method of the second aspect above can be performed by the slave node, with the first node as the master node, adding indication information in the data packet sent from the slave node to the master node, the indication information indicates the type of information to be transmitted, and the importance of different types Different, after the master node knows the type of information to be transmitted, it can determine whether to transmit the information to be transmitted with the slave node according to the importance of the type.
  • the importance of the type of information to be transmitted is preset. If the information to be transmitted The importance of the type is important. For example, if the type of information to be transmitted is burst information, the master node needs to continue to interact with the slave node for information transmission, so as to prevent the slave node from being unable to transmit important burst information due to lack of initiative .
  • the type of information to be transmitted is control information or data information.
  • burst information such as control information or some data information may be agreed as important, while other data information may be agreed as unimportant.
  • the indication information indicates that there is information to be transmitted
  • the method further includes: receiving a third data packet sent by the first node within a connection event, the first data packet, the second The second data packet and the third data packet are within a connection event; sending information to be transmitted to the first node.
  • the first node When the second node indicates information to be transmitted and the type of information to be transmitted indicates that it is important information, the first node continues to interact with the second node within a connection event, thereby ensuring that the second node can transmit After the transmission of information is completed, there is no need to wait for the next connection interval to ensure the communication quality.
  • the indication information includes a first field and a second field, where the first field is used to indicate whether there is information to be transmitted, and the second field is used to indicate the information to be transmitted.
  • type or, indicates that the information includes a field.
  • the indication information may only include one field, and the one field has 2 bits, which are respectively used to describe whether there is information to be transmitted and the type of the information to be transmitted; or the indication information may include the first field and a second field, the first field and the second field each have 1 bit, wherein the first field is used to indicate whether there is information to be transmitted, and the second field is used to indicate the type of the information to be transmitted. Therefore, the indication information only occupies 2 bits, does not occupy too many resources, and does not affect the transmission of original data.
  • a communication method including: the second node receives indication information from the first node, the indication information is used to indicate transmission resources, and the transmission resources are reserved resources or shared resources; the second node determines according to the indication information transfer resources.
  • the first node is used as the master node
  • the second node is used as the slave node.
  • the master node configures additional transmission resources for the slave nodes.
  • the additional transmission resources are reserved resources
  • the slave nodes can be guaranteed Node data transmission, avoiding the degradation of transmission quality due to the occupation of other slave nodes.
  • the additional transmission resource is a shared resource, on the one hand, it can guarantee the transmission quality of the slave node that has important information to be transmitted, and on the other hand, it can prevent the slave node from occupying other slave nodes for the transmission of preset information types. Transmission resources to ensure the overall communication quality.
  • the importance of the type of information can be agreed in advance, for example, burst information such as control information or some data information can be agreed as important, while other data information can be agreed as not important.
  • the indication information indicates that the transmission resource is a reserved resource of the target node, and when the second node is the target node, the first node and the second node transmit resource communication.
  • the second node is the target node, and the transmission resource is a reserved resource, that is, the dedicated resource of the second node.
  • the second node communicates with the first node on the transmission resource, and other slave nodes cannot occupy the transmission resource, which can ensure The information transmission quality of the second node.
  • the indication information further includes a preset value
  • the method further includes: the second node generates a first random number; when the first random number and the preset value meet the first relationship, the second node communicates with the second node on the third transmission resource.
  • the communication method in the embodiment of the present application also sets the above conditions for the slave node to use the shared resource.
  • the indication information also includes the maximum number of times N that the preset transmission resource is continuously occupied, and N is an integer greater than 0; Three transmission resources are communicated with the first node.
  • the shared resource can be a semi-static resource, which means that multiple shared resources can be configured in one connection event, and if the second node meets the conditions for using the shared resource, it can continuously occupy the shared resource multiple times.
  • a communication method including: a first node sends first indication information and second indication information to a second node respectively, wherein the first indication information is used to determine a first transmission resource, and the second indication information is used to determine a first transmission resource.
  • the multiple second transmission resources are included in the first transmission resource, and each second transmission resource includes transmission resources in the first direction and transmission resources in the second direction; the first node uses at least one first transmission resource Two transport resources communicate with a second node.
  • the second indication information includes one or more of transmission start time, time granularity, preset time interval, transmission times, and transmission end time.
  • the second indication information is used to determine a plurality of second transmission resources, including: the first node uses the second indication information and the plurality of second transmission resources in the first Multiple preset patterns in the transmission resources determine multiple second transmission resources, and the patterns are predefined.
  • the first transmission resource is a transmission resource in a connection event or a connection sub-event.
  • the first transmission resources include transmission resources in the first direction, or transmission resources in the second direction, or transmission resources in the first direction and transmission resources in the second direction .
  • a communication method executed by a first node, including: the first node sends a first data packet to a second node; the first node receives a second data packet sent by the second node, and the second data packet Indication information is included, and the first indication information is used to indicate whether the second node has information to be transmitted and a type of the information to be transmitted.
  • the type of information to be transmitted is control information or data information.
  • the indication information indicates that there is information to be transmitted
  • the method further includes: sending a third data packet to the second node within one connection event, the first data packet, the second data The packet and the third data packet are within a connection event; receiving the information to be transmitted sent by the second node.
  • the indication information includes a first field and a second field
  • the first field is used to indicate whether there is information to be transmitted
  • the second field is used to indicate the type of information to be transmitted , or , indicates that the information includes a field.
  • a communication method including: a first node sends indication information to a second node, where the indication information is used to indicate transmission resources, and the transmission resources are reserved resources or shared resources.
  • the indication information indicates that the transmission resource is a reserved transmission resource of the target node, and the first node communicates with the second node on the reserved transmission resource.
  • the indication information further includes a preset value.
  • the indication information further includes the maximum number of times N that the preset transmission resource is continuously occupied, and N is an integer greater than 0.
  • a communication device including: a transceiver unit and a processing unit, wherein the transceiver unit is configured to receive first indication information sent by a first node, and the first indication information is used to determine a first transmission resource; the transceiver unit It is also used to receive second indication information sent by the first node, the second indication information is used to determine a plurality of second transmission resources, the plurality of second transmission resources are included in the first transmission resource, and each second transmission resource includes the first The transmission resource in the direction and the transmission resource in the second direction; the processing unit is configured to communicate with the first node on at least one second transmission resource among the plurality of second transmission resources obtained according to the second indication information through the transceiver unit.
  • the second indication information includes one or more of transmission start time, time granularity, preset time interval, transmission times, and transmission end time.
  • the second indication information is used to determine a plurality of second transmission resources
  • the processing unit is further configured to: according to the second indication information and the plurality of second transmission resources at Multiple preset patterns in one transmission resource determine multiple second transmission resources, and the patterns are predefined.
  • the first transmission resource is a transmission resource in a connection event or a connection sub-event.
  • the first transmission resources include transmission resources in the first direction, or transmission resources in the second direction, or transmission resources in the first direction and transmission resources in the second direction .
  • a communication device which is set on the second node side, and includes: a transceiver unit and a processing unit, the transceiver unit is used to receive the first data packet sent by the first node; the processing unit is used to receive the first data packet based on the first data For receiving the packet, the transceiver unit sends the second data packet to the first node, the second data packet includes indication information, and the indication information is used to indicate whether the second node has the information to be transmitted and the type of the information to be transmitted.
  • the type of information to be transmitted is control information or data information.
  • the indication information indicates that there is information to be transmitted
  • the processing unit is further configured to receive the third data packet sent by the first node through the transceiver unit, the first data packet, the second The data packet and the third data packet are within a connection event; the processing unit is further configured to send information to be transmitted to the first node through the transceiver unit based on receiving the third data packet.
  • the indication information includes a first field and a second field
  • the first field is used to indicate whether there is information to be transmitted
  • the second field is used to indicate the type of information to be transmitted , or , indicates that the information includes a field.
  • a communication device which is located on the first node side and includes: a transceiver unit and a processing unit, the transceiver unit is used to receive indication information, the indication information is used to indicate transmission resources, and the transmission resources are reserved resources or shared resources ; A processing unit, configured to determine a transmission resource according to the first indication information.
  • the second node is a target node
  • the first node communicates with the second node on transmission resources.
  • the indication information further includes a preset value
  • the method further includes: generating a first random number; when the first random number and the preset value satisfy the first relationship, The second node communicates with the second node over the transmission resource.
  • the indication information also includes the maximum number of times N that the preset transmission resource is continuously occupied, and N is an integer greater than 0; the second node can transmit at most N consecutive times communicate with the first node on the resource.
  • a communication device including: a transceiver unit and a processing unit, the processing unit is configured to send first indication information to a second node through the transceiver unit, and the first indication information is used to determine a first transmission resource; the processing unit It is also used to send second indication information to the second node through the transceiver unit, the second indication information is used to determine a plurality of second transmission resources, the plurality of second transmission resources are included in the first transmission resource, and each second transmission resource includes The transmission resources of the first direction and the transmission resources of the second direction; the processing unit is further configured to communicate with the second node on at least one second transmission resource through the transceiver unit.
  • the second indication information includes one or more of transmission start time, time granularity, preset time interval, transmission times, and transmission end time.
  • the second indication information is used to determine multiple second transmission resources
  • the processing unit is further configured to: according to the second indication information and the multiple second transmission resources at Multiple preset patterns in one transmission resource determine multiple second transmission resources, and the patterns are predefined.
  • the first transmission resource is a transmission resource in a connection event or a connection sub-event.
  • the first transmission resources include transmission resources in the first direction, or transmission resources in the second direction, or transmission resources in the first direction and transmission resources in the second direction .
  • a communication device which is arranged on the first node side, and is characterized in that it includes: a processing unit and a transceiver unit, the processing unit is used to send the first data packet to the second node through the transceiver unit; The unit is further configured to receive a second data packet sent by the second node, the second data packet includes indication information, and the first indication information is used to indicate whether the second node has information to be transmitted and the type of the information to be transmitted.
  • the type of information to be transmitted is control information or data information.
  • the indication information indicates that there is information to be transmitted
  • the processing unit is further configured to send the third data packet to the second node through the transceiver unit, the first data packet, the second The second data packet and the third data packet are within one connection event; the transceiver unit is also used for receiving the information to be transmitted sent by the second node.
  • the indication information includes a first field and a second field
  • the first field is used to indicate whether there is information to be transmitted
  • the second field is used to indicate information to be transmitted
  • a communication device which includes: a memory for storing a program; a processor for executing the program stored in the memory, and when the program stored in the memory is executed, the processor is used for executing the above-mentioned first aspect
  • the method provided by any implementation manner in the sixth aspect.
  • a computer-readable storage medium which is characterized by comprising: the computer-readable medium stores a computer program; when the computer program is executed by one or more processors, the device including the processor executes the above-mentioned A method in any one of the first aspect to the sixth aspect to realize the manner.
  • a fourteenth aspect provides a chip, characterized in that the chip includes a processor and a data interface, and the processor reads the instructions stored on the memory through the data interface to execute any one of the above-mentioned first to sixth aspects method of implementation.
  • a terminal in a fifteenth aspect, includes the device in any one of the implementation manners of the seventh aspect to the eleventh aspect.
  • the terminal can be a vehicle.
  • FIG. 1 is a schematic diagram of a possible wireless communication scenario provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of resource preemption during data transmission provided by the embodiment of the present application.
  • FIG. 3 is a schematic diagram of short-distance communication signaling provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a time axis of short-distance communication provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a time axis of another short-distance communication provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a CIS connection event provided by an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • Fig. 8 is a schematic diagram of determining the first transmission resource as the second transmission resource according to the second indication information provided by the embodiment of the present application;
  • FIG. 9 is a schematic diagram of data transmission within a connection interval provided by the embodiment of the present application.
  • FIG. 10 is a schematic flowchart of another communication method provided by the embodiment of the present application.
  • Fig. 11 is a schematic flowchart of another communication method provided by the embodiment of the present application.
  • FIG. 12 is a schematic flowchart of another communication method provided by the embodiment of the present application.
  • Fig. 13 is a schematic flowchart of another communication method provided by the embodiment of the present application.
  • Fig. 14 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • Fig. 15 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication method provided by the embodiment of the present application can be applied to a scenario where there is signal transmission.
  • the signal is transmitted between the two ends of the communication.
  • the end that sends the signal is the signal sending end
  • the end that receives the signal is the signal receiving end.
  • the sending end and the signal receiving end can change dynamically.
  • the communication terminal A sends a signal and acts as the signal transmitting end
  • the communication terminal A receives the signal and acts as the signal receiving end.
  • the communication terminal can be a signal sending terminal and a signal receiving terminal at the same time, and communicate with different communication terminals.
  • the communication method provided in the embodiment of the present application may be applied to a wireless communication scenario, such as a short-distance wireless communication scenario, a wide-area wireless communication scenario, or a local area wireless communication scenario, and the like.
  • a wireless communication scenario a certain communication area or range may include multiple communication domains.
  • the communication domain may refer to a group of communication nodes with communication relationships and a system composed of communication connection relationships (ie, communication links) between the communication nodes.
  • a communication domain may include a master communication node (may be referred to as master node for short) and at least one slave communication node (may be referred to as slave node for short).
  • FIG. 1 shows a schematic diagram of a wireless communication scenario provided by an embodiment of the present application.
  • the wireless communication scenario at least one master node and at least one slave node corresponding to each master node may be included.
  • a master node 1 and a master node 2 are included in the wireless communication scenario.
  • the master node 1 forms a communication domain 1 with the slave nodes 1 and 2, and the master node 1 communicates with the slave nodes 1 and 2.
  • the master node 2 forms a communication domain 2 with the slave nodes 3 and 4, and the master node 2 communicates with the slave nodes 3 and 4.
  • master node 1 and master node 2 may be network devices, and slave nodes 1 to 4 may be terminal devices.
  • the network device may be a device with a wireless transceiver function or a chip that may be arranged on the network device, for example, the network device may be a radio access network (radio access, RAN) device in a wireless network of a certain communication standard, or It is called a base station, including but not limited to: next generation node B (generation node B, gNB), radio network controller (radio network controller, RNC), node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), wireless fidelity (wireless fidelity, Wi-Fi ) access point (access point, AP), wireless
  • generation node B generation node B
  • RNC radio network controller
  • node B No
  • RAN equipment may include a centralized unit (CU) and a distributed unit (DU).
  • the RAN device may also include a radio frequency unit (radio unit, RU).
  • CU implements some functions of RAN equipment
  • DU implements some functions of RAN equipment, for example, CU implements radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer functions
  • DU implements Radio link control (radio link control, RLC), media access control (media access control, MAC) and physical (physical, PHY) layer functions.
  • the network device may be a CU node, or a DU node, or a device including a CU node and a DU node.
  • the CU can be divided into network devices in the RAN, and the CU can also be divided into network devices in the core network (CN), which is not limited.
  • Terminal equipment may also be called user equipment (user equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.
  • the terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety ( Wireless terminals in transportation safety, wireless terminals in smart cities, smart wearable devices (smart glasses, smart watches, smart headphones, etc.), wireless terminals in smart homes, etc., can also be Chips or chip modules (or chip systems) that can be installed in the above devices.
  • the embodiments of the present application do not limit the application scenarios.
  • a terminal device with a wireless transceiver function
  • master node 1 and master node 2 may be access points (access point, AP), and slave node 1 to slave node 4 Can be a station.
  • examples of the master node and the slave node are different in different short-range wireless communication scenarios.
  • master node 1 and master node 2 can be cockpit domain controllers (cockpit domain controller, CDC), and slave nodes 1 to 4 can be car music speakers, car Ambient lighting etc.
  • master node 1 and master node 2 may be mobile phones, and slave nodes 1 to 4 may be earphones, watches, etc.
  • master node 1 and master node 2 may be home wireless gateways, and slave nodes 1 to 4 may be household appliances.
  • master node 1 and master node 2 may be industrial wireless gateways, and slave nodes 1 to 4 may be unmanned guided vehicles (automatic guided vehicle, AGV) , machine tools, robots, etc.
  • AGV automatic guided vehicle
  • the examples of the master node and the slave node listed above are only examples, and this application does not limit it. It should be noted that when the wireless communication scenario shown in FIG. 1 is another wireless communication scenario, the master node and the slave node may also be other possibilities, which will not be listed here in this application.
  • the roles of the master node and the slave node can be changed dynamically, for example, the master node and the slave node are swapped, or the master node becomes the slave node of other devices, and the slave node becomes the master node of other devices.
  • a node may also be referred to as a communication node, a device (device), or a communication device (device).
  • FIG. 2 shows a schematic diagram of resource preemption during data transmission.
  • the original service (denoted as service 1) is transmitted normally on the configured transmission resources
  • the new service (denoted as service 2) arrives or the service
  • the slave node and the master node will frequently exchange control information, that is, there will be transmission requirements for burst information, such as
  • the slave node reports the feature information of the service 2 to the master node, and the master node establishes a service logic channel according to the feature information of the service 2.
  • burst information includes the arrival of new services or the original For the control information to be transmitted when the service characteristics change, the priority of the control information transmission is higher than that of the service data transmission. Therefore, the transmission resources originally used for the data of the service 1 will be preempted by the control information, and the data of the service 1 The transmission efficiency is greatly reduced.
  • a master node is connected to multiple slave nodes at the same time, in the case of insufficient transmission resources, if the master node interacts with one of the slave nodes for multiple information transmissions, it may also cause other slave nodes to be temporarily unable to obtain transmission. Resources, so that the information of other slave nodes cannot be transmitted normally, the efficiency of information transmission is reduced, and the quality of service is reduced.
  • the embodiment of the present application provides a communication method, by splitting the transmission resource into a plurality of resources in the first direction and resources in the second direction, thereby increasing the chance of transmission in the second direction within the transmission resource between communication nodes , which in turn increases the number of interactions between communication nodes, so that the transmission of control information brought about by new service transmission requirements or service characteristic change requirements can be scheduled more efficiently, reducing the waiting time for current service data transmission and improving transmission efficiency.
  • the communication method provided by the embodiment of the present application can improve the quality of business services and the efficiency of information transmission, thereby solving the problem of weak concurrency in wireless communication scenarios.
  • FIG. 3 and FIG. 4 are respectively a schematic diagram of signaling and a schematic diagram of a time axis of a short-distance communication provided in an embodiment of the present application.
  • t represents the time axis
  • M represents the master node
  • S represents the slave node
  • M ⁇ S represents the data packet sent from the master node to the slave node
  • S ⁇ M represents the data packet sent from the slave node to the master node.
  • the first node and the second node may be initially in a standby state. At this time, the first node and the second node do not establish connections with other devices, nor transmit and receive data.
  • the first node can enter the scanning state, which can be called a scanner or observer at this time; the second node can enter the advertising state, and can be called an advertiser at this time; broadcast The second node in the state can periodically send a broadcast signal, and the broadcast signal can be called a broadcast packet.
  • the second node can send the same broadcast packet on different channels (for example, in three The same broadcast packet is sent on the channel), thereby increasing the probability that the first node scans to the second node.
  • After the first node scans the second node that is, after receiving the broadcast packet sent by the second node, it can send a connection request (connection request) to the second node.
  • the connection request includes a transmission window (transmit window) parameter, which is used to notify the second node that the data packet P1 will be sent to the second node during the transmission window.
  • a transmission window transmit window
  • the second node After the second node sends the broadcast packet, it opens a radio frequency window (Rx window) in order to receive information from the first node; when the second node receives the connection request in the Rx window, it receives the data packet P1 in the transmission window, and Reply data packet P2.
  • Rx window radio frequency window
  • the above broadcast packet, connection request, data packet P1, data packet P2, etc. can be different types of protocol data units (protocol data unit), for example, the broadcast packet is advertising PDU (advertising PDU); the connection request is initiating PDU (initiating PDU), The data packet P1 and the data packet P2 are data physical channel PDUs (data physical channel PDU).
  • protocol data unit protocol data unit
  • the broadcast packet is advertising PDU (advertising PDU); the connection request is initiating PDU (initiating PDU),
  • the data packet P1 and the data packet P2 are data physical channel PDUs (data physical channel PDU).
  • the first node can send a connection request on the primary advertising physical channel, and when the initiator sends the connection request, the link layer (link layer) of the initiator enters the connection state. At this time, the initiator ( The first node) as the master node (master/central). When the second node receives the connection request as the broadcaster, the broadcaster's link layer (link layer) enters the connection state, and at this time, the broadcaster (second node) acts as the slave node (slave/peripheral).
  • FIG. 5 is a schematic diagram of a time axis of another short-distance communication provided by an embodiment of the present application.
  • the initiator sends a connection request on a secondary advertising physical channel, and the broadcaster replies with a connection response upon receiving the connection request.
  • the initiator receives the connection response, the initiator's link layer (link layer) enters the connection state, and the initiator acts as the master node (master/central).
  • the broadcaster's link layer (link layer) enters the connection state.
  • the broadcaster acts as a slave node (slave/peripheral).
  • the broadcaster opens a radio frequency window (Rx window) after time T1 to receive connection requests from scanning nodes.
  • the connection request includes the transmission window (transmit window) parameter determination, and the transmission window parameter can include the transmission window offset (transmit window offset) and the transmission window size (transmit window size), which are used to determine the position of the transmission window (determine T3) and size (T4).
  • the position of the transmission window may also consider the transmission window delay T2, that is, it is determined according to the transmission window delay T2 and the transmission window offset.
  • the master node may send the data packet P1 during the transmission window, and the data packet P1 may be completely within the transmission window, or may exceed the transmission window.
  • connection request may also include other parameters, for example, a connection interval (connection interval, CI) parameter, and the connection interval parameter indicates the size of the connection interval.
  • connection interval connection interval
  • CI connection interval parameter indicates the size of the connection interval.
  • the master node and the slave node can interact once at the beginning of each connection interval, that is, the master node sends a data packet to the slave node, and the slave node sends another data packet to the master node.
  • connection event event
  • the connection interval can also be called the transmission interval
  • the connection event can also be called a transmission event.
  • the interaction between the master node and the slave node can be carried out.
  • the interval between the M ⁇ S data packet and the S ⁇ M data packet in a round of interaction is the time interval T5, and the time interval T5 is mainly used for sending and receiving conversion.
  • the master node or the slave node starts to receive the receipt after the time interval T5 has elapsed after completing the data transmission; or, the master node or the slave node starts to send the data after the time interval T5 has elapsed after completing the data receiving.
  • the time interval T5 may be stipulated in an agreement, or may be determined through negotiation between the sending and receiving ends. This application is not limited to this.
  • the time interval T5 may also be called an inter frame space (inter frame space, IFS) time, or an inter packet space (inter packet space, IPS) time, or a conversion time interval. Other names are different but are all within the protection scope of this application as the time interval between receiving and sending.
  • the time T1 is similar to the time interval T5, and their values may be the same or different, and details will not be repeated here.
  • the master node will take the time point when it starts to receive the data packet P1 as the anchor point (or origin), and the connection interval as the period, and periodically send the data packet to the slave node.
  • the master node and the slave node stop interacting until the next connection interval.
  • whether to continue the interaction can be determined by the master node.
  • the master node determines to continue to interact, the master node can continue to send data packets to the slave node, and the slave node receives the data packet sent by the master node, and after receiving and sending conversion, the slave node can send the data packet to the master node.
  • the length of time occupied by the master node and the slave node to send data is not fixed, depending on the size of the data packet, but is bound by the maximum transmission time.
  • Communication nodes may not have business data to send or receive, but data packets will still be exchanged between communication nodes to maintain the connection. At this time, the exchanged data packets are empty packets, and this application does not limit the size of the data packets.
  • Type which can be an empty packet or a data packet carrying business data.
  • the connection request can also include a delay (latency) parameter, which is used to indicate how many connection events the slave node can skip, that is, the continuous connection events (or connection interval). For example, if the value of the delay parameter is set to N, the slave node can only reply to the master node every N connection intervals, that is to say, the slave node can sleep during the previous N-1 connection intervals until the Nth When the connection interval arrives, a data packet is replied to the node. In this way, the power consumption of the slave node can be greatly saved. During this period, if the slave node has data to report to the master node, it may not wait until the Nth connection interval to report, which not only saves power consumption, but also improves the real-time performance of data transmission.
  • a delay (latency) parameter is used to indicate how many connection events the slave node can skip, that is, the continuous connection events (or connection interval). For example, if the value of the delay parameter is set to N, the slave node can only reply to the master node
  • connection request may also include at least one of the following parameters: the address of the initiator and the broadcaster, such as a MAC address, an access address (the link layer can distinguish the type of the data packet according to the address), a cyclic redundancy check Check (cyclic redundancy error check, CRC) initial value, timeout (timeout) value (the master node and the slave node can maintain the monitoring timer, which resets the timer when receiving a valid data packet, and when the timer reaches the timeout When the time indicated by the value is indicated, it is considered that the link connection is lost), channel map (used to indicate the data channels that can be used and cannot be used), frequency hopping (hop), used to indicate the frequency hopping algorithm in the data channel selection hop increment, sleep clock accuracy.
  • the address of the initiator and the broadcaster such as a MAC address, an access address (the link layer can distinguish the type of the data packet according to the address), a cyclic redundancy check Check (cyclic redundancy error check, CRC) initial value,
  • CIS connected isochronous stream
  • FIG. 6 is a schematic diagram of a CIS connection event.
  • the CIS event is an opportunity for the master node and the slave node to exchange data packets.
  • the starting moment of each CIS event is called a CIS anchor point, and the interval between CIS anchor points is the CIS event interval, which can be determined according to the interval (interval) parameter.
  • Each CIS event can include one or more connection sub-events (also known as transmission sub-events, referred to as sub-events), and each sub-event is used for the master node to transmit a data packet to the slave node, and the data packet can be followed by the slave node pair
  • connection sub-events also known as transmission sub-events, referred to as sub-events
  • each sub-event is used for the master node to transmit a data packet to the slave node, and the data packet can be followed by the slave node pair
  • the first sub-event of a CIS event starts at the CIS anchor point and ends at the data packet of the slave node, such as the S ⁇ M data packet in sub-event 1 in the figure, if the slave node does not send data packet, the packet that ends at the master node.
  • the number of sub-events in a CIS event does not exceed the maximum number of sub-events configured by parameters.
  • the interval between sub-events (referred to as sub-interval for short) may be configured by a parameter, which may be called a sub-interval parameter, and indicates the time between two consecutive or adjacent sub-events. It can be seen that the interval between sub-events is greater than or equal to the length of the sub-events.
  • connection parameters Due to changes in user business requirements, after the master node and the slave node have interacted in the connection state for a period of time, the connection parameters may no longer be suitable for the current business needs. Therefore, in order to improve the quality of business services, the connection parameters can be updated using the connection parameter update process , this process involves a large amount of control signaling interaction between the master node and the slave node, resulting in the problem of low service transmission efficiency or service interruption.
  • the time that can be used for transmission in the above events or sub-events is split into multiple transmission opportunities, thereby increasing the transmission opportunities between communication nodes in this event or sub-event, thereby increasing the number of interactions between communication nodes , so that the transmission of control information brought about by new service transmission requirements or service characteristic change requirements can be more efficiently scheduled, thereby reducing the waiting time for current service data transmission and improving transmission efficiency.
  • FIG. 7 shows a schematic flowchart of a communication method provided by an embodiment of the present application.
  • the method shown in FIG. 7 can be applied to short-distance communication scenarios in the fields of smart terminals, smart homes, smart manufacturing, and smart cars, including mouse, keyboard, wearable devices, and TWS earphones, for example.
  • the method shown in FIG. 7 includes step 701 to step 703, which will be introduced respectively below.
  • the first node sends first indication information to the second node.
  • the second node receives the first indication information sent by the first node, where the first indication information is used to determine a first transmission resource.
  • the first transmission resource can be understood as a transmission resource in the time domain, or viewed from the perspective of the time domain.
  • frequency domain resources may be configured by the master node (dynamic configuration or semi-static configuration), or frequency domain resource allocation may be implemented by using frequency hopping technology.
  • the frequency band is divided into multiple hop channels, and then frequency hopping sequences are used to switch between hop channels to reduce interference.
  • the present application does not limit the method for determining the frequency hopping channel, nor does it limit the number of frequency hopping channels and the frequency of frequency hopping.
  • the first node may be a master node and the second node may be a slave node.
  • the first transmission resource may be a transmission resource in the first direction, or may be a transmission resource in the second direction, or include a transmission resource in the first direction and a transmission resource in the second direction.
  • the transmission resources in the first direction refer to the resources used to transmit data packets from the master node to the slave nodes, and the transmission resources in the second direction are resources used to transmit data packets from the slave nodes to the master node.
  • the available transmission resources in one direction can be split, and the transmission resources in one direction can also be split.
  • the first node sends first indication information to the second node, and the second node receives the first indication information sent by the first node.
  • the first indication information may directly indicate the first transmission resource, or may indirectly indicate the first transmission resource.
  • the first indication information may include at least one parameter, and the at least one parameter is used to determine a transmission resource in a connection event or a connection sub-event, that is, to determine the starting position and size of the transmission resource, the The transmission resource is the transmission resource that can be used by the transmission node, not the final transmission resource. Whether to use the transmission resource or which resources in the transmission resource can be determined according to the actual service situation.
  • the first indication information includes a connection interval (connection interval) parameter, which is used to indicate the time between two consecutive or adjacent connection events, and the reference point of the two connection events may be an anchor point .
  • the second node determines the connection interval according to the connection interval parameter, and uses the whole or part of the time domain resources in the connection interval as the first transmission resource for fission, and can determine different directions after fission according to the preset time interval during fission Transmitting and receiving switching time between resources, so as to determine the distribution of resources in the time domain after fission, wherein, the transmitting and receiving switching time before and after fission may be different.
  • the first indication information includes a connection interval parameter
  • the sizes of the resource R11 for transmission in the first direction and the resource R12 for transmission in the second direction within the connection interval are preset, for example, as agreed in the protocol , at this time, the second node can determine the start time of the event according to the connection interval parameter and the anchor point of the connection event, which is used as the starting point of the resource R11; determine the resource R11 according to the size of the resource R11; and then according to the fission Determine the location of the resource R12 according to the preceding transceiving conversion time, and further determine the resource R12 according to the size of the resource R12.
  • the second node uses resource R11, resource R12, or resource R11 and resource R12 as the first transmission resource, or uses R11, the time before fission, and R12 as the first transmission resource to perform fission, and the fission is performed according to the preset time interval Determining the switching time of sending and receiving between resources in different directions after fission, wherein the switching time of sending and receiving before and after fission may be different.
  • the sizes of the resource R11 and the resource R12 are determined by parameters, respectively referred to as the parameter PR11 and the parameter PR12, and the first indication information may also include the parameter PR11 and the parameter PR12.
  • the size of resource R11 and resource R12 may be the same or different.
  • the first indication information includes a connection interval parameter, and the sizes of the resource R11 for transmission in the first direction and the resource R12 for transmission in the second direction within the connection interval change dynamically.
  • the first node configures the maximum data packet size that can be transmitted through the maximum data packet parameter.
  • This parameter can be one, which is used to configure the maximum value of M ⁇ S data packets and the maximum value of S ⁇ M data packets.
  • This parameter can include Two sub-parameters are used to configure the maximum value of M ⁇ S data packets and the maximum value of S ⁇ M data packets respectively.
  • the second node can respectively determine the time T11 used by the master node to transmit the largest M ⁇ S data packet to the slave node and the time T12 used by the slave node to transmit the largest S ⁇ M data packet to the master node according to the parameter.
  • the second node performs fission by using time domain resources corresponding to times T11 and T12 as first transmission resources.
  • the first indication information includes a sub-interval (sub interval) parameter, where the sub-interval parameter is used to indicate a sub-interval, and the sub-interval is the time between two consecutive or adjacent sub-events.
  • the second node can determine the start time of a sub-event according to the sub-interval parameters and the anchor point of the connection event, and use the whole or part of the time-domain resources in a sub-interval as the first transmission resource for fission, and the fission At this time, the time of sending and receiving switching after fission can be determined according to the preset time interval, and the distribution of resources after fission in the time domain can be determined. Among them, the time of sending and receiving switching before and after fission may be different.
  • the first indication information includes subinterval parameters, and the sizes of the resource R21 for transmission in the first direction and the resource R22 for transmission in the second direction in each subinterval are preset, for example, as agreed in the protocol Yes, at this time, the second node can determine the start time of a sub-event according to the sub-interval parameter and the anchor point of the connection event, and the start time is used as the starting point of the resource R21; determine the resource R21 according to the size of the resource R21; Furthermore, the position of the resource R22 is determined according to the transceiving conversion time before fission, and the resource R22 is further determined according to the size of the resource R22.
  • the second node uses resource R21, resource R22, or resource R21 and resource R22 as the first transmission resource to carry out fission.
  • fission the time for sending and receiving between resources in different directions after fission is determined according to the preset time interval. Among them, before and after fission Transceiver transition times may vary.
  • the sizes of the resource R21 and the resource R22 are determined by parameters, called parameter PR21 and parameter PR22 respectively, and the first indication information may also include the parameter PR21 and the parameter PR22.
  • the size of resource R21 and resource R22 may be the same or different.
  • the first indication information includes subinterval parameters, and the sizes of the resource R21 for transmission in the first direction and the resource R22 for transmission in the second direction within each subinterval change dynamically.
  • the first node configures the maximum data packet size that can be transmitted through the maximum data packet parameter.
  • This parameter can be one, which is used to configure the maximum value of M ⁇ S data packets and the maximum value of S ⁇ M data packets.
  • This parameter can include Two sub-parameters are used to configure the maximum value of M ⁇ S data packets and the maximum value of S ⁇ M data packets respectively.
  • the second node can respectively determine the time T21 used by the master node to transmit the largest M ⁇ S data packet to the slave node and the time T22 used by the slave node to transmit the largest S ⁇ M data packet to the master node according to the parameter.
  • the second node performs fission by using time domain resources corresponding to time T21 and time T22 as the first transmission resource.
  • the first node sends second indication information to the second node.
  • the second node receives the second indication information sent by the first node.
  • the second indication information is used to determine multiple second transmission resources, and the multiple second The transmission resource is included in the first transmission resource, and each second transmission resource includes a transmission resource in the first direction and a transmission resource in the second direction.
  • the transmission resources in the first direction refer to the resources used to transmit data packets from the master node to the slave nodes
  • the transmission resources in the second direction are the resources used to transmit data packets from the slave nodes to the master node, and for the transmission resources in the two directions
  • the sequence is not limited.
  • the second indication information directly indicates multiple second transmission resources, and may also indirectly indicate multiple second transmission resources, and the second indication information may include one or more parameters, which will be further described later.
  • the transmission resources in the first direction and the transmission resources in the second direction may be continuous time domain resources or discontinuous transmission resources, and the transmission resources in the first direction and the transmission resources in the second direction may be the same in size or different.
  • the originally available transmission resources are split into multiple transmission resources in different directions. Since the data volume of a single transmission of control information is small, the second transmission resource after fission can meet the single transmission of control information. requirements, and multiple second transmission resources can meet the multiple transmission requirements of the first direction and the second direction for the control information between the first node and the second node.
  • the first node communicates with the second node through at least one second transmission resource.
  • the first node and the second node communicate on the second transmission resource, where the communication may include the first node sending a data packet to the second node through the transmission resource in the first direction, and the second node using the transmission resource in the second direction
  • a data packet is sent to the first node, and the data packet carries control information, or service data, or may be an empty packet.
  • the information transmitted between the first node and the second node may be a protocol data unit (protocol data unit, PDU), for example, a link layer (Link layer) control (control) protocol data unit (protocol data unit, PDU), or a link layer data PDU, or includes a link layer control PDU and a link layer data PDU.
  • the number of communications between the first node and the second node is not limited, that is, the first node and the second node can use a part of the second transmission resources to transmit information, for example, when there is no communication between the first node and the second node
  • information transmission can only be performed on one second transmission resource, that is, only one transmission in the first direction (for example, M ⁇ S) and transmission in the second direction (for example, S ⁇ M);
  • M ⁇ S only one transmission in the first direction
  • S ⁇ M transmission in the second direction
  • information transmission can be performed on multiple second transmission resources or even all second transmission resources, thereby solving the problem between the first node and the second node.
  • the problem that the multiple interaction requirements for control information between nodes cannot be met.
  • the multiple second transmission resources are determined by the second indication information.
  • the second indication information may include one or more of the following parameters: transmission start time (or location), time granularity, preset time interval, transmission times, and transmission end time (or location).
  • the transmission start time (or position) is used to indicate the start time (or position) of the second transmission resource in the time domain, and may only indicate the start time of one of the second transmission resources, or may indicate multiple second transmission resources.
  • the start time of the resource in addition, the start time of the transmission resource of the first direction and the transmission resource of the second direction in the second transmission resource may be indicated separately, or the start time of the transmission resource of only one direction may be indicated.
  • the transmission end time (or position) is used to indicate the end time (or position) of the second transmission resource in the time domain, and may only indicate the end time of one of the second transmission resources, or may indicate the end of multiple second transmission resources time; in addition, the end time of the transmission resource of the first direction and the transmission resource of the second direction in the second transmission resource may be indicated separately, or the end time of the transmission resource of only one direction may be indicated.
  • the time granularity is used to indicate the width of the second transmission resource in the time domain, or the time granularity is the width of the transmission resource in the first direction and the transmission resource in the second direction of the second transmission resource in the time domain; only one time can be used
  • the granularity parameter indicates the width of the multiple second transmission resources in the time domain.
  • the widths of the multiple second transmission resources in the time domain are uniform (same), or the width of the multiple second transmission resources in the time domain
  • the width changes according to a preset rule (preset linear relationship); or, multiple time granularity parameters may be used to indicate the width of each second transmission resource in the time domain.
  • the preset time interval is an interval in the time domain between the transmission resource of the first direction and the transmission resource of the second direction of the second transmission resource, similar to the above conversion time interval.
  • the number of transmissions is used to indicate the number of transmissions in the first direction of multiple second transmission resources, the number of transmissions in the second direction, or the number of transmissions in the first direction and the second direction.
  • the number of transmissions is used to indicate fission, not the actual number of transmissions, the actual number of transmissions
  • the number of times can be the same or different, so the number of transmissions can also be called the number of resources or the number of fissions.
  • the second indication information may include one of the following parameters: transmission start time, time granularity, preset time interval, transmission times, and transmission end time.
  • the second indication information includes transmission times or time granularity. Since the transmission start time and transmission end time may be the same as the transmission start time and transmission end time of the first transmission resource, the preset time interval may be determined according to hardware conditions, or It is preset (for example, as agreed in the protocol), and when the first transmission resource is equally divided into multiple second transmission resources, that is, the time granularity is uniform, and the time granularity and the number of transmissions can be mutually determined.
  • Figure 8 (a) shows the situation where the second transmission resource is determined only by the number of transmission times.
  • the granularity is uniform, and the width of each transmission resource in the first direction and the transmission resource in the second direction is the same in the time domain, then it can be determined how many transmission resources in the first direction and second direction are split from the initial first transmission resource transmission resources, and the width of each transmission resource in the first direction and transmission resource in the second direction can be determined in the time domain, that is, the time granularity can be determined. Therefore, in this case, the second indication information only needs to include the number of transmission times, that is, Can.
  • the lengths of the transmission resources in the first direction and the transmission resources in the second direction in the first transmission resource are both 14 milliseconds (ms) in the time domain, and the transmission start of the second transmission resource
  • the time and transmission end time are the same as the transmission start time and transmission end time of the first transmission resource
  • the preset time interval is fixed at 2 ms
  • the preset time granularity is uniform
  • the second indication information may only include transmission
  • the first transmission resource in (a) in Figure 8 can be converted into a second transmission resource, and each transmission resource in the first direction and each transmission resource in the second direction in the second transmission resource Both are 2ms.
  • the first transmission resources are not evenly divided Multiple second transmission resources, that is, the width of each transmission resource in the first direction and the transmission resource in the second direction may be different in the time domain.
  • the time granularity and the number of transmissions cannot be mutually determined, and the second indication information can be It includes multiple parameters such as transmission start time, time granularity, preset time interval, transmission times, and transmission end time.
  • the transmission resources of the first direction and the transmission resources of the second direction in the first transmission resource are both 14 milliseconds (ms), and the preset time interval is still fixed at 2ms, then at this time
  • the second indication information includes: transmission start time, time granularity, and transmission times.
  • the transmission start time of the first second transmission resource is 1 ms later than the transmission start time of the first transmission resource.
  • the transmission of the second transmission resource is determined at this time
  • the start time is 1 ms
  • the time granularity is 2 ms for the transmission resources of the first direction
  • 1 ms for the transmission resources of the second direction 1 ms for the transmission resources of the second direction
  • 8 times of transmission times According to the second indication information, the first transmission resource in (b) of FIG. 8 may be converted into the second transmission resource.
  • the second indication information can also include other combinations, as long as the fission mode of the first transmission resource can be determined, for example, the start time can be determined according to the first transmission resource without indicating the transmission start time, or the first transmission resource can be preset The relationship between the start time of the second transmission resource and the start time of the first transmission resource, etc.
  • the number of the second transmission resources is not indicated, so as to dynamically change according to the situation of the information to be sent, and the first node and the second node dynamically determine the time granularity of each service transmission according to the transmission situation of the information to be sent Start time, and then stop sending after the service sending is completed, that is, fission is a dynamic process, and the quantity of the second transmission resource changes according to the actual sending situation, and the second indication information can indicate the time granularity. At this time, there is also no need to indicate the transmission end time.
  • the second indication information may be used to activate multiple second transmission resources, that is, the second indication information is used to indicate a pattern (pattern) of the second transmission resource in the first transmission resource.
  • the pattern of the second transmission resource within the first transmission resource refers to the distribution of the first transmission resource within the first transmission resource.
  • the resource distribution of the second transmission resource within the first transmission resource can be pre-agreed, and the distribution can be one type, and the second indication information can implement the first transmission resource through only one bit. The fission of , that is, when the second indication information is the first value, that is, the fission of the first transmission resource is activated.
  • the implementation is simple and the overhead requirements for information are less; or the distribution can include multiple types, that is, the second transmission resource.
  • the second indication information may be used to indicate the identification or index of the pattern, and resource fission is performed according to the pattern indicated by the second indication information.
  • the first transmission resource is split into multiple second transmission resources corresponding to the preset pattern 1 according to the second indication information, so as to achieve the purpose of activating multiple second transmission resources , and the second indication information does not need to include specific information such as transmission start time, time granularity, preset time interval, transmission times, and transmission end time, which saves signaling overhead and can be flexibly adapted to the needs of different services or scenarios.
  • the configuration of the pattern may be realized by connecting events or sub-events.
  • the first node can configure the parameters of the pattern in the connection request during the process of establishing the connection shown in Figure 4 or Figure 5 above; for another example, in the case of the connection state, the data packet transmitted in the process can be updated through the parameters
  • the embodiment of the present application does not limit the process in which the pattern configuration is performed.
  • the first transmission resources used for fission may include transmission resources in the first direction and transmission resources in the second direction, or may only include transmission resources in the first direction or only transmission resources in the second direction. Specific situations and requirements set.
  • the data packet mentioned in the above embodiments may be a PDU, specifically a data physical channel PDU, such as a link layer data PDU or a link layer control PDU.
  • connection event After the master node and the slave node enter the connection state and after the data transmission is completed, the connection event can be closed.
  • the data physical channel PDU includes a field (more data, MD), and the communication node informs the communication peer whether there is more data to be sent through the field MD.
  • MD more data
  • the existing MD field mechanism is shown in Table 1.
  • MD it means that there is no data to be transmitted, and if MD is 1, it means that there is still data to be transmitted. It can be seen from Table 1 that only when the MD of the data packet sent by the master node and the slave node is 0, the interaction between the master node and the slave node will not continue, and when either the master node or the slave node has an MD of 1, There may continue to be interactions between master and slave nodes. Since the communication is initiated by the master node, it is up to the master node whether to proceed with the interaction.
  • the slave node will set the field MD in the packet header of the data packet sent to the master node to a value of "1", which is used to transmit information to the master node.
  • the master node indicates to the slave node that there are more packets to transmit.
  • the master node determines whether to end the current connection event (connection event, CE) according to the value of the MD field.
  • connection event connection event
  • Figure 9 shows a schematic diagram of data transmission within a connection interval.
  • a connection interval there may be a connection event between the master node and the slave node, and multiple data interactions are allowed within the connection event .
  • the slave node sends a data packet for the first time, it sends the MD field to indicate that the data of the slave node has not been sent to the master node, and there is still data to be sent.
  • the master node can continue to communicate with the slave node. Nodes interact with each other. However, this interaction method is not flexible and may not meet business needs, resulting in low transmission efficiency.
  • the slave node when the slave node sends a data packet, it sends the MD field to indicate that the master node has not finished sending the data of the slave node, and there is still data to be sent. After the master node receives the MD field, due to resource conflict or lack of other reasons, it may still no longer continue to interact with the slave node, the slave node can only wait until the next connection interval to continue data interaction with the master node, resulting in the business needs of the slave node cannot be met, especially for high-level Priority services will lead to a decline in user experience.
  • FIG. 10 shows a schematic flow chart of a communication method provided by an embodiment of the present application.
  • the method shown in FIG. 10 can be applied to short-distance communication scenarios in fields such as smart terminals, smart homes, smart manufacturing, and smart cars. For example, scenarios including mice, keyboards, wearable devices, and TWS headsets.
  • the method shown in FIG. 10 includes step 1001 and step 1002, which will be introduced respectively below.
  • the first node sends a first data packet to a second node, and correspondingly, the second node receives the first data packet sent by the first node.
  • the communication method in the embodiment of the present application is used for the interaction between the first node and the second node, wherein in the connected state, the first node may be a master node, and the second node may be a slave node.
  • the first node sends the first data packet to the second node, and the second node receives the first data packet sent by the first node.
  • the communication is initiated by the first node, and the second node based on the Reception of a data packet sent by a node sends information to the first node.
  • the first data packet here can be an empty data packet.
  • the second node can , and send information to the first node.
  • the second node sends a second data packet to the first node based on receiving the first data packet.
  • the first node receives the second data packet sent by the second node, and the second data packet includes indication information.
  • the indication information is used to indicate whether the second node has information to be transmitted and a type of the information to be transmitted.
  • the second node When the second node sends the data packet to the first node, it sends indication information, the indication information is used to indicate whether the second node has information to be transmitted, and if there is information to be transmitted, it also indicates the type of information to be transmitted.
  • the indication information can multiplex the MD field, that is, the MD field is used to indicate whether the second node has information to be transmitted and the type of information to be transmitted; or a new field can be added on the basis of the MD field, and the MD field is used to indicate the second node. Whether the second node still has information to be transmitted, this newly added field is used to indicate the type of information to be transmitted.
  • the first node continues to send the third data packet to the second node to maintain Connection event, so the first data packet, the second data packet and the third data packet are located in a connection event, where the third data packet can include control information or data information, or it can be an empty packet, and the first node sends the second data packet to the second node
  • the main purpose of sending the third data packet is to enable the second node to continue sending information to be transmitted to the first node based on the third data packet sent by the first node.
  • the second node can send the information to be transmitted to the first node based on the reception of the third data packet, and correspondingly, the data packet of the information to be transmitted may also include indication information, which is used to indicate whether the second node has information to be transmitted next, and if so, indicates the type of the information to be transmitted. Therefore, all the information to be transmitted by the second node can be transmitted in one connection event, without waiting for the next connection interval to continue data interaction with the first node, so as to ensure that the business needs of the second node are met, especially for high-level For priority services, the method in FIG.
  • the 10 can guarantee the real-time performance of high-priority services, thereby improving user experience.
  • the specific service is, for example, a high-priority service or a preset service, wherein a service whose priority reaches or is higher than the preset priority can be regarded as a high-priority service.
  • the indication information may only include one field, and a field indicates whether there is information to be transmitted and the type of information to be transmitted, or the indication information includes a first field and a second field, which are respectively used to indicate whether there is information to be transmitted and the type of information to be transmitted.
  • the size of each field is not limited.
  • the one field has 2 bits, which are respectively used to describe whether there is information to be transmitted and the type of the information to be transmitted.
  • the first field has 1 bit, which is used to indicate whether there is information to be transmitted
  • the second field has N bits, which is used to indicate the type of the information to be transmitted, and the N is determined according to the amount of the type of transmission information that needs to be indicated For example, if indicating two types of control information and service data information (referred to as data information), N can take a value of 1; if indicating more service data types, more bits can be set.
  • indication information is added to the data packet sent from the slave node to the master node.
  • the indication information is used to indicate the type of information to be transmitted. Different types can be pre-agreed with different degrees of importance. Through pre-agreement, If the type of information to be transmitted indicates that it is pre-agreed important information, the master node will continue to interact with the slave node for information transmission, reducing the situation that the slave node cannot transmit important information due to lack of initiative, and improving the importance of important information.
  • Possibility of scheduling for example, when the master node needs to interact with multiple slave nodes at the same time, according to the indication information received from the multiple slave nodes, it is determined that slave node A has a higher priority, so it is preferred to interact with slave node A , that is, the data from node A can be transmitted preferentially, and the transmission efficiency of important information can be improved.
  • Figure 11 shows a schematic flow chart of another communication method provided by the embodiment of the present application.
  • the method shown in Figure 11 can be applied to short-distance communication scenarios in fields such as smart terminals, smart homes, smart manufacturing, and smart cars. , such as in scenarios including mice, keyboards, wearable devices, and TWS headsets.
  • the method shown in FIG. 11 includes S1101 to S1102, which will be introduced respectively below.
  • the first node sends indication information to the second node.
  • the second node receives the indication information sent by the first node.
  • the indication information indicates a transmission resource, and the transmission resource is a reserved resource or a shared resource.
  • the communication method in the embodiment of the present application is used for the interaction between the first node and the second node, wherein in the connected state, the first node may be a master node, and the second node may be a slave node.
  • the embodiment of the present application does not limit the indication of the transmission resource, which may be a direct indication or an indirect indication.
  • the indication method may be similar to the indication of the first transmission resource above, and the transmission resource may be identified by an identifier.
  • the resources are reserved resources or shared resources.
  • the master node configures transmission resources to improve the overall communication quality when the information to be transmitted by some slave nodes exceeds its pre-configured transmission resources.
  • the indication information indicates that the transmission resources are reserved resources of the target node.
  • the target node may be a node with preset information (or important information) to be transmitted, such as control information or preset type of data information; or the target node is a node in a preset node set (list) , the node has a higher priority and can be prioritized to ensure information transmission. For example, if it is pre-agreed that the target node is a node that may transmit important information, then if the second node has important information to be transmitted, then the second node will be used as the target node.
  • Control information or certain data information is important information, and the first node configures reserved resources for the second node, and the reserved resources are resources that cannot be occupied by other slave nodes (non-target slave nodes).
  • the master node and other slave nodes first determine whether the transmission resources occupied by the information to be sent will conflict with the resources reserved for the target node. If there is a conflict, the master node and other slave nodes will not carry out this Transmission of information to be sent.
  • the indication information indicates that the transmission resource is a shared resource
  • the shared resource is a resource that can be occupied by multiple (or all) slave nodes
  • the indication information may be broadcast information.
  • the slave node when the dedicated transmission resource allocated by the master node is used up, if there is still data to be sent, it can use the shared resource to send it. However, since the shared resource is limited, it cannot be used by multiple slave nodes at the same time. Therefore the communication method shown in FIG. 11 also sets conditions for the use of shared resources by the slave nodes.
  • the indication information also includes a preset value, which is pre-configured by the system, or the preset value can be independent of the above information indicating transmission resources; in another implementation, the preset value is a pre-agreed Numerical values do not need to be indicated by indication information.
  • the second node shown in Figure 11 first generates a random number when it needs to use the shared resource, and if the first relationship between the random number and the preset value satisfies the first relationship, the second node can use the shared resource to transmit information with the first node For interaction, if the first relationship is not satisfied, the second node cannot use shared resources to perform information transmission interaction with the first node.
  • the first relationship may be that the random number is greater than or equal to a preset value, or the first relationship may be that the random number is less than a preset value, and the first relationship may be preset, which is not limited in this embodiment of the present application.
  • the shared resource can be a semi-static resource, which means that multiple shared resources can be configured in one connection event, and if the second node meets the conditions for using the shared resource, it can occupy the shared resource multiple times consecutively.
  • the specific number of consecutive occupancy can be pre-agreed or determined by a random integer generated by the second node in [1, N], where N is the maximum number of consecutive occupancy.
  • the second node determines transmission resources according to the indication information.
  • the second node determines the reserved transmission resource according to the indication information.
  • the reserved resource is a resource reserved for the target slave node and cannot be occupied by a non-target slave node.
  • the target slave node Use the reserved resource for information transmission with the first node, if the second node is the target slave node, then the second node uses the reserved resource for information transmission with the first node; when the transmission resource is a shared resource, the second node
  • the shared resource is determined according to the indication information.
  • the second node may occupy the shared transmission resource and transmit the information with the first node, wherein the information to be transmitted may be Control information or data for preset services.
  • the master node configures additional transmission resources for the slave nodes.
  • the additional transmission resources are reserved resources, it can provide data transmission for the slave nodes, reducing the transmission quality caused by the occupation of other slave nodes. decline.
  • the additional transmission resource is a shared resource, on the one hand, it can guarantee the transmission quality of the slave node that has important information to be transmitted, and on the other hand, it can reduce the slave node’s occupation of other slave nodes’ transmission resources for the transmission of important information, thereby Guarantee the overall communication quality.
  • Fig. 12 shows a schematic diagram of another communication method according to an embodiment of the present application, in which transmission resources for a single interaction are split into transmission resources for multiple interactions in the time domain, and the number of interactions is increased.
  • the method shown in FIG. 12 is a specific implementation of the method shown in FIG. 7.
  • the indication information sent by the first node to the second node includes connection interval parameters or sub-interval parameters to determine the resource R11, R12 Or the resource R21, R22, the second node performs fission according to the determined resources R11, R12, the transmission and reception conversion time before fission, or the determined resources R21, R22, and the transmission and reception conversion time before fission.
  • the first node acts as a master node
  • the second node acts as a slave node.
  • the master node sends the first indication information including the connection interval parameter or the sub-interval parameter to the slave node to determine the initial transmission resource
  • the initial transmission resource includes the initial transmission resource of the first direction, the second direction
  • the initial transmission resource of the master node communicates with the slave node using the initial transmission resource of the first direction
  • the slave node communicates with the master node using the initial transmission resource of the second direction.
  • the initial transmission resource of the first direction refers to the initial transmission resource used for the master node
  • the resource for transmitting data packets to the slave node, the initial transmission resource in the second direction is the resource for transmitting the data packet from the slave node to the master node.
  • initial transmission resources are used for interaction, only one piece of control information of the first direction can be transmitted in each initial transmission resource of the first direction.
  • the information interaction process is relatively lengthy, requiring multiple interaction cycles to complete the interaction, and the time span is long, which may affect the transmission of other services.
  • the method for transmitting data in the embodiment of the present application splits the initial single transmission resource into multiple transmission resource pairs, and the amount of data for some important data (such as control information) is not large, so only a small time granularity is required.
  • the data transmission can be completed in the time domain corresponding to the original single transmission resource.
  • the master node sends the second indication information to the slave node, which is used to indicate that the initial transmission resources in the first direction, the initial transmission resources in the second direction, and the time between sending and receiving between the two are split into multiple transmission resource pairs, As shown in Figure 12.
  • the indication information may include one or more parameters such as transmission start time, time granularity, transmission times, preset time interval, and transmission end time.
  • the preset time interval is determined by hardware conditions such as devices, and the transmission start time and transmission end time can be determined by the original transmission resource start time and end time, and the time granularity and the number of transmissions affect each other. Therefore, the indication information may only include time granularity or transmission times.
  • the agreement can pre-agree on a fixed fission method, each fission method corresponds to an index, and different fission methods can be indicated through the index, and different fission methods can include different time granularities, transmission times, preset time intervals, etc. .
  • each fission method corresponds to an index
  • different fission methods can be indicated through the index
  • different fission methods can include different time granularities, transmission times, preset time intervals, etc.
  • the transmission and reception switching time between the initial transmission resources of the first direction and the initial transmission resources of the second direction can also be used for fission, and the preset time interval is used to determine the transmission resources of the first direction after fission and the fission
  • the transmission and reception switching time between the transmission resources in the second direction after the fission, the transmission and reception switching time before the fission and the transmission and reception switching time after the fission may be different.
  • the transceiving conversion time before fission is 4ms
  • the preset time interval is 1ms
  • the transceiving conversion time after fission is 1ms.
  • Another communication method in the embodiment of the present application improves on the existing MD field indication scheme, not only using the MD mechanism to indicate whether there is data to be transmitted, but also indicating the type of data to be transmitted.
  • Table 2 shows the mechanism of the communication method.
  • the indication information can be a field, including 2 bits, wherein the first bit indicates whether there is information to be transmitted, 1 if there is, and 0 if not, and the second bit indicates the type of information to be transmitted, wherein, The preset type is 1, and the non-preset type is 0, where control information or some service data can be used as the preset type.
  • the indication information can be two fields, each field is 1 bit, wherein the first field indicates whether there is information to be transmitted, 1 if there is, and 0 if there is no, and the second field indicates the type of information to be transmitted, wherein, is preset The type is 1, and the non-preset type is 0, where control information or some business data can be used as the preset type.
  • the type of the information to be transmitted is empty, also represented by 0. Therefore, 00 in Table 2 indicates that there is no information to be transmitted; 10 indicates that there is information to be transmitted, and the type of information to be transmitted is not a preset type; 11 indicates that information to be transmitted, and the type of information to be transmitted is a preset type.
  • the master node closes the connection event, and the slave node does not continue to monitor; when the indication information of either the master node or the slave node is 11, the master node needs to continue the connection event , the slave node needs to continue to monitor; in other cases, the master node may continue to connect to the event, which is determined by the master node. For example, at this time, the transmission resources are sufficient, even if the information to be transmitted is not of the preset type, the master node can continue the information transmission with the slave node Interaction, the slave node needs to continue to monitor.
  • the header of the data packet exchanged between the master node and the slave node carries indication information, which is used to indicate the type of data to be transmitted, such as control information or service data. Therefore, when there is important data transmission, the slave node only needs to indicate the information to be transmitted, and indicate whether the type of information to be transmitted is the preset type, which can ensure that the slave node can complete the important information transmission with the master node, thereby ensuring communication quality.
  • Fig. 13 shows a schematic diagram of another communication method provided by the embodiment of the present application, in which corresponding resources are configured through a broadcast message, so as to protect important data transmission from being interrupted.
  • the method in FIG. 13 is a specific implementation of the method in FIG. 11 .
  • the first node serves as the master node
  • the second node serves as the slave node.
  • the master node can configure reserved resources through broadcast messages.
  • the reserved resources are unoccupiable resources, and the unoccupiable resources are used to transmit preset types of data, including control information Or important business data, where the important business data may be business data of a preset type.
  • the slave node determines based on the preset time interval that the time resource of the normal data (that is, data of a non-preset type) to be sent will conflict with unoccupiable resources, the slave node does not send the normal data; when the master node When it is determined based on the preset time interval that the time resource of the normal data to be sent will conflict with the unoccupiable resource, the master node does not send the normal data.
  • the master node can configure a burst resource through a broadcast message.
  • the burst resource is a shared resource, allowing the slave node to use the burst resource to transmit preset types of data.
  • the preset type of data includes control information or important service data, and the important service data may be preset type of service data.
  • the slave node when the dedicated transmission resources allocated by the master node for the slave node are used up, if the slave node still has data to be sent (such as control information or important business data), the slave node can use burst Send resources to transmit data with the master node. In order to reduce burst resources being occupied for a long time, it is possible to determine whether a slave node can occupy burst resources by setting a probability. For example, the slave node generates a random number within a preset range, such as generating a random number between 0 and 1, and then compares the random number with the system preset value P1.
  • the slave node can occupy the burst resource; if the random number is greater than or equal to P1, the slave node cannot occupy the burst resource.
  • the slave node adds 1 to the count value each time the burst resource is occupied. When the count value does not reach the threshold, the slave node can use the burst resource, and when the count value reaches the threshold, the slave node cannot use the burst resource.
  • the burst resources may be semi-static resources, that is, they are periodic within a certain period of time. Therefore, when the slave node is determined to be able to occupy burst resources, the number of times the slave node can be continuously occupied may further be determined. For example, the maximum number of consecutive occupancy allowed by the agreement or configured by the master node. Taking the maximum number of times as 5 as an example, the slave node can generate a random number 3 between [1,5], that is, the number of times the slave node can continuously occupy burst resources is 3 times.
  • the information in the above or following embodiments of the present application may include data information or control information, which may be transmitted in the form of data PDU or control PDU.
  • the data packet in the embodiment of the present application is, for example, a PDU, and may be a data packet PDU or Control PDUs.
  • Fig. 14 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the apparatus 1400 includes a transceiver unit 1410 and a processing unit 1420 .
  • the transceiver unit 1410 can implement a corresponding communication function, and the processing unit 1420 is used for data processing.
  • the transceiver unit 1410 may also be called a communication interface or a communication unit.
  • the device 1400 may further include a storage unit, which may be used to store instructions and/or data, and the processing unit 1420 may read the instructions and/or data in the storage unit, so that the device implements the aforementioned method embodiments .
  • a storage unit which may be used to store instructions and/or data
  • the processing unit 1420 may read the instructions and/or data in the storage unit, so that the device implements the aforementioned method embodiments .
  • the device 1400 can be used to execute the actions performed by the second node in the method embodiment above.
  • the transceiver unit 1410 is used to perform operations related to sending and receiving on the second node side in the method embodiment above.
  • the processing unit 1420 uses Operations related to processing on the second node side in the above method embodiments are executed.
  • the apparatus 1400 can implement the steps or processes corresponding to the execution of the second node side in the method embodiment according to the embodiment of the present application, and the apparatus 1400 can include a method for executing the second node side in FIG. The unit of method to execute. Moreover, each unit in the apparatus 1400 and other operations and/or functions mentioned above are respectively for realizing the corresponding flow of the method embodiment on the second node side in FIG. 7 , FIG. 10 and FIG. 11 .
  • the transceiver unit 1410 can be used to execute steps 701 and 702 in the method 700 ; the processing unit 1420 can be used to execute the processing steps in the method 700 , such as step 703 .
  • the transceiver unit 1410 is configured to receive the first indication information sent by the first node, the first indication information is used to determine the first transmission resource; the transceiver unit 1410 is also configured to receive the second indication information sent by the first node, the first indication information is used to determine the first transmission resource; The second indication information is used to determine multiple second transmission resources, the multiple second transmission resources are included in the first transmission resource, and each second transmission resource includes transmission resources in the first direction and transmission resources in the second direction; the processing unit 1420 , configured to use the transceiving unit 1410 to communicate with the first node on at least one second transmission resource among the plurality of second transmission resources obtained according to the second indication information.
  • the second indication information includes one or more of transmission start time, time granularity, preset time interval, transmission times, and transmission end time.
  • the second indication information is used to determine multiple second transmission resources, including: determining multiple second transmission resources according to the second indication information and multiple preset patterns of the multiple second transmission resources in the first transmission resource.
  • the pattern of the second transmission resource is predefined.
  • the first transmission resource is a transmission resource in a connection event or a connection sub-event.
  • the first transmission resources include transmission resources in the first direction, or transmission resources in the second direction, or transmission resources in the first direction and transmission resources in the second direction.
  • the apparatus 1400 may include a unit for performing the method performed on the second node side in FIG. 10 . Moreover, each unit in the apparatus 1400 and the above-mentioned other operations and/or functions are respectively for realizing the corresponding flow of the method embodiment on the second node side in FIG. 10 .
  • the transceiver unit 1410 can be used to execute step 1001 in the method 1000
  • the processing unit 1420 can be used to execute step 1002 in the method 1000 .
  • the transceiver unit 1410 is used to receive the first data packet sent by the first node; the processing unit 1420 is used to send the second data packet to the first node through the transceiver unit 1420 based on the reception of the first data packet, and the second data
  • the packet includes indication information, and the indication information is used to indicate whether the second node has the information to be transmitted and the type of the information to be transmitted.
  • the type of information to be transmitted is control information or data information.
  • the indication information indicates that there is information to be transmitted
  • the transceiver unit 1410 is further configured to: receive a third data packet sent by the first node, where the first data packet, the second data packet, and the third data packet are connected in one connection
  • the processing unit 1420 is further configured to, based on receiving the third data packet, send the information to be transmitted to the first node through the transceiver unit.
  • the indication information includes a first field and a second field, the first field is used to indicate whether there is information to be transmitted, and the second field is used to indicate a type of the information to be transmitted, or, the indication information includes one field.
  • the apparatus 1400 may further include a unit for performing the method performed on the second node side in FIG. 11 . Moreover, each unit in the apparatus 1400 and the above-mentioned other operations and/or functions are respectively for realizing the corresponding flow of the method embodiment on the second node side in FIG. 11 .
  • the transceiver unit 1410 can be used to execute step 1101 in the method 1100 ; the processing unit 1420 can be used to execute step 1102 in the method 1100 .
  • the transceiver unit 1410 is configured to receive indication information, the indication information is used to indicate transmission resources, and the transmission resources are reserved resources or shared resources; the processing unit 1420 is configured to determine transmission resources according to the indication information.
  • the second node is the target node
  • the transmission resources are reserved resources
  • the first node communicates with the second node on the reserved resources.
  • the indication information further includes a preset value
  • the method further includes: the transmission resource is a shared resource, and the second node generates a first random number; when the first random number and the preset value satisfy the first relationship, The second node communicates with the second node on the shared resource.
  • the transmission resource is a shared resource
  • the indication information also includes the maximum number of times N that the preset transmission resource is continuously occupied, and N is an integer greater than 0; Node communication.
  • the device 1400 can be used to execute the actions performed by the first node in the above method embodiments.
  • the transceiver unit 1410 is used to perform operations related to sending and receiving on the first node side in the above method embodiments.
  • the processing unit 1420 uses Operations related to processing on the first node side in the above method embodiments are executed.
  • the apparatus 1400 can implement the steps or processes corresponding to the execution of the first node side in the method embodiment according to the embodiment of the present application, and the apparatus 1400 can include a method for executing the first node side in FIG. 7 , FIG. 10 and FIG. 11 The unit of method to execute. Moreover, each unit in the apparatus 1400 and other operations and/or functions mentioned above are respectively for realizing the corresponding flow of the method embodiment on the first node side in FIG. 7 , FIG. 10 and FIG. 11 .
  • the apparatus 1400 may include a unit for performing the method performed on the first node side in FIG. 7 . Moreover, each unit in the apparatus 1400 and other operations and/or functions mentioned above are respectively for realizing the corresponding flow of the method embodiment on the first node side in FIG. 7 .
  • the processing unit 1410 is configured to send the first indication information to the second node through the transceiver unit 1410, and the first indication information is used to determine the first transmission resource; the processing unit 1410 is also configured to send the second node through the transceiver unit 1410. Two indication information, the second indication information is used to determine a plurality of second transmission resources, the plurality of second transmission resources are included in the first transmission resource, and each second transmission resource includes transmission resources in the first direction and transmission in the second direction Resources; the processing unit 1420 is further configured to communicate with the second node on at least one second transmission resource through the transceiver unit 1410 .
  • the second indication information includes one or more of transmission start time, time granularity, preset time interval, transmission times, and transmission end time.
  • the second indication information is used to determine multiple second transmission resources, including: determining multiple second transmission resources according to the second indication information and multiple preset patterns of the multiple second transmission resources in the first transmission resource.
  • the pattern of the second transmission resource is predefined.
  • the first transmission resource is a transmission resource in a connection event or a connection sub-event.
  • the first transmission resources include transmission resources in the first direction, or transmission resources in the second direction, or transmission resources in the first direction and transmission resources in the second direction.
  • the apparatus 1400 may include a unit for performing the method performed on the first node side in FIG. 10 . Moreover, each unit in the apparatus 1400 and the above-mentioned other operations and/or functions are respectively for realizing the corresponding flow of the method embodiment on the first node side in FIG. 10 .
  • the processing unit 1420 is configured to send the first data packet to the second node through the transceiver unit 1410; the transceiver unit 1410 is also configured to receive the second data packet sent by the second node, the second data packet includes indication information, and the first indication Information is used to indicate whether there is information to be transmitted and the type of information to be transmitted.
  • the type of information to be transmitted is control information or data information.
  • the indication information indicates that there is information to be transmitted
  • the processing unit 1420 is further configured to: send a third data packet, the first data packet, the second data packet and the third data packet to the second node through the transceiver unit 1410 Located within a connection event; receiving the information to be transmitted sent by the second node through the transceiver unit 1410 .
  • the indication information includes a first field and a second field, the first field is used to indicate whether there is information to be transmitted, and the second field is used to indicate a type of the information to be transmitted, or, the indication information includes one field.
  • the apparatus 1400 may include a unit for performing the method performed on the first node side in FIG. 11 . Moreover, each unit in the apparatus 1400 and the above-mentioned other operations and/or functions are respectively for realizing the corresponding flow of the method embodiment on the first node side in FIG. 11 .
  • the transceiving unit 1410 is configured to send indication information to the second node, where the indication information is used to indicate transmission resources, and the transmission resources are reserved resources or shared resources.
  • the processing unit 1420 is configured to communicate with the second node on reserved resources or shared resources through the transceiver unit 1410 .
  • the indication information indicates that the transmission resource is a reserved resource of the target node
  • the processing unit 1420 is configured to communicate with the second node through the transceiver unit 1410 on the reserved transmission resource.
  • the indication information further includes a preset value.
  • the indication information further includes the maximum number of times N that the preset transmission resource is continuously occupied, and N is an integer greater than 0.
  • transceiver unit may be designed in an integrated manner, that is, include both receiving and sending functions, or may be designed separately, that is, be replaced by a receiving unit with a receiving function and a sending unit with a sending function.
  • the processing unit in FIG. 14 may be implemented by at least one processor or processor-related circuits.
  • the transceiver unit may be implemented by a transceiver or transceiver-related circuits.
  • the storage unit can be realized by at least one memory.
  • the embodiment of the present application further provides a communication device 1500 .
  • the apparatus 1500 includes a transceiver 1510 and may further include a processor 1520 coupled with a memory 1530 .
  • the transceiver 1530 is used for signal reception and/or transmission.
  • the processor 1520 is configured to control the transceiver 1510 to receive and/or send signals.
  • the memory 1530 is used to store computer programs or instructions and/or data, and the processor 1520 is used to execute the computer programs or instructions and/or data stored in the memory 1530, so that the methods in the above method embodiments are executed.
  • the processor 1520 may be a central processing unit (central processing unit, CPU), a network processor (network processor, NP) or a combination of CPU and NP.
  • the processor 1520 may further include a hardware chip.
  • the aforementioned hardware chip may be an application-specific integrated circuit (application-specific integrated circuit, ASIC), a programmable logic device (programmable logic device, PLD) or a combination thereof.
  • the aforementioned PLD may be a complex programmable logic device (complex programmable logic device, CPLD), a field-programmable gate array (field-programmable gate array, FPGA), a general array logic (generic array logic, GAL) or any combination thereof.
  • the apparatus 1500 includes one or more processors 1520 .
  • the apparatus 1500 may further include a memory 1530 .
  • the apparatus 1500 may include one or more memories 1530 .
  • the memory 1530 may be integrated with the processor 1520, or set separately.
  • the apparatus 1500 is used to implement the operations performed by the second node in the above method embodiments.
  • the apparatus 1500 is used to implement the operations performed by the first node in the above method embodiments.
  • the embodiment of the present application also provides a communication device, which includes: a memory for storing a program; a processor for executing the program stored in the memory, and when the program stored in the memory is executed, the processor is used for executing the above method embodiment A method executed by the first node or the second node in .
  • the embodiment of the present application also provides a computer-readable storage medium, including: the computer-readable medium stores a computer program; when the computer program is executed by one or more processors, the device including the processor executes the method described in the above-mentioned embodiment A method performed by the first node or the second node.
  • the embodiment of the present application also provides a chip, the chip includes a processor and a data interface, and the processor reads the instructions stored on the memory through the data interface, so as to execute the method performed by the first node or the second node in the above method embodiment .
  • the embodiment of the present application also provides a terminal, the terminal includes any one of the above-mentioned devices in Figure 14 and Figure 15, and the terminal can be a vehicle, including a vehicle with intelligent driving and assisted driving technology.
  • a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • an application running on a computing device and the computing device can be components.
  • One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers.
  • these components can execute from various computer readable media having various data structures stored thereon.
  • a component may, for example, be based on a signal having one or more packets of data (e.g., data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet via a signal interacting with other systems). Communicate through local and/or remote processes.
  • packets of data e.g., data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet via a signal interacting with other systems.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the embodiment of the present application is essentially or the part that contributes to or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several
  • the instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande concerne un procédé de communication, qui est appliqué à une conduite intelligente ou à une conduite assistée. Le procédé comprend les étapes suivantes : un deuxième nœud reçoit respectivement des premières informations d'indication et des deuxièmes informations d'indication provenant d'un premier nœud, les premières informations d'indication étant utilisées pour déterminer une première ressource de transmission, les deuxièmes informations d'indication étant utilisées pour déterminer une pluralité de deuxièmes ressources de transmission, la pluralité de deuxièmes ressources de transmission étant contenues dans la première ressource de transmission, et chaque deuxième ressource de transmission comprenant une ressource de transmission dans une première direction et une ressource de transmission dans une deuxième direction ; puis, le deuxième nœud communique avec le premier nœud au moyen d'au moins une deuxième ressource de transmission. Au moyen du procédé de communication de la présente demande, une pluralité d'instances de transmission d'informations de rafale entre un nœud maître et un nœud esclave peuvent être réalisées sur des ressources de transmission limitées, ce qui permet d'améliorer l'efficacité de transmission de service. Le procédé de la présente demande peut être appliqué à un internet de véhicules, tel qu'un véhicule à tout (V2X), un véhicule d'évolution à long terme (LTE-V), et un véhicule à véhicule (V2V).
PCT/CN2021/105430 2021-07-09 2021-07-09 Procédé et appareil de communication WO2023279359A1 (fr)

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PCT/CN2021/105430 WO2023279359A1 (fr) 2021-07-09 2021-07-09 Procédé et appareil de communication
CN202180100071.7A CN117597968A (zh) 2021-07-09 2021-07-09 通信方法和装置

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103095364A (zh) * 2011-11-01 2013-05-08 华为技术有限公司 数据传送方法和装置
WO2017132998A1 (fr) * 2016-02-05 2017-08-10 广东欧珀移动通信有限公司 Procédé, station mobile et appareil de réseau permettant la transmission d'un service
CN111132329A (zh) * 2018-11-02 2020-05-08 维沃移动通信有限公司 一种资源指示方法、设备及系统
CN111224740A (zh) * 2018-11-23 2020-06-02 华为技术有限公司 一种控制信息的发送和接收方法及终端设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103095364A (zh) * 2011-11-01 2013-05-08 华为技术有限公司 数据传送方法和装置
WO2017132998A1 (fr) * 2016-02-05 2017-08-10 广东欧珀移动通信有限公司 Procédé, station mobile et appareil de réseau permettant la transmission d'un service
CN111132329A (zh) * 2018-11-02 2020-05-08 维沃移动通信有限公司 一种资源指示方法、设备及系统
CN111224740A (zh) * 2018-11-23 2020-06-02 华为技术有限公司 一种控制信息的发送和接收方法及终端设备

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