CN108024265B - Method and device for indicating direct current subcarrier and electronic equipment - Google Patents

Method and device for indicating direct current subcarrier and electronic equipment Download PDF

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Publication number
CN108024265B
CN108024265B CN201610963374.2A CN201610963374A CN108024265B CN 108024265 B CN108024265 B CN 108024265B CN 201610963374 A CN201610963374 A CN 201610963374A CN 108024265 B CN108024265 B CN 108024265B
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information
virtual
carrier
subcarrier
virtual carrier
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CN108024265A (en
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李剑
郝鹏
鲁照华
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2017/107385 priority patent/WO2018082469A1/en
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    • 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
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • 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

Abstract

The invention discloses a method and a device for indicating a Direct Current (DC) subcarrier and electronic equipment, wherein the method comprises the following steps: the first communication node sends one or more groups of virtual carrier information to the second communication node, wherein the virtual carrier information at least comprises one of the following: the number of virtual carriers, the bandwidth of the virtual carriers, virtual carrier index information, subcarrier intervals used by the virtual carriers, and the number of FFT points adopted by the virtual carriers.

Description

Method and device for indicating direct current subcarrier and electronic equipment
Technical Field
The present invention relates to the field of Long Term Evolution (LTE) and New air interface (NR) mobile communication networks, and in particular, to a method and an apparatus for indicating a Direct Current (DC) subcarrier under NR or under coexistence of LTE and NR, and an electronic device.
Background
The subcarriers at the central frequency point of the carrier are called as DC subcarriers, the influence of local crystal oscillator leakage can generate high interference on a plurality of adjacent subcarriers, downlink transmission is carried out on the DC subcarriers which are not suitable for a downlink in an LTE system, and a method of translating 1/2 of the subcarriers is adopted for an uplink due to continuous allocation of the bandwidth of the whole system.
In the third Generation Partnership Project (3 gpp,3rd Generation Partnership Project) RAN1#86 meetings, it was considered in the next research work on NR that: the receiving end needs to further know whether there is a DC subcarrier on the reception bandwidth, which may be specified or signaled. Wherein if no DC subcarrier exists, all subcarriers within the receive bandwidth are transmitted; the specific method of operation requires further investigation if a DC subcarrier is present. No matter how the sending end operates the DC subcarrier, a mechanism is needed to enable the receiving end to know whether the DC subcarrier exists in the receiving bandwidth, so as to obtain a corresponding data receiving method and ensure correct receiving of data, which is a problem to be solved at present.
Disclosure of Invention
In order to solve the above technical problem, embodiments of the present invention provide a method and an apparatus for indicating a DC subcarrier, and an electronic device, so that a receiving end can know whether a DC subcarrier exists in a receiving bandwidth, thereby obtaining a corresponding data receiving method, ensuring correct receiving of data, and simultaneously effectively reducing signaling overhead, and more flexibly adapting to different requirements of a 5G NR scenario.
The method for indicating the direct current DC subcarrier provided by the embodiment of the invention comprises the following steps:
the first communication node sends one or more groups of virtual carrier information to the second communication node, wherein the virtual carrier information at least comprises one of the following:
the number of virtual carriers, the bandwidth of the virtual carriers, virtual carrier index information, subcarrier intervals used by the virtual carriers, and the number of FFT points adopted by the virtual carriers.
Another embodiment of the present invention provides a method for indicating a DC subcarrier, including:
the second communication node receives at least one of the following sent by the first communication node: one or more groups of virtual carrier information, subcarrier interval indication information, group identification information of the virtual carrier information, resource allocation range information, dynamic resource allocation indication information and physical carrier indication information;
and the second communication node determines the position of the DC subcarrier based on the received message, judges whether the DC subcarrier exists in actual data transmission or not, and selects different methods for data reception according to the judgment result.
The device for indicating the direct current DC subcarrier provided by the embodiment of the invention is applied to a first communication node, and comprises the following components:
a sending unit, configured to send one or more sets of virtual carrier information to a second communications node, where the virtual carrier information includes at least one of:
the number of virtual carriers, the bandwidth of the virtual carriers, virtual carrier index information, subcarrier intervals used by the virtual carriers, and the number of FFT points adopted by the virtual carriers.
Another embodiment of the present invention provides an apparatus for DC subcarrier, which is applied to a second communication node, and the apparatus includes:
the receiving unit receives at least one of the following sent by the first communication node: one or more groups of virtual carrier information, subcarrier interval indication information, group identification information of the virtual carrier information, resource allocation range information, dynamic resource allocation indication information and physical carrier indication information; and the received message determines the position of the DC subcarrier, judges whether the DC subcarrier exists in actual data transmission or not at the same time, 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 instructions executable by the processor, and when the instructions are executed by the processor, the processor executes the method steps for indicating the DC subcarrier.
In the technical solution of the embodiment of the present invention, a first communication node sends one or more groups of virtual carrier information to a second communication node, where the virtual carrier information at least includes one of the following: the number of virtual carriers, the bandwidth of the virtual carriers, virtual carrier index information, subcarrier intervals used by the virtual carriers, and the number of FFT points adopted by the virtual carriers. The second communication node receives at least one of the following sent by the first communication node: one or more groups of virtual carrier information, subcarrier interval indication information, group identification information of the virtual carrier information, resource allocation range information, dynamic resource allocation indication information and physical carrier indication information; and the second communication node determines the position of the DC subcarrier based on the received message, judges whether the DC subcarrier exists in actual data transmission or not, and selects different methods for data reception according to the judgment result. By adopting the technical scheme of the embodiment of the invention, the receiving end can know whether the DC subcarrier exists in the receiving bandwidth or not, so that the corresponding data receiving method is obtained, the correct receiving of the data is ensured, meanwhile, the signaling overhead can be effectively reduced, and different requirements of a 5G NR scene can be more flexibly met.
Drawings
Fig. 1 is a first flowchart illustrating a method for indicating dc sub-carriers according to an embodiment of the present invention;
fig. 2 is a second flowchart illustrating a method for indicating dc sub-carriers according to an embodiment of the present invention;
fig. 3 is a first schematic diagram illustrating a relationship between the number of optional virtual carriers and a physical carrier bandwidth, a subcarrier spacing, and the number of FFT points according to an embodiment of the present invention;
fig. 4 is a second schematic diagram illustrating a relationship between the number of optional virtual carriers and 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 third schematic diagram illustrating a relationship between the number of optional virtual carriers and the physical carrier bandwidth, the subcarrier spacing, and the number of FFT points according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a receiving bandwidth of an optional second communication node according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an optional actual resource allocation of the second communication node according to an embodiment of the present invention;
fig. 8 is a schematic diagram of an optional actual resource allocation of a second communication node according to an embodiment of the present invention;
FIG. 9 is a first signaling flow diagram according to an embodiment of the present invention;
FIG. 10 is a schematic view of an RB Grid according to an embodiment of the present invention;
fig. 11 is a schematic diagram of an optional actual resource allocation of a second communication node according to an embodiment of the present invention;
FIG. 12 is a signaling flow chart II according to an embodiment of the present invention;
fig. 13 is a first schematic structural diagram illustrating an apparatus for indicating dc subcarriers according to an embodiment of the present invention;
fig. 14 is a structural diagram of an apparatus for indicating dc sub-carriers 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 invention;
fig. 16 is a fourth schematic diagram illustrating a relationship between the number of optional virtual carriers and the physical carrier bandwidth, the subcarrier spacing, and the number of FFT points according to the embodiment of the present invention.
Detailed Description
So that the manner in which the features and aspects of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings.
Fig. 1 is a flowchart of a method for indicating a dc subcarrier according to an embodiment of the present invention, which is a first flowchart, and the method for indicating a dc subcarrier in this example is applied to a first communication node, as shown in fig. 1, where the method for indicating a dc subcarrier includes the following steps:
step 101: the first communication node sends one or more groups of virtual carrier information to the second communication node, wherein the virtual carrier information at least comprises one of the following: the number of virtual carriers, the bandwidth of the virtual carriers, the virtual carrier index information, the subcarrier intervals used by the virtual carriers, and the number of FFT points used by the virtual carriers.
In the embodiment of the present invention, the method further includes:
the first communication node sends at least one of the following to the second communication node: subcarrier interval indication information, group identification information of virtual carrier information;
the subcarrier interval indication information and/or the group identification information of the virtual carrier information has a binding relationship with one group of virtual carrier information in the one or more groups of virtual carrier information.
In the embodiment of the present invention, the method further includes:
the first communication node sends the resource allocation range information in the group of the virtual carrier information with the binding relationship to the second communication node, wherein the resource allocation range information in the group comprises the size and the position, and the position refers to the relative position relationship between the resource allocation range and each virtual carrier in the group; the resource allocation regions are distributed over one or more of the virtual carriers.
In the embodiment of the present invention, the method further includes:
the first communication node sends dynamic resource allocation indication information to the second communication node, wherein the dynamic resource allocation indication information refers to time/frequency domain resources occupied during actual data transmission.
In the embodiment of the present invention, the method further includes:
the first communication node sends physical carrier indication information to the second communication node, wherein the physical carrier indication information refers to at least one of the following: the bandwidth of the physical carrier, the number of the physical carriers, the identification information of the physical carriers, and the frequency spectrum resources occupied by the physical carriers.
In this embodiment of the present invention, the first communication node indicates whether the current resource allocation of the second communication node includes the DC sub-carrier of one or more virtual carriers based on information sent to the second communication node.
In this embodiment of the present invention, if the current resource allocation of the second communication node includes a DC subcarrier of a virtual carrier, the first communication node performs rate matching, and accordingly, the DC subcarrier of the virtual carrier does not map data.
In the embodiment of the present invention, the virtual carrier index information has a corresponding relationship with the position of the physical carrier.
In this embodiment of the present invention, the number of the virtual carriers and the bandwidth of the virtual carriers are at least related to the bandwidth of the physical carrier, the subcarrier interval of the virtual carrier, and the number of FFT points.
In this embodiment of the present invention, the resource allocation range information is determined based on a capability reported by the second communication node, where the capability includes a number of supported FFT points and/or a supported bandwidth.
In the embodiment of the present invention, the subcarrier spacing used by the virtual carrier in the multiple sets of virtual carrier information has 2 n Multiple relationships, where n is an integer.
In this embodiment of the present invention, the subcarrier spacing indication information indicates a subcarrier spacing used when the second communication node receives data.
In this embodiment of the present invention, the one or more groups of virtual carrier information, subcarrier interval indication information, group identifier information of virtual carrier information, resource allocation range information, dynamic resource allocation indication information, and physical carrier indication information are carried in at least one of the following messages and sent: broadcast messages, system messages, downlink control messages.
Fig. 2 is a second flowchart illustrating a method for indicating a dc subcarrier according to an embodiment of the present invention, where the method for indicating a dc subcarrier in this example is applied to a second communication node, and as shown in fig. 2, the method for indicating a dc subcarrier includes the following steps:
step 201: the second communication node receives at least one of the following sent by the first communication node: one or more groups of virtual carrier information, subcarrier interval indication information, group identification information of the virtual carrier information, resource allocation range information, dynamic resource allocation indication information and physical carrier indication information.
Step 202: the second communication node receives at least one of the following sent by the first communication node: one or more groups of virtual carrier information, subcarrier interval indication information, group identification information of the virtual carrier information, resource allocation range information, dynamic resource allocation indication information and physical carrier indication information.
In this embodiment of the present invention, the virtual carrier information at least includes one of the following:
the number of virtual carriers, the bandwidth of the virtual carriers, the virtual carrier index information, the subcarrier intervals used by the virtual carriers, and the number of FFT points used by the virtual carriers.
In the embodiment of the present invention, the subcarrier interval indication information and/or the group identification information of the virtual carrier information has a binding relationship with one group of virtual carrier information in the one or more groups of virtual carrier information.
In the embodiment of the invention, the resource allocation range information comprises the size and the position, wherein the position refers to the relative position relation between the resource allocation range and each virtual carrier in the group; the resource allocation regions may be distributed over one or more of the virtual carriers.
In the embodiment of the present invention, the dynamic resource allocation indication information refers to time/frequency domain resources occupied during actual data transmission.
In this embodiment of the present invention, the physical carrier indication information refers to at least one of the following information: the bandwidth of the physical carrier, the number of the physical carriers, the identification information of the physical carriers, and the frequency spectrum resources occupied by the physical carriers.
In the embodiment of the present invention, the virtual carrier index information has a corresponding relationship with the position of the physical carrier.
In this embodiment of the present invention, the number of the virtual carriers and the bandwidth of the virtual carriers are at least related to the bandwidth of the physical carrier, the subcarrier interval of the virtual carrier, and the number of FFT points.
In this embodiment of the present invention, the resource allocation range information is determined based on a capability reported by the second communication node, where the capability includes a number of supported FFT points and/or a supported bandwidth.
In the embodiment of the present invention, the subcarrier spacing used by the virtual carrier in the multiple sets of virtual carrier information has 2 n Multiple relationships, where n is an integer.
In this embodiment of the present invention, the subcarrier spacing indication information indicates a subcarrier spacing used when the second communication node receives data.
In this embodiment of the present invention, the one or more groups of virtual carrier information, subcarrier interval indication information, group identifier information of virtual carrier information, resource allocation range information, dynamic resource allocation indication information, and physical carrier indication information are carried in at least one of the following messages and sent: broadcast messages, system messages, downlink control messages.
In the embodiment of the present invention, the determination result indicates that there is a DC subcarrier and there is no DC subcarrier in actual data transmission.
In the embodiment of the present invention, the different methods refer to that when there is no DC subcarrier in the actual data transmission, the second communication node receives all subcarriers in the bandwidth; and when the DC subcarrier exists in the actual data transmission, the DC subcarrier is not received and/or the adjustment receiving is carried out.
In this embodiment of the present invention, the second communication node searches for the virtual carrier information from one or more sets of virtual carrier information according to the subcarrier interval indication information and/or the set identification information of the virtual carrier information.
The method for indicating the dc subcarrier according to the embodiment of the present invention is described in further detail below with reference to specific application scenarios.
Example 1: the present embodiment provides a method for indicating a dc subcarrier, as shown in fig. 9, a specific process includes the following steps:
step 901: the first communication node sends physical carrier indication information, virtual carrier indication information, receiving bandwidth indication information, subcarrier spacing indication information and resource allocation indication information to the second communication node.
In this embodiment of the present invention, the virtual carrier indication information includes at least one of: the number of virtual carriers, virtual carrier identification information, the bandwidth of the virtual carriers, the subcarrier intervals used by the virtual carriers, and the number of FFT points adopted by the virtual carriers.
For example, the virtual carrier indication information at least includes the number of virtual carriers, where the number of virtual carriers is 1 as shown in fig. 3, the number of virtual carriers is 2 as shown in fig. 4, the number of virtual carriers is 4 as shown in fig. 5, and the number of virtual carriers is 2 as shown in fig. 16.
In this embodiment of the present invention, the virtual carrier refers to a subset of the physical carrier.
For example, the virtual carrier may be identical to the physical carrier, as shown in fig. 3, or part of the physical carrier, as shown in fig. 4, 5, 16.
In the embodiment of the present invention, the number of virtual carriers and the bandwidth of a virtual carrier are at least related to the bandwidth of the physical carrier, the subcarrier interval, and the number of FFT points.
For example, as shown in fig. 3, the physical carrier bandwidth is 80MHz, the subcarrier is 60khz, the number of fft points is 2048, the number of virtual carriers is 1, each virtual carrier bandwidth is 80mhz, and the dc subcarrier is located at the center of each virtual carrier bandwidth; as shown in fig. 4, the physical carrier bandwidth is 80MHz, the subcarrier is 30khz, the number of fft points is 2048, and the number of virtual carriers is 2, or, the physical carrier bandwidth is 80MHz, the subcarrier is 15khz, the number of fft points is 4096, the number of virtual carriers is 2, each virtual carrier bandwidth is 40mhz, and the dc subcarrier is located at the center of each virtual carrier bandwidth; as shown in fig. 5, the physical carrier bandwidth is 80MHz, the subcarrier is 15khz, the number of fft points is 2048, the number of virtual carriers is 4, and each virtual carrier bandwidth is 20MHz; as shown in fig. 16, the physical carrier bandwidth is 30MHz, the subcarrier is 15KHz, the number of virtual carriers is 2, the number of FFT points of the virtual carrier 1 is 2048, the bandwidth is 20MHz, the number of FFT points of the virtual carrier 1 is 1024, the bandwidth is 10mhz, and the dc subcarrier is located at the center of each virtual carrier bandwidth.
In the embodiment of the present invention, the physical carrier refers to one or more segments of spectrum resources.
In this embodiment of the present invention, the physical carrier indication information includes at least one of the following information: the bandwidth of the physical carrier, the number of the physical carriers, the identification information of the physical carriers, and the frequency spectrum resources occupied by the physical carriers.
For example, the physical carrier indication information at least includes a bandwidth of the physical carrier and a spectrum resource occupied by the physical carrier, as shown in fig. 3, the bandwidth of the physical carrier is 80MHz, and a frequency band occupied by the material carrier is 30000MHz to 30080MHz.
In this embodiment of the present invention, the receiving bandwidth indication information includes at least one of: the size of the reception bandwidth, and the location information of the reception bandwidth.
For example, the receiving bandwidth indication information refers to the size of the receiving bandwidth and the location information of the receiving bandwidth, as shown in fig. 6, the receiving bandwidth of the second communication node 1 occupies part of the resources of the physical carrier, which corresponds to part of the resources in the virtual carrier 1, where the receiving bandwidth of the second communication node 1 has a DC subcarrier, the receiving bandwidth of the second communication node 2 occupies part of the resources of the physical carrier, which corresponds to only one department in the virtual carrier 2, where the receiving bandwidth of the second communication node 2 does not have a DC subcarrier.
In this embodiment of the present invention, the location information of the receiving bandwidth includes at least one of: and receiving the position relation of the bandwidth in the bandwidth of the physical carrier and the bandwidth of the virtual carrier.
For example, the location information of the receiving bandwidth may be a starting location information and a continuous frequency resource information, as shown in fig. 6, the starting location is a third PRB of the physical carrier, and the frequency resource information is 10MHz or 25 PRBs.
In this embodiment of the present invention, the receiving bandwidth refers to a bandwidth allocated to the second communication node for receiving data.
In this embodiment of the present invention, the receiving bandwidth depends on the capability of the second communication node.
In this embodiment of the present invention, the subcarrier spacing indication information refers to a subcarrier spacing used when the second communication node receives data.
For example, the subcarrier spacing includes multiple kinds, such as 3.75KHz, 7.5KHz, 15KHz, 30KHz, 60KHz, 120KHz, 480KHz, 960KHz, and a total of 8 possible subcarriers are signaled through 3bits signaling, for example, to indicate that 011 corresponds to 30KHz subcarrier spacing.
In the embodiment of the invention, the resource allocation indication information refers to time/frequency domain resources occupied during actual data transmission;
for example, as shown in fig. 7, a DC subcarrier exists in the time/frequency domain resource occupied by the second communication node 1 at the time of actual data transmission; no DC subcarrier is present regardless of how the second communication node 2 resource allocation indication information is allocated; as shown in fig. 8, no DC subcarrier exists in the time/frequency domain resources occupied by the second communication node 1 at the time of actual data transmission; no DC subcarrier is present regardless of how the second communication node 2 resource allocation indication information is allocated.
In the embodiment of the present invention, 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 and are sent.
For example, the physical carrier indication information, the receiving bandwidth indication information, and the subcarrier spacing indication information are carried in a system message and sent; the resource allocation indication message is carried in the downlink control message for sending.
In the embodiment of the invention, the first communication node is a base station and refers to one or more of Macro, micro, pico, femto, RRH, relay, TRP and GNB; the second communication node is one or more of UE and Relay.
For example, the first type of communication node is Macro and the second type of communication node is UE.
Step 902: and the second communication node receives the physical carrier indication information, the virtual carrier indication information, the received bandwidth indication information, the subcarrier interval indication information and the resource allocation indication information, determines the position of the DC subcarrier based on the indication information, judges whether the DC subcarrier exists in actual data transmission or not, and selects different methods to receive data according to different conditions.
In the embodiment of the present invention, the different situations refer to the presence and absence of a DC subcarrier in actual data transmission.
In the embodiment of the present invention, the different methods refer to that when there is no DC subcarrier in the actual data transmission, the second communication node receives all subcarriers in the bandwidth; and when the DC subcarrier exists in the actual data transmission, the receiving is not carried out or the adjustment receiving is carried out.
In the embodiment of the present invention, the second communication node searches for the time/frequency domain resource mapping condition in a resource block Grid (RB Grid) according to the subcarrier spacing indication information.
For example, as shown in fig. 10, for a subcarrier spacing of 30KHz, 1 scheduling unit is compared to 2 subframes in the time domain at a subcarrier spacing of 15KHz and 1 scheduling unit is compared to 2 RBs in the frequency domain at a subcarrier spacing of 60 KHz.
In the embodiment of the invention, the time/frequency domain resources occupied during the actual data transmission of the resources have a corresponding relation with the time/frequency domain resource mapping condition.
For example, the resource allocation indication information transmitted by the first communication node indicates that the resource is allocated to the time/frequency domain scheduling unit, for example, 2 RBs are allocated consecutively in the frequency domain.
Example 2: the present embodiment provides a method for indicating a dc subcarrier, as shown in fig. 12, the specific process includes the following steps:
step 1201: the first communication node sends physical carrier indication information, virtual carrier indication information, receiving bandwidth indication information, subcarrier spacing indication information and resource allocation indication information to the second communication node.
In this embodiment of the present invention, the virtual carrier indication information includes at least one of the following information: the number of virtual carriers, virtual carrier identification information, and the bandwidth of the virtual carriers.
For example, the virtual carrier indication information at least includes the number of virtual carriers, where the number of virtual carriers is 1 as shown in fig. 3, the number of virtual carriers is 2 as shown in fig. 4, the number of virtual carriers is 4 as shown in fig. 5, and the number of virtual carriers is 2 as shown in fig. 16.
In this embodiment of the present invention, the virtual carrier refers to a subset of the physical carrier.
For example, the virtual carrier may be identical to the physical carrier, as shown in fig. 3, or part of the physical carrier, as shown in fig. 4, 5, 16.
In the embodiment of the present invention, the number of virtual carriers and the bandwidth of a virtual carrier are at least related to the bandwidth of the physical carrier, the subcarrier interval, and the number of FFT points.
For example, as shown in fig. 3, the physical carrier bandwidth is 80MHz, the subcarrier is 60khz, the number of fft points is 2048, the number of virtual carriers is 1, each virtual carrier bandwidth is 80mhz, and the dc subcarrier is located at the center of each virtual carrier bandwidth; as shown in fig. 4, the physical carrier bandwidth is 80MHz, the subcarrier is 30khz, the number of fft points is 2048, and the number of virtual carriers is 2, or, the physical carrier bandwidth is 80MHz, the subcarrier is 15khz, the number of fft points is 4096, the number of virtual carriers is 2, each virtual carrier bandwidth is 40mhz, and the dc subcarrier is located at the center of each virtual carrier bandwidth; as shown in fig. 5, the physical carrier bandwidth is 80MHz, the subcarrier is 15khz, the number of fft points is 2048, the number of virtual carriers is 4, and each virtual carrier bandwidth is 20MHz; as shown in fig. 16, the physical carrier bandwidth is 30MHz, the subcarrier is 15KHz, the number of virtual carriers is 2, the number of FFT points of the virtual carrier 1 is 2048, the bandwidth is 20MHz, the number of FFT points of the virtual carrier 1 is 1024, the bandwidth is 10mhz, and the dc subcarrier is located at the center of each virtual carrier bandwidth.
In the embodiment of the present invention, the physical carrier refers to one or more segments of spectrum resources.
In this embodiment of the present invention, the physical carrier indication information includes at least one of the following information: the bandwidth of the physical carrier, the number of the physical carriers, the identification information of the physical carriers, and the frequency spectrum resources occupied by the physical carriers.
For example, the physical carrier indication information at least includes a bandwidth of the physical carrier and a spectrum resource occupied by the physical carrier, as shown in fig. 3, the bandwidth of the physical carrier is 80MHz, and a frequency band occupied by the material carrier is 70000MHz to 70080MHz.
In this embodiment of the present invention, the receiving bandwidth indication information includes at least one of: the size of the reception bandwidth, and the location information of the reception bandwidth.
For example, the receiving bandwidth indication information refers to the size of the receiving bandwidth and the location information of the receiving bandwidth, as shown in fig. 11, the receiving bandwidth of the second communication node occupies part of the resources of the physical carrier, corresponding to part of the resources in the virtual carrier 2 and the virtual carrier 3, and 2 DC subcarriers exist in the receiving bandwidth of the second communication node.
In this embodiment of the present invention, the location information of the receiving bandwidth includes at least one of: and receiving the position relation of the bandwidth in the bandwidth of the physical carrier and the bandwidth of the virtual carrier.
For example, the location information of the receiving bandwidth may be a starting location information and a continuous frequency domain resource information, as shown in fig. 11, the starting location is a certain RB Grid starting location of the physical carrier, and the frequency domain resource information is 20MHz or 25 RB grids.
In this embodiment of the present invention, the receiving bandwidth refers to a bandwidth allocated to the second communication node for receiving data.
In this embodiment of the present invention, the receiving bandwidth depends on the capability of the second communication node.
In this embodiment of the present invention, the subcarrier spacing indication information refers to a subcarrier spacing used when the second communication node receives data.
For example, the subcarrier spacing includes a plurality of subcarriers, such as 3.75KHz, 7.5KHz, 15KHz, 30KHz, 60KHz, 120KHz, 480KHz, 960KHz, and a total of 8 possible subcarriers are signaled by 3bits signaling, for example, indicating 010 that the corresponding subcarrier spacing is 15KHz.
In the embodiment of the present invention, the resource allocation indication information refers to time/frequency domain resources occupied during actual data transmission.
For example, as shown in fig. 11, there are 2 DC subcarriers in the time/frequency domain resources occupied by the second communication node at the time of actual data transmission.
In the embodiment of the present invention, 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 and/or a system message and/or a downlink control message and sent.
For example, the physical carrier indication information is carried in a broadcast message and sent, and the received bandwidth indication information and the subcarrier interval indication information are carried in a system message and sent; the resource allocation indication message is carried in the downlink control message for sending.
In the embodiment of the invention, the first communication node is a base station and refers to one or more of Macro, micro, pico, femto, RRH, relay, TRP and GNB; the second communication node is one or more of UE and Relay.
For example, the first type of communication node is Macro and the second type of communication node is UE.
Step 1202: and the second communication node receives the physical carrier indication information, the virtual carrier indication information, the received bandwidth indication information, the subcarrier interval indication information and the resource allocation indication information, determines the position of the DC subcarrier based on the information, judges whether the DC subcarrier exists in actual data transmission or not, and selects different methods to receive data according to different conditions.
In the embodiment of the present invention, the different situations refer to the presence and absence of a DC subcarrier in actual data transmission.
In the embodiment of the present invention, the different methods refer to that when there is no DC subcarrier in the actual data transmission, the second communication node receives all subcarriers in the bandwidth; and when the DC sub-carrier exists in the actual data transmission, the receiving is not carried out and/or the adjustment receiving is carried out.
In the embodiment of the invention, the second communication node searches the time/frequency domain resource mapping condition in the RB Grid according to the subcarrier spacing indication information.
For example, as shown in fig. 10, for a subcarrier spacing of 15KHz, 1 scheduling unit is compared to 1 subframe in the time domain of 15KHz subcarrier spacing and 1 scheduling unit is compared to 4 RBs in the frequency domain of 60KHz subcarrier spacing.
In the embodiment of the invention, the time/frequency domain resources occupied during the actual data transmission of the resources have a corresponding relation with the time/frequency domain resource mapping condition.
For example, the resource allocation indication information transmitted by the first communication node indicates that the resource is allocated to the time/frequency domain scheduling unit, for example, 4 RBs are allocated consecutively in the frequency domain.
Fig. 13 is a schematic structural diagram of a device for indicating dc subcarriers according to an embodiment of the present invention, which is applied to a first communication node, as shown in fig. 13, the device includes:
a sending unit 1301, configured to send one or more sets of virtual carrier information to a second communication node, where the virtual carrier information at least includes one of:
the number of virtual carriers, the bandwidth of the virtual carriers, virtual carrier index information, subcarrier intervals used by the virtual carriers, and the number of Fast Fourier Transform (FFT) points adopted by the virtual carriers.
In this embodiment of the present invention, the sending unit 1301 is further configured to send at least one of the following to the second communication node: subcarrier interval indication information, group identification information of virtual carrier information;
the subcarrier interval indication information and/or the group identification information of the virtual carrier information has a binding relationship with one group of virtual carrier information in the one or more groups of virtual carrier information.
In this embodiment of the present invention, the sending unit 1301 is further configured to send, to a second communication node, resource allocation range information in a group of the virtual carrier information having the binding relationship, where the resource allocation range information in the group includes a size and a position, and the position refers to a relative position relationship between the resource allocation range and each virtual carrier in the group; the resource allocation regions are distributed over one or more of the virtual carriers.
In this embodiment of the present invention, 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 indicates time/frequency domain resources occupied during actual data transmission.
In this embodiment of the present invention, the sending unit 1301 is further configured to send physical carrier indication information to the second communication node, where the physical carrier indication information indicates at least one of the following: the bandwidth of the physical carrier, the number of the physical carriers, the identification information of the physical carriers, and the frequency spectrum resources occupied by the physical carriers.
In an embodiment of the invention, the first communication node indicates whether the current resource allocation of the second communication node comprises a DC sub-carrier of one or more virtual carriers based on information sent to the second communication node.
In this embodiment of the present invention, if the current resource allocation of the second communication node includes a DC subcarrier of a virtual carrier, the first communication node performs rate matching, and accordingly, the DC subcarrier of the virtual carrier does not map data.
In the embodiment of the present invention, the virtual carrier index information has a corresponding relationship with the position of the physical carrier.
In this embodiment of the present invention, the number of the virtual carriers and the bandwidth of the virtual carriers are at least related to the bandwidth of the physical carrier, the subcarrier spacing of the virtual carriers, and the number of FFT points.
In this embodiment of the present invention, the resource allocation range information is determined based on a capability reported by the second communication node, where the capability includes a number of supported FFT points and/or a supported bandwidth.
In the embodiment of the present invention, the subcarrier spacing used by the virtual carrier in the multiple sets of virtual carrier information has 2 n Multiple relationships, where n is an integer.
In this embodiment of the present invention, the subcarrier spacing indication information indicates a subcarrier spacing used when the second communication node receives data.
In this embodiment of the present invention, the one or more groups of virtual carrier information, subcarrier interval indication information, group identifier information of virtual carrier information, resource allocation range information, dynamic resource allocation indication information, and physical carrier indication information are carried in at least one of the following messages and sent: broadcast messages, system messages, downlink control messages.
It should be understood by those skilled in the art that the functions of the units in the apparatus for indicating dc subcarriers shown in fig. 13 can be understood by referring to the related description of the method for indicating dc subcarriers. The functions of the units in the apparatus for indicating a dc subcarrier shown in fig. 13 may be implemented by a program running on a processor, or may be implemented by a specific logic circuit.
Fig. 14 is a structural configuration diagram of an apparatus for indicating a dc subcarrier according to an embodiment of the present invention, which is applied to a second communication node, and as shown in fig. 14, the apparatus includes:
a receiving unit 1401, which receives at least one of the following sent by the first communication node: one or more groups of virtual carrier information, subcarrier interval indication information, group identification information of the virtual carrier information, resource allocation range information, dynamic resource allocation indication information and physical carrier indication information; and the received message determines the position of the DC subcarrier, judges whether the DC subcarrier exists in actual data transmission or not at the same time, and selects different methods for data reception according to the judgment result.
In this embodiment of the present invention, the virtual carrier information at least includes one of the following:
the number of virtual carriers, the bandwidth of the virtual carriers, virtual carrier index information, subcarrier intervals used by the virtual carriers, and the number of FFT points used by the virtual carriers.
In the embodiment of the present invention, the subcarrier interval indication information and/or the group identification information of the virtual carrier information has a binding relationship with one group of virtual carrier information in the one or more groups of virtual carrier information.
In the embodiment of the invention, the resource allocation range information comprises the size and the position, wherein the position refers to the relative position relation between the resource allocation range and each virtual carrier in the group; the resource allocation regions may be distributed over one or more of the virtual carriers.
In the embodiment of the present invention, the dynamic resource allocation indication information refers to time/frequency domain resources occupied during actual data transmission.
In this embodiment of the present invention, the physical carrier indication information refers to at least one of the following information: the bandwidth of the physical carrier, the number of the physical carriers, the identification information of the physical carriers, and the frequency spectrum resources occupied by the physical carriers.
In the embodiment of the present invention, the virtual carrier index information has a corresponding relationship with the position of the physical carrier.
In this embodiment of the present invention, the number of the virtual carriers and the bandwidth of the virtual carriers are at least related to the bandwidth of the physical carrier, the subcarrier interval of the virtual carrier, and the number of FFT points.
In this embodiment of the present invention, the resource allocation range information is determined based on a capability reported by the second communication node, where the capability includes a number of supported FFT points and/or a supported bandwidth.
In the embodiment of the present invention, the subcarrier spacing used by the virtual carrier in the multiple sets of virtual carrier information has 2 n Multiple relationships, where n is an integer.
In this embodiment of the present invention, the subcarrier spacing indication information indicates a subcarrier spacing used when the second communication node receives data.
In this embodiment of the present invention, the one or more groups of virtual carrier information, subcarrier interval indication information, group identifier information of virtual carrier information, resource allocation range information, dynamic resource allocation indication information, and physical carrier indication information are carried in at least one of the following messages and sent: broadcast messages, system messages, downlink control messages.
In the embodiment of the present invention, the determination result indicates that there is a DC subcarrier and there is no DC subcarrier in actual data transmission.
In the embodiment of the present invention, the different methods refer to that when there is no DC subcarrier in the actual data transmission, the second communication node receives all subcarriers in the bandwidth; and when the DC sub-carrier exists in the actual data transmission, the DC sub-carrier is not received and/or the adjustment receiving is carried out.
In this embodiment of the present invention, the second communication node searches for the virtual carrier information in one or more groups of virtual carrier information according to the subcarrier interval indication information and/or the group identification information of the virtual carrier information.
It should be understood by those skilled in the art that the functions of the units in the apparatus for indicating dc subcarriers shown in fig. 14 can be understood by referring to the related description of the method for indicating dc subcarriers. The functions of the units in the apparatus for indicating dc subcarriers shown in fig. 14 may be implemented by a program running on a processor, or may be implemented by specific logic circuits.
Fig. 15 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 15, the electronic device includes a processor 1501 and a memory 1502 storing instructions executable by the processor 1501, and when the instructions are executed by the processor 1501,
in the first embodiment, the processor 1501 executes the following steps: transmitting one or more sets of virtual carrier information to a second communication node, wherein the virtual carrier information comprises at least one of: the number of virtual carriers, the bandwidth of the virtual carriers, virtual carrier index information, subcarrier intervals used by the virtual carriers, and the number of FFT points adopted by the virtual carriers.
In the second embodiment, the processor 1501 executes the following steps: receiving at least one of the following sent by the first communication node: one or more groups of virtual carrier information, subcarrier interval indication information, group identification information of the virtual carrier information, resource allocation range information, dynamic resource allocation indication information and physical carrier indication information; and the received message determines the position of the DC subcarrier, judges whether the DC subcarrier exists in actual data transmission or not at the same time, and selects different methods for data reception according to the judgment result.
It will be appreciated by those skilled in the art that the electronic device shown in fig. 15 is capable of performing the method steps of indicating a dc subcarrier in any of the embodiments of the present invention.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (58)

1. A method of indicating a direct current, DC, subcarrier, the method comprising:
the first communication node sends one or more groups of virtual carrier information to the second communication node, so that the second communication node determines the position of the DC subcarrier based on the received message, simultaneously judges whether the DC subcarrier exists in actual data transmission, and selects different methods for data reception according to the judgment result, wherein the virtual carrier information at least comprises one of the following steps:
the number of virtual carriers, the bandwidth of the virtual carriers, virtual carrier index information, subcarrier intervals used by the virtual carriers, and the number of FFT points adopted by the virtual carriers.
2. The method of claim 1, further comprising:
the first communication node sends at least one of the following to the second communication node: subcarrier interval indication information, group identification information of virtual carrier information;
the subcarrier interval indication information and/or the group identification information of the virtual carrier information has a binding relationship with one group of virtual carrier information in the one or more groups of virtual carrier information.
3. The method of claim 2, further comprising:
the first communication node sends the resource allocation range information in the group of the virtual carrier information with the binding relationship to the second communication node, wherein the resource allocation range information in the group comprises the size and the position, and the position refers to the relative position relationship between the resource allocation range and each virtual carrier in the group; the resource allocation extent is distributed over one or more of the virtual carriers.
4. The method of claim 1, further comprising:
the first communication node sends dynamic resource allocation indication information to the second communication node, wherein the dynamic resource allocation indication information refers to time/frequency domain resources occupied during actual data transmission.
5. The method of claim 1, further comprising:
the first communication node sends physical carrier indication information to the second communication node, wherein the physical carrier indication information refers to at least one of the following: the bandwidth of the physical carrier, the number of the physical carriers, the identification information of the physical carriers, and the frequency spectrum resources occupied by the physical carriers.
6. A method according to any of claims 1-5, wherein the first communications node indicates whether the second communications node's current resource allocation includes the DC sub-carrier of one or more virtual carriers based on information sent to the second communications node.
7. The method of claim 6, wherein the first communication node rate matches if the second communication node current resource allocation comprises a DC sub-carrier of a virtual carrier, and wherein the DC sub-carrier of the virtual carrier is not mapped with data accordingly.
8. The method of claim 5, wherein the virtual carrier index information corresponds to a location of the physical carrier.
9. A method according to claim 5, wherein the number of virtual carriers and the bandwidth of a 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.
10. The method of claim 3, wherein the intra-group resource allocation range information is determined based on capabilities reported by the second communication node, and wherein the capabilities comprise a number of supported FFT points and/or a supported bandwidth.
11. The method of claim 1, wherein the subcarrier spacing used by the virtual carrier in the plurality of sets of virtual carrier information has a value of 2 n Multiple relationships, where n is an integer.
12. The method of claim 2, wherein the subcarrier spacing indication information indicates a subcarrier spacing used by the second communication node when receiving data.
13. The method of claim 5, wherein the one or more groups 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 sent in at least one of the following messages: broadcast messages, system messages, downlink control messages.
14. A method of indicating a direct current, DC, subcarrier, the method comprising:
the second communication node receives at least one of the following sent by the first communication node: one or more groups of virtual carrier information, subcarrier interval indication information, group identification information of the virtual carrier information, resource allocation range information, dynamic resource allocation indication information and physical carrier indication information;
and the second communication node determines the position of the DC subcarrier based on the received message, judges whether the DC subcarrier exists in actual data transmission or not, and selects different methods for data reception according to the judgment result.
15. The method of claim 14, wherein the virtual carrier information comprises at least one of:
the number of virtual carriers, the bandwidth of the virtual carriers, virtual carrier index information, subcarrier intervals used by the virtual carriers, and the number of FFT points used by the virtual carriers.
16. The method according to claim 14, wherein the subcarrier spacing indication information and/or the group identification information of the virtual carrier information is in a binding relationship with one of the one or more groups of virtual carrier information.
17. The method according to claim 14, wherein the resource allocation range information includes size and position, wherein the position refers to a relative position relationship between the resource allocation range and each virtual carrier in the group; the resource allocation regions may be distributed over one or more of the virtual carriers.
18. The method of claim 14, wherein the dynamic resource allocation indication information refers to time/frequency domain resources occupied during actual data transmission.
19. The method according to claim 14, wherein the physical carrier indication information refers to at least one of: the bandwidth of the physical carrier, the number of the physical carriers, the identification information of the physical carriers, and the frequency spectrum resources occupied by the physical carriers.
20. A method according to claim 15 or 18, wherein the virtual carrier index information has a correspondence with the location of the physical carrier.
21. A method as claimed in claim 14, 18 or 19, wherein the number of virtual carriers and the bandwidth of a 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.
22. The method of claim 17, wherein the resource allocation range information is determined based on capabilities reported by the second communication node, and wherein the capabilities comprise a number of supported FFT points and/or a supported bandwidth.
23. A method as claimed in claim 14 or 15, wherein the subcarrier spacing used by the virtual carrier in the plurality of sets of virtual carrier information has a value of 2 n Multiple relationships, where n is an integer.
24. The method according to claim 17, wherein the subcarrier spacing indication information indicates a subcarrier spacing used when the second communication node receives data.
25. The method of claim 18, wherein 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 sent in at least one of the following messages: broadcast messages, system messages, downlink control messages.
26. The method of claim 14, wherein the determination result indicates that there is a DC subcarrier and no DC subcarrier in actual data transmission.
27. The method of claim 14, wherein the different method refers to the second communication node receiving all subcarriers on a bandwidth when there is no DC subcarrier in the actual data transmission; and when the DC sub-carrier exists in the actual data transmission, the DC sub-carrier is not received and/or the adjustment receiving is carried out.
28. A method according to claim 14 or 16, wherein the second communications node searches for virtual carrier information from one or more sets of virtual carrier information according to the subcarrier spacing indication information and/or group identification information of virtual carrier information.
29. An apparatus for indicating a DC subcarrier applied to a first communication node, the apparatus comprising:
a sending unit, configured to send one or more sets of virtual carrier information to a second communications node, so that the second communications node determines a location of the DC subcarrier based on the received message, and at the same time, determines whether there is the DC subcarrier in actual data transmission, and selects different methods according to a determination result to perform data reception, where the virtual carrier information at least includes one of:
the number of virtual carriers, the bandwidth of the virtual carriers, virtual carrier index information, subcarrier intervals used by the virtual carriers, and the number of Fast Fourier Transform (FFT) points adopted by the virtual carriers.
30. The apparatus of claim 29, wherein the sending unit is further configured to send, to the second communication node, at least one of: subcarrier interval indication information, group identification information of virtual carrier information;
the subcarrier interval indication information and/or the group identification information of the virtual carrier information has a binding relationship with one group of virtual carrier information in the one or more groups of virtual carrier information.
31. The apparatus of claim 30, wherein the sending unit is further configured to send intra-group resource allocation range information of the group of virtual carrier information with the binding relationship to a second communication node, where the intra-group resource allocation range information includes a size and a position, where the position refers to a relative position relationship between the resource allocation range and each virtual carrier in the group; the resource allocation regions are distributed over one or more of the virtual carriers.
32. The apparatus of claim 29, wherein the sending unit is further configured to send dynamic resource allocation indication information to the second communications node, and the dynamic resource allocation indication information refers to time/frequency domain resources occupied during actual data transmission.
33. The apparatus of claim 29, wherein the sending unit is further configured to send physical carrier indication information to the second communication node, where the physical carrier indication information indicates at least one of the following: the bandwidth of the physical carrier, the number of the physical carriers, the identification information of the physical carriers, and the frequency spectrum resources occupied by the physical carriers.
34. The apparatus according to any of claims 29-33, wherein the first communication node indicates whether the second communication node's current resource allocation comprises the DC sub-carrier of one or more virtual carriers based on information sent to the second communication node.
35. The apparatus according to claim 34, wherein the first communication node rate matches if the second communication node current resource allocation comprises a DC sub-carrier of a virtual carrier, and wherein accordingly no data is mapped to the DC sub-carrier of the virtual carrier.
36. The apparatus of claim 33, wherein the virtual carrier index information corresponds to a location of the physical carrier.
37. An apparatus according to claim 33, wherein the number of virtual carriers and the bandwidth of a virtual carrier is related to at least the bandwidth of the physical carrier, the subcarrier spacing of the virtual carrier and the number of FFT points.
38. The apparatus of claim 31, wherein the intra-group resource allocation zone information is determined based on capabilities reported by the second communication node, the capabilities comprising a number of FFT points supported and/or a bandwidth supported.
39. The apparatus of claim 29, wherein the subcarrier spacing used by the virtual carrier in the plurality of sets of virtual carrier information has a value of 2 n Multiple relationships, where n is an integer.
40. The apparatus of claim 30 wherein the subcarrier spacing indication information indicates a subcarrier spacing used by the second communications node in receiving data.
41. An apparatus according to any one of claims 29-33, wherein the one or more sets of virtual carrier information, subcarrier spacing indication information, set identification information of virtual carrier information, resource allocation range information, dynamic resource allocation indication information, physical carrier indication information are transmitted in at least one of the following messages: broadcast messages, system messages, downlink control messages.
42. An apparatus for indicating a DC subcarrier applied to a second communication node, the apparatus comprising:
the receiving unit receives at least one of the following sent by the first communication node: one or more groups of virtual carrier information, subcarrier interval indication information, group identification information of the virtual carrier information, resource allocation range information, dynamic resource allocation indication information and physical carrier indication information; and the received message determines the position of the DC subcarrier, judges whether the DC subcarrier exists in actual data transmission or not at the same time, and selects different methods for data reception according to the judgment result.
43. An apparatus according to claim 42, wherein the virtual carrier information comprises at least one of:
the number of virtual carriers, the bandwidth of the virtual carriers, virtual carrier index information, subcarrier intervals used by the virtual carriers, and the number of FFT points used by the virtual carriers.
44. An apparatus according to claim 42, wherein subcarrier spacing indication information and/or group identity information of virtual carrier information is in a binding relationship with one of said one or more groups of virtual carrier information.
45. The apparatus of claim 42, wherein the resource allocation range information comprises a size and a position, wherein the position refers to a relative position relationship between the resource allocation range and each virtual carrier in the group; the resource allocation regions may be distributed over one or more of the virtual carriers.
46. The apparatus of claim 42, wherein the dynamic resource allocation indication information refers to time/frequency domain resources occupied during actual data transmission.
47. The apparatus according to claim 42, wherein the physical carrier indication information refers to at least one of: the bandwidth of the physical carrier, the number of the physical carriers, the identification information of the physical carriers, and the frequency spectrum resources occupied by the physical carriers.
48. An apparatus according to claim 43 or 46, wherein the virtual carrier index information has a correspondence with the location of the physical carrier.
49. An apparatus as claimed in claim 42, 46 or 47, wherein the number of virtual carriers and the bandwidth of a 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.
50. The apparatus of claim 45, wherein the resource allocation scope information is determined based on capabilities reported by the second communication node, the capabilities comprising a number of supported FFT points and/or a supported bandwidth.
51. An apparatus according to claim 42 or 43, wherein the subcarrier spacing used by the virtual carriers in the plurality of sets of virtual carrier information has a value of 2 n Multiple relationships, where n is an integer.
52. The apparatus of claim 45 wherein the subcarrier spacing indication information indicates a subcarrier spacing used by the second communications node when receiving data.
53. An apparatus according to any of claims 42-46, wherein the one or more sets of virtual carrier information, subcarrier spacing indication information, set identification information for virtual carrier information, resource allocation range information, dynamic resource allocation indication information, physical carrier indication information are sent in at least one of the following messages: broadcast messages, system messages, downlink control messages.
54. The apparatus of claim 42, wherein the determination result indicates that there is a DC subcarrier and no DC subcarrier in actual data transmission.
55. The apparatus of claim 42, wherein the different method means that the second communication node receives all subcarriers over a bandwidth when there are no DC subcarriers in the actual data transmission; and when the DC subcarrier exists in the actual data transmission, the DC subcarrier is not received and/or the adjustment receiving is carried out.
56. An apparatus according to claim 42 or 44, wherein the second communications node searches for virtual carrier information from one or more sets of virtual carrier information according to the subcarrier spacing indication information and/or group identification information of virtual carrier information.
57. An electronic device comprising a processor and a memory having stored thereon instructions executable by the processor, the processor performing the method steps of indicating a DC subcarrier of any of claims 1-13 when the instructions are executed by the processor.
58. An electronic device comprising a processor and a memory having stored thereon instructions executable by the processor, the processor performing the method steps of indicating a DC subcarrier of any of claims 14-28 when the instructions are executed by the processor.
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