Communication method and device

Abstract

The present application provides a communication method and apparatus applied to a first communication device of a first communication group, the method including: determining transmission resources for the communication devices in the first communication group based on a first transmission resource set of the first communication group, where the transmission resource sets of each communication group within a communication range of the first communication group are different; and sending first indication information to the communication devices in the first communication group, where the first indication information is used to indicate the transmission resources of the communication devices in the first communication group. Compared with the prior art, because the transmission resource sets of each communication group are different, resource coordination between each communication group can be realized and interference between the communication groups can be avoided.

Description

[Technical field]

[0001] TECHNICAL FIELD This application relates to the field of information technology, and in particular to communication methods and apparatus. [Background technology]

[0002] In the prior art, terminals are divided into different communication groups, and terminals in each communication group can communicate directly with each other. However, when multiple communication groups exist in a certain area and the multiple communication groups communicate using the same carrier, there is a problem that mutual interference occurs between the communication groups. Summary of the Invention

[0003] The embodiments of the present application provide a communication method and apparatus that resolves mutual interference between communication groups in the prior art.

[0004] A first aspect of the present application provides a communication method applied to a first communication device of a first communication group, the method comprising: determining transmission resources for communication devices in the first communication group based on a first transmission resource set of the first communication group; transmitting first indication information to communication devices in the first communication group; a transmission resource set between each communication group within a communication range of the first communication group is different; The first indication information is used to indicate transmission resources of communication devices in the first communication group.

[0005] In an alternative embodiment, the method further comprises: Obtaining pre-configured information of a first communication device of the first communication group; and determining the first transmission resource set based on pre-configured information of a first communication device of the first communication group.

[0006] In an optional embodiment, the pre-defined information includes at least one of the number of terminals in the first communication group, the type of terminals in the first communication group, and service attribute parameters of the first communication group.

[0007] In an alternative embodiment, the method further comprises: receiving second indication information transmitted by a second communication device of a second communication group; and determining the first transmission resource set based on the second indication, the second indication including available transmission resources of the first communication group.

[0008] In alternative embodiments, the second indication information is carried in broadcast information, system information, radio resource control (RRC) signaling or control signaling.

[0009] In an alternative embodiment, the method further comprises: Receiving a synchronization signal and broadcast information transmitted by a second communication device of the second communication group.

[0010] In an alternative embodiment, the method further comprises: Sending a resource change request to a second communication device of the second communication group, the resource change request being used to request or cancel transmission resources of the first communication group, and the resource change request including information of the first communication group.

[0011] In an optional embodiment, the information of the first communication group includes at least one of an identification information of the first communication group, an identification information of a first communication device of the first communication group, a number of terminals of the first communication group, and a service attribute parameter of the first communication group.

[0012] In an optional embodiment, the service attribute parameters of the first communication group include at least one of a data budget size, a packet transmission frequency, a transmission reliability, a transmission rate, and a transmission delay.

[0013] In an alternative embodiment, the first transmission resource set is used to indicate available transmission resources of the first communication group or unavailable transmission resources of the first communication group.

[0014] In an optional embodiment, the first transmission resource set comprises time domain resource information and / or frequency domain resource information.

[0015] A second aspect of the present application provides a communication method applied to a second communication device of a second communication group, the method comprising: and transmitting second instruction information to a first communication device of a first communication group, the second instruction information being used to determine a first transmission resource set of the first communication group, the transmission resource set between each communication group within a communication range of the first communication group being different.

[0016] In alternative embodiments, the second indication information is carried in broadcast information, system information, radio resource control (RRC) signaling or control signaling.

[0017] In an alternative embodiment, the method further comprises: receiving a resource modification request sent by a first communication device of the first communication group; determining available transmission resources of the first communication group based on information of the first communication group; The resource modification request is used to request or cancel transmission resources for the first communication group, and the resource modification request includes information of the first communication group.

[0018] In an optional embodiment, the information of the first communication group includes at least one of an identification information of the first communication group, an identification information of a first communication device of the first communication group, a number of terminals of the first communication group, and a service attribute parameter of the first communication group.

[0019] In an optional embodiment, the service attribute parameters of the first communication group include at least one of a data budget size, a packet transmission frequency, a transmission reliability, a transmission rate, and a transmission delay.

[0020] In an alternative embodiment, the method further comprises: updating a second transmission resource set of the second communication group based on the first transmission resource set; and sending third instruction information to the communication devices in the second communication group, the third instruction information being used to indicate the changed transmission resources to the communication devices in the second communication group.

[0021] In an alternative embodiment, the first transmission resource set is used to indicate available transmission resources of the first communication group or unavailable transmission resources of the first communication group.

[0022] In an optional embodiment, the first transmission resource set comprises time domain resource information and / or frequency domain resource information.

[0023] A third aspect of the present application provides a communication device including a processing module and a transmitting module, The processing module is configured to determine transmission resources for communication devices in the first communication group based on a first transmission resource set of the first communication group, where the transmission resource sets between each communication group within a communication range of the first communication group are different; The transmitting module is configured to transmit first indication information to communication devices in the first communication group, the first indication information being used to indicate transmission resources of the communication devices in the first communication group.

[0024] In an optional embodiment, the processing module is further configured to obtain pre-configured information of the communication device and determine the first transmission resource set based on the pre-configured information of the communication device.

[0025] In an optional embodiment, the pre-defined information includes at least one of the number of terminals in the first communication group, the type of terminals in the first communication group, and service attribute parameters of the first communication group.

[0026] In an alternative embodiment, the device further comprises a receiving module; The receiving module is configured to receive second indication information transmitted by a second communication device of a second communication group, the second indication information including available transmission resources of the first communication group; The processing module is further configured to determine the first transmission resource set based on the second indication.

[0027] In alternative embodiments, the second indication information is carried in broadcast information, system information, radio resource control (RRC) signaling or control signaling.

[0028] In an alternative embodiment, the receiving module is further configured to receive a synchronization signal and broadcast information transmitted by a second communication device of the second communication group.

[0029] In an optional embodiment, the sending module is further configured to send a resource change request to a second communication device of the second communication group, the resource change request being used to request or cancel transmission resources of the first communication group, and the resource change request including information of the first communication group.

[0030] In an optional embodiment, the information of the first communication group includes at least one of an identification information of the first communication group, an identification information of a first communication device of the first communication group, a number of terminals of the first communication group, and a service attribute parameter of the first communication group.

[0031] In an optional embodiment, the service attribute parameters of the first communication group include at least one of a data budget size, a packet transmission frequency, a transmission reliability, a transmission rate, and a transmission delay.

[0032] In an alternative embodiment, the first transmission resource set is used to indicate available transmission resources of the first communication group or unavailable transmission resources of the first communication group.

[0033] In an optional embodiment, the first transmission resource set comprises time domain resource information and / or frequency domain resource information.

[0034] A fourth aspect of the present application provides a communication device including a transmission module, The transmitting module is configured to transmit second instruction information to a first communication device of a first communication group, the second instruction information being used to determine a first transmission resource set of the first communication group, and the transmission resource sets between each communication group within a communication range of the first communication group being different.

[0035] In alternative embodiments, the second indication information is carried in broadcast information, system information, radio resource control (RRC) signaling or control signaling.

[0036] In an alternative embodiment, the device further comprises a receiving module; The receiving module is configured to receive a resource change request sent by a first communication device of the first communication group, the resource change request being used to request or cancel transmission resources of the first communication group, and the resource change request including information of the first communication group.

[0037] The processing module is configured to determine available transmission resources for the first communication group based on information of the first communication group.

[0038] In an optional embodiment, the information of the first communication group includes at least one of an identification information of the first communication group, an identification information of a first communication device of the first communication group, a number of terminals of the first communication group, and a service attribute parameter of the first communication group.

[0039] In an optional embodiment, the service attribute parameters of the first communication group include at least one of a data budget size, a packet transmission frequency, a transmission reliability, a transmission rate, and a transmission delay.

[0040] In an optional embodiment, the processing module is further configured to update a second transmission resource set of the second communication group based on the first transmission resource set; The transmitting module is further configured to transmit third instruction information to the communication devices in the second communication group, the third instruction information being used to indicate the changed transmission resources to the communication devices in the second communication group.

[0041] In an alternative embodiment, the first transmission resource set is used to indicate available transmission resources of the first communication group or unavailable transmission resources of the first communication group.

[0042] In an optional embodiment, the first transmission resource set comprises time domain resource information and / or frequency domain resource information.

[0043] A fifth aspect of the present application provides a communication device comprising a processor, a memory, a transmitter, and a receiver.

[0044] The memory stores a computer program; The processor calls and executes a computer program stored in the memory to perform the method according to the first or second aspect; the transmitter performs the transmit operations of the processor; The receiver performs the receiving operations of the processor.

[0045] A sixth aspect of the present application provides a chip comprising a processor for executing a computer program which, when called from a memory, causes a device in which the chip is mounted to perform a method according to the first or second aspect.

[0046] A seventh aspect of the present application provides a computer readable storage medium for storing a computer program, the computer program causing a computer to perform a method according to the first or second aspect.

[0047] An eighth aspect of the present application provides a computer program product comprising computer program information for causing a computer to perform a method according to the first or second aspect.

[0048] A ninth aspect of the present application provides a computer program, the computer program causing a computer to carry out a method according to the first or second aspect.

[0049] According to the communication method and apparatus of the embodiment of the present application, a first communication device applied to a first communication group determines transmission resources of communication devices in the first communication group according to a first transmission resource set of the first communication group, and the transmission resource sets of each communication group within the communication range of the first communication group are all different. Then, send first indication information to the communication devices in the first communication group, and the first indication information indicates the transmission resources of the communication devices in the first communication group. Compared with the prior art, because the transmission resource sets of each communication group are all different, resource cooperation between each communication group can be realized to avoid interference between the communication groups. [Brief description of the drawings]

[0050] In order to more clearly describe the technical solutions in the present application or the prior art, the accompanying drawings necessary for the description of the embodiments or the prior art will be briefly described below. The accompanying drawings in the following description are some embodiments of the present application, and it is obvious that those skilled in the art can obtain other drawings based on these drawings without any creative efforts. [Figure 1] FIG. 1 is a schematic diagram of sidelink communication of network coverage in an embodiment of the present application. [Diagram 2] FIG. 1 is a schematic diagram of sidelink communication in a portion of the network coverage in an embodiment of the present application. [Diagram 3] FIG. 1 is a schematic diagram of sidelink communication outside network coverage in an embodiment of the present application. [Figure 4] FIG. 13 is a schematic diagram of another sidelink communication outside network coverage in an embodiment of the present application. [Diagram 5] 2 is a flowchart of a communication method according to an embodiment of the present application. [Figure 6] 4 is a flowchart of another communication method in an embodiment of the present application. [Figure 7] FIG. 2 is a diagram showing the structure of symbol information in a wireless frame in an embodiment of the present application. [Figure 8]FIG. 2 is a schematic diagram of signaling interactions of a communication method in an embodiment of the present application; [Figure 9] FIG. 2 is a schematic diagram of signaling interactions of another communication method in an embodiment of the present application; [Figure 10] FIG. 1 is a schematic diagram of a configuration of a communication device according to an embodiment of the present application. [Figure 11] FIG. 1 is a schematic diagram of a configuration of a communication device according to an embodiment of the present application. [Figure 12] 1 is a schematic diagram of the configuration of an electronic device in an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0051] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application are described below clearly and completely with the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and are not all of them. Based on the embodiments of the present application, all other embodiments that a person skilled in the art can obtain without inventive efforts are included in the protection scope of the present application.

[0052] Sidelink communication can be divided into sidelink communication within network coverage, sidelink communication with partial network coverage, and sidelink communication outside network coverage, depending on the network coverage of the terminal performing the communication. Figure 1 is a schematic diagram of sidelink communication within network coverage in an embodiment of the present application, Figure 2 is a schematic diagram of sidelink communication with partial network coverage in an embodiment of the present application, Figure 3 is a schematic diagram of sidelink communication outside network coverage in an embodiment of the present application, and Figure 4 is a schematic diagram of other sidelink communication outside network coverage in an embodiment of the present application.

[0053] As shown in FIG. 1, in sidelink communication within a network coverage, all terminals performing sidelink communication are within the coverage range of the same network device, and can perform sidelink communication based on the same sidelink configuration by receiving signaling configured by the network device.

[0054] As shown in Fig. 2, in the case of sidelink communication in a partial network coverage, some of the terminals performing sidelink communication are located within the coverage range of the network device, and the terminals located within the coverage range of the network device can receive configuration signaling from the network device and perform sidelink communication according to the configuration of the base station. The terminals located outside the coverage range of the network device cannot receive the configuration signaling of the network device, and at this time, the terminals outside the coverage range of the network device determine the sidelink configuration based on pre-configuration and information transmitted on a physical sidelink broadcast channel (PSBCH) transmitted by terminals within the network coverage area to perform sidelink communication.

[0055] As shown in FIG. 3, in the case of sidelink communication outside the coverage of the network, all terminals performing sidelink communication are located outside the coverage of the network, so all terminals determine the sidelink configuration based on preset information and perform sidelink communication.

[0056] As shown in Fig. 4, in the case of sidelink communication outside the coverage of a network, multiple terminals are divided into one communication group, and one cluster header (CH) is set for the communication group. This cluster header terminal determines whether group member terminals join or leave, adjusts resources within the communication group, allocates transmission resources to group member terminals, and receives feedback information from group member terminals. Here, the cluster header terminal is sometimes called a central control node.

[0057] In the prior art, each terminal in a vehicle network system can be divided into multiple different communication groups, and the terminals in each communication group can directly communicate with each other in a D2D manner, as shown in Fig. 4. In each communication group, there is one cluster header terminal, which controls other terminals in the communication group, for example, by allocating transmission resources to other terminals and transferring data between terminals.

[0058] However, when multiple communication groups exist within one area and communicate using the same carrier, there is a problem of mutual interference between the communication groups.

[0059] In order to solve the above problem, the embodiment of the present application provides a communication method and device for solving the problem of mutual interference between communication groups in the prior art. The present invention configures different transmission resources for each communication group in a system, thereby realizing resource coordination between the communication groups and avoiding interference between the communication groups.

[0060] Next, application scenes of the present invention will be described.

[0061] The first applicable application scenario of the embodiment of the present application is the application scenario of a vehicle network system. Illustratively, multiple vehicles can form a communication group, and one vehicle is installed in each communication group as a cluster header terminal, and the cluster header terminal allocates transmission resources to communication devices in the group, and when multiple communication groups exist in the vehicle network system, it can coordinate resources between the multiple communication groups.

[0062] The second applicable application scenario of the embodiment of the present application is an application scenario of in-vehicle communication. For example, various terminals such as speakers, audio, cameras, mirrors, etc. are included in the vehicle. Here, the remote information processor (telematics box, T-BOX) in the vehicle can form a communication group with the microphone, audio, etc. in the vehicle, the vehicle body controller forms a communication group with the windows, doors, lights, seats, etc., the central control device in the vehicle forms a communication group with the microphone, speaker, rearview mirror, etc., and the smart key (PASSIVE Entry Passive Start, PEPS) forms a communication group with the door lock, key, etc.

[0063] The third applicable application scenario of the embodiment of the present application is an IoT application scenario. Illustratively, in a smart home scenario, terminals in a home or room have a communication function, and at least one communication group can be formed between terminals in a home. For example, a smartphone, a smart TV, and a CPE (consumer premise Equipment) can form a communication group. Terminals in the same home can form one communication group, and terminals in different homes are different communication groups.

[0064] The fourth available application scene of the embodiment of the present application is the application scene of a wearable device. Illustratively, in the scene of a wearable device, at least one communication group can be formed between the wearable device and other electronic devices. For example, the VR glasses worn on the head, the game handle held in the hand, the game console, and the smart TV can form one communication group, and the sports handle worn on the wrist and the user's smartphone can form one communication group. The wearable devices worn by the same user can belong to multiple communication groups.

[0065] In addition, the application scenario of the embodiments of the present application is not limited, and the communication method provided by the embodiments of the present application can also be applied to other communication systems having multiple communication groups.

[0066] In the following, the technical solutions of the embodiments of the present application are described in detail based on specific embodiments, taking the first communication device of the first communication group and the second communication device of the second communication group as examples. Some specific embodiments below can be combined with each other, and the same or similar concepts or processes may no longer be described in some embodiments.

[0067] 5 is a flowchart of a communication method in an embodiment of the present application. The embodiment of the present application is performed by a first communication device of a first communication group, and relates to a specific process of how the first communication device of the first communication group determines the transmission resources of the communication devices in the group. As shown in FIG. 5, the method includes the following steps: In S101, determine transmission resources of communication devices in a first communication group based on a first transmission resource set of the first communication group.

[0068] Wherein, the transmission resource sets between each communication group within the communication range of the first communication group are different, and the first transmission resource sets include information on time domain resources and / or information on frequency domain resources.

[0069] In the embodiments of the present application, how to determine the transmission resources of the communication devices in the first communication group based on the first transmission resource set is not limited. In some embodiments, the first transmission resource set indicates available transmission resources of the first communication group, and in other embodiments, the first transmission resource set indicates unavailable transmission resources of the first communication group.

[0070] In addition, the embodiments of the present application do not limit the type of transmission resource, and can be specifically set according to the communication method. Exemplarily, the transmission resource may be a sidelink communication transmission resource or another type of transmission resource.

[0071] Furthermore, the first transmission resource set may include various information such as time domain information, frequency domain information, and periodicity information. Exemplarily, the time domain information may be such as superframe information, radio frame information, and symbol information, and may be indicated by bitmap information, and the frequency domain information may include frequency domain start position information and length information, which may be used to determine the size of the frequency domain resource. The periodicity information is used to indicate a repetition period of the transmission resources allocated in the time domain.

[0072] Next, a method for determining a first transmission resource set for a first communication group will be described.

[0073] The embodiments of the present application provide three methods for determining the first transmission resource set of the first communication group: a static method, a semi-static method, and a dynamic method.

[0074] For example, when adopting a static manner, the first communication device of the first communication group can directly obtain the preset information of the first communication device of the first communication group, and then the first communication device of the first communication group determines a first transmission resource set based on the preset information of the first communication device of the first communication group.

[0075] Wherein, the preset information is pre-stored in a first communication device of a first communication group, and the preset information includes at least one of the number of terminals in the first communication group, the type of terminals in the first communication group, and the service attribute parameters of the first communication group.

[0076] In the present application, how the first transmission resource set is determined based on the pre-configured information is not limited, and may be set according to actual circumstances.

[0077] In one embodiment, the number of terminals, the type of terminals, and the transmission resources may have a corresponding relationship, and after obtaining the configuration information, the first communication device of the first communication group can determine a first transmission resource set based on the number of terminals and the type of terminals in the first communication group included in the pre-configured information.

[0078] In an embodiment, the service attribute parameters and the transmission resources may also have a corresponding relationship, and the first communication device of the first communication group can determine a first transmission resource set based on the service attribute parameters in the first communication group included in the pre-configured information after obtaining the configuration information.

[0079] In an embodiment, the pre-configured information may directly include the first transmission resource set, and the first communication device of the first communication group can directly obtain the first transmission resource set from the pre-configured information.

[0080] For example, when adopting a semi-static manner, the second communication device of the second communication group can send second instruction information to the first communication device of the first communication group, and the second instruction information is used to determine the first transmission resource set of the first communication group. Then, the first communication device of the first communication group determines the first transmission resource set based on the second instruction information.

[0081] Wherein, the second communication device of the second communication group is a master control terminal of each communication group, and allocates transmission resources for each communication group. The second indication information is carried in broadcast information, system information or radio resource control (RRC) signaling.

[0082] For example, when adopting a dynamic manner, a first communication device of a first communication group sends a resource change request to a second communication device of a second communication group, the resource change request is used to request, change or cancel transmission resources of the first communication group, and the resource change request includes information of the first communication group. Then, the second communication device of the second communication group determines available transmission resources of the first communication group based on the information of the first communication group, and sends second indication information to the first communication device of the first communication group, the second indication information is used to determine a first transmission resource set of the first communication group. Finally, the first communication device of the first communication group determines the first transmission resource set based on the second indication information.

[0083] Here, the information of the first communication group includes at least one of identification information of the first communication group, identification information of the first communication device of the first communication group, the number of terminals of the first communication group, and service attribute parameters of the first communication group, The service attribute parameters of the first communication group include at least one of data budget size, packet transmission frequency, transmission reliability, transmission rate, and transmission delay.

[0084] In S102, send first indication information to the communication devices in the first communication group, where the first indication information is used to indicate transmission resources of the communication devices in the first communication group.

[0085] In this step, the first communication device in the first communication group determines the transmission resources of the communication devices in the first communication group, and then sends first indication information to the communication devices in the first communication group to indicate the transmission resources of the communication devices in the first communication group.

[0086] In the embodiment of the present application, how to transmit the first indication information to the communication devices in the group is not limited, for example, the first communication device of the first communication group can inform the communication devices in the group of available transmission resources via broadcast information, system information, RRC signaling, control signaling, etc. Here, the control signaling may be, for example, Downlink Control Information (DCI) or Sidelink Control Information (SCI), and the RRC signaling may be, for example, PC5-RRC signaling.

[0087] The communication method in the embodiment of the present application is applied to a first communication device of a first communication group, and determines the transmission resources of the communication devices in the first communication group based on the first transmission resource set of the first communication group, and the transmission resource sets between each communication group within the communication range of the first communication group are different. Then, send first indication information to the communication devices in the first communication group, and the first indication information is used to indicate the transmission resources of the communication devices in the first communication group. Compared with the prior art, since the transmission resource sets between each communication group are different, resource coordination between each communication group can be realized and interference between the communication groups can be avoided. In addition to the above embodiments, to illustrate, when the number and service type of terminals in a communication group are known, the first transmission resource set can be determined in a static manner.

[0088] For example, for an in-vehicle short-range communication system, all wireless communication functions supported by the vehicle are known, such as noise reduction function, seat wireless control function, wireless ignition function, etc., all corresponding to the same or different communication groups. Here, the type and number of terminals in each communication group are also known, and the service type, data size, frequency, etc. of data transmitted by the communication group are also known. In this case, transmission resources can be allocated to each communication group according to the preset information, and the corresponding transmission resource set can be determined.

[0089] The method for determining the first transmission resource set by pre-configuration is specifically described below. Figure 6 is a flow diagram of another communication method in an embodiment of the present application. As shown in Figure 6, the execution body of this embodiment is a first communication device of a first communication group, and the method includes the following steps: In S201, pre-configured information of a first communication device in a first communication group is obtained.

[0090] In this step, the pre-configured information may be pre-stored in a memory of the first communication device of the first communication group, and the first communication device of the first communication group can retrieve the pre-configured information of the first communication device of the first communication group from the memory before the first communication device of the first communication group performs communication.

[0091] Here, the preset information includes at least one of the number of terminals in the first communication group, the type of terminals in the first communication group, and the service attribute parameters of the first communication group.

[0092] In addition, the communication device according to the embodiment of the present application may be a terminal, such as a mobile phone or an in-vehicle terminal, or may be another device having a specific communication function, such as a vehicle or a wireless ignition device in a vehicle.

[0093] In S202, a first transmission resource set is determined based on pre-configured information of a first communication device of a first communication group.

[0094] In this step, the first communication device of the first communication group can obtain the pre-configured information of the first communication device of the first communication group, and then determine a first transmission resource set based on the pre-configured information of the first communication device of the first communication group.

[0095] In the present application, how the first transmission resource set is determined based on the preset information is not limited, and may be set according to actual circumstances.

[0096] In one embodiment, the number of terminals, the type of terminals, and the transmission resources may have a corresponding relationship, and after obtaining the configuration information, the first communication device of the first communication group can determine a first transmission resource set based on the number of terminals and the type of terminals in the first communication group included in the pre-configured information.

[0097] In an embodiment, the service attribute parameters and the transmission resources have a corresponding relationship, and after a first communication device in a first communication group obtains the configuration information, the first communication device can determine a first transmission resource set based on the service attribute parameters in the first communication group included in the pre-configured information.

[0098] In an embodiment, the pre-configured information directly includes the first transmission resource set, and the first communication device of the first communication group can directly obtain the first transmission resource set from the pre-configured information.

[0099] Wherein, the first transmission resource set includes information on time domain resources and / or information on frequency domain resources. In one embodiment, the first communication device of the first communication group can determine the time domain resource information based on the preset information, and the time domain resource information can include superframe, radio frame, or symbol information. In another embodiment, the first communication device of the first communication group can determine the frequency domain resource information based on the preset information.

[0100] For example, FIG. 7 is a diagram showing the structure of symbol information in a radio frame including eight Orthogonal Frequency Division Multiplexing (OFDM) codes in one radio frame for an in-vehicle short-range communication system. The eight OFDM symbols are divided into C-link symbols and T-link symbols. Here, the C-link symbol is a link through which a cluster header terminal transmits data to a communication device in a group, and the T-link is a link through which a communication device in a group transmits data to a cluster header terminal. The C-link symbol is located at the beginning of the radio frame, and the T-link symbol is located at the end of the radio frame. There is a guard period (GP) between the C-link symbol and the T-link symbol, which is usually used for receive-transmit conversion or transmit-receive conversion. When there are two communication groups, in one radio frame, the first communication group can be assigned one C-link symbol and one T-link symbol, and the second communication group can be assigned two C-link symbols and two T-link symbols, and the remaining one C-link symbol and one T-link symbol can be reserved for use by another communication group or to introduce another wireless communication system, or the reserved transmission resources can be used for a new wireless communication system.

[0101] In S203, determine transmission resources for communication devices in the first communication group based on a first transmission resource set of the first communication group, where the transmission resource sets between each communication group within a communication range of the first communication group are different.

[0102] In S204, first indication information is sent to the communication devices in the first communication group, where the first indication information is used to indicate transmission resources of the communication devices in the first communication group.

[0103] The technical terms, technical effects, technical features, and optional embodiments of S203-204 can be understood with reference to S101-S102 shown in FIG. 5, and the overlapping contents will not be described here.

[0104] In the present application, a first communication device of a first communication group determines a first transmission resource set based on pre-configured information, so that the first communication device of the first communication group can determine available transmission resources, and each communication group has different transmission resources, thereby realizing resource coordination between each communication group and avoiding interference between the communication groups.

[0105] In the communication method shown in Fig. 6, the preset information in each communication group is preconfigured, so the transmission resources cannot be changed once they are preconfigured. In this case, if the number of terminals in a communication group changes, the transmission resources required for the communication group will also change accordingly, and the preconfigured transmission resources may not be able to meet the communication needs of the communication group.

[0106] In addition to the above embodiment, the present application can adopt a semi-static manner to avoid that the pre-configured transmission resources cannot meet the communication requirements of the communication group. The following is a detailed description of a method for determining a first transmission resource set in a semi-static manner. Figure 8 is a signaling interaction diagram of a communication method in an embodiment of the present application. As shown in Figure 8, the method includes the following steps:

[0107] In S301, a second communication device of a second communication group sends second instruction information to a first communication device of a first communication group, and the second instruction information is used to determine a first transmission resource set of the first communication group, and the transmission resource sets between each communication group within a communication range of the first communication group are different.

[0108] At S302, a first communication device of a first communication group determines a first transmission resource set based on the second indication information.

[0109] Here, the second indication information may be carried in broadcast information, system information or radio resource control (RRC) signaling.

[0110] For example, one system includes four communication groups, i.e., first to fourth communication groups. A second communication device of a second communication group indicates the transmission resources of the four communication groups through system information. The system information includes four information domains corresponding to the indication information of the transmission resources of the four communication groups, respectively. For example, a second indication information indicating a first transmission resource set of the first communication group is transmitted to a first communication device of the first communication group. Before performing intra-group communication, the first communication device of the first communication group first obtains the first transmission resource set from the second indication information, and then the first communication device of the first communication group can allocate the transmission resources in the transmission resource set to the communication devices in the group.

[0111] In one embodiment, a first communication device of a first communication group searches for a synchronization signal and broadcast information from a second communication device of a second communication group, and the first communication device of the first communication group can directly obtain the second instruction information from the broadcast information.

[0112] However, in other embodiments, the second communication devices in the second communication group may update the system information to update the transmission resource set for each communication group.

[0113] At S303, a first communication device of a first communication group determines transmission resources of the communication devices in the first communication group based on a first transmission resource set of the first communication group, and the transmission resource sets between each communication group within a communication range of the first communication group are different.

[0114] At S304, a first communication device in the first communication group sends first indication information to the communication devices in the first communication group, where the first indication information is used to indicate transmission resources of the communication devices in the first communication group.

[0115] The technical terms, technical effects, technical features, and optional embodiments of S303-S304 can be understood with reference to S101-S102 shown in FIG. 5, and the overlapping contents will not be described here.

[0116] In this application, the second communication device of the second communication group sends second instruction information to the first communication device of the first communication group, and then the first communication device of the first communication group determines the first transmission resource set based on the second instruction information. The transmission resources can be semi-statically configured for each communication group by broadcasting the transmission resources available to each communication group via the cluster header terminal of a communication group, and the transmission resource set of each communication group can be updated by updating the system information.

[0117] In addition to the above embodiments, the present application further provides that a cluster header terminal of one communication group can be used as a control terminal of all communication groups to dynamically allocate transmission resources to all communication groups.

[0118] It should be noted that the control terminal of all the above communication groups may be the second communication device of the second communication group in the present application. Illustratively, in the case of an in-vehicle short-range communication system, there are multiple communication groups in the vehicle, but each communication group does not always have data transmission. For example, the data transmission of communication groups such as wireless fire extinguishing system, cockpit control system, etc. is triggered by an event, while in the noise reduction system communication group, as long as the vehicle is in an ignition state, it is always in operation, and it is guaranteed to reduce the noise inside the vehicle in real time. Therefore, the cluster header terminal of the noise reduction system communication group can be the control terminal of all the communication groups, that is, the second communication device of the second communication group in the present application. Then, the noise reduction system communication group can allocate transmission resources to other communication groups.

[0119] The method for determining the first transmission resource set in a dynamic manner will now be described in detail. Figure 9 is a signaling interaction diagram of another communication method in an embodiment of the present application. As shown in Figure 9, the method includes the following steps:

[0120] In S401, a first communication device of a first communication group sends a resource change request to a second communication device of a second communication group, the resource change request is used to request, change or cancel a transmission resource of the first communication group, and the resource change request includes information of the first communication group.

[0121] Here, the resource change request may be used to request a transmission resource of the first communication group, or may be used to change the transmission resource of the first communication group, or may be used to cancel the transmission resource of the first communication group, and the embodiments of the present application are not limited thereto.

[0122] In one embodiment, when a first communication device of a first communication group performs intragroup communication but does not determine available transmission resources, the resource change request is used to send a resource change request to a second communication device of a second communication group to request transmission resources for the first communication group. When a first communication device of a first communication group determines that it does not need to perform intragroup communication, the resource change request is sent to a second communication device of the second communication group to request cancellation of transmission resources for the first communication group. When a first communication device of a first communication group determines that the number of communication devices in the group has changed or that there are insufficient transmission resources in the group, the resource change request is sent to a second communication device of the second communication group to request a change in transmission resources for the first communication group.

[0123] In an embodiment, before a first communication device of a first communication group sends a resource modification request to a second communication device of a second communication group, the first communication device of the first communication group needs to access the second communication device of the second communication group, for example, the first communication device of the first communication group searches for a synchronization signal and broadcast information from the second communication device of the second communication group, and then the first communication device of the first communication group accesses the communication group of the second communication device of the second communication group with the random access resource allocated by the second communication device of the second communication group.

[0124] At S402, a second communication device of the second communication group determines available transmission resources of the first communication group based on information of the first communication group.

[0125] In this step, after a second communication device of the second communication group receives a resource change request from a first communication device of the first communication group, it determines available transmission resources of the first communication group based on information of the first communication group.

[0126] Here, the information of the first communication group includes at least one of identification information of the first communication group, identification information of the first communication device of the first communication group, the number of terminals of the first communication group, and service attribute parameters of the first communication group, The service attribute parameters of the first communication group include at least one of data budget size, packet transmission frequency, transmission reliability, transmission rate, and transmission delay.

[0127] The embodiment of the present application does not limit how the available transmission resources of the first communication group are determined, and any suitable resource allocation scheme can be adopted.

[0128] In addition, when the second communication device of the second communication group determines the available transmission resources of the first communication group, the first transmission resource set may be generated using the available transmission resources of the first communication group, or the first transmission resource set may be generated using the unavailable transmission resources of the first communication group, and the embodiments of the present application are not limited thereto.

[0129] In S403, a second communication device of the second communication group sends second instruction information to a first communication device of the first communication group, and the second instruction information is used to determine a first transmission resource set of the first communication group, and the transmission resource sets between each communication group within a communication range of the first communication group are different.

[0130] At S404, the first communication device of the first communication group determines a first transmission resource set based on the second indication information.

[0131] At S405, a first communication device of the first communication group determines transmission resources of the communication devices in the first communication group based on a first transmission resource set of the first communication group, and the transmission resource sets between each communication group within the communication range of the first communication group are different.

[0132] At S406, a first communication device in the first communication group sends first indication information to the communication devices in the first communication group, where the first indication information is used to indicate transmission resources of the communication devices in the first communication group.

[0133] The technical terms, technical effects, technical features, and optional embodiments of S403-S406 can be understood with reference to S301-S304 shown in FIG. 8, and the overlapping contents will not be described here.

[0134] At S407, a second communication device of the second communication group updates a second transmission resource set of the second communication group based on the first transmission resource set.

[0135] At S408, a second communication device in the second communication group sends third instruction information to the communication devices in the second communication group, and the third instruction information is used to indicate the changed transmission resources to the communication devices in the second communication group.

[0136] In this step, after allocating transmission resources for the first communication group, the second communication device of the second communication group may update a second transmission resource set of the second communication group based on the first transmission resource set to avoid the communication device in the second communication group using the transmission resources allocated for the first communication group.

[0137] It should be noted that in any embodiment, the control terminals of all communication groups may not only be cluster header terminals of a communication group, but also external terminals that do not belong to each communication group. The cluster header terminals of each communication group send resource change requests to the external terminals, and allocate transmission resources to terminals in each communication group according to the allocated transmission resources.

[0138] In the present invention, by dynamically allocating transmission resources to each communication group as needed, the transmission resources can be flexibly multiplexed among the communication groups, thereby improving resource utilization.

[0139] The communication method in the embodiment of the present application is applied to a first communication device of a first communication group, and determines the transmission resource of the communication device in the first communication group according to the first transmission resource set of the first communication group, and the transmission resource set between each communication group within the communication range of the first communication group is different. Then, send first indication information to the communication device in the first communication group, and the first indication information is used to indicate the transmission resource of the communication device in the first communication group. Compared with the prior art, since the transmission resource set between each communication group is different, resource coordination between each communication group can be realized and interference between the communication groups can be avoided.

[0140] Those skilled in the art will appreciate that all or some of the steps for realizing the above-described method embodiments can be performed by hardware associated with program information stored in a computer-readable storage medium, which when executed executes the steps comprising the above-described method embodiments, and the aforementioned storage medium includes various media capable of storing program code, such as a ROM, a RAM, a magnetic disk, or an optical disk.

[0141] 10 is a schematic diagram of a communication device according to an embodiment of the present application. The communication device can be realized by software, hardware, or a combination of both to execute the communication method on the first communication device side of the first communication group according to the embodiment described above.

[0142] As shown in FIG. 10, the communication device 500 includes a processing module 501, a transmitting module 502 and a receiving module 503.

[0143] The processing module is configured to determine transmission resources of the communication devices in the first communication group based on a first transmission resource set of the first communication group, the transmission resource sets between each communication group within a communication range of the first communication group being different; The sending module is configured to send first indication information to the communication devices in the first communication group, where the first indication information is used to indicate transmission resources of the communication devices in the first communication group.

[0144] In an alternative embodiment, the processing module is further configured to obtain pre-configured information of the communication device and determine the first transmission resource set based on the pre-configured information of the communication device.

[0145] In an alternative embodiment, the pre-defined information includes at least one of the following: the number of terminals in the first communication group, the type of terminals in the first communication group, and service attribute parameters of the first communication group.

[0146] In an alternative embodiment, in a communication device, The receiving module is configured to receive second indication information transmitted by a second communication device of a second communication group, the second indication information including available transmission resources of the first communication group; The processing module is further configured to determine the first transmission resource set based on the second indication.

[0147] In alternative embodiments, the second indication information is carried in broadcast information, system information, radio resource control (RRC) signaling or control signaling.

[0148] In an alternative embodiment, the receiving module is further configured to receive a synchronization signal and broadcast information from a second communication device of the second communication group.

[0149] In an optional embodiment, the sending module is further configured to send a resource change request to a second communication device of the second communication group, the resource change request being used to request, change or cancel transmission resources of the first communication group, and information of the first communication group being included in the resource change request.

[0150] In an optional embodiment, the information of the first communication group includes at least one of an identification information of the first communication group, an identification information of a first communication device of the first communication group, a number of terminals in the first communication group, and a service attribute parameter of the first communication group.

[0151] In an alternative embodiment, the service attribute parameters of the first communication group include at least one of a data budget size, a packet transmission frequency, a transmission reliability, a transmission rate, and a transmission delay.

[0152] In an alternative embodiment, the first transmission resource set is used to indicate available transmission resources of the first communication group or unavailable transmission resources of the first communication group.

[0153] In an alternative embodiment, the first transmission resource set comprises time domain resource information and / or frequency domain resource information.

[0154] The communication device in the embodiment of the present application can perform the operation of the communication method on the first communication device side of the first communication group in the above-mentioned embodiment, and the realization principle and technical effect are similar, so they will be omitted here.

[0155] 11 is a schematic diagram of a communication device in an embodiment of the present application. The communication device can be realized by software, hardware, or a combination of both to perform the communication method of the second communication device side of the second communication group in the above embodiment. As shown in FIG. 11, the communication device 600 includes a sending module 601, a receiving module 602, and a processing module 603.

[0156] The transmitting module 601 is configured to transmit second instruction information to a first communication device of a first communication group, the second instruction information being used to determine a first transmission resource set of the first communication group, and the transmission resource sets between each communication group within a communication range of the first communication group being different.

[0157] In alternative embodiments, the second indication information is carried in broadcast information, system information, radio resource control (RRC) signaling or control signaling.

[0158] In an alternative embodiment, the communication device 600 further includes a receiving module 602; The receiving module 602 is configured to receive a resource change request sent by a first communication device of a first communication group, the resource change request being used to request, change or cancel a transmission resource of the first communication group, and the resource change request includes information of the first communication group; The processing module 603 is configured to determine available transmission resources of the first communication group based on the information of the first communication group.

[0159] In an optional embodiment, the information of the first communication group includes at least one of an identification information of the first communication group, an identification information of a first communication device of the first communication group, a number of terminals in the first communication group, and a service attribute parameter of the first communication group.

[0160] In an alternative embodiment, the service attribute parameters of the first communication group include at least one of a data budget size, a packet transmission frequency, a transmission reliability, a transmission rate, and a transmission delay.

[0161] In an alternative embodiment, the processing module 603 is further configured to update a second transmission resource set of the second communication group based on the first transmission resource set; The transmitting module 601 is further configured to transmit third instruction information to the communication devices in the second communication group, where the third instruction information is used to indicate the changed transmission resources to the communication devices in the second communication group.

[0162] In an alternative embodiment, the first transmission resource set is used to indicate available transmission resources of the first communication group or unavailable transmission resources of the first communication group.

[0163] In an alternative embodiment, the first transmission resource set comprises time domain resource information and / or frequency domain resource information.

[0164] The communication device in the embodiment of the present application can perform the operation of the communication method on the second communication device side of the second communication group in the above-mentioned embodiment, and the realization principle and technical effect are similar, so they will be omitted here.

[0165] FIG. 12 is a block diagram of an electronic device provided by an embodiment of the present application. As shown in FIG. 12, the electronic device includes a processor 71 such as a CPU, a memory 72, a receiver 73, and a transmitter 74, the receiver 73 and the transmitter 74 are coupled to the processor 71, the processor 71 controls the receiving operation of the receiver 73, and the processor 71 controls the transmitting operation of the transmitter 74. The memory 72 may include a high-speed RAM memory, or may include a non-volatile memory NVM, such as at least one disk memory, and the memory 72 may store various information for completing various processing functions and realizing the method steps of the embodiment of the present application. Optionally, the electronic device according to the embodiment of the present application may further include a power supply 75, a communication bus 76, and a communication port 77. The receiver 73 and the transmitter 74 may be integrated into the transceiver of the electronic device, or may be independent transmitting and receiving antennas on the electronic device. The communication bus 76 is used to realize communication connection between the elements. The communication port 77 is for realizing connection communication between the electronic device and other peripheral devices.

[0166] In an embodiment of the present application, the memory 72 is used to store computer-executable program code including information, and when the processor 71 executes the information, the information causes the processor 71 to perform a processing operation on the side of the first communication device of the first communication group in the above-mentioned method embodiment, causes the transmitter 74 to perform a transmitting operation on the side of the first communication device of the first communication group in the above-mentioned method embodiment, and causes the receiver 73 to perform a receiving operation on the side of the first communication device of the first communication group in the above-mentioned method embodiment, and the realization principles and technical effects thereof are similar and are omitted here.

[0167] Alternatively, when the processor 71 executes the information, the information causes the processor 71 to perform the processing operation of the second communication device side of the second communication group in the above-mentioned method embodiment, causes the transmitter 74 to perform the transmitting operation of the second communication device side of the second communication group in the above-mentioned method embodiment, and causes the receiver 73 to perform the receiving operation of the second communication device side of the second communication group in the above-mentioned method embodiment, the realization principles and technical effects of which are similar and are omitted here.

[0168] An embodiment of the present application also provides a communication system including at least one first communication group and a second communication group for performing the above-mentioned communication method.

[0169] An embodiment of the present application also provides a chip including a processor and an interface. The interface is used for inputting and outputting data or instructions to be processed by the processor. The processor is used for executing the method provided in the above-mentioned method embodiment. The chip can be applied to a first communication device of a first communication group or a second communication device of a second communication group.

[0170] The present application also provides a computer-readable storage medium, which may include a medium capable of storing various program codes, such as a USB disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, in which program information is specifically stored and which is used for the above-mentioned communication method.

[0171] An embodiment of the present application also provides a program for performing the communication method in the above method embodiment when executed by a processor.

[0172] Also, embodiments of the present application provide a program product, such as a computer-readable storage medium, having stored thereon instructions that, when running on a computer, cause the computer to perform the communication method in the above method embodiments.

[0173] The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, they may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded into a computer and executed, the flow or function according to the embodiments of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or may be transmitted from one computer-readable storage medium to another, for example, the computer instructions are transferred from one website site, computer, service terminal, or data center to another website site, computer, service, or data center via wire (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)), or wireless (e.g., infrared, radio, microwave, etc.) such as infrared, radio, microwave, etc. The computer-readable storage medium may be any available medium accessible by a computer, or may include a data storage device such as a service terminal, data center, etc., in which one or more available media are integrated. The usable medium can be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0174] Finally, the above embodiments are only used to explain the technical aspects of the present application, and are not intended to limit the same. The present application has been described in detail with reference to the above embodiments. However, a person skilled in the art may modify the technical solutions described in the above embodiments or equally replace some or all of the technical features thereof, and these modifications or replacements do not cause the essence of each technical approach to depart from the scope of the technical approach of each embodiment of the present application.

Claims

1. A communication method applied to a second communication device of a second communication group, comprising: sending second indication information to a first communication device of a first communication group, the second indication information including available transmission resources of the first communication group, and a transmission resource set between each communication group within a communication range of the first communication group being different; Transmitting the second indication information to the first communication device of the first communication group includes: transmitting a synchronization signal and broadcast information to a first communication device of the first communication group, the second indication information being carried in the broadcast information. A communication method comprising:

2. In the in-vehicle short-range communication system having the first communication group and the second communication group, One radio frame includes eight orthogonal frequency division multiplexing OFDM symbols, and the eight OFDM symbols are divided into a C link symbol and a T link symbol. A cluster header in the first communication group or the second communication group transmits data to a communication device in the group using a C link symbol, and the communication devices in the first communication group and the second communication group transmit data to the cluster header using a T link symbol.

2. The communication method according to claim 1 .

3. The C link symbol is located at the beginning of a radio frame, the T link symbol is located at the end of a radio frame, and a guard period (GP) is located between the C link symbol and the T link symbol.

3. The communication method according to claim 2.

4. 1. A communication method applied to a first communication device of a first communication group, comprising: determining transmission resources for communication devices in the first communication group based on a first transmission resource set of the first communication group; transmitting first indication information to communication devices in the first communication group; A transmission resource set between each communication group within a communication range of the first communication group is different, and the first indication information is used to indicate a transmission resource of a communication device in the first communication group; The method further comprises: receiving second indication information transmitted by a second communication device of a second communication group; determining the first transmission resource set based on the second indication; the second indication includes available transmission resources of the first communication group; Receiving second indication information transmitted by a second communication device of a second communication group includes: receiving a synchronization signal and broadcast information transmitted by a second communication device of the second communication group, the second indication information being carried in the broadcast information. A communication method comprising:

5. In the in-vehicle short-range communication system having the first communication group and the second communication group, One radio frame includes eight orthogonal frequency division multiplexing OFDM symbols, and the eight OFDM symbols are divided into a C link symbol and a T link symbol. A cluster header in the first communication group or the second communication group transmits data to a communication device in the group using a C link symbol, and the communication devices in the first communication group and the second communication group transmit data to the cluster header using a T link symbol.

5. The communication method according to claim 4.

6. A communication device of a second communication group, the communication device including a transmitting module, The transmitting module is configured to transmit second indication information to a first communication device of a first communication group, the second indication information including available transmission resources of the first communication group, and a transmission resource set between each communication group within a communication range of the first communication group is different; The transmitting module transmits a synchronization signal and broadcast information to a first communication device of the first communication group, and the second indication information is carried in the broadcast information. A communication device comprising:

7. A communication device including a processing module, a transmitting module, and a receiving module, The processing module is configured to determine transmission resources for communication devices in a first communication group based on a first transmission resource set of the first communication group, where the transmission resource sets between each communication group within a communication range of the first communication group are different; The sending module is configured to send first indication information to communication devices in the first communication group, the first indication information being used to indicate transmission resources of communication devices in the first communication group. The receiving module is configured to receive second indication information transmitted by a second communication device of a second communication group, the second indication information including available transmission resources of the first communication group; The processing module is configured to determine the first transmission resource set based on the second indication; The receiving module is configured to receive a synchronization signal and broadcast information transmitted by a second communication device of the second communication group, the second indication information being carried in the broadcast information. A communication device comprising:

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