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

Abstract

The application discloses an air-ground same-frequency networking communication method and a wireless communication system. The method comprises the following steps: configuring a first SSB corresponding to an air cell, a second SSB corresponding to a ground cell, a first SIB1 associated with the first SSB and a second SIB1 associated with the second SSB on a target carrier; periodically broadcasting the first SSB and the second SSB, wherein the bandwidth and the center frequency point 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 a first DCI comprising first SIB1 scheduling information and a second DCI comprising second SIB1 scheduling information through a PDCCH; and broadcasting the first SIB1 used for determining the resource information of the PUCCH common resource when the air terminal initially accesses the air cell and the second SIB1 used for determining the resource information of the PUCCH common resource when the ground terminal initially accesses the ground cell through a PDSCH. The application solves the technical problem that the air-ground integrated base station simultaneously transmits the air beam and the ground beam, and the air beam and the ground beam will interfere with each other.

Description

Technical Field

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

[0002] The low-altitude economy is currently experiencing rapid growth, with drones being widely used in a variety of civilian sectors, including consumer entertainment, logistics and transportation, agricultural meteorology, industrial production, geo-energy, and smart cities, demonstrating advantages such as increased efficiency and reduced costs. However, with the rapid increase in the number of drones and their widespread application, there is an urgent need to build a low-altitude information network that covers low altitudes to ensure real-time transmission of drone flight control information and business data communication services. Traditional cellular mobile networks primarily focus on covering ground terminals, while low-altitude information networks require three-dimensional coverage of the airspace. In particular, low-altitude information networks require three-dimensional coverage of the airspace, which differs significantly from traditional two-dimensional ground-based coverage. Furthermore, since existing cellular base stations already provide continuous ground coverage, achieving three-dimensional coverage of the low-altitude airspace based on cellular mobile base stations without compromising continuous ground coverage has become a critical issue.

[0003] If the air-to-ground network and the ground-to-air network use different frequencies, two cellular mobile base station networks with different carriers will need to be deployed, resulting in high construction costs. However, if the air-to-ground network and the ground-to-air network use the same frequency, given the upper and lower sidelobes of the base station antenna's radiation when transmitting signals, the upper sidelobes of the base station antenna's ground-to-air beam will be transmitted into the air, while the lower sidelobes of the base station antenna's air-to-ground beam will be transmitted into the ground, resulting in co-frequency interference between the air-to-ground and ground-to-air networks.

[0004] To address the above-mentioned problems, no effective solutions have been proposed so far. Summary of the Invention

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

[0006] According to one aspect of an embodiment of the present application, a method for air-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 are 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 first resource information of a first 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.

[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 the 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 resource; 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 resource, and the highest bits of the first PRI and the second PRI are different.

[0011] Optionally, the first resource information includes: the first PRB index of the first hop of the first PUCCH common resource transmission information, the second PRB index of the second hop, and the first initial cyclic shift index of the air terminal; 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 Where 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, 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 Where 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 of 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 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 are 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.

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

[0015] According to another aspect of an embodiment of the present application, an electronic device is further 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-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 one 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. This allows for co-frequency networking of air and ground networks without adding new carrier resource configurations. The two logical cells share PUCCH common resources, and by semi-statically configuring their PUCCH common resources, terminals can be staggered in the time, frequency, and code domains to avoid collisions. This application effectively solves the technical problem that related air-ground integrated base stations send air beams and ground beams simultaneously, which can cause interference. 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 structural diagram of an optional wireless communication system according to an embodiment of the present application;

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

[0020] Figure 3 It is a schematic structural diagram 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 present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this 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 sequential order. 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 variations thereof 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 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 location number used to identify the 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: 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): is an information block in 5G NR that transmits network control information, including configuration information of the cell, etc. SIB1 is the most important SIB, which contains the key information required for terminal access to the cell, such as cell selection and reselection criteria, connection establishment failure control, SI scheduling information, etc. In addition, SIB1 also provides availability and scheduling information of other system information blocks (SIB2 and later).

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

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

[0030] DCI: is important control information used for scheduling physical resources, which can indicate resource allocation of PDSCH and PUSCH (Physical Uplink Shared Channel) and other physical channels. 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 when scheduling PUSCH to tell the terminal which PUCCH resource to use to send the corresponding uplink control information.

[0031] CORESET (Control Resource Set): is a specific physical resource set in 5G NR that carries PDCCH, which 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: is the main physical channel for transmitting uplink data in 5G NR, which is responsible for transmitting data from user equipment to the base station.

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

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

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

[0037] Embodiment 1

[0038] According to the embodiments of the present application, a wireless communication system is first provided, as shown in Figure 1 The system includes at least a base station 11, an air terminal 12 and a ground terminal 13, wherein the air terminal 12 can be a drone or other device, and the ground terminal 13 can be a mobile communication device such as a mobile phone or 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 center frequency of the first SSB and the second SSB are the same, the GSCN are 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 common 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 common resource when the ground terminal 13 initially accesses the ground logical cell.

[0040] The communication process of the wireless communication system is described below with reference to specific implementations.

[0041] As an optional implementation method, in order to realize the same-frequency networking of the air network and the ground network 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 first SSB corresponding to the air-to-air logical cell and a second SSB corresponding to the ground-to-ground logical cell can be configured on the target carrier. The target carrier can be a 100 MHz single-carrier resource commonly used in 5G NR. When configuring the first and second SSBs, the bandwidth and center frequency can be the same, but the GSCN can be different, and the transmission interval can be set to a preset integer number of frames.

[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 intervals of a preset integer number of frames. Optionally, when broadcasting SSBs, 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. 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 via 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] To enable the air-to-ground logical cell and the ground-to-ground logical cell to share PUCCH common resources while avoiding collisions during the initial access phase of a terminal, the present embodiment defines the first PRI and the second PRI differently, making their most significant bits different. For example, the aforementioned preset number of bits is 3, meaning both the first PRI and the second PRI are 3 bits. The most significant bit of the first PRI can be set to always be 1, and the most significant bit of the second PRI can be set to always be 0. In this way, the air-to-ground logical cell and the ground-to-ground logical cell each occupy half of the PUCCH common resources, and are separated by a large frequency domain distance, occupying both ends of the initial bandwidth.

[0047] Optionally, the base station can broadcast a first SIB1 through PDSCH, and 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. The first resource information includes: the first PRB index of the first hop of the air terminal in the first PUCCH common resource transmission information, the second PRB index of the second hop, and the 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 using the following formula:

[0050]

[0051] Where r PUCCH1 Indicates 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 to be The first PRB index is The second PRB index is

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

[0054]

[0055] Where, 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.

[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 may determine the second resource information in the following manner.

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

[0060]

[0061] Where r PUCCH2 Indicates 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] Where, 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 the 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 one 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. This allows for co-frequency networking of air and ground networks without adding new carrier resource configurations. The two logical cells share PUCCH common resources, and by semi-statically configuring their PUCCH common resources, terminals can be staggered in the time, frequency, and code domains to avoid collisions. This application effectively solves the technical problem that related air-ground integrated base stations send air beams and ground beams simultaneously, which can cause interference.

[0068] Example 2

[0069] Based on the wireless communication system provided in Example 1, the embodiment of the present application also provides an air-ground co-frequency networking communication method implemented by a base station. It should be noted that the steps shown in the flowchart of 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 here.

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

[0071] Step S202: Configure a first SSB corresponding to the air logical cell and a second SSB corresponding to the ground logical cell on the 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.

[0072] Step S204: periodically broadcast the first SSB and the second SSB, wherein the first SSB and the second SSB have the same bandwidth and center frequency, but different GSCNs, and the transmission interval is a preset integer frame.

[0073] Step S206: broadcasting a first DCI and a second DCI via the 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-ground co-frequency networking communication method in conjunction with a specific implementation process.

[0076] As an optional implementation method, in order to realize the same-frequency networking of the air network and the ground network 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 first SSB corresponding to the air-to-air logical cell and a second SSB corresponding to the ground-to-ground logical cell can be configured on the target carrier. The target carrier can be a 100 MHz single-carrier resource commonly used in 5G NR. When configuring the first and second SSBs, the bandwidth and center frequency can be the same, but the GSCN can be different, and the transmission interval can be set to a preset integer number of frames.

[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 by 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 the PUCCH, the first symbol position and the 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 related information is configured, the base station can periodically broadcast the first SSB and the second SSB, and the broadcasting periods of the two are the same and are separated by a preset integer frame in time. Optionally, when broadcasting the SSB, the number of the skyward beam and the groundward beam can be independently configured, and specifically, the first SSB can be broadcasted by using the first preset number of skyward beams, and the second SSB can be broadcasted by using the second preset number of groundward beams. Wherein, the first preset number can be flexibly configured based on the requirements of low-altitude economic three-dimensional coverage networking, such as 3-7 skyward beams, and the second preset number can be configured with reference to the existing network, such as 7 groundward beams.

[0080] Optionally, the base station can broadcast the first DCI and the second DCI through the PDCCH. Specifically, the base station can 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 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 collision of the terminal initial access stage while the skyward logical cell and the groundward logical cell share the PUCCH common resource, the first PRI and the second PRI are defined differently in the embodiments of the present application, and the highest bit is not the same. 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, 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 skyward logical cell and the groundward logical cell each occupy half of the PUCCH common resource, and are far apart from each other in the frequency domain, each occupying both ends of the initial bandwidth.

[0082] Optionally, the base station can broadcast the first SIB1 through the PDSCH, and the first SIB1 is used to determine the first resource information of the first PUCCH common resource when the terminal in the sky initially accesses the skyward logical cell, and the first resource information includes: the first PRB index of the first hop, the second PRB index of the second hop, and the first initial cyclic shift index of the terminal in the sky transmitting information in the first PUCCH common resource.

[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 using the following formula:

[0085]

[0086] Where r PUCCH1 Indicates 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 to be The first PRB index is The second PRB index is

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

[0089]

[0090] Where, 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.

[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 may determine the second resource information in the following manner.

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

[0095]

[0096] Where r PUCCH2 Indicates 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] Where, 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 the 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 one 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. This allows for co-frequency networking of air and ground networks without adding new carrier resource configurations. The two logical cells share PUCCH common resources, and by semi-statically configuring their PUCCH common resources, terminals can be staggered in the time, frequency, and code domains to avoid collisions. This application effectively solves the technical problem that related air-ground integrated base stations send air beams and ground beams simultaneously, which can cause interference.

[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, it implements the air-ground co-frequency networking communication method in Example 2.

[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-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-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-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 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 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.

[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 an air-ground co-frequency networking communication method is shown. Figure 3As shown, the electronic device 30 may include one or more (illustrated as 302a, 302b, ..., 302n in the figure) 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 will 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 than 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 circuitry". The data processing circuitry may be embodied in whole or in part as software, hardware, firmware, or any other combination thereof. In addition, the data processing circuitry may be a single independent processing module, or may be incorporated in whole or in part into any of the other components of the electronic device 30. As described in the embodiments of the present application, the data processing circuitry serves as a processor control (e.g., selection of a variable resistor terminal path connected to an interface).

[0111] Memory 304 can be used to store software programs and modules for application software, such as the program instructions / data storage device corresponding to the air-ground co-frequency networking communication method in the embodiments of the present application. Processor 302 executes the software programs and modules stored in memory 304 to perform various functional applications and data processing, thereby implementing the aforementioned application vulnerability detection method. Memory 304 may include high-speed random access memory (RAM) and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, memory 304 may further include memory remotely located relative to processor 302, and such remote memory may be connected to electronic device 30 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0112] The transmission device 306 is configured to receive or send data via a network. The network can include a wireless network provided by a communication provider of the electronic device 30. In one embodiment, the transmission device 306 includes a network interface controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet. In one embodiment, the transmission device 306 can be a radio frequency (RF) module that is configured to communicate with the Internet wirelessly.

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

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

[0115] In the above-mentioned embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0116] In the several embodiments provided by the present application, it should be understood that the disclosed technology can be implemented in other ways. Of course, the unit embodiment described above is only schematic. For example, the division of the units can be a logical function division, and there can be another division manner in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some interfaces, units or modules, and can be electrical or other forms.

[0117] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

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

[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 is essentially 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, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the various embodiments 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, magnetic disk or optical disk and other media that can store program code.

[0120] The above is only a preferred embodiment 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 broadcast the first SSB and the second SSB, wherein the first SSB and the second SSB have the same bandwidth and center frequency, different global synchronization channel numbers GSCN, and are transmitted at a preset integer frame interval; 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-facing logical cell and the ground-facing logical cell are configured to be the same or different; The network cell global identifier (NCGI) of the air-facing logical cell and the ground-facing 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, wherein Periodically broadcasting the first SSB and the second SSB includes: The first SSB is periodically broadcast 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, wherein Broadcasting the first DCI and the second DCI through the PDCCH includes: Broadcasting 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 with a preset number of bits corresponding to the first PUCCH common resource; The second DCI is broadcast based on a second CORESET corresponding to a 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 Where 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: the third PRB index of the first hop of the ground terminal transmitting information on the second PUCCH common resource, the fourth PRB index of the second hop, and the 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 Where 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, 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, air 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 are 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 according to any one of claims 1 to 7 through the computer program.

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