WO2023024957A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2023024957A1
WO2023024957A1 PCT/CN2022/112603 CN2022112603W WO2023024957A1 WO 2023024957 A1 WO2023024957 A1 WO 2023024957A1 CN 2022112603 W CN2022112603 W CN 2022112603W WO 2023024957 A1 WO2023024957 A1 WO 2023024957A1
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WIPO (PCT)
Prior art keywords
resource
frequency
information
terminal device
indicate
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PCT/CN2022/112603
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English (en)
Chinese (zh)
Inventor
黎超
张天虹
杨帆
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华为技术有限公司
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Publication of WO2023024957A1 publication Critical patent/WO2023024957A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the new radio new radio
  • mode-2 the terminal device at the sending end listens to resources within the listening time window, and selects resources for communication within the resource selection window according to the listening results.
  • the present application provides a communication method, and the execution subject of the method may be a terminal device, or may be a chip or a circuit.
  • the method includes: receiving first information on a first frequency, the first information is used to indicate the first resource of the first terminal device on a second frequency, and the second frequency is higher than the first frequency; determining the second resource based on the first resource , and use the determined second resource to send data on the second frequency, where the second resource is used to send data on the second frequency.
  • the first information includes indication information of frequency domain resources of the first resource, and the frequency domain resources are determined based on the subband size configured on the second frequency.
  • the third resource when the second resource is determined based on the first resource, the third resource may be determined in the candidate resource set of the second frequency based on the first resource, and the third resource is excluded from the candidate resource set to obtain the first resource set .
  • a second resource is determined in the first set of resources. In this way, the measurement time and measurement power consumption at the second frequency can be greatly reduced.
  • the candidate beams for resource selection may be increased, thereby increasing the reliability of the selected resources in the space direction.
  • the first information includes information indicating the first resource and at least one of the following items: beam direction information of the transmission beam of the first terminal device on the second frequency, data transmission on the first resource Type indication information, priority information of data on the first resource, location information of the first terminal device, source identifier, and destination identifier.
  • the data transmission mode when the data transmission mode is unicast, it corresponds to the first preset state value of the beam indication information; or, when the data transmission mode is multicast, it corresponds to the second preset state value of the beam indication information ; or, when the data transmission mode is broadcast, it corresponds to the third preset state value of the beam indication information.
  • the second terminal device determines the service type of the first terminal device.
  • the center frequency value of the first frequency is lower than the first preset frequency value, and the center frequency value of the second frequency is higher than the second preset frequency value; or, the center frequency value of the first frequency is lower than The center frequency value of the second frequency; or, the first frequency is the first carrier, and the second frequency is the second carrier; or, the first frequency is the first bandwidth part, and the second frequency is the second bandwidth part; or, the first The frequency is the first resource pool, and the second frequency is the second resource pool; or, the first frequency is the first subchannel, and the second frequency is the second subchannel; or, the first frequency is the first resource block, and the second frequency is the second resource block.
  • the first information includes information indicating the first resource and at least one of the following items: beam indication information of the transmission beam of the first terminal device on the second frequency, communication transmission on the first resource Type indication information, priority information of data on the first resource, location information of the first terminal device, source identifier, and destination identifier.
  • the method further includes: sending fifth information on the first frequency, where the fifth information is used to indicate that first-level control information carrying the fifth information is used to indicate the first information.
  • the first field carries fifth information; or, if the value of the second field is 29 or 30 or 31, the second field carries fifth information; or , if the value of the third field is 11, the third field carries fifth information; or, if the value of the reserved field is greater than zero, the reserved field carries fifth information.
  • sending the first information on the first frequency includes: when a first condition is met, sending the first information on the first frequency, where the first condition includes one or more of the following : receiving configuration information, the configuration information is used to instruct the first terminal device to enable the sending of the first information on the first frequency; it is detected on the second frequency that the channel occupancy rate on the resource pool of the second frequency is higher than the first threshold ; On the second frequency, it is detected that the channel busy ratio on the resource pool of the second frequency is higher than the second threshold; on the second frequency, it is detected that the channel quality on the resource pool of the second frequency is lower than the third threshold; the priority of the data higher than the fourth threshold; the data response message includes at least one NACK; the distance between the first terminal device and the second terminal device is greater than the fifth threshold; the first terminal device is configured with an energy-saving transmission mode.
  • Resource utilization can be improved through the above method.
  • the first information includes beam indication information
  • the beam indication information is used to indicate the direction of the transmission beam of the second terminal device in the preset coordinate axis.
  • the first beam is determined according to at least one of the following: the transmission beam of the second terminal device on the second frequency; the transmission beam of the first terminal device on the second frequency; the transmission beam of the first terminal device on the second frequency; The location information and the location information of the third terminal device; the source identification and/or destination identification of the first information; the transmission type of the communication on the first resource; the beam direction of the transmission beam of the second terminal device on the second frequency;
  • the beam set, the candidate beam set includes at least one beam; wherein, the third terminal device is a terminal device that communicates with the first terminal device on the second frequency. In this way, the accuracy of measurement can be improved.
  • excluding the third resource from the candidate resource set includes: when the signal quality corresponding to the first information exceeds a preset threshold, excluding the third resource from the candidate resource set. In this way, resource utilization can be improved.
  • the preset threshold is determined according to the first beam and/or the second beam, and the second beam is a sending beam of the second terminal device on the second frequency.
  • the transmission type corresponding to the communication on the first resource is multicast or unicast; the data transmission type is broadcast. Because when performing unicast or multicast transmission, the first terminal device must transmit with a certain beam direction or a subset of beam directions; while performing broadcast transmission, the first terminal device performs omnidirectional beam or beam scanning transmission.
  • the beam directions of different transmission modes are different, and frequency division multiplexing on the same time slot cannot be achieved. Therefore, the time slot occupied by unicast or multicast transmission can be directly filtered out by broadcast transmission. Therefore, the collision problem when different transmission types are determined to receive and send beams is avoided.
  • the method further includes: using any one of the following methods to determine the resource occupancy information: performing resource occupancy information measurement on the resource pool for at least one beam in the candidate beam set, and obtaining the measurement of at least one beam Information, obtain resource occupancy information according to the average value of measurement information of at least one beam; measure resource occupancy information on at least one beam in the candidate beam set on the resource pool to obtain measurement information of at least one beam, and then according to at least one beam Obtain resource occupancy information from the measurement information of each beam in the resource pool; measure resource occupancy information on the resource pool for beams that are expected to be sent or received, obtain beam measurement information, and then obtain resource occupancy information based on the beam measurement information.
  • FIG. 4 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 13 is a schematic diagram of a scene according to an embodiment of the present application.
  • FIG. 15 is a schematic diagram of a beam projection according to an embodiment of the present application.
  • the various terminal devices described above if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be considered as vehicle-mounted terminal devices, and the vehicle-mounted terminal devices are also called on-board units (OBU) for example. .
  • OBU on-board units
  • the device for realizing the function of the terminal device may be the terminal device, or may be a device capable of supporting the terminal device to realize the function, such as a chip system, and the device may be installed in the terminal device.
  • the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.
  • the device for realizing the function of the network device may be a network device, or a device capable of supporting the network device to realize the function, such as a chip system, and the device may be installed in the network device.
  • the technical solution provided by the embodiment of the present application the technical solution provided by the embodiment of the present application is described by taking the network device as an example for realizing the function of the network device.
  • V2X specifically includes direct communication between vehicles (vehicle-to-vehicle, V2V), vehicles and roadside infrastructure (vehicle-to-infrastructure, V2I), vehicles and pedestrians (vehicle-to-pedestrian, V2P), and Several application requirements such as vehicle-to-network (V2N) communication interaction.
  • V2V refers to the communication between vehicles
  • V2P refers to the communication between vehicles and people (including pedestrians, cyclists, drivers, or passengers)
  • V2I refers to the communication between vehicles and network equipment, such as RSU, in addition
  • V2N refers to the communication between the vehicle and the base station/network.
  • system and “network” in the embodiments of the present application may be used interchangeably.
  • “At least one” means one or more, and “plurality” means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the contextual objects are an “or” relationship.
  • “At least one of the following” or similar expressions refer to any combination of these items, including any combination of single or plural items.
  • terminal devices use non-directional beams (such as 120-degree, 360-degree wide beams) for transmission and reception, as shown in Figure 2, while in the high-frequency millimeter-wave scenario
  • the terminal device uses a directional beam (for example, narrow beams such as 10 degrees, 15 degrees, and 20 degrees) to transmit and receive, as shown in FIG. 3 .
  • the directional beam is very different from the non-directional beam.
  • the signal transmitted by the transmitter through the directional beam is transmitted to a specific beam direction; when the receiver receives the signal in the corresponding receiving direction through the directional beam Signal.
  • adjacent terminal devices may not receive signals from adjacent terminal devices due to the different beam directions used.
  • adjacent terminal devices will receive signals from adjacent terminal devices. Therefore, after the introduction of the directional beam, how the terminal device selects resources is an urgent problem to be solved.
  • the technical solutions provided by the embodiments of the present application can be applied to protocol frameworks such as LTE, NR, or 6G. Specifically, it can be applied to D2D scenarios, such as V2X, LTE-V, V2V, etc. in the Internet of Vehicles scene.
  • the Internet of Vehicles scene can include but not limited to intelligent driving, intelligent networked vehicles, etc.
  • FIGS. 4-7 are schematic diagrams of a communication system in which UE1 and UE2 communicate through a sidelink.
  • UE1 and UE2 may communicate directly (as shown in FIGS. 4-6 ), or communicate through a relay node UE3 (as shown in FIG. 7 ).
  • UE1 may also connect to a network device through UE2 to perform communication. Or, conversely, the network device can communicate with UE1 through UE2.
  • the sidelink communication between UE1 and UE2 can be performed under network coverage or without network coverage.
  • the terminal equipment in Figures 4-7 is an example of a vehicle-mounted terminal equipment or a car, a terminal RSU, a telematics BOX (TBOX), a chip, etc., but the terminal equipment in this embodiment of the application is not limited to this.
  • the transceiver module 820 may be an input-output interface of a chip (such as a baseband chip), and the processing module 810 may be a processor of the system-on-a-chip, and may include one or more central processing units.
  • processing module 810 in the embodiment of the present application may be implemented by a processor or a processor-related circuit component
  • transceiver module 820 may be implemented by a transceiver or a transceiver-related circuit component.
  • the processing module 810 may be used to perform all operations performed by the terminal device in the embodiment of the present application except for the transceiving operation, such as processing operations, and/or other operations for supporting the technologies described herein.
  • the process includes, for example, determining the second resource based on the first resource, processing the message, information and/or signaling received by the transceiver module 820 , and the like.
  • the transceiver module 820 may be used to perform all the receiving and sending operations performed by the terminal device in the embodiment of the present application, and/or to support other processes of the technologies described herein.
  • Fig. 9 shows another possible structural diagram of a terminal device.
  • the terminal device includes a processor, and may also include structures such as a memory, a radio frequency unit (or radio frequency circuit), an antenna, or an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control devices, execute software programs, process data of software programs, and the like.
  • Memory is primarily used to store software programs and data.
  • the radio frequency unit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal equipment may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 9 only one memory and processor are shown in FIG. 9 .
  • a memory may also be called a storage medium or a storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
  • the antenna and the radio frequency circuit with the transceiver function can be regarded as the transceiver unit of the terminal equipment (the transceiver unit can be a functional unit, and the functional unit can realize the sending function and the receiving function; or, the transceiver unit can also be It includes two functional units, namely a receiving unit capable of receiving functions and a sending unit capable of transmitting functions), and the processor with processing functions is regarded as the processing unit of the terminal device.
  • the terminal device includes a processing unit 920 and may further include a transceiver unit 910 .
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, and the like.
  • a processing unit may also be called a processor, a processing board, a processing module, a processing device, and the like.
  • the device in the transceiver unit 910 for realizing the receiving function may be regarded as a receiving unit
  • the device in the transceiver unit 910 for realizing the sending function may be regarded as a sending unit, that is, the transceiver unit 910 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes also be referred to as a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit, etc.
  • the sending unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • the processing unit 920 is configured to perform other operations on the terminal device in the embodiment shown in this application except the transceiving operation, for example, to perform all receiving and sending operations performed by the terminal device in the embodiment shown in this application, and/or or other processes used to support the techniques described herein.
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. With the evolution of architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.
  • time slots are used as the time unit for description, and other time units such as frame, subframe, half frame, mini-slot, symbol, sampling point, etc. may also be used in specific embodiments.
  • the time unit is not limited here.
  • the transmission of the terminal device can be used for the sidelink or the uplink of the cellular link; or, the reception of the terminal device can be used for the sidelink or the on the downlink of the cellular link.
  • This embodiment of the present application does not limit this.
  • the second frequency is higher than the first frequency.
  • the first frequency and the second frequency may also be distinguished by the relative magnitudes of the center frequency value of the first frequency and the center frequency value of the second frequency.
  • the center frequency value of the first frequency is lower than the center frequency value of the second frequency.
  • the frequency band to which the first frequency belongs may be described using FR1
  • the frequency band to which the second frequency belongs may be described using FR2.
  • the first frequency and the second frequency may also be bandwidth parts.
  • the first frequency may also be referred to as a first bandwidth portion
  • the second frequency may also be referred to as a second bandwidth portion.
  • the first frequency and the second frequency may also be resource blocks.
  • the first frequency may also be called a first resource block
  • the second frequency may also be called a second resource block.
  • the first frequency may perform transmission based on a non-directional beam
  • the second frequency may perform transmission based on a directional beam
  • the resource selection process of a terminal device is described below by taking two terminal devices (hereinafter referred to as a first terminal device and a second terminal device) as an example, wherein the second terminal device is any terminal device that performs resource selection.
  • the interaction process between other terminal devices and the second terminal device is similar to the interaction process between the first terminal device and the second terminal device.
  • the second terminal device is performing resource
  • the selection may also be based on the resources of other terminal devices.
  • the specific method is similar to the way the second terminal device selects resources based on the resources of the first terminal device, and will not be described in this application.
  • the method includes:
  • the first terminal device generates first information, where the first information is used to indicate the first resource of the first terminal device on the second frequency.
  • the distance between the first terminal device and the second terminal device is greater than the fifth threshold
  • terminal devices in order to support coordination between the first frequency and the second frequency, terminal devices (such as the first terminal device and the second terminal device) need to have a function or capability to support coordination between the first frequency and the second frequency.
  • the network device may configure the first terminal device and the second terminal device to support the coordination function of the first frequency and the second frequency.
  • the coordination between the first frequency and the second frequency, and the coordination function between the first frequency and the second frequency may be understood as indicating resources on the second frequency on the first frequency.
  • the cooperative function of the first frequency and the second frequency may be a capability of the terminal device. The terminal device needs to report whether it supports the "coordination function between the first frequency and the second frequency" to the other party or the network device.
  • the third terminal device and the first terminal device may be the same terminal device or different terminal devices.
  • the candidate beam set may include beams in all spatial orientation directions, may also include beams in directions configured by signaling, and may also include an optimal beam and a backup beam pointing to a receiving device (that is, a third terminal device), or may be A subset of the best beams directed to the receiving device (ie the third terminal device) is included.
  • the second terminal device may also send indication information on the first frequency and/or the second frequency to indicate the second resource on the second frequency.
  • the first terminal device may use the SCI on the first frequency to indicate the second resource on the second frequency, and may also send indication information on the second frequency to indicate the second resource on the second frequency.
  • the second terminal device may send data on the carrier of the second frequency according to the corresponding beam direction (such as the first beam) in the selected resource, and reserve the corresponding data.
  • the second terminal device if the second terminal device supports cooperation between the first frequency and the second frequency, the second terminal device still needs to send resource reservation information (ie, the above indication information) on the first frequency and/or on the second frequency. That is, on the first frequency, the second terminal device needs to use the SCI to indicate resource reservation information on the second frequency (that is, the above indication information).
  • the second terminal device may also provide corresponding resource reservation indication information on the second frequency.
  • the second terminal device also sends the information on the reserved resources determined by itself on the first frequency, so that other terminal devices can quickly detect the resource reservation on the second frequency through the first frequency.
  • the indication of resource reservation on the second frequency can be quickly and effectively realized, for example, on the first frequency
  • beam scanning is not required, thereby shortening the time for SCI detection on the second frequency, thereby shortening the time for resource selection on the second frequency.
  • the accuracy of the resource selection and perception process can be further improved. For example, beam scanning is not required on the first frequency, and control information is not easily missed, which improves system performance when working at high frequencies.
  • the first field, the second field, the third field, and the reserved field above may also indicate one or more of the following information:
  • the time-domain resource indication information of the reserved time slot on the second frequency may indicate the number of the time slot on the second frequency, and may also indicate an offset value relative to the time slot for sending the first information on the first frequency ,
  • the time-domain resource indication information may be included in the first information, or may be included in the control information together with the first information;
  • Service transmission type information on the second frequency where the transmission type includes unicast, multicast, or broadcast.
  • the resource reserved for the second frequency can be sent on the first frequency, compatibility with old functions can be achieved, and resource usage efficiency on the first frequency can be improved.
  • the embodiment of the present application also provides another communication method, which can be applied in a scenario where only the second frequency is covered, or in a scenario where the first frequency and the second frequency are covered. In this scenario, coverage of other frequencies may also exist, which is not limited here.
  • coverage of other frequencies may also exist, which is not limited here.
  • the roadside station RSU communicates with the nearest two vehicles UE1 and UE2 using a certain downward beam, and other UEs (UE3-UE6) use corresponding beams Communicate on the ground plane.
  • UE3-UE6 UE3-UE6
  • Different beam directions have strong directivity to ensure that the target receiver can receive the corresponding signal, and non-target receivers will only have energy leakage generated by beam side lobes of a certain size.
  • UE2 receives a signal sent by UE3 with a directional beam, and also receives a signal sent to UE3 by UE6 of a certain size.
  • the possibility of the signal sent by UE6 to UE4 with a directional beam to reach UE2 will be greatly reduced (because the main lobe of the beam is facing UE2).
  • the method includes:
  • the location information of the first terminal device and the location information of the third terminal device wherein the third terminal device is a terminal device that communicates with the first terminal device on the second frequency. It should be noted that the third terminal device and the first terminal device The two terminal devices may be the same terminal device or different terminal devices;
  • a candidate beam set, where the candidate beam set includes at least one beam, where the candidate beam set may include beams in all spatially directional directions, may also include beams in directions configured by signaling, and may also include beams pointing to a receiving device (that is, a third terminal device ), the best beam and the backup beam may also be a subset including the best beam pointing to the receiving device (that is, the third terminal device).
  • the SCI detection and RSRP measurement may be performed in turn by using the beams in the candidate beam set.
  • the first terminal device is not sure whether there is a receiving end around and the location of the receiving end. Therefore, for the broadcast service, the first terminal device may send data in various directions in a manner of beam scanning.
  • the first terminal device when the first terminal device performs resource selection measurement, it can perform reception and detection in a beam scanning manner, and cannot perform reception and detection with a fixed beam.
  • the first terminal device may send a signal to a group of receivers during transmission, where the location of the group of receivers may be in various possible directions relative to the first terminal device. Therefore, for the multicast service, the first terminal device may perform the multicast service on different receiving ends in a time-division manner based on the candidate beam set, where the candidate beam set may be directed to the receiving end. Alternatively, the possible location of the receiving end may not be distinguished, and reception and detection may be performed in a broadcasting manner or in a beam scanning manner. For the multicast service, when the first terminal device performs resource selection measurement, it can no longer use a fixed beam to perform reception and detection.
  • candidate beams for resource selection can be increased, thereby increasing the reliability of the selected resources in the space direction.
  • step S1301 may be executed by the processing module 810 of the first terminal device.
  • the first terminal device can determine the impact on its own transmission when receiving data according to the beam indication information of the second terminal device.
  • the second terminal device performing unicast transmission uses control signaling to indicate the beam direction of its current transmission according to the coordinate axis agreed in the protocol or predefined.
  • the receiving device such as the first terminal device
  • the receiving device can judge other unicast, multicast or The impact of the broadcast method on its own transmission.
  • a specific value (such as the third preset state) of beam indication information may be used to indicate an omnidirectional or beam scanning transmission direction. For example, for 3-bit beam indication information, 000 or 111 may be used for indication.
  • a specific value (such as a first preset state) of the beam indication information may be used to indicate the beam direction. For example, for 3-bit beam indication information, 001-100 may be used to indicate different beam directions.
  • a specific value (such as a second preset state) of beam indication information may be used for indication. For example, for 3-bit beam indication information, 110 and the like may be used to indicate the beam direction.
  • the first terminal device determines a second resource according to the first resource, and the second resource is used for the first terminal device to send data on the second frequency.
  • the first terminal device may implement S1303 through the following steps D1-D3:
  • the first terminal device may determine the third resource from the candidate resource set of the second frequency according to the time slot where the first resource is located and the reservation period indicated in the first information.
  • the first terminal device may exclude the third resource from the candidate resource set when at least one of the following conditions is met: the signal quality corresponding to the first information exceeds a preset threshold.
  • the preset threshold may also be associated with the service priority and/or the idle state value of the resource pool when the second terminal device transmits as follows.
  • the interference effect caused by inaccurate determination of the beam direction can be reduced.
  • the first terminal device may determine whether the second resource is temporarily preempted or occupied by other terminal devices on the first beam. If yes, resources occupied by other higher-priority terminal devices may be excluded from the second resources. In this manner, it is further confirmed whether the resources selected in the transmission beam direction are clean before transmission, which can further reduce resource conflicts, thereby ensuring the transmission performance in the corresponding transmission beam direction.
  • step S1304 may be executed by the transceiver module 820 of the first terminal device.
  • the first terminal device may perform sensing and listening in an omnidirectional receiving beam manner. And, optionally, if it is detected that there is unicast or multicast transmission on all or part of the subchannels in a certain time slot, the first terminal device performing broadcast needs to exclude the entire time slot. Because when performing unicast or multicast transmission, the first terminal device must transmit with a certain beam direction or a subset of beam directions; while performing broadcast transmission, the first terminal device performs omnidirectional beam or beam scanning transmission. The beam directions of different transmission modes are different, and frequency division multiplexing on the same time slot cannot be achieved. Therefore, the time slot occupied by unicast or multicast transmission can be directly filtered out by broadcast transmission.
  • the first terminal device performs unicast transmission, it is necessary to periodically indicate the sending beam direction of the first terminal device in space.
  • This spatial direction can be on the horizontal plane, or on the vertical plane, or include both horizontal and vertical planes, as shown in Figures 15-18.
  • the first terminal device performing unicast may use control signaling (for example, carrying beam indication information in the control signaling) to indicate its current transmission beam direction according to the coordinate axis agreed in the protocol or predefined. Indicates the beam direction of the current transmission in the unicast direction, so that the receiving device (such as the third terminal device) can judge the direction of other unicast, multicast or broadcast methods for its own transmission when receiving data according to the transmission beam direction of the first terminal device. Influence.
  • Method 2 Measure the resource occupancy information of at least one beam in the candidate beam set on the resource pool to obtain the measurement information of at least one beam, and then obtain the resource occupancy information according to the measurement information of each beam in the at least one beam. For example, measurements are made in each beam direction, and then the values of CR and CBR on each beam (per beam) are calculated.
  • the accuracy of measuring the occupancy of the resource pool can be improved during the beam-based resource selection and exclusion process.
  • the communication device can be used to realize the functions of the terminal equipment involved in the above method.
  • the communication device can be the terminal equipment itself, such as an integral terminal equipment such as a vehicle-mounted terminal equipment or a roadside unit, or the communication device can also be Devices that can support terminal equipment to realize this function, such as chips, modules, TBOX, or other combined devices, components (or components) that have the functions of terminal equipment shown in this application, for example, the The communication device may be a chip, a module, or a component in equipment such as a vehicle-mounted terminal equipment or a roadside unit.
  • the communication device may include the structure shown in FIG. 8 and/or FIG. 9 .
  • An embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium.
  • the computer program When the computer program is executed by a computer, the computer can implement the procedures related to the terminal device in the above method.
  • An embodiment of the present application also provides a chip or a chip system, where the chip may include a processor, and the processor may be used to call a program or an instruction in a memory to execute the procedures related to the terminal device in the above method.
  • the system-on-a-chip may include the chip, and other components such as a memory or a transceiver.
  • the embodiment of the present application also provides a circuit, which can be coupled with a memory, and can be used to execute the procedures related to the terminal device in the above method.
  • the system-on-a-chip may include the chip, and other components such as a memory or a transceiver.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions
  • the device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

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

Abstract

La présente demande concerne un procédé et un appareil de communication, qui sont utilisés pour améliorer les performances de communication d'un dispositif terminal, et sont applicables aux domaines des V2X, de l'Internet des véhicules, de la conduite intelligente, des véhicules intelligents en réseau, etc. Le procédé comprend les étapes suivantes : recevoir des premières informations à une première fréquence, les premières informations étant utilisées pour indiquer une première ressource d'un premier dispositif terminal à une seconde fréquence, et la seconde fréquence étant supérieure à la première fréquence ; et déterminer une seconde ressource sur la base de la première ressource, et envoyer des données à la seconde fréquence à l'aide de la seconde ressource déterminée, la seconde ressource étant utilisée pour envoyer des données à la seconde fréquence. Au moyen de la solution qu'offre le procédé, une indication de réservation de ressource à une seconde fréquence peut être rapidement et efficacement mise en œuvre, et au moyen de l'indication, à une première fréquence, une ressource à la seconde fréquence, il n'est pas nécessaire d'effectuer un balayage de faisceau, permettant ainsi de réduire la durée de détection, et de réduire le temps de sélection de ressource. En outre, la possibilité d'absence de premières informations peut être réduite, de sorte que la performance du système lors du fonctionnement à la seconde fréquence peut être améliorée.
PCT/CN2022/112603 2021-08-26 2022-08-15 Procédé et appareil de communication WO2023024957A1 (fr)

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