CN117597968A - Communication methods and devices - Google Patents

Abstract

The application provides a communication method which is applied to intelligent driving or auxiliary driving. Comprising the following steps: the second node receives first indication information and second indication information from the first node respectively, wherein the first indication information is used for determining first transmission resources, the second indication information is used for determining a plurality of second transmission resources, the plurality of second transmission resources are contained in the first transmission resources, each second transmission resource comprises transmission resources in a first direction and transmission resources in a second direction, and then the second indication information is communicated with the first node through at least one second transmission resource. The communication method can realize the repeated transmission of the burst information between the master node and the slave node on the limited transmission resource, and improves the service transmission efficiency. The method can be applied to the Internet of vehicles, such as vehicle external connection V2X, workshop communication long-term evolution technology LTE-V, vehicle-vehicle V2V and the like.

Description

Communication methods and devices Technical field

The embodiments of the present application relate to the field of communication technology, and more specifically, to a communication method and device.

Background technique

Short-range communications play an important role in people's daily lives. For example, there are demands for short-range communications in smart terminals, smart homes, smart manufacturing, smart cars and other fields. For example, Bluetooth is the most common short-range 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. It is widely used in connection aspects such as stereo (true wireless stereo, TWS) headsets.

However, the concurrency capability of short-distance communication is weak. For example, when new tasks arrive or service characteristics (such as service arrival cycles) change, there will be a need to transmit burst information (including more control information). Generally speaking, control information has a higher priority, and the transmission of burst information may occupy the transmission resources configured for service transmission, affecting normal service transmission. Therefore, there is an urgent need for a method to realize burst information transmission while improving the efficiency of business transmission.

Contents of the invention

Embodiments of the present application provide a communication method and device, which can realize burst information transmission and improve the efficiency of service transmission.

In a first aspect, a communication method is provided, including: a second node receiving first indication information and second indication information respectively from the first node, wherein the first indication information is used to determine the first transmission resource, and the second indication information is used to determine the first transmission resource. In determining 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 a transmission resource in the first direction and a transmission resource in the second direction; the second node passes at least one first The second transmission resource communicates with the first node.

The communication method of the embodiment of the present application splits the initially configured limited transmission resources into multiple transmission resources in the first direction and the second direction. Although the width of each transmission resource after the fission is reduced in the time domain, It can still meet the transmission of burst information with a small amount of data in a single transmission. 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.

In conjunction with the first aspect, in some implementations of the first aspect, the second indication information includes one or more of transmission start time, time granularity, preset time interval, number of transmissions, and transmission end time.

In the communication method of the embodiment of the present application, the fission of transmission resources is controllable. The fissioned transmission resources are determined by one or more parameters such as transmission start time, time granularity, preset time interval, number of transmissions, and transmission end time. Decision can be set according to actual needs.

With reference to the first aspect, in some implementations of the first aspect, the second indication information is used to activate multiple second transmission resources; the second node activates the first transmission resource according to the second indication information and the multiple second transmission resources. A pattern within determines a plurality of second transmission resources, where the pattern is predefined.

In the communication method according to the embodiment of the present application, the second indication information can be used to activate multiple second transmission resources, that is, the second indication information is used to indicate the pattern of the second transmission resources within the first transmission resource. For example, the second indication information can be A tag (or index) including a pattern, corresponding to a specific preset pattern, instructing the first transmission resource to be split into multiple second transmission resources of the preset pattern, and the second instruction information no longer needs to include the transmission start time and time granularity , preset time interval, number of transmissions, transmission end time and other specific information.

In conjunction with the first aspect, in some implementations of the first aspect, the first transmission resource is a transmission resource in a connection event or a connection sub-event.

In conjunction with the first aspect, in some implementations of the first aspect, the first transmission resource includes a transmission resource in the first direction, or a transmission resource in the second direction, or a transmission resource in the first direction and a transmission resource 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 include only transmission resources in the first direction or only transmission resources in the second direction, depending on the specific circumstances and needs. set up.

Since the amount of data transmitted in a single transmission of control information is generally small, but multiple transmissions and interactions are required, the communication method of the embodiment of the present application can greatly improve the transmission efficiency of control information, thereby completing new services or service features more efficiently. The exchange of control information required for changes improves business transmission efficiency.

In a second aspect, a communication method is provided. The method is executed by a second node, including: the second node receives a first data packet sent by the first node; and the second node sends a message to the first node based on the reception of the first data packet. A second data packet is sent, 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 information to be transmitted.

A communication domain includes a master communication node (which may be referred to as a master node) and at least one slave communication node (which may be referred to as a slave node). Among them, the master node manages the time-frequency resources of the communication domain and has the function of scheduling resources for communication links between communication nodes in the communication domain. The method of the second aspect above can be executed by a slave node, with the first node serving as the master node, adding indication information in the data packet sent from the slave node to the master node, where 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 is 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 to avoid the slave node being unable to transmit important burst information because it has no initiative. .

Combined with the second aspect, in some implementations of the second aspect, the type of information to be transmitted is control information or data information.

The importance of the above types of information to be transmitted can be agreed in advance. For example, burst information such as control information or some data information can be agreed to be important, while other data information can be agreed to be unimportant.

Combined with the second aspect, in some implementations of the second aspect, the indication information indicates that there is information to be transmitted, and the method further includes: receiving a third data packet sent by the first node within a connection event, the first data packet, the The second data packet and the third data packet are within a connection event; information to be transmitted is sent to the first node.

When the second node indicates that there is information to be transmitted and the type of the 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 the information within a connection event. When the transmission of information is completed, there is no need to wait for the next connection interval to ensure communication quality.

In conjunction with the second aspect, in some implementations of the second aspect, 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 whether there is information to be transmitted. Type, or, indicates that the information includes a field.

In the communication method of the embodiment of the present application, the indication information may include only one field, and the field has 2 bits, 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, where 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.

In a third aspect, a communication method is provided, 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 Transport resources.

The communication method of the third aspect uses the first node as the master node and the second node as the slave node. The master node configures additional transmission resources for the slave node. When the additional transmission resources are reserved resources, it can ensure that the slave node Node data transmission avoids the degradation of transmission quality due to the occupation of other slave nodes. When the additional transmission resources are shared resources, on the one hand, the transmission quality of the slave node that has important information to be transmitted can be guaranteed, and on the other hand, the slave node can be prevented from occupying the space of other slave nodes for the transmission of information of a preset information type. transmission resources to ensure 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 to be important, while other data information can be agreed to be unimportant.

Combined with the third aspect, in some implementations of the third aspect, the indication information indicates that the transmission resources are reserved resources of the target node. When the second node is the target node, the first node and the second node transmit in the reserved resources. Communicate on resources.

As mentioned above, the second node is the target node, and the transmission resources are reserved resources, that is, the dedicated resources of the second node. The second node communicates with the first node on the transmission resources, and other slave nodes cannot occupy the transmission resources, which can be guaranteed Information transmission quality of the second node.

Combined with the third aspect, in some implementations of the third aspect, the indication information also includes a preset value, and the method further includes: the second node generates a first random number; when the first random number and the preset value satisfy the first During the relationship, the second node communicates with the second node on the third transmission resource.

For slave nodes, when the dedicated transmission resources allocated by the master node are used up, if there is still data to be sent, shared resources can be used to send it. However, because shared resources are limited, they cannot be used by all slave nodes at the same time. Therefore, the communication method in the embodiment of the present application also sets the above conditions for the slave node to use the shared resources.

Combined with the third aspect, in some implementations of the third aspect, the indication information also includes a preset maximum number of times that the transmission resource is continuously occupied N, where N is an integer greater than 0; the second node can be used in the first N times at most. Communicate with the first node on three transmission resources.

Shared resources can be semi-static resources, which means that multiple shared resources can be configured within one connection event. If the second node meets the conditions for using shared resources, it can occupy the shared resources multiple times in a row.

In a fourth aspect, a communication method is provided, including: a first node sending first indication information and second indication information respectively to a second node, where the first indication information is used to determine the first transmission resource, and the second indication information is used to determine the first transmission resource. In determining a plurality of second transmission resources, the plurality of second transmission resources are included in the first transmission resources, and each second transmission resource includes a transmission resource in the first direction and a transmission resource in the second direction; the first node passes at least one first The second transmission resource communicates with the second node.

In conjunction with the fourth aspect, in some implementations of the fourth aspect, the second indication information includes one or more of transmission start time, time granularity, preset time interval, number of transmissions, and transmission end time.

In conjunction with the fourth aspect, in some implementations of the fourth aspect, the second indication information is used to determine a plurality of second transmission resources, including: the first node determines a plurality of second transmission resources in the first place according to the second indication information and the plurality of second transmission resources. A plurality of preset patterns within the transmission resources determine a plurality of second transmission resources, and the patterns are predefined.

Combined with the fourth aspect, in some implementations of the fourth aspect, the first transmission resource is a transmission resource in a connection event or a connection sub-event.

In conjunction with the fourth aspect, in some implementations of the fourth aspect, the first transmission resource includes 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. .

In a fifth aspect, a communication method is provided, 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 Including indication information, the first indication information is used to indicate whether the second node has information to be transmitted and the type of information to be transmitted.

Combined with the fifth aspect, in some implementations of the fifth aspect, the type of information to be transmitted is control information or data information.

Combined with the fifth aspect, in some implementations of the fifth aspect, the indication information indicates that there is information to be transmitted, and the method further includes: sending a third data packet to the second node within a 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.

In conjunction with the fifth aspect, in some implementations of the fifth aspect, 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 the type of information to be transmitted. , or, indicates that the information includes a field.

In a sixth aspect, a communication method is provided, including: a first node sending indication information to a second node, the indication information being used to indicate transmission resources, and the transmission resources are reserved resources or shared resources.

In conjunction with the sixth aspect, in some implementations of the sixth aspect, the indication information indicates that the transmission resource is a reserved resource of the target node, and the first node and the second node communicate on the reserved transmission resource.

Combined with the sixth aspect, in some implementations of the sixth aspect, the indication information also includes a preset value.

Combined with the sixth aspect, in some implementations of the sixth aspect, the indication information also includes a preset maximum number of times N that the transmission resource is continuously occupied, where N is an integer greater than 0.

In a seventh aspect, a communication device is provided, including: a transceiver unit and a processing unit, wherein the transceiver unit is used to receive the first indication information sent by the first node, and the first indication information is used to determine the 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. Each second transmission resource includes a first transmission resource. transmission resources in one direction and transmission resources in a second direction; a processing unit configured to communicate with the first node through at least one second transmission resource among a plurality of second transmission resources obtained according to the second indication information through the transceiver unit.

In conjunction with the seventh aspect, in some implementations of the seventh aspect, the second indication information includes one or more of transmission start time, time granularity, preset time interval, number of transmissions, and transmission end time.

In conjunction with the seventh aspect, in some implementations of the seventh aspect, the second indication information is used to determine a plurality of second transmission resources, and the processing unit is further configured to: based on the second indication information and the plurality of second transmission resources, A plurality of preset patterns within a transmission resource determine a plurality of second transmission resources, and the patterns are predefined.

Combined with the seventh aspect, in some implementations of the seventh aspect, the first transmission resource is a transmission resource in a connection event or a connection sub-event.

In conjunction with the seventh aspect, in some implementations of the seventh aspect, the first transmission resource includes a transmission resource in the first direction, or a transmission resource in the second direction, or a transmission resource in the first direction and a transmission resource in the second direction. .

In an eighth aspect, a communication device is provided, which is provided 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 generate data based on the first data. To receive the packet, the transceiver unit sends a 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 information to be transmitted and the type of information to be transmitted.

Combined with the eighth aspect, in some implementations of the eighth aspect, the type of information to be transmitted is control information or data information.

Combined with the eighth aspect, in some implementations of the eighth aspect, the indication information indicates that there is information to be transmitted, and 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 in one connection event; the processing unit is also used to send the information to be transmitted to the first node through the transceiver unit based on the reception of the third data packet.

In conjunction with the eighth aspect, in some implementations of the eighth aspect, 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 the type of information to be transmitted. , or, indicates that the information includes a field.

In a ninth aspect, a communication device is provided, located on the first node side, including: 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. The transmission resources are reserved resources or shared resources. ;A processing unit, configured to determine transmission resources according to the first indication information.

Combined with the ninth aspect, in some implementations of the ninth aspect, the second node is the target node, and the first node communicates with the second node on the transmission resource.

In conjunction with the ninth aspect, in some implementations of the ninth aspect, the indication information also includes a preset value, and the method further includes: generating a first random number; when the first random number and the preset value satisfy a first relationship, The second node communicates with the second node on the transmission resource.

Combined with the ninth aspect, in some implementations of the ninth aspect, the indication information also includes a preset maximum number of times that the transmission resource is continuously occupied N, where N is an integer greater than 0; the second node can transmit at most N times continuously. Communicate with the first node on the resource.

In a tenth aspect, a communication device is provided, including: a transceiver unit and a processing unit, the processing unit is configured to send first indication information to the second node through the transceiver unit, and the first indication information is used to determine the 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. Each second transmission resource includes Transmission resources in the first direction and transmission resources in the second direction; the processing unit is also configured to communicate with the second node on at least one second transmission resource through the transceiver unit.

In conjunction with the tenth aspect, in some implementations of the tenth aspect, the second indication information includes one or more of transmission start time, time granularity, preset time interval, number of transmissions, and transmission end time.

In conjunction with the tenth aspect, in some implementations of the tenth aspect, the second indication information is used to determine a plurality of second transmission resources, and the processing unit is further configured to: based on the second indication information and the plurality of second transmission resources, A plurality of preset patterns within a transmission resource determine a plurality of second transmission resources, and the patterns are predefined.

Combined with the tenth aspect, in some implementations of the tenth aspect, the first transmission resource is a transmission resource in a connection event or a connection sub-event.

In conjunction with the tenth aspect, in some implementations of the tenth aspect, the first transmission resource includes a transmission resource in the first direction, or a transmission resource in the second direction, or a transmission resource in the first direction and a transmission resource in the second direction. .

In an eleventh aspect, a communication device is provided, which is provided 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 transceiver unit The unit is also configured to receive a second data packet sent by the second node. The second data packet includes indication information. The first indication information is used to indicate whether the second node has information to be transmitted and the type of information to be transmitted.

Combined with the eleventh aspect, in some implementations of the eleventh aspect, the type of information to be transmitted is control information or data information.

In conjunction with the eleventh aspect, in some implementations of the eleventh aspect, the indication information indicates that there is information to be transmitted, and the processing unit is further configured to send a third data packet to the second node through the transceiver unit, and the first data packet, the The second data packet and the third data packet are within a connection event; the transceiver unit is also used to receive the information to be transmitted sent by the second node.

In conjunction with the eleventh aspect, in some implementations of the eleventh aspect, 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 the information to be transmitted. The type, or , indicates that the information includes a field.

A twelfth aspect, a communication device is provided. The device includes: a memory for storing a program; a processor for executing the program stored in the memory. When the program stored in the memory is executed, the processor is configured to execute the first aspect. to the method provided by any implementation method in the sixth aspect.

In a thirteenth aspect, a computer-readable storage medium is provided, which is characterized in that: the computer-readable medium stores a computer program; when the computer program is executed by one or more processors, it causes a device including the processor to execute the above Any one of the implementation methods from the first aspect to the sixth aspect.

A fourteenth aspect provides a chip, characterized in that the chip includes a processor and a data interface, and the processor reads instructions stored in the memory through the data interface to execute any one of the above-mentioned first to sixth aspects. Ways to implement it.

A fifteenth aspect provides a terminal, which includes the device of any one of the above-mentioned seventh to eleventh aspects. The terminal can be a vehicle.

Description of drawings

Figure 1 is a schematic diagram of a possible wireless communication scenario provided by an embodiment of the present application;

Figure 2 is a schematic diagram of resources being preempted during data transmission provided by the embodiment of the present application;

Figure 3 is a schematic diagram of short-distance communication signaling provided by an embodiment of the present application;

Figure 4 is a schematic diagram of a timeline of short-distance communication provided by an embodiment of the present application;

Figure 5 is a schematic diagram of the timeline of another short-distance communication provided by an embodiment of the present application;

Figure 6 is a schematic diagram of a CIS connection event provided by an embodiment of the present application;

Figure 7 is a schematic flow chart of a communication method provided by an embodiment of the present application;

Figure 8 is a schematic diagram of determining the first transmission resource as the second transmission resource according to the second indication information according to the embodiment of the present application;

Figure 9 is a schematic diagram of data transmission within a connection interval provided by the embodiment of the present application;

Figure 10 is a schematic flow chart of another communication method provided by an embodiment of the present application;

Figure 11 is a schematic flow chart of yet another communication method provided by an embodiment of the present application;

Figure 12 is a schematic flow chart of yet another communication method provided by an embodiment of the present application;

Figure 13 is a schematic flow chart of yet another communication method provided by an embodiment of the present application;

Figure 14 is a schematic block diagram of a communication device provided by an embodiment of the present application;

Figure 15 is a schematic structural diagram of a communication device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

The communication method provided by the embodiment of the present application can be applied to scenarios where signal transmission occurs. In this scenario, signals are transmitted between two communication ends. The end that sends the signal is the signal sending end, and the end that receives the signal is the signal receiving end. The sending end and signal receiving end can change dynamically. For example, at the first moment, the communication terminal A sends a signal and serves as the signal sending terminal. At the second moment, the communication terminal A receives the signal and serves as the signal receiving terminal. And the communication terminal can be a signal sending terminal and a signal receiving terminal at the same time, communicating with different communication terminals.

Illustratively, the communication method provided by the embodiments of the present application can be applied to wireless communication scenarios, such as short-range wireless communication scenarios, wide-area wireless communication scenarios, or local area wireless communication scenarios, etc. In a wireless communication scenario, a certain communication area or range may include multiple communication domains. The communication domain may refer to a system composed of a group of communication nodes with communication relationships and communication connection relationships (i.e., communication links) between communication nodes. A communication domain may include a master communication node (which may be referred to as a master node) and at least one slave communication node (which may be referred to as a slave node). Among them, the master node manages the time-frequency resources of the communication domain and has the function of scheduling resources for communication links between communication nodes in the communication domain. For example, FIG. 1 shows a schematic diagram of a wireless communication scenario provided by an embodiment of the present application. In this wireless communication scenario, at least one master node and at least one slave node corresponding to each master node may be included. For example, as shown in Figure 1, the wireless communication scenario includes master node 1 and master node 2. Master node 1, slave node 1 and slave node 2 constitute communication domain 1, and master node 1 communicates with slave node 1 and slave node 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.

In an example case, when the wireless communication scenario shown in Figure 1 is a wide-area wireless communication scenario, 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 disposed on the network device. The network device may be, for example, a radio access network (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 (gNB), radio network controller (RNC), node B (Node B, NB), base station controller, BSC), base transceiver station (BTS), home base station (e.g., home evolved NodeB, or home Node B, HNB), baseband unit (BBU), wireless fidelity (Wi-Fi ), access point (AP), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP), etc. in the system.

In some deployments, RAN equipment may include centralized units (CU) and distributed units (DU). In addition, the RAN device may also include a radio unit (radio unit, RU). CU implements some functions of RAN equipment, and DU implements some functions of RAN equipment. For example, CU implements radio resource control (RRC) and packet data convergence protocol (PDCP) layer functions. DU implements Wireless link control (radio link control, RLC), media access control (media access control, MAC) and physical (physical, PHY) layer functions. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling or PDCP layer signaling, can also It is considered to be sent by DU, or sent by DU+RU. It can be understood that the network device may be a CU node, a DU node, or a device including a CU node and a DU node. In addition, the CU can be divided into network equipment in the RAN, or the CU can be divided into network equipment in the core network (CN), without limitation.

Terminal equipment may also be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, 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 (VR) terminal device, or an 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 on the above devices. The embodiments of this application do not limit application scenarios. In the embodiments of this application, terminal equipment with wireless transceiver functions and chips that can be disposed on the aforementioned terminal equipment are collectively referred to as terminal equipment.

In another example, when the wireless communication scenario shown in Figure 1 is a local area wireless communication scenario, the master node 1 and the master node 2 can be access points (AP), and the slave nodes 1 to 4 Can be a station.

In another example, when the wireless communication scenario shown in Figure 1 is a short-range wireless communication scenario, the examples of the master node and the slave node are different in different short-range wireless communication scenarios. For example, when the short-range wireless communication scenario is an in-vehicle wireless communication scenario, master node 1 and master node 2 can be cockpit domain controllers (CDC), and slave nodes 1 to 4 can be car music speakers, car Ambient lighting, etc. For another example, when the short-range wireless communication scenario is a smart wearable wireless communication scenario, master node 1 and master node 2 can be mobile phones, and slave nodes 1 to 4 can be headphones, watches, etc. For another example, when the short-range wireless communication scenario is a home wireless communication scenario, master node 1 and master node 2 can be home wireless gateways, and slave nodes 1 to 4 can be home appliances, etc. For another example, when the short-range wireless communication scenario is an industrial short-range wireless communication scenario, master node 1 and master node 2 can be industrial wireless gateways, and slave nodes 1 to 4 can be automated guided vehicles (AGVs). , machine tools, robots, etc.

Of course, the above-mentioned examples of master nodes and slave nodes are only examples, and this application does not limit them. It should be noted that when the wireless communication scenario shown in Figure 1 is other wireless communication scenarios, the master node and the slave node can also be other possibilities, and this application will not list them one by one here. In addition, the roles of the master node and the slave node can be changed dynamically, for example, the master node and the slave node are interchanged, or the master node becomes the slave node of other devices, and the slave node becomes the master node of other devices.

It should be noted that the number of master nodes and slave nodes shown in Figure 1 is only an example. In a wireless communication scenario, more or fewer nodes may be included, and this application does not limit this.

In the embodiment of this application, the node may also be called a communication node, a device (device), a communication device (device), etc.

Currently, there is a problem of weak multi-service concurrency capabilities in wireless communication scenarios. For example, Figure 2 shows a schematic diagram of resources being preempted during data transmission. As shown in Figure 2, when the service characteristics do not change or no new services arrive, the original service (denoted as service 1) is transmitted normally on the configured transmission resources. When the new service (denoted as service 2) arrives or the service When the characteristics of 1 change, it is necessary to allocate resources to business 2 or adjust the resources originally allocated to business 1. At this time, control information will be exchanged frequently between the slave node and the master node, that is, sudden information transmission requirements will occur, such as The slave node reports the characteristic information of service 2 to the master node, and the master node establishes a service logical channel based on the characteristic information of service 2.

Generally speaking, the transmission resources allocated by the master node to a slave node are limited, and burst information often requires multiple interactions between the slave node and the master node. As mentioned above, burst information includes the arrival of new services or the original The control information to be transmitted is generated when the business characteristics change. The priority of control information transmission is higher than the priority of business data transmission. Therefore, the transmission resources originally used for the data of business 1 will be preempted by the control information, and the data of business 1 will be preempted. Transmission efficiency is greatly reduced. Although the amount of control information data transmitted in a single transmission is small, if a transmission channel is to be established for service 2, the number of signaling interactions between nodes is large, which results in multiple consecutive data transmission opportunities for service 1 being controlled. Information preemption prevents the data of business 1 from being transmitted for a long time, resulting in the service quality of business 1 being reduced or even interrupted.

In addition, if a master node is connected to multiple slave nodes at the same time, if the transmission resources are not sufficient, 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 information from other slave nodes cannot be transmitted normally, information transmission efficiency is reduced, and service quality is reduced.

It can be seen that in wireless communication scenarios, when new services arrive or original service characteristics change, there may be problems such as low current service transmission efficiency or service transmission interruption.

Therefore, embodiments of the present application provide a communication method by splitting transmission resources into multiple resources in the first direction and resources in the second direction, thereby increasing the opportunities for transmission in the second direction between communication nodes within the transmission resources. , thereby increasing the number of interactions between communication nodes, so that the transmission of control information brought about by new business transmission requirements or business feature change requirements can be scheduled more efficiently, thereby reducing the waiting time for current business data transmission and improving transmission efficiency. In addition, since control information has less content than business data and has relatively low resource requirements, the fissioned resources can also meet the transmission requirements of control information and allow communication nodes to respond to each other's control information faster. , so while improving the transmission efficiency of current business data, the transmission efficiency of control information can be improved, and the transmission efficiency of new services or services with changed characteristics can be improved. It can be seen that the communication method provided by the embodiments of the present application can improve the quality of business services and the efficiency of information transmission, thereby solving the problem of weak concurrency capabilities in wireless communication scenarios.

Taking short-range communication as an example, please refer to Figures 3 and 4, which are respectively a signaling schematic diagram and a timeline schematic diagram of a short-range communication provided by an embodiment of the present application. In Figure 4, t represents the time axis, M represents the master node, and S represents the slave node; M→S represents the data packet sent by the master node to the slave node, and S→M represents the data packet sent from the slave node to the master node. As shown in Figures 3 and 4, the first node and the second node may initially be in a standby state. At this time, the first node and the second node do not establish connections with other devices, and do not transmit or receive data. The first node can enter the scanning state, in which case it can be called a scanner or observer; the second node can enter the advertising state, in which case it can be called an advertiser; broadcast The second node in the state can periodically send broadcast signals, which can be called broadcast packets. In one advertising event, 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 of the first node scanning to the second node. After scanning the second node, that is, after receiving the broadcast packet sent by the second node, the first node can send a connection request to the second node. At this time, the first node is in the initiating state. Called the initiator. The connection request includes a 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 transmit window. After sending the broadcast packet, the second node opens the 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 packet P2.

The above broadcast packets, connection requests, data packets P1, data packets P2, etc. can be different types of protocol data units. For example, the broadcast packet is advertising PDU (advertising PDU); the connection request is initiating PDU (initiating PDU). Data packet P1 and data packet P2 are data physical channel PDU (data physical channel PDU).

As the initiator, the first node can send a connection request on the primary advertising physical channel, and after the initiator sends the connection request, the initiator's link layer enters the connected state. At this time, the initiator ( The first node) serves as the master node (master/central). After the second node receives the connection request as the broadcaster, the link layer of the broadcaster enters the connection state. At this time, the broadcaster (second node) serves as the slave node (slave/peripheral).

Please refer to FIG. 5 , which is a schematic timeline diagram of another short-distance communication provided by an embodiment of the present application. The difference from Figure 4 is that the initiator sends a connection request on the secondary advertising physical channel, and the broadcaster receives the connection request and replies with a connection response. And when the initiator receives the connection response, the initiator's link layer (link layer) enters the connection state, and at this time the initiator serves as the master node (master/central). After the broadcaster sends a connection response, the broadcaster's link layer enters the connected state. At this time, the broadcaster acts as a slave node (slave/peripheral).

As shown in Figures 4 and 5, after the broadcaster sends the broadcast packet, the radio frequency window (Rx window) is opened after time T1 to receive connection requests from scanning nodes. The connection request includes the transmission window (transmit window) parameter determination. The transmission window parameters may 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). In addition, the position of the transmission window can also consider the transmission window delay T2, that is, it is determined based on the transmission window delay T2 and the transmission window offset. Then, the master node can send data packet P1 during the transmission window, and data packet P1 can be completely within the transmission window or outside the transmission window. The connection request may also include other parameters, such as a connection interval (connection interval, CI) parameter, which indicates the size of the connection interval. After entering the connection state, 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 a data packet to the master node. The connection state can It is called a connection event (event); the connection interval can also be called the transmission interval, and the connection event can also be called a transmission event. Interaction between the master node and the slave node can be carried out within the connection event. The interval between the M→S data packet and the S→M data packet within a round of interaction is the time interval T5. The time interval T5 is mainly used for transceiver conversion. After the master node or the slave node completes the data transmission, it starts receiving the receipt after the time interval T5 elapses; or, after the master node or the slave node completes the data reception, it starts data sending after the time interval T5 elapses. The time interval T5 may be stipulated in the protocol, or may be determined through negotiation between the sending and receiving ends. This application does not limit this. The time interval T5 may also be called inter frame space (IFS) time, or inter packet space (IPS) time, or conversion time interval. Other names that are different but serve as the time interval between receiving and sending are all within the protection scope of this application. In addition, time T1 is similar to time interval T5, and its values may be the same or different, which will not be described again here.

Subsequently, the master node will use the time point when it starts receiving data packet P1 as the anchor point (or origin), and the connection interval is the period, and periodically sends data packets to the slave node. When neither the master node nor the slave node has data to be sent, the master node and the slave node stop interacting until the next connection interval. After the master node and the slave node complete a round of interaction, whether to continue the interaction can be determined by the master node. When the master node determines to continue the interaction, the master node can continue to send data packets to the slave node. The slave node receives the data packets sent by the master node. After receiving and sending conversion, the slave node can send the data packets to the master node. The length of time it takes for the master node and the slave node to send data is not fixed and depends on the size of the data packet, but is subject to the maximum transmission time.

Communication nodes (such as master nodes or slave nodes) may not have business data to send or receive, but communication nodes will still exchange data packets to maintain the connection. At this time, the exchanged data packets are empty packets. This application does not limit the number of data packets. Type, which can be an empty packet or a data packet carrying business data.

The connection request can also include a latency parameter, which is used to indicate how many connection events the slave node can skip, that is, the slave device can skip (or not listen to the master node) consecutive connection events (or number of connection intervals). For example, if the value of this delay parameter is set to N, the slave node can reply to the master node only once 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 that needs to be reported to the master node, it does not need to wait until the Nth connection interval before reporting, which not only saves power consumption, but also improves the real-time nature of data transmission.

In addition, the connection request may also include at least one of the following parameters: addresses of the initiator and broadcaster, such as MAC addresses, access addresses (the link layer can distinguish the type of data packets based on this address), cyclic redundancy check Cyclic redundancy error check (CRC) initial value, timeout value (the primary node and the secondary node can maintain a monitoring timer. When a valid data packet is received, the timer is reset. When the timer reaches the timeout value indicates that the link connection is lost), channel map (used to indicate the data channels that can and cannot be used), frequency hopping (hop), used to indicate the data channel selection in the frequency hopping algorithm hop increment, sleep clock accuracy.

In daily life, there may be multiple users' needs to connect to the same device through Bluetooth. For example, several friends want to listen to music on the same smartphone through Bluetooth headsets at the same time. In order to better support this requirement, the concept of connected isochronous stream (CIS) is introduced in short-distance communications. CIS is a logical transport that enables connected devices to transmit isochronous data in either direction. CIS supports variable-sized packets and the transmission of one or more packets per isochronous event.

Please refer to Figure 6, which is a schematic diagram of a CIS connection event. A 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. The interval between CIS anchor points is the CIS event interval, which can be determined according to the interval parameter.

Each CIS event can include one or more connection sub-events (also called transmission sub-events, referred to as sub-events). Each sub-event is used to transmit a data packet from the master node to the slave node. The data packet can follow the pair of slave nodes. For the response of the master node, this application does not limit that all sub-events in an event need to be used, or they may not be used. The first sub-event of the CIS event (sub-event 1 in the figure) starts from the CIS anchor point and ends in the data packet of the slave node, such as the S→M packet in sub-event 1 in the figure, if the slave node does not send data packet, then the data packet ends at the master node. The number of sub-events in a CIS event does not exceed the maximum number of sub-events, which is configured by parameters. The interval between sub-events (referred to as sub-interval for short) can be configured by a parameter, which can 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.

Due to changes in users' business needs, after the master node and slave nodes interact in the connection state for a period of time, the connection parameters may no longer meet the needs of the current business. Therefore, in order to improve the business service quality, the connection parameters can be updated using the connection parameter update process. , this process involves a large number of control signaling interactions between the master node and the slave node, resulting in low service transmission efficiency or service interruption. Therefore, the time that can be used for transmission in the above event or sub-event is split into multiple transmission opportunities, thereby increasing the transmission opportunities between communication nodes within the 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 scheduled more efficiently, thereby reducing the waiting time for current service data transmission and improving transmission efficiency.

Figure 7 shows a schematic flow chart of a communication method provided by an embodiment of the present application. The method shown in Figure 7 can be applied to short-distance communication scenarios in the fields of smart terminals, smart homes, smart manufacturing, and smart cars, including scenarios such as mice, keyboards, wearable devices, and TWS headsets. The method shown in Figure 7 includes steps 701 to 703, which are introduced respectively below.

S701. The first node sends first indication information to the second node. Correspondingly, the second node receives the first indication information sent by the first node. The first indication information is used to determine the first transmission resource.

The embodiment of the present application splits transmission resources in the time domain to obtain more transmission opportunities in the time domain. Therefore, the first transmission resource can be understood as a transmission resource in the time domain, or the first transmission resource can be viewed from the perspective of the time domain.

Regarding the determination of frequency domain resources, the embodiments of this application are not limited. Frequency domain resources can be configured by the master node (dynamic configuration or semi-static configuration), or frequency hopping technology can be used to realize frequency domain resource allocation. For example, in short-distance communication scenarios, the frequency band is divided into multiple hop channels, and then frequency hopping sequences are used to convert the hop channels to reduce interference. This application does not limit the method of determining frequency hopping channels, nor does it limit the number of frequency hopping channels and the frequency of frequency hopping.

In one implementation, 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 for the master node to transmit data packets to the slave node, and the transmission resources in the second direction refer to the resources used for the slave node to transmit data packets to the master node. That is, the embodiment of the present application can transmit data packets from the slave node to the master node. The available transmission resources in one direction can be fissured, or the transmission resources in one direction can only be fissured. 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.

For example, in short-distance communications, the first indication information may include at least one parameter, which is used to determine the transmission resource in a connection event or a connection sub-event, that is, to determine the starting position and size of the transmission resource. Transmission resources are transmission resources that can be used by transmission nodes, not the transmission resources that are ultimately used. Whether or not the transmission resources are ultimately used or which resources in the transmission resources are used can be determined based on actual business conditions.

In one implementation, the first indication information includes a connection interval parameter. The connection interval parameter is used to indicate the time between two consecutive or adjacent connection events. The reference points of the two connection events can be anchor points. . The second node determines the connection interval according to the connection interval parameter, and uses all or part of the time domain resources within the connection interval as the first transmission resource for fission, and during fission, different directions after fission can be determined according to the preset time interval. The transceiver conversion time between resources is used to determine the distribution of resources in the time domain after fission. The transceiver conversion time before and after fission may be different.

In yet another implementation, 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 are preset, for example, agreed upon by the protocol. , at this time, the second node can determine the start time of the event based on the connection interval parameter and the anchor point of the connection event, and the start time is used as the starting point of resource R11; determine resource R11 based on the size of resource R11; and then determine the resource R11 according to the fission The location of the resource R12 is determined based on the previous transceiver conversion time, and further, the resource R12 is determined based on 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 transceiver conversion time before fission, and R12 as the first transmission resource to perform fission. During fission, the preset time interval is used. Determine the transceiver conversion time between resources in different directions after fission, where the transceiver conversion time before and after fission may be different. Alternatively, the sizes of resource R11 and resource R12 are determined by parameters, which are respectively called parameter PR11 and parameter PR12. Then the first indication information may also include parameter PR11 and parameter PR12. The sizes of resource R11 and resource R12 can be the same or different.

In yet another implementation, 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 are dynamically changed. 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. The second node can respectively determine the time T11 for the master node to transmit the maximum M→S data packet to the slave node and the time T12 for the slave node to transmit the maximum S→M data packet to the master node based on this parameter. The second node uses the time domain resources corresponding to times T11 and T12 as the first transmission resources to perform fission.

In another implementation, the first indication information includes a sub-interval (sub-interval) parameter, the sub-interval parameter is used to indicate a sub-interval, and the sub-interval is a time between two consecutive or adjacent sub-events. The second node can determine the starting time of a sub-event based on the sub-interval parameters and the anchor point of the connection event, and use all 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 transceiver conversion time 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. The transceiver conversion time before and after fission may be different.

In another implementation, the first indication information includes sub-interval parameters, and the sizes of the resource R21 for the first direction transmission and the resource R22 for the second direction transmission in each sub-interval are preset, for example, agreed upon by the protocol. , at this time, the second node can determine the starting time of a sub-event based on the sub-interval parameter and the anchor point of the connection event, and the starting time is used as the starting point of resource R21; determine resource R21 based on the size of resource R21; Then, the location of the resource R22 is determined based on the transceiver conversion time before fission, and further, the resource R22 is determined based on 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 perform fission. During fission, the transceiver conversion time between resources in different directions after fission is determined according to the preset time interval. Among them, before and after fission The transceiver conversion time may be different. Alternatively, the sizes of resource R21 and resource R22 are determined by parameters, which are respectively called parameter PR21 and parameter PR22. Then the first indication information may also include parameter PR21 and parameter PR22. The sizes of resource R21 and resource R22 can be the same or different.

In yet another implementation, the first indication information includes sub-interval parameters, and the sizes of resources R21 for transmission in the first direction and resources R22 for transmission in the second direction within each sub-interval are dynamically changed. 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. The second node can respectively determine the time T21 for the master node to transmit the maximum M→S data packet to the slave node and the time T22 for the slave node to transmit the maximum S→M data packet to the master node based on this parameter. The second node uses the time domain resources corresponding to times T21 and T22 as the first transmission resources to perform fission.

S702: The first node sends second indication information to the second node. Correspondingly, the second node receives the second indication information sent by the first node. The second indication information is used to determine a plurality of second transmission resources, and the plurality of second transmission resources. The 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 transmission resources in the first direction refer to the resources used to transmit data packets from the master node to the slave node, and the transmission resources in the second direction refer to the resources used to transmit data packets from the slave node to the master node, and for the transmission resources in both directions The order is not limited.

The second indication information directly indicates multiple second transmission resources, or may indirectly indicate multiple second transmission resources, and the second indication information may include one or more parameters, which will be further described later. In the second transmission resources, 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. The sizes of the transmission resources in the first direction and the transmission resources in the second direction may be the same or different.

In the embodiment of the present application, the original available transmission resources are split into multiple transmission resources in different directions. Since the amount of data transmitted in a single transmission of control information is small, the second transmission resource after fission can satisfy the single transmission of control information. needs, and multiple second transmission resources can meet multiple first-direction and second-direction transmission requirements for control information between the first node and the second node.

S703. The first node and the second node communicate through at least one second transmission resource.

The first node and the second node communicate on the second transmission resource. The communication here 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 sending a data packet through the transmission resource in the second direction. Send a data packet to the first node, and the data packet carries control information, or business data, or may be an empty packet. Correspondingly, 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 (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 part of the second transmission resource to transmit information, for example, when there is no communication between the first node and the second node. When a large number of transmissions is required, information can be transmitted only on a second transmission resource, that is, only one transmission in the first direction (for example, M→S) and one transmission in the second direction (for example, S→M); When there is a need for more transmission times between the first node and the second node, information can be transmitted 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 of unsatisfied multiple interaction requirements for control information between nodes.

The plurality of 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, number of transmissions, 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. It may indicate only the start time of one second transmission resource, or may indicate multiple second transmissions. The start time of the resource; in addition, the start time of the transmission resource in the first direction and the transmission resource in the second direction in the second transmission resource may be indicated respectively, or the start time of only one direction of the transmission resource 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. It may indicate the end time of only 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 in the first direction and the transmission resource in the second direction in the second transmission resource may be indicated respectively, or the end time of only the transmission resource in 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. At this time, the width of the multiple second transmission resources in the time domain is uniform (the same), or the width of the multiple second transmission resources in the time domain is The width changes according to a preset rule (preset linear relationship); or, multiple time granularity parameters can be used to indicate the width of each second transmission resource in the time domain. The preset time interval is the interval in the time domain between the transmission resources in the first direction and the transmission resources in 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, the number of transmissions in the second direction, or the number of transmissions in the first and second directions of multiple second transmission resources. The number of transmissions is used to indicate fission, not the actual number of transmissions. Real 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, etc.

The second indication information may include one of the following parameters: transmission start time, time granularity, preset time interval, number of transmissions, and transmission end time. For example, the second indication information includes the number of transmissions 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, agreed upon by 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 determine each other. (a) in Figure 8 shows the situation where the second transmission resource is determined only by the number of transmissions. When the transmission start time, preset time interval, and transmission end time are all determined, if the number of transmissions is determined again, due to the time 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 the initial first transmission resource is split into. The transmission resources, and the width of each first direction transmission resource and the second direction transmission resource in the time domain can be determined, that is, the time granularity can be determined, so in this case the second indication information only needs to include the number of transmissions, that is, Can. As shown in (a) of Figure 8, 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. 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 a fixed 2ms, and the preset time granularity is uniform, then the second indication information can only include transmission at this time The number of times is 8 times, then the first transmission resource in Figure 8(a) 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 can be converted into a second transmission resource. Both are 2ms.

For another example, the preset time interval is not determined, or the multiple second transmission resources are not the same as the transmission start time and transmission end time of the initial first transmission resource, or the time granularity is uneven, and the first transmission resources are not evenly divided. There are 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. In this case, the time granularity and the number of transmissions cannot determine each other, then the second indication information can Including transmission start time, time granularity, preset time interval, number of transmissions, transmission end time and other parameters. As shown in (b) of Figure 8, 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), and the preset time interval is still a fixed 2ms, then at this time, the The second indication information includes: transmission start time, time granularity, and number of transmissions. For example, the transmission start time of the first second transmission resource is 1 ms later than the transmission start time of the first transmission resource. For example, assuming that the start of the first transmission resource is the 0th ms, then the transmission of the second transmission resource is determined at this time. The starting time is 1ms, the time granularity is 2ms for transmission resources in the first direction, 1ms for transmission resources in the second direction, and 8 transmission times. According to the second indication information, the first transmission resource in (b) of FIG. 8 can be converted into a second transmission resource.

The second indication information may 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 based on the first transmission resource without indicating the transmission start time, or the first transmission time can be preset. The relationship between the starting time of the second transmission resource and the starting time of the first transmission resource, etc. In addition, the number of the second transmission resources is not indicated and can change dynamically according to the information to be sent. The first node and the second node dynamically determine the number of each service to be sent based on the time granularity based on the transmission situation of the information to be sent. The starting time, and then stops sending after the service is sent, that is, fission is a dynamic process. The number of second transmission resources changes according to the actual sending situation, and the second indication information can indicate the time granularity. At this time, there is no need to indicate the transmission end time.

Optionally, 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 of the second transmission resources within the first transmission resource. For example, 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. In an implementation, the resource distribution situation of the second transmission resource within the first transmission resource can be pre-agreed. The distribution situation can be one, and then the second indication information can realize the control of the first transmission resource through only one bit. Fission, that is, when the second indication information is the first value, fission of the first transmission resource is activated. At this time, the implementation is simple and requires less information overhead; or the distribution situation can include multiple types, that is, the second transmission The resources include multiple patterns in the first transmission resource. The second indication information can 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. For example, the second indication information is used to indicate pattern 1, and the first transmission resource is split into multiple second transmission resources corresponding to the preset pattern 1 according to the second indication information, thereby achieving the purpose of activating multiple second transmission resources. , and the second indication information no longer needs to include specific information such as transmission start time, time granularity, preset time interval, number of transmissions, transmission end time, etc., which saves signaling overhead and can be flexibly adapted to the needs of different services or scenarios.

Optionally, the configuration of the pattern may be implemented through the configuration of connection events or connection sub-events. For example, the first node can configure the parameters of the pattern in the connection request during the connection establishment process shown in Figure 4 or Figure 5 above; another example can be in the connection state, through the data packet transmitted in the parameter update process. To configure the parameters of the pattern, the embodiment of the present application does not limit the process in which the pattern configuration is performed.

Optionally, the first transmission resources used for fission may include transmission resources in the first direction and transmission resources in the second direction, or may include only transmission resources in the first direction or only transmission resources in the second direction, depending on the Specific situations and requirements set.

The data packet mentioned in the above embodiment may be a PDU, specifically a data physical channel PDU, such as a link layer data PDU or a link layer control PDU.

The communication method shown in Figure 7 splits the initial limited transmission resources into multiple transmission resources. Although the width of each transmission resource after the fission is reduced in the time domain, it can still meet the requirement of small single transmission data volume. At the same time, the multiple transmission resources after fission can also meet the multiple transmission requirements of control information. Therefore, service transmission efficiency is improved. In addition, the fission of transmission resources is controllable. The transmission start time, time granularity, preset time interval, number of transmissions, and transmission end time of the fissioned transmission resources can be set according to actual needs, or multiple fission patterns can be provided to suit different needs. business needs, further improving business transmission efficiency.

The above describes the establishment process of the connection event in conjunction with Figure 4 and Figure 5. After the master node and the slave node enter the connection state, when the data transmission is completed, the connection event can be closed. For example, the data physical channel PDU includes a field (more data, MD), and the communication node uses the MD field to inform the communication peer whether there is more data to be sent.

The existing MD field mechanism is shown in Table 1.

Table 1

An MD of 0 indicates that there is no data to be transmitted, and an MD of 1 indicates that there is still data to be transmitted. As can be seen from Table 1, only when the MD of the data packets sent by the master node and the slave node is 0, the master node and the slave node will no longer continue to interact, and when either the master node or the slave node has an MD of 1, Interaction between master and slave nodes may continue. Since the communication is initiated by the master node, it is up to the master node to decide whether to continue the interaction. For example, if the slave node needs to continue transmitting information with the master node after this transmission, the slave node will set the field MD in the header of the data packet sent to the master node to the value "1", which is used to send the message 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 (CE) based on the value of the MD field. When the MD of the data packets sent by the master node and the slave node are both 0, the master node closes the current connection event, that is, stops sending messages to Send packets from node.

Figure 9 shows a schematic diagram of data transmission within a connection interval. As shown in Figure 9, within a connection interval, there can be a connection event between the master node and the slave node, and multiple data interactions are allowed within the connection event. . For example, when a slave node sends a data packet for the first time, it sends an MD field to indicate to the master node that the data from the slave node has not been sent completely and there is still data that needs to be sent. After receiving the MD field, the master node can continue to communicate with the slave node. Nodes interact with data. However, this interaction method is not very flexible and may not meet business needs, resulting in low transmission efficiency. For example, in Figure 9, when the slave node sends a data packet, it sends the MD field to indicate to the master node that the data from the slave node has not been sent completely, and there is still data that needs to continue to be sent. After the master node receives the MD field, due to resource conflicts, Or insufficient or other reasons, it may still no longer continue to interact with the slave node, then 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 being unable to be met, especially for high-speed Prioritized services will lead to degraded user experience.

Therefore, embodiments of the present application provide a communication method. When the slave node has a preset type of information that needs to be transmitted, it can instruct the master node to continue the interaction of information transmission to ensure timely and complete transmission of important information. Figure 10 shows a schematic flow chart of a communication method provided by an embodiment of the present application. The method shown in Figure 10 can be applied to short-distance communication scenarios in fields such as smart terminals, smart homes, smart manufacturing, and smart cars. For example, it includes mouse, keyboard, wearable devices and TWS headsets. The method shown in Figure 10 includes step 1001 and step 1002, which are introduced respectively below.

S1001. The first node sends a first data packet to a second node. 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 interaction between a first node and a second node, where in a connected state, the first node may be a master node and the second node may be a slave node.

Taking the short-distance communication scenario as an example, 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. At this time, the communication is initiated by the first node, and the second node is based on the first node. Reception of data packets sent by one node, sending information to the first node. Optionally, the first data packet here can be an empty data packet. As long as the second node receives the first data packet, regardless of whether the first data packet is empty, the second node can based on the data packet sent by the first node. Receive and send information to the first node.

S1002, the second node sends a second data packet to the first node based on the reception of the first data packet. Correspondingly, 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 the type of information to be transmitted.

When sending a data packet to the first node, the second node also sends indication information. The indication information is used to indicate whether the second node still has information to be transmitted. If there is information to be transmitted, it also indicates the type of information to be transmitted. The indication information can reuse the MD field, that is, the MD field is used to indicate whether the second node still has information to be transmitted and the type of information to be transmitted; or a new field can be added based on 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 new field is used to indicate the type of information to be transmitted.

If the second node indicates that there is still information to be transmitted, and the type of the information to be transmitted indicates that it is important information, such as control information or data information of a specific service, 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 within a connection event, where the third data packet can include control information or data information, or it can be an empty packet, the first node sends a message 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. Therefore, after the second node receives the third data packet sent by the first node based on the indication information, the second node can send the information to be transmitted to the first node based on the reception of the third data packet. Correspondingly, the data packet of the information to be transmitted may also include indication information used to indicate whether the second node has any information to be transmitted next, and if so, indicate the type of information to be transmitted. Therefore, all the information to be transmitted by the second node can be transmitted in one connection event, without having to wait 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-end users. For priority services, the method in Figure 10 can ensure the real-time performance of high-priority services, thereby improving the user experience. Specific services are, for example, high-priority services or preset services. Services whose priority reaches or is higher than the preset priority can be considered as high-priority services.

Optionally, the indication information may include only one field to indicate whether there is information to be transmitted and the type of information to be transmitted, or the indication information may include a first field and a second field, 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. Optionally, in order to save signaling overhead, this field has 2 bits, which are used to describe whether there is information to be transmitted and the type of the information to be transmitted. Or the first field has 1 bit, used to indicate whether there is information to be transmitted, and the second field has N bits, used to indicate the type of information to be transmitted, and the N is determined according to the amount of the type of transmission information that needs to be indicated. Value, for example, if two types of control information and service data information (referred to as data information) are indicated, N can take a value of 1; if more service data types are indicated, more bits can be set.

The communication method shown in Figure 10 adds indication information 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 to have 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 where the slave node is unable to transmit important information because it has no initiative, and improving the transmission of important information. Possibility of scheduling. For example, when the master node needs to interact with multiple slave nodes at the same time, it determines that slave node A has a higher priority based on the instruction information received from the multiple slave nodes, so it preferentially interacts with slave node A. , that is, the data from node A is transmitted first, improving the transmission efficiency of important information.

Figure 11 shows a schematic flow chart of another communication method provided by an 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. , including in scenarios such as mice, keyboards, wearable devices, and TWS headsets. The method shown in Figure 11 includes S1101 to S1102, which are introduced respectively below.

S1101. The first node sends indication information to the second node. Correspondingly, the second node receives the indication information sent by the first node. The indication information indicates transmission resources, and the transmission resources are reserved resources or shared resources.

The communication method in the embodiment of the present application is used for interaction between a first node and a second node, where in a connected state, the first node may be a master node and the second node may be a slave node.

In addition, there is no limit to the indication of transmission resources in this embodiment of the application. It can be a direct indication or an indirect indication. Optionally, the indication method can be similar to the above indication of the first transmission resource, and the transmission can be identified by an identifier. Resources are reserved resources or shared resources.

In some cases, such as the communication method shown in Figure 10, if a slave node has more information to transmit, and the master node agrees to transmit more information with the slave node, it may exceed the amount of information that the master node has predetermined. The transmission resources configured by the slave node occupy the transmission resources of other slave nodes, making the information transmission of other slave nodes unable to be guaranteed, which may lead to a decrease in communication quality and affect the user experience. Therefore, in the communication method shown in Figure 11, 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.

When the above transmission resources are reserved 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 may be a node in a preset node set (list) , this 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, the second node will be used as the target node. The importance of the transmitted information may be determined by its type. It may be pre-agreed. Control information or certain data information is important information. The first node configures reserved resources for the second node. The reserved resources are resources that cannot be occupied by other slave nodes (non-target slave nodes). During the information transmission process, 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 perform the process. Transmission of information to be sent.

When the above transmission resources are shared resources, the indication information indicates that the transmission resources are shared resources. The shared resources are resources that can be occupied by multiple (or all) slave nodes, and the indication information can be broadcast information. For the slave node, when the dedicated transmission resources allocated by the master node are used up, if there is still data to be sent, the shared resources can be used to send it. However, since the shared resources are limited, it cannot be used by multiple slave nodes at the same time. Therefore, the communication method shown in Figure 11 also sets conditions for slave nodes to use shared resources. Specifically, 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 value. Numeric value does not need to be indicated by indication information. When the second node shown in Figure 11 needs to use shared resources, it first generates a random number. If the random number and the preset value satisfy the first relationship, the second node can use the shared resources to transmit information with the first node. Interaction, if the first relationship is not satisfied, the second node cannot use the shared resource to interact with the first node for information transmission. The first relationship may be that the random number is greater than or equal to the preset value, or the first relationship may be that the random number is less than the preset value. The first relationship may be preset, and the embodiments of the present application are not limited here. Optionally, the shared resource can be a semi-static resource, which means that multiple shared resources can be configured within one connection event. If the second node meets the conditions for using the shared resource, it can occupy the shared resource multiple times in a row. Among them, the specific number of consecutive occupancies can be pre-agreed or determined by the second node generating a random integer in [1, N], where N is the maximum number of consecutive occupancies.

S1102. The second node determines transmission resources according to the indication information.

Specifically, when the transmission resource is a reserved resource, 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 non-target slave nodes. The target slave node Use the reserved resources to transmit information with the first node. If the second node is the target slave node, the second node uses the reserved resources to transmit information with the first node; when the transmission resources are shared resources, the second node The shared resource is determined according to the indication information. When the second node still has information to be transmitted and the occupancy conditions are met, the second node can occupy the shared transmission resource to transmit the information with the first node, where the information to be transmitted can be Control information or data for preset services.

In the communication method shown in Figure 11, the master node configures additional transmission resources for the slave node. When the additional transmission resources are reserved resources, the slave node can be provided with data transmission, reducing the transmission quality caused by the occupation of other slave nodes. decline. When the additional transmission resources are shared resources, on the one hand, the transmission quality of slave nodes with important information to be transmitted can be guaranteed, and on the other hand, the slave nodes can be reduced from occupying the transmission resources of other slave nodes for the transmission of important information, thus Ensure overall communication quality.

Another communication method provided by the embodiment of the present application is introduced below with reference to the drawings and examples.

Figure 12 shows a schematic diagram of another communication method according to the embodiment of the present application, which splits the transmission resources of a single interaction into transmission resources of multiple interactions in the time domain, increasing the number of interactions. The method shown in Figure 12 is a specific implementation of the method shown in Figure 7. Specifically, the instruction information sent by the first node to the second node includes the connection interval parameter or sub-interval parameter to determine the resources R11 and R12. Or resources R21 and R22, the second node performs fission according to the determined resources R11 and R12 and the transceiver conversion time before fission or the determined resources R21 and R22 and the transceiver conversion time before fission. In Figure 12, the first node serves as the master node and the second node serves as the slave node.

As shown in Figure 12, the master node sends the first indication information including the connection interval parameter or sub-interval parameter to the slave node to determine the initial transmission resources. The initial transmission resources include the initial transmission resources in the first direction, the second direction Initial transmission resources. The master node uses the initial transmission resources in the first direction to communicate with the slave node. The slave node uses the initial transmission resources in the second direction to communicate with the master node. The initial transmission resources in the first direction refer to the initial transmission resources for the master node. Resources for transmitting data packets to the slave node. The initial transmission resources in the second direction are resources for transmitting data packets from the slave node to the master node. When new services arrive, frequent control information exchanges are required. If initial transmission resources are used for interaction, only one piece of control information in the first direction can be transmitted in the initial transmission resources in the first direction each time. If the control The information interaction process is lengthy and requires multiple interaction cycles to complete the interaction. The time span is long and may affect the transmission of other services.

Therefore, the data transmission method in the embodiment of the present application splits the initial single transmission resource into multiple transmission resource pairs. For some important data (such as control information), the data volume is not large, so only a small time granularity is required. Transmission resources can complete data transmission in the time domain corresponding to the original single transmission resource.

Specifically, the master node sends second instruction information to the slave node, which is used to instruct the initial transmission resources in the first direction, the initial transmission resources in the second direction, and the transceiver conversion time between the two to be split into multiple transmission resource pairs, As shown in Figure 12. The indication information may include one or more parameters including transmission start time, time granularity, number of transmissions, preset time interval, transmission end time, and other parameters. Optional, generally speaking, the preset time interval is determined by hardware conditions such as equipment, and the transmission start time and transmission end time can be determined by the start time and end time of the original transmission resource, and the time granularity and the number of transmissions affect each other. Therefore, the indication information may only include the time granularity or the number of transmissions. Optionally, the protocol can pre-agree on a fixed fission method. Each fission method corresponds to an index. The index can indicate different fission methods. Different fission methods can include different time granularity, number of transmissions, preset time intervals, etc. . For details, reference may be made to the above description of FIG. 8 , and the embodiments of the present application will not be described again here.

In Figure 12, the transceiver conversion time between the initial transmission resources in the first direction and the initial transmission resources in the second direction can also be used for fission, and the preset time interval is used to determine the transmission resources in the first direction and the fission after fission. The transceiver conversion time between the transmission resources in the second direction may be different. The transceiver conversion time before fission may be different from the transceiver conversion time after fission. For example, the transceiver conversion time before fission is 4ms, and the preset time interval is 1ms, then the transceiver 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 still data that needs to be transmitted, but also indicating the type of data to be transmitted. Table 2 shows the mechanism of the communication method.

Table 2

As shown in Table 2, the indication information can be a field, including 2 bits, where the first bit indicates whether there is information to be transmitted, and is 1 if there is, and 0 if there is not, and the second bit indicates the type of information to be transmitted, where, The preset type is 1, and the non-preset type is 0. Control information or certain business data can be used as the preset type. Or the indication information can be two fields, each field is 1 bit, where the first field indicates whether there is information to be transmitted, 1 if there is, and 0 if there is not, and the second field indicates the type of information to be transmitted, where , is the preset The type is 1, and the type that is not the default is 0. Control information or certain business data can be used as the default type. In particular, when there is no information to be transmitted, the type of 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 the information to be transmitted is not a preset type; 11 indicates that there is information to be transmitted, and the type of the information to be transmitted is a preset type. Therefore, when the indication information of both the master node and the slave node is 00, the master node closes the connection event and the slave node no longer continues to listen; when the indication information of either the master node and the slave node is 11, the master node needs to continue the connection event , the slave node needs to continue to listen; in other cases, the master node may continue to connect events, which is decided by the master node. For example, if the transmission resources are sufficient at this time, even if the information to be transmitted is not of the preset type, the master node can continue to transmit information with the slave node. Interaction, the slave node needs to continue listening.

In the communication method of the embodiment of the present application, the data packet header 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 a preset type. This can ensure that the slave node can complete the transmission of important information with the master node, thereby ensuring Communication quality.

Figure 13 shows a schematic diagram of yet another communication method provided by an embodiment of the present application. Corresponding resources are configured through broadcast messages, thereby protecting important data transmission from being interrupted. The method in Figure 13 is a specific implementation of the method in Figure 11. In Figure 13, the first node serves as the master node and the second node serves as the slave node.

As shown in Figure 13, in the first aspect, the master node can configure reserved resources through broadcast messages. The reserved resources are unoccupied resources. The unoccupied resources are used to transmit preset types of data, including control information. Or important business data, and the important business data may be data of a preset type of business. When the slave node determines based on the preset time interval that the time resources of the ordinary data (that is, non-preset type data) to be sent will conflict with resources that cannot be occupied, the slave node will not send the ordinary data; when the master node When it is determined based on the preset time interval that the time resources of the ordinary data to be sent conflict with resources that cannot be occupied, the master node will not send the ordinary data.

As shown in Figure 13, in the second aspect, the master node can configure burst resources through broadcast messages. The burst resources are shared resources and allow the slave nodes to use the burst resources to transmit preset types of data. The data of the preset type includes control information or important business data, and the important business data may be data of a preset type of business.

Specifically, for a slave node, after the dedicated transmission resources allocated by the master node to 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 to the master node. In order to reduce the long-term occupation of burst resources, you can determine whether the slave node can occupy the burst resources by setting a probability. For example, the slave node generates a random number within a preset range, such as a random number between 0 and 1, and then compares the random number with the system's preset value P1. If the random number and P1 meet a certain For example, if the random number is less than P1, the slave node can occupy burst resources. If the random number is greater than or equal to P1, the slave node cannot occupy burst resources. Or, each time the slave node occupies a burst resource, the count value is increased by 1. When the count value does not reach the threshold, the slave node can use the burst resource. When the count value reaches the threshold, the slave node cannot use the burst resource.

As shown in Figure 13, burst resources can be semi-static resources, that is, they are periodic within a certain period of time. Therefore, when a slave node is determined to be able to occupy burst resources, the number of times the slave node can be continuously occupied can be further determined. For example, the protocol agreement or the maximum number of consecutive occupations allowed by the master node configuration. 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 a control PDU. Control PDU.

It should be understood that the various embodiments described in the embodiments of this application can be independent solutions or can be combined according to internal logic, and these solutions all fall within the protection scope of this application.

Above, the communication method provided by the embodiment of the present application has been described in detail with reference to FIGS. 6 to 13 . Hereinafter, the communication device provided by the embodiment of the present application will be described in detail with reference to FIGS. 14 and 15 . It should be understood that the description of the device embodiments corresponds to the description of the method embodiments. Therefore, for content that is not described in detail, please refer to the above method embodiments. For the sake of brevity, they will not be described again here.

Figure 14 is a schematic block diagram of a communication device provided by an embodiment of the present application. The device 1400 includes a transceiver unit 1410 and a processing unit 1420. The transceiver unit 1410 can implement corresponding communication functions, and the processing unit 1420 is used for data processing. The transceiver unit 1410 may also be called a communication interface or communication unit.

Optionally, the device 1400 may also 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 foregoing method embodiments. .

The device 1400 can be used to perform the actions performed by the second node in the above method embodiment. Specifically, the transceiver unit 1410 is used to perform transceiver-related operations on the second node side in the above method embodiment. The processing unit 1420 uses Perform operations related to processing on the second node side in the above method embodiment.

The device 1400 can implement steps or processes corresponding to the second node side execution in the method embodiments according to the embodiments of the present application. The device 1400 can include a method for executing the second node side in Figures 7, 10 and 11. The unit of execution of the method. Moreover, each unit in the device 1400 and the above-mentioned other operations and/or functions are respectively intended to implement the corresponding processes of the method embodiments on the second node side in FIG. 7, FIG. 10, and FIG. 11.

When the device 1400 is used to execute the method 700 in Figure 7, the transceiver unit 1410 can be used to execute step 701 and step 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.

Specifically, the transceiver unit 1410 is configured to receive the first indication information sent by the first node, and 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, and the first indication information is used to determine the first transmission resource. The two 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 a transmission resource in the first direction and a transmission resource in the second direction; the processing unit 1420 , used to communicate with the first node through the transceiver unit 1410 on at least one second transmission resource among the plurality of second transmission resources obtained according to the second indication information.

In a possible implementation, the second indication information includes one or more of transmission start time, time granularity, preset time interval, number of transmissions, and transmission end time.

In a possible implementation, 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 within the first transmission resource. The second transmission resource, the pattern is predefined.

In one possible implementation manner, the first transmission resource is a transmission resource in a connection event or a connection sub-event.

In a possible implementation manner, the first transmission resource includes transmission resources in the first direction, 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 device 1400 and the above-mentioned other operations and/or functions are respectively intended to implement the corresponding processes of the method embodiment on the second node side in Figure 10 .

When the device 1400 is used to execute the method 1000 in Figure 10, the transceiver unit 1410 can be used to execute step 1001 in the method 1000, and the processing unit 1420 can be used to execute step 1002 in the method 1000.

Specifically, the transceiver unit 1410 is configured to receive the first data packet sent by the first node; the processing unit 1420 is configured to send the second data packet to the first node through the transceiver unit 1420 based on the reception of the first data packet. The 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 information to be transmitted.

In one possible implementation, the type of information to be transmitted is control information or data information.

In one possible implementation, the indication information indicates that there is information to be transmitted, and the transceiver unit 1410 is further configured to: receive the third data packet sent by the first node, and the first data packet, the second data packet and the third data packet are connected in one connection. Within the event; the processing unit 1420 is also configured to, based on the reception of the third data packet, send the information to be transmitted to the first node through the transceiver unit.

In a possible implementation, 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 the type of 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 device 1400 and the above-mentioned other operations and/or functions are respectively intended to implement the corresponding processes of the method embodiment on the second node side in Figure 11.

Wherein, when the device 1400 is used to execute the method 1100 in Figure 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.

Specifically, the transceiver unit 1410 is used to receive indication information, and the indication information is used to indicate transmission resources, and the transmission resources are reserved resources or shared resources; the processing unit 1420 is used to determine transmission resources according to the indication information.

In one possible implementation manner, the second node is the target node, the transmission resources are reserved resources, and the first node and the second node communicate on the reserved resources.

In a possible implementation, the indication information also includes a preset value, and 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.

In one possible implementation, the transmission resource is a shared resource, and the indication information also includes a preset maximum number of times N that the transmission resource is continuously occupied, where N is an integer greater than 0; the second node communicates with the first node on the shared resource N times consecutively. Node communication.

The device 1400 can be used to perform the actions performed by the first node in the above method embodiment. Specifically, the transceiver unit 1410 is used to perform transceiver-related operations on the first node side in the above method embodiment. The processing unit 1420 uses Perform operations related to processing on the first node side in the above method embodiment.

The device 1400 can implement steps or processes corresponding to the first node side execution in the method embodiments according to the embodiments of the present application. The device 1400 can include steps for executing the first node side in Figures 7, 10 and 11. The unit of execution of the method. Moreover, each unit in the device 1400 and the above-mentioned other operations and/or functions are respectively intended to implement the corresponding processes of the method embodiments 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 device 1400 and the above-mentioned other operations and/or functions are respectively intended to implement the corresponding processes of the method embodiment on the first node side in Figure 7 .

Specifically, 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 first indication information to 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. Each second transmission resource includes transmission resources in the first direction and transmission in the second direction. Resource; the processing unit 1420 is also configured to communicate with the second node on at least one second transmission resource through the transceiver unit 1410.

In a possible implementation, the second indication information includes one or more of transmission start time, time granularity, preset time interval, number of transmissions, and transmission end time.

In a possible implementation, 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 within the first transmission resource. The second transmission resource, the pattern is predefined.

In one possible implementation manner, the first transmission resource is a transmission resource in a connection event or a connection sub-event.

In a possible implementation manner, the first transmission resource includes transmission resources in the first direction, 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 device 1400 and the above-mentioned other operations and/or functions are respectively intended to implement the corresponding processes of the method embodiment on the first node side in Figure 10 .

Among them, the processing unit 1420 is used to send the first data packet to the second node through the transceiver unit 1410; the transceiver unit 1410 is also used to receive the second data packet sent by the second node, the second data packet includes indication information, and the first indication The information is used to indicate whether there is information to be transmitted and the type of information to be transmitted.

In one possible implementation, the type of information to be transmitted is control information or data information.

In one possible implementation, the indication information indicates that there is information to be transmitted, and the processing unit 1420 is further configured to: send the 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 information to be transmitted sent by the second node through the transceiver unit 1410.

In a possible implementation, 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 the type of 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 device 1400 and the above-mentioned other operations and/or functions are respectively intended to implement the corresponding processes of the method embodiment on the first node side in Figure 11.

Specifically, the transceiver unit 1410 is configured to send indication information to the second node. 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.

In one possible implementation, the indication information indicates that the transmission resources are reserved resources of the target node, and the processing unit 1420 is configured to communicate with the second node on the reserved transmission resources through the transceiver unit 1410.

In a possible implementation, the indication information also includes a preset value.

In a possible implementation manner, the indication information also includes a preset maximum number of times that the transmission resource is continuously occupied N, where N is an integer greater than 0.

It should be understood that the above-mentioned transceiver unit can be designed in an integrated manner, that is, it includes both receiving and transmitting functions, or it can be designed separately, that is, it can be replaced by a receiving unit with a receiving function and a transmitting unit with a transmitting function.

It should be understood that the specific process of each unit performing the above corresponding steps has been described in detail in the above method embodiments, and will not be described again for the sake of brevity.

The processing unit in Figure 14 may be implemented by at least one processor or processor-related circuitry. The transceiver unit can be implemented by a transceiver or a transceiver-related circuit. The storage unit may be implemented by at least one memory.

As shown in Figure 15, an embodiment of the present application also provides a communication device 1500. The apparatus 1500 includes a transceiver 1510 and may also include a processor 1520 coupled to a memory 1530 . Transceiver 1530 is used for reception and/or transmission of signals. For example, the processor 1520 is used to control the transceiver 1510 to receive and/or transmit 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. Specifically, the processor 1520 may be a central processing unit (CPU), a network processor (NP), or a combination of CPU and NP. The processor 1520 may further include a hardware chip. The above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The above-mentioned PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL) or any combination thereof.

Optionally, the device 1500 includes one or more processors 1520 .

Optionally, as shown in Figure 15, the device 1500 may also include a memory 1530.

Optionally, the device 1500 may include one or more memories 1530 .

Optionally, the memory 1530 can be integrated with the processor 1520 or provided separately.

As a solution, the device 1500 is used to implement the operations performed by the second node in the above method embodiment.

As a solution, the device 1500 is used to implement the operations performed by the first node in the above method embodiment. Embodiments of the present application also provide a communication device. The device includes: a memory for storing programs; a processor for executing the program stored in the memory. When the program stored in the memory is executed, the processor is configured to execute the above method embodiments. Method executed by the first node or the second node.

Embodiments of the present application also provide a computer-readable storage medium, which includes: the computer-readable medium stores a computer program; when the computer program is executed by one or more processors, it causes a device including the processor to execute the method described in the above embodiment. The method executed by the first node or the second node.

An embodiment of the present application also provides a chip. The chip includes a processor and a data interface. The processor reads instructions stored in the memory through the data interface to execute the method executed by the first node or the second node in the above method embodiment. .

An embodiment of the present application also provides a terminal, which includes any of the devices in FIG. 14 and FIG. 15 . The terminal may be a vehicle, including a vehicle with intelligent driving and assisted driving technologies.

The terms "component", "module", "system", etc. used in this specification are used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process, a processor, an object, an executable file, a thread of execution, a program and/or a computer running on a processor. Through the illustrations, both applications running on the computing device and the computing device may be components. One or more components can reside in a process and/or thread of execution and a component can be localized on one computer and/or distributed between 2 or more computers. Additionally, 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 data packets (eg, data from two components interacting with another component, a local system, a distributed system, and/or a network, such as the Internet, which interacts with other systems via signals) Communicate through local and/or remote processes.

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present application can be embodied in the form of software products in essence or in part that contribute to the technical solutions. The computer software products are stored in a storage medium and include several The instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code. .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (39)

A communication method, characterized by including: Receive first indication information from the first node, the first indication information being used to determine the first transmission resource; Receive second indication information from 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, each of the second transmission resources The resources include transmission resources in the first direction and transmission resources in the second direction; Communicating with the first node via the at least one second transmission resource. The method of claim 1, wherein the second indication information includes one or more of transmission start time, time granularity, preset time interval, number of transmissions, and transmission end time. The method according to claim 1 or 2, characterized in that the second indication information is used to activate the plurality of second transmission resources; The plurality of second transmission resources are determined according to the second indication information and a pattern of the plurality of second transmission resources within the first transmission resource, where the pattern is predefined. The method according to any one of claims 1 to 3, characterized in that the first transmission resource is a transmission resource in a connection event or a connection sub-event. The method according to any one of claims 1 to 4, characterized in that the first transmission resource includes a transmission resource in a first direction, a transmission resource in a second direction, or a transmission resource in the first direction and a second direction. Two-way transmission resources. A communication method, executed by the second node, is characterized by including: Receive the first data packet sent by the first node; Based on the reception of the first data packet, a second data packet is sent to the first node, the second data packet includes indication information, the indication information is used to indicate whether the second node has information to be transmitted and The type of information to be transmitted. The method of claim 6, wherein the type of information to be transmitted is control information or data information. The method of claim 6 or 7, wherein the indication information indicates that there is information to be transmitted, and the method further includes: 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 located within a connection event; Based on the reception of the third data packet, the information to be transmitted is sent to the first node. The method according to any one of claims 6 to 8, characterized in that 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 The field is used to indicate the type of information to be transmitted, or, The indication information includes one field. A communication method, executed by the first node, is characterized by including: Send first indication information to the second node, where the first indication information is used to determine the first transmission resource; Send second indication information to the second 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, each of the first transmission resources The second transmission resource includes transmission resources in the first direction and transmission resources in the second direction; Communicating with the second node via the at least one second transmission resource. The method of claim 10, wherein the second indication information includes one or more of transmission start time, time granularity, preset time interval, number of transmissions, and transmission end time. The method according to claim 10 or 11, characterized in that the second indication information is used to activate the plurality of second transmission resources; The plurality of second transmission resources are determined according to the second indication information and a pattern of the plurality of second transmission resources within the first transmission resource, where the pattern is predefined. The method according to any one of claims 10 to 12, characterized in that the first transmission resource is a transmission resource in a connection event or a connection sub-event. The method according to any one of claims 10 to 13, characterized in that the first transmission resource includes a transmission resource in a first direction, a transmission resource in a second direction, or a transmission resource in the first direction and a second direction. Two-way transmission resources. A communication method, executed by the first node, is characterized by including: Send the first data packet to the second node; Receive a second data packet sent by the second node, 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. The method of claim 15, wherein the type of information to be transmitted is control information or data information. The method of claim 15 or 16, wherein the indication information indicates that there is information to be transmitted, and the method further includes: Send a third data packet to the second node, where the first data packet, the second data packet and the third data packet are located within a connection event; Receive the information to be transmitted sent by the second node. The method according to any one of claims 15 to 17, characterized in that 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 The field is used to indicate the type of information to be transmitted, or, The indication information includes one field. A communication device, characterized by comprising: a transceiver unit and a processing unit, wherein The transceiver unit is configured to receive first indication information from the first node, and the first indication information is used to determine the first transmission resource; The transceiver unit is further configured to receive second indication information from the first node, the second indication information is used to determine a plurality of second transmission resources, and the plurality of second transmission resources are included in the first transmission resource, Each of the second transmission resources includes transmission resources in the first direction and transmission resources in the second direction; The processing unit is configured to communicate with the first node on the 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 device of claim 19, wherein the second indication information includes one or more of transmission start time, time granularity, preset time interval, number of transmissions, and transmission end time. The device according to claim 19 or 20, wherein the second indication information is used to determine the plurality of second transmission resources, and the processing unit is further used to: The plurality of second transmission resources are determined according to the second indication information and a plurality of preset patterns of the plurality of second transmission resources within the first transmission resource, and the patterns are predefined. The apparatus according to any one of claims 19 to 21, wherein the first transmission resource is a transmission resource in a connection event or a connection sub-event. The device according to any one of claims 19 to 22, wherein the first transmission resource includes a transmission resource in a first direction, a transmission resource in a second direction, or a transmission resource in the first direction and a second direction. Two-way transmission resources. A communication device, arranged on the second node side, characterized in that it includes: a transceiver unit and a processing unit, the transceiver unit being used to receive the first data packet sent by the first node; The processing unit is configured to send a second data packet to the first node through the transceiver unit based on the reception of the first data packet. The second data packet includes indication information, and the indication information is used to Indicates whether the second node has information to be transmitted and the type of the information to be transmitted. The device of claim 24, wherein the type of information to be transmitted is control information or data information. The device according to claim 24 or 25, characterized in that the indication information indicates that there is information to be transmitted, and the transceiver unit is also used 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 located within a connection event; The processing unit is further configured to, based on the reception of the third data packet, send the information to be transmitted to the first node through the transceiver unit. The device according to any one of claims 24 to 26, wherein the third 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 The second field is used to indicate the type of information to be transmitted, or, The indication information includes one field. A communication device, located on the first node side, characterized in that it includes: a transceiver unit and a processing unit; The processing unit is configured to send first indication information to the second node through the transceiver unit, where the first indication information is used to determine the first transmission resource; The processing unit is further configured to send second indication information to the second node through the transceiver unit, where the second indication information is used to determine a plurality of second transmission resources, where the plurality of second transmission resources include For the first transmission resources, each of the second transmission resources includes transmission resources in the first direction and transmission resources in the second direction; The processing unit is also configured to communicate with the second node on the at least one second transmission resource through the transceiver unit. The device of claim 28, wherein the second indication information includes one or more of transmission start time, time granularity, preset time interval, number of transmissions, and transmission end time. The device of claim 28 or 29, wherein the second indication information is used to determine the plurality of second transmission resources, and the processing unit is further used to: The plurality of second transmission resources are determined according to the second indication information and a plurality of preset patterns of the plurality of second transmission resources within the first transmission resource, and the patterns are predefined. The apparatus according to any one of claims 29 to 30, wherein the first transmission resource is a transmission resource in a connection event or a connection sub-event. The device according to any one of claims 29 to 31, wherein the first transmission resource includes a transmission resource in a first direction, a transmission resource in a second direction, or a transmission resource in the first direction and a second direction. Two-way transmission resources. A communication device, located on the first node side, characterized in that it includes: a processing unit and a transceiver unit, The processing unit is configured to send the first data packet to the second node through the transceiver unit; The transceiver unit is also configured to receive a second data packet sent by the second node. 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 The type of information to be transferred. The device of claim 33, wherein the type of information to be transmitted is control information or data information. The device of claim 33 or 34, wherein the third indication information indicates that there is information to be transmitted, and the processing unit is further configured to: Send a third data packet to the second node through the transceiver unit, where the first data packet, the second data packet and the third data packet are located within a connection event; The transceiver unit is also configured to receive the information to be transmitted sent by the second node. The device according to any one of claims 33 to 35, wherein 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 The field is used to indicate the type of information to be transmitted, or, The indication information includes one field. A computer-readable storage medium, characterized in that it includes: the computer-readable medium stores a computer program; when the computer program is executed by one or more processors, it causes a device including the processor to execute the following steps: The method according to any one of claims 1 to 5, 6 to 9, 10 to 14 or 15 to 18. A chip, characterized in that the chip includes a processor and a communication interface, and the processor reads instructions through the communication interface to execute claims 1 to 5, 6 to 9, 10 to 14 or 15 to The method described in any one of 18. A terminal including the communication device according to any one of claims 19 to 23, 24 to 27, 28 to 32, or 33 to 36.