CN112425084B

CN112425084B - Techniques for interference management

Info

Publication number: CN112425084B
Application number: CN201880095716.0A
Authority: CN
Inventors: 马里奥·凯斯坦尼达; 理查德·斯特林-加拉赫; 罗健; 栗忠峰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-07-17
Filing date: 2018-07-17
Publication date: 2022-05-24
Anticipated expiration: 2038-07-17
Also published as: WO2020015817A1; CN112425084A

Abstract

The present disclosure relates to a processing device for determining a set of High Risk Interference Beams (HRIBs), in particular transceiving points TRP, wherein the processing device is configured to: a set of HRIBs is determined from a set of one or more interfering beams. The disclosure also relates to a transceiving point, in particular an interference emitting device, comprising such a processing device, and to a processing device, in particular a transceiving point (TRP), using the set of HRIBs for beam pair selection.

Description

Techniques for interference management

Technical Field

The present disclosure relates to techniques for interference management in a beamforming communication network, and in particular in a 5G New Radio (NR) communication system. In particular, the present disclosure relates to a transmit-receive point (TRP) establishing a communication link based on information related to a set of High Risk Interference Beams (HRIBs), a processing device thereof, and a corresponding method.

Background

To meet the demand for higher data rates, a large amount of the available bandwidth on the high frequency band (>6GHz) can be utilized. However, to combat the effects of propagation at higher frequencies, beamforming may be employed at the transmit (Tx) and receive (Rx) devices. In order to establish a beam pair link for communication between the Tx device and the Rx device, it is necessary to select an appropriate Tx beam at the Tx device 120 and an Rx beam at the Rx device 140, for example, through a beam scanning procedure. The best beam pair (Tx beam, Rx beam) is typically selected, e.g., by UE140 in fig. 1, based on signal strength (i.e., based on SNR), and therefore interference from interfering Tx device 110 is not considered. However, ignoring such interference at the Rx device 140 may result in selecting a beam pair (specifically Rx beam 141) that may receive strong interference 112 and result in a low SINR for transmission.

Disclosure of Invention

It is an object of the present invention to provide an efficient technique for interference management in beam-formed communication (beam-formed communication) to reduce or even avoid interference, thereby improving the quality of the communication link.

The above object is achieved by the features of the independent claims. Other embodiments are apparent from the dependent claims, the description and the drawings.

As described below, the basic idea of the present invention is to apply an efficient interference management scheme that relies on information about a set of High Risk Interference Beams (HRIBs). The above described interference management scheme comprises two main aspects.

A first main aspect is to determine the set of Tx beams of interfering Tx devices over a set of resource blocks, which may cause interference at the Rx devices (interfered Rx devices). Tx beams from interfering Tx devices that may cause interference at the Rx device for a set of resource blocks are referred to as "high risk interference beams" (HRIBs). A set of Resource Blocks (RBs) refers to a set of time-frequency resources (not necessarily contiguous) allocated for transmission of Tx devices, similar to a resource block group or a precoding resource block group in LTE.

The second main aspect is to establish a communication link, in particular a beam pair link, between another Tx device (serving Tx device) and the interfered Rx device using the HRIB. The interfering Tx device may be an interfering TRP or an interfering UE in an aggressor cell. The interfered Rx device may be a TRP in a victim cell (victim cell) that is receiving uplink transmission, or a UE in the victim cell that is not connected to the interfering Tx device and is receiving downlink transmission. The other Tx device may be a serving TRP transmitted in downlink to the victim UE or a UE transmitted in uplink to the serving TRP in the victim cell.

Two main aspects of the disclosed interference management scheme may be performed as follows. The interfering Tx device first determines the HRIB on a set of resource blocks and then signals the HRIB to the serving TRP in the victim cell. If the serving TRP in the victim cell is an interfered Rx device, it may use the HRIB described above for interference management in the uplink. If the interfered Rx device is a UE in the victim cell, the serving TRP in the victim cell may decide which of the received HRIBs to send to the UE, e.g., only a subset of the received HRIBs may be sent to the UE. As an interfered Rx device, the UE may use the signaled HRIB for interference management in the downlink.

Using an HRIB may enable an efficient interference management scheme with lower signaling overhead and frequency compared to the prior art. In addition, interference measurements need not be made at the interfering Tx devices, and furthermore, the interfering Tx devices are not limited to using the reported HRIBs on a given set of resource blocks.

The disclosed interference management scheme is particularly relevant to 5G NR standardization.

Thus, the main concept of the present invention is to determine, signal, and use the HRIBs (set of possible interfering Tx beams) of interfering Tx devices on a set of resource blocks by the interfered Rx devices. The HRIB may be determined at the interfering Tx device as a Tx beam of the interfering Tx device having a high beam usage probability on the set of resource blocks, or as a Tx beam of the interfering Tx device having a high beam usage probability on the set of resource blocks and being likely to generate interference at the interfering Rx device. The HRIB is then signaled to the serving TRP in the victim cell, which may use this information for interference management and/or selecting the beam pair link for uplink transmission if the interfered Rx device is the serving TRP. If the interfered Rx device is a UE in the victim cell, the serving TRP may decide which of the received HRIBs to send to the UE, so that the UE may use the signaled HRIBs in selecting a beam pair link for downlink transmission.

In general, the HRIB may be used to select a beam pair link for transmission based on interference measurements to account for potential interference at the interfered Rx device. For example, the interfered Rx device may avoid receiving potential interference from interfering Tx beams in the set of HRIBs through a given Rx beam by selecting another Rx beam.

TRP, transmitting device, and receiving device will be described in the following sections. A transmitting device is a device for sending a transmission and a receiving device is a device for receiving a transmission. The transmitting device and the receiving device may be implemented in a single device; such devices may be referred to as Transmit and Receive Points (TRPs). Examples of the TRP include an access node, an evolved NodeB (eNB), a Base Station (BS), a NodeB, a master eNB (MeNB), a secondary eNB (SeNB), a remote radio head, an access point, a User Equipment (UE), a mobile device, a mobile station, a terminal, and the like. When referring to interfering TX devices and interfered Rx devices, it is actually meant potentially interfering TX devices and potentially interfered Rx devices.

For a detailed description of the present invention, the following terms, abbreviations, and descriptions will be used:

the UE: user equipment (user equipment)

BS: base station (base station), eNodeB, gNodeB

TRP: transmit-receive-point

HRIB: high risk interference beam (high risk interference beam)

SNR: signal-to-noise ratio (signal-to-noise ratio)

CSI-RS: channel state information reference signal (channel state information-reference signal)

Tx: transmitting (transmit)

Rx: receiving (receive)

And (3) SSB: synchronizing signal block (synchronization signal block)

SRS: sounding reference signal (sounding reference signal)

According to a first aspect, the present invention relates to a processing device for determining a set of high risk interference beams HRIB, in particular transceiving points TRP, wherein the processing device is configured to: determining a set of HRIBs from a set of one or more interfering beams, wherein the set of HRIBs is determined based on statistics of usage of the one or more interfering beams.

Interference management schemes with lower signaling overhead and frequency can be achieved using the HRIB compared to the prior art. In addition, interference measurements need not be made at the interfering Tx devices, and furthermore, the interfering Tx devices are not limited to using the reported HRIBs on a given set of resource blocks.

The beams transmitted by the serving transmitting device and devices other than the receiving device are referred to herein as interfering beams, regardless of whether the receiving device actually receives the signals transmitted through the interfering beams.

The statistics may include probabilities of using the one or more interfering beams based on past and/or expected uses of the one or more interfering beams.

In the present disclosure, it is understood that each beam may provide a set of one or more resource blocks or groups of resource blocks. A resource block is a block in the time-frequency domain. It should also be understood that each operation described herein involving beams may be performed for a certain set of one or more resource blocks.

By using statistics of the usage of interfering beams (i.e., the probability that an interfering Tx device uses its Tx beam) to determine an HRIB, such a processing device provides an efficient solution for interference management in mobile wireless communications. Exploiting the HRIBs available at the interfered Rx device allows the interfered Rx device to take into account the potential interference that may be received on the different Rx beams without any explicit coordination with the interfering Tx device.

In an exemplary embodiment of the processing device, the statistics are based on past use and/or expected use of the one or more interfering beams.

Such statistics can be readily determined since past usage was available at the processing device and the expected usage can be determined by evaluating the scheduling of interfering beams.

In an exemplary embodiment of the processing device, the set of HRIBs is determined for a set of resource blocks.

This has the advantage that the statistics of the use of interfering beams and the frequency dependency of the scheduling decisions of the set of resource blocks can be exploited.

In an exemplary embodiment of the processing device, the set of HRIBs is determined based further on one or more potential interference impact values of the one or more interfering beams.

The potential interference impact value may be based on the environment, e.g. the location of the victim cell relative to the interfering Tx device transmitting the interfering beam. The potential interference impact value may be further based on feedback from the victim device (e.g., the interfered Rx device) relating to interfering beams that may have a high interference impact on the victim device.

In an exemplary embodiment of the processing device, the set of HRIBs is determined for uplink transmission or for downlink transmission.

The interfering Tx device may narrow the selection of the set of HRIBs based on this information, i.e. distinguish between the Tx interference beam of a TRP (located at a particular point in the cell) in the uplink and the Tx interference beam of a UE (located in the cell) in the downlink.

According to a second aspect, the present invention relates to a transceiving point TRP, in particular an interference transmitting device, comprising a processing device according to the first aspect or any implementation thereof.

Such TRP may efficiently determine HRIB, i.e. a high risk beam interfering with the transmission to the Rx device. This provides the following advantages: rx devices informed of such an HRIB can select one Rx beam if it is likely that the other Rx beam will receive interference, thus making the transmission more reliable.

The transmitting device may include, for example, a signal processor, a transmitter, and an antenna. Similarly, a receiving device may include, for example, a signal processor, a transmitter, and an antenna.

It is to be understood that the word "interference" in the expressions "interfering transmitting device" and "interfering transmitting beam" should be interpreted as "potential interference".

In an exemplary embodiment of a TRP, the TRP is used to generate one or more transmit beams and provides statistics on the use of the one or more transmit beams.

This has the advantage that the expected use of multiple transmit beams can be compared with interference.

In an exemplary embodiment of the TRP, the TRP is used to send a set of HRIBs to another TRP, in particular another base station.

This has the advantage that the HRIB can be informed of TRPs in neighbouring cells in the vicinity of interfering TRPs.

In an exemplary embodiment of the TRP, the TRP is used to transmit a configuration of a pilot signal to another TRP.

This has the advantage that the configuration of sending a pilot signal to another TRP enables interference measurements in the victim cell.

According to a third aspect, the present invention relates to a processing device for beam pair selection, in particular a processing device for a transreceiving point TRP, wherein the processing device is configured to: selecting a beam pair from a set of candidate beam pairs for establishing a communication link from a serving transmitting device to a receiving device via the selected beam pair, wherein each of the candidate beam pairs comprises a transmitting beam of the serving transmitting device and a receiving beam of the receiving device, wherein the selecting is based on a set of high risk interference beams HRIBs, in particular on the set of HRIBs determined by the processing device according to the first aspect or any implementation thereof.

For example, a set of HRIBs may be determined for a set of resource blocks.

The set of candidate beam pairs may be a finite set or an infinite set. In particular, the set of beam pairs may be contiguous. In one embodiment, "selecting" includes determining a geometric characteristic of the receive beam and/or a geometric characteristic of the transmit beam. In particular, the geometric feature may comprise a beam direction. For example, the geometric features may also include beamwidth.

Such a processing device can be used flexibly. The processing device may for example operate within the transmitting device or within the receiving device. In particular, the processing device may operate in a base station or access point or User Equipment (UE). The processing device may operate in, for example, an access point or a transceiver point of a base station or UE that may transmit and/or receive.

In an exemplary embodiment of the processing device, the beam pair selection is based on signal measurements of one or more interfering beams at the receiving device.

Beam pairs may be selected based on the set of HRIBs only. However, beam pair selection using other interfering beams than HRIB may be considered.

This has the advantage that the beam pair selection can be made accurately, since detailed information about the interfering beams is available.

In an exemplary embodiment of the processing device, the processing device is configured to select a beam pair from the set of candidate beam pairs (i, j) based on: determining a fraction SCR (i, j) for each of the candidate beam pairs based on the set of HRIBs; and selecting the beam pair with the highest score from the candidate beam pair set.

This has the advantage that a certain amount, i.e. fraction SCR (i, j), can be efficiently determined for beam selection. Therefore, the processing device can easily and efficiently perform beam selection.

In an exemplary embodiment of the processing device, the processing device is adapted to determine the respective fraction SCR (i, j) of each of the above mentioned candidate beam pairs (i, j) further based on: a signal strength descriptor for the respective candidate beam pair; and one or more signal strength descriptors of one or more interfering beam pairs (i, k), each of said one or more interfering beam pairs comprising a receiving beam (i) of a respective candidate beam pair and one (k) of said interfering transmit beams.

The signal strength descriptor of a beam pair may be a defined, estimated, or measured signal strength specifying a signal received via the beam pair or any kind of information related to the signal strength described above. The signal strength may be, for example, a signal-to-noise ratio (SNR).

This has the advantage that the signal strength can be calculated efficiently and the beam selection can be handled efficiently.

In an exemplary embodiment of the treatment apparatus, the fraction SCR (i, j) is defined as follows:

wherein S is_i，jRepresenting the signal strength of a beam pair formed by the jth transmit beam from the transmitting device and the ith receive beam from the receiving device, I_i，kExpressed as the signal strength of the beam pair formed by the kth interfering transmit beam and the ith receive beam of the receiving device, "Set of HRIBs" represents the Set of HRIBs,

representing the variance of the noise.

The score defined in this way can be easily calculated and efficient interference management can be achieved.

In an exemplary embodiment of the processing device, the processing device is adapted to distinguish an interfering transmission beam of an interfering transmitting device from a transmission beam of a serving transmitting device based on a transmitting device specific pilot signal.

This has the advantage that such a transmitting device specific pilot signal allows an easy separation of the interfering signal and the service signal at the Rx device.

According to a fourth aspect, the present invention relates to a transceiving point, TRP, in particular a serving TRP, in particular a base station, for: requesting information, in particular a TRP according to the second aspect or any embodiment thereof, identifying a set of high risk interference beams HRIB, from an interfering transmitting device, wherein the information is based on statistics of usage of the one or more interfering beams by the interfering transmitting device; receiving information about the set of HRIBs from an interfering transmitting device; and forwarding information about the set of HRIBs to another TRP.

Interference management schemes with lower signaling overhead and frequency can be achieved using the HRIB compared to the prior art. In addition, interference measurements need not be made at interfering Tx devices, and furthermore, information of this set of HRIBs can be easily distributed to TRPs in the vicinity of adjacent TRPs or interfering transmitting devices.

The TRP may request an indication of the set of HRIBs for a set of resource blocks. The group may include one or more resource blocks.

The TRP may be used to receive information identifying an HRIB for a set of resource blocks from an interfering transmitting device.

In an exemplary embodiment of the TRP, the TRP is for: the method comprises receiving information identifying an HRIB of a set of resource blocks from an interfering transmitting device, forwarding information identifying a set of HRIBs, or at least a subset of HRIBs, of the set of resource blocks to a second TRP, in particular a user equipment, such that the second TRP selects a beam pair based on the set of HRIBs, and communicates with the second TRP over the selected beam pair.

The transceiving point may choose which HRIBs to signal to the second transceiving point, i.e. the transceiving point may not need to forward all HRIBs (but only a subset of HRIBs) to the second transceiving point.

In an exemplary embodiment of the TRP, the TRP is used to indicate whether the set of HRIBs is determined for uplink or downlink transmissions.

In an exemplary embodiment of the TRP, the TRP is used to transmit information to an interfering transmitting device to determine the potential interference impact of one or more interfering beams of the interfering transmitting device.

This feature specifies some signaling from the victim cell to the interfering Tx devices so that the interfering Tx devices have more information to determine the interference impact that is used to determine the HRIB. The information may include interference values over a long period (averaged over multiple UEs and resources), a set of beams with high interference, the geographical location of the UE.

According to a fifth aspect, the invention relates to an interference aware beam selection method, the method comprising: determining a set of high risk interference beams HRIB from a set of one or more interference beams, wherein the set of HRIB is determined based on statistics of usage of the one or more interference beams; and selecting a beam pair from a set of candidate beam pairs (i, j) for establishing a communication link from a serving transmitting device to a receiving device via the selected beam pair, wherein each of said candidate beam pairs (i, j) comprises a transmitting beam (j) of the serving transmitting device and a receiving beam (i) of the receiving device, wherein said selecting is based on a set of high risk interference beams HRIB.

An advantage of this approach is that interference management schemes with lower signaling overhead and frequency can be achieved using the HRIB compared to the prior art. In addition, interference measurements need not be made at the interfering Tx devices, and furthermore, the interfering Tx devices are not limited to using the reported HRIBs on a given set of resource blocks.

The beams transmitted by devices other than the serving transmitting device and the receiving device are referred to herein as interfering beams, regardless of whether the receiving device actually receives the interfering beams.

Each beam may provide a set of one or more resource blocks or groups of resource blocks. A resource block is a block in the time-frequency domain. It should also be understood that each operation described herein involving beams may be performed for a certain set of one or more resource blocks.

The statistics may be based on past use and/or expected use of the one or more interfering beams.

The set of HRIBs may be determined for a set of resource blocks.

The set of HRIBs may be determined based on one or more potential interference impact values of the one or more interfering beams.

The potential interference impact value may be based on the environment, e.g. the location of the victim cell relative to the interfering Tx device transmitting the interfering beam. The potential interference impact value may further be based on feedback from the victim device regarding interfering beams that may have a high interference impact on the victim device.

The beam pair selection may be further based on signal measurements of one or more interfering beams at the receiving device.

In principle, beam pairs may be selected based on the set of HRIBs only. However, other interfering beams than HRIBs may be used for beam pair selection.

The set of HRIBs may be determined for uplink or downlink transmissions.

Drawings

Other embodiments of the invention will be described with reference to the following drawings, in which:

fig. 1 shows a schematic diagram illustrating beamformed communication in an interference scenario where aggressor cell 101 interferes with victim cell 102;

fig. 2 shows a schematic diagram illustrating an example of determining a High Risk Interference Beam (HRIB) for downlink transmission in a victim cell 102;

fig. 3 shows a flow chart of a first embodiment of an interference management scheme applied to TRP-UE interference;

fig. 4 shows a flow diagram of a second embodiment of an interference management scheme applied to TRP-UE interference;

fig. 5 shows a flow diagram of an embodiment of an interference management scheme applied to TRP-TRP interference;

fig. 6 shows a flow diagram of an embodiment of an interference management scheme applied to UE-TRP interference;

figure 7 shows a flow diagram of an embodiment of an interference management scheme applied to UE-UE interference;

figure 8 shows a signalling diagram of an embodiment of an interference management scheme applied to TRP-UE interference;

fig. 9 shows a signaling diagram of an embodiment of an interference management scheme applied to TRP-TRP interference;

fig. 10 shows a signaling diagram of an embodiment of an interference management scheme applied to UE-TRP interference;

figure 11 shows a signalling diagram of an embodiment of an interference management scheme applied to UE-UE interference; and

fig. 12 shows a block diagram of an exemplary method 1200 of interference aware beam selection.

Detailed Description

In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific aspects in which the disclosure may be practiced. It is to be understood that other aspects may be utilized and structural or logical changes may be made without departing from the scope of the present disclosure. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present disclosure is defined by the appended claims.

It is to be understood that the description made in connection with the method described may equally apply to the corresponding device or system performing the method, and vice versa. For example, if a particular method step is described, a corresponding device may include such a unit even if a unit performing the described method step is not explicitly described or shown in the figures. Furthermore, it is to be understood that features of the various exemplary aspects described herein may be combined with each other, unless specifically noted otherwise.

The methods and apparatus described herein may also be implemented in wireless communication networks based on mobile communication standards similar to, for example, LTE, specifically 4.5G, 5G NR, and higher releases. The methods and apparatus described herein may also be implemented in a wireless communication network, in particular a communication network similar to the WiFi communication standard according to IEEE 802.11. The described devices may include integrated circuits and/or passive devices and may be fabricated according to various techniques. For example, the circuits may be designed as logic integrated circuits, analog integrated circuits, mixed signal integrated circuits, optical circuits, memory circuits, and/or integrated passive devices.

The devices described herein may be used to transmit and/or receive radio signals. The radio signal may be or may comprise a radio frequency signal transmitted by a radio transmission device (or radio transmitter or transmitter).

The devices and systems described herein may include a processor, a memory, and a transceiver, i.e., a transmitter and/or a receiver. In the following description, the terms "processor" or "processing device" describe any device that can be used to process a particular task (or block or step). The processor or processing device may be a single processor or multi-core processor, or may comprise a set of processors, or may comprise a processing device. A processor or processing device may process software or firmware or applications, etc.

Hereinafter, a base station and a user equipment are described. Examples of a base station may include an access node, an evolved NodeB (enb), a gNB, a NodeB, a master enb (menb), a slave enb (senb), a remote radio head, and an access point.

Fig. 1 shows a schematic diagram illustrating beamformed communication in an interference scenario where aggressor cell 101 interferes with victim cell 102.

The serving TRP120 in fig. 1 may establish a transmission to UE1, 140 in victim cell 102 if the serving TRP120 (serving Tx device) is transmitted through Tx beam #3 and UE1, 140 (interfered Rx device) is received through Rx beam # 4. Although the transmission to the link through this beam may have a high SNR, if an interfering TRP110 (interfering Tx device) in the aggressor cell 101 is transmitted through the Tx beam #9, 112 (e.g., to

UEs

2, 130 in the aggressor cell 101), the transmission to the link through this beam may have a low SINR.

If the Rx device 140 selects another beam pair for transmission (assuming the Rx device 140 knows the Tx beam 112 that the interfering Tx device 110 will use), interference from the interfering Tx device 110 can be avoided. However, the Rx device 140 is typically unaware of the Tx beam 112 that the interfering Tx device 110 will use. The interference management scheme proposed in the present disclosure may be used to provide the Rx device 140 with sufficient information about the Tx beams 112 that the interfering Tx device 110 may use, so that the Rx device 140 can select other beam pairs for transmission, thereby improving the beamformed communication.

In the following, it will be explained in detail how to determine the HRIB at the interfering Tx device 110 and how to use the HRIB later at the interfered Rx device 140, e.g. for TRP or UE in the victim cell 102.

Fig. 2 shows a schematic diagram illustrating an example of determining a High Risk Interference Beam (HRIB) for downlink transmission in a victim cell 102.

The HRIB206 may be determined at the interfering Tx device 110 based on the Tx beams 111 of the interfering Tx device 110 (specifically statistics of usage 203 over a set of resource blocks). In addition, the HRIB206 may also be determined taking into account the potential interference impact 204 of the Tx beam 111 of the interfering Tx device 110 at the interfered Rx device (e.g., UE1, 140 shown in fig. 1).

The statistics of the usage 203 of the Tx beams 111 of the interfering Tx device 110 on a set of resource blocks may be determined at the interfering Tx device 110 based on past usage of the Tx beams 111 by the interfering Tx device 110 on the set of resource blocks and/or based on expected usage of the Tx beams 111 by the interfering Tx device 110 on the set of resource blocks, e.g. by considering predefined scheduling decisions or predictive capabilities (e.g. for UE tracking) of the interfering Tx device 110. For example, a TRP may determine the probability of using a Tx beam on a given set of resource blocks within a particular time window, based on the number of times the TRP used the Tx beam on that set of resource blocks, e.g., for past transmissions to UEs in its cell.

For example in fig. 2, the probability that the interfering TRP110 in aggressing cell 101 uses

Tx beam #

6, 7, 8, 9 on a given set of resource blocks is high based on past transmissions to

UEs

2, 130 on the given set of resource blocks. The probability of using a Tx beam depends on the spatial distribution of the Rx devices to which the interfering Tx device 110 is transmitting, e.g., the distribution of the UEs 130 in the aggressor cell 101. Since the distribution of these Rx devices 130 is generally not static and may change over time, the probability of using Tx beams is time dependent. For example, some Tx beams of TRP in a cell may be used more frequently depending on the current UE distribution in the cell, where the UE distribution may depend on the time of day.

The potential interference impact of the Tx beam from the interfering Tx device 110 on the interfered Rx device (e.g. UE1, 140 or serving TRP120 shown in fig. 1) may be determined at the interfering Tx device 110 based on the possible transmit power and the height of the Tx beam 111, and based on the environmental information (depending on the location of the interfered Rx device 140, 120). The potential interference impact of the Tx beam 111 based on the environmental information (depending on the location of the interfered Rx devices 140, 120) may be obtained based on whether the interfered

Rx devices

140, 120 are receiving downlink or uplink transmissions, i.e. based on whether the interfered

Rx devices

140, 120 are receiving UEs 140 in the victim cell 102 that receive downlink transmissions or TRPs 120 that receive uplink transmissions. For example, the interfering Tx device 110 may determine which of its Tx beams 111 may have a higher potential interference impact on downlink transmissions in the victim cell 102, or which of its Tx beams 111 may have a higher potential interference impact on uplink transmissions in the victim cell 102, based on the location of the victim cell 102 relative to the interfering Tx device 110. For example, Tx beams #7, 8, 9, 10 of interfering TRP110 in fig. 2 may have a higher potential interference impact 204 on downlink transmissions in victim cell 102, particularly on UEs near the cell edge of victim cell 102.

The HRIB206 of the interfering Tx device 110 for a set of resource blocks may be determined at the interfering TRP110 as a Tx beam 201 on the set of resource blocks for which the interfering Tx device 110 has a high beam usage probability 203 (e.g., based on past or expected usage of the Tx beam 111). In this case, the HRIB206 may be specific to the interfering Tx device 110 and the set of resource blocks.

As shown in fig. 2, the HRIB206 may also be determined as Tx beams 201, 202 with a high beam usage probability 203 (e.g., based on past or expected usage of the Tx beams) on the set of resource blocks for the interfering Tx device 110 and a high potential interference impact 204 on the interfered Rx device 140 (e.g., based on whether the interfered Rx device 140 is receiving downlink or uplink transmissions). In this case, the HRIB206 may be specific to the interfering Tx device 110, the set of resource blocks, specific to the victim cell 102, and specific to whether the interfered

Rx devices

140, 120 in the victim cell are receiving downlink transmissions or uplink transmissions. In the example shown in fig. 2, the HRIB206 corresponds to

Tx beams #

7, 8, 9.

The interfering Tx device 110 is not limited to using any of the Tx beams 111 determined and signaled as HRIBs 206 on a given set of resource blocks.

After determining 205 the HRIB206 at the interfering Tx device 110, the interfering Tx device 110 signals the HRIB206 on a set of resource blocks to the serving TRP120 in the victim cell 102. If the serving TRP120 is an interfered Rx device, it may utilize the HRIB206 in selecting a beam pair link (specifically an Rx beam) for uplink transmission. For example, if the serving TRP120 wants to use an Rx beam, but determines that interference from an interfering Tx beam in the set of HRIBs 206 may be received using this Rx beam based on interference measurements, the serving TRP120 may decide to use another Rx beam to avoid potential interference.

If the interfered Rx device is a UE (e.g., UE1, 140) in victim cell 102, serving TRP120 may decide which of the received HRIBs 206 to send to UE140 so that the UE may perform interference management. For example, if the serving TRP120 in the victim cell 102 has information about the location of the UE140, it may select to send only a subset of the HRIBs 206 interfering with the TRP110 to reduce signaling overhead. The serving TRP120 in victim cell 102 may also recognize that for a given UE there is no related HRIB206 on a set of resources, because the serving TRP120 may expect the UE not to receive interference from the interfering TRP110, so it may utilize this information to schedule the UE on that set of resource blocks (without signaling any HRIB206 to the UE). If the HRIB206 is signaled to the UE, the UE may use the HRIB206 when selecting the beam pair link (specifically the Rx beam) for downlink transmission from the serving TRP 120. For example, if the UE wants to use an Rx beam, but determines that interference from an interfering Tx beam in the set of HRIBs 206 may be received using this Rx beam based on interference measurements, UE140 may decide to use another Rx beam to avoid potential interference. Consider, for example, the example in fig. 1, where if UE140 is signaled that Tx beam #9 of interfering TRP110 in the aggressing cell is HRIB206, then UE1, 140 may select Rx beam #7 instead of Rx beam #4 to avoid potential interference from interfering Tx device 110.

To utilize the HRIB206 at the interfered Rx device 140, interference measurements may be used at the interfered Rx device 140. To obtain the interference measurement, the interfered Rx device 140 may use different pilot/reference/sounding signals of the interfering Tx device 110, e.g. if the interfering Tx device 110 is an interfering TRP, a Synchronization Signal Block (SSB) or CSI-RS (channel state information reference signal) is used in the aggressor cell 101. Cell-specific SSBs have been agreed to be used for neighbor cell reporting in the 5G NR. UE-specific CSI-RS may also be used to obtain interference measurements. For example, the CSI-RS allocated to a UE (e.g., UE2, 130) connected to interfering TRP110 in aggressor cell 101, e.g., near the cell edge of victim cell 102, may be used for interference measurement at interfered Rx device 140 in victim cell 102. To this end, the interfering TRP110 may share the CSI-RS configuration with the serving TRP120 of the victim cell 102. If the interfered Rx device is a UE (e.g., UE1, 140), the serving TRP120 may forward the CSI-RS configuration of the interfering TRP110 to UE140 in victim cell 102. Note that the interfered UE140 is not connected to the interfering TRP 110.

On the other hand, if the interfering Tx device 110 in the aggressor cell 101 is an interfering UE (e.g., UE2, 130) connected to the interfering TRP110 in the aggressor cell 101, the SRS used by the interfering UE130 may be used to obtain interference measurements at the interfered Rx device 140 in the victim cell 102. To this end, the interfering TRP110 may share the SRS configuration with the serving TRP120 of the victim cell 102. If the interfered Rx device is a UE (e.g., UE1, 140), the serving TRP120 may forward the SRS configuration to the interfered UE140 in victim cell 102.

To utilize the HRIB206, Tx beams 111 of interfering Tx devices 110 may be identified. However, the Tx beam 111 may not be explicitly described in the standard. However, the Tx beam 111 of the interfering Tx device 110 may be identified by an index of a signaling field or an indicator of resources, wherein the interfering Tx device 110 transmits a pilot/reference/sounding signal through the Tx beam 111. Depending on the signal used for interference measurement at the interfered Rx device 140 in the victim cell 102, the Tx beam 111 of the interfering Tx device 110 may be identified, e.g., by a Synchronization Signal Block (SSB) index, a CSI-RS resource indicator, or an SRS resource indicator. Therefore, when referring to a Tx beam or a Tx beam index in this specification, it actually refers to an identifier of the Tx beam, which is mapped to a resource indicator corresponding to the Tx beam.

Using the HRIB206 may enable an efficient interference management scheme with lower signaling overhead and frequency compared to the prior art. In addition, interference measurements need not be made at the interfering Tx device 110, and furthermore, the interfering Tx device 110 is not limited to using the reported HRIBs 206 on a given set of resource blocks.

Based on the above description, various embodiments of a transmitting device and a receiving device of a UE and a TRP and corresponding processing devices may be implemented. In the following, an exemplary representation of such a device is described.

A first processing device, in particular a processing device of a first transceiving point TRP (e.g. interfering TRP 110), may be used to determine 205 a set of high risk interfering beams HRIB 206. The first processing device is to determine a set of HRIBs 206 from the set of one or more interfering

beams

201, 202, wherein the set of HRIBs 206 is determined based on statistics 203 of usage of the one or more interfering

beams

201, 202.

The statistics 203 may be based on past usage and/or expected usage of one or more interfering beams 201. The set of HRIBs 206 may be determined for a set of resource blocks. The set of HRIBs 206 may be further determined based on one or more potential interference impact values 204 for one or more interfering

beams

201, 202, e.g. as shown in the two tables at the bottom of fig. 2. For example, the beam use probability of the TX beam #6 is 24%, the beam use probability of the TX beam #7 is 32%, the beam use probability of the TX beam #8 is 18%, the beam use probability of the TX beam #9 is 26%, and the beam use probabilities of the other TX beams #1 to #5 and the TX beam #10 are 0%, respectively. Thus, the HRIB206 is selected from these TX beams #6 to # 9. Further, the selection may be based on the potential interference impact 204 on the DL in the victim cell. In this example, TX beams #7 to #10 have high potential interference impact, while the other TX beams #1 to #6 have low potential interference impact. Therefore, the HRIB206 may be selected from these TX beams #7 to # 10. As shown in the table at the bottom of fig. 2, the HRIB206 is selected from TX beams #7 to #9, taking into account these two conditions.

The set of HRIBs 206 may be determined for uplink transmissions or for downlink transmissions.

The first TRP110 (specifically, the interference transmitting apparatus shown in fig. 2) includes the above-described first processing apparatus. The first TRP110 is used to generate one or more transmit

beams

201, 111 and provides statistics 203 of the usage of the one or more transmit

beams

201, 111. The first TRP may be used to send a set of HRIBs 206 to another TRP120, in particular to another base station. A first TRP110 may be a configuration for transmitting a pilot signal to another TRP, 120.

A second processing device, in particular a processing device of a second transmission/reception point TRP, in particular of UE140, for selecting a beam pair from a set of candidate beam pairs (i, j) for establishing a communication link from the serving transmission device 120 to the reception device 140 via the selected beam pair, wherein each of said candidate beam pairs (i, j) comprises a transmission beam (j) of the serving transmission device 120 and a reception beam (i) of the reception device 140, wherein said selection is based on a set of high-risk interfering beams HRIB206, in particular on the set of HRIB206 determined by said first processing device. Such a second TRP may be the serving TRP120 or UE140 in the victim cell.

The beam pair selection may be based on, for example, signal measurements of one or more interfering beams 112 at the receiving device at UE1, 140. The second processing device may be operative to select a beam pair from the set of candidate beam pairs (i, j) based on: determining a fraction SCR (i, j) for each of the candidate beam pairs (i, j) based on the set 206 of HRIBs; and selecting the beam pair that gets the highest score from the set of candidate beam pairs (i, j).

The second processing device may be configured to determine the respective fraction SCR (i, j) for each of the aforementioned candidate beam pairs (i, j) further based on: a signal strength descriptor for the respective candidate beam pair (i, j); and one or more signal strength descriptors of one or more interfering beam pairs, each of which comprises one of the interfering transmit beam 111 and the receive beam (i) of the respective candidate beam pair (i, j). The second processing device may be used to distinguish the interfering transmission beam of the interfering transmission device 110 from the transmission beam of the serving transmission device 120 based on the transmission device specific pilot signal.

A third transceiving point TRP120, in particular a serving TRP (in particular a base station), configured to: requesting information from the interfering transmitting device 110, in particular from the first TRP as described above, identifying the set of high-risk interfering beams HRIB206, wherein the information is based on statistics of usage 203 of the one or more interfering

beams

201, 202 by the interfering transmitting device 110, receiving information about the set of HRIB206 from the interfering transmitting device 110, and forwarding the information about the set of HRIB206 to another TRP, in particular to the UE 140.

The third TRP120 may be used to: receiving information identifying an HRIB206 of a set of resource blocks from the interfering transmitting device 110, forwarding the information identifying the set of HRIBs 206 or at least a subset of the HRIBs of the set of resource blocks to a second TRP, in particular the user equipment 140, such that the second TRP selects a beam pair based on the set of HRIBs 206, and communicates with the second TRP over the selected beam pair.

The third TRP120 may be used to indicate whether the set of HRIBs 206 is determined for uplink or downlink transmissions. The third TRP120 may be used to send information to the interfering transmitting device 110 to determine potential interference impact 204 of one or more interfering beams 202 of the interfering transmitting device 110.

Depending on whether the interfering Tx device is a TRP (e.g., interfering TRP 110) or a UE (e.g., UE2, 130) in aggressor cell 101 and whether the interfered Rx device is a TRP (e.g., serving TRP 120) or a UE (e.g., UE1, 140) in victim cell 102, there may be different types of interference, namely: TRP-UE interference, TRP-TRP interference, UE-TRP interference, and UE-UE interference. Several embodiments of the disclosed interference management techniques are presented below with reference to fig. 3-11 for these different types of interference.

Fig. 3 shows a flow diagram of a first embodiment of an efficient interference management scheme applied to TRP-UE interference. The flow chart illustrates a TRP-UE interference situation, i.e., where UE C (e.g., corresponding to

UEs

1, 140 shown in fig. 1) served by a serving TRP a (e.g., corresponding to serving TRP120 shown in fig. 2) may be interfered by TRP B (e.g., corresponding to interfering TRP110 shown in fig. 2). For this embodiment, the HRIB may be determined at TRP B based on a beam usage probability of a interfering Tx beam of TRP B over a set of resource blocks. In this case, the set of HRIBs corresponds to the set of Tx beams for which the beam usage probability is above a threshold. The HRIB is sent to the serving TRPA, which then selects the HRIB to send to UE C. The selected HRIB is then sent to UE C, e.g., as described above with reference to fig. 2, which then makes beam pair selection based on the interference measurements and in view of the signaled HRIB 206.

Fig. 4 shows a flow diagram of a second embodiment of an efficient interference management scheme applied to TRP-UE interference. The flow chart illustrates a TRP-UE interference situation, i.e., where UE C (e.g., corresponding to

UEs

1, 140 shown in fig. 1) served by a serving TRP a (e.g., corresponding to serving TRP120 shown in fig. 2) may be interfered by TRP B (e.g., corresponding to interfering TRP110 shown in fig. 2). For this embodiment, the HRIB may be determined at the TRP B based on a beam usage probability of the interfering Tx beam of TRP B over a set of resource blocks and a potential interference impact of the interfering Tx beam of TRP B on the downlink transmission serving TRPA. In this case, the set of HRIBs corresponds to a set of Tx beams for which the beam usage probability is above a probability threshold and the potential interference impact is above an interference threshold. The HRIB is sent to the serving TRP a, which then selects the HRIB to send to UE C. The selected HRIB is then sent to UE C, e.g., as described above with reference to fig. 2, which then makes beam pair selection based on the interference measurements and in view of the signaled HRIB 206.

Fig. 5 shows a flow diagram of an embodiment of an efficient interference management scheme applied to TRP-TRP interference. The flow chart illustrates a TRP-TRP interference situation, i.e. where TRP a (e.g. corresponding to serving TRP120 shown in fig. 2) may be interfered with by TRP B (e.g. corresponding to interfering TRP110 shown in fig. 2). For this embodiment, the HRIB may be determined at the TRP B based on the beam usage probability of the interfering Tx beam of TRP B over a set of resource blocks and the potential interference impact of the interfering Tx beam of TRP B on the uplink transmission received at the TRPA. In this case, the set of HRIBs corresponds to a set of Tx beams for which the beam usage probability is above a probability threshold and the potential interference impact is above an interference threshold. For example, as described above with reference to fig. 2, the HRIB is sent to the serving TRPA, which then makes beam pair selection based on interference measurements and in view of the signaled HRIB 206.

Fig. 6 shows a flow diagram of an embodiment of an efficient interference management scheme applied to UE-TRP interference. The flow diagram illustrates a UE-TRP interference scenario, i.e., where TRP a (e.g., corresponding to serving TRP120 shown in fig. 2) may be interfered by UE B (e.g., corresponding to

UEs

2, 130 shown in fig. 2) served by TRPD (e.g., corresponding to interfering TRP110 shown in fig. 2). For this embodiment, the HRIB may be determined at UE B based on the beam usage probability of the interfering UE B Tx beam over a set of resource blocks and the potential interference impact of the interfering UE B Tx beam on the uplink transmission received at the TRPA. In this case, the set of HRIBs corresponds to a set of Tx beams for which the beam usage probability is above a probability threshold and the potential interference impact is above an interference threshold. The HRIB is sent to the service TRP D of UE B, and then the service TRP D sends the HRIB to the TRPA. For example, as described above with reference to fig. 2, after receiving an HRIB, TRP a makes beam pair selection based on interference measurements and considering signaled HRIB 206.

Fig. 7 shows a flow diagram of an embodiment of an interference management scheme applied to UE-UE interference. The flow diagram illustrates a UE-UE interference scenario, i.e., where UE C (e.g., corresponding to

UEs

1, 140 shown in fig. 1) served by TRP a (e.g., corresponding to serving TRP120 shown in fig. 2) may be interfered by UE B (e.g., corresponding to

UEs

2, 130 shown in fig. 2) served by TRP D (e.g., corresponding to interfering TRP110 shown in fig. 2). For this embodiment, the HRIB may be determined at UE B based on the beam usage probability of the interfering UE B's Tx beam over a set of resource blocks and the potential interference impact of the interfering UE B's Tx beam on the downlink transmission from the serving TRPA. In this case, the set of HRIBs corresponds to a set of Tx beams for which the beam usage probability is above a probability threshold and the potential interference impact is above an interference threshold. The HRIB is sent to the serving TRP D of UE B, and then the serving TRP D sends the HRIB to the TRPA. The TRP servant D may also select the HRIB to be sent to the TRPA servant. After receiving the HRIB, the TRPA selects the HRIB to be sent to the UEC. The selected HRIB is then sent to UE C, e.g., as described above with reference to fig. 2, which then makes beam pair selection based on the interference measurements and in view of the signaled HRIB 206.

Fig. 8 shows a signaling diagram of an embodiment of an interference management scheme applied to TRP-UE interference. The signaling diagram illustrates a TRP-UE interference situation, i.e., where an interfering TRP in aggressor cell 101 (e.g., interfering TRP110 in fig. 2) may interfere with a UE in victim cell 102 (e.g.,

UEs

1, 140 shown in fig. 1). The TRP120 in the victim cell 102 requests the HRIB for DL transmission on a set of resource blocks from the interfering TRP110 in the aggressor cell 102. After receiving the HRIB, TRP120 cell 102 in victim cell selects the HRIB to send to UE140 in victim cell 102. Also shown is the signaling of the pilot signal of the interfering TRP110, which is used to enable interference measurement at UE140 in victim cell 102. Then, for example, as described above with reference to fig. 2, beam pair selection is made at the UE140 in the victim cell 102 based on the interference measurements and in view of the HRIB 206.

Fig. 9 shows a signaling diagram of an embodiment of an interference management scheme applied to TRP-TRP interference. The signaling diagram illustrates a TRP-TRP interference situation, i.e. where an interfering TRP in the aggressor cell 101 (e.g. interfering TRP110 in fig. 2) may interfere with a TRP in the victim cell 102 (e.g. serving TRP120 in fig. 2). The TRP120 in victim cell 102 requests the interfering TRP110 in aggressor cell 101 for an HRIB of an UL transmission on a set of resource blocks. Also shown is the signaling of a pilot signal interfering with the TRP110 for enabling interference measurement at the TRP120 in the victim cell 102. Then, for example, as described above with reference to fig. 2, beam pair selection is made at the TRP120 in the victim cell 102 based on the interference measurements and in view of the HRIB 206.

Fig. 10 shows a signaling diagram of an embodiment of an interference management scheme applied to UE-TRP interference. The signaling diagram illustrates a case of UE-TRP interference, i.e. where interfering UEs in the aggressor cell 101 (e.g. corresponding to UEs 2, 130 shown in fig. 2) may interfere with TRP in the victim cell 102 (e.g. corresponding to the serving TRP120 shown in fig. 2). The TRP120 in victim cell 102 requests an HRIB206 for UL transmissions on a set of resource blocks from interfering TRP110 in aggressor cell 101, and then interfering TRP110 requests an HRIB206 from interfering UE130 in aggressor cell 101. UE130 in aggressor cell 101 determines HRIB206, then sends HRIB206 to TRP110 in aggressor cell 101, then TRP110 sends HRIB206 to TRP120 in victim cell 102. The TRP110 in the aggressor cell 102 may select the HRIB206 to be sent to the TRP120 in the victim cell 102. Also shown is the signaling of a pilot signal interfering with the TRP110 for enabling interference measurement at the TRP120 in the victim cell 102. Then, beam pair selection is made at the TRP120 in the victim cell 102 based on the interference measurements and taking into account the HRIB 206.

Fig. 11 shows a signaling diagram of an embodiment of an interference management scheme applied to UE-UE interference. The signaling diagram illustrates a case of UE-UE interference, i.e., where interfering UEs (e.g., corresponding to

UEs

2, 130 shown in fig. 2) in aggressor cell 101 may interfere with UEs (e.g.,

UEs

1, 140 shown in fig. 1) in victim cell 102. The TRP120 in victim cell 102 requests the HRIB206 of the DL transmission on a set of resource blocks from the interfering TRP110 in aggressor cell 101, and then the interfering TRP110 requests the HRIB206 from the interfering UE130 in aggressor cell 101. For example, as shown above with reference to fig. 2, the UE130 in the aggressor cell 101 determines the HRIB206, then sends the HRIB206 to the TRP110 in the aggressor cell 101, and then the TRP110 sends the HRIB206 to the TRP120 in the victim cell 102. TRP110 in aggressor cell 101 may select HRIB206 to be sent to TRP120 in victim cell 102. After receiving the HRIB206, the TRP120 in victim cell 102 selects the HRIB206 to be sent to a UE in victim cell 102 (e.g., corresponding to

UEs

1, 140 shown in fig. 1). Also shown is the signaling of the pilot signal interfering with TRP110 for enabling interference measurement at UE140 in victim cell 102. Then, for example, as described above with reference to fig. 2, beam pair selection is made at the UE140 in the victim cell 102 based on the interference measurements and in view of the HRIB 206.

Fig. 12 shows a block diagram of an exemplary method 1200 of interference aware beam selection. For example, as described above with reference to fig. 2, the method 1200 comprises determining 1201 a set of high risk interfering beams HRIBs 206 from a set of one or more interfering beams 201, wherein the set of HRIBs 206 is determined based on statistics (203) of usage of the one or more interfering beams 201. For example, as described above with reference to fig. 2, the method 1200 further includes selecting a beam pair from a set of candidate beam pairs (i, j), each of which includes a transmit beam (j) of the serving transmit device 120 and a receive beam (i) of the receive device 140, to establish a communication link from the serving transmit device 120 to the receive device 140 through the selected beam pair, wherein the selection is based on the set of high-risk interference beams HRIB 206.

The present disclosure also supports a computer program product comprising computer-executable code or computer-executable instructions that, when executed, cause at least one computer to perform the execution and calculation steps described herein, in particular the steps of the above-described method. Such a computer program product may include a readable non-transitory storage medium having program code stored thereon for use by a computer. The program code may perform the processing and computing steps described herein, in particular the methods described above.

While a particular feature or aspect of the disclosure may have been disclosed with respect to only one of several implementations, such feature or aspect may be combined with one or more other features or aspects of the other implementations as may be desired and advantageous for any given or particular application. Furthermore, to the extent that the terms "includes," has, "" having, "or any other variation of these terms are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to the term" comprising. Also, the terms "exemplary," "such as," and "for example" are merely meant as examples and are not meant as best or optimal. The terms "coupled" and "connected," along with their derivatives, may be used. It will be understood that these terms are intended to indicate that two elements co-operate or interact with each other, whether or not the elements are in direct physical or electrical contact, or that the elements are not in direct contact with each other.

Although specific aspects have been illustrated and described herein, it will be appreciated by those of ordinary skill in the art that a variety of alternate and/or equivalent implementations may be substituted for the specific aspects shown and described without departing from the scope of the present invention. This application is intended to cover any adaptations or variations of the specific aspects discussed herein.

Although the elements of the claims are recited in a particular sequence with corresponding labeling, unless the claim recitations otherwise imply a particular sequence for implementing some or all of those elements, those elements are not limited to being implemented in that particular sequence.

Many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing teachings. Of course, those skilled in the art will readily recognize that there are many other applications of the present invention beyond those described herein. While the present invention has been described with reference to one or more particular embodiments, those skilled in the art will recognize that many changes may be made thereto without departing from the scope of the present invention. It is, therefore, to be understood that within the scope of the appended claims and equivalents thereto, the invention may be practiced otherwise than as specifically described herein.

Claims

1. A processing device for determining a set of high risk interference beams HRIB (206), in particular transreceiving points TRP (110), wherein the processing device is adapted to:

determining a set of HRIBs (206) on a set of resource blocks from a set of one or more interfering beams (111), wherein the set of HRIBs (206) is determined based on statistics (203) of usage of the one or more interfering beams (201), the set of resource blocks being a set of time-frequency resources allocated for the processing device;

signaling the set of HRIBs (206) to a serving TRP in a victim cell.

2. The processing apparatus according to claim 1,

wherein the statistics (203) are based on past and/or expected usage of the one or more interfering beams (201).

3. The processing apparatus according to claim 1,

wherein the set of HRIBs (206) is determined further based on one or more potential interference impact values (204) of the one or more interfering beams (202).

4. The processing apparatus according to any one of the preceding claims,

wherein the set of HRIBs (206) is determined for uplink transmission, or

Wherein the set of HRIBs (206) is determined for downlink transmissions.

5. A transreceiving point TRP (110), in particular an interference transmitting device, comprising a processing device according to any one of the preceding claims.

6. A TRP (110) according to claim 5 for generating one or more transmit beams (111) and providing statistics (203) of the usage of said one or more transmit beams (111).

7. A TRP (110) according to claim 5 for transmitting the set of HRIBs (206) to another TRP, in particular another base station.

8. The TRP (110) according to any of claims 5 to 7, a configuration for transmitting a pilot signal to another TRP.

9. A processing device for beam pair selection, in particular a processing device for a transreceiving point, TRP, wherein the processing device is configured to:

selecting a beam pair from a set of candidate beam pairs (i, j) to establish a communication link from a serving transmitting device (120) to a receiving device (140) through the selected beam pair, wherein each of the candidate beam pairs (i, j) comprises a transmit beam (j) of the serving transmitting device (120) and a receive beam (i) of the receiving device (140),

wherein the selection is based on a set of high risk interference beams HRIB (206), in particular on a set of HRIB (206) determined by a processing apparatus according to any of claims 1 to 4.

10. The processing apparatus according to claim 9, wherein,

wherein the beam pair selection is based on signal measurements of one or more interfering beams (112) at the receiving device (140).

11. The processing device of claim 9, configured to select the beam pair from the set of candidate beam pairs (i, j) based on:

determining a fraction SCR (i, j) for each of the candidate beam pairs (i, j) based on the set of HRIBs (206); and

selecting the beam pair that achieves the highest score from the set of candidate beam pairs (i, j).

12. The processing device of claim 11, configured to determine the respective fraction SCR (i, j) of each of the candidate beam pairs (i, j) further based on:

a signal strength descriptor for the respective candidate beam pair (i, j); and

one or more signal strength descriptors of one or more interfering beam pairs, each of the one or more interfering beam pairs comprising one (k) of the receive beam (i) and an interfering transmit beam (111) of a respective candidate beam pair (i, j).

13. The treatment apparatus according to claim 11 or 12, wherein the fraction SCR (i, j) is defined as follows:

wherein S is_i，jRepresenting the signal strength, I, of the beam pair formed by the jth transmit beam from the transmitting device and the ith receive beam from the receiving device_i，kRepresenting the signal strength of the beam pair formed by the kth interfering transmit beam and the ith receive beam of the receiving device, "Set of HRIBs" representing the Set of HRIBs,

representing the variance of the noise.

14. A transceiving point, TRP, (120), in particular a serving TRP, for:

requesting information from an interfering transmitting device (110), the information identifying a set of high risk interfering beams HRIB (206) on a set of resource blocks, wherein the information is based on statistics (203) of usage of one or more interfering beams (111) by the interfering transmitting device (110), the set of resource blocks being a set of time-frequency resources allocated for a processing device,

receiving the information on the set of HRIBs (206) from the interfering transmitting device (110) by signaling, an

Forwarding the information about the set of HRIBs (206) to another TRP.

15. The TRP (120) according to claim 14, for:

receiving information of the HRIB (206) identifying a set of resource blocks from the interfering transmitting device (110),

forwarding the information identifying the set of HRIBs (206) or at least a subset of the HRIBs of the set of resource blocks to a second TRP, in particular a user equipment (140), for the second TRP to select a beam pair based on the set of HRIBs (206), and

communicating with the second TRP through the selected beam pair.

16. The TRP (120) of claim 14, configured to indicate whether the set of HRIBs (206) is determined for uplink or downlink transmissions.

17. The TRP (120) according to one of claims 15 to 16, for transmitting information to the interfering transmitting device (110) for determining potential interference impact (204) of one or more interfering beams (202) of the interfering transmitting device (110).

18. The TRP (120) according to claim 14 or 15, wherein the serving TRP is in particular a base station.

19. The TRP (120) according to claim 14 or 15, wherein the interference emitting device (110) is in particular a TRP according to any one of claims 5 to 7.

20. The TRP (120) according to claim 14 or 15, wherein the interference emitting device (110) is in particular a TRP according to claim 8.

21. An interference aware beam selection method (1200), the method comprising:

determining (1201), from a set of one or more interfering beams (201), a set of high risk interfering beams, HRIB (206), on a set of resource blocks, wherein the set of HRIB (206) is determined based on statistics (203) of usage of the one or more interfering beams (201), the set of resource blocks being a set of time-frequency resources allocated for a processing device;

signaling the set of HRIBs (206) to a serving TRP in a victim cell; and

selecting a beam pair from a set of candidate beam pairs (i, j) to establish a communication link from a serving transmitting device (120) to a receiving device (140) through the selected beam pair, wherein each of the candidate beam pairs (i, j) comprises a transmitting beam (j) of the serving transmitting device (120) and a receiving beam (i) of the receiving device (140), wherein the selection is based on the set of high-risk interference beams HRIB (206).

22. The method (1200) according to claim 21, wherein the statistics (203) are based on past and/or expected usage of the one or more interfering beams (201).

23. The method (1200) of claim 21, wherein the set of HRIBs (206) is determined further based on one or more potential interference impact values (204) of the one or more interfering beams (202).

24. The method (1200) according to any one of claims 21 to 23,

wherein the set of HRIBs (206) is determined for uplink transmission, or

Wherein the set of HRIBs (206) is determined for downlink transmissions.

25. The method (1200) of claim 21, wherein beam pair selection is based on signal measurements of one or more interfering beams (112) at the receiving device (140).

26. The method (1200) of claim 21 or 25, selecting the beam pair from the set of candidate beam pairs (i, j) comprising:

27. The method (1200) of claim 26, comprising: determining a respective fraction SCR (i, j) of each of the candidate beam pairs (i, j) further based on:

a signal strength descriptor for the respective candidate beam pair (i, j); and

28. A method (1200) according to claim 26, wherein the fraction SCR (i, j) is defined as follows:

representing the variance of the noise.

29. The method (1200) of claim 27, wherein the fraction SCR (i, j) is defined as follows:

representing the variance of the noise.

30. A readable non-transitory storage medium storing program code which, when executed by a computer, causes the method of any one of claims 21 to 29 to be performed.