CN110545164B

CN110545164B - Method and apparatus for interference indication in a communication system

Info

Publication number: CN110545164B
Application number: CN201810525022.8A
Authority: CN
Inventors: 谢信乾; 郭志恒; 费永强; 毕文平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-05-28
Filing date: 2018-05-28
Publication date: 2022-09-02
Anticipated expiration: 2038-05-28
Also published as: CN110545164A; WO2019228076A1

Abstract

The application provides a method and a device for indicating interference. The method comprises the following steps: the communication equipment receives first indication information; and the communication equipment determines that the DMRS of the interference signal is related to a serving cell and/or the DMRS of the interference signal is related to a non-serving cell or a non-serving cell group according to the first indication information. By the provided embodiment, the receiving end can determine the appropriate interference DMRS sequence scrambling parameter according to the first indication information, and further determine the accurate interference DMRS sequence, so that the interference channel can be estimated according to the accurate interference DMRS sequence, and the advanced receiver can perform interference deletion or interference suppression.

Description

Method and apparatus for interference indication in a communication system

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for interference coordination.

Background

In a wireless communication network, for example, in a New radio interface (NR), Orthogonal Frequency Division Multiple Access (OFDMA) is generally adopted as a multiple Access method. The OFDMA is mainly characterized in that transmission resources are divided into orthogonal time-frequency Resource Elements (REs), signals sent by a sending end are all carried on the REs and transmitted to a receiving end, and the different REs are orthogonal to each other, so that the receiving end can independently receive the signals sent by each RE. In consideration of the fading characteristics of the wireless channel, the signal carried on the RE will be distorted after passing through the channel, and the channel distortion is generally referred to as channel coefficient. In order to recover a signal at a receiving end, it is necessary to estimate a channel coefficient, and in the prior art, a scheme based on a reference signal is usually adopted, that is, a transmitting end transmits a known signal on a specific RE, a receiving end estimates a channel coefficient according to the received signal and the known signal, interpolates the channel coefficient according to the channel coefficient obtained by estimation to obtain channel coefficients on other REs, and then receives and demodulates a data signal by using the channel coefficient obtained by estimation.

The transmitting end and the receiving end may be equipped with Multiple antennas to implement spatial multiplexing transmission by using a Multiple Input Multiple Output (MIMO) technology, that is, Multiple data streams are transmitted on the same time-frequency resource, each data stream is transmitted on an independent spatial layer, and each spatial layer is mapped to a different antenna port to be transmitted, so as to improve the use efficiency of the time-frequency resource. Considering that channel coefficients from different antenna ports to a receiving end may be different, in order for the receiving end to obtain information transmitted on multiple spatial layers, it is necessary to estimate a channel coefficient between each antenna port and the receiving end, so that it is necessary to configure a different Demodulation Reference Signal (DMRS) for each antenna port, and DMRSs corresponding to different antenna ports may be multiplexed by using time division, frequency division, code division, and the like.

Conventional wireless communication systems generally have two common duplexing modes: frequency Division Duplex (FDD) and Time Division Duplex (TDD). In the FDD duplex scheme, uplink and downlink communication are performed in different frequency bands, so that no cross interference exists between the uplink and downlink communication. In the TDD duplex scheme, uplink and downlink communications are performed on the same frequency band but on different timeslots, and the uplink and downlink ratio is generally the same between adjacent cells, so that there is no cross interference between uplink and downlink. In the two duplex modes, local cell interference in a cell is generally generated, and taking fig. 1A as an example, a base station simultaneously transmits downlink data to two terminals on the same frequency domain resource, so that a signal transmitted by the base station to one terminal appears to another terminal as local cell interference in the cell.

In order to more flexibly adapt to uplink and downlink services and improve the throughput of a system, a dynamic TDD (time division duplex), flexible duplex or even full duplex technology is introduced in the evolution process of a wireless communication network. In the dynamic TDD system, uplink and downlink ratios between different cells may be different, and transmission directions of data between adjacent cells are different, which may cause cross interference between uplink and downlink (as shown in fig. 1B), that is, interference between a base station and a terminal, and interference between terminals. Because the transmitting power of the base stations is generally larger, and the height of the base stations is higher, the probability that the signals are transmitted in line-of-sight between the base stations is higher, and therefore the interference between the base stations is larger. Furthermore, two terminals at the edge of adjacent cells may be in close proximity, in which case the interference between the terminals is large.

In view of the above interference, how to make the receiving end correctly acquire the interference signal, so as to further extract the useful signal becomes an urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a method and a device for wireless communication.

The embodiment of the application provides a method and a device used in wireless communication. A communication device (such as a network device or a terminal) at a transmitting end transmits information containing first indication information, a communication device (such as a terminal or a network device) at a receiving end receives the information containing the first indication information, and the receiving end determines that a demodulation reference signal (DMRS) of an interference signal is related to a serving cell according to the first indication information; or determining that a demodulation reference signal (DMRS) of the interference signal is related to a non-serving cell or a non-serving cell group according to the first indication information; or determining that the DMRS of the interference signal is related to the serving cell according to the first indication information, and the DMRS of the interference signal is also related to a non-serving cell or a non-serving cell group.

In one design, the communication device at the receiving end determines that the scrambling parameter of the DMRS sequence of the interfering signal is related to a serving cell identifier ID according to the first indication information; or the scrambling parameter for determining the DMRS sequence of the interference signal according to the first indication information is determined based on a serving cell Identifier (ID).

In one design, the communication device at the receiving end determines that the scrambling parameter of the DMRS sequence of the interfering signal is related to a non-serving cell ID or a non-serving cell group ID according to the first indication information; or the scrambling parameter for determining the DMRS sequence of the interference signal according to the first indication information is determined based on a non-serving cell ID or a non-serving cell group ID.

In one design, the communication device at the receiving end determines, according to the first indication information, that the scrambling parameter of the DMRS sequence of the interfering signal is related to a serving cell identifier ID, and the scrambling parameter of the DMRS sequence of the interfering signal is also related to a non-serving cell ID or a non-serving cell group ID; or the scrambling parameter of the DMRS sequence of the interference signal is determined based on the serving cell identifier ID according to the first indication information, and the scrambling parameter of the DMRS sequence of the interference signal is also determined based on the non-serving cell ID or the non-serving cell group ID.

The first indication information is included in Downlink Control Information (DCI), Uplink Control Information (UCI), Sidelink Control Information (SCI), or Network Control Information (NCI).

In one design, the first indication information may indicate information related to a source of the interference signal. The sources of the interference signal are, for example: serving cell, non-serving cell, group of non-serving cells, serving cell and non-serving cell, group of serving cell and non-serving cell, network, terminal, serving cell network, serving cell terminal, non-serving cell network, or non-serving cell terminal, etc. Optionally, a corresponding relationship between the first indication information and the information related to the interference signal source may be configured. Optionally, the correspondence is a correspondence between parameters such as an index, a number, and an identifier and the related information of the interference signal source. Optionally, the terminal or the network device determines a scrambling parameter of the DMRS sequence of the interfering signal according to the correspondence and the first indication information.

In another design, the first indication information may indicate information related to an interference type of the interfering signal. Optionally, the interference type of the interference signal is serving cell interference, non-serving cell group interference, serving cell and non-serving cell group interference, network interference, terminal interference, serving cell network interference, serving cell terminal interference, non-serving cell network interference, or non-serving cell terminal interference. Optionally, a corresponding relationship between the first indication information and the information related to the interference type of the interference signal may be configured. Optionally, the correspondence is a correspondence between parameters such as an index, a number, and an identifier and the related information of the interference type of the interference signal. Optionally, the communication device at the receiving end determines the scrambling parameter of the DMRS sequence of the interference signal according to the correspondence and the first indication information.

Optionally, the first indication information further indicates a power ratio of the data of the interfering signal to the DMRS of the interfering signal. Optionally, the power ratio is any one of {0dB, 3dB, 4.77dB }. Alternatively, a correspondence relationship between the first indication information and "the power ratio of the data of the interfering signal to the DMRS of the interfering signal" may be configured. Optionally, the communication device at the receiving end determines, according to the first indication information, a power ratio of the data of the interference signal to the DMRS of the interference signal.

Optionally, the first indication information further indicates a port of the DMRS of the interfering signal and/or a code division multiplexing, CDM, group of the DMRS of the interfering signal. Alternatively, a correspondence relationship between the first indication information and "a port of the DMRS of the interfering signal and/or a code division multiplexing, CDM, group of the DMRS of the interfering signal" may be configured. Optionally, the communication device at the receiving end determines, according to the first indication information, a port of the DMRS of the interfering signal and/or a code division multiplexing, CDM, group of the DMRS of the interfering signal.

Optionally, the first indication information further indicates a modulation scheme of data of the interference signal. Optionally, the modulation scheme is any one of { Quadrature Phase Shift Keying (QPSK),16 Quadrature Amplitude Modulation (QAM),64QAM,256QAM }. Alternatively, the correspondence relationship between the first indication information and the "modulation scheme of the data of the interference signal" may be configured. Optionally, the communication device at the receiving end determines a modulation method of the data of the interference signal according to the first indication information.

The method and the device can reduce the overhead of the indication information when the indication information is needed to simultaneously indicate the port of the DMRS of the interference signal, the Code Division Multiplexing (CDM) group of the DMRS of the interference signal, the modulation mode of the data of the interference signal or the power ratio of the data of the interference signal to the DMRS of the interference signal.

Optionally, the communication device of the transmitting end sends the second indication information. And the communication device of the receiving end receives the second indication information and determines the non-service cell ID or the non-service cell group ID according to the second indication information.

Optionally, the communication device at the receiving end receives a measurement signal, and determines the non-serving cell ID or non-serving cell group ID according to the measurement signal, where the measurement signal is a synchronization signal, a synchronization signal block, or a channel state information reference signal CSI-RS.

Optionally, the communication device at the transmitting end sends third indication information. And the communication device of the receiving end receives the third indication information and determines the corresponding relation between the measurement signal and the non-service cell ID or the non-service cell group ID according to the third indication information. Optionally, the terminal or the network device determines the non-serving cell ID or the non-serving cell group ID according to the corresponding relationship and the received measurement signal.

Optionally, the communication device at the transmitting end sends fourth indication information. And the communication device at the receiving end receives the fourth indication information and determines the corresponding relation between the first indication information and the interference signal source or the interference type related information according to the fourth indication information. Optionally, the fourth indication information is scheduling information or control information included in DCI.

According to the embodiment of the application, the problem that the interference deletion or interference suppression cannot be performed by adopting an advanced receiver due to the fact that the receiving end cannot determine the scrambling parameters of the DMRS sequences of the interference signals under the scene that the cell interference and the adjacent cell interference coexist or alternatively coexist is solved by enabling the receiving end to obtain the accurate scrambling parameters of the DMRS sequences of the interference signals or the interference types of the interference signals.

In one design, the present application provides a communication device that can implement the corresponding functions of the communication device at the transmitting end and/or the communication device at the receiving end. The communication device comprises corresponding means or components for performing the above method. The communication device comprises units that can be implemented by software and/or hardware. The communication device may be, for example, a terminal, or a network device (e.g., a base station), or a chip, a chip system, a processor, etc. that can support the terminal or the network device to implement the above functions.

In another design, the present application provides a communication device comprising: a processor and a memory for storing a program that, when executed by the processor, causes a communication device to implement the above-described method.

In still another design, the present application provides a communication device, which includes a processing unit and a transceiver unit, where the transceiver unit is configured to send or receive indication information indicating the correspondence described in the foregoing aspect, and the processing unit is configured to obtain corresponding information according to the indication information. Optionally, a storage unit may be further included, where the storage unit is configured to store the correspondence described in the foregoing method.

An embodiment of the present application further provides a storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the method described in any one of the above.

An embodiment of the present application further provides a chip system, including: a processor for supporting a communication device to implement the method described in any of the above.

The embodiment of the present application further provides a communication system, which includes the communication device of the transmitting end and the communication device of the receiving end.

Drawings

Fig. 1A is a schematic diagram of interference in a local cell;

fig. 1B is a diagram illustrating neighboring cell interference;

fig. 1C is a schematic diagram of a communication system to which the method for assisting interference cancellation provided in the present application is applied;

FIG. 1D illustrates an exemplary architecture of a communication system;

fig. 2 is a schematic flowchart of a method for assisting interference cancellation according to the present application;

fig. 3A is a schematic diagram illustrating a first method for bearing first indication information;

fig. 3B is a schematic diagram illustrating a second method for carrying first indication information;

fig. 3C is a schematic diagram illustrating a third method for carrying first indication information;

fig. 3D is a diagram illustrating a fourth method for carrying first indication information;

fig. 4 is a schematic flowchart of determining a scrambling parameter of an interfering DMRS sequence according to the present application;

fig. 5 is a schematic flow chart of another method for determining a scrambling parameter of an interfering DMRS sequence according to the present application;

fig. 6 is a schematic diagram of DMRS ports and DMRS CDM groups;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 9 is a schematic diagram of a communication device according to an embodiment of the present application.

Detailed Description

The interference indication method and the device provided by the embodiment of the invention can be applied to a communication system. Fig. 1C shows a schematic diagram of a communication system. The communication system includes one or more network devices (network device 10 and network device 20 are shown for clarity) and one or more terminal devices in communication with the one or more network devices.

Terminal devices

11 and 12 are shown connected to network device 10, and terminal devices 21 and 22 are shown connected to network device 20.

The technology described in the embodiment of the invention can be used for various communication systems, such as 2G, 3G, 4G, 4.5G and 5G communication systems, a system with a plurality of communication systems being fused, or a future evolution network. Such as Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Multiple Access (TDMA), frequency division multiple access (frequency division multiple access, FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), single carrier frequency division multiple access (SC-FDMA), Long Term Evolution (LTE) systems, new air interface (NR) systems, wireless fidelity (WiFi) systems, world wide microwave access (world interoperability for microwave access) systems, and third generation partnership project (3rd partner, 3GPP) related communication systems, among others.

Fig. 1D is an exemplary architecture diagram of a communication system, in which a network device in a radio access network RAN shown in fig. 1D is a base station (e.g., a gNB) of a CU and DU separation architecture. The RAN may be connected to a core network (e.g., LTE core network, 5G core network, etc.). CU and DU can be understood as the division of the base stations from a logical functional point of view. CUs and DUs may be physically separate or deployed together. The functions of the RAN terminate on the CUs. A plurality of DUs may share one. A DU may also connect multiple CUs (not shown). The CU and DU may be connected via an interface, such as an F1 interface. CUs and DUs may be partitioned according to protocol layers of the wireless network. For example, functions of a Packet Data Convergence Protocol (PDCP) layer and a Radio Resource Control (RRC) layer are provided in the CU, and functions of a Radio Link Control (RLC), a Media Access Control (MAC) layer, a physical (physical) layer, and the like are provided in the DU. It is to be understood that the division of CU and DU processing functions according to such protocol layers is merely an example, and may be performed in other manners. For example, a CU or DU may be partitioned to have more protocol layer functionality. For example, a CU or DU may also be divided into partial processing functions with protocol layers. In one design, some of the functions of the RLC layer and the functions of the protocol layers above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are set in the DU. In another design, the functions of a CU or DU may also be divided according to traffic type or other system requirements. For example, dividing by time delay, setting the function that processing time needs to meet the time delay requirement in DU, and setting the function that does not need to meet the time delay requirement in CU. The network architecture shown in fig. 2 may be applied to a 5G communication system, which may also share one or more components or resources with an LTE system. In another design, a CU may also have one or more functions of the core network. One or more CUs may be centrally located or separately located. For example, the CUs may be located on the network side to facilitate centralized management. The DU may have multiple rf functions, or may have a remote rf function.

The CU functions may be implemented by one entity, or the Control Plane (CP) and the User Plane (UP) may be further separated, that is, the control plane (CU-CP) and the user plane (CU-UP) of the CU may be implemented by different functional entities, and the CU-CP and the CU-UP may be coupled with the DU to jointly perform the functions of the base station.

In this application, the network device may be any device having a wireless transceiving function. Including but not limited to: a base station (BTS) in a Global System for Mobile (GSM) or CDMA, a base station (NodeB) in WCDMA, an evolved Node B (NodeB or eNB or e-NodeB) in LTE, a base station (gbnodeb or gNB) or a transmission point (TRP) in NR, a base station of a subsequent evolution of 3GPP, an access Node in a WiFi System, a wireless relay Node, a wireless backhaul Node, and the like. The base station may be: macro base stations, micro base stations, pico base stations, small stations, relay stations, balloon stations, and the like. Multiple base stations may support the same technology network as mentioned above, or different technologies networks as mentioned above. A base station may contain one or more Transmission Receiving Points (TRPs) that are co-sited or non-co-sited. The network device may also be a wireless controller, a Centralized Unit (CU), and/or a Distributed Unit (DU) in a Cloud Radio Access Network (CRAN) scenario. The network device may also be a server, a wearable device, or a vehicle mounted device, etc. The following description will take a network device as an example of a base station. The multiple network devices may be base stations of the same type or different types. The base station may communicate with the terminal device, and may also communicate with the terminal device through the relay station. The terminal device may communicate with a plurality of base stations of different technologies, for example, the terminal device may communicate with a base station supporting an LTE network, may communicate with a base station supporting a 5G network, and may support dual connectivity with the base station of the LTE network and the base station of the 5G network.

The terminal is a device with a wireless transceiving function, can be deployed on land, and comprises an indoor or outdoor terminal, a handheld terminal, a wearable terminal or a vehicle-mounted terminal; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a vehicle-mounted terminal device, a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a wearable terminal device, and so on. The embodiments of the present application do not limit the application scenarios. A terminal may also be referred to as a terminal device, User Equipment (UE), access terminal device, in-vehicle terminal, industrial control terminal, UE unit, UE station, mobile station, remote terminal device, mobile device, UE terminal device, wireless communication device, UE agent, or UE device, among others. The terminals may also be fixed or mobile.

When performing interference cancellation or interference suppression at a receiving end based on an advanced receiver, the receiving end needs to know a Demodulation Reference Signal (DMRS) sequence of an interference Signal, estimate a channel of the interference Signal based on the sequence, and perform joint Demodulation based on the channel of a useful Signal (the channel of the useful Signal estimated based on the DMRS sequence of the useful Signal) and the channel of the interference Signal to recover the useful Signal. The DMRS sequences of the interfering signal and the DMRS sequences of the useful signal are typically scrambled using a scrambling parameter. Under the scene that only the intra-cell interference exists, the scrambling parameter of the DMRS sequence of the interference signal is the same as that of the DMRS sequence of the useful signal (for example, the cell identifier ID is used as the scrambling parameter), so that the receiving end can determine the scrambling parameter of the DMRS sequence of the interference signal under the condition that the scrambling parameter of the DMRS sequence of the useful signal is known, and further determine the DMRS sequence of the interference signal to carry out interference channel estimation.

The above scrambling of the DMRS sequences is generally accomplished by introducing corresponding scrambling parameters when the DMRS sequences are initialized. For example, in one possible way of initializing DMRS sequences, c satisfying equation 1 may be employed _init Initializing a DMRS sequence, wherein

For initializing scrambling parameters of DMRS sequence, and

the cell ID may be a cell ID, which is generally the own cell ID or the serving cell ID. Of course, the formula 1 also includes other parameters, such as the symbol mark in the slot,

Is identified for a slot in a radio frame.

After introducing dynamic TDD, flexible duplex, or even full duplex technology, the cross interference of neighboring cells becomes severe, and an interference scenario in which interference of the local cell and interference of the neighboring cells coexist or alternatively coexist may occur, so it is desirable that the advanced receiver can suppress interference of neighboring cells or interference of non-serving cells while suppressing interference of the local cell or interference of serving cells. At this time, the receiving end still needs to estimate the interference channel according to the DMRS sequence of the interference signal. However, considering that the interference signals in the above interference scenario may come from different cells (i.e. the own cell or the neighboring cell) at different times or come from different cells at the same time, and because the scrambling parameters adopted by the DMRS sequences in different cells are generally not the same (for example, the DMRS sequence of the useful signal uses the ID of the own cell as the scrambling parameter and the DMRS sequence of the interference signal uses the ID of the neighboring cell as the scrambling parameter), the receiving end cannot identify whether the interference signal is the own cell interference or the neighboring cell interference, and therefore, the receiving end cannot determine the scrambling parameter of the scrambling sequence of the interference signal in the scenario where the own cell interference and the neighboring cell interference coexist or alternatively coexist, and cannot perform interference cancellation or interference suppression using an advanced receiver, thereby affecting the system performance.

The method and the device for indicating the interference provided by the embodiment of the invention solve the problem that the receiving end cannot determine the scrambling parameter of the DMRS sequence of the interference signal under the scene that the cell interference and the adjacent cell interference coexist or alternately coexist, so that the advanced receiver cannot be adopted for interference deletion or interference suppression by enabling the receiving end to obtain the accurate scrambling parameter of the DMRS sequence of the interference signal or the interference type of the interference signal.

The technical solution of the present application is described in detail below with reference to specific embodiments and accompanying drawings. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. It will be appreciated that the functions explained herein may be implemented by means of individual hardware circuits, by means of software running in conjunction with a processor/microprocessor or general purpose computer, by means of an application specific integrated circuit, and/or by means of one or more digital signal processors. When described as a method, the present application may also be implemented in a computer processor and a memory coupled to the processor.

In the present application, the "DMRS for an interfering signal" is also sometimes referred to as an "interfering DMRS". The "data of an interfering signal" is sometimes also referred to as an "interfering data signal" or an "interfering signal", and does not affect understanding of its technical meaning.

Fig. 2 is a flowchart of a method provided in an embodiment of the present application. As shown in fig. 2, the method of this embodiment may include:

200, the communication device receives first indication information;

a part 210, wherein the communication equipment determines interference DMRS sequence scrambling parameters according to the first indication information;

220 part, the communication equipment determines interference DMRS sequence scrambling parameters and power ratios of interference data signals and interference DMRS according to the first indication information;

and a part 230, wherein the communication equipment determines the power ratio of the interference data signal and the interference DMRS according to the first indication information.

It should be noted that, the 210 part, the 220 part and the 230 part are in parallel, that is, when the method of the present application is implemented, one of the 210 part, the 220 part or the 230 part can be implemented. Various embodiments of the present application are described in detail below.

In this embodiment, the communication device may be a terminal or a network device. Taking the communication device as a terminal, as shown in fig. 3A, in section 200, the first indication Information may be carried by Downlink Control Information (DCI) sent by a network device; as shown in fig. 3B, the first indication Information may also be carried by side link Control Information (SCI) sent by other terminals, where the SCI may also be understood as Control Information in terminal-to-Device (D2D) communication. Taking the communication device as a network device as an example, as shown in fig. 3C, the first indication Information may be carried by Uplink Control Information (UCI) sent by the terminal; as shown in fig. 3D, the first indication Information may also be carried by Network Control Information (NCI) sent by the Network device, where the NCI may be Information transmitted through a wired interface (e.g., an X2 interface or an interface similar to X2) between the Network devices, or Information wirelessly transmitted through an air interface between the Network devices.

In part 210, the communications device determines an interfering DMRS sequence scrambling parameter based on the first indication information.

In part 210, in one possible implementation, the communication device may determine an interference type according to the first indication information, where the interference type includes local cell interference and neighboring cell interference, and the communication device determines, according to the interference type, an identifier ID or a signal corresponding to the interference DMRS sequence scrambling parameter. Wherein, the ID may be a cell ID, a cell group ID, a UE group ID, a super cell (supercell) ID, a super cell group ID, a carrier group ID, or the like. The super cell may comprise a plurality of cells or a plurality of cell groups. The cell ID is used to identify a cell (acell). The cell group ID is used to identify a cell group (acell group), which may include one or more cells. The UE ID is used to identify a UE (a UE). The UE group ID is used to identify a UE group (a UE group), which may include one or more UEs. The super cell ID is used to identify a super cell (a supercell). The supercell group ID is used to identify a supercell group (a supercell group), which may include one or more supercells. The carrier ID is used to identify a carrier (a carrier). The carrier group ID is used to identify a carrier group (a carrier group), which may include one or more carriers. The cell ID may also be a local cell ID and/or a neighboring cell ID, and when the communication device is a terminal, the local cell ID may also be referred to as a serving cell ID, and the neighboring cell ID may also be referred to as a non-serving cell ID. The cell group ID may also be understood as a neighbor cell group ID, which may also be referred to as a non-serving cell group ID when the communication device is a terminal. The super cell ID may be further divided into a local super cell ID and an adjacent super cell ID, where when the communication device is a terminal, the local super cell ID may also be referred to as a serving super cell ID, and the adjacent super cell ID may also be referred to as a non-serving super cell ID. The super cell group ID may also be understood as a neighbor super cell group ID, which may also be referred to as a non-serving super cell group ID when the communication device is a terminal.

It is to be understood that "own cell" in the present application may sometimes be referred to as "serving cell", that "neighbor cell" in the present application may sometimes be referred to as "non-serving cell", and that "neighbor cell group" in the present application may sometimes be referred to as "non-serving cell group", without affecting the understanding of the technical meaning thereof. In addition, it can be understood that the present application does not limit the relationship between the network device and the cell; for example, the same network device may serve the same cell, or may serve different cells; for another example, the same cell may be served by the same network device or may be served by a different network device. The type of interference in this application may also be referred to as an interferer, an interferer source, a source of an interfering signal, an interferer source type, an interferer from, a type of interferer from, or any other expression with similar meaning, without affecting the understanding of its technical meaning.

The correspondence of the first indication information to the interference type may be configured. The correspondence may be predefined, stored, pre-negotiated, pre-configured, or fixed, or may be configured for the terminal by the network device. The first indication information may be represented by an index, a number, an identifier or any other parameter with similar meaning. The interference type may also be configured.

Table 1 gives an example of the first indication information. The interference types are: the own cell, and/or a neighbor cell (which may also be understood as a set of neighbor cells). As shown in table 1, "0" indicates that the interference type is "own-cell interference", "1" indicates that the interference type is "neighboring-cell interference" (which can also be understood as "neighboring-cell group interference"), "2" indicates that the interference type is "own-cell interference" and "neighboring-cell interference" (which can also be understood as "neighboring-cell group interference").

TABLE 1

Indicating information	Type of interference
		0	Interference of local cell
1	Neighbor cell interference
		2	Interference of local cell and interference of adjacent cell

The representation form or the value of the indication information can be configured. For example, the indication information may indicate the interference type by 1bit, may indicate the interference type by two or more bits, or may indicate the interference type by combining with other parameters.

The source of the indication information and/or the interfering signal may be configured. The application does not limit the number or kind of interference types. For example, the local cell interference may be further divided into local cell network interference and local cell terminal interference. For another example, the neighbor cell interference may be further divided into neighbor cell (or neighbor cell group) network interference and neighbor cell (or neighbor cell group) terminal interference. As another example, in some cases, one type of interference may not be considered. For example, the case where the own cell and the neighboring cell interfere with each other is not considered.

Optionally, the interference type may further include one or more of network interference, terminal interference, local cell network interference, local cell terminal interference, neighbor cell network interference, or neighbor cell terminal interference. Table 2 gives another example of the first indication information, where the interference types include local cell network interference, neighboring cell network interference, local cell terminal interference, and neighboring cell terminal interference.

TABLE 2

Indicating information	Type of interference
		0	Local cell network interference
1	Neighbor cell network interference
		2	Terminal interference in local cell
3	Neighbor cell terminal interference

In table 2, the network interference of the neighboring cell may also be understood as network interference of a group of neighboring cells, and the terminal interference of the neighboring cell may also be understood as terminal interference of the group of neighboring cells.

Taking table 1 and the communication device as an example, a process of determining the scrambling parameter of the interference DMRS sequence is specifically described with reference to fig. 4. Fig. 4 illustrates that the method for determining the interference DMRS sequence scrambling parameter by the terminal according to the first indication information may include:

part 400, the terminal obtains the indication information in table 1.

And in the step 410, if the indication information is '0', the terminal determines that the interference DMRS is related to the cell. Optionally, the terminal may determine that the interference DMRS scrambling parameter is related to the cell identifier ID. It is understood that the interference DMRS scrambling parameter is related to the cell ID, and it can also be understood that the interference DMRS scrambling parameter is determined based on the cell ID. For example, in the scenario of interference of the local cell shown in fig. 1A, the terminal may perform the method described in section 410.

And part 420, if the indication information is '1', the terminal determines that the interference DMRS is related to a neighbor cell or a neighbor cell group. Optionally, the terminal may determine that the interfering DMRS scrambling parameter is related to a neighbor cell ID or a neighbor cell group ID. It is to be understood that the interference DMRS scrambling parameter is related to a neighbor cell ID or a neighbor cell group ID, and it is also to be understood that the interference DMRS scrambling parameter is determined based on the neighbor cell ID or the neighbor cell group ID. For example, in the scenario of neighbor cell interference or neighbor cell group interference shown in fig. 1B, the terminal may perform the method described in section 420.

And 430, if the indication information is '2', the terminal determines that the interference DMRS is related to the cell and the adjacent cell, or determines that the interference DMRS is related to the cell and the adjacent cell group. Optionally, the terminal may determine that the interference DMRS scrambling parameter is related to the current cell ID and the neighboring cell ID, or determine that the interference DMRS scrambling parameter is related to the current cell ID and the neighboring cell group ID. It can be understood that the interference DMRS scrambling parameter is related to the current cell ID and the neighboring cell ID, and it can also be understood that the interference DMRS scrambling parameter is determined based on the current cell ID and the neighboring cell ID; the interference DMRS scrambling parameter is related to the cell ID and the adjacent cell group ID, and can also be understood as being determined based on the cell ID and the adjacent cell group ID. For example, for a terminal in the scenario shown in fig. 1A and fig. 1B, the terminal may experience own-cell interference and neighbor-cell interference, or may experience own-cell interference and neighbor-cell group interference, and the terminal performs the method described in section 430.

It can be understood that, in the present embodiment, the 410 part, the 420 part, and the 430 part are in a parallel relationship, that is, when the method of the present application is specifically implemented, the terminal needs to determine to implement one of the 410 part, the 420 part, or the 430 part according to the first indication information. By the provided embodiment, the receiving end can determine the appropriate interference DMRS sequence scrambling parameter according to the first indication information, and further determine the accurate interference DMRS sequence, so that the interference channel can be estimated according to the accurate interference DMRS sequence, and the advanced receiver can perform interference deletion or interference suppression.

It is to be understood that other values, symbols, variables or identifiers may be used to identify the "own cell interference", "adjacent cell interference", and "own cell interference and adjacent cell interference" in table 1. For example, table 3 gives an example of one possible variation of table 1.

TABLE 3

Indicating information	Type of interference
		0	y0
1	y1
		2	y2

In one possible implementation, y0 identifies the own cell interference, y1 identifies the neighbor cell interference (also understood as "neighbor cell group interference"), and y2 identifies the "own cell interference" and the "neighbor cell interference" (also understood as "neighbor cell group interference").

It is to be understood that the present application is not limited to the specific relationship between the above values, symbols, variables or identifiers and the interference types identified by them, for example, in one possible embodiment, y2 identifies the own cell interference, y1 identifies the neighbor cell interference (which may also be understood as "neighbor cell group interference"), y0 identifies the "own cell interference" and the "neighbor cell interference" (which may also be understood as "neighbor cell group interference"). It should be understood that the present application also does not limit the specific values of the indication information, for example, the indication information is "3" to indicate y0, the indication information is "4" to indicate y1, and the indication information is "5" to indicate y 2. It should be further understood that the present application does not limit the number of entries of the indication information, for example, the row indicating that the indication information is "2" may not be included in table 3.

In another possible implementation, y0 indicates that the interference DMRS sequence scrambling parameter is determined based on a signal transmitted by a network device, y1 indicates that the interference DMRS sequence scrambling parameter is determined based on a signal transmitted by a terminal, and y2 indicates that the interference DMRS sequence scrambling parameter is determined based on a signal transmitted by a network device and a signal transmitted by a terminal; or y2 indicates that the interference DMRS sequence scrambling parameter is determined based on a signal transmitted by the terminal, y1 indicates that the interference DMRS sequence scrambling parameter is determined based on a signal transmitted by network equipment, and y0 indicates that the interference DMRS sequence scrambling parameter is determined based on a signal transmitted by the network equipment and a signal transmitted by the terminal. The signal sent by the network device may be a downlink signal, or a signal sent by one network device to another network device; the signal transmitted by the terminal may be an uplink signal or a signal transmitted by one terminal to another terminal.

The correspondence relationship between the first indication information and the source of the interference signal shown in table 3 may be configured. The source of the interference signal may be any one of the following: { own cell, neighbor cell (also understood as a neighbor cell group) }; alternatively, the source of the interference signal may be any one of the following: { own cell, neighbor cell (or a group of neighbor cells is understandable), own cell, and neighbor cell (or a group of neighbor cells is understandable). The correspondence may be predefined, stored, pre-negotiated, pre-configured, or fixed, or may be configured for the terminal by the network device. Taking table 3 as an example, configuring the corresponding relationship between the first indication information and the source of the interference signal may also be understood as configuring the corresponding relationship between the indication information and the interference type (which may also be understood as the source of the interference signal) in table 3; in a possible embodiment, the correspondence relationship is: the indication information "0" corresponds to the cell interference (that is, the source of the interference signal corresponding to the indication information "0" is the local cell), the indication information "1" corresponds to the neighbor cell interference or the neighbor cell group interference (that is, the source of the interference signal corresponding to the indication information "1" is the neighbor cell or the neighbor cell group), and the indication information "2" corresponds to the cell interference and the neighbor cell interference, or corresponds to the cell interference and the neighbor cell group interference (that is, the source of the interference signal corresponding to the indication information "2" is the local cell and the neighbor cell, or the source of the interference signal corresponding to the indication information "2" is the local cell and the neighbor cell group).

It is to be understood that other values, symbols, variables or identifiers may be used to identify "own cell network interference", "neighboring cell network interference", "own cell terminal interference" and "neighboring cell terminal interference" in table 2.

For example, another possible example of table 2 is given by way of example in table 4. In one possible implementation, y0 represents own-cell network interference, y1 represents neighbor-cell network interference (which can also be understood as neighbor-cell-group network interference), y2 represents own-cell terminal interference, and y3 represents neighbor-cell terminal interference (which can also be understood as neighbor-cell-group terminal interference).

Table 4.

Indicating information	Type of interference
		0	y0
1	y1
		2	y2
3	y3

Similar to table 3, the correspondence relationship between the first indication information and the source of the interference signal shown in table 4 may be configured. The source of the interference signal may be any one of the following: { network interference of the own cell, network interference of neighboring cells (which can also be understood as network interference of a neighboring cell group), terminal interference of the own cell, and terminal interference of neighboring cells (which can also be understood as terminal interference of a neighboring cell group) }.

Taking table 3 and the communication device as an example, a process of determining the scrambling parameter of the interference DMRS sequence is specifically described with reference to fig. 5. Fig. 5 illustrates that the method for determining the interference DMRS sequence scrambling parameter by the terminal according to the first indication information may include:

part 500, the terminal acquires the indication information in table 3.

510, if the indication information is "0", the terminal determines that the DMRS interfering with the cell is related to the cell; further optionally, the terminal may determine that the interference DMRS scrambling parameter is related to the cell identifier ID. It is understood that the interference DMRS scrambling parameter is related to the cell ID, and it can also be understood that the interference DMRS scrambling parameter is determined based on the cell ID. For example, a terminal interfered by the local cell in the scenario shown in fig. 1A may perform the method described in section 510.

Part 520, if the indication information is '1', the terminal determines that the interference DMRS is related to a neighbor cell or a neighbor cell group; further optionally, the terminal may determine that the interfering DMRS scrambling parameter is related to a neighbor cell ID or a neighbor cell group ID. It is to be understood that the interference DMRS scrambling parameter is related to a neighbor cell ID or a neighbor cell group ID, and it is also to be understood that the interference DMRS scrambling parameter is determined based on the neighbor cell ID or the neighbor cell group ID. For example, in the scenario shown in fig. 1B, the terminal may experience neighbor cell interference or neighbor cell group interference, and the method described in section 520 may be performed.

Part 530, if the indication information is "2", the terminal determines that the interference DMRS is related to the local cell and the neighboring cell, or determines that the interference DMRS is related to the local cell and the neighboring cell group; further optionally, the terminal may determine that the interference DMRS scrambling parameter is related to the current cell ID and the neighboring cell ID, or determine that the interference DMRS scrambling parameter is related to the current cell ID and the neighboring cell group ID. It can be understood that the interference DMRS scrambling parameter is related to the current cell ID and the neighboring cell ID, and it can also be understood that the interference DMRS scrambling parameter is determined based on the current cell ID and the neighboring cell ID; the interference DMRS scrambling parameter is related to the cell ID and the adjacent cell group ID, and can also be understood as being determined based on the cell ID and the adjacent cell group ID. For example, for a terminal in the scenario shown in fig. 1A and fig. 1B, the terminal may experience local cell interference and neighbor cell interference, or may experience local cell interference and neighbor cell group interference, and the terminal may perform the method described in section 530.

It should be noted that, in this embodiment, the

parts

510, 520, and 530 are in a parallel relationship, that is, when the method of the present application is specifically implemented, the terminal needs to determine to implement one of the

parts

510, 520, or 530 according to the first indication information. By the provided embodiment, the receiving end can determine the appropriate interference DMRS sequence scrambling parameter according to the value interference type information provided by the first indication information, and further determine the accurate interference DMRS sequence, so that the interference channel can be estimated according to the accurate interference DMRS sequence, and the advanced receiver can perform interference deletion or interference suppression.

It is to be understood that the meaning or meaning of y0, y1, y2, y3, etc. is not limited in the present application, and for example, y0, y1, y2, y3, etc. may be an index, a number, an identifier, an enumerated variable, a boolean variable, etc.

The "own-cell interference" in the present application may sometimes be referred to as "serving-cell interference", the "neighbor-cell interference" in the present application may sometimes be referred to as "non-serving-cell interference", and the "neighbor-cell group interference" in the present application may sometimes be referred to as "non-serving-cell group interference", which does not affect understanding of technical meaning thereof.

It is to be understood that the interfering DMRS sequence scrambling parameters described in fig. 4 and 5 are related to (or can be understood as being determined according to) the above-mentioned ID, that the interfering DMRS sequence scrambling parameters contain the above-mentioned ID, and that the interfering DMRS sequence scrambling parameters contain an output that is a function of the above-mentioned ID as an input.

It is to be understood that tables 1-4 are merely examples of the first indication information. Optionally, the interference types described in tables 1 to 4 may also be indicated in the first indication information in combination with other attributes.

In one possible implementation of the joint indication, the interference types in tables 1 to 4 may be indicated in the first indication information together with the interference DMRS resource parameters. The interference DMRS resource parameter may be a Code Division Multiplexing (CDM) group, an interference DMRS port parameter, an interference DMRS CDM group, and an interference DMRS port parameter. It is to be understood that the "DMRS port" in this application may sometimes be referred to as "DMRS antenna port" without affecting the understanding of the technical meaning thereof.

Fig. 6 gives an illustration of one possible DMRS CDM group, where there are 6 ports for DMRS, illustrating the distribution of the 6 DMRS ports over 12 REs. In fig. 6, the horizontal direction represents the time domain, the vertical direction represents the frequency domain, and each small square represents one RE, wherein DMRS ports 0 and 1 occupy the same RE (i.e., the top two REs), and are multiplexed by orthogonal codes [ +1, +1] and [ +1, -1], so that the REs corresponding to the two DMRS ports may be referred to as one DMRS CDM group. Three DMRS CDM groups are shown in fig. 6: DMRS CDM group 0, carrying DMRS ports 0 and 1; DMRS CDM group 1, carrying DMRS ports 2 and 3; DMRS CDM group 2, carrying DMRS ports 4 and 5.

Tables 5-1 to 5-3 illustrate examples of several joint indications of the interference type and the interference DMRS port parameter in the first indication information, wherein the meanings of y0 and y1 can be referred to the description of table 3.

Taking table 5-1 as an example, a possible example of the first indication information is given by taking the maximum number of interfering DMRS ports equal to 1 as an example. For example, when the indication information in table 5-1 is "1", it indicates that the interfering DMRS occupies the 1 st DMRS port, and y0 indicates that the interfering DMRS occupying the 1 st DMRS port is related to the cell (e.g., the interfering DMRS sequence scrambling parameter occupying the 1 st DMRS port may be related to the cell ID). For another example, when the indication information in table 5-1 is "2", it indicates that the interfering DMRS occupies the 1 st DMRS port, and y1 indicates that the interfering DMRS occupying the 1 st DMRS port is related to the neighboring cell or the neighboring cell group (e.g., the interfering DMRS sequence scrambling parameter occupying the 1 st DMRS port is related to the neighboring cell ID or the neighboring cell group ID). For another example, when the indication information in table 5-1 is "0", no interference is indicated.

TABLE 5-1

Indicating information	Interference DMRS port parameters	Type of interference
			0	Is free of	\
1	1 st DMRS port	y0
			2	1 st DMRS port	y1

Taking table 5-2 as an example, a possible example of the first indication information is given by taking the maximum number of interfering DMRS ports equal to 2 as an example. For example, when the indication information in table 5-2 is "1", it indicates that the interfering DMRS occupies the 1 st DMRS port, and y0 indicates that the interfering DMRS occupying the 1 st DMRS port is related to the cell (e.g., the interfering DMRS sequence scrambling parameter occupying the 1 st DMRS port is related to the cell ID). For another example, when the indication information in table 5-2 is "4", it indicates that the interfering DMRS occupies the 2 nd DMRS port, and y1 indicates that the interfering DMRS occupying the 2 nd DMRS port is related to an adjacent cell or an adjacent cell group (e.g., the interfering DMRS sequence scrambling parameter occupying the 2 nd DMRS port is related to an adjacent cell ID or an adjacent cell group ID). For another example, when the indication information in table 5-2 is "7", it indicates that the interfering DMRS occupies the 1 st DMRS port and the 2 nd DMRS port, and (y1, y0) indicates that the interfering DMRS occupying the 1 st DMRS port is related to a neighboring cell or a neighboring cell group (e.g., the interfering DMRS sequence scrambling parameter occupying the 1 st DMRS port is related to a neighboring cell ID or a neighboring cell group ID), and the interfering DMRS occupying the 2 nd DMRS port is related to the own cell (e.g., the interfering DMRS sequence scrambling parameter occupying the 2 nd DMRS port is related to the own cell ID).

TABLE 5-2

Taking table 5-3 as an example, a possible example of the first indication information is given by taking the maximum number of interfering DMRS ports equal to 3 as an example. For example, when the indication information in tables 5-3 is "1", it indicates that the interfering DMRS occupies the 1 st DMRS port, and y0 indicates that the interfering DMRS occupying the 1 st DMRS port is related to the cell (e.g., the interfering DMRS sequence scrambling parameter occupying the 1 st DMRS port is related to the cell ID). For another example, when the indication information in table 5-3 is "6", it indicates that the interfering DMRS occupies the 3rd DMRS port, and y1 indicates that the interfering DMRS occupying the 3rd DMRS port is related to a neighbor cell or a neighbor cell group (e.g., the interfering DMRS sequence scrambling parameter occupying the 3rd DMRS port is related to a neighbor cell ID or a neighbor cell group ID). For another example, when the indication information in tables 5 to 3 is "23", it indicates that the interfering DMRS occupies the 1 st DMRS port, the 2 nd DMRS port, and the 3rd DMRS port, and (y1, y0, y0) indicates that the interfering DMRS occupying the 1 st DMRS port is related to a neighboring cell or a neighboring cell group (e.g., the interfering DMRS sequence scrambling parameter occupying the 1 st DMRS port is related to a neighboring cell ID or a neighboring cell group ID), the interfering DMRS occupying the 2 nd DMRS port is related to the local cell (e.g., the interfering DMRS sequence scrambling parameter occupying the 2 nd DMRS port is related to the local cell ID), and the interfering DMRS occupying the 3rd DMRS port is related to the local cell (e.g., the interfering DMRS sequence scrambling parameter occupying the 3rd DMRS port is related to the local cell ID).

Tables 5 to 3

Similar to table 3, the corresponding relationship between the indication information and the source of the interference signal and the interference DMRS port shown in tables 5-1 to 5-3 may also be configured. For example, the correspondence may be predefined, stored, pre-negotiated, pre-configured, or fixed, or may be configured for the terminal by the network device. Taking table 5-1 as an example, configuring the correspondence between the first indication information and the source of the interference signal and the interfering DMRS port may also be understood as configuring the correspondence between the indication information and the interference type (also may be understood as the source of the interference signal) and the interfering DMRS port parameter in table 5-1; in a possible implementation, the correspondence is: the indication information "1" corresponds to the interference of the cell (namely, the indication information "1" corresponds to the source of the interference signal as the cell), the first DMRS port, the indication information "2" corresponds to the interference of the adjacent cell or the interference of the adjacent cell group (namely, the indication information "2" corresponds to the source of the interference signal as the adjacent cell or the adjacent cell group), and the first DMRS port, and the indication information "0" corresponds to the interference-free and interference-free DMRS port.

It can be understood that, when the communication device is a terminal, the terminal determines a scheduled DMRS port when transmitting or receiving data, and the scheduled DMRS port is understood to be a DMRS port that the terminal needs to use when receiving or transmitting data. Meanwhile, the terminal can also determine all available DMRS ports, so that the interference DMRS ports in the application can only be the DMRS ports remaining after the scheduled DMRS ports are removed from all the available DMRS ports. Note that the "scheduled DMRS" may be referred to as a "DMRS for a useful signal" in some cases, and does not affect understanding of technical meaning thereof.

Taking the above table 5-1, and taking that all available DMRS ports include DMRS port 0 and DMRS port 1 as an example, if the terminal determines that the scheduled DMRS port is DMRS port 0, the maximum number of interfering DMRS ports is 1 (that is, the interfering DMRS port may only be DMRS port 1), and the "1 st DMRS port" indicated in table 5-1 is DMRS port 1; if the terminal determines that the scheduled DMRS port is DMRS port 1, the maximum number of interfering DMRS ports is 1 (that is, the interfering DMRS ports may only be DMRS port 0), and the "1 st DMRS port" indicated in table 5-1 is DMRS port 0. Taking the above table 5-2, and taking the DMRS ports that are all available to include DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3 as an example, if the terminal determines that the DMRS ports to be scheduled are DMRS ports 0 and 1, the maximum number of interfering DMRS ports is 2 (that is, the interfering DMRS ports may only be DMRS port 2 and/or DMRS port 3), and the "1 st DMRS port" and the "2 nd DMRS port" indicated in table 5-2 are DMRS port 2 and DMRS port 3, respectively, or the "1 st DMRS port" and the "2 nd DMRS port" indicated in table 5-2 are DMRS port 3 and DMRS port 2, respectively. The above description is also applicable to the above table 5-3 and tables 5-4 to 5-6 appearing later, which will not be described in detail later.

The examples of the first indication information given in tables 5-1 to 5-3 above consume more indication states (which may be understood as the number of rows or the number of effective rows in tables 5-1, 5-2, or 5-3) when the maximum number of interfering DMRS ports is large, and indicate overhead is large. In order to reduce the indication overhead, the indication state may be reduced under certain premise. For example, by taking an example that DMRS ports in the same DMRS and CDM group all correspond to one cell (e.g., DMRS ports in the same DMRS and CDM group all correspond to the cell, or DMRS ports in the same DMRS and CDM group all correspond to neighboring cells), the indication states in tables 5-1 to 5-3 may be reduced, so as to achieve the purpose of reducing the indication overhead.

Taking tables 5 to 4 as an example, an example is given in which the maximum number of the interfering DMRS ports is equal to 1, and DMRS ports belonging to the same DMRS CDM group correspond to only one cell, and the first indication information is one possible example. Table 5-4 reduces the indication status indicating that the information in table 5-1 is "2" compared to table 5-1, because the 1 st DMRS port in table 5-4 can be understood as belonging to the same DMRS CDM group as the scheduled DMRS port, and since the scheduled DMRS port is generally from the cell, the 1 st DMRS port cannot be from the neighboring cell in this case (i.e., the 1 st DMRS port is also from the cell), and therefore, the interference DMRS sequence scrambling parameter occupying the 1 st DMRS port is not related to the neighboring cell ID or the neighboring cell group ID. Thus, the embodiment of table 5-4 reduces 1 indication state and reduces the indication overhead compared to table 5-1.

Tables 5 to 4

Indicating information	Interference DMRS port parameters	Type of interference
			0	Is free of	\
1	1 st DMRS terminalMouth piece	y0

Taking tables 5 to 5 as an example, an example is given in which the maximum number of the interfering DMRS ports is equal to 2, and DMRS ports belonging to the same DMRS CDM group correspond to only one cell, and the first indication information is one possible example. Table 5-5 reduces the indication states indicating information "6" and "7" in table 5-2 compared to table 5-2 because, under the restriction that "DMRS ports within the same DMRS CDM group correspond to only one cell", the 1 st DMRS port and the 2 nd DMRS port in table 5-5 can be understood as belonging to the same DMRS group, and thus the 1 st DMRS port and the 2 nd DMRS port can only come from the own cell or from the adjacent cell at the same time, so the interfering DMRS sequence CDM parameter occupying the 1 st DMRS port and the interfering DMRS sequence scrambling parameter occupying the 2 nd DMRS port can only be associated with the own cell ID at the same time, or with the adjacent cell ID group at the same time. Therefore, in the content corresponding to the example of tables 5 to 5 indicating information of "5" or "6", the interference types (y0, y0) or (y1, y1) indicated by the information are always the same (i.e., both y0 or both y1 are included in parentheses). Thus, the embodiment of table 5-5 reduces 2 indication states and reduces the indication overhead compared to table 5-2. It can be understood that when the number of the interfering DMRS ports in tables 5-5 is more than 1 (i.e., the indication information is "5" or "6"), the interference types corresponding to the more than 1 interfering DMRS ports can only be the same, i.e., both y0 or both y 1. Further, when the indication information in tables 5-5 corresponds to 2 interfering DMRS ports (i.e. the indication information is "5" or "6"), the interference types corresponding to the 2 interfering DMRS ports are the same, i.e. both y0 or both y 1.

Tables 5 to 5

Taking tables 5 to 6 as an example, an example is given in which the maximum number of the interfering DMRS ports is equal to 3, and DMRS ports belonging to the same DMRS CDM group correspond to only one cell, and the first indication information is one possible example. In tables 5-6, it can be understood that the 1 st DMRS port belongs to one DMRS CDM group, and the 2 nd and 3rd DMRS ports belong to another DMRS CDM group. Therefore, the interference type corresponding to the 1 st DMRS port and indicated by any one of the indication information in tables 5 to 6 may be different from or the same as the interference type of the 2 nd DMRS port, or may be different from or the same as the interference type of the 3rd DMRS port; but the interference type corresponding to the 2 nd DMRS port and the interference type corresponding to the 3rd DMRS port, which are indicated by any one of the indications in tables 5-6, must be the same, that is, the interference DMRS sequence scrambling parameter occupying the 2 nd DMRS port and the interference DMRS sequence scrambling parameter occupying the 3rd DMRS port are both related to the current cell ID, or both related to the neighboring cell group ID. Thus, the embodiment of tables 5-6 reduces 13 indication states and reduces the indication overhead compared to tables 5-3. It can be understood that, when the interfering DMRS port corresponding to the indication information in tables 5 to 6 and the scheduled DMRS port belong to the same CDM group, the interference type corresponding to the interfering DMRS port corresponding to the indication information is y 0. Further, when the number of the interference DMRS ports corresponding to the indication information in tables 5-6 is 3 (when the indication information in tables 5-6 is "12" or "13"), the interference types corresponding to the 3 interference DMRS ports have only two possible states: one state is when the interference type corresponding to one and only one of the 3 interfering DMRS ports is y0 (i.e., intra-cell interference), e.g., the indication information in tables 5-6 is "13"; the other state is that the interference types corresponding to all the 3 interfering DMRS ports are y0 (i.e., intra-cell interference), for example, when the indication information in tables 5-6 is "12".

Tables 5 to 6

Similar to tables 5-1 to 5-3, the corresponding relationships between the indication information and the sources of the interference signals and the interference DMRS ports shown in tables 5-4 to 5-6 can also be configured.

It can be understood that the example of the joint indication of the interference type and the interference DMRS CDM group in the first indication information can be obtained by adjusting the embodiments described in the above tables 5-1 to 5-6. For example: the parameters in the second columns of tables 5-1 to 5-6 are replaced with "interfering DMRS CDM group", and the "DMRS ports" in the second columns of tables 5-1 to 5-6 are replaced with "DMRS CDM group".

Taking the communication device as an example of the terminal, the terminal may receive fourth indication information (for example, scheduling information or control information included in DCI) from the network device, and determine a scheduled DMRS port according to the fourth indication information. Table 6-1 is an example of the fourth indication information, and table 6-1 takes the case that the number of all available DMRS ports is equal to 4, that is, all available DMRS ports include DMRS ports 0, 1, 2, and 3, and DMRS ports 0 and 1 belong to the 1 st CDM group, and DMRS ports 2 and 3 belong to the 2 nd CDM group. The indication information of the first column of table 6-1 may be understood as an index, a number or an identifier, the second column is the number of CDM groups not carrying data among the 1 st CDM group and the 2 nd CDM group, and the third column is an index of a DMRS port to which the terminal is scheduled. For example, when the indication information in table 6-1 is "0", it indicates that the 1 st CDM group does not carry data and DMRS port 0 is scheduled. For another example, when the indication information in table 6-1 is "7", it indicates that neither the 1 st nor the 2 nd CDM group carries data, and DMRS ports 0 and 1 are scheduled. It can be understood that, when the terminal is scheduled with 1 DMRS port, the maximum number of corresponding interfering DMRS ports is 3, and at this time, the first indication information may be as shown in table 5-3 or table 5-6 above; and when the terminal is scheduled with 2 DMRS ports, the maximum number of corresponding interfering DMRS ports is 2, and at this time, the first indication information may be as shown in table 5-2 or table 5-5 above.

It should be understood that the terminal may have different understanding on the first indication information according to different indication contents of the fourth indication information, that is, the terminal may determine the specific meaning of the first indication information according to the first indication information and the fourth indication information; or it can also be understood that the terminal may determine a table corresponding to the first indication information according to the fourth indication information, and then determine the specific meaning of the first indication information according to the determined table; or, it may also be understood that the terminal may determine a corresponding relationship between the first indication information and the interference signal source according to the fourth indication information, and then determine a specific meaning of the first indication information according to the corresponding relationship. For example, taking the number of all available DMRS ports equal to 4 as an example, if the indication information in table 6-1 is any one of "0", "1", "3", "4", "5", or "6", it may be determined that the content indicated by the first indication information is in table 5-3 or table 5-6; if the indication information in table 6-1 is any one of "2", "7", "8" or "11", it may be determined that the content indicated by the first indication information is in table 5-2 or table 5-5; if the indication information in table 6-1 is "9", it can be determined that the content indicated by the first indication information is in table 5-1 or table 5-4.

TABLE 6-1

The 4 items in table 6-1 indicating information "12" - "15" are reserved or redundant. Optionally, the redundant state may be used to indicate the relevant information of the interfering DMRS port, so that the terminal may jointly determine the relevant information of the interfering DMRS port according to the first indication information and the fourth indication information, thereby reducing overhead required by the first indication information.

Take the fourth indication information as table 6-2 as an example. For example, the indication information in table 6-2 is "3", which indicates that the 1 st and 2 nd CDM groups do not carry data, and DMRS port 0 is scheduled, while DMRS port 1 is non-interfering. For another example, when the indication information in table 6-2 is "12", it indicates that neither the 1 st nor the 2 nd CDM group carries data, and DMRS port 0 is scheduled, but DMRS port 1 has interference; optionally, it may further be determined that interference on DMRS port 1 is interference in the current cell. At this time, the first indication information does not need to indicate the interference type corresponding to the DMRS port 1 (e.g., the 1 st DMRS port in tables 5-3 or 5-6), so that the indication overhead of the first indication information is reduced (which may be understood as reducing the number of rows or the effective rows of tables 5-3 or 5-6).

TABLE 6-2

Another example of the fourth indication information is given in tables 6-3, where 6 ports are taken as examples of all available DMRS ports, DMRS ports 0, 1, 2, 3, 4 and 5, and DMRS ports 0 and 1 belong to the 1 st CDM group, DMRS ports 2 and 3 belong to the 2 nd CDM group, and DMRS ports 4 and 5 belong to the 3rd CDM group. For example, the indication information in table 6-3 is "11", indicating that the 1 st, 2 nd, and 3rd DMRS CDM groups do not carry data, and DMRS port 0 is scheduled and DMRS port 1 is non-interfering. For another example, when the indication information in tables 6 to 3 is "24", it indicates that the 1 st, 2 nd, and 3rd CDM groups do not carry data, DMRS port 0 is scheduled, and DMRS port 1 has interference; optionally, it may further be determined that interference on DMRS port 1 is interference in the current cell.

Tables 6 to 3

In another possible implementation of the above joint indication, the interference types in tables 1 to 4 are jointly indicated in the first indication information with { the interfering DMRS resource parameter and the modulation scheme of the interfering data signal }.

Table 7-1 illustrates an example in which the interference type is jointly indicated in the first indication information with { the interfering DMRS port parameter and the modulation scheme of the interfering data signal } in table 1-table 4, where the meaning of y0 and y1 may be expressed with reference to the aforementioned relevant parts, for example, the description of table 3. The DMRS port may be illustrated in fig. 6 as an example, and is not described herein again. The Modulation order of the interference data signal in table 7-1 is the Modulation mode of the interference data signal, where "2" represents Quadrature Phase Shift Keying (QPSK), "4" represents 16 Quadrature Amplitude Modulation (QAM), "6" represents 64QAM, and "8" represents 256 QAM. For example, the candidate set of modulation schemes indicated by the first indication information in table 7-1 may be {2,4,6,8}, or {2,4,6, or 8 }. Preferably, when the number of the interfering DMRS ports indicated by the first indication information is small, the candidate set of modulation schemes indicated by the first indication information may include more states, for example, 4 states {2,4,6,8 }; when the number of the interference DMRS ports indicated by the first indication information is large, the candidate set of modulation schemes indicated by the first indication information may include fewer states, for example, 3 states of {2,4,6, or 8} or 2 states of {2,4,6, or 8 }; alternatively, when the number of indicated interference ports is large, the first indication information may not indicate the modulation scheme. Therefore, the overhead required by the first indication information can be reduced on the premise of ensuring the performance of the communication equipment for deleting the interference. For example, when the number of the interfering DMRS ports indicated by the first indication information is 1, the first indication information further indicates a modulation scheme of the interfering data signal, and when the number of the interfering DMRS ports indicated by the first indication information is greater than 1, the first indication information does not indicate the modulation scheme of the interfering data signal. For another example, when the number of the interfering DMRS ports indicated by the first indication information is less than or equal to 2, the first indication information further indicates a modulation scheme of the interfering data signal, and when the number of the interfering DMRS ports indicated by the first indication information is greater than 2, the first indication information does not indicate the modulation scheme of the interfering data signal.

For example, "6 or 8" in the candidate set of modulation schemes indicated by the first indication information indicates that the corresponding interference data signal is modulated by "64 QAM" or "256 QAM", and the receiving end may blindly detect the interference data signal by using 64QAM and 256QAM according to the information. The design can reduce the signaling overhead of the first indication information, i.e. two separate indication states do not need to be allocated to 64QAM and 256QAM, thereby reducing the number of entries or bits of the first indication information. Preferably, the joint indication is adopted for the high-order modulation mode, and the independent indication is adopted for the low-order modulation mode, that is, the single indication is adopted for both the low-order modulation modes QPSK and 16QAM, and the joint indication is adopted for the high-order modulation modes 64QAM and 256 QAM. The design mainly considers that for the interference data signals of a low-order modulation mode, a receiving end is easier to delete or inhibit, so that the indication can be more precise, and the performance gain is ensured to be obtained; for the interference data signal of the high-order modulation mode, even if the indication is accurate, the deletion or suppression is not easy to occur at the receiving end due to the complexity or power consumption, so that the indication can be coarser, and the indication overhead is reduced.

Taking table 7-1 as an example, a possible example of the first indication information is given by taking the maximum number of interfering DMRS ports equal to 1 as an example. For example, when the indication information in table 7-1 is "1", the indication indicates that the interfering DMRS occupies the 1 st DMRS port, the interfering data signal is QPSK modulated, and y0 indicates that the interfering DMRS is related to the cell (e.g., the interfering DMRS sequence scrambling parameter is related to the cell ID). For another example, when the indication information in table 7-1 is "6", it indicates that the interfering DMRS occupies the 1 st DMRS port, that the interfering data signal is modulated by 64QAM or 256QAM, and y1 indicates that the interfering DMRS is related to the neighbor cell or the neighbor cell group (e.g., the interfering DMRS sequence scrambling parameter is related to the neighbor cell ID).

TABLE 7-1

When the maximum number of interfering DMRS ports is 2, the first indication information may be shown in table 7-2, table 7-3, or table 7-4. For example, when the indication information in table 7-2 is "1", it indicates that the interfering DMRS occupies the 1 st DMRS port, the interfering data signal adopts QPSK modulation, and y0 indicates that the interfering DMRS is related to the cell (e.g., the interfering DMRS sequence scrambling parameter is related to the cell ID). For another example, when the indication information in table 7-2 is "14", it indicates that the first interfering DMRS occupies the 1 st DMRS port, the first interfering data signal adopts QPSK modulation, and y0 indicates that the first interfering DMRS is related to the cell (e.g., the scrambling parameter of the first interfering DMRS sequence is related to the cell ID); and indicating that the second interference DMRS occupies the 2 nd DMRS port, the second interference data signal adopts 16QAM modulation, and y0 indicates that the second interference DMRS is related to the cell (for example, the scrambling parameter of the second interference DMRS sequence is related to the cell ID). For another example, when the indication information in table 7-2 is "18", it indicates that the first interfering DMRS occupies the 1 st DMRS port, the first interfering data signal is modulated by 16QAM, and y0 indicates that the first interfering DMRS is related to the cell (for example, the scrambling parameter of the first interfering DMRS sequence is related to the cell ID); and indicating that the second interference DMRS occupies the 2 nd DMRS port, the second interference data signal is modulated by 64QAM or 256QAM, and y0 indicates that the second interference DMRS is related to the cell (for example, the scrambling parameter of the second interference DMRS sequence is related to the cell ID).

TABLE 7-2

Tables 7 to 3

Tables 7 to 4

The correspondence between the indication information shown in tables 7-1 to 7-4 and the source of the interference signal, the modulation order of the interference data signal, and the interference DMRS port may also be configured. For example, the correspondence may be predefined, stored, pre-negotiated, pre-configured, or fixed, or may be configured for the terminal by the network device. Taking table 7-1 as an example, configuring the corresponding relationship between the first indication information and the source of the interference signal, the modulation order of the interference data signal, and the interference DMRS port may also be understood as configuring the corresponding relationship between the indication information and the interference type (which may also be understood as the source of the interference signal), the modulation order of the interference data signal, and the interference DMRS port parameter in table 7-1; for example, in one possible implementation, the correspondence relationship is: the indication information "1" corresponds to the interference of the cell (namely, the source of the interference signal corresponding to the indication information "1" is the cell), the modulation order of the interference data signal is 2, and the first DMRS port; the indication information "2" corresponds to adjacent cell interference or adjacent cell group interference (that is, the source of the interference signal corresponding to the indication information "2" is an adjacent cell or an adjacent cell group), the modulation order of the interference data signal is 4, and the first DMRS port.

It is understood that examples of the interference type and the interference DMRS CDM group described in tables 1 to 4 and the modulation scheme of the aforementioned interference data signal jointly indicated in the first indication information may be obtained by adjusting the embodiments described in tables 7 to 1 to 7 to 4. For example, the headings in the second columns of tables 7-1 to 7-4 are replaced with "interfering DMRS CDM group", and the "DMRS ports" in the second columns of tables 7-1 to 7-4 are replaced with "DMRS CDM group". The detailed implementation of the table is not described herein.

Through the joint indication methods of the above examples, the overhead of the indication information can be reduced when the interference DMRS sequence scrambling parameter, the interference DMRS resource parameter, and the modulation mode of the interference data signal need to be indicated at the same time.

The tables in the foregoing embodiments of the present application are provided by way of example only to show some possible specific indications of the first indication information in the present application, and it should be understood that this application does not exclude other specific indications, and the protection scope of the present application is only to the extent that the actual indications are consistent with the embodiments of the present application.

Optionally, in the embodiment of the present application described in fig. 4 and fig. 5, the terminal needs to obtain the neighboring cell ID or the neighboring cell group ID, and then determines the interference DMRS sequence scrambling parameter according to the neighboring cell ID or the neighboring cell group ID.

In a possible implementation manner that the terminal obtains the neighboring cell ID or the neighboring cell group ID, the terminal receives second indication information sent by the network device, where the second indication information may be system information sent by the network device, and the system information includes the neighboring cell ID or the neighboring cell group ID. And the terminal determines the ID of the adjacent cell or the ID of the group of adjacent cells according to the system information sent by the network equipment.

In another possible implementation manner that the terminal obtains the neighbor cell ID or the neighbor cell group ID, the terminal receives second indication information sent by another terminal, where the second indication information includes the neighbor cell ID or the neighbor cell group ID, and the neighbor cell or the neighbor cell group is a serving cell or a serving cell group of the another terminal. And the terminal determines the adjacent cell ID or the adjacent cell group ID according to the second indication information sent by the other terminals.

In another possible implementation manner of obtaining the ID of the neighboring cell or the ID of the neighboring cell group by the terminal, the terminal receives a synchronization signal, and determines the ID of the neighboring cell or the ID of the neighboring cell group according to a correspondence between the synchronization signal and the neighboring cell or the neighboring cell group. For example, taking two neighboring cells { neighboring cell 1, neighboring cell 2} as an example, the IDs are { neighboring cell ID1, neighboring cell ID2}, respectively, and the synchronization signals corresponding to neighboring cell 1 and neighboring cell 2 are { synchronization signal 1, synchronization signal 2}, respectively. If the terminal detects the synchronization signal 1, it may determine that the neighboring cell ID is the neighboring cell ID 1; if the terminal detects synchronization signal 2, it may determine that the neighboring cell ID is neighboring cell ID 2. Further, the corresponding relationship between the synchronization signal and the neighboring cell or the neighboring cell group may be predefined, or may be configured by the third indication information sent by the network device to the terminal.

In another possible implementation manner of the terminal obtaining the neighboring cell ID or the neighboring cell group ID, the terminal receives a synchronization signal block, and determines the neighboring cell ID or the neighboring cell group ID according to a correspondence between the synchronization signal block and the neighboring cell or the neighboring cell group. For example, taking two neighboring cells { neighboring cell 1, neighboring cell 2} as an example, the IDs are { neighboring cell ID1, neighboring cell ID2}, respectively, and the synchronization signal blocks corresponding to neighboring cell 1 and neighboring cell 2 are { synchronization signal block 1, synchronization signal block 2}, respectively. If the terminal detects a synchronization signal block 1, it may determine that the neighboring cell ID is a neighboring cell ID 1; if the terminal detects synchronization signal block 2, it may determine that the neighbor cell ID is neighbor cell ID 2. Further, the corresponding relationship between the synchronization signal block and the neighboring cell or the neighboring cell group may be predefined, or may be configured by the third indication information sent by the network device to the terminal.

In another possible implementation manner of obtaining the neighboring cell ID or the neighboring cell group ID by the terminal, the terminal receives a channel state information reference signal CSI-RS, and determines the neighboring cell ID or the neighboring cell group ID according to a correspondence between the CSI-RS and the neighboring cell or the neighboring cell group. For example, taking two neighboring cells { neighboring cell 1, neighboring cell 2} as an example, the IDs are { neighboring cell ID1, neighboring cell ID2}, respectively, and the CSI-RSs corresponding to neighboring cell 1 and neighboring cell 2 are { CSI-RS1, CSI-RS2}, respectively. If the terminal detects the CSI-RS1, it may be determined that the neighboring cell ID is neighboring cell ID 1; if the terminal detects the CSI-RS2, it may be determined that the neighboring cell ID is the neighboring cell ID 2. Further, the corresponding relationship between the CSI-RS and the neighboring cell or the neighboring cell group may be predefined, or may be configured by third indication information sent by the network device to the terminal.

It is to be understood that the above-mentioned detection of the synchronization signal, the synchronization signal block or the CSI-RS may be understood as the detected signal strength being greater than or not less than a threshold value, which may be predefined or configured.

Through the above 210 possible embodiments, the receiving end can obtain accurate interference DMRS sequence scrambling parameters or interference types, and the problem that the receiving end cannot determine interference DMRS sequence scrambling parameters in a scenario where local cell interference and adjacent cell interference coexist, and thus cannot perform interference cancellation or interference suppression by using an advanced receiver is solved.

In part 220, the communication device determines the interference DMRS sequence scrambling parameter and the power ratio of the interference data signal to the interference DMRS according to the first indication information, that is, the communication device may determine the power ratio of the interference data signal to the interference DMRS in addition to the interference DMRS sequence scrambling parameter according to the first indication information. The method for determining the interference DMRS sequence scrambling parameter by the communication device according to the first indication information may refer to the description of the section 210, and details are not described here. Only the specific implementation of the communication device determining the power ratio of the interfering data signal to the interfering DMRS according to the first indication information is described herein.

In one possible implementation of part 220, the power ratio of the interfering data signal to the interfering DMRS is 4.77dB or 3dB, and the communication device determines whether the power ratio of the interfering data signal to the interfering DMRS is 4.77dB or 3dB according to the first indication information. Table 8 gives another example of the first indication information. As shown in table 8, when the indication information is "0", it indicates that the power ratio of the interfering data signal to the interfering DMRS is 4.77 dB; and when the indication information is '1', indicating that the power ratio of the interference data signal to the interference DMRS is 3 dB.

TABLE 8

Indicating information	Power ratio of interfering data signal to interfering DMRS
		0	4.77dB
1	3dB

In another possible implementation manner of part 220, the power ratio of the interfering data signal to the interfering DMRS is 0dB or 3dB, and the communication device determines whether the power ratio of the interfering data signal to the interfering DMRS is 0dB or 3dB according to the first indication information. Table 9 gives yet another example of the first indication information. As shown in table 9, when the indication information is "0", it indicates that the power ratio of the interfering data signal to the interfering DMRS is 0 dB; and when the indication information is '1', indicating that the power ratio of the interference data signal to the interference DMRS is 3 dB.

TABLE 9

Indicating information	Power ratio of interfering data signal to interfering DMRS
		0	0dB
1	3dB

In yet another possible implementation manner of part 220, the power ratio of the interfering data signal to the interfering DMRS is 0dB, 3dB, or 4.77dB, and the communication device determines whether the power ratio of the interfering data signal to the interfering DMRS is 0dB, 3dB, or 4.77dB according to the first indication information. Table 9 gives yet another example of the first indication information. As shown in table 10, when the indication information is "0", it indicates that the power ratio of the interfering data signal to the interfering DMRS is 0 dB; when the indication information is '1', indicating that the power ratio of the interference data signal to the interference DMRS is 3 dB; and when the indication information is '2', indicating that the power ratio of the interference data signal to the interference DMRS is 4.77 dB.

Watch 10

Indicating information	Power ratio of interfering data signal to interfering DMRS
		0	0dB
1	3dB
		2	4.77dB

The correspondence relationship between the indication information and the power ratio of the data of the interfering signal and the DMRS of the interfering signal shown in tables 8 to 10 may be configured. For example, the correspondence may be predefined, stored, pre-negotiated, pre-configured, or fixed, or may be configured for the terminal by the network device. Taking table 8 as an example, configuring the corresponding relationship between the first indication information and the power ratio between the data of the interfering signal and the DMRS of the interfering signal may also be understood as configuring the corresponding relationship between the indication information and the power ratio between the interfering data signal and the DMRS of the interfering signal in table 8; in a possible embodiment, the correspondence relationship is: the power ratio of the interference data signal to the interference DMRS corresponding to the indication information '0' is 4.77 dB; and the power ratio of the interference data signal to the interference DMRS corresponding to the indication information '1' is 3 dB.

It is understood that the above tables 8 to 10 only give three forms of power ratios of the interfering data signal and the interfering DMRS that may be indicated by the first indication information in the present application by way of example. The present application does not exclude other forms of indications, such as: and jointly indicating the power ratio and other attributes, or predefining a corresponding relation between the power ratio and other attributes, so that the power ratio can be implicitly obtained when other attributes are indicated.

In a possible implementation manner that the power ratio is jointly indicated together with other attributes, the first indication information jointly indicates the interference DMRS port parameter and the power ratio. Table 11 gives yet another example of the first indication information. For example, when the indication information in table 11 is "1", it indicates that the interfering DMRS occupies the 1 st DMRS port, and the power ratio of the interfering data signal to the interfering DMRS is 0 dB. For another example, when the indication information in table 11 is "2", the interference DMRS is indicated to occupy the 2 nd DMRS port, and the power ratio of the interference data signal to the interference DMRS is 3 dB.

TABLE 11

The correspondence relationship between the indication information and the data of the interfering signal and the DMRS of the interfering signal and the interfering DMRS port shown in table 11 may also be configured. For example, the correspondence may be predefined, stored, pre-negotiated, pre-configured, or fixed, or may be configured for the terminal by the network device. For example, configuring the power ratio of the data of the first indication information and the interfering signal to the DMRS of the interfering signal and the corresponding relationship of the interfering DMRS ports may also be understood as configuring the power ratio of the indication information and the interfering data signal to the interfering DMRS and the corresponding relationship of the interfering DMRS ports in table 11; in a possible embodiment, the correspondence relationship is: the indication information '1' corresponds to the power ratio of the interference data signal to the interference DMRS is 0dB, and a first DMRS port; the indication information '2' corresponds to the power ratio of the interference data signal to the interference DMRS being 3dB and a second DMRS port; the indication information "0" corresponds to non-interfering, and non-interfering DMRS ports.

In another possible implementation manner of jointly indicating the power ratio together with other attributes, the first indication information jointly indicates the interference DMRS CDM group and the power ratio. For example, the content indicated by the first indication information may be as shown in table 12-1 or table 12-2. For example, when the indication information in table 12-2 is "1", it indicates that the interfering DMRS occupies the 1 st DMRS CDM group, and the power ratio of the interfering data signal to the interfering DMRS is 0 dB. For another example, when the indication information in table 12-2 is "4", it indicates that the first interfering DMRS occupies the 1 st DMRS CDM group, and the power ratio of the first interfering data signal to the first interfering DMRS is 4.77 dB; and indicating that the second interference DMRS occupies the 2 nd DMRS CDM group, wherein the power ratio of the second interference data signal to the second interference DMRS is 3 dB.

TABLE 12-1

TABLE 12-2

The correspondence relationship of the indication information and the power ratio of the data of the interfering signal and the DMRS of the interfering signal, and the interfering DMRS CDM group shown in tables 12-1 and 12-2 may be configured. For example, the correspondence may be predefined, stored, pre-negotiated, pre-configured, or fixed, or may be configured for the terminal by the network device. Taking table 12-1 as an example, configuring the power ratio of the data of the first indication information and the interfering signal to the DMRS of the interfering signal and the corresponding relationship of the interfering DMRS CDM group can also be understood as configuring the power ratio of the indication information and the interfering data signal to the interfering DMRS and the corresponding relationship of the interfering DMRS CDM group in table 12-1; in a possible embodiment, the correspondence relationship is: indication information '1' corresponds to that the power ratio of the interference data signal to the interference DMRS is 3dB and a first DMRS CDM group; indication information of "2" corresponds to a power ratio of the interfering data signal to the interfering DMRS of 4.77dB, and a second DMRS CDM group; the indication information "0" corresponds to non-interfering, and non-interfering DMRS ports.

In another possible implementation manner that the above power ratio value is jointly indicated together with other attributes, the first indication information jointly indicates the interference DMRS port parameter, the above power ratio value, and the interference type in tables 1 to 4. For example, the content indicated by the first indication information may be as shown in table 13, wherein the description of y0 and y1 may refer to the description of table 3. For example, when the indication information in table 13 is "1", it indicates that the interfering DMRS occupies the 1 st DMRS port, the power ratio of the interfering data signal to the interfering DMRS is 0dB, and y0 indicates that the interfering DMRS is related to the cell (e.g., the interfering DMRS sequence scrambling parameter is related to the cell ID). For another example, when the indication information in table 13 is "3", the interfering DMRS is indicated to occupy the 2 nd DMRS port, the power ratio of the interfering data signal to the interfering DMRS is 3dB, and y1 indicates that the interfering DMRS is related to the neighboring cell or the neighboring cell group (e.g., the interfering DMRS sequence scrambling parameter is related to the neighboring cell ID or the neighboring cell group ID).

Watch 13

The correspondence relationship between the indication information and the data of the interfering signal and the DMRS of the interfering signal, the source of the interfering signal, and the interfering DMRS port shown in table 13 may be configured. For example, the correspondence may be predefined, stored, pre-negotiated, pre-configured, or fixed, or may be configured for the terminal by the network device. For example, configuring the corresponding relationship between the first indication information and the data of the interfering signal and the DMRS of the interfering signal, the source of the interfering signal, and the interfering DMRS port may also be understood as configuring the corresponding relationship between the indication information and the power ratio between the interfering data signal and the interfering DMRS, the interference type, and the interfering DMRS port in table 13; in a possible embodiment, the correspondence relationship is: indicating information '1' corresponds to the cell interference, the power ratio of the interference data signal to the interference DMRS is 0dB, and a first DMRS port; indicating information '2' corresponds to adjacent cell interference or adjacent cell group interference, the power ratio of the interference data signal to the interference DMRS is 3dB, and a second DMRS port; the indication information "0" corresponds to non-interfering, and non-interfering DMRS ports.

In another possible implementation manner of jointly indicating the power ratio and other attributes, the first indication information jointly indicates the interference DMRS port parameter, the modulation mode of the interference data signal, the power ratio, and the interference types in tables 1 to 4. For example, the content indicated by the first indication information may be as shown in table 14, wherein the descriptions of y0 and y1 may refer to the description of table 3. For example, when the indication information in table 14 is "1", it indicates that the interfering DMRS occupies the 1 st DMRS port, the interfering data signal is QPSK modulated, the power ratio of the interfering data signal to the interfering DMRS is 0dB, and y0 indicates that the interfering DMRS is related to the cell (e.g., the interfering DMRS sequence scrambling parameter is related to the cell ID). For another example, when the indication information in table 14 is "3", the indication indicates that the interfering DMRS occupies the 1 st DMRS port, the interfering data signal is modulated by 64QAM or 256QAM, the power ratio of the interfering data signal to the interfering DMRS is 0dB, and y0 indicates that the interfering DMRS is related to the cell (e.g., the scrambling parameter of the interfering DMRS sequence is related to the cell ID).

TABLE 14

The correspondence relationship between the indication information and the DMRS of the data of the interfering signal and the interfering signal, the source of the interfering signal, the modulation order of the interfering data signal, and the interfering DMRS port in table 14 may be configured. The correspondence may also be configured for the terminal by the network device, for example by predefined, stored, pre-negotiated, pre-configured or fixed correspondence. For example, configuring the corresponding relationship between the first indication information and the data of the interfering signal and the DMRS of the interfering signal, the source of the interfering signal, the modulation order of the interfering data signal, and the interfering DMRS port may also be understood as configuring the corresponding relationship between the indication information and the power ratio between the interfering data signal and the interfering DMRS, the interference type, the modulation order of the interfering data signal, and the interfering DMRS port in table 14; in a possible embodiment, the correspondence relationship is: for example, in table 14, the indication information "1" corresponds to the own cell interference, the power ratio of the interference data signal to the interference DMRS is 0dB, the modulation order of the interference data signal is 2, and the first DMRS port; the indication information '4' corresponds to adjacent cell interference or adjacent cell group interference, the power ratio of the interference data signal to the interference DMRS is 0dB, the modulation order of the interference data signal is 2, and a second DMRS port.

Through the above 220 possible embodiments, the receiving end can obtain accurate interference DMRS sequence scrambling parameters or interference types and power ratios of the interference data signals and the interference DMRSs, and solve the problem that the receiving end cannot determine the interference DMRS sequence scrambling parameters and the power ratios of the interference data signals and the interference DMRSs in a scenario where the cell interference and the adjacent cell interference coexist and the power difference between the interference data signals and the interference DMRSs is variable, and thus cannot perform interference cancellation or interference suppression by using an advanced receiver.

In the section 230, the communication device may determine, according to the first indication information, a power ratio between the interfering data signal and the interfering DMRS under the condition that the scrambling parameter of the interfering DMRS sequence is not determined, and a specific implementation method thereof may refer to the description in the section 220, which is not described herein again.

Through the 230 possible implementation manners, the receiving end can obtain an accurate power ratio of the interference data signal and the interference DMRS, and the problem that the receiving end cannot determine the power ratio of the interference data signal and the interference DMRS in a scene with a variable power difference between the interference data signal and the interference DMRS, so that an advanced receiver cannot be used for interference deletion or interference suppression is solved.

It is to be understood that the exemplary tables listed in the present application are intended to illustrate the correspondence relationship between the indication information in the tables and the interference types, the ports of the DMRS of the interfering signal, the code division multiplexing, CDM, group of the DMRS of the interfering signal, the modulation method of the data of the interfering signal, or the power ratios of the data of the interfering signal and the DMRS of the interfering signal in the tables. The specific values of the interference type, the port of the DMRS of the interference signal, the code division multiplexing CDM group of the DMRS of the interference signal, the modulation method of the data of the interference signal, or the power ratio of the data of the interference signal to the DMRS of the interference signal in the table are not limited in the present application. The number of entries (e.g., the number of rows, or columns, or the number of active rows, or the number of active columns) in the exemplary table is not limited in this application, where the number of active rows in this application may be understood as excluding the number of rows after the reserved rows, and the number of active columns may be understood as excluding the number of columns after the reserved columns, nor is the specific name of the above-mentioned interference type, the port of the DMRS of the interfering signal, the code division multiplexing CDM group of the DMRS of the interfering signal, the modulation mode of the data of the interfering signal, or the power ratio of the data of the interfering signal to the DMRS of the interfering signal in the table. All expressions corresponding to the above relationships shall fall within the scope of protection of the present application.

It is to be understood that the above-described embodiments of the present application do not limit the maximum number of interfering DMRS ports or the specific number of DMRS CDM groups, for example, the maximum number of interfering DMRS ports may be other non-negative integers (e.g., 0, 4, 7, etc.) besides 1, 2, and 3 described in the above-described embodiments. The above-described embodiments of the present application also do not limit the detailed names of the contents indicated in the first indication information, and all the contents of the contents indicated by the first indication information are within the protection scope of the present application as long as the substantial contents of the contents indicated by the first indication information are consistent with the embodiments of the present application.

The corresponding relationship shown in each table may be configured, and the value of the indication information in each table is only an example, and may be configured as other values, which is not limited in the present application. When the correspondence between the instruction information and each parameter is configured, it is not always necessary to configure all the correspondences indicated in each table. For example, in the above table, the correspondence relationship shown in some rows may not be configured. For another example, appropriate modification adjustments, such as splitting, merging, etc., can be made based on the above tables. The names of the parameters in the tables can also adopt other names understandable by the communication equipment, and the values or the expression modes of the parameters can also adopt other values or expression modes understandable by the communication equipment. When the above tables are implemented, other data structures may be used, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables may be used.

It is to be understood that the method implemented by the communication device in the above-described method embodiments may also be implemented by a component (e.g., an integrated circuit, a chip, etc.) that can be used for the communication device.

Corresponding to the wireless communication method provided by the above method embodiment, the present application embodiment also provides a corresponding communication apparatus (sometimes also referred to as a communication device), where the communication apparatus includes corresponding modules for executing each part in the above embodiments. The module may be software, hardware, or a combination of software and hardware.

Fig. 7 shows a schematic structural diagram of a communication device. The communication apparatus 700 may be the

network device

10 or 20 in fig. 1C, or may be the terminal 11, 12, 21, or 22 in fig. 1. The communication apparatus may be configured to implement the method corresponding to the communication device described in the above method embodiment, and specific reference may be made to the description in the above method embodiment.

The communication device 700 may comprise one or more processors 701, where the processors 701 may also be referred to as processing units and may implement certain control functions. The processor 701 may be a general-purpose processor or a special-purpose processor, etc. For example, a baseband processor or a central processor. The baseband processor may be configured to process communication protocols and communication data, and the central processor may be configured to control a communication device (e.g., a base station, a baseband chip, a Distributed Unit (DU) or a Centralized Unit (CU)), execute a software program, and process data of the software program.

In an alternative design, the processor 701 may also store instructions and/or data 703, and the instructions and/or data 703 may be executed by the processor, so that the communication apparatus 700 performs the method corresponding to the communication device described in the above method embodiment.

In an alternative design, a transceiver unit may be included in processor 701 for performing receive and transmit functions. The transceiving unit may be a transceiving circuit, or an interface, for example. The circuits or interfaces used to implement the receive and transmit functions may be separate or integrated.

In yet another possible design, communications device 700 may include circuitry that may implement the functionality of transmitting or receiving or communicating in the foregoing method embodiments.

Optionally, the communication device 700 may include one or more memories 702, on which instructions 704 may be stored, and the instructions may be executed on the processor, so that the communication device 700 performs the methods described in the above method embodiments. Optionally, the memory may further store data therein. Optionally, instructions and/or data may also be stored in the processor. The processor and the memory may be provided separately or may be integrated together. For example, the various correspondences described in the above method embodiments may be stored in a memory or in a processor.

Optionally, the communication device 700 may further include a transceiver 705 and/or an antenna 706. The processor 701 may be referred to as a processing unit and controls a communication apparatus (terminal or network device). The transceiver 705 may be referred to as a transceiver unit, a transceiver, a transceiving circuit or a transceiver, etc. for implementing transceiving functions of the communication device.

In one possible design, a communications apparatus 700 (e.g., an integrated circuit, a wireless device, a circuit module, a network device, a terminal, etc.) may include a processor 701 and a transceiver 705. Receiving, by the transceiver 705, the first indication information; determining, by the processor 701, that a demodulation reference signal (DMRS) of the interfering signal is related to a serving cell and/or that the DMRS of the interfering signal is related to a non-serving cell or a non-serving cell group according to the first indication information.

The processors and transceivers described herein may be implemented on Integrated Circuits (ICs), analog ICs, Radio Frequency Integrated Circuits (RFICs), mixed signal ICs, Application Specific Integrated Circuits (ASICs), Printed Circuit Boards (PCBs), electronic devices, and the like. The processor and transceiver may also be fabricated using various IC process technologies, such as Complementary Metal Oxide Semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (PMOS), Bipolar Junction Transistor (BJT), Bipolar CMOS (bicmos), silicon germanium (SiGe), gallium arsenide (GaAs), and the like.

Although in the above description of the embodiments, the communication apparatus is described by taking a network device or a terminal as an example, the scope of the communication apparatus described in the present application is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 7. The communication means may be a stand-alone device or may be part of a larger device. For example, the device may be:

(1) a stand-alone integrated circuit IC, or chip, or system-on-chip or subsystem;

(2) a set of one or more ICs, which optionally may also include storage components for storing data and/or instructions;

(3) an ASIC, such as a modem (MSM);

(4) a module that may be embedded within other devices;

(5) receivers, terminals, smart terminals, cellular phones, wireless devices, handsets, mobile units, in-vehicle devices, network devices, cloud devices, artificial intelligence devices, and the like;

(6) others, and so forth.

Fig. 8 provides a schematic structural diagram of a terminal. The terminal may be adapted for use in the system shown in fig. 1C. For convenience of explanation, fig. 8 shows only main components of the terminal. As shown in fig. 8, the terminal 800 includes a processor, a memory, a control circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the whole terminal, executing software programs and processing data of the software programs. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user.

When the user equipment is started, the processor can read the software program in the storage unit, analyze and execute the instruction of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit processes the baseband signals to obtain radio frequency signals and sends the radio frequency signals outwards in the form of electromagnetic waves through the antenna. When data is transmitted to the user equipment, the radio frequency circuit receives a radio frequency signal through the antenna, the radio frequency signal is further converted into a baseband signal and the baseband signal is output to the processor, and the processor converts the baseband signal into the data and processes the data.

Those skilled in the art will appreciate that fig. 8 shows only one memory and processor for ease of illustration. In an actual terminal, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this respect in the embodiment of the present invention.

As an alternative implementation manner, the processor may include a baseband processor and a central processing unit, where the baseband processor is mainly used to process a communication protocol and communication data, and the central processing unit is mainly used to control the whole terminal, execute a software program, and process data of the software program. The processor in fig. 8 integrates the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the terminal may include a plurality of baseband processors to accommodate different network formats, a plurality of central processors to enhance its processing capability, and various components of the terminal may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

In one example, an antenna and a control circuit with transceiving functions can be considered as a transceiving unit 811 of the terminal 800, and a processor with processing functions can be considered as a processing unit 812 of the terminal 800. As shown in fig. 8, the terminal 800 includes a transceiving unit 811 and a processing unit 812. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. Alternatively, a device for implementing a receiving function in the transceiving unit 811 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiving unit 811 may be regarded as a transmitting unit, that is, the transceiving unit 811 includes a receiving unit and a transmitting unit. For example, the receiving unit may also be referred to as a receiver, a receiving circuit, etc., and the sending unit may be referred to as a transmitter, a transmitting circuit, etc. Optionally, the receiving unit and the sending unit may be an integrated unit, or may be multiple units independent of each other. The receiving unit and the transmitting unit may be located in one geographical location, or may be dispersed in a plurality of geographical locations.

As shown in fig. 9, another embodiment of the present application provides a communication apparatus (communication device) 900. The communication device may be a terminal (e.g., a terminal in the system of fig. 1A,1B, 1C) or a component of a terminal (e.g., an integrated circuit, a chip, etc.). The communication apparatus may also be a network device (e.g., the communication apparatus is a base station device that can be applied to the systems of fig. 1A,1B,1C, 1D), or may be a component (e.g., an integrated circuit, a chip, etc.) of a network device. The communication device may also be another communication module, and is configured to implement the operation corresponding to the communication device in the embodiment of the method of the present application. The communication device 900 may include a processing module 902 (processing unit). Optionally, a transceiver module 901 (transceiver unit) and a storage module 903 (storage unit) may also be included.

In one possible design, one or more of the modules in FIG. 9 may be implemented by one or more processors or by one or more processors and memory; or by one or more processors and transceivers; or by one or more processors, memories, and transceivers, which are not limited in this application. The processor, the memory and the transceiver can be arranged independently or integrated.

The communication apparatus has a function of implementing the terminal described in the embodiment of the present application, for example, the communication apparatus includes a module or a unit or means (means) corresponding to the terminal performing the terminal related steps described in the embodiment of the present application, and the function or the unit or the means (means) may be implemented by software, or implemented by hardware executing corresponding software. Reference may be made in detail to the respective description of the corresponding method embodiments hereinbefore.

Or the communication apparatus has a function of implementing the network device described in the embodiment of the present application, for example, the communication apparatus includes a module or a unit or means (means) corresponding to the network device executing the network device related steps described in the embodiment of the present application, and the function or the unit or the means (means) may be implemented by software or hardware, or may be implemented by hardware executing corresponding software. Reference may be made in detail to the respective description of the corresponding method embodiments hereinbefore.

Optionally, each module in the communication apparatus 900 in this embodiment of the present application may be configured to execute the method described in this embodiment of the present application.

In a possible embodiment, the transceiver module 901 receives the first indication information; the processing module 902 determines that a demodulation reference signal DMRS of the interfering signal is related to a serving cell and/or the demodulation reference signal DMRS of the interfering signal is related to a non-serving cell or a non-serving cell group according to the first indication information.

Optionally, the processing module 902 determines that a scrambling parameter of a DMRS sequence of the interfering signal is related to a serving cell identifier, ID.

Optionally, the processing module 902 determines that the scrambling parameter of the DMRS sequence of the interfering signal is related to a non-serving cell ID or a non-serving cell group ID.

Optionally, the processing module 902 determines, according to the first indication information, one or more of the following information: a port of the DMRS of the interference signal, a code division multiplexing, CDM, group of the DMRS of the interference signal, a modulation scheme of data of the interference signal, or a power ratio of the data of the interference signal to the DMRS of the interference signal.

Optionally, the transceiver module 901 receives second indication information, and the processing module 902 determines the non-serving cell ID or non-serving cell group ID according to the second indication information.

Optionally, the transceiver module 901 receives a measurement signal, and the processing module 902 determines the non-serving cell ID or non-serving cell group ID according to the measurement signal, where the measurement signal is a synchronization signal, a synchronization signal block, or a channel state information reference signal CSI-RS.

Optionally, the transceiver module 901 receives third indication information, and the processing module 902 determines that the measurement signal corresponds to the non-serving cell ID or the non-serving cell group ID according to the third indication information.

Optionally, the power ratio of the data of the interfering signal to the DMRS of the interfering signal is any one of {0dB, 3dB, 4.77dB }.

Optionally, the data of the interference signal is modulated by any one of { Quadrature Phase Shift Keying (QPSK),16 Quadrature Amplitude Modulation (QAM),64QAM, and 256QAM }.

Optionally, the first indication information is carried by downlink control information, uplink control information, sidelink control information, or network control information.

Optionally, the processing module 902 configures a corresponding relationship between the first indication information and a source of an interference signal; the processing module 902 determines, according to the correspondence between the first indication information and the source of the interfering signal, that the DMRS of the interfering signal is related to a serving cell and/or the DMRS of the interfering signal is related to a non-serving cell or a non-serving cell group.

Optionally, the processing module 902 determines a corresponding relationship between the first indication information and the interference signal source according to the fourth indication information; the processing module 902 determines that the DMRS of the interfering signal is related to a serving cell and/or the DMRS of the interfering signal is related to a non-serving cell or a non-serving cell group according to the correspondence between the first indication information and the source of the interfering signal.

Optionally, the source of the interference signal is any one of the following: a serving cell; a non-serving cell; a non-serving cell group; a serving cell and a non-serving cell; a serving cell and a non-serving cell group.

Optionally, the processing module 902 configures a corresponding relationship between the first indication information and a power ratio of data of the interfering signal to a DMRS of the interfering signal; the processing module 902 determines the power ratio of the data of the interfering signal and the DMRS of the interfering signal according to the correspondence between the first indication information and the power ratio of the data of the interfering signal and the DMRS of the interfering signal.

Those skilled in the art will also appreciate that the various illustrative logical blocks and steps (step) set forth in the embodiments of the present application may be implemented in electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.

The techniques described herein may be implemented by various means. For example, these techniques may be implemented in hardware, software, or a combination of hardware and software. For a hardware implementation, the processing units used to perform these techniques at a communication device (e.g., a base station, a terminal, a network entity, or a chip) may be implemented in one or more general-purpose processors, Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Application Specific Integrated Circuits (ASICs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combinations thereof. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

Those of ordinary skill in the art will understand that: the various numbers of the first, second, etc. mentioned in this application are only used for the convenience of description and are not used to limit the scope of the embodiments of this application, but also to indicate the sequence. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one" means one or more. At least two means two or more. "at least one," "any," or similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one (one ) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

The steps of a method or algorithm described in the embodiments herein may be embodied directly in hardware, in a processor executing instructions, or in a combination of the two. The memory may be RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, a memory may be coupled to the processor such that the processor can read information from, and write information to, the memory. Optionally, the memory may also be integrated into the processor. The processor and the memory may be disposed in an ASIC, which may be disposed in the terminal. Alternatively, the processor and the memory may be provided in different components in the terminal.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, 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, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data package center to another website site, computer, server, or data package center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a packet storage device, including a server, a packet center, etc., that incorporates one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others. Combinations of the above should also be included within the scope of computer-readable media.

The same or similar parts between the various embodiments in this specification may be referred to each other. The above-described embodiments of the present application do not limit the scope of the present application.

Claims

1. A method for wireless communication, comprising:

configuring a corresponding relation between the first indication information and the source of the interference signal and one or more of the following parameters of the interference signal: a port of a demodulation reference signal DMRS, a Code Division Multiplexing (CDM) group of the DMRS, a modulation mode, or a power ratio of data of the interference signal to the DMRS of the interference signal; the sources of the interference signals are: a serving cell, a non-serving cell group, a serving cell and a non-serving cell, or a serving cell and a non-serving cell group;

receiving the first indication information;

determining that a demodulation reference signal (DMRS) of an interference signal is related to a serving cell and/or the DMRS of the interference signal is related to a non-serving cell or a non-serving cell group according to the corresponding relation between the first indication information and the source of the interference signal;

determining a scrambling parameter for the DMRS based on a serving cell Identifier (ID), a non-serving cell ID, or a non-serving cell group ID associated with the DMRS.

2. The method of claim 1, wherein the determining that the DMRS of the interfering signal is related to a serving cell based on the first indication information comprises: determining that a scrambling parameter of a DMRS sequence of the interfering signal is related to a serving cell Identifier (ID).

3. The method of claim 1 or 2, wherein the determining that the DMRS of the interfering signal is related to a non-serving cell or a non-serving cell group according to the first indication information comprises: determining that a scrambling parameter of a DMRS sequence of the interfering signal is related to a non-serving cell ID or a non-serving cell group ID.

4. The method according to any one of claims 1-3, further comprising:

determining one or more of the following information according to the first indication information: a port of the DMRS of the interference signal, a code division multiplexing, CDM, group of the DMRS of the interference signal, a modulation scheme of data of the interference signal, or a power ratio of the data of the interference signal to the DMRS of the interference signal.

5. The method of claim 3 or 4, further comprising:

and receiving second indication information, and determining the non-service cell ID or the non-service cell group ID according to the second indication information.

6. The method according to claim 3 or 4, characterized in that the method further comprises:

and receiving a measurement signal, and determining the ID of the non-service cell or the ID of the non-service cell group according to the measurement signal, wherein the measurement signal is a synchronization signal, a synchronization signal block or a channel state information reference signal (CSI-RS).

7. The method of claim 6, further comprising:

and receiving third indication information, and determining the corresponding relation between the measurement signal and the non-service cell ID or the non-service cell group ID according to the third indication information.

8. The method according to any one of claims 4-7, further comprising: the power ratio of the data of the interfering signal to the DMRS of the interfering signal is any one of {0dB, 3dB, 4.77dB }.

9. The method according to any one of claims 4-8, further comprising: the modulation mode of the data of the interference signal is any one of { Quadrature Phase Shift Keying (QPSK),16 Quadrature Amplitude Modulation (QAM),64QAM and 256QAM }.

10. The method according to any one of claims 1-9, further comprising: the first indication information is contained in downlink control information DCI, uplink control information UCI, side link control information SCI, or network control information NCI.

11. A method for wireless communication, comprising:

configuring a corresponding relation between the first indication information and the source of the interference signal and one or more of the following parameters of the interference signal: a port of a demodulation reference signal (DMRS), a Code Division Multiplexing (CDM) group of the DMRS, a modulation mode, or a power ratio of data of the interference signal to the DMRS of the interference signal; the sources of the interference signals are: a serving cell, a non-serving cell group, a serving cell and a non-serving cell, or a serving cell and a non-serving cell group;

sending the first indication information;

the corresponding relation between the first indication information and the source of the interference signal is used for determining that the DMRS of the interference signal is related to a serving cell and/or the DMRS of the interference signal is related to a non-serving cell or a non-serving cell group, and the serving cell identifier ID, the non-serving cell ID or the non-serving cell group ID related to the DMRS are used for determining the scrambling parameters of the DMRS.

12. The method of claim 11, wherein the first indication information is used to indicate the interference signal source and one or more of the following parameters of an interference signal: the demodulation method comprises the steps of demodulating a port of a reference signal DMRS, a Code Division Multiplexing (CDM) group of the DMRS, a modulation mode or a power ratio of data of the interference signal to the DMRS of the interference signal.

13. A communications apparatus, comprising: a processor and a memory for storing a program that, when executed by the processor, causes a communication device to perform the method of any of claims 1-10, or the method of claim 11 or 12.

14. A storage medium having stored thereon a computer program which, when executed by a processor, carries out the method of any one of claims 1-10 or the method of claim 11 or 12.

15. A communication system, comprising: communication device for performing the method of any of claims 1 to 10, and communication device for performing the method of claim 11 or 12.