CN119675730B

CN119675730B - Remote interference management method and system based on user equipment, satellite equipment and base station

Info

Publication number: CN119675730B
Application number: CN202311212664.XA
Authority: CN
Inventors: 应凯; 马蕾; 李丹妮; 昆仑; 张智强; 卢江长美; 李沛; 俞晖; 归琳
Original assignee: Chenxin Technology Co ltd; Shanghai Jiao Tong University
Current assignee: Chenxin Technology Co ltd; Shanghai Jiao Tong University
Priority date: 2023-09-19
Filing date: 2023-09-19
Publication date: 2025-10-28
Anticipated expiration: 2043-09-19
Also published as: CN119675730A

Abstract

The invention provides a remote interference management method and a system based on user equipment, satellite equipment and a base station, wherein when co-channel interference exists between a ground network and a non-ground network, a reference signal is demodulated from the interference through a configured reference signal, and a source of the co-channel interference is acquired based on the currently demodulated reference signal; reporting the current interference situation and the same frequency interference source for the network to make corresponding adjustment including scheduling, configuration or resource management, so as to avoid interference.

Description

Remote interference management method and system based on user equipment, satellite equipment and base station

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and a system for remote interference management based on user equipment, satellite equipment, and a base station.

Background

The terrestrial network and the non-terrestrial network may communicate using the same frequency band. Thus, co-channel interference may exist between the terrestrial and non-terrestrial networks. The interference may be co-directional or different, and therefore, it is necessary to identify the interference in the communication system and adjust the interference accordingly based on the identified interference to avoid interference.

Patent document CN112956153a (application number 201980071596.5) discloses systems, apparatus, methods, and computer-readable media for Remote Interference Management (RIM) in wireless networks, including transmitting RIM reference signals (RIM-RSs) to help interfered Radio Access Network (RAN) nodes identify an interfering source RAN node due to, for example, atmospheric waveguides. The RIM-RS is also flexibly configured. Other embodiments are described and/or claimed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a remote interference management method and a system based on user equipment, satellite equipment and a base station.

The remote interference management method based on the user equipment, the satellite equipment and the base station comprises the steps of demodulating a reference signal from interference through a configured reference signal when co-channel interference exists between a ground network and a non-ground network, acquiring a source of co-channel interference based on the currently demodulated reference signal, and reporting the current interference situation and the source of co-channel interference for the network to make corresponding adjustment including scheduling, configuration or resource management so as to avoid interference.

Preferably, it comprises:

When the downlink signal of the ground network base station interferes with the downlink user of the non-ground network, the non-ground network user equipment acquires the configuration of a plurality of downlink reference signals of the ground network, demodulates the reference signals from the interference, acquires the same-frequency interference sources received by the non-ground network user equipment according to the demodulated reference signals, and reports the interference conditions of the non-ground network user equipment for the network to make corresponding adjustment including scheduling, configuration or resource management so as to avoid interference;

When downlink signals of a non-ground network satellite generate interference to downlink users of a ground network, ground network user equipment acquires a plurality of downlink reference signal configurations of the non-ground network, demodulates reference signals from the interference, acquires the same-frequency interference sources received by the ground network user equipment according to the demodulated reference signals, and reports the interference conditions of the ground network user equipment for the network to make corresponding adjustment including scheduling, configuration or resource management so as to avoid interference;

When uplink signals from the ground network user equipment to the base station interfere with uplink signals from the non-ground network user equipment to the satellite, the non-ground network satellite equipment acquires a plurality of ground network uplink reference signal configurations, demodulates reference signals from the interference, acquires the same-frequency interference sources received by the non-ground network satellite equipment according to the demodulated reference signals, and reports the interference conditions of the non-ground network satellite equipment to the network for corresponding adjustment including scheduling, configuration or resource management, so that interference is avoided;

When uplink signals from non-ground network user equipment to satellites interfere an uplink from the ground network user equipment to a base station, the ground network base station acquires a plurality of non-ground network uplink reference signal configurations, demodulates reference signals from the interference, acquires the same-frequency interference sources received according to the demodulated reference signals, and reports the interference conditions of the ground network base station for a network to make corresponding adjustment including scheduling, configuration or resource management so as to avoid interference;

when the downlink signal of the ground network base station interferes with the uplink from the non-ground network user equipment to the satellite, the non-ground network satellite equipment acquires a plurality of ground network downlink reference signal configurations, demodulates the reference signals from the interference, acquires the same-frequency interference sources received by the non-ground network satellite equipment according to the demodulated reference signals, and reports the interference conditions of the non-ground network satellite equipment for the network to make corresponding adjustment including scheduling, configuration or resource management so as to avoid interference;

When downlink signals of non-ground network satellite equipment interfere an uplink from ground network user equipment to a base station, the ground network base station acquires a plurality of reference signal configurations of the non-ground network downlink and demodulates the reference signals from the interference, and the ground network base station acquires the same-frequency interference sources received according to the demodulated reference signals and reports the interference conditions of the same-frequency interference sources for the network to make corresponding adjustment including scheduling, configuration or resource management so as to avoid interference;

When uplink signals from the ground network user equipment to the base station interfere with downlink signals from the non-ground network satellite equipment to the user equipment, the non-ground network user equipment acquires a plurality of uplink reference signal configurations of the ground network, demodulates the reference signals from the interference, acquires the received co-channel interference sources according to the demodulated reference signals, and reports the interference conditions of the non-ground network satellite equipment to the network for corresponding adjustment including scheduling, configuration or resource management, so that the interference is avoided;

When the uplink signals from the non-ground network user equipment to the satellite interfere the downlink signals from the ground network base station to the user equipment, the ground network user acquires a plurality of non-ground network uplink reference signal configurations, demodulates the reference signals from the interference, acquires the same-frequency interference sources received by the ground network user equipment according to the demodulated reference signals, reports the interference conditions of the ground network user equipment for the network to make corresponding adjustment including scheduling, configuration or resource management, so as to avoid interference, and the non-ground network satellite equipment and the user equipment acquire the ground network reference signal configurations, monitor the ground network communication, so that the corresponding adjustment including scheduling, configuration or resource management is made, and the interference is avoided.

Preferably, the reference signals comprise a synchronous signal SSB in 4G and/or 5G, a tracking reference signal TRS, a demodulation reference signal DM-RS, a reference signal CSI-RS for channel estimation, a reference signal CSI-IM for interference measurement and a reference signal PTRS for phase tracking;

The reference signals are public signals and/or special signals;

the public signal is a reference signal which can be obtained/identified/demodulated by a base station/user equipment in a ground network and a satellite/aircraft/user equipment in a non-ground network, the reference signal usually carries an identity ID directly or indirectly, when an interfered object demodulates the reference signal from an interference signal, the interfered object can acquire an interference source, and report the interfered condition of the interfered object for the network to make corresponding adjustment including scheduling, configuration or resource management, so that interference is avoided;

The special signal is specially used for a certain transmission/a certain link, and comprises uplink/downlink transmission of a certain base station of a ground network and a certain user equipment and uplink/downlink transmission of a certain satellite of a non-ground network and a certain user equipment.

Preferably, the reference signal also comprises a space interference management reference signal, wherein the space interference management reference signal is a new reference signal introduced for ground network/non-ground network interference management, and the resources occupied by the space interference management reference signal comprise time domain resources, frequency domain resources and code domain/sequence resources;

In the time domain, the spatial interference management reference signals are periodically, semi-statically and/or dynamically transmitted, different spatial interference management reference signals are configured with different period and/or time domain offsets;

On the frequency domain, the space interference management reference signal resource is determined by subcarrier spacing and/or bandwidth and/or resource block/subcarrier position/index;

In the code domain, different spatial interference management reference signals use different sequences, and the spatial interference management reference signals directly/indirectly carry certain information.

Preferably, the spatial interference management reference signals are divided into two types according to the interference and interfered conditions, wherein one type is transmitted by an interference source, an interfered object and/or a network detect the existence of interference, and the other type is transmitted by an interfered object, because the interference is usually mutual, the spatial interference management reference signals transmitted by the interfered object enable the interference source and/or the network to know the existence of interference, and the interference source and/or the network can enable the interfered object identity information and/or the interfered condition to be known.

Preferably, the spatial interference management reference signals are divided into two types according to different communication scenes, wherein one type is transmitted by base stations/user equipment of a ground network, the other type is transmitted by satellites/aircrafts/user equipment of a non-ground network, and the ground network and the non-ground network acquire interference conditions between each other through the two types of spatial interference management reference signals.

Preferably, the spatial interference management reference signals are classified into two categories according to uplink and downlink, including one category transmitted in uplink transmission and the other category transmitted in downlink transmission.

Preferably, the interference source actively transmits the spatial interference management reference signal, and the interfered source transmits the spatial interference management reference signal after detecting the existence of the interference.

The remote interference management system based on the user equipment, the satellite equipment and the base station comprises the steps of demodulating a reference signal from interference through a configured reference signal when co-channel interference exists between a ground network and a non-ground network, acquiring a source of co-channel interference based on the currently demodulated reference signal, and reporting the current interference situation and the source of co-channel interference for the network to make corresponding adjustment including scheduling, configuration or resource management so as to avoid interference.

Preferably, it comprises:

When uplink signals from non-ground network user equipment to satellites interfere downlink signals from a ground network base station to user equipment, a ground network user acquires a plurality of non-ground network uplink reference signal configurations, demodulates reference signals from the interference, acquires received common-frequency interference sources according to the demodulated reference signals, and reports interference conditions of the ground network user equipment for a network to make corresponding adjustment including scheduling, configuration or resource management so as to avoid interference;

The reference signals comprise a synchronous signal SSB, a tracking reference signal TRS, a demodulation reference signal DM-RS, a reference signal CSI-RS for channel estimation, a reference signal CSI-IM for interference measurement and a reference signal PTRS for phase tracking in 4G and/or 5G;

The reference signals are public signals and/or special signals;

The special signal is specially used for a certain transmission/a certain link, and comprises uplink/downlink transmission between a certain base station of a ground network and a certain user equipment and uplink/downlink transmission between a certain satellite of a non-ground network and a certain user equipment;

The reference signal also comprises a space interference management reference signal, wherein the space interference management reference signal is a new reference signal introduced for ground network/non-ground network interference management, and the resources occupied by the space interference management reference signal comprise time domain resources, frequency domain resources and code domain/sequence resources;

In the code domain, different space interference management reference signals use different sequences, wherein the space interference management reference signals directly/indirectly carry certain information;

The spatial interference management reference signals are divided into two types according to the interference and interfered conditions, wherein one type is transmitted by an interference source, an interfered object and/or a network detect the existence of interference, and the interfered object and/or the network acquire the interference source;

According to different communication scenes, the spatial interference management reference signals are divided into two types, wherein one type is transmitted by base stations/user equipment of a ground network, and the other type is transmitted by satellites/aircrafts/user equipment of a non-ground network;

according to the difference of uplink and downlink, the spatial interference management reference signals are divided into two categories, wherein one category is transmitted in uplink transmission, and the other category is transmitted in downlink transmission;

the interfered source transmits the space interference management reference signal actively, and the interfered source transmits the space interference management reference signal after detecting the existence of the interference.

Compared with the prior art, the invention has the following beneficial effects:

1. The invention can acquire the interference source based on the reference signal, thereby further adjusting and avoiding interference;

2. the present invention takes all circumstances into account, and is fully contemplated.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

Fig. 1 is a typical scenario diagram of a non-terrestrial network providing access to user devices.

Fig. 2 is a representative scenario diagram of a non-terrestrial network providing access to user devices.

Fig. 3 is a block diagram.

Fig. 4 a-4 d are schematic diagrams of a remote interference management system based on user equipment, satellite equipment and base stations.

Fig. 5 a-5 d are schematic diagrams of a remote interference management system based on user equipment, satellite equipment and base stations.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.

Example 1

A typical scenario in which a non-terrestrial network (NTN) provides access to user equipment is shown in fig. 1-2;

A non-terrestrial network typically includes one or more satellite gateways for connecting the non-terrestrial network to a public data network. For example, a geostationary orbit satellite (GEO) is provided with signals by one or more satellite gateways deployed in a satellite target coverage area. It may be assumed that user equipment in a single cell is served by only one satellite gateway. A non-terrestrial network satellite is serviced by only one or a few satellite gateways at a time. The system ensures continuity between the service and the feeder, mobile anchoring and handover are performed for a sufficient time.

In addition, non-terrestrial networks typically include components such as a feeder (or "feed") or radio link between a satellite gateway and a satellite (or unmanned aerial vehicle system (UAS) platform), and a service link or radio link between user equipment and the satellite (or UAS platform).

In addition, non-terrestrial networks typically include components that are satellites (or UAS platforms) that can implement transparent or regenerative payloads, i.e., payloads that are payload processed (with onboard processing). A satellite (or unmanned aerial vehicle system (UAS) platform) may generate multiple beams within a service area defined by its field of view. The footprint of the beam is typically elliptical. The field of view of a satellite (or UAS platform) depends on its onboard antenna pattern and the minimum elevation angle. For transparent loads, radio frequency filtering, frequency conversion and amplification may be applied. Thus, the waveform signal of the payload repetition is unchanged. For payload handling payloads, radio frequency filtering, frequency conversion and amplification, as well as demodulation/decoding, switching and/or routing, encoding/modulation may be applied. This effectively amounts to having all or part of the base station functionality (e.g., gNB) on the satellite (or UAS platform).

In addition, the non-terrestrial network may also include elements that may optionally use inter-satellite links (ISLs) if a set of satellites is present. This would require the implementation of regenerative loading on the satellite. The ISL may operate in the radio frequency or optical frequency band.

Furthermore, non-terrestrial networks typically include elements whereby user equipment may be served by satellites (or UAS platforms) within a target service area. Satellites (or UAS platforms) may be of different types, low earth orbit satellites (LEO satellites), medium earth orbit satellites (MEO satellites), geosynchronous orbit satellites (GEO satellites), UAS platforms (including HAPS), and high elliptical orbit satellites (HEO satellites).

A set of Low Earth Orbit (LEO) and Medium Earth Orbit (MEO) satellites may be used to provide service in the northern hemisphere and the southern hemisphere. In some cases, the satellite combination may even provide a global coverage including polar regions. To achieve the latter, an appropriate orbital tilt angle, sufficient beams and inter-satellite links are required.

A non-terrestrial network may provide access to user equipment in six reference scenarios including circular orbit and concept stationary platform, highest Round Trip Delay (RTD) constraint, highest doppler constraint, transparent and regenerated payload, one with ISL and one without ISL (regenerated payload is mandatory in the case of inter-satellite links), fixed or directable beams resulting in a beam coverage area moving or fixed on the ground, respectively.

The invention provides an NTN support example of a UE function and parameter list:

Fig. 3 is a block diagram illustrating one implementation of one or more base stations (gNBs) and one or more User Equipments (UEs) supporting a non-terrestrial network (NTN). One or more UEs 102 communicate with one or more gNBs s 160 using one or more antennas 122 a-n. For example, the UE 102 sends electromagnetic signals to the gNB 160 and receives electromagnetic signals from the gNB 160 using one or more antennas 122 a-n. The gNB 160 communicates with the UE 102 using one or more antennas 180 a-n.

The UE 102 and the gNB 160 may communicate using one or more channels 119, 121. For example, UE 102 may transmit information or data to the gNB 160 using one or more uplink channels 121. Examples of the uplink channel 121 include PUCCH (physical uplink control channel) and PUSCH (physical uplink shared channel), PRACH (physical random access channel), and the like. For example, the uplink channel 121 (e.g., PUSCH) may be used to transmit uplink data (i.e., transport blocks, MAC PDUs, and/or uplink shared channels (UL-SCH)).

In some examples, UL data may include URLLC data. URLLC data may be UL-SCH data. In some examples, URLLC-PUSCH (i.e., a different physical uplink shared channel than PUSCH) may be defined for transmitting URLLC data. For simplicity, the term "PUSCH" may refer to any case where (1) PUSCH only (e.g., regular PUSCH, non-URLLC-PUSCH, etc), (2) PUSCH or URLLC-PUSCH, (3) PUSCH and URLLC-PUSCH or (4) PUSCH only URLLC-PUSCH (e.g., not regular PUSCH).

Further, for example, the uplink channel 121 may be used to transmit hybrid automatic repeat request-acknowledgement (HARQ-ACK), channel State Information (CSI), and/or Scheduling Request (SR). The HARQ-ACK may include information for acknowledging or negating downlink data, i.e., transport blocks, medium access control protocol data units (MAC PDUs), and/or downlink shared channels (DL-SCHs). The CSI may include information indicating the quality of the downlink channel. The SR may be used to request uplink shared channel (UL-SCH) resources for new transmissions and/or retransmissions. For example, the SR may be used to request UL resources for transmitting UL data.

One or more gNBs s 160 may also transmit information or data to one or more UEs 102 using one or more downlink channels 119. Examples of downlink channels 119 include PDCCH, PDSCH, and the like. Other types of channels may be used. The PDCCH may be used to transmit Downlink Control Information (DCI).

Each UE 102 may include one or more transceivers 118, one or more demodulators 114, one or more decoders 108, one or more encoders 150, one or more modulators 154, one data buffer 104, and one UE operations module 124. For example, one or more receive and/or transmit paths may be implemented in UE 102. For convenience, only a single transceiver 118, decoder 108, demodulator 114, encoder 150, and modulator 154 are illustrated in UE 102, but multiple parallel elements (e.g., transceiver 118, decoder 108, demodulator 114, encoder 150, and modulator 154) may be implemented.

The transceiver 118 in the UE may include one or more receivers 120 and one or more transmitters 158. One or more of the receivers 120 may receive signals from the gNB160 using one or more antennas 122 a-n. For example, the receiver 120 may receive and downconvert a signal to generate one or more received signals 116. These one or more received signals 116 may be provided to demodulator 114. One or more transmitters 158 may transmit signals to the gNB160 using one or more antennas 122 a-n. For example, the one or more transmitters 158 may up-convert and transmit one or more modulated signals 156.

Demodulator 114 may demodulate one or more received signals 116 to generate one or more demodulated signals 112. These one or more demodulated signals 112 may be provided to the decoder 108.UE102 may decode the signal using decoder 108. The decoder 108 may generate a decoded signal 110 including the UE decoded signal 106 (also referred to as a first UE decoded signal 106). For example, the first UE decoded signal 106 may include received payload data, which may be stored in the data buffer 104. The other signal contained in the decoded signal 110 (also referred to as the second UE decoded signal 110) may include overhead data and/or control data. For example, the second UE decoded signal 110 may provide data that may be used by the UE operations module 124 to perform one or more operations.

Typically, the UE operation module 124 may enable the UE102 to communicate with one or more gnbs 160. The UE operation module 124 may include a UE scheduling module 126.

UE102 may perform one or more downlink receptions and/or one or more uplink transmissions using UE scheduling module 126. The downlink reception may include data reception, downlink control information reception, and/or downlink reference signal reception. The uplink transmission includes data transmission, uplink control information transmission, and/or uplink reference signal transmission.

The gNB in the figure may be a base station located on the ground or a space base located on a satellite. The channels in the figure may be links between user equipment and base stations, and may also include serving links, feeder links, and/or inter-satellite links.

In a wireless communication system, physical channels (e.g., uplink physical channels and/or downlink physical channels) may be defined. Physical channels (e.g., uplink physical channels and/or downlink physical channels) may be used to communicate (e.g., transmit and/or receive) information delivered from a higher level.

For example, in the uplink, a Physical Random Access Channel (PRACH) may be defined. In some approaches, PRACH (and/or random access procedure) may be used for initial access connection establishment procedures, handover procedures, connection re-establishment, timing adjustment (e.g., synchronization of uplink transmissions, for uplink synchronization) and/or requesting uplink shared channel (UL-SCH) resources (e.g., uplink Physical Shared Channel (PSCH) (e.g., PUSCH) resources).

In some examples, a Physical Uplink Control Channel (PUCCH) may be defined. The PUCCH may be used to transmit Uplink Control Information (UCI). UCI may include hybrid automatic repeat request-acknowledgement (HARQ-ACK), channel State Information (CSI), and/or Scheduling Request (SR). The HARQ-ACK may be used to indicate a correct Authentication (ACK) or Negative Acknowledgement (NACK) for downlink data, e.g., transport blocks, medium access control protocol data units (MAC PDUs), and/or downlink shared channels (DL-SCHs). The CSI may be used to indicate the status of a downlink channel (e.g., a downlink signal). The SR may be used to request uplink data resources (e.g., transport blocks, MAC PDUs, and/or uplink shared channels (UL-SCHs)).

The DL-SCH and/or UL-SCH may be transport channels used in the MAC layer. In the MAC layer, one or more Transport Blocks (TBs) and/or MAC PDUs may be defined as units of transport channels. A transport block may be defined as a data unit that is transferred from the MAC layer to the physical layer. The MAC layer may pass the transport block to the physical layer (e.g., the MAC layer passes the data to the physical layer as a transport block). In the physical layer, transport blocks may be mapped to one or more codewords.

In the downlink, a Physical Downlink Control Channel (PDCCH) may be defined for transmitting Downlink Control Information (DCI). In some cases, multiple DCI formats may be defined for transmitting DCI on a PDCCH. For example, fields may be defined in a DCI format and mapped to information bits (e.g., DCI bits).

In some cases, DCI format1_0 for scheduling PDSCH in a cell may be defined as DCI format of downlink. The DCI formats 1_0 may be transmitted using one or more radio network temporary identifiers, e.g., cell RNTI(s) (C-RNTI (s)), configured scheduling RNTI(s) (CS-RNTI (s)), system information RNTI(s) (SI-RNTI (s)) and/or random access RNTI(s) (RA-RNTI (s)), as described herein. In some cases, DCI format1_0 may be monitored (e.g., transmitted, mapped) in a Common Search Space (CSS) and/or user equipment specific search space (USS). In some cases, DCI format1_0 may only be monitored (e.g., transmitted, mapped) in CSS.

For example, DCI included in DCI format 1_0 may be frequency domain resource allocation (e.g., for PDSCH). Additionally or alternatively, the DCI included in the DCI format 1_0 may be a time-domain resource allocation (e.g., for PDSCH). Additionally or alternatively, the DCI included in the DCI format 1_0 may be a modulation and coding scheme (e.g., for PDSCH). Additionally or alternatively, the DCI included in the DCI format 1_0 may be a new data indicator. Additionally or alternatively, the DCI included in the DCI format 1_0 may be a HARQ process number. Additionally or alternatively, DCI included in DCI format 1_0 may be a Transmission Power Control (TPC) command for scheduling a scheduled PUCCH. DCI format 1_0 and/or modified/enhanced DCI format 1_0 may be used to schedule a reduced capability User Equipment (UE) and PDSCH and/or downlink served by the UE.

Additionally or alternatively, DCI format 1_1 for a downlink data shared channel (PDSCH) in a scheduling cell may also be defined as a downlink DCI format. Additionally or alternatively, the DCI format 1_1 may be transmitted using a C-RNTI and/or a CS-RNTI. Additionally or alternatively, the DCI format 1_1 may be monitored (e.g., transmitted and/or mapped) in the CSS and/or USS.

For example, the DCI included in the DCI format1_1 may be one bandwidth part (BWP) indicator (e.g., for PDSCH). Additionally or alternatively, the DCI included in the DCI format1_1 may be one frequency-domain resource allocation (e.g., for PDSCH). Additionally or alternatively, the DCI included in the DCI format1_1 may be one time-domain resource allocation (e.g., for PDSCH). Additionally or alternatively, the DCI contained in DCI format1_1 may be one modulation and coding scheme (e.g., for PDSCH). Additionally or alternatively, the DCI included in DCI format1_1 may be a new data indicator. Additionally or alternatively, the DCI included in the DCI format1_1 may be one HARQ process number. Additionally or alternatively, the DCI included in the DCI format1_1 may be one TPC command for planning the PUCCH. Additionally or alternatively, the DCI included in DCI format1_1 may be a CSI request (e.g., CSI report (e.g., aperiodic CSI report)) for requesting (e.g., triggering) CSI transmission. Additionally or alternatively, as described below, DCI included in DCI format1_1 may be information (e.g., SPS configuration index) for indicating a DL semi-persistent scheduling (SPS) configuration index. DCI format1_1 and/or modified/enhanced DCI format1_1 may be used to schedule PDSCH and/or downlink channels for reduced capability UEs(s) and their services(s).

Additionally or alternatively, a new DCI format (e.g., DCI format 1_2) for scheduling a downlink data shared channel (PDSCH) in a cell may be defined as the downlink DCI format. Additionally or alternatively, the DCI format 1_2 may be transmitted using a C-RNTI and/or a CS-RNTI. Additionally or alternatively, the DCI formats 1_2 may be monitored (e.g., transmitted and/or mapped) in the CSS and/or USS.

For example, DCI included in DCI format1_2 may be a bandwidth part (BWP) indicator (e.g., for PDSCH). Further, DCI included in the DCI format1_2 may be defined as a downlink DCI format. Additionally or alternatively, the C-RNTI and/or CS-RNTI may be used to transmit DCI format 1_2. DCI formats 1_2 in CSS and/or USS may also be monitored (e.g., transmitted and/or mapped). The DCI included in the DCI format1_2 may be frequency domain resource allocation (e.g., for PDSCH) or time domain resource allocation (e.g., for PDSCH). The DCI included in the DCI format1_2 may be a modulation and coding scheme (e.g., for PDSCH) or a new data indicator. The DCI included in the DCI format1_2 may be the HARQ process number or a TPC command for the scheduled PUCCH. Additionally or alternatively, the DCI included in DCI format1_2 may be a CSI request for requesting (e.g., triggering) CSI transmission (e.g., CSI report (e.g., aperiodic CSI report)). In addition, DCI included in DCI format1_2 may be a configurable field, such as an antenna port (0-2 bits), a transmission configuration indication (0-3 bits), a rate matching indication (0-2 bits), a Sounding Reference Signal (SRS) request (0-3 bits), a PRB bundling size indication (0-1 bits), a carrier indication (0-3 bits), a CSI request (0-3 bits), a ZP CSI-RS trigger (0-2 bits), a Beta offset indication (0-2 bits), an SRS resource indication (0-4 bits), a repetition factor (0-2 bits) and/or a priority indication (0-3 bits). Further, as described below, DCI included in DCI format1_2 may be information (e.g., SPS configuration index) for indicating DL semi-persistent scheduling (SPS) configuration index. DCI format1_2 and/or modified/enhanced DCI format1_2 may be used to schedule PDSCH and/or downlink for reduced capability UEs and their services.

In addition, a new DCI format (e.g., DCI format 1_3) may be defined for scheduling PDSCH in the cell as downlink DCI format. Additionally or alternatively, the C-RNTI and/or CS-RNTI may be used to transmit a new DCI format (e.g., DCI format 1_3). Additionally or alternatively, the DCI formats 1_3 may be monitored (e.g., transmitted and/or mapped) in the CSS and/or USS.

Additionally or alternatively, DCI format 0_0 for PUSCH in a scheduling cell may be defined as DCI format of uplink. Additionally or alternatively, the C-RNTI, CS-RNTI, and/or temporary C-RNTI may be used to transmit DCI format 0_0. Additionally or alternatively, DCI format 0_0 may be monitored (e.g., transmitted, mapped) in CSS and/or USS. In some examples, DCI format 0_0 may only be monitored (e.g., transmitted, mapped) in CSS.

For example, DCI included in DCI format 0_0 may be frequency domain resource allocation (e.g., PUSCH). Additionally or alternatively, the DCI included in DCI format 0_0 may be a time-domain resource allocation (e.g., PUSCH). Additionally or alternatively, the DCI contained in DCI format 0_0 may be a modulation and coding scheme (e.g., PUSCH). Additionally or alternatively, DCI included in DCI format 0_0 may be a new data indicator. Additionally or alternatively, DCI included in DCI format 0_0 may be a HARQ process number. Additionally or alternatively, the DCI included in the DCI format 0_0 may be a redundancy version. Additionally or alternatively, the DCI included in DCI format 0_0 may be TPC commands for the planned PUSCH. DCI format 0_0 and/or modified/enhanced DCI format 0_0 may be used to schedule PUSCH and/or uplink for reduced functionality UEs and their services.

Further, one DCI format 0_1 for scheduling PUSCH in a cell may be defined as a DCI format of an uplink. The DCI format 0_1 may be transmitted using the C-RNTI and/or the CS-RNTI. DCI format 0_1 may be monitored (e.g., transmitted, mapped) in CSS and/or USS.

For example, DCI included in DCI format 0_1 may be a BWP indicator (e.g., for PUSCH). Additionally or alternatively, the DCI included in the DCI format 0_1 may be a frequency-domain resource allocation (e.g., for PUSCH). Additionally or alternatively, the DCI included in the DCI format 0_1 may be a time-domain resource allocation (e.g., for PUSCH). Additionally or alternatively, the DCI included in the DCI format 0_1 may be a modulation and coding scheme (e.g., for PUSCH). Additionally or alternatively, DCI included in DCI format 0_1 may be a new data indicator. Additionally or alternatively, DCI included in DCI format 0_1 may be a HARQ process number. Additionally or alternatively, the DCI included in the DCI format 0_1 may be a TPC command for planning the PUSCH. Additionally or alternatively, DCI included in DCI format 0_1 may be a CSI request for requesting CSI reporting. Additionally or alternatively, as described below, DCI included in DCI format 0_1 may be information of a configuration index (e.g., CG configuration index) for indicating configuration authority. PUSCH and/or uplink channels may be scheduled using DCI format 0_1 and/or modified/enhanced DCI format 0_1 to serve low-capability UEs and their services.

Additionally or alternatively, DCI format 0_2 for scheduling PUSCH in a cell may be defined as DCI format of uplink. Additionally or alternatively, the C-RNTI and/or CS-RNTI may be used to transmit DCI format 0_2. Additionally or alternatively, DCI format 0_2 may be monitored (e.g., transmitted, mapped) in CSS and/or USS.

For example, DCI included in DCI format 0_2 may be a BWP indicator (e.g., for PUSCH). Additionally or alternatively, DCI included in DCI format 0_2 may be frequency domain resource allocation (e.g., for PUSCH). Additionally or alternatively, DCI included in DCI format 0_2 may be time domain resource allocation (e.g., for PUSCH). Additionally or alternatively, the DCI included in the DCI format 0_2 may be a modulation and coding scheme (e.g., for PUSCH). Additionally or alternatively, DCI included in DCI format 0_2 may be a new data indicator. Additionally or alternatively, DCI included in DCI format 0_2 may be a HARQ process number. Additionally or alternatively, DCI included in DCI format 0_2 may be TPC commands for scheduled PUSCH. Additionally or alternatively, DCI included in DCI format 0_2 may be a CSI request for requesting CSI reporting. Additionally or alternatively, DCI included in DCI format 0_2 may be a configurable field, e.g., antenna port [ 0-2 bits ], transmission configuration indication [ 0-3 bits ], rate matching indication [ 0-2 bits ], SRS request [ 0-3 bits ], PRB bundling size indication [ 0-1 bits ], carrier indication [ 0-3 bits ], CSI request [ 0-3 bits ], ZP CSI-RS trigger [ 0-2 bits ], beta offset indication [ 0-2 bits ], SRS resource indication [ 0-4 bits ], repetition factor [ 0-2 bits ] and/or priority indication [ 0-3 bits ]. Additionally or alternatively, as described below, DCI included in DCI format 0_2 may be information indicating a configuration index (e.g., CG configuration index) to which a grant has been configured. The DCI format 0_2 and/or the modified/enhanced DCI format 0_2 may be used to schedule PUSCH and/or uplink channels for UEs with reduced capabilities and their services.

Additionally or alternatively, a new DCI format (e.g., DCI format 0_3) for scheduling PUSCH in a cell may be defined as the DCI format of the uplink. Additionally or alternatively, the DCI format 0_3 may be transmitted using a C-RNTI and/or a CS-RNTI. Additionally or alternatively, the DCI format 0_3 may be monitored (e.g., transmitted, mapped) in the CSS and/or USS.

Additionally or alternatively, in the event that DCI format 1_0 and/or DCI format 1_1 and/or DCI format1_2 and/or DCI format 1_3 are received (e.g., based on detecting DCI format 1_0 and/or DCI format 1_1 and/or DCI format1_2 and/or DCI format 1_3), UE 102 may perform PDSCH reception. Additionally or alternatively, in the event that DCI format 0_0 and/or DCI format 0_1 and/or DCI format 0_2 and/or DCI format 0_3 is received (e.g., based on detecting DCI format 0_0 and/or DCI format 0_1 and/or DCI format 0_2 and/or DCI format 0_3), UE 102 may perform PUSCH transmission.

In some examples, as described above, an RNTI (e.g., a radio network temporary identifier) assigned to the UE 102 may be used for transmission of DCI (e.g., DCI format, DL control channel (e.g., PDCCH)). For example, the gNB 160 may transmit information for configuring (e.g., allocating) the RNTI (S) to the UE 102 using an RRC message, for example.

For example, cyclic Redundancy Check (CRC) check bits (may simply be referred to as CRC) may be generated based on and appended to the DCI, and then, after the appending, the RNTI(s) may scramble the CRC check bits. The UE 102 may attempt to decode (e.g., blind decode, monitor, detect) the DCI appended after the RNTI(s) scrambling code. For example, UE 102 may detect downlink control channels (e.g., PDCCH, DCI format) based on blind decoding. For example, the UE 102 may decode the downlink control channel using the RNTI scrambled CRC, in other words, the UE 102 may monitor the downlink control channel using the RNTI. For example, the UE 102 may detect DCI formats using RNTI.

In some examples, the RNTI(s) may include a C-RNTI (cell RNTI), a CS-RNTI (configuration scheduling C-RNTI), an SI-RNTI (System information RNTI), an RA-RNTI (random access-RNTI), and/or a temporary C-RNTI. For example, the C-RNTI(s) may be a unique identity used to identify the RRC connection and/or scheduling. Further, the CS-RNTI(s) may be a unique identity for scheduling based on configuration grants. In addition, the SI-RNTI may be used to identify system information (e.g., SI messages) mapped onto the BCCH and dynamically transmitted on the DL-SCH. In addition, the SI-RNTI may be used to broadcast the SI. Further, the RA-RNTI may be an identity for a random access procedure (e.g., msg.2 transmission). Further, the temporary C-RNTI may be used for a random access procedure (e.g., scheduling an msg.3 (re) transmission (e.g., an msg.3pusch (re) transmission)).

Additionally or alternatively, a new RNTI (e.g., NTN-RNTI) may be introduced for the NTN and its services. For example, in the case of receiving DCI format 1_0 and/or DCI format 1_1 and/or DCI format 1_2 and/or DCI format 1_3 using an NTN-RNTI scrambling code (e.g., based on detection of DCI format 1_0 and/or DCI format 1_1 and/or DCI format 1_2 and/or DCI format 1_3), UE 102 may perform PDSCH reception for an NTN transmission service. In addition or alternatively, if DCI format 0_0 and/or DCI format 0_1 and/or DCI format 0_2 and/or DCI format 0_3 using the NTN-RNTI scrambling code is received (e.g., based on detection of DCI format 0_0 and/or DCI format 0_1 and/or DCI format 0_2 and/or DCI format 0_3), the UE 102 may perform PUSCH transmission for the NTN transmission service.

In addition or alternatively, UL and DL may introduce different RNTIs. For example, a new RNTI (e.g., NTN-UL-RNTI) may be introduced for the NTN UE and its UL transmission service, while a new RNTI (e.g., NTN-DL-RNTI) may be introduced for the NTN UE and its DL transmission service. If DCI format 1_0 and/or DCI format 1_1 and/or DCI format 1_2 and/or DCI format 1_3 encrypted using the NTN-DL-RNTI is received (e.g., based on detection of DCI format 1_0 and/or DCI format 1_1 and/or DCI format 1_2 and/or DCI format 1_3), UE 102 may perform PDSCH reception for the NTN transmission service. Additionally or alternatively, if DCI format 0_0 and/or DCI format 0_1 and/or DCI format 0_2 and/or DCI format0_3 encrypted using NTN-UP-RNTI is received (e.g., based on detection of DCI format 0_0 and/or DCI format 0_1 and/or DCI format 0_2 and/or DCI format 0_3), UE 102 may perform PUSCH transmission for the NTN transmission service.

Additionally or alternatively, a Physical Downlink Shared Channel (PDSCH) and a Physical Uplink Shared Channel (PUSCH) may be defined. For example, if PDSCH (e.g., PDSCH resources) is scheduled using DCI format, UE 102 may receive downlink data on the scheduled PDSCH (e.g., PDSCH resources). Additionally or alternatively, if a PUSCH (e.g., PUSCH resource) is scheduled using DCI format, UE 102 may transmit uplink data on the scheduled PUSCH (e.g., PUSCH resource). For example, the PDSCH may be used to transmit downlink data (e.g., DL-SCH (S), downlink transport block (S)). Additionally or alternatively, PUSCH may be used for transmitting uplink data (e.g., UL-SCH (S), uplink transport block (S)).

In some examples, PDSCH and/or PUSCH may be used to transmit information of higher layers, such as a Radio Resource Control (RRC) layer and/or a MAC layer. For example, RRC messages (e.g., RRC signals) may be transmitted using PDSCH (e.g., from the gNB 160 to the UE 102) and/or PUSCH (e.g., from the UE 102 to the gNB 160). Additionally or alternatively, a MAC control element (MAC CE) may be transmitted using PDSCH (e.g., from gNB 160 to UE 102) and/or PUSCH (e.g., from UE 102 to gNB 160). In some examples, the RRC message and/or MAC CE may be referred to as a higher layer signal.

In some methods, a Physical Broadcast Channel (PBCH) may be defined. For example, the PBCH may be used to broadcast a Master Information Block (MIB). In some examples, the system information may be divided into MIB and some System Information Blocks (SIBs). For example, MIB can be used to carry minimal system information. Additionally or alternatively, SIBs may be used to carry system information messages.

In the downlink, a Synchronization Signal (SS) may be defined. The SS may be configured to obtain time and/or frequency synchronization with the cell. Additionally or alternatively, the SS may be configured to detect a physical layer cell ID of the cell.

In uplink wireless communication, an uplink Reference Signal (RS) may be used as an uplink physical signal. Additionally or alternatively, DL RSs may be used as downlink physical signals in downlink wireless communications. In some examples, the uplink physical signal and/or the downlink physical signal may not be used to transmit information from higher layers, but rather be used by the physical layer.

In some implementations, the downlink physical channels and/or downlink physical signals described above may be assumed to be included in a downlink signal (e.g., DL signal) to simplify the description. Additionally or alternatively, in some implementations, the uplink physical channel and/or the uplink physical signal may be assumed to be included in the uplink signal (i.e., UL signal) to simplify the description.

The Terrestrial Network (TN) and the non-terrestrial network (NTN) may communicate using the same frequency band. Thus, co-channel interference may exist between the terrestrial and non-terrestrial networks. Such interference may be co-directional or different, as shown in fig. 4 a-4 d and fig. 5 a-5 d.

The downlink signal of the base station of the terrestrial network may cause interference to the downlink user of the non-terrestrial network. If the non-ground network user equipment acquires the configuration of a plurality of reference signals of the ground network downlink, and demodulates a certain reference signal from the interference, the non-ground network user equipment can know the same-frequency interference source suffered by the non-ground network user equipment, and report the interference condition suffered by the non-ground network user equipment for the network to make corresponding scheduling or configuration or resource management so as to avoid interference. The ground network base station and the user equipment may also acquire the reference signal configuration of the non-ground network and monitor the communication of the non-ground network, so as to make corresponding scheduling or configuration or resource management to avoid interference.

Downlink signals from non-terrestrial network satellites may interfere with downlink users of the terrestrial network. If the ground network user equipment acquires the configuration of a plurality of reference signals of the non-ground network downlink, and demodulates a certain reference signal from the interference, the ground network user equipment can know the same-frequency interference source suffered by the ground network user equipment, and report the interference condition suffered by the ground network user equipment for the network to make corresponding scheduling or configuration or resource management so as to avoid interference. The non-terrestrial network satellite device and the user device may also acquire the reference signal configuration of the terrestrial network and monitor the communication of the terrestrial network, so as to make corresponding scheduling or configuration or resource management to avoid interference.

The uplink signals from terrestrial network user equipment to base stations may interfere with the uplink from non-terrestrial network user equipment to satellites. If the non-ground network satellite equipment acquires the configuration of a plurality of uplink reference signals of the ground network and demodulates a certain reference signal from interference, the non-ground network satellite equipment can know the same-frequency interference source received by the non-ground network satellite equipment and report the interference condition received by the non-ground network satellite equipment for the network to make corresponding scheduling or configuration or resource management so as to avoid interference. The ground network base station and the user equipment may also acquire the reference signal configuration of the non-ground network and monitor the communication of the non-ground network, so as to make corresponding scheduling or configuration or resource management to avoid interference.

Uplink signals from non-terrestrial network user equipment to satellites may interfere with the uplink from terrestrial network user equipment to base stations. If the ground network base station acquires the configuration of a plurality of reference signals of the non-ground network uplink, and demodulates a certain reference signal from the interference, the ground network base station can know the same-frequency interference source suffered by the ground network base station, and report the interference condition suffered by the ground network base station for the network to make corresponding scheduling or configuration or resource management so as to avoid interference. The non-terrestrial network satellite device and the user device may also acquire the reference signal configuration of the terrestrial network and monitor the communication of the terrestrial network, so as to make corresponding scheduling or configuration or resource management to avoid interference.

The downlink signals from the terrestrial network base stations may interfere with the uplink from non-terrestrial network user equipment to the satellite. If the non-ground network satellite equipment acquires the configuration of a plurality of reference signals of the ground network downlink, and demodulates a certain reference signal from the interference, the non-ground network satellite equipment can know the same-frequency interference source received by the non-ground network satellite equipment, and report the interference condition received by the non-ground network satellite equipment for the network to make corresponding scheduling or configuration or resource management so as to avoid interference. The ground network base station and the user equipment may also acquire the reference signal configuration of the non-ground network and monitor the communication of the non-ground network, so as to make corresponding scheduling or configuration or resource management to avoid interference.

Downlink signals from non-terrestrial network satellite devices may interfere with the uplink of terrestrial network user devices to the base station. If the ground network base station acquires the configuration of a plurality of reference signals of the non-ground network downlink, and demodulates a certain reference signal from the interference, the ground network base station can know the same-frequency interference source suffered by the ground network base station, and report the interference condition suffered by the ground network base station for the network to make corresponding scheduling or configuration or resource management so as to avoid interference. The non-terrestrial network satellite device and the user device may also acquire the reference signal configuration of the terrestrial network and monitor the communication of the terrestrial network, so as to make corresponding scheduling or configuration or resource management to avoid interference.

The uplink signals from terrestrial network user equipment to base stations may interfere with the downlink signals from non-terrestrial network satellite devices to the user equipment. If the non-ground network user equipment acquires the configuration of a plurality of uplink reference signals of the ground network and demodulates a certain reference signal from the interference, the non-ground network satellite equipment can know the same-frequency interference source received by the non-ground network satellite equipment and report the interference condition received by the non-ground network satellite equipment for the network to make corresponding scheduling or configuration or resource management so as to avoid interference. The ground network base station and the user equipment may also acquire the reference signal configuration of the non-ground network and monitor the communication of the non-ground network, so as to make corresponding scheduling or configuration or resource management to avoid interference.

Uplink signals from non-terrestrial network user equipment to satellites may interfere with the terrestrial network base station to user equipment downlink. If the ground network user acquires the configuration of a plurality of reference signals of the non-ground network uplink, and demodulates a certain reference signal from the interference, the ground network user equipment can know the same-frequency interference source suffered by the ground network user equipment, and report the interference condition suffered by the ground network user equipment for the network to make corresponding scheduling or configuration or resource management so as to avoid interference. The non-terrestrial network satellite device and the user device may also acquire the reference signal configuration of the terrestrial network and monitor the communication of the terrestrial network, so as to make corresponding scheduling or configuration or resource management to avoid interference.

The reference signals may be reference signals already existing in the current system, such as Synchronization Signals (SSB) in 4G and/or 5G, tracking Reference Signals (TRS), demodulation reference signals (DM-RS), reference signals for channel estimation (CSI-RS), reference signals for interference measurement (CSI-IM), reference signals for Phase Tracking (PTRS), etc. The reference signal may be a common signal, that is, a reference signal that can be obtained/identified/demodulated by both a base station/user equipment in a ground network and a satellite/aircraft/user equipment in a non-ground network, where the reference signal usually directly or indirectly carries an Identity (ID), and when an interfered object (base station/user equipment/satellite/aircraft) demodulates the reference signal from an interference signal, the interfered object can learn from which base station/user equipment/satellite/aircraft the interference originates, and report the interference condition of the interfered object for the network to make corresponding scheduling or configuration or resource management to avoid interference. The reference signal may also be a dedicated signal, and is specifically used for a certain transmission/a certain link, such as uplink/downlink transmission between a certain base station and a certain user equipment in a ground network, uplink/downlink transmission between a certain satellite and a certain user equipment in a non-ground network, and the like. One base station/user equipment/satellite/aerial vehicle may not know the reference signal configured by another base station/user equipment/satellite/aerial vehicle. The reference signals configured by the interference sources (base station/user equipment/satellite/aircraft) that may be encountered by a base station/user equipment/satellite/aircraft may be signaled (e.g., various types of signaling at layer 3/2/1). When the base station/user equipment/satellite/aircraft demodulates the reference signal configured by the interference source (base station/user equipment/satellite/aircraft) from the interference signal, the base station/user equipment/satellite/aircraft can know from which base station/user equipment/satellite/aircraft the interference originates, and can report the interference condition to the network for making corresponding scheduling or configuration or resource management to avoid the interference.

The reference signal may also be a new reference signal specifically introduced for terrestrial network/non-terrestrial network interference management. Without loss of generality, the present invention names the newly introduced reference signal as a spatial interference management reference signal (SPACE INTERFERENCE MANAGEMENT REFERENCE SIGNAL, SIM-RS). The resources occupied by the spatial interference management reference signal include time domain resources, frequency domain resources, code domain/sequence resources, and the like. In the time domain, the spatial interference management reference signal may be transmitted periodically, semi-statically (with layer 1/2 signaling activation/deactivation), and/or dynamically. Different spatial interference management reference signals may be configured with different period and/or time domain offsets (time offsets). In the frequency domain, the spatial interference management reference signal resources are determined by subcarrier spacing and/or bandwidth (number of resource blocks) and/or resource block/subcarrier location/index, etc. The resources in the frequency domain may determine the sequence length of the spatial interference management reference signal and vice versa. Different spatial interference management reference signals may use different sequences in the code domain. The spatial interference management reference signal may directly/indirectly carry certain information. The identity information and/or the interfered condition (e.g. interference strength/position/interfered time slot/resource block/OFDM symbol, etc.) of the interfering source/interfered source may be determined, for example, by indexing/offset/value of the time domain resource/frequency domain resource/sequence.

The spatial interference management reference signals can be divided into two categories according to the interference and interfered condition. One type is transmitted by an interference source (base station/user equipment/satellite/aircraft), so that an interfered object and/or a network can detect the existence of interference, and the interfered object and/or the network can acquire the interference source (interference source identity information). The other type is transmitted by the interfered object (base station/user equipment/satellite/aircraft), because the interference is usually mutual, and the spatial interference management reference signal transmitted by the interfered object can enable the interference source and/or the network to know the existence of the interference, and also enable the interference source and/or the network to know the identity information and/or the interfered condition of the interfered object.

The spatial interference management reference signals can be divided into two classes according to the communication scenario. One class is transmitted by base stations/user equipment of the terrestrial network. The other class is transmitted by satellite/aircraft/user equipment of a non-terrestrial network. The two types of spatial interference management reference signals can enable a ground network and a non-ground network to acquire interference conditions between each other.

The spatial interference management reference signals can be divided into two types according to uplink and downlink. One type is transmitted in uplink transmissions. The other is sent in a downlink transmission.

The above classifications of spatial interference management reference signals may be combined arbitrarily.

The interference source (base station/user equipment/satellite/aircraft) may actively transmit spatial interference management reference signals. For example, in an area/period of potential co-channel interference, an interference source (base station/user equipment/satellite/aircraft) may actively transmit a spatial interference management reference signal, so that an interfered object and/or a network may detect the existence of interference, and also may obtain an interference source (interference source identity information) by the interfered object and/or the network.

The interfered source (base station/user equipment/satellite/aircraft) may send a spatial interference management reference signal after detecting the presence of interference. For example, after detecting the existence of interference, the interfered source (base station/user equipment/satellite/aircraft) may send a spatial interference management reference signal, because the interference is usually mutual, and the spatial interference management reference signal sent by the interfered object may make the interference source and/or the network learn about the existence of interference, and also make the interference source and/or the network learn about the identity information and/or the interfered condition of the interfered object.

The interference source (base station/user equipment/satellite/aircraft) may transmit the spatial interference management reference signal after detecting the spatial interference management reference signal transmitted by the interfered object. The spatial interference management reference signal sent by the interference source (base station/user equipment/satellite/aircraft) can thus enable the interfered object and/or network to detect that interference still exists, can enable the interfered object and/or network to acquire the interference source (interference source identity information), and can also enable the interfered object and/or network to know the strategy of interference avoidance/cancellation that the interference source has realized the occurrence of the interference and/or adopted.

The interfered object (base station/user equipment/satellite/aircraft) may transmit the spatial interference management reference signal after detecting the spatial interference management reference signal transmitted by the interfering source. The spatial interference management reference signal sent by the interfered object (base station/user equipment/satellite/aircraft) can enable the interference source and/or network to detect the existence of interference, can enable the interfered object and/or network to acquire the interference source (interference source identity information), and can enable the interference source and/or network to know the action effect or other information of the current interference avoidance/cancellation strategy.

Spatial interference management may be centralized, e.g., interfered objects (base station/user equipment/satellite/aircraft) and/or sources of interference (base station/user equipment/satellite/aircraft) may be centrally scheduled and managed by a network and/or operation and maintenance management (Operation Administration AND MAINTENANCE, OAM) system to avoid interference and/or mitigate interference. For example, after the interfered object (base station/user equipment/satellite/aircraft) detects the spatial interference management reference signal sent by the interference source, the interfered object can learn from which base station/user equipment/satellite/aircraft the interference originates, and can report the interference condition to an operation and maintenance management (Operation Administration AND MAINTENANCE, OAM) system for the OAM to make corresponding scheduling or configuration or resource management so as to avoid interference. After the interference source (base station/user equipment/satellite/aircraft) detects the spatial interference management reference signal sent by the interfered object, the interference source can learn which base station/user equipment/satellite/aircraft receives the interference, and can report the interference condition to an operation maintenance management (Operation Administration AND MAINTENANCE, OAM) system for the OAM to make corresponding scheduling or configuration or resource management so as to avoid interference.

Spatial interference management may be distributed, e.g., the interfered objects (base station/user equipment/satellite/aerial vehicle) and/or the sources of interference (base station/user equipment/satellite/aerial vehicle) may adjust themselves to avoid interference and/or mitigate interference upon detecting the presence of interference. For example, after the interfered object (base station/user equipment/satellite/aircraft) detects the spatial interference management reference signal sent by the interference source, the interfered object may interrupt the corresponding communication service, and may also adjust the receiving strategy and/or manner, such as adjusting the receiving beam direction, and adjusting the resources of the time domain/frequency domain/spatial domain of the received data/signaling. After the interference source (base station/user equipment/satellite/aircraft) detects the spatial interference management reference signal sent by the interfered object, the interference source can interrupt the corresponding communication service, and can also adjust the transmission strategy and/or mode, such as adjusting the direction of a transmission beam, adjusting the transmission power, and adjusting the time domain/frequency domain/spatial domain resources of received data/signaling.

The remote interference management system based on the user equipment, the satellite equipment and the base station provided by the invention can be realized through the step flow in the remote interference management method based on the user equipment, the satellite equipment and the base station. The remote interference management method based on the user equipment, the satellite equipment and the base station can be understood by those skilled in the art as a preferred example of the remote interference management system based on the user equipment, the satellite equipment and the base station.

Those skilled in the art will appreciate that the invention provides a system and its individual devices, modules, units, etc. that can be implemented entirely by logic programming of method steps, in addition to being implemented as pure computer readable program code, in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers, etc. Therefore, the system and the devices, modules and units thereof provided by the invention can be regarded as a hardware component, and the devices, modules and units for realizing various functions included in the system can be regarded as structures in the hardware component, and the devices, modules and units for realizing various functions can be regarded as structures in the hardware component as well as software modules for realizing the method.

The foregoing describes specific embodiments of the present application. It is to be understood that the application is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the application. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.

Claims

1. A remote interference management method based on user equipment, satellite equipment and a base station is characterized by comprising the steps of demodulating a reference signal from interference through a configured reference signal when co-channel interference exists between a ground network and a non-ground network, acquiring a source of co-channel interference based on the currently demodulated reference signal, reporting the currently interfered condition and the source of co-channel interference, and enabling the network to make corresponding adjustment including scheduling, configuration or resource management so as to avoid interference;

2. The method for remote interference management based on user equipment, satellite equipment and base station according to claim 1, wherein the reference signals comprise a synchronization signal SSB in 4G and/or 5G, a tracking reference signal TRS, a demodulation reference signal DM-RS, a reference signal CSI-RS for channel estimation, a reference signal CSI-IM for interference measurement and a reference signal PTRS for phase tracking;

The reference signals are public signals and/or special signals;

3. The method for remote interference management based on user equipment, satellite equipment and base station of claim 2 wherein the reference signals further comprise spatial interference management reference signals, wherein the spatial interference management reference signals are new reference signals introduced for terrestrial network/non-terrestrial network interference management, and wherein the resources occupied by the spatial interference management reference signals comprise time domain resources, frequency domain resources and code domain/sequence resources;

4. A remote interference management method based on user equipment, satellite equipment and base station according to claim 3, wherein the spatial interference management reference signals are divided into two categories according to interference and interfered conditions, including one category being transmitted by an interference source, letting an interfered object and/or a network detect the existence of interference, letting the interfered object and/or the network acquire an interference source, and the other category being transmitted by an interfered object, because interference is usually mutual, the spatial interference management reference signals transmitted by the interfered object let the interference source and/or the network acquire the existence of interference, and let the interference source and/or the network acquire the identity information and/or the interfered condition of the interfered object.

5. A method for remote interference management based on user equipment, satellite equipment and base station according to claim 3, wherein the spatial interference management reference signals are divided into two categories according to different communication scenarios, including one category being transmitted by base station/user equipment of ground network and the other category being transmitted by satellite/aircraft/user equipment of non-ground network, and the two categories of spatial interference management reference signals are used for the ground network and the non-ground network to acquire interference conditions between each other.

6. The method for remote interference management based on user equipment, satellite equipment and base station according to claim 3, wherein the spatial interference management reference signals are divided into two types according to uplink and downlink, including one type being transmitted in uplink transmission and the other type being transmitted in downlink transmission.

7. The method of claim 3, wherein the interference source actively transmits the spatial interference management reference signal, and the interfered source transmits the spatial interference management reference signal after detecting the existence of the interference.

8. A remote interference management system based on user equipment, satellite equipment and a base station is characterized by comprising the steps of demodulating a reference signal from interference through a configured reference signal when co-channel interference exists between a ground network and a non-ground network, acquiring a source of co-channel interference based on the currently demodulated reference signal, reporting the currently interfered condition and the source of co-channel interference, and enabling the network to make corresponding adjustment including scheduling, configuration or resource management so as to avoid interference;

9. The remote interference management system based on user equipment, satellite equipment and base station according to claim 8, comprising the reference signals comprising a synchronization signal SSB in 4G and/or 5G, a tracking reference signal TRS, a demodulation reference signal DM-RS, a reference signal CSI-RS for channel estimation, a reference signal CSI-IM for interference measurement and a reference signal PTRS for phase tracking;

The reference signals are public signals and/or special signals;