Air-ground co-frequency networking communication method and wireless communication system

Abstract

The invention discloses an air-ground co-frequency networking communication method and a wireless communication system. The method comprises the following steps: configuring a first SSB corresponding to an air cell and a second SSB corresponding to a ground cell on a target carrier, and configuring a first SIB1 associated with the first SSB and a second SIB1 associated with the second SSB; the first SSB and the second SSB are broadcast periodically, the bandwidths and the center frequency points of the first SSB and the second SSB are the same, the GSCNs are different, and the sending interval is a preset integer frame; broadcasting a first DCI (Downlink Control Information) comprising the first SIB1 scheduling information and a second DCI comprising the second SIB1 scheduling information through the PDCCH; and broadcasting a first SIB1 used for determining the resource information of the PUCCH common resource when the air terminal initially accesses the air cell and a second SIB1 used for determining the resource information of the PUCCH common resource when the ground terminal initially accesses the ground cell through the PDSCH. According to the invention, the technical problem that the related air-ground integrated base station sends the air beam and the ground beam at the same time, and interference is generated between the air beam and the ground beam is solved.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to an air-to-ground co-frequency networking communication method and a wireless communication system. Background Art

[0002] The current low-altitude economy is developing rapidly, and drones are widely used in consumer entertainment, logistics and transportation, agricultural meteorology, industrial production, geo-energy, smart cities and other civil fields, showing advantages such as improving efficiency and reducing costs. However, with the rapid increase in the number of drones and their wide application needs, it is urgent to build a low-altitude information network covering low altitudes to ensure the real-time transmission of drone flight control information and business data communication services. The traditional cellular mobile network is mainly aimed at covering ground terminals, while the low-altitude information network needs to achieve three-dimensional coverage of the airspace, especially the low-altitude information network needs to cover the three-dimensional space of the airspace, which is quite different from the traditional two-dimensional plane coverage on the ground. At the same time, since the existing cellular base stations have achieved continuous coverage of the ground, how to achieve three-dimensional coverage of the low-altitude airspace based on cellular mobile base stations without affecting the continuous coverage of the ground has become an important issue.

[0003] If the air network and the ground network are networked at different frequencies, two cellular mobile base station networks with different carriers need to be deployed, which results in high construction costs. If the air network and the ground network are networked at the same frequency, considering that there are upper and lower side lobes when the base station antenna transmits signals, the upper side lobe of the base station antenna's ground beam will be transmitted to the air, while the lower side lobe of the base station antenna's air beam will be transmitted to the ground, and there will be co-frequency interference between the air network and the ground network.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present application provide an air-to-ground co-frequency networking communication method and a wireless communication system to at least solve the technical problem that related air-to-ground integrated base stations simultaneously send air beams and ground beams, which may cause interference.

[0006] According to one aspect of an embodiment of the present application, a method for air-to-ground co-frequency networking communication is provided, including: configuring a first SSB corresponding to an air logical cell and a second SSB corresponding to a ground logical cell on a target carrier, and configuring a first SIB1 associated with the first SSB and a second SIB1 associated with the second SSB, wherein the air logical cell and the ground logical cell are the same physical cell; periodically broadcasting the first SSB and the second SSB, wherein the bandwidth and the center frequency of the first SSB and the second SSB are the same, the GSCN is different, and the sending interval is a preset integer frame; broadcasting the first DCI and the second DCI through the PDCCH, wherein the first DCI includes scheduling information of the first SIB1, and the second DCI includes scheduling information of the second SIB1; broadcasting the first SIB1 and the second SIB1 through the PDSCH, wherein the first SIB1 is used to determine the first resource information of the first PUCCH public resource when the air terminal initially accesses the air logical cell, and the second SIB1 is used to determine the second resource information of the second PUCCH public resource when the ground terminal initially accesses the ground logical cell.

[0007] Optionally, the PCIs of the air logical cell and the ground logical cell are configured to be the same or different; and the NCGIs of the air logical cell and the ground logical cell are configured to be different.

[0008] Optionally, configuring a first SIB1 associated with the first SSB and a second SIB1 associated with the second SSB includes: respectively configuring the pucch-ResourceCommon field in the pucch-ConfigCommon field in the first SIB1 and the second SIB1, wherein the pucch-ResourceCommon field includes: the format of PUCCH, the first symbol position and duration in the time domain, the PRB offset in the initial uplink bandwidth in the frequency domain, and an initial cyclic shift index set.

[0009] Optionally, periodically broadcasting the first SSB and the second SSB includes: periodically broadcasting the first SSB using a first preset number of air beams, and broadcasting the second SSB using a second preset number of ground beams.

[0010] Optionally, broadcasting the first DCI and the second DCI through the PDCCH includes: broadcasting the first DCI based on the first CORESET corresponding to the first PDCCH, wherein the first DCI includes a first PRI with a preset number of bits corresponding to the first PUCCH common resources; broadcasting the second DCI based on the second CORESET corresponding to the second PDCCH, wherein the second DCI includes a second PRI with a preset number of bits corresponding to the second PUCCH common resources, and the highest bits of the first PRI and the second PRI are different.

[0011] Optionally, the first resource information includes: a first PRB index of a first hop of the first PUCCH common resource transmission information of the air terminal, a second PRB index of a second hop, and a first initial cyclic shift index; wherein, When , the first initial cyclic shift index is The first PRB index is The second PRB index is exist When , the first initial cyclic shift index is The first PRB index is The second PRB index is In the formula, r PUCCH1 represents the index of the first PUCCH common resource, N CCE1 is the number of CCEs in the first CORESET, n CCE1,0 is the index of the first CCE in the first CORESET, Δ PRI1 is the value of the first PRI, N CS1 is the number of initial cyclic shift indices in the initial cyclic shift index set of the first SIB1 configuration, is the PRB offset in the initial uplink bandwidth of the first SIB1 configuration, is the number of PRBs in the initial uplink bandwidth configured by the first SIB1; the second resource information includes: the third PRB index of the first hop of the second PUCCH common resource transmission information of the ground terminal, the fourth PRB index of the second hop, and the second initial cyclic shift index; wherein, in When the second initial cyclic shift index is The third PRB index is The fourth PRB index is exist When the second initial cyclic shift index is The third PRB index is The fourth PRB index is In the formula, r PUCCH2 represents the index of the second PUCCH common resource, N CCE2 is the number of CCEs in the second CORESET, n CCE2,0 is the index of the first CCE in the second CORESET, Δ PRI2 is the value of the second PRI, N CS2 is the number of initial cyclic shift indices in the set of initial cyclic shift indices for the second SIB1 configuration, is the PRB offset in the initial uplink bandwidth of the second SIB1 configuration, is the number of PRBs in the initial uplink bandwidth of the second SIB1 configuration.

[0012] Optionally, after broadcasting the first SIB1 and the second SIB1 through PDSCH, the method also includes: receiving a first HARQ-ACK message transmitted by the air terminal based on the first PUCCH common resources; and / or, receiving a second HARQ-ACK message transmitted by the ground terminal based on the second PUCCH common resources.

[0013] According to another aspect of an embodiment of the present application, a wireless communication system is also provided, including: a base station, an air terminal and a ground terminal, wherein the base station is used to configure a first SSB corresponding to an air logical cell and a second SSB corresponding to a ground logical cell on a target carrier, and configure a first SIB1 associated with the first SSB and a second SIB1 associated with the second SSB, wherein the air logical cell and the ground logical cell are the same physical cell; periodically broadcasting the first SSB and the second SSB, wherein the bandwidth and the center frequency of the first SSB and the second SSB are the same, the GSCN is different, and the sending interval is a preset integer frame; broadcasting the first DCI and the second DCI through the PDCCH, wherein the first DCI includes scheduling information of the first SIB1, and the second DCI includes scheduling information of the second SIB1; broadcasting the first SIB1 and the second SIB1 through the PDSCH, wherein the first SIB1 is used to determine the first resource information of the first PUCCH common resource when the air terminal initially accesses the air logical cell, and the second SIB1 is used to determine the second resource information of the second PUCCH common resource when the ground terminal initially accesses the ground logical cell.

[0014] According to another aspect of an embodiment of the present application, a computer program product is also provided, the computer program product comprising: a computer program, wherein when the computer program is executed by a processor, the above-mentioned air-to-ground co-frequency networking communication method is implemented.

[0015] According to another aspect of an embodiment of the present application, an electronic device is also provided, which includes: a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to execute the above-mentioned air-to-ground co-frequency networking communication method through the computer program.

[0016] In an embodiment of the present application, a physical cell is configured as two logical cells, one for the air and the other for the ground. Separate SSBs are defined for them on the same carrier. The two SSBs have the same bandwidth and center frequency, and are sent at intervals of preset integer frames. The same frequency networking of the air network and the ground network can be achieved without adding new carrier resource configurations. The two logical cells share the PUCCH common resources, and through semi-static configuration of the PUCCH common resources of the two, the terminals can be staggered in the time domain, frequency domain, and code domain to avoid collisions. The present application effectively solves the technical problem that the relevant air-ground integrated base station sends the air beam and the ground beam at the same time, which will cause interference between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 is a schematic diagram of the structure of an optional wireless communication system according to an embodiment of the present application;

[0019] Figure 2 It is a flow chart of an optional air-to-ground co-frequency networking communication method according to an embodiment of the present application;

[0020] Figure 3 It is a schematic diagram of the structure of an optional electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0022] It should be noted that the terms "first", "second", etc. in the specification, claims and drawings of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] In order to better understand the embodiments of the present application, some nouns or terms that appear in the description of the embodiments of the present application are first translated and explained as follows:

[0024] SSB (Synchronization Signal Block): It is a signal block used in 5G NR to help terminals perform time and frequency synchronization. It includes PSS (Primary Synchronization Signals), SSS (Secondary Synchronization Signals) and PBCH (Physical Broadcast Channel). Among them, PBCH is used to transmit MIB (Master Information Block), which contains the parameters required to decode SIB1 (System Information Block Type 1), such as subcarrier spacing, SSB subcarrier offset, PDCCH (Physical Downlink Control Channel) configuration, etc. Once the terminal successfully decodes the MIB, it can use these parameters to decode SIB1, and then obtain more detailed cell configuration information and scheduling information of other system information.

[0025] GSCN (Global Synchronization Channel Number): It is a globally unique frequency domain position number used to identify SSB in 5G NR. Each GSCN corresponds to a specific SSB frequency, which is the starting frequency of the 0th subcarrier in the 10th PRB (Physical Resource Block) of the SSB.

[0026] PRB: It is the basic unit of frequency domain resource allocation. PRB is a frequency block in OFDM (Orthogonal Frequency Division Multiplexing) signal, used to carry physical channels in wireless communication.

[0027] SIB (System Information Block): It is an information block that transmits network control information in 5G NR, including cell configuration information, etc. SIB1 is the most important SIB, which contains key information required for the terminal to access the cell, such as cell selection and reselection criteria, connection establishment failure control, SI scheduling information, etc. In addition, SIB1 also provides the availability and scheduling information of other system information blocks (SIB2 and later).

[0028] PDSCH (Physical Downlink Shared Channel): It is the main physical channel used to transmit downlink data in 5G NR. It is responsible for transmitting data from the base station to the user equipment.

[0029] PDCCH: It is a physical channel that carries DCI (Downlink Control Information) in 5G NR. PDCCH first sends control information to the terminal, telling the terminal the resource allocation on PDSCH, and then the terminal receives the downlink data on PDSCH based on this control information.

[0030] DCI: It is important control information used to schedule physical resources. It can indicate resource allocation of physical channels such as PDSCH and PUSCH (Physical Uplink Shared Channel). DCI usually has a PRI (PUCCH Resource Indicator) field, which is used to indicate the allocation of PUCCH (Physical Uplink Control Channel) resources. This field is used to tell the terminal which PUCCH resource to use to send the corresponding uplink control information when scheduling PUSCH.

[0031] CORESET (Control Resource Set): It is a specific set of physical resources used to carry PDCCH in 5G NR. It defines the transmission range of PDCCH in the time-frequency domain.

[0032] CCE (Control Channel Element): is the basic unit of PDCCH channel resource allocation. The number of CCEs in PDCCH determines the transmission capacity of control information, and the aggregation degree of CCE affects the transmission reliability and demodulation performance of PDCCH.

[0033] PUSCH: It is the main physical channel used to transmit uplink data in 5G NR. It is responsible for transmitting data from user equipment to base station.

[0034] PUCCH: It is a physical channel in 5G NR that carries uplink control information, such as HARQ-ACK (Hybrid Automatic Repeat Request-Acknowledge) and other feedback information.

[0035] PCI (Physical Cell Identity): an identifier used to identify each cell in the network.

[0036] NCGI (NR Cell Global Identifier): An identifier used to globally identify 5G NR cells.

[0037] Example 1

[0038] According to an embodiment of the present application, a wireless communication system is first provided, such as Figure 1 As shown, the system at least includes: a base station 11, an aerial terminal 12 and a ground terminal 13, wherein the aerial terminal 12 can be a device such as a drone, and the ground terminal 13 can be a mobile communication device such as a mobile phone or a pad.

[0039] During the communication process, the base station 11 can configure the first SSB corresponding to the air logical cell and the second SSB corresponding to the ground logical cell on the target carrier, and configure the first SIB1 associated with the first SSB and the second SIB1 associated with the second SSB, wherein the air logical cell and the ground logical cell are the same physical cell; thereafter, the base station 11 can periodically broadcast the first SSB and the second SSB, wherein the bandwidth and the center frequency of the first SSB and the second SSB are the same, the GSCN is different, and the sending interval is a preset integer frame; thereafter, the base station 11 can broadcast the first DCI and the second DCI through the PDCCH, wherein the first DCI includes the scheduling information of the first SIB1, and the second DCI includes the scheduling information of the second SIB1; finally, the base station 11 can broadcast the first SIB1 and the second SIB1 through the PDSCH, wherein the first SIB1 is used to determine the first resource information of the first PUCCH public resource when the air terminal 12 initially accesses the air logical cell, and the second SIB1 is used to determine the second resource information of the second PUCCH public resource when the ground terminal 13 initially accesses the ground logical cell.

[0040] The communication process of the wireless communication system is described below in conjunction with specific implementation methods.

[0041] As an optional implementation, in order to achieve co-frequency networking of air networks and ground networks without adding new carrier resource configuration, the embodiment of the present application logically divides a physical cell into an air cell and a ground cell, wherein the PCI of the air logical cell and the ground logical cell can be configured to be the same or different, but the NCGI of the two must be configured to be different.

[0042] Optionally, a corresponding first SSB may be configured for the air logical cell and a corresponding second SSB may be configured for the ground logical cell on the target carrier, and the target carrier may be a 100M single carrier resource commonly used in 5G NR. When configuring the first SSB and the second SSB, the bandwidth and center frequency of the two may be the same, the GSCN may be different, and the transmission interval may be set to a preset integer frame.

[0043] Optionally, the base station can also configure the first SIB1 associated with the first SSB and the second SIB1 associated with the second SSB in the following manner: respectively configure the pucch-ResourceCommon field in the pucch-ConfigCommon field in the first SIB1 and the second SIB1, wherein the pucch-ResourceCommon field includes: the format of PUCCH, the first symbol position and duration in the time domain, the PRB offset in the initial uplink bandwidth in the frequency domain, and the initial cyclic shift index set.

[0044] After the relevant information is configured, the base station can periodically broadcast the first SSB and the second SSB. The broadcast periods of the two are the same and they are sent at a preset integer frame interval in time. Optionally, when broadcasting SSB, the number of air beams and ground beams can be configured independently. Specifically, the first SSB can be broadcast using a first preset number of air beams, and the second SSB can be broadcast using a second preset number of ground beams. Among them, the first preset number can be flexibly configured based on the requirements of low-altitude economic three-dimensional coverage networking, such as 3-7 air beams, and the second preset number can refer to the existing network configuration, such as 7 ground beams.

[0045] Optionally, the base station may broadcast the first DCI and the second DCI through the PDCCH. Specifically, the base station may broadcast the first DCI based on the first CORESET corresponding to the first PDCCH, wherein the first DCI includes a first PRI of a preset number of bits corresponding to the first PUCCH common resource; and may broadcast the second DCI based on the second CORESET corresponding to the second PDCCH, wherein the second DCI includes a second PRI of a preset number of bits corresponding to the second PUCCH common resource.

[0046] In order to avoid collisions in the initial access phase of the terminal while allowing the air-to-air logical cell and the ground-to-ground logical cell to share the PUCCH common resources, the embodiment of the present application defines the first PRI and the second PRI differently, so that their highest bits are different. For example, the above-mentioned preset number of bits is 3 bits, that is, the first PRI and the second PRI are both 3 bits, and the highest bit of the first PRI can be set to always be 1, and the highest bit of the second PRI can be set to always be 0, so that the air-to-air logical cell and the ground-to-ground logical cell each occupy half of the PUCCH common resources, and are far apart in the frequency domain, each occupying both ends of the initial bandwidth.

[0047] Optionally, the base station can broadcast a first SIB1 via PDSCH, where the first SIB1 is used to determine first resource information of a first PUCCH common resource when the air terminal initially accesses an air logical cell, where the first resource information includes: a first PRB index of the first hop of the air terminal's transmission of information on the first PUCCH common resource, a second PRB index of the second hop, and a first initial cyclic shift index.

[0048] Specifically, the air terminal may determine the first resource information in the following manner.

[0049] First, the index information of the first PUCCH common resource is calculated by the following formula:

[0050]

[0051] In the formula, r PUCCH1 represents the index of the first PUCCH common resource, N CCE1is the number of CCEs in the first CORESET, n CCE1,0 is the index of the first CCE in the first CORESET, Δ PRI1 is the value of the first PRI.

[0052] exist When , the first initial cyclic shift index can be determined as The first PRB index is The second PRB index is

[0053] exist When , the first initial cyclic shift index can be determined as The first PRB index is The second PRB index is

[0054]

[0055] In the formula, is the PRB offset in the initial uplink bandwidth of the first SIB1 configuration, is the number of PRBs in the initial uplink bandwidth of the first SIB1 configuration.

[0056] Afterwards, the base station may receive a first HARQ-ACK message transmitted by the air terminal based on the first PUCCH common resource.

[0057] Optionally, the base station can also broadcast a second SIB1 through PDSCH, and the second SIB1 is used to determine the second resource information of the second PUCCH common resource when the ground terminal initially accesses the ground logical cell. The second resource information includes: the third PRB index of the first hop of the ground terminal's second PUCCH common resource transmission information, the fourth PRB index of the second hop, and the second initial cyclic shift index.

[0058] Specifically, the ground terminal can determine the second resource information in the following manner.

[0059] First, the index information of the second PUCCH common resource is calculated by the following formula:

[0060]

[0061] In the formula, r PUCCH2 represents the index of the second PUCCH common resource, N CCE2 is the number of CCEs in the second CORESET, n CCE2,0 is the index of the first CCE in the second CORESET, Δ PRI2 is the value of the second PRI.

[0062] exist When the second initial cyclic shift index can be determined as The third PRB index is The fourth PRB index is

[0063] exist When the second initial cyclic shift index can be determined as The third PRB index is The fourth PRB index is

[0064]

[0065] In the formula, is the PRB offset in the initial uplink bandwidth of the second SIB1 configuration, is the number of PRBs in the initial uplink bandwidth of the second SIB1 configuration.

[0066] Afterwards, the base station can receive a second HARQ-ACK message transmitted by the ground terminal based on the second PUCCH common resources.

[0067] In an embodiment of the present application, a physical cell is configured as two logical cells, one for the air and the other for the ground. Separate SSBs are defined for them on the same carrier. The two SSBs have the same bandwidth and center frequency, and are sent at intervals of preset integer frames. The same frequency networking of the air network and the ground network can be achieved without adding new carrier resource configurations. The two logical cells share the PUCCH common resources, and through semi-static configuration of the PUCCH common resources of the two, the terminals can be staggered in the time domain, frequency domain, and code domain to avoid collisions. The present application effectively solves the technical problem that the relevant air-ground integrated base station sends the air beam and the ground beam at the same time, which will cause interference between the two.

[0068] Example 2

[0069] Based on the wireless communication system provided in Example 1, the embodiment of the present application also provides an air-to-ground co-frequency networking communication method implemented by a base station. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0070] Figure 2 is a flow chart of an air-to-ground co-frequency networking communication method provided according to an embodiment of the present application, such as Figure 2 As shown, the method comprises the following steps:

[0071] Step S202, configuring a first SSB corresponding to the air logical cell and a second SSB corresponding to the ground logical cell on the target carrier, and configuring a first SIB1 associated with the first SSB and a second SIB1 associated with the second SSB, wherein the air logical cell and the ground logical cell are the same physical cell;

[0072] Step S204, periodically broadcasting the first SSB and the second SSB, wherein the bandwidth and the center frequency of the first SSB and the second SSB are the same, the GSCN are different, and the transmission interval is a preset integer frame;

[0073] Step S206, broadcasting a first DCI and a second DCI through a PDCCH, wherein the first DCI includes scheduling information of the first SIB1, and the second DCI includes scheduling information of the second SIB1;

[0074] Step S208, broadcast the first SIB1 and the second SIB1 through PDSCH, wherein the first SIB1 is used to determine the first resource information of the first PUCCH public resource when the air terminal initially accesses the air logical cell, and the second SIB1 is used to determine the second resource information of the second PUCCH public resource when the ground terminal initially accesses the ground logical cell.

[0075] The following describes the various steps of the air-to-ground co-frequency networking communication method in conjunction with a specific implementation process.

[0076] As an optional implementation, in order to achieve co-frequency networking of air networks and ground networks without adding new carrier resource configuration, the embodiment of the present application logically divides a physical cell into an air cell and a ground cell, wherein the PCI of the air logical cell and the ground logical cell can be configured to be the same or different, but the NCGI of the two must be configured to be different.

[0077] Optionally, a corresponding first SSB may be configured for the air logical cell and a corresponding second SSB may be configured for the ground logical cell on the target carrier, and the target carrier may be a 100M single carrier resource commonly used in 5G NR. When configuring the first SSB and the second SSB, the bandwidth and center frequency of the two may be the same, the GSCN may be different, and the transmission interval may be set to a preset integer frame.

[0078] Optionally, the base station can also configure the first SIB1 associated with the first SSB and the second SIB1 associated with the second SSB in the following manner: respectively configure the pucch-ResourceCommon field in the pucch-ConfigCommon field in the first SIB1 and the second SIB1, wherein the pucch-ResourceCommon field includes: the format of PUCCH, the first symbol position and duration in the time domain, the PRB offset in the initial uplink bandwidth in the frequency domain, and the initial cyclic shift index set.

[0079] After the relevant information is configured, the base station can periodically broadcast the first SSB and the second SSB. The broadcast periods of the two are the same and they are sent at a preset integer frame interval in time. Optionally, when broadcasting SSB, the number of air beams and ground beams can be configured independently. Specifically, the first SSB can be broadcast using a first preset number of air beams, and the second SSB can be broadcast using a second preset number of ground beams. Among them, the first preset number can be flexibly configured based on the requirements of low-altitude economic three-dimensional coverage networking, such as 3-7 air beams, and the second preset number can refer to the existing network configuration, such as 7 ground beams.

[0080] Optionally, the base station may broadcast the first DCI and the second DCI through the PDCCH. Specifically, the base station may broadcast the first DCI based on the first CORESET corresponding to the first PDCCH, wherein the first DCI includes a first PRI of a preset number of bits corresponding to the first PUCCH common resource; and may broadcast the second DCI based on the second CORESET corresponding to the second PDCCH, wherein the second DCI includes a second PRI of a preset number of bits corresponding to the second PUCCH common resource.

[0081] In order to avoid collisions in the initial access phase of the terminal while allowing the air-to-air logical cell and the ground-to-ground logical cell to share the PUCCH common resources, the embodiment of the present application defines the first PRI and the second PRI differently, so that their highest bits are different. For example, the above-mentioned preset number of bits is 3 bits, that is, the first PRI and the second PRI are both 3 bits, and the highest bit of the first PRI can be set to always be 1, and the highest bit of the second PRI can be set to always be 0, so that the air-to-air logical cell and the ground-to-ground logical cell each occupy half of the PUCCH common resources, and are far apart in the frequency domain, each occupying both ends of the initial bandwidth.

[0082] Optionally, the base station can broadcast a first SIB1 via PDSCH, where the first SIB1 is used to determine first resource information of a first PUCCH common resource when the air terminal initially accesses an air logical cell, where the first resource information includes: a first PRB index of the first hop of the air terminal's transmission of information on the first PUCCH common resource, a second PRB index of the second hop, and a first initial cyclic shift index.

[0083] Specifically, the air terminal may determine the first resource information in the following manner.

[0084] First, the index information of the first PUCCH common resource is calculated by the following formula:

[0085]

[0086] In the formula, r PUCCH1 represents the index of the first PUCCH common resource, N CCE1 is the number of CCEs in the first CORESET, n CCE1,0 is the index of the first CCE in the first CORESET, Δ PRI1 is the value of the first PRI.

[0087] exist When , the first initial cyclic shift index can be determined as The first PRB index is The second PRB index is

[0088] exist When , the first initial cyclic shift index can be determined as The first PRB index is The second PRB index is

[0089]

[0090] In the formula, is the PRB offset in the initial uplink bandwidth of the first SIB1 configuration, is the number of PRBs in the initial uplink bandwidth of the first SIB1 configuration.

[0091] Afterwards, the base station may receive a first HARQ-ACK message transmitted by the air terminal based on the first PUCCH common resource.

[0092] Optionally, the base station can also broadcast a second SIB1 through PDSCH, and the second SIB1 is used to determine the second resource information of the second PUCCH common resource when the ground terminal initially accesses the ground logical cell. The second resource information includes: the third PRB index of the first hop of the ground terminal's second PUCCH common resource transmission information, the fourth PRB index of the second hop, and the second initial cyclic shift index.

[0093] Specifically, the ground terminal can determine the second resource information in the following manner.

[0094] First, the index information of the second PUCCH common resource is calculated by the following formula:

[0095]

[0096] In the formula, r PUCCH2 represents the index of the second PUCCH common resource, N CCE2 is the number of CCEs in the second CORESET, n CCE2,0 is the index of the first CCE in the second CORESET, Δ PRI2 is the value of the second PRI.

[0097] exist When the second initial cyclic shift index can be determined as The third PRB index is The fourth PRB index is

[0098] exist When the second initial cyclic shift index can be determined as The third PRB index is The fourth PRB index is

[0099]

[0100] In the formula, is the PRB offset in the initial uplink bandwidth of the second SIB1 configuration, is the number of PRBs in the initial uplink bandwidth of the second SIB1 configuration.

[0101] Afterwards, the base station can receive a second HARQ-ACK message transmitted by the ground terminal based on the second PUCCH common resources.

[0102] In an embodiment of the present application, a physical cell is configured as two logical cells, one for the air and the other for the ground. Separate SSBs are defined for them on the same carrier. The two SSBs have the same bandwidth and center frequency, and are sent at intervals of preset integer frames. The same frequency networking of the air network and the ground network can be achieved without adding new carrier resource configurations. The two logical cells share the PUCCH common resources, and through semi-static configuration of the PUCCH common resources of the two, the terminals can be staggered in the time domain, frequency domain, and code domain to avoid collisions. The present application effectively solves the technical problem that the relevant air-ground integrated base station sends the air beam and the ground beam at the same time, which will cause interference between the two.

[0103] Example 3

[0104] According to an embodiment of the present application, a computer program product is also provided, which includes a computer program, wherein when the computer program is executed by a processor, the air-to-ground co-frequency networking communication method in Example 2 is implemented.

[0105] According to an embodiment of the present application, a non-volatile storage medium is also provided, which includes a stored computer program, wherein the device where the non-volatile storage medium is located executes the air-to-ground co-frequency networking communication method in Example 2 by running the computer program.

[0106] According to an embodiment of the present application, a processor is also provided, which is used to run a computer program, wherein the air-to-ground co-frequency networking communication method in Example 2 is executed when the computer program is running.

[0107] According to an embodiment of the present application, an electronic device is also provided, which includes: a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to execute the air-to-ground co-frequency networking communication method in Example 2 through the computer program.

[0108] Specifically, when the computer program is running, the following steps are executed: configuring a first SSB corresponding to an air logical cell and a second SSB corresponding to a ground logical cell on a target carrier, and configuring a first SIB1 associated with the first SSB and a second SIB1 associated with the second SSB, wherein the air logical cell and the ground logical cell are the same physical cell; periodically broadcasting the first SSB and the second SSB, wherein the bandwidth and the center frequency of the first SSB and the second SSB are the same, and the sending interval is a preset integer frame; broadcasting the first DCI and the second DCI through the PDCCH, wherein the first DCI includes scheduling information of the first SIB1, and the second DCI includes scheduling information of the second SIB1; broadcasting the first SIB1 and the second SIB1 through the PDSCH, wherein the first SIB1 is used to determine the first resource information of the first PUCCH public resource when the air terminal initially accesses the air logical cell, and the second SIB1 is used to determine the second resource information of the second PUCCH public resource when the ground terminal initially accesses the ground logical cell.

[0109] As an optional implementation, the electronic device may be in the form of a mobile terminal, a computer terminal or a similar computing device. Figure 3 The hardware structure block diagram of an electronic device for implementing the air-to-ground co-frequency networking communication method is shown. Figure 3As shown, the electronic device 30 may include one or more (302a, 302b, ..., 302n are used to illustrate) processors 302 (the processor 302 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 304 for storing data, and a transmission device 306 for communication functions. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the BUS bus), a network interface, a power supply and / or a camera. It can be understood by those skilled in the art that Figure 3 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 3 More or fewer components as shown, or with Figure 3 Different configurations shown.

[0110] It should be noted that the one or more processors 302 and / or other data processing circuits described above may generally be referred to herein as "data processing circuits". The data processing circuits may be embodied in whole or in part as software, hardware, firmware, or any other combination thereof. In addition, the data processing circuit may be a single independent processing module, or may be incorporated in whole or in part into any of the other components in the electronic device 30. As described in the embodiments of the present application, the data processing circuit acts as a processor control (e.g., selection of a variable resistor terminal path connected to an interface).

[0111] The memory 304 can be used to store software programs and modules of application software, such as the program instructions / data storage device corresponding to the air-ground co-frequency networking communication method in the embodiment of the present application. The processor 302 executes various functional applications and data processing by running the software programs and modules stored in the memory 304, that is, to implement the vulnerability detection method of the above-mentioned application. The memory 304 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 304 may further include a memory remotely arranged relative to the processor 302, and these remote memories may be connected to the electronic device 30 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0112] The transmission device 306 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the electronic device 30. In one example, the transmission device 306 includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 306 can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0113] The display may be, for example, a touch screen liquid crystal display (LCD) that enables a user to interact with a user interface of the electronic device 30 .

[0114] The serial numbers of the above embodiments are only for description and do not represent the advantages or disadvantages of the embodiments.

[0115] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0116] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0117] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed over multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0118] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0119] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or all or part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of each embodiment method of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc. Various media that can store program codes.

[0120] The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for air-ground co-frequency networking communication, applied to a base station, characterized in that: include: Configure, on the target carrier, a first synchronization signal block SSB corresponding to the air logical cell and a second SSB corresponding to the ground logical cell, and configure a first type-1 system information block SIB1 associated with the first SSB and a second SIB1 associated with the second SSB, wherein the air logical cell and the ground logical cell are the same physical cell; periodically broadcasting the first SSB and the second SSB, wherein the first SSB and the second SSB have the same bandwidth and central frequency, different global synchronization channel numbers GSCN, and a transmission interval is a preset integer frame; Broadcasting first downlink control information DCI and second DCI through a physical downlink control channel PDCCH, wherein the first DCI includes scheduling information of the first SIB1, and the second DCI includes scheduling information of the second SIB1; The first SIB1 and the second SIB1 are broadcasted via the physical downlink shared channel PDSCH, wherein the first SIB1 is used to determine first resource information of a first physical uplink control channel PUCCH common resource when an air terminal initially accesses the air logical cell, and the second SIB1 is used to determine second resource information of a second PUCCH common resource when a ground terminal initially accesses the ground logical cell.

2. The method according to claim 1, characterized in that The physical cell identifiers PCIs of the air logical cell and the ground logical cell are configured to be the same or different; The network cell global identifier NCGI of the air-related logical cell and the ground-related logical cell are configured to be different.

3. The method according to claim 1, characterized in that Configuring a first SIB1 associated with the first SSB and a second SIB1 associated with the second SSB includes: Configure the physical uplink control channel common resource pucch-ResourceCommon field in the physical uplink control channel common configuration pucch-ConfigCommon field in the first SIB1 and the second SIB1 respectively, wherein the pucch-ResourceCommon field includes: the format of PUCCH, the first symbol position and duration in the time domain, the physical resource block PRB offset in the initial uplink bandwidth in the frequency domain, and the initial cyclic shift index set.

4. The method according to claim 1, characterized in that: Periodically broadcasting the first SSB and the second SSB includes: The first SSB is broadcast periodically using a first preset number of air beams, and the second SSB is broadcast using a second preset number of ground beams.

5. The method according to claim 1, characterized in that The first DCI and the second DCI are broadcasted through the PDCCH, including: Broadcast the first DCI based on the first control resource set CORESET corresponding to the first PDCCH, wherein the first DCI includes a first physical uplink control channel resource indication PRI of a preset number of bits corresponding to the first PUCCH common resource; The second DCI is broadcast based on the second CORESET corresponding to the second PDCCH, wherein the second DCI includes a second PRI of the preset number of bits corresponding to the second PUCCH common resource, and the highest bits of the first PRI and the second PRI are different.

6. The method according to claim 5, characterized in that The first resource information includes: a first PRB index of the first hop of the first PUCCH common resource transmission information of the air terminal, a second PRB index of the second hop, and a first initial cyclic shift index; Among them, When the first initial cyclic shift index is The first PRB index is The second PRB index is exist When the first initial cyclic shift index is The first PRB index is The second PRB index is In the formula, r PUCCH1 represents the index of the first PUCCH common resource, N CCE1 is the number of control channel elements CCE in the first CORESET, n CCE1,0 is the index of the first CCE in the first CORESET, Δ PRI1 is the value of the first PRI, N CS1 is the number of initial cyclic shift indices in the initial cyclic shift index set of the first SIB1 configuration, is the PRB offset in the initial uplink bandwidth of the first SIB1 configuration, is the number of PRBs in the initial uplink bandwidth configured by the first SIB1; The second resource information includes: a third PRB index of the first hop of the second PUCCH common resource transmission information of the ground terminal, a fourth PRB index of the second hop, and a second initial cyclic shift index; Among them, When the second initial cyclic shift index is The third PRB index is The fourth PRB index is exist When the second initial cyclic shift index is The third PRB index is The fourth PRB index is In the formula, r PUCCH2 represents the index of the second PUCCH common resource, N CCE2 is the number of CCEs in the second CORESET, n CCE2,0 is the index of the first CCE in the second CORESET, Δ PRI2 is the value of the second PRI, N CS2 is the number of initial cyclic shift indices in the initial cyclic shift index set of the second SIB1 configuration, is the PRB offset in the initial uplink bandwidth of the second SIB1 configuration, It is the number of PRBs in the initial uplink bandwidth configured by the second SIB1.

7. The method according to claim 1, characterized in that After broadcasting the first SIB1 and the second SIB1 through the PDSCH, the method further includes: Receiving a first hybrid automatic repeat request confirmation HARQ-ACK message transmitted by the air terminal based on the first PUCCH common resource; and / or, Receive a second HARQ-ACK message transmitted by the ground terminal based on the second PUCCH common resource.

8. A wireless communication system, characterized in that: include: Base stations, aerial terminals and ground terminals, among which, The base station is used to configure a first SSB corresponding to an air logical cell and a second SSB corresponding to a ground logical cell on a target carrier, and configure a first SIB1 associated with the first SSB and a second SIB1 associated with the second SSB, wherein the air logical cell and the ground logical cell are the same physical cell; periodically broadcast the first SSB and the second SSB, wherein the bandwidth and center frequency of the first SSB and the second SSB are the same, the GSCN is different, and the sending interval is a preset integer frame; broadcast the first DCI and the second DCI through the PDCCH, wherein the first DCI includes scheduling information of the first SIB1, and the second DCI includes scheduling information of the second SIB1; broadcast the first SIB1 and the second SIB1 through the PDSCH, wherein the first SIB1 is used to determine the first resource information of the first PUCCH common resource when the air terminal initially accesses the air logical cell, and the second SIB1 is used to determine the second resource information of the second PUCCH common resource when the ground terminal initially accesses the ground logical cell.

9. A computer program product, characterized in that include: A computer program, wherein when the computer program is executed by a processor, it implements the air-to-ground co-frequency networking communication method described in any one of claims 1 to 7.

10. An electronic device, characterized in that: include: A memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the air-to-ground co-frequency networking communication method described in any one of claims 1 to 7 through the computer program.

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