CN117597968A

CN117597968A - Communication method and device

Info

Publication number: CN117597968A
Application number: CN202180100071.7A
Authority: CN
Inventors: 刘航; 王键
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2024-02-23
Also published as: WO2023279359A1

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 method and device

Technical Field

The embodiment of the application relates to the technical field of communication, and more particularly relates to a communication method and device.

Background

Short-range communication plays an important role in daily life of people, and is required in the fields of intelligent terminals, intelligent home, intelligent manufacturing, intelligent automobiles and the like. Bluetooth, for example, is one of the most common short-range communication modes, and particularly, the low-power (bluetooth low energy, BLE) version of bluetooth has been widely used in connection with mice, keyboards, wearable devices, true wireless stereo (true wireless stereo, TWS) headphones, and the like, due to its low-power, low-cost nature.

However, short-range communication has weak concurrency, for example, when a new task arrives or a service characteristic (such as a service arrival period) changes, a transmission requirement of burst information (including more control information) may be generated. Generally, the control information has higher priority, and the transmission of burst information may occupy transmission resources configured for service transmission, which affects normal transmission of the service. Therefore, a method is needed to realize burst information transmission and improve the efficiency of service transmission.

Disclosure of Invention

The embodiment of the application provides a communication method and a communication device, which can realize burst information transmission and improve service transmission efficiency.

In a first aspect, a communication method is provided, including: 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, and each second transmission resource comprises transmission resources in a first direction and transmission resources in a second direction; the second node communicates with the first node over at least one second transmission resource.

According to the communication method, the initially configured limited transmission resources are split into the plurality of transmission resources in the first direction and the second direction, and although the width of each split transmission resource in the time domain is reduced, the transmission of burst information with smaller single transmission data volume can still be met, and meanwhile, the plurality of split transmission resources can also meet the requirement of multiple transmission of the burst information. The burst information here includes a large amount of control information generated due to a change in service characteristics or the arrival of new service.

With reference to the first aspect, in certain implementations of the first aspect, the second indication information includes one or more of a transmission start time, a time granularity, a preset time interval, a number of transmissions, and a transmission end time.

According to the communication method, the fission of the transmission resources is controllable, and the transmission resources after the fission are determined by one or more of parameters such as transmission start time, time granularity, preset time interval, transmission times, transmission end time and the like, and can be set according to actual requirements.

With reference to the first aspect, in certain implementations of the first aspect, the second indication information is used to activate a plurality of second transmission resources; the second node determines a plurality of second transmission resources according to the second indication information and a pattern of the plurality of second transmission resources within the first transmission resources, wherein the pattern is predefined.

In the communication method according to the embodiment of the present invention, the second indication information may be used to activate a plurality of 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 second indication information may include a tag (or an index) of the pattern, and corresponds to a specific preset pattern, and indicates that the first transmission resource is split into a plurality of second transmission resources of the preset pattern, where the second indication information does not need to include specific information such as a transmission start time, a time granularity, a preset time interval, a transmission number, a transmission end time, and the like.

With reference to 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.

With reference to the first aspect, in some implementations of the first aspect, the first transmission resources include transmission resources of a first direction, or transmission resources of a second direction, or transmission resources of the first direction and transmission resources of the second direction.

The first transmission resources for fission may include transmission resources in the first direction and transmission resources in the second direction, may include transmission resources in the first direction only or transmission resources in the second direction only, and may be set according to the specific situation and requirements.

Because the control information is generally small in data quantity of single transmission, but needs to be transmitted and interacted for multiple times, the communication method of the embodiment of the application can greatly improve the transmission efficiency of the control information, so that the interaction of the control information required by new service or service characteristic change can be more efficiently completed, and the service transmission efficiency is improved.

In a second aspect, there is provided a method of communication, the method performed by a second node, comprising: the second node receives a first data packet sent by the first node; the second node transmits a second data packet to the first node based on the reception of the first data packet, wherein the second data packet includes indication information for indicating whether the second node has information to be transmitted and a type of the information to be transmitted.

A communication domain comprises a master communication node (which may be referred to as master node) and at least one slave communication node (which may be referred to as slave node). Wherein the master node manages time-frequency resources of the communication domain and has a function of scheduling resources for communication links between communication nodes in the communication domain. The method of the second aspect may be performed by a slave node, where the first node is used as a master node, and indication information is added in a data packet sent by the slave node to the master node, where the indication information indicates a type of information to be transmitted, and importance degrees of different types are different, and the master node can determine whether to transmit the information to be transmitted with the slave node according to the importance degrees of the types after knowing the type of the information to be transmitted, where the importance degrees of the types of the information to be transmitted are preset, and if the importance degrees of the types of the information to be transmitted are important, for example, the types of the information to be transmitted are burst information, the master node needs to continue to interact with the slave node for transmitting information, so that the slave node cannot transmit the important burst information due to lack of initiative.

With reference to the second aspect, in certain implementations of the second aspect, the type of information to be transmitted is control information or data information.

The importance degree of the type of the information to be transmitted may be agreed in advance, for example, burst information such as control information or some data information may be agreed as important, and other data information may be agreed as unimportant.

With reference to the second aspect, in certain 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 in a connection event, wherein the first data packet, the second data packet and the third data packet are in a connection event; the information to be transmitted is sent to the first node.

When the second node indicates that the information to be transmitted is important information and the type of the information to be transmitted is represented as important information, the first node continuously interacts with the second node in one connection event, so that the second node can complete the transmission of the information to be transmitted in one connection event, the next connection interval is not required to be waited, and the communication quality is ensured.

With reference to the second aspect, in certain 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 a type of information to be transmitted, or the indication information includes a field.

In the communication method of the embodiment of the present application, the indication information may include only one field, where the one field has 2 bits and is used to describe whether there is information to be transmitted and a type of the information to be transmitted respectively; or the indication information may include a first field and a second field, the first field and the second field having 1 bit, respectively, wherein the first field is used for indicating whether there is information to be transmitted, and the second field is used for indicating a type of the information to be transmitted. Therefore, the indication information only occupies 2 bits, does not occupy excessive resources and does not influence the transmission of the original data.

In a third aspect, a communication method is provided, including: the second node receives indication information from the first node, wherein the indication information is used for indicating transmission resources, and the transmission resources are reserved resources or shared resources; the second node determines transmission resources according to the indication information.

According to the communication method of the third aspect, the first node is used as a master node, the second node is used as a slave node, the master node configures additional transmission resources for the slave node, and when the additional transmission resources are reserved resources, data transmission of the slave node can be guaranteed, and transmission quality degradation caused by occupation of other slave nodes is avoided. When the additional transmission resource is a shared resource, on one hand, the transmission quality of the slave node with important information to be transmitted can be ensured, and on the other hand, the slave node can be prevented from occupying the transmission resources of other slave nodes for the transmission of the information of the preset information type, so that the overall communication quality is ensured. The importance of the type of information may be agreed in advance, burst information such as control information or some data information may be agreed to be important, and other data information may be agreed to be unimportant.

With reference to the third aspect, in some implementations of the third aspect, the indication information indicates that the transmission resource is a reserved resource of the target node, and when the second node is the target node, the first node communicates with the second node on the reserved transmission resource.

As described above, the second node is a target node, the transmission resource is a reserved resource, that is, a dedicated resource of the second node, where the second node communicates with the first node on the transmission resource, and other slave nodes cannot occupy the transmission resource, so that the information transmission quality of the second node can be ensured.

With reference to the third aspect, in some implementations of the third aspect, the indication information further 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 meet the first relation, the second node and the second node communicate on the third transmission resource.

For the slave node, after the dedicated transmission resource allocated by the master node is used up, if there is data to be transmitted, the shared resource can be used for transmission, but since the shared resource is limited, it cannot be satisfied that all the slave nodes are used at the same time, so the communication method in the embodiment of the present application further sets the above condition for the slave node to use the shared resource.

With reference to the third aspect, in some implementations of the third aspect, the indication information further 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 may communicate with the first node on the third transmission resource up to N consecutive times.

The shared resource may be a semi-static resource, meaning that multiple shared resources may be configured within one connection event, and the second node may occupy the shared resource multiple times in succession if the conditions for using the shared resource are met.

In a fourth aspect, a communication method is provided, including: the first node sends first indication information and second indication information to the second 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, and each second transmission resource comprises transmission resources in a first direction and transmission resources in a second direction; the first node communicates with the second node over at least one second transmission resource.

With reference to the fourth aspect, in some implementations of the fourth aspect, the second indication information includes one or more of a transmission start time, a time granularity, a preset time interval, a number of transmissions, and a transmission end time.

With reference to 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 according to the second indication information and a plurality of preset patterns of the plurality of second transmission resources in the first transmission resources, wherein the patterns are predefined.

With reference to 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.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first transmission resources include transmission resources of a first direction, or transmission resources of a second direction, or transmission resources of the first direction and transmission resources of the second direction.

In a fifth aspect, a communication method is provided, performed by a first node, comprising: the first node sends a first data packet to the second node; the first node receives a second data packet sent by the second node, wherein the second data packet comprises indication information, and the first indication information is used for indicating whether the second node has information to be transmitted and the type of the information to be transmitted.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the type of information to be transmitted is control information or data information.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the indication information indicates that there is information to be transmitted, and the method further includes: transmitting a third data packet to the second node in a connection event, the first data packet, the second data packet and the third data packet being in a connection event; and receiving information to be transmitted sent by the second node.

With reference to the fifth aspect, in certain implementations of the fifth 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 a type of information to be transmitted, or the indication information includes a field.

In a sixth aspect, a communication method is provided, including: the first node sends indication information to the second node, wherein the indication information is used for indicating transmission resources, and the transmission resources are reserved resources or shared resources.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the indication information indicates that the transmission resource is a reserved resource of the target node, on which the first node communicates with the second node.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the indication information further includes a preset value.

With reference to the sixth aspect, in some implementations of the sixth aspect, the indication information further 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, there is provided a communication apparatus comprising: the system comprises a receiving and transmitting unit and a processing unit, wherein the receiving and transmitting unit is used for receiving first indication information sent by a first node, and the first indication information is used for determining first transmission resources; the receiving-transmitting unit is further configured to receive second indication information sent by the first node, where the second indication information is used to determine a plurality of second transmission resources, where the plurality of second transmission resources are included in the first transmission resource, and each second transmission resource includes a transmission resource in a first direction and a transmission resource in a second direction; and the processing unit is used for communicating with the first node through the transceiving unit on at least one second transmission resource in the plurality of second transmission resources obtained according to the second indication information.

With reference to the seventh aspect, in certain implementations of the seventh aspect, the second indication information includes one or more of a transmission start time, a time granularity, a preset time interval, a number of transmissions, and a transmission end time.

With reference to the seventh aspect, in certain 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: and determining a plurality of second transmission resources according to the second indication information and a plurality of preset patterns of the plurality of second transmission resources in the first transmission resources, wherein the patterns are predefined.

With reference to 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.

With reference to the seventh aspect, in some implementations of the seventh aspect, the first transmission resources include transmission resources of a first direction, or transmission resources of a second direction, or transmission resources of the first direction and transmission resources of the second direction.

An eighth aspect provides a communication apparatus provided on a second node side, comprising: the receiving and transmitting unit is used for receiving a first data packet sent by the first node; the processing unit is used for transmitting a second data packet to the first node through the receiving and transmitting unit based on the receiving of the first data packet, wherein the second data packet comprises indication information, and the indication information is used for indicating whether the second node has information to be transmitted and the type of the information to be transmitted.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the type of information to be transmitted is control information or data information.

With reference to the eighth aspect, in certain implementation manners of the eighth aspect, the indication information indicates that there is information to be transmitted, and the processing unit is further configured to receive, through the transceiver unit, a third data packet sent by the first node, where the first data packet, the second data packet, and the third data packet are in a connection event; the processing unit is further configured to send information to be transmitted to the first node through the transceiver unit based on the reception of the third data packet.

With reference to the eighth aspect, in certain implementations of the eighth 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 a type of information to be transmitted, or the indication information includes a field.

A ninth aspect provides a communication apparatus, located on a first node side, comprising: the receiving and transmitting unit is used for receiving indication information, the indication information is used for indicating transmission resources, and the transmission resources are reserved resources or shared resources; and the processing unit is used for determining transmission resources according to the first indication information.

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

With reference to the ninth aspect, in certain implementation manners of the ninth aspect, the indication information further includes a preset value, and the method further includes: generating a first random number; when the first random number and the preset value meet the first relation, the second node and the second node communicate on the transmission resource.

With reference to the ninth aspect, in some implementations of the ninth aspect, the indication information further 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 may communicate with the first node on the transmission resource up to N consecutive times.

In a tenth aspect, there is provided a communication apparatus comprising: the processing unit is used for sending first indication information to the second node through the transceiving unit, and the first indication information is used for determining first transmission resources; 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 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 is further configured to communicate with the second node over at least one second transmission resource via the transceiving unit.

With reference to the tenth aspect, in certain implementations of the tenth aspect, the second indication information includes one or more of a transmission start time, a time granularity, a preset time interval, a number of transmissions, and a transmission end time.

With reference to the tenth aspect, in certain 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: and determining a plurality of second transmission resources according to the second indication information and a plurality of preset patterns of the plurality of second transmission resources in the first transmission resources, wherein the patterns are predefined.

With reference to 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.

With reference to the tenth aspect, in some implementations of the tenth aspect, the first transmission resources include transmission resources of a first direction, or transmission resources of a second direction, or transmission resources of the first direction and transmission resources of the second direction.

An eleventh aspect provides a communication apparatus provided on a first node side, comprising: the processing unit is used for sending the first data packet to the second node through the receiving and transmitting unit; the receiving and transmitting unit is further configured to receive a second data packet sent by the second node, where the second data packet includes indication information, and the first indication information is used to indicate whether the second node has information to be transmitted and a type of the information to be transmitted.

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

With reference to the eleventh aspect, in certain implementation manners 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, where the first data packet, the second data packet, and the third data packet are in a connection event; the receiving and transmitting unit is also used for receiving the information to be transmitted sent by the second node.

With reference to the eleventh aspect, in certain implementations of the eleventh 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 a type of information to be transmitted, or the indication information includes a field.

In a twelfth aspect, there is provided a communication apparatus comprising: a memory for storing a program; a processor for executing a memory-stored program, the processor being configured to perform the method provided by any one of the implementations of the first to sixth aspects described above when the memory-stored program is executed.

In a thirteenth aspect, there is provided a computer-readable storage medium, comprising: the computer readable medium stores a computer program; the computer program, when executed by one or more processors, causes an apparatus comprising the processor to perform the method of any of the implementation aspects of the first to sixth aspects described above.

In a fourteenth aspect, a chip is provided, wherein the chip includes a processor and a data interface, and the processor reads instructions stored on a memory through the data interface to perform the method of any implementation manner of the first aspect to the sixth aspect.

A fifteenth aspect provides a terminal comprising an apparatus according to any one of the seventh to eleventh aspects. The terminal may be a vehicle.

Drawings

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

fig. 2 is a schematic diagram of resources being preempted when performing data transmission according to an embodiment of the present application;

FIG. 3 is a schematic diagram of signaling for short-range communication according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a timeline of a short-range communication provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a timeline of another short-range communication provided by an embodiment of the present application;

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

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

fig. 8 is a schematic diagram of determining a first transmission resource as a second transmission resource according to second indication information provided in an embodiment of the present application;

fig. 9 is a schematic diagram of data transmission in a connection interval according to an embodiment of the present application;

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

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

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

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

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

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

Detailed Description

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 application can be applied to a scene with signal transmission, in which signals are transmitted between two communication ends, one end for transmitting the signals is a signal transmitting end, one end for receiving the signals is a signal receiving end, and the signal transmitting end and the signal receiving end can dynamically change. For example, at a first time, the communication terminal a transmits a signal as a signal transmitting terminal, and at a second time, the communication terminal a receives a signal as a signal receiving terminal. And the communication terminal can be a signal sending terminal and a signal receiving terminal at the same time, and can communicate with different communication terminals.

The communication method provided by the embodiment of the application can be applied to wireless communication scenes, such as a short-range wireless communication scene, a wide-area wireless communication scene or a local wireless communication scene, and the like. In a wireless communication scenario, a plurality of communication domains may be included within a certain communication area or range. The communication domain may refer to a set of communication nodes having communication relationships, and a system of communication connection relationships (i.e., communication links) between the communication nodes. A communication domain may comprise a master communication node (which may be referred to as master node) and at least one slave communication node (which may be referred to as slave node). Wherein the master node manages time-frequency resources of the communication domain and has a function of scheduling resources for communication links between communication nodes in the communication domain. Exemplary, fig. 1 shows a schematic diagram of a wireless communication scenario provided in an embodiment of the present application. In the 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 fig. 1, a master node 1 and a master node 2 are included in the wireless communication scenario. The master node 1 and the slave nodes 1 and 2 constitute a communication domain 1, and the master node 1 communicates with the slave nodes 1 and 2. The master node 2 and the slave nodes 3 and 4 constitute a communication domain 2, and the master node 2 communicates with the slave nodes 3 and 4.

In an example case, when the wireless communication scenario shown in fig. 1 is a wide area wireless communication scenario, the master node 1 and the master node 2 may be network devices, and the slave nodes 1 to 4 may be terminal devices. The network device may be a device with a radio transceiver function or a chip that may be disposed on the network device, and the network device may be, for example, a Radio Access Network (RAN) device in a wireless network of a certain communication system, or referred to as a base station, including but not limited to: next generation Node bs (generation Node B, gNB), radio network controllers (radio network controller, RNC), node bs (Node B, NB), base station controllers (base station controller, BSC), base transceiver stations (base transceiver station, BTS), home base stations (e.g., home evolved NodeB, or home Node B, HNB), base Band Units (BBU), access Points (APs) in wireless fidelity (wireless fidelity, wi-Fi) systems, wireless relay nodes, wireless backhaul nodes, transmission points (transmission and reception point, TRP or transmission point, TP), and the like.

In some deployments, the RAN device may include a Centralized Unit (CU) and a Distributed Unit (DU). The RAN device may also include a Radio Unit (RU). The CU implements part of the functions of the RAN apparatus, the DU implements part of the functions of the RAN apparatus, for example, the CU implements functions of a radio resource control (radio resource control, RRC), a packet data convergence layer protocol (packet data convergence protocol, PDCP) layer, and the DU implements functions of a radio link control (radio link control, RLC), a medium access control (media access control, MAC), and a Physical (PHY) layer. Under this architecture, higher layer signaling, such as RRC layer signaling or PDCP layer signaling, may also be considered to be transmitted by a DU or by a du+ru, since the information of the RRC layer eventually becomes information of the PHY layer or is converted from the information of the PHY layer. It is understood that the network device may be a CU node, or a DU node, or a device comprising a CU node and a DU node. In addition, the CU may be divided into network devices in the RAN, or may be divided into network devices in a Core Network (CN), which is not limited.

A terminal device can also be called a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. 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 transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart wearable device (smart glasses, smart watches, smart headphones, etc.), a wireless terminal in smart home (smart home), or the like, or may be a chip or a chip module (or chip system) that can be set in the above device. The embodiments of the present application are not limited to application scenarios. In the embodiment of the application, the terminal device having the wireless transceiving function and the chip capable of being arranged on the terminal device are collectively called as a terminal device.

In another example case, when the wireless communication scenario shown in fig. 1 is a local wireless communication scenario, the master node 1 and the master node 2 may be Access Points (APs), and the slave nodes 1 to 4 may be stations.

In the case of still another example, when the wireless communication scenario shown in fig. 1 is a short-range wireless communication scenario, examples of different short-range wireless communication scenario master nodes and slave nodes are different. For example, when the short-range wireless communication scene is an in-vehicle wireless communication scene, the master node 1 and the master node 2 may be cabin domain controllers (cockpit domain controller, CDC), and the slave nodes 1 to 4 may be in-vehicle musical horns, in-vehicle atmosphere lamps, or the like. For another example, when the short-range wireless communication scene is an intelligent wearable wireless communication scene, the master node 1 and the master node 2 may be mobile phones, and the slave nodes 1 to 4 may be headphones, watches, or the like. For another example, when the short-range wireless communication scenario is a home wireless communication scenario, the master node 1 and the master node 2 may be home wireless gateways, and the slave nodes 1 to 4 may be home electric appliances or the like. For another example, when the short-range wireless communication scene is an industrial short-range wireless communication scene, the master node 1 and the master node 2 may be industrial wireless gateways, and the slave nodes 1 to 4 may be unmanned vehicles (automatic guided vehicle, AGVs), machine tools, robots, or the like.

Of course, the above listed examples of master and slave nodes are merely examples, and the present application is not limited thereto. It should be noted that, when the wireless communication scenario shown in fig. 1 is other wireless communication scenarios, the master node and the slave node may also be other possibilities, which are not listed here. Further, the master and slave roles may change dynamically, e.g., master and slave are interchanged, or the master becomes the slave of other devices and the slave becomes the master of other devices.

It should be noted that the number of the master node and the slave node shown in fig. 1 is merely an example, and more or fewer nodes may be included in the wireless communication scenario, which is not limited in this application.

A node in the embodiments of the present application may also be referred to as a communication node, an apparatus (device), a communication device (device), or the like.

Currently, the problem of weak multi-service concurrency capability exists in a wireless communication scene. For example, fig. 2 shows a schematic diagram of resources being preempted while data transmission is taking place. As shown in fig. 2, when the service characteristics do not change or no new service arrives, the original service (denoted as service 1) is normally transmitted on the configured transmission resources, when the new service (denoted as service 2) arrives or the characteristics of service 1 change, resources need to be allocated for service 2 or resources originally allocated for service 1 need to be adjusted, at this time, control information interaction is frequently performed between the slave node and the master node, that is, a transmission requirement of burst information is generated, for example, the slave node reports the characteristic information of service 2 to the master node, and the master node establishes a service logic channel according to the characteristic information of service 2.

Since, in general, the transmission resources allocated by the master node to a slave node are limited, and the burst information often needs to be interacted between the slave node and the master node for multiple times, as described above, the burst information includes the control information to be transmitted generated when a new service arrives or the original service characteristics change, and the priority of the control information transmission is higher than that of the service data transmission, so that the transmission resources of the data originally used for the service 1 are preempted by the control information, and the transmission efficiency of the data of the service 1 is greatly reduced. Although the amount of control information data for 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 that a plurality of opportunities for data transmission of service 1 are preempted by the control information, so that data of service 1 cannot be transmitted for a long time, and the service quality of service 1 is reduced or even interrupted.

In addition, if one master node is connected with a plurality of slave nodes at the same time, under the condition of insufficient transmission resources, if the master node performs multiple information transmission interactions with one of the slave nodes, transmission resources can not be obtained temporarily by other slave nodes, so that information of other slave nodes cannot be normally transmitted, the information transmission efficiency is reduced, and the service quality is reduced.

In the wireless communication scenario, when a new service arrives or the original service characteristics change, the problem that the current service transmission efficiency is low or the service transmission is interrupted may exist.

Therefore, the embodiment of the application provides a communication method, by splitting transmission resources into a plurality of resources in a first direction and resources in a second direction, thereby increasing the transmission opportunity of the second direction in the transmission resources between the communication nodes, further increasing the interaction times between the communication nodes, enabling the transmission of control information brought by new service transmission requirements or service characteristic change requirements and the like to be more efficiently scheduled, reducing the waiting time of the current service data transmission, and improving the transmission efficiency. In addition, because the control information is less relative to the content of the service data and the demand on resources is relatively low, the fissionable resources can also meet the transmission requirement of the control information, and the communication nodes can respond to the control information of the other party more quickly, so that the transmission efficiency of the control information can be improved while the transmission efficiency of the current service data is improved, and the transmission efficiency of the service with new service or changed characteristics is improved. Therefore, the communication method provided by the embodiment of the application can improve the quality of business service and the efficiency of information transmission, so that the problem of weak concurrency in a wireless communication scene is solved.

Taking short-range communication as an example, please refer to fig. 3 and fig. 4, which are a signaling diagram and a time axis diagram of short-range communication provided in the embodiment of the present application respectively. In fig. 4, t represents a time axis, M represents a master node, and S represents a slave node; M.fwdarw.S represents a data packet transmitted from the master node to the slave node, and S.fwdarw.M represents a data packet transmitted from the slave node to the master node. As shown in fig. 3 and 4, the first node and the second node may be initially in a standby state, in which the first node and the second node do not establish a connection with other devices, nor transmit and receive data. The first node may enter a scanning (scanning) state, which may be referred to as a scanner (scanner) or an observer (observer); the second node may enter a broadcast (advertisement) state, which may be referred to as a broadcaster (advertisement); the second node in the broadcast state may periodically transmit a broadcast signal, which may be referred to as a broadcast packet, and in one broadcast event (advertising event), the second node may transmit the same broadcast packet on different channels (e.g., the same broadcast packet on three channels), thereby increasing the probability of the first node scanning to the second node. After scanning to the second node, i.e. after receiving the broadcast packet sent by the second node, the first node may send a connection request (connection request) to the second node, where the first node is in an initiating state, which may be referred to as an initiator (initiator). The connection request includes a transmission window (transmit window) parameter for informing the second node that the data packet P1 will be sent to the second node during the transmission window. The second node opens a radio frequency window (Rx window) after transmitting the broadcast packet in order to receive information from the first node; after receiving the connection request in the Rx window, the second node receives the data packet P1 in the transmission window and replies the data packet P2.

The above broadcast packet, connection request, data packet P1, data packet P2, etc. may be different types of protocol data units (protocol data unit), for example, the broadcast packet is broadcast PDU (advertising PDU); the connection request is origination PDU (initiating PDU), and packets P1 and P2 are data physical channels PDU (data physical channel PDU).

The first node may transmit a connection request as an initiator on a main broadcast physical channel (primary advertising physical channel), and when the initiator transmits the connection request, a link layer of the initiator enters a connected state, in which the initiator (first node) acts as a master/central. When the second node receives a connection request as a broadcaster, the link layer of the broadcaster enters a connection state, and at this time, the broadcaster (second node) acts as a slave node (slave/peripheral).

Fig. 5 is a schematic time axis diagram of another short-range communication according to an embodiment of the present application. This differs from fig. 4 in that the initiator sends a connection request on the secondary broadcast physical channel (secondary adverting physical channel) and the broadcaster receives the connection request reply connection response. And after the initiator receives the connection response, the link layer of the initiator enters a connection state, and the initiator acts as a master/central node. After the broadcaster transmits the connection response, the link layer of the broadcaster enters a connection state, and the broadcaster acts as a slave (slave/peripheral).

As shown in fig. 4 and 5, after the broadcaster transmits a broadcast packet, a radio frequency window (Rx window) is opened after time T1 to receive a connection request from a scanning node. The connection request includes a transmission window (transmit window) parameter determination, and the transmission window parameter may include a transmission window offset (transmit window offset) and a transmission window size (transmit window size) for determining a location (determination T3) and a size (T4) of the transmission window, respectively. The position of the transmission window may furthermore take into account the transmission window delay T2, i.e. be determined from the transmission window delay T2 and the transmission window offset. The master node may then send the packet P1 during the transmission window, and the packet P1 may be located completely within the transmission window or may exceed the transmission window. Other parameters may also be included in the connection request, including for example a connection interval (connection interval, CI) parameter indicating the size of the connection interval. After entering a connection state, the master node and the slave node can interact once at the beginning of each connection interval, namely, the master node sends a data packet to the slave node, and the slave node sends a data packet to the master node, wherein the connection state can be called as a connection event (event); the connection interval may also be referred to as a transmission interval and the connection event may also be referred to as a transmission event. The interaction between the master node and the slave node can be carried out in the connection event, and the interval between the M-S data packet and the S-M data packet in one round of interaction is a time interval T5, wherein the time interval T5 is mainly used for carrying out receiving-transmitting conversion. After the data transmission is completed, the master node or the slave node starts receipt reception after the time interval T5; alternatively, the master node or the slave node starts data transmission after the lapse of the time interval T5 after completion of data reception. The time interval T5 may be agreed by a protocol, or may be determined by negotiation between the transceiver ends. The present application is not limited in this regard. This time interval T5 may also be referred to as an inter-frame interval (inter frame space, IFS) time, or an inter-packet interval (inter packet space, IPS) time, or a transition time interval. Other names are different but are within the scope of the present application as the time interval between reception and transmission. In addition, the time T1 is similar to the time interval T5, and may be the same or different, and will not be described herein.

Subsequently, the master node periodically transmits the data packet to the slave node with the connection interval as a period by taking the point of time when the reception of the data packet P1 starts as an anchor point (or origin). When there is no data to be transmitted between the master node and the slave node, 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 or not can be determined by the master node. When the master node determines to continue interaction, the master node may continue to send data packets to the slave node, and the slave node may receive the data packets sent by the master node and may send the data packets to the master node after the receiving-transmitting conversion. The length of time that the master node and the slave node occupy to transmit data is not fixed, depending on the size of the data packet, but is constrained by the maximum transmission time.

The communication nodes (such as the master node or the slave node) may not need to send or receive the service data, but the communication nodes still can interact with the data packet to maintain connection, and the interacted data packet is an empty packet.

A latency parameter may also be included in the connection request, which is used to indicate how many connection events the slave node may skip, i.e. the number of consecutive connection events (or connection intervals) the slave device may skip (or not listen to the master node). For example, if the delay parameter is set to N, the slave node may reply to the master node every N connection intervals, that is, the slave node may sleep during the previous N-1 connection intervals until the nth connection interval arrives, and reply to the node with a data packet, so that power consumption of the slave node may be greatly saved. And if the slave node has data to report to the master node, the data can be reported without waiting for the Nth connection interval, so that the power consumption is saved, and the real-time performance of data transmission is improved.

In addition, the connection request may further include at least one of the following parameters: the addresses of the initiator and broadcaster, e.g. MAC addresses, access addresses (link layer can distinguish the type of data packets from this address), cyclic redundancy check (cyclic redundancy error check, CRC) initial values, timeout (timeout) values (master and slave nodes can maintain a supervision timer that resets when a valid data packet is received and considers the link connection lost when the timer reaches the time indicated by the timeout value), channel map (indicating available and unavailable data channels), frequency hopping (hop) indicating hop increment in the data channel selection time hopping algorithm, sleep clock accuracy (sleep clock accuracy).

In daily life, there may be a need for multiple users to connect to the same device by bluetooth, for example, several friends want to enjoy music on the same smartphone at the same time by bluetooth headset. To better support this demand, the concept of isochronous connection data streams (connected isochronous stream, CIS) was introduced in short-range communications. CIS is a type of logical transport that can cause connected devices to transmit isochronous data in either direction (the other direction). The CIS supports variable size packets and transmits one or more packets during each isochronous event (isochronous event).

Please refer to fig. 6, which is a schematic diagram of a CIS connection event. The CIS event is the opportunity of 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 the CIS anchor points is the CIS event interval, and the CIS event interval can be determined according to interval (interval) parameters.

Each CIS event may include one or more connection sub-events (which may also be referred to as a transmission sub-event, simply referred to as a sub-event), and each sub-event is used by the master node to transmit a data packet to the slave node, where the data packet may follow a response from the slave node to the master node. The first sub-event of the CIS event (shown as sub-event 1) starts at the CIS anchor point and ends with a packet from the slave node, e.g., s→m packet in sub-event 1, and if the slave node does not send a packet, ends with a packet from the master node. The number of sub-events in the CIS event does not exceed a maximum number of sub-events, the maximum number being configured by a parameter. The interval between sub-events (simply referred to as sub-interval) may be configured by a parameter, which may be referred to as a sub-interval parameter, and indicates the time between 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-event.

Because the connection parameters may not be suitable for the current service requirements after the user interacts with the service requirements for a period of time in the connection state, in order to improve the service quality of the service, the connection parameters may be updated by using a connection parameter updating procedure, where the procedure involves a large amount of control signaling interaction between the master node and the slave node, resulting in a problem of low service transmission efficiency or service interruption. Therefore, the time which can be used for transmission in the event or sub-event is split into a plurality of transmission opportunities, so that the transmission opportunities among the communication nodes in the event or sub-event are increased, the interaction times among the communication nodes are increased, the transmission of control information caused by new service transmission requirements or service characteristic change requirements and the like can be more efficiently scheduled, the waiting time of the current service data transmission is reduced, and the transmission efficiency is improved.

Fig. 7 shows a schematic flow chart of a communication method provided in an embodiment of the present application. The method shown in fig. 7 can be applied to short-range communication scenes in the fields of intelligent terminals, intelligent homes, intelligent manufacturing, intelligent automobiles and the like, such as scenes including mice, keyboards, wearable devices, TWS headphones and the like. The method shown in fig. 7 includes steps 701 to 703, which are described below.

S701, a first node sends first indication information to a second node, and correspondingly, the second node receives the first indication information sent by the first node, wherein the first indication information is used for determining a first transmission resource.

The embodiment of the application fissions the transmission resources in the time domain so as to obtain more transmission opportunities in the time domain. The first transmission resource may thus be understood as a transmission resource in the time domain or from a time domain perspective.

Regarding the determination of resources in the frequency domain, the embodiment of the present application is not limited, and the master node may configure the frequency domain resources (dynamic configuration or semi-static configuration), or may implement the allocation of the frequency domain resources by using a frequency hopping technology. For example, in a short-range communication scenario, a frequency band is divided into a plurality of hopping channels (hop channels), and then a hopping sequence is used to implement a switching of the hopping channels to reduce interference. The method for determining the frequency hopping channels is not limited, and the number of the frequency hopping channels and the frequency of frequency hopping are not limited.

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 of a first direction, or may be a transmission resource of a second direction, or may include a transmission resource of the first direction and a transmission resource of the second direction. The transmission resources in the first direction refer to resources used for transmitting the data packet from the master node to the slave node, and the transmission resources in the second direction are resources used for transmitting the data packet from the slave node to the master node, that is, in the embodiment of the application, the available transmission resources in each direction can be cracked, or only the transmission resources in one direction can be cracked. 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, where the first indication information may directly indicate the first transmission resource or may indirectly indicate the first transmission resource.

For example, in short-range communication, the first indication information may include at least one parameter, where the at least one parameter is used to determine a transmission resource in a connection event or a connection sub-event, that is, determine a starting position and a size of the transmission resource, where the transmission resource is a transmission resource that may be used by a transmission node, not a transmission resource that is ultimately used, and whether to ultimately use the transmission resource or which resources of the transmission resource may be determined according to an actual service situation.

In one implementation, the first indication information includes a connection interval (connection interval) parameter that indicates a time between consecutive or adjacent connection events, the reference points of which may be anchor points. The second node determines a connection interval according to the connection interval parameter, takes the whole or a part of time domain resources in the connection interval as first transmission resources to carry out fission, and can determine the transceiving conversion time between resources in different directions after the fission according to a preset time interval during the fission, thereby determining the distribution of the resources after the fission in the time domain, wherein the transceiving conversion time before and after the fission can 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 in the connection interval are preset, for example, agreed by a protocol, at this time, the second node may determine, according to the connection interval parameter and the anchor point of the connection event, a start time of the event, where the start time is used as a start point of the resource R11; determining a resource R11 according to the size of the resource R11; and further, the position of the resource R12 is determined according to the transceiving conversion time before fission, and the resource R12 is further determined according to the size of the resource R12. The second node takes the resource R11, the resource R12, or the resource R11 and the resource R12 as a first transmission resource, or takes R11, the transceiving conversion time before fission and R12 as a first transmission resource to carry out fission, and the transceiving conversion time between the resources in different directions after the fission is determined according to a preset time interval during the fission, wherein the transceiving conversion time before and after the fission can be different. Alternatively, the sizes of the resources R11 and R12 are determined by parameters, which are referred to as a parameter PR11 and a parameter PR12, respectively, and the first indication information may further include the parameter PR11 and the parameter PR12. The sizes of the resource R11 and the resource R12 may be the same or different.

In yet another implementation, the first indication information includes a connection interval parameter, and the size of the resource R11 for transmission in the first direction and the resource R12 for transmission in the second direction within the connection interval is dynamically changed. The first node configures the maximum data packet size that can be transmitted through a maximum data packet parameter, which may be one parameter for configuring the maximum value of the m→s data packet and the maximum value of the s→m data packet, and the parameter may include two sub-parameters for configuring the maximum value of the m→s data packet and the maximum value of the s→m data packet, respectively. The second node may determine, according to the parameter, a time T11 for the master node to transmit the maximum m→s packet to the slave node and a time T12 for the slave node to transmit the maximum s→m packet to the master node, respectively. The second node takes the time domain resources corresponding to the time T11 and the time T12 as the first transmission resources to perform fission.

In another implementation, the first indication information includes a sub interval (sub interval) parameter for indicating a sub interval, which is a time between two consecutive or adjacent sub events. The second node may determine a start time of a sub-event according to the sub-interval parameter and an anchor point of the connection event, and take a whole or a part of time domain resources in the sub-interval as the first transmission resources to perform fission, and determine a post-fission transceiving conversion time according to a preset time interval during the fission, and determine distribution of the post-fission resources in the time domain, where the pre-fission and post-fission transceiving conversion times may be different.

In yet another implementation, the first indication information includes a subinterval parameter, and the size of the resource R21 for transmission in the first direction and the size of the resource R22 for transmission in the second direction within each subinterval are preset, for example, agreed by a protocol, and at this time, the second node may determine, according to the subinterval parameter and the anchor point of the connection event, a start time of one subevent, where the start time is used as a start point of the resource R21; determining a resource R21 according to the size of the resource R21; and further, the position of the resource R22 is determined according to the transceiving conversion time before fission, and the resource R22 is further determined according to the size of the resource R22. The second node takes the resource R21, the resource R22 or the resource R21 and the resource R22 as the first transmission resource to carry out fission, and the transceiving switching time between the resources in different directions after the fission is determined according to a preset time interval during the fission, wherein the transceiving switching time before and after the fission can be different. Alternatively, the sizes of the resource R21 and the resource R22 are determined by parameters, which are referred to as a parameter PR21 and a parameter PR22, respectively, and the first indication information may further include the parameter PR21 and the parameter PR22. The sizes of the resource R21 and the resource R22 may be the same or different.

In yet another implementation, the first indication information includes a sub-interval parameter, and the size of the resource R21 for transmission in the first direction and the resource R22 for transmission in the second direction within each sub-interval is dynamically varied. The first node configures the maximum data packet size that can be transmitted through a maximum data packet parameter, which may be one parameter for configuring the maximum value of the m→s data packet and the maximum value of the s→m data packet, and the parameter may include two sub-parameters for configuring the maximum value of the m→s data packet and the maximum value of the s→m data packet, respectively. The second node may determine, based on the parameter, a time T21 for the master node to transmit the maximum m→s packet to the slave node and a time T22 for the slave node to transmit the maximum s→m packet to the master node, respectively. The second node takes the time domain resources corresponding to the time T21 and the time T22 as the first transmission resources to perform fission.

S702, the first node sends second indication information to the second node, and correspondingly, the second node receives the second indication information sent by the first node, wherein 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, and each second transmission resource comprises transmission resources in a first direction and transmission resources in a second direction.

The transmission resources in the first direction are used for transmitting the data packet from the master node to the slave node, the transmission resources in the second direction are used for transmitting the data packet from the slave node to the master node, and the sequence of the transmission resources in the two directions is not limited.

The second indication information directly indicates the plurality of second transmission resources, or indirectly indicates the plurality of second transmission resources, and may include one or more parameters, which will be further described later. The transmission resources in the first direction and the transmission resources in the second direction in the second transmission resources may be continuous time domain resources or discontinuous transmission resources, and 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 this embodiment, the original available transmission resources are split into a plurality of transmission resources in different directions, and because the data size of the single transmission of the control information is smaller, the second transmission resources after the split can meet the single transmission requirement of the control information, and the plurality of second transmission resources can meet the transmission requirements of the first node and the second node for the plurality of times of first-direction and second-direction transmission requirements of the control information.

S703, the first node communicates with the second node via at least one second transmission resource.

The first node and the second node communicate on a second transmission resource, where the communication may include the first node sending a data packet to the second node over the transmission resource in the first direction and the second node sending a data packet to the first node over the transmission resource in the second direction, and the data packet carrying control information, or traffic data, or may be a null packet, and the information transmitted between the first node and the second node may be a protocol data unit (protocol data unit, PDU), e.g., a Link layer control (control) protocol data unit (protocol data unit, PDU), or a Link layer data PDU, or include 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 may use a part of the number of second transmission resources to transmit information, for example, when there is no excessive transmission number demand between the first node and the second node, information may be transmitted on only one second transmission resource, that is, only one transmission in the first direction (e.g., m→s) and one transmission in the second direction (e.g., s→m); when more transmission times are required between the first node and the second node, information transmission can be performed on a plurality of second transmission resources, even all the second transmission resources, so that the problem that the multiple interaction requirements of the first node and the second node on control information cannot be met can be solved.

The plurality of second transmission resources is determined by the second indication information. The second indication information may include one or more of the following parameters: transmission start time (or position), time granularity, preset time interval, number of transmissions, transmission end time (or position). The transmission start time (or position) is used to indicate the start time (or position) of the second transmission resources in the time domain, and may indicate the start time of only one of the second transmission resources, or may indicate the start times of a plurality of the second transmission resources; further, the start time thereof may be indicated for the transmission resources of the first direction and the transmission resources of the second direction, respectively, among the second transmission resources, or the start time of the transmission resources of only one direction may be indicated. The transmission end time (or position) is used to indicate the end time (or position) of the second transmission resources in the time domain, and may indicate only the end time of one of the second transmission resources, or may indicate the end times of a plurality of the second transmission resources; further, the end time may be indicated for the transmission resources of the first direction and the transmission resources of the second direction, respectively, among the second transmission resources, or may be indicated for the end time of the transmission resources of only one direction. The time granularity is used for indicating 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 of the second transmission resource and the transmission resource in the second direction in the time domain; the width of the plurality of second transmission resources in the time domain may be indicated by only one time granularity parameter, where the width of the plurality of second transmission resources in the time domain is uniform (same), or the width of the plurality of second transmission resources in the time domain is changed according to a preset rule (a preset linear relationship); alternatively, the width of each second transmission resource in the time domain may be indicated using a plurality of time granularity parameters. The preset time interval is an interval in the time domain between the transmission resource in the first direction of the second transmission resource and the transmission resource in the second direction, similar to the above switching time interval. The transmission times are used for indicating the transmission times of a plurality of second transmission resources in the first direction, the transmission times in the second direction or the transmission times in the first direction and the second direction, the transmission times are used for indicating fission, and are not real transmission times, and the real transmission times can be the same or different from the real transmission times, so the transmission times can be called as the number of resources or the number of fission and the like.

The second indication information may include one of the following parameters: transmission start time, time granularity, preset time interval, transmission times and transmission end time. For example, the second indication information includes a transmission number or time granularity, and since the transmission start time and the transmission end time may be the same as the transmission start time and the transmission end time of the first transmission resource, the preset time interval may be determined according to hardware conditions or may be preset (e.g., protocol-agreed), and when the first transmission resource is equally divided into a plurality of second transmission resources, the time granularity is uniform, and the time granularity and the transmission number may be mutually decided. Fig. 8 (a) illustrates a case where the second transmission resources are determined only by the number of transmissions, when the transmission start time, the preset time interval, and the transmission end time are all determined, if the number of transmissions is determined again, since the time granularity is uniform, the width of each of the transmission resources in the first direction and the transmission resources in the second direction in the time domain is the same, it can be determined how many transmission resources in the first direction and transmission resources in the second direction the initial first transmission resources are split, and the width of each of the transmission resources in the first direction and the transmission resources in the second direction in the time domain can be determined, and thus, the second indication information only needs to include the number of transmissions in this case. As shown in fig. 8 a, the length of the transmission resources in the first direction and the transmission resources in the second direction in the first transmission resources in the time domain are both 14 milliseconds (ms), the transmission start time and the transmission end time of the second transmission resources are the same as the transmission start time and the transmission end time of the first transmission resources, the preset time interval is fixed for 2ms, and the preset time granularity is uniform, at this time, the second indication information may only include the number of transmissions for 8 times, and the first transmission resources in fig. 8 a may be converted into the second transmission resources, where the transmission resources in each first direction and the transmission resources in each second direction in the second transmission resources are both 2ms.

For example, if the transmission start time and the transmission end time of the first transmission resource are not the same as each other, or the time granularity is not uniform, the first transmission resource is not uniformly divided into a plurality of second transmission resources, that is, the transmission resources in each first direction and the transmission resources in the second direction may have different widths in the time domain, and the time granularity and the number of transmissions cannot be determined mutually, then the second indication information may include a plurality of parameters such as the transmission start time, the time granularity, the preset time interval, the number of transmissions, the transmission end time, and the like. As shown in fig. 8 b, in the first transmission resource, the transmission resources in the first direction and the transmission resources in the second direction are both 14 milliseconds (ms), and the preset time interval is still fixed for 2ms, where the second indication information includes: transmission start time, time granularity, number of transmissions. For example, the transmission start time of the first second transmission resource is 1ms later than the transmission start time of the first transmission resource, for example, assuming that the start of the first transmission resource is 0ms, the transmission start time of the second transmission resource is determined to be 1ms, the transmission resource in the first direction is 2ms, the transmission resource in the second direction is 1ms, and the number of transmissions is 8. The first transmission resource of the diagram (b) in fig. 8 may be converted into a second transmission resource according to the second indication information.

The second indication information may also include other combinations, as long as the fission of the first transmission resource can be determined, for example, the start time may be determined according to the first transmission resource without indicating the start time of transmission, or the relationship between the start time of the first second transmission resource and the start time of the first transmission resource is preset, etc. In addition, the number of the second transmission resources does not indicate, so as to dynamically change according to the condition of the information to be transmitted, the first node and the second node dynamically determine the starting time of each service transmission according to the time granularity, and after the service transmission is completed, the transmission is stopped, namely, the fission is a dynamic process, the number of the second transmission resources changes according to the actual transmission condition, and the second indication information can indicate the time granularity. At this time, the transmission end time does not need to be indicated either.

Alternatively, the second indication information may be used to activate a plurality of second transmission resources, i.e., the second indication information is used to indicate a pattern (pattern) of the second transmission resources within the first transmission resources. For example, the pattern of the second transmission resources within the first transmission resources refers to the distribution of the first transmission resources within the first transmission resources. In one implementation, a resource distribution condition of the second transmission resource in the first transmission resource may be pre-defined, where the distribution condition may be one type, and then the second indication information may implement fission on the first transmission resource only by one bit, that is, when the second indication information is a first value, the fission on the first transmission resource is activated, and at this time, implementation is simple, and an overhead requirement on information is less; or the distribution situation can comprise a plurality of types, namely the pattern of the second transmission resource in the first transmission resource comprises a plurality of types, the second indication information can be used for indicating the identification or index of the pattern, and then the resource fission is carried out according to the pattern indicated by the second indication information. For example, the second indication information is used for indicating the pattern 1, and the first transmission resources are split into a plurality of second transmission resources corresponding to the preset pattern 1 according to the second indication information, so that the purpose of activating the plurality of second transmission resources is achieved, and the second indication information does not need to contain specific information such as transmission start time, time granularity, preset time interval, transmission times, transmission end time and the like, so that signaling overhead is saved, and the method can be flexibly suitable for requirements of different services or scenes.

Alternatively, the configuration of the pattern may be achieved by a configuration of a connection event or a connection sub-event. For example, the first node may configure parameters of the pattern in the connection request in the connection establishment procedure shown in fig. 4 or fig. 5 above; in addition, if the pattern parameters can be configured by the data packet transmitted in the parameter updating flow under the connection state, the embodiment of the application does not limit the flow in which the pattern configuration is performed.

Optionally, the first transmission resources for fission may include transmission resources in the first direction and transmission resources in the second direction, or may include transmission resources in the first direction only or transmission resources in the second direction only, which may be set according to the situation and requirements.

The data packets mentioned in the above embodiments may be PDUs, in particular data physical channel PDUs, such as link layer data PDUs or link layer control PDUs.

The communication method shown in fig. 7, by splitting the initial limited transmission resources into a plurality of transmission resources, although the width of each transmission resource after the splitting in the time domain is reduced, can still meet the transmission requirement of the control information with smaller single transmission data volume, and meanwhile, the plurality of transmission resources after the splitting can also meet the multiple transmission requirement of the control information. Therefore, the service transmission efficiency is improved. In addition, the fission of the transmission resources is controllable, the transmission start time, the time granularity, the preset time interval, the transmission times and the transmission end time of the transmission resources after the fission can be set according to actual requirements, or a plurality of fission patterns are provided to adapt to different service requirements, so that the service transmission efficiency is further improved.

The connection event establishment procedure is described above in connection with fig. 4 and 5, and may be closed after the master node and the slave node enter a connected state after the data transmission is completed. For example, a field (MD) is included in the data physical channel PDU, and the communication node informs the communication peer of whether there is more data to be transmitted through the field MD.

The existing MD field mechanism is shown in table 1.

TABLE 1

MD 0 indicates that no data needs to be transmitted, and MD 1 indicates that there is more data to be transmitted. As can be seen from table 1, only when MD of the data packet transmitted by the master node and the slave node is 0, interaction between the master node and the slave node is not continued, and when MD of either one of the master node or the slave node is 1, interaction between the master node and the slave node may be continued. Since the communication is initiated by the master node, whether to continue the interaction is decided by the master node. For example, in the case where the slave node needs to continue to transmit information with the master node after the present transmission, the slave node sets a field MD in the header of the data packet sent to the master node to a value "1" for indicating to the master node that there are more data packets to be transmitted by the slave node. The master node determines whether to end the current Connection Event (CE) according to the value of the MD field, and when the MD of the data packet sent by the master node and the slave node is 0, the master node closes the current connection event, i.e. stops sending the data packet to the slave node.

Fig. 9 shows a schematic diagram of data transmission in a connection interval, in which a connection event may exist between a master node and a slave node, as shown in fig. 9, in which multiple data interactions are allowed. For example, when the slave node sends a data packet for the first time, the slave node sends an MD field, which is used to indicate that the data of the slave node is not sent, and further, the data needs to be sent continuously, so that the master node can continue to interact with the slave node after receiving the MD field. However, this interaction method is not flexible and may not adapt to the service requirement, resulting in low transmission efficiency. For example, in fig. 9, when a slave node sends a data packet, an MD field is sent to indicate that the slave node has not sent data, and further data needs to be sent continuously, and after the master node receives the MD field, the slave node may still not interact with the slave node any more due to resource conflict or deficiency, and the slave node may only wait for the next connection interval to interact with the master node, which results in that the service requirement of the slave node cannot be satisfied, especially for the service with high priority, and may result in the degradation of user experience.

Therefore, the embodiment of the application provides a communication method, when the slave node has information of a preset type to be transmitted, the slave node can be instructed to continue the interaction of information transmission, so that the timely and complete transmission of important information is ensured. Fig. 10 shows a schematic flowchart of a communication method provided by the embodiment of the application, and the method shown in fig. 10 can be applied to short-range communication scenes in the fields of intelligent terminals, intelligent homes, intelligent manufacturing, intelligent automobiles and the like, for example, scenes including mice, keyboards, wearable devices, TWS headphones and the like. The method shown in fig. 10 includes step 1001 and step 1002, which are described below, respectively.

S1001, the first node sends a first data packet to the second node, and correspondingly, the second node receives the first data packet sent by the first node.

The communication method is used for interaction between the first node and the second node, wherein in a connection state, the first node can be a master node, and the second node can be a slave node.

Taking the short-range communication scenario as an example, a first node sends a first data packet to a second node, the second node receives the first data packet sent by the first node, at this time, communication is initiated by the first node, and the second node sends information to the first node based on the reception of the data packet sent by the first node. Alternatively, the first data packet may be a null data packet, and the second node may send information to the first node based on the reception of the data packet sent by the first node, whenever the second node receives the first data packet, whether or not the first data packet is null.

And S1002, the second node transmits a second data packet to the first node based on the receiving of the first data packet, and correspondingly, the first node receives the second data packet transmitted by the second node, wherein the second data packet comprises indication information, and the indication information is used for indicating whether the second node has information to be transmitted and the type of the information to be transmitted.

The second node transmits an indication message to the first node while transmitting the data packet, the indication message being used for indicating whether the second node has information to be transmitted or not, and if the second node has information to be transmitted, indicating the type of the information to be transmitted. The indication information may multiplex an MD field, i.e., the MD field is used to indicate whether the second node has information to be transmitted and a type of the information to be transmitted; or a field may be newly added on the basis of an MD field, where the MD field is used to indicate whether the second node has information to be transmitted, and the newly added field is used to indicate a type of information to be transmitted.

If the second node indicates that there is information to be transmitted, and the type of the information to be transmitted indicates that the information to be transmitted is important information, such as control information or data information of a specific service, the first node continues to send a third data packet to the second node to maintain a connection event, so that the first data packet, the second data packet and the third data packet are located in a connection event, wherein the third data packet may include the control information or the data information, or may be a null packet, and the main purpose of the first node sending the third data packet to the second node is to enable the second node to continue sending the 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 may send information to be transmitted to the first node based on the receipt of the third data packet, and correspondingly, the data packet of the information to be transmitted may also include indication information, which is used to indicate whether the second node still has information to be transmitted next, and if so, indicate the type of the information to be transmitted at the same time. Therefore, the information to be transmitted of the second node can be transmitted in one connection event, and the data interaction with the first node can be continued without waiting for the next connection interval, so that the service requirement of the second node is met, and especially for high-priority service, the method in FIG. 10 can ensure the instantaneity of the high-priority service, and therefore the use experience of a user is improved. The specific service is, for example, a high priority service or a preset service, wherein a service having a priority level up to or higher than the preset priority level can be regarded as a high priority service.

Alternatively, the indication information may include only one field, where the indication information indicates whether the information to be transmitted and the type of the information to be transmitted are provided, or the indication information includes a first field and a second field, which are respectively used to indicate whether the information to be transmitted and the type of the information to be transmitted are provided. The size of each field is not limited, and optionally, in order to save signaling overhead, the one field has 2 bits for describing whether there is information to be transmitted and the type of the information to be transmitted, respectively. Or the first field has 1 bit for indicating whether there is information to be transmitted, the second field has N bits for indicating the type of the information to be transmitted, and the value of N is determined according to the amount of the type of the transmission information to be indicated, for example, if two types of control information and service data information (data information for short) are indicated, the value of N may be 1; more bits may be set if more traffic data types are indicated.

In the communication method shown in fig. 10, indication information is added to a data packet sent by a slave node to a master node, the indication information is used for indicating the type of information to be transmitted, different types can be pre-agreed with different importance degrees, through the pre-agreed information, if the type of information to be transmitted indicates that the information is pre-agreed important information, the master node continues to interact with the slave node for information transmission, the situation that the slave node cannot transmit the important information due to no initiative is reduced, the possibility that the important information is scheduled is improved, for example, when the master node needs to interact with a plurality of slave nodes at the same time, the priority of the slave node a is determined to be higher according to the indication information received by the plurality of slave nodes, so that the slave node a interacts with the slave node a preferentially, namely, the data of the slave node a is transmitted preferentially, and the transmission efficiency of the important information is improved.

Fig. 11 is a schematic flowchart of another communication method provided by the embodiment of the present application, where the method shown in fig. 11 may be applied to a short-range communication scenario in the fields of smart terminals, smart homes, smart manufacturing, smart automobiles, and the like, for example, a scenario including a mouse, a keyboard, a wearable device, and a TWS headset. The method shown in fig. 11 includes S1101 to S1102, which are described below, respectively.

S1101, the first node sends indication information to the second node, and correspondingly, the second node receives the indication information sent by the first node, where the indication information indicates a transmission resource, and the transmission resource is a reserved resource or a shared resource.

In addition, the embodiment of the application for indicating the transmission resource is not limited, and may be direct indication or indirect indication, or alternatively, the indication manner may be similar to the indication of the first transmission resource, and the transmission resource may be identified as a reserved resource or a shared resource by identification.

In some cases, for example, in the communication method shown in fig. 10, if one slave node has more information to be transmitted, and the master node agrees to transmit more information with the slave node, transmission resources configured in advance for the slave node by the master node may be exceeded, so that transmission resources of other slave nodes are occupied, so that information transmission of other slave nodes cannot be guaranteed, communication quality may be reduced, and user experience may be affected. Thus, in the communication method shown in fig. 11, the master node improves the overall communication quality by configuring transmission resources when some of the information to be transmitted by the slave node exceeds its preconfigured transmission resources.

When the transmission resource is the reserved resource, the indication information indicates that the transmission resource is the reserved resource of the target node. The target node may be a node to be transmitted with preset information (or important information), such as control information or preset type data information; or the target node is a node in a preset node set (list), and the node has higher priority and can be preferentially ensured to transmit information. For example, if the target node is a node that may transmit important information in advance, if the second node has important information to be transmitted, the second node is taken as the target node, wherein the importance degree of the transmitted information may be determined by the type thereof, control information or certain data information may be predetermined as important information, and the first node configures reserved resources for the second node, which are resources that cannot be occupied by other slave nodes (non-target slave nodes). In the process of information transmission, the master node and other slave nodes firstly determine whether transmission resources occupied by the information to be transmitted conflict with reserved resources for the target node, and if so, the master node and other slave nodes do not transmit the information to be transmitted.

When the above transmission resource is a shared resource, the indication information indicates that the transmission resource is a shared resource, where the shared resource is a resource that can be occupied by multiple (or all) slave nodes, and the indication information may be broadcast information. For the slave node, after the dedicated transmission resource allocated by the master node is used up, if there is data to be transmitted, the shared resource can be used for transmission, but since the shared resource is limited, it cannot be satisfied that a plurality of slave nodes are used at the same time, so the communication method shown in fig. 11 also sets a condition for the slave node to use the shared resource. Specifically, the indication information further includes a preset value, where the preset value is preconfigured by the system, or the preset value may be independent of the information indicating the transmission resource; in another implementation, the preset value is a preset value, and the indication is not required to be performed through indication information. When the second node shown in fig. 11 needs to use the shared resource, it generates a random number, if the first relationship between the random number and the preset value is satisfied, the second node may use the shared resource to perform information transmission interaction with the first node, and if the first relationship is not satisfied, the second node may not use the shared resource to perform information transmission interaction with the first node. The first relation may be that the random number is greater than or equal to a preset value, or the first relation may be that the random number is less than the preset value, and the first relation may be preset, which is not limited herein. Alternatively, the shared resource may be a semi-static resource, meaning that multiple shared resources may be configured within one connection event, and the second node may occupy the shared resource multiple times in succession if the condition for using the shared resource is met. The specific number of consecutive occupancies may be predetermined 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, wherein the reserved resource is reserved for the target slave node and cannot be occupied by the non-target slave node, the target slave node uses the reserved resource to carry out information transmission with the first node, and if the second node is the target slave node, the second node uses the reserved resource to carry out information transmission with the first node; when the transmission resource is a shared resource, the second node determines the shared resource according to the indication information, and when the second node still has information to be transmitted and the occupation condition is met, the second node can occupy the shared transmission resource and the first node to transmit the information, wherein the information to be transmitted can be control information or data of a preset service.

In the communication method shown in fig. 11, the master node configures additional transmission resources for the slave node, and when the additional transmission resources are reserved resources, the data transmission of the slave node can be provided, so that the reduction of transmission quality caused by occupation of other slave nodes is reduced. When the additional transmission resource is a shared resource, on one hand, the transmission quality of the slave node with important information to be transmitted can be ensured, and on the other hand, the transmission resources of other slave nodes occupied by the slave node for transmitting the important information can be reduced, so that the overall communication quality is ensured.

Another communication method provided in the embodiments of the present application is described below with reference to the accompanying drawings and examples.

Fig. 12 is a schematic diagram of another communication method according to an embodiment of the present application, where transmission resources of a single interaction are split into transmission resources of multiple interactions in the time domain, and the number of interactions is increased. The method shown in fig. 12 is a specific implementation manner of the method shown in fig. 7, specifically, the indication information sent by the first node to the second node includes a connection interval parameter or a subinterval parameter to determine resources R11, R12 or resources R21, R22, and the second node performs fission according to the determined resources R11, R12, the pre-fission transceiving transfer time or the determined resources R21, R22, the pre-fission transceiving transfer time. In fig. 12, a first node serves as a master node and a second node serves as a slave node.

As shown in fig. 12, the master node transmits first indication information including a connection interval parameter or a sub-interval parameter to the slave node for determining initial transmission resources, where the initial transmission resources include initial transmission resources in a first direction and initial transmission resources in a second direction, 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 resources for the master node to transmit data packets to the slave node, and the initial transmission resources in the second direction are resources for the slave node to transmit data packets to the master node. When a new service arrives, frequent interaction of control information is needed, if the initial transmission resource is adopted for interaction, only one piece of control information in the first direction can be transmitted in the initial transmission resource in the first direction each time, if the control information interaction process is longer, the interaction can be completed only by a plurality of interaction periods, and the time span is long, so that the transmission of other services can be influenced.

Therefore, the method for transmitting data in the embodiment of the present application splits the initial single transmission resource into a plurality of transmission resource pairs, and the data size of some important data (e.g., control information) is not large, so that the transmission of data can be completed in the time domain corresponding to the original single transmission resource only by using the transmission resource with smaller time granularity.

Specifically, the master node transmits second indication information to the slave node, for indicating that the initial transmission resources in the first direction, the initial transmission resources in the second direction, and the transmission-reception conversion time therebetween are split into a plurality of transmission resource pairs, as shown in fig. 12. The indication information may include one or more of transmission start time, time granularity, number of transmissions, preset time interval, transmission end time, etc. Alternatively, generally, the preset time interval is determined by hardware conditions such as a device, and the start time and the end time of transmission may be determined by the start time and the end time of the original transmission resource, and the time granularity and the number of transmissions affect each other, so the indication information may only include the time granularity or the number of transmissions. Alternatively, the protocol may pre-define fixed fission modes, each corresponding to an index, through which different fission modes may be indicated, which may include different time granularity, number of transmissions, preset time intervals, etc. Reference may be made specifically to the description of fig. 8, and the embodiments of the present application are not repeated here.

In fig. 12, the transception transition time between the initial transmission resources in the first direction and the initial transmission resources in the second direction may also be used for fission, and the preset time interval is used to determine the transception transition time between the transmission resources in the first direction after fission and the transmission resources in the second direction after fission, and the transception transition time before fission may be different from the transception transition time after fission. For example, the transceiving switching time before fission is 4ms, the preset time interval is 1ms, and the transceiving switching time after fission is 1ms.

Another communication method of the embodiments of the present application improves on the existing MD field indication scheme, not only uses the MD mechanism to indicate whether there is more data to be transmitted, but also indicates 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 may be a field including 2 bits, wherein the first bit indicates whether there is information to be transmitted, and has a value of 1, and not a value of 0, and the second bit indicates the type of information to be transmitted, and has a preset type of 1, and not a preset type of 0, wherein the control information or some service data may be used as a preset type. Or the indication information may be two fields, each field being 1 bit, wherein the first field indicates whether there is information to be transmitted, and is 1, and not 0, and the second field indicates a type of information to be transmitted, and wherein the type is 1, and not 0, and wherein the control information or some service data may be used as a preset type. In particular, when there is no information to be transmitted, the type of information to be transmitted is null, also denoted by 0. Thus, 00 in table 2 indicates that there is no information to be transmitted; 10 denotes information to be transmitted, the type of the information to be transmitted is not a preset type; 11 denotes information to be transmitted, and the type of the information to be transmitted is a preset type. Therefore, when the indication information of the master node and the slave node is 00, the master node closes the connection event, and the slave node does not monitor any more; when the indication information of any one of the master node and the slave node is 11, the master node needs to continue to connect with the event, and the slave node needs to continue to monitor; in other cases, the master node may continue the connection event, which is determined by the master node, for example, the transmission resource is abundant at this time, and even if the information to be transmitted is not of a preset type, the master node may interact with the slave node to continue the information transmission, and the slave node needs to continue to monitor.

According to the communication method, the data packet header interacted by the master node and the slave node carries indication information for indicating the type of data to be transmitted, such as control information or service data. Therefore, when important data transmission exists, the slave node only needs to indicate the information to be transmitted and indicate whether the type of the information to be transmitted is a preset type, namely, the slave node can be ensured to carry out complete important information transmission with the master node, and therefore the communication quality is ensured.

Fig. 13 is a schematic diagram of still another communication method according to an embodiment of the present application, where corresponding resources are configured through a broadcast message, so as to protect important data transmission from being interrupted. The method of fig. 13 is a specific implementation of the method of fig. 11, where in fig. 13, the first node is a master node and the second node is a slave node.

As shown in fig. 13, in the first aspect, a master node may configure a reserved resource through a broadcast message, where the reserved resource is an unoccupied resource, and the unoccupied resource is used to transmit preset-type data, including control information or important service data, where the important service data may be data of a preset-type service. When the slave node determines that the time resource of the common data (namely, the data of a non-preset type) to be transmitted can conflict with the unoccupied resource based on the preset time interval, the slave node does not transmit the common data; when the master node determines that the time resource of the normal data to be transmitted conflicts with the unoccupied resource based on the preset time interval, the master node does not transmit the normal data.

As shown in fig. 13, in the second aspect, a master node may configure a burst (burst) resource, which is a shared resource, through a broadcast message, and allow a slave node to transmit a preset type of data including control information or important service data, which may be data of a preset type of service, using the burst resource.

Specifically, for a slave node, when the dedicated transmission resource allocated by the master node to the slave node is used up, if the slave node still has data to be transmitted (such as control information or important service data), the slave node may use the burst resource to perform data transmission with the master node. In order to reduce the burst resources from being occupied for a long time, it is possible to 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, for example, a random number between 0 and 1, then compares the random number with a value P1 preset by the system, if a certain relation is satisfied between the random number and P1, for example, the random number is smaller than P1, the slave node may occupy the burst resource, and if the random number is greater than or equal to P1, the slave node may not occupy the burst resource. Or, each time the slave node occupies the burst resource, 1 is added to the count value, when the count value does not reach the threshold value, the slave node can use the burst resource, and when the count value reaches the threshold value, the slave node cannot use the burst resource.

As shown in fig. 13, the burst resource may be a semi-static resource, i.e., periodic for a period of time. Thus, when a slave node is determined to be able to occupy the burst resource, it is further determined how many times the slave node can be continuously occupied. For example, the protocol agrees or the master node configures a maximum number of allowed successive occupancies. Taking the maximum number of times of 5 as an example, the slave node can generate a random number 3 between [1,5], i.e. the number of times that the slave node can continuously occupy the burst resource is 3 times.

The information in the embodiments above or below the present application may include data information or control information, which may be transmitted in the form of data PDUs or control PDUs, and the data packets in the embodiments of the present application are, for example, PDUs, and may be data packet PDUs or control PDUs.

It should be understood that the embodiments described in the embodiments of the present application may be independent schemes, or may be combined according to internal logic, and these schemes fall within the protection scope of the present application.

The communication method provided by the embodiment of the present application is described in detail above with reference to fig. 6 to 13. The following describes in detail the communication device provided in the embodiment of the present application with reference to fig. 14 to 15. It should be understood that the descriptions of the apparatus embodiments and the descriptions of the method embodiments correspond to each other, and thus, descriptions of details not described may be referred to the above method embodiments, which are not repeated herein for brevity.

Fig. 14 is a schematic block diagram of a communication apparatus provided in an embodiment of the present application. The apparatus 1400 includes a transceiver unit 1410 and a processing unit 1420. The transceiver unit 1410 may implement corresponding communication functions, and the processing unit 1420 is configured to perform data processing. The transceiver unit 1410 may also be referred to as a communication interface or a communication unit.

Optionally, the apparatus 1400 may further comprise a storage unit, which may be used for storing instructions and/or data, and the processing unit 1420 may read the instructions and/or data in the storage unit, so that the apparatus implements the foregoing method embodiments.

The apparatus 1400 may be configured to perform the actions performed by the second node in the above method embodiment, specifically, the transceiver unit 1410 is configured to perform the operations related to the transceiver on the second node side in the above method embodiment, and the processing unit 1420 is configured to perform the operations related to the processing on the second node side in the above method embodiment.

The apparatus 1400 may implement steps or processes performed corresponding to the second node side in the method embodiments according to the embodiments of the present application, and the apparatus 1400 may include means for performing the methods performed by the second node side in fig. 7, 10 and 11. And, each unit in the apparatus 1400 and the other operations and/or functions described above are respectively for implementing the corresponding flows of the method embodiments in the second node side in fig. 7, 10 and 11.

Wherein, when the apparatus 1400 is used to perform the method 700 in fig. 7, the transceiver unit 1410 may be used to perform the steps 701 and 702 in the method 700; processing unit 1420 may be used to perform processing steps in method 700, such as step 703.

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

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

A possible implementation manner, the second indication information is used for determining a plurality of second transmission resources, including: and determining a plurality of second transmission resources according to the second indication information and a plurality of preset patterns of the plurality of second transmission resources in the first transmission resources, wherein the patterns are predefined.

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

One possible implementation, the first transmission resource includes a transmission resource in a first direction, or a transmission resource in a second direction, or a transmission resource in the first direction and a transmission resource in the second direction.

The apparatus 1400 may include means for performing the method performed at the second node side in fig. 10. And, each unit in the apparatus 1400 and the other operations and/or functions described above are respectively for implementing the corresponding flow of the method embodiment in the second node side in fig. 10.

Wherein when the apparatus 1400 is used for performing the method 1000 in fig. 10, the transceiving unit 1410 may be used for performing the step 1001 in the method 1000, and the processing unit 1420 may be used for performing the step 1002 in the method 1000.

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

One possible implementation way, 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: receiving a third data packet sent by a first node, wherein the first data packet, the second data packet and the third data packet are in a connection event; the processing unit 1420 is further configured to send, based on the reception of the third data packet, information to be transmitted to the first node through the transceiver unit.

One possible implementation manner, the indication information includes a first field and a second field, the first field is used for indicating whether the information to be transmitted is provided, the second field is used for indicating the type of the information to be transmitted, or the indication information includes a field. The apparatus 1400 may also include means for performing the method performed at the second node side in fig. 11. And, each unit in the apparatus 1400 and the other operations and/or functions described above are respectively for implementing the corresponding flow of the method embodiment in the second node side in fig. 11.

Wherein, when the apparatus 1400 is used for executing the method 1100 in fig. 11, the transceiving unit 1410 may be used for executing the step 1101 in the method 1100; processing unit 1420 may be used to perform step 1102 in method 1100.

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

One possible implementation manner is that the second node is a target node, the transmission resource is a reserved resource, and the first node and the second node communicate on the reserved resource.

In one possible implementation manner, the indication information further includes a preset value, and the method further includes: the transmission resource is shared resource, and the second node generates a first random number; when the first random number and the preset value meet the first relation, the second node and the second node communicate on the shared resource.

One possible implementation manner is that the transmission resource is a shared resource, and the indication information further includes a preset maximum number of times N of continuous occupation of the transmission resource, where N is an integer greater than 0; the second node communicates with the first node on the shared resource N consecutive times.

The apparatus 1400 may be configured to perform the actions performed by the first node in the above method embodiment, specifically, the transceiver unit 1410 is configured to perform the operations related to the transceiver on the first node side in the above method embodiment, and the processing unit 1420 is configured to perform the operations related to the processing on the first node side in the above method embodiment.

The apparatus 1400 may implement steps or processes performed corresponding to the first node side in the method embodiments according to the embodiments of the present application, and the apparatus 1400 may include means for performing the methods performed by the first node side in fig. 7, 10 and 11. And, each unit in the apparatus 1400 and the other operations and/or functions described above are respectively for implementing the corresponding flows of the method embodiments in the first node side in fig. 7, 10 and 11.

The apparatus 1400 may include means for performing the method performed by the first node side in fig. 7. And, each unit in the apparatus 1400 and the other operations and/or functions described above are respectively for implementing the corresponding flow of the method embodiment in the first node side in fig. 7.

Specifically, the processing unit 1410 is configured to send, through the transceiver unit 1410, first indication information to the second node, where the first indication information is used to determine a first transmission resource; the processing unit 1410 is further configured to send, to the second node, second indication information through the transceiver unit 1410, where the second indication information is used to determine a plurality of second transmission resources, where 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 is further configured to communicate with a second node over at least one second transmission resource through the transceiving unit 1410.

The apparatus 1400 may include means for performing the method performed by the first node side in fig. 10. And, each unit in the apparatus 1400 and the other operations and/or functions described above are respectively for implementing the corresponding flow of the method embodiment in the first node side in fig. 10.

Wherein, the processing unit 1420 is configured to send the first data packet to the second node through the transceiver unit 1410; the transceiver unit 1410 is further configured to receive a second data packet sent by the second node, where the second data packet includes indication information, and the first indication information is used to indicate whether the second data packet has information to be transmitted and a type of the information to be transmitted.

In a possible implementation manner, the indication information indicates that the information to be transmitted is provided, and the processing unit 1420 is further configured to: transmitting a third data packet to the second node through the transceiving unit 1410, the first data packet, the second data packet, and the third data packet being located within one connection event; the information to be transmitted sent by the second node is received by the transceiving unit 1410.

One possible implementation manner, the indication information includes a first field and a second field, the first field is used for indicating whether the information to be transmitted is provided, the second field is used for indicating the type of the information to be transmitted, or the indication information includes a field.

The apparatus 1400 may include means for performing the method performed by the first node side in fig. 11. And, each unit in the apparatus 1400 and the other operations and/or functions described above are respectively for implementing the corresponding flow of the method embodiment in the first node side in fig. 11.

Specifically, the transceiver unit 1410 is configured to send indication information to the second node, where the indication information is used to indicate a transmission resource, and the transmission resource is a reserved resource or a shared resource. The processing unit 1420 is configured to communicate with the second node over a reserved or shared resource through the transceiving unit 1410.

In a possible implementation, the indication information indicates that the transmission resource is a reserved resource of the target node, and the processing unit 1420 is configured to communicate with the second node via the transceiving unit 1410 on the reserved transmission resource.

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

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

It will be appreciated that the above-described transceiver units may be of an integrated design, i.e. comprising both receiving and transmitting functions, or of a separate design, i.e. replaced by a receiving unit with receiving functions and a transmitting unit with transmitting functions.

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

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

As shown in fig. 15, the embodiment of the application further provides a communication device 1500. The apparatus 1500 includes a transceiver 1510 and may further include a processor 1520 coupled to a memory 1530. The transceiver 1530 is used for receiving and/or transmitting signals. For example, the processor 1520 is configured to control the transceiver 1510 to receive and/or transmit signals. The memory 1530 is used for storing computer programs or instructions and/or data, and the processor 1520 is used for executing the computer programs or instructions and/or data stored by the memory 1530, so that the methods in the above method embodiments are performed. In particular, the processor 1520 may be a central processing unit (central processing unit, CPU), a network processor (network processor, NP) or a combination of CPU and NP. The processor 1520 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (programmable logic device, PLD), or a combination thereof. The PLD may be a complex programmable logic device (complex programmable logic device, CPLD), a field-programmable gate array (field-programmable gate array, FPGA), general-purpose array logic (generic array logic, GAL), or any combination thereof.

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

Optionally, as shown in fig. 15, the apparatus 1500 may also include a memory 1530.

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

Alternatively, the memory 1530 may be integrated with the processor 1520 or may be separate.

As an option, the apparatus 1500 is configured to implement the operations performed by the second node in the above method embodiment.

As an option, the apparatus 1500 is configured to implement the operations performed by the first node in the above method embodiments. The embodiment of the application also provides a communication device, which comprises: a memory for storing a program; and a processor for executing the program stored in the memory, wherein when the program stored in the memory is executed, the processor is configured to execute the method executed by the first node or the second node in the above method embodiment.

Embodiments of the present application also provide a computer-readable storage medium, including: the computer readable medium stores a computer program; the computer program, when executed by one or more processors, causes an apparatus comprising the processor to perform the method performed by the first node or the second node in the method embodiments described above.

The embodiment of the application also provides a chip, which comprises a processor and a data interface, wherein the processor reads the instructions stored in the memory through the data interface to execute the method executed by the first node or the second node in the embodiment of the method.

The embodiment of the application also provides a terminal, which comprises any one of the devices shown in fig. 14 and 15, and can be a vehicle, including a vehicle with intelligent driving and auxiliary driving technologies.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between 2 or more computers. Furthermore, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with one another in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be embodied in essence or a contributing part or a part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of communication, comprising:

receiving first indication information from a first node, wherein the first indication information is used for determining a first transmission resource;

receiving second indication information from the first node, wherein the second indication information is used for determining a plurality of second transmission resources, the second transmission resources are contained in the first transmission resources, and each second transmission resource comprises a transmission resource in a first direction and a transmission resource in a second direction;

and communicating with the first node through the at least one second transmission resource.
The method of claim 1, wherein the second indication information comprises one or more of a transmission start time, a time granularity, a preset time interval, a number of transmissions, and a transmission end time.
The method of claim 1 or 2, wherein the second indication information is used to activate the plurality of second transmission resources;

determining the plurality of second transmission resources according to the second indication information and a pattern of the plurality of second transmission resources within the first transmission resources, the pattern being predefined.
A method according to any of claims 1 to 3, wherein the first transmission resource is a transmission resource in a connection event or a connection sub-event.
The method according to any of claims 1 to 4, wherein the first transmission resources comprise transmission resources of a first direction, or transmission resources of a second direction, or transmission resources of the first direction and transmission resources of the second direction.
A method of communication performed by a second node, comprising:

receiving a first data packet sent by a first node;

and transmitting a second data packet to the first node based on the reception of the first data packet, wherein the second data packet comprises indication information, and the indication information is used for indicating whether the second node has information to be transmitted and the type of the 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, the method further comprising:

receiving a third data packet sent by the first node, wherein the first data packet, the second data packet and the third data packet are positioned in a connection event;

and sending the information to be transmitted to the first node based on the receiving of the third data packet.
The method according to any one of claims 6 to 8, wherein the indication information comprises a first field for indicating whether there is information to be transmitted and a second field for indicating the type of information to be transmitted, or,

the indication information includes a field.
A method of communication performed by a first node, comprising:

transmitting first indication information to a second node, wherein the first indication information is used for determining a first transmission resource;

transmitting second indication information to the second node, wherein 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, and each second transmission resource comprises a transmission resource in a first direction and a transmission resource in a second direction;

and communicating with the second node through the at least one second transmission resource.
The method of claim 10, wherein the second indication information comprises one or more of a transmission start time, a time granularity, a preset time interval, a number of transmissions, and a transmission end time.
The method of claim 10 or 11, wherein the second indication information is used to activate the plurality of second transmission resources;

Determining the plurality of second transmission resources according to the second indication information and a pattern of the plurality of second transmission resources within the first transmission resources, the pattern being predefined.
The method according to any of claims 10 to 12, wherein the first transmission resource is a transmission resource in a connection event or a connection sub-event.
The method according to any of claims 10 to 13, wherein the first transmission resources comprise transmission resources of a first direction, or transmission resources of a second direction, or transmission resources of the first direction and transmission resources of the second direction.
A method of communication performed by a first node, comprising:

transmitting the first data packet to the second node;

and receiving a second data packet sent by the second node, wherein the second data packet comprises indication information, and the indication information is used for indicating 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, the method further comprising:

Transmitting a third data packet to the second node, the first data packet, the second data packet and the third data packet being located within a connection event;

and receiving the information to be transmitted sent by the second node.
The method according to any one of claims 15 to 17, wherein the indication information comprises a first field for indicating whether there is information to be transmitted and a second field for indicating the type of information to be transmitted, or,

the indication information includes a field.
A communication device, comprising: a transceiver unit and a processing unit, wherein

The receiving and transmitting unit is used for receiving first indication information from a first node, wherein the first indication information is used for determining a first transmission resource;

the transceiver unit is further configured to receive second indication information from the first node, where the second indication information is used to determine a plurality of second transmission resources, where the plurality of second transmission resources are included in the first transmission resource, and each second transmission resource includes a transmission resource in a first direction and a transmission resource in a 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 apparatus of claim 19, wherein the second indication information comprises one or more of a transmission start time, a time granularity, a preset time interval, a number of transmissions, a transmission end time.
The apparatus of claim 19 or 20, wherein the second indication information is used to determine the plurality of second transmission resources, the processing unit further to:

and determining the second transmission resources according to the second indication information and a plurality of preset patterns of the second transmission resources in the first transmission resources, wherein the patterns are predefined.
The apparatus according to any of claims 19 to 21, wherein the first transmission resource is a transmission resource in a connection event or a connection sub-event.
The apparatus of any of claims 19 to 22, wherein the first transmission resources comprise transmission resources of a first direction, or transmission resources of a second direction, or transmission resources of the first direction and transmission resources of the second direction.
A communication apparatus provided on a second node side, comprising: the receiving and transmitting unit is used for receiving a first data packet sent by the first node;

The processing unit is configured to send, based on the reception of the first data packet, a second data packet to the first node through the transceiver unit, where the second data packet includes indication information, where the indication information is used to indicate whether the second node has information to be transmitted and a type of the information to be transmitted.
The apparatus of claim 24, wherein the type of information to be transmitted is control information or data information.
The apparatus of claim 24 or 25, wherein the indication information indicates that there is information to be transmitted, the transceiver unit further configured to:

receiving a third data packet sent by the first node, wherein the first data packet, the second data packet and the third data packet are positioned in a connection event;

the processing unit is further configured to send, based on the reception of the third data packet, the information to be transmitted to the first node through the transceiver unit.
The apparatus according to any one of claims 24 to 26, wherein the third indication information comprises a first field for indicating whether there is information to be transmitted and a second field for indicating the type of information to be transmitted, or,

The indication information includes a field.
A communication apparatus located at a first node side, comprising: 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 a 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 are included in the first transmission resource, and each second transmission resource includes a transmission resource in a first direction and a transmission resource in a second direction;

the processing unit is further configured to communicate with the second node at the at least one second transmission resource through the transceiver unit.
The apparatus of claim 28, wherein the second indication information comprises one or more of a transmission start time, a time granularity, a preset time interval, a number of transmissions, a transmission end time.
The apparatus of claim 28 or 29, wherein the second indication information is used to determine the plurality of second transmission resources, the processing unit further to:

And determining the second transmission resources according to the second indication information and a plurality of preset patterns of the second transmission resources in the first transmission resources, wherein the patterns are predefined.
The apparatus of any of claims 29 to 30, wherein the first transmission resource is a transmission resource in a connection event or a connection sub-event.
The apparatus of any of claims 29 to 31, wherein the first transmission resources comprise transmission resources in a first direction, or transmission resources in a second direction, or transmission resources in the first direction and transmission resources in the second direction.
A communication apparatus located at a first node side, comprising: a processing unit and a receiving and transmitting unit,

the processing unit is used for sending a first data packet to the second node through the receiving-sending unit;

the receiving and transmitting unit is further configured to 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 a type of the information to be transmitted.
The apparatus of claim 33, wherein the type of information to be transmitted is control information or data information.
The apparatus of claim 33 or 34, wherein the third indication information indicates that there is information to be transmitted, the processing unit further to:

transmitting a third data packet to the second node through the transceiver unit, wherein the first data packet, the second data packet and the third data packet are positioned in a connection event;

the receiving and transmitting unit is further configured to receive the information to be transmitted sent by the second node.
The apparatus according to any one of claims 33 to 35, wherein the indication information comprises a first field for indicating whether there is information to be transmitted and a second field for indicating the type of information to be transmitted, or,

the indication information includes a field.
A computer-readable storage medium, comprising: the computer readable medium stores a computer program; the computer program, when executed by one or more processors, causes an apparatus comprising the processor to perform the method of any of claims 1 to 5, 6 to 9, 10 to 14, or 15 to 18.
A chip comprising a processor and a communication interface through which the processor reads instructions to perform the method of any one of claims 1 to 5, 6 to 9, 10 to 14 or 15 to 18.
A terminal comprising a communication device as claimed in any one of claims 19 to 23, 24 to 27, 28 to 32 or 33 to 36.