CN108289311B

CN108289311B - Interference measuring method and device and timing deviation measuring method

Info

Publication number: CN108289311B
Application number: CN201710014912.8A
Authority: CN
Inventors: 徐汉青; 赵亚军; 杨玲; 李新彩
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-01-09
Filing date: 2017-01-09
Publication date: 2022-10-14
Anticipated expiration: 2037-01-09
Also published as: CN108289311A; WO2018126792A1

Abstract

The embodiment of the invention discloses an interference measurement method and device and a timing deviation measurement method, wherein the method comprises the following steps: first communication device acquisition first sending configuration information; if the second communication equipment is a first base station, the first communication equipment is a second base station or User Equipment (UE) connected in a cell formed by the second base station; if the second communication device is a first UE, the first communication device is a second UE or a neighboring base station of a base station connected with the first UE; measuring the first reference signal according to the first sending configuration information to form a first measurement result; wherein the first measurement result is used for interference coordination across links.

Description

Interference measurement method and device and a timing deviation measuring method

Technical Field

The present invention relates to the field of wireless communications, and in particular, to an interference measurement method and apparatus, and a timing deviation measurement method.

Background

A Long Term Evolution (LTE) system supports Frequency Division Duplex (FDD) operation (downlink works on one carrier and uplink works on another carrier) on paired Frequency spectrums. And meanwhile, the method also supports the Time Division Duplex (TDD) operation on an unpaired carrier. The existing TDD operation mode can only apply a limited number of configuration modes (corresponding to configuration 0 to configuration 6) for uplink and downlink subframe allocation, and the same configuration, that is, the same transmission direction, is adopted between adjacent cells. An enhanced interference and traffic adaptation (eIMTA) environment can configure uplink and downlink directions of an LTE system in a semi-static manner (more than 10 ms), and different configurations of TDD uplink and downlink subframe allocation can be adopted between adjacent cells, but these configurations are still limited to the above-mentioned limited centralized configuration.

In order to meet the demand of fast service adaptation and further improve the spectrum utilization efficiency, future wireless communication systems (such as 5G/New Radio systems) should support dynamic TDD operation, dynamic TDD operation refers to dynamically or semi-dynamically changing the transmission direction of uplink or downlink on unpaired spectrum, or on uplink or downlink carriers in paired spectrum. Compared to eIMTA, here dynamic TDD operation may support subframe-level, or slot-level, even more dynamic transmit direction changes. Moreover, the dynamic TDD does not limit the configuration mode that only uses the above limited uplink and downlink subframe allocation, but can more flexibly schedule uplink and downlink transmission. Dynamic TDD may also be referred to herein as flexible duplexing or duplexing flexibility.

But face a serious problem of cross-link interference in the application or simulation process.

Disclosure of Invention

In view of the above, embodiments of the present invention are to provide an interference measurement method and apparatus, and a timing deviation measurement method, which are expected to reduce interference and improve communication quality.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a first aspect of an embodiment of the present invention provides an interference measurement method, including:

the first communication equipment acquires first sending configuration information; the first sending configuration information is configuration information of a first reference signal sent by a second communication device; if the second communication equipment is a first base station, the first communication equipment is a second base station or User Equipment (UE) connected in a cell formed by the second base station; if the second communication device is a first UE, the first communication device is a second UE or a neighboring base station of a base station connected with the first UE;

and measuring the first reference signal according to the first sending configuration information to form a first measuring result.

A second aspect of an embodiment of the present invention provides an interference measurement method, including:

the second communication equipment acquires first sending configuration information of the first reference signal; if the second communication equipment is a first base station, the first communication equipment is a second base station or User Equipment (UE) connected in a cell formed by the second base station; if the second communication device is the first UE, the first communication device is a second UE or a neighboring base station of a base station to which the first UE is connected;

transmitting the first reference signal according to the first transmission configuration information; the first reference signal is used for the first communication device to measure and form a first measurement result.

A third aspect of embodiments of the present invention provides an interference measurement apparatus, the method is applied to first communication equipment and comprises the following steps:

a first obtaining unit, configured to first send configuration information; the first sending configuration information is configuration information of a first reference signal sent by a second communication device; if the second communication device is the first base station, the first communication device is a second base station or a User Equipment (UE) connected in a cell formed by the second base station; if the second communication device is a first UE, the first communication device is a second UE or a neighboring base station of a base station connected with the first UE;

a first measurement unit, configured to measure the first reference signal according to the first sending configuration information, so as to form a first measurement result.

A fourth aspect of embodiments of the present invention provides an interference measurement apparatus, the method is applied to the second communication equipment and comprises the following steps:

a second obtaining unit, configured to obtain first sending configuration information of the first reference signal; if the second communication equipment is a first base station, the first communication equipment is a second base station or User Equipment (UE) connected in a cell formed by the second base station; if the second communication device is a first UE, the first communication device is a second UE or a neighboring base station of a base station connected with the first UE;

a second sending unit, further configured to send the first reference signal according to the first sending configuration information; the first reference signal is used for the first communication device to measure and form a first measurement result.

A fifth aspect of the embodiments of the present invention provides a timing offset measurement method, in which a base station configures configuration information for performing cross-link timing offset measurement by a user equipment UE;

sending the configuration information to the UE; wherein the configuration information is used for triggering the UE to perform cross-link timing deviation measurement;

and receiving the measurement result of the timing deviation measurement reported by the UE.

A sixth aspect of the embodiments of the present invention provides a timing offset measurement method, including:

a user terminal UE receives configuration information sent by a base station;

according to the configuration information, performing cross-link timing deviation measurement to obtain a measurement result;

and reporting the measurement result to a base station.

And the UE reports the timing deviation measurement result of the cross-link cross link to the base station.

A seventh aspect of the embodiments of the present invention provides a timing offset measurement method, including:

the base station configures configuration information for making timing offset measurements across the links,

and the base station carries out cross-link timing deviation measurement based on the configuration information.

The embodiment of the invention provides an interference measurement method and device and a timing deviation measurement method, which can exchange the sending configuration information of a reference signal between two communication devices across a link, the communication equipment for measurement can carry out measurement according to the received sending configuration information, thereby obtaining the cross-link interference measurement and facilitating the subsequent cross-link interference coordination; therefore, cross-link interference is reduced, and communication quality is improved.

Drawings

Fig. 1 is a schematic flowchart of a first interference measurement method according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a second interference measurement method according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a third interference measurement method according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a first interference measurement apparatus according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first interference measurement apparatus according to an embodiment of the present invention;

fig. 6 is an interference diagram of a first cross-link interference according to an embodiment of the present invention;

fig. 7 is an interference diagram of a second cross-link interference according to an embodiment of the present invention;

fig. 8 is an interference diagram of a third cross-link interference according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention is further described in detail with reference to the drawings and the specific embodiments of the specification.

As shown in fig. 1, the present embodiment provides an interference measurement method, including:

step S110: the first communication equipment acquires first sending configuration information; the first sending configuration information is configuration information of a first reference signal sent by a second communication device; if the second communication equipment is a first base station, the first communication equipment is a second base station or User Equipment (UE) connected in a cell formed by the second base station; if the second communication device is a first UE, the first communication device is a second UE or a neighboring base station of a base station connected with the first UE;

step S120: and measuring the first reference signal according to the first sending configuration information to form a first measuring result. In this embodiment, the first measurement result, may be used for interference coordination across links.

The interference measurement method described in this embodiment may be an interference measurement method applied to various first communication devices such as a base station or a UE.

The first communication device and the second communication device are herein both communication devices of a wireless communication network. In this embodiment, the Base station may be an evolved Node Base station (eNB), a next Generation Base station (gNB), a home Base station, a small cell Base station, or various Access Points (APs) that can be accessed by other devices.

The UE may be a mobile phone, a tablet computer, or a wearable device.

In this embodiment, the second communication device acquires the first transmission configuration information before transmitting the first reference signal, so that the first communication device can acquire the first transmission configuration information in step S110. According to the first transmission configuration information, the first communication device may know on which time-frequency resources the first reference signal is transmitted, and on which time-frequency resources the first reference signal is likely to be received. When the first communication device and the second communication device are both base stations, the first communication device may receive the first configuration information from the base station that transmitted the first reference signal. When the first communication device is a base station and the second communication device is a UE, the first transmission configuration information of the first reference signal of the UE is configured by the base station for the UE, and at this time, the base station configured with the first configuration information may be a base station of a cell where the UE is located, or may be a base station of the first communication device. The obtaining includes reading the first transmission configuration information or configuring the first transmission configuration information if the first transmission configuration information is configured by the first communication device, and may include receiving the first configuration information from another base station if the first transmission configuration information is configured by another base station.

In this embodiment, the first Reference Signal may be a downlink Demodulation Reference Signal (DL DMRS), a Channel State related Signal (CSI-RS), and a downlink Reference Signal (DL RS).

In this embodiment, the first communication device and the second communication device may both be base stations, and the mutual interference condition between the base stations may be known through the execution of the steps S110 to S120. For example, downlink transmission of base station a interferes with uplink transmission of base station B.

The first communication device and the second communication device may both be UEs, so that the mutual interference condition between UEs, for example, the interference of uplink transmission of UE1 to downlink reception of UE2, can be known through the execution of steps S110 to S120.

The first communication device may also be a base station 1 and the second communication device is a UE connected to a base station 2, in short, the UE is a UE not currently connected to a base station 1.

In this embodiment, the first communication device may be an interfering device, and the second communication device may be an interfered device; the interference device is a device for generating interference signals and is a generation device of an interference source. The interfered equipment is the equipment which receives the interference of other equipment. Of course, the first communication device may also be a victim device, and the second communication device is an interferer device.

In this embodiment, if The first communication device and The second communication device are both base stations, the first communication device interacts with The first sending configuration information through an X2 interface, a backhaul link, or a private interface or an Over The Air (OTA) signaling between other base stations. If the first communication Device and the second communication Device are both UEs, the first sending configuration information may be interacted between the UEs through a Device-to-Device (D2D) interface and the like.

In this embodiment, the first communication device may perform measurement on the first reference signal according to the first transmission configuration information, so as to obtain a cross-link interference condition of the second communication device with respect to the first communication device.

In this embodiment, the first reference signal may be a reference signal transmitted at a timing, for example, a signal transmitted periodically. The second reference signal may also be a trigger to send signal. The trigger transmission signal is a signal transmitted when a preset trigger condition is satisfied. For example, if the signal transmission parameter of the second communication device is changed, for example, if the transmission power is increased, the neighboring base station or the UE in the neighboring base station may receive interference. For another example, the signal generating direction of the second communication device is changed. These are all trigger events that satisfy the preset trigger condition. In this embodiment, the triggering event may further include: and the first communication equipment or the second communication equipment detects that the signal receiving and sending quality is reduced and the interference is enhanced, and in order to determine the interference source or the interference strength, the preset triggering condition is considered to be currently met, so that the transmission of the first reference signal is triggered. In this embodiment, the first communication device may send a trigger signal to the second communication device to trigger the second communication device to form the first sending configuration information when detecting a trigger event that meets the preset trigger condition.

In this embodiment, the first reference signal may carry sender identification information, where the sender identification information may include a device identifier of the second communication device or a cell identifier of a cell formed by the second communication device. The second reference signal may also carry the carrier identification information, where the carrier identification information may be used to indicate a carrier that transmits the first reference signal. When the first reference signal is not transmitted using an omni-directional antenna or an omni-directional port, but rather a beam using a directional antenna or a directional port, the carrier identity may include the beam identity.

In this embodiment, the step S120 measures the first reference signal, which may be various first reference signals capable of representing the second communication device and being sent by the second communication device, such as Radio Resource Management (RRM) measurement, channel State Information (CSI) measurement, channel Quality Indicator (CQI) measurement, interference measurement, or path loss measurement, and measures an influence degree of the first reference signal on the first communication device.

Meanwhile, the interference measurement method provided in the embodiment can detect cross-link interference measurement, and the measurement result can be used for cross-link interference coordination, and interference can be reduced after coordination, so that the communication quality can be improved, and the communication interference caused by cross-link can be solved.

In some embodiments, as shown in fig. 2, the method further comprises:

step S111: acquiring first measurement configuration information before measuring the first reference signal;

step S112: sending the first measurement configuration information to a third communication device, or executing resource scheduling according to the first measurement configuration information; wherein the first measurement configuration information at least comprises: first muting configuration information; the first muting configuration information is used for indicating a predetermined time-frequency resource for prohibiting a third communication device from transmitting signals, and the third communication device includes at least one of: the second communication device, a device adjacent to the first communication device, and a communication device to which the first communication device is connected.

In this embodiment, the first measurement configuration information is obtained, where the first measurement configuration information may be pre-stored in the first communication device, the first measurement configuration information is generated by the first communication device for determining whether to measure the first reference signal or how to measure the first reference signal for the first communication device. In this embodiment, the first measurement configuration information may be completely independent of the first discovery configuration information, or may be determined according to the first transmission configuration information. Optionally, the first measurement configuration information has a correlation with the first transmission configuration information, and the predetermined time-frequency resource indicated by the first measurement configuration information is one or more of the transmission time-frequency resources of the first reference signal.

In this embodiment, the first communications device may further perform resource scheduling according to the first measurement information. For example, in the predetermined time-frequency resource, the time-frequency resource for the UE or other communication device to send a signal to itself is not allocated, for example, the predetermined time-frequency resource is set as a scheduling prohibition or an invalid resource, so as to achieve the effect of prohibiting scheduling.

In some embodiments, the first measurement configuration information further comprises at least one of:

measurement object information indicating a channel, a cell and/or the second communication device to be measured;

measurement subframe information for indicating a measurement subframe;

measurement time slot information for indicating a measurement time slot;

measurement period information for indicating a measurement period;

measurement offset information for indicating a measurement time offset and/or a frequency offset;

measuring duration information for indicating duration of one measurement;

measurement pattern information indicating time and/or frequency resources where the measurement is made.

The channel may indicate the sending device to the receiving device. The cell is a sending cell of the first reference signal. The measurement object information may further indicate a transmission apparatus of the first reference signal

In this way, according to the first measurement information, the first communication device knows when to listen to the first reference signal on what frequency spectrum, and transmits the first measurement information to other communication devices, and these communication devices may perform a muting operation according to the first measurement configuration information, where the muting operation is a device that does not transmit a signal to the first communication device.

The first muting configuration information comprises at least one of:

the silent subframe information is used for indicating the silent subframe for prohibiting the signal transmission;

silence slot information for indicating a silence slot in which transmission of a signal is prohibited;

silence time frequency pattern information used for indicating the time frequency resource of prohibiting sending signals;

silence port information, which is used to indicate the port that is forbidden to send signals;

and transmitting power information for indicating that the transmitting power of the transmitting signal is zero.

The first communication device may listen to, i.e. make measurements on, the first reference signal in certain subframes or certain time slots.

In some embodiments, the first transmission configuration information comprises at least one of:

transmitting subframe information for indicating a transmission subframe of the first reference signal;

transmitting time slot information for indicating a transmitting time slot of the first reference signal;

transmitting period information for indicating a transmitting period of the first reference signal;

transmitting offset information for indicating an offset of the first reference signal in a time domain and/or a frequency domain;

transmitting port information for indicating a port of the first reference signal;

transmitting pattern information for indicating a time-frequency resource of transmission of the first reference signal;

the second muting configuration information is used for indicating a predetermined time-frequency resource for the third communication device to send signals, and/or generating a basis for the first muting configuration information for the first communication device.

In this embodiment, the mute subframe is one or more of the transmission subframes. The silence slots can be one or more of the transmit slots. The specific muting subframe is a subframe in which the first communication device measures the first reference signal, and the muting slot is a slot in which the first communication device measures the first reference signal.

In some embodiments, the method further comprises:

performing cross-link interference coordination according to the first measurement result;

or the like, or, alternatively,

and returning the first measurement result to the second communication device, where the first measurement result is used for the second communication device to perform the cross-link interference coordination.

In this embodiment, the cross-link interference coordination method includes multiple methods:

the first method comprises the following steps:

reducing the transmission power of an interference signal under the condition of ensuring that a target receiving end can receive;

and the second method comprises the following steps:

the receiving operation of the first communication device and the transmitting operation of the second communication device are staggered in the time domain, or the transmitting operation of the first communication device and the receiving operation of the second communication device are staggered in the time domain.

And the third is that:

at least one of the first communication device and/or the second communication device reduces the frequency of use of the time-frequency resources causing interference, thereby reducing mutual interference as a whole.

And fourthly: and adjusting the transmission parameters so as to achieve interference coordination. The transmission parameters may include various parameters such as the transmission angle of the transmitting antenna and the suspension, etc., so as to reduce mutual interference.

And a fifth mode:

and readjusting the scheduling of the corresponding time frequency resources. For example, the cell is divided into a central area and a peripheral area around the central area, and time-frequency resources with interference between two base stations are changed from being used by user equipment scheduled to the peripheral area to being used by user equipment scheduled to the central area.

In short, there are various ways to perform cross-link interference coordination, and the method is not limited to any of the above. But before interference coordination is performed, the measurement condition needs to be determined from the first measurement result.

In some embodiments, the first measurement result is an interference measurement of a first channel from the second communication device to the first communication device; the second communication device from the first communication device is a second channel;

in this embodiment, the method further includes:

and obtaining a second measurement result of the second channel based on the reciprocity of the channels and the first measurement result.

The transmission characteristics of the transmission channels of the first communication device and the second communication device may be consistent, and then a second measurement result of the second channel may be obtained based on channel reciprocity without performing measurement of the second channel.

At least one of the first communication device and the second communication device, or a management device connected with the first communication device and the second communication device, is facilitated to perform cross-link interference coordination according to the first measurement result and/or the second measurement result.

In some cases, there is no reciprocity between channels, and then the second communication device needs to receive the second reference signal sent by the first communication device to obtain the second measurement result. Specifically, on the basis of steps S110 to S120, the method further includes: the first communication equipment sends second sending configuration information to the second communication equipment; transmitting a second reference signal based on the second transmission configuration information, wherein the second reference signal is used for forming a second measurement result from the first communication device to the second communication device.

Therefore, the first measurement result and the second measurement result can be obtained, and cross-link interference of the first channel and the second channel is avoided simultaneously according to the first measurement result and the second measurement result.

In some embodiments, the step S120 may include:

when the statistical cross-link interference measurement is carried out, measuring the first reference signal, and obtaining a radio signal management (RRM) measurement result and/or a channel measurement result and/or interference condition information;

and when the instantaneous cross-link interference measurement is carried out, measuring the first reference signal, and obtaining an interference source and/or an interference direction and/or a channel state information result and/or interference condition information.

In this embodiment, the statistical cross-link interference measurement is to perform multiple cross-link interference measurements within a predetermined time period or a corresponding frequency band, and then perform statistics on the multiple cross-link interference measurements to obtain a statistical measurement result, for example, calculate an average value of the multiple cross-link interference measurements as a final measurement result of the cross-link interference measurement.

The instantaneous cross-link interference measurement is: and carrying out one measurement within a short time length or a short frequency band, wherein the result of the measurement is directly used as the final measurement result of the cross-link interference measurement.

In this embodiment, the time-frequency resource used by the first reference signal is a semi-persistent scheduling resource, and when performing measurement, it is necessary to obtain a measurement result of RRM and/or a channel measurement result and/or interference condition information. If the time-frequency resource used by the first reference signal is a dynamic scheduling resource, an interference source and/or an interference direction need to be determined when measurement is performed.

When the second communication device transmits the first reference signal, it may possibly use an omnidirectional antenna for transmission, or may also use a beam of a directional antenna for carrying.

In this embodiment, the step S120 may include:

if the first reference signal is sent by using a beam, identifying the beam to obtain beam identification information; wherein the beam identification information is a component of the first measurement result.

In this way, the beam identification information is used as a component of the first measurement result, so that it can be known whether the corresponding beam causes cross-link interference according to the first measurement result.

In this embodiment, the beam identification information may be transmitted by being carried on the beam, and the identifying the beam identification information in this embodiment may include:

demodulating information carried on the beam, thereby obtaining the beam identification information; in specific implementation, the beam configuration information may also be queried according to the pre-obtained beam configuration information and according to the transmission parameters such as the beam transmission time and/or the transmission angle, so as to obtain the beam identification information.

In some embodiments, the first measurement result is used for comparing with a comparison threshold to form a comparison result; and the comparison result is used for determining whether the cross-link interference exists and/or the cross-link interference degree exists.

In this embodiment, a comparison threshold is also set. In this embodiment, the comparison threshold may be one or more. For example, the comparison threshold is one, the signal strength measured by the first measurement result is compared with the comparison threshold, if the signal strength is greater than the comparison threshold, it may be considered that cross-link interference exists, and if the signal strength is less than the comparison threshold, it may be considered that cross-link interference does not exist.

In this embodiment, the comparison threshold includes a first threshold and a second threshold. The first threshold is not equal to the second threshold. The first threshold may be a decision threshold for determining whether cross-link interference exists, and the second threshold may be a degree threshold for determining a severity of the cross-link interference. When the determination is made, the first measurement result and/or the second measurement result may be compared with the first threshold and the second threshold at the same time to quickly obtain whether cross-link interference exists and the severity, or the first measurement result and the second measurement result may be compared with the first threshold first, the presence of cross-link interference is determined according to the comparison result with the first threshold, and then the cross-link interference degree is obtained with the second threshold.

In still other embodiments, if the first communication device is an interfering device, the second communication device is an interfered device; and if the first communication equipment is interfered equipment, the first communication equipment is interference equipment.

In short, in this embodiment, the device that transmits the first reference signal may be an interfering device or a victim device, and the second communication device is a victim device or an interfering device that measures the first reference signal.

As shown in fig. 3, the present embodiment provides an interference measurement method, including:

step S210: the second communication equipment acquires first sending configuration information of the first reference signal; if the second communication equipment is a first base station, the first communication equipment is a second base station or User Equipment (UE) connected in a cell formed by the second base station; if the second communication device is a first UE, the first communication device is a second UE or a neighboring base station of a base station connected with the first UE;

step S220: transmitting the first reference signal according to the first transmission configuration information; the first reference signal is used for the first communication device to measure and form a first measurement result.

The method described in this embodiment is an interference measurement method applied to the transmitting end of the first reference signal. In this embodiment, the second communication device may obtain the first sending configuration information before sending the first reference signal, and in some embodiments, the second communication device is a base station, and the second communication device further sends the first sending configuration information to inform the first communication device of preparing to receive the first reference signal and measure the first reference signal, so as to perform cross-link interference measurement to form the first measurement result, thereby facilitating subsequent interference coordination according to the first measurement result, reducing cross-link interference, and improving communication quality. In other embodiments, the second communication device is a UE, and the first communication device is a base station, then the first communication device may configure the base station for the first transmission configuration information without the UE informing the base station of the first transmission configuration information, or the first communication device may receive the first transmission configuration information from the base station that configures the first transmission configuration information for the UE, or the UE may send the first transmission configuration information to the first communication device.

The first measurement result can be used for interference coordination across links.

In still other embodiments, the method further comprises:

receiving first measurement configuration information sent by the second communication equipment; the first measurement configuration information includes at least: first muting configuration information;

and shielding the operation of sending signals by the adjacent equipment of the first communication equipment in a preset time frequency resource according to the first silence configuration information.

The first communication device may form the first measurement configuration information according to the first transmission configuration information, although the first measurement configuration information may be formed completely independent of the first transmission configuration information. In this embodiment, the second communication device receives the first sending configuration information, and executes the silent operation from left according to the content in the first measuring configuration information, where the silent operation is an operation of shielding the sending signal in the predetermined time-frequency resource. In this embodiment, the predetermined time frequency resource is a time frequency resource for the first communication device to measure the first reference signal.

For the description of the first measurement configuration information in this embodiment, reference may be made to the foregoing embodiments, and the description is not repeated here.

the second muting configuration information is used for indicating a predetermined time-frequency resource for the third communication device to send a signal, and/or generating a basis for the first muting configuration information for the first communication device.

In this embodiment, the second muting configuration information can be used as a basis for forming the first muting configuration information, and the step of forming the first measurement configuration information by the first communication device is simplified.

In some embodiments, the method further comprises:

receiving the first measurement result;

and performing cross-link interference coordination according to the first measurement result.

In this embodiment, the second communication device further receives the first measurement result, and performs interference coordination across the link according to the first measurement result.

In still other embodiments, the first measurement is an interference measurement of a first channel from the second communication device to the first communication device;

the method further comprises the following steps:

obtaining a second measurement result of a second channel from the first communication device to the second communication device based on reciprocity of the channels and the first measurement result;

or the like, or a combination thereof,

receiving second sending configuration information sent by the first communication equipment;

and measuring the second reference signal according to the second sending configuration information.

With reference to the foregoing embodiments, the second communication device may be specifically configured to perform interference coordination across links by combining the first measurement result and the second measurement result.

In this embodiment, the information content and/or the information format of the second transmission configuration information is similar to that of the first transmission configuration information. For example, various information such as transmission subframe information, transmission slot information, transmission pattern, etc. may be included. The information content and format of the first sending configuration information and the second sending configuration information are unified, so that information interaction and demodulation among the communication devices are facilitated.

As shown in fig. 4, the present embodiment provides an interference measuring apparatus, applied to a first communication device, including:

a first obtaining unit 110, configured to receive first sending configuration information of a first reference signal sent by a second communication device; if the second communication equipment is a first base station, the first communication equipment is a second base station or User Equipment (UE) connected in a cell formed by the second base station; if the second communication device is a first UE, the first communication device is a second UE or a neighboring base station of a base station connected with the first UE;

a first measurement unit 120, configured to measure the first reference signal according to the first sending configuration information to form a first measurement result;

wherein the first measurement result is used for interference coordination across links.

The interference measurement apparatus provided in this embodiment is a measurement apparatus applied to a first communication device. The first obtaining unit 110 may correspond to a receiving antenna, where the receiving antenna may be an omnidirectional antenna or a directional antenna.

The first measurement unit 120 may include a processor or processing circuitry such as a decoder, which may include a central processor, microprocessor, digital signal processor, or programmable array, etc. The processing circuitry may comprise an application specific integrated circuit or the like.

The processor or processing circuit may be configured to perform the above-mentioned measurement function by executing a predetermined instruction, so as to obtain the first measurement result.

In this embodiment, the first measurement result may be used for performing cross-link interference coordination.

In some embodiments, the apparatus further comprises:

an obtaining unit, configured to obtain first measurement configuration information before the first reference signal is measured;

a first sending unit, configured to send the first measurement configuration information to a third communication device,

or

A scheduling unit, configured to perform resource scheduling according to the first measurement configuration information; wherein the first measurement configuration information at least comprises: first muting configuration information; the first muting configuration information is used to indicate a predetermined time-frequency resource for prohibiting a third communication device from sending a signal, and the third communication device includes: at least one of the first communication device, a neighboring device of the second communication device, and a communication device connected with the first communication device.

The obtaining unit and the scheduling unit may correspond to a processor or a processing circuit, and may generate the first measurement configuration information by itself. The first transmission unit may correspond to a transmission antenna of the first communication device,

the first measurement configuration information is also obtained in this embodiment,

in this embodiment, the relevant description of the first measurement information, the first muting information and the first transmission configuration information can be referred to the foregoing sections, and will not be repeated here.

In still other embodiments, the apparatus further comprises:

a first coordination unit, configured to perform cross-link interference coordination according to the first measurement result;

or the like, or a combination thereof,

a first sending unit, configured to return the first measurement result to the second communication device, where the first measurement result is used for the second communication device to perform the cross-link interference coordination.

Here, the first coordination unit may also correspond to a processor or a processing circuit, and perform the interference coordination through the information processing.

The first transmission unit also corresponds to various types of transmission results such as the transmission antenna of the first communication device in the present embodiment. When the first communication device and the second communication device are both base stations, the communication interfaces corresponding to the first sending unit and the first obtaining unit 110 may also be wired interfaces, and the first sending configuration information and/or the first measurement result and/or the second measurement result are interacted through a wired network. The first obtaining unit 110 may also correspond to a processor, and query the first sending configuration information configured by itself.

In still further embodiments, the first measurement result is an interference measurement of a first channel from the second communication device to the first communication device; the first measurement unit 120 is further configured to obtain a second measurement result of a second channel from the first communication device to the second communication device based on the reciprocity of the channels and the first measurement result.

In another embodiment, the apparatus further comprises:

a first sending unit, configured to send second sending configuration information to the second communication device; transmitting a second reference signal based on the second transmission configuration information, wherein the second reference signal is used for forming a second measurement result from the first communication device to the second communication device.

The first sending unit may be configured to send the second sending configuration information and the second reference signal to the second communication device, and perform acquisition of a second measurement result of the second channel.

In other embodiments, the first measurement unit 120 is specifically configured to measure the first reference signal when performing statistical cross-link interference measurement, and obtain a radio signal management RRM measurement result and/or a channel measurement result and/or interference condition information; and when the instantaneous cross-link interference measurement is carried out, measuring the first reference signal, and obtaining an interference source and/or an interference direction and/or a channel state information result and/or interference condition information.

Further, the first measurement unit 120 is specifically configured to identify a beam to obtain beam identification information if the first reference signal is transmitted by using the beam; wherein the beam identification information is a component of the first measurement result.

The first measurement result is used for being compared with a comparison threshold to form a comparison result; and the comparison result is used for determining whether the cross-link interference exists and/or the cross-link interference degree exists.

In addition, if the first communication device is an interfering device, the second communication device is an interfered device; and if the first communication equipment is interfered equipment, the first communication equipment is interference equipment.

As shown in fig. 5, the present embodiment provides an interference measurement apparatus, which is applied in a second communication device, and includes:

a second obtaining unit 210, configured to form first sending configuration information of the first reference signal; if the second communication equipment is a first base station, the first communication equipment is a second base station or User Equipment (UE) connected in a cell formed by the second base station; if the second communication device is a first UE, the first communication device is a second UE or a neighboring base station of a base station connected with the first UE;

a second sending unit 220, configured to send the first reference signal according to the first sending configuration information; the first reference signal is used for the first communication device to measure and form a first measurement result; the first measurement result is used for interference coordination across links.

The second obtaining unit 210 in the present embodiment may correspond to a processor or a processing circuit in the second communication device, and the relevant description of the processor or the processing circuit may refer to the corresponding parts of the foregoing embodiments.

The second transmitting unit 220 may correspond to various communication interfaces, such as a transmitting antenna, etc.

In some embodiments, the apparatus comprises:

a second receiving unit, configured to receive first measurement configuration information sent by the second communication device; the first measurement configuration information includes at least: first muting configuration information;

and the execution unit is used for shielding the operation of sending signals to the first communication equipment at a preset time-frequency resource according to the first silence configuration information.

The second receiving unit here also corresponds to a communication interface, which can be used to receive the first measurement configuration information.

The execution unit may correspond to a processor or a processing circuit. The muting operation, i.e., the masking operation, can be performed according to the first muting configuration information.

The first sending configuration information can be referred to the foregoing embodiments, and is not repeated here.

In some embodiments, the apparatus further comprises:

a second receiving unit, configured to receive the first measurement result;

and the second coordination unit is used for performing cross-link interference coordination according to the first measurement result.

The second receiving unit, which may also correspond to a receiving interface, e.g. a receiving antenna, may be capable of receiving the first measurement result. The second coordination unit may correspond to a processor or a processing circuit to perform interference coordination across links.

In some embodiments, the first measurement result is an interference measurement of a first channel from the second communication device to the first communication device;

the device further comprises:

a second measurement unit, configured to obtain a second measurement result of a second channel from the first communication device to the second communication device based on reciprocity of the channels and the first measurement result; or, receiving second sending configuration information sent by the first communication device;

a second sending unit, configured to measure the second reference signal according to the second sending configuration information.

The second measurement unit, which may also correspond to the processor or the processing circuit, may obtain the first measurement result according to reciprocity of a channel, or measure a second reference signal according to the received second transmission configuration information, to obtain the second measurement result.

The embodiment of the invention also provides a timing deviation measurement method, wherein the base station configures configuration information for cross-link timing deviation measurement of the user equipment UE;

sending the configuration information to the UE; the configuration information is used for triggering the UE to perform cross-link timing deviation measurement and reporting a measurement result to the base station.

In this embodiment, the configuration information of the base station performing the cross-link timing offset measurement is used to indicate the UE to perform synchronization between different communication nodes, for example, the cross-links between the base station and the UE, and between the UE and the UE.

And sending the configuration information to the UE, then measuring by the UE according to the configuration information, and receiving a measurement result reported by the UE after measurement.

In this case, the base station may also receive the measurement result reported by the UE. From this measurement, it can be used for synchronization correction across links.

An embodiment of the present invention further provides another timing offset measurement, including:

a user terminal UE receives configuration information sent by a base station;

and reporting the measurement result to a base station.

In this embodiment, the UE receives configuration information sent by the base station, and performs inter-link timing offset measurement according to the configuration information, where the timing offset measurement is to perform measurement of an out-of-synchronization phenomenon. Here, the cross link can be referred to the corresponding part of the previous embodiment, and will not be described again.

The embodiment of the present invention further provides a timing deviation measurement method, including:

the base station configures measurement information for making timing offset measurements across the link,

In this embodiment, the base station is configured to obtain measurement information and perform measurement according to the configuration information. The measurements can also be used to synchronize across the links.

Several specific examples are provided below in connection with any of the embodiments described above:

in this example, the network side only takes the base station (gNB) as an example, and the method applied to the base station in this example can also be applied to deployment devices on the network side such as a cell (cell), a small cell (small cell), a Transmission and Reception Point (TRP), and an Access Point (AP).

The first example is:

the method relates to measurement/coordination between two or more base stations, and mainly solves the problem of cross-link interference measurement between the base stations.

The measurement is performed by a base station which is prepared/performing uplink reception, and an uplink reception base station may be subjected to cross-link interference of a neighboring downlink transmission base station, and the cross-link interference needs to be reduced, and the communication quality needs to be improved.

As shown in fig. 6, downlink transmission from the second base station gNB2 causes cross-link interference between base stations for uplink reception from the first base station gNB1. To perform cross-link interference coordination and cancellation between base stations, the gNB1 needs to measure the channel/interference conditions of the gnbs 2 to gNB1.

When the gNB1 performs measurement, in addition to receiving the reference signal sent by the gNB2, the interference from base stations or UEs in other cells adjacent to the gNB1, such as the gNB3 or the UE3-1 in fig. 6, may be caused, thereby causing inaccurate measurement.

Cross-link interference detection between base stations may be performed by one or more of the following steps.

Step one, the adjacent gNB sends at least one of the following information through a backhaul (such as an X2 interface or a private interface) or an air interface (such as OTA signaling): the reference signal sends configuration information and gNB measurement configuration information. The adjacent gNB includes at least a transmitting base station and a measuring base station, and further includes an adjacent base station of the measuring base station.

A transmitting base station: in the measurement process, the transmitting base station transmits a reference signal for measurement. For example, when an interfering base station transmits DL, cross-link interference may be caused to the interfered base station UL reception. In the measurement process, the interfering base station transmits a reference signal for measurement. Therefore, the transmitting base station is an interfering base station, such as the gNB2 in fig. 6.

Measuring a base station: in the measurement process, the measurement base station receives the reference signal sent by the sending base station and performs measurement. For example, UL reception by the victim base station may suffer from cross-link interference from DL transmission by the interfering base station. In the measurement process, the interfered base station receives the reference signal sent by the interference base station and performs measurement. Therefore, the measuring base station is a disturbed base station, such as the gNB1 in fig. 6.

The reference signals may be used at least for inter-gNB cross-link interference measurements. The cross-link interference measurement in this example may include: RRM measurements, CSI/CQI measurements, or interference measurements, or path loss measurements.

The reference signal used for base station measurement may be a DL DMRS, CSI-RS, or dedicated measurement signal; the new measurement signal is the newly designed signal for RRM measurement or channel/interference measurement, for example, the uplink and downlink RS symmetric DL RS. Optionally, the reference signal used for the base station measurement is CSI-RS. The dedicated measurement signal may in this example be a specially designed measurement signal.

Optionally, the reference signal carries cell/base station identity (identity, ID) information. The method comprises at least one of the following steps: cell physical ID, or transmission point ID (such as TRP ID or AP ID), or the number of the cell/base station/transmitting device. The carrying mode can be implicit or explicit. Implicit ways may be generated by ID scrambling or participating in the sequence of reference signals as described above.

The reference signal transmission configuration information includes at least one of: transmitting subframe/slot configuration information, transmission period/transmission offset information, port information, transmission pattern configuration information, silence-RS (muted-RS) resource configuration information.

Transmit subframe/slot configuration information, which indicates at which subframes/slots the gNB transmits the reference signal, is typically determined by a corresponding transmit period and/or transmit offset, or triggered to transmit aperiodically.

Pattern configuration information is transmitted for indicating a time-frequency pattern of RS (CSI-RS) transmitted by the gNB, such as which symbols and which REs of a subframe/slot are over which reference signals are transmitted.

muted-RS resource configuration information indicating a subframe/slot, or a time-frequency resource pattern, or a port, in which the muted-RS is transmitted, and on which the RS is transmitted with zero power.

The gNB measurement configuration information includes at least one of: measurement object information, measurement subframe/time slot configuration information, measurement period/measurement offset/measurement duration information, measurement pattern configuration information, muted-RS resource configuration information.

Measurement object information indicating with which of the gNBs the channel/interference condition between gNB measurements, the measurement object may be indicated with a cell ID or renumbering the gNB.

Measurement subframe/slot configuration information for indicating which subframes/slots the gNB receives or measures the reference signal, typically determined by a corresponding measurement period and/or measurement offset and/or measurement duration, or to trigger the measurement aperiodically.

Measurement pattern configuration information for indicating a time-frequency pattern of a gNB measurement RS (CSI-RS), such as which symbols and which REs of a subframe/slot are over which reference signals are measured.

muted-RS resource configuration information indicating a subframe/slot, or a time-frequency resource pattern, or a port, in which the muted-RS is transmitted, and on which the RS is transmitted with zero power. The base station measures the channel/interference conditions of the neighborhood over these resources.

For example, adjacent gnbs 1, gNB2, and gNB3 in fig. 6 interact with the following reference signal CSI-RS sending configuration information and/or gNB measurement configuration information through a backhaul (e.g., an X2 interface or a private interface) or an air interface (e.g., OTA signaling).

As shown in fig. 7, gNB1 and gNB2 are neighbors of each other, and gNB1 and a third base station gNB3 are neighbors of each other. That is, adjacent regions of gNB1 are gNB2 and gNB3; the neighbor cell of gNB2 is gNB1; the neighbor of gNB3 is gNB1. These configuration information may only be interacted between adjacent cells.

The sending configuration information and the measurement configuration information may be interacted at different time points, or the sending configuration information may be interacted only between the base stations without the interaction of the measurement configuration information. The two kinds of information can be interacted at different time, and can also be interacted in a single direction. For example, at time T0, gNB2 sends signaling configuration information to gNB1; and at time T1, gNB1 sends its measurement configuration information to gNB2 and gNB 3.

The measurement configuration information of the measurement base station may be generated according to a signal transmission configuration of the transmission base station. For example, the measurement subframe/slot of the measurement base station may be: a subset or a full set of transmission subframes/slots for transmitting reference signals in the transmission configuration information. For example, the period of the transmission of the base station signal is 20ms (assuming that the offset is 0), that is, the base station signal is transmitted in subframes such as subframes 0/20/40/60/80. The measurement period of the measurement base station is 40ms, namely the measurement is carried out in sub-frames of 0/40/80 and the like.

The transmission base station may transmit the reference signal periodically or non-periodically. The aperiodic transmission may include: trigger transmission based on a trigger event. Measuring the base station to measure cross-link interference may also be an aperiodic or triggered measurement. In some cases, the reference signals of the transmitting base stations are periodically transmitted, and the measurements of the measuring base stations are aperiodic measurements.

And step two, sending the reference signal sent by the gNB according to the sending configuration information. And the measurement gNB receives the reference signal according to the measurement configuration information and performs measurement.

Optionally, measuring the uplink signal/channel of the gbb in the measurement resource without scheduling or receiving the uplink signal/channel from the cell; or, informing the scheduling-free UE not to transmit UL signal/channel in the measurement resource; or the uplink or downlink in the measurement resource performs a muting (muting) operation. The measurement resource here may be and in the foregoing embodiments is a predetermined time-frequency resource.

Optionally, other gnbs adjacent to the measuring gNB perform a muting operation in their measurement resources according to the measurement configuration of the measuring gNB, do not transmit channels/signals, or operate in a manner that muted-RS/transmit power is zero. Other gnbs herein do not include transmitting a gNB.

Optionally, other gnbs adjacent to the measured gNB notify their subordinate UEs, and the subordinate UEs perform muting operation in the measurement resources of the measured gNB without sending UL signals or channels.

For example, for fig. 6, downlink transmission of gNB2 may cause cross-link interference to uplink reception of gNB1. For cross-link interference coordination and cancellation, gNB1 needs to measure the channel conditions and/or interference conditions of gnbs 2 through gNB1. At time T0, gNB2 sends signaling configuration information to gNB1. At time T0-1, gNB2 begins transmitting reference signals according to the transmission configuration. At time T1, gNB1 sends its measurement configuration information to gNB2 and gNB 3. At time T1-1, the gNB1 receives the signal and performs measurements according to the measurement configuration. T0-1 and T1-1 may be at the same time, or T1-1 may be later than T0-1.gNB3 also does not transmit channels/signals or perform muted-RS operations in the measurement resources of gNB1 according to the measurement configuration of gNB1. Further, the gNB3 notifies its subordinate UE, which performs a muting operation in the measurement resources of the gNB1 and does not transmit UL signals or channels.

When the gNB1 measures the downlink channel/interference condition between the gNB2 and the gNB1, the gNB3 and/or the subordinate UE thereof, which can cause interference to the gNB1, are/is muted at the moment, so that the uncertain interference factors during the gNB1 test are reduced, the measurement accuracy is improved, and further interference coordination and elimination are facilitated.

The measurement of the channel/interference condition between the gnbs 2 to gNB1 by the gNB may obtain RRM measurement results such as Reference Signal Received Power (RSRP)/Received Signal Strength Indicator (RSSI)/Reference Signal Received Quality (RSRQ) measured by the gNB, or CSI/CQI measurement results, or interference measurement results.

Through the measurement, at least one of the following channel or interference information can be obtained: precise channel measurements, channel matrix, eigenvector, covariance matrix, interference strength (or interference strength ranking), RRM measurements, CQI/PMI/RI.

And step three, optionally, the measurement gNB sends the measurement result information to the sending gNB through a backhaul (such as an X2 interface) or an air interface (such as OTA signaling).

The gNB1 measures downlink channel/interference conditions between the gnbs 2 and gNB1, and may obtain RRM measurement results (such as RSRP/RSSI/RSRQ measured by the gNB), CSI/CQI measurement results, or interference measurement results.

The transmitted measurement result information may be accurate information or quantitative information of the measurement result, and may include at least one of the following: precise channel measurements, channel matrix, eigenvector, covariance matrix, interference strength (or interference strength ranking), RRM measurements, CQI/PMI/RI.

For example, measuring gNB measures RSRP or path loss. The smaller the RSRP or the larger the path loss, the farther the sending base station is from the measuring base station. When the measurement base station receives UL, the less cross-link interference is experienced by the transmitting base station DL. Then the cross-link interference at this time should have less impact on the uplink power of the UE. When cross-link interference measurement results when the value is close to or about equal to 0, the cross-link interference does not affect the uplink power of the UE. The greater the cross-link interference, the greater the uplink power of the UE should be.

Conversely, the larger the RSRP or the smaller the path loss, the closer the transmitting base station is to the measuring base station. When the measurement base station receives UL, the greater the cross-link interference experienced by the transmitting base station DL. Then, at this time, the uplink power of the UE under the measurement base station needs to be raised, or a mechanism such as interference coordination in step four is adopted to reduce the impact of the cross-link interference on UL transmission.

Step four: according to the measurement result or the interacted measurement result information, performing interference coordination between two adjacent gnbs, where the interference coordination operation may specifically include at least one of the following:

sending gNB when scheduling DL, mapping the target downlink signal/channel in the null space of the interference channel;

sending the gNB when scheduling DL, and simulating the direction of the beam to avoid measuring the gNB;

measuring the gNB, when scheduling UL, not using omnidirectional receiving, and avoiding receiving the beam from the gNB sending direction;

when measuring the gNB and scheduling the UL, if cross-link interference exists for sending the gNB to receive the UL, one of the following modes can be adopted to avoid the interference: measuring the UL transmission of the gNB can raise the power delay the transmission change Modulation Coding Scheme (MCS), change transmission carrier, cancel transmission, and the like.

When transmitting the gNB and scheduling DL, if there is cross-link interference to transmit the gNB to measure the gNB UL reception at this time, one of the following methods may be adopted: DL transmissions to transmit the gNB may be reduced in power, delayed in transmission, changed in MCS, changed in transmission carrier, cancelled, etc.

Step five, because when the gNB is measured to transmit the DL signal, cross-link interference is also caused to UL reception for transmitting the gNB. Thus, the transmitting gNB also needs to obtain channel/interference conditions between the measuring gNB to the transmitting gNB.

The first method is as follows: based on the channel reciprocity, the sending gNB may scale to obtain the channel/interference condition between the measuring gNB and the sending gNB according to the measurement result information of the measuring gNB received in step three. For example, transposing the channel matrix from the gNB to the measurement gNB may obtain the channel matrix from the measurement gNB to the transmission gNB.

The second method comprises the following steps: and step one to step three are executed, and the gNB sending measurement obtains the channel/interference condition from the gNB measurement to the gNB sending measurement. At this time, the measurement gNB transmits a reference signal, and the transmission gNB performs the measurement.

In a second example of the above-described method,

The measurement is performed by a base station which prepares/is performing downlink transmission, the downlink transmission base station can cause cross-link interference to other adjacent uplink receiving base stations, and the main purpose of the measurement is to reduce the cross-link interference of the downlink transmission of the base station to the uplink reception of other base stations.

The main differences between this example and the first example are:

in this example, the transmitting base station is a victim base station, such as the gbb 1 of fig. 6, and transmits a reference signal for measurement. The measuring base station is an interfering base station, for example, the gNB2 in fig. 6, and the measuring base station receives the reference signal transmitted by the transmitting base station and performs measurement.

In addition, the measurement result and cross-link interference relationship of this example is also different from the first example:

for example, the measurement gNB measures received power (RSRP) or path loss of the reference signal.

The smaller the RSRP or the larger the path loss, the farther the transmitting base station is from the measuring base station. When the measurement base station transmits a DL signal, the less cross-link interference caused to UL reception of the transmission base station, the more power the measurement gNB may transmit the DL signal.

The larger the RSRP or the smaller the path loss, the closer the transmitting base station is to the measuring base station. When the measurement base station transmits a DL signal, the more cross-link interference is caused to UL signal reception of the transmission base station. Then, at this time, it is necessary to reduce the downlink power of the measuring base station, or reduce the cross-link interference influence on the UL reception of the transmitting base station by using mechanisms such as interference coordination in step four.

Except for the above differences, the measurement process of the present example is the same as or similar to the measurement process of the first example (especially step one to step three). Alternatively, the measurement result of the present example may also be obtained from the measurement results of the first example step one to step three based on channel reciprocity.

A third example:

to measurement/coordination between two or more UEs to enable cross-link interference measurements between UEs.

The UE which is prepared/is in downlink receiving is used for measuring, the downlink receiving UE can be interfered by the cross link of the adjacent uplink sending UE, and the measuring result after measurement can be used for reducing the cross link interference of other UE uplink sending to the downlink receiving of the UE.

Step one, sending a reference signal sent by UE according to sending configuration information. And the measurement UE receives the reference signal according to the measurement configuration information and executes measurement.

And sending the UE: in the measurement process, the sending UE sends a reference signal for measurement. For example, when an interfering UE transmits an UL signal, cross-link interference may be caused to DL reception by the interfered UE. In the measurement process, the interfering UE transmits a reference signal for measurement. Therefore, the transmitting UE here is an interfering UE. Such as UE1-1 in fig. 6.

And measuring the UE: in the measurement process, the measurement UE receives a reference signal transmitted by the transmitting UE, and performs measurement. For example, DL reception by an interfered UE may suffer from cross-link interference from interfering UE UL transmissions. In the measurement process, the interfered UE receives the reference signal sent by the interfering UE and performs measurement. Therefore, the measurement UE here is a victim UE. Such as UE2-1 in fig. 6.

For dynamic Time Division Duplex (TDD), the transmitting UE and the measuring UE belong to different cells. For full duplex, the transmitting UE and the measuring UE may belong to the same cell or may belong to different cells.

The reference signal may be used at least for inter-UE measurements, where the inter-UE measurements may be used for RRM measurements, CSI/CQI measurements, or interference measurements, or path loss measurements.

The reference signal for UE measurement may be UL DMRS, SRS, or a new measurement signal; the new measurement signal is a newly designed signal for RRM measurement or channel/interference measurement, for example, an uplink reference signal (UL RS) in an uplink and downlink Reference Signal (RS). Optionally, the reference signal used for UE measurement is a channel Sounding Reference Signal (SRS).

In order to reduce the complexity of measurement between UEs or to exchange less unnecessary information, the reference signal for measurement between UEs is transmitted at a fixed power value or a preset power value. That is, the reference signals for measurement between UEs may not be uplink power controlled. The reason is that if the reference signal power is varied, it needs to be notified to the base station to which the UE transmitting the reference signal belongs and needs to be notified by the base station to which the UE is measured.

Or, unless receiving the measurement signal power change or new power value information, the measurement UE may assume that the power of the measurement signal is not changed.

Optionally, the reference signal carries cell ID/base station information. Including at least one of: cell physical ID, or transmission point ID (such as TRP ID or AP ID), or the number of the cell/base station/transmitting device. The carrying mode can be implicit or explicit. The implicit way can be by ID scrambling as described above or by participating in the sequence generation of the reference signal.

Optionally, the reference signal carries ID information of the UE. For example: cell radio network temporary identity (C-RNTI), or UE number. Similarly, the carrying manner may be an implicit carrying manner or a display carrying manner. The implicit carrying mode may refer to implicit through scrambling of the UE ID information or generation of a sequence participating in a reference signal, where the display carrying is to directly carry the ID information. The UE number may comprise a UE number within a cell or a UE number within a set of cells. The implicit carrying mode can obtain the ID information through the mapping relation or the conversion relation of the other information carried in the reference signal and the ID information at the receiving end through the other information carried in the reference signal.

The reference signal transmission configuration information includes at least one of: transmitting subframe/time slot configuration information, transmitting period/transmitting offset information, port information, signal transmitting pattern configuration information and muted-RS resource configuration information.

And transmitting subframe/slot configuration information for indicating which subframes/slots the UE transmits the reference signal, typically determined by a corresponding transmission period and/or transmission offset, or triggered to transmit aperiodically.

Transmitting pattern configuration information for indicating a time-frequency pattern of an RS (SRS) transmitted by a UE, such as on which symbols and which REs of a subframe/slot reference signals are transmitted; the muted-RS resource configuration is used to indicate the subframe/slot, or time-frequency resource pattern, or port, in which the muted-RS is transmitted, and the RS is transmitted with zero power on these resources.

The UE measurement configuration information includes at least one of: measurement object information, measurement subframe/time slot configuration information, measurement period/measurement offset/measurement duration information, measurement pattern configuration information, muted-RS resource configuration information.

Measurement object information indicating with which UE the channel/interference condition between the UE and the measurement object may be indicated by a UE ID or renumbering the UE.

Measurement subframe/slot configuration information for indicating which subframes/slots the UE receives or measures the reference signal, typically determined by a corresponding measurement period and/or measurement offset and/or measurement duration, or triggering the measurement aperiodically.

Measurement pattern configuration information for instructing a UE to measure a time-frequency pattern of an RS (SRS), such as which symbols and which REs of a subframe/slot on which reference signals are measured; the muted-RS resource configuration is used to indicate the subframe/slot, or time-frequency resource pattern, or port, in which the muted-RS is transmitted, and the RS is transmitted with zero power on these resources. The UE measures the channel/interference conditions of neighboring UEs to itself on these resources.

And sending the configuration information to the sending UE by the base station to which the sending UE belongs. And the measurement configuration information is sent to the measurement UE by the base station to which the measurement UE belongs. Further, sending the UE-sent reference signal may be triggered by the base station aperiodically, and/or measuring the UE-measured reference signal may also be triggered by the base station aperiodically.

Further, the sending configuration information may be sent by the base station to which the sending UE belongs to the base station to which the measuring UE belongs and/or the neighboring base station to which the sending UE belongs through a backhaul link or an air interface. Further, the base station and/or the neighboring base station is/are sent to the subordinate UE by the measuring UE.

Further, the measurement configuration information may be sent by the base station to which the measurement UE belongs to the base station to which the sending UE belongs and/or the neighboring base station to which the measurement UE belongs through a backhaul link or an air interface.

The measurement configuration of the measuring UE may be generated according to the transmission configuration of the transmitting UE. For example, the measurement subframe/slot of the measurement UE may be a subset or the full set of transmit UE transmit configurations. For example, the period for transmitting the UE signal transmission is 20ms (assuming offset is 0), that is, in subframes such as 0/20/40/60/80. The measurement period for measuring the UE is 40ms, namely measuring in subframes such as 0/40/80 subframes.

The transmission of the reference signal by the transmitting UE for measuring the UE measurements may be an aperiodic or triggered transmission; measuring the UE measurement cross link interference may also be an aperiodic or triggered measurement. Alternatively, the former is a periodic transmission and the latter is an aperiodic measurement.

Optionally, the measurement UE does not receive the downlink signal/channel from the cell in the measurement resource. Or the base station performs a muting operation or does not schedule DL transmission in the measurement resources. And measuring the UE, wherein the base station does not schedule other UE to carry out UL transmission in the measurement resource.

Optionally, other UEs (not including the sending UE) in the vicinity of the measuring UE perform a muting operation in their measurement resources, do not send channels/signals, or operate in a muted-RS/zero transmit power mode according to the measurement configuration of the measuring UE. Other UEs in the vicinity may be in the same cell or in neighboring cells as the measuring UE. The measurement configuration of the measuring UE may be informed by the measuring UE of the base station and/or its neighbor base stations to the neighbor UEs of the measuring UE.

When the measurement UE measures the downlink channel/interference condition between the sending UE and the measurement UE, other UEs which can cause interference to the measurement UE are muted at the moment, so that the uncertain interference factors during the measurement of the measurement UE are reduced, the measurement accuracy is improved, and further interference coordination and elimination are facilitated.

The measurement UE measures the channel/interference condition between the sending UE and the measurement UE, and may obtain an RRM measurement result (such as RSRP/RSSI/RSRQ measured by the gNB), or a CSI/CQI measurement result, or an interference measurement result, or a path loss.

Channel or interference information may be obtained for at least one of: precise channel measurements, channel matrix, eigenvector, covariance matrix, interference strength (or interference strength ranking), RRM measurements, CQI/PMI/RI.

And step two, the measurement UE reports the measurement result information to the base station to which the measurement UE belongs. Optionally, the base station to which the measurement UE belongs sends the measurement UE to the base station through a backhaul (e.g., an X2 interface) or an air interface (e.g., OTA signaling).

The transmitted measurement result information may be accurate information or quantitative information of the measurement result, and may include at least one of the following: precise channel measurements, channel matrix, eigenvector, covariance matrix, interference strength (or interference strength ranking), RRM measurements, CQI/PMI/RI. The precise information here may directly include various measured values, and the quantitative information is information in which the measured values are processed by a grading process.

For example, the measuring UE measures RSRP or path loss. The smaller the RSRP or the larger the path loss, the farther the sending UE is from the measuring UE. When the measuring UE receives DL, the less cross-link interference is experienced by the transmitting UE UL. Then the cross-link interference at this time should have less influence on the downlink power corresponding to the UE. When the cross-link interference measurement result is close to or approximately equal to 0, the cross-link interference does not affect the downlink power adjustment of the UE. The greater the cross-link interference, the greater the downlink power of the UE should be.

Conversely, the larger the RSRP or the smaller the path loss, the closer the transmitting UE is to the measuring UE. When the measuring UE receives DL, the greater the cross-link interference experienced by the transmitting UE UL. Then, at this time, the downlink power corresponding to the UE to be measured needs to be raised, or mechanisms such as interference coordination in step three are adopted to reduce the influence of cross-link interference on DL reception, or even DL is not sent or sent in a delayed manner to the UE to be measured.

Step three: according to the measurement result or the interacted measurement result information, performing cross-link interference coordination between two adjacent gnbs or UEs, specifically adopting at least one of the following manners:

when transmitting UE carries out UL transmission, a target uplink signal/channel is mapped in a null space of an interference channel;

when the sending UE carries out UL sending, simulating the direction of the wave beam to avoid the measuring UE;

when the base station sends DL to the measurement UE, the measurement UE does not use omnidirectional reception and avoids receiving beams from the direction of sending the UE;

when the UE is measuring to receive DL, if there is cross-link interference of the transmitting UE to DL reception at this time, at least one of the following may be adopted: measuring the DL transmission corresponding to the UE may raise power, delay transmission, change MCS, change transmission carrier, cancel transmission, and so on.

When the sending UE sends UL, if there is cross-link interference to the measurement UE DL reception by the sending UE at this time, at least one of the following may be adopted: transmitting the UL transmission of the UE may reduce power, delay transmission, change MCS, change transmission carrier, cancel transmission, and so on.

Step four, conversely, when the UE transmits UL, cross-link interference is also caused to DL reception of the transmitting UE. Therefore, at this time, the transmitting UE and/or its base station also needs to obtain channel/interference conditions between the measuring UE and the transmitting UE.

The first method is as follows: and based on the reciprocity of the channel, according to the measurement result information of the measurement UE received in the step two, the gNB to which the sending UE belongs can be converted to obtain the channel/interference condition between the measurement UE and the sending UE. For example, transposing the channel matrix from the sending UE to the measuring UE may obtain the channel matrix from the measuring UE to the sending UE.

The second method comprises the following steps: and executing the step one to the step two, and the sending UE measures to obtain the channel/interference condition between the UE and the sending UE. At this time, the measurement UE transmits a reference signal, and the transmission UE performs measurement.

The fourth example:

measurement/coordination between two or more UEs is involved, and the problem of cross-link interference measurement between the UEs is mainly solved.

The measurement is performed by a UE that is prepared/performing uplink transmission, the UE that performs uplink transmission may cause cross-link interference to other adjacent downlink receiving UEs, and the main purpose of the measurement is to reduce the cross-link interference that the UE performs uplink transmission to other downlink receiving UEs.

The main differences between this example and the third example are: in the present example of the present invention,

the transmitting UE is a victim UE, such as UE1-2 of fig. 6, and transmits a reference signal for measurement.

The measurement UE is an interfering UE, such as UE1-1 in fig. 6, and receives the reference signal sent by the sending UE, and performs the measurement.

for example, the measuring UE measures RSRP or path loss.

The smaller the RSRP or the larger the path loss, the farther the sending UE is from the measuring UE. When the measurement UE transmits UL, the less cross-link interference caused by DL reception to the transmitting UE, the measurement UE may transmit at a larger UL power or a normal power. The cross-link interference has less influence on the uplink power control of the UE.

Conversely, the larger the RSRP or the smaller the path loss, the closer the transmitting UE is to the measuring UE. When the measurement UE transmits UL, the greater the cross-link interference caused to DL reception of the transmitting UE. Then, at this time, it is necessary to reduce the uplink power of the UE to be measured, or reduce the cross-link interference influence on the DL reception of the transmitting UE by using mechanisms such as interference coordination in the third exemplary step three. Even without sending or with delayed sending.

The measurement process of the present example is the same as or similar to the measurement process of the first example (especially step one to step two) except for the above differences. Alternatively, the measurement result of the present example may also be obtained from the first example step one to step two measurement results based on channel reciprocity.

A fifth example:

two categories of measurements are involved for cross link interference measurements between base stations or between UEs.

The first category is statistical cross-link interference measurement: it may also be referred to as semi-static cross-link interference measurement. Such as RRM measurements in the first to fourth examples. The statistical cross-link interference measurement generally has long measurement time or wide frequency domain, and the measurement result is relatively stable.

For example, by way of example one or two, gNB1 may measure the interference or channel matrix of gNB2 on itself; the interference or channel matrix of the gNB1 to itself may also be measured by the gNB2.

For example, by way of example three or four, UE1-1 may measure the interference or channel matrix for UE2-1 on itself; UE2-1 may also measure the interference or channel matrix of UE1-1 on itself.

Two neighboring base stations or two neighboring UEs may be measured by one party and the other party based on channel reciprocity. Both measurements are also possible.

The second category is instantaneous cross-link interference measurement: the instantaneous measurement time is very short, for example, several us to several hundred us. Instantaneous cross-link interference measurements are mainly used for devices to identify the transmission direction of neighboring devices.

The interference measurement method related to this example: obtaining RRM measurements and/or channel/interference conditions by statistical cross-link interference measurements; instantaneous cross-link interference measurements obtain the source or direction of interference.

Through statistical cross-link interference measurement, the interference condition or channel matrix of the gNB2 to the gNB1 is measured; the interference situation or channel matrix of the gNB1 to itself can also be measured by the gNB2. However, at this time, no traffic is actually transmitted except that the reference signal for the inter-base station measurement is transmitted by gNB1 or gNB2. Or, gNB1 receives UL traffic, but gNB2 may not have DL transmission at all, and thus, may not cause cross-link interference to gNB1. That is, although gNB1 obtains the possible cross-link interference situation or channel matrix for itself by gNB2, no cross-link interference actually occurs at this time. But once the cross-link interference problem occurs, this pre-measured result can be used for interference coordination or interference cancellation.

When there is DL transmission, gNB2 transmits sounding signal RS2 at a preset transmission position. Next, if the gbb 1 has UL traffic, the gbb 1 or UE1-1 performs instantaneous cross-link interference measurement at a predetermined measurement location, receives the RS2, and determines that the gbb 2 has DL transmission at this time. In addition to the pre-measured cross-link interference of gNB2 to gNB1, interference coordination or interference cancellation mechanisms can be performed between gNB1 or the two adjacent gNBs. The same applies to cross link interference measurements between UEs.

The preset transmission positions for transmitting the probe signals and the preset measurement positions for performing the instantaneous cross-link interference measurement have an association relationship, and are distributed in a time window, or in one/more symbols, or in a blank resource, for example.

A sixth example:

to the cross-link interference threshold problem,

the first method is as follows:

a first threshold value and/or a second threshold value is set. The method comprises the following specific steps:

setting a first threshold value, if the measurement result of the cross-link interference is less than or equal to the first threshold value, it may be said that there is no cross-link interference at this time, or even if there is cross-link interference, the cross-link interference may be ignored. At this time, the data can be normally transmitted without using an interference cancellation method. This transmission behavior may be referred to as a normal transmission mode.

If the cross-link interference measurement result is greater than or equal to the first threshold value, it may also indicate that cross-link interference exists at this time and may affect data transmission. It must be transmitted using interference cancellation methods, or not across the link at this time. This transmission behavior may be referred to as a post-interference-suppression transmission mode or as a mode in which simultaneous cross-link transmission is not possible.

Further, a second threshold value is set. Here, the second threshold value is larger than the first threshold value.

If the cross-link interference measurement result is greater than or equal to the first threshold value but less than or equal to the second threshold value, it may be said that cross-link interference exists but is not very serious. There is no need to stop transmission or co-directional transmission, but the transmission must be done after using interference cancellation methods. I.e. the above described interference suppressed transmission mode needs to be used. The following mechanism may be used: 1. power up or down; 2. changing the MCS;

if the cross-link interference measurement result is greater than or equal to the first threshold value and greater than the second threshold value, it may be said that cross-link interference exists and is very serious at this time. It cannot immediately transmit in the opposite direction to the interference. I.e. it is necessary to use the above-mentioned mode of not transmitting across the links at the same time. The following mechanism may be used: 1. co-directional transmission with the measured interferer. For example, if the transmission direction of the interference source is DL, the local cell should also be DL, that is, the same transmission direction is ensured; 2. stopping sending; 3. delaying the sending; 4. different time-frequency resources are used, e.g., different Physical Resource Blocks (PRBs) or subbands are used. 5. Replacing the transmitted carrier wave; and so on.

Further, there are two embodiments:

1. and the network side configures a first threshold value and/or a second threshold value, and the base station or the UE autonomously selects a corresponding sending mode according to the principle based on a comparison result of the cross-link interference and the threshold according to a measurement result of the cross-link interference.

2. The base station directly uses or configures the transmission mode for the UE according to the measurement result of the cross-link interference (the measurement result of the cross-link interference may be obtained by the base station itself or reported by the UE after measurement).

An eighth example:

the interference problem is related to an interference scenario between the gNB and the gNB, and particularly to the interference problem when a transmitting end adopts a directional beam (directional beam) and a receiving end adopts an omnidirectional receiving scenario.

As shown in fig. 7, the transmitting end (UE 2-1/UE2-2/UE2-3 under gNB1 and gNB 2) uses directional beam transmission, and the receiving end (UE 1-1 and gNB2 under gNB 1) uses omni-directional reception.

If there is a beam from gNB1 to gNB2, there is downlink transmission from gNB1 in this direction. At this time, no matter which position UE in the coverage of the gNB2 transmits UL data to the gNB2, the inter-base station cross-link interference is caused. That is, whether there is uplink cross-link interference from the downlink of one base station to the uplink of another base station depends mainly on the transmission beam of the gNB1.

This problem can be solved by one of the following steps, or a combination of several steps:

step one, interference source identification is executed. I.e. interference beam identification. The interfering base station transmits a reference signal in each directional beam, and the victim base station receives the reference signal and performs measurements.

Further, the interfered base station feeds back the sequence number of the interference wave beam or the channel/interference condition corresponding to the sequence number to the interfering base station. Optionally, the interfered base station only feeds back the sequence number of one or more interference beams with the largest interference to the interfered base station or the channel/interference condition corresponding to the sequence number to the interfered base station.

This process is similar to example one, in which at least one of the following information needs to be exchanged between the interfering gNB and the interfered gNB through a backhaul (e.g., X2 interface) or an air interface (e.g., OTA signaling): the reference signal sends configuration information and gNB measurement configuration information. Further, in example one, the reference signal transmission configuration information further includes a beam number (beam ID) of a transmission gNB (interference gNB), or the beam number and corresponding reference signal transmission configuration information.

The interfered gNB indicates the measurement result information to the interfering gNB. Further, on the basis of the first example, the measurement result information further includes a beam sequence number and corresponding measurement result information, or the interfered gNB feeds back one or more beam sequence numbers interfering with itself most to the interfering gNB.

For example, there are 4 beams for the gNB1DL transmission, reference signals are respectively transmitted in the 4 beams for Transmission (TX) beam 1, TX beam 2, TX beam 3, TX beam 4, gnbb 1, and the gNB2 transmits the reference signals according to the transmission configuration information of the reference signals for each beam indicated by the gNB1, receives the reference signals, and performs measurement. A channel/interference matrix corresponding to each beam is obtained, and then each beam number and the corresponding channel/interference condition are fed back to the gNB1. Alternatively, after evaluation, only one or several beam sequence numbers with the largest interference to itself are sent to the gNB1.

Here, it is assumed that TX beam 1 of gNB1 has the greatest influence on UL reception of gNB2. All uplink receptions of the gbb 1TX beam 1 and the gbb 2 constitute an interference pair.

And step two, according to the interference wave beam or the channel/interference condition determined in the step one, the interference base station and the interfered base station execute cross-link interference coordination.

Limiting or coordinating downlink transmission in the gNB TX beam 1, including at least one of:

a. interference gbb when scheduling DL transmission, the directional beam does not use TX beam 1;

b. the interfering gbb maps the target downlink signal/channel in the null space of the interfering channel when scheduling DL transmissions. The interference channel can be measured by the RS received by the interfered gNB and transmitted in the TX beam 1, and then fed back to the interfering gNB; or the interfered gNB sends the RS, the interfered gNB measures a channel, and then the interference matrix is obtained according to the channel reciprocity;

c. the DL power is reduced. Reducing UL interference to gbb 2.

d. Scheduling or transmission information of gNB2 is received, aligned with DL/UL transmission direction of gNB2. When gNB2 transmits DL, gNB1 will transmit DL in TX beam 1.

And e, when the gNB1 has downlink transmission, informing the gNB2 that the gNB2 does not schedule uplink transmission.

f. Priority may be set, with the downlink TX beam 1 of the gNB1 being a low priority transmission (since it is the interfering party and will interfere with all UL reception in the neighborhood). DL transmission in TX beam 1 is only done when there is no transmission or no UL direction transmission in the neighbor cell.

g. No DL transmission is performed in this beam. Or configure DL transmission with a longer period/interval.

h. The interfered gNB does not use omni-directional reception when scheduling UL transmissions, avoiding receiving beams from the direction of the interfering gNB. In the present invention, omni-directional reception may be by receiving signals from each direction, and directional reception may be by receiving signals in only a partial direction.

i. When the interfered gNB schedules UL transmission, if cross-link interference of the interfered gNB on UL reception exists at the time, one of the following methods can be adopted: UE UL transmission of the interfered gNB may power up, delay transmission, change MCS, change transmission carrier, cancel transmission, etc.;

when scheduling DL transmission, if there is cross-link interference from the interfering gNB to the interfered gNB UL reception, one of the following methods may be adopted: DL transmissions of interfering gnbs may reduce power, delay transmissions, change MCS, change transmission carriers, cancel transmissions, and the like.

In addition, other directional TX beams of gNB1 and gNB2 may not be limited to the above.

An eighth example:

the present invention relates to an interference scenario between a gNB and a gNB, and in particular, to an interference problem in a scenario in which a transmitting end and a receiving end use a directional beam (directional beam).

As shown in fig. 8, the transmitting end transmits using a directional beam, and the receiving end receives using a directional beam. At this time, only when the RX beam of the gNB2 overlaps with the TX beam of the gNB1, there is a cross-link interference caused by the downlink signal of one base station to the uplink of another base station.

Such cross-link interference may be detected by one or more of the following steps:

step one, interference source identification is executed. I.e. interference beam identification. The interfering base station transmits a reference signal in each directional beam, and the victim base station receives the reference signal in each directional beam and performs measurements. Each interference beam and receive beam will form a transmit receive beam pair. When there is interference or the interference exceeds a preset threshold, it can be called an interference beam pair.

For example, there are 4 beams for the gNB1DL transmission, and the reference signals are respectively transmitted in the 4 beams for the TX beam 1, TX beam 2, TX beam 3, TX beam 4, gnbb 1, and there are 4 beams for the gNB2 reception, which are respectively Reception (RX) beam 1, RX beam 2, RX beam 3, RX beam 4. According to each beam reference signal configuration indicated by the gNB1, the gNB2 receives a reference signal in each reception directional beam and performs measurement. So a matrix of 4*4 is formed:

[ TX beam 1-RX beam 1, TX beam 1-RX beam 2, TX beam 1-RX beam 3, TX beam 1-RX beam 4;

TX beam 2-RX beam 1, TX beam 2-RX beam 2, TX beam 2-RX beam 3, TX beam 2-RX beam 4;

TX beam 3-RX beam 1, TX beam 3-RX beam 2, TX beam 3-RX beam 3, TX beam 3-RX beam 4;

TX beam 4-RX beam 1, TX beam 4-RX beam 2, TX beam 4-RX beam 3, TX beam 4-RX beam 4]

Each value in the matrix is a transmit receive beam pair. The interfered gNB obtains a channel/interference matrix corresponding to each beam pair, and then feeds back the sequence number of each beam pair and the corresponding channel/interference condition to the gNB1. Optionally, only one or a few beam pair sequence numbers with the largest interference to itself, or interfering beam sequence numbers and/or corresponding channel/interference conditions are sent to the gNB1.

Here, assume that the cross-link interference relationship between gNB1DL and gNB2UL is: TX beam 1 of gNB1 has the greatest effect on RX beam 1 reception of gNB2. The gbb 1TX beam 1 and the gbb 2RX beam 1 form an interference beam pair. The gbb 2 sends the sequence number (and/or channel conditions) of the TX beam 1-RX beam 1 interfering beam pair, or only the interfering beam sequence number TX beam 1 (and/or channel conditions) to the gbb 1.

Other procedures are similar to the example one, the interfering gNB and the interfered gNB need to interact with at least one of the following information through a backhaul (e.g., X2 interface) or an air interface (e.g., OTA signaling): the reference signal sends configuration information and gNB measurement configuration information. Further, in example one, the reference signal transmission configuration information further includes a beam number (beam ID) of a transmission gNB (interference gNB), or the beam number and corresponding reference signal transmission configuration information.

The interfered gNB indicates the measurement result information to the interfering gNB. Further, on the basis of the first example, the measurement result information further includes a beam sequence number/a beam pair sequence number and corresponding measurement result information, or the interfered gNB feeds back one or more beam sequence numbers/beam pair sequence numbers that interfere most with itself to the interfering gNB.

And step two, according to the interference wave beam pair serial number and/or the corresponding channel/interference condition determined in the step one, the interference base station and the interfered base station execute cross-link interference coordination.

Limiting or coordinating downlink/uplink transmissions in the gNB1TX beam 1 and the gNB2RX beam 1, including at least one of:

b. the interfering gbb maps the target downlink signal/channel in the null space of the interfering channel when scheduling DL transmissions. The interference channel can be measured by the interfered gNB by receiving the RS transmitted in the TX beam 1 through the RX beam 1, and then feeding back to the interfering gNB; or the interfered gNB sends the RS, the interfered gNB measures a channel, and then the interference matrix is obtained according to the channel reciprocity;

c. the DL power in TX beam 1 is reduced. Reducing UL interference to gbb 2.

d. The scheduling or transmission information of gNB2 in RX beam 1 is received, aligned with the DL/UL transmission direction of gNB2. When gNB2 transmits DL in RX beam 1, gNB1 will only transmit DL in TX beam 1. When gNB2 schedules UL in RX beam 1, gNB1 can also schedule UL only in TX beam 1. Here the TX beam/RX beam does not represent the transmit and receive direction. Only the lobe width or the spread angle of the lobe is indicated.

e. gNB1 notifies gNB2 when there is downlink transmission in TX beam 1, and gNB2 does not schedule uplink transmission in RX beam 1.

f. Priority may be set, DL in gNB1TX beam 1 being high priority; or the UL of gNB2 in RX beam 1 is high priority. For example, when TX beam 1 has higher priority, when there is DL in gNB1TX beam 1, then the UL in RX beam 1 of gNB2 cannot transmit/receive or transmit/receive normally (but it will face interference from DL to its UL). Conversely, when there is UL in gNB2RX beam 1, then the DL in TX beam 1 by gNB1 cannot transmit.

g. DL transmissions are configured with longer periods/intervals within this TX beam 1. For example, TDD Configuration 0 is used.

i. When the interfered gNB schedules UL transmission, if there is cross-link interference from the interfering gNB to UL reception in RX beam 1, one of the following methods may be adopted: the UE UL transmission under the interfered gNB may power up, delay transmission, change MCS, change transmission carrier, cancel transmission, etc. And/or the presence of a gas in the gas,

when scheduling DL transmission, if there is cross-link interference from interfering gNB TX beam 1 to interfered gNB RX beam 1UL, one of the following methods may be adopted: DL transmissions of interfering gnbs may reduce power, delay transmissions, change MCS, change transmission carriers, cancel transmissions, and so on.

The ninth example:

when the measurement base station performs cross-link interference measurement, the measurement base station notifies the subordinate UE of the measurement resource or the measurement pattern. If the subordinate UE has uplink transmission, rate matching operation may be performed, such as resource puncturing, or no mapping of uplink signals or data on these measurement resources or measurement patterns. In order not to affect the measurement base station measurements.

For example, CSI-RS is used for cross-link interference measurements, such as CSI measurements or RRM measurements. Before a measurement base station performs interference measurement on a ZP CSI-RS (Zero-Power CSI-RS), the ZP CSI-RS resource configuration or pattern needs to be notified to UE. When the UE transmits in the UL, no UL signal or data is mapped on the ZP CSI-RS resource or pattern, or a resource puncturing operation is performed.

A tenth example:

when the measurement UE performs cross-link interference measurement, the base station performs rate matching operation on UE measurement resources or measurement patterns, for example, resource puncturing, or does not map downlink signals or data on these measurement resources or measurement patterns.

For example, SRS is used for cross-link interference measurements, such as CSI measurements or RRM measurements. The base station to which the measurement UE belongs does not map DL signals or data on ZP SRS (Zero-Power SRS), or performs a puncturing operation.

An eleventh example:

the problem of node hiding exists when a sending end senses or measures. For example, the sender performs sensing or measurement, and as a result, there is no cross-link interference, but once sending, there is strong cross-link interference on the receiver side, which may affect performance.

The solution is that the receiving end performs cross-link interference sensing or measurement. If the receiving end is the UE, the UE carries out cross-link interference sensing or measurement and reports the result to the gNB. If the receiving end is the gNB, the gNB adjusts scheduling or resource allocation or executes an interference elimination/coordination mechanism according to the result.

A twelfth example:

as analyzed above, dynamic TDD (or called flexible duplex, duplex flexibility, full duplex, etc. scenarios) has cross-link interference problems. The cross-link interference can be solved through an interference elimination mechanism, and an interference coordination mechanism is measurement perception, cooperative beam forming/cooperative scheduling, orthogonal uplink and downlink signal design and the like. However, due to the problem of timing deviation existing across links, a timing misalignment problem exists between target UL/DL reception and interference DL/UL across links, which causes a reduction in robustness of an interference coordination mechanism, and further affects performance of a dynamic TDD and other similar systems.

The solution is as follows:

introducing a new measurement: cross link timing offset for cross link to cross link timing offset measurement.

Further, the base station obtains the cross-link timing deviation between the base station and the adjacent base station through the measurement of the cross-link timing deviation. And/or the UE obtains the cross-link timing deviation with the adjacent UE through the measurement of the cross-link timing deviation.

Further, a new timing advance signaling word is introduced: a cross-link timing-advance command (CLI-TA) for carrying information of cross-link timing deviation to perform cross-link timing alignment, thereby solving the problem of cross-link synchronization. And the base station indicates the UE to adjust the uplink sending timing through the CLI-TA, or the base station adjusts the downlink sending timing of the base station according to the CLI-TA.

Specifically, for the cross-link timing offset measurement at the UE side:

this problem can be solved by one of the following steps, or a combination of several steps.

The method comprises the following steps: the base station configures and/or instructs the UE to perform cross-link timing offset measurements.

The information configuring/instructing the UE to perform the cross-link timing offset measurement may be carried through RRC signaling, or DCI, or MAC RE. The UE is preferably instructed to perform cross link timing offset measurements by RRC signaling or DCI.

For example, the UE may be instructed to perform periodic measurements through RRC signaling. Alternatively, the UE may be instructed to perform aperiodic measurements through the DCI.

The configuration may include subframe configuration, or slot configuration, or time-frequency resource configuration, or pattern configuration, or periodicity/offset/duration, etc., of the cross-link timing offset measurement.

Preferably, the base station may configure the UE to perform the cross-link timing deviation measurement simultaneously when performing the CLI RRM or CLI CSI measurement. For example, the UE makes cross-link timing offset measurements on ZP-SRS resources. And the adjacent UE sends SRS on the ZP-SRS resource of the UE.

The cross-link timing offset on the UE side varies more strongly than on the base station side. Therefore, the interval between two inter-link timing deviation measurements on the UE side is short compared to the inter-link timing deviation measurements on the base station side or the timing measurements in the conventional LTE. Thus, short periodic cross-link timing deviation measurements, or non-periodic cross-link timing deviation measurements, may be configured.

In particular, the base station dynamically instructs a specific UE to perform cross-link interference measurements based on the UE's location in the cell and/or UE reception performance such as BLER/SINR/CLI/RRM/CSI. For example, especially for cell edge UEs, or UEs with large CLI interference, the base station should instruct it to perform cross-link timing offset measurements. For cell center UEs, one cross-link timing offset measurement may not be indicated, or may be indicated for a longer period.

Step two: the UE performs cross-link timing offset measurements and reports the cross-link timing offset measurements to the base station.

And the UE executes cross-link timing deviation measurement with the adjacent UE according to the cross-link timing deviation measurement configuration or indication of the base station.

Preferably, the UE may perform the cross-link timing deviation measurement simultaneously when performing the CLI RRM or CLI CSI measurement. For example, the UE makes cross-link timing offset measurements on ZP-SRS resources. And the adjacent UE sends SRS on the ZP-SRS resource of the UE.

The UE reports the measurement result of the cross-link timing offset to the base station, and may report the measurement result in the following form: precision value, multiple of basic time unit (e.g., X, unit 1696s. Ts is basic time unit), quantization level of cross link timing deviation.

Step three: and the base station generates a cross-link synchronous operation strategy according to the cross-link timing deviation measurement result reported by the UE. For example: perform cross-link timing alignment, or not adjust cross-link timing alignment. Further, the following operations are performed:

the first scheme is as follows: and the base station adjusts the DL timing of the base station according to the cross-link timing deviation measurement result. For example, the downlink transmission timing for the UE may be advanced.

Scheme II: and the base station informs the base station of the adjacent UE of the cross-link timing deviation measurement result.

For the second scheme, the notification mode may be a backhaul link (such as an X2 interface or a private interface), or an air interface (such as OTA signaling). The cross-link timing offset measurement may be informed to the neighbor base station by: precision value, multiple of basic time unit (e.g., X, unit 1696s. Ts is basic time unit), quantization level of cross link timing deviation.

For the second scheme, further, the base station of the neighboring UE generates a cross-link timing advance command CLI-TA, and notifies it to the neighboring UE. For example by DCI or MAC CE. Preferably, the cross-link timing advance command CLI-TA is carried by the MAC CE. Further, the neighboring UE adjusts its uplink transmission timing according to the received CLI-TA.

Specifically, for the cross-link timing deviation measurement at the base station side:

The method comprises the following steps: the base station is configured to perform cross-link timing offset measurements.

Preferably, the base station may perform the cross-link timing deviation measurement simultaneously when performing the CLI RRM or CLI CSI measurement. For example, the base station performs cross-link timing offset measurements on the ZP-CSI-RS resources. And the adjacent base station sends the CSI-RS on the ZP-CSI-RS resource of the base station. Or when the base station receives the CSI-RS sent by the adjacent base station, the base station executes cross-link timing deviation measurement, and does not require whether the base station configures ZP CSI-RS resources.

The base station performing cross-link timing offset measurements with neighboring base stations may be periodic or aperiodic.

Because the positions of the two base stations are fixed and unchanged, the cross-link timing deviation change of the base station side is more stable than that of the UE side. Therefore, the interval between two inter-link timing deviation measurements on the base station side is long compared to the inter-link timing deviation measurement on the UE side. Thus, long periods of cross-link timing deviation measurements may be configured, or a longer time to trigger one aperiodic cross-link timing deviation measurement.

In particular, the base station dynamically triggers cross-link interference measurements based on UL reception performance such as BLER/SINR/CLI/RRM/CSI. For example, the UL reception performance of the base station is poor, or the CLI interference is large and exceeds a set threshold, the base station triggers to perform the aperiodic cross-link timing deviation measurement.

Step two: and generating a cross-link synchronous operation strategy by the base station according to the cross-link timing deviation measurement result. For example: perform cross-link timing alignment, or not adjust cross-link timing alignment. Further, the following operations are performed:

the first scheme is as follows: and the base station generates a cross-link timing advance command CLI-TA according to the cross-link timing deviation measurement result and informs the cross-link timing advance command CLI-TA to the UE. For example by DCI or MAC CE. Preferably, the cross-link timing advance command CLI-TA is carried by the MAC CE. Further, the UE adjusts its uplink transmission timing according to the received CLI-TA. For example, delaying transmission of UL across the link timing offset by a time unit.

Scheme II: and the base station informs the adjacent base station of the cross-link timing deviation measurement result.

For the second scheme, the notification manner may be a backhaul (e.g., X2 interface or private interface) or an air interface (e.g., OTA signaling). The cross-link timing offset measurement may be informed to the neighbor base station by: precision value, multiple of basic time unit (e.g., X, unit 1696s. Ts is basic time unit), quantization level of cross link timing deviation.

For the second scheme, further, the neighboring base station adjusts its downlink transmission timing according to the received cross-link timing deviation result. For example, the downlink transmit timing may be advanced by the cross-link timing offset by a time unit.

In an embodiment or example of the invention, the timing deviation measurement may be understood as a measure of the severity of an out-of-synchronization phenomenon between two communication nodes. The embodiment of the present invention further provides a computer-readable storage medium, in which computer-executable instructions are stored, and the computer-executable instructions can be used for a computer to execute the interference measurement provided by any one of the above technical solutions.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only one logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all the functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. An interference measurement method, comprising:

measuring the first reference signal according to the first sending configuration information to form a first measurement result;

the first measurement result is an interference measurement of a first channel from the second communication device to the first communication device;

the method further comprises the following steps:

or the like, or, alternatively,

the first communication equipment sends second sending configuration information to the second communication equipment;

transmitting a second reference signal based on the second transmission configuration information, wherein the second reference signal is used for forming a second measurement result from the first communication device to the second communication device.

2. The method of claim 1, further comprising:

acquiring first measurement configuration information before measuring the first reference signal;

sending the first measurement configuration information to a third communication device, or executing resource scheduling according to the first measurement configuration information; wherein the first measurement configuration information at least comprises: first muting configuration information; the first muting configuration information is used to indicate a predetermined time-frequency resource for prohibiting the third communication device from transmitting signals, and the third communication device includes at least one of: the second communication device, a device adjacent to the first communication device, and a communication device to which the first communication device is connected.

3. The method of claim 2,

the first measurement configuration information further includes at least one of:

measurement subframe information for indicating a measurement subframe;

measurement time slot information for indicating a measurement time slot;

measurement period information for indicating a measurement period;

measuring duration information for indicating duration of one measurement;

4. The method of claim 2,

the first muting configuration information comprises at least one of:

silence slot information for indicating a silence slot where transmission of a signal is prohibited;

silence port information for indicating a port to which transmission of a signal is prohibited;

5. The method according to any one of claims 1 to 4,

the first transmission configuration information comprises at least one of:

6. The method according to any one of claims 1 to 4,

the method further comprises the following steps:

or the like, or, alternatively,

7. The method according to any one of claims 1 to 4,

the measuring the first reference signal according to the first sending configuration information to form a first measurement result, including:

8. The method according to any one of claims 1 to 4,

9. The method according to any one of claims 1 to 4,

the first measurement result is used for being compared with a comparison threshold to form a comparison result;

and the comparison result is used for determining whether cross-link interference exists and/or the cross-link interference degree exists.

10. The method according to any one of claims 1 to 4,

if the first communication equipment is interference equipment, the second communication equipment is interfered equipment;

and if the first communication equipment is interfered equipment, the first communication equipment is interference equipment.

11. An interference measurement method, comprising:

the second communication equipment acquires first sending configuration information of the first reference signal; if the second communication equipment is the first base station, the first communication equipment is the second base station or User Equipment (UE) connected in a cell formed by the second base station; if the second communication device is a first UE, the first communication device is a second UE or a neighboring base station of a base station connected with the first UE;

transmitting the first reference signal according to the first transmission configuration information; the first reference signal is used for the first communication device to measure and form a first measurement result;

the method further comprises the following steps:

or the like, or a combination thereof,

and measuring a second reference signal according to the second sending configuration information.

12. The method of claim 11, further comprising:

receiving first measurement configuration information sent by the first communication equipment; the first measurement configuration information includes at least: first muting configuration information;

and shielding the operation of sending signals in a preset time-frequency resource by the adjacent equipment of the first communication equipment according to the first silence configuration information.

13. The method according to claim 11 or 12,

the first transmission configuration information comprises at least one of:

14. The method according to claim 11 or 12,

the method further comprises the following steps:

receiving the first measurement result;

15. An interference measurement device, applied to a first communication device, includes:

a first obtaining unit, configured to first send configuration information; the first sending configuration information is configuration information of a first reference signal sent by a second communication device; if the second communication equipment is a first base station, the first communication equipment is a second base station or User Equipment (UE) connected in a cell formed by the second base station; if the second communication device is a first UE, the first communication device is a second UE or a neighboring base station of a base station connected with the first UE;

a first measurement unit, configured to measure the first reference signal according to the first sending configuration information to form a first measurement result;

the first measurement unit is further configured to obtain a second measurement result of a second channel from the first communication device to the second communication device based on reciprocity of channels and the first measurement result;

or, the apparatus further comprises:

16. The apparatus of claim 15, further comprising:

an obtaining unit, configured to obtain first measurement configuration information before measuring the first reference signal;

a first sending unit, configured to send the first measurement configuration information to a third communication device, or,

a scheduling unit, configured to perform resource scheduling according to the first measurement configuration information; wherein the first measurement configuration information at least comprises: first muting configuration information; the first muting configuration information is used to indicate a predetermined time-frequency resource for prohibiting a third communication device from sending a signal, and the third communication device includes: the adjacent equipment of the first communication equipment and the communication equipment connected with the first communication equipment.

17. The apparatus of claim 16,

measurement subframe information for indicating a measurement subframe;

measurement time slot information for indicating a measurement time slot;

measurement period information for indicating a measurement period;

measuring duration information for indicating duration of one measurement;

18. The apparatus of claim 16,

the first muting configuration information comprises at least one of:

silent subframe information for indicating a silent subframe in which transmission of a signal is prohibited;

silence slot information indicating a silence slot for which transmission of a signal is prohibited

Silence time-frequency pattern information used for indicating the time-frequency resource which forbids sending signals;

19. The apparatus of any one of claims 15 to 18,

the first transmission configuration information comprises at least one of:

20. The apparatus of any one of claims 15 to 18,

the device further comprises:

or the like, or, alternatively,

21. The apparatus of any one of claims 15 to 18,

the first measurement unit is specifically configured to measure the first reference signal and obtain a RRM measurement result and/or a channel measurement result and/or interference condition information of radio signal management when performing statistical cross-link interference measurement; and when the instantaneous cross-link interference measurement is carried out, measuring the first reference signal, and obtaining an interference source and/or an interference direction and/or a channel state information result and/or interference condition information.

22. The apparatus of any one of claims 15 to 18,

the first measurement unit is specifically configured to identify a beam to obtain beam identification information if the first reference signal is transmitted by using the beam; wherein the beam identification information is a component of the first measurement result.

23. The apparatus of any one of claims 15 to 18,

24. The apparatus of any one of claims 15 to 18,

25. An interference measurement device, applied to a second communication device, includes:

a second obtaining unit, configured to obtain first sending configuration information of the first reference signal; if the second communication equipment is the first base station, the first communication equipment is the second base station or User Equipment (UE) connected in a cell formed by the second base station; if the second communication device is a first UE, the first communication device is a second UE or a neighboring base station of a base station connected with the first UE;

a second sending unit, further configured to send the first reference signal according to the first sending configuration information; the first reference signal is used for the first communication device to measure and form a first measurement result;

the device further comprises:

and the second sending unit is used for measuring a second reference signal according to the second sending configuration information.

26. The apparatus of claim 25, further comprising:

and the execution unit is used for shielding the operation that the adjacent equipment of the first communication equipment sends signals in a preset time-frequency resource according to the first silence configuration information.

27. The apparatus of claim 25 or 26,

the first transmission configuration information comprises at least one of:

28. The apparatus of claim 25 or 26, further comprising:

a second receiving unit, configured to receive the first measurement result;