WO2018082469A1 - 一种指示直流子载波的方法及装置、电子设备 - Google Patents

一种指示直流子载波的方法及装置、电子设备 Download PDF

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Publication number
WO2018082469A1
WO2018082469A1 PCT/CN2017/107385 CN2017107385W WO2018082469A1 WO 2018082469 A1 WO2018082469 A1 WO 2018082469A1 CN 2017107385 W CN2017107385 W CN 2017107385W WO 2018082469 A1 WO2018082469 A1 WO 2018082469A1
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Prior art keywords
information
virtual carrier
subcarrier
virtual
carrier
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PCT/CN2017/107385
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English (en)
French (fr)
Inventor
李剑
郝鹏
鲁照华
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present disclosure relates to the field of Long Term Evolution (LTE) and NR (New Radio) mobile communication networks, and particularly relates to a Direct Current (DC) subcarrier under NR or LTE and NR coexistence.
  • LTE Long Term Evolution
  • NR New Radio
  • DC Direct Current
  • the subcarriers at the carrier center frequency point are called DC subcarriers. Due to the influence of the local crystal leakage, high interference problems may occur in adjacent multiple subcarriers. In the LTE system, DC subcarriers are not applied for downlink downlink. Transmission, the uplink uses a method of shifting 1/2 subcarriers due to the continuous allocation of the entire system bandwidth.
  • the embodiment of the invention provides a method and device for indicating a DC subcarrier, and an electronic device, so that the receiving end can know whether there is a DC subcarrier in the receiving bandwidth, thereby obtaining a corresponding data receiving method to ensure correct data reception, and at the same time, It effectively reduces signaling overhead and is more flexible to adapt to the different needs of 5G NR scenarios.
  • the first communication node sends one or more sets of virtual carrier information to the second communication node, wherein the virtual carrier information includes at least one of the following:
  • the number of virtual carriers, the bandwidth of the virtual carrier, the virtual carrier index information, the subcarrier spacing used by the virtual carrier, and the number of fast Fourier transform FFT points used by the virtual carrier are the number of virtual carriers, the bandwidth of the virtual carrier, the virtual carrier index information, the subcarrier spacing used by the virtual carrier, and the number of fast Fourier transform FFT points used by the virtual carrier.
  • the second communication node receives at least one of the following ones: one or more sets of virtual carrier information, subcarrier spacing indication information, group identification information of virtual carrier information, resource allocation range information, dynamic resource allocation indication information, Physical carrier indication information;
  • the second communication node determines the location of the DC subcarrier based on the received message, and determines whether there is a DC subcarrier in the actual data transmission, and selects a different method for data reception according to the judgment result.
  • the device for indicating a DC DC subcarrier provided by the embodiment of the present invention is applied to a first communication node, where the device includes:
  • a sending unit configured to send one or more sets of virtual carrier information to the second communications node, where the virtual carrier information includes at least one of the following:
  • the number of virtual carriers, the bandwidth of the virtual carrier, the virtual carrier index information, the subcarrier spacing used by the virtual carrier, and the number of fast Fourier transform FFT points used by the virtual carrier are the number of virtual carriers, the bandwidth of the virtual carrier, the virtual carrier index information, the subcarrier spacing used by the virtual carrier, and the number of fast Fourier transform FFT points used by the virtual carrier.
  • An apparatus for a DC subcarrier provided by another embodiment of the present invention is applied to a second communication node, where the apparatus includes:
  • the receiving unit is configured to receive at least one of the following: the one or more sets of virtual carrier information, the subcarrier spacing indication information, the group identification information of the virtual carrier information, the resource allocation range information, and the dynamic resource allocation indication information
  • the physical carrier indication information determines the location of the DC subcarrier, and determines whether there is a DC subcarrier in the actual data transmission, and selects different methods for data reception according to the judgment result.
  • An electronic device provided by an embodiment of the present invention includes a processor and a memory storing the processor executable instructions, when the instruction is executed by the processor, the processor performs the method step of indicating a DC subcarrier .
  • Embodiments of the present invention also provide a computer readable storage medium having stored thereon computer executable instructions that, when executed by a processor, implement any of the methods described above.
  • the first communications node sends one or more sets of virtual carrier information to the second communications node, where the virtual carrier information includes at least one of the following: the number of virtual carriers, the bandwidth of the virtual carrier, Virtual carrier index information, subcarrier spacing used by virtual carriers, virtual The fast Fourier transform FFT points used by the pseudo carrier.
  • the second communication node receives at least one of the following ones: one or more sets of virtual carrier information, subcarrier spacing indication information, group identification information of virtual carrier information, resource allocation range information, dynamic resource allocation indication information,
  • the physical carrier indicates information; the second communication node determines the location of the DC subcarrier based on the received message, and determines whether there is a DC subcarrier in the actual data transmission, and selects a different method for data reception according to the judgment result.
  • the solution of the embodiment of the present invention enables the receiving end to know whether there is a DC subcarrier in the receiving bandwidth, thereby obtaining a corresponding data receiving method, ensuring correct data reception, and effectively reducing signaling overhead, and more flexibly adapting to the 5G NR. Different requirements of the scene.
  • FIG. 1 is a schematic flowchart 1 of a method for indicating a DC subcarrier according to an embodiment of the present invention
  • FIG. 2 is a second schematic flowchart of a method for indicating a DC subcarrier according to an embodiment of the present invention
  • FIG. 3 is a first schematic diagram showing the relationship between the number of virtual carriers, the physical carrier bandwidth, the subcarrier spacing, and the number of FFT points according to an embodiment of the present invention
  • FIG. 4 is a second schematic diagram showing the relationship between the number of virtual carriers, the physical carrier bandwidth, the subcarrier spacing, and the number of FFT points according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram 3 of a relationship between a virtual carrier number, a physical carrier bandwidth, a subcarrier spacing, and an FFT point according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a receiving bandwidth of a second communication node according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of actual resource allocation of a second communication node according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of actual resource allocation of a second communication node according to an embodiment of the present invention.
  • FIG. 9 is a signaling flowchart 1 of an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a resource block grid RB Grid according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of actual resource allocation of a second communication node according to an embodiment of the present invention.
  • FIG. 13 is a first schematic structural diagram of an apparatus for indicating a DC subcarrier according to an embodiment of the present invention.
  • FIG. 14 is a second schematic structural diagram of an apparatus for indicating a DC subcarrier according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
  • FIG. 16 is a fourth schematic diagram showing the relationship between the number of virtual carriers, the physical carrier bandwidth, the subcarrier spacing, and the number of FFT points according to an embodiment of the present invention.
  • the receiving end needs to know whether there is a DC subcarrier on the receiving bandwidth, which may be a regulation. Or notified by signaling. Wherein, if there is no DC subcarrier, all subcarriers in the receiving bandwidth are transmitted; if there is a DC subcarrier, the operation method is to be studied. Regardless of how the transmitting end operates on the DC subcarrier, there must be a mechanism for the receiving end to know whether there is a DC subcarrier in the receiving bandwidth, thereby obtaining a corresponding data receiving method and ensuring correct reception of the data, which is currently to be solved.
  • the problem a simple method is to directly inform the terminal of the location of the DC subcarrier by signaling, which will cause huge signaling overhead.
  • FIG. 1 is a schematic flowchart 1 of a method for indicating a DC subcarrier according to an embodiment of the present invention.
  • Step 101 The first communication node sends one or more sets of virtual carrier information to the second communication node, where the virtual carrier information includes at least one of the following: the number of virtual carriers, the bandwidth of the virtual carrier, the virtual carrier index information, The subcarrier spacing used by the virtual carrier and the number of FFT points used by the virtual carrier.
  • the method further includes:
  • the first communication node sends at least one of the following: subcarrier spacing indication information, group identification information of virtual carrier information to the second communication node;
  • the group virtual carrier information has a binding relationship.
  • the method further includes:
  • the first communication node sends the intra-group resource allocation range information of the set of virtual carrier information in the binding relationship to the second communication node, where the intra-group resource allocation range information includes a size and a location, where the location refers to a relative positional relationship between the resource allocation range and each virtual carrier in the group; the resource allocation range is distributed on one or more of the virtual carriers.
  • the method further includes:
  • the first communication node sends dynamic resource allocation indication information to the second communication node, where the dynamic resource allocation indication information refers to a time/frequency domain resource occupied by the actual data transmission.
  • the method further includes:
  • the first communication node sends the physical carrier indication information to the second communication node, where the physical carrier indication information refers to at least one of the following: a bandwidth of the physical carrier, a quantity of the physical carrier, physical carrier identification information, and a spectrum resource occupied by the physical carrier.
  • the first communication node indicates, according to information sent to the second communication node, whether the current resource allocation of the second communication node includes DC subcarriers of one or more virtual carriers.
  • the first communication node performs rate matching, and accordingly, the DC subcarrier of the virtual carrier does not map data.
  • the virtual carrier index information has a corresponding relationship with the location of the physical carrier.
  • the number of the virtual carriers and the bandwidth of the virtual carrier are related to at least the bandwidth of the physical carrier, the subcarrier spacing of the virtual carrier, and the number of FFT points.
  • the resource allocation range information is determined based on the capability reported by the second communication node, and the capability includes a supported FFT point, or a supported bandwidth, or a supported FFT point and a supported bandwidth.
  • the subcarrier spacings used by the virtual carriers in the multiple sets of virtual carrier information have a 2 n multiple relationship with each other, where n is an integer.
  • the subcarrier spacing indication information refers to a subcarrier spacing used when the second communication node receives data.
  • the one or more sets of virtual carrier information, subcarrier spacing indication information, group identification information of virtual carrier information, resource allocation range information, dynamic resource allocation indication information, and physical carrier indication information are carried in the following
  • the at least one message is sent: a broadcast message, a system message, and a downlink control message.
  • FIG. 2 is a schematic flowchart 2 of a method for indicating a DC subcarrier according to an embodiment of the present invention.
  • the method for indicating a DC subcarrier in this example is applied to a second communication node.
  • the method for indicating a DC subcarrier is shown in FIG. 2 .
  • Step 201 The second communication node receives at least one of the following ones: one or more sets of virtual carrier information, subcarrier spacing indication information, group identification information of virtual carrier information, resource allocation range information, and dynamic resource allocation. Indication information, physical carrier indication information.
  • Step 202 The second communication node receives at least one of the following: the one or more sets of virtual carrier information, the subcarrier spacing indication information, the group identification information of the virtual carrier information, the resource allocation range information, and the dynamic resource allocation. Indication information, physical carrier indication information.
  • the virtual carrier information includes at least one of the following:
  • the number of virtual carriers, the bandwidth of the virtual carrier, the virtual carrier index information, the subcarrier spacing used by the virtual carrier, and the number of FFT points used by the virtual carrier are the number of virtual carriers, the bandwidth of the virtual carrier, the virtual carrier index information, the subcarrier spacing used by the virtual carrier, and the number of FFT points used by the virtual carrier.
  • the group virtual carrier information has a binding relationship.
  • the resource allocation range information includes a size and a location, where the location refers to a relative location relationship between the resource allocation range and each virtual carrier in the group; the resource allocation range may be distributed in one or more On the virtual carrier.
  • the dynamic resource allocation indication information refers to a time/frequency domain resource occupied by actual data transmission.
  • the physical carrier indication information refers to at least one of the following: a bandwidth of a physical carrier, a number of physical carriers, physical carrier identification information, and a spectrum resource occupied by a physical carrier.
  • the virtual carrier index information has a corresponding relationship with the location of the physical carrier.
  • the number of the virtual carriers and the bandwidth of the virtual carrier are related to at least the bandwidth of the physical carrier, the subcarrier spacing of the virtual carrier, and the number of FFT points.
  • the resource allocation range information is determined based on the capability reported by the second communication node, and the capability includes a supported FFT point, or a supported bandwidth, or a supported FFT point and a supported bandwidth.
  • the subcarrier spacings used by the virtual carriers in the multiple sets of virtual carrier information have a 2 n multiple relationship with each other, where n is an integer.
  • the subcarrier spacing indication information refers to a subcarrier spacing used when the second communication node receives data.
  • the one or more sets of virtual carrier information, subcarrier spacing indication information, group identification information of virtual carrier information, resource allocation range information, dynamic resource allocation indication information, and physical carrier indication information are carried in the following
  • the at least one message is sent: a broadcast message, a system message, and a downlink control message.
  • the judgment result refers to whether there is a DC subcarrier or no DC subcarrier in the actual data transmission.
  • the different method refers to that when the actual data transmission does not have a DC subcarrier, the second communication node receives all subcarriers in the bandwidth; when the actual data transmission has a DC subcarrier, Receive DC subcarriers, or adjust reception, for example, offset half subcarrier reception.
  • the second communication node is configured according to the subcarrier spacing indication information, or the group identification information of the virtual carrier information, or the group identifier information of the subcarrier spacing indication information and the virtual carrier information. Or searching for virtual carrier information in multiple sets of virtual carrier information.
  • a method for indicating a DC subcarrier according to an embodiment of the present invention is described in detail below in conjunction with an application scenario.
  • Example 1 This example provides a method for indicating a DC subcarrier. As shown in FIG. 9, the flow includes the following steps:
  • Step 901 The first communications node sends physical carrier indication information, virtual carrier indication information, received bandwidth indication information, subcarrier spacing indication information, and resource allocation indication information to the second communication node.
  • the virtual carrier indication information includes at least one of the following: the number of virtual carriers, the virtual carrier identification information, the bandwidth of the virtual carrier, the subcarrier spacing used by the virtual carrier, and the fast Fourier transform used by the virtual carrier. The number of FFT points.
  • the virtual carrier indication information includes at least the number of virtual carriers. As shown in FIG. 3, the number of virtual carriers is 1. As shown in FIG. 4, the number of virtual carriers is 2. As shown in FIG. 5, the number of virtual carriers is 4. FIG. The number of virtual carriers shown is two.
  • the virtual carrier refers to a subset of the physical carriers.
  • the virtual carrier may be equivalent to the physical carrier, as shown in FIG. 3, or a part of the physical carrier, as shown in FIG. 4, FIG. 5, and FIG.
  • the number of virtual carriers and the bandwidth of the virtual carrier are related to at least the bandwidth of the physical carrier, the subcarrier spacing, and the number of FFT points.
  • the physical carrier bandwidth is 80 MHz
  • the subcarrier is 60 KHz
  • the FFT point is 2048
  • the number of virtual carriers is 1
  • the bandwidth of each virtual carrier is 80 MHz
  • the DC subcarrier is located at the center of each virtual carrier bandwidth
  • the physical carrier bandwidth is 80 MHz
  • the subcarrier is 30 KHz
  • the FFT point is 2048
  • the virtual carrier number is 2
  • the physical carrier bandwidth is 80 MHz
  • the subcarrier is 15 KHz
  • the FFT point is 4096
  • the number of virtual carriers is 2
  • each virtual carrier bandwidth is 40MHz
  • the DC subcarrier is located at the center of each virtual carrier bandwidth; as shown in Figure 5, the physical carrier bandwidth is 80MHz, the subcarrier is 15KHz, the FFT point is 2048, and the number of virtual carriers is 4.
  • the bandwidth of each virtual carrier is 20MHz; as shown in Figure 16, the physical carrier bandwidth is 30MHz, the subcarrier is 15KHz, the number of virtual carriers is 2, the FFT point of virtual carrier 1 is 2048, the bandwidth is 20MHz, and the FFT points of virtual carrier 1 are 1024, bandwidth 10MHz, DC subcarriers are located at the center of each virtual carrier bandwidth.
  • the physical carrier refers to a certain segment or multiple pieces of spectrum resources.
  • the physical carrier indication information includes at least one of the following: a bandwidth of a physical carrier, a quantity of a physical carrier, physical carrier identification information, and a spectrum resource occupied by a physical carrier.
  • the physical carrier indication information includes at least a bandwidth of a physical carrier and a spectrum resource occupied by a physical carrier. As shown in FIG. 3, the bandwidth of the physical carrier is 80 MHz, and the frequency band occupied by the material carrier is 30000 MHz to 30080 MHz.
  • the receiving bandwidth indication information includes at least one of the following: a size of a receiving bandwidth, and location information of a receiving bandwidth.
  • the receiving bandwidth indication information refers to the size of the receiving bandwidth and the location information of the receiving bandwidth.
  • the receiving bandwidth of the second communications node 1 occupies part of the resources of the physical carrier, and corresponds to some resources in the virtual carrier 1.
  • a DC subcarrier exists in the receiving bandwidth of the second communication node 1, and a receiving bandwidth of the second communications node 2 occupies a part of resources of the physical carrier, and corresponds to a part of resources in the virtual carrier 2, where the second communications node 2 There is no DC subcarrier in the receive bandwidth.
  • the location information of the receiving bandwidth includes at least one of the following: a bandwidth of the receiving bandwidth in the physical carrier, and a positional relationship of the virtual carrier in the bandwidth.
  • the location information of the receiving bandwidth may be a starting location information and a continuous frequency domain resource information.
  • the starting location is a third physical resource block PRB of the physical carrier, and the frequency domain resource information is 10MHz or 25 PRB.
  • the receiving bandwidth refers to a bandwidth allocated when the second communication node receives data.
  • the receiving bandwidth depends on the capability of the second communication node.
  • the subcarrier spacing indication information refers to a subcarrier spacing used when the second communication node receives data.
  • the subcarrier spacing includes multiple types, for example, 3.75 kHz, 7.5 kHz, 15 kHz, 30 kHz, 60 kHz, 120 kHz, 480 kHz, 960 kHz, and a total of 8 possible subcarrier spacings, which are notified by 3 bits signaling, for example, indicating 011 corresponding subcarrier spacing. It is 30KHz.
  • the resource allocation indication information refers to a time/frequency domain resource occupied by actual data transmission.
  • the physical carrier indication information, the virtual carrier indication information, the received bandwidth indication information, the subcarrier spacing indication information, and the resource allocation indication information are carried in a broadcast message, or a system message, or a downlink control message.
  • the physical carrier indication information, the received bandwidth indication information, and the subcarrier spacing indication information are carried in a system message for transmission; and the resource allocation indication message is carried in a downlink control message for transmission.
  • the first communication node is a base station, which is referred to as Macro, Micro, Pico, Femto, Remote Radio head (RRH), Relay, Tx/Rx Point (TRP), and GNB (next generation Node B).
  • the second communication node is one or more of user equipment UE, Relay.
  • the first type of communication node is Macro and the second type of communication node is UE.
  • Step 902 The second communication node receives the physical carrier indication information, the virtual carrier indication information, the received bandwidth indication information, the subcarrier spacing indication information, and the resource allocation indication information, determines the location of the DC subcarrier based on the indication information, and determines the actual data transmission. Whether there are DC subcarriers in the middle, and different methods are selected for data reception according to different situations.
  • the different conditions refer to whether there are DC subcarriers or no DC subcarriers in the actual data transmission.
  • the different method refers to that when the actual data transmission does not have a DC subcarrier, the second communication node receives all subcarriers in the bandwidth; when the actual data transmission has a DC subcarrier, Receive or adjust the reception.
  • the second communication node searches for a time/frequency domain resource mapping situation in a resource block grid (RB Grid) according to the subcarrier spacing indication information.
  • the subcarrier spacing is 30 kHz, compared to the subcarrier spacing.
  • the two subframes in the 15KHz time domain are one scheduling unit, and the two RBs in the frequency domain are one scheduling unit compared to the subcarrier spacing of 60KHz.
  • the resource allocation indication information sent by the first communication node indicates that the resource allocation is performed on the scheduling unit in the time/frequency domain, for example, two consecutive RBs are allocated in the frequency domain.
  • Example 2 This example provides a method for indicating a DC subcarrier, as shown in FIG. 12, the flow of which includes the following steps:
  • Step 1201 The first communications node sends physical carrier indication information, virtual carrier indication information, received bandwidth indication information, subcarrier spacing indication information, and resource allocation indication information to the second communication node.
  • the virtual carrier indication information includes at least one of the following: the number of virtual carriers, the virtual carrier identification information, and the bandwidth of the virtual carrier.
  • the virtual carrier indication information includes at least the number of virtual carriers. As shown in FIG. 3, the number of virtual carriers is 1. As shown in FIG. 4, the number of virtual carriers is 2. As shown in FIG. 5, the number of virtual carriers is 4. The number of virtual carriers shown in 16 is 2.
  • the virtual carrier refers to a subset of the physical carriers.
  • the virtual carrier may be equivalent to the physical carrier, as shown in FIG. 3, or a part of the physical carrier, as shown in FIG. 4, FIG. 5, and FIG.
  • the number of virtual carriers and the bandwidth of the virtual carrier are related to at least the bandwidth of the physical carrier, the subcarrier spacing, and the number of FFT points.
  • the physical carrier bandwidth is 80 MHz
  • the subcarrier is 60 KHz
  • the FFT point is 2048
  • the number of virtual carriers is 1, and the bandwidth of each virtual carrier is 80 MHz
  • the DC subcarrier is located at the center of each virtual carrier bandwidth
  • the physical carrier bandwidth is 80 MHz
  • the subcarrier is 30 KHz
  • the FFT point is 2048
  • the virtual carrier number is 2
  • the physical carrier bandwidth is 80 MHz
  • the subcarrier is 15 KHz
  • the FFT point is 4096
  • the number of virtual carriers is 2.
  • Each virtual carrier has a bandwidth of 40 MHz
  • the DC subcarrier is located at the center of each virtual carrier bandwidth; as shown in FIG.
  • the physical carrier bandwidth is 80MHz, the subcarrier is 15KHz, the FFT point is 2048, the virtual carrier number is 4, and the bandwidth of each virtual carrier is 20MHz.
  • the physical carrier bandwidth is 30MHz, the subcarrier is 15KHz, and the virtual carrier is The number is 2, the number of FFT points of virtual carrier 1 is 2048, the bandwidth is 20 MHz, the number of FFT points of virtual carrier 1 is 1024, the bandwidth is 10 MHz, and the DC subcarrier is located at the center of each virtual carrier bandwidth.
  • the physical carrier refers to a certain segment or multiple pieces of spectrum resources.
  • the physical carrier indication information includes at least one of the following: a bandwidth of a physical carrier, a quantity of a physical carrier, physical carrier identification information, and a spectrum resource occupied by a physical carrier.
  • the physical carrier indication information includes at least a bandwidth of a physical carrier and a spectrum resource occupied by a physical carrier. As shown in FIG. 3, the bandwidth of the physical carrier is 80 MHz, and the frequency band occupied by the material carrier is 70000 MHz to 70080 MHz.
  • the receiving bandwidth indication information includes at least one of the following: a size of a receiving bandwidth, and location information of a receiving bandwidth.
  • the receiving bandwidth indication information refers to the size of the receiving bandwidth and the location information of the receiving bandwidth.
  • the receiving bandwidth of the second communications node occupies part of the resources of the physical carrier, corresponding to the virtual carrier 2 and the virtual carrier 3. For some resources, there are two DC subcarriers in the receiving bandwidth of the second communication node.
  • the location information of the receiving bandwidth includes at least one of the following: a bandwidth of the receiving bandwidth in the physical carrier, and a positional relationship of the virtual carrier in the bandwidth.
  • the location information of the receiving bandwidth may be a starting location information and a continuous frequency domain resource information.
  • the starting location is a certain RB Grid starting position of the physical carrier, and the frequency domain resource information is 20MHz or 25 RB Grid.
  • the receiving bandwidth refers to a bandwidth allocated when the second communication node receives data.
  • the receiving bandwidth depends on the capability of the second communication node.
  • the subcarrier spacing indication information refers to a subcarrier spacing used when the second communication node receives data.
  • the subcarrier spacing includes a plurality of, for example, 3.75KHz, 7.5KHz, 15KHz, 30KHz, 60KHz, 120KHz, 480KHz, 960KHz, a total of 8 possible subcarrier intervals, through 3bits signaling notification, for example, the indication 010 corresponding subcarrier spacing is 15KHz.
  • the resource allocation indication information refers to a time/frequency domain resource occupied by actual data transmission.
  • the physical carrier indication information, the virtual carrier indication information, the received bandwidth indication information, the subcarrier spacing indication information, and the resource allocation indication information are carried in at least one of a broadcast message, a system message, and a downlink control message. Send in the message.
  • the physical carrier indication information bearer is sent in a broadcast message, and the received bandwidth indication information and the subcarrier spacing indication information are carried in the system message for transmission; the resource allocation indication message is carried in the downlink control message for transmission.
  • the first communication node is a base station, and refers to one or more of Macro, Micro, Pico, Femto, RRH, Relay, TRP, and GNB; and the second communication node is in the UE and the Relay. One or more.
  • the first type of communication node is Macro and the second type of communication node is UE.
  • Step 1202 The second communication node receives the physical carrier indication information, the virtual carrier indication information, the received bandwidth indication information, the subcarrier spacing indication information, and the resource allocation indication information, determines the location of the DC subcarrier based on the foregoing information, and determines the actual data transmission. Whether there is a DC subcarrier, and different methods are selected for data reception according to different situations.
  • the different conditions refer to whether there are DC subcarriers or no DC subcarriers in the actual data transmission.
  • the different method refers to that when the actual data transmission does not have a DC subcarrier, the second communication node receives all subcarriers in the bandwidth; when the actual data transmission has a DC subcarrier, the method does not perform Receive, or make adjustments to receive.
  • the second communication node searches for the time/frequency domain resource mapping situation in the RB Grid according to the subcarrier spacing indication information.
  • the subcarrier spacing is 15 kHz, compared to the subcarrier spacing.
  • One subframe in the 15KHz time domain is one scheduling unit, and four RBs in the frequency domain are one scheduling unit compared to the subcarrier spacing of 60KHz.
  • the resource allocation indication information sent by the first communication node indicates that the resource allocation is performed on the scheduling unit in the time/frequency domain, for example, four consecutive RBs are allocated in the frequency domain.
  • FIG. 13 is a first schematic structural diagram of an apparatus for indicating a DC subcarrier according to an embodiment of the present invention, which is applied to a first communication node, as shown in FIG.
  • the sending unit 1301 is configured to send one or more sets of virtual carrier information to the second communications node, where the virtual carrier information includes at least one of the following:
  • the number of virtual carriers, the bandwidth of the virtual carrier, the virtual carrier index information, the subcarrier spacing used by the virtual carrier, and the number of fast Fourier transform FFT points used by the virtual carrier are the number of virtual carriers, the bandwidth of the virtual carrier, the virtual carrier index information, the subcarrier spacing used by the virtual carrier, and the number of fast Fourier transform FFT points used by the virtual carrier.
  • the sending unit 1301 is further configured to send, to the second communications node, at least one of the following: subcarrier spacing indication information, group identification information of virtual carrier information;
  • the group virtual carrier information has a binding relationship.
  • the sending unit 1301 is further configured to send the intra-group resource allocation range information of the set of virtual carrier information in the binding relationship to the second communication node, where the intra-group resource allocation range information A size and a location are included, wherein the location refers to a relative location relationship between the resource allocation range and each virtual carrier within the group; the resource allocation range is distributed over one or more of the virtual carriers.
  • the sending unit 1301 is further configured to send dynamic resource allocation indication information to the second communication node, where the dynamic resource allocation indication information refers to a time/frequency domain resource occupied by the actual data transmission.
  • the sending unit 1301 is further configured to send the physical carrier indication information to the second communications node, where the physical carrier indication information refers to at least one of the following: a bandwidth of the physical carrier, a quantity of the physical carrier, and a physical carrier identifier. Information, spectrum resources occupied by physical carriers.
  • the first communication node indicates, according to information sent to the second communication node, whether the current resource allocation of the second communication node includes DC subcarriers of one or more virtual carriers.
  • the first communication node performs rate matching, and accordingly, the DC subcarrier of the virtual carrier does not map data.
  • the virtual carrier index information has a corresponding relationship with the location of the physical carrier.
  • the number of the virtual carriers and the bandwidth of the virtual carrier are related to at least the bandwidth of the physical carrier, the subcarrier spacing of the virtual carrier, and the number of FFT points.
  • the resource allocation range information is determined based on the capability reported by the second communication node, and the capability includes a supported FFT point, or a supported bandwidth, or a supported FFT point and a supported bandwidth.
  • the subcarrier spacings used by the virtual carriers in the multiple sets of virtual carrier information have a 2 n multiple relationship with each other, where n is an integer.
  • the subcarrier spacing indication information refers to a subcarrier spacing used when the second communication node receives data.
  • the one or more sets of virtual carrier information, subcarrier spacing indication information, group identification information of virtual carrier information, resource allocation range information, dynamic resource allocation indication information, and physical carrier indication information are carried in the following
  • the at least one message is sent: a broadcast message, a system message, and a downlink control message.
  • each unit in the apparatus for indicating a DC subcarrier shown in FIG. 13 can be understood by referring to the related description of the foregoing method for indicating a DC subcarrier.
  • the function of each unit in the apparatus for indicating a DC subcarrier shown in FIG. 13 can be realized by a program running on a processor, or can be realized by a logic circuit.
  • FIG. 14 is a schematic structural diagram of a device for indicating a DC subcarrier according to an embodiment of the present invention. The method is applied to a second communication node. As shown in FIG. 14, the device includes:
  • the receiving unit 1401 is configured to receive at least one of the following: the first communication node sends: Or multiple sets of virtual carrier information, subcarrier spacing indication information, group identification information of virtual carrier information, resource allocation range information, dynamic resource allocation indication information, physical carrier indication information; the received message determines the location of the DC subcarrier, and simultaneously determines Whether there is a DC subcarrier in the actual data transmission, and different methods are selected according to the judgment result for data reception.
  • the virtual carrier information includes at least one of the following:
  • the number of virtual carriers, the bandwidth of the virtual carrier, the virtual carrier index information, the subcarrier spacing used by the virtual carrier, and the number of FFT points used by the virtual carrier are the number of virtual carriers, the bandwidth of the virtual carrier, the virtual carrier index information, the subcarrier spacing used by the virtual carrier, and the number of FFT points used by the virtual carrier.
  • the group virtual carrier information has a binding relationship.
  • the resource allocation range information includes a size and a location, where the location refers to a relative location relationship between the resource allocation range and each virtual carrier in the group; the resource allocation range may be distributed in one or more On the virtual carrier.
  • the dynamic resource allocation indication information refers to a time/frequency domain resource occupied by actual data transmission.
  • the physical carrier indication information refers to at least one of the following: a bandwidth of a physical carrier, a number of physical carriers, physical carrier identification information, and a spectrum resource occupied by a physical carrier.
  • the virtual carrier index information has a corresponding relationship with the location of the physical carrier.
  • the number of the virtual carriers and the bandwidth of the virtual carrier are related to at least the bandwidth of the physical carrier, the subcarrier spacing of the virtual carrier, and the number of FFT points.
  • the resource allocation range information is determined based on the capability reported by the second communication node, and the capability includes a supported FFT point, or a supported bandwidth, or a supported FFT point and a supported bandwidth.
  • the subcarrier spacing used by the virtual carrier in the multiple sets of virtual carrier information has a 2 n multiple relationship with each other, where n is an integer.
  • the subcarrier spacing indication information refers to a subcarrier spacing used when the second communication node receives data.
  • the one or more sets of virtual carrier information, subcarrier spacing indication information, group identification information of virtual carrier information, resource allocation range information, dynamic resource allocation indication information, and physical carrier indication information are carried in the following
  • the at least one message is sent: a broadcast message, a system message, and a downlink control message.
  • the judgment result refers to whether there is a DC subcarrier or no DC subcarrier in the actual data transmission.
  • the different method refers to that when the actual data transmission does not have a DC subcarrier, the second communication node receives all subcarriers in the bandwidth; when the actual data transmission has a DC subcarrier, Receive DC subcarriers or adjust reception.
  • the second communication node is configured according to the subcarrier spacing indication information, or the group identification information of the virtual carrier information, or the group identifier information of the subcarrier spacing indication information and the virtual carrier information. Or searching for virtual carrier information in multiple sets of virtual carrier information.
  • each unit in the apparatus for indicating a DC subcarrier shown in FIG. 14 can be understood by referring to the related description of the foregoing method for indicating a DC subcarrier.
  • the function of each unit in the apparatus for indicating a DC subcarrier shown in FIG. 14 can be realized by a program running on a processor, or can be realized by a logic circuit.
  • the electronic device includes a processor 1501 and a memory 1502 storing instructions executable by the processor 1501, when the instruction is processed.
  • the device 1501 executes instructions executable by the processor 1501 to process the instruction.
  • the processor 1501 performs the following steps: transmitting one or more sets of virtual carrier information to the second communication node, where the virtual carrier information includes at least one of the following: the number of virtual carriers, and the virtual Carrier bandwidth, virtual carrier index information, subcarrier spacing used by the virtual carrier, and fast Fourier transform FFT points used by the virtual carrier.
  • the processor 1501 performs the following steps: receiving at least one of the following ones: one or more sets of virtual carrier information, subcarrier spacing indication information, and group identification information of virtual carrier information.
  • the resource allocation range information, the dynamic resource allocation indication information, and the physical carrier indication information; the received message determines the location of the DC subcarrier, and determines whether there is a DC subcarrier in the actual data transmission, and selects different methods according to the judgment result to perform data. receive.
  • Embodiments of the present invention also provide a computer readable storage medium having stored thereon computer executable instructions that, when executed by a processor, implement any of the methods described above.
  • computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules or other data. Sex, removable and non-removable media.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or may Any other medium used to store the desired information and that can be accessed by the computer.
  • communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media. .
  • the first communications node sends one or more sets of virtual carrier information to the second communications node, where the virtual carrier information includes at least one of the following: a virtual carrier The number, the bandwidth of the virtual carrier, the virtual carrier index information, the subcarrier spacing used by the virtual carrier, and the fast Fourier transform FFT points used by the virtual carrier.
  • the second communication node receives at least one of the following ones: one or more sets of virtual carrier information, subcarrier spacing indication information, group identification information of virtual carrier information, resource allocation range information, dynamic resource allocation indication information,
  • the physical carrier indicates information; the second communication node determines the location of the DC subcarrier based on the received message, and determines whether there is a DC subcarrier in the actual data transmission, and selects a different method for data reception according to the judgment result.
  • the solution of the embodiment of the present invention enables the receiving end to know whether there is a DC subcarrier in the receiving bandwidth, thereby obtaining a corresponding data receiving method, ensuring correct data reception, and effectively reducing signaling overhead, and more flexibly adapting to the 5G NR. Different requirements of the scene. Therefore, the present invention has industrial applicability.

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Abstract

公开了一种指示直流DC子载波的方法及装置、电子设备，所述方法包括：第一通信节点向第二通信节点发送一组或多组虚拟载波信息，其中，所述虚拟载波信息至少包括以下之一：虚拟载波的数量、虚拟载波的带宽、虚拟载波索引信息、虚拟载波使用的子载波间隔、虚拟载波采用的快速傅里叶变换FFT点数。

Description

一种指示直流子载波的方法及装置、电子设备 技术领域
本公开涉及长期演进(LTE，Long Term Evolution)以及新空口(NR，New Radio)移动通信网络领域，尤其涉及NR下或者LTE和NR共存情况下的一种指示直流(DC，Direct Current)子载波的方法及装置、电子设备。
背景技术
在载波中心频点位置上的子载波称为DC子载波，由于本地晶振泄露的影响会对相邻的多个子载波产生高干扰问题，在LTE系统中对于下行链路不适用DC子载波进行下行传输，上行链路由于要上行整个系统带宽的连续分配采用了平移1/2子载波的方法。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供了一种指示直流子载波的方法及装置、电子设备，使得接收端可以获知接收带宽内是否存在DC子载波，从而获得相应的数据接收方法，保证数据的正确接收，同时可以有效降低信令开销，更灵活地适应5G NR场景的不同需求。
本发明实施例提供的指示直流DC子载波的方法，包括：
第一通信节点向第二通信节点发送一组或多组虚拟载波信息，其中，所述虚拟载波信息至少包括以下之一：
虚拟载波的数量、虚拟载波的带宽、虚拟载波索引信息、虚拟载波使用的子载波间隔、虚拟载波采用的快速傅里叶变换FFT点数。
本发明另一实施例提供的指示直流DC子载波的方法，包括：
第二通信节点接收第一通信节点发送的以下至少之一：一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息；
第二通信节点基于接收到的消息确定DC子载波的位置，同时判断实际的数据传输中是否有DC子载波，根据判断结果选择不同的方法进行数据接收。
本发明实施例提供的指示直流DC子载波的装置，应用于第一通信节点，所述装置包括：
发送单元，配置为向第二通信节点发送一组或多组虚拟载波信息，其中，所述虚拟载波信息至少包括以下之一：
虚拟载波的数量、虚拟载波的带宽、虚拟载波索引信息、虚拟载波使用的子载波间隔、虚拟载波采用的快速傅里叶变换FFT点数。
本发明另一实施例提供的DC子载波的装置，应用于第二通信节点，所述装置包括：
接收单元，配置为接收第一通信节点发送的以下至少之一：一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息；接收到的消息确定DC子载波的位置，同时判断实际的数据传输中是否有DC子载波，根据判断结果选择不同的方法进行数据接收。
本发明实施例提供的电子设备，包括处理器以及存储有所述处理器可执行指令的存储器，当所述指令被处理器执行时，所述处理器执行所述的指示DC子载波的方法步骤。
本发明实施例还提供了一种计算机可读存储介质，其上存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现以上描述的任一方法。
本发明实施例的方案中，第一通信节点向第二通信节点发送一组或多组虚拟载波信息，其中，所述虚拟载波信息至少包括以下之一：虚拟载波的数量、虚拟载波的带宽、虚拟载波索引信息、虚拟载波使用的子载波间隔、虚 拟载波采用的快速傅里叶变换FFT点数。第二通信节点接收第一通信节点发送的以下至少之一：一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息；第二通信节点基于接收到的消息确定DC子载波的位置，同时判断实际的数据传输中是否有DC子载波，根据判断结果选择不同的方法进行数据接收。采用本发明实施例的方案，使得接收端可以获知接收带宽内是否存在DC子载波，从而获得相应的数据接收方法，保证数据的正确接收，同时可以有效降低信令开销，更灵活地适应5G NR场景的不同需求面。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图说明
图1为本发明实施例的指示直流子载波的方法的流程示意图一；
图2为本发明实施例的指示直流子载波的方法的流程示意图二；
图3为本发明实施例的一种虚拟载波个数与物理载波带宽、子载波间隔及FFT点数间关系的示意图一；
图4为本发明实施例的一种虚拟载波个数与物理载波带宽、子载波间隔及FFT点数间关系的示意图二；
图5为本发明实施例的一种虚拟载波个数与物理载波带宽、子载波间隔及FFT点数间关系的示意图三；
图6为本发明实施例的一种第二通信节点的接收带宽示意图；
图7为本发明实施例的一种第二通信节点的实际资源分配的示意图；
图8为本发明实施例的一种第二通信节点的实际资源分配的示意图；
图9为本发明实施例的信令流程图一；
图10为本发明实施例的资源块网格RB Grid示意图；
图11为本发明实施例的一种第二通信节点的实际资源分配的示意图；
图12为本发明实施例的信令流程图二；
图13为本发明实施例的指示直流子载波的装置的结构组成示意图一；
图14为本发明实施例的指示直流子载波的装置的结构组成示意图二；
图15为本发明实施例的电子设备的结构组成示意图；
图16为本发明实施例的一种虚拟载波个数与物理载波带宽、子载波间隔及FFT点数间关系的示意图四。
具体实施方式
在第三代合作伙伴计划(3GPP，3rd Generation Partnership Project)RAN1#86次会议中，关于在NR的下一步研究工作中认为：接收端要获知接收带宽上是否存在DC子载波，这可以是规定的或者通过信令来通知。其中，如果不存在DC子载波，则接收带宽内的全部子载波均进行传输；如果存在DC子载波，要研究其操作方法。不论发送端对于DC子载波进行如何操作，都要有一种机制使得接收端可以获知接收带宽内是否存在DC子载波，从而获得相应的数据接收方法，保证数据的正确接收，这是目前有待解决的问题，一种简单的方法是通过信令直接告知终端DC子载波的位置，这样会造成巨大的信令开销。
为了能够更加详尽地了解本发明实施例的特点与技术内容，下面结合附图对本发明实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本发明实施例。
图1为本发明实施例的指示直流子载波的方法的流程示意图一，本示例中的指示直流子载波的方法应用于第一通信节点，如图1所示，所述指示直流子载波的方法包括以下步骤：
步骤101：第一通信节点向第二通信节点发送一组或多组虚拟载波信息，其中，所述虚拟载波信息至少包括以下之一：虚拟载波的数量、虚拟载波的带宽、虚拟载波索引信息、虚拟载波使用的子载波间隔、虚拟载波采用的FFT点数。
本发明实施例中，所述方法还包括：
第一通信节点向第二通信节点发送以下至少之一：子载波间隔指示信息、虚拟载波信息的组标识信息；
其中，所述子载波间隔指示信息、或虚拟载波信息的组标识信息、或所述子载波间隔指示信息和虚拟载波信息的组标识信息，与所述一组或多组虚拟载波信息中的一组虚拟载波信息存在绑定关系。
本发明实施例中，所述方法还包括：
第一通信节点向第二通信节点发送所述存在绑定关系的一组虚拟载波信息的组内资源分配范围信息，其中，所述组内资源分配范围信息包括大小和位置，其中所述位置指所述资源分配范围与组内各虚拟载波间的相对位置关系；所述资源分配范围分布在一个或多个所述虚拟载波上。
本发明实施例中，所述方法还包括：
第一通信节点向第二通信节点发送动态资源分配指示信息，所述动态资源分配指示信息指实际数据传输时占用的时/频域资源。
本发明实施例中，所述方法还包括：
第一通信节点向第二通信节点发送物理载波指示信息，其中，物理载波指示信息指以下至少之一：物理载波的带宽、物理载波的数量、物理载波标识信息、物理载波占用的频谱资源。
本发明实施例中，所述第一通信节点基于向第二通信节点发送的信息指示所述第二通信节点当前的资源分配是否包括一个或多个虚拟载波的DC子载波。
本发明实施例中，如果所述第二通信节点当前的资源分配包括虚拟载波的DC子载波，则所述第一通信节点进行速率匹配，相应地，虚拟载波的DC子载波不映射数据。
本发明实施例中，所述虚拟载波索引信息与所述物理载波的位置具有对应关系。
本发明实施例中，所述虚拟载波的数量和虚拟载波的带宽，至少与所述物理载波的带宽、所述虚拟载波的子载波间隔和FFT点数有关。
本发明实施例中，所述资源分配范围信息基于所述第二通信节点上报的能力而确定，所述能力包括支持的FFT点数、或支持的带宽、或支持的FFT点数和支持的带宽。
本发明实施例中，所述多组虚拟载波信息中虚拟载波使用的子载波间隔彼此之间具有2n倍数关系，其中n为整数。
本发明实施例中，子载波间隔指示信息指所述第二通信节点接收数据时使用的子载波间隔。
本发明实施例中，所述一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息，承载在以下至少一种消息中进行发送：广播消息、系统消息、下行控制消息。
图2为本发明实施例的指示直流子载波的方法的流程示意图二，本示例中的指示直流子载波的方法应用于第二通信节点，如图2所示，所述指示直流子载波的方法包括以下步骤：
步骤201：第二通信节点接收第一通信节点发送的以下至少之一：一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息。
步骤202：第二通信节点接收第一通信节点发送的以下至少之一：一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息。
本发明实施例中，所述虚拟载波信息至少包括以下之一：
虚拟载波的数量、虚拟载波的带宽、虚拟载波索引信息、虚拟载波使用的子载波间隔、虚拟载波采用的FFT点数。
本发明实施例中，子载波间隔指示信息、或虚拟载波信息的组标识信息、或子载波间隔指示信息和虚拟载波信息的组标识信息，与所述一组或多组虚拟载波信息中的一组虚拟载波信息存在绑定关系。
本发明实施例中，资源分配范围信息包括大小和位置，其中所述位置指所述资源分配范围与组内各虚拟载波间的相对位置关系；所述资源分配范围可以分布在一个或多个所述虚拟载波上。
本发明实施例中，所述动态资源分配指示信息指实际数据传输时占用的时/频域资源。
本发明实施例中，所述物理载波指示信息指以下至少之一：物理载波的带宽、物理载波的数量、物理载波标识信息、物理载波占用的频谱资源。
本发明实施例中，所述虚拟载波索引信息与所述物理载波的位置具有对应关系。
本发明实施例中，所述虚拟载波的数量和虚拟载波的带宽，至少与所述物理载波的带宽、所述虚拟载波的子载波间隔和FFT点数有关。
本发明实施例中，所述资源分配范围信息基于所述第二通信节点上报的能力而确定，所述能力包括支持的FFT点数、或支持的带宽、或支持的FFT点数和支持的带宽。
本发明实施例中，所述多组虚拟载波信息中虚拟载波使用的子载波间隔彼此之间具有2n倍数关系，其中n为整数。
本发明实施例中，子载波间隔指示信息指所述第二通信节点接收数据时使用的子载波间隔。
本发明实施例中，所述一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息，承载在以下至少一种消息中进行发送：广播消息、系统消息、下行控制消息。
本发明实施例中，所述判断结果指实际数据传输中有DC子载波或没有DC子载波。
本发明实施例中，所述不同的方法指所述实际数据传输中没有DC子载波时，所述第二通信节点接收带宽上全部子载波；所述实际数据传输中有DC子载波时，不接收DC子载波，或进行调整接收，例如偏移半个子载波接收。
本发明实施例中，所述第二通信节点根据所述子载波间隔指示信息、或虚拟载波信息的组标识信息、或所述子载波间隔指示信息和虚拟载波信息的组标识信息，在一组或多组虚拟载波信息中查找虚拟载波信息。
下面结合应用场景对本发明实施例的指示直流子载波的方法做详细描述。
示例1：本示例提供一种指示直流子载波的方法，如图9所示，其流程包括以下步骤：
步骤901：第一通信节点发送物理载波指示信息、虚拟载波指示信息、接收带宽指示信息、子载波间隔指示信息和资源分配指示信息至第二通信节点。
本发明实施例中，所述虚拟载波指示信息包括以下至少之一：虚拟载波的数量、虚拟载波标识信息、虚拟载波的带宽、虚拟载波使用的子载波间隔、虚拟载波采用的快速傅里叶变换FFT点数。
例如虚拟载波指示信息至少包括虚拟载波的数量，如图3所示虚拟载波的数量为1，如图4所示虚拟载波的数量为2，如图5所示虚拟载波的数量为4，图16所示虚拟载波的数量为2。
本发明实施例中，所述虚拟载波指所述物理载波的子集。
例如，所述虚拟载波可以等同于所述物理载波，如图3所示，或者为所述物理载波的一部分，如图4、图5、图16所示。
本发明实施例中，虚拟载波的个数和虚拟载波的带宽至少与所述物理载波的带宽、所述子载波间隔和FFT点数有关。
例如，如图3所示，物理载波带宽为80MHz，子载波60KHz，FFT点数为2048，虚拟载波个数为1，每个虚拟载波带宽为80MHz，DC子载波位于每个虚拟载波带宽的中心；如图4所示，物理载波带宽为80MHz，子载波30KHz，FFT点数为2048，虚拟载波个数为2，或者，物理载波带宽为80MHz，子载波15KHz，FFT点数为4096，虚拟载波个数为2，每个虚拟载波带宽为40MHz，DC子载波位于每个虚拟载波带宽的中心；如图5所示，物理载波带宽为80MHz，子载波15KHz，FFT点数为2048，虚拟载波个数为4，每个虚拟载波带宽为20MHz；如图16所示，物理载波带宽为30MHz，子载波15KHz，虚拟载波个数为2，虚拟载波1的FFT点数为2048，带宽20MHz，虚拟载波1的FFT点数为1024，带宽10MHz，DC子载波位于每个虚拟载波带宽的中心。
本发明实施例中，所述物理载波是指某一段或者多段频谱资源。
本发明实施例中，所述物理载波指示信息包括以下至少之一：物理载波的带宽、物理载波的数量、物理载波标识信息、物理载波占用的频谱资源。
例如，所述物理载波指示信息至少包括物理载波的带宽和物理载波占用的频谱资源，如图3所示，物理载波的带宽为80MHz，物料载波占用的频段为30000MHz到30080MHz。
本发明实施例中，所述接收带宽指示信息包括以下至少之一：接收带宽的大小、接收带宽的位置信息。
例如，所述接收带宽指示信息指接收带宽的大小和接收带宽的位置信息，如图6所示，第二通信节点1的接收带宽占用物理载波的部分资源，对应虚拟载波1中的部分资源，其中所述第二通信节点1的接收带宽中存在DC子载波，第二通信节点2的接收带宽占用物理载波的部分资源，对应虚拟载波2中的部分资源，其中所述第二通信节点2的接收带宽中不存在DC子载波。
本发明实施例中，所述接收带宽的位置信息包括以下至少之一：接收带宽在所述物理载波的带宽、虚拟载波在带宽中的位置关系。
例如，接收带宽的位置信息可以为一个起始的位置信息和一个连续的频域资源信息，如图6所示，起始位置为物理载波的第三个物理资源块PRB，频域资源信息为10MHz或者25个PRB。
本发明实施例中，所述接收带宽指分配给所述第二通信节点接收数据时使用的带宽。
本发明实施例中，所述接收带宽取决于所述第二通信节点的能力。
本发明实施例中，所述子载波间隔指示信息指所述第二通信节点接收数据时使用的子载波间隔。
例如，子载波间隔包括多种，例如3.75KHz、7.5KHz、15KHz、30KHz、60KHz、120KHz、480KHz、960KHz，一共8种可能的子载波间隔，通过3bits信令通知，例如指示011对应子载波间隔为30KHz。
本发明实施例中，所述资源分配指示信息指实际数据传输时占用的时/频域资源。
例如，如图7所示，第二通信节点1实际数据传输时占用的时/频域资源中存在DC子载波；无论第二通信节点2资源分配指示信息如何分配都不存在DC子载波；如图8所示，第二通信节点1实际数据传输时占用的时/频域资源中不存在DC子载波；无论第二通信节点2资源分配指示信息如何分配都不存在DC子载波。
本发明实施例中，所述物理载波指示信息、虚拟载波指示信息、接收带宽指示信息、子载波间隔指示信息和资源分配指示信息承载在广播消息、或系统消息、或下行控制消息中进行发送。
例如，所述物理载波指示信息、接收带宽指示信息、子载波间隔指示信息承载在系统消息中进行发送；资源分配指示消息承载在下行控制消息中进行发送。
本发明实施例中，所述第一通信节点为基站，指Macro、Micro、Pico，Femto，Remote Radio head(RRH)，Relay、Tx/Rx Point(TRP)、GNB(next generation Node B)中的一种或多种；所述第二通信节点为用户设备UE、Relay中的一种或多种。
例如，第一类通信节点为Macro，第二类通信节点为UE。
步骤902：第二通信节点接收物理载波指示信息、虚拟载波指示信息、接收带宽指示信息、子载波间隔指示信息和资源分配指示信息，基于上述指示信息确定DC子载波的位置，并判断实际数据传输中是否存在DC子载波，根据不同的情况选择不同的方法进行数据接收。
本发明实施例中，所述不同的情况指实际数据传输中有DC子载波或没有DC子载波。
本发明实施例中，所述不同的方法指所述实际数据传输中没有DC子载波时，所述第二通信节点接收带宽上全部子载波；所述实际数据传输中有DC子载波时，不进行接收或进行调整接收。
本发明实施例中，所述第二通信节点根据所述子载波间隔指示信息在资源块网格(RB Grid)中查找时/频域资源映射情况。
例如，如图10所示，对于子载波间隔为30KHz，相比于子载波间隔 15KHz时域上2个子帧为1个调度单位，相比于子载波间隔60KHz频域上2个RB为1个调度单位。
本发明实施例中，所述资源实际数据传输时占用的时/频域资源与所述时/频域资源映射情况存在对应关系。
例如，所述第一通信节点发送的资源分配指示信息指示的是对上述时/频域的调度单位进行资源分配，例如频域上是连续2个RB进行分配。
示例2：本示例提供一种指示直流子载波的方法，如图12所示，其流程包括以下步骤：
步骤1201：第一通信节点发送物理载波指示信息、虚拟载波指示信息、接收带宽指示信息、子载波间隔指示信息和资源分配指示信息至第二通信节点。
本发明实施例中，所述虚拟载波指示信息包括以下至少之一：虚拟载波的数量、虚拟载波标识信息、虚拟载波的带宽。
例如虚拟载波指示信息至少包括虚拟载波的数量，如图3所示虚拟载波的数量为1，如图4所示虚拟载波的数量为2，如图5所示虚拟载波的数量为4，如图16所示虚拟载波的数量为2。
本发明实施例中，所述虚拟载波指所述物理载波的子集。
例如，所述虚拟载波可以等同于所述物理载波，如图3所示，或者为所述物理载波的一部分，如图4、图5、图16所示。
本发明实施例中，虚拟载波的个数和虚拟载波的带宽至少与所述物理载波的带宽、所述子载波间隔和FFT点数有关。
例如，如图3所示，物理载波带宽为80MHz，子载波60KHz，FFT点数为2048，虚拟载波个数为1，每个虚拟载波带宽为80MHz，DC子载波位于每个虚拟载波带宽的中心；如图4所示，物理载波带宽为80MHz，子载波30KHz，FFT点数为2048，虚拟载波个数为2，或者，物理载波带宽为80MHz，子载波15KHz，FFT点数为4096，虚拟载波个数为2，每个虚拟载波带宽为40MHz，DC子载波位于每个虚拟载波带宽的中心；如图5所示， 物理载波带宽为80MHz，子载波15KHz，FFT点数为2048，虚拟载波个数为4，每个虚拟载波带宽为20MHz，；如图16所示，物理载波带宽为30MHz，子载波15KHz，虚拟载波个数为2，虚拟载波1的FFT点数为2048，带宽20MHz，虚拟载波1的FFT点数为1024，带宽10MHz，DC子载波位于每个虚拟载波带宽的中心。
本发明实施例中，所述物理载波是指某一段或者多段频谱资源。
本发明实施例中，所述物理载波指示信息包括以下至少之一：物理载波的带宽、物理载波的数量、物理载波标识信息、物理载波占用的频谱资源。
例如，所述物理载波指示信息至少包括物理载波的带宽和物理载波占用的频谱资源，如图3所示，物理载波的带宽为80MHz，物料载波占用的频段为70000MHz到70080MHz。
本发明实施例中，所述接收带宽指示信息包括以下至少之一：接收带宽的大小、接收带宽的位置信息。
例如，所述接收带宽指示信息指接收带宽的大小和接收带宽的位置信息，如图11所示，第二通信节点的接收带宽占用物理载波的部分资源，对应虚拟载波2和虚拟载波3中的部分资源，所述第二通信节点的接收带宽中存在2个DC子载波。
本发明实施例中，所述接收带宽的位置信息包括以下至少之一：接收带宽在所述物理载波的带宽、虚拟载波在带宽中的位置关系。
例如，接收带宽的位置信息可以为一个起始的位置信息和一个连续的频域资源信息，如图11所示，起始位置为物理载波的某个RB Grid起始位置，频域资源信息为20MHz或者25个RB Grid。
本发明实施例中，所述接收带宽指分配给所述第二通信节点接收数据时使用的带宽。
本发明实施例中，所述接收带宽取决于所述第二通信节点的能力。
本发明实施例中，所述子载波间隔指示信息指所述第二通信节点接收数据时使用的子载波间隔。
例如，子载波间隔包括多种，例如3.75KHz、7.5KHz、15KHz、30KHz、 60KHz、120KHz、480KHz、960KHz，一共8种可能的子载波间隔，通过3bits信令通知，例如指示010对应子载波间隔为15KHz。
本发明实施例中，所述资源分配指示信息指实际数据传输时占用的时/频域资源。
例如，如图11所示，第二通信节点实际数据传输时占用的时/频域资源中存在2个DC子载波。
本发明实施例中，所述物理载波指示信息、虚拟载波指示信息、接收带宽指示信息、子载波间隔指示信息和资源分配指示信息，承载在广播消息、系统消息和下行控制消息中的至少一种消息中进行发送。
例如，所述物理载波指示信息承载在广播消息中发送，接收带宽指示信息、子载波间隔指示信息承载在系统消息中进行发送；资源分配指示消息承载在下行控制消息中进行发送。
本发明实施例中，所述第一通信节点为基站，指Macro、Micro、Pico，Femto，RRH，Relay、TRP、GNB中的一种或多种；所述第二通信节点为UE、Relay中的一种或多种。
例如，第一类通信节点为Macro，第二类通信节点为UE。
步骤1202：第二通信节点接收物理载波指示信息、虚拟载波指示信息、接收带宽指示信息、子载波间隔指示信息和资源分配指示信息，基于上述信息确定DC子载波的位置，并判断实际数据传输中是否存在DC子载波，根据不同的情况选择不同的方法进行数据接收。
本发明实施例中，所述不同的情况指实际数据传输中有DC子载波或没有DC子载波。
本发明实施例中，所述不同的方法指所述实际数据传输中没有DC子载波时，所述第二通信节点接收带宽上全部子载波；所述实际数据传输中有DC子载波时不进行接收，或进行调整接收。
本发明实施例中，所述第二通信节点根据所述子载波间隔指示信息在RB Grid中查找时/频域资源映射情况。
例如，如图10所示，对于子载波间隔为15KHz，相比于子载波间隔 15KHz时域上1个子帧为1个调度单位，相比于子载波间隔60KHz频域上4个RB为1个调度单位。
本发明实施例中，所述资源实际数据传输时占用的时/频域资源与所述时/频域资源映射情况存在对应关系。
例如，所述第一通信节点发送的资源分配指示信息指示的是对上述时/频域的调度单位进行资源分配，例如频域上是连续4个RB进行分配。
图13为本发明实施例的指示直流子载波的装置的结构组成示意图一，应用于第一通信节点，如图13所示，所述装置包括：
发送单元1301，配置为向第二通信节点发送一组或多组虚拟载波信息，其中，所述虚拟载波信息至少包括以下之一：
虚拟载波的数量、虚拟载波的带宽、虚拟载波索引信息、虚拟载波使用的子载波间隔、虚拟载波采用的快速傅里叶变换FFT点数。
本发明实施例中，所述发送单元1301还配置为向第二通信节点发送以下至少之一：子载波间隔指示信息、虚拟载波信息的组标识信息；
其中，所述子载波间隔指示信息、或虚拟载波信息的组标识信息、或所述子载波间隔指示信息和虚拟载波信息的组标识信息，与所述一组或多组虚拟载波信息中的一组虚拟载波信息存在绑定关系。
本发明实施例中，所述发送单元1301还配置为向第二通信节点发送所述存在绑定关系的一组虚拟载波信息的组内资源分配范围信息，其中，所述组内资源分配范围信息包括大小和位置，其中所述位置指所述资源分配范围与组内各虚拟载波间的相对位置关系；所述资源分配范围分布在一个或多个所述虚拟载波上。
本发明实施例中，所述发送单元1301还配置为向第二通信节点发送动态资源分配指示信息，所述动态资源分配指示信息指实际数据传输时占用的时/频域资源。
本发明实施例中，所述发送单元1301还配置为向第二通信节点发送物理载波指示信息，其中，物理载波指示信息指以下至少之一：物理载波的带宽、物理载波的数量、物理载波标识信息、物理载波占用的频谱资源。
本发明实施例中，所述第一通信节点基于向第二通信节点发送的信息指示所述第二通信节点当前的资源分配是否包括一个或多个虚拟载波的DC子载波。
本发明实施例中，如果所述第二通信节点当前的资源分配包括虚拟载波的DC子载波，则所述第一通信节点进行速率匹配，相应地，虚拟载波的DC子载波不映射数据。
本发明实施例中，所述虚拟载波索引信息与所述物理载波的位置具有对应关系。
本发明实施例中，所述虚拟载波的数量和虚拟载波的带宽，至少与所述物理载波的带宽、所述虚拟载波的子载波间隔和FFT点数有关。
本发明实施例中，所述资源分配范围信息基于所述第二通信节点上报的能力而确定，所述能力包括支持的FFT点数、或支持的带宽、或支持的FFT点数和支持的带宽。
本发明实施例中，所述多组虚拟载波信息中虚拟载波使用的子载波间隔彼此之间具有2n倍数关系，其中n为整数。
本发明实施例中，子载波间隔指示信息指所述第二通信节点接收数据时使用的子载波间隔。
本发明实施例中，所述一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息，承载在以下至少一种消息中进行发送：广播消息、系统消息、下行控制消息。
本领域技术人员应当理解，图13所示的指示直流子载波的装置中的各单元的实现功能可参照前述指示直流子载波的方法的相关描述而理解。图13所示的指示直流子载波的装置中的各单元的功能可通过运行于处理器上的程序而实现，也可通过逻辑电路而实现。
图14为本发明实施例的指示直流子载波的装置的结构组成示意图二，应用于第二通信节点，如图14所示，所述装置包括：
接收单元1401，配置为接收第一通信节点发送的以下至少之一：一组 或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息；接收到的消息确定DC子载波的位置，同时判断实际的数据传输中是否有DC子载波，根据判断结果选择不同的方法进行数据接收。
本发明实施例中，所述虚拟载波信息至少包括以下之一：
虚拟载波的数量、虚拟载波的带宽、虚拟载波索引信息、虚拟载波使用的子载波间隔、虚拟载波采用的FFT点数。
本发明实施例中，子载波间隔指示信息、或虚拟载波信息的组标识信息、或子载波间隔指示信息和虚拟载波信息的组标识信息，与所述一组或多组虚拟载波信息中的一组虚拟载波信息存在绑定关系。
本发明实施例中，资源分配范围信息包括大小和位置，其中所述位置指所述资源分配范围与组内各虚拟载波间的相对位置关系；所述资源分配范围可以分布在一个或多个所述虚拟载波上。
本发明实施例中，所述动态资源分配指示信息指实际数据传输时占用的时/频域资源。
本发明实施例中，所述物理载波指示信息指以下至少之一：物理载波的带宽、物理载波的数量、物理载波标识信息、物理载波占用的频谱资源。
本发明实施例中，所述虚拟载波索引信息与所述物理载波的位置具有对应关系。
本发明实施例中，所述虚拟载波的数量和虚拟载波的带宽，至少与所述物理载波的带宽、所述虚拟载波的子载波间隔和FFT点数有关。
本发明实施例中，所述资源分配范围信息基于所述第二通信节点上报的能力而确定，所述能力包括支持的FFT点数、或支持的带宽、或支持的FFT点数和支持的带宽。
本发明实施例中，，所述多组虚拟载波信息中虚拟载波使用的子载波间隔彼此之间具有2n倍数关系，其中n为整数。
本发明实施例中，子载波间隔指示信息指所述第二通信节点接收数据时使用的子载波间隔。
本发明实施例中，所述一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息，承载在以下至少一种消息中进行发送：广播消息、系统消息、下行控制消息。
本发明实施例中，所述判断结果指实际数据传输中有DC子载波或没有DC子载波。
本发明实施例中，所述不同的方法指所述实际数据传输中没有DC子载波时，所述第二通信节点接收带宽上全部子载波；所述实际数据传输中有DC子载波时，不接收DC子载波，或进行调整接收。
本发明实施例中，所述第二通信节点根据所述子载波间隔指示信息、或虚拟载波信息的组标识信息、或所述子载波间隔指示信息和虚拟载波信息的组标识信息，在一组或多组虚拟载波信息中查找虚拟载波信息。
本领域技术人员应当理解，图14所示的指示直流子载波的装置中的各单元的实现功能可参照前述指示直流子载波的方法的相关描述而理解。图14所示的指示直流子载波的装置中的各单元的功能可通过运行于处理器上的程序而实现，也可通过逻辑电路而实现。
图15为本发明实施例的电子设备的结构组成示意图，如图15所示，所述电子设备包括处理器1501以及存储有所述处理器1501可执行指令的存储器1502，当所述指令被处理器1501执行时，
在第一实施方式中，所述处理器1501执行如下步骤：向第二通信节点发送一组或多组虚拟载波信息，其中，所述虚拟载波信息至少包括以下之一：虚拟载波的数量、虚拟载波的带宽、虚拟载波索引信息、虚拟载波使用的子载波间隔、虚拟载波采用的快速傅里叶变换FFT点数。
在第二实施方式中，所述处理器1501执行如下步骤：接收第一通信节点发送的以下至少之一：一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息；接收到的消息确定DC子载波的位置，同时判断实际的数据传输中是否有DC子载波，根据判断结果选择不同的方法进行数据接收。
本领域技术人员应当理解，图15所示的电子设备能够执行本发明任意实施例中的指示直流子载波的方法步骤。
本发明实施例还提供了一种计算机可读存储介质，其上存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现以上描述的任一方法。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些组件或所有组件可以被实施为由处理器，如数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。
以上所述，仅为本公开的示例性实施例而已，并非用于限定本公开的保护范围。
工业实用性
在本发明实施例的方案中，第一通信节点向第二通信节点发送一组或多组虚拟载波信息，其中，所述虚拟载波信息至少包括以下之一：虚拟载波的 数量、虚拟载波的带宽、虚拟载波索引信息、虚拟载波使用的子载波间隔、虚拟载波采用的快速傅里叶变换FFT点数。第二通信节点接收第一通信节点发送的以下至少之一：一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息；第二通信节点基于接收到的消息确定DC子载波的位置，同时判断实际的数据传输中是否有DC子载波，根据判断结果选择不同的方法进行数据接收。采用本发明实施例的方案，使得接收端可以获知接收带宽内是否存在DC子载波，从而获得相应的数据接收方法，保证数据的正确接收，同时可以有效降低信令开销，更灵活地适应5G NR场景的不同需求面。因此本发明具有工业实用性。

Claims (32)

  1. 一种指示直流DC子载波的方法，包括：
    第一通信节点向第二通信节点发送一组或多组虚拟载波信息，其中，所述虚拟载波信息至少包括以下之一：虚拟载波的数量、虚拟载波的带宽、虚拟载波索引信息、虚拟载波使用的子载波间隔、虚拟载波采用的快速傅里叶变换FFT点数(101)。
  2. 根据权利要求1所述的方法，其中，所述方法还包括：
    第一通信节点向第二通信节点发送以下至少之一：子载波间隔指示信息、虚拟载波信息的组标识信息；
    其中，所述子载波间隔指示信息、或所述虚拟载波信息的组标识信息、或所述子载波间隔指示信息和所述虚拟载波信息的组标识信息，与所述一组或多组虚拟载波信息中的一组虚拟载波信息存在绑定关系。
  3. 根据权利要求2所述的方法，其中，所述方法还包括：
    第一通信节点向第二通信节点发送所述存在绑定关系的一组虚拟载波信息的组内资源分配范围信息，其中，所述组内资源分配范围信息包括大小和位置，其中所述位置指所述资源分配范围与组内虚拟载波间的相对位置关系；所述资源分配范围分布在一个或多个所述虚拟载波上。
  4. 根据权利要求1所述的方法，其中，所述方法还包括：
    第一通信节点向第二通信节点发送动态资源分配指示信息，所述动态资源分配指示信息指实际数据传输时占用的时/频域资源。
  5. 根据权利要求1所述的方法，其中，所述方法还包括：
    第一通信节点向第二通信节点发送物理载波指示信息，其中，物理载波指示信息指以下至少之一：物理载波的带宽、物理载波的数量、物理载波标识信息、物理载波占用的频谱资源。
  6. 根据权利要求1-5任一项所述的方法，其中，所述第一通信节点基于向第二通信节点发送的信息指示所述第二通信节点当前的资源分配是否包括一个或多个虚拟载波的DC子载波。
  7. 根据权利要求6所述的方法，其中，如果所述第二通信节点当前的资源分配包括虚拟载波的DC子载波，则所述第一通信节点进行速率匹配，相应地，虚拟载波的DC子载波不映射数据。
  8. 根据权利要求5所述的方法，其中，所述虚拟载波索引信息与所述物理载波的位置具有对应关系。
  9. 根据权利要求5或7所述的方法，其中，所述虚拟载波的数量和虚拟载波的带宽，至少与所述物理载波的带宽、所述虚拟载波的子载波间隔和FFT点数有关。
  10. 根据权利要求2所述的方法，其中，所述资源分配范围信息基于所述第二通信节点上报的能力而确定，所述能力包括支持的FFT点数、或支持的带宽、或支持的FFT点数和支持的带宽。
  11. 根据权利要求1所述的方法，其中，所述多组虚拟载波信息中虚拟载波使用的子载波间隔彼此之间具有2n倍数关系，其中n为整数。
  12. 根据权利要求2所述的方法，其中，子载波间隔指示信息指所述第二通信节点接收数据时使用的子载波间隔。
  13. 根据权利要求5所述的方法，其中，所述一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息，承载在以下至少一种消息中进行发送：广播消息、系统消息、下行控制消息。
  14. 一种指示直流DC子载波的方法，包括：
    第二通信节点接收第一通信节点发送的以下至少之一：一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息(201)；
    第二通信节点基于接收到的消息确定DC子载波的位置，同时判断实际的数据传输中是否有DC子载波，根据判断结果选择不同的方式进行数据接收(202)。
  15. 根据权利要求14所述的方法，其中，所述虚拟载波信息至少包括以下之一：
    虚拟载波的数量、虚拟载波的带宽、虚拟载波索引信息、虚拟载波使用的子载波间隔、虚拟载波采用的FFT点数。
  16. 根据权利要求14所述的方法，其中，子载波间隔指示信息、或虚拟载波信息的组标识信息、或子载波间隔指示信息和虚拟载波信息的组标识信息，与所述一组或多组虚拟载波信息中的一组虚拟载波信息存在绑定关系。
  17. 根据权利要求14所述的方法，其中，资源分配范围信息包括大小和位置，其中所述位置指所述资源分配范围与组内虚拟载波间的相对位置关系；所述资源分配范围分布在一个或多个所述虚拟载波上。
  18. 根据权利要求14所述的方法，其中，所述动态资源分配指示信息指实际数据传输时占用的时/频域资源。
  19. 根据权利要求14所述的方法，其中，所述物理载波指示信息指以下至少之一：物理载波的带宽、物理载波的数量、物理载波标识信息、物理载波占用的频谱资源。
  20. 根据权利要求15或18所述的方法，其中，所述虚拟载波索引信息与所述物理载波的位置具有对应关系。
  21. 根据权利要求14、18或19所述的方法，其中，所述虚拟载波的数量和虚拟载波的带宽，至少与所述物理载波的带宽、所述虚拟载波的子载波间隔和FFT点数有关。
  22. 根据权利要求17所述的方法，其中，所述资源分配范围信息基于所述第二通信节点上报的能力而确定，所述能力包括支持的FFT点数、或支持的带宽、或支持的FFT点数和支持的带宽。
  23. 根据权利要求14或15所述的方法，其中，所述多组虚拟载波信息中虚拟载波使用的子载波间隔彼此之间具有2n倍数关系，其中n为整数。
  24. 根据权利要求17所述的方法，其中，子载波间隔指示信息指所述第二通信节点接收数据时使用的子载波间隔。
  25. 根据权利要求18所述的方法，其中，所述一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、 动态资源分配指示信息、物理载波指示信息，承载在以下至少一种消息中进行发送：广播消息、系统消息、下行控制消息。
  26. 根据权利要求14所述的方法，其中，所述判断结果指实际数据传输中有DC子载波或没有DC子载波。
  27. 根据权利要求14或27所述的方法，其中，所述不同的方式指所述实际数据传输中没有DC子载波时，所述第二通信节点接收带宽上全部子载波；所述实际数据传输中有DC子载波时，不接收DC子载波，或进行调整接收。
  28. 根据权利要求14或16所述的方法，其中，所述第二通信节点根据所述子载波间隔指示信息、或所述虚拟载波信息的组标识信息、或所述子载波间隔指示信息和所述虚拟载波信息的组标识信息，在一组或多组虚拟载波信息中查找虚拟载波信息。
  29. 一种指示直流DC子载波的装置，应用于第一通信节点，所述装置包括：
    发送单元(1301)，配置为向第二通信节点发送一组或多组虚拟载波信息，其中，所述虚拟载波信息包括以下至少之一：
    虚拟载波的数量、虚拟载波的带宽、虚拟载波索引信息、虚拟载波使用的子载波间隔、虚拟载波采用的快速傅里叶变换FFT点数。
  30. 一种指示DC子载波的装置，应用于第二通信节点，所述装置包括：
    接收单元(1401)，配置为接收第一通信节点发送的以下至少之一：一组或多组虚拟载波信息、子载波间隔指示信息、虚拟载波信息的组标识信息、资源分配范围信息、动态资源分配指示信息、物理载波指示信息；接收到的消息确定DC子载波的位置，同时判断实际的数据传输中是否有DC子载波，根据判断结果选择不同的方式进行数据接收。
  31. 一种电子设备，包括处理器(1501)以及存储有所述处理器(1501)可执行指令的存储器(1502)，其中，当所述指令被处理器(1501)执行时，所述处理器(1501)执行权利要求1-13任一项所述的指示DC子载波的方法步骤。
  32. 一种电子设备，包括处理器(1501)以及存储有所述处理器(1501)可执行指令的存储器(1502)，其中，当所述指令被处理器(1501)执行时，所述处理器(1501)执行权利要求14-28任一项所述的指示DC子载波的方法步骤。
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