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WO2021103033A1 - Procédé et appareil d'indication de ressource dans un spectre de fréquences sans licence - Google Patents

Procédé et appareil d'indication de ressource dans un spectre de fréquences sans licence Download PDF

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Publication number
WO2021103033A1
WO2021103033A1 PCT/CN2019/122284 CN2019122284W WO2021103033A1 WO 2021103033 A1 WO2021103033 A1 WO 2021103033A1 CN 2019122284 W CN2019122284 W CN 2019122284W WO 2021103033 A1 WO2021103033 A1 WO 2021103033A1
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WIPO (PCT)
Prior art keywords
resource
information
indication information
selection window
offset information
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PCT/CN2019/122284
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English (en)
Chinese (zh)
Inventor
贾琼
张菁菁
尤肖虎
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2019/122284 priority Critical patent/WO2021103033A1/fr
Publication of WO2021103033A1 publication Critical patent/WO2021103033A1/fr
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • This application relates to the field of wireless communication technology, and in particular to a method and device for indicating resources in an unlicensed spectrum.
  • LAA License Assisted Access
  • eLAA enhanced authorized spectrum assisted access in communication systems
  • LTE Long Term Evolution
  • the purpose of the embodiments of the present application is to provide a resource indication method and device in an unlicensed spectrum, so as to solve the problem of reducing the collision probability of resources selected by different communication devices in the unlicensed spectrum.
  • this application provides a resource indication method in an unlicensed spectrum, including: a first device determines a first resource from an unlicensed spectrum in a first selection window, and the first resource is used for the first The device performs data transmission; the first device sends resource indication information to the second device, the resource indication information is used to indicate the first resource, and the first resource is located in the second selection window of the second device .
  • the first device sends resource indication information so that the second device can determine the first resource selected by the first device according to the resource indication information, which can prevent the second device from selecting the first resource and reduce resource collisions. Probability, which improves the resource utilization of the system.
  • the resource indication information is resource offset information between the first resource and the second resource; the second resource is a preset resource or is currently used by the first device Resources.
  • the offset information between the first resource and the second resource is indicated by the resource indication information, so that the position of the first resource is indirectly indicated, and the overhead can be reduced.
  • the resource offset information includes one or more of the following: time domain offset information between the first resource and the second resource; Frequency domain offset information between the second resources;
  • Code domain offset information between the first resource and the second resource spatial domain offset information between the first resource and the second resource.
  • the resource indication information is resource location information of the first resource.
  • the location of the first resource is directly indicated, thereby improving system efficiency.
  • the resource location information includes one or more of the following: time domain location information of the first resource; frequency domain location information of the first resource.
  • the first device is a network device
  • the second device is a terminal device.
  • the resource indication information is carried in the downlink control information DCI.
  • the first device and the second device are terminal devices.
  • the resource indication information is carried in the side link control information SCI.
  • the first device is a terminal device
  • the second device is a network device.
  • the resource indication information is carried in the uplink control information UCI.
  • the present application also provides a communication device that has any method provided in the first aspect.
  • the communication device can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more units or units corresponding to the above-mentioned functions.
  • the communication device can be a network device or a terminal device.
  • the communication device includes a processor configured to support the communication device to perform the corresponding function of the first device in the method shown above.
  • the communication device may further include a memory, and the storage may be coupled with the processor, which stores program instructions and data necessary for the communication device.
  • the communication device further includes a communication interface, and the communication interface is used to support communication between the communication device and a device such as a second device.
  • the communication device includes corresponding functional units, which are respectively used to implement the steps in the above method.
  • the function can be realized by hardware, or the corresponding software can be executed by hardware.
  • the hardware or software includes one or more units corresponding to the above-mentioned functions.
  • the structure of the communication device includes a processing unit and a communication unit, and these units can perform corresponding functions in the foregoing method examples.
  • these units can perform corresponding functions in the foregoing method examples.
  • the description of the method provided in the first aspect which is not repeated here.
  • the present application provides a method, including: a second device receives resource indication information from a first device, where the resource indication information is used to indicate a first resource, and the first resource is Determined from the unlicensed spectrum in the first selection window, the first resource is used by the first device for data transmission; the second device obtains data from the unlicensed spectrum in the second selection window according to the resource indication information Determine the third resource in the.
  • the second device determining the third resource from the unlicensed spectrum in the second selection window according to the resource indication information includes: the second device is in the second selection window In the unlicensed spectrum, resources other than the first resource indicated by the resource indication information are monitored; the second device selects a resource from the detected idle resources as the third resource.
  • the resource indication information is resource offset information between the first resource and the second resource; the second resource is a preset resource or is currently used by the first device Resources.
  • the resource offset information includes one or more of the following: time domain offset information between the first resource and the second resource; The frequency domain offset information between the second resource; the code domain offset information between the first resource and the second resource; the spatial domain offset between the first resource and the second resource Shift information.
  • the resource indication information is resource location information of the first resource.
  • the resource location information includes one or more of the following: time domain location information of the first resource; frequency domain location information of the first resource.
  • the first device is a network device
  • the second device is a terminal device.
  • the resource indication information is carried in the downlink control information DCI.
  • the first device and the second device are terminal devices.
  • the resource indication information is carried in the side link control information SCI.
  • the first device is a terminal device
  • the second device is a network device.
  • the resource indication information is carried in the uplink control information UCI.
  • the present application also provides a communication device having any method provided in the third aspect.
  • the communication device can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more units or units corresponding to the above-mentioned functions.
  • the communication device can be a network device or a terminal device.
  • the communication device includes: a processor configured to support the communication device to perform the corresponding function of the second device in the method shown above.
  • the communication device may further include a memory, and the storage may be coupled with the processor, which stores program instructions and data necessary for the communication device.
  • the communication device further includes a communication interface, and the communication interface is used to support communication between the communication device and a device such as the first device.
  • the communication device includes corresponding functional units, which are respectively used to implement the steps in the above method.
  • the function can be realized by hardware, or the corresponding software can be executed by hardware.
  • the hardware or software includes one or more units corresponding to the above-mentioned functions.
  • the structure of the communication device includes a processing unit and a communication unit, and these units can perform corresponding functions in the foregoing method examples.
  • these units can perform corresponding functions in the foregoing method examples.
  • the present application provides a communication device that includes a processor, and when the processor executes a computer program or instruction in a memory, the method described in the first aspect is executed.
  • the present application provides a communication device, the communication device includes a processor, and when the processor executes a computer program or instruction in a memory, the method described in the third aspect is executed.
  • the present application provides a communication device, the communication device includes a processor and a memory, the memory is used to store computer programs or instructions; the processor is used to execute the computer programs or instructions stored in the memory, So that the communication device executes the corresponding method as shown in the first aspect.
  • the present application provides a communication device.
  • the communication device includes a processor and a memory.
  • the memory is used to store computer programs or instructions; the processor is used to execute the computer programs or instructions stored in the memory. So that the communication device executes the corresponding method as shown in the third aspect.
  • the present application provides a communication device that includes a processor, a memory, and a transceiver.
  • the transceiver is used to receive signals or send signals; and the memory is used to store computer programs or instructions;
  • the processor is configured to call the computer program or instruction from the memory to execute the method described in the first aspect.
  • the present application provides a communication device, the communication device includes a processor, a memory, and a transceiver, the transceiver is used to receive signals or send signals; the memory is used to store computer programs or instructions; The processor is configured to call the computer program or instruction from the memory to execute the method described in the third aspect.
  • the present application provides a communication device, the communication device includes a processor and an interface circuit, the interface circuit is configured to receive code instructions and transmit them to the processor; the processor runs the code Instructions to perform the corresponding method as shown in the first aspect.
  • the present application provides a communication device, the communication device includes a processor and an interface circuit, the interface circuit is configured to receive code instructions and transmit them to the processor; the processor runs the code Instructions to perform the corresponding method as shown in the third aspect.
  • this application provides a computer-readable storage medium for storing a computer program or instruction.
  • the computer reads and executes the computer program or instruction, the computer program or instruction The described method is implemented.
  • this application provides a computer-readable storage medium for storing a computer program or instruction.
  • the computer reads and executes the computer program or instruction, the computer program or instruction The described method is implemented.
  • the present application provides a computer program product including instructions, when the computer reads and executes the computer program product, the method described in the first aspect is realized.
  • the present application provides a computer program product including instructions.
  • the computer reads and executes the computer program product, the method described in the third aspect is realized.
  • the present application provides a chip including a processor, the processor is coupled with a memory, and is configured to execute a computer program or instruction stored in the memory.
  • the processor executes the computer program or instruction At this time, the method described in the first aspect is realized.
  • the present application provides a chip including a processor coupled to a memory and configured to execute a computer program or instruction stored in the memory.
  • the processor executes the computer program or instruction At this time, the method described in the third aspect is realized.
  • the present application provides a system including the communication device provided in the foregoing second aspect and the communication device provided in the foregoing fourth aspect.
  • FIG. 1 is a schematic diagram of a network architecture applicable to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a method for indicating resources in an unlicensed spectrum provided by an embodiment of this application;
  • FIG. 3 is a schematic diagram of a selection window provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of a selection window overlap process provided by an embodiment of this application.
  • FIG. 5 is a schematic diagram of a resource provided by an embodiment of this application.
  • FIG. 6 is a schematic diagram of simulation provided by an embodiment of this application.
  • FIG. 7 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • the method provided in this application can be applied to systems that use unlicensed (Unlicensed) spectrum for communication, for example, it can be an Internet of Things (IoT) system, a vehicle-to-everything (V2X) system, and narrowband things.
  • IoT Internet of Things
  • V2X vehicle-to-everything
  • N-IoT narrow band internet of things
  • LTE Long Term Evolution
  • 5G fifth-generation
  • the terminal device involved in the embodiments of the present application is an entity on the user side for receiving or transmitting signals.
  • the terminal may be a device that provides voice and/or data connectivity to the user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and the like.
  • the terminal can also be other processing equipment connected to the wireless modem.
  • the terminal can communicate with one or more core networks through a radio access network (RAN).
  • RAN radio access network
  • the terminal can also be called a wireless terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, Remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), user equipment (user device), or user equipment (user equipment, UE), etc.
  • the terminal device can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal.
  • a mobile terminal such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal.
  • the terminal device can be a portable, pocket-sized, handheld, built-in computer or vehicle-mounted mobile device, which is compatible with wireless
  • the access network exchanges language and/or data.
  • the terminal device may also be a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (personal digital assistant, PDA), and other equipment.
  • PCS personal communication service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • Common terminal devices include, for example, mobile phones, tablets, laptops, handheld computers, mobile internet devices (MID), wearable devices, such as smart watches, smart bracelets, pedometers, smart home appliances, such as smart Refrigerators, smart washing machines, etc., but the embodiments of the present application are not limited thereto.
  • MID mobile internet devices
  • wearable devices such as smart watches, smart bracelets, pedometers
  • smart home appliances such as smart Refrigerators, smart washing machines, etc.
  • the network device involved in the embodiments of this application is an entity on the network side for transmitting or receiving signals, which can be used to convert received air frames and Internet protocol (IP) packets to each other, as A router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network and so on.
  • the network equipment can also coordinate the attribute management of the air interface.
  • the network equipment may be an evolved Node B (eNB or e-NodeB) in LTE, a new radio controller (NR controller), or a gNode B (gNB) in a 5G system.
  • eNB evolved Node B
  • NR controller new radio controller
  • gNode B gNode B
  • Network equipment can cover one or more cells.
  • a communication system provided by an embodiment of this application includes a network device and a plurality of terminal devices.
  • terminal device 1 to terminal device 5 are taken as examples.
  • the terminal equipment 1-terminal equipment 5 can send signals to the network equipment on the uplink, and the network equipment can receive the uplink signals sent by the terminal equipment 1-terminal equipment 5.
  • the terminal device 4 to the terminal device 5 may also form a sub-communication system.
  • the network device can send downlink signals to the terminal device 1, the terminal device 2, the terminal device 3, and the terminal device 5 on the downlink.
  • Fig. 1 is only a schematic diagram, and this application does not specifically limit the type of the communication system, and the number and type of devices included in the communication system.
  • At least one refers to one or more, and “multiple” refers to two or more than two.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, 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 associated objects before and after are in an “or” relationship.
  • the following at least one (item) or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • At least one of a, b, or c can mean: a, b, c, a and b, a and c, b and c, or a, b and c, where a, b, c It can be single or multiple.
  • FIG. 2 a schematic flowchart of a method for indicating resources in an unlicensed spectrum provided by an embodiment of this application.
  • the embodiment of the present application does not limit the types of the first device and the second device.
  • the first device may be a network device, and the second device may be a terminal device; or, the first device may be a terminal device.
  • the second device is a network device; or, the first device may also be a terminal device, and the second device is a terminal device.
  • the method includes:
  • Step 201 The first device determines a first resource from an unlicensed spectrum in a first selection window, and the first resource is used for data transmission by the first device.
  • the first device may have selected a resource before determining the first resource. After the first device selects the resource, it can periodically use the selected resource within X cycles.
  • X can be the value configured by the network device or an agreed value.
  • the "resources” involved in the embodiments of the present application may include at least one time unit in the time domain and at least one frequency domain unit in the frequency domain.
  • a time unit may refer to a time slot, a subframe, or a symbol (symbol), etc.
  • a frequency domain unit may refer to a subchannel (subchannel) or (resource block, RB) or resource element (resource, RE) or physical resource block (physical resource block). resource block, PRB), etc.
  • the sub-channel includes one or more RBs.
  • the first device can continue to occupy the resource with probability p, which is called the retention probability; at the same time, the first device can also perform resource selection again with probability 1-p.
  • p is a number greater than or equal to 0 and less than or equal to 1, and the specific value of p is not limited in this application.
  • the first device can be in the first selection window [T+T1, T+T2], In the authorized spectrum, resources that are not occupied by other devices are selected as the first resources.
  • T1 and T2 are numbers greater than or equal to zero.
  • the duration between T1 and T2 is the duration of the first selection window, and the specific value of the duration of the first selection window may refer to the description in the prior art.
  • the duration of the first selection window is generally 5 time slots or 10 time slots.
  • the second device selects resources in the second selection window as an example for description.
  • the second device selects resources at time T', and the second selection window is [T'+T3, T'+T4].
  • the overlap area may be as shown in FIG. 3. Since the first selection window and the second selection window overlap, the first device and the second device may select the same resource, causing resource collision. In actual scenarios, there may be multiple devices simultaneously selecting resources, and the probability of resource collisions increases accordingly.
  • the first device may indicate the first resource to other devices. For details, refer to step 202.
  • Step 202 The first device sends resource indication information, where the resource indication information is used to indicate the first resource.
  • the first device may send resource indication information to the second device, or may broadcast resource indication information.
  • the resource indication information may be carried by control information.
  • the first device when the first device is a network device, the first device may carry resource indication information through downlink control information (DCI).
  • DCI downlink control information
  • the first device when the first device is a terminal device, the first device may carry resource indication information through uplink control information (UCI). Alternatively, the first device may carry resource indication information through sidelink control information (SCI).
  • UCI uplink control information
  • SCI sidelink control information
  • the resource indication information may have multiple implementation modes.
  • the resource indication information may indirectly indicate the first resource.
  • the resource indication information may be resource offset information between the first resource and the second resource.
  • the second resource may be a preset resource, or the second resource may be a resource currently used by the first device.
  • the second resource may be a resource configured by a network device, or a resource agreed upon between the first device and other devices.
  • the second resources are all resources that are known to other devices to be used or to be used by the first device.
  • the first device may also indicate the location of the second resource to other devices before using the second resource, so that other devices can determine that the second resource has been occupied by the first device .
  • the resource offset information may include one or more of the following:
  • Time-domain offset information between the first resource and the second resource
  • the time domain offset information may be used to indicate the difference between the time domain position of the first resource and the time domain position of the second resource. For example, if the first resource is located in the first slot and the second resource is located in the third slot, then the time domain offset information can be 2 slots, indicating the time domain position of the first resource and the second resource There are 2 slots between the time domain positions.
  • the time unit corresponding to the time domain offset information may be determined according to actual conditions, and may include, but is not limited to, time slots, symbols, subframes, and radio frames.
  • the frequency domain offset information may be used to indicate the difference between the frequency domain position of the first resource and the frequency domain position of the second resource. For example, if the first resource is located in the first RB and the second resource is located in the second RB, then the frequency domain offset information may be 1 RB, indicating that the frequency domain position of the first resource is between the frequency domain position of the second resource The difference is 1 RB.
  • the frequency domain unit corresponding to the frequency domain offset information may be determined according to actual conditions, and may include, but is not limited to, RB, RE, subcarrier, and PRB.
  • the code domain offset information may be used to indicate the offset information of the orthogonal code used by the first device on the first resource with respect to the orthogonal code used by the first device on the second resource. For example, if the first device uses an orthogonal code or orthogonal sequence with an index of 1 on the first resource, and an orthogonal code or an orthogonal sequence with an index of 3 on the second resource, the code domain offset information is 2.
  • the spatial domain offset information may be used to indicate the offset information between the beam adopted by the first device on the first resource and the beam adopted on the second resource. For example, if the first device uses a beam with an index of 1 on the first resource and a beam with an index of 3 on the second resource, the spatial domain offset information is 2. It is understandable that the unit corresponding to the spatial domain offset information may include, but is not limited to, beam index, beam angle, precoding matrix, and the like.
  • the resource offset information may also include offset direction information, and the offset direction information is used to indicate whether the resource offset information is the offset of the first resource relative to the second resource, or the second resource relative to the first resource.
  • the offset direction can be pre-appointed, which will not be repeated here.
  • the resource indication information may directly indicate the first resource, for example, the resource indication information may be resource location information of the first resource.
  • the resource location information includes one or more of the following:
  • Time domain location information of the first resource
  • Frequency domain location information of the first resource is Frequency domain location information of the first resource.
  • the frequency domain location information of the first resource may be pre-appointed, or the first resource
  • the frequency-domain location information of is the same as the frequency-domain location information of the second resource.
  • the second resource refers to the resource currently used by the first device.
  • the time-domain location information of the first resource may be pre-appointed or the time of the first resource.
  • the domain location information is the same as the time domain location information of the second resource.
  • the second resource refers to the resource currently used by the first device.
  • the first device can also send other information, such as sending reselected beam information, precoding matrix and other information, so that the device that receives this information can use it as a reference when selecting resources, so as to avoid differences. Interference collision between devices.
  • Step 203 The second device receives the resource indication information from the first device.
  • Step 204 The second device determines the third resource from the unlicensed spectrum in the second selection window according to the resource indication information.
  • the second device determines the first resource determined by the first device in the unlicensed spectrum according to the resource indication information, it may determine that the first resource has been occupied and is no longer an idle resource.
  • the first device may determine the location of the first resource in the first selection window as shown in FIG. 4.
  • the first resource is also located in the second selection window.
  • the second device can determine that the first resource is located in the second selection window, and the second device can listen to resources other than the first resource in the unlicensed spectrum in the second selection window .
  • the second device may select a resource from the idle resources that it hears as the third resource.
  • the second device can perform data transmission through the third resource.
  • the third resource selected by the second device is a resource different from the first resource, thereby avoiding collision with the resource selected by the first device.
  • the difference between the third resource and the first resource may include, but is not limited to, one or more combinations of different time domain positions, different frequency domain positions, and different spatial positions.
  • Figure 4 is just a simple example. In actual situations, there may be multiple devices simultaneously selecting resources in the unlicensed spectrum.
  • the following uses the second device as an example to describe how the second device determines which resources are selected by multiple devices at the same time Resources are resources that are occupied or reserved by other devices, and which resources are candidate resources that can be selected. It should be noted that the first device may also adopt the method described below in step 201, which will not be repeated here.
  • the first device sends resource indication information so that the second device can follow the resource indication sent by the first device.
  • the information determines the first resource selected by the first device, and the second device no longer selects the first resource, which can avoid resource collisions with the first device.
  • the resources in the second selection window of the second device may be reserved by other devices in addition to being selected by other devices. For example, for periodic services, the resources selected by the third device need to be used in multiple cycles. At this time, although the third device does not select resources in the second selection window, there is a third device in the second selection window.
  • the second device cannot select the resources reserved by the third device.
  • the following exemplarily describes the time-frequency resource set in the second selection window, how the second device determines the candidate resources that can be selected in the second selection window.
  • the second selection window of the second device The set of time-frequency resources included in can be referred to as a resource pool.
  • the resource pool may include N time units in the time domain, numbered from 0 to N-1, and include one or more frequency domain units in the frequency domain.
  • the third resource to be selected by the second device occupies L subchannels in the frequency domain; occupies 1 time slot in the time domain, and the period of the third resource is 1. If ⁇ m,n is recorded as the m-th sub-channel on the n-th time slot, in the second selection window All sub-channels in the corresponding resource pool are ⁇ , the resources that the second device can select in time slot n It can be expressed as L consecutive sub-channels starting from sub-channel ⁇ m, n, It can be expressed as follows:
  • the second device can occupy the position corresponding to the third resource in K cycles.
  • the second device in Figure 5 can be displayed in the second selection window Continue to occupy resources in the subsequent K-1 reservation windows.
  • the resource set composed of K resources occupied by the second device in K periods It can be expressed as follows:
  • the second device can be selected in the second selection window Previous listening window Execute the listening process in the process to obtain the situation of other devices occupying resources in the resource pool ⁇ L.
  • the second device may receive the resource indication information of the first device, so that it may be determined that the first resource is occupied by the first device.
  • the second device may also perform listen before talk (LBT) to determine which resources are idle resources and which resources are occupied resources in the second selection window.
  • LBT listen before talk
  • the control information sent by each of the J devices indicates a set of related resource parameters, including the priority p j of resources occupied by the device, the number of sub-channels L j, and the resource reservation period I j ⁇ I, where I is The set of supported resource reservation periods, etc.
  • the control information sent by each of the J devices may also include resource indication information of resources occupied by the device. Through these parameters, the second device can determine the resources occupied by these J devices It can be expressed as follows:
  • the second device cannot perform the listening process when transmitting data, that is, it is assumed that the second device is in the time slot of the listening window.
  • the second device can consider that in the listening window, the transmission resources of the second device are reserved by other devices in the future, and these resources ⁇ Tx satisfy the following formula:
  • the signal strength ⁇ j of the control information resource sent by the jth device is greater than a given threshold, nor can it be used as a candidate resource, that is:
  • Is a threshold value and its value may be related to the service priority p j , for example, it is in a proportional relationship with the service priority. It is understandable that it may also be in other implementation manners. The specific value is determined according to the actual situation.
  • the second device After the second device learns all the corresponding resource reservation information according to the detected J pieces of control information, it determines all resources with resource conflicts It can be expressed as follows:
  • the second device may select a resource from the candidate resource set satisfying the formula (10) as the third resource for the second device to perform data transmission. From the foregoing description, it can be seen that the candidate resources in the candidate resource set satisfying formula (10) are neither occupied by other devices, nor reserved by other devices, and there is no resource conflict. When the second device selects resources from it, During data transmission, it can reduce the probability of collision with the resource selected by other devices.
  • the second device After the second device uses the selected third resource to perform multiple periodic transmissions, it may perform resource selection again with a probability of 1-p.
  • FIG. 6 a schematic diagram of a simulation provided by an embodiment of this application.
  • Figure 6 shows that in the unlicensed spectrum, when each device performs resource reselection with a probability of 0.8, the probability of successful data packet transmission (Packet Delivery Rate, PDR) and the channel busyness ratio (Channel Busy Ratio, CBR) )Relationship.
  • PDR Packet Delivery Rate
  • CBR Channel Busy Ratio
  • the methods and operations implemented by the first device can also be implemented by components (such as chips or circuits) that can be used in the first device, and the methods and operations implemented by the second device can also be implemented by the second device. It can also be implemented by a component (for example, a chip or a circuit) that can be used in the second device.
  • the methods provided in the embodiments of the present application are respectively introduced from the perspective of interaction between various devices.
  • the first device or the second device may include a hardware structure and/or a software module, and the foregoing may be implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • the functional modules in the various embodiments of the present application may be integrated in one processor, or may exist alone physically, or two or more modules may be integrated in one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.
  • an embodiment of the present application further provides an apparatus 700 for implementing the function of the first device or the second device in the above-mentioned method.
  • the device may be a software module or a chip system.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the apparatus 700 may include: a processing unit 701 and a communication unit 702.
  • the communication unit may also be referred to as a transceiving unit, and may include a sending unit and/or a receiving unit, which are respectively configured to perform the sending and receiving steps of the first device or the second device in the above method embodiment.
  • the apparatus 700 can implement the steps or processes executed by the first device or the second device in the above method embodiments, which are described separately below.
  • the processing unit 701 is configured to determine a first resource from an unlicensed spectrum in a first selection window, where the first resource is used for data transmission by the first device;
  • the communication unit 702 is configured to send resource indication information to a second device, where the resource indication information is used to indicate the first resource, and the first resource is located in a second selection window of the second device.
  • the resource indication information is resource offset information between the first resource and the second resource; the second resource is a preset resource or is currently used by the first device Resources.
  • the resource offset information includes one or more of the following:
  • Time domain offset information between the first resource and the second resource
  • the resource indication information is resource location information of the first resource.
  • the resource location information includes one or more of the following:
  • Time domain location information of the first resource
  • Frequency domain location information of the first resource is Frequency domain location information of the first resource.
  • the communication device is a network device
  • the second device is a terminal device.
  • the resource indication information is carried in the downlink control information DCI.
  • the communication device and the second device are terminal devices.
  • the resource indication information is carried in the side link control information SCI.
  • the communication device is a terminal device
  • the second device is a network device.
  • the resource indication information is carried in the uplink control information UCI.
  • the communication unit 702 is configured to receive resource indication information from a first device, where the resource indication information is used to indicate a first resource, and the first resource is the first device from the unlicensed spectrum in the first selection window. It is determined that the first resource is used for data transmission by the first device;
  • the processing unit 701 is configured to determine a third resource from the unlicensed spectrum in the second selection window according to the resource indication information.
  • processing unit 701 is specifically configured to:
  • the resource indication information is resource offset information between the first resource and the second resource; the second resource is a preset resource or is currently used by the first device Resources.
  • the resource offset information includes one or more of the following:
  • Time domain offset information between the first resource and the second resource
  • the resource indication information is resource location information of the first resource.
  • the resource location information includes one or more of the following:
  • Time domain location information of the first resource
  • Frequency domain location information of the first resource is Frequency domain location information of the first resource.
  • the second device is a network device
  • the communication device is a terminal device.
  • the resource indication information is carried in the downlink control information DCI.
  • the communication apparatus and the first device are terminal devices.
  • the resource indication information is carried in the side link control information SCI.
  • the second device is a terminal device
  • the communication device is a network device.
  • the resource indication information is carried in the uplink control information UCI.
  • FIG. 8 shows an apparatus 800 provided by an embodiment of this application.
  • the apparatus shown in FIG. 8 may be a hardware circuit implementation of the apparatus shown in FIG. 7.
  • the communication device can be applied to the flowchart shown in FIG. 2 to perform the functions of the first device or the second device in the foregoing method embodiment.
  • FIG. 8 only shows the main components of the communication device.
  • the apparatus 800 shown in FIG. 8 includes at least one processor 820, configured to implement any method in FIG. 2 provided by the embodiment of the present application.
  • the device 800 may further include at least one memory 830 for storing program instructions and/or data.
  • the memory 830 and the processor 820 are coupled.
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 820 may cooperate with the memory 830 to operate.
  • the processor 820 may execute program instructions stored in the memory 830. At least one of the at least one memory may be included in the processor.
  • each step of the above method can be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the steps of the method disclosed in combination with the embodiments of the present application may be embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processing circuit (digital signal processor, DSP), a dedicated integrated circuit (application specific integrated circuit, ASIC), a field programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • ROM read-only memory
  • PROM programmable read-only memory
  • EPROM erasable programmable read-only memory
  • electrically available Erase programmable read-only memory electrically EPROM, EEPROM
  • the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.
  • the apparatus 800 may further include a communication interface 810 for communicating with other devices through a transmission medium, so that the apparatus used in the apparatus 800 can communicate with other devices.
  • the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface.
  • the transceiver when the communication interface is a transceiver, the transceiver may include an independent receiver and an independent transmitter; it may also be a transceiver with integrated transceiver functions, or an interface circuit.
  • the device 800 may also include a communication line 840.
  • the communication interface 810, the processor 820, and the memory 830 may be connected to each other through a communication line 840;
  • the communication line 840 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (extended industry standard architecture). , Referred to as EISA) bus and so on.
  • the communication line 840 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 8, but it does not mean that there is only one bus or one type of bus.
  • the processor 820 is configured to determine a first resource from an unlicensed spectrum in a first selection window, where the first resource is used for data transmission by the first device;
  • the communication interface 810 is configured to send resource indication information to a second device, where the resource indication information is used to indicate the first resource, and the first resource is located in a second selection window of the second device.
  • the resource indication information is resource offset information between the first resource and the second resource; the second resource is a preset resource or is currently used by the first device Resources.
  • the resource offset information includes one or more of the following:
  • Time domain offset information between the first resource and the second resource
  • the resource indication information is resource location information of the first resource.
  • the resource location information includes one or more of the following:
  • Time domain location information of the first resource
  • Frequency domain location information of the first resource is Frequency domain location information of the first resource.
  • the communication device is a network device
  • the second device is a terminal device.
  • the resource indication information is carried in the downlink control information DCI.
  • the communication device and the second device are terminal devices.
  • the resource indication information is carried in the side link control information SCI.
  • the communication device is a terminal device
  • the second device is a network device.
  • the resource indication information is carried in the uplink control information UCI.
  • the communication interface 810 is configured to receive resource indication information from a first device, where the resource indication information is used to indicate a first resource, and the first resource is the first device from the unlicensed spectrum in the first selection window. It is determined that the first resource is used for data transmission by the first device;
  • the processor 820 is configured to determine a third resource from the unlicensed spectrum in the second selection window according to the resource indication information.
  • the processor 820 is specifically configured to:
  • the resource indication information is resource offset information between the first resource and the second resource; the second resource is a preset resource or is currently used by the first device Resources.
  • the resource offset information includes one or more of the following:
  • Time domain offset information between the first resource and the second resource
  • the resource indication information is resource location information of the first resource.
  • the resource location information includes one or more of the following:
  • Time domain location information of the first resource
  • Frequency domain location information of the first resource is Frequency domain location information of the first resource.
  • the second device is a network device
  • the communication device is a terminal device.
  • the resource indication information is carried in the downlink control information DCI.
  • the communication apparatus and the first device are terminal devices.
  • the resource indication information is carried in the side link control information SCI.
  • the second device is a terminal device
  • the communication device is a network device.
  • the resource indication information is carried in the uplink control information UCI.
  • this application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.
  • a computer-usable storage media including but not limited to disk storage, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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

Abstract

L'invention concerne un procédé et un appareil d'indication de ressource dans un spectre de fréquences sans licence. Le procédé comprend les étapes suivantes : un premier dispositif détermine une première ressource d'un spectre de fréquences sans licence dans une première fenêtre de sélection, la première ressource étant utilisée pour effectuer une transmission de données par le premier dispositif ; le premier dispositif transmet des informations d'indication de ressource à un deuxième dispositif, les informations d'indication de ressource étant utilisées pour indiquer la première ressource. Au moyen du procédé fourni par la présente invention, le premier dispositif transmet les informations d'indication de ressource, de sorte que le deuxième dispositif puisse déterminer, selon les informations d'indication de ressource, la première ressource sélectionnée par le premier dispositif et, ainsi, le deuxième dispositif ne sélectionne pas la première ressource et peut éviter une situation de collision de ressources avec le premier dispositif, ce qui réduit la probabilité de collision de ressources et améliore le taux d'utilisation de ressources d'un système.
PCT/CN2019/122284 2019-11-30 2019-11-30 Procédé et appareil d'indication de ressource dans un spectre de fréquences sans licence Ceased WO2021103033A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105409270A (zh) * 2014-05-30 2016-03-16 华为技术有限公司 资源共享方法及通信节点
CN105848165A (zh) * 2015-01-14 2016-08-10 中兴通讯股份有限公司 非授权资源的使用方法、系统、基站及用户设备
WO2019058022A1 (fr) * 2017-09-22 2019-03-28 Nokia Technologies Oy Autorisation de transmission en liaison montante pendant une sous-trame de liaison descendante, basée sur une préemption de transmission de données dans un réseau sans fil
CN109691146A (zh) * 2018-11-29 2019-04-26 北京小米移动软件有限公司 资源碰撞解决方法、装置及存储介质
CN109842944A (zh) * 2017-11-28 2019-06-04 上海诺基亚贝尔股份有限公司 用于非授权频谱上的资源分配的方法、设备和计算机可读存储介质

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105409270A (zh) * 2014-05-30 2016-03-16 华为技术有限公司 资源共享方法及通信节点
CN105848165A (zh) * 2015-01-14 2016-08-10 中兴通讯股份有限公司 非授权资源的使用方法、系统、基站及用户设备
WO2019058022A1 (fr) * 2017-09-22 2019-03-28 Nokia Technologies Oy Autorisation de transmission en liaison montante pendant une sous-trame de liaison descendante, basée sur une préemption de transmission de données dans un réseau sans fil
CN109842944A (zh) * 2017-11-28 2019-06-04 上海诺基亚贝尔股份有限公司 用于非授权频谱上的资源分配的方法、设备和计算机可读存储介质
CN109691146A (zh) * 2018-11-29 2019-04-26 北京小米移动软件有限公司 资源碰撞解决方法、装置及存储介质

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