Spectrum sharing between terrestrial networks with interference control and non-terrestrial networks

Abstract

Solutions are proposed related to spectrum sharing between a terrestrial network (TN) with interference control and a non-terrestrial network (NTN). A device implemented in a UE communicates with a non-terrestrial (NT) network node of the NTN by sharing resources with the TN. One or both of a directional gain and a directional transmit power relative to a network node of the TN are required such that interference between TN downlink (DL) transmissions and NTN uplink (UL) transmissions is less than a threshold.

Description

[0001] Cross-referencing of related patent applications

[0002] This disclosure is part of a non-provisional application claiming priority to U.S. Provisional Patent Application No. 63 / 118,033, filed November 25, 2020, which is incorporated herein by reference in its entirety. Technical Field

[0003] This disclosure relates generally to mobile communications, and more specifically to spectrum sharing between terrestrial networks (TN) and non-terrestrial networks (NTN) with interference control. Background Technology

[0004] Unless otherwise stated herein, the solutions described in this section are not prior art to the claims listed below, and are not recognized as prior art by way of inclusion in this section.

[0005] In wireless communications such as mobile communications pursuant to the 3rd Generation Partnership Project (3GPP) specifications, spectrum sharing refers to two systems sharing the same carrier. For example, in the context of TN-NTN spectrum sharing, the TN can reuse the same spectrum used by the NTN. This can free up a significant amount of spectrum for TN reuse. However, one challenge is TN-to-NTN interference. Additionally, it is worth noting that the power of NTN satellites on the ground tends to be relatively low. That is, for most UEs located within TN coverage, the NTN (e.g., satellite) power reaching the TN user equipment (UE) is typically very low (e.g., close to the thermal noise floor). NTN UEs are expected to be outside TN coverage, therefore the interference level from NTN UEs on the TN network tends to be lower. On the other hand, a major challenge is TN interference on uplink (UL) transmissions from NTN UEs to satellites. Because satellite beams can cover large areas, the total TN interference on NTN UL transmissions can be very high. Furthermore, due to geographical separation, TN interference on downlink (DL) transmissions to NTN UEs tends to be less of a problem. Therefore, a solution is needed for spectrum sharing between TN and NTN with interference control to address the above problems. Summary of the Invention

[0006] The following overview is illustrative only and is not intended to be limiting in any way. That is, it is provided to introduce the concept, key points, benefits, and advantages of the novel and non-obvious techniques described herein. The chosen implementations are further described in the detailed description below. Therefore, the following overview is not intended to identify the essential features of the claimed subject matter, nor is it intended to determine the scope of the claimed subject matter.

[0007] The purpose of this disclosure is to provide solutions or schemes for addressing the aforementioned problems. More specifically, the various schemes proposed in this disclosure relate to spectrum sharing between TN and NTN networks with interference control.

[0008] In one aspect, a method may include the UE communicating with a non-terrestrial (NT) network node of the NTN by sharing resources with the TN. There may be requirements for one or both of directional gain and directional transmit power relative to the TN network node, such that interference between TN DL transmissions and NTN UL transmissions is less than a threshold.

[0009] In another aspect, one method may include a processor of a TN network node communicating with at least one UE by sharing resources with the NTN. There may be requirements for one or both of the directional gain and directional transmit power of the network node relative to the TN, such that interference between TN DL transmissions and NTN UL transmissions is less than a threshold.

[0010] It is worth noting that while the descriptions provided herein can be understood in the context of certain radio access technologies, networks, and network topologies such as TN and NTN, the proposed ideas, schemes, and any variations / derivatives thereof can be implemented in, or by, other types of radio access technologies, networks, and network topologies, such as, but not limited to, Long Term Evolution (LTE), LTE Advanced, LTE Advanced Pro, 5G, New Radio (NR), Internet of Things (IoT), Narrowband Internet of Things (NB-IoT), and Industrial Internet of Things (IIoT). Therefore, the scope of this disclosure is not limited to the examples described herein. Attached Figure Description

[0011] The accompanying drawings are included to provide a further understanding of this disclosure and are incorporated in and constitute a part of this disclosure. The drawings illustrate implementations of this disclosure and, together with the specification, serve to explain the principles of this disclosure. It will be understood that the drawings are not necessarily to scale, as some components may be shown out of proportion to their actual dimensions in order to clearly illustrate the concepts of this disclosure.

[0012] Figure 1 This is a diagram illustrating an example scenario based on the proposed solution of this disclosure.

[0013] Figure 2 This is a diagram illustrating an example scenario based on the proposed solution of this disclosure.

[0014] Figure 3 This is a block diagram of an example communication system implemented according to this disclosure.

[0015] Figure 4This is a flowchart illustrating an example of processing based on an implementation of this disclosure.

[0016] Figure 5 This is a flowchart illustrating an example of processing based on an implementation of this disclosure. Detailed Implementation

[0017] Detailed embodiments and implementations of the claimed subject matter are disclosed herein. However, it should be understood that the disclosed embodiments and implementations are merely illustrative of the claimed subject matter, which can be embodied in various forms. This disclosure can be implemented in many different forms and should not be construed as limited to the exemplary embodiments and implementations set forth herein. Rather, these exemplary embodiments and implementations are provided to make the description of this disclosure thorough and complete, and to fully convey the scope of this disclosure to those skilled in the art. In the following description, details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations.

[0018] Overview

[0019] Implementations of this disclosure relate to various techniques, methods, schemes, and / or solutions related to spectrum sharing between TN and NTN with interference control. According to this disclosure, multiple possible solutions can be implemented individually or in combination. That is, although these possible solutions may be described individually below, two or more of these possible solutions may be implemented in one combination or another.

[0020] Figure 1 Example scenario 100 is illustrated under the proposed scheme for interference control for reverse pairing according to this disclosure. Under the proposed scheme, in reverse pairing of DL and UL transmissions between TN and NTN, NTN DL transmissions and TN UL transmissions can share the same resources. Conversely, NTN UL transmissions and TN DL transmissions can share the same resources. Resources may include time resources (e.g., frames, time slots, symbols, etc.) and / or frequency resources (e.g., bandwidth portions (BWP), resource blocks, frequency bands, etc.).

[0021] Figure 2 Example scenario 200 is illustrated under the proposed scheme for interference control in reverse pairing according to this disclosure. (Refer to...) Figure 2Interference from base stations (e.g., gNBs) to UL transmissions to satellites can be mitigated through one or more methods. In the first method, tilted antennas can be used at the base stations, and this can be accomplished as part of network planning. In the second method, fan-shaped antennas are utilized, keeping the signal radiated into the sky very low, and this can also be accomplished as part of network planning. In the third method, the linear polarization direction reaching the satellite can be kept relatively the same for all base stations (e.g., all antennas remain nearly vertical). Advantageously, this method allows for more effective cancellation at the base stations.

[0022] Under the proposed interference control scheme for reverse pairing according to this disclosure, various options exist to ensure low interference (e.g., less than a threshold) between TN DL transmissions and NTN UL transmissions, where the TN base station (e.g., gNB or transmit / receive point (TRP)) has directional gain and / or directional transmit power masking requirements. Under the proposed scheme, different requirements can be defined for different TRP power levels. Alternatively, different requirements can be defined for different TRP deployments (e.g., indoor vs. outdoor, micro vs. macro, and urban vs. rural). Alternatively, the directional gain and / or directional transmit power masking (e.g., Effective Isotropic Radiated Power (EIRP)) requirement can be defined at angles above the horizon exceeding a specified angle, such as requiring the EIRP to be below a specified value. Alternatively, for all angles above the horizon exceeding a specified angle, the directional gain and / or directional transmit power (e.g., EIRP) requirement can be defined using a continuous transmit mask, such as requiring the TRP EIRP to be below a specified EIRP value from that mask. Under the proposed scheme, the average TRP transmission (Tx) power per unit Earth surface (dBm / km) can be used. 2 Interference power can be limited by restrictions. Alternatively, restrictions can be imposed on different types of base station deployments (e.g., urban vs. rural, or micro vs. macro) or on base station density at different power levels.

[0023] Under the proposed scheme for polarization restrictions regarding reverse pairing according to this disclosure, restrictions on polarization direction and / or type can be implemented. For example, the use of vertically or horizontally polarized antennas can be restricted for TN base stations. Furthermore, TN base stations can be restricted to using left-hand circular polarization (LHCP) or right-hand circular polarization (RHCP). Polarization can help reduce interference when line-of-sight (LOS) interference between TN base station DL transmissions and NTN UL transmissions is the primary factor. For example, TN DL transmissions can utilize vertical polarization, while NTN UL receivers can utilize horizontally polarized antennas or a combination of LHCP and RHCP. Alternatively, TN DL transmissions can utilize RHCP, and NTN UL transmissions can utilize LHCP. When reflected (non-LOS) interference is the primary factor, TN DL transmissions and NTN UL receivers can use the same circular polarization (e.g., LHCP or RHCP). It is noteworthy that the reflection of LHCP is RHCP, and vice versa. Advantageously, this allows for spectrum reuse.

[0024] Descriptive implementation

[0025] Figure 3 An example communication system 300 with example device 310 and example device 320 according to an implementation of this disclosure is illustrated. Each of device 310 and device 320 can perform various functions to implement the schemes, techniques, processes and methods described herein related to spectrum sharing between TN and NTN with interference control, including the scenarios / schemes described above and the processes described below.

[0026] Device 310 may be part of an electronic device, which may be a UE (User Equipment), such as a portable or mobile device, wearable device, wireless communication device, or computing device. For example, device 310 may be implemented in a smartphone, smartwatch, personal digital assistant, digital camera, or computing device such as a tablet computer, laptop computer, or notebook computer. Device 310 may also be part of a machine-type device, which may be an IoT, NB-IoT, IIoT, or NTN device, such as a fixed or stationary device, home appliance, wired communication device, or computing device. For example, device 310 may be implemented in a smart thermostat, smart refrigerator smart door lock, wireless speaker, or home control center. Alternatively, device 310 may be implemented in the form of one or more integrated circuit (IC) chips, such as, but not limited to, one or more single-core processors, one or more multi-core processors, one or more Reduced Instruction Set Computing (RISC) processors, or one or more Complex Instruction Set Computing (CISC) processors. Device 310 may include... Figure 3At least some of the components shown, such as processor 312. Device 310 may also include one or more other components (e.g., internal power supply, display device, and / or user interface device) unrelated to the scheme proposed in this disclosure, and therefore, for simplicity and brevity, such components of device 310 are not included. Figure 3 It is shown in the image but not described below.

[0027] Device 320 may be part of an electronic device / station, which may be a network node such as a base station, small cell, router, gateway, or satellite. For example, device 320 may be implemented in an eNodeB in LTE, in a gNB in ​​5G, NR, IoT, NB-IoT, IIoT, or in a satellite in an NTN network. Alternatively, device 320 may be implemented as one or more IC chips, such as, but not limited to, one or more single-core processors, one or more multi-core processors, or one or more RISC or CISC processors. Device 320 may include... Figure 3 At least some of the components shown, such as processor 322. Device 320 may also include one or more other components (e.g., internal power supply, display device, and / or user interface device) unrelated to the scheme proposed in this disclosure, and therefore, for simplicity and brevity, such components of device 320 are not included. Figure 3 It is shown in the image but not described below.

[0028] In one aspect, each of processors 312 and 322 may be implemented as one or more single-core processors, one or more multi-core processors, one or more RISC processors, or one or more CISC processors. That is, although the singular term "processor" is used herein to refer to processors 312 and 322, in some implementations, each of processors 312 and 322 may include multiple processors, while in other implementations, it may include a single processor. In another aspect, each of processors 312 and 322 may be implemented in hardware (and optionally firmware) having electronic components, including, for example, but not limited to, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors, and / or one or more varactor diodes, configured and set to achieve a particular purpose according to this disclosure. In other words, in at least some implementations, each of processors 312 and 322 is a dedicated machine specifically designed, set up, and configured to perform a specific task, including spectrum sharing between TN and NTN using interference control, according to various implementations of this disclosure.

[0029] In some implementations, device 310 may further include a transceiver 316 coupled to processor 312 and capable of wirelessly transmitting and receiving data. In some implementations, device 310 may further include a memory 314 coupled to processor 312 and accessible by processor 312, where data is stored. In some implementations, device 320 may further include a transceiver 326 coupled to processor 322 and capable of wirelessly transmitting and receiving data. In some implementations, device 320 may further include a memory 324 coupled to processor 322 and accessible by processor 322, where data is stored. Therefore, devices 310 and 320 can wirelessly communicate with each other via transceiver 316 and transceiver 326, respectively.

[0030] Each of devices 310 and 320 can be a communication entity capable of communicating with each other using various schemes proposed according to this disclosure. To aid in better understanding, the following description of the operation, functionality, and capabilities of each of devices 310 and 320 is provided in the context of a mobile communication environment in which device 310 is implemented in or as a communication device or UE (e.g., NTN UE), and device 320 is implemented in or as a network node or base station (e.g., TRP or gNB) of a communication network (e.g., TN). It is also noteworthy that while the example implementations described below are provided in the context of mobile communication, they can also be implemented in other types of networks.

[0031] Under some proposed schemes of spectrum sharing between a TN and an NTN with interference control according to this disclosure, where device 310 is implemented in or as an NTN UE, and device 320 is implemented in or as a TN base station (e.g., TRP or gNB), processor 312 can communicate with the NT network node of the NTN via transceiver 316 through shared resources with the TN. It is required that either or both of the directional gain and directional transmit power relative to the TN network node are such that the interference between TN DL transmissions and NTN UL transmissions is less than a threshold.

[0032] Similarly, processor 322 can communicate with at least one UE (e.g., device 310) via transceiver 326 by sharing resources with NTN, wherein either or both of the directional gain and directional transmit power of the network node with respect to TN are required such that the interference between TN DL transmission and NTN UL transmission is less than a threshold.

[0033] In some implementations, at least one of directional gain and directional transmit power can be defined using a continuous transmit mask for all angles above the horizon beyond a specified angle. For example, the EIRP of a TN network node can be lower than a specified EIRP value derived from a continuous transmit mask.

[0034] In some implementations, this requirement may include the average network node Tx power (dBm / km) per unit Earth surface TN. 2 (restrictions)

[0035] In some implementations, this requirement may include restrictions on the antenna polarization used by the TN. For example, restrictions on the antenna polarization used by the TN may include limiting the TN network nodes (e.g., device 320 as a TRP of the TN) to using either vertically or horizontally polarized antennas. Alternatively or additionally, restrictions on the antenna polarization used by the TN may include limiting the TN network nodes (e.g., device 320 as a TRP of the TN) to using LHCP or RHCP. Alternatively or additionally, restrictions on the antenna polarization used by the TN may include the TN network nodes (e.g., device 320 as a TRP of the TN) using vertical polarization, and the NTN UL receiver using horizontally polarized antennas or a combination of LCHP and RCHP. Alternatively or additionally, restrictions on the antenna polarization used by the TN may include the TN network nodes (e.g., device 320 as a TRP of the TN) using RHCP, and the NTN UL receiver using LHCP. Alternatively or additionally, restrictions on the antenna polarization used by the TN may include the use of the same circular polarization (which is LHCP or RHCP) for DL ​​transmissions of the TN network nodes (e.g., device 320 as a TRP of the TN) and NTN UL receivers.

[0036] Example processing

[0037] Figure 4 An example process 400 according to an implementation of the present disclosure is illustrated. Process 400 may be a partial or complete example implementation of the above-described scheme regarding spectrum sharing between a TN and an NTN with interference control according to the present disclosure. Process 400 may represent one aspect of an implementation of the features of device 310 and / or device 320. Process 400 may include one or more operations, actions, or functions as shown in block 410. Although illustrated as discrete blocks, the individual blocks of process 400 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Furthermore, the blocks of process 400 may be... Figure 4The process can be executed in the order shown, or alternatively in a different order. Process 400 can be implemented by device 310 or any suitable UE or machine type device. For illustrative purposes only and not as a limitation, process 400 is described below in the context that device 310 is implemented in or as an NTN UE, and device 320 is implemented in or as a TN base station (e.g., gNB or TRP). Process 400 may begin at block 410.

[0038] At 410, processing 400 may include a processor 312 of device 310 as a UE communicating with the NT network node of the NTN via transceiver 316 through shared resources with the TN, wherein either or both of the directional gain and directional transmission power relative to the network node of the TN are required such that the interference between the TN DL transmission and the NTN UL transmission is less than a threshold.

[0039] In some implementations, at least one of directional gain and directional transmit power can be defined using a continuous transmit mask for all angles above the horizon beyond a specified angle. For example, the EIRP of a TN network node can be lower than a specified EIRP value derived from a continuous transmit mask.

[0040] In some implementations, this requirement may include the average network node Tx power (dBm / km) per unit Earth surface TN. 2 (restrictions)

[0041] In some implementations, this requirement may include restrictions on the antenna polarization used by the TN. For example, restrictions on the antenna polarization used by the TN may include limiting the TN network nodes (e.g., device 320 as a TRP of the TN) to using either vertically or horizontally polarized antennas. Alternatively or additionally, restrictions on the antenna polarization used by the TN may include limiting the TN network nodes (e.g., device 320 as a TRP of the TN) to using LHCP or RHCP. Alternatively or additionally, restrictions on the antenna polarization used by the TN may include the TN network nodes (e.g., device 320 as a TRP of the TN) using vertical polarization, and the NTN UL receiver using horizontally polarized antennas or a combination of LCHP and RCHP. Alternatively or additionally, restrictions on the antenna polarization used by the TN may include the TN network nodes (e.g., device 320 as a TRP of the TN) using RHCP, and the NTN UL receiver using LHCP. Alternatively or additionally, restrictions on the antenna polarization used by the TN may include DL transmissions of TN network nodes (e.g., device 320 as a TRP of the TN) and NTN UL receivers using the same circular polarization (which is LHCP or RHCP).

[0042] Figure 5 An example process 500 according to an implementation of the present disclosure is illustrated. Process 500 may be an example implementation, either partially or completely, of the above-described scheme regarding spectrum sharing between a TN and an NTN with interference control according to the present disclosure. Process 500 may represent one aspect of an implementation of the features of device 310 and / or device 320. Process 500 may include one or more operations, actions, or functions as shown in block 510. Although illustrated as discrete blocks, the individual blocks of process 500 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Furthermore, the blocks of process 500 may be... Figure 5 The process can be executed in the order shown, or alternatively in a different order. Process 500 can be implemented by device 310 or any suitable UE or machine type device. For illustrative purposes only and not as a limitation, process 500 is described below in the context that device 310 is implemented in or as an NTN UE, and device 320 is implemented in or as a TN base station (e.g., gNB or TRP). Process 500 may begin at block 510.

[0043] At 510, processing 500 may include a processor 322 of device 320, which is a network node of the TN (e.g., TRP or gNB), communicating with at least one UE (e.g., device 310) via transceiver 326 through shared resources with the NTN, wherein either or both of the directional gain and directional transmit power relative to the network node of the TN are required such that the interference between TN DL transmission and NTN UL transmission is less than a threshold.

[0044] In some implementations, at least one of directional gain and directional transmit power can be defined using a continuous transmit mask for all angles above the horizon beyond a specified angle. For example, the EIRP of a TN network node can be lower than a specified EIRP value derived from a continuous transmit mask.

[0045] In some implementations, this requirement may include the average network node Tx power (dBm / km) per unit Earth surface TN. 2 (restrictions)

[0046] In some implementations, this requirement may include restrictions on the antenna polarization used by the TN. For example, restrictions on the antenna polarization used by the TN may include limiting the TN network nodes (e.g., device 320 as a TRP of the TN) to using either vertically or horizontally polarized antennas. Alternatively or additionally, restrictions on the antenna polarization used by the TN may include limiting the TN network nodes (e.g., device 320 as a TRP of the TN) to using LHCP or RHCP. Alternatively or additionally, restrictions on the antenna polarization used by the TN may include the TN network nodes (e.g., device 320 as a TRP of the TN) using vertical polarization, and the NTN UL receiver using horizontally polarized antennas or a combination of LCHP and RCHP. Alternatively or additionally, restrictions on the antenna polarization used by the TN may include the TN network nodes (e.g., device 320 as a TRP of the TN) using RHCP, and the NTN UL receiver using LHCP. Alternatively or additionally, restrictions on the antenna polarization used by the TN may include the use of the same circular polarization (which is LHCP or RHCP) for DL ​​transmissions of the TN network nodes (e.g., device 320 as a TRP of the TN) and NTN UL receivers.

[0047] Additional notes

[0048] The topics described herein sometimes illustrate different components contained within or connected to different other components. It should be understood that the architectures described are merely examples, and many other architectures can actually be implemented to achieve the same functionality. In a conceptual sense, any arrangement of components that achieve the same functionality is effectively “associated” to achieve the desired function. Therefore, any two components combined in this document to achieve a particular function can be considered “associated” with each other to achieve the desired function, regardless of the architecture or intermediate components. Similarly, any two components so associated can also be considered “operationally connected” or “operationally linked” to each other to achieve the desired functionality, and any two components that can be so associated can also be considered “operationally linked” to each other to achieve the desired functionality. Specific examples of operable connections include, but are not limited to, physically matchable and / or physically interacting components and / or wirelessly interactable and / or logically interacting and / or logically interactable components.

[0049] Furthermore, regarding the use of virtually any plural and / or singular terms in this document, those skilled in the art can appropriately convert from plural to singular and / or from singular to plural depending on the context and / or application. For clarity, various singular / plural permutations may be explicitly described herein.

[0050] Furthermore, those skilled in the art will understand that, in general, the terms used herein, particularly those used in the appended claims, such as the body of the appended claims, are typically intended as “open-ended” terms; for example, the term “comprising” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “at least having,” and the term “comprising” should be interpreted as “including but not limited to.” Those skilled in the art will further understand that if a specific number of introduced claim statements are desired, such an intent will be explicitly stated in the claims, and without such a statement, such an intent does not exist. For example, to aid understanding, the following appended claims may contain the use of the introductory phrases “at least one” and “one or more” to introduce claim statements. However, the use of such phrases should not be construed as implying that a claim statement introduced by the indefinite article “a” or “an” will limit any particular claim containing such an introduced claim statement to an implementation containing only one such statement, even when the same claim includes the introductory phrases “one or more” or “at least one,” and indefinite articles such as “a” or “an,” e.g., “an” and / or “an,” should be interpreted as meaning “at least one” or “one or more.” This also applies to the use of explicit texts introducing claim statements. Furthermore, even if the specific number of items listed in the introduced claims is explicitly enumerated, those skilled in the art will recognize that such enumeration should be interpreted as meaning at least the number listed; for example, a bare enumeration of “two items” without other modifiers means at least two items, or two or more items. Moreover, in those cases, the convention is similar to “at least one of A, B, and C, etc.” Generally, in the conventional sense understood by those skilled in the art, the use of such a construct, such as "a system having at least one of A, B, and C," will include, but is not limited to, systems having a single A, a single B, a single C, A and B together, A and C together, B and C together, and / or A, B, and C together, etc., in those cases where the convention is similar to "at least one of A, B, or C." Generally, this construct is intended for use in the conventional sense understood by those skilled in the art; for example, "a system having at least one of A, B, or C" will include, but is not limited to, systems having a single A, a single B, a single C, A and B together, A and C together, B and C together, and / or A, B, and C together. Those skilled in the art will further understand that any extractive words and / or phrases that actually present two or more alternative terms, whether in the specification, claims, or drawings, should be understood to cover the possibility of including one, any, or both of the terms. For example, the phrase "A or B" will be understood to include the possibility of "A" or "B" or "A and B."

[0051] As will be understood from the foregoing, various embodiments of the invention have been described herein for illustrative purposes, and various modifications may be made without departing from the scope and spirit of the invention. Therefore, the various implementations disclosed herein are not intended to be limiting, and their true scope and spirit are indicated by the appended claims.

Claims

1. A method for spectrum sharing between a terrestrial network and a non-terrestrial network, comprising: The user equipment (UE) processor communicates with non-terrestrial NT network nodes of the non-terrestrial network NTN by sharing resources with the terrestrial network TN. There are requirements for one or both of the directional gain and directional transmit power relative to the TN network node, such that the interference between the TN downlink DL transmission and the NTN uplink UL transmission is less than a threshold; at least one of the directional gain and the directional transmit power is defined by a continuous transmit mask for all angles above the horizon exceeding a specified angle.

2. The method according to claim 1, wherein, The effective isotropic radiated power (EIRP) of the TN network nodes is lower than the specified EIRP value from the continuous emission mask.

3. The method according to claim 1, wherein, The requirements include the average Tx power dBm / km transmitted by network nodes of TN per unit Earth surface. 2 Restrictions.

4. The method according to claim 1, wherein, The requirements include restrictions on the antenna polarization used by the TN.

5. The method according to claim 4, wherein, The restrictions on the antenna polarization used by the TN include limiting the network nodes of the TN to using either vertically or horizontally polarized antennas.

6. The method according to claim 4, wherein, The restrictions on the antenna polarization used by the TN include limiting the network nodes of the TN to using either left-hand circular polarization (LHCP) or right-hand circular polarization (RHCP).

7. The method according to claim 4, wherein, The limitations on the antenna polarization used by the TN include the use of vertical polarization for the TN network nodes, while the NTN UL receiver uses a combination of horizontally polarized antennas or left-hand circularly polarized (LHCP) or right-hand circularly polarized (RHCP).

8. The method according to claim 4, wherein, The limitations on the antenna polarization used by the TN include the use of right-hand circular polarization (RHCP) for the TN network nodes and left-hand circular polarization (LHCP) for the NTN UL receiver.

9. The method according to claim 4, wherein, The limitation on the antenna polarization used by the TN includes the use of the same circular polarization for DL ​​transmission of the TN network nodes and the NTN UL receiver, which is either left-hand circular polarization (LHCP) or right-hand circular polarization (RHCP).

10. A method for spectrum sharing between a terrestrial network and a non-terrestrial network, comprising: The processor of the network node in the terrestrial network (TN) communicates with at least one user equipment (UE) by sharing resources with the non-terrestrial network (NTN). There are requirements for one or both of the directional gain and directional transmit power of the network node relative to the TN, such that the interference between the TN downlink DL transmission and the NTN uplink UL transmission is less than a threshold; at least one of the directional gain and the directional transmit power is defined by a continuous transmit mask for all angles above the horizon exceeding a specified angle.

11. The method according to claim 10, wherein, The effective isotropic radiated power (EIRP) of the TN network nodes is lower than the specified EIRP value from the continuous emission mask.

12. The method according to claim 10, wherein, The requirements include the average Tx power dBm / km transmitted by network nodes of TN per unit Earth surface. 2 Restrictions.

13. The method according to claim 10, wherein, The requirements include restrictions on the antenna polarization used by the TN.

14. The method according to claim 13, wherein, The restrictions on the antenna polarization used by the TN include limiting the network nodes of the TN to using either vertically or horizontally polarized antennas.

15. The method according to claim 13, wherein, The restrictions on the antenna polarization used by the TN include limiting the network nodes of the TN to using either left-hand circular polarization (LHCP) or right-hand circular polarization (RHCP).

16. The method according to claim 13, wherein, The limitations on the antenna polarization used by the TN include the use of vertical polarization for the TN network nodes, while the NTN uplink UL receivers use either horizontally polarized antennas or a combination of left-hand circular polarization (LHCP) or right-hand circular polarization (RHCP).

17. The method according to claim 13, wherein, The limitations on the antenna polarization used by the TN include the use of right-hand circular polarization (RHCP) for the TN network nodes, while the use of left-hand circular polarization (LHCP) for the NTN uplink UL receiver.

18. The method according to claim 13, wherein, The limitation on the antenna polarization used by the TN includes the use of the same circular polarization for the downlink DL transmission of the TN network nodes and the NTN uplink UL receiver, which is either left-hand circular polarization (LHCP) or right-hand circular polarization (RHCP).

Images