WO2020238992A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2020238992A1
WO2020238992A1 PCT/CN2020/092728 CN2020092728W WO2020238992A1 WO 2020238992 A1 WO2020238992 A1 WO 2020238992A1 CN 2020092728 W CN2020092728 W CN 2020092728W WO 2020238992 A1 WO2020238992 A1 WO 2020238992A1
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WIPO (PCT)
Prior art keywords
rbs
subcarriers
message
frequency domain
domain resource
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PCT/CN2020/092728
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English (en)
Chinese (zh)
Inventor
谢信乾
郭志恒
费永强
毕文平
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华为技术有限公司
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Publication of WO2020238992A1 publication Critical patent/WO2020238992A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method and device.
  • the uplink data signal sent by the terminal device to the network device is carried on the physical uplink shared channel (PUSCH), and the PUSCH occupies an integer number of physical resource blocks (physica resource blocks, PRB) in the frequency domain. , And mapped on all sub-carriers included in the PRB.
  • PRB physical resource blocks
  • the subcarriers occupied by the PUSCH are also fewer, which will result in a narrower bandwidth of the PUSCH in the frequency domain, and the frequency domain selectivity of the channel cannot be fully obtained. Diversity gain.
  • the embodiments of the present application provide a communication method and device, which utilize the diversity gain brought by the frequency domain selectivity of the channel to improve the transmission performance of the uplink data signal.
  • the present application provides a communication method that can be applied to a terminal device.
  • the method includes: the terminal device receives a first message from the network device, and the first message is used to instruct the terminal device to send a message to the network on N subcarriers.
  • the device sends an uplink data signal; the terminal device sends an uplink data signal to the network device on the N subcarriers, where the N subcarriers are distributed in M resource blocks RB, and each of the M RBs is used to send uplink data
  • the number of subcarriers of the signal is L, M is greater than or equal to 2, L is less than K, K is the number of subcarriers included in an RB, and N, M, L, and K are all positive integers.
  • the N subcarriers used to transmit uplink data signals may be distributed in M RBs, and the subcarriers used to transmit uplink data signals in each of the M RBs are part of the RB.
  • Carrier that is to say, PUSCH can occupy part of the sub-carriers in an RB to transmit uplink data signals, so as to broaden the frequency domain range of the channel experienced by PUSCH, fully obtain the diversity gain brought by the frequency domain selectivity of the channel, and improve PUSCH transmission performance.
  • the first message may be used to indicate the L subcarriers used for transmitting the uplink data signal in each of the M RBs.
  • the network device may indicate to the terminal device the distribution positions or numbers of the L subcarriers in each RB used to transmit the uplink data signal in the RB through the first message.
  • N RBs distributed among M RBs for transmitting uplink data signals are regarded as at least one discrete resource block DRB
  • PUSCH can be mapped to at least one DRB, and the subcarrier mapping mode of PUSCH That is, the distribution mode of the L subcarriers used for transmitting the uplink data signal in each RB in the RB, which can realize more flexible DRB scheduling.
  • the frequency domain range of the channel experienced by the PUSCH can be changed by setting the values of s and S, thereby improving the transmission performance of the PUSCH.
  • M RBs are located in X RBs included in the first frequency domain resource, where X is a positive integer; the first message is also used to indicate one or more of the following information: M RBs Position in X RBs, value of M, value of L, value of M ⁇ L/K, value of S.
  • the terminal device can determine the N subcarriers in the M RBs for sending the uplink data signal according to the information indicated in the first message.
  • the positions or numbers of the X RBs in the first frequency domain resource can be scheduled by the network device, or can be determined by the terminal device according to a preset rule, so that the flexibility of resource scheduling can be improved.
  • the first frequency domain resource includes consecutive Z RBs, and Z is a positive integer greater than or equal to X; the terminal device may receive a second message from the network device, and the second message is used to indicate X The position or number of each RB in the first frequency domain resource, and the value of X, where X ⁇ L/K is a positive integer; further, the terminal device may determine X RBs according to the second message.
  • the first frequency domain resource includes consecutive Z RBs, the Z RBs are numbered from 0 to Z-1, and Z is a positive integer greater than or equal to X.
  • the X RBs may be X RBs numbered from 0 to X-1 in the first frequency domain resource; or, the X RBs may also be X numbered from ZX to Z-1 in the first frequency domain resource.
  • the present application provides a communication method that can be applied to a network device.
  • the method includes: the network device sends a first message to the terminal device, and the first message is used to instruct the terminal device to send a message to the network on N subcarriers.
  • the device sends an uplink data signal; the network device receives the uplink data signal sent by the terminal device on N subcarriers, where the N subcarriers are distributed in M resource blocks RB, and each of the M RBs is used for sending
  • the number of subcarriers of the uplink data signal is L, M is greater than or equal to 2, L is less than K, K is the number of subcarriers included in an RB, and N, M, L, and K are all positive integers.
  • the N subcarriers used to transmit uplink data signals may be distributed in M RBs, and the subcarriers used to transmit uplink data signals in each of the M RBs are part of the subcarriers in the RB.
  • Carrier that is to say, PUSCH can occupy part of the sub-carriers in an RB to transmit uplink data signals, which can broaden the frequency domain range of the channel experienced by PUSCH, fully obtain the diversity gain brought by the frequency domain selectivity of the channel, and improve PUSCH transmission performance.
  • the first message is used to indicate the L subcarriers used for transmitting the uplink data signal in each of the M RBs.
  • the network device may indicate to the terminal device the location or number of the distribution of the L subcarriers in each RB used to transmit the uplink data signal in the RB through the first message.
  • N RBs distributed among M RBs for transmitting uplink data signals are regarded as at least one discrete resource block DRB
  • PUSCH can be mapped to at least one DRB, and the subcarrier mapping mode of PUSCH That is, the distribution mode of the L subcarriers used to transmit the uplink data signal in each RB in the RB where it is located can realize more flexible DRB scheduling.
  • the frequency domain range of the channel experienced by the PUSCH can be changed by setting the values of s and S, thereby improving the transmission performance of the PUSCH.
  • M RBs are located in X RBs included in the first frequency domain resource, where X is a positive integer; the first message is also used to indicate one or more of the following information: M RBs Position in X RBs, value of M, value of L, value of M ⁇ L/K, value of S.
  • the terminal device can be enabled to determine the N subcarriers in the M RBs for sending the uplink data signal according to the information indicated in the first message.
  • the positions or numbers of the X RBs in the first frequency domain resource can be scheduled by the network device, or can be determined by the terminal device according to a preset rule, so that the flexibility of resource scheduling can be improved.
  • the first frequency domain resource includes consecutive Z RBs, and Z is a positive integer greater than or equal to X; the terminal device may receive a second message from the network device, and the second message is used to indicate X The position or number of each RB in the first frequency domain resource, and the value of X, where X ⁇ L/K is a positive integer; further, the terminal device may determine X RBs according to the second message.
  • the first frequency domain resource includes consecutive Z RBs, the Z RBs are numbered from 0 to Z-1, and Z is a positive integer greater than or equal to X.
  • the X RBs may be X RBs numbered from 0 to X-1 in the first frequency domain resource; or, the X RBs may also be X numbered from ZX to Z-1 in the first frequency domain resource.
  • the embodiments of the present application provide a communication device that has the function of a terminal device in the first aspect or any one of the possible designs of the first aspect.
  • the communication device may be a terminal device, such as a handheld terminal.
  • Devices, vehicle-mounted terminal devices, etc. may also be devices included in terminal devices, such as chips, or devices that include the terminal devices.
  • the functions of the above-mentioned terminal device may be realized by hardware, or may be realized by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device may also have the function of realizing the second aspect or the network device in any possible design of the second aspect.
  • the communication device may be a network device, such as a base station, or a device included in the network device, such as a chip.
  • the functions of the above-mentioned network equipment may be realized by hardware, or may be realized by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the structure of the communication device includes a processing module and a transceiver module, wherein the processing module is configured to support the communication device to perform the corresponding function in the first aspect or any one of the first aspects. , Or perform the corresponding function in the second aspect or any one of the second aspects mentioned above.
  • the transceiver module is used to support communication between the communication device and other communication devices. For example, when the communication device is a terminal device, it can send uplink data signals to the network device on N subcarriers.
  • the communication device may also include a storage module, which is coupled with the processing module, which stores program instructions and data necessary for the communication device.
  • the processing module may be a processor
  • the communication module may be a transceiver
  • the storage module may be a memory.
  • the memory may be integrated with the processor or may be provided separately from the processor, which is not limited in this application.
  • the structure of the communication device includes a processor, and may also include a memory.
  • the processor is coupled with the memory and can be used to execute computer program instructions stored in the memory, so that the communication device executes the first aspect described above. Or any one of the possible design methods of the first aspect, or implement any one of the foregoing second aspect or the second aspect of the possible design methods.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication interface may be a transceiver or an input/output interface; when the communication device is a chip included in the terminal device, the communication interface may be an input/output interface of the chip.
  • the transceiver may be a transceiver circuit, and the input/output interface may be an input/output circuit.
  • an embodiment of the present application provides a chip system, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or an instruction is executed by the processor , So that the chip system implements any possible design method of the foregoing first aspect, or implements any possible design method of the foregoing second aspect.
  • processors in the chip system there may be one or more processors in the chip system.
  • the processor can be implemented by hardware or software.
  • the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory.
  • the memory may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application.
  • the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be set on different chips.
  • the setting method of the processor is not specifically limited.
  • an embodiment of the present application provides a computer-readable storage medium, which stores computer-readable instructions.
  • the computer reads and executes the computer-readable instructions, the computer is caused to execute the first
  • the method in any possible design of the aspect, or the method in any possible design of the second aspect described above.
  • the embodiments of the present application provide a computer program product.
  • the computer reads and executes the computer program product, the computer executes any of the possible design methods in the first aspect, or executes the first Any of the two possible design methods.
  • an embodiment of the present application provides a communication system, which includes the network device and at least one terminal device described in the foregoing aspects.
  • FIG. 1 is a schematic diagram of a network architecture of a communication system to which an embodiment of this application is applicable;
  • Figure 2 is a schematic diagram of a bandwidth part BWP and resource block RB provided by an embodiment of the application;
  • FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 4 is a schematic diagram of a subcarrier mapping manner provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of the distribution positions of L subcarriers provided by an embodiment of the application.
  • FIG. 6 is a schematic diagram of another sub-carrier mapping method provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram of multiple discrete bandwidth parts DBWP configured by a network device in an embodiment of the application;
  • FIG. 8 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 10 is another schematic structural diagram of a communication device according to an embodiment of the application.
  • FIG. 11 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 12 is a schematic diagram of another structure of another communication device provided by an embodiment of this application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • LTE frequency division duplex FDD
  • TDD LTE Time division duplex
  • UMTS universal mobile telecommunication system
  • WIMAX worldwide interoperability for microwave access
  • 5G fifth generation
  • NR new radio
  • FIG. 1 is a schematic diagram of a network architecture of a communication system to which an embodiment of this application is applicable.
  • the communication system includes a network device 110, a terminal device 120, a terminal device 130, and a terminal device 140.
  • the network device may communicate with at least one terminal device (such as the terminal device 120) through uplink (UL) and downlink (DL).
  • UL uplink
  • DL downlink
  • the network device in Figure 1 may be an access network device, such as a base station.
  • the access network device in different systems corresponding to different devices for example, in the fourth generation mobile communication technology (the 4 th generation, 4G) system
  • the eNB may correspond, a corresponding access network device 5G 5G in the system, For example, gNB.
  • the terminal device 120, the terminal device 130, and the terminal device 140 are shown in FIG. 1, it should be understood that the network device may provide services for multiple terminal devices, and the embodiment of the present application does not limit the number of terminal devices in the communication system.
  • the terminal device in FIG. 1 is described using a mobile phone as an example, and it should be understood that the terminal device in the embodiment of the present application is not limited to this.
  • Terminal equipment also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • the terminal device may communicate with a core network via a radio access network (RAN), and exchange voice and/or data with the RAN.
  • RAN radio access network
  • the terminal device may be a handheld device with a wireless connection function, a vehicle-mounted device, etc.
  • terminal devices are: mobile phones (mobile phones), tablets, laptops, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented Augmented reality (AR) equipment, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid)
  • Network equipment is the equipment used in the network to connect terminal equipment to the wireless network.
  • the network device may be a node in a radio access network, may also be called a base station, or may also be called a radio access network (RAN) node (or device).
  • the network device can be used to convert received air frames and Internet Protocol (IP) packets to each other, and act as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network.
  • IP Internet Protocol
  • the network equipment can also coordinate the attribute management of the air interface.
  • the network equipment may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-A), or It can also include the next generation node B (gNB) in the new radio (NR) system of the fifth generation mobile communication technology (5G), or it can also include the transmission reception point.
  • NodeB or eNB or e-NodeB, evolutional Node B in a long term evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-A), or It can also include the next generation node B (gNB) in the new radio (NR) system of the fifth generation mobile communication technology (5G), or it can also include the transmission reception point.
  • LTE long term evolution
  • LTE-A evolved LTE system
  • gNB next generation node B
  • NR new radio
  • TRP home base station
  • BBU baseband unit
  • WiFi access point access point, AP
  • CU centralized unit
  • DU distributed unit
  • a BWP includes several consecutive resource blocks (RB) in the frequency domain.
  • the RB can be a physical resource block (PRB), as shown in Figure 2.
  • PRB physical resource block
  • K can be 12.
  • one resource block includes 12 subcarriers
  • 5G NR 5G NR system
  • one resource block also includes 12 subcarriers.
  • the number of subcarriers included in a resource block may also be other values, which is not limited in this application.
  • the uplink data channel is used to carry uplink data information.
  • it is a physical uplink shared channel (PUSCH), or an enhanced physical uplink control channel (EPUSCH), or it can be other uplink data channels.
  • PUSCH physical uplink shared channel
  • EPUSCH enhanced physical uplink control channel
  • the uplink data channel is introduced using PUSCH as an example.
  • the terms “system” and “network” in the embodiments of this application can be used interchangeably.
  • “Multiple” refers to two or more. In view of this, “multiple” may also be understood as “at least two” in the embodiments of the present application.
  • “At least one” can be understood as one or more, for example, one, two or more. For example, including at least one means including one, two or more, and it does not limit which ones are included. For example, if at least one of A, B, and C is included, then A, B, C, A and B, A and C, B and C, or A and B and C are included. In the same way, the understanding of "at least one" and other descriptions is similar.
  • FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of this application.
  • the method includes the following steps S301 to S304:
  • Step S301 The network device sends a first message to the terminal device, where the first message is used to instruct the terminal device to send an uplink data signal to the network device on N subcarriers.
  • the uplink data signal is carried on the uplink data channel, for example, the PUSCH, and the N subcarriers are subcarriers occupied by the PUSCH, that is, the subcarriers used to transmit the uplink data signal.
  • these N subcarriers are distributed in M resource blocks (RB), and only occupy part of the subcarriers in each of the M RBs, and M is a positive integer greater than or equal to 2. That is to say, the number of subcarriers used to transmit uplink data signals in each of the M RBs is L, L is less than K, and K is the number of subcarriers included in one RB, for example, K may be 12.
  • each RB in the M RBs includes consecutive K subcarriers, but only L subcarriers among them are used to transmit uplink data signals.
  • the first message may also be used to indicate the L subcarriers used to transmit the uplink data signal in each RB of the M RBs, and give the mapping mode of PUSCH to L subcarriers.
  • a possible mapping method is that the subcarriers included in each RB are numbered in the order from 0 to K-1, where the number of the L subcarriers in the RB used to transmit the uplink data signal in the RB is specifically s ,S+S,...,s+(L-1)*S.
  • the value of S can be 2, 3, 4, 6, 8, 12.
  • one RB includes 12 subcarriers.
  • These 6 subcarriers are represented by solid lines in Figure 4, according to the step size 2. Arranged at intervals, and the remaining 6 subcarriers are represented by dashed lines.
  • the PUSCH may occupy part of the subcarriers in one RB, and the subcarriers occupied by the PUSCH are not arranged continuously in the RB.
  • the non-contiguous K sub-carriers are called a discrete resource block (DRB)
  • DRB discrete resource block
  • a DRB occupied by the PUSCH can be used to transmit uplink data signals among the S RBs.
  • the degree of DRB is also different. different.
  • the sub-carrier composition used to transmit uplink data signals in, the degree of DRB is 6. It should be noted that the DRB and degree here are only for the convenience of reference and do not limit the name.
  • the positions of the L subcarriers used to transmit the uplink data signal in each of the M RBs indicated in the first message are also different.
  • S 4
  • one DRB includes subcarriers from 4 RBs, that is, the degree of DRB is 4.
  • L subcarriers can have 4 possible distribution positions in one RB. Therefore, the L subcarriers indicated in the first message can be the first position, the second position, the third position, and the fourth position. One of the locations.
  • the value of S can be 6.
  • one RB includes 12 sub-carriers.
  • These four sub-carriers are shown in Figure 6. It is represented by a solid line.
  • the interval between the first sub-carrier in the first group and the first sub-carrier in the second group is 6, that is, the step size S ,
  • the interval between the second subcarrier in the first group and the second subcarrier in the second group is also 6.
  • each of the M RBs may use the same subcarrier mapping mode, that is, the position of the subcarrier occupied by the PUSCH in each of the M RBs and The numbers can be the same.
  • Step S302 The terminal device receives the first message from the network device.
  • Step S303 The terminal device sends an uplink data signal to the network device on the N subcarriers.
  • the terminal device may determine the N subcarriers occupied by the PUSCH from the M RBs, and send uplink data signals on the N subcarriers.
  • the M RBs may be located in the X RBs included in the first frequency domain resource, and X is a positive integer greater than or equal to M.
  • the first frequency domain resource may be an uplink transmission resource configured by a network device, for example, a bandwidth portion (bandwidth). part, BWP).
  • the first message can also be used to indicate one or more of the positions of M RBs in the X RBs, the value of M, the value of L, the value of M ⁇ L/K, and the value of S, so that The terminal device determines the M RBs, and determines the N subcarriers included in the M RBs for transmitting uplink data signals according to the subcarrier mapping mode.
  • M ⁇ L/K is equal to N/K, which refers to the number of DRBs in M RBs.
  • the N subcarriers can be regarded as one or more scheduled DRBs, and the M RBs include the scheduled one or more DRBs. Therefore, the first message indicating the positions of the M RBs in the X RBs may be: the first message includes information indicating the degree of DRB, the starting position of the DRB, and the number of DRBs.
  • the degree of DRB may be one of a preset value set, for example, the preset value set may be ⁇ 2, 4, 6 ⁇ .
  • the start position of the DRB is the start position of the scheduled DRB in X RBs. If the first frequency domain resource is a given BWP scheduled by a network device, all available sets of degree n in this BWP are called discrete bandwidth part-n (DBWP-n), then X RBs can be RB occupied in this DBWP-n.
  • the starting position of the DRB may be the number of the DRB with the smallest number among the scheduled DRBs, or the number of the RB with the smallest number included in the DRB with the smallest number, so that the terminal device can determine the starting position of the scheduled DRB.
  • the number of DRBs is the number of scheduled DRBs.
  • the preset value set is ⁇ 2, 4, 6 ⁇
  • the number of DRBs in DBWP-2 is N2
  • the number of DRBs in DBWP-4 is N4
  • the number of DRBs in DBWP-6 is N6.
  • Step S304 The network device receives the uplink data signal sent by the terminal device on the N subcarriers.
  • the first frequency domain resource includes consecutive Z RBs, the Z RBs are numbered from 0 to Z-1, and Z is a positive integer greater than or equal to X.
  • the positions or numbers of the X RBs in the first frequency domain resource may be scheduled by the network device, or may be determined by the terminal device through a preset rule.
  • the terminal device may receive a second message from the network device, where the second message is used to indicate the position or number of the X RBs in the first frequency domain resource, and the value of X.
  • X ⁇ L/K is an integer, indicating the number of DRBs included in X RBs.
  • the terminal device may receive the second message from the network device before receiving the first message. If the first frequency domain resource is a given BWP scheduled by the network device, the set of all available degrees of n in the BWP is called Discrete bandwidth part (discrete bandwidth part-n, DBWP-n), then X RBs may be RBs occupied by the DBWP-n.
  • DBWP-n Discrete bandwidth part
  • the second message may specifically indicate the position of the start RB in the DBWP-n and the number of RBs included in the DBWP-n.
  • the network device can simultaneously configure multiple DBWPs of different degrees for the terminal device. As shown in Figure 6, when the degree of DBWP is different, the position and bandwidth of DBWP are also different.
  • the X RBs can be X RBs numbered from 0 to X-1 in the first frequency domain resource; or, they can also be X RBs numbered from ZX to Z- in the first frequency domain resource.
  • the first message and the second message mentioned in the embodiments of this application may be uplink control information (UCI) carried on a physical uplink control channel (PUCCH), or may also be It is a signaling or message sent by a network device through physical layer control signaling, medium access control (MAC) layer signaling, or radio resource control (radio resource control, RRC), which is not specifically limited.
  • UCI uplink control information
  • PUCCH physical uplink control channel
  • MAC medium access control
  • RRC radio resource control
  • the N subcarriers used to transmit uplink data signals can be distributed in M RBs, and the PUSCH can occupy part of the subcarriers in one RB to transmit uplink data signals, thereby It can broaden the frequency domain range of the channel experienced by the PUSCH, fully obtain the diversity gain brought by the frequency domain selectivity of the channel, and improve the transmission performance of the PUSCH.
  • FIG. 8 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • the method includes the following steps S801 to S804:
  • Step S801 The network device sends a first message to the terminal device, where the first message is used to instruct the terminal device to receive a downlink data signal from the network device on N subcarriers;
  • the downlink data signal is carried on the downlink data channel, and the downlink data signal may be a physical downlink shared channel (PDSCH), or may be other downlink data channels.
  • PDSCH physical downlink shared channel
  • the downstream data channel is PDSCH.
  • the N subcarriers are the subcarriers occupied by the PDSCH, that is, the subcarriers used to transmit the downlink data signal.
  • these N subcarriers are distributed in M resource blocks (RB), and only occupy part of the subcarriers in each of the M RBs, and M is a positive integer greater than or equal to 2. That is to say, the number of subcarriers used to transmit downlink data signals in each of the M RBs is L, L is less than K, and K is the number of subcarriers included in one RB, for example, K may be 12.
  • each RB in the M RBs includes consecutive K subcarriers, but only L subcarriers among them are used to transmit downlink data signals.
  • the first message may also be used to indicate the L subcarriers used for transmitting the downlink data signal in each RB of the M RBs, and give the mapping mode of the PDSCH to the L subcarriers.
  • a possible mapping method is that the subcarriers included in each RB are numbered in the order from 0 to K-1, where the number of the L subcarriers in the RB used to transmit the downlink data signal in the RB is specifically s ,S+S,...,s+(L-1)*S.
  • mapping manner of PDSCH to subcarriers (that is, the position or number of subcarriers occupied by PDSCH in an RB) can be referred to the mapping manner of PUSCH to subcarriers shown in FIGS. 4 to 7
  • the difference is that PUSCH is replaced with PDSCH, so it will not be repeated here.
  • Step S802 The network device sends a downlink data signal to the terminal device.
  • the network device may send the first message first and then the downlink data signal, or may send the first message and the downlink data information at the same time, which is not limited in this application.
  • the above step S802 can be executed after step S801, or can be executed simultaneously with step S801.
  • Step S803 The terminal device receives the first message from the network device.
  • Step S804 The terminal device receives the downlink data signal from the network device on the N subcarriers.
  • the terminal device may determine the N subcarriers occupied by the PDSCH from the M RBs, and receive downlink data signals on the N subcarriers.
  • M RBs may be located in the X RBs included in the first frequency domain resource, and X is a positive integer greater than or equal to M.
  • the first frequency domain resource may be a downlink transmission resource configured by a network device, for example, a bandwidth part. BWP.
  • the first message can also be used to indicate one or more of the positions of M RBs in the X RBs, the value of M, the value of L, the value of M ⁇ L/K, and the value of S, so that The terminal device determines the M RBs, and determines the N subcarriers included in the M RBs for receiving the downlink data signal according to the subcarrier mapping mode.
  • M ⁇ L/K is equal to N/K, which refers to the number of DRBs in M RBs.
  • the N subcarriers can be regarded as one or more scheduled DRBs, and the M RBs include the scheduled one or more DRBs. Therefore, the first message indicating the positions of the M RBs in the X RBs may be: the first message includes information indicating the degree of DRB, the starting position of the DRB, and the number of DRBs. Among them, the information of the degree of DRB, the starting position of the DRB, and the number of DRBs can be referred to the previous method embodiment, which will not be repeated here.
  • the terminal device may also receive a second message from the network device, where the second message is used to indicate the position or number of the X RBs in the first frequency domain resource, and the value of X.
  • X ⁇ L/K is an integer, indicating the number of DRBs included in X RBs.
  • the terminal device may receive the second message from the network device before receiving the first message. If the first frequency domain resource is a given BWP scheduled by the network device, the set of all available degrees of n in the BWP is called Discrete bandwidth part DBWP-n, then X RBs can be RBs occupied by the DBWP-n.
  • the second message may specifically indicate the position of the start RB in the DBWP-n and the number of RBs included in the DBWP-n.
  • the network device can simultaneously configure multiple DBWPs of different degrees.
  • the X RBs may also be determined by a preset rule.
  • the X RBs may be X RBs numbered from 0 to X-1 in the first frequency domain resource, or may also be X RBs numbered in the first frequency domain resource.
  • the first message and the second message mentioned in the embodiment of this application may be downlink control information (DCI) carried on a physical downlink control channel (PDCCH), or may also be It is a signaling or message sent by a network device through physical layer control signaling, medium access control (MAC) layer signaling, or radio resource control (radio resource control, RRC), which is not specifically limited.
  • DCI downlink control information
  • PDCCH physical downlink control channel
  • MAC medium access control
  • RRC radio resource control
  • FIG. 9 is a schematic structural diagram of a communication device provided in an embodiment of the present application.
  • the communication device 900 includes a transceiver module 910 and a processing module 920.
  • the communication device can be used to implement the functions related to terminal equipment in any of the foregoing method embodiments.
  • the communication device may be a terminal device, such as a handheld terminal device or a vehicle-mounted terminal device; the communication device may also be a chip included in the terminal device, or a device including the terminal device, such as various types of vehicles.
  • the processing module 920 is configured to perform the operation of sending an uplink data signal to the network device on N subcarriers through the transceiver module 910, and the transceiver module 910 is configured to Perform an operation of receiving the first message from the network device.
  • the processing module 920 is configured to receive a first message through the transceiver module 910, and determine N subcarriers according to the first message, the transceiver module 910 It is used to perform the operation of receiving the downlink data signal from the network device on the N subcarriers.
  • the processing module 920 involved in the communication device may be implemented by a processor or processor-related circuit components, and the transceiver module 910 may be implemented by a transceiver or transceiver-related circuit components.
  • the operation and/or function of each module in the communication device is to implement the corresponding process of the method shown in FIG. 3 and FIG. 8 respectively. For the sake of brevity, it will not be repeated here.
  • FIG. 10 is a schematic diagram of another structure of a communication device provided in an embodiment of this application.
  • the communication device may specifically be a terminal device. It is easy to understand and easy to illustrate.
  • the terminal device uses a mobile phone as an example.
  • the terminal device includes a processor, and may also include a memory, and of course, it may also include a radio frequency circuit, an antenna, an input and output device, and so on.
  • the processor is mainly used to process the communication protocol and communication data, and to control the terminal device, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • only one memory and processor are shown in FIG. 10. In actual terminal equipment products, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the antenna and radio frequency circuit with the transceiver function can be regarded as the transceiver unit of the terminal device, and the processor with the processing function can be regarded as the processing unit of the terminal device.
  • the terminal device includes a transceiver unit 1010 and a processing unit 1020.
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver, and so on.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiver unit 1010 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 1010 as the sending unit, that is, the transceiver unit 1010 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, receiver, or receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • transceiving unit 1010 is used to perform sending and receiving operations on the terminal device side in the foregoing method embodiment
  • processing unit 1020 is used to perform other operations on the terminal device in the foregoing method embodiment except for the transceiving operation.
  • FIG. 11 is a schematic structural diagram of another communication device provided in an embodiment of the present application.
  • the communication device 1100 includes a transceiver module 1110 and a processing module 1120.
  • the communication device can be used to implement the functions related to network equipment in any of the foregoing method embodiments.
  • the communication device may be a network device or a chip included in the network device.
  • the transceiver module 1110 is used for sending the first message to the terminal device and receiving the uplink data signal sent by the terminal device on the N subcarriers. Operation;
  • the processing module 1120 is configured to perform an operation of determining X RBs and sending a second message to the terminal device through the transceiver module 1110.
  • the transceiver module 1110 is used to perform operations of sending a first message to the terminal device and sending a downlink data signal to the terminal device on N subcarriers
  • the processing module 1120 is configured to perform an operation of determining X RBs and sending a second message to the terminal device through the transceiver module 1110.
  • the processing module 1120 involved in the communication device may be implemented by a processor or processor-related circuit components
  • the transceiver module 1110 may be implemented by a transceiver or transceiver-related circuit components.
  • the operations and/or functions of the various modules in the communication device are used to implement the corresponding procedures of the methods shown in FIG. 3 and FIG. 8 respectively. For brevity, details are not described herein again.
  • FIG. 12 is a schematic diagram of another structure of another communication device provided in an embodiment of this application.
  • the communication device may specifically be a type of network equipment, such as a base station, which is used to implement the functions of the network equipment in any of the foregoing method embodiments.
  • the network equipment includes: one or more radio frequency units, such as a remote radio unit (RRU) 1201 and one or more baseband units (BBU) (also known as digital units, digital units, DU) ) 1202.
  • the RRU 1201 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 12011 and a radio frequency unit 12012.
  • the RRU 1201 part is mainly used for receiving and sending radio frequency signals and converting radio frequency signals and baseband signals.
  • the part of the BBU 1202 is mainly used to perform baseband processing and control the base station.
  • the RRU 1201 and the BBU 1202 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 1202 is the control center of the base station, and may also be called a processing unit, which is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU (processing unit) 1202 may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the BBU 1202 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network (such as an LTE network) with a single access indication, or may respectively support different access standards. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 1202 may further include a memory 12021 and a processor 12022, and the memory 12021 is used to store necessary instructions and data.
  • the processor 12022 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the sending operation in the foregoing method embodiment.
  • the memory 12021 and the processor 12022 may serve one or more boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • An embodiment of the present application also provides a chip system, including: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor, the The chip system implements the method in any of the foregoing method embodiments.
  • processors in the chip system there may be one or more processors in the chip system.
  • the processor can be implemented by hardware or software.
  • the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory.
  • the memory may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application.
  • the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be set on different chips.
  • the setting method of the processor is not specifically limited.
  • the chip system may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a system on chip (SoC). It can also be a central processor unit (CPU), a network processor (NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (microcontroller).
  • the controller unit, MCU may also be a programmable controller (programmable logic device, PLD) or other integrated chips.
  • each step in the foregoing method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the embodiment of the present application also provides a computer-readable storage medium, which stores computer-readable instructions, and when the computer reads and executes the computer-readable instructions, the computer is caused to execute any of the foregoing method embodiments Method in.
  • the embodiments of the present application also provide a computer program product.
  • the computer reads and executes the computer program product, the computer is caused to execute the method in any of the foregoing method embodiments.
  • An embodiment of the present application also provides a communication system, which includes a network device and at least one terminal device.
  • processors mentioned in the embodiments of this application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), or application specific integrated circuits ( application specific integrated circuit (ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM, DR RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component
  • the memory storage module
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente invention concerne un procédé et un appareil de communication. Le procédé comprend : un dispositif terminal recevant un premier message en provenance d'un dispositif de réseau ; et le dispositif terminal transmettant, sur N sous-porteuses indiquées dans le premier message, des signaux de données de liaison montante au dispositif de réseau, les N sous-porteuses étant distribuées dans M blocs de ressources (RB), le nombre de sous-porteuses, utilisées pour transmettre des signaux de données de liaison montante, dans chacun des M RB étant égal à L, M étant supérieur ou égal à deux, L étant inférieur à K, K étant le nombre de sous-porteuses comprises dans un RB, et N, M, L et K étant tous des nombres entiers positifs. Au moyen de l'invention, un PUSCH peut occuper certaines sous-porteuses dans un RB pour transmettre des signaux de données de liaison montante, ce qui permet d'élargir la plage de domaine de fréquence d'un canal rencontrée par le PUSCH, ce qui permet d'acquérir complètement le gain de diversité apporté par la sélectivité de domaine de fréquence du canal, et d'améliorer les performances de transmission du PUSCH.
PCT/CN2020/092728 2019-05-31 2020-05-27 Procédé et appareil de communication WO2020238992A1 (fr)

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