CN118118920A

CN118118920A - Configuration method of demodulation reference signal and communication device

Info

Publication number: CN118118920A
Application number: CN202211520054.1A
Authority: CN
Inventors: 李力行
Original assignee: Chengdu Huawei Technology Co Ltd
Current assignee: Chengdu Huawei Technology Co Ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2024-05-31

Abstract

The application provides a configuration method and a communication device of demodulation reference signals, which can avoid DMRS pollution between adjacent cell users and improve the accuracy of demodulation of physical channels. The method comprises the following steps: the method comprises the steps that a first cell receives first information, the first information is used for indicating that the quality of a transmission signal between first terminal equipment served by the first cell and a second cell is larger than a set threshold, and the second cell is a neighboring cell of the first cell; the first cell sends configuration information of a first demodulation reference signal (DMRS) to the first terminal equipment according to the first information, the first DMRS configuration information is different from configuration information of a second DMRS corresponding to second terminal equipment served by the second cell, and the quality of a signal received by the first cell from the second terminal equipment is larger than a set threshold.

Description

Configuration method of demodulation reference signal and communication device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method for configuring a demodulation reference signal and a communications device.

Background

In a wireless communication network, demodulation reference signals (demodulation REFERENCE SIGNAL, DMRS) are used for radio channel estimation to support demodulation of physical channels, such as uplink physical shared channel (SHARED CHANNEL, PUSCH) or downlink physical shared channel (physical downlink SHARED CHANNEL, PUSCH).

The serving cell configures DMRS for the terminal device independently, and when DMRS of terminal devices served by adjacent cells are not completely orthogonal, DMRS pollution is caused. DMRS contamination can affect wireless channel estimation, resulting in poor demodulation accuracy of the physical channel.

Disclosure of Invention

The embodiment of the application provides a configuration method and a communication device of demodulation reference signals, which are used for improving the anti-interference capability of a communication system and ensuring the demodulation accuracy of a physical channel.

In a first aspect, an embodiment of the present application provides a method for configuring a demodulation reference signal, including: a first cell receives first information, wherein the first information is used for indicating that the quality of a transmission signal between a first terminal device served by the first cell and a second cell is larger than a set threshold, and the second cell is a neighboring cell of the first cell; and the first cell sends configuration information of a first demodulation reference signal (DMRS) to the first terminal equipment according to the first information, wherein the first DMRS configuration information is different from the configuration information of a second DMRS corresponding to second terminal equipment served by the second cell, and the quality of a signal received by the first cell from the second terminal equipment is larger than the set threshold.

In the design, different DMRS is configured for different terminal equipment with stronger transmission signal quality between the adjacent cells and the non-serving cells, so that the DMRS configuration of the terminal equipment is completely orthogonal, the pollution of the DMRS is avoided, the pilot interference between users in the adjacent cells can be reduced, the anti-interference capability of a communication system is improved, and the demodulation accuracy of a physical channel is ensured.

In one possible design, a first cell may receive the first information from the first terminal device; wherein the first information is used for indicating that the quality of the signal from the second cell received by the first terminal device is greater than the set threshold. In another possible design, a first cell may receive the first information from the second cell; wherein the first information is used for indicating that the quality of the signal from the first terminal device received by the second cell is greater than the set threshold. The embodiment of the application supports two modes of reporting the terminal equipment or interaction between adjacent cells, and is convenient for the service cell to flexibly determine the quality condition of the transmission signals between the terminal equipment and the adjacent cells, thereby judging whether the terminal equipment causes interference to users of the adjacent cells.

In one possible design, the first DMRS configuration information is different from configuration information of a second DMRS corresponding to a second terminal device served by the second cell, including: the scrambling code sequence of the first DMRS is the same as the scrambling code sequence of the second DMRS, and the time-frequency resource of the first DMRS is different from the time-frequency resource of the second DMRS; or the scrambling code sequence of the first DMRS is the same as the scrambling code sequence of the second DMRS, the time-frequency resource of the first DMRS is the same as the time-frequency resource of the second DMRS, and the orthogonal code division multiple access resource of the first DMRS is different from the orthogonal code division multiple access resource of the second DMRS. In the design, aiming at the terminal equipment with stronger quality of transmission signals between each cell serving in the adjacent cells and the adjacent cells, the same DMRS scrambling sequence is configured, so that the DMRS of the terminal equipment is completely orthogonal, the pollution of the DMRS can be avoided, and the pilot interference between users in the adjacent cells is reduced.

In one possible design, a signal overlap area exists between the first cell and the second cell, and the first terminal device and the second terminal device served by the first cell are both located in the signal overlap area. The same DMRS scrambling sequence is configured for different terminal devices in a signal overlapping region between adjacent cells, so that the complete orthogonality of the DMRS of the terminal devices served by the different cells can be realized, the pollution of the DMRS can be avoided, and the pilot interference between adjacent cell users is reduced.

In one possible design, the first cell may also send configuration information of the third DMRS to the third terminal device; wherein, the third terminal equipment does not communicate with the second cell, or the quality of the transmission signal between the third terminal equipment and the second cell is smaller than or equal to the set threshold; the configuration information of the first DMRS is different from the configuration information of the third DMRS. Alternatively, it may be understood that the third terminal device is located in a non-signal overlapping region or simply a non-overlapping region in the first cell. Configuring nothing for terminal devices in overlapping and non-overlapping areas of the same cell

With the same DMRS, the complete orthogonality of the DMRS between the non-overlapping region and the overlapping region can be realized, and the signal interference of the terminal equipment in the adjacent region in the overlapping region to the terminal equipment in the non-overlapping region of the cell can be reduced, so that the demodulation accuracy of the physical channel can be improved.

In one possible design, the configuration information of the first DMRS is different from the configuration information of the third DMRS, including: the time-frequency resource of the first DMRS is different from the time-frequency resource of the third DMRS; and the scrambling sequence of the first DMRS is the same as or different from the scrambling sequence of the third DMRS. By the design, the complete orthogonality of the DMRS between the non-overlapped area and the overlapped area in the same cell can be realized.

In one possible design, the configuration information of the first DMRS includes a scrambling sequence of the first DMRS, information of a time-frequency resource of the first DMRS, and information of an orthogonal code division multiple access resource of the first DMRS.

In a second aspect, an embodiment of the present application provides a method for configuring a demodulation reference signal, including: the method comprises the steps that a first terminal device receives configuration information of a first demodulation reference signal (DMRS) from a first cell; the quality of transmission signals between the first terminal equipment and a second cell is larger than a set threshold, the second cell is a neighboring cell of the first cell, and the configuration information of the first DMRS is different from the configuration information of a second DMRS corresponding to second terminal equipment served by the second cell; and the first terminal equipment sends the first DMRS according to the configuration information of the first DMRS.

In one possible design, the first terminal device may further send first information to the first cell, where the first information is used to indicate that the quality of the signal received by the first terminal device from the second cell is greater than the set threshold.

In one possible design, the first DMRS configuration information is different from configuration information of a second DMRS corresponding to a second terminal device served by the second cell, including: the scrambling code sequence of the first DMRS is the same as the scrambling code sequence of the second DMRS, and the time-frequency resource of the first DMRS is different from the time-frequency resource of the second DMRS; or the scrambling code sequence of the first DMRS is the same as the scrambling code sequence of the second DMRS, the time-frequency resource of the first DMRS is the same as the time-frequency resource of the second DMRS, and the orthogonal code division multiple access resource of the first DMRS is different from the orthogonal code division multiple access resource of the second DMRS.

In one possible design, the configuration information of the first DMRS is different from the configuration information of a third DMRS corresponding to a third terminal device served by the first cell; and the third terminal equipment does not communicate with the second cell, or the quality of the transmission signal between the third terminal equipment and the second cell is smaller than or equal to the set threshold value.

In one possible design, the configuration information of the first DMRS is different from the configuration information of a third DMRS corresponding to a third terminal device served by the first cell, including: the time-frequency resource of the first DMRS is different from the time-frequency resource of the third DMRS; and the scrambling sequence of the first DMRS is the same as or different from the scrambling sequence of the third DMRS.

In a third aspect, an embodiment of the present application provides a communication device, where the communication device may be a first cell, or may be a device, a module, a chip, or the like in the first cell, or may be a device that can be used in a matching manner with the first cell. In one design, the communication device may include modules corresponding to the methods/operations/steps/actions described in the first aspect, where the modules may be hardware circuits, software, or a combination of hardware circuits and software. In one design, the communication device may include a processing module and a communication module.

The communication module is configured to receive first information, where the first information is used to indicate that quality of a transmission signal between a first terminal device served by the first cell and a second cell is greater than a set threshold, and the second cell is a neighboring cell of the first cell. And the processing module is used for sending configuration information of a first demodulation reference signal (DMRS) to the first terminal equipment through the communication module according to the first information, wherein the first DMRS configuration information is different from the configuration information of a second DMRS corresponding to second terminal equipment served by the second cell, and the quality of a signal received by the first cell from the second terminal equipment is larger than the set threshold value.

In one possible design, the communication module is specifically configured to receive the first information from the first terminal device; wherein the first information is used for indicating that the quality of the signal from the second cell received by the first terminal device is greater than the set threshold. In another possible design, the communication module is specifically configured to receive the first information from the second cell; wherein the first information is used for indicating that the quality of the signal from the first terminal device received by the second cell is greater than the set threshold.

In one possible design, there is a signal overlap region between the first cell and the second cell, where a first terminal device served by the first cell is located in the signal overlap region, and a second terminal device served by the first cell is located in the signal overlap region.

In one possible design, the processing module is further configured to send, through the communication module, configuration information of a third DMRS to a third terminal device; wherein, the third terminal equipment does not communicate with the second cell, or the quality of the transmission signal between the third terminal equipment and the second cell is smaller than or equal to the set threshold; the configuration information of the first DMRS is different from the configuration information of the third DMRS. Alternatively, it may be understood that the third terminal device is located in a non-signal overlapping region or simply a non-overlapping region in the first cell.

In one possible design, the configuration information of the first DMRS is different from the configuration information of the third DMRS, including: the time-frequency resource of the first DMRS is different from the time-frequency resource of the third DMRS; and the scrambling sequence of the first DMRS is the same as or different from the scrambling sequence of the third DMRS.

In a fourth aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus may be a first terminal device, or may be an apparatus, a module, a chip, or the like in the first terminal device, or may be an apparatus that can be used in a matching manner with the first terminal device. In one design, the communication device may include modules corresponding to the methods/operations/steps/actions described in the second aspect, where the modules may be hardware circuits, software, or a combination of hardware circuits and software. In one design, the communication device may include a processing module and a communication module.

A communication module, configured to receive configuration information of a first demodulation reference signal DMRS from a first cell; the quality of the transmission signal between the first terminal device and the second cell is greater than a set threshold, the second cell is a neighboring cell of the first cell, and the configuration information of the first DMRS is different from the configuration information of a second DMRS corresponding to a second terminal device served by the second cell. And the processing module is used for sending the first DMRS through the communication module according to the configuration information of the first DMRS.

In one possible design, the communication module is further configured to send first information to the first cell, where the first information is used to indicate that the quality of the signal received by the first terminal device from the second cell is greater than the set threshold.

In a fifth aspect, an embodiment of the present application provides a communication device, including a processor, configured to implement the method described in the first aspect. The processor is coupled to a memory for storing instructions and data, and the processor, when executing the instructions stored in the memory, may implement the method described in the first aspect. Optionally, the communication device may further include a memory; the communication apparatus may also include a communication interface for the apparatus to communicate with other devices, which may be, for example, a transceiver, circuit, bus, module, pin, or other type of communication interface.

In one possible arrangement, the communication means comprises a memory for storing instructions; and the communication interface is used for receiving first information, the first information is used for indicating that the quality of a transmission signal between first terminal equipment served by the first cell and a second cell is larger than a set threshold, and the second cell is a neighboring cell of the first cell. And the processor is used for sending configuration information of a first demodulation reference signal (DMRS) to the first terminal equipment by utilizing the communication interface according to the first information, wherein the first DMRS configuration information is different from the configuration information of a second DMRS corresponding to second terminal equipment served by the second cell, and the quality of a signal received by the first cell from the second terminal equipment is larger than the set threshold value.

In a sixth aspect, an embodiment of the present application provides a communications device, including a processor configured to implement the method described in the second aspect. The processor is coupled to a memory for storing instructions and data, and the processor, when executing the instructions stored in the memory, is capable of implementing the method described in the second aspect. Optionally, the communication device may further include a memory; the communication apparatus may also include a communication interface for the apparatus to communicate with other devices, which may be, for example, a transceiver, circuit, bus, module, pin, or other type of communication interface.

A communication interface, configured to receive configuration information of a first demodulation reference signal DMRS from a first cell; the quality of the transmission signal between the first terminal device and the second cell is greater than a set threshold, the second cell is a neighboring cell of the first cell, and the configuration information of the first DMRS is different from the configuration information of a second DMRS corresponding to a second terminal device served by the second cell. And the processor is used for transmitting the first DMRS by utilizing the communication interface according to the configuration information of the first DMRS.

In a seventh aspect, an embodiment of the present application provides a communication system comprising a communication device as described in the third or fifth aspect; and a communication device as described in the fourth or sixth aspect.

In an eighth aspect, embodiments of the present application further provide a computer program which, when run on a computer, causes the computer to perform the method provided in any one of the first to second aspects above.

In a ninth aspect, embodiments of the present application also provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method provided in any one of the first to second aspects above.

In a tenth aspect, embodiments of the present application also provide a computer readable storage medium having stored therein a computer program or instructions which, when run on a computer, cause the computer to perform the method provided in any one of the first to second aspects above.

In an eleventh aspect, embodiments of the present application further provide a chip for reading a computer program stored in a memory, performing the method provided in any of the first to second aspects, or comprising circuitry for performing the method provided in any of the first to second aspects.

In a twelfth aspect, an embodiment of the present application further provides a chip system, where the chip system includes a processor, and the processor is configured to support the apparatus to implement the method provided in any one of the first aspect to the second aspect. In one possible design, the system-on-chip further includes a memory for storing programs and data necessary for the device. The chip system may be formed of a chip or may include a chip and other discrete devices.

Effects of the solutions provided in any of the above second to twelfth aspects, reference may be made to the corresponding description in the first aspect.

Drawings

Fig. 1 is a schematic diagram of a communication system;

fig. 2 is a flow chart of a method for configuring a demodulation reference signal according to an embodiment of the present application;

Fig. 3 is a schematic diagram of adjacent cell allocation;

FIG. 4 is a schematic diagram illustrating the division of overlapping regions and non-overlapping regions according to an embodiment of the present application;

fig. 5A to fig. 8B are schematic diagrams of DMRS patterns on time-frequency resources according to an embodiment of the present application;

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

Fig. 10 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

Embodiments of the present application refer to at least one (item), indicating one (item) or more (items), as follows. Plural (items) means two (items) or more than two (items). "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. In addition, it should be understood that although the terms first, second, etc. may be used in describing various objects in embodiments of the application, these objects should not be limited to these terms. These terms are only used to distinguish one object from another.

The terms "comprising" and "having" and any variations thereof, as used in the following description of embodiments of the application, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may optionally include other steps or elements not listed or inherent to such process, method, article, or apparatus. It should be noted that, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any method or design described herein as "exemplary" or "such as" in embodiments of the application should not be construed as preferred or advantageous over other methods or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

The techniques provided by embodiments of the present application may be applied to various communication systems, for example, the communication system may be a third generation (3th generation,3G) communication system (e.g., universal mobile telecommunications system (universal mobile telecommunication system, UMTS)), a fourth generation (4th generation,4G) communication system (e.g., long term evolution (long term evolution, LTE) system), a fifth generation (5th generation,5G) communication system, worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) or wireless local area network (wireless local area network, WLAN) system, or a converged system of multiple systems, or a future communication system, such as a sixth generation (6th generation,6G) communication system, etc. Among other things, the 5G communication system may also be referred to as a New Radio (NR) system.

One network element in a communication system may send signals to or receive signals from another network element. Wherein the signal may comprise information or data or the like; the network element may also be referred to as an entity, a network entity, a device, a communication module, a node, a communication node, etc., which are described in the embodiments of the present application by taking the network element as an example. For example, the communication system may comprise at least one terminal device and at least one network device. The signal sending network element may be a network device, and the signal receiving network element may be a terminal device; or the sending network element of the signal may be a terminal device, and the receiving network element of the signal may be a network device. It should be understood that if the communication system includes a plurality of terminal devices, the plurality of terminal devices may also signal each other, that is, the transmitting network element of the signal and the receiving network element of the signal may be terminal devices.

Referring to fig. 1, a communication system 100 is illustrated, the communication system 100 comprising, as an example, a network device 110 and two terminal devices, namely a terminal device 120 and a terminal device 130. At least one of terminal device 120 and terminal device 130 may transmit uplink data to network device 110, and network device 110 may receive the uplink data. The network device may transmit downstream data to at least one of the terminal device 120 and the terminal device 130.

The terminal device and the network device according to fig. 1 will be described in detail.

(1) Terminal equipment

A terminal device, also called a terminal, user Equipment (UE), mobile Station (MS), mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user. The terminal device may communicate with one or more core network devices via a network device. The terminal device includes a handheld device having a wireless connection function, other processing devices connected to a wireless modem, or an in-vehicle device, etc. The terminal device may be a portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile device. Examples of some terminal devices are: personal communication services (personal communication service, PCS) phones, cordless phones, session initiation protocol (session initiation protocol, SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal DIGITAL ASSISTANT, PDA), wireless network cameras, mobile phones (mobile phone), tablet computers, laptop computers, palmtop computers, mobile internet devices (mobile INTERNET DEVICE, MID), wearable devices such as smart watches, virtual Reality (VR) devices, augmented reality (augmented reality, AR) devices, wireless terminals in industrial control (industrial control), terminals in internet of vehicles systems, wireless terminals in unmanned (SELF DRIVING), wireless terminals in smart grid (SMART GRID), wireless terminals in transportation security (transportation safety), wireless terminals in smart cities (SMART CITY) such as smart oilers, terminal devices on high-speed rails, and wireless terminals in smart home (smart home) such as smart speakers, smart coffee machines, smart printers, etc.

In the embodiment of the present application, the communication device for implementing the function of the terminal device may be a terminal device, or may be a terminal device having a terminal portion function, or may be a device capable of supporting the terminal device to implement the function, for example, a chip system, and the device may be installed in the terminal device. In the embodiment of the application, the chip system can be composed of chips, and can also comprise chips and other discrete devices. In the technical solution provided in the embodiment of the present application, a description will be given taking, as an example, that a communication device for implementing a terminal device function is a terminal device or a UE.

(2) Network equipment

The network device may be a Base Station (BS), which may also be referred to as AN access network device, AN Access Node (AN), a radio access node (radio access node, RAN). The network device may be connected to a core network (such as a core network of LTE or a core network of 5G, etc.), and the network device may provide radio access services for the terminal device. Examples of some network devices include, but are not limited to, at least one of: next generation node B (gNB) in 5G, network equipment in an open radio access network (open radio access network, O-RAN), evolved node B (eNB), radio network controller (radio network controller, RNC), node B (node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (e.g., home evolved nodeB, or home node B, HNB), transceiver point (TRANSMITTING AND RECEIVING point, TRP), transmission point (TRANSMITTING POINT, TP), and/or mobile switching center, etc.; or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, or a network device in a future evolved public land mobile network (public land mobile network, PLMN), etc.

A network device may comprise one or more cells through which a terminal device may access the network device, through which the network device may communicate with the terminal device, which may be understood as a serving cell of the terminal device, which is located within the coverage area of the serving cell. When a network device comprises a cell, the network device may also be considered as a cell.

In the embodiment of the present application, the communication device for implementing the function of the network device may be a network device, or may be a device having a function of a network device part, or may be a device capable of supporting the network device to implement the function. Such as a system-on-a-chip, the apparatus may be installed in a network device. In the embodiment of the application, the chip system can be composed of chips, and can also comprise chips and other discrete devices. In the technical solution provided in the embodiment of the present application, a description will be given by taking a network device as an example of a communication device for implementing a function of the network device.

It should be understood that the number and types of the respective devices in the communication system shown in fig. 1 are only illustrative, and the embodiments of the present application are not limited thereto, and more terminal devices, more network devices, other network elements, for example, core network devices, and/or network management devices such as operation and maintenance management (operation administration AND MAINTENANCE, OAM) devices may be further included in the communication system in practical applications.

The embodiment of the application relates to configuration of demodulation reference signals (DMRS). The network device configures a DMRS or DMRS port for uplink channel estimation for the terminal device through the cell. If the serving cell sends configuration information of the DMRS to the terminal device, the configuration information of the DMRS may include a scrambling code sequence of the DMRS and a time-frequency resource of the DMRS. The time-frequency resources of the DMRS include time-domain resources and frequency-domain resources for transmitting the DMRS, the time-frequency resources of the DMRS may be represented by a DMRS pattern, the DMRS pattern indicates time-domain resources (e.g., in units of symbols) and frequency-domain resources (e.g., in units of subcarriers) available for transmitting the DMRS in the time-frequency resources of a specific size, in the embodiment of the present application, available pattern bits in the DMRS pattern indicate the time-domain resources and the frequency-domain resources available for transmitting the DMRS, and unavailable pattern bits in the DMRS pattern may be understood as null bits or time-domain resources and frequency-domain resources not used for transmitting the DMRS. Optionally, the configuration information of the DMRS may further include code domain resources of the DMRS, for example, orthogonal code division multiple access resources. The terminal equipment can send the DMRS to the network equipment on the time-frequency resource of the DMRS by utilizing the corresponding DMRS scrambling sequence according to the configuration information of the DMRS; and the network equipment carries out uplink channel estimation and PUSCH demodulation according to the received DMRS.

A cell of a network device may configure a plurality of DMRSs to satisfy at least one of time division multiplexing, frequency division multiplexing, code division multiplexing to support single user multiple input multiple output (SU-MIMO) transmission and multiple user multiple input multiple output (multiple user multiple-input and multiple-output, MU-MIMO) transmission.

There is one of a relationship between different DMRSs, whether perfectly orthogonal, pseudo-orthogonal, or non-orthogonal, for example, for two DMRSs such as DMRS-1 and DMRS-2, it can be appreciated that: when the DMRS-1 and the DMRS-2 are allocated with different time domain resources and/or frequency domain resources, the DMRS-1 and the DMRS-2 are completely orthogonal; when the DMRS-1 and the DMRS-2 are allocated with the same time domain and frequency domain resources, the same DMRS scrambling sequence is allocated, and different orthogonal code division multiple access resources are allocated, the DMRS-1 and the DMRS-2 are completely orthogonal; when the DMRS-1 and the DMRS-2 are allocated with the same time domain resource and frequency domain resource and are allocated with different DMRS scrambling sequences, the DMRS-1 and the DMRS-2 are pseudo-orthogonal; when the DMRS-1 and the DMRS-2 allocate the same time domain resource and frequency domain resource, and allocate the same DMRS scrambling sequence, and allocate the same orthogonal code division multiple access resource, the DMRS-1 and the DMRS-2 are not orthogonal. The strength of mutual interference between different DMRSs depends on the relationship between the different DMRSs, such as the interference strength of non-orthogonal correspondence > the interference strength of pseudo-orthogonal correspondence > the interference strength of perfect orthogonal correspondence.

In the related art, the configuration modes of the DMRS generally include the following several modes:

In a first mode, different cells configure different DMRS scrambling sequences for terminal devices served by the cells, the same cell configures the same DMRS scrambling sequence for different terminal devices served by the same cell, and different MU-MIMO users in the same cell use different DMRS resources through time division, frequency division and code division multiplexing. In such a design, terminal devices in a certain cell close to other cells may cause stronger interference to terminal devices in other cells, which affects communication performance of other cells, for example, reduces demodulation accuracy of physical channels.

Mode two: because different terminal devices in the same cell use the same DMRS scrambling sequence, DMRS resources acquired by time division, frequency division or code division multiplexing are still limited. Different DMRS scrambling sequences are configured for different terminal devices served by the same cell, namely, the number of the DMRS scrambling sequences is increased, so that the DMRS resources can be increased. However, since the DMRS scrambling sequences are pseudo-random sequences with low cross-correlation, different DMRS scrambling sequences are used, and the DMRS multiplexing time domain or frequency domain resources are not completely orthogonal. Therefore, when different DMRS scrambling sequences are used in the same cell, the interference among the DMRS in one cell is increased compared with the mode that the DMRS which are originally completely orthogonal in the same cell are changed into the non-completely orthogonal. Mode three: in a coordinated multipoint (coordinated multi point, coMP) transmission scenario, different cells in a plurality of CoMP cells configure DMRS time-frequency resources with the same DMRS scrambling sequence and different DMRS scrambling sequences for respective served terminal devices, and although interference among the CoMP cells is reduced, the use of the same DMRS scrambling sequence among the CoMP cells reduces DMRS resources of time division, frequency division or code division multiplexing. The non-CoMP cell users may be interfered by CoMP cell users close to each other, and similarly, coMP cell users may also be interfered by non-CoMP cell users close to each other, which affects the communication performance of the cell, such as reducing the demodulation accuracy of the physical channel.

Based on this, the embodiment of the application provides a configuration method of demodulation reference signals, which introduces consideration of signal interference between terminal devices with adjacent cells close to each other, and configures DMRS for each served terminal device by cooperation among multiple cells, so that the DMRS of the terminal devices with adjacent cells close to each other are completely orthogonal, thereby avoiding the influence of DMRS pollution on wireless channel estimation and improving the demodulation accuracy of physical channels. It may be understood that, in the embodiment of the present application, the neighboring cells may refer to cells with neighboring coverage areas under the same network device, or cells with neighboring coverage areas under different network devices.

As illustrated in fig. 2, the method for configuring a demodulation reference signal according to the embodiment of the present application mainly includes the following procedures.

S201, the first cell receives the first information.

The first information is used to indicate that a quality of a transmission signal between a first terminal device served by the first cell and the second cell is greater than a set threshold. The second cell is a neighboring cell of the first cell, where the first cell may have one or more neighboring cells, and the second cell may be understood as any one of the neighboring cells of the first cell.

In an alternative embodiment, the first cell may receive first information from the first terminal device, the first information being used to indicate that the signal quality received by the first terminal device from the second cell is greater than a set threshold, which may be preconfigured. For example, the first information includes a signal quality received by the first terminal device from the second cell, and the first cell determines that the signal quality is greater than the set threshold; as another example, the first information includes identification information of the first terminal device and a first value, which may be 0 or 1, the first value indicating that the signal quality received by the first terminal device from the second cell is greater than a set threshold. Alternatively, the signal received by the first terminal device from the second cell may be a downlink reference signal, e.g. a synchronization signal block (synchronization signal block, SSB).

In another alternative embodiment, the first cell may receive first information from the second cell, where the first information is used to indicate that the signal quality received by the second cell from the first terminal device is greater than a set threshold, where the set threshold may be preconfigured. For example, the first information includes a signal quality received by the second cell from the first terminal device, and the first cell determines that the signal quality is greater than the set threshold; as another example, the first information includes identification information of the second cell and a first value, which may be 0 or 1, the first value indicating that the quality of the signal received by the second cell from the first terminal device is greater than a set threshold. Alternatively, the signal received by the second cell from the first terminal device may be an uplink reference signal, for example, a channel Sounding Reference Signal (SRS) REFERENCE SIGNAL.

As an example, S201 in fig. 2 illustrates that the first terminal device transmits first information to the first cell, and the first cell receives the first information from the first terminal device.

Optionally, the set threshold for measuring the quality of the uplink signal received by the second cell and the set threshold for measuring the quality of the downlink channel received by the first terminal device may be the same or different, which is not limited by the embodiment of the present application.

S202, the second cell receives the second information.

The second information is used for indicating that the quality of a transmission signal between the second terminal equipment served by the second cell and the first cell is larger than a set threshold. The first cell is a neighboring cell of the second cell, the second cell may have one or more neighboring cells, and the first cell may be understood as any one of a plurality of neighboring cells of the second cell.

The step may be implemented with reference to S201, for example, the second information received by the second cell may be from the second terminal device or may be from the first cell, which is not limited in the embodiment of the present application. As an example, S202 in fig. 2 illustrates that the first cell transmits second information to the second cell, and the second cell receives the second information from the first cell.

As an example, fig. 3 illustrates 3 neighboring cells, a first cell being adjacent to a second cell and a third cell being adjacent to the first cell and the third cell, and a third cell being adjacent to the first cell and the second cell.

S203, the first cell sends configuration information of a first demodulation reference signal (DMRS) to the first terminal equipment according to the first information; and the second cell sends configuration information of the second DMRS to the second terminal equipment according to the second information.

The configuration information of the first DMRS is different from the configuration information of the second DMRS. In an alternative embodiment, multiple neighboring cells may cooperate to configure DMRS for respective served terminal devices. For example, the first cell and the second cell may negotiate to configure different DMRS for the first terminal device and the second terminal device. In another alternative embodiment, a management device may uniformly configure that the DMRS of the first terminal device is different from the DMRS of the second terminal device.

It will be appreciated that the first terminal device represents a terminal device, of the terminal devices served by the first cell, for which the quality of the transmission signal with the second cell is greater than a set threshold, and that the number of first terminal devices may be one or more. The second terminal device represents a terminal device, the quality of the transmission signal between the terminal device served by the second cell and the first cell is greater than a set threshold value, and the number of the second terminal devices may be one or more.

Optionally, for a certain cell, generally, the quality of a transmission signal between a terminal device near to a neighboring cell and the neighboring cell in the cell is greater than a set threshold, that is, the distance between a first terminal device served by a first cell and a coverage area of a second cell is closer, and the distance between a second terminal device served by the second cell and the coverage area of the first cell is closer. Based on this, it can be understood that there is a signal overlap region between two adjacent cells. As an example, fig. 4 illustrates signal overlap areas between every two adjacent cells on the basis of fig. 3, for example, the signal overlap area between the first cell and the second cell is a first overlap area, the signal overlap area between the first cell and the third cell is a second overlap area, and the signal overlap area between the second cell and the third cell is a third overlap area. Taking the two adjacent cells as a first cell and a second cell as an example, the first overlapping region comprises a partial coverage area of the first cell and a partial coverage area of the second cell, and the quality of transmission signals between terminal equipment in the partial coverage area of the first cell and the second cell is greater than a set threshold, namely the partial coverage area of the first cell comprises one or more first terminal equipment; the quality of the transmission signal between the terminal equipment in the partial coverage of the second cell and the first cell is greater than a set threshold, and the partial coverage of the second cell comprises one or more second terminal equipment. The foregoing configuration of different DMRS for the first terminal device and the second terminal device may alternatively be understood or described as: different DMRS are configured for terminal equipment served by different cells in the first overlapping region, the first cell sends configuration information of the first DMRS to the terminal equipment served by the first cell in the first overlapping region, and the second cell sends configuration information of the second DMRS to the terminal equipment served by the second cell in the first overlapping region.

For example, the configuration information of the first DMRS may include a scrambling sequence of the first DMRS and time-frequency resources of the first DMRS, and the configuration information of the second DMRS may include information of a scrambling sequence of the second DMRS and time-frequency resources of the second DMRS. Optionally, the configuration information of the first DMRS may further include information of orthogonal code division multiple access resources of the first DMRS, and the configuration information of the second DMRS may further include information of orthogonal code division multiple access resources of the second DMRS. The configuration information of the first DMRS is different from the configuration information of the second DMRS, and may be one of the following two cases.

Case one: the scrambling code sequence of the first DMRS is the same as the scrambling code sequence of the second DMRS, and the time-frequency resource of the first DMRS is different from the time-frequency resource of the second DMRS.

And a second case: the scrambling code sequence of the first DMRS is the same as the scrambling code sequence of the second DMRS, the time-frequency resource of the first DMRS is the same as the time-frequency resource of the second DMRS, and the orthogonal code division multiple access resource of the first DMRS is different from the orthogonal code division multiple access resource of the second DMRS.

Alternatively, multiple candidate sequences of the DMRS scrambling sequence and multiple candidate resources of the DMRS time-frequency resource may be predefined. The same candidate sequence may be selected from the plurality of candidate sequences as the scrambling sequence of the first DMRS and the scrambling sequence of the second DMRS, the same candidate resource may be selected from the plurality of candidate resources as the time-frequency resource of the first DMRS and the time-frequency resource of the first DMRS, or two different candidate resources may be selected from the plurality of candidate resources as the time-frequency resource of the first DMRS and the time-frequency resource of the first DMRS. It can be understood that when a plurality of first terminal devices exist in the first overlapping region, different orthogonal code division multiple access resources are used for transmitting DMRS between the plurality of first terminal devices, i.e. code division multiplexing is realized; and when a plurality of second terminal devices exist in the first overlapping region, different orthogonal code division multiple access resources are used for transmitting the DMRS between the plurality of second terminal devices, namely code division multiplexing is realized.

For example, the serving cell may configure, by using higher layer parameters, multiple candidate sequences of the DMRS scrambling sequence to its served terminal device, and further activate or indicate one of the multiple candidate sequences by using downlink control information (downlink control information, DCI). For example, the first cell configures two candidate scrambling sequences to the first terminal device through scramblingID and scramblingID1 in the higher layer parameter DMRS-UplinkConfig: transformPrecodingDisabled, and further carries one of the candidate scrambling sequences in the DCI format 0_0 as the scrambling sequence of the first DMRS, and indicates the first terminal device.

S204, the first terminal equipment sends the first DMRS according to the configuration information of the first DMRS.

The first terminal device may transmit the first DMRS on time-frequency resources of the first DMRS using a scrambling sequence of the first DMRS. It can be understood that the number of the first terminal devices is plural, that is, when the first overlapping region is described in S203 that there are plural first terminal devices, the plural first terminal devices transmit DMRS using different orthogonal code division multiple access resources, that is, code division multiplexing is implemented.

S205, the second terminal equipment sends the second DMRS according to the configuration information of the second DMRS.

The second terminal device may transmit the second DMRS on time-frequency resources of the second DMRS using the scrambling sequence of the second DMRS. It can be understood that the number of the second terminal devices is plural, that is, when the second terminal devices exist in the first overlapping region in S203, the plurality of second terminal devices transmit DMRS using different orthogonal code division multiple access resources, that is, code division multiplexing is implemented.

In the above embodiment, the uplink interference of the terminal device with stronger transmission signal quality between the cell and the neighboring cell to the neighboring cell is considered, different DMRS are configured for different cell users in the signal overlapping region between the neighboring cells, so that the complete orthogonality of the configuration of the DMRS between the neighboring cells can be realized, the pilot interference between the neighboring cell users is reduced, that is, the signal detection capability and the interference suppression capability of the network device to the uplink signal are improved. The pilot interference reduction can improve the estimation accuracy of the network device to the signal channel and the interference channel, thereby improving the demodulation accuracy and the uplink rate of the physical channel.

In addition, optionally, it may be further designed that configuration information of a third DMRS corresponding to a third terminal device served by the first cell is different from configuration information of a first DMRS corresponding to the first terminal device. Wherein no communication is performed between the third terminal device and the second cell, or the quality of the transmission signal between the third terminal device and the second cell is less than or equal to the aforementioned set threshold. The third terminal device is located further from the coverage of the second cell than the first terminal device. The second cell is any neighboring cell of the first cell, and corresponds to the definition of the signal overlapping region, it can be understood that the third terminal device is located in a non-overlapping region within the coverage area of the first cell, where the non-overlapping region includes one or more third terminal devices served by the first cell, and does not include any terminal device served by the neighboring cell of the first cell.

For example, the configuration information of the first DMRS is different from the configuration information of the third DMRS, and may include that the time-frequency resource of the first DMRS is different from the time-frequency resource of the third DMRS. However, there is no limitation on the DRMS scrambling sequence, i.e., the scrambling sequence of the first DMRS and the scrambling sequence of the third DMRS may be the same or different. Optionally, the method illustrated in fig. 2 may further include the following steps S206 to S207.

S206, the first cell sends configuration information of a third demodulation reference signal (DMRS) to the third terminal equipment.

The configuration information of the third DMRS may include a scrambling code sequence of the third DMRS and information of a time-frequency resource of the third DMRS. Optionally, the configuration information of the third DMRS may further include information of orthogonal code division multiple access resources of the third DMRS.

Alternatively, based on the multiple candidate sequences and the multiple candidate resources described in S203, the first cell may select one candidate sequence from the multiple candidate sequences as the scrambling sequence of the third DMRS, and select one time-frequency resource from the multiple candidate resources as the time-frequency resource of the third DMRS.

And S207, the third terminal equipment sends the third DMRS according to the configuration information of the third DMRS.

The third terminal device may transmit the third DMRS on time-frequency resources of the third DMRS using the scrambling sequence of the third DMRS. It can be understood that the number of the third terminal devices is multiple, that is, when there are multiple third terminal devices in the non-overlapping area of the first cell, the multiple third terminal devices use different orthogonal code division multiple access resources to send DMRS, that is, implement code division multiplexing.

In the above embodiment, different DMRS are configured for the overlapping region and the terminal device in the non-overlapping region of the same cell, so that complete orthogonality of the DMRS between the non-overlapping region and the overlapping region can be achieved, and signal interference of the terminal device in the adjacent region in the overlapping region to the terminal device in the non-overlapping region of the cell can be reduced, thereby improving demodulation accuracy of the physical channel.

For convenience of implementation, taking the overlap/non-overlap division illustrated in fig. 4 as an example, two configurations schemes are provided below in the embodiments of the present application, and DMRS configurations in each overlap/non-overlap region in fig. 4 are illustrated.

Configuration scheme one:

a1, the allocation method of the scrambling code sequence for the DMRS comprises the following steps:

The method comprises the steps of allocating a DMRS scrambling sequence 1 for terminal equipment in a non-overlapping region of a first cell, allocating a DMRS scrambling sequence 2 for terminal equipment in a non-overlapping region of a second cell, allocating a DMRS scrambling sequence 3 for terminal equipment in a non-overlapping region of a third cell, allocating the DMRS scrambling sequence 1 for terminal equipment in a first overlapping region between the first cell and the second cell, allocating the DMRS scrambling sequence 3 for terminal equipment in a second overlapping region between the first cell and the third cell, and allocating the DMRS scrambling sequence 2 for terminal equipment in a third overlapping region between the second cell and the third cell. Corresponding to the method described in fig. 3, it may be understood that the scrambling code sequence of the first DMRS, the scrambling code sequence of the second DMRS, and the scrambling code sequence of the third DMRS are identical, and DMRS scrambling code sequence 1 may be understood as an example of the foregoing scrambling code sequences of the first DMRS, the second DMRS, and the third DMRS.

A2, the allocation mode of the time-frequency resource of the DMRS comprises the following steps:

Time-frequency resources 1 are allocated to terminal devices in the non-overlapping region of the first cell, time-frequency resources 2 are allocated to terminal devices in the non-overlapping region of the second cell, time-frequency resources 3 are allocated to terminal devices in the non-overlapping region of the third cell, time-frequency resources 3 are allocated to terminal devices in the first overlapping region between the first cell and the second cell, time-frequency resources 2 are allocated to terminal devices in the second overlapping region between the first cell and the third cell, and time-frequency resources 1 are allocated to terminal devices in the third overlapping region between the second cell and the third cell. Corresponding to the method described in fig. 3, it may be understood that the time-frequency resources of the first DMRS and the time-frequency resources of the second DMRS are the same, for example, are both time-frequency resources 3, and the first terminal device and the second terminal device in the first overlapping region use the DMRS scrambling sequence 1 to send the DMRS on the time-frequency resources 3 through different orthogonal code division multiple access resources, that is, realize code division multiplexing under the condition that the DMRS scrambling sequence and the time-frequency resources are the same. And the time-frequency resource of the third DMRS is time-frequency resource 1, and the time-frequency resource of the third DMRS is different from the time-frequency resource of the first DMRS, so that time division multiplexing and/or frequency division multiplexing of the DMRS between the non-overlapping region and the overlapping region in the same cell can be realized.

In the design, the interference between adjacent cells can be reduced by using the same scrambling sequence by part of users of different cells in the overlapping area between the adjacent cells, and the other part of users of different cells (such as terminal equipment which is served by a first cell and is positioned in the first overlapping area and a second overlapping area) use different DMRS scrambling sequences and different DMRS time-frequency resources, so that the total distribution amount of the DMRS time-frequency resources between the cells is ensured, the communication problem caused by limited or less DMRS time-frequency resources is avoided, and the communication performance of the cells can be ensured while the demodulation accuracy of a physical channel is improved.

In an alternative embodiment, the candidate DMRS patterns corresponding to the time-frequency resource 1, the time-frequency resource 2, and the time-frequency resource 3 may be preconfigured. For example, the time-frequency domain resources that can be allocated in the DMRS period include 1 symbol and 12 subcarriers, fig. 5A illustrates six candidate DMRS pattern sets, where each candidate DMRS pattern set includes a DMRS pattern corresponding to time-frequency resource 1, a DMRS pattern corresponding to time-frequency resource 2, and a DMRS pattern corresponding to time-frequency resource 3. For example, the time-frequency domain resource that can be allocated by the DMRS period includes 2 symbols and 12 subcarriers, fig. 5B illustrates six candidate DMRS pattern sets, where each candidate DMRS pattern set includes a DMRS pattern corresponding to time-frequency resource 1, a DMRS pattern corresponding to time-frequency resource 2, and a DMRS pattern corresponding to time-frequency resource 3.

In another alternative embodiment, DRMS patterns corresponding to different overlapping regions/non-overlapping regions may also be preconfigured. For example, the time-frequency domain resources that can be allocated by the period of DMRS include 1 symbol and 12 subcarriers, fig. 6A illustrates a DMRS pattern corresponding to a non-overlapping region in a first cell, a DMRS pattern corresponding to a non-overlapping region in a second cell, a DMRS pattern corresponding to a non-overlapping region in a third cell, a DMRS pattern corresponding to a first overlapping region between the first cell and the second cell, a DMRS pattern corresponding to a second overlapping region between the first cell and the third cell, and a DMRS pattern corresponding to a third overlapping region between the second cell and the third cell. For another example, the time-frequency domain resource that can be allocated by the DMRS period includes 2 symbols and 12 subcarriers, fig. 6B illustrates a DMRS pattern corresponding to a non-overlapping region in a first cell, a DMRS pattern corresponding to a non-overlapping region in a second cell, a DMRS pattern corresponding to a non-overlapping region in a third cell, a DMRS pattern corresponding to a first overlapping region between the first cell and the second cell, a DMRS pattern corresponding to a second overlapping region between the first cell and the third cell, and a DMRS pattern corresponding to a third overlapping region between the second cell and the third cell.

Configuration scheme II:

b1, the allocation method of the scrambling code sequence to the DMRS comprises:

B2, the allocation mode of the time-frequency resource of the DMRS comprises the following steps:

The terminal devices in the non-overlapping region are divided into time-frequency resources 4, such as time-frequency resources 4 are allocated for the terminal devices in the non-overlapping region of the first cell, the non-overlapping region of the second cell, and the non-overlapping region of the third cell. Corresponding to the scheme described in fig. 3, it can be understood that the time-frequency resource of the third DMRS is time-frequency resource 4. The terminal devices in the overlapping region are divided into time-frequency resources 5, e.g. the terminal devices in the aforementioned first overlapping region, second overlapping region and third overlapping region are allocated with time-frequency resources 5. Corresponding to the scheme described in fig. 3, it can be understood that the time-frequency resources of the first DMRS and the time-frequency resources of the second DMRS are both time-frequency resources 5. It is also understood that, in conjunction with B1 and B2, for a plurality of terminal devices allocated the same DMRS scrambling sequence and the same DMRS time-frequency resource, DMRS may be transmitted by different orthogonal code division multiple access resources, i.e., by means of code division multiplexing.

In an alternative embodiment, the candidate DMRS patterns corresponding to the time-frequency resource 1, the time-frequency resource 2, and the time-frequency resource 3 may be preconfigured. For example, the time-frequency domain resources that can be allocated by the DMRS period include 1 symbol and 12 subcarriers, fig. 7A illustrates two candidate DMRS pattern sets, where each candidate DMRS pattern set includes a DMRS pattern corresponding to time-frequency resource 4 and a DMRS pattern corresponding to time-frequency resource 5. For another example, the time-frequency domain resource that can be allocated by the DMRS period includes 2 symbols and 12 subcarriers, fig. 7B illustrates two candidate DMRS pattern sets, where each candidate DMRS pattern set includes a DMRS pattern corresponding to time-frequency resource 4 and a DMRS pattern corresponding to time-frequency resource 5.

In another alternative embodiment, the DRMS corresponding to the overlapping region and the DRMS pattern corresponding to the non-overlapping region may be preconfigured. For example, the time-frequency domain resource to which the period of DMRS is allocable includes 1 symbol and 12 subcarriers, and fig. 8A illustrates a DMRS pattern corresponding to the non-overlapping region and a DMRS pattern corresponding to the overlapping region. For another example, the time-frequency domain resource with the allocable DMRS period includes 2 symbols and 12 subcarriers, and fig. 8B illustrates a DMRS pattern corresponding to the non-overlapping region and a DMRS pattern corresponding to the overlapping region.

Based on the same concept, referring to fig. 9, an embodiment of the present application provides a communication apparatus 900, the communication apparatus 900 including a processing module 901 and a communication module 902. The communication device 900 may be a terminal device (for example, a first terminal device, a second terminal device, or a third terminal device), or may be a communication device that is applied to or used in cooperation with a terminal device and is capable of implementing a communication method executed at the terminal device side; alternatively, the communication device 900 may be a cell on the network device side, such as the first cell or the second cell, or may be a communication device that is applied to or used in match with a cell on the network device side, and is capable of implementing a communication method executed by the cell on the network device side.

The communication module may also be referred to as a transceiver module, a transceiver, or a transceiver device. A processing module may also be called a processor, a processing board, a processing unit, a processing device, or the like. Optionally, the communication module is configured to perform the sending operation and the receiving operation on the terminal device side or the network device side in the above method, where a device for implementing a receiving function in the communication module may be regarded as a receiving unit, and a device for implementing a sending function in the communication module may be regarded as a sending unit, that is, the communication module includes the receiving unit and the sending unit.

When the communication apparatus 900 is applied to the first terminal device, the second terminal device, or the third terminal device, the processing module 901 may be configured to implement a processing function of the first terminal device, the second terminal device, or the third terminal device in the example shown in fig. 2, and the communication module 902 may be configured to implement a transmitting/receiving function of the first terminal device, the second terminal device, or the third terminal device in the example shown in fig. 2. Alternatively, the communication device may be understood with reference to the third aspect of the invention and possible designs in the third aspect.

When the communication apparatus 900 is applied to the network device side, the processing module 901 may be configured to implement the processing function of the first cell or the second cell in the example shown in fig. 2, and the communication module 902 may be configured to implement the transceiving function of the first cell or the second cell in the example shown in fig. 2. Alternatively, the communication device may be understood with reference to the fourth aspect of the invention and possible designs in the fourth aspect.

It should also be noted that in one possible embodiment, the communication module and/or the processing module may be implemented by a virtual module, for example, the processing module may be implemented by a software functional unit or a virtual device, and the communication module may be implemented by a software functional unit or a virtual device. In another possible design, the processing module or the communication module may also be implemented by a physical device, for example, if the device is implemented using a chip/chip circuit, and the communication module may be an input/output circuit and/or a communication interface, and perform an input operation (corresponding to the foregoing receiving operation) and an output operation (corresponding to the foregoing transmitting operation); the processing module is an integrated processor or microprocessor or integrated circuit.

The division of the modules in the embodiment of the application is schematic, only one logic function is divided, and other division modes can be adopted in actual implementation. In addition, each functional module in each example of the embodiment of the present application may be integrated in one processor, or may exist alone physically, or two or more modules may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules.

Based on the same technical concept, the embodiment of the application also provides a communication device 1000. For example, the communication device 1000 may be a chip or a system-on-chip. Alternatively, the chip system in the embodiment of the present application may be formed by a chip, and may also include a chip and other discrete devices.

The communications apparatus 1000 can be configured to implement the functionality of any of the network elements of the communications system described in the previous examples. The communications apparatus 1000 can include at least one processor 1010. Optionally, the processor 1010 is coupled to a memory, which may be located within the apparatus; alternatively, the memory may be integrated with the processor; alternatively, the memory may be located outside the device. For example, the communications apparatus 1000 can also include at least one memory 1020. Memory 1020 holds the computer programs, computer programs or instructions and/or data necessary to implement any of the examples described above; the processor 1010 may execute a computer program stored in the memory 1020 to perform the method of any of the examples described above.

Communication device 1000 may also include a communication interface 1030, and communication device 1000 may communicate information with other devices via communication interface 1030. The communication interface 1030 may be, for example, a transceiver, circuit, bus, module, pin, or other type of communication interface. When the communication device 1000 is a chip-type device or circuit, the communication interface 1030 in the communication device 1000 may be an input/output circuit, or may input information (or called receiving information) and output information (or called transmitting information), and the processor may be an integrated processor or a microprocessor or an integrated circuit or a logic circuit, and the processor may determine the output information according to the input information.

The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be in electrical, mechanical, or other forms for information interaction between the devices, units, or modules. The processor 1010 may cooperate with a memory 1020 and a communication interface 1030. The specific connection medium between the processor 1010, the memory 1020, and the communication interface 1030 is not limited in this embodiment.

Optionally, referring to fig. 10, the processor 1010, the memory 1020, and the communication interface 1030 are connected to each other by a bus 1040. The bus 1040 may be a peripheral component interconnect (PERIPHERAL COMPONENT INTERCONNECT, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus, among others. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 10, but not only one bus or one type of bus.

In the embodiment of the present application, the processor may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic blocks of the application embodiments in the embodiment of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method according to the embodiments of the present application may be directly implemented as a hardware processor or implemented by a combination of hardware and software modules in a processor.

In the embodiment of the present application, the memory may be a nonvolatile memory, such as a hard disk (HARD DISK DRIVE, HDD) or a solid-state disk (SSD), or may be a volatile memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory in embodiments of the present application may also be circuitry or any other device capable of performing memory functions for storing program instructions and/or data.

In one possible implementation manner, the communication apparatus 1000 may be applied to a cell on the network device side (such as the first cell or the second cell), and the specific communication apparatus 1000 may be a cell on the network device side, or may be a cell capable of supporting the network device side, and implement the functions of the cells in any of the examples mentioned above. Memory 1020 holds computer programs (or instructions) and/or data that implement the functions of the network device-side cells in any of the examples described above. The processor 1010 may execute a computer program stored by the memory 1020 to perform the methods performed by the cell in any of the examples described above. The communication interface in the communication device 1000 may be used to interact with a first terminal device, send information to the first terminal device or receive information from the first terminal device, as the communication device is applied to a first cell. If the communication device is applied to a second cell, the communication interface in the communication device 1000 may be used to interact with a second terminal device, send information to the second terminal device, or receive information from the second terminal device.

In another possible implementation manner, the communication apparatus 1000 may be applied to a terminal device (such as a first terminal device, a second terminal device, or a third terminal device), and the specific communication apparatus 1000 may be a terminal device, or may be an apparatus capable of supporting a terminal device, and implementing a function of a terminal device in any of the foregoing examples. Memory 1020 holds computer programs (or instructions) and/or data that implement the functions of the terminal device in any of the examples described above. The processor 1010 may execute a computer program stored by the memory 1020 to perform the methods performed by the terminal device in any of the examples described above. The communication interface in the communication device 1000 may be used to interact with a first cell, send information to the first cell or receive information from the first cell, as the communication device is applied to a first terminal device. The communication interface in the communication device 1000 may be used to interact with a second cell, to send information to or receive information from the second cell, as the communication device is applied to a second terminal device.

Since the communication apparatus 1000 provided in this example may be applied to a network device, the method performed by the cell on the network device side described above is completed, or applied to a terminal device, the method performed by the terminal device is completed. Therefore, reference may be made to the above method examples for the technical effects that can be obtained, and they will not be described herein.

The technical scheme provided by the embodiment of the application can be realized completely or partially 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. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a terminal device, a network device, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (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 data storage device such as a server, data center, etc. that contains an integration of 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., digital video disc (digital video disc, DVD)), or a semiconductor medium, etc.

In the embodiments of the present application, the examples may refer to each other without logical contradiction, for example, methods and/or terms between method embodiments may refer to each other, for example, functions and/or terms between apparatus examples and method examples may refer to each other.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present application without departing from the scope of the embodiments of the application. Thus, the embodiments of the present application are intended to include such modifications and alterations insofar as they come within the scope of the embodiments of the application as claimed and the equivalents thereof.

Claims

1. A method for configuring a demodulation reference signal, which is applied to a first cell, includes:

Receiving first information, wherein the first information is used for indicating that the quality of a transmission signal between first terminal equipment served by the first cell and a second cell is greater than a set threshold, and the second cell is a neighboring cell of the first cell;

And sending configuration information of a first demodulation reference signal (DMRS) to the first terminal equipment according to the first information, wherein the first DMRS configuration information is different from the configuration information of a second DMRS corresponding to second terminal equipment served by the second cell, and the quality of a signal received by the first cell from the second terminal equipment is larger than the set threshold.

2. The method of claim 1, wherein the receiving the first information comprises:

Receiving the first information from the first terminal device; wherein the first information is used for indicating that the quality of the signal from the second cell received by the first terminal device is greater than the set threshold.

3. The method of claim 1, wherein the receiving the first information comprises:

receiving the first information from the second cell; wherein the first information is used for indicating that the quality of the signal from the first terminal device received by the second cell is greater than the set threshold.

4. The method of any of claims 1-3, wherein the first DMRS configuration information is different from configuration information of a second DMRS corresponding to a second terminal device served by the second cell, comprising:

the scrambling code sequence of the first DMRS is the same as the scrambling code sequence of the second DMRS, and the time-frequency resource of the first DMRS is different from the time-frequency resource of the second DMRS; or alternatively

The scrambling code sequence of the first DMRS is the same as the scrambling code sequence of the second DMRS, the time-frequency resource of the first DMRS is the same as the time-frequency resource of the second DMRS, and the orthogonal code division multiple access resource of the first DMRS is different from the orthogonal code division multiple access resource of the second DMRS.

5. The method of any one of claims 1-4, further comprising:

Transmitting configuration information of a third DMRS to a third terminal device; wherein, the third terminal equipment does not communicate with the second cell, or the quality of the transmission signal between the third terminal equipment and the second cell is smaller than or equal to the set threshold; the configuration information of the first DMRS is different from the configuration information of the third DMRS.

6. The method of claim 5, wherein the configuration information for the first DMRS is different from the configuration information for the third DMRS, comprising:

the time-frequency resource of the first DMRS is different from the time-frequency resource of the third DMRS; and is also provided with

The scrambling sequence of the first DMRS is the same as or different from the scrambling sequence of the third DMRS.

7. The method of any of claims 1-6, wherein the configuration information for the first DMRS includes a scrambling sequence for the first DMRS, information for time-frequency resources for the first DMRS, and information for orthogonal code division multiple access resources for the first DMRS.

8. A method for configuring a demodulation reference signal, which is applied to a first terminal device, includes:

Receiving configuration information of a first demodulation reference signal (DMRS) from a first cell; the quality of transmission signals between the first terminal equipment and a second cell is larger than a set threshold, the second cell is a neighboring cell of the first cell, and the configuration information of the first DMRS is different from the configuration information of a second DMRS corresponding to second terminal equipment served by the second cell;

and sending the first DMRS according to the configuration information of the first DMRS.

9. The method as recited in claim 8, further comprising:

And sending first information to the first cell, wherein the first information is used for indicating that the quality of the signal from the second cell received by the first terminal equipment is larger than the set threshold value.

10. The method of claim 8 or 9, wherein the first DMRS configuration information is different from configuration information of a second DMRS corresponding to a second terminal device served by the second cell, comprising:

11. The method of any of claims 8-10, wherein configuration information of the first DMRS is different from configuration information of a third DMRS corresponding to a third terminal device served by the first cell; and the third terminal equipment does not communicate with the second cell, or the quality of the transmission signal between the third terminal equipment and the second cell is smaller than or equal to the set threshold value.

12. The method of claim 11, wherein the configuration information for the first DMRS is different from the configuration information for a third DMRS corresponding to a third terminal device served by the first cell, comprising:

13. The method of any of claims 8-12, wherein the configuration information for the first DMRS includes a scrambling sequence for the first DMRS, information for time-frequency resources for the first DMRS, and information for orthogonal code division multiple access resources for the first DMRS.

14. A communication device for implementing the method of any of claims 1-7; or for implementing the method of any one of claims 8-13.

15. A communication device, comprising:

A processor coupled to a memory for invoking computer program instructions stored in the memory to perform the method of any of claims 1-7 or to perform the method of any of claims 8-13.

16. A computer readable storage medium having instructions stored thereon which, when run on a computer, cause the computer to perform the method of any of claims 1-7 or perform the method of any of claims 8-13.

17. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1-7 or to perform the method of any one of claims 8-13.