WO2020062105A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2020062105A1
WO2020062105A1 PCT/CN2018/108491 CN2018108491W WO2020062105A1 WO 2020062105 A1 WO2020062105 A1 WO 2020062105A1 CN 2018108491 W CN2018108491 W CN 2018108491W WO 2020062105 A1 WO2020062105 A1 WO 2020062105A1
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WIPO (PCT)
Prior art keywords
resource
terminal device
uplink data
information
network device
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PCT/CN2018/108491
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English (en)
Chinese (zh)
Inventor
米翔
铁晓磊
苏俞婉
金哲
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华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2018/108491 priority Critical patent/WO2020062105A1/fr
Priority to CN201880097540.2A priority patent/CN112703791B/zh
Publication of WO2020062105A1 publication Critical patent/WO2020062105A1/fr

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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

  • the present application relates to the field of wireless communication technologies, and in particular, to a communication method and device.
  • Narrowband Internet of Things is a network for machine type communication (MTC), and it is an important type of network in the future communication field.
  • the Internet of Things communication is mainly used in smart meter reading, medical detection monitoring, logistics detection, industrial detection monitoring, vehicle networking, smart communities, and wearable device communication.
  • the terminal device when a terminal device has uplink data to transmit, the terminal device needs to request uplink resources from the base station; then the base station issues uplink transmission scheduling information according to the request of the terminal device; the terminal device schedules according to the uplink transmission scheduling information
  • the uplink resource is used to transmit uplink data.
  • the base station sends downlink control information (downlink control information) in a corresponding format according to the demodulation of the uplink data.
  • the format of DCI includes DCI format N0 and DCI format N1.
  • the uplink scheduling-free transmission can also be referred to as grant-free transmission or UpLink transmission pre-configured resources or transmission pre-configured UL resources. These are referred to as uplink free scheduling transmission.
  • the base station pre-configures uplink scheduling-free resources for the terminal device.
  • the terminal device When the terminal device has uplink data to transmit, the terminal device directly performs uplink data on the pre-configured uplink scheduling-free resource in accordance with a predetermined transmission method Transmission; the base station sends feedback information based on the demodulation of uplink data.
  • the terminal device does not need to apply for uplink transmission resources to the base station, and does not need to wait for the base station to issue uplink transmission scheduling information, which reduces the signaling process, reduces power consumption delay, and reduces Advantages such as signaling overhead.
  • the base station after the base station configures uplink terminal scheduling-free resources for the terminal device, the base station does not know when the terminal device will perform uplink scheduling-free transmission through the uplink scheduling-free resource. For this reason, the base station needs to perform operations such as blind detection and blind decoding on each uplink scheduling-free resource, which results in high complexity of the blind detection of the base station and wastes power consumption of the base station.
  • the purpose of the embodiments of the present application is to provide a communication method and device, which are used to solve the problem of how to reduce the blind detection complexity of network equipment in the uplink scheduling-free transmission technology.
  • An embodiment of the present application provides a communication method, including: a terminal device determining a first resource; when the terminal device determines to perform uplink data transmission through a second resource, determining that the terminal device instructs the terminal device to perform data transmission through the second resource First indication information for uplink data transmission, and sending the first indication information to a network device through the first resource; and the terminal device for uplink data transmission through the second resource.
  • the terminal device instructs the terminal device to transmit uplink data in the second resource by sending the first instruction information, so that the network device can determine that the second resource includes the uplink data of the terminal device.
  • the network device can determine that the second resource includes the uplink data of the terminal device.
  • the determining, by the terminal device, the first indication information includes: receiving, by the terminal device, first information sent by the network device, where the first information is used to configure the first information from the network device.
  • the first indication information is indicated in at least one indication information; the terminal device determines the first indication information from the at least one indication information according to the first information.
  • the determining, by the terminal device, the first instruction information includes that the terminal device selects one piece of instruction information from at least one piece of instruction information configured by the network device as the first instruction information.
  • the method before the terminal device performs uplink data transmission through the second resource, the method further includes: the terminal device receives second resource configuration information sent by a network device; the second resource configuration The information indicates at least one resource for uplink data transmission, and each resource of the at least one resource is associated with one indication information; the terminal device associates the resource of the at least one resource associated with the first indication information Determined as the second resource.
  • the second resource is associated with the first instruction information.
  • the network device only needs to indicate the first instruction information, and the terminal device can determine the second resource associated with the first instruction information. Accordingly, the network device receives the The first indication information can determine the location of the second resource associated with it.
  • the method before the terminal device performs uplink data transmission through the second resource, the method further includes: the terminal device receives second resource configuration information sent by a network device; the second resource configuration The information indicates at least one resource used for uplink data transmission; the terminal device receives second information sent by the network device, and the second information is used to indicate the second resource from the at least one resource; the The terminal device determines the second resource from the at least one resource according to the second information.
  • the method before the terminal device performs uplink data transmission through the second resource, the method further includes: the terminal device receives second resource configuration information sent by a network device; the second resource configuration The information indicates at least one resource for uplink data transmission; the terminal device selects one resource from the at least one resource as the second resource.
  • each resource of the at least one resource is associated with a piece of indication information
  • the determining, by the terminal device, the first indication information includes: the terminal device will be associated with the second resource.
  • the instruction information is used as the first instruction information.
  • the second resource is associated with the first indication information.
  • the network device only needs to indicate the second resource, and the terminal device can determine the first indication information associated with the second resource. Accordingly, the network device receives the first indication information. As soon as the information is indicated, the location of the second resource associated with it can be determined.
  • the terminal device selecting one resource from the at least one resource as the second resource includes: the terminal device selecting one of the at least one resource and the uplink data A resource corresponding to a required transmission block size TBS is used as the second resource; or, the terminal device selects, from the at least one resource, a resource corresponding to the RSRP measured by the terminal device as the second resource. .
  • each of the at least one resource is associated with a pre-configured resource; the determining, by the terminal device, a first resource includes: The configured resource is used as the first resource.
  • the second resource is associated with the first resource.
  • the terminal device only needs to determine the second resource, and the terminal device can determine the first resource associated with the second resource. Accordingly, the network device is in the first resource. After receiving the first indication information, the location of the second resource associated with the first resource can be determined.
  • determining the first resource by the terminal device includes: receiving, by the terminal device, first resource configuration information sent by a network device; the first resource configuration information indicating the first resource; the The terminal device determines the first resource according to the first resource configuration information.
  • determining the first resource by the terminal device includes: the terminal device will be located before a first reference position, and a time interval between an end position and the first reference position is a first preset For resources corresponding to N time units in a time interval, as the first resource, N is an integer greater than 0; the first reference position is a start position of a resource with an earliest start position among the at least one resource; Alternatively, the terminal device uses the resources corresponding to N time units with the first reference position as a starting position as the first resource, and N is an integer greater than 0.
  • At least one resource configured by the network device can be associated with the same first resource, thereby improving resource utilization.
  • the location of the first resource can be agreed in advance between the network device and the terminal device, so that it is not necessary to indicate the first resource through signaling, and the signaling overhead is reduced.
  • determining the first resource by the terminal device includes: receiving, by the terminal device, third information sent by a network device, where the third information indicates a second preset time interval; A resource that is located before the second reference position and the time interval between the end position and the second reference position corresponds to N time units of the second preset time interval.
  • N is greater than An integer of 0; the second reference position is a starting position of the second resource.
  • the flexibility of the first instruction information can be improved, and the first resource that sends the first instruction information can be prevented from colliding with the second resource where uplink data occurs, thereby improving system efficiency.
  • the first indication information is one of the following or a combination of at least one of the following:
  • the duration of transmission is small and shorter than the duration of uplink data in the second resource. Therefore, the complexity of blind detection of the first indication information by the network device is less than that of the blind detection of the second resource The complexity of the uplink data of the uplink data can be reduced by the first indication information.
  • the first indication information further indicates at least one of the following information: an identifier of the terminal device; an MCS of the uplink data; a TBS of the uplink data; and a number of repetitions of the uplink data .
  • an embodiment of the present application provides a communication device, where the communication device includes a processor, and the processor is coupled to a memory, where: the memory is used to store instructions; the processor is used to execute the instructions stored in the memory to execute The first aspect or the method in any of the possible designs of the first aspect.
  • the communication device may further include the memory.
  • the communication device may further include a transceiver for supporting the communication device to perform information transmission and / or reception in the foregoing method.
  • the communication device may be a terminal device or a device in the terminal device, such as a chip or a chip system, where the chip system includes at least one chip, and the chip system may further include other circuit structures and / or Discrete devices.
  • an embodiment of the present application provides a communication apparatus for implementing the foregoing first aspect or any one of the methods in the first aspect, including corresponding function modules, such as a processing unit, a transceiver unit, and the like, which are respectively used for Implement the steps in the above method.
  • a communication method includes: when a network device receives, in a first resource, first instruction information sent by a terminal device and used to instruct the terminal device to perform uplink data transmission through a second resource, the network The device determines that the terminal device performs uplink data transmission through the second resource according to the first instruction information; the network device receives the uplink data sent by the terminal device in the second resource, and demodulates the received data Uplink data.
  • the network device can determine that the terminal device transmits uplink data in the second resource after receiving the first indication information, so that blind detection in the second resource is not required, thereby reducing the complexity of blind detection of the network device and the network.
  • the power consumption of the device improves the efficiency of data transmission.
  • the method before the network device receives the first indication information sent by the terminal device in the first resource, the method further includes: the network device sends the first resource configuration information to the terminal device; The first resource configuration information indicates the first resource.
  • the method before the network device receives the first indication information sent by the terminal device in the first resource, the method further includes: the network device sends the second resource configuration information to the terminal device;
  • the second resource configuration information indicates at least one resource used for uplink data transmission.
  • each of the at least one resource is associated with one indication information.
  • the method before the network device receives the first indication information sent by the terminal device in the first resource, the method further includes: the network device sends the first information to the terminal device, and the The first information is used to indicate the first indication information from at least one indication information pre-configured by the network device.
  • the method before the network device receives the first instruction information sent by the terminal device in the first resource, the method further includes: the network device sends the second information to the terminal device, and the The second information is used to indicate the second resource from the at least one resource.
  • the second information further indicates a resource type of the second resource; the resource type includes an exclusive resource and a shared resource; and the exclusive resource is a resource on the network device.
  • the resource type includes an exclusive resource and a shared resource; and the exclusive resource is a resource on the network device.
  • the shared resource is a resource allocated to at least two terminal devices in a cell of the network device.
  • the first indication information is any one of the following or a combination of at least one of the following:
  • the first indication information may further indicate at least one of the following information:
  • the identifier of the terminal device The identifier of the terminal device; the MCS of the uplink data; the TBS of the uplink data; and the number of repetitions of the uplink data.
  • an embodiment of the present application provides a communication device, where the communication device includes a processor, and the processor is coupled to a memory, where the memory is used to store instructions; the processor is configured to execute the instructions stored in the memory to execute The fourth aspect or the method in any of the possible designs of the fourth aspect.
  • the communication device may further include the memory.
  • the communication device may further include a transceiver for supporting the communication device to perform information transmission and / or reception in the foregoing method.
  • the communication device may be a network device or a device in the network device, such as a chip or a chip system, where the chip system includes at least one chip, and the chip system may further include other circuit structures and / or Discrete devices.
  • an embodiment of the present application provides a communication device, which is used to implement the fourth aspect or any one of the methods in the fourth aspect, and includes a corresponding functional module, for example, including a processing unit, a transceiver unit, and the like, respectively Implement the steps in the above method.
  • An embodiment of the present application provides a communication method, including: a network device determines fourth information, where the fourth information is used to indicate whether a terminal device needs to send fifth information before sending uplink data in a scheduling-free resource, and the fifth information The information is used to indicate that uplink data is sent in the scheduling-free resource; the network device sends fourth information to the terminal device.
  • the scheduling-free resource is a resource configured by the network device for the terminal device to send uplink data.
  • the method before the network device determines the fourth information, the method further includes: the network device determines that a coverage condition of the terminal device is greater than a preset threshold.
  • the coverage condition is any of the following: coverage level; RSRP.
  • An embodiment of the present application provides a communication method, including: a terminal device receiving fourth information sent by a network device, where the fourth information is used to indicate whether the terminal device needs to send a fifth message before sending uplink data in a scheduling-free resource; Information, the fifth information is used to instruct the terminal device to send uplink data in the scheduling-free resource; if the terminal device determines that the fifth information does not need to be sent according to the fourth information, it sends the uplink data Before the data, the fifth information is not transmitted.
  • the terminal device may not send the fifth information when receiving the fourth information sent by the network device, which not only reduces the power consumption of the terminal device, the network resource overhead, but also reduces the complexity of the blind detection of the network device.
  • An embodiment of the present application provides a communication method, including: if the terminal device sends uplink data through the scheduling-free resources in each period of the periodic scheduling-free resources, before sending uplink data, And sending the fifth information, where the fifth information is used to instruct sending uplink data in a scheduling-free resource.
  • the terminal device may not send the fifth information when periodically sending uplink data, which not only reduces the power consumption of the terminal device, the network resource overhead, but also reduces the complexity of blind detection of the network device.
  • An embodiment of the present application provides a computer-readable storage medium, where the computer-readable instructions are stored in the computer storage medium, and when the computer reads and executes the computer-readable instructions, the communication device is caused to execute any one of the foregoing possible Methods in design.
  • An embodiment of the present application provides a computer program product.
  • the communication device is caused to execute a method in any of the foregoing possible designs.
  • An embodiment of the present application provides a chip that is connected to a memory and is used to read and execute a software program stored in the memory to implement the method in any one of the foregoing possible designs.
  • An embodiment of the present application provides a communication device, including a processor, which is configured to be coupled to a memory, and read and execute instructions in the memory to implement any one of the foregoing aspects or any of the possible aspects. Methods in design.
  • An embodiment of the present application provides a communication system including the communication device in the second aspect and the communication device in the fifth aspect.
  • FIG. 1 is a schematic diagram of a communication system applicable to a communication method according to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a communication method according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of resource division according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of resource association according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of resource association according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of resource association according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the embodiments of the present application can be applied to various mobile communication systems, such as: a new wireless (NR) system, a global mobile communication (GSM) system, and a code division multiple access (CDMA) system.
  • NR new wireless
  • GSM global mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • LTE long term evolution
  • LTE-A advanced long term evolution
  • FIG. 1 is a schematic diagram of a communication system applicable to a communication method according to an embodiment of the present application.
  • the network equipment and UE1 to UE6 form a communication system.
  • UE1 to UE6 can send uplink data to the network equipment, and the network equipment can also send downlink data to UE1 to UE6.
  • UE4 to UE6 can also form a communication system.
  • the network device can send downlink data of UE4 and UE6 to UE5, and UE5 forwards the data to UE4 and UE6.
  • the terminal device in the embodiment of the present application is a device having a wireless transmitting / receiving function or a chip that can be provided in the device in order to provide voice and / or data connectivity to a user.
  • the terminal device can communicate with one or more core networks via a radio access network (RAN).
  • RAN radio access network
  • the terminal device may be a mobile phone, a tablet, a computer with a wireless transmitting and receiving function, a personal digital assistant (PDA), a virtual reality (VR) terminal, or an augmented reality (augmented reality).
  • AR augmented reality
  • wireless terminal in industrial control wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, transportation Wireless terminals in transportation, wireless terminals in smart cities, wireless terminals in smart homes, and the like.
  • the embodiment of the present application does not limit the application scenario.
  • the foregoing terminal device and chips that can be disposed in the foregoing terminal device are collectively referred to as a terminal device.
  • the terminal equipment in the embodiments of the present application may also be referred to as user equipment (UE), user terminal (user terminal), access terminal (access terminal), user unit, user station, mobile station (mobile station), A mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent, or a user device.
  • a network device is a device with a wireless transceiver function or a chip that can be set on the device.
  • the network device can be used to convert the received air frames and IP packets to each other as a terminal device and the rest of the access network.
  • the router can also be used to coordinate the management of the attributes of the air interface.
  • the equipment includes but is not limited to: evolved Node B (eNB), radio network controller (RNC), node B (NB), base station controller (BSC) Base station, base transceiver station (BTS), home base station (e.g., home NodeB, or home Node B, HNB), baseband unit (BBU), wireless fidelity (WIFI) system Access point (AP), wireless relay node, wireless backhaul node, transmission point (TRP or transmission point, TP), etc., can also be gNB or transmission in 5G (NR) system Point (TRP or TP), one or a group of base stations (including multiple antenna panels) in 5G systems, antenna panels, etc.
  • eNB evolved Node B
  • RNC radio network controller
  • NB node B
  • BSC base station controller
  • BTS base transceiver station
  • BTS home base station
  • BBU baseband unit
  • WIFI wireless fidelity
  • AP wireless relay node
  • TRP or transmission point, TP transmission point
  • the network architecture and service scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those of ordinary skill in the art may know that with the network The evolution of the architecture and the emergence of new business scenarios. The technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • FIG. 2 a schematic flowchart of a communication method according to an embodiment of the present application is shown. Referring to Figure 2, the method includes:
  • Step 201 The terminal device determines a first resource.
  • Step 202 When the terminal device determines to perform uplink data transmission through the second resource, determine the first instruction information for instructing the terminal device to perform uplink data transmission through the second resource, and send the first device to the network through the first resource. The device sends the first instruction information.
  • the second resource is a resource pre-configured by the network device. Before the terminal device performs uplink data transmission in the second resource, it does not need to request the network device to schedule the second resource for it.
  • the application embodiment is not limited thereto, and details are not described herein again.
  • the first resource and the second resource may be on the same carrier or on different carriers.
  • the number of time units included in the second resource may be greater than, equal to, or less than the number of time units included in the first resource.
  • the time unit may refer to a single-carrier frequency-division multiple access (SC-FDMA) symbol or slot, a resource unit (RU), or a number of repetitions.
  • SC-FDMA single-carrier frequency-division multiple access
  • Step 203 The terminal device performs uplink data transmission through the second resource.
  • Step 204 When the network device receives, in the first resource, the first instruction information sent by the terminal device and used to instruct the terminal device to perform uplink data transmission through the second resource, the network device according to the first instruction information. It is determined that the terminal device performs uplink data transmission through the second resource.
  • Step 205 The network device receives the uplink data sent by the terminal device in the second resource, and demodulates the received uplink data.
  • the terminal device instructs the terminal device to perform uplink data transmission in the second resource by sending the first instruction information. Because the second resource is a scheduling-free resource pre-configured by the network device, the network device receives the first instruction information, and the network device determines whether the terminal device transmits uplink data in the second resource, thereby reducing the complexity of blind detection of the network device and the network. The power consumption of the device improves the efficiency of data transmission.
  • the terminal device instructs the terminal device to send uplink data in the second resource only by sending the first instruction information before performing uplink data transmission through the second resource; accordingly, the terminal device When it is not necessary to perform uplink data transmission through the second resource, the first indication information is not sent.
  • the terminal device determines that it is not necessary to perform uplink data transmission through the second resource, it sends the first instruction information to instruct the terminal device not to perform uplink data transmission through the second resource.
  • the terminal device determines that uplink data transmission needs to be performed through the second resource, it does not send the first instruction information, but directly performs uplink data transmission.
  • the terminal device sends the first indication information regardless of whether uplink data transmission is performed through the second resource. Specifically, when a terminal device needs to perform uplink data transmission through the second resource, it sends the first instruction information to instruct the terminal device to perform uplink data transmission through the second resource; accordingly, the terminal device does not need to pass When the second resource performs uplink data transmission, sending the first instruction information instructs the terminal device not to perform uplink data transmission through the second resource.
  • the first indication information may be configured according to carrier granularity, that is, one indication information is configured for each carrier. At this time, the first indication information is on carrier 1 and the second indication information is on carrier 2.
  • the first indication information may be any one of the following or a combination of at least one of the following:
  • ZC Zero-Chu sequence
  • Gold sequence M sequence
  • demodulation reference signal (DMRS) sequence preamble.
  • the DMRS sequence may fill the L time units of the first resource in a repeated manner.
  • the time unit may refer to a slot (slot) or a resource unit (RU) or a number of repetitions.
  • the first indication information is a preamble
  • these preambles are divided into 2 or 3 orthogonal sets. If it is divided into 2 orthogonal sets, that is, when divided into sets 1 and 2, the preamble in set 1 is used for random access, and the preamble in set 2 is used as the first indication information; it is divided into 3 orthogonal sets. , That is, when it is divided into set 1, set 2, and set 3: the preamble in set 1 is used for random access, the preamble in set 2 is used as the first indication information, and the preamble in set 3 is used for data early Transmission (early data transmission) (EDT).
  • EDT data early Transmission
  • the first indication information may further indicate at least one of the following information:
  • An identifier of the terminal device a modulation and coding scheme (MCS) of the uplink data; a transport block size (TBS) of the uplink data; and a number of repetitions of the uplink data.
  • MCS modulation and coding scheme
  • TBS transport block size
  • the network device can quickly determine the terminal device transmitting the uplink data, thereby reducing the complexity of blind detection of the network device and improving the detection efficiency of the uplink data.
  • the network device can directly determine the MCS of the uplink data, thereby reducing the complexity of blind detection of the network device and improving the demodulation efficiency of the uplink data.
  • the network device can determine the size of the uplink data transmitted by the terminal device, thereby reducing the complexity of the blind detection of the network device and improving the detection efficiency of the uplink data.
  • the complexity of blind detection of network equipment can be reduced, and the detection efficiency of uplink data by network equipment can be improved.
  • the terminal device determines that there may be multiple implementation manners for the first indication information, the first resource, and the second resource, which are respectively described below.
  • the order in which the terminal device determines the first resource, the first indication information, and the second resource is not limited, and details are not described herein again.
  • the terminal device may determine the first indication information according to any one of the following manners.
  • Manner 1 The network device sends first information, and the first information is used to indicate the first instruction information from at least one instruction information configured by the network device.
  • the terminal device may determine the first instruction information from at least one instruction information configured by the network device according to the first information.
  • Manner 2 The terminal device selects one piece of instruction information from at least one piece of instruction information configured by the network device as the first instruction information.
  • the terminal device may randomly select one of the indication information as the first indication information, or may select the first indication information by other methods, which is not limited in the embodiment of the present application, and is not repeated here.
  • the network device may configure at least one resource for the terminal device in advance, and each resource of the at least one resource is associated with one indication information.
  • the second resource used by the terminal device to transmit uplink data is selected from the at least one resource, and the at least one resource is an uplink scheduling-free transmission resource and is used by the terminal device for uplink data transmission.
  • the terminal device may determine a second resource from the at least one resource, and use the indication information associated with the second resource as the first indication information.
  • the terminal device determines the second resource will be described in detail later, and will not be repeated here.
  • the terminal device may determine the second resource according to any one of the following methods.
  • Manner 1 The terminal device receives second resource configuration information sent by a network device; the second resource configuration information indicates at least one resource used for uplink data transmission;
  • the terminal device determines the second resource from the at least one resource according to the second information.
  • the second information may also indicate a resource type of the second resource; the resource type includes a dedicated resource and a shared resource; the exclusive resource is Within the cell of the network device, a resource exclusive to one terminal device is allocated, and the shared resource is a resource shared by at least two terminal devices in the cell of the network device.
  • a shared resource that is, a network device allocates the resource to multiple terminal devices, and conflicts may occur between terminal devices when sending data.
  • An exclusive resource that is, a network device allocates the resource to only one terminal device, and no conflict occurs.
  • the terminal device determines the resource type of the second resource through the second instruction information, and then can determine whether the second resource is allocated to other terminal devices at the same time, and the terminal device can adjust the transmission mode to achieve more efficient transmission. For example, if the resource type of the second resource is a shared resource, conflicts may occur, and the terminal device may choose to send uplink data with a low bit rate and a high number of repetitions to improve the reliability of data transmission; correspondingly, If the resource type of the second resource is an exclusive resource, the terminal device may choose to send the uplink data with a high bit rate and a low number of repetitions to reduce resource overhead and power consumption.
  • the network device when the network device is configured with at least one resource in advance, the at least one resource may be explicitly indicated, or the at least one resource may be implicitly indicated.
  • the network device can indicate a resource and the maximum number of repetitions.
  • the terminal device can split the maximum number of repetitions according to the dichotomy, obtain multiple repetitions after the split, and determine the number of repetitions Corresponding resources. For example, as shown in FIG. 3, the network device indicates resource # 1, and the maximum number of repetitions is 128.
  • 128 can be split into two 64 and four 32; then the resource corresponding to each repetition is determined, that is, the number of multiple transmissions corresponding to resource # 2, resource # 3 is 64; resource # 4, resource The number of multiple transmissions corresponding to # 5, resource # 6, and resource # 7 is 32. Therefore, the network device indicates a total of 7 resources, and each resource corresponds to a repetition number.
  • uplink data occupies T resource units (RUs) and the number of repetitions is K
  • the second resource includes K * T RUs, and T is an integer greater than or equal to 1.
  • One RU includes at least one slot in the time domain, and each slot includes seven single-carrier frequency-division multiple access (SC-FDMA) symbols.
  • SC-FDMA single-carrier frequency-division multiple access
  • the second resource configuration information may be sent through system information, or may be sent through radio resource control (radio resource control (RRC) signaling), which is not limited in the embodiment of the present application.
  • RRC radio resource control
  • the system information may be a master information block (MIB) or a system information block (SIB).
  • each of the at least one resource indicated by the network device through the second resource configuration information is associated with one indication information, and thus the terminal device may determine the second resource according to the association relationship.
  • the terminal device may first determine the first indication information, and use the resource associated with the first indication information among the at least one resource as the second resource.
  • the terminal device determines the first indication information For how the terminal device determines the first indication information, refer to the foregoing description, and details are not described herein again.
  • Manner 3 The terminal device receives second resource configuration information sent by a network device; the second resource configuration information indicates at least one resource used for uplink data transmission. The terminal device selects one resource from the at least one resource as the second resource, and uses the indication information associated with the second resource as the first indication information.
  • the terminal device may randomly select one resource as the second resource, or may select the second resource by other methods.
  • a correspondence between a transport block size (TBS) required for uplink data and each resource in the at least one resource is established in advance, and the terminal device may select one of the at least one resource and the corresponding resource.
  • the resource corresponding to the TBS required for the uplink data is used as the second resource.
  • each resource in the at least one resource corresponds to a different TBS value range.
  • TBS is in the first value range, it corresponds to one of the at least one resource.
  • TBS is in the second value range, Corresponding to another one of the at least one resource, and so on.
  • the terminal device determines the TBS, determines a value range in which the TBS is located, and then uses a resource corresponding to the value range among the at least one resource as the second resource.
  • a correspondence relationship between reference signal receiving power (RSRP) and each resource in the at least one resource is established in advance, and the terminal device selects one of the at least one resource and the terminal device from the at least one resource.
  • a resource corresponding to the measured RSRP is used as the second resource.
  • each of the at least one resource corresponds to a different RSRP value range.
  • the terminal device may determine the first resource according to any one of the following methods.
  • Method 1 When there is no association between the first resource and the second resource, the first resource may be indicated by the network device through signaling.
  • the network device may send the first resource configuration information to the terminal device; the first resource configuration The information is used to indicate the first resource.
  • the terminal device can thus determine the first resource according to the first resource configuration information.
  • Manner 2 When there is an association relationship between the first resource and the second resource, the association relationship between the first resource and the second resource may be established in advance, so that the terminal device may use the pre-configured resources associated with the second resource as all resources. Said the first resource.
  • each of the at least one resource may be associated with the same pre-configured resource.
  • the terminal device selects, it is the same.
  • the indication information used by different terminal devices can be distinguished by a code division multiplexing method.
  • multiple terminal devices can reuse the same first resource, thereby improving resource utilization.
  • the location of the first resource can be agreed in advance between the network device and the terminal device, so that it is not necessary to indicate the first resource through signaling, and the signaling overhead is reduced.
  • At least one resource indicated by the network device through the second resource configuration information is: resource # 1, resource # 2, resource # 3, and resource # 4, which are all the same pre-configured resource Association, that is, the first resources associated with resource # 1, resource # 2, resource # 3, and resource # 4 are the same.
  • the The first resource may be a resource corresponding to N time units, and a time interval with the first reference position may be a first preset time interval, N is an integer greater than 0; the first reference position is the at least one The start position of the resource with the earliest start position. For example, in conjunction with FIG. 4, the starting position of resource # 1 is the first reference position.
  • the first resource may be a resource corresponding to N time units with the first reference position as a starting position.
  • At least one resource indicated by the network device through the second resource configuration information is: resource # 1, resource # 2, resource # 3, and resource # 4, which are all associated with the same pre-configured resource, that is, resource # 1, resource # 2
  • the first resources associated with resource # 3 and resource # 4 are the same, and the first resource is a resource corresponding to N time units starting from the start position of resource # 1.
  • each of the at least one resource may be associated with a different pre-configured resource.
  • the network device may notify the terminal device of a time interval, and the terminal device may derive the location of the first resource according to the time interval and the location of the second resource.
  • the network device may send third information, where the third information indicates a second preset time interval.
  • the terminal device may use, as the first resource, a resource corresponding to N time units located before the second reference position and a time interval between the end position and the second reference position is the second preset time interval.
  • N is an integer greater than 0; the second reference position is a starting position of the second resource.
  • the network device may associate a different first resource for each second resource, and may ensure that the associated first resource does not conflict with other second resources.
  • the indication information used by different terminal devices may be distinguished by using a code division multiplexing method and / or a time division multiplexing.
  • the flexibility of the first instruction information can be improved, and the first resource that sends the first instruction information can be prevented from colliding with the second resource where uplink data occurs, thereby improving system efficiency.
  • the at least one resource indicated by the network device through the second resource configuration information is: resource # 1, resource # 2, resource # 3, and resource # 4, which are respectively different from different pre-configured resources Associated.
  • the time intervals (gap) between resource # 1, resource # 2, resource # 3, and resource # 4 and their associated pre-configured resources are interval 1, interval 2, interval 3, and interval 4, respectively.
  • the network device only needs to indicate interval 1, interval 2, interval 3, and interval 4, and the terminal device can derive corresponding resources.
  • the terminal device may send the first instruction information according to the determined first resource before the second resource performs uplink data transmission.
  • the network device may determine that uplink data of the terminal device exists in the second resource, so as to receive and demodulate the uplink data in the second resource. Because the network device has determined that uplink data of the terminal device exists in the second resource through the first instruction information, the complexity of blind detection of the network device can be reduced, and the efficiency of the network device can be improved.
  • the second resource is pre-configured by the network device, so the network device can determine the location of the second resource, and the network device can also determine the second resource based on the association between the first instruction information and the second resource. No longer.
  • the terminal device may not notify the network device in advance whether to send uplink data, which is described in detail below.
  • the network device may determine the coverage condition of the terminal device; the coverage condition is the coverage level or RSRP of the terminal device. If the coverage condition of the terminal device is greater than a preset threshold, the network device may determine fourth information and send the fourth information to the terminal device.
  • the fourth information is used to indicate that the terminal device does not need to send fifth information before sending uplink data in the scheduling-free resource, and the fifth information is used to instruct the terminal device to send uplink data in the scheduling-free resource.
  • the scheduling-free resources are configured by the network device for the terminal device before the terminal device transmits the uplink data.
  • the specific configuration method is not limited in this embodiment of the present application. Before a terminal device sends uplink data in a scheduling-free resource, it does not need to apply to the network device for using the scheduling-free resource. After the network device is configured with the scheduling-free resource, whether the terminal device uses the scheduling-free resource and how to use the scheduling-free resource are not limited by the network device.
  • the network device determines that the coverage level of the terminal device is the coverage enhancement level 0, it determines that the terminal device is in good coverage, and the network device may indicate that the terminal device does not need to send the fifth information by sending fourth information.
  • the network device can perform activity detection on the terminal device based on the DMRS, or the uplink data sent by the terminal device occupies less RU and repetition. Even if the network device blindly decodes uplink data of the terminal device, the cost is not large, so the terminal device may not need to send the fifth information to the network device at this time.
  • the terminal device receives the fourth information sent by the network device. If it is determined according to the fourth information that the fifth information does not need to be sent, the terminal device does not send the first information before sending the uplink data. Five messages. Conversely, if it is determined that the fifth information needs to be sent according to the fourth information, the terminal device sends the fifth information before sending the uplink data.
  • the terminal device sends uplink data in the scheduling-free resources of each period of the periodic scheduling-free resources, it does not send the uplink data before sending the uplink data in the scheduling-free resources in each period.
  • the fifth information is used to instruct the terminal device to send uplink data in a scheduling-free resource.
  • the terminal device may not send the fifth information but directly send the uplink data.
  • a network device configures a periodic scheduling-free resource for a terminal device. If the terminal device sends uplink data through the scheduling-free resource in each period of the periodic scheduling-free resource, the network device can It is determined that the terminal device will periodically send uplink data. At this time, the terminal device may not need to send the fifth information to the network device before sending the uplink data.
  • the terminal device may not send the fifth information in the above-mentioned situation, which not only reduces the power consumption of the terminal device, network resource overhead, but also reduces the complexity of blind detection of the network device.
  • the communication apparatus 700 includes a processing unit 701 and a transceiver unit 702.
  • a processing unit 701 configured to determine a first resource; when determining to perform uplink data transmission through the second resource, determine first instruction information for instructing the terminal device to perform uplink data transmission through the second resource;
  • the transceiver unit 702 is configured to send first indication information to a network device through the first resource; and perform uplink data transmission through the second resource.
  • the transceiver unit 702 is further configured to receive first information sent by the network device, where the first information is used to indicate the at least one indication information configured by the network device.
  • First indication information ;
  • the processing unit 701 is specifically configured to determine the first instruction information from the at least one instruction information according to the first information.
  • the transceiver unit 702 before the transceiver unit 702 performs uplink data transmission through the second resource, it is further configured to:
  • the second resource configuration information indicates at least one resource for uplink data transmission, and each resource of the at least one resource is associated with one indication information;
  • the processing unit 701 is further configured to determine, among the at least one resource, a resource associated with the first indication information as the second resource.
  • the transceiver unit 702 before the transceiver unit 702 performs uplink data transmission through the second resource, it is further configured to: receive second resource configuration information sent by a network device; the second resource configuration information indicates that the At least one resource for uplink data transmission; receiving second information sent by a network device, the second information is used to indicate the second resource from the at least one resource;
  • the processing unit 701 is further configured to determine the second resource from the at least one resource according to the second information.
  • the sending and receiving unit 702 before the sending and receiving unit 702 performs uplink data transmission through the second resource, it is further configured to receive second resource configuration information sent by a network device; the second resource configuration information indicates that At least one resource for uplink data transmission;
  • the processing unit 701 is further configured to select one resource from the at least one resource as the second resource.
  • processing unit 701 is further configured to:
  • the processing unit 701 is configured to determine the first resource, including:
  • N is An integer greater than 0;
  • the first reference position is a start position of an earliest resource among the at least one resource;
  • N is an integer greater than 0.
  • the transceiver unit 702 is further configured to:
  • the processing unit 701 is configured to determine the first resource, and includes: being configured to be located before a second reference position, and a time interval between an end position and the second reference position is the second preset time interval For resources corresponding to N time units, as the first resource, N is an integer greater than 0; and the second reference position is a starting position of the second resource.
  • the first indication information is one of the following or a combination of at least one of the following:
  • the first indication information further indicates at least one of the following information:
  • the identifier of the terminal device The identifier of the terminal device; the MCS of the uplink data; the TBS of the uplink data; and the number of repetitions of the uplink data.
  • FIG. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the communication device shown in FIG. 8 may be an implementation manner of a hardware circuit of the communication device shown in FIG. 7.
  • the communication device may be applied to the flowchart shown in FIG. 2 to execute the functions of the terminal device in the foregoing method embodiment.
  • FIG. 8 shows only the main components of the communication device.
  • the communication device may be a terminal device or a device in the terminal device, such as a chip or a chip system, where the chip system includes at least one chip, and the chip system may further include other circuit structures and / or Discrete devices.
  • the communication device is a terminal device. As shown in FIG.
  • the communication device 800 includes a processor 801, a memory 802, a transceiver 803, an antenna 804, and an input / output device 805.
  • the processor 801 is mainly used to process communication protocols and communication data, and control the entire wireless communication device, execute a software program, and process data of the software program, for example, to support the wireless communication device to execute the methods described in the foregoing method embodiments. Action, etc.
  • the memory 802 is mainly used to store software programs and data.
  • the transceiver 803 is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals.
  • the antenna 804 is mainly used for transmitting and receiving radio frequency signals in the form of electromagnetic waves.
  • the input / output device 805, such as a touch screen, a display screen, a keyboard, etc., is mainly used to receive data input by the user and output data to the user.
  • a processor 801 configured to determine a first resource; when determining to perform uplink data transmission through a second resource, determine first instruction information for instructing a terminal device to perform uplink data transmission through the second resource;
  • the transceiver 803 is configured to send first indication information to a network device through the first resource; and perform uplink data transmission through the second resource.
  • the transceiver 803 is specifically configured to:
  • the processor 801 is specifically configured to determine the first indication information from the at least one indication information according to the first information.
  • the transceiver 803 before the transceiver 803 performs uplink data transmission through the second resource, it is further configured to:
  • the second resource configuration information indicates at least one resource for uplink data transmission, and each resource of the at least one resource is associated with one indication information;
  • the processor 801 is further configured to determine a resource associated with the first indication information among the at least one resource as the second resource.
  • the transceiver 803 before the transceiver 803 performs uplink data transmission through the second resource, it is further configured to:
  • the processor 801 is further configured to determine the second resource from the at least one resource according to the second information.
  • the transceiver 803 before the transceiver 803 performs uplink data transmission through the second resource, it is further configured to receive second resource configuration information sent by a network device; the second resource configuration information indicates that the At least one resource for uplink data transmission;
  • the processor 801 is further configured to select a resource from the at least one resource as the second resource.
  • the processor 801 is further configured to:
  • the processor 801 is configured to determine the first resource, including:
  • N is An integer greater than 0;
  • the first reference position is a start position of an earliest resource among the at least one resource;
  • N is an integer greater than 0.
  • the transceiver 803 is further configured to receive third information sent by a network device, where the third information indicates a second preset time interval;
  • the processor 801 is configured to determine the first resource, which is used to be located before a second reference position, and a time interval between an end position and the second reference position is N of the second preset time interval For resources corresponding to each time unit, as the first resource, N is an integer greater than 0; and the second reference position is a starting position of the second resource.
  • the first indication information is one of the following or a combination of at least one of the following:
  • the first indication information further indicates at least one of the following information:
  • the identifier of the terminal device The identifier of the terminal device; the MCS of the uplink data; the TBS of the uplink data; and the number of repetitions of the uplink data.
  • the communication apparatus may be configured to perform actions of the terminal device in the foregoing method embodiments.
  • the communication apparatus 900 includes a processing unit 901 and a transceiver unit 902.
  • a processing unit 901 configured to receive, in a first resource, first instruction information sent by a terminal device and used to instruct the terminal device to perform uplink data transmission through a second resource, and determine the information according to the first instruction information The terminal device performs uplink data transmission through the second resource;
  • the transceiver unit 902 is configured to receive uplink data sent by the terminal device in the second resource, and demodulate the received uplink data.
  • the network device of the transceiver unit 902 before the network device of the transceiver unit 902 receives the first instruction information sent by the terminal device in the first resource, it is further configured to:
  • the first resource configuration information indicates the first resource.
  • the transceiver unit 902 before the transceiver unit 902 receives the first indication information sent by the terminal device in the first resource, it is further configured to:
  • the second resource configuration information indicates at least one resource used for uplink data transmission.
  • each of the at least one resource is associated with one indication information.
  • the transceiver unit 902 before receiving and receiving the first instruction information sent by the terminal device in the first resource, the transceiver unit 902 is further configured to:
  • the transceiver unit 902 before receiving and receiving the first instruction information sent by the terminal device in the first resource, the transceiver unit 902 is further configured to:
  • the second information further indicates a resource type of the second resource; the resource type includes an exclusive resource and a shared resource; and the exclusive resource is a resource on the network device.
  • the resource type includes an exclusive resource and a shared resource; and the exclusive resource is a resource on the network device.
  • the shared resource is a resource allocated to at least two terminal devices in a cell of the network device.
  • the first indication information is one of the following or a combination of at least one of the following:
  • the first indication information further indicates at least one of the following information:
  • the identifier of the terminal device The identifier of the terminal device; the MCS of the uplink data; the TBS of the uplink data; and the number of repetitions of the uplink data.
  • FIG. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the communication device shown in FIG. 10 may be an implementation manner of a hardware circuit of the communication device shown in FIG. 9.
  • the communication device may be applicable to the flowchart shown in FIG. 2 to execute the functions of the network device in the foregoing method embodiment.
  • FIG. 10 shows only the main components of the communication device.
  • the communication device may be a network device or a device in the network device, such as a chip or a chip system, where the chip system includes at least one chip, and the chip system may further include other circuit structures and / or Discrete devices.
  • the communication device is a network device as an example.
  • the communication device 1000 includes a processor 1001, a memory 1002, a transceiver 1003, an antenna 1004, and the like.
  • a processor 1001 configured to receive, in a first resource, first instruction information sent by a terminal device and used to instruct the terminal device to perform uplink data transmission through a second resource, and determine the first resource The terminal device performs uplink data transmission through the second resource;
  • the transceiver 1003 is configured to receive uplink data sent by the terminal device in the second resource, and demodulate the received uplink data.
  • the transceiver 1003 network device before the transceiver 1003 network device receives the first instruction information sent by the terminal device in the first resource, it is further configured to:
  • the first resource configuration information indicates the first resource.
  • the transceiver 1003 before the transceiver 1003 receives the first instruction information sent by the terminal device in the first resource, it is further configured to:
  • the second resource configuration information indicates at least one resource used for uplink data transmission.
  • each of the at least one resource is associated with one indication information.
  • the transceiver 1003 before the transceiver 1003 receives the first instruction information sent by the terminal device in the first resource, it is further configured to:
  • the transceiver 1003 before the transceiver 1003 receives the first instruction information sent by the terminal device in the first resource, it is further configured to:
  • the second information further indicates a resource type of the second resource; the resource type includes an exclusive resource and a shared resource; and the exclusive resource is a resource on the network device.
  • the resource type includes an exclusive resource and a shared resource; and the exclusive resource is a resource on the network device.
  • the shared resource is a resource allocated to at least two terminal devices in a cell of the network device.
  • the first indication information is one of the following or a combination of at least one of the following:
  • the first indication information further indicates at least one of the following information:
  • the identifier of the terminal device The identifier of the terminal device; the MCS of the uplink data; the TBS of the uplink data; and the number of repetitions of the uplink data.
  • this application may be provided as a method, a system, or a computer program product. Therefore, this application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, this application may take 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 code.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to work in a particular manner such that the instructions stored in the computer-readable memory produce a manufactured article including an instruction device, the instructions
  • the device implements the functions specified in one or more flowcharts 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)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un appareil de communication. Le procédé comprend : un dispositif terminal détermine une première ressource; lorsqu'il est déterminé qu'une transmission de données de liaison montante est effectuée au moyen d'une seconde ressource, le dispositif de terminal détermine des premières informations d'instruction pour ordonner au dispositif de terminal d'effectuer une transmission de données de liaison montante au moyen de la seconde ressource, et envoie les premières informations d'instruction à un dispositif de réseau au moyen de la première ressource; et le dispositif terminal effectue une transmission de données de liaison montante au moyen de la seconde ressource.
PCT/CN2018/108491 2018-09-28 2018-09-28 Procédé et appareil de communication WO2020062105A1 (fr)

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