CN115802371A - Interference detection method and communication device in wireless communication - Google Patents

Interference detection method and communication device in wireless communication Download PDF

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Publication number
CN115802371A
CN115802371A CN202111064567.1A CN202111064567A CN115802371A CN 115802371 A CN115802371 A CN 115802371A CN 202111064567 A CN202111064567 A CN 202111064567A CN 115802371 A CN115802371 A CN 115802371A
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cell
access network
terminal device
indication information
network device
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江业
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The application provides an interference detection method and a communication device in wireless communication. A first access network device receives first indication information from a first terminal device, wherein the first indication information is used for indicating at least one cell, a serving cell of the first terminal device is a first cell, and the first cell is a cell of the first access network device; the first access network device sends second indication information to a second access network device, where the second indication information is used to indicate the second access network device to perform interference measurement in a second cell according to the reference signal of the first terminal device, where the at least one cell includes the second cell, and the second cell is a cell of the second access network device. So as to reduce communication interference and improve communication reliability.

Description

Interference detection method and communication device in wireless communication
Technical Field
The present application relates to the field of communications, and more particularly, to an interference detection method and a communication apparatus in wireless communication.
Background
In a mobile communication system, an access network device using a Time Division Duplex (TDD) communication mode may configure a ratio of uplink transmission time to downlink transmission time according to a requirement, for example, a business facing an enterprise (to business, toB) in a campus or an indoor environment has a high requirement for uplink transmission, and may configure an uplink transmission time ratio to be greater than a downlink transmission time ratio. For a service that the outdoor macro network mainly faces to a client (ToC), the downlink transmission requirement is high, and the downlink transmission time ratio can be configured to be larger than the downlink transmission time ratio.
Adjacent access network devices adopt different uplink and downlink transmission time ratios, which may cause cross-link interference (CLI), that is, a downlink transmission signal of one access network device may interfere with an uplink reception signal of another access network device in the same time period. The interfered access network device (called interfered access network device) can determine an interference cell and an interference beam of the interference access network device by receiving a reference signal of the interference access network device so as to reduce the CLI through interaction.
However, when networking the different frequencies, the operating frequency bands of the interfered access network device and the interfered access network device may be different, and the interfered access network device cannot detect the reference signal sent by the interfered access network device in the frequency band outside the operating frequency band, so that the above interference detection method by the interfered access network device is not suitable for reducing the CLI of the adjacent frequency.
Disclosure of Invention
The application provides an interference detection method and a communication device in wireless communication, which can reduce communication interference and improve communication reliability.
In a first aspect, a communication method is provided, which may be performed by a network device or a module (e.g., a chip) configured with (or used for) the network device.
The method comprises the following steps: a first access network device receives first indication information from a first terminal device, wherein the first indication information is used for indicating at least one cell, a serving cell of the first terminal device is a first cell, and the first cell is a cell of the first access network device; the first access network device sends second indication information to a second access network device, where the second indication information is used to indicate the second access network device to perform interference measurement in a second cell according to the reference signal of the first terminal device, where the at least one cell includes the second cell, and the second cell is a cell of the second access network device.
According to the scheme, the interfered access network device can obtain the indication of the terminal equipment and inform the interfering access network equipment to execute interference detection according to the signal of the terminal equipment of the interfered cell. The terminal equipment served by a disturbed cell (disturbed cell of the disturbed access network equipment) is communicated with the disturbing access network equipment, so that the disturbing access network equipment measures signals of the terminal equipment to determine an interference beam, CLI is reduced or eliminated, and communication quality is improved. The communication method can be applied to the interference elimination between the access network devices of the same-frequency networking and can also be applied to the interference elimination between the access network devices of the different-frequency networking. The CLI can be reduced or eliminated by adopting the same solution in the same system, the condition that different solutions are adopted for different scenes is avoided, and the complexity of system development is reduced.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes:
the first access network device sends first configuration information to the first terminal device, where the first configuration information is used for the first terminal device to measure signal quality of multiple cells, where the multiple cells include the at least one cell.
With reference to the first aspect, in some embodiments of the first aspect, the at least one cell is a cell of the plurality of cells, where the signal quality is greater than or equal to a first threshold value.
According to the above scheme, the first terminal device may measure the signal quality of multiple cells according to the configuration information of the first access network device, and notify at least one cell, that is, an interfering cell, of which the signal quality is greater than or equal to that of the first access network device through the first indication information, so that the first access network device can notify the access network device of the interfering cell to perform interference measurement, thereby achieving reduction of CLI or elimination of CLI.
With reference to the first aspect, in certain implementations of the first aspect, the receiving, by the first access network apparatus, the first indication information from the first terminal device includes: the first access network apparatus receives measurement report information from the first terminal device, the measurement report information including the first indication information and signal quality information indicating signal quality of the at least one cell, and the method further includes: and the first access network device determines the second cell according to the signal quality of the at least one cell, wherein the signal quality of the second cell is greater than or equal to a first threshold value.
According to the above scheme, after measuring the signal quality of at least one cell, the first terminal device may send the signal quality of at least one cell to the first access network apparatus, and the first access network apparatus determines an interfering cell, such as the second cell, whose signal quality is greater than or equal to the first threshold according to the signal quality of the at least one cell, so as to notify the access network apparatus of the interfering cell to perform interference measurement, thereby implementing reduction of CLI or elimination of CLI.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the first access network apparatus receiving a reference signal from at least one terminal device in the first cell; and the first access network device determines the first terminal equipment from the at least one terminal equipment according to the reference signal of the at least one terminal equipment, wherein the signal quality of the reference signal of the first terminal equipment is greater than or equal to a second threshold value.
According to the above scheme, the first access network apparatus may select, according to the signal quality of the terminal device served by the first cell, the terminal device with better signal quality as the terminal device for measuring the interference of the neighboring cell. The terminal equipment with the signal quality larger than the second threshold value can be considered to be located near the center of the cell, so that the interference condition of most terminal equipment in the cell on the adjacent cell can be reflected, and the first access network device can accurately determine the interference cell.
With reference to the first aspect, in certain implementations of the first aspect, the operating carrier of the second cell is different from the operating carrier of the first cell, and the method further includes:
the first access network device sends third indication information to the first terminal equipment, the third indication information is used for indicating the first terminal equipment to add the second cell as a member cell of the carrier aggregation communication of the first terminal equipment, and/or,
and the first access network device sends fourth indication information to the second access network device, where the fourth indication information is used to indicate the second access network device to add the second cell as a member cell of the carrier aggregation communication of the first terminal device.
According to the above scheme, when the working carrier of the first cell is different from the working carrier of the second cell, the second cell may be added as a member cell of the carrier aggregation of the first terminal device, so that the second access apparatus may communicate with the first terminal device, and perform interference measurement of the second cell based on the reference signal of the first terminal device is achieved.
In a second aspect, a communication method is provided, which may be performed by a terminal device or a module (e.g., a chip) configured in (or used for) the terminal device.
The method comprises the following steps: the second access network device receives second indication information from the first access network device, wherein the second indication information is used for indicating the second access network device to perform interference measurement in a second cell according to a reference signal of first terminal equipment, a serving cell of the first terminal equipment is a first cell, and the first cell is a cell of the first access network device; the second access network device receiving a reference signal from the first terminal equipment; the second access network device determines at least one downlink beam of the second cell according to the reference signal; the second access network device does not use the at least one downlink beam to send signals in an uplink time unit of the first cell, and the uplink time unit is a time unit for transmitting uplink signals in the first cell.
According to the scheme, the interference applying access network device can measure the reference signal of the terminal equipment of the interfered cell according to the indication of the interfered access network device, and determine the interference wave beam to reduce CLI or eliminate CLI. The communication method can be applied to the interference elimination between the access network devices of the same-frequency networking and can also be applied to the interference elimination between the access network devices of the different-frequency networking. The CLI can be reduced or eliminated by adopting the same solution in the same system, the condition that different solutions are adopted for different scenes is avoided, and the complexity of system development is reduced.
With reference to the second aspect, in certain implementations of the second aspect, the method further includes: and the second access network device receives fourth indication information sent by the first access network device, wherein the fourth indication information is used for indicating the second access network device to add the second cell as the member cell of the carrier aggregation communication of the first terminal equipment.
With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the second access network device sends fifth indication information to the first terminal equipment, wherein the fifth indication information is used for indicating reference signal resources of a second cell, and the reference signal resources are used for bearing the reference signals; the second access network device receiving the reference signal from the first terminal equipment, including: the second access network apparatus receives the reference signal from the first terminal device on the reference signal resource.
In a design, the apparatus may include a module that performs one-to-one correspondence of the method/operation/step/action described in the first aspect, where the module may be implemented by hardware circuit, or by software, or by a combination of hardware circuit and software. In one design, the apparatus includes: a transceiver unit, configured to receive first indication information from a first terminal device, where the first indication information is used to indicate at least one cell, where a serving cell of the first terminal device is a first cell, and the first cell is a cell of a first access network apparatus; a processing unit, configured to determine the at least one cell according to the first indication information; the transceiver unit is further configured to send second indication information to a second access network device, where the second indication information is used to indicate the second access network device to perform interference measurement in a second cell according to the reference signal of the first terminal device, where the at least one cell includes the second cell, and the second cell is a cell of the second access network device.
With reference to the third aspect, in certain implementations of the third aspect, the transceiver unit is specifically configured to receive measurement report information from the first terminal device, where the measurement report information includes the first indication information and signal quality information, where the signal quality information is used to indicate signal quality of the at least one cell, and the processing unit is further configured to determine the second cell according to the signal quality of the at least one cell, where the signal quality of the second cell is greater than or equal to a first threshold value.
With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is further configured to send, to the first terminal device, first configuration information, where the first configuration information is used for the first terminal device to measure signal qualities of multiple cells, where the multiple cells include the at least one cell.
With reference to the third aspect, in certain implementations of the third aspect, the transceiver unit is further configured to receive, at the first cell, a reference signal from at least one terminal device; the processing unit is further configured to determine the first terminal device from the at least one terminal device according to the reference signal of the at least one terminal device, where the signal quality of the reference signal of the first terminal device is greater than or equal to a second threshold value.
With reference to the third aspect, in certain implementation manners of the third aspect, the working carrier of the second cell is different from the working carrier of the first cell, the transceiving unit is further configured to send third indication information to the first terminal device, where the third indication information is used to indicate the first terminal device to add the second cell as a member cell of carrier aggregation communication of the first terminal device, and/or the transceiving unit is further configured to send fourth indication information to the second access network apparatus, where the fourth indication information is used to indicate the second access network apparatus to add the second cell as a member cell of carrier aggregation communication of the first terminal device.
In a fourth aspect, a communication device is provided, where the communication device is a second access network device, and in one design, the device may include a module that performs a one-to-one correspondence to the method/operation/step/action described in the second aspect, where the module may be a hardware circuit, or may be software, or may be implemented by a combination of a hardware circuit and a software circuit. In one design, the apparatus includes: a transceiving unit, configured to receive second indication information from a first access network apparatus, where the second indication information is used to indicate that the second access network apparatus performs interference measurement in a second cell according to a reference signal of a first terminal device, a serving cell of the first terminal device is a first cell, and the first cell is a cell of the first access network apparatus; the transceiver unit is further configured to receive a reference signal from the first terminal device; a processing unit, configured to determine at least one downlink beam of the second cell according to the reference signal; the processing unit is further configured to transmit a signal without using the at least one downlink beam in an uplink time unit of the first cell, where the uplink time unit is a time unit for transmitting an uplink signal in the first cell.
With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiving unit is further configured to receive fourth indication information sent by the first access network apparatus, where the fourth indication information is used to indicate that the second cell is added as a component cell of the carrier aggregation communication of the first terminal device.
With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to send fifth indication information to the first terminal device, where the fifth indication information is used to indicate a reference signal resource of the second cell, and the reference signal resource is used to carry the reference signal; the transceiver unit is specifically configured to receive the reference signal from the first terminal device on the reference signal resource.
In a fifth aspect, there is provided a communication system comprising a first access network apparatus as described in any of the third or third aspects, and a second access network apparatus as described in any of the fourth or fourth aspects.
With reference to the fifth aspect, in some implementations of the fifth aspect, the communication system further includes a first terminal device.
With reference to the fifth aspect, in some implementations of the fifth aspect, the first terminal device sends the first indication information to the first access network apparatus, where the first indication information indicates at least one cell.
It should be noted that, in the fifth aspect, the same or similar parts as those described in the above four aspects may be referred to the description in the foregoing, and for brevity, no further description is provided here.
With reference to the fifth aspect, in certain implementations of the fifth aspect, the first terminal device sends measurement report information to the first access network apparatus, where the measurement report information includes the first indication information and signal quality information, and the signal quality information is used to indicate signal quality of the at least one cell.
With reference to the fifth aspect, in some implementations of the fifth aspect, the first terminal device receives first configuration information from the first access network apparatus, the first configuration information being used for measurement, by the first terminal device, of signal quality of a plurality of cells, the plurality of cells including the at least one cell.
With reference to the fifth aspect, in some implementations of the fifth aspect, the first terminal device receives third indication information from the first access network apparatus, where the third indication information is used to instruct the first terminal device to add the second cell as a member cell of carrier aggregation communication of the first terminal device.
With reference to the fifth aspect, in some implementations of the fifth aspect, the first terminal device sends the reference signal to the second access network apparatus.
With reference to the fifth aspect, in some implementations of the fifth aspect, the second access network apparatus sends, to the first terminal device, fifth indication information, where the fifth indication information is used to indicate reference signal resources of the second cell, and the reference signal resources are used to carry the reference signal.
In a sixth aspect, a communications apparatus is provided that includes a processor. The processor may implement the method of the first aspect as well as any one of the possible implementations of the first aspect. Optionally, the communication device further comprises a memory, and the processor is coupled to the memory and configured to execute the instructions in the memory to implement the method in any one of the possible implementations of the first aspect and the first aspect. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface. In the embodiment of the present application, the communication interface may be a transceiver, a pin, a circuit, a bus, a module, or other types of communication interfaces, and is not limited.
In one implementation, the communication device is a first access network device. When the communication device is a first access network device, the communication interface may be a transceiver, or an input/output interface.
In another implementation, the communication device is a chip configured in the first access network device. When the communication device is a chip configured in the first access network device, the communication interface may be an input/output interface, and the processor may be a logic circuit.
Alternatively, the transceiver may be a transmit-receive circuit. Alternatively, the input/output interface may be an input/output circuit.
In a seventh aspect, a communications apparatus is provided that includes a processor. The processor may implement the method of the second aspect described above and any one of the possible implementations of the second aspect. Optionally, the communication device further comprises a memory, and the processor is coupled to the memory and configured to execute the instructions in the memory to implement the method of any one of the possible implementations of the second aspect and the second aspect. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface. In the embodiment of the present application, the communication interface may be a transceiver, a pin, a circuit, a bus, a module, or other types of communication interfaces, without limitation.
In one implementation, the communication device is a second access network device. When the communication device is a second access network device, the communication interface may be a transceiver, or an input/output interface.
In another implementation, the communication device is a chip configured in the second access network device. When the communication device is a chip configured in the second access network device, the communication interface may be an input/output interface, and the processor may be a logic circuit.
Alternatively, the transceiver may be a transmit-receive circuit. Alternatively, the input/output interface may be an input/output circuit.
In an eighth aspect, a processor is provided, comprising: input circuit, output circuit and processing circuit. The processing circuitry is configured to receive signals via the input circuitry and to transmit signals via the output circuitry, such that the processor performs the method of any one of the possible implementations of the first aspect and the first aspect, or such that the processor performs the method of any one of the possible implementations of the second aspect and the second aspect.
In a specific implementation process, the processor may be one or more chips, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, various logic circuits, and the like. The input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver, the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter, and the input circuit and the output circuit may be the same circuit that functions as the input circuit and the output circuit, respectively, at different times. The embodiment of the present application does not limit the specific implementation manner of the processor and various circuits.
In a ninth aspect, there is provided a computer program product comprising: a computer program (which may also be referred to as code, or instructions), which when executed, causes a computer to perform the method of any one of the possible implementations of the first aspect and the first aspect, or causes a computer to perform the method of any one of the possible implementations of the second aspect and the second aspect.
A tenth aspect provides a computer-readable storage medium storing a computer program (which may also be referred to as code or instructions), which when executed on a computer, causes the computer to perform the method of any one of the above-mentioned first aspect and possible implementation manners of the first aspect, or causes the computer to perform the method of any one of the second aspect and possible implementation manners of the second aspect.
Drawings
FIG. 1 is a schematic diagram of a communication system suitable for use with embodiments of the present application;
fig. 2 is a schematic flow chart of a communication method provided in an embodiment of the present application;
fig. 3 is a schematic diagram of carrier aggregation provided in an embodiment of the present application;
fig. 4 is a schematic diagram of an uplink and downlink time unit allocation situation of two cells according to an embodiment of the present application;
fig. 5 is a schematic block diagram of a communication device provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;
fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present application.
Detailed Description
The technical solution in the present application will be described below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
The terms "first," "second," and the like in the description and in the claims, and in the drawings, of the embodiments of the application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The technical scheme of the embodiment of the application can be applied to various communication systems, for example: long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, fifth generation (5 th generation,5 g) systems, or New Radio (NR) and future communication systems, such as sixth generation mobile communication systems. This is not a limitation of the present application.
Fig. 1 is a schematic diagram of a communication system suitable for use in an embodiment of the present application.
The communication system may include at least two access network devices, such as the access network device 101 and the access network device 102 shown in fig. 1, and at least one terminal device, such as the terminal device shown in fig. 1 by way of example, including a handset 103, a camera 104 with wireless communication capability, a printer 105, and a computer 106. But the application is not limited thereto.
The downlink time unit occupancy rate corresponding to the access network device 101 is greater than the uplink time unit occupancy rate. The time unit may be a time period of a preset duration, and as an example and not a limitation, the time unit in this embodiment may be a slot (slot), a sub-frame (sub-frame), or a frame (frame). The downlink time unit corresponding to the access network device refers to a time unit used by the access network device to send a downlink signal to the terminal device, and the uplink time unit corresponding to the access network device refers to a time unit used by the access network device to receive an uplink signal from the terminal device. For example, the allocation ratio of the downlink time unit to the uplink time unit of the downlink master may be 4.
The downlink time unit occupancy rate corresponding to the access network device 102 is smaller than the uplink time unit occupancy rate. For example, the allocation ratio of the downlink time unit and the uplink time unit of the uplink master may be 2.
Wherein each time unit comprises a plurality of sub-time units. And the sub-time units in the uplink time unit are all used for transmitting uplink signals. And the sub-time units in the downlink time unit are all used for transmitting downlink signals. The special time unit comprises a sub-time unit used for transmitting a downlink signal and a sub-time unit used for transmitting an uplink signal.
By way of example and not limitation, a sub-time unit may be a modulation symbol, such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol.
Taking the LTE system as an example, one subframe (i.e. one example of a time unit) has a time length of 1 ms, one subframe includes 14 OFDM symbols, one OFDM symbol has a time length of 66.7 μ s, one special subframe (i.e. one example of a special time unit) may include at least one OFDM symbol for transmitting downlink signals, and include at least one OFDM symbol for transmitting uplink signals. But the application is not limited thereto. The time unit provided by the embodiment of the present application may be a time unit in an NR system or a time unit with other time lengths, and the time length of the time unit may be determined according to specific implementation requirements.
It should be noted that the downlink signal may include one or more of a downlink reference signal, downlink data, or downlink control information, but the application is not limited thereto. The uplink signal may include one or more of an uplink reference signal, uplink data, or uplink control information, but the application is not limited thereto.
As shown in fig. 1, D indicates a downlink time unit, S indicates a special time unit, and U indicates an uplink time unit. In the case of uplink and downlink allocation of time units of the access network device 101, time units 0, 1, 2, 5, and 6 are downlink time units, time units 3 and 7 are special time units, and time units 4, 8, and 9 are uplink time units. In the case of uplink and downlink allocation of time units of the access network device 102, time units 0 and 5 are downlink time units, time units 1 and 6 are special time units, and time units 2, 3, and 4 and time units 7, 8, and 9 are uplink time units.
For example, the access network device 101 shown in fig. 1 may be a macro base station, and the access network device 102 may be a micro base station or a pico base station. It should be noted that the macro base station, the micro base station, and the pico base station have different transmission powers, and the transmission power of the macro base station is the maximum, for example, the transmission power of the macro base station is generally 10 watts or more. The micro base station has a smaller transmit power than the macro base station, e.g., the micro base station typically has a transmit power between 500 mw and 10 w. The transmitting power of the pico base station is less than that of the micro base station. For example, the transmit power of a pico base station is typically between 100 and 500 milliwatts. The macro base station has a large signal transmission power and a wide downlink coverage, while the terminal device has a relatively small signal transmission power, so that, as shown in fig. 1, in time units 1, 2, 3, 6, and 7, the downlink of the macro base station (i.e., access network device 101) may cause interference to the pico base station (i.e., access network device 102) receiving the uplink signal from the terminal device. The communication method provided by the embodiment of the application can be adopted to perform interference measurement so as to reduce interference.
As shown in fig. 1, in the communication system, a cell of the access network device 101 and a cell of the access network device 102 may be configured in the same frequency (i.e., carrier frequencies of the two cells are the same) or in different frequencies (i.e., carrier frequencies of the two cells are different). The method provided by the embodiment of the application can be adopted for interference detection in both the CLI in the same-frequency networking scene and the different-frequency networking scene, so that the CLI is reduced or eliminated.
The terminal device in the embodiments of the present application may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a mobile phone, a tablet computer, a computer with a wireless transceiving function, a printer, a camera, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in remote medical treatment, a wireless terminal in a smart grid, a wireless terminal in transportation security, a wireless terminal in a smart city, a wireless terminal in a smart home, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a wireless communication function, a computing device, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a PLMN device in a Public Land Mobile Network (PLMN) terminal in future evolution, and the like. It should be understood that the present application is not limited to the specific form of the terminal device.
The access network device in the embodiment of the present application may be a device having a wireless transceiving function in an access network, or the access network device may be configured in an access network device having a wireless transceiving function in an access network. The access network devices include, but are not limited to: a base station, an evolved node B (eNB), a Radio Network Controller (RNC), a home base station (e.g., home evolved node B or home node B, HNB), a baseband unit (BBU), a wireless relay node, a wireless backhaul node, a Transmission Point (TP), or a Transmission and Reception Point (TRP). The device may also be a network node forming a gNB or a transmission point, such as a baseband unit (BBU), or a Distributed Unit (DU), etc. It should be understood that the present application is not limited to the particular form of access network device.
When networking the pilot frequency, the operating frequency bands of the interfered access network device and the interfered access network device may be different, and the interfered access network device can only detect the interference intensity from the frequency band outside the operating frequency band and cannot receive the reference signal sent by the interfered access network device outside the operating frequency band, so that the interference detection mode by the interfered access network device is not suitable for reducing the CLI of the adjacent frequency.
The method and the device can communicate with the interference applying access network device through the terminal device served by the interfered cell (the interfered cell of the interference applying access network device), and the interference applying access network device measures the signal of the terminal device to determine the interference wave beam, thereby realizing reduction of CLI or elimination of CLI and improving the communication quality. The communication method provided by the embodiment of the application can be applied to interference elimination between access network devices of co-frequency networking and can also be applied to interference elimination between access network devices of pilot frequency networking. The CLI can be reduced or eliminated by adopting the same solution in the same system, the condition that different solutions are adopted for different scenes is avoided, and the complexity of system development is reduced.
The following describes a communication method provided in an embodiment of the present application with reference to the drawings.
Fig. 2 is a schematic flow chart of a communication method 200 provided in an embodiment of the present application. The first terminal device shown in fig. 2 is a terminal device serving a first access network apparatus, and a serving cell of the first terminal device is a first cell of the first access network apparatus. In the embodiment shown in fig. 2, the first access network device is a disturbed access network device, the first cell is a disturbed cell, the second access network device is an interfering access network device, and the second cell of the second access network device is an interfering cell.
It should be noted that the access network device shown in fig. 2 may be a device configured in the access network equipment, or the access network device may be the access network equipment. For example, the first access network device may be a device of the access network apparatus 102 configured in the system shown in fig. 1, or the first access network device may be the access network apparatus 102, the second access network device may be a device of the access network apparatus 101 configured in the system shown in fig. 1, or the second access network device may be the access network apparatus 102.
S201, a first terminal device sends first indication information to a first access network apparatus, where the first indication information is used to indicate at least one cell.
Accordingly, the first access network apparatus receives the first indication information from the first terminal device.
By way of example and not limitation, the first indication information may include identification information of the at least one cell.
The first terminal device may send the first indication information to the first access network apparatus after measuring signal qualities of N cells, where N is a positive integer, and the N cells are cells that may have CLI interference with the first cell. The N cells include the at least one cell indicated by the first indication information.
Optionally, before S201, the first access apparatus sends first configuration information to the first terminal device, where the first configuration information is used for measuring signal quality of the first terminal device at a first frequency point, and the first frequency point is a working frequency point of N cells. Or, the first configuration information is used for the first terminal device to measure the signal quality of the N cells.
The first access device may determine N cells that may have CLI interference with the first cell, instruct the first terminal device to measure the N cells through the first configuration information, or instruct the first terminal device to measure the N cells through a working frequency point that indicates the N cells.
In one example, the first configuration information is used for measuring signal quality of the first terminal device at the first frequency point. The number of the first frequency point may be one or more.
Optionally, the first configuration information may include indication information a, where the indication information a is used to indicate the first frequency point.
For example, the first configuration information includes indication information a, where the indication information a includes identification information of a first frequency point, and if the number of the first frequency point is one, the indication information a includes identification information of the one frequency point; if the first frequency point is a plurality of frequency points, the indication information a includes identification information of the plurality of frequency points. The first terminal device may determine, according to the first configuration information including the identification information of the first frequency point, N cells working at the first frequency point. The first terminal device may measure the reference signals of the N cells communicated at the first frequency point according to the first configuration information, to obtain the signal quality of the N cells, where N is a positive integer.
In another example, the first configuration information is used for the first terminal device to measure the signal quality of N cells.
Optionally, the first configuration information may include indication information B, which indicates the N cells.
For example, the first configuration information includes indication information B, where the indication information B includes identification information of each of the N cells, and the first terminal device determines the N cells according to the indication information B after receiving the first configuration information. And measuring the signal quality of the N cells according to the first configuration information.
By way of example and not limitation, the signal quality of a cell may include one or more of the following:
reference Signal Received Power (RSRP), reference Signal Received Quality (RSRQ), or signal to interference plus noise ratio (SINR).
Optionally, the first configuration information may include indication information C for indicating one or more signal qualities. And after the first terminal equipment receives the first configuration information, measuring the signal quality indicated by the indication information C.
For example, the indication information a indicates a frequency point 1 and a frequency point 2 (that is, the first frequency point includes a frequency point 1 and a frequency point 2), and the indication information C indicates RSRP, so that after receiving the first configuration information, the first terminal device may measure RSRP of reference signals of cells on the frequency point 1 and the frequency point 2.
For another example, the indication information B indicates the N cells, and the indication information C indicates RSRQ, so that the first terminal device may measure RSRQ of reference signals of the N cells after receiving the first configuration information.
In one embodiment, the N cells measured by the first terminal device include at least one cell indicated by the first indication information. The first terminal equipment determines the at least one cell in the N cells according to the signal quality of the N cells, wherein the at least one cell is an interference cell of the first cell. Wherein N is a positive integer. The at least one cell includes a second cell of a second access network device.
That is, in this embodiment, the first terminal device determines the interfering cell of the first cell according to the measured signal quality of the N cells, and notifies the first access network apparatus that the interfering cell of the first cell is the at least one cell through the first indication information.
The first terminal device may determine, according to the signal quality of the N cells and a first threshold, an interfering cell of a first cell in the N cells, if the signal quality of one or more cells in the N cells is greater than or equal to the first threshold, the first terminal device may determine that the one or more cells are the interfering cell of the first cell, and if the signal quality of one or more cells in the N cells is less than the first threshold, the first terminal device may determine that the one or more cells are not the interfering cell of the first cell.
In this embodiment, the signal quality of the at least one cell indicated by the first indication information is greater than or equal to a first threshold value.
Optionally, the first terminal device may send measurement report information to the first access network apparatus, the measurement report information including the first indication information. The first terminal device informs the first access network apparatus of the at least one interfering cell of the first cell through the first indication information. Optionally, the measurement report information may further include signal quality information indicating the signal quality of the at least one cell.
By way of example and not limitation, the first threshold value is preconfigured in the terminal device, or the terminal device is sent by the access network apparatus, for example, by adding the first threshold value to the first configuration information.
Optionally, the first configuration information may specifically be measurement reporting configuration information of an A4 event.
A mobile communication system (e.g., LTE, NR, etc.) defines multiple event-triggered measurement reporting modes, where the multiple times include an A4 event, where the A4 event is an event that the signal quality of a neighboring cell is greater than an A4 threshold. I.e., an example where the A4 threshold is the first threshold. The measurement reporting configuration information of the A4 event includes the A4 threshold.
For example, the first access network apparatus instructs the first terminal device to transmit the measurement report information when the A4 event occurs through the first configuration information. The first configuration information comprises indication information A, indication information C and an A4 threshold value, wherein the indication information A is used for indicating a neighbor cell on the first frequency point to be measured, and the indication information C indicates the RSRQ of the neighbor cell to be measured. The first terminal device measures RSRQ of neighboring cells on the first frequency point, and when RSRQ of one or more neighboring cells is greater than the A4 threshold, the first terminal device sends measurement configuration information to the first access network device, where the measurement configuration information includes first indication information indicating the one or more neighboring cells whose RSRQ is greater than the A4 threshold. Optionally, the measurement configuration information further includes signal quality information indicating RSRQ of the one or more neighbor cells. After receiving the first configuration information, the first access network apparatus may determine that the one or more neighboring cells are interfering cells of the first cell.
In another embodiment, the N cells measured by the first terminal device are the at least one cell indicated by the first indication information. The first terminal device measures the signal quality of the at least one cell, and sends measurement report information to the first access network device, wherein the measurement report information comprises the first indication information and signal quality information, the first indication information indicates the at least one cell, and the signal quality information is used for indicating the signal quality of the at least one cell. Determining, by the first access network device, a signal quality at the at least one cell, an interfering cell for the first cell.
Optionally, the first access device determines a second cell of the second access network device according to the signal quality of the at least one cell, where the signal quality of the second cell is greater than or equal to a first threshold. The second cell is an interfering cell with the first cell.
If the signal quality of the at least one cell including other cells (e.g., a third cell) is greater than or equal to the first threshold, the first access network device may determine that the third cell is also an interfering cell of the first cell.
The first access network apparatus may select the first terminal device to measure the interfering cell among terminal devices served by the first cell before transmitting the first configuration information.
Optionally, the first access network apparatus receives a reference signal from at least one terminal device in the first cell, where the at least one terminal device is a terminal device serving the first cell. And the first access network device determines the first terminal equipment from the at least one terminal equipment according to the reference signal of the at least one terminal equipment, wherein the signal quality of the reference signal of the first terminal equipment is greater than or equal to a second threshold value.
That is, the first access network apparatus determines, according to the signal quality of the reference signal of at least one terminal device, that the first terminal device whose signal quality is greater than or equal to the second threshold measures the reference signal of the neighboring cell, thereby determining the interfering cell.
As an example and not limitation, the reference signal of the at least one terminal device may be a Sounding Reference Signal (SRS).
That is to say, the first access network apparatus may select, according to the signal quality of the terminal device served by the first cell, the terminal device with better signal quality as the terminal device for measuring the interference of the neighboring cell. The terminal equipment with the signal quality larger than the second threshold value can be considered to be located near the center of the cell, so that the interference condition of most terminal equipment in the cell on the adjacent cell can be reflected, and the first access network device can accurately determine the interference cell.
As an example and not limitation, the second threshold value may be preconfigured in the access network device.
Optionally, the first access network apparatus may configure the first terminal device to periodically measure the signal quality of the N cells, so that the first access network apparatus may determine the interfering cell in time.
S202, the first access network device sends second indication information to the second access network device, where the second indication information is used to indicate the second access network device to perform interference measurement in the second cell according to the reference signal of the first terminal device.
Accordingly, the second access network device receives the second indication information from the first access network device, and performs interference measurement according to the reference signal of the first terminal device in the second cell according to the indication of the second indication information.
According to the scheme, the interfered access network device can obtain the indication of the terminal equipment and inform the interfering access network equipment to execute interference detection according to the signal of the terminal equipment served by the interfered cell. Therefore, the interference access network equipment measures the signal of the terminal equipment to determine an interference beam, thereby realizing the reduction of CLI or the elimination of CLI and improving the communication quality.
S203, the first terminal device sends a reference signal to the second access network apparatus.
Accordingly, the second access network apparatus receives the reference signal from the first terminal device.
Optionally, the second access network apparatus may send fifth indication information to the first terminal device, where the fifth indication information is used to indicate a reference signal resource of the second cell, and the reference signal resource is used to carry a reference signal.
The second access network apparatus may allocate a resource for sending a reference signal to the first terminal device, so that the first terminal device sends the reference signal on the reference signal resource, and the second access network apparatus may determine, according to the received reference signal, a beam of the second cell that generates interference to the first cell.
By way of example and not limitation, the reference signal may be an SRS.
The second access network device receives the reference signal from the first terminal device, may obtain channel information between the second access network device and the first terminal device according to the reference signal, and may determine a downlink interference beam of the second cell based on the channel information. For example, a downlink interference beam corresponding to the channel information may be determined based on channel reciprocity. But the application is not limited thereto. The channel reciprocity refers to that channel fading experienced by an uplink signal and a downlink signal between the second access network device and the first terminal device can be considered to be the same.
According to the scheme of the embodiment of the application, terminal equipment served by a disturbed cell (disturbed cell of a disturbed access network device) is communicated with disturbing access network equipment, and the disturbing access network equipment measures signals of the terminal equipment to determine an interference beam, so that the disturbing access network device can avoid interference of the interference beam, thereby reducing CLI or eliminating CLI and improving communication quality.
Alternatively, if the working carrier of the first cell is different from the working carrier of the second cell (i.e. when the carrier frequency of the first cell and the carrier frequency of the second cell are pilot frequency cells in pilot frequency networking), the second cell may be used as a member cell of Carrier Aggregation (CA) of the first terminal device to communicate with the first terminal device.
For example, as shown in fig. 3, a first cell of a first access network apparatus may be used as a primary cell for communication by a first terminal device CA, and a second cell of a second access network apparatus may be used as a secondary cell for communication by the first terminal device CA, that is, carriers of the primary cell and carriers of the secondary cell are two carriers in a carrier aggregation communication scheme of the first terminal device. The ratio of the downlink time unit to the uplink time unit corresponding to the first cell may be 2. But the application is not limited thereto.
Embodiments in which the second cell communicates with the first terminal device as a member cell of CA communication of the first terminal device may include, but are not limited to, the following first embodiment and second embodiment.
In the first embodiment, after the second access network device receives the second indication information of the first access network device, the second access network device adds the second cell as a CA member cell of the first terminal device.
After receiving the second indication information of the first access network device, the second access network device determines that interference measurement needs to be performed in the second cell according to the reference signal of the first terminal device of the first cell, and then the second access network device communicates with the first terminal device by taking the second cell as a member cell of the first terminal device.
The second indication information may include related information of the first terminal device and identification information of the second cell, for example, the related information may include identification information and/or capability information (capability information) of the first terminal device, and the like. The second access network device determines to perform measurement interference measurement in the second cell according to the identification information of the second cell, and determines to perform interference measurement in the second cell according to the reference signal of the first terminal device according to the identification information of the first terminal device.
The second access network apparatus may interact with the first terminal device according to the related information of the first terminal device, and add the second cell as a member cell of the first terminal device. For example, the second access network device receives a random access signal requesting access to the second cell from the first terminal device according to the related information of the first terminal device, establishes a communication link with the first terminal device, and records the second cell as a member cell of carrier aggregation of the first terminal device in a log after establishing the communication link. But the application is not limited thereto.
In a second embodiment, the second access network device receives fourth indication information from the first access network device, where the fourth indication information is used to instruct the second access network device to add the second cell as the member cell of the first terminal device.
The fourth indication information may be carried in the same message as the second indication information, or the fourth indication information may be carried in a different message from the second indication information.
For example, the fourth indication information may be carried in the same Xn interface message as the second indication information, where the Xn interface is a communication interface between access network devices, and the access network devices may communicate through the Xn interface. And after receiving the Xn interface message from the first access network device through the Xn interface, the second access network device determines to add the second cell as the member cell of the first terminal equipment according to the fourth indication information, and determines to execute interference measurement according to the reference signal of the first terminal equipment in the second cell according to the second indication information.
For another example, the first access network device may first send the fourth indication information to the second access network device through the Xn interface, the second access network device determines to add the second cell as a member cell of the first terminal device according to the fourth indication information, and the first access network device sends the second indication information to the second access network device through the Xn interface, and notifies the second access network device to perform interference measurement in the second cell according to the reference signal of the first terminal device.
Optionally, the first access network apparatus sends third indication information to the first terminal device, where the third indication information is used to indicate that the first terminal device adds the second cell as a member cell for CA communication of the first terminal device.
The first terminal device receives the third indication information from the first access network device, and adds the second cell as a member cell of the first terminal device. The third indication information may indicate related information of the second cell, for example, the related information of the second cell includes, but is not limited to, one or more of identification information of the second cell, carrier frequency or frequency bandwidth of communication of the second cell, and the first terminal device may interact with the second access network apparatus according to the related information of the second cell to add the second cell as a member cell. For example, the first terminal device adjusts the radio frequency link according to the related information, sends a random access signal to the second cell within the frequency bandwidth of the second cell to access the second cell, establishes a communication link with the second cell, and records the second cell as a member cell of carrier aggregation of the first terminal device in a log after establishing the communication link. But the application is not limited thereto.
And after adding the second cell as the member cell, the first terminal equipment sends the reference signal to the second cell.
Because the ratio of the uplink time unit to the downlink time unit of the first cell to the second cell is different, the first terminal equipment sends the reference signal in a carrier wave sending mode for mining. That is, the first terminal equipment transmits the reference signal in the uplink time unit of one member cell a, and another member cell B may be a downlink time unit in the time unit, the first terminal equipment does not transmit the reference signal in the member cell B, but waits for the uplink time unit of the member cell B to transmit the reference signal.
It should be understood that, unlike the member cell in the current CA communication, the member cell in the current carrier aggregation communication is a serving cell providing a communication service for the terminal device, and the embodiment of the present application proposes to use an interfering cell as the member cell of the terminal device, so that the terminal device can communicate with the interfering cell, and implement interference measurement to reduce or eliminate interference of the interfering cell on the serving cell. The interfering cell may also be referred to as an interfering component carrier for CA communication of the terminal device, and is used for interference measurement.
In the above two embodiments, in a scenario of inter-frequency networking, when a carrier frequency of a first cell is different from a carrier frequency of a second cell, the second cell may serve as a member cell of CA communication of a first terminal device to communicate with the first terminal device. In a same-frequency networking scenario, for example, a first cell and a second cell are two cells in the same-frequency networking scenario, and because the carrier frequency of the first cell is the same as the carrier frequency of the second cell, a first terminal device can communicate with the second cell without changing the carrier frequency, send a reference signal to a second access network device, and the second access network device can receive the reference signal of the first terminal device at the carrier frequency of the second cell, execute interference detection, and further implement interference avoidance.
And S204, the second access network device determines at least one downlink beam of the second cell according to the reference signal.
The second access network device may obtain channel information between the second access network device and the first terminal device according to the reference signal from the first terminal device, and map to obtain at least one downlink beam of the second cell. For example, the second access network device may regard the channel information as downlink channel information based on the channel reciprocity, and thus, based on the at least one downlink beam of the second cell corresponding to the channel information. The at least one downlink beam is a beam in the second cell that causes interference to the first cell.
S205, the second access network device does not transmit the signal using the at least one downlink beam in the uplink time unit of the first cell.
For example, as shown in fig. 4, in time units 1, 2, 3, 6, and 7, downlink resources of the second cell correspond to uplink resources of the first cell, and downlink signals of the second cell may interfere with uplink signals of the first cell. The second access network device may transmit signals in uplink time units (including special time units) of the first cells without using the at least one interfering downlink beam that interferes with the first cells. And interference avoidance is realized, interference can be reduced, and the uplink communication quality of the first cell is improved.
Optionally, in the uplink time unit of the first cell, if there is downlink data to be sent of the terminal device in the at least one downlink beam direction in the second cell. The second access network device may select a beam other than the at least one downlink beam, and transmit downlink data to the terminal device. Or postponing to send downlink data to the terminal device in a time unit in which the first cell and the second cell are both downlink.
For example, the first beam of the second cell is an interference beam of the first cell, and the second cell does not use the first beam to transmit signals in the uplink time unit of the first cell, so as to avoid interference of the first beam on the first cell. If the uplink time unit is in the uplink time unit, the second access network device has downlink data to be sent to the second terminal equipment in the second cell. And the service beam of the second terminal device is the first beam, the second access network apparatus may adjust the beam parameter of the first beam to obtain a second beam and then send downlink data to the second terminal device. Or the second access network device transmits downlink data to the second terminal equipment by adopting the wave beams except the at least one downlink wave beam. Or, the second access network apparatus defers sending downlink data to the second terminal device, for example, the second access network apparatus defers sending downlink data to the second terminal device in a time unit when both the second cell and the first cell are downlink.
According to the scheme of the embodiment of the application, the terminal equipment served by the disturbed cell (disturbed cell of disturbed access network equipment) is communicated with the disturbing access network equipment, and the disturbing access network equipment measures the signal of the terminal equipment to determine the disturbing beam, so that CLI is reduced or eliminated, and the communication quality is improved.
Optionally, after sending the second indication information, the first access network device may determine an interfered condition of the first uplink signal, and the first access network device may monitor, in the first cell, interference strength of the second cell, and when the interference strength is smaller than an interference threshold, the first access network device may determine that the second access network device completes interference beam detection of the second cell, and perform interference avoidance. If the second cell is added as a member cell of the CA communication of the first terminal device, the first access network apparatus may delete the second cell from the member cell of the CA communication of the first terminal device. The power consumption of the first terminal device can be reduced.
Optionally, the second access network apparatus determines the at least one downlink beam that generates interference to the first cell, and the second access network apparatus may send notification information to the first access network apparatus to notify the first access network apparatus that the interference beam has been determined.
Alternatively, if the second cell is added as a member cell of the CA communication of the first terminal device, the first access network apparatus may delete the second cell from the member cell of the CA communication of the first terminal device after receiving the notification information. The power consumption of the first terminal device can be reduced.
According to the scheme of the embodiment of the application, the terminal equipment served by the disturbed cell (disturbed cell of disturbed access network equipment) is communicated with the disturbing access network equipment, and the disturbing access network equipment measures the signal of the terminal equipment to determine the interference beam, so that CLI is reduced or eliminated, and the communication quality is improved. The communication method provided by the embodiment of the application can be applied to interference elimination between access network devices of co-frequency networking and can also be applied to interference elimination between access network devices of pilot frequency networking. The CLI can be reduced or eliminated by adopting the same solution in the same system, the condition that different solutions are adopted for different scenes is avoided, and the complexity of system development is reduced.
The method provided by the embodiment of the present application is described in detail above with reference to fig. 2 to 4. Hereinafter, the apparatus provided in the embodiment of the present application will be described in detail with reference to fig. 5 to 7. In order to implement the functions in the method provided by the embodiments of the present application, each network element may include a hardware structure and/or a software module, and implement the functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether any of the above-described functions is implemented as a hardware structure, a software module, or a hardware structure plus a software module depends upon the particular application and design constraints imposed on the technical solution.
Fig. 5 is a schematic block diagram of a communication device provided in an embodiment of the present application. As shown in fig. 5, the communication device 500 may include a transceiver unit 520.
In one possible design, the communication apparatus 500 may correspond to the terminal device in the above method embodiment, or a chip configured in (or used in) the terminal device, or other apparatus, module, circuit, or unit capable of implementing the method of the terminal device.
It should be understood that the communication apparatus 500 may correspond to a terminal device in the method 200 according to the embodiment of the present application, and the communication apparatus 500 may include a unit for executing the method executed by the terminal device in the method 200 in fig. 2. Also, the units in the communication apparatus 500 and the other operations and/or functions described above are respectively for implementing the corresponding flows of the method 200 in fig. 2.
Optionally, the communication device 500 may further include a processing unit 510, and the processing unit 510 may be configured to process instructions or data to implement corresponding operations.
It should also be understood that, when the communication apparatus 500 is a chip configured in (or used in) a terminal device, the transceiver unit 520 in the communication apparatus 500 may be an input/output interface or circuit of the chip, and the processing unit 510 in the communication apparatus 500 may be a processor in the chip.
Optionally, the communication apparatus 500 may further include a storage unit 530, where the storage unit 530 may be configured to store instructions or data, and the processing unit 510 may execute the instructions or data stored in the storage unit to enable the communication apparatus to implement corresponding operations.
It should be understood that the transceiving unit 520 in the communication apparatus 500 may be implemented by a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the transceiver 610 in the terminal device 600 shown in fig. 6. The processing unit 510 in the communication apparatus 500 may be implemented by at least one processor, for example, may correspond to the processor 620 in the terminal device 600 shown in fig. 6. The processing unit 510 in the communication device 500 may also be implemented by at least one logic circuit. The storage unit 530 in the communication apparatus 500 may correspond to a memory in the terminal device 600 shown in fig. 6.
It should also be understood that, the specific processes of the units for executing the corresponding steps described above have been described in detail in the above method embodiments, and are not described herein again for brevity.
In another possible design, the communication apparatus 500 may correspond to the access network apparatus in the above method embodiment, for example, or the communication apparatus 500 may be a chip configured in (or used in) an access network device, or other apparatus, module, circuit, or unit capable of implementing the method of the access network apparatus.
It should be understood that the communication device 500 may correspond to a first access network device in the method 200 according to the embodiment of the present application, the communication device 500 may include a first access network device for performing the method 200 in fig. 2, or the communication device 500 may correspond to a second access network device in the method 200 according to the embodiment of the present application, the communication device 500 may include a second access network device for performing the method 200 in fig. 2. Also, the units in the communication apparatus 500 and the other operations and/or functions described above are respectively for implementing the corresponding flows of the method 200 in fig. 2.
Optionally, the communication device 500 may further include a processing unit 510, and the processing unit 510 may be configured to process instructions or data to implement corresponding operations.
It should also be understood that, when the communication apparatus 500 is a chip configured in (or used in) an access network device, the transceiver unit 520 in the communication apparatus 500 may be an input/output interface or circuit of the chip, and the processing unit 510 in the communication apparatus 500 may be a processor in the chip.
Optionally, the communication apparatus 500 may further include a storage unit 530, where the storage unit 530 may be configured to store instructions or data, and the processing unit 510 may execute the instructions or data stored in the storage unit to enable the communication apparatus to implement corresponding operations.
It should be understood that the communication apparatus 500 is configured to access network equipment, and the transceiver unit 520 in the communication apparatus 500 may be implemented by a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the transceiver 710 in the access network equipment 700 shown in fig. 7. The processing unit 510 in the communication apparatus 500 may be implemented by at least one processor, for example, may correspond to the processor 720 in the access network device 700 shown in fig. 7, and the processing unit 510 in the communication apparatus 500 may be implemented by at least one logic circuit.
It should also be understood that, the specific processes of the units for executing the corresponding steps described above have been described in detail in the above method embodiments, and are not described herein again for brevity.
Fig. 6 is a schematic structural diagram of a terminal device 600 according to an embodiment of the present application. The terminal device 600 can be applied to the system shown in fig. 1, and performs the functions of the terminal device in the above method embodiment. As shown, the terminal device 600 includes a processor 620 and a transceiver 610. Optionally, the terminal device 600 further comprises a memory. The processor 620, the transceiver 610, and the memory may communicate with each other, and may transmit control and/or data signals, via the internal connection path. The memory is used for storing computer programs, and the processor 620 is used for executing the computer programs in the memory to control the transceiver 610 to transmit and receive signals.
The processor 620 may be combined with the memory to form a processing device, and the processor 620 may be configured to execute the program codes stored in the memory to implement the functions described above. In particular implementations, the memory may also be integrated with processor 620 or separate from processor 620. The processor 620 may correspond to the processing unit in fig. 5.
The transceiver 610 may correspond to the transceiver unit in fig. 5. The transceiver 610 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). The receiver is used for receiving signals, and the transmitter is used for transmitting signals.
It should be understood that the terminal device 600 shown in fig. 6 is capable of implementing the procedures involving the terminal device in the method embodiment shown in fig. 2. The operations and/or functions of the modules in the terminal device 600 are respectively for implementing the corresponding flows in the above method embodiments. Reference may be made specifically to the description of the above method embodiments, and a detailed description is appropriately omitted herein to avoid redundancy.
The processor 620 may be configured to perform the actions described in the foregoing method embodiments, which are implemented by the terminal device, and the transceiver 610 may be configured to perform the actions described in the foregoing method embodiments, which are transmitted to or received from the network device by the terminal device. Please refer to the description of the previous embodiment of the method, which is not repeated herein.
Optionally, the terminal device 600 may further include a power supply for supplying power to various devices or circuits in the terminal device.
In addition, in order to improve the functions of the terminal device, the terminal device 600 may further include input and output means, such as one or more of an input unit, a display unit, an audio circuit, a camera, a sensor, and the like, and the audio circuit may further include a speaker, a microphone, and the like.
Fig. 7 is a schematic structural diagram of an access network apparatus according to an embodiment of the present application, where the access network apparatus 700 may be applied to the system shown in fig. 1, and performs the functions of an access network device (e.g., a first access network device or a second access network device) in the foregoing method embodiment.
It should be understood that the access network apparatus 700 shown in fig. 7 is capable of implementing various processes of the first access network device or the second access network device involved in the method embodiment shown in fig. 2. The operations and/or functions of the modules in the network device 700 are respectively for implementing the corresponding flows in the above method embodiments. Reference may be made specifically to the description of the above method embodiments, and a detailed description is omitted here where appropriate to avoid repetition.
It should be understood that the access network device 700 shown in fig. 7 may be an eNB or a gNB, and optionally, the network device includes a Central Unit (CU), a Distributed Unit (DU), a network device of an Active Antenna Unit (AAU), and the like. The present application is not limited to the specific architecture of the network device.
The embodiment of the application also provides a processing device, which comprises a processor and a (communication) interface; the processor is configured to perform the method of any of the method embodiments described above.
It should be understood that the processing means described above may be one or more chips. For example, the processing device may be a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD), or other integrated chips.
According to the method provided by the embodiment of the present application, the present application further provides a computer program product, which includes: computer program code which, when executed by one or more processors, causes an apparatus comprising the processor to perform the method of the embodiment shown in figure 2.
The technical solutions provided in the embodiments of the present application may be wholly or partially implemented by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, special purpose computer, computer network, network appliance, terminal appliance, core network appliance, machine learning appliance, or other programmable apparatus. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disc (DVD)), or a semiconductor medium, among others.
There is also provided a computer readable storage medium storing program code which, when executed by one or more processors, causes an apparatus including the processors to perform the method in the embodiment shown in fig. 2.
According to the method provided by the embodiment of the present application, the present application further provides a system, which includes at least one of the foregoing first access network devices and at least one of the foregoing second access devices.
Optionally, the system may further include one or more of the terminal devices described above.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
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 position, 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.
The above description is only for the specific embodiments of the present application, but the scope of the present application 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 application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (18)

1. An interference detection method, comprising:
a first access network device receives first indication information from a first terminal device, where the first indication information is used to indicate at least one cell, where a serving cell of the first terminal device is a first cell, and the first cell is a cell of the first access network device;
the first access network device sends second indication information to a second access network device, where the second indication information is used to indicate the second access network device to perform interference measurement in a second cell according to the reference signal of the first terminal device, where the at least one cell includes the second cell, and the second cell is a cell of the second access network device.
2. The method of claim 1, further comprising:
the first access network device sends first configuration information to the first terminal equipment, where the first configuration information is used for the first terminal equipment to measure signal quality of multiple cells, where the multiple cells include the at least one cell.
3. The method of claim 1 or 2, wherein the first access network device receives the first indication information from the first terminal equipment, and comprises:
the first access network apparatus receiving measurement report information from the first terminal device, the measurement report information including the first indication information and signal quality information indicating signal quality of the at least one cell,
and, the method further comprises:
and the first access network device determines the second cell according to the signal quality of the at least one cell, wherein the signal quality of the second cell is greater than or equal to a first threshold value.
4. The method according to any one of claims 1 to 3, further comprising:
the first access network apparatus receiving a reference signal from at least one terminal device at the first cell;
and the first access network device determines the first terminal equipment from the at least one terminal equipment according to the reference signal of the at least one terminal equipment, wherein the signal quality of the reference signal of the first terminal equipment is greater than or equal to a second threshold value.
5. The method of any of claims 1-4, wherein the second cell has a different operating carrier than the first cell, the method further comprising:
the first access network device sends third indication information to the first terminal equipment, where the third indication information is used to indicate that the first terminal equipment adds the second cell as a member cell of carrier aggregation communication of the first terminal equipment, and/or,
and the first access network device sends fourth indication information to the second access network device, where the fourth indication information is used to indicate the second access network device to add the second cell as a member cell of the carrier aggregation communication of the first terminal equipment.
6. An interference detection method, comprising:
a second access network device receives second indication information from a first access network device, where the second indication information is used to indicate the second access network device to perform interference measurement in a second cell according to a reference signal of a first terminal device, where a serving cell of the first terminal device is a first cell, and the first cell is a cell of the first access network device;
the second access network device receiving the reference signal from the first terminal equipment;
the second access network device determines at least one downlink beam of the second cell according to the reference signal;
the second access network device does not use the at least one downlink beam to send signals in an uplink time unit of the first cell, and the uplink time unit is a time unit for transmitting uplink signals in the first cell.
7. The method of claim 6, further comprising:
and the second access network device receives fourth indication information sent by the first access network device, wherein the fourth indication information is used for indicating the second access network device to add the second cell as a member cell of the carrier aggregation communication of the first terminal equipment.
8. The method according to claim 6 or 7, further comprising:
the second access network device sends fifth indication information to the first terminal equipment, wherein the fifth indication information is used for indicating reference signal resources of a second cell, and the reference signal resources are used for bearing the reference signals;
the second access network apparatus receiving the reference signal from the first terminal device, including:
the second access network apparatus receives the reference signal from the first terminal device on the reference signal resource.
9. A communications apparatus, comprising:
a transceiver unit, configured to receive first indication information from a first terminal device, where the first indication information is used to indicate at least one cell, where a serving cell of the first terminal device is a first cell, and the first cell is a cell of a first access network apparatus;
a processing unit, configured to determine the at least one cell according to the first indication information;
the transceiver unit is further configured to send second indication information to a second access network apparatus, where the second indication information is used to indicate the second access network apparatus to perform interference measurement in a second cell according to the reference signal of the first terminal device, where the at least one cell includes the second cell, and the second cell is a cell of the second access network apparatus.
10. The apparatus of claim 9,
the transceiver unit is specifically configured to receive measurement report information from the first terminal device, where the measurement report information includes the first indication information and signal quality information, and the signal quality information is used to indicate signal quality of the at least one cell,
the processing unit is further configured to determine the second cell according to the signal quality of the at least one cell, where the signal quality of the second cell is greater than or equal to a first threshold value.
11. The apparatus of claim 10,
the transceiver unit is further configured to send first configuration information to the first terminal device, where the first configuration information is used for the first terminal device to measure signal quality of multiple cells, where the multiple cells include the at least one cell.
12. The apparatus according to any one of claims 9 to 11,
the transceiver component is further configured to receive the reference signal from at least one terminal device in the first cell;
the processing unit is further configured to determine the first terminal device from the at least one terminal device according to the reference signal of the at least one terminal device, where a signal quality of the reference signal of the first terminal device is greater than or equal to a second threshold value.
13. The apparatus according to any of claims 9-12, wherein the second cell's operating carrier is different from the first cell's operating carrier,
the transceiver unit is further configured to send third indication information to the first terminal device, where the third indication information is used to indicate that the first terminal device adds the second cell as a member cell of carrier aggregation communication of the first terminal device, and/or,
the transceiver unit is further configured to send fourth indication information to the second access network apparatus, where the fourth indication information is used to indicate the second access network apparatus to add the second cell as a member cell of the carrier aggregation communication of the first terminal device.
14. A communications apparatus, comprising:
a transceiver unit, configured to receive second indication information from a first access network apparatus, where the second indication information is used to indicate a second access network apparatus to perform interference measurement in a second cell according to a reference signal of a first terminal device, where a serving cell of the first terminal device is a first cell, and the first cell is a cell of the first access network apparatus;
the transceiver unit is further configured to receive the reference signal from the first terminal device;
a processing unit, configured to determine at least one downlink beam of the second cell according to the reference signal;
the processing unit is further configured to transmit a signal without using the at least one downlink beam in an uplink time unit of the first cell, where the uplink time unit is a time unit for transmitting an uplink signal in the first cell.
15. The apparatus of claim 14,
the transceiver unit is further configured to receive fourth indication information sent by the first access network apparatus, where the fourth indication information is used to indicate that the second cell is added as a member cell of the carrier aggregation communication of the first terminal device.
16. The apparatus of claim 14 or 15,
the transceiver unit is further configured to send fifth indication information to the first terminal device, where the fifth indication information is used to indicate a reference signal resource of a second cell, and the reference signal resource is used to carry the reference signal;
the transceiver unit is specifically configured to receive the reference signal from the first terminal device on the reference signal resource.
17. A computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1 to 5, or the method of any of claims 6 to 8.
18. A chip comprising at least one processor and a communication interface;
the communication interface is used for receiving signals input into the chip or signals output from the chip, and the processor is communicated with the communication interface and realizes the method according to any one of claims 1 to 5 or the method according to any one of claims 6 to 8 through logic circuits or execution code instructions.
CN202111064567.1A 2021-09-10 2021-09-10 Interference detection method and communication device in wireless communication Pending CN115802371A (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111064567.1A CN115802371A (en) 2021-09-10 2021-09-10 Interference detection method and communication device in wireless communication

Publications (1)

Publication Number Publication Date
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