WO2022120753A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

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Publication number
WO2022120753A1
WO2022120753A1 PCT/CN2020/135397 CN2020135397W WO2022120753A1 WO 2022120753 A1 WO2022120753 A1 WO 2022120753A1 CN 2020135397 W CN2020135397 W CN 2020135397W WO 2022120753 A1 WO2022120753 A1 WO 2022120753A1
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WIPO (PCT)
Prior art keywords
subcarrier
uplink carrier
location information
carrier
bwp
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Application number
PCT/CN2020/135397
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English (en)
French (fr)
Inventor
涂径玄
杨伦乐
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2020/135397 priority Critical patent/WO2022120753A1/zh
Publication of WO2022120753A1 publication Critical patent/WO2022120753A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of communication, and, more particularly, to a communication method and a communication apparatus.
  • C-Band has abundant bandwidth and is an important frequency band for building 5G Enhanced Mobile Broadband (eMBB). Therefore, most operators around the world use C-Band as the preferred frequency band for 5G.
  • eMBB Enhanced Mobile Broadband
  • NR New Radio
  • gNB 5G base station
  • the C-Band uplink and downlink coverage is unbalanced, and the uplink coverage will be limited, and the throughput of uplink transmission will decrease.
  • a new spectrum pairing method is defined to decouple the uplink and downlink, that is, in the uplink restricted area, use C-Band to transmit downlink data, and use Sub-3G to transmit uplink data.
  • Sub-3G in this scenario is a supplementary uplink (Supplementary Uplink, SUL) carrier
  • C-Band is a normal uplink (Normal Uplink, NUL) carrier.
  • UE User Equipment
  • UEs all have the problem of local oscillator leakage. Receiving the local oscillator signal leaked to the output port or input port will generate strong noise in the baseband DC (Direct current, DC) sub-carrier, resulting in the degradation of the overall demodulation performance. Therefore, in the scenario of uplink carrier switching, how to solve the problem of demodulation performance degradation caused by local oscillator signal leakage is a hot research topic for those skilled in the art.
  • DC Direct current, DC
  • the present application provides a communication method and communication device, so that in the scenario of uplink carrier switching, the network device obtains the position of the DC subcarrier of the partial bandwidth BWP of the second uplink carrier when solving the local oscillator signal leakage.
  • a first aspect provides a communication method, the method comprising: the DU receives location information of a DC sub-carrier of a BWP of a second uplink carrier of a CU, and determines the DC sub-carrier according to the location information of the DC sub-carrier s position.
  • the DU communicates with the terminal device through the first uplink carrier, and the first uplink carrier may be NUL or SUL.
  • the DU can know the position of the DC subcarrier of the BWP of the second uplink carrier, so that the DU can determine the position of the DC subcarrier when dealing with the interference caused by the leakage of the local oscillator signal.
  • At least one resource element RE corresponding to the DC subcarrier is set to zero RE.
  • the DU before the DU receives the location information of the DC subcarrier of the BWP of the second uplink carrier from the CU, the DU needs to send the second uplink carrier configuration information to the CU and A request message, where the request message is used to request the location information of the DC subcarrier of the BWP of the second uplink carrier.
  • the DU can set at least one resource element RE corresponding to the DC subcarrier to zero RE by using the log-likelihood ratio, that is to say, no data is sent on at least one RE corresponding to the DC subcarrier, Therefore, the interference caused by the local oscillator signal leaking to the output port or the input port in the RE can be solved.
  • the location information of the DC subcarrier is carried in the user equipment context change confirmation message.
  • a communication method comprising: a CU sending indication information, the indication information instructing a terminal device to send location information of a DC subcarrier of a BWP of a second uplink carrier; the CU receiving the first information from the terminal device The location information of the DC sub-carrier of the BWP of the second uplink carrier, and the location information of the DC sub-carrier of the BWP of the second uplink carrier is sent to the distributed unit DU.
  • the CU sends the indication information, it communicates with the terminal device through the first uplink carrier, and similarly, the first uplink carrier may be NUL or SUL.
  • the CU learns the location of the DC subcarrier of the BWP of the second uplink carrier by sending the DU whose indication information may be, so that the DU can determine the location of the DC subcarrier when dealing with interference caused by local oscillator signal leakage.
  • the location information of the DC subcarrier is used to instruct the DU to set the RE corresponding to the location of the DC subcarrier to a zero RE.
  • the CU before the CU sends the indication information, it receives the second uplink carrier configuration information and a request message from the DU, where the request message is used to request the second uplink carrier The location information of the DC subcarriers of the BWP.
  • the DU can set at least one resource element RE corresponding to the DC subcarrier to zero RE by using the log-likelihood ratio, that is to say, no data is sent on at least one RE corresponding to the DC subcarrier, Therefore, the interference caused by the local oscillator signal leaking to the output port or the input port in the RE can be solved.
  • the location information of the DC subcarrier is carried in the user equipment context change confirmation message.
  • the indication information is carried in a reconfiguration message or a secondary node change request message.
  • the indication information is carried in the reconfiguration message sent to the terminal device, and when the UE is in the non-independent networking mode, the indication information is carried in the secondary node change confirmation sent to the eNB in the message.
  • a communication method comprising: a terminal device receiving indication information from the network device, the indication information instructing the terminal device to send location information of a DC sub-carrier of a partial bandwidth BWP of a second uplink carrier , and send the location information of the DC sub-carrier of the BWP of the second uplink carrier.
  • the terminal device communicates with the network device through the first uplink carrier before receiving the indication information, and the switching of the uplink carrier has been completed after the terminal device sends the location information of the DC subcarrier, and then the second uplink carrier is used. communicate with the network device.
  • the terminal device sends the location information of the DC sub-carrier, so that the DU knows the location of the DC sub-carrier of the BWP of the second uplink carrier, so that the DU can determine the DC sub-carrier when dealing with the interference caused by the leakage of the local oscillator signal. s position.
  • the location information of the DC subcarrier is carried in the reconfiguration complete message.
  • the indication information is carried in a reconfiguration message or a secondary node change request message.
  • a communication device in a fourth aspect, includes a transceiver unit and a processing unit, the transceiver unit is configured to receive location information of a DC sub-carrier of a partial bandwidth BWP of a second uplink carrier from a centralized unit CU; the The processing unit is configured to determine the position of the DC sub-carrier according to the position information of the DC sub-carrier.
  • the apparatus communicates with the terminal device through the first uplink carrier.
  • the processing unit is further configured to set at least one resource element RE corresponding to the DC subcarrier to a zero RE.
  • the transceiver unit before the transceiver unit receives the location information of the DC subcarrier of the BWP of the second uplink carrier from the CU, the transceiver unit is further configured to send the second uplink carrier to the CU Carrier configuration information and a request message, where the request message is used to request location information of the DC subcarrier of the BWP of the second uplink carrier.
  • the location information of the DC subcarrier is carried in the user equipment context change confirmation message.
  • a fifth aspect provides a communication device, the device includes a transceiver unit, the transceiver unit is configured to send indication information, the indication information instructs the terminal device to send the location information of the DC sub-carrier of the partial bandwidth BWP of the second uplink carrier
  • This transceiver unit is also used to receive the position information of the DC subcarrier of the BWP of the second uplink carrier from the terminal equipment; the transceiver unit is also used for the distributed unit DU to send the DC subcarrier of the BWP of the second uplink carrier. location information.
  • the apparatus communicates with the terminal device through the first uplink carrier.
  • the location information of the DC subcarrier is used to instruct the DU to set the resource element corresponding to the location of the DC subcarrier to zero RE.
  • the transceiver unit before the transceiver unit sends the indication information, it receives the second uplink carrier configuration information and a request message from the DU, where the request message is used to request the second uplink Location information of the DC sub-carriers of the carrier's BWP.
  • the location information of the DC subcarrier is carried in the user equipment context change confirmation message.
  • the indication information is carried in a reconfiguration message or a secondary node change request message.
  • the location information of the DC subcarrier received by the CU is carried in the reconfiguration complete message or the secondary node change confirmation message.
  • a communication device in a sixth aspect, includes a transceiver unit, the transceiver unit is configured to receive indication information from the network device, the indication information instructs the terminal device to send the DC DC of the partial bandwidth BWP of the second uplink carrier The location information of the sub-carrier; the transceiver unit is further configured to send the location information of the DC sub-carrier of the BWP of the second uplink carrier.
  • the device communicates with the network device through the first uplink carrier, and after the transceiver unit sends the location information of the DC subcarrier, the device has completed the switching of the uplink carrier, and then the The apparatus communicates with the network device through the second uplink carrier.
  • the location information of the DC subcarrier is carried in the reconfiguration complete message.
  • the indication information is carried in a reconfiguration message or a secondary node change request message.
  • a communication apparatus including a processor.
  • the processor is coupled to the memory and can be used to execute instructions in the memory, so as to implement the communication method in the first aspect to the second aspect and any one of the possible implementations of the first aspect to the second aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface to which the processor is coupled, and the communication interface is used for inputting and/or outputting information.
  • the information includes at least one of instructions and data.
  • the communication apparatus is a network device.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related interface on the chip or a chip system circuit, etc.
  • the processor may also be embodied as a processing circuit or a logic circuit.
  • the communication apparatus is a chip or a chip system configured in a network device.
  • a communication device including a processor.
  • the processor is coupled to the memory, and can be used to execute instructions in the memory, so as to implement the third aspect and the communication method in any possible implementation manner of the third aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface to which the processor is coupled, and the communication interface is used for inputting and/or outputting information.
  • the information includes at least one of instructions and data.
  • the communication apparatus is a terminal device.
  • the communication interface may be a transceiver, or an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the communication device is a chip or a system of chips.
  • the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip or a chip system.
  • the processor may also be embodied as a processing circuit or a logic circuit.
  • the communication apparatus is a chip or a chip system configured in a network device.
  • a computer program product comprising: a computer program (also referred to as code, or instructions), which, when the computer program is executed, causes a computer to execute the above and the first aspect to The third aspect and the method in any of the possible implementations of the first aspect to the third aspect.
  • a computer program also referred to as code, or instructions
  • a computer-readable medium stores a computer program (also referred to as code, or instruction), when it runs on a computer, causing the computer to execute the above and the first aspect to The third aspect and the method in any of the possible implementations of the first aspect to the third aspect.
  • a computer program also referred to as code, or instruction
  • a communication system including the aforementioned network device and terminal device.
  • FIG. 1 is a schematic diagram of a wireless communication system in an independent networking scenario applicable to an embodiment of the present application.
  • FIG. 2 is an interaction flowchart of wireless communication in an independent networking scenario applicable to an embodiment of the present application.
  • FIG. 3 is another interactive flowchart of wireless communication in an independent networking scenario applicable to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a wireless communication system in a non-standalone networking scenario applicable to an embodiment of the present application.
  • FIG. 5 is a flowchart of wireless communication interaction in a non-standalone networking scenario applicable to an embodiment of the present application.
  • FIG. 6 is another flowchart of wireless communication interaction in a non-standalone networking scenario applicable to an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a terminal device applicable to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a network device applicable to this embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a terminal device applicable to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a network device suitable for an embodiment of the present application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • air interface resources may be used for wireless communication between communication devices.
  • the communication devices may include network devices and terminal devices, and the network devices may also be referred to as network-side devices.
  • the air interface resources may include at least one of time domain resources, frequency domain resources, code resources and space resources. In this embodiment of the present application, at least one may also be described as one or more, and the multiple may be two, three or more, which is not limited in this application.
  • FIG. 1 is a schematic diagram of a wireless communication system 100 in an independent networking scenario applicable to an embodiment of the present application.
  • the wireless communication system 100 may include a network device, for example, the network device shown in FIG. 1 .
  • the wireless communication system 100 may further include at least one terminal device, such as the terminal device shown in FIG. 1 .
  • a wireless connection can be established between a terminal device and a network device and between a terminal device and a terminal device for wireless communication, and the sending device can indicate data scheduling information through control information, so that the receiving device can correctly receive data according to the control information.
  • the terminal device in the embodiments of the present application may also be referred to as UE, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, and user agent or user device.
  • the terminal device in the embodiment of the present application may be a mobile phone, a tablet computer, an indoor or outdoor customer premises equipment (CPE), a computer with a wireless transceiver function, a virtual reality terminal device, an augmented reality terminal device, an industrial control device wireless terminals in autonomous driving, wireless terminals in telemedicine, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, Cordless telephones, session initiation protocol (SIP) telephones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or Other processing equipment connected to the wireless modem, in-vehicle equipment, wearable equipment, terminal equipment in the 5G network or terminal equipment in
  • the terminal device may also be a terminal device in an internet of things (Internet of things, IoT) system.
  • IoT Internet of things
  • IoT is an important part of the development of information technology in the future. Its main technical feature is to connect items to the network through communication technology, so as to realize the intelligent network of human-machine interconnection and interconnection of things.
  • the terminal device may be a device for implementing the function of the terminal device, or a device capable of supporting the terminal device to realize the function, such as a chip system, and the device may be installed in the terminal.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the terminal device is a UE as an example to describe the technical solutions provided by the embodiments of the present application.
  • the network device in this embodiment of the present application may be any device with a wireless transceiver function.
  • the equipment includes but is not limited to: radio network controller (RNC), node B (node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), Home base station (eg, home evolved nodeB, or home node B, HNB), base band unit (BBU), access point (AP) in wireless fidelity (WIFI) systems, wireless Relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc.
  • RNC radio network controller
  • node B node B
  • BSC base station controller
  • BTS base transceiver station
  • BTS base transceiver station
  • BTS Home base station
  • BBU base band unit
  • AP access point
  • WIFI wireless fidelity
  • TP transmission point
  • TRP transmission and reception point
  • It can also be 5G, such as gNB in NR system, or transmission point (TRP or TP) ), one or a group (including multiple antenna panels) antenna panels of the base station in the 5G system, or, it can also be a network node that constitutes a gNB or a transmission point, such as a baseband unit, or a distributed unit (distributed unit, DU) , and may also be a base station in a future mobile communication system or an access node in a Wi-Fi system.
  • 5G such as gNB in NR system, or transmission point (TRP or TP)
  • TRP or TP transmission point
  • DU distributed unit
  • a gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include an active antenna unit (active antenna unit, AAU for short).
  • the CU implements some functions of the gNB, and the DU implements some functions of the gNB.
  • the CU is responsible for processing non-real-time protocols and services, and implementing functions of radio resource control (RRC) and packet data convergence protocol (PDCP) layers.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • the DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical layer.
  • RLC radio link control
  • MAC media access control
  • AAU implements some physical layer processing functions, radio frequency processing and related functions of active antennas.
  • the higher-layer signaling such as the RRC layer signaling
  • the network device may be a device including one or more of a CU node, a DU node, and an AAU node.
  • the CU may be divided into network devices in an access network (Radio Access Network, RAN), or the CU may be divided into network devices in a core network (Core Network, CN), which is not limited in this application.
  • the CU and DU specified in the current standard are two entities of the base station, and the interface between them is the F1 interface.
  • the network device may be an apparatus for implementing the function of the network device, or may be an apparatus capable of supporting the network device to implement the function, such as a chip system, and the apparatus may be installed in the network device.
  • the network device takes the base station as an example to describe the technical solutions provided by the embodiments of the present application.
  • both uplink and downlink data can be transmitted on the C-Band.
  • C-Band is used to transmit downlink data
  • Sub-3G is used to transmit uplink transmission. This method of uplink and downlink decoupling improves uplink coverage by defining and supplementing uplink SUL carriers, thereby improving the uplink of UE. transfer throughput.
  • the above-mentioned area with limited uplink coverage refers to an area where the distance between the UE and the base station serving the UE is greater than a certain threshold. At this time, the uplink throughput decreases and the transmission efficiency is low. On the contrary, the area with good uplink coverage is Refers to the area where the distance between the UE and the base station serving the UE is less than or equal to a certain threshold.
  • FIG. 2 is an interactive flowchart of wireless communication in an independent networking scenario applicable to an embodiment of the present application. It can be seen from FIG. 2 that the method 200 includes:
  • step S210 the UE initially accesses the NUL cell in the area with good uplink coverage, and at this time, the UE and the base station communicate in uplink through the NUL carrier.
  • step S220 the DU judges that the UE has moved to the far point of the NUL cell, that is, the area with limited uplink coverage. At this time, the NUL carrier needs to be switched to the SUL carrier to improve the uplink throughput rate.
  • step S230 the DU sends the first message to the CU.
  • the first message is a UE context modification request message, that is, an F1 standard interface message (such as UE Context Modification Required).
  • the first message carries SUL carrier configuration information and indication information that instructs the UE to report the location of a direct current (direct current, DC) subcarrier of a bandwidth part (BWP) of the SUL carrier.
  • DC direct current
  • the first message may include SUL carrier configuration information and request information, where the request information is used to request DC subcarrier location information of the BWP of the SUL carrier.
  • one or more BWPs may exist on one carrier.
  • it may contain multiple subcarriers.
  • these subcarriers there will be a DC subcarrier, and the DC subcarrier may be called the DC subcarrier of the BWP of the carrier, or the carrier The DC subcarrier corresponding to the BWP.
  • Step S240 After receiving the first message, the CU sends the SUL carrier configuration information and the indication information indicating the location of the DC subcarrier of the BWP of the SUL carrier to the UE through a reconfiguration message.
  • step S250 after receiving the reconfiguration message, the UE sends a reconfiguration complete message to the CU.
  • the reconfiguration complete message carries the location information of the DC subcarrier of the BWP of the SUL carrier.
  • the location information of the DC subcarrier of the BWP of the SUL carrier may be carried in the UplinkTxDirectCurrentList information element.
  • step S260 the CU sends the location information of the DC subcarrier of the BWP of the SUL carrier to the DU, so that the DU can determine the location of the DC subcarrier corresponding to the BWP.
  • the location information of the DC subcarrier of the BWP of the SUL carrier may be carried in an F1 standard interface message, such as a UE context modification confirmation message (UE Context Modification Confirm).
  • F1 standard interface message such as a UE context modification confirmation message (UE Context Modification Confirm).
  • the location information of the DC sub-carrier of the BWP of the SUL carrier can also be carried by other messages sent by the CU to the DU, such as the newly added F1 interface field after specific processing.
  • the above UE Context Modification Confirm is only an example.
  • the message of the location information of the DC sub-carrier corresponding to the BWP of the SUL carrier is not limited.
  • the BWP of the above-mentioned SUL carrier may be one or multiple, which is not limited herein.
  • step S270 after the DU determines the position of the DC subcarrier corresponding to the BWP of the SUL carrier according to the position information of the DC subcarrier corresponding to the BWP of the SUL carrier, the DU sets the resource element (RE) corresponding to the position of the DC subcarrier to zero RE.
  • RE resource element
  • At least one RE corresponding to the DC subcarrier position is set to zero RE, that is to say, at least one RE corresponding to the DC subcarrier position does not send data. In this way, the interference caused by the local oscillator signal leaking to the output port or the input port at the at least one RE can be solved.
  • the UE After the carrier switching is completed, the UE communicates with the base station in uplink through the SUL carrier.
  • FIG. 3 is an interactive flowchart of wireless communication in an independent networking scenario applicable to another embodiment of the present application. It can be seen from FIG. 3 that the method 300 includes:
  • step S310 the UE initially accesses the SUL cell, and at this time, the UE and the base station communicate in uplink through the SUL carrier.
  • step S320 the DU determines that the UE moves to an area with good uplink coverage, and at this time, the SUL carrier can be switched to the NUL carrier.
  • step S330 the DU sends the first message to the CU.
  • the first message is a UE context modification request message, that is, an F1 standard interface message (such as UE Context Modification Required).
  • the first message carries NUL carrier configuration information and indication information that instructs the UE to report the location of the DC subcarrier of the BWP of the NUL carrier.
  • the first message may include NUL carrier configuration information and request information, where the request information is used to request DC subcarrier location information of the BWP of the NUL carrier.
  • step S340 after receiving the first message, the CU sends the NUL carrier configuration information and the indication information indicating that the UE reports the location of the DC subcarrier of the BWP of the NUL carrier to the UE through a reconfiguration message.
  • step S350 after receiving the reconfiguration message, the UE sends a reconfiguration complete message to the CU.
  • the reconfiguration complete message carries the location information of the DC subcarrier of the BWP of the NUL carrier.
  • the location information of the DC subcarrier of the BWP of the NUL carrier may be carried in the UplinkTxDirectCurrentList information element.
  • step S360 the CU sends the location information of the DC sub-carrier of the BWP of the NUL carrier to the DU, so that the DU can determine the location of the DC sub-carrier of the BWP.
  • the location information of the DC subcarrier of the BWP of the NUL carrier may be carried in an F1 standard interface message, such as a UE Context Modification Confirm message.
  • the location information of the DC sub-carrier of the BWP of the NUL carrier can also be carried by other messages sent by the CU to the DU, for example, through the newly added F1 interface field after specific processing.
  • the above UE Context Modification Confirm message is only an example, this application
  • the message of the DC subcarrier location information of the BWP carrying the NUL carrier is not limited.
  • the number of BWPs corresponding to the above-mentioned NUL carrier may be one or multiple, which is not limited herein.
  • Step S370 after the DU determines the location of the DC subcarrier of the BWP of the NUL carrier according to the location information of the DC subcarrier of the BWP of the NUL carrier, the DU sets the RE corresponding to the location of the DC subcarrier to zero RE.
  • the UE After the carrier switching is completed, the UE communicates with the base station in uplink through the NUL carrier.
  • the wireless communication interaction in Figures 2 and 3 is performed in the scenario of UE carrier switching in the independent networking mode.
  • the NUL carrier initially accessed by the UE in Figure 2 is the first uplink carrier.
  • the SUL carrier is the second uplink carrier
  • the SUL carrier initially accessed by the UE in FIG. 3 is the first uplink carrier
  • the switched NUL carrier is the second uplink carrier, but this application does not limit the first uplink carrier and the second uplink carrier.
  • the network equipment such as the DU, can obtain the DC subcarrier location information of the BWP of the second uplink carrier, which belongs to the scope of protection of the present application.
  • FIG. 4 is a schematic diagram of a wireless communication system 400 in a non-standalone networking scenario applicable to an embodiment of the present application.
  • the wireless communication system 400 may include at least two network devices, for example, the network devices shown in FIG. 4 .
  • the wireless communication system 400 may also include at least one terminal device, such as the terminal device shown in FIG. 4 .
  • a wireless connection can be established between a terminal device and a network device and between a terminal device and a terminal device for wireless communication, and the sending device can indicate data scheduling information through control information, so that the receiving device can correctly receive data according to the control information.
  • the network equipment in the Long Term Evolution (LTE) system may include an evolved Node B (evolved Node B, eNB), a radio network controller (Radio Network Controller, RNC), a Node B (Node B, NB) ), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (for example, Home evolved NodeB, or Home Node B, HNB), Base Band Unit (BBU) , Access Point (AP), Wireless Relay Node, Wireless Backhaul Node, Transmission Point (TP) or Transmission and Reception Point (Transmission and Reception Point) in Wireless Fidelity (WIFI) system , TRP) and so on.
  • eNB evolved Node B
  • RNC Radio Network Controller
  • RNC Radio Network Controller
  • Node B Node B
  • BSC Base Station Controller
  • BTS Base Transceiver Station
  • HNB Base Station
  • BBU Base Band Unit
  • AP Access Point
  • Wireless Relay Node Wireless Backhaul Node
  • TP Transmission Point
  • the network device in the NR system is the network device in FIG. 1 , which is not described here for brevity.
  • FIG. 5 is a flowchart of wireless communication interaction in a non-independent networking scenario provided by an embodiment of the present application. It can be seen from FIG. 5 that the method 500 includes:
  • step S510 the UE accesses from a NUL cell in an area with good uplink coverage, and enters a connected state.
  • the NUL cell accessed by the UE at this time belongs to the gNB.
  • the UE may initially access the NUL cell of the eNB, and the eNB sends the UE an inter-system event measurement, instructing the UE to measure the signal of the gNB, and to The measurement report is fed back to the eNB.
  • the eNB decides to add a gNB as a secondary base station for the UE, and sends the measurement report to the gNB at the same time.
  • the gNB selects a NUL cell for the UE to access according to the signal strength in the measurement report, and enters the connected state.
  • the UE communicates with the gNB through the NUL carrier.
  • step S520 the DU determines that the UE has moved to an area with limited uplink coverage of the NUL cell, and at this time, the NUL carrier needs to be switched to the SUL carrier to improve the uplink throughput rate.
  • step S530 the DU sends the first message to the CU.
  • the first message is UE Context Modification Required.
  • the first message carries SUL carrier configuration information and indication information that instructs the UE to report the location of the DC subcarrier of the BWP of the SUL carrier.
  • the first message may include SUL carrier configuration information and request information, where the request information is used to request location information of the DC subcarrier of the BWP of the SUL carrier.
  • step S540 after receiving the first message, the CU sends the SUL carrier configuration information and the indication information indicating that the UE reports the location of the DC subcarrier of the BWP of the SUL carrier to the eNB through a secondary node modification request message (SgNB Modification Required).
  • SgNB Modification Required a secondary node modification request message
  • step S550 the eNB sends the received SUL carrier configuration information and the indication information indicating the location of the DC sub-carrier of the BWP of the SUL carrier reported by the UE to the UE through a reconfiguration message.
  • step S560 after receiving the reconfiguration message, the UE sends a reconfiguration complete message to the eNB.
  • the reconfiguration complete message carries the location information of the DC subcarrier of the BWP of the SUL carrier.
  • the location information of the DC subcarrier of the BWP of the SUL carrier may be carried in the UplinkTxDirectCurrentList information element.
  • step S570 the eNB sends a secondary node modification confirmation message (SgNB Modification Confirm) to the CU.
  • SgNB Modification Confirm a secondary node modification confirmation message
  • the secondary node change confirmation message carries the location information of the DC subcarrier of the BWP of the SUL carrier.
  • the location information of the DC subcarrier of the BWP of the SUL carrier may be carried in the UplinkTxDirectCurrentList information element.
  • step S580 the CU sends the location information of the DC sub-carrier of the BWP of the SUL carrier to the DU, so that the DU can determine the location of the DC sub-carrier of the BWP.
  • the location information of the DC subcarrier of the BWP of the SUL carrier may be carried in an F1 standard interface message, such as UE Context Modification Confirm.
  • the location information of the DC sub-carrier of the BWP of the SUL carrier can also be carried by other messages sent by the CU to the DU, such as the newly added F1 interface field after specific processing.
  • the above UE Context Modification Confirm is only an example , the present application does not limit the message of the location information of the DC sub-carrier of the BWP carrying the SUL carrier.
  • the BWP corresponding to the above-mentioned SUL carrier may be one or multiple, which is not limited herein.
  • Step S590 after the DU determines the position of the DC subcarrier of the BWP of the SUL carrier according to the position information of the DC subcarrier of the BWP of the SUL carrier, the DU sets the RE corresponding to the position of the DC subcarrier to zero RE.
  • the UE communicates with the gNB in uplink through the SUL carrier.
  • FIG. 6 is a flowchart of wireless communication interaction in a non-independent networking scenario provided by another embodiment of the present application. It can be seen from FIG. 6 that the method 600 includes:
  • step S610 the UE initially accesses the SUL cell, and at this time, the UE communicates with the gNB through the SUL carrier.
  • step S620 when the UE moves to an area with good uplink coverage, it is necessary to switch the SUL carrier to the NUL carrier.
  • step S630 the DU sends the first message to the CU.
  • the first message is UE Context Modification Required, and the first message carries NUL carrier configuration information and indication information indicating the location of the DC subcarrier of the BWP for the UE to report the NUL carrier.
  • the first message may be NUL carrier configuration information and request information, where the request information is used to request location information of the DC subcarrier of the BWP of the NUL carrier.
  • step S640 after receiving the first message, the CU sends the NUL carrier configuration information and the indication information indicating that the UE reports the location of the DC subcarrier of the BWP of the NUL carrier to the eNB through SgNB Modification Required.
  • step S650 the eNB sends the received NUL carrier configuration information and the indication information indicating the location of the DC sub-carrier of the BWP of the NUL carrier reported by the UE to the UE through a reconfiguration message.
  • step S660 after receiving the reconfiguration message, the UE sends a reconfiguration complete message to the eNB.
  • the reconfiguration complete message carries the location information of the DC subcarrier of the BWP of the NUL carrier.
  • the location information of the DC subcarrier of the BWP of the NUL carrier may be carried in the UplinkTxDirectCurrentList information element.
  • step S670 the eNB sends a secondary node modification confirmation message (SgNB Modification Confirm) to the CU.
  • SgNB Modification Confirm a secondary node modification confirmation message
  • the message carries the location information of the DC sub-carrier of the BWP of the NUL carrier.
  • the location information of the DC subcarrier of the BWP of the NUL carrier may be carried in the UplinkTxDirectCurrentList information element.
  • step S680 the CU sends the location information of the DC subcarrier of the BWP of the NUL carrier to the DU, so that the DU can determine the location of the DC subcarrier of the BWP.
  • the location information of the DC subcarrier of the BWP of the NUL carrier may be carried in an F1 standard interface message, such as UE Context Modification Confirm.
  • the location information of the DC sub-carrier of the BWP of the NUL carrier can also be carried by other messages sent by the CU to the DU, such as the newly added F1 interface field after specific processing.
  • the above UE Context Modification Confirm is only an example , this application does not limit the message of the DC subcarrier location information of the BWP bearing the NUL carrier.
  • the number of BWPs corresponding to the above-mentioned NUL carrier may be one or multiple, which is not limited herein.
  • Step S690 after the DU determines the position of the DC subcarrier corresponding to the BWP of the NUL carrier according to the position information of the DC subcarrier of the BWP of the NUL carrier, the DU sets the RE corresponding to the position of the DC subcarrier to zero RE.
  • the UE communicates with the gNB in uplink through the NUL carrier.
  • the wireless communication interaction in Figure 5 and Figure 6 is performed in the scenario of UE carrier switching in the independent networking mode.
  • the NUL carrier initially accessed by the UE in Figure 5 is the first uplink carrier.
  • the subsequent SUL carrier is the second uplink carrier
  • the SUL carrier initially accessed by the UE in FIG. 6 is the first uplink carrier
  • the switched NUL carrier is the first uplink carrier, but this application does not limit the first uplink carrier and the second uplink carrier.
  • the network device such as the DU, can obtain the location information of the DC subcarrier of the BWP of the second uplink carrier, which belongs to the scope of protection of this application.
  • setting RE to zero in the above-mentioned embodiment may be performed by means of a log-likelihood ratio (Log-likelihood Ratio, LLR).
  • LLR log-likelihood Ratio
  • the DU can know the location of the DC subcarrier of the BWP of the second uplink carrier, so that the DU can determine the location of the DC subcarrier when dealing with interference caused by local oscillator signal leakage. Then, the DU can set at least one resource element RE corresponding to the DC subcarrier to zero RE through log-likelihood ratio or other methods, that is to say, no data is sent on at least one RE corresponding to the DC subcarrier, so as to solve the problem.
  • the interference caused by the local oscillator signal leaking to the output port or input port at the RE.
  • each network element for example, a terminal device or a network device, includes corresponding hardware structures and/or software modules for performing each function in order to implement the above-mentioned functions.
  • a network element for example, a terminal device or a network device
  • each network element includes corresponding hardware structures and/or software modules for performing each function in order to implement the above-mentioned functions.
  • the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
  • the transmitting-end device or the receiving-end device may be divided into functional modules according to the foregoing method examples.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. middle.
  • the above-mentioned integrated modules can be implemented in the form of hardware, or can be implemented in the form of software function modules.
  • the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation. The following description will be given by using the division of each function module corresponding to each function as an example.
  • FIG. 7 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device 700 may correspond to the terminal device in the method 200 , 300 , 500 or 600 of the embodiments of the present application, and the terminal device 700 may include a unit for executing the method performed by the terminal device in the method 200 , 300 , 500 or 600 . Moreover, each unit in the terminal device and the above-mentioned other operations and/or functions are to implement the corresponding flow of the method 200, 300, 500 or 600, respectively.
  • the terminal device includes a transceiver unit and a processing unit.
  • the transceiver unit is configured to receive indication information from a network device, the indication information instructing the terminal device to send location information of the DC sub-carrier of the BWP of the second uplink carrier, and to send the DC sub-carrier of the BWP of the second uplink carrier to the network device Location information of the carrier.
  • the location information of the DC subcarrier is carried in the reconfiguration complete message, and the indication information is carried in the reconfiguration message or the secondary node change request message.
  • transceiver unit in the terminal device may correspond to the transceiver in the terminal device shown in FIG. 9
  • processing unit in the terminal device may correspond to the processor in the terminal device shown in FIG. 9 .
  • the transceiver unit in the terminal device may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it may correspond to the transceiver in the terminal device shown in FIG.
  • the unit may be implemented by at least one processor, for example, may correspond to the processor in the terminal device shown in FIG. 9 , and the processing unit in the terminal device may also be implemented by at least one logic circuit.
  • the terminal device may further include a storage unit, which may be used to store instructions or data, and the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.
  • a storage unit which may be used to store instructions or data
  • the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.
  • FIG. 8 is a schematic block diagram of a network device provided by an embodiment of the present application.
  • the network device 800 may correspond to the DU in the method 200 , 300 , 500 or 600 in the embodiments of the present application, and the network device may include a unit for executing the method performed by the network device in the method 200 , 300 , 500 or 600 . Moreover, each unit in the network device and the above-mentioned other operations and/or functions are to implement the corresponding flow of the method 200, 300, 500 or 600, respectively.
  • the network device may include a transceiver unit and a processing unit, where the transceiver unit is configured to receive location information of the DC sub-carrier corresponding to the BWP of the second uplink carrier from the CU, and the processing unit is configured to receive the location information of the DC sub-carrier according to the DC sub-carrier.
  • the location information of the carrier determines the location of the DC subcarrier, and the processing unit is further configured to set at least one RE corresponding to the DC subcarrier to a zero resource element.
  • the transceiver unit before the transceiver unit receives the location information of the DC DC subcarrier of the BWP of the second uplink carrier from the CU, the transceiver unit sends the second uplink carrier configuration information and a request message to the CU, and the request message is used for Request the DC subcarrier location information of the BWP of the second uplink carrier.
  • the location information of the above-mentioned DC subcarriers is carried in the user equipment context change confirmation message.
  • the network device 800 may also correspond to the CU in the method 200 , 300 , 500 or 600 of the embodiments of the present application, and the network device may include a unit for executing the method performed by the CU in the method 200 , 300 , 500 or 600 . Moreover, each unit in the network device and the above-mentioned other operations and/or functions are to implement the corresponding flow of the method 200, 300, 500 or 600, respectively.
  • the network device may include a transceiver unit and a processing unit, the transceiver unit is configured to send indication information, instructing the terminal device to send the location information of the DC sub-carrier of the BWP of the second uplink carrier, and the transceiver unit is further configured to receive the information from the terminal device.
  • the location information of the DC subcarrier of the BWP of the second uplink carrier, and the location information of the DC subcarrier is sent to the DU.
  • the transceiver unit before sending the indication information, receives configuration information of the second uplink carrier and a request message from the DU, where the request message is used to request DC subcarrier location information of the BWP of the second uplink carrier.
  • the location information of the DC subcarrier sent by the CU to the DU may be carried in the user equipment context change confirmation message.
  • the indication information may be carried in the reconfiguration message or the secondary node change request message.
  • the location information of the DC subcarrier received by the CU may be carried in the reconfiguration complete message or the secondary node change confirmation message.
  • transceiver unit in the network device may correspond to the transceiver in the network device shown in FIG. 10
  • processing unit in the network device may correspond to the processor in the network device shown in FIG. 10 . .
  • the network device may further include a storage unit, where the storage unit may be used to store instructions or data, and the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.
  • the transceiver unit in the network device may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it may correspond to the transceiver in the network device shown in FIG.
  • the processing unit may be implemented by at least one processor, for example, may correspond to the processor in the network device shown in FIG. 10 , and the processing unit in the network device may be implemented by at least one logic circuit.
  • FIG. 9 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device can be applied to the system as shown in FIG. 1 or 4, and performs the functions of the terminal device in the foregoing method embodiments.
  • the terminal device includes a processor and a transceiver.
  • the terminal device further includes a memory.
  • the processor, the transceiver and the memory can communicate with each other through an internal connection path to transmit control and/or data signals, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, to control the transceiver to send and receive signals.
  • the terminal device may further include an antenna for sending the uplink data or uplink control signaling output by the transceiver through wireless signals.
  • the above-mentioned processor and the memory can be combined into a processing device, and the processor is configured to execute the program codes stored in the memory to realize the above-mentioned functions.
  • the memory can also be integrated in the processor, or be independent of the processor.
  • the processor may correspond to the processing unit in FIG. 7 .
  • a transceiver may correspond to the transceiver unit in FIG. 7 .
  • a transceiver may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used for receiving signals, and the transmitter is used for transmitting signals.
  • the terminal device shown in FIG. 9 can implement each process involving the terminal device in the methods 200 , 300 , 500 or 600 .
  • the operations and/or functions of each module in the terminal device are respectively to implement the corresponding processes in the foregoing method embodiments.
  • the above-mentioned processor may be used to perform the actions described in the foregoing method embodiments implemented by the terminal device, and the transceiver may be used to perform the actions described in the foregoing method embodiments that the terminal device sends to or receives from the network device.
  • the transceiver may be used to perform the actions described in the foregoing method embodiments that the terminal device sends to or receives from the network device.
  • the above-mentioned terminal device may further include a power supply for providing power to various devices or circuits in the terminal device.
  • FIG. 10 is a schematic structural diagram of a network device (CU or DU) provided by an embodiment of the present application.
  • the network device can be applied to the system shown in FIG. 1 or 4, and performs the functions of the network device in the foregoing method embodiments.
  • the network device includes a processor and a transceiver.
  • the network device further includes a memory.
  • the processor, the transceiver and the memory can communicate with each other through an internal connection path to transmit control and/or data signals, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, to control the transceiver to send and receive signals.
  • the network device may further include an antenna, configured to send the downlink data or downlink control signaling output by the transceiver through wireless signals.
  • the above-mentioned processor and the memory can be combined into a processing device, and the processor is configured to execute the program codes stored in the memory to realize the above-mentioned functions.
  • the memory can also be integrated in the processor, or be independent of the processor.
  • the processor may correspond to the processing unit in FIG. 8 .
  • a transceiver may correspond to the transceiver unit in FIG. 8 .
  • a transceiver may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used for receiving signals, and the transmitter is used for transmitting signals.
  • the network device shown in FIG. 10 can implement each process involving the CU and DU in the method 200 , 300 , 500 or 600 .
  • the operations and/or functions of each module in the network device are respectively to implement the corresponding processes in the foregoing method embodiments.
  • the above-mentioned processor may be used to perform the actions implemented by the network device described in the foregoing method embodiments, and the transceiver may be used to execute the actions described in the foregoing method embodiments that the network device sends to or receives from the terminal device.
  • the transceiver may be used to execute the actions described in the foregoing method embodiments that the network device sends to or receives from the terminal device.
  • the above-mentioned network device may further include a power supply for providing power to various devices or circuits in the network device.
  • the network device shown in FIG. 10 is only a possible architecture of the network device, and should not constitute any limitation to the present application.
  • the methods provided in this application may be applicable to network devices of other architectures.
  • Embodiments of the present application also provide a communication device, including a processor and an interface.
  • the processor is coupled to the interface, and the interface is used for inputting and/or outputting information, and the processor is used for executing the method in any of the above method embodiments.
  • the interface may be a transceiver, or an input/output interface.
  • the interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip or a chip system.
  • the above-mentioned processing device may be one or more chips.
  • the processing device may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), or a It is a central processing unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), or a microcontroller (microcontroller unit). , MCU), it can also be a programmable logic device (PLD) or other integrated chips.
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • SoC system on chip
  • MCU microcontroller unit
  • MCU programmable logic device
  • PLD programmable logic device
  • each step of the above-mentioned method can be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, detailed description is omitted here.
  • the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the aforementioned processors may be general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components .
  • DSPs digital signal processors
  • ASICs application specific integrated circuits
  • FPGAs field programmable gate arrays
  • the methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code is run on a computer, the computer is made to execute Fig. 2, 3, 5 or the method in the embodiment shown in 6.
  • the present application further provides a computer-readable medium, where the computer-readable medium stores program codes, and when the program codes run on a computer, causes the computer to execute Figs. 2 , 3 , and 5 or the method in the embodiment shown in 6.
  • the present application further provides a system, which includes the aforementioned one or more terminal devices and one or more network devices.
  • the network equipment in each of the above apparatus embodiments completely corresponds to the terminal equipment and the network equipment or terminal equipment in the method embodiments, and corresponding steps are performed by corresponding modules or units.
  • a processing unit processor
  • processor For functions of specific units, reference may be made to corresponding method embodiments.
  • the number of processors may be one or more.
  • a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • an application running on a computing device and the computing device may be components.
  • One or more components may reside within a process and/or thread of execution, and a component may be localized on one computer and/or distributed between 2 or more computers.
  • these components can execute from various computer readable media having various data structures stored thereon.
  • a component may, for example, be based on a signal having one or more data packets (eg, data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet interacting with other systems via signals) Communicate through local and/or remote processes.
  • data packets eg, data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet interacting with other systems via signals
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the unit is only a logical function division.
  • there may be other division methods for example, multiple units or components may be combined or Integration into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • Units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solutions of the embodiments of the present application.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • each functional unit may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented in software, it can 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 (programs). When the computer program instructions (programs) are loaded and executed on the computer, all or part of the processes or functions according to the embodiments of the present application are generated.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored on or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted over a wire from a website site, computer, server or data center (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media integrated.
  • the available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

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Abstract

本申请提供了一种通信方法和通信装置，该通信方法包括：在上行载波切换的场景下，分布式单元DU接收集中式单元CU发送的第二上行载波的部分带宽BWP对应的直流DC子载波的位置信息，并根据该DC子载波的位置信息确定DC子载波的位置，以使得DU在处理本振信号泄露所带来的干扰时获知DC子载波的位置。

Description

通信方法和通信装置 技术领域
本申请涉及通信领域，并且，更具体地，涉及通信方法和通信装置。
背景技术
C-Band带宽充裕，是构建5G增强移动宽带(Enhanced Mobile Broadband，eMBB)的重要频段，因此全球大多数运营商将C-Band作为5G的首选频段。但是，由于新无线(New Radio，NR)上下行时隙的分配比例不均匀，并且5G基站(g Node B，gNB)的下行传输功率大，导致C-Band上下行覆盖不平衡，并且上行覆盖会受限制，上行传输的吞吐量下降。
为解决上述问题，定义了新的频谱配对方式，将上下行进行了解耦，即在上行受限区域，使用C-Band传输下行数据，使用Sub-3G传输上行数据。此场景中的Sub-3G为补充上行(Supplementary Uplink，SUL)载波，C-Band为普通上行(Normal Uplink，NUL)载波。用户设备(User Equipment，UE)在上行覆盖良好的区域接入NUL小区，但是当UE移动到上行覆盖受限区域，为了提升UE的上行传输吞吐率，UE需要切换至SUL载波。
目前UE均存在本振泄露的问题，接收泄露到输出口或输入口的本振信号会在基带的直流(Direct current，DC)子载波产生较强的噪声，导致整体解调性能下降，对于高阶高码率来说损失较大，因此，在上行载波切换的场景下，如何解决本振信号泄露带来的解调性能下降的问题是本领域技术人员研究的热点。
发明内容
本申请提供一种通信方法和通信装置，以使得在上行载波切换的场景下，网络设备在解决本振信号泄露时获取到第二上行载波的部分带宽BWP的直流DC子载波的位置。
第一方面，提供了一种通信方法，该方法包括：该DU接收来自CU的第二上行载波的BWP的DC子载波的位置信息，并根据该DC子载波的位置信息，确定该DC子载波的位置。
应理解，DU接收到该DC子载波的位置信息前，该DU是通过第一上行载波与终端设备进行通信的，该第一上行载波可以是NUL或SUL。
基于上述方案，DU可以获知第二上行载波的BWP的DC子载波的位置，从而使得DU处理本振信号泄露带来的干扰时，能够确定DC子载波的位置。
结合第一方面，在第一方面的某些实现方式中，DU确定该DC子载波的位置后将该DC子载波对应的至少一个资源单元RE设置为零RE。
结合第一方面，在第一方面的某些实现方式中，在DU接收来自CU的第二上行载波的BWP的DC子载波的位置信息之前，DU需向CU发送该第二上行载波配置信息以及请 求消息，该请求消息用于请求该第二上行载波的BWP的DC子载波的位置信息。
基于上述方案，DU可以通过对数似然比这种方式将该DC子载波对应的至少一个资源单元RE设置为零RE，也就是说在该DC子载波对应的至少一个RE上不发送数据，从而可以解决泄露到输出口或输入口的本振信号在该RE带来的干扰。
结合第一方面，在第一方面的某些实现方式中，该DC子载波的位置信息承载于用户设备上下文变更确认消息中。
第二方面，提供了一种通信方法，该方法包括：CU发送指示信息，该指示信息指示终端设备发送第二上行载波的BWP的DC子载波的位置信息；该CU接收来自终端设备的该第二上行载波的BWP的DC子载波的位置信息，并向分布式单元DU发送该第二上行载波的BWP的DC子载波的位置信息。
应理解，CU发送指示信息前，是通过第一上行载波与终端设备进行通信的，同样地，该第一上行载波可以是NUL或SUL。
基于上述方案，CU通过发送指示信息可以是的DU获知第二上行载波的BWP的DC子载波的位置，从而使得DU处理本振信号泄露带来的干扰时，能够确定DC子载波的位置。
结合第二方面，在第二方面的某些实现方式中，该DC子载波的位置信息用于指示该DU将该DC子载波的位置对应的RE设置为零RE。
结合第二方面，在第二方面的某些实现方式中，在CU发送该指示信息之前，接收来自DU的该第二上行载波配置信息以及请求消息，该请求消息用于请求该第二上行载波的BWP的DC子载波的位置信息。
基于上述方案，DU可以通过对数似然比这种方式将该DC子载波对应的至少一个资源单元RE设置为零RE，也就是说在该DC子载波对应的至少一个RE上不发送数据，从而可以解决泄露到输出口或输入口的本振信号在该RE带来的干扰。
结合第二方面，在第二方面的某些实现方式中，该DC子载波的位置信息承载于用户设备上下文变更确认消息中。
结合第二方面，在第二方面的某些实现方式中，该指示信息承载于重配置消息或辅节点变更请求消息中。
应理解，当UE处于独立组网模式时，该指示信息承载于向终端设备发送的重配置消息中，当UE处于非独立组网模式时，该指示信息承载于向eNB发送的辅节点变更确认消息中。
第三方面，提供了一种通信方法，该方法包括：终端设备接收来自该网络设备的指示信息，该指示信息指示该终端设备发送第二上行载波的部分带宽BWP的直流DC子载波的位置信息，并发送该第二上行载波的BWP的DC子载波的位置信息。
应理解，该终端设备接收到指示信息前是通过第一上行载波与网络设备进行通信的，并且在该终端设备发送DC子载波的位置信息已经完成了上行载波的切换，此后通过第二上行载波与该网络设备进行通信。
基于上述方案，终端设备发送通过DC子载波的位置信息，使得DU获知第二上行载波的BWP的DC子载波的位置，从而使得DU处理本振信号泄露带来的干扰时，能够确定DC子载波的位置。
结合第三方面，在第三方面的某些实现方式中，该DC子载波的位置信息承载于重配置完成消息中。
结合第三方面，在第三方面的某些实现方式中，该指示信息承载于重配置消息或辅节点变更请求消息中。
第四方面，提供了一种通信装置，该装置包括收发单元和处理单元，该收发单元用于接收来自集中式单元CU的第二上行载波的部分带宽BWP的直流DC子载波的位置信息；该处理单元用于根据该DC子载波的位置信息，确定该DC子载波的位置。
应理解，该收发单元接收DC子载波的位置信息前，该装置通过第一上行载波与终端设备通信。
结合第四方面，在第四方面的某些实现方式中，该处理单元还用于将该DC子载波对应的至少一个资源单元RE设置为零RE。
结合第四方面，在第四方面的某些实现方式中，在收发单元接收来自CU的第二上行载波的BWP的DC子载波的位置信息之前，收发单元还用于向CU发送该第二上行载波配置信息以及请求消息，该请求消息用于请求该第二上行载波的BWP的DC子载波的位置信息。
结合第四方面，在第四方面的某些实现方式中，该DC子载波的位置信息承载于用户设备上下文变更确认消息中。
第五方面，提供了一种通信装置，该装置包括收发单元，该收发单元用于发送指示信息，该指示信息指示该终端设备发送第二上行载波的部分带宽BWP的直流DC子载波的位置信息；该收发单元还用于接收来自终端设备的该第二上行载波的BWP的DC子载波的位置信息；该收发单元还用于分布式单元DU发送该第二上行载波的BWP的DC子载波的位置信息。
应理解，该收发单元用于发送指示信息前，该装置通过第一上行载波与终端设备通信。
结合第五方面，在第五方面的某些实现方式中，其特征在于，该DC子载波的位置信息用于指示该DU将该DC子载波的位置对应的资源单元设置为零RE。
结合第五方面，在第五方面的某些实现方式中，在收发单元发送该指示信息之前，接收来自DU的该第二上行载波配置信息以及请求消息，该请求消息用于请求该第二上行载波的BWP的DC子载波的位置信息。
结合第五方面，在第五方面的某些实现方式中，该DC子载波的位置信息承载于用户设备上下文变更确认消息中。
结合第五方面，在第五方面的某些实现方式中，该指示信息承载于重配置消息或辅节点变更请求消息中。
结合第五方面，在第五方面的某些实现方式中，CU接收的该DC子载波的位置信息承载于重配置完成消息或辅节点变更确认消息中。
第六方面，提供了一种通信装置，该装置包括收发单元，该收发单元用于接收来自该网络设备的指示信息，该指示信息指示该终端设备发送第二上行载波的部分带宽BWP的直流DC子载波的位置信息；该收发单元还用于发送该第二上行载波的BWP的DC子载波的位置信息。
应理解，该收发单元接收该指示信息前，该装置通过第一上行载波与网络设备通信， 在该收发单元发送该DC子载波的位置信息后，该装置已经完成了上行载波的切换，此后该装置通过第二上行载波与该网络设备通信。
结合第六方面，在第六方面的某些实现方式中，所述DC子载波的位置信息承载于重配置完成消息中。
结合第六方面，在第六方面的某些实现方式中，其特征在于，所述指示信息承载于重配置消息或辅节点变更请求消息中。
第七方面，提供一种通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第一方面至第二方面以及第一方面至第二方面中任一种可能实现方式中的通信方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合，所述通信接口用于输入和/或输出信息。所述信息包括指令和数据中的至少一项。
在一种实现方式中，该通信装置为网络设备。当该通信装置为网络设备时，所述通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，当该通信装置为芯片或芯片系统时，所述通信接口可以是该芯片或芯片系统上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等。所述处理器也可以体现为处理电路或逻辑电路。
在另一种实现方式中，该通信装置为配置于网络设备中的芯片或芯片系统。
第八方面，提供一种通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第三方面以及第三方面中任一种可能实现方式中的通信方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合，所述通信接口用于输入和/或输出信息。所述信息包括指令和数据中的至少一项。
在一种实现方式中，该通信装置为终端设备。当该通信装置为终端设备时，所述通信接口可以是收发器，或，输入/输出接口。可选地，所述收发器可以为收发电路。可选地，所述输入/输出接口可以为输入/输出电路。
在另一种实现方式中，该通信装置为芯片或芯片系统。当该通信装置为芯片或芯片系统时，所述通信接口可以是该芯片或芯片系统上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等。所述处理器也可以体现为处理电路或逻辑电路。
在另一种实现方式中，该通信装置为配置于网络设备中的芯片或芯片系统。
第九方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当所述计算机程序被运行时，使得计算机执行上述以及第一方面至第三方面以及以及第一方面至第三方面中任一种可能实现方式中的方法。
第十方面，提供了一种计算机可读介质，所述计算机可读介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述以及第一方面至第三方面以及以及第一方面至第三方面中任一种可能实现方式中的方法。
第十一方面，提供了一种通信系统，包括前述的网络设备和终端设备。
附图说明
图1为一种适用于本申请实施例的独立组网场景下无线通信系统的示意图。
图2为一种适用于本申请实施例的独立组网场景下无线通信的交互流程图。
图3为另一种适用于本申请实施例的独立组网场景下无线通信的交互流程图。
图4为一种适用于本申请实施例的非独立组网场景下无线通信系统的示意图。
图5为一种适用于本申请实施例的非独立组网场景下的无线通信交互流程图。
图6为另一种适用于本申请实施例的非独立组网场景下的无线通信交互流程图。
图7为一种适用于本申请实施例的终端设备的示意性框图。
图8为一种适用于本申请实施例的网络设备的示意性框图。
图9为一种适用于本申请实施例的终端设备的结构示意图。
图10为一种适用于本申请实施例的网络设备的结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通信(global system formobile communications，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、卫星通信系统、第五代(5th generation，5G)系统或新无线(new radio，NR)，以及未来的通信系统。
应理解，在无线通信系统中，通信设备间可以利用空口资源进行无线通信。其中，通信设备可以包括网络设备和终端设备，网络设备还可以称为网络侧设备。空口资源可以包括时域资源、频域资源、码资源和空间资源中至少一个。在本申请实施例中，至少一个还可以描述为一个或多个，多个可以是两个、三个或者更多，本申请不做限制。
图1是适用于本申请实施例的独立组网场景下无线通信系统100的示意图。
如图1所示，该无线通信系统100可以包括一个网络设备，例如，图1所示的网络设备。该无线通信系统100还可以包括至少一个终端设备，例如图1所示的终端设备。终端设备与网络设备之间、终端设备与终端设备之间可以建立无线连接，进行无线通信，发送设备可以通过控制信息指示数据的调度信息，以便接收设备根据控制信息正确地接收数据。
本申请实施例中的终端设备也可以称为UE、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端设备可以是手机、平板电脑、室内或室外用户驻地设备(customer premises equipment，CPE)、带无线收发功能的电脑、虚拟现实终端设备、增强现实终端设备、工业控制中的无线终端、无人驾驶中的无线终端、远程医疗中的无线终端、智能电网中的无线终端、运输安全中的无线终端、智慧城市中的无线终端、智慧家庭中的无线终端、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设 备、车载设备、可穿戴设备，5G网络中的终端设备或者未来演进的公用陆地移动通信网络(Public Land Mobile Network，PLMN)中的终端设备等。
此外，终端设备还可以是物联网(internet of things，IoT)系统中的终端设备。IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。
应理解，本申请实施例中，终端设备可以是用于实现终端设备功能的装置，也可以是能够支持终端设备实现该功能的装置，例如芯片系统，该装置可以被安装在终端中。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。本申请实施例提供的技术方案中，以终端设备是UE为例，描述本申请实施例提供的技术方案。
本申请实施例中的网络设备可以是任意一种具有无线收发功能的设备。该设备包括但不限于：无线网络控制器(radio network controller，RNC)、节点B(node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved nodeB，或home node B，HNB)、基带单元(base band unit，BBU)，无线保真(wireless fidelity，WIFI)系统中的接入点(access point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception point，TRP)等，还可以为5G，如NR系统中的gNB，或传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元，或分布式单元(distributed unit，DU)，还可以为未来移动通信系统中的基站或Wi-Fi系统中的接入节点等。
在一些部署中，gNB可以包括集中式单元(centralized unit，CU)和DU。gNB还可以包括有源天线单元(active antenna unit，简称AAU)。CU实现gNB的部分功能，DU实现gNB的部分功能。比如，CU负责处理非实时协议和服务，实现无线资源控制(radio resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能。DU负责处理物理层协议和实时服务，实现无线链路控制(radio link control，RLC)层、媒体接入控制(media access control，MAC)层和物理层的功能。AAU实现部分物理层处理功能、射频处理及有源天线的相关功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令，也可以认为是由DU发送的，或者，由DU+AAU发送的。可以理解的是，网络设备可以为包括CU节点、DU节点、AAU节点中一项或多项的设备。此外，可以将CU划分为接入网(Radio Access Network，RAN)中的网络设备，也可以将CU划分为核心网(Core Network，CN)中的网络设备，本申请对此不做限定。目前标准中规定的CU和DU是基站的2个实体，之间的接口是F1接口。
应理解，本申请实施例中，网络设备可以是用于实现网络设备功能的装置，也可以是能够支持网络设备实现该功能的装置，例如芯片系统，该装置可以被安装在网络设备中。在本申请实施例提供的技术方案中，网络设备以基站为例，描述本申请实施例提供的技术方案。
如图1所示，在上行覆盖良好区域，上下行数据可以都在C-Band传输。而在上行覆盖受限区域，使用C-Band传输下行数据，使用Sub-3G传输上行传输，这种上下行解耦的方式，通过定义补充上行SUL载波，提升了上行覆盖，从而提升UE的上行传输吞吐率。
应理解，上述提到的上行覆盖受限区域是指UE与为UE服务的基站的距离大于某一阈值的区域，此时上行的吞吐量下降，传输效率低，相反地，上行覆盖良好区域是指UE与为UE服务的基站的距离小于等于某一阈值的区域。
图2是适用于本申请实施例的独立组网场景下无线通信的交互流程图，从图2中可以看出方法200包括：
S210步骤，UE在上行覆盖良好区域从NUL小区初始接入，此时UE与基站之间通过NUL载波上行通信。
S220步骤，DU判断UE移动到NUL小区远点，即上行覆盖受限区域，此时需要将NUL载波切换为SUL载波，以提升上行吞吐率。
S230步骤，DU向CU发送第一消息。
可选地，该第一消息为UE上下文变更请求消息，即F1标准接口消息(如UE Context Modification Required)。该第一消息中承载着SUL载波配置信息以及指示UE上报SUL载波的部分宽带(bandwidth part，BWP)的直流(direct current，DC)子载波位置的指示信息。
或者，该第一消息可以包括SUL载波配置信息以及请求信息，该请求信息用于请求SUL载波的BWP的DC子载波位置信息。
本申请中，一个载波上可能存在一个或者多个BWP。对于其中某个BWP来说，又可以包含多个子载波，这些子载波中，会存在一个DC子载波，该DC子载波可以称之为该载波的BWP的DC子载波，或者称之为该载波的BWP对应的DC子载波。
S240步骤，CU接收到该第一消息后，将SUL载波配置信息和指示UE上报SUL载波的BWP的DC子载波位置的指示信息通过重配置消息发送给UE。
S250步骤，UE收到重配置消息后，向CU发送重配置完成消息。
该重配置完成消息中携带有SUL载波的BWP的DC子载波的位置信息。示例性的，该SUL载波的BWP的DC子载波的位置信息可以携带在UplinkTxDirectCurrentList信元中。
S260步骤，CU将上述SUL载波的BWP的DC子载波的位置信息发送至DU，从而DU可以确定BWP对应的DC子载波位置。
可选地，该SUL载波的BWP的DC子载波的位置信息可承载于F1标准接口消息中，例如UE上下文变更确认消息(UE Context Modification Confirm)。
当然，该SUL载波的BWP的DC子载波的位置信息还可通过CU发送给DU的其它消息承载，例如通过特定处理后新增加的F1接口字段，上述UE Context Modification Confirm仅为举例，本申请对承载SUL载波的BWP对应的DC子载波位置信息的消息不做限制。
应理解，上述SUL载波的BWP可以是一个，也可以是多个，在此不做限制。
S270步骤，DU根据SUL载波的BWP对应的DC子载波的位置信息确定SUL载波的BWP对应的DC子载波位置后，将DC子载波位置对应的资源单元(resource element，RE)设置为零RE。
应理解，DC子载波位置对应的RE可以是多个，此处是将DC子载波位置对应的至少一个RE设置为零RE，也就是说在DC子载波位置对应的至少一个RE不发送数据，这 样就可以解决泄露到输出口或输入口的本振信号在该至少一个RE带来的干扰。
完成载波切换后，UE与基站通过SUL载波上行通信。
图3是适用于本申请的另一实施例的独立组网场景下无线通信的交互流程图，从图3中可以看出方法300包括：
S310步骤，UE初始接入SUL小区，此时UE与基站之间通过SUL载波上行通信。
S320步骤，DU判断UE移动到上行覆盖良好区域，此时可以将SUL载波切换为NUL载波。
S330步骤，DU向CU发送第一消息。
可选地，该第一消息为UE上下文变更请求消息，即F1标准接口消息(如UE Context Modification Required)。该第一消息中承载着NUL载波配置信息以及指示UE上报NUL载波的BWP的DC子载波位置的指示信息。
或者，该第一消息可以包括NUL载波配置信息以及请求信息，该请求信息用于请求NUL载波的BWP的DC子载波位置信息。
S340步骤，CU接收到该第一消息后，将NUL载波配置信息和指示UE上报NUL载波的BWP的DC子载波位置的指示信息通过重配置消息发送给UE。
S350步骤，UE收到重配置消息后，向CU发送重配置完成消息。
该重配置完成消息中携带有NUL载波的BWP的DC子载波的位置信息。示例性的，该NUL载波的BWP的DC子载波的位置信息可以携带在UplinkTxDirectCurrentList信元中。
S360步骤，CU将上述NUL载波的BWP的DC子载波的位置信息发送至DU，从而DU可以确定BWP的DC子载波位置。
可选地，该NUL载波的BWP的DC子载波的位置信息可承载于F1标准接口消息中，例如UE Context Modification Confirm消息。
当然，该NUL载波的BWP的DC子载波的位置信息还可通过CU发送给DU的其它消息承载，例如通过特定处理后新增加的F1接口字段，上述UE Context Modification Confirm消息仅为举例，本申请对承载NUL载波的BWP的DC子载波位置信息的消息不做限制。
应理解，上述NUL载波对应的BWP可以是一个，也可以是多个，在此不做限制。
S370步骤，DU根据NUL载波的BWP的DC子载波的位置信息确定NUL载波的BWP的DC子载波位置后，将DC子载波位置对应的RE设置为零RE。
应理解，DC子载波位置对应的RE可以是多个，此处是将DC子载波位置对应的至少一个RE设置为零RE。
完成载波切换后，UE与基站通过NUL载波上行通信。
图2和图3的无线通信交互都是在独立组网模式中UE载波切换的场景中进行的，需要说明的是，图2中UE初始接入的NUL载波是第一上行载波，切换后的SUL载波是第二上行载波，图3中UE初始接入的SUL载波是第一上行载波，切换后的NUL载波是第二上行载波，但本申请不限制第一上行载波和第二上行载波，只要是在载波切换场景下，网络设备，例如DU可以获得第二上行载波的BWP的DC子载波位置信息都属于本申请保护的范围。
图4是适用于本申请实施例的非独立组网场景下无线通信系统400的示意图。
如图4所示，该无线通信系统400可以包括至少两个网络设备，例如，图4所示的网络设备。该无线通信系统400还可以包括至少一个终端设备，例如图4所示的终端设备。终端设备与网络设备之间、终端设备与终端设备之间可以建立无线连接，进行无线通信，发送设备可以通过控制信息指示数据的调度信息，以便接收设备根据控制信息正确地接收数据。
应理解，该终端设备包括的具体设备同图1中的终端设备，为了简洁，在此不做赘述。
应理解，长期演进系统(Long Term Evolution,LTE)中的网络设备可以包括演进型节点B(evolved Node B，eNB)、无线网络控制器(Radio Network Controller，RNC)、节点B(Node B，NB)、基站控制器(Base Station Controller，BSC)、基站收发台(Base Transceiver Station，BTS)、家庭基站(例如，Home evolved NodeB，或Home Node B，HNB)、基带单元(Base Band Unit，BBU)，无线保真(Wireless Fidelity，WIFI)系统中的接入点(Access Point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(Transmission and Reception Point，TRP)等。
NR系统中网络设备如图1中的网络设备，为了简洁，在此不做赘述。
图5为本申请实施例提供的非独立组网场景下的无线通信交互流程图，从图5中可以看出方法500包括：
S510步骤，UE在上行覆盖良好的区域从NUL小区接入，进入连接态。
应理解，此时UE接入的NUL小区是属于gNB的，在此之前，UE可能初始接入的是eNB的NUL小区，eNB向UE发送异系统事件测量，指示UE测量gNB的信号，并将测量报告反馈给eNB，eNB收到UE上报的异系统测量报告后，决定为UE添加gNB作为辅基站，同时将测量报告发送到gNB。gNB根据测量报告中的信号强度选择NUL小区让UE接入，进入连接态，此时UE通过NUL载波与gNB通信。
S520步骤，DU判断UE移动到NUL小区的上行覆盖受限区域，此时需要将NUL载波切换为SUL载波，以提升上行吞吐率。
S530步骤，DU向CU发送第一消息。
可选地，该第一消息为UE Context Modification Required。该第一消息中承载着SUL载波配置信息以及指示UE上报SUL载波的BWP的DC子载波位置的指示信息。
或者，该第一消息可以包括SUL载波配置信息以及请求信息，该请求信息用于请求SUL载波的BWP的DC子载波的位置信息。
S540步骤，CU接收到该第一消息后，将SUL载波配置信息和指示UE上报SUL载波的BWP的DC子载波位置的指示信息通过辅节点变更请求消息(SgNB Modification Required)发送给eNB。
S550步骤，eNB将接收到的SUL载波配置信息和指示UE上报SUL载波的BWP的DC子载波位置的指示信息通过重配置消息发送给UE。
S560步骤，UE收到重配置消息后，向eNB发送重配置完成消息。
该重配置完成消息中携带有SUL载波的BWP的DC子载波的位置信息。示例性的，该SUL载波的BWP的DC子载波的位置信息可以携带在UplinkTxDirectCurrentList信元中。
S570步骤，eNB向CU发送辅节点变更确认消息(SgNB Modification Confirm)。
该辅节点变更确认消息中携带有SUL载波的BWP的DC子载波的位置信息。示例性的，该SUL载波的BWP的DC子载波的位置信息可以携带在UplinkTxDirectCurrentList信元中。
S580步骤，CU将上述SUL载波的BWP的DC子载波的位置信息发送至DU，从而DU可以确定BWP的DC子载波位置。
可选地，该SUL载波的BWP的DC子载波的位置信息可承载于F1标准接口消息中，例如UE Context Modification Confirm。
同独立组网场景，该SUL载波的BWP的DC子载波的位置信息还可通过CU发送给DU的其它消息承载，例如通过特定处理后新增加的F1接口字段，上述UE Context Modification Confirm仅为举例，本申请对承载SUL载波的BWP的DC子载波的位置信息的消息不做限制。
应理解，上述SUL载波对应的BWP可以是一个，也可以是多个，在此不做限制。
S590步骤，DU根据SUL载波的BWP的DC子载波的位置信息确定SUL载波的BWP的DC子载波位置后，将DC子载波位置对应的RE设置为零RE。
应理解，DC子载波位置对应的RE可以是多个，此处是将DC子载波位置对应的至少一个RE设置为零RE。
完成载波切换后，UE与gNB通过SUL载波上行通信。
图6为本申请的另一实施例提供的非独立组网场景下的无线通信交互流程图，从图6中可以看出方法600包括：
S610步骤，UE初始接入SUL小区，此时UE通过SUL载波与gNB通信。
S620步骤，当UE移动到上行覆盖良好区域，此时需要将SUL载波切换为NUL载波。
S630步骤，DU向CU发送第一消息。
可选地，该第一消息为UE Context Modification Required，该第一消息中承载着NUL载波配置信息以及指示UE上报NUL载波的BWP的DC子载波位置的指示信息。
或者该第一消息可以NUL载波配置信息以及请求信息，该请求信息用于请求NUL载波的BWP的DC子载波的位置信息。
S640步骤，CU接收到该第一消息后，将NUL载波配置信息和指示UE上报NUL载波的BWP的DC子载波位置的指示信息通过SgNB Modification Required发送给eNB。
S650步骤，eNB将接收到的NUL载波配置信息和指示UE上报NUL载波的BWP的DC子载波位置的指示信息通过重配置消息发送给UE。
S660步骤，UE收到重配置消息后，向eNB发送重配置完成消息。
该重配置完成消息中携带有NUL载波的BWP的DC子载波的位置信息。示例性的，该NUL载波的BWP的DC子载波的位置信息可以携带在UplinkTxDirectCurrentList信元中。
S670步骤，eNB向CU发送辅节点变更确认消息(SgNB Modification Confirm)。
该消息中携带有NUL载波的BWP的DC子载波的位置信息。示例性的，该NUL载波的BWP的DC子载波的位置信息可以携带在UplinkTxDirectCurrentList信元中。
S680步骤，CU将上述NUL载波的BWP的DC子载波的位置信息发送至DU，从而 DU可以确定BWP的DC子载波位置。
可选地，该NUL载波的BWP的DC子载波的位置信息可承载于F1标准接口消息中，例如UE Context Modification Confirm。
同独立组网场景，该NUL载波的BWP的DC子载波的位置信息还可通过CU发送给DU的其它消息承载，例如通过特定处理后新增加的F1接口字段，上述UE Context Modification Confirm仅为举例，本申请对承载NUL载波的BWP的DC子载波位置信息的消息不做限制。
应理解，上述NUL载波对应的BWP可以是一个，也可以是多个，在此不做限制。
S690步骤，DU根据NUL载波的BWP的DC子载波的位置信息确定NUL载波的BWP对应的DC子载波位置后，将DC子载波位置对应的RE设置为零RE。
应理解，DC子载波位置对应的RE可以是多个，此处是将DC子载波位置对应的至少一个RE设置为零RE。
完成载波切换后，UE与gNB通过NUL载波上行通信。
同上，图5和图6的无线通信交互都是在独立组网模式中UE载波切换的场景中进行的，需要说明的是，图5中UE初始接入的NUL载波是第一上行载波，切换后的SUL载波是第二上行载波，图6中UE初始接入的SUL载波是第一上行载波，切换后的NUL载波是第一上行载波，但本申请不限制第一上行载波和第二上行载波，只要是在载波切换场景下，网络设备，例如DU可以获得第二上行载波的BWP的DC子载波位置信息都属于本申请保护的范围。
应理解，上述实施例中的将RE设置为零RE可通过对数似然比(Log-likelihood Ratio，LLR)的方式。
基于上述方案，在上行载波切换的场景下，DU可以获知第二上行载波的BWP的DC子载波的位置，从而使得DU处理本振信号泄露带来的干扰时，能够确定DC子载波的位置。然后DU可以通过对数似然比或其他的方式将该DC子载波对应的至少一个资源单元RE设置为零RE，也就是说在该DC子载波对应的至少一个RE上不发送数据，从而解决泄露到输出口或输入口的本振信号在该RE带来的干扰。
以上，结合图1至图6，详细说明了本申请实施例提供的方法。可以理解的是，各个网元，例如终端设备或者网络设备，为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对发射端设备或者接收端设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以使用硬件的形式实现，也可以使用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。下面以使用对应各个功能划分各个功能模块为例进行说明。
以下，结合图7至图10详细说明本申请实施例提供的装置。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的内容可以参见上文方法实施例，为了简洁，这里不再赘述。
图7是本申请实施例提供的终端设备的示意性框图。
终端设备700可对应于本申请实施例的方法200、300、500或600中的终端设备，该终端设备700可以包括用于执行方法200、300、500或600中终端设备执行的方法的单元。并且，该终端设备中的各单元和上述其他操作和/或功能分别为了实现方法200、300、500或600的相应流程。
如图7所示，该终端设备包括收发单元和处理单元。该收发单元用于接收来自网络设备的指示信息，该指示信息指示终端设备发送第二上行载波的BWP的DC子载波的位置信息，并向该网络设备发送该第二上行载波的BWP的DC子载波的位置信息。
可选地，该DC子载波的位置信息承载于重配置完成消息中，该指示信息承载于重配置消息或辅节点变更请求消息中。
还应理解，该终端设备中的收发单元可对应于图9中示出的终端设备中的收发器，该终端设备中的处理单元可对应于图9中示出的终端设备中的处理器。
还应理解，该终端设备中的收发单元可通过通信接口(如收发器或输入/输出接口)实现，例如可对应于图9中示出的终端设备中的收发器，该终端设备中的处理单元可通过至少一个处理器实现，例如可对应于图9中示出的终端设备中的处理器，该终端设备中的处理单元还可以通过至少一个逻辑电路实现。
可选地，终端设备还可以包括存储单元，该存储单元可以用于存储指令或者数据，处理单元可以调用该存储单元中存储的指令或者数据，以实现相应的操作。
应理解，上述装置的有益效果可参见在上述方法实施例中的说明，为了简洁，在此不再赘述。
图8是本申请实施例提供的网络设备的示意性框图。
应理解，网络设备800可对应于本申请实施例的方法200、300、500或600中的DU，该网络设备可以包括用于执行方法200、300、500或600中网络设备执行的方法的单元。并且，该网络设备中的各单元和上述其他操作和/或功能分别为了实现方法200、300、500或600的相应流程。
如图8所示，该网络设备可以包括收发单元和处理单元，该收发单元用于接收来自CU的第二上行载波的BWP对应的DC子载波的位置信息，该处理单元用于根据该DC子载波的位置信息，确定该DC子载波的位置，该处理单元还用于将该DC子载波对应的至少一个RE设置为零资源单元。
可选地，在该收发单元接收来自CU的第二上行载波的BWP的直流DC子载波的位置信息之前，该收发单元向CU发送该第二上行载波配置信息以及请求消息，该请求消息用于请求该第二上行载波的BWP的DC子载波位置信息。
可选地，上述DC子载波的位置信息承载于用户设备上下文变更确认消息中。
应理解，网络设备800也可对应于本申请实施例的方法200、300、500或600中的CU，该网络设备可以包括用于执行方法200、300、500或600中CU执行的方法的单元。并且，该网络设备中的各单元和上述其他操作和/或功能分别为了实现方法200、300、500 或600的相应流程。
该网络装置可以包括收发单元和处理单元，该收发单元用于发送指示信息，指示终端设备发送第二上行载波的BWP的DC子载波的位置信息，该收发单元还用于接收来自终端设备的该第二上行载波的BWP的DC子载波的位置信息，并向DU发送该DC子载波的位置信息。
可选地，该收发单元发送指示信息之前，接收来自DU的该第二上行载波配置信息以及请求消息，该请求消息用于请求该第二上行载波的BWP的DC子载波位置信息。
具体地，CU向DU发送的该DC子载波的位置信息可承载于用户设备上下文变更确认消息中。该指示信息可承载于重配置消息或辅节点变更请求消息中。CU接收的该DC子载波的位置信息可承载于重配置完成消息或辅节点变更确认消息中。
还应理解，该网络设备中的收发单元为可对应于图10中示出的网络设备中的收发器，该网络设备中的处理单元可对应于图10中示出的网络设备中的处理器。
可选地，网络设备还可以包括存储单元，该存储单元可以用于存储指令或者数据，处理单元可以调用该存储单元中存储的指令或者数据，以实现相应的操作。
还应理解，该网络设备中的收发单元为可通过通信接口(如收发器或输入/输出接口)实现，例如可对应于图10中示出的网络设备中的收发器，该网络设备中的处理单元可通过至少一个处理器实现，例如可对应于图10中示出的网络设备中的处理器，该网络设备中的处理单元可通过至少一个逻辑电路实现。
图9是本申请实施例提供的终端设备的结构示意图。该终端设备可应用于如图1或4所示的系统中，执行上述方法实施例中终端设备的功能。如图9所示，该终端设备包括处理器和收发器。可选地，该终端设备还包括存储器。其中，处理器、收发器和存储器之间可以通过内部连接通路互相通信，传递控制和/或数据信号，该存储器用于存储计算机程序，该处理器用于从该存储器中调用并运行该计算机程序，以控制该收发器收发信号。可选地，终端设备还可以包括天线，用于将收发器输出的上行数据或上行控制信令通过无线信号发送出去。
上述处理器可以和存储器可以合成一个处理装置，处理器用于执行存储器中存储的程序代码来实现上述功能。具体实现时，该存储器也可以集成在处理器中，或者独立于处理器。该处理器可以与图7中的处理单元对应。
上述收发器可以与图7中的收发单元对应。收发器可以包括接收器(或称接收机、接收电路)和发射器(或称发射机、发射电路)。其中，接收器用于接收信号，发射器用于发射信号。
应理解，图9所示的终端设备能够实现方法200、300、500或600中涉及终端设备的各个过程。终端设备中的各个模块的操作和/或功能，分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述，为避免重复，此处适当省略详细描述。
上述处理器可以用于执行前面方法实施例中描述的由终端设备内部实现的动作，而收发器可以用于执行前面方法实施例中描述的终端设备向网络设备发送或从网络设备接收的动作。具体请见前面方法实施例中的描述，此处不再赘述。
可选地，上述终端设备还可以包括电源，用于给终端设备中的各种器件或电路提供电源。
图10是本申请实施例提供的网络设备(CU或DU)的结构示意图。该网络设备可应用于如图1或4所示的系统中，执行上述方法实施例中网络设备的功能。如图10所示，该网络设备包括处理器和收发器。可选地，该网络设备还包括存储器。其中，处理器、收发器和存储器之间可以通过内部连接通路互相通信，传递控制和/或数据信号，该存储器用于存储计算机程序，该处理器用于从该存储器中调用并运行该计算机程序，以控制该收发器收发信号。可选地，网络设备还可以包括天线，用于将收发器输出的下行数据或下行控制信令通过无线信号发送出去。
上述处理器可以和存储器可以合成一个处理装置，处理器用于执行存储器中存储的程序代码来实现上述功能。具体实现时，该存储器也可以集成在处理器中，或者独立于处理器。该处理器可以与图8中的处理单元对应。
上述收发器可以与图8中的收发单元对应。收发器可以包括接收器(或称接收机、接收电路)和发射器(或称发射机、发射电路)。其中，接收器用于接收信号，发射器用于发射信号。
应理解，图10所示的网络设备能够实现方法200、300、500或600中涉及CU和DU的各个过程。网络设备中的各个模块的操作和/或功能，分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述，为避免重复，此处适当省略详细描述。
上述处理器可以用于执行前面方法实施例中描述的由网络设备内部实现的动作，而收发器可以用于执行前面方法实施例中描述的网络设备向终端设备发送或从终端设备接收的动作。具体请见前面方法实施例中的描述，此处不再赘述。
可选地，上述网络设备还可以包括电源，用于给网络设备中的各种器件或电路提供电源。
应理解，图10所示出的网络设备仅为网络设备的一种可能的架构，而不应对本申请构成任何限定。本申请所提供的方法可适用于其他架构的网络设备。例如，CU、DU或者是包括CU和DU的网络设备等。本申请对于网络设备的具体架构不作限定。
本申请实施例还提供了一种通信装置，包括处理器和接口。处理器与接口耦合，该接口用于输入和/或输出信息，该处理器用于执行上述任一方法实施例中的方法。
应理解，当该通信装置为网络设备或终端设备时，该接口可以是收发器，或，输入/输出接口。当该通信装置为芯片或芯片系统时，则该接口可以是该芯片或芯片系统上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等。
还应理解，上述处理装置可以是一个或多个芯片。例如，该处理装置可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是专用集成芯片(application specific integrated circuit，ASIC)，还可以是系统芯片(system on chip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器， 闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
应注意，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
根据本申请实施例提供的方法，本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行图2、3、5或6所示实施例中的方法。
根据本申请实施例提供的方法，本申请还提供一种计算机可读介质，该计算机可读介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行图2、3、5或6所示实施例中的方法。
根据本申请实施例提供的方法，本申请还提供一种系统，其包括前述的一个或多个终端设备以及一个或多个网络设备。
上述各个装置实施例中网络设备与终端设备和方法实施例中的网络设备或终端设备完全对应，由相应的模块或单元执行相应的步骤，例如通信单元(收发器)执行方法实施例中接收或发送的步骤，除发送、接收外的其它步骤可以由处理单元(处理器)执行。具体单元的功能可以参考相应的方法实施例。其中，处理器可以为一个或多个。
在本说明书中使用的术语“部件”、“模块”、“系统”等用于表示计算机相关的实 体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部件可驻留在进程和/或执行线程中，部件可位于一个计算机上和/或分布在2个或更多计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统和/或网络间的另一部件交互的二个部件的数据，例如通过信号与其它系统交互的互联网)的信号通过本地和/或远程进程来通信。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，该单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本申请实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在上述实施例中，各功能单元的功能可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。该计算机程序产品包括一个或多个计算机指令(程序)。在计算机上加载和执行该计算机程序指令(程序)时，全部或部分地产生按照本申请实施例该有的流程或功能。该计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。该计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，该计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。该计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。该可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
该功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软 件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施该方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求和说明书的保护范围为准。

Claims (33)

  1. 一种通信方法，其特征在于，包括：
    分布式单元DU通过第一上行载波与终端设备进行通信；
    所述DU接收来自集中式单元CU的第二上行载波的部分带宽BWP的直流DC子载波的位置信息；
    所述DU根据所述DC子载波的位置信息，确定所述DC子载波的位置。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述DU将所述DC子载波对应的至少一个资源单元RE设置为零RE。
  3. 根据权利要求1或2所述的方法，其特征在于，在所述DU接收来自CU的第二上行载波的BWP的DC子载波的位置信息之前，所述方法还包括：
    所述DU向所述CU发送所述第二上行载波配置信息以及请求消息，所述请求消息用于请求所述第二上行载波的BWP的DC子载波的位置信息。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述DC子载波的位置信息承载于用户设备上下文变更确认消息中。
  5. 一种通信方法，其特征在于，包括：
    集中式单元CU通过第一上行载波与终端设备进行通信；
    CU发送指示信息，所述指示信息指示所述终端设备发送第二上行载波的部分带宽BWP的直流DC子载波的位置信息；
    所述CU接收来自终端设备的所述第二上行载波的BWP的DC子载波的位置信息；
    所述CU向分布式单元DU发送所述第二上行载波的BWP的DC子载波的位置信息。
  6. 根据权利要求5所述的方法，其特征在于，所述DC子载波的位置信息用于指示将所述DC子载波的位置对应的资源单元RE设置为零RE。
  7. 根据权利要求5或6所述的方法，其特征在于，在所述CU发送指示信息之前，所述方法还包括：
    所述CU接收来自所述DU的所述第二上行载波配置信息以及请求消息，所述请求消息用于请求所述第二上行载波的BWP的DC子载波位置信息。
  8. 根据权利要求5至7中任一项所述的方法，其特征在于，所述CU向所述DU发送的所述DC子载波的位置信息承载于用户设备上下文变更确认消息中。
  9. 根据权利要求5至8中任一项所述的方法，其特征在于，所述指示信息承载于重配置消息或辅节点变更请求消息中。
  10. 根据权利要求5至9中任一项所述的方法，其特征在于，所述CU接收的所述DC子载波的位置信息承载于重配置完成消息或辅节点变更确认消息中。
  11. 一种通信方法，其特征在于，包括：
    终端设备通过第一上行载波与网络设备进行通信；
    所述终端设备接收来自所述网络设备的指示信息，所述指示信息指示所述终端设备发送第二上行载波的部分带宽BWP的直流DC子载波的位置信息；
    所述终端设备发送所述第二上行载波的BWP的DC子载波的位置信息；
    所述终端设备通过第二上行载波与所述网络设备进行通信。
  12. 根据权利要求11所述的方法，其特征在于，所述DC子载波的位置信息承载于重配置完成消息中。
  13. 根据权利要求11或12所述的方法，其特征在于，所述指示信息承载于重配置消息或辅节点变更请求消息中。
  14. 根据权利要求11至13中任一项所述的方法，其特征在于，所述第一上行载波为普通上行载波NUL，所述第二上行载波为扩展上行载波SUL。
  15. 一种通信装置，其特征在于，包括：
    收发单元，通过第一上行载波与终端设备进行通信；
    所述收发单元，用于接收来自集中式单元CU的第二上行载波的部分带宽BWP的直流DC子载波的位置信息；
    处理单元，用于根据所述DC子载波的位置信息，确定所述DC子载波的位置。
  16. 根据权利要求15所述的装置，其特征在于，所述处理单元还用于将所述DC子载波对应的至少一个资源单元RE设置为零RE。
  17. 根据权利要求15或16所述的装置，其特征在于，
    所述收发单元，还用于在接收来自所述CU的第二上行载波的BWP的DC子载波的位置信息之前，向所述CU发送所述第二上行载波配置信息以及请求消息，所述请求消息用于请求所述第二上行载波的BWP的DC子载波的位置信息。
  18. 根据权利要求15至17中任一项所述的装置，其特征在于，所述DC子载波的位置信息承载于用户设备上下文变更确认消息中。
  19. 一种通信装置，其特征在于，包括：
    收发单元，通过第一上行载波与终端设备进行通信；
    所述收发单元，用于发送指示信息，所述指示信息指示所述终端设备发送第二上行载波的部分带宽BWP的直流DC子载波的位置信息；
    所述收发单元，还用于接收来自终端设备的所述第二上行载波的BWP的DC子载波的位置信息；
    所述收发单元，还用于向分布式单元DU发送所述第二上行载波的BWP对应的DC子载波的位置信息。
  20. 根据权利要求19所述的装置，其特征在于，所述DC子载波的位置信息用于指示将所述DC子载波的位置对应的资源单元RE设置为零RE。
  21. 根据权利要求19或20所述的装置，其特征在于，
    所述收发单元，还用于在发送所述指示信息之前，接收来自所述DU的所述第二上行载波配置信息以及请求消息，所述请求消息用于请求所述第二上行载波的BWP的DC子载波的位置信息。
  22. 根据权利要求19至21中任一项所述的装置，其特征在于，所述收发单元发送的DC子载波的位置信息承载于用户设备上下文变更确认消息中。
  23. 根据权利要求19至22中任一项所述的装置，其特征在于，所述指示信息承载于重配置消息或辅节点变更请求消息中。
  24. 根据权利要求19至23中任一项所述的装置，其特征在于，所述收发单元接收的 所述DC子载波的位置信息承载于重配置完成消息或辅节点变更确认消息中。
  25. 一种通信装置，其特征在于，包括：
    收发单元，通过第一上行载波与网络设备进行通信；
    所述收发单元，用于接收来自所述网络设备的指示信息，所述指示信息指示所述终端设备发送第二上行载波的部分带宽BWP的直流DC子载波的位置信息；
    所述收发单元，还用于发送所述第二上行载波的BWP的DC子载波的位置信息；
    所述收发单元，通过第二上行载波与所述网络设备进行通信。
  26. 根据权利要求25所述的装置，其特征在于，所述DC子载波的位置信息承载于重配置完成消息中。
  27. 根据权利要求25或26所述的装置，其特征在于，所述指示信息承载于重配置消息或辅节点变更请求消息中。
  28. 根据权利要求15至27中任一项所述的装置，其特征在于，所述第一上行载波为普通上行载波NUL，所述第二上行载波为扩展上行载波SUL。
  29. 一种通信装置，其特征在于，包括：
    存储器，用于存储计算机指令；
    处理器，用于执行所述存储器中存储的计算机指令，使得所述用于通信的装置执行如权利要求1至4中任一项所述的方法或执行如权利要求5至10中任一项所述的方法或执行如权利要求11至14中任一项所述的方法。
  30. 一种通信装置，其特征在于，所述通信装置用于执行如权利要求1至4中任一项所述的方法或执行如权利要求5至10中任一项所述的方法或执行如权利要求11至14中任一项所述的方法。
  31. 一种通信装置，其特征在于，包括：至少一个处理器和接口电路，涉及的计算机程序在所述至少一个处理器中执行，以使得所述通信装置执行如权利要求1至4中任一项所述的方法或执行如权利要求5至10中任一项所述的方法或执行如权利要求11至14中任一项所述的方法。
  32. 一种计算机可读存储介质，其特征在于，其上存储有计算机程序，所述计算机程序被用于通信的装置执行时，使得所述用于通信的装置执行如权利要求1至4中任一项所述的方法或执行如权利要求5至10中任一项所述的方法或执行如权利要求11至14中任一项所述的方法。
  33. 一种计算机程序产品，其特征在于，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行如权利要求1至4中任一项所述的方法或执行如权利要求5至10中任一项所述的方法或执行如权利要求11至14中任一项所述的方法。
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