WO2019157744A1 - Procédé et dispositif de transmission de données - Google Patents

Procédé et dispositif de transmission de données Download PDF

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Publication number
WO2019157744A1
WO2019157744A1 PCT/CN2018/076886 CN2018076886W WO2019157744A1 WO 2019157744 A1 WO2019157744 A1 WO 2019157744A1 CN 2018076886 W CN2018076886 W CN 2018076886W WO 2019157744 A1 WO2019157744 A1 WO 2019157744A1
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WIPO (PCT)
Prior art keywords
frequency resource
field
offset
value
terminal device
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PCT/CN2018/076886
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English (en)
Chinese (zh)
Inventor
南方
余政
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华为技术有限公司
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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 CN201880088025.8A priority Critical patent/CN111656843B/zh
Priority to PCT/CN2018/076886 priority patent/WO2019157744A1/fr
Publication of WO2019157744A1 publication Critical patent/WO2019157744A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a data transmission method and device.
  • LTE long term evolution
  • MTC machine type communication
  • LTE machine type communication
  • MTC refers to the acquisition of information in the physical world by deploying various devices with certain sensing, computing, execution and communication capabilities, and realizes information transmission, coordination and processing through the network, thereby realizing the interconnection of people, objects and objects.
  • the transmission and reception bandwidths supported by the terminal equipment applied to the MTC are smaller than the system bandwidth.
  • the related technology divides a number of narrowbands in the system bandwidth, so that the terminal equipment supporting the MTC is in a narrowband. transfer data.
  • the following is a terminal device that supports the MTC service, and the terminal device that does not support the MTC service in the LTE system is referred to as a legacy terminal device.
  • the position of the narrowband divided in the system bandwidth is fixed. Therefore, the terminal device supporting the MTC can only transmit data in the narrowband, and the frequency resource used for the data transmission of the terminal device supporting the MTC is insufficient. Flexible, which in turn may affect the data transmission of traditional terminal devices.
  • the embodiment of the present invention provides a data transmission method and device, which are used to solve the problem that the narrowband of the existing system bandwidth is fixed, and the terminal device supporting the MTC can only transmit data in a narrowband, and the frequency resource used for data transmission is insufficient. Flexible issues.
  • the embodiment of the present application provides a data transmission method, where the method includes: the network device sends first downlink control information (DCI) to the terminal device, where the first DCI includes the first field and the first a second field, where the first field is used to indicate the first frequency resource, the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, and the terminal device receives the first DCI sent by the network device, and according to the The first field and the second field included in the DCI determine the second frequency resource, the network device sends the downlink data to the terminal device in the second frequency resource, and the terminal device receives the downlink data sent by the network device on the second frequency resource, or The terminal device sends uplink data to the network device on the second frequency resource, and the network device receives the uplink data sent by the terminal device in the second frequency resource.
  • DCI downlink control information
  • the network device can flexibly configure the frequency resource in the system bandwidth for the terminal device.
  • the method of the present application is the most traditional terminal device. Maximizing throughput is possible with the remaining physical resource blocks (PRBs).
  • the terminal device can send or receive data on the second frequency resource.
  • the method provided by the present application is not necessarily limited to being transmitted in a narrowband. Data, the frequency resources used for data transmission are more flexible.
  • the embodiment of the present application provides another data transmission method, where the method includes: when the network device determines that the coverage enhancement mode of the terminal device is the coverage enhancement mode B (CE mode B), to the terminal device Sending a first DCI, where the first DCI includes a first field and a second field, where the first field is used to indicate the first frequency resource, and the second field is used to indicate the offset state between the second frequency resource and the first frequency resource,
  • the terminal device receives the first DCI sent by the network device, and determines the second frequency resource according to the first field and the second field included in the first DCI, where the network device sends the downlink data to the terminal device in the second frequency resource, where the terminal device is in the first
  • the second frequency resource receives the downlink data sent by the network device, or the terminal device sends the uplink data to the network device on the second frequency resource, and the network device receives the uplink data sent by the terminal device in the second frequency resource.
  • the network device sends a second DCI to the terminal device, where the coverage enhancement mode of the terminal device is the coverage enhancement mode A (CE mode A), where the second DCI includes a third field, where the third field is used.
  • the coverage enhancement mode of the terminal device is the coverage enhancement mode A (CE mode A)
  • the second DCI includes a third field, where the third field is used.
  • Indicates a third frequency resource where the third frequency resource includes consecutive N PRBs in the system bandwidth, and N is one of 1, 2, 3, 4, 5, and 6, and the terminal device receives the second DCI sent by the network device, and Determining a third frequency resource according to the third field included in the second DCI, where the network device sends the downlink data to the terminal device, where the terminal device receives the downlink data sent by the network device, or the terminal device
  • the uplink data is sent to the network device on the third frequency resource, and the network device receives the uplink data sent by the terminal device in the third frequency resource.
  • the network device can determine, by using the coverage enhancement mode of the terminal device, which frequency resource is configured for the terminal device. Specifically, when determining that the coverage enhancement mode of the terminal device is CE mode B, configuring the second frequency resource for the terminal device, The method provided by the present application may be configured to send or receive data on the second frequency resource, and the method provided by the present application may be configured to be sent by the terminal device flexibly or compared to the method in the prior art that the data may be sent or received only in the first frequency resource.
  • the coverage enhancement mode of the terminal device is CE mode A
  • configuring a third frequency resource for the terminal device where the third frequency resource is a continuous N PRBs in the system bandwidth, the continuous
  • the N PRBs may be PRBs in different narrowbands, and may not be all PRBs in the narrowband.
  • the method provided by the present application is a terminal.
  • the device configures consecutive N PRBs in the system bandwidth, thereby implementing a flexible configuration of the terminal device to transmit or receive data. Resources.
  • how the second field indicates the offset state between the second frequency resource and the first frequency resource is not limited.
  • a plurality of bits mapped by the second field may indicate different offset states between the second frequency resource and the first frequency resource, and may also indicate the second frequency by using different values corresponding to one bit of the second field mapping. A different offset state between the resource and the first frequency resource.
  • the second field is used to indicate that the offset state between the second frequency resource and the first frequency resource includes: when the bit of the second field mapping is the first value, the second field indicates The second frequency resource is not offset from the first frequency resource; when the bit of the second field mapping is the second value, the second field indicates that the second frequency resource is offset from the first frequency resource.
  • the bits mapped by the second field take different values to indicate that the second frequency resource is not offset and offset from the first frequency resource, and the network device can send or receive data through the DCI for the flexible configuration of the terminal device.
  • the second frequency resource while the specific relative positional relationship between the second frequency resource and the first frequency resource is indicated by the DCI, the bit overhead of the DCI can be saved by the method of the present application.
  • the value of the bit mapped by the second field is a first value; and/or, the resources in the second frequency resource are not all in a narrow band.
  • the value of the bit mapped by the second field is the second value. That is, in the case that the second frequency resource is a resource within a narrow band, the second field indicates that the second frequency resource is not offset from the first frequency resource, and the second frequency resource is not all resources within a narrow band. In case, the second field indicates that the second frequency resource is offset from the first frequency resource.
  • the terminal device determines the second frequency resource according to the first field and the second field, including: when the bit of the second field mapping is the first value, determining the first frequency resource as the second frequency When the value of the second field mapping is a second value, the first frequency resource is offset from the first offset by the first offset to obtain the second frequency resource.
  • the first offset direction is preset, or the first offset direction is configured by high layer signaling; and the first offset is a preset value, or the first offset is The value configured by higher layer signaling.
  • the terminal device may offset the first frequency resource according to the preset first offset direction and the first offset.
  • the second frequency resource may also be offset from the first frequency resource to obtain the second frequency resource according to the first offset direction and the first offset configured by the network device by the high layer signaling.
  • the number of bits mapped by the second field is 1.
  • the second field is used to indicate that the offset state between the second frequency resource and the first frequency resource includes: when the bit of the second field mapping is the first value, the second field Instructing the second frequency domain resource to be offset from the direction in which the first frequency domain resource decreases to the PRB number; when the bit of the second field mapping is the second value, the second field indicates that the second frequency domain resource is relative to the first frequency domain The resource is offset in the direction in which the PRB number increases.
  • the bit value of the second field mapping is used to indicate that the second frequency resource is offset from the direction in which the first frequency resource decreases to the PRB number and the direction in which the PRB number is increased.
  • the DCI is configured to flexibly configure the second frequency resource for sending or receiving data, and the bit length of the DCI can be saved by using the method of the present application as compared with the specific relative positional relationship between the second frequency resource and the first frequency resource. .
  • the terminal device determines the second frequency resource according to the first field and the second field, including: when the value of the second field mapping is a first value, the first frequency resource is reduced to the PRB number.
  • the direction offsets the second offset to obtain the second frequency resource; when the bit of the second field map is the second value, the first frequency resource is offset from the direction in which the PRB number is increased by the third offset.
  • the second offset is a preset value, or the second offset is a value configured by higher layer signaling; and the third offset is a preset value, or The third offset is a value configured by higher layer signaling.
  • the terminal device may offset the first frequency resource according to the preset second offset.
  • the frequency resource may also be offset from the first frequency resource to obtain the second frequency resource according to the second offset configured by the network device by the high layer signaling.
  • the terminal device may offset the first frequency resource to obtain the second frequency resource according to the preset third offset.
  • the first frequency resource may also be offset to obtain the second frequency resource according to a third offset configured by the network device by the high layer signaling.
  • the first signaling may be sent to the terminal device, where the terminal device receives the first signaling sent by the network device, where the first signaling is high layer signaling.
  • the first signaling includes first information, where the first information is used to indicate that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource.
  • the network device may send a high-level signaling to the terminal device, indicating that the second field is included in the first DCI, and is used to indicate an offset state of the second frequency resource relative to the first frequency resource.
  • the terminal device may be instructed by the higher layer signaling to receive the first DCI, and of course, the high layer signaling may be used to instruct the terminal device to receive the DCI that does not include the second field.
  • the second frequency resource may be offset from the first frequency resource by using the high layer signaling, and the second frequency resource may also be indicated by the higher layer signaling not to be offset from the first frequency resource.
  • the terminal device may be instructed to perform resource offset by using the high layer signaling, and of course, the high layer signaling may be used to indicate that the terminal device does not perform resource offset.
  • the terminal device may not parse the first in the first DCI.
  • the second field, or the terminal device receives the DCI that does not include the second field.
  • the terminal device receives the first DCI.
  • the first offset direction is a direction in which the PRB number is decreased; or, the first offset direction is a direction in which the PRB number is increased; or, the first frequency resource is located at a system bandwidth center frequency PRB
  • the first offset direction is the direction in which the PRB number decreases; and in the case where the first frequency resource is located on the side where the system bandwidth center frequency PRB number increases, the first offset The direction is the direction in which the PRB number is increased; or, in the case where the first frequency resource is located on the side where the PRB number of the system bandwidth center frequency point is decreased, the first offset direction is the direction in which the PRB number is increased;
  • the first offset direction is the direction in which the PRB number decreases.
  • the first offset direction has a corresponding relationship with at least one of a system bandwidth, a narrow band in which the first frequency resource is located, or a type of the second frequency resource.
  • the second frequency resource type includes a physical uplink shared channel (PUSCH) frequency resource and a physical downlink shared channel (PDSCH) frequency resource.
  • PUSCH physical uplink shared channel
  • PDSCH physical downlink shared channel
  • the first offset, the second offset, and the third offset respectively exist with at least one of a system bandwidth, a narrowband where the first frequency resource is located, and a type of the second frequency resource. Correspondence relationship.
  • the type of the second frequency resource includes a PUSCH frequency resource and a PDSCH frequency resource.
  • the embodiment of the present application provides a network device, where the network device has a function of implementing the behavior of the network device in the foregoing first aspect and the method example in the second aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the network device includes a transceiver unit and a processing unit, and the units may perform the corresponding functions in the first aspect and the method examples in the second aspect.
  • the units may perform the corresponding functions in the first aspect and the method examples in the second aspect. For details, refer to the detailed description in the method example. Make a statement.
  • the embodiment of the present application provides a network device, where the network device has a function of implementing the behavior of the network device in the foregoing first aspect and the method example in the second aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the modules can be software and/or hardware.
  • the network device includes a memory, a transceiver, a processor, and a bus, wherein the memory, the transceiver, and the processor are connected by the bus; the processor call is stored in the The instructions in the memory perform the above method.
  • the embodiment of the present application provides a terminal device, where the terminal device has a function of implementing the behavior of the terminal device in the foregoing first aspect and the method example in the second aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the terminal device includes a transceiver unit and a processing unit, and the units can perform the corresponding functions in the foregoing first aspect and the method example in the second aspect.
  • the terminal device includes a transceiver unit and a processing unit, and the units can perform the corresponding functions in the foregoing first aspect and the method example in the second aspect.
  • the units can perform the corresponding functions in the foregoing first aspect and the method example in the second aspect.
  • the embodiment of the present application provides a terminal device, where the terminal device has a function of implementing the behavior of the terminal device in the foregoing first aspect and the method example in the second aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the modules can be software and/or hardware.
  • the structure of the terminal device includes a memory, a transceiver, a processor, and a bus, wherein the memory, the transceiver, and the processor are connected by the bus; the processor call is stored in the The instructions in the memory perform the above method.
  • the embodiment of the present application further provides a computer storage medium, where the computer storage medium stores computer executable instructions, when the computer executable instructions are invoked by a computer, causing the computer to perform the first aspect.
  • a computer program product is further provided in the embodiment of the present application, where the computer program product stores an instruction, when the computer program runs on the computer, causing the computer to perform the first aspect, the second aspect, or the first Aspect, the method of any one of the possible aspects of the second aspect.
  • a communication apparatus for performing a function of a terminal device or a network device in practice in the above method.
  • These functions can be implemented in hardware or in software by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of dividing a narrowband and an RBG in a system bandwidth according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of resource allocation according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of another resource allocation according to an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a data transmission method according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic flowchart of another data transmission method according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of resource allocation according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another resource allocation according to an embodiment of the present application.
  • FIG. 9 is still another schematic diagram of resource allocation according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of still another resource allocation according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of another network device according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of another terminal device according to an embodiment of the present disclosure.
  • a terminal device is a device that provides voice and/or data connectivity to a user, and is also called a user equipment (UE), a mobile station (MS), and a mobile terminal (MT). Wait.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • Wait For example, a handheld device having a wireless connection function, an in-vehicle device, or the like.
  • terminals are: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality.
  • augmented reality, AR equipment
  • wireless terminals in industrial control wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid Wireless terminal, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, bandwidth-reduced low-complexity UE, BL UE), coverage enhancement UE (CE UE), and the like.
  • a network device refers to a device in a wireless network, for example, a radio access network (RAN) node (or device) that connects a terminal device to a wireless network, and may also be referred to as a base station.
  • RAN nodes are: a continuation of evolved Node B (gNB), a transmission reception point (TRP), an evolved Node B (eNB), and a radio network controller (radio network controller, RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB) , a base band unit (BBU), or a wireless fidelity (Wifi) access point (AP).
  • gNB evolved Node B
  • TRP transmission reception point
  • eNB evolved Node B
  • RNC radio network controller
  • Node B Node B
  • BSC base station controller
  • BTS base transceiver station
  • home base station for example, home evolved NodeB,
  • the RAN may include a centralized unit (CU) node and a distributed unit (DU) node.
  • CU centralized unit
  • DU distributed unit
  • This structure separates the protocol layer of the eNB in the long term evolution (LTE) system, and the functions of some protocol layers are centrally controlled in the CU, and the functions of the remaining part or all of the protocol layers are distributed in the DU by the CU. Centrally control the DU.
  • LTE long term evolution
  • Interaction refers to the process in which the two parties exchange information with each other.
  • the information transmitted here may be the same or different.
  • the two parties are the base station 1 and the base station 2, and the base station 1 may request information from the base station 2, and the base station 2 provides the base station 1 with the information requested by the base station 1.
  • the base station 1 and the base station 2 may request information from each other, and the information requested here may be the same or different.
  • the data transmission method and device provided by the embodiments of the present application can be applied to a communication system, where an entity that transmits uplink and downlink data, and an entity that receives uplink and downlink data exist.
  • the entity that sends the downlink data is the network device
  • the entity that receives the downlink data is the terminal device
  • the entity that sends the uplink data is the terminal device
  • the entity that receives the uplink data is the network device.
  • the entity that receives the uplink data is the network device.
  • the data transmission method provided by the embodiment of the present application can be applied to an LTE system or an LTE-A system supporting MTC services.
  • the system architecture includes a network device and a terminal device 1 to a terminal device 6 .
  • the network device can be understood as an entity used by the network to send or receive signals, and can be sent to the terminal device 1 .
  • the terminal device 6 transmits downlink data, and may also receive uplink data transmitted by the terminal device 1 to the terminal device 6.
  • the terminal device 1 to the terminal device 6 may be any type of terminal device, for example, a BL UE and a CE UE that support the MTC service.
  • the terminal device that supports the MTC service is not supported, and the MTC service is not supported in the LTE system.
  • the terminal device is referred to as a legacy terminal device.
  • the terminal devices involved refer to the terminal device supporting the MTC service.
  • system architecture shown in FIG. 1 is only taken as an example of including a network device, but the embodiment of the present application is not limited thereto.
  • more network devices may be included in the system architecture; similarly, the system More terminal devices may also be included in the architecture, and may also include other devices.
  • the communication system to which the solution in the embodiment of the present application is applied may be an LTE system or an LTE-A system.
  • the solution in the embodiment of the present application may also be applied to other wireless communication systems, for example, 5G New Radio (NR) network.
  • NR 5G New Radio
  • the corresponding names of the network device and the terminal device involved in the embodiment of the present application may be names of corresponding functions in the wireless communication network.
  • the network device can communicate with any of the terminal devices 1 to 6 .
  • the terminal device 3 is configured to transmit the downlink resource data by using the DCI, and then the downlink data is sent to the terminal device 3 on the configured frequency resource, and the terminal device 3 can receive the downlink data on the configured frequency resource, and similarly,
  • the uplink transmission between the network device and the terminal device 3 is taken as an example.
  • the terminal device 4 Before the terminal device 3 sends the uplink data to the network device, the terminal device needs to receive the frequency resource configured by the network device for transmitting the uplink data through the DCI, and in the configuration.
  • the uplink resource is sent to the network device on the frequency resource, and the network device receives the uplink data on the frequency resource.
  • the terminal device 4 to the terminal device 6 may also constitute a communication subsystem. Taking the downlink transmission between the network device and the terminal device as an example, the network device sends downlink data to the terminal device 1, the terminal device 2, the terminal device 3, the terminal device 5, etc.; the terminal device 5 can send downlink data to the terminal device 4 and the terminal.
  • the device 6; the terminal device 4 and the terminal device 6 receive the downlink data transmitted by the terminal device 5.
  • the network device can only configure the frequency resources in the narrowband to transmit the uplink or downlink data for the terminal device supporting the MTC service, and the narrowband of the existing system bandwidth is fixed, resulting in the terminal device supporting the MTC service.
  • the uplink or downlink data can only be transmitted in a narrow band, so that the frequency resources used for data transmission are not flexible enough, which may affect the data transmission of the traditional terminal device.
  • the system bandwidth of the LTE system may be one of 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, and 20 MHz, and the above system bandwidth includes 6, 15, 25, 50, 75, respectively. 100 PRBs.
  • the BL UE/CE UE can support a physical uplink shared channel (PUSCH) or a physical downlink shared channel (PDSCH) bandwidth of 1.4 MHz.
  • PUSCH physical uplink shared channel
  • PDSCH physical downlink shared channel
  • some BL UE/CE UEs can support 5 MHz PUSCH and/or PDSCH bandwidth.
  • a number of narrowbands are divided in the system bandwidth.
  • a narrow band contains a frequency width of six consecutive PRBs in frequency.
  • the following line transmission is an example, which is common in the downlink system bandwidth.
  • Narrowband where Indicates the number of downlink PRBs included in the downlink system bandwidth. Indicates a rounding down operation.
  • Narrowbands in the system bandwidth are numbered in the order in which the PRB numbers are incremented, that is, a narrowband number or a narrowband index, and the narrowband index is expressed as Narrowband partitioning in various system bandwidths, as shown in FIG. 2, for example, for a system bandwidth of 3 MHz, a narrowband with an index of 0 contains PRBs numbered 1-6.
  • the network device configures frequency resources for transmitting data through different formats of DCI. Specifically, the narrowband allocated to the CE UE and the PRB allocated in the narrowband are indicated by the bits included in the DCI.
  • the network device allocates the PUSCH resource to the CE UE in the CE mode A coverage mode by using the DCI format 6-0A. For the CE UE supporting the maximum PUSCH bandwidth of 1.4 MHz, the network device allocates 1, 2, 2 within a narrow band. 3, 4, 5, or 6 PRBs. The network device allocates PUSCH resources to CE UEs in CE mode B coverage mode through DCI format 6-0B, and allocates 1 or 2 PRBs within a narrow band for CE UEs supporting 1.4 MHz maximum PUSCH bandwidth. The network device allocates PDSCH resources to CE UEs in CE mode A coverage mode through DCI format 6-1A, and allocates 1, 2, 3, 4, 5 within a narrow band for CE UEs supporting 1.4 MHz maximum PDSCH bandwidth.
  • the network device allocates PDSCH resources for CE UEs in CE mode B coverage mode through DCI format 6-1B, and allocates 4 or 6 PRBs within a narrow band for CE UEs supporting 1.4 MHz maximum PDSCH bandwidth.
  • the resource allocation type 0 can provide the most efficient spectrum utilization and the highest throughput for a single terminal device, and thus is a commonly used resource allocation type.
  • a resource block group (RBG) is allocated in the system bandwidth
  • resource block allocation information included in the DCI is used to indicate an RBG allocated for the PDSCH
  • the resource block allocation information includes N RBGs .
  • Bit each bit corresponds to one RBG, and the value of each bit indicates whether the corresponding RBG is allocated to the PDSCH of the terminal device.
  • An RBG is composed of P consecutive centralized virtual resource blocks (VRBs), and one VRB and PRB have the same size. Wherein localized VRB directly mapped to PRB, the VRB number n-number n PRB-VRB corresponds to the PRB.
  • the number of RBGs included in the downlink system bandwidth is represented as N RBG .
  • the number of VRBs included in RBG is P, if Then the number of VRBs included in one RBG is among them, It represents the rounding operation, and mod represents the modulo operation.
  • the value of P is related to the system bandwidth, as shown in Table 1.
  • the RBG partitioning in various system bandwidths is shown in Figure 2.
  • Table 1 Examples of correspondence between the value of P and the number of PRBs included in the system bandwidth
  • the boundary of the narrow band and the boundary of the RBG may be misaligned, for example, as shown in FIG. 3, taking a 10 MHz system bandwidth as an example, when a subframe needs to allocate resources for a legacy UE and a BL UE/CE UE, if an index The narrowband of 1 is allocated to the BL UE/CE UE, that is, the PRBs numbered 7-12 are allocated to the BL UE/CE UE, and the RBGs numbered 2, 3, and 4 cannot be allocated to the legacy UE, and the legacy terminal equipment PRB6, PRB13, and PRB14 cannot be used, that is, the legacy terminal device cannot utilize the remaining PRBs at the most, and the throughput cannot be maximized.
  • a continuous PRB For uplink data of a legacy terminal device, a continuous PRB needs to be allocated in the system bandwidth. Allocating the uplink PRB in the narrowband to the BL UE/CE UE according to the existing narrowband allocation may cause fragmentation of uplink resources in the system bandwidth. As shown in FIG. 4, the 10 MHz system bandwidth is used as an example.
  • the PRB numbered 7 to 12 is allocated to the BL UE/CE UE, and the number is 0 to If the PRB of the 5 is a physical random access channel (PRACH) resource, the PRB numbered 6 and the PRB numbered 13 to 49 are discontinuous, and cannot be simultaneously used as uplink resources of the same legacy terminal device, resulting in a legacy terminal. The device cannot utilize the remaining PRBs at the most and cannot maximize throughput.
  • PRACH physical random access channel
  • the position of the narrowband divided in the system bandwidth is fixed. Therefore, the terminal device supporting the MTC can only transmit data in the narrowband, and the data transmission of the terminal device supporting the MTC is adopted.
  • the frequency resources are not flexible enough, which may cause fragmentation of frequency resources in the system bandwidth, which may cause the traditional terminal equipment to not utilize the remaining PRBs at the most, and cannot maximize the throughput.
  • the present application provides a data transmission method, which is used to solve the problem that the narrowband of the existing system bandwidth is fixed, and the terminal device supporting the MTC can only transmit data in a narrowband, and the frequency resource used for data transmission is not flexible.
  • the traditional terminal device cannot utilize the remaining PRBs at the most, and the problem of throughput cannot be maximized.
  • the frequency resource in the narrowband allocated by the network device to the terminal device may be referred to as the first frequency resource for convenience of description.
  • the network device sends a first DCI to the terminal device, where the terminal device receives the first DCI sent by the network device.
  • the first DCI includes a first field and a second field, where the first field is used to indicate the first frequency resource, and the second field is used to indicate the offset state between the second frequency resource and the first frequency resource.
  • the offset state between the second frequency resource and the first frequency resource may include: the second frequency resource is offset from the first frequency resource, and the second frequency resource is not offset from the first frequency resource; or The second frequency resource is offset from the first frequency resource in a direction in which the PRB number decreases, and the second frequency resource is offset from the first frequency resource in a direction in which the PRB number increases.
  • the first DCI sent by the network device to the terminal device includes a second field indicating an offset state between the second frequency resource and the first frequency resource, so that the terminal device is configured according to the first frequency resource. And the offset state indicated by the second field determines the location of the second frequency resource, and then sends the uplink data or receives the downlink data on the second frequency resource.
  • the second frequency resource is the PUSCH resource
  • the terminal device receives the downlink data on the second frequency resource, the second frequency resource is the PDSCH resource.
  • the terminal device determines the second frequency resource according to the first field and the second field included in the first DCI.
  • the terminal device may determine the second frequency resource according to the first field and the second field included in the first DCI.
  • the first frequency resource may be determined according to the indication of the first field
  • the second frequency resource may be determined according to the first frequency resource and the offset state of the second frequency resource with respect to the first frequency resource.
  • S103a The network device sends downlink data to the terminal device in the second frequency resource, and the terminal device receives the downlink data sent by the network device on the second frequency resource.
  • the terminal device may receive the downlink data sent by the network device on the second frequency resource, where the second frequency resource is used.
  • the network device can flexibly configure the frequency resource for receiving the downlink data for the terminal device according to the actual application.
  • S103b The terminal device sends uplink data to the network device on the second frequency resource, where the network device receives the uplink data sent by the terminal device.
  • the terminal device may send uplink data to the network device on the second frequency resource, where the second frequency resource is
  • the PUSCH resource is a method for transmitting uplink data only on the first frequency resource.
  • the network device can flexibly configure the terminal device to use the frequency resource for sending uplink data according to the actual application.
  • whether S103a or S103b is specifically executed depends on the type of the second frequency resource. Specifically, when the second frequency resource is the frequency resource of the PUSCH, when S103b is executed and the second frequency resource is the frequency resource of the PDSCH, S103a is executed.
  • FIG. 6 is a schematic flowchart of another data transmission method provided by the present application. As shown in Figure 6, it includes:
  • the network device sends a first DCI to the terminal device, where the network device determines that the coverage enhancement mode of the terminal device is CE mode B, and the terminal device receives the first DCI sent by the network device.
  • the first DCI includes a first field and a second field, where the first field is used to indicate the first frequency resource, and the second field is used to indicate the offset state between the second frequency resource and the first frequency resource.
  • the first DCI sent by the network device to the terminal device includes a second field indicating an offset state between the second frequency resource and the first frequency resource, so that the terminal device is configured according to the first frequency resource and the second
  • the offset state indicated by the field determines the location of the second frequency resource, and then sends uplink data or receives downlink data on the second frequency resource.
  • S202 The terminal device determines the second frequency resource according to the first field and the second field included in the first DCI.
  • the terminal device may determine the second frequency resource according to the first field and the second field included in the first DCI, specifically, according to the indication of the first field. Determining the first frequency resource, and further determining the second frequency resource according to the first frequency resource and the offset state of the second frequency resource relative to the first frequency resource.
  • S203a The network device sends downlink data to the terminal device in the second frequency resource, and the terminal device receives the downlink data sent by the network device on the second frequency resource.
  • the terminal device may receive the downlink data sent by the network device on the second frequency resource, where the second frequency resource is used.
  • the network device can flexibly configure the frequency resource for receiving the downlink data for the terminal device according to the actual application.
  • S203b The terminal device sends uplink data to the network device on the second frequency resource, where the network device receives the uplink data sent by the terminal device in the second frequency resource.
  • the terminal device may send uplink data to the network device on the second frequency resource, where the second frequency resource is
  • the PUSCH resource is a method for transmitting uplink data only on the first frequency resource.
  • the network device can flexibly configure the terminal device to use the frequency resource for sending uplink data according to the actual application.
  • whether S203a or S203b is specifically performed depends on the type of the second frequency resource. Specifically, when the second frequency resource is the frequency resource of the PUSCH, when S203b is executed and the second frequency resource is the frequency resource of the PDSCH, S203a is executed.
  • S204 The network device sends a second DCI to the terminal device, where the network device determines that the coverage enhancement mode of the terminal device is CE mode A, and the terminal device receives the second DCI sent by the network device.
  • the second DCI includes a third field, where the third field is used to indicate the third frequency resource, and the third frequency resource includes consecutive N PRBs in the system bandwidth, where N is 1, 2, 3, 4, 5, and 6. One.
  • the third field may indicate consecutive N PRBs anywhere in the system bandwidth.
  • S205 The terminal device determines the third frequency resource according to the third field included in the second DCI.
  • the terminal device may determine the third frequency resource according to the third field included in the second DCI.
  • S206a The network device sends downlink data to the terminal device in the third frequency resource, and the terminal device receives the downlink data sent by the network device on the third frequency resource.
  • the downlink data that is sent by the network device may be received on the third frequency resource, which is compared to the first frequency resource.
  • a method for receiving downlink data by using the method of the present application, the network device can flexibly configure a frequency resource for receiving downlink data for the terminal device according to an actual application.
  • S206b The terminal device sends uplink data to the network device on the third frequency resource, where the network device receives the uplink data sent by the terminal device in the third frequency resource.
  • the uplink data may be sent to the network device on the third frequency resource, and the uplink data may be sent only on the first frequency resource.
  • the method of the uplink data by the method of the present application, the network device can flexibly configure the frequency resource for sending the uplink data for the terminal device according to the actual application.
  • whether S206a or S206b is specifically executed depends on the type of the third frequency resource. Specifically, when the third frequency resource is the frequency resource of the PUSCH, when S206b is executed and the third frequency resource is the frequency resource of the PDSCH, S206a is executed.
  • S201, S202, and S203a are executed when the coverage enhancement mode of the terminal device is CE mode B.
  • S204, S205, and S206a (S206b) are executed when the coverage enhancement mode of the terminal device is CE mode A.
  • Executing S201, S202, S203a (S203b) in the case where the coverage enhancement mode of the terminal device is CE mode B and S204, S205, S206a (S206b) in the case where the coverage enhancement mode of the terminal device is CE mode A The embodiments of the present application are not limited.
  • the first field allocates resources for a terminal device that supports a maximum PDSCH or a PUSCH bandwidth of 1.4 MHz, where the first field mapped bit includes a first bit for indicating a narrowband corresponding index allocated for the terminal device, and is used for Indicates the second bit of the PRB allocated in the assigned narrowband.
  • the first bit includes Bits
  • the second bit consists of 5 bits.
  • the first bit includes Bits
  • the second bit consists of 3 bits.
  • CE mode A PDSCH resource allocation the first bit includes Bits, the second bit consists of 5 bits.
  • the first bit includes Bits, the second bit consists of 1 bit.
  • the bits of the first field mapping allocate resources to terminal devices supporting a maximum PDSCH or PUSCH bandwidth of 5 MHz.
  • the allocated resources include at most 4 narrow bands.
  • the first field allocates resources in the same manner as the bits in the DCI format 6-0A, 6-0B, 6-1A, or 6-1B. among them, Indicates the number of uplink PRBs included in the uplink system bandwidth.
  • the number of bits mapped by the second field is not limited. In one possible design, the number of bits mapped by the second field is one.
  • the network device sets a second field in the first DCI only when the system bandwidth is greater than 1.4 MHz.
  • how the second field indicates the offset state between the second frequency resource and the first frequency resource is not limited. Specifically, the present application gives the following two possible situations:
  • the second field is used to indicate that the offset status between the second frequency resource and the first frequency resource includes:
  • the second field indicates that the second frequency resource is not offset from the first frequency resource.
  • the bit of the second field mapping is a second value
  • the second field indicates that the second frequency resource is offset from the first frequency resource. For example, if the number of bits of the second field mapping is 1, the value of 1 bit of the second field mapping may be 0, indicating that the second frequency resource is not offset from the first frequency resource, and the first field maps 1 bit.
  • a value of 1 indicates that the second frequency resource is offset from the first frequency resource; of course, the value of 1 bit of the second field mapping may also indicate that the second frequency resource is not offset from the first frequency resource, and the second field is The value of the mapped 1 bit is 0, indicating that the second frequency resource is offset from the first frequency resource.
  • the value of the bit mapped by the second field indicates the offset between the second frequency resource and the first frequency resource.
  • the shift status is not limited.
  • the fact that the second frequency resource is not offset from the first frequency resource means that the second frequency resource and the first frequency resource are the same frequency resource.
  • the offset of the second frequency resource from the first frequency resource means that the second frequency resource and the first frequency resource are different frequency resources.
  • the second frequency resource relative to the first frequency resource offset indicates that the number of resource blocks included in the second frequency resource is the same as the number of resource blocks included in the first frequency resource, but the location of the second frequency resource in the system bandwidth and the first frequency Resources are not in the same location in the system bandwidth.
  • the bit of the second field mapping is a first value, and/or the resources in the second frequency resource are not all in a narrow band.
  • the value of the bit mapped by the second field is the second value. That is, in the case that the second frequency resource is a resource within a narrow band, the second field indicates that the second frequency resource is not offset from the first frequency resource, and the second frequency resource is not all resources within a narrow band. In case, the second field indicates that the second frequency resource is offset from the first frequency resource.
  • the terminal device determines the second frequency resource according to the first field and the second field, and includes: when the value of the second field mapping is a first value, determining the first frequency resource as the second frequency resource. When the bit of the second field mapping is the second value, the first frequency resource is offset from the first offset by the first offset to obtain the second frequency resource.
  • the first offset direction may be preset or configured by high layer signaling.
  • the first offset may be a value set in advance, or may be a value configured by higher layer signaling, which is not limited in the present application.
  • the terminal device may set the first frequency according to the preset first offset direction and the first offset.
  • the resource offset obtains the second frequency resource, and the first frequency resource is offset according to the first offset direction and the first offset configured by the network device by the high layer signaling to obtain the second frequency resource.
  • the first offset direction is not limited. Specifically, the present application gives the following two possible situations:
  • the first offset direction has a corresponding relationship with at least one of a system bandwidth, a narrow band in which the first frequency resource is located, or a type of the second frequency resource.
  • the type of the second frequency resource includes a PUSCH frequency resource and a PDSCH frequency resource.
  • the first offset direction is the direction in which the PRB number decreases.
  • the first offset direction is a direction in which the PRB number is increased.
  • the first offset direction is a direction in which the PRB number decreases, and the first frequency resource is located at a system bandwidth center frequency point PRB.
  • the first offset direction is the direction in which the PRB number is increased.
  • the first offset direction is a direction in which the PRB number is increased, and the first frequency resource is located at a system bandwidth center frequency point PRB number.
  • the first offset direction is the direction in which the PRB number decreases.
  • the first offset has a corresponding relationship with at least one of a system bandwidth, a narrowband where the first frequency resource is located, and a type of the second frequency resource.
  • the type of the second frequency resource includes a PUSCH frequency resource and a PDSCH frequency resource.
  • the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication manner in the first case, and the first offset direction is the direction in which the PRB number decreases.
  • An offset corresponds to the system bandwidth.
  • the correspondence between the first offset and the system bandwidth is not limited.
  • the correspondence between the first offset and the system bandwidth in the first example is, optionally, when the system bandwidth is one or more of 3 MHz, 5 MHz, 10 MHz, and 15 MHz, the corresponding first offset
  • the measured value is 1 PRB.
  • the corresponding first offset value is 2 PRBs.
  • the terminal device determines the second frequency resource according to the first field and the second field, including: when the value of the second field mapping is the first value
  • the first frequency resource is determined as the second frequency resource, and when the bit mapped by the second field is the second value, the first frequency resource is offset from the PRB number by 2 PRBs to obtain the second frequency resource.
  • the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication manner in the first case, and the first offset direction is the direction in which the PRB number increases.
  • An offset corresponds to the system bandwidth. It is assumed that the corresponding relationship between the first offset and the system bandwidth in the second instance is, optionally, when the system bandwidth is one or more of 3 MHz, 5 MHz, and 15 MHz, the corresponding first offset value is 1 PRB. Optionally, when the system bandwidth is one or more of 10 MHz and 20 MHz, the corresponding first offset value is 2 PRBs.
  • the terminal device determines the second frequency resource according to the first field and the second field, including: when the value of the second field mapping is the first value
  • the first frequency resource is determined as the second frequency resource, and when the bit mapped by the second field is the second value, the first frequency resource is offset from the PRB number by one PRB to obtain the second frequency resource.
  • the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication manner in the first case, and the first offset direction is the direction in which the PRB number decreases.
  • An offset corresponds to the system bandwidth and the narrow band in which the first frequency resource is located.
  • the correspondence between the first offset and the system bandwidth and the narrowband where the first frequency resource is located is not limited.
  • the first offset in Example 3 corresponds to the system bandwidth and the narrowband in which the first frequency resource is located, optionally, when the system bandwidth is 3 MHz, and the first of the narrowbands with a narrowband index of 0.
  • the frequency resource, the corresponding first offset value is 1 PRB; when the system bandwidth is 3 MHz, and for the first frequency resource in the narrowband with the narrowband index of 1, the corresponding first offset value is 0 or 2 PRBs.
  • the corresponding first offset value is 0 or 2 PRB;
  • the bandwidth is 5 MHz, and for the first frequency resource in at least one of the narrowbands of the narrowband index of 2, 3, the corresponding first offset takes a value of 1 PRB.
  • the system bandwidth is 10 MHz, and for the first frequency resource in the narrowband of the narrowband index of 0, 1, 2, 3, 4, 5, 6, 7 of the narrowband, the corresponding first offset
  • the measured value is 1 PRB.
  • the corresponding first offset value when the system bandwidth is 15 MHz, and for the first frequency resource in the narrowband of the narrowband index of 0, 1, 2, 3, 4, 5, the corresponding first offset value is 1 PRB; when the system bandwidth is 15 MHz, and for the first frequency resource in at least one of the narrowbands of the narrowband index of 6, 7, 8, 9, 10, 11, the corresponding first offset value is 2 PRBs.
  • the system bandwidth is 20 MHz, and at least one of narrowbands with narrowband indices of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
  • the first frequency resource in the narrowband has a corresponding first offset value of 2 PRBs.
  • the terminal device determines the second frequency resource according to the first field and the second field, including: when the value of the second field mapping is the first value Determining the first frequency resource as the second frequency resource, and when the value of the second field mapping is the second value, if the narrowband index of the first frequency resource is 0, the first frequency resource is reduced to the PRB number.
  • the direction is offset by one PRB to obtain the second frequency resource. If the narrowband index of the first frequency resource is 1, the first frequency resource is offset from the PRB number by 0 or 2 PRBs to obtain the second frequency resource. .
  • the terminal device offsets the first frequency resource by 0 PRBs in the direction in which the PRB number is decreased to obtain the second frequency resource, that is, the terminal device determines the first frequency resource as the second. Frequency resource.
  • the first frequency resource is offset.
  • the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication manner in the first case, and the first offset direction is the direction in which the PRB number increases.
  • An offset corresponds to the system bandwidth and the narrow band in which the first frequency resource is located.
  • the correspondence between the first offset and the system bandwidth and the narrowband where the first frequency resource is located is not limited.
  • the first offset in Example 4 corresponds to the system bandwidth and the narrowband in which the first frequency resource is located, optionally, when the system bandwidth is 3 MHz, and the first of the narrowbands with a narrowband index of 0.
  • the frequency resource, the corresponding first offset value is 1 PRB; when the system bandwidth is 3 MHz, and for the first frequency resource in the narrowband with the narrowband index of 1, the corresponding first offset value is 0 or 1 PRB.
  • the corresponding first offset value is 0 or 2 PRB;
  • the bandwidth is 5 MHz, and for the first frequency resource in at least one of the narrowbands of the narrowband index of 2, 3, the corresponding first offset takes a value of 1 PRB.
  • the corresponding first offset is taken.
  • the value is 2 PRBs; when the system bandwidth is 10 MHz, and for the first frequency resource in the narrowband with a narrowband index of 7, the corresponding first offset takes a value of 1 or 2 PRBs.
  • the corresponding first offset value when the system bandwidth is 15 MHz, and for the first frequency resource in the narrowband of the narrowband index of 0, 1, 2, 3, 4, 5, the corresponding first offset value is 1 PRB; when the system bandwidth is 15 MHz, and for the first frequency resource in at least one of the narrowbands of the narrowband index of 6, 7, 8, 9, 10, the corresponding first offset value is 2 PRB; When the system bandwidth is 15 MHz, and for the first frequency resource in the narrowband with a narrowband index of 11, the corresponding first offset takes a value of 1 or 2 PRBs.
  • the corresponding first offset value is 2 PRBs.
  • the terminal device determines the second frequency resource according to the first field and the second field, including: when the value of the second field mapping is the first value
  • the first frequency resource is determined to be the second frequency resource, and when the bit mapped by the second field is the second value, if the narrowband index of the first frequency resource is 12, the first frequency resource is increased to the PRB number.
  • the direction is offset by 2 PRBs to obtain a second frequency resource.
  • the terminal device offsets the first frequency resource by 0 PRBs in the direction in which the PRB number is increased to obtain the second frequency resource, that is, the terminal device determines the first frequency resource as the second. Frequency resource.
  • the first frequency resource is offset.
  • the first offset of the foregoing example one to the fourth embodiment may also have a corresponding relationship with the type of the second frequency resource.
  • the first offset of the foregoing example one to the fourth embodiment is further related to the PDSCH frequency resource, that is, when the type of the second frequency resource is a PDSCH frequency resource, the network device may adopt the methods of the first to fourth embodiments.
  • the terminal device allocates a frequency resource that receives downlink data.
  • the first frequency resource may be aligned with the boundary of the RBG in the system bandwidth.
  • the network device allocates the PDSCH frequency resource to the terminal device in one subframe, the resource fragmentation caused by the division of the remaining resources can be avoided. In turn, the remaining resources can be maximized and used by the traditional terminal device, thereby ensuring the maximum throughput of the traditional terminal device.
  • the first field and the second field are used to instruct the terminal device to determine the second frequency resource, and the first field can allocate the resource to the existing DCI format 6-0A, 6-0B, 6-1A, Or the way in which bits in 6-1B allocate resources.
  • the frequency resource indicated by the first field is a resource in a narrow band, and may also be applied to a resource in a plurality of narrow bands.
  • the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication mode in the first case, and it is assumed that the PRB number is reduced when the first frequency resource is located at the system bandwidth center frequency.
  • the first offset direction is the direction in which the PRB number decreases, and in the case where the first frequency resource is located on the side where the system bandwidth center frequency PRB number increases, the first offset direction is The direction in which the PRB number is increased, and it is assumed that the first offset has a correspondence with the system bandwidth and the narrow band in which the first frequency resource is located.
  • the correspondence between the first offset and the system bandwidth and the narrowband where the first frequency resource is located is not limited.
  • the first offset in Example 5 corresponds to the system bandwidth and the narrowband in which the first frequency resource is located, optionally, when the system bandwidth is 3 MHz, and the first of the narrowbands with a narrowband index of 0.
  • the corresponding first offset is 1 PRB; when the system bandwidth is 3 MHz, and for the first frequency resource in the narrowband with the narrowband index of 1, the corresponding first offset is 1 value. PRB.
  • the corresponding first offset value is 0 or 2 PRB;
  • the bandwidth is 5 MHz, and for the first frequency resource in at least one of the narrowbands of the narrowband index of 2, 3, the corresponding first offset takes a value of 1 PRB.
  • the corresponding first The offset is a value of 1 PRB; when the system bandwidth is 10 MHz, and for the first frequency resource in at least one of the narrowbands of the narrowband index of 4, 5, 6, and 7, the corresponding first offset is taken
  • the value is 1 or 2 PRBs.
  • the corresponding first offset value is 1 PRB;
  • the bandwidth is 10 MHz, and for the first frequency resource in the narrowband of the narrowband index of 4, 5, and 6 narrowband, the corresponding first offset is 2 PRBs; when the system bandwidth is 10 MHz, and The first frequency resource in the narrowband of the narrowband index is 7, and the corresponding first offset is 1 or 2 PRBs.
  • the corresponding first offset value is 1 PRB; when the system bandwidth is 15 MHz, and the first frequency in at least one of the narrowbands of the narrowband index is 6, 7, 8, 9, 10, 11
  • the corresponding offset of the resource is 1 or 2 PRBs.
  • the corresponding first offset value when the system bandwidth is 15 MHz, and for the first frequency resource in the narrowband of the narrowband index of 0, 1, 2, 3, 4, 5, the corresponding first offset value is 1 PRB; when the system bandwidth is 15 MHz, and for the first frequency resource in the narrowband of the narrowband index of 6, 7, 8, 9, 10, the corresponding first offset value is 2 PRB; When the system bandwidth is 15 MHz, and for the first frequency resource in the narrowband with a narrowband index of 11, the corresponding first offset takes a value of 1 or 2 PRBs.
  • the corresponding first offset is 2 PRBs; when the system bandwidth is 20 MHz, and the first frequency resource in at least one of the narrowbands of the narrowband index of 8, 9, 10, 11, 12, 13, 14, 15 corresponds to The first offset is taken as 2 PRBs.
  • the terminal device determines the second frequency resource according to the first field and the second field, including: when the value of the second field mapping is the first value
  • the first frequency resource is determined to be the second frequency resource, and when the bit mapped by the second field is the second value, if the narrowband index of the first frequency resource is 12, the first frequency resource is increased to the PRB number.
  • the direction is offset by 2 PRBs to obtain a second frequency resource.
  • the terminal device offsets the first frequency resource by 0 PRBs in the direction of increasing or decreasing the PRB number to obtain the second frequency resource, that is, the terminal device determines the first frequency resource. Is the second frequency resource.
  • the first frequency resource is offset.
  • the first offset of the foregoing example five may also have a corresponding relationship with the type of the second frequency resource.
  • the first offset of the foregoing example 5 is further related to the PUSCH frequency resource, that is, when the type of the second frequency resource is a PUSCH frequency resource, the network device may use the method of the first one to allocate the terminal device.
  • the frequency resource for sending upstream data may be used to allocate the terminal device.
  • the first frequency resource is a PDSCH frequency resource, and the corresponding first offset value is 2 PRBs. If the first frequency resource is a PUSCH frequency resource, the corresponding first offset value is 1 PRB.
  • the corresponding The first offset is a value of 2 PRBs. If the first frequency resource is a PUSCH frequency resource, the corresponding first offset is 1 PRB.
  • the resource allocation method in the foregoing example 5 for a system bandwidth of 15 MHz, for the first of the narrowbands of the narrowband with the narrowband index of 6, 7, 8, 9, 10, 11
  • the frequency resource if the first frequency resource is a PDSCH frequency resource, the corresponding first offset value is 2 PRBs, and if the first frequency resource is a PUSCH frequency resource, the corresponding first offset value is 1 PRB.
  • the corresponding The first offset is a value of 2 PRBs. If the first frequency resource is a PUSCH frequency resource, the corresponding first offset is 1 PRB.
  • the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication mode in the first case, and it is assumed that the PRB number is reduced when the first frequency resource is located at the system bandwidth center frequency.
  • the first offset direction is the direction in which the PRB number is increased.
  • the first offset direction is PRB. The number is reduced in direction, and it is assumed that the first offset has a correspondence with the system bandwidth and the narrow band in which the first frequency resource is located.
  • the correspondence between the first offset and the system bandwidth and the narrowband where the first frequency resource is located is not limited.
  • the number of PRBs included in the frequency range of the system bandwidth is an odd number will be described as an example.
  • the first offset in Example 6 corresponds to the system bandwidth and the narrowband in which the first frequency resource is located, optionally, when the system bandwidth is 3 MHz, for the first frequency in the narrowband with a narrowband index of 0.
  • the corresponding first offset of the resource is 1 PRB; when the system bandwidth is 3 MHz, for the first frequency resource in the narrowband with the narrowband index of 1, the corresponding first offset is 0 or 2 PRB.
  • the corresponding first offset takes a value of 0 or 2 PRBs; when the system bandwidth It is 5 MHz.
  • the corresponding first offset value is 1 PRB.
  • the corresponding first offset value is 1 PRB; when the system bandwidth is 15 MHz, and for the first frequency resource in at least one of the narrowbands of the narrowband index of 6, 7, 8, 9, 10, 11, the corresponding first offset takes a value of 0 Or 2 PRBs.
  • the terminal device offsets the first frequency resource by 0 PRBs in the direction of increasing or decreasing the PRB number to obtain the second frequency resource, that is, the terminal device determines the first frequency resource. Is the second frequency resource.
  • the network device may determine, for the terminal device, a second frequency resource for sending uplink data or receiving downlink data, and determining an offset state between the second frequency resource and the first frequency resource, and further
  • the second field in the DCI indicates the offset state between the second frequency resource and the first frequency resource, and the terminal device offsets the first frequency resource according to the offset state indicated by the second field, and is used to send the uplink data. Or receiving a second frequency resource of downlink data.
  • the second field is used to indicate that the offset status between the second frequency resource and the first frequency resource includes:
  • the second field indicates that the second frequency domain resource is offset from the direction in which the first frequency domain resource decreases to the PRB number.
  • the bit of the second field mapping is a second value
  • the second field indicates a direction offset of the second frequency domain resource from the first frequency domain resource to the PRB number. For example, if the number of bits of the second field mapping is 1, the value of the 1st bit of the second field mapping is 0, indicating that the second frequency domain resource is offset from the first frequency domain resource by the PRB number.
  • the value of 1 bit of the second field mapping indicates that the second frequency domain resource is offset from the direction in which the first frequency domain resource increases to the PRB number; of course, the 1 bit of the second field mapping may also be 1 And indicating that the second frequency domain resource is offset from the direction in which the first frequency domain resource is reduced to the PRB number, and the value of the first bit of the second field mapping is 0, indicating that the second frequency domain resource is increased relative to the first frequency domain resource to the PRB number.
  • the direction offset of the second frequency resource and the first frequency resource is not limited by the value of the value of the bit mapped by the second field.
  • the terminal device determines the second frequency resource according to the first field and the second field, including: when the value of the second field mapping is a first value, the first frequency resource is reduced to the PRB number. The direction offsets the second offset to obtain the second frequency resource. When the bit of the second field mapping is the second value, the first frequency resource is offset from the direction in which the PRB number is increased by the third offset to obtain the second offset. Frequency resource.
  • the second offset may be a preset value, or may be a value configured by higher layer signaling.
  • the third offset may be a value set in advance, or may be a value configured by higher layer signaling, which is not limited in the present application.
  • the terminal device may bias the first frequency resource according to the preset second offset.
  • the second frequency resource is obtained by shifting, and the first frequency resource may be offset to obtain the second frequency resource according to the second offset configured by the network device by the high layer signaling.
  • the first signaling before the network device sends the first DCI to the terminal device, the first signaling may be sent to the terminal device, and the terminal device receives the first signaling sent by the network device, where the first signaling is high layer signaling.
  • the first signaling includes first information, where the first information is used to indicate that the second field is used to indicate an offset state between the second frequency resource and the first frequency resource.
  • the network device may send a high-level signaling to the terminal device, indicating that the second field is included in the first DCI, and is used to indicate an offset state of the second frequency resource relative to the first frequency resource.
  • the terminal device may be instructed by the higher layer signaling to receive the first DCI, and of course, the high layer signaling may be used to instruct the terminal device to receive the DCI that does not include the second field.
  • the second frequency resource may be offset from the first frequency resource by using the high layer signaling, and the second frequency resource may also be indicated by the higher layer signaling not to be offset from the first frequency resource.
  • the terminal device may be instructed to perform resource offset by using the high layer signaling, and of course, the high layer signaling may be used to indicate that the terminal device does not perform resource offset.
  • the terminal device may not parse the first in the first DCI.
  • the second field, or the terminal device receives the DCI that does not include the second field.
  • the terminal device receives the first DCI.
  • the high layer signaling is not limited in this application, for example, it may be RRC signaling.
  • the second offset and the third offset have a corresponding relationship with at least one of a system bandwidth, a narrowband where the first frequency resource is located, and a type of the second frequency resource.
  • the type of the second frequency resource includes a PUSCH frequency resource and a PDSCH frequency resource.
  • the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication manner in the second case, and assumes the second offset and the third offset and the system bandwidth. There is a correspondence.
  • the correspondence between the second offset and the third offset and the system bandwidth is not limited in the present application.
  • the correspondence between the second offset and the third offset and the system bandwidth in the seventh example is, optionally, when the system bandwidth is one or more of 3 MHz, 5 MHz, 10 MHz, and 15 MHz,
  • the corresponding second offset value is 1 PRB
  • the corresponding third offset value is 1 PRB
  • the corresponding second offset is 2 PRBs
  • the corresponding third offset is 2 PRBs.
  • the terminal device determines the second frequency resource according to the first field and the second field, including: when the value of the second field mapping is the first value And shifting the first frequency resource to the PRB number by 2 PRBs, and shifting the first frequency resource to the PRB number by 2 PRBs when the value of the second field mapping is the second value.
  • the second field is used to indicate the offset state between the second frequency resource and the first frequency resource, which is the indication manner in the second case, and assumes the second offset and the third offset and the system bandwidth.
  • a narrow band in which the first frequency resource is located has a corresponding relationship.
  • the correspondence between the second offset and the third offset and the system bandwidth and the narrowband where the first frequency resource is located is not limited.
  • the correspondence between the second offset and the third offset in Example VIII and the system bandwidth and the narrowband in which the first frequency resource is located is, optionally, when the system bandwidth is 3 MHz, and for the narrowband index is 0.
  • the first frequency resource in the narrowband, the corresponding second offset value is 1 PRB, and the corresponding third offset value is 1 PRB; when the system bandwidth is 3 MHz, in the narrowband with the narrowband index being 1
  • the first frequency resource has a corresponding second offset value of 2 PRBs, and the corresponding third offset value is 1 PRB.
  • the corresponding second offset is 2 PRBs
  • the corresponding third offset is 1 PRB.
  • the corresponding second offset is 1 PRB.
  • the corresponding third offset value is 1 PRB.
  • the corresponding second offset is 1 PRB
  • the corresponding third offset is 2 PRBs.
  • the corresponding third offset is 2 PRBs; when the system bandwidth is 10 MHz, for the first frequency resource in the narrowband with a narrowband index of 7, the corresponding second offset is 1 PRB.
  • the corresponding third offset value is 1 PRB.
  • the system bandwidth of 15 MHz there are two corresponding correspondences: when the system bandwidth is 15 MHz, the first frequency resource in at least one of the narrowbands of the narrowband index is 0, 1, 2, 3, 4, 5
  • the corresponding second offset is 1 PRB, and the corresponding third offset is 1 PRB; when the system bandwidth is 15 MHz, the narrowband index is 6, 7, 8, 9, 10, 11
  • the first frequency resource in the at least one narrowband of the narrowband, the corresponding second offset value is 1 PRB, and the corresponding third offset value is 2 PRBs.
  • the system bandwidth is 15 MHz, for the first frequency resource in the narrowband of the narrowband index of 0, 1, 2, 3, 4, 5, the corresponding second offset is 1 PRB.
  • the corresponding third offset value is 1 PRB; for the first frequency resource in the narrowband of the narrowband index of 6, 7, 8, 9, 10, the corresponding second offset is taken The value of the second offset is 2 PRBs. For the first frequency resource in the narrowband with the narrowband index of 11, the corresponding second offset is 2 PRBs, corresponding to The third offset is taken as 1 PRB.
  • the corresponding second offset when the system bandwidth is 20 MHz, for the first frequency resource in the narrowband of the narrowband index of 8, 9, 10, 11, 12, 13, 14, 15 of the narrowband, the corresponding second offset The value is 2 PRBs, and the corresponding third offset is 2 PRBs.
  • the second field indicates that the second frequency domain resource is relative to the first frequency domain resource to the PRB.
  • the direction offset of the number reduction, or a method indicating that the second frequency domain resource is offset from the direction in which the first frequency domain resource increases to the PRB number may be directed to resources in a portion of the narrowband in the system bandwidth. For example, when the system bandwidth is 3 MHz, it can be applied only to the first frequency resource in the narrow band with index 0; when the system bandwidth is 5 MHz, it can be applied only to the narrow band with index 2, 3 or 1, 2, 3. The first frequency resource in .
  • the terminal device determines the second frequency resource according to the first field and the second field, including: if the narrowband index of the first frequency resource is 1, the first When the value of the second field mapping is the first value, the first frequency resource is offset from the PRB number by 2 PRBs, and when the second field mapped bit is the second value, the first frequency is used.
  • the resource is offset by 2 PRBs in the direction in which the PRB number increases.
  • the terminal device offsets the first frequency resource by 0 PRBs to obtain the second frequency resource, that is, the terminal device determines the first frequency resource as the second frequency. Resources.
  • the first frequency resource is offset.
  • the same resource allocation method may be adopted for different system bandwidths.
  • different methods in the foregoing examples 1 to 8 may be used respectively.
  • the instance 5 or For example 6 for system bandwidth of 10 MHz and 20 MHz, example seven or example eight may be used.
  • the solution provided by the embodiment of the present application is mainly introduced from the perspective of interaction between the nodes.
  • the network device and the terminal device include corresponding hardware structures and/or software modules for performing the respective functions in order to implement the above functions.
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the algorithmic steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • the embodiments of the present application may divide the function modules of the network device and the terminal device according to the foregoing method.
  • each function module may be divided according to each function, or two or more functions may be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 11 shows a possible exemplary block diagram of a network device involved in an embodiment of the present invention.
  • the network device 1100 includes a processing unit 1102 and a communication unit 1103.
  • the processing unit 1102 is configured to control and manage the action of the network device 1100.
  • the communication unit 1103 is for supporting communication of the network device 1100 with other network entities (e.g., terminals).
  • the network device 1100 may further include a storage unit 1101 for storing program codes and data of the network device 1100.
  • the processing unit 1102 can be a processor or a controller, for example, a general-purpose central processing unit (CPU), a general-purpose processor, a digital signal processing (DSP), and an application specific integrated circuit. Circuits, ASICs, field programmable gate arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processing unit 1102 can also be a combination of computing functions, such as one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 1103 may be a communication interface, a transceiver or a transceiver circuit, etc., wherein the communication interface is a collective name.
  • the communication interface may include multiple interfaces, for example, may include: an interface between the network device and the terminal device. , an interface between network devices and other network elements, and/or other interfaces.
  • the storage unit 1101 may be a memory.
  • the network device 1100 may be the network device 1200 shown in FIG.
  • the network device 1200 includes at least one processor 1201.
  • the processor 1201 is configured to perform control management on the action of the network device 1200.
  • the processor 1201 is configured to support the network device 1200 in the embodiment to determine the first frequency resource, the second frequency resource, and the first A related step of DCI, etc.
  • the network device 1200 may further include a memory 1202 and a communication interface 1203.
  • the processor 1201, the communication interface 1203, and the memory 1202 may be connected to each other or to each other through a bus 1204.
  • the memory 1202 is configured to store code and data of the network device 1200.
  • Communication interface 1203 is used to support communication by network device 1200.
  • the processor 1201 is a control center of the network device 1200, and may be a processor or a collective name of a plurality of processing elements.
  • the processor 1201 is a central processing unit (CPU), may be an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • DSPs digital signal processors
  • FPGAs Field Programmable Gate Arrays
  • the processor 1201 can perform various functions of the network device 1200 by running or executing a software program stored in the memory 1202 and calling data stored in the memory 1202.
  • the memory 1202 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • the dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • the memory 1202 can exist independently and is coupled to the processor 1201 via a communication bus 1204.
  • the memory 1202 can also be integrated with the processor 1201.
  • Communication interface 1203 using any type of transceiver, for communication with other nodes in the systems of Figures 5 and 6, such as other terminals. It can also be used to communicate with a communication network, such as Ethernet, radio access network (RAN), Wireless Local Area Networks (WLAN), and the like.
  • the communication interface 1203 may include a receiving unit that implements a receiving function, and a transmitting unit that implements a transmitting function.
  • the communication bus 1204 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus.
  • ISA Industry Standard Architecture
  • PCI Peripheral Component
  • EISA Extended Industry Standard Architecture
  • the bus 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 shown in Figure 12, but it does not mean that there is only one bus or one type of bus.
  • the device structure shown in FIG. 12 does not constitute a limitation to the network device, and may include more or less components than those illustrated, or some components may be combined, or different component arrangements.
  • FIG. 13 shows a possible exemplary block diagram of a terminal device involved in the embodiment of the present invention.
  • the terminal device 1300 includes a processing unit 1302 and a communication unit 1303.
  • the processing unit 1302 is configured to perform control management on the action of the terminal device 1300.
  • the communication unit 1303 is configured to support communication of the terminal device 1300 with other network entities (e.g., terminals).
  • the terminal device 1300 may further include a storage unit 1301 for storing program codes and data of the terminal device 1300.
  • the processing unit 1302 may be a processor or a controller, for example, may be a central processing unit (CPU), a general-purpose processor, a digital signal processing (DSP), an application specific integrated (application specific integrated) Circuits, ASICs, field programmable gate arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processing unit 1302 can also be a combination of computing functions, such as one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 1303 may be a communication interface, a transceiver or a transceiver circuit, etc., wherein the communication interface is a collective name.
  • the communication interface may include multiple interfaces, for example, may include: an interface between the terminal device and the terminal device. , an interface between the terminal device and other network elements, and/or other interfaces.
  • the storage unit 1301 may be a memory.
  • the terminal device 1300 When the processing unit 1302 is a processor, the communication unit 1303 is a communication interface, and the storage unit 1301 is a memory, the terminal device 1300 according to the embodiment of the present invention may be the terminal device 1400 shown in FIG.
  • the terminal device 1400 includes: at least one processor 1401.
  • the processor 1401 is configured to perform control management on the action of the terminal device 1400.
  • the processor 1401 is configured to support the first field and the first field indicated by the terminal device 1400 according to the first DCI in the embodiment.
  • the two fields determine the relevant steps of the second frequency resource, and the like.
  • the terminal device 1400 may further include a memory 1402 and a communication interface 1403.
  • the processor 1401, the communication interface 1403, and the memory 1402 may be connected to each other or to each other through a bus 1404.
  • the memory 1402 is configured to store code and data of the terminal device.
  • the communication interface 1403 is configured to support the terminal device 1400 for communication.
  • the processor 1401 is a control center of the terminal device 1400, and may be a processor or a collective name of a plurality of processing elements.
  • the processor 1401 is a central processing unit (CPU), may be an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • DSPs digital signal processors
  • FPGAs Field Programmable Gate Arrays
  • the memory 1402 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • the dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • the memory 1402 can exist independently and is coupled to the processor 1401 via a communication bus 1404.
  • the memory 1402 can also be integrated with the processor 1401.
  • Communication interface 1403 using any type of transceiver, for communication with other nodes in the systems of Figures 5 and 6, such as other network devices. It can also be used to communicate with a communication network, such as Ethernet, radio access network (RAN), Wireless Local Area Networks (WLAN), and the like.
  • the communication interface 1203 may include a receiving unit that implements a receiving function, and a transmitting unit that implements a transmitting function.
  • the communication bus 1404 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus.
  • ISA Industry Standard Architecture
  • PCI Peripheral Component
  • EISA Extended Industry Standard Architecture
  • the bus 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 shown in Figure 14, but it does not mean that there is only one bus or one type of bus.
  • the device structure shown in FIG. 14 does not constitute a limitation of the terminal device, and may include more or less components than those illustrated, or a combination of certain components, or different component arrangements.
  • the embodiment of the present application further provides a computer storage medium, where the computer storage medium stores computer executable instructions, when the computer executable instructions are called by the computer, A data transmission method provided by any one of the above first aspect or the above first aspect.
  • the computer readable storage medium is not limited, and may be, for example, a RAM (random-access memory), a ROM (read-only memory), or the like.
  • the embodiment of the present application further provides a computer program product, where the computer program product stores instructions, when executed on a computer, causing the computer to execute the first aspect or the foregoing A data transmission method provided in any of the possible designs on the one hand.
  • the embodiment of the present application further provides a communication device (for example, an integrated circuit, a wireless device, a circuit module, etc.) for implementing the above method.
  • a communication device for example, an integrated circuit, a wireless device, a circuit module, etc.
  • the means for implementing the power tracker and/or power generator described herein may be a stand-alone device or may be part of a larger device.
  • the device may be (i) a self-contained IC; (ii) a set having one or more 1Cs, which may include a memory IC for storing data and/or instructions; (iii) an RFIC, such as an RF receiver or RF transmitter (iv) an ASIC, such as a mobile station modem; (v) a module that can be embedded in other devices; (vi) a receiver, a cellular phone, a wireless device, a handset, or a mobile unit; (vii) other, etc. Wait.
  • a self-contained IC may include a memory IC for storing data and/or instructions; (iii) an RFIC, such as an RF receiver or RF transmitter (iv) an ASIC, such as a mobile station modem; (v) a module that can be embedded in other devices; (vi) a receiver, a cellular phone, a wireless device, a handset, or a mobile unit; (vii) other, etc. Wait.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a Solid State Disk (SSD)) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium such as a Solid State Disk (SSD)
  • a general purpose processor may be a microprocessor.
  • the general purpose processor may be any conventional processor, controller, microcontroller, or state machine.
  • the processor may also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration. achieve.
  • the steps of the method or algorithm described in the embodiments of the present application may be directly embedded in hardware, a software unit executed by a processor, or a combination of the two.
  • the software unit can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium in the art.
  • the storage medium can be coupled to the processor such that the processor can read information from the storage medium and can write information to the storage medium.
  • the storage medium can also be integrated into the processor.
  • the processor and the storage medium may be disposed in the ASIC, and the ASIC may be disposed in the terminal device. Alternatively, the processor and the storage medium may also be disposed in different components in the terminal device.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow 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 dispositif de transmission de données, utilisés pour résoudre le problème selon lequel une bande étroite résultant d'une division de bande passante dans des systèmes existants est fixe, et par conséquent un dispositif terminal prenant en charge les MTC ne peut transmettre des données qu'en bande étroite, et les ressources fréquentielles utilisées pour la transmission de données ne sont pas suffisamment flexibles. Dans la présente invention, un dispositif de réseau transmet des premières DCI à un dispositif terminal, les premières DCI comprenant un premier champ et un deuxième champ, le premier champ étant utilisé pour indiquer une première ressource fréquentielle, et le deuxième champ étant utilisé pour indiquer un état de décalage entre une deuxième ressource fréquentielle et la première ressource fréquentielle. Le dispositif terminal reçoit les premières DCI et détermine la deuxième ressource de fréquence selon le premier champ et le deuxième champ présents dans les premières DCI. Le dispositif de réseau transmet des données de liaison descendante au dispositif terminal sur la deuxième ressource fréquentielle, et le dispositif terminal reçoit les données de liaison descendante sur la deuxième ressource fréquentielle, ou le dispositif terminal transmet des données de liaison montante au dispositif de réseau sur la deuxième ressource fréquentielle, et le dispositif de réseau reçoit les données de liaison montante sur la deuxième ressource fréquentielle.
PCT/CN2018/076886 2018-02-14 2018-02-14 Procédé et dispositif de transmission de données WO2019157744A1 (fr)

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