Resource configuration method and communication device

Abstract

Provided are a resource allocation method and a communication device, the method comprising: acquiring a first resource, the first resource being associated with at least one first reference signal port, each of the at least one first reference signal port corresponding to a first UE, the first resource being used for interference measurement of the first UE, the first resource being associated with the at least one first reference signal port; the first resource and a first shared channel have an association relationship, and the first reference signal and the first shared channel have an association relationship; and transmitting the first shared channel. The first resource is transmitted in the physical uplink shared channel or the physical downlink shared channel, so that the first UE performs interference measurement, the interference measurement precision is improved, the accuracy of data demodulation in an actual system is enhanced, and the overall capacity of the system is further improved.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of communications, and more specifically, to a resource configuration method and a communication device. Background Art

[0002] A demodulation reference signal (DMRS) is mainly used to estimate an equivalent channel matrix and an equivalent interference matrix experienced by a data channel (eg, PDSCH) or a control channel (eg, PDCCH), so as to be used for data detection and demodulation.

[0003] DMRS can accurately estimate the equivalent channel experienced by the data signal, but the ability to estimate the interference signal received by the data signal is relatively weak. This insufficient ability to estimate interference will directly lead to a decrease in the ability to demodulate the data signal. How to improve the ability to measure interference signals has become an urgent problem to be solved. Summary of the invention

[0004] The embodiments of the present application provide a resource configuration method and a communication device, which enable a terminal device to perform interference measurement by configuring an interference measurement resource, thereby improving the accuracy of the interference measurement result and enhancing the demodulation performance of the data signal.

[0005] In a first aspect, a method for resource configuration is provided. The method may be executed by a terminal device or a network device, or may be executed by a chip or circuit configured in the terminal device or the network device, and the present application does not limit this.

[0006] The method includes: acquiring a first resource, the first resource is associated with at least one first reference signal port, each of the at least one first reference signal port corresponds to a first UE, the first resource is used for interference measurement of the first UE, the first resource is associated with a first shared channel, and the first reference signal is associated with the first shared channel; and transmitting the first shared channel.

[0007] It can be understood that the network device configures one or more first reference signal ports for the first UE, and the first UE receives the corresponding first reference signal and channel estimation based on the one or more first reference signal ports. In other words, the one or more first reference signal ports are associated with the PDSCH or PUSCH of the first UE. The first resource is part of the time-frequency resources in the first shared channel, and the part of the time-frequency resources is used by the first UE to perform interference measurement of other UEs. The time-frequency resource position of the first resource can be indicated by the associated first reference signal port.

[0008] It should be noted that the “transmission” in the present application includes sending downlink information and receiving uplink information. For example, transmitting the first shared channel includes sending a physical downlink shared channel and receiving a physical uplink shared channel.

[0009] Based on the above scheme, a first resource for the first UE is defined, and the first resource has a mapping relationship with a first reference signal port configured for the first UE. By transmitting the first resource in a physical uplink shared channel or a physical downlink shared channel, the first UE performs interference measurement, thereby improving the accuracy of interference measurement, enhancing the accuracy of data demodulation in the actual system, and thereby improving the overall capacity of the system.

[0010] In combination with the first aspect, in some implementations of the first aspect, a data signal corresponding to the first UE is not transmitted on the first resource.

[0011] According to the technical solution, a data signal corresponding to the first UE is not transmitted on the first resource, and the first UE can determine that the reference signal received on the first resource is an interference measurement result within the cell and between cells.

[0012] In combination with the first aspect, in some implementations of the first aspect, a second reference signal occupies the first resource, the second reference signal is associated with the first shared channel, and the method further includes: transmitting the second reference signal on the first resource.

[0013] According to this technical solution, the time-frequency position corresponding to the first resource is occupied by the second reference signal, so the second reference signal can be transmitted without transmitting the data signal of the first UE.

[0014] In combination with the first aspect, in certain implementations of the first aspect, when the method is used in a network device, the network device sends first indication information, and the first indication information is used to indicate a first port group to a terminal device, the first port group includes at least one first reference signal port, and the first resource is associated with a first reference signal port in the first port group.

[0015] In combination with the first aspect, in certain implementations of the first aspect, when the method is used in a terminal device, the terminal device receives first indication information, and the first indication information is used to indicate a first port group to the terminal device, the first port group includes at least one first reference signal port, and the first resource is associated with a first reference signal port in the first port group.

[0016] In combination with the first aspect, in some implementations of the first aspect, when the method is used in a network device, the network device sends second indication information, where the second indication information is used to indicate an index of a first reference signal port in the first port group.

[0017] In combination with the first aspect, in certain implementations of the first aspect, when the method is used in a terminal device, the terminal device receives second indication information and determines a first reference signal port associated with the first resource according to the second indication information.

[0018] In combination with the first aspect, in some implementations of the first aspect, a first reference signal port associated with the first resource is a first reference signal port with the smallest port number in the first port group.

[0019] In combination with the first aspect, in some implementations of the first aspect, the time-frequency resources included in the first resource are different from the time-frequency resources corresponding to a first reference signal port associated with the first resource.

[0020] In combination with the first aspect, in certain implementations of the first aspect, the first resource corresponds to one or more time domain units in the first shared channel, and the indexes of the one or more time domain units are associated with the indexes of one or more time domain units corresponding to the first reference signal in the first shared channel and the first offset.

[0021] In this technical solution, the time domain unit index corresponding to the first resource is determined according to the time domain unit index of the associated first reference signal, thereby determining the time domain position corresponding to the first resource in the first shared channel.

[0022] In combination with the first aspect, in some implementations of the first aspect, the first resource corresponds to one or more time domain unit indexes in the first shared channel as l. nx , the first reference signal corresponds to one or more time domain units in the first shared channel with an index of l x , where x is the value of the index size, the first offset is d1, and the time domain unit index corresponding to the first resource and the time domain unit index corresponding to the first reference signal and the first offset satisfy the following relationship:

[0023] l nx = l x +d1.

[0024] In combination with the first aspect, in some implementations of the first aspect, the first time domain unit index corresponding to the first resource is l. n0 , the first time domain unit index corresponding to the first reference signal is l0,

[0025] The first time domain unit index corresponding to the first resource, the first time domain unit index corresponding to the first reference signal, and the first offset satisfy the following relationship:

[0026] l n0 =l0+d1.

[0027] In combination with the first aspect, in some implementations of the first aspect, it is assumed that the first resource corresponds to one or more time domain unit indexes in the first shared channel as {l n0 ,l n1 ,l n2 ,…l nx}, the first reference signal corresponds to one or more time domain unit indexes in the first shared channel {l0,l1,l2,…l n}, the x time domain unit indices corresponding to the first resource and the x time domain unit indices and the first offset corresponding to the first reference signal all satisfy the same mapping relationship, for example, l n0 =l0+d1,l n1 =l1+d1,l n2 =l2+d1,…,l nx = l x +d1.

[0028] In combination with the first aspect, in some implementations of the first aspect, when the time domain length corresponding to the first reference signal is 1, the first offset is 1.

[0029] In combination with the first aspect, in some implementations of the first aspect, when the time domain length corresponding to the first reference signal is 2, the first offset is 2.

[0030] In combination with the first aspect, in certain implementations of the first aspect, when the first resource corresponds to multiple time domain units in the first shared channel, intervals between the multiple time domain units are the same.

[0031] In combination with the first aspect, in some implementations of the first aspect, the number of time domain units corresponding to the first resource in the first shared channel is positively correlated with the number of continuous time domain units in the first shared channel.

[0032] In combination with the first aspect, in certain implementations of the first aspect, the position of the last time domain unit occupied by the first resource in the first shared channel is before the Nth time domain unit in the continuous time domain units in the first shared channel, N is less than the maximum index M of the continuous time domain units in the first shared channel, and N and M are positive integers.

[0033] In this technical solution, the position of the last time domain unit occupied by the first resource in the first shared channel is limited, ensuring that the time domain unit of the first resource is not the last time domain unit of the first shared channel, ensuring that all time domain units corresponding to the first resource are used for interference measurement, and ensuring the accuracy of the interference measurement results.

[0034] In combination with the first aspect, in certain implementations of the first aspect, the first resource corresponds to one or more frequency domain units in the first shared channel, and an index of each of the one or more frequency domain units is associated with a second offset.

[0035] In combination with the first aspect, in some implementations of the first aspect, the frequency domain unit index corresponding to the first resource is K RB,nx , the frequency domain unit index corresponding to the first shared channel is K nx , the second offset is d2, the first frequency domain unit index corresponding to the first resource and the first frequency domain unit index corresponding to the first shared channel and the second offset satisfy the following relationship:

[0036] K RB,n0 =K n0 +d2.

[0037] In combination with the first aspect, in some implementations of the first aspect, an index of each frequency domain unit in the one or more frequency domain units is associated with a cell identifier of the first cell.

[0038] In this technical solution, different frequency domain units are associated with different cell identifiers in a cell group for interference measurement, and UEs in different cells can perform interference measurement on other cells through the offset of different frequency domain units.

[0039] In combination with the first aspect, in some implementations of the first aspect, the first shared channel is associated with a first cell, and a cell identifier corresponding to the first cell is C s , the first cell belongs to a first cell group, the first cell group includes P cells, and the cell identifiers corresponding to the cells in the first cell group are (C1, C2, ..., C p ), a first frequency domain unit index corresponding to the first resource, a first frequency domain unit index corresponding to the first shared channel, the second offset, and a cell identifier of the first cell satisfy the following relationship:

[0040] K RB,n0 =K n0 +d2+(s mod P).

[0041] In combination with the first aspect, in certain implementations of the first aspect, when the first resource corresponds to multiple frequency domain units in the first shared channel, intervals between the multiple frequency domain units are the same.

[0042] In combination with the first aspect, in certain implementations of the first aspect, at least one frequency domain unit among the one or more frequency domain units includes one or more subcarriers, and an index of a first subcarrier among the one or more subcarriers is associated with the at least one first reference signal port.

[0043] In this technical solution, the subcarrier index corresponding to the first resource is determined according to the subcarrier index of the associated first reference signal, thereby determining the subcarrier position corresponding to the first resource in the first shared channel.

[0044] In combination with the first aspect, in certain implementations of the first aspect, the subcarrier index of the first resource is associated with a first reference signal port of the associated first resource, and the first subcarrier index is determined based on the first subcarrier index corresponding to the first reference signal and a third offset.

[0045] In combination with the first aspect, in some implementations of the first aspect, the first subcarrier index is f n0 , the subcarrier index corresponding to the first reference signal is f0, the third offset is d3,

[0046] The first subcarrier index, the subcarrier index corresponding to the first reference signal, and the third offset satisfy the following relationship:

[0047] f n0 =f0+d3.

[0048] In combination with the first aspect, in certain implementations of the first aspect, when the first reference signal includes multiple subcarrier indexes, the subcarrier index corresponding to the first reference signal is the minimum subcarrier index among multiple subcarriers corresponding to a first reference signal port associated with the first resource.

[0049] In combination with the first aspect, in certain implementations of the first aspect, the time domain density and frequency domain density of the first resource in the first shared channel are associated with the MCS corresponding to the first shared channel, the time domain density indicates that one first resource is sent per T time domain units, and the frequency domain density indicates that one first resource is sent per F subcarriers.

[0050] In combination with the first aspect, in some implementations of the first aspect, when the method is applied to a network device, the network device sends third indication information, where the third indication information is used to indicate the first resource.

[0051] In combination with the first aspect, in some implementations of the first aspect, when the method is applied to a terminal device, the terminal device receives third indication information, and determines the first resource according to the third indication information.

[0052] In this technical solution, the network device may indicate the corresponding first resource to the terminal device through signaling, so that the terminal device can perform interference measurement.

[0053] In combination with the first aspect, in some implementations of the first aspect, the third indication information is radio resource control signaling or downlink control signaling.

[0054] In this technical solution, the network device can indicate the corresponding first resource to the terminal device through high-layer signaling.

[0055] In combination with the first aspect, in some implementations of the first aspect, the first reference signal is a demodulation reference signal.

[0056] In combination with the first aspect, in some implementations of the first aspect, the time domain unit is an OFDM symbol, and the frequency domain unit is a resource block RB.

[0057] In a second aspect, a communication device is provided, which may be a network device or a terminal device, or a chip or circuit configured in a network device, or a chip or circuit configured in a terminal device, and the present application does not limit this.

[0058] The device includes: a processing unit, used to acquire a first resource, the first resource is associated with at least one first reference signal port, each of the at least one first reference signal port corresponds to a first UE, the first resource is used for interference measurement of the first UE, the first resource is associated with a first shared channel, and the first reference signal is associated with the first shared channel; and a transceiver unit, used to transmit the first shared channel.

[0059] In combination with the second aspect, in some implementations of the second aspect, the transceiver unit is further configured to not transmit a data signal corresponding to the first UE on the first resource.

[0060] In combination with the second aspect, in some implementations of the second aspect, a second reference signal occupies the first resource, the second reference signal is associated with the first shared channel, and the transceiver unit is further used to transmit the second reference signal on the first resource.

[0061] In combination with the second aspect, in certain implementations of the second aspect, the transceiver unit is also used to transmit first indication information, wherein the first indication information is used to indicate a first port group, the first port group includes at least one first reference signal port, and the first resource is associated with a first reference signal port in the first port group.

[0062] In combination with the second aspect, in certain implementations of the second aspect, the transceiver unit is also used to transmit second indication information, wherein the second indication information is used to indicate an index of a first reference signal port in the first port group, and the processing unit is further used to determine a first reference signal port associated with the first resource based on the first indication information.

[0063] In combination with the second aspect, in some implementations of the second aspect, a first reference signal port associated with the first resource is a first reference signal port with the smallest port number in the first port group.

[0064] In combination with the second aspect, in some implementations of the second aspect, the time-frequency resources included in the first resource are different from the time-frequency resources corresponding to a first reference signal port associated with the first resource.

[0065] In combination with the second aspect, in certain implementations of the second aspect, the first resource corresponds to one or more time domain units in the first shared channel, and the indexes of the one or more time domain units are associated with the indexes of one or more time domain units corresponding to the first reference signal in the first shared channel and the first offset.

[0066] In combination with the second aspect, in some implementations of the second aspect, the first resource corresponds to one or more time domain unit indexes in the first shared channel as l. nx , the first reference signal corresponds to one or more time domain units in the first shared channel with an index of l x , where x is the value of the index size, the first offset is d1, and the time domain unit index corresponding to the first resource and the time domain unit index corresponding to the first reference signal and the first offset satisfy the following relationship:

[0067] l nx = l x +d1.

[0068] In conjunction with the second aspect, in some implementations of the second aspect, the first time domain unit index corresponding to the first resource is l. n0 , the first time domain unit index corresponding to the first reference signal is l0, the first time domain unit index corresponding to the first resource, the first time domain unit index corresponding to the first reference signal, and the first offset satisfy the following relationship:

[0069] l n0 =l0+d1.

[0070] In combination with the second aspect, in some implementations of the second aspect, it is assumed that the first resource corresponds to one or more time domain unit indexes in the first shared channel as {l n0 ,l n1 ,l n2 ,…l nx}, the first reference signal corresponds to one or more time domain unit indexes in the first shared channel {l0,l1,l2,…l n}, the x time domain unit indices corresponding to the first resource and the x time domain unit indices and the first offset corresponding to the first reference signal all satisfy the same mapping relationship, for example, l n0 =l0+d1,l n1 =l1+d1,l n2 =l2+d1,…,l nx = l x +d1.

[0071] In combination with the second aspect, in some implementations of the second aspect, when the time domain length corresponding to the first reference signal is 1, the first offset is 1.

[0072] In combination with the second aspect, in some implementations of the second aspect, when the time domain length corresponding to the first reference signal is 2, the first offset is 2.

[0073] In combination with the second aspect, in certain implementations of the second aspect, when the first resource corresponds to multiple time domain units in the first shared channel, intervals between the multiple time domain units are the same.

[0074] In combination with the second aspect, in certain implementations of the second aspect, the number of time domain units in the first shared channel corresponding to the first resource is positively correlated with the number of continuous time domain units in the first shared channel.

[0075] In combination with the second aspect, in certain implementations of the second aspect, the position of the last time domain unit occupied by the first resource in the first shared channel is before the Nth time domain unit in the continuous time domain units in the first shared channel, N is less than the maximum index M of the continuous time domain units in the first shared channel, and N and M are positive integers.

[0076] In combination with the second aspect, in certain implementations of the second aspect, the first resource corresponds to one or more frequency domain units in the first shared channel, and an index of each of the one or more frequency domain units is associated with a cell identifier and a second offset.

[0077] In conjunction with the second aspect, in some implementations of the second aspect, the frequency domain unit index corresponding to the first resource is K RB,nx , the frequency domain unit index corresponding to the first shared channel is K nx , the second offset is d2, the first frequency domain unit index corresponding to the first resource and the first frequency domain unit index corresponding to the first shared channel and the second offset satisfy the following relationship:

[0078] K RB,n0 =K n0 +d2.

[0079] In combination with the second aspect, in some implementations of the second aspect, an index of each frequency domain unit in the one or more frequency domain units is associated with a cell identifier of the first cell.

[0080] In conjunction with the second aspect, in some implementations of the second aspect, the first shared channel is associated with a first cell, and a cell identifier corresponding to the first cell is C s , the first cell belongs to a first cell group, the first cell group includes P cells, and the cell identifiers corresponding to the cells in the first cell group are (C1, C2, ..., C p ), a first frequency domain unit index corresponding to the first resource, a first frequency domain unit index corresponding to the first shared channel, the second offset, and a cell identifier of the first cell satisfy the following relationship:

[0081] K RB,n0 =K n0 +d2+(s mod P).

[0082] In combination with the second aspect, in certain implementations of the second aspect, when the first resource corresponds to multiple frequency domain units in the first shared channel, intervals between the multiple frequency domain units are the same.

[0083] In combination with the second aspect, in certain implementations of the second aspect, at least one frequency domain unit among the one or more frequency domain units includes one or more subcarriers, and an index of a first subcarrier among the one or more subcarriers is associated with the at least one first reference signal port.

[0084] In combination with the second aspect, in certain implementations of the second aspect, the subcarrier index of the first resource is associated with a first reference signal port of the associated first resource, and the first subcarrier index is determined based on the first subcarrier index corresponding to the first reference signal and a third offset.

[0085] In conjunction with the second aspect, in some implementations of the second aspect, the first subcarrier index is f n0 , the subcarrier index corresponding to the first reference signal is f0, the third offset is d3,

[0086] The first subcarrier index, the subcarrier index corresponding to the first reference signal, and the third offset satisfy the following relationship:

[0087] f n0 =f0+d3.

[0088] In combination with the second aspect, in certain implementations of the second aspect, when the first reference signal includes multiple subcarrier indexes, the subcarrier index corresponding to the first reference signal is the minimum subcarrier index among the multiple subcarriers corresponding to a first reference signal port associated with the first resource.

[0089] In combination with the second aspect, in certain implementations of the second aspect, the time domain density and frequency domain density of the first resource in the first shared channel are associated with the MCS corresponding to the first shared channel, the time domain density indicates that one first resource is sent per T time domain units, and the frequency domain density indicates that one first resource is sent per F subcarriers.

[0090] In combination with the second aspect, in some implementations of the second aspect, the transceiver unit is further used to transmit second indication information, where the second indication information is used to indicate the first resource.

[0091] In combination with the second aspect, in some implementations of the second aspect, the second indication information is radio resource control signaling or downlink control signaling.

[0092] In combination with the second aspect, in some implementations of the second aspect, the first reference signal is a demodulation reference signal.

[0093] In combination with the second aspect, in some implementations of the second aspect, the time domain unit is an OFDM symbol, and the frequency domain unit is a resource block RB.

[0094] In a third aspect, a communication device is provided, comprising a processor. The processor is coupled to a memory and can be used to execute instructions in the memory to implement the method in any possible implementation of the first aspect or the second aspect. Exemplarily, the communication device also includes a memory. The communication device also includes a communication interface, and the processor is coupled to the communication interface.

[0095] In one implementation, the communication device is a network device. When the communication device is a network device, the communication interface may be a transceiver, or an input / output interface.

[0096] In another implementation, the communication device is a chip configured in a network device. When the communication device is a chip configured in a network device, the communication interface may be an input / output interface.

[0097] Exemplarily, the transceiver may be a transceiver circuit. The input / output interface may be an input / output circuit.

[0098] In one implementation, the communication device is a terminal device. When the communication device is a terminal device, the communication interface may be a transceiver, or an input / output interface.

[0099] In another implementation, the communication device is a chip configured in a terminal device. When the communication device is a chip configured in a terminal device, the communication interface may be an input / output interface.

[0100] Exemplarily, the transceiver may be a transceiver circuit. The input / output interface may be an input / output circuit.

[0101] In a fourth aspect, a processor is provided, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is used to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any possible implementation of the first aspect or the second aspect.

[0102] In the specific implementation process, the processor can be one or more chips, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a trigger, and various logic circuits. The input signal received by the input circuit can be, for example, but not limited to, received and input by a receiver, and the signal output by the output circuit can be, for example, but not limited to, output to a transmitter and transmitted by the transmitter, and the input circuit and the output circuit can be the same circuit, which is used as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation methods of the processor and various circuits.

[0103] In a fifth aspect, a processing device is provided, comprising a processor and a memory. The processor is used to read instructions stored in the memory, and can receive signals through a receiver and transmit signals through a transmitter to execute the method in any possible implementation of the first aspect or the second aspect.

[0104] Exemplarily, the processor is one or more and the memory is one or more.

[0105] Exemplarily, the memory may be integrated with the processor, or the memory may be arranged separately from the processor.

[0106] In the specific implementation process, the memory can be a non-transitory memory, such as a read-only memory (ROM), which can be integrated with the processor on the same chip or can be set on different chips respectively. The embodiments of the present application do not limit the type of memory and the setting method of the memory and the processor.

[0107] It should be understood that the relevant data interaction process, such as sending indication information, can be a process of outputting indication information from the processor, and receiving capability information can be a process of receiving input capability information from the processor. Specifically, the data output by the processor can be output to the transmitter, and the input data received by the processor can come from the receiver. Among them, the transmitter and the receiver can be collectively referred to as a transceiver.

[0108] The processing device in the fifth aspect may be one or more chips. The processor in the processing device may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated in the processor or located outside the processor and exist independently.

[0109] In a sixth aspect, a computer program product is provided, the computer program product comprising: a computer program (also referred to as code, or instruction), which, when executed, enables a computer to execute a method in any possible implementation of the first aspect or the second aspect.

[0110] In the seventh aspect, a computer-readable storage medium is provided, which stores a computer program (also referred to as code, or instructions) which, when run on a computer, enables the method in any possible implementation of the first aspect or the second aspect to be executed.

[0111] In an eighth aspect, a communication system is provided, comprising at least one terminal device and at least one network device, for executing the method in any possible implementation manner in the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0112] Figure 1 It is a schematic diagram of a communication system to which the method of the embodiment of the present application is applicable.

[0113] Figure 2 It is the reference signal pattern for two configuration types in the current standard.

[0114] Figure 3 This is a schematic diagram of the time-frequency resources and sequence mapping method of R15 DMRS.

[0115] Figure 4 This is a schematic diagram of the time-frequency resources and sequence mapping method after R15 DMRS expansion.

[0116] Figure 5 It is a schematic flowchart of a resource configuration method provided in an embodiment of the present application.

[0117] Figure 6 It is a schematic diagram of a first resource provided in an embodiment of the present application.

[0118] Figure 7 Schematic diagrams of two PDSCH patterns provided in embodiments of the present application.

[0119] Figure 8 Schematic diagrams of two PDSCH patterns provided in embodiments of the present application.

[0120] Fig. 9 This is a schematic diagram of a PDSCH pattern provided in an embodiment of the present application.

[0121] Fig.10 It is a schematic diagram of a first resource provided in an embodiment of the present application.

[0122] Fig.11 It is a schematic flowchart of a resource configuration method provided in an embodiment of the present application.

[0123] Fig.12 It is a schematic diagram of a communication device provided in an embodiment of the present application.

[0124] Fig.13 It is a schematic diagram of another communication device provided in an embodiment of the present application.

[0125] Fig.14 It is a schematic block diagram of a network device according to an embodiment of the present application.

[0126] Fig.15 It is a schematic block diagram of a terminal device according to an embodiment of the present application. DETAILED DESCRIPTION

[0127] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0128] The technical solution of the embodiment of the present application can be applied to various communication systems, for example: thGeneration, 5G) system or new radio (new radio, NR), evolved packet core (evolved packet core, EPC), evolved packet system (evolved packet system, EPS), evolved universal mobile telecommunication system (univeRMal mobile telecommunication system, UMTS) terrestrial radio access network (evolved UMTSterrestrial radio access network, E-UTRAN), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), etc. The technical solution provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system.

[0129] The technical solutions of the embodiments of the present application can also be applied to device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine (M2M) communication, machine type communication (MTC), and Internet of Things (IoT) communication systems or other communication systems.

[0130] The terminal device in the embodiments of the present application can be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.

[0131] The terminal device may be a device that provides voice / data to users, for example, a handheld device or a vehicle-mounted device with a wireless connection function. At present, some terminals may be, for example, mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, wearable devices, terminal devices in 5G networks or future evolved public land mobile communication networks (public land mobile The embodiments of the present application do not limit this.

[0132] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices. Wearable devices may be a general term for devices that are intelligently designed and developed for daily wear using wearable technology, such as glasses, gloves, watches, clothing, and shoes. In other words, a wearable device is a portable device that can be worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include devices that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0133] In addition, in the embodiments of the present application, the terminal device can also be a terminal device in an IoT system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network that interconnects people and machines and things.

[0134] In addition, terminal devices can also include sensors such as smart printers, train detectors, and gas stations. Their main functions include collecting data (part of the terminal equipment), receiving control information and downlink data from network devices, and sending electromagnetic waves to transmit uplink data to network devices.

[0135] The network device in the embodiment of the present application can be a device for communicating with a terminal device. The network device can be a next-generation base station (gNodeB, gNB) in a 5G communication system, a next-generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc., an evolved node B (evolved nodeB, eNB) in an LTE system, a radio network controller (radio network controller, RNC), a node B (node ​​B, NB), a base station controller (base station controller, BSC), a home base station (for example, home evolved NodeB, or home NodeB, HNB), a base band unit (base band unit, BBU), a transmission reception point (transmission reception point, TRP), a transmitting point (transmitting point, TP), a base transceiver station (base transceiver station, BTS), etc.

[0136] In a network structure, the network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node, or a control plane CU node and a user plane CU node, and a RAN device of a DU node. The network device may provide services for a cell, and a terminal device communicates with a base station through the transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell may be a cell corresponding to a base station (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell. The small cell here may include: a metro cell, a micro cell, a pico cell, a femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services. The network device can be a macro base station, a micro base station or an indoor station, a relay node or a donor node, a device that provides wireless communication services to user devices in a V2X communication system, a wireless controller in a cloud radio access network (CRAN) scenario, a relay station, a vehicle-mounted device, a wearable device, and a network device in a future evolution network, etc. The embodiments of the present application do not limit the specific technology and specific form of the network device.

[0137] In an embodiment of the present application, a terminal device or a network device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory). The operating system may be any one or more computer operating systems that implement business processing through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as a browser, an address book, a word processing software, and an instant messaging software. In addition, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application, as long as it can communicate according to the method provided in the embodiment of the present application by running a program that records the code of the method provided in the embodiment of the present application, for example, the execution subject of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in a terminal device or a network device that can call a program and execute the program.

[0138] Figure 1 1 is an exemplary architecture diagram of a communication system 100 applicable to an embodiment of the present application. Figure 1 As shown, the communication system 100 may include at least one network device, such as Figure 1 The communication system 100 may also include at least one terminal device, such as Figure 1 The terminal devices 102 to 107 shown. The terminal devices 102 to 107 may be mobile or fixed. The network device 101 may provide communication coverage for a specific geographical area, and the terminal devices 102 to 107 may be terminal devices located within the coverage area. The network device 101 and one or more of the terminal devices 102 to 107 may communicate via a wireless link.

[0139] Optionally, the terminal devices may communicate directly with each other. For example, the direct communication between the terminal devices may be realized by using device to device (D2D) technology. Figure 1 As shown in , the terminal device 105 can directly communicate with the terminal device 106 and the terminal device 105 can directly communicate with the terminal device 107 using the D2D technology. The terminal device 106 and the terminal device 107 can communicate with the terminal device 105 individually or simultaneously.

[0140] Terminal devices 105 to 107 may also communicate with network device 101 respectively. For example, they may communicate directly with network device 101, such as terminal devices 105 and 106 in the figure may communicate directly with network device 101; or they may communicate indirectly with network device 101, such as terminal device 107 in the figure communicates with network device 101 via terminal device 105.

[0141] Figure 1 Each communication device in the communication system 100 shown in the figure may be configured with multiple antennas. For each communication device, the multiple antennas configured may include at least one transmitting antenna for sending signals and at least one receiving antenna for receiving signals. Therefore, each communication device in the communication system 100 may communicate with each other through MIMO technology.

[0142] It should be understood that Figure 1 This is a simplified schematic diagram for ease of understanding. The communication system 100 may also include other network devices or other terminal devices. Figure 1 Not drawn in.

[0143] To facilitate understanding of the embodiments of the present application, the following first briefly introduces the terms and background involved in the present application.

[0144] 1. Antenna port

[0145] Antenna port is referred to as port. It can be understood as a transmitting antenna recognized by the receiving end, or a transmitting antenna that can be distinguished in space. An antenna port can be configured for each virtual antenna, and each virtual antenna can be a weighted combination of multiple physical antennas. Depending on the signal carried, the antenna port can be divided into a reference signal port and a data port. Among them, the reference signal port can include but is not limited to a DMRS port, a channel state information reference signal (CSI-RS) port, etc.

[0146] This application includes existing ports and newly added ports. Existing ports refer to ports in existing protocols, or ports that support technical solutions in existing protocols; newly added ports refer to ports that can support the technical solutions of this application.

[0147] 2. Time and frequency resources

[0148] In an embodiment of the present application, data or information may be carried by time-frequency resources. The time-frequency resources may include resources in the time domain and resources in the frequency domain. In the time domain, the time-frequency resources may include one or more time domain units (also referred to as time units, time units, etc.); in the frequency domain, the time-frequency resources may include one or more frequency domain units.

[0149] Among them, a time domain unit can be a symbol or several symbols (such as OFDM symbols), or a time slot, or a mini-slot, or a subframe. Among them, a time slot can be composed of 7 or 14 symbols; a mini-slot can include at least one symbol (for example, 2 symbols or 7 symbols or 14 symbols, or any number of symbols less than or equal to 14 symbols); the duration of a subframe in the time domain can be 1 millisecond (ms). It should be understood that the above-mentioned time domain unit sizes listed are only for the convenience of understanding the scheme of the present application, and do not constitute a limitation on the protection scope of the present application. It can be understood that the above-mentioned time domain unit sizes can be other values, and the present application does not limit them.

[0150] A frequency domain unit can be a resource block (RB), a subcarrier, a resource block group (RBG), a predefined subband, a precoding resource block group (PRG), a bandwidth part (BWP), a resource element (RE) (also called a resource unit or resource particle), or a carrier, or a serving cell.

[0151] 3. Demodulation reference signal (DMRS)

[0152] In a new radio (NR) system, DMRS is used for equivalent channel matrix estimation of a data channel, such as a physical uplink share channel (PUSCH) or a control channel, such as a physical downlink control channel (PDCCH), so as to detect and demodulate data on the corresponding channel.

[0153] Taking the data channel PDSCH as an example, DMRS is usually precoded in the same way as the transmitted data signal, so as to ensure that DMRS and the data signal experience the same equivalent channel. Assume that the DMRS vector sent by the transmitter is s, and the data signal vector sent is x. DMRS and the data signal are precoded in the same way (multiplied by the same precoding matrix). The data signal vector y and DMRS vector r received by the receiver can be expressed by formula (1) and formula (2) respectively:

[0154]

[0155]

[0156] in, represents the equivalent channel experienced by the data signal and DMRS, and n represents additive noise. Based on the known DMRS vector s, the receiver can obtain the equivalent channel using channel estimation algorithms such as least square (LS) channel estimation and minimum mean square error (MMSE) channel estimation. The demodulation of the data signal can be completed based on the equivalent channel.

[0157] With the introduction of MIMO technology into wireless communication systems, the transmitter can transmit multi-stream data on the same time-frequency resources, and the receiver can recover all of them. At this time, DMRS is used to estimate the equivalent channel matrix, whose dimension can be N R ×R, where N R represents the number of receiving antennas, and R represents the number of transmission streams (also called the number of transmission layers or spatial layers). Usually, one DMRS port corresponds to one transmission stream, that is, for MIMO transmission with R transmission streams, the number of DMRS ports required is R. In order to ensure the quality of channel estimation, the DMRS ports corresponding to multiple transmission streams are orthogonal ports.

[0158] For a DMRS port, in order to perform channel estimation on different time-frequency resources, multiple DMRS need to be sent on multiple time-frequency resources. Multiple DMRS corresponding to a port correspond to a DMRS sequence. A DMRS sequence includes multiple DMRS sequence elements.

[0159] Taking the DMRS sequence generated by the gold sequence as an example, the DMRS sequence r l (n) n The DMRS sequence elements can be generated by the following formula:

[0160]

[0161] Where c(n) is a pseudo-random sequence, and c(n) can be a gold sequence with a sequence length of 31. For an output length of M PN The sequence c(n), n=0,1,...,M PN -1, can be determined by formula (4):

[0162]

[0163] Among them, N C = 1600, the first m sequence x1(n) can be initialized to x1(0) = 1, x1(n) = 0, n = 1, 2, ..., 30, and the second m sequence x2(n) can be initialized by parameter c init Initialization, c init It can be determined by formula (5):

[0164]

[0165] Wherein, l represents the index value of an OFDM symbol in a time slot; is the number of symbols contained in a time slot; is a time slot index within a system frame; It is an initialization parameter, and its value can be 0 or 1; It can be configured by high-level signaling, which is related to the cell (identifier, ID), and can usually be equal to the cell ID; λ represents the code division multiplexing (code division multiplexing, CDM) group (group) index corresponding to the DMRS port.

[0166] The DMRS sequence corresponding to a DMRS port can be mapped to the corresponding time-frequency resource through the preset time-frequency resource mapping rule. For antenna port p (corresponding to DMRS port p), the mth sequence element r(m) in the corresponding DMRS sequence can be mapped to the index (k, l) according to the mapping rule shown in formula (6) p,μ RE on:

[0167]

[0168] Among them, the index is (k,l) p,μ The RE corresponds to an OFDM symbol with an index of l in a time slot in the time domain and to a subcarrier with an index of k in the frequency domain. To map to index (k,l) p,μ The DMRS modulation symbol corresponding to the DMRS port p on the RE, k′=0,1; n=0,1,...;l′=0,1;Δ is the subcarrier offset factor;type1 and type2 represent the two DMRS configuration types defined in the current NR protocol respectively;μ is the subcarrier spacing; is the index of the starting OFDM symbol occupied by the DMRS modulation symbol or the index of the reference OFDM symbol; is the power scaling factor; w f (k′) is the frequency domain mask element corresponding to the subcarrier with index k′, w t (l′) is the time domain mask element corresponding to the OFDM symbol with index l′; m=2n+k′.

[0169] In the configuration type 1 mapping rule, the DMRS port p corresponds to w f (k′), w t For the values ​​of (l′) and Δ, please refer to Table 1 or Section 6.4.1.1.3 of TS 38.211.

[0170] Table 1

[0171]

[0172] In the configuration type 2 mapping rule, the DMRS port p corresponds to w f (k′), wt (l′), and the value of Δ can be determined according to Table 2.

[0173] Table 2

[0174]

[0175]

[0176] In Table 1 and Table 2, λ represents the index of the CDM group, and the DMRS ports in the same CDM group occupy the same time-frequency resources.

[0177] 4. DMRS configuration type

[0178] Figure 2 Two configuration types of DMRS patterns are shown. Figure 2 REs with different filling patterns represent different CDM groups; P0, P1, ..., P11 represent DMRS port 0 to DMRS port 11; the numbers on the horizontal axis represent the index of a symbol in a time slot, and the numbers on the vertical axis represent the index of a subcarrier in an RB.

[0179] It should be understood that Figure 2 The DMRS occupying symbol 0 and the occupying symbols 0 and 1 are only examples. The symbols occupied by the DMRS in a time slot may also be other symbols, such as occupying symbol 1, or occupying symbols 1 and 2.

[0180] See also Figure 2 (a), for single-symbol DMRS of configuration type 1, up to 4 orthogonal DMRS ports are supported. The 4 DMRS ports are divided into 2 CDM groups (CDM group 0 and CDM group 1), and each CDM group supports up to 2 orthogonal DMRS ports. Among them, CDM group 0 contains DMRS ports P0 and P1, and CDM group 1 contains P2 and P3. Frequency division multiplexing (FDM) is used between CDMgroups (mapped on different frequency domain resources); the DMRS ports contained in the CDM group are mapped on the same time domain resources (resource mapping is performed in a comb-tooth manner in the frequency domain). The reference signals corresponding to the DMRS ports contained in the CDM group are distinguished by an orthogonal cover code (OCC) to ensure the orthogonality of the DMRS ports in the CDM group.

[0181] See also Figure 2(b), dual-symbol DMRS of configuration type 1 supports up to 8 orthogonal DMRS ports. The 8 DMRS ports belong to 2 CDM groups (CDM group 0 and CDM group 1). Among them, CDM group 0 contains P0, P1, P4 and P5; CDM group 1 contains P2, P3, P6 and P7. P0, P1, P4 and P5 are located in the same RE, and resources are mapped in a comb-tooth manner in the frequency domain. Similarly, P2, P3, P6 and P7 are located in the same RE and mapped in a comb-tooth manner on the unoccupied subcarriers of P0, P1, P4 and P5 in the frequency domain. For a DMRS port, the occupied 2 adjacent subcarriers and 2 OFDM symbols correspond to an OCC sequence of length 4 (which can be obtained by referring to Table 1).

[0182] Figure 2 (c) and (d) correspond to the time-frequency resource mapping modes of single-symbol DMRS and double-symbol DMRS of configuration type 2, respectively. Figure 2 As shown in (c), the single-symbol DMRS of configuration type 2 supports up to 6 orthogonal DMRS ports. The 6 DMRS ports belong to 3 CDM groups (CDM group 0, CDM group 1 and CDM group 2). Figure 2 As shown in (d), for dual-symbol DMRS of configuration type 2, up to 12 orthogonal DMRS ports are supported. The 12 DMRS ports belong to 3 CDM groups (CDM group 0, CDM group 1 and CDM group 2). For the sake of brevity, the introduction of CDM groups of configuration type 2 DMRS and the time-frequency resources occupied by each DMRS port is omitted here.

[0183] 5. DMRS port time-frequency resources and sequence mapping

[0184] As the demand for the actual number of scheduled flows in the existing network continues to increase, the currently evolving NR Rel-18 version has expanded the capacity of DMRS ports.

[0185] Figure 3 Schematic diagram of the time-frequency resource and sequence mapping method of R15 DMRS. The expansion method is based on the time-frequency resource and sequence mapping method of R15 DMRS, and the frequency domain mask is doubled. The maximum 8 / 12 port DMRS under Type1 / 2 of R15 is expanded to the maximum 16 / 24 port DMRS under Type1 / 2 of R18. The expanded DMRS port time-frequency resource and sequence mapping method is as follows Figure 4 shown.

[0186] like Figure 3As shown, taking the single symbol Type2 DMRS as an example, the figure shows the subcarrier ID occupied by R15 DMRS and the corresponding port index, and explains the corresponding DMRS mask design method. Taking DMRS ports P0 and P1 (CDM group 0) as an example, the frequency domain subcarriers occupied in one RB are numbered {0, 1, 6, 7}, the mask sequence corresponding to the P0 port is {+1, +1, +1, +1}, and the mask sequence corresponding to the P1 port is {+1, -1, -1, -1}. The P1 port occupies the same time-frequency resources as the P0 port, and is transmitted on the same time-frequency resources as the P0 port through code division orthogonality. The mask sequence here refers to the corresponding frequency domain mask sequence in Table 2.

[0187] like Figure 4 As shown, taking a single symbol Type2 DMRS as an example, the figure shows the subcarrier ID occupied by R18 DMRS and the corresponding port index, and explains the corresponding DMRS mask design method. Here, CDM group 0 (including ports P0, P1, P12, and P13) is taken as an example. Corresponding to the same CDM group, R18 port multiplexes a group of ports (2 ports for single symbol, 4 ports for double symbol) through code division multiplexing in the same time-frequency resources compared with R15 port. The frequency domain subcarrier numbers occupied in one RB are {0, 1, 6, 7}, the mask sequence corresponding to P0 port is {+1, +1, +1, +1}, the mask sequence corresponding to P1 port is {+1, -1, -1, -1}, P12 corresponds to {+1, +j, -1, -j} or {+1, +1, -1, -1}, P13 corresponds to {+1, -j, -1, +j}} or {+1, -1, -1, +1}, where the DMRS corresponding to PUSCH corresponds to or before the mask sequence (with j), and the DMRS corresponding to PDSCH corresponds to or after the mask sequence (without j). The multiplexing mode of other CDM groups is the same as that of CDM group 0. Through this technical means, the total number of DMRS ports reused within the same time-frequency resources can be doubled.

[0188] This expansion method can be naturally extended to single / double symbol, Type 1 / 2 DMRS configuration types through the same sequence and mapping method. The DMRS port and time-frequency resource mapping corresponding to the above expansion method are shown in the following formula (7) and Tables 3-6. Formula (7) is the implementation form of several different possible time-frequency resource mapping formulas for R18 DMRS.

[0189] For FD-OCC capacity expansion, a possible time-frequency resource mapping formula is as follows:

[0190]

[0191] in, p is the index of the DMRS port, μis the subcarrier spacing parameter, is the DMRS port mapped to the RE with index (k, l) p The corresponding DMRS symbol corresponds to the subcarrier with index k in the frequency domain.

[0192] k ′ =0,1,2,3; n=0,1,...;

[0193] j=0,1,...,v-1; Δ is the subcarrier offset factor; type1 and type2 represent the two DMRS configuration types defined in the current NR protocol respectively; is the index of the starting OFDM symbol occupied by the DMRS modulation symbol or the index of the reference OFDM symbol; is the power scaling factor; w f (k′) is the frequency domain mask element corresponding to the subcarrier with index k′, w t (l′) is the time domain mask element corresponding to the OFDM symbol with index l′; Δ is the subcarrier offset factor.

[0194] The DFT sequence corresponding to Scheme 1 is the uplink DMRS time-frequency resource and sequence design adopted by the current R18 standard, and the Walsh sequence corresponding to Scheme 2 is the downlink DMRS time-frequency resource and sequence design adopted by the current R18 standard. The corresponding port number and time-frequency resource mapping formula and the values ​​of the variables in the formula for each port (including the CDM group index and OCC value) are as follows.

[0195] Table 3 is a table of parameter values ​​(type 1R18) corresponding to different DMRS ports of the corresponding DFT sequence.

[0196] Table 3

[0197]

[0198] Table 4 is a table of parameter values ​​(type 2R18) corresponding to different DMRS ports of the corresponding DFT sequence.

[0199] Table 4

[0200]

[0201] Table 5 is a table of parameter values ​​(type 1R18) corresponding to different DMRS ports of the Walsh sequence.

[0202] Table 5

[0203]

[0204]

[0205] Table 6 is a table of parameter values ​​(type 2R18) corresponding to different DMRS ports of the Walsh sequence.

[0206] Table 6

[0207]

[0208] For the maximum 12 DMRS ports supported by the current NR protocol, the maximum number of DMRS ports supported by different DMRS type configurations and maximum length configurations are shown in Table 7 below.

[0209] Table 7

[0210]

[0211] Among them, for type 1 single-symbol DMRS, a maximum of 4 ports are supported; for type 2 single-symbol DMRS, a maximum of 6 ports are supported; for type 1 dual-symbol DMRS, a maximum of 8 ports are supported; for type 2 single-symbol DMRS, a maximum of 12 ports are supported.

[0212] Considering the increase in the upper limit of the number of R18 DMRS ports, for R18 DMRS, the maximum number of DMRS ports supported by different DMRS type configurations and maximum lengths can be shown in Table 8 below.

[0213] Table 8

[0214]

[0215] According to Table 8, for type 1 single-symbol DMRS, a maximum of 8 ports are supported; for type 2 single-symbol DMRS, a maximum of 12 ports are supported; for type 1 dual-symbol DMRS, a maximum of 16 ports are supported; for type 2 single-symbol DMRS, a maximum of 24 ports are supported. At the same time, considering the compatibility of existing technologies, the port number definitions supported by single-symbol DMRS are not arranged in order, and their specific port numbers are determined by the corresponding port numbers in the above-mentioned scheme 1 and scheme 2 tables.

[0216] It should be noted that the port number here is more intended to protect the corresponding sequence / mask and time-frequency resource mapping method. For the PUSCH DMRS port, its port number is the DMRS port number corresponding to the PDSCH - 1000. The maximum of 12 ports in the prior art can be shown in Table 9 below.

[0217] Table 9

[0218]

[0219] The table corresponding to the R18 DMRS port may be as shown in Table 10 below, and the port description is the same as that of PDSCH above.

[0220] Table 10

[0221]

[0222] As for the R18 DMRS enhancement technology direction, according to the above description, in response to the demand for the expansion of the total number of ports, the Walsh sequence enhancement corresponding to Scheme 2 is adopted for the DMRS of PDSCH, and the DFT sequence enhancement corresponding to Scheme 1 is adopted for the DMRS of PUSCH. In addition, since the R18 feature also supports the uplink 8Tx transmit antenna enhancement technology, for PUSCH transmission, compared with the maximum 4 layers supported by R15, it further supports single-user MIMO transmission of up to 8 streams, and its corresponding DMRS port indication is also enhanced accordingly.

[0223] During each data transmission process, the network device needs to inform the terminal device of the allocated antenna port (DMRS port) and the configuration type of DMRS. In this way, the terminal device can receive the DMRS signal and perform the channel estimation process in the corresponding time-frequency resources based on the allocated antenna port and the DMRS symbol generation method and time-frequency resource mapping rules defined in the protocol.

[0224] Currently, the NR protocol defines a method for semi-statically configuring the DMRS type through high-level signaling (e.g., radio resource control (RRC) signaling) and dynamically notifying the allocated DMRS port index through downlink control information (DCI). The details are as follows:

[0225] (1) RRC signaling configuration DMRS configuration type and number of occupied symbols

[0226] Exemplarily, the network device configures the configuration type of DMRS through high-level signaling DMRS-DownlinkConfig, wherein the dmrs-Type field can be used to indicate whether it is type 1 or type 2 DMRS; the maxLength field can be used to indicate whether single-symbol DMRS or dual-symbol DMRS is used. If the maxLength is configured to len2, the DCI can further indicate whether single-symbol DMRS or dual-symbol DMRS is used; if the maxLength field is not configured, single-symbol DMRS is used.

[0227] The DMRS type used is configured through the high-level signaling DMRS-DownlinkConfig. The specific signaling content is as follows (the above line is taken as an example):

[0228]

[0229]

[0230] The specific content configured by the high-layer signaling DMRS-DownlinkConfig is as follows (taking the uplink as an example):

[0231] dmrs-AdditionalPosition:

[0232] Position for additional DM-RS in UL (see TS 38.211

[16] , clause 6.4.1.1.3). If the field is absent, the UE applies the value pos2. See also clause 6.4.1.1.3 for additional constraints on how the network may set this field depending on the setting of other fields.

[0233] dmrs-Type:

[0234] Selection of the DMRS type to be used for UL (see TS 38.211

[16] , clause 6.4.1.1.3). If the field is absent, the UE uses DMRS type 1.

[0235] dmrs-Uplink

[0236] This field indicates whether low PAPR DMRS is used, as specified in TS38.211

[16] , clause 6.4.1.1.1.1.

[0237] dmrs-UplinkTransformPrecoding

[0238] This field indicates whether low PAPR DMRS is used for PUSCH with pi / 2BPSK modulation,as specified in TS38.211

[16] ,clause 6.4.1.1.1.2.The networkconfigures this field only if tp-pi2BPSK is configured in PUSCH-Config.

[0239] maxLength

[0240] The maximum number of OFDM symbols for UL front loaded DMRS.len1corresponds to value 1.len2corresponds to value 2.If the field is absent,theUE applies value len1.If set to len2,the UE determines the actual number ofDM-RS symbols by the associated DCI.(see TS 38.211

[16] ,clause 6.4.1.1.3).

[0241] nPUSCH-Identity:

[0242] Parameter:N_ID^(PUSCH)for DFT-s-OFDM DMRS.If the value is absent orreleased,the UE uses the value Physical cell ID(physCellId).See TS 38.211

[16] .

[0243] phaseTrackingRS:

[0244] Configures uplink PTRS(see TS 38.211

[16] ).

[0245] pi2BPSK-ScramblingID0,pi2BPSK-ScramblingID1:

[0246] UL DMRS scrambling initialization for pi / 2BPSK DMRS for PUSCH(see TS38.211

[16] ,Clause6.4.1.1.2).When the field is absent the UE applies the valuePhysical cell ID(physCellId)of the serving cell.

[0247] scramblingID0:

[0248] UL DMRS scrambling initialization for CP-OFDM(see TS 38.211

[16] ,clause 6.4.1.1.1.1).When the field is absent the UE applies the valuePhysical cell ID(physCellId).

[0249] scramblingID1:

[0250] UL DMRS scrambling initialization for CP-OFDM.(see TS 38.211

[16] ,clause 6.4.1.1.1.1).When the field is absent the UE applies the valuePhysical cell ID(physCellId).

[0251] sequenceGroupHopping:

[0252] For DMRS transmission with transform precoder the NW may configuregroup hopping by the cell-specific parameter groupHoppingEnabledTransformPrecoding in PUSCH-ConfigCommon.In this case,the NW may include this UE specificfield to disable group hopping for PUSCH transmission except for Msg3,i.e.,tooverride the configuration in PUSCH-ConfigCommon(see TS 38.211

[16] ).If thefield is absent,the UE uses the same hopping mode as for Msg3.

[0253] sequenceHopping:

[0254] Determines if sequence hopping is enabled for DMRS transmission withtransform precoder for PUSCH transmission other than Msg3(sequence hopping isalways disabled for Msg3).If the field is absent,the UE uses the same hoppingmode as for msg3.The network does not configure simultaneous group hoppingand sequence hopping.See TS 38.211

[16] ,clause 6.4.1.1.1.2.

[0255] transformPrecodingDisabled:

[0256] DMRS related parameters for Cyclic Prefix OFDM.

[0257] transformPrecodingEnabled:

[0258] DMRS related parameters for DFT-s-OFDM(Transform Precoding).

[0259] (2) DCI signaling notification

[0260] The DCI signaling contains an Antenna port field, which can be used to indicate the assigned DMRS port index. For different dmrs-Type and maxLength configuration values, the NR protocol defines multiple DMRS port calling methods. Tables 11 to 14 respectively give the configuration tables of the DMRS port calling methods corresponding to dmrs-Type=1, maxLength=1, dmrs-Type=1, maxLength=2, dmrs-Type=2, maxLength=1, and dmrs-Type=2, maxLength=2. Among them, the Antenna port field indicates the "index value" column in the table, and each index value corresponds to one or more DMRS ports.

[0261] Table 11 (dmrs-Type=1, maxLength=1)

[0262]

[0263]

[0264] Table 12 (dmrs-Type=1, maxLength=2)

[0265]

[0266]

[0267] Table 13 (dmrs-Type=2, maxLength=1)

[0268]

[0269]

[0270] Table 14 (dmrs-Type=2, maxLength=2)

[0271]

[0272]

[0273] That is, the terminal device can determine the following information through the DCI signaling sent by the network device in combination with Table 11 to Table 14:

[0274] (1) DMRS port index

[0275] In Tables 3 to 6, the "index value" can be obtained from the value indicated by the "Antenna port" field in the DCI, and the "DMRS ports" can be obtained according to the "index value". For example, the terminal device obtains "Antenna port" = 3 by parsing the DCI in a certain time slot, then it can be known from the table that the DMRS port is 0, and the PDSCH and DMRS indicated by the current DCI are transmitted in antenna port 1000.

[0276] (2) Number of symbols occupied by DMRS

[0277] The number of symbols occupied by DMRS can be indicated by the "Number of Preamble Symbols" column in the table. For example, when the value of the "Number of Preamble Symbols" column is 1, it means that the number of symbols occupied by DMRS is 1, or in other words, it means that the DMRS is a single-symbol DMRS; when the value of the "Number of Preamble Symbols" column is 2, it means that the number of symbols occupied by DMRS is 2, or in other words, it means that the DMRS is a double-symbol DMRS.

[0278] (3) Number of CDM groups that do not send data

[0279] The number of CDM groups that do not send data may be indicated by the "Number of DMRS code division multiplexing CDM groups that do not send data" column in Tables 3 to 6. Depending on different DMRS configuration types, this field may take three values: 1, 2, and 3.

[0280] Exemplarily, when the value is 1, it may indicate that the RE of the current CDM group 0 does not send data. For example, if the current time slot schedules a port belonging to CDM group 0, the RE of the current CDM group 0 does not send data, and the RE that is not mapped to DMRS on the symbol occupied by the currently scheduled DMRS can be scheduled for data; when the value is 2, it may indicate that the RE of the current CDM group 0 and CDM group 1 does not send data; when the value is 3, it indicates that the RE of the current CDM group 0, CDM group 1 and CDM group 2 do not send data.

[0281] In the existing NR protocol, since the network equipment can schedule the data of multiple users on the same time-frequency resource during actual scheduling, that is, these users form a MU-MIMO technical effect of spatial division multiplexing in the same time-frequency resource. The specific implementation of this technical effect can be that when the network equipment schedules downlink / uplink data transmission, different orthogonal DMRS ports are assigned to different UEs scheduled at the same time to achieve orthogonal DMRS transmission. The orthogonal DMRS ports here can be code division orthogonal ports occupying the same time-frequency resources (corresponding to DMRS ports in the same CDM group), or frequency division orthogonal ports occupying different time-frequency resources (corresponding to DMRS ports in different CDM groups). It can be seen that based on the implementation method of the current NR standard, for a UE, it can only receive the DMRS port corresponding to its own data channel, and cannot obtain the scheduling information of other users scheduled at the same time as itself (i.e., the scheduled DMRS port). Therefore, in the actual system, the UE cannot obtain the interference signals of other users in the cell on the same time-frequency resources and interfering users occupying the same time-frequency resources between cells, which will cause the demodulation performance of the target user to deteriorate.

[0282] Based on the current NR standard implementation method, DMRS can accurately estimate the equivalent channel experienced by the data signal, but the ability to estimate the interference signal received by the data signal is relatively weak. This insufficient ability to estimate interference will directly lead to a decrease in the ability to demodulate the data signal. How to improve the ability to measure interference signals has become an urgent problem to be solved.

[0283] In view of this, the present application provides a method for resource configuration, which enables a terminal device to perform interference measurement by configuring an interference measurement resource, thereby improving the accuracy of the interference measurement result and enhancing the demodulation performance of the data signal.

[0284] Figure 5 5 is a schematic flow chart of a resource configuration method 500 provided in an embodiment of the present application. The method 500 may include the following steps S510-S520.

[0285] S510: Acquire a first resource.

[0286] S520: Transmit a first shared channel.

[0287] The first resource is associated with at least one first reference signal port, and each of the at least one first reference signal port corresponds to a first UE.

[0288] In the present application, the first reference signal port takes a DMRS port as an example, and the first reference signal may also be other reference signals, which is not limited in the present application.

[0289] In the present application, the first reference signal port is a port configured by the network device for the first UE for transmitting the first reference signal, and each of the at least one first reference signal port corresponds to the first UE. It can be understood that the network device configures one or more first reference signal ports for the first UE, and the first UE receives the corresponding first reference signal and channel estimation based on the one or more first reference signal ports. In other words, the one or more first reference signal ports configured by the network device for the first UE are associated with the transmission of the PDSCH or PUSCH of the first UE.

[0290] It should be understood that during each data transmission process, the network device needs to notify the terminal device of the assigned antenna port (such as the DMRS port) and the configuration type of the DMRS, so that the terminal device can receive the DMRS signal and perform channel estimation on the corresponding time-frequency resources based on the assigned antenna port and in accordance with the time-frequency resource mapping rules defined in the protocol.

[0291] In the present application, the first resource is used for interference measurement of the first UE. Specifically, the first resource may be part of the time-frequency resources in the PDSCH or PUSCH resources. When interference measurement is performed on the first resource, the data signal corresponding to the first UE is not transmitted on the first resource. Exemplarily, the following two situations are given:

[0292] Case 1: The data signal of the serving cell of the first UE is not sent on the first resource.

[0293] It can be understood that the first resource is located in the PDSCH or PUSCH, and occupies the same actual scheduling PRB as the data signal. The data of the service cell of the first UE is not sent on some REs, and the signal actually received by the terminal device on these REs can be used as a neighboring cell interference data signal of the service cell.

[0294] Case 2: sending a second reference signal on the first resource.

[0295] A second reference signal is inserted into part of the resources on the PDSCH or PUSCH data channel, or in other words, the second reference signal occupies the first resource, the second reference signal is transmitted through the first resource, the second reference signal resource mapping is performed according to the first resource, the channel information corresponding to the actual data channel is measured with a specific known sequence, and the channel estimation result obtained by the measurement is subtracted from the received signal to obtain the interference information.

[0296] Exemplarily, the second reference signal may be a CSI-RS.

[0297] It should be noted that the actual purpose of inserting a second reference signal on the first resource for interference measurement in the present application is different from the actual purpose of interference measurement through NZP CSI-RS or CSI-IM (interference management) in the prior art. It should be understood that interference measurement based on CSI-RS reference signal is mainly used for the terminal device to feedback channel and interference state information to the network device, and the network device can use the feedback channel and interference state information as the channel and interference state information assumption when sending the actual data signal PDSCH (the following line is an example). Specifically, the network device can use the interference result measured by the interference measurement resource corresponding to the reference signal, and the channel state information (CSI, channel state information) measured by the reference signal. CSI can include one or more of channel quality information (CQI, channel quality information), rank indicator (RI, rank indicator) and precoding indication information (PMI, Precoding Matrix Indicator), as an assumption of data channel transmission, for jointly determining the number of transmission streams and modulation and coding scheme (MCS, modulation and code rate scheme) of the data channel.

[0298] Unlike the prior art, which uses interference information measurement based on reference signals to obtain channel state information and interference information to support base station CSI acquisition and scheduling, the interference measurement of the first resource in this application is mainly used for the demodulation process of the actual PDSCH / PUSCH data signal. Specifically, even if the existing NR protocol supports interference measurement based on reference signals, the irregular random fluctuations of neighboring services during the actual data transmission process cannot be perfectly characterized. Therefore, through the interference measurement of the first resource designed in this application, accurate measurement of interference during the actual PDSCH transmission process can further improve the demodulation capability of the PDSCH data signal, thereby improving the total system throughput.

[0299] It can be understood that the existing reference signal is multiplexed on the first resource for interference measurement, for example, CSI-IM. In this case, the resource configuration method of the reference signal corresponding to the interference measurement is different from that of the prior art. It should be clarified that the CSI-IM resource of the prior art can appear periodically, semi-continuously or non-periodically in the time domain. In the present application, CSI-IM can be redefined as a reference signal sent together with the data signal PDSCH, and its purpose is to measure the inter-cell interference in the actual process of the data signal PDSCH, and use the measurement results for the actual PDSCH data signal demodulation process.

[0300] In the present application, the first resource is associated with at least one first reference signal port, which can be understood as the first resource having a mapping relationship with the at least one first reference signal port. In other words, the time-frequency resource of the first resource has a mapping relationship with the at least one first reference signal port.

[0301] In one possible implementation, the network device indicates a first port group to the terminal device through first indication information, and accordingly, the terminal device receives the first indication information, the first port group includes at least one first reference signal port, and the first resource is associated with a first reference signal port in the first port group (for ease of description, the first reference signal port is taken as an example below as a first reference signal port associated with the first resource).

[0302] Exemplarily, the network device indicates the DMRS port {0 / 1 / 8 / 9} (first port group) to the terminal device through DCI signaling, and the time-frequency resources of the first resource have a mapping relationship with the time-frequency resources of DMRS port 0.

[0303] In a possible implementation, the network device may further indicate an index of a first reference signal port in the first port group through the second indication information, and the terminal device determines a first reference signal port associated with the first resource according to the second indication information.

[0304] The first indication information and the second indication information may be carried by the same high-level signaling, which is not limited in this application.

[0305] In a possible implementation, the first reference signal port associated with the first resource is a first reference signal port with the smallest port number in the first port group.

[0306] The time-frequency resource included in the first resource is different from the time-frequency resource corresponding to a first reference signal port associated with the first resource. It can be understood that the OFDM symbol or subcarrier occupied by the first resource is different from the OFDM symbol or subcarrier occupied by the first reference signal, thereby ensuring the normal transmission of the first reference signal.

[0307] It should also be understood that the time-frequency resources included in the first resource are different from the time domain resources corresponding to all ports in the first port group, or in other words, the time-frequency resources included in the first resource are different from the time-frequency resources corresponding to all DMRS ports in the first PDSCH.

[0308] Exemplarily, the mapping relationship between the first resource and at least one first reference signal can be determined by the following Table 15.

[0309] Table 15

[0310]

[0311]

[0312] As shown in Table 15 above, the ResourceElementOffset parameter is a high-level configuration. Different ResourceElementOffset parameter values ​​are configured for different ports. For example, assuming that the ResourceElementOffset parameter is configured as offset00, you can get Figure 6 FIG. 1 is a schematic diagram of a first resource. Figure 6 As shown, DMRS ports 0 / 1 / 8 / 9 occupy the same time-frequency resources (subcarrier index 0, symbol index 2). It can be seen from Table 15 above that the offset00 value corresponding to port 0 is 0, the offset00 value corresponding to port 1 is 2, the offset00 value corresponding to port 8 is 4, and the offset00 value corresponding to port 9 is 6. Therefore, in the figure, the first resources associated with DMRS ports 0 / 1 / 8 / 9 correspond to subcarrier indexes 0 / 2 / 4 / 6 respectively. It can be understood that, assuming that DMRS port 1 is indicated to the first UE, the first resource is the resource position indicated by the subcarrier index 2 and the OFDM symbol index 3, and the first UE determines the interference result based on the signal measured at the resource position.

[0313] An optional understanding is that it is assumed that one port 0 / 1 / 8 / 9 is allocated to four UEs, but because the four ports occupy the same time-frequency resources, even if each port is bound to the corresponding first resource, the specific position of the first resource cannot be distinguished, so these four positions are offset. For example, the offsets of DMRS ports 0 / 1 / 8 / 9 are 0 / 2 / 4 / 6 respectively.

[0314] An optional understanding is that, assuming that DMRS port 1 is indicated to the first UE, when the first UE performs interference measurement, it does not send or receive data signals on the first resource (subcarrier index is 2, OFDM symbol index is 3), and other ports 0 / 8 / 9 of the same time-frequency resources send data signals normally. Then the signal received on the first resource is the total amount of interference within and between cells.

[0315] The following embodiments are described by taking the first shared channel (PDSCH) as an example. Similarly, PUSCH is also applicable to the following specific solutions without limitation.

[0316] Figure 7 Schematic diagrams showing two PDSCH patterns. Figure 7 (a) shows a time-frequency resource pattern pattern1 for PDSCH scheduling. Figure 7(b) shows a PDSCH-scheduled time-frequency resource pattern pattern 2. The horizontal axis is the OFDM symbol index, the vertical axis is the subcarrier index, and the upper left corner is the starting OFDM symbol 0 and subcarrier 0. Symbol 0 and symbol 1 correspond to the time-frequency resources occupied by PDCCH, symbol 2 corresponds to the time-frequency resources occupied by DMRS, and symbols 3 to 14 are the time-frequency resources occupied by PDSCH, where the white time-frequency resources in symbols 3 to 14 can be the time-frequency resources corresponding to the first resource in the present invention. It can be seen that the subcarrier index (frequency domain position) corresponding to the first resource on each OFDM symbol in pattern 1 is the same, and the subcarrier index corresponding to each OFDM symbol in pattern 2 is different and presents a certain characteristic (the corresponding frequency domain sampling interval is the same).

[0317] The following embodiments mainly use pattern 2 as an example for illustration, but this application does not limit this.

[0318] First, the determination of the time domain resource of the first resource is described in detail.

[0319] The time domain unit occupied by the first resource in the first shared channel is different from the time domain unit occupied by the first reference signal in the first shared channel. In other words, in the first shared channel, the time domain units occupied by the first resource and the first reference signal cannot conflict, otherwise the transmission of the first resource cannot be guaranteed.

[0320] The time domain unit may be an OFDM symbol. Specifically, the time domain unit occupied in the first shared channel is one or more OFDM symbols in a PDSCH duration in a time slot.

[0321] Figure 8 Two schematic diagrams of PDSCH patterns are shown. Figure 8 In (a), the time domain unit occupied by the first resource is OFDM symbol index 3, 6, 9, 12, and the time domain unit occupied by the first reference signal is OFDM symbol index 2, 5, 8, 11. Obviously, the time domain resources occupied by the first resource and the first reference signal do not conflict. Figure 8 In (b), the time domain unit occupied by the first resource is OFDM symbol index 3, 6, 9, 12, and the time domain unit occupied by the first reference signal is OFDM symbol index 2, 6, 9. Obviously, the time domain resources occupied by the first resource and the first reference signal conflict, and since the time domain resources of the first resource are occupied by the first reference signal, the first resource cannot be sent normally.

[0322] In order to ensure that the time domain resources occupied by the first resource and the first reference signal do not conflict, the time domain resources of the first resource can be designed independently or in association with the first reference signal when defining the time domain resources. An exemplary solution is given below, which is not limited in this application.

[0323] In a possible implementation manner, the first resource occupies one or more time domain units in the first shared channel, and indexes of the one or more time domain units are associated with one or more time domain unit indexes corresponding to the first reference signal and the first offset.

[0324] In other words, the first resource avoids conflicts in the time domain unit occupied by the first shared channel and the time domain unit occupied by the first reference signal through the first offset.

[0325] Exemplarily, the first resource corresponds to one or more time domain units in the first shared channel with an index of l. nx , the first reference signal corresponds to one or more time domain units in the first shared channel with an index of l x , where x is the value of the index size, the first offset is d1, and the time domain unit index corresponding to the first resource and the time domain unit index and the first offset corresponding to the first reference signal satisfy the following relationship:

[0326] l nx = l x +d1.

[0327] In a possible implementation, the first resource occupies one or more time domain units in the first shared channel, and an index of a first time domain unit among the one or more time domain units is associated with a time domain unit index corresponding to the first reference signal and a first offset.

[0328] Exemplarily, the first time domain unit index corresponding to the first resource is l n0 , the first time domain unit index corresponding to the first reference signal is l0, and the first time domain unit index corresponding to the first resource and the first time domain unit index corresponding to the first reference signal and the first offset satisfy the following relationship:

[0329] l n0 =l0+d1.

[0330] The first time domain unit index l0 corresponding to the first reference signal is the index of the first time domain unit among all the time domain units corresponding to the first reference signal in a time slot. The index of the time domain unit corresponding to the first reference signal is

[0331] It can be understood that, assuming that the first resource corresponds to one or more time domain unit indexes in the first shared channel as {l n0 ,l n1 ,l n2 ,…l nx}, the first reference signal corresponds to one or more time domain unit indexes in the first shared channel {l0,l1,l2,…l n}, the x time domain unit indices corresponding to the first resource and the x time domain unit indices and the first offset corresponding to the first reference signal all satisfy the same mapping relationship, for example, l n0 =l0+d1,l n1 =l1+d1,l n2 =l2+d1,…,l nx = l x +d1.

[0332] The first offset is determined according to the time domain length corresponding to the first reference signal.

[0333] For example, when the time domain length corresponding to the first reference signal is 1, the first offset is 1.

[0334] For another example, when the time domain length corresponding to the first reference signal is 2, the first offset is 2.

[0335] The above offset values ​​are for illustrative purposes only and are not limited in this application.

[0336] In another possible implementation, when a time domain unit of the first resource conflicts with a time domain unit of the first reference signal, the first resource may be sent in a time domain unit next to the time domain unit of the conflicting first reference signal.

[0337] In the present application, when the first resource occupies multiple time domain units in the first shared channel, the intervals between the multiple time domain units are the same.

[0338] Other factors affecting the time domain unit of the first resource are described below.

[0339] In a possible implementation manner, the number of time domain units in the first shared channel corresponding to the first resource is positively correlated with the number of continuous time domain units in the first shared channel.

[0340] For example, Figure 7 Taking pattern 2 shown in (b) as an example, when the number of OFDM symbols occupied by the PDSCH is 5, the number of time domain units occupied by the corresponding first resource is reduced, such as Figure 8 As shown, the OFDM symbol indexes occupied by the PDSCH are 2 to 6, and the OFDM symbol indexes occupied by the first resource are 3 and 6.

[0341] like Fig. 9 As shown, the second OFDM symbol corresponding to the first resource is on the last symbol of the scheduled PDSCH, and the interference measurement result obtained on this symbol is used to correct the PDSCH data demodulation of the last symbol, so that fewer measurement results of the first resource can be used for PDSCH demodulation. In summary, the time-frequency resources of the first resource in this case can be optimized.

[0342] In one possible implementation, the position of the last time domain unit occupied by the first resource in the first shared channel is before the Nth time domain unit among the continuous time domain units in the first shared channel, N is less than the maximum index M of the continuous time domain units in the first shared channel, and N and M are positive integers.

[0343] In an optional understanding, the time domain unit position occupied by the first resource in the first shared channel may be limited to before the Nth symbol in the time domain unit of the first shared channel.

[0344] For example, N equals MX and X can equal 1.

[0345] In a possible implementation manner, the time domain resource of the first resource may also determine the corresponding symbol index in a predefined manner through a high-level preconfigured field and a value corresponding to the field.

[0346] Next, the determination of the frequency domain resource of the first resource is described in detail.

[0347] In a possible implementation manner, the first resource corresponds to one or more frequency domain units in the first shared channel, and an index of each frequency domain unit in the one or more frequency domain units is associated with the second offset.

[0348] The frequency domain unit index corresponding to the first resource is K RB,nx , the frequency domain unit index corresponding to the first shared channel is K nx , the second offset is d2, the first frequency domain unit index corresponding to the first resource and the first frequency domain unit index corresponding to the first shared channel and the second offset satisfy the following relationship:

[0349] K RB,n0 =K n0 +d2.

[0350] In a possible implementation manner, an index of each frequency domain unit in the one or more frequency domain units is associated with a cell identifier of the first cell.

[0351] The first shared channel is associated with the first cell, and the cell identifier corresponding to the first cell is C s , the first cell belongs to a first cell group, the first cell group includes P cells, and the cell identifiers corresponding to the cells in the first cell group are (C1, C2, ..., C p ), a first frequency domain unit index corresponding to the first resource, a first frequency domain unit index corresponding to the first shared channel, the second offset, and a cell identifier of the first cell satisfy the following relationship:

[0352] K RB,n0 =Kn0 +d2+(s mod P).

[0353] It can be understood that the first resource schedules one or more RBs in the first shared channel, the indexes of different RBs are associated with the IDs of cells in the cell group for interference measurement, and the interference measurements of different cells in the cell group correspond to different RBs.

[0354] The cell group for interference measurement includes cells with greater interference strength to the PDSCH signal of the current cell, and the number of cells included in the cell group can be configured by a higher layer and indicated by a DCI. This application does not limit this.

[0355] For example, Fig.10 A schematic diagram of a pattern of the first resource is shown. The cell group for interference measurement includes three cells: cell #1, cell #2, and cell #3. Cell #1, cell #2, and cell #3 correspond to different RBs, respectively. Cell #1 is a serving cell, and cell #1 does not send PDSCH on the corresponding first resource. The U of cell #1 measures the PDSCH interference information of cell #2 and cell #3 on the RE occupied by the first resource.

[0356] In a possible implementation manner, the first resource occupies one or more frequency domain units in the first shared channel, and an index of each of the one or more frequency domain units is associated with a cell identifier and a second offset.

[0357] An optional understanding is that the first resource corresponds to a frequency domain unit in the first shared channel, such as an RB, and the index of the RB can be determined based on the associated cell ID. Different cell IDs in the same cell group are associated with different RBs for measuring interference information of other interfering cells. The RBs corresponding to different cell IDs are staggered with a fixed offset, and the index of the RB can be determined based on the associated cell ID and the fixed offset.

[0358] When the first resource corresponds to a plurality of frequency domain units in the first shared channel, intervals between the plurality of frequency domain units are the same.

[0359] Next, the determination of the subcarrier index within the RB is described.

[0360] The first resource corresponds to one or more subcarriers in at least one RB in the first shared channel, and an index of a first subcarrier (an index of the first subcarrier) in the one or more subcarriers is associated with a first reference signal port.

[0361] The one first reference signal port is a first reference signal port associated with the first resource.

[0362] In a possible implementation manner, the index of the first subcarrier may be determined according to the subcarrier index corresponding to the first reference signal and the third offset.

[0363] Exemplarily, the first subcarrier index is f n , the subcarrier index corresponding to the first reference signal is f, the third offset is d3, and the first subcarrier index, the subcarrier index corresponding to the first reference signal, and the third offset satisfy the following relationship:

[0364] f n =f+d3.

[0365] When the first reference signal includes multiple subcarrier indexes, the subcarrier index corresponding to the first reference signal is the smallest subcarrier index among multiple subcarriers corresponding to a first reference signal port associated with the first resource.

[0366] The resource density of the first resource is described below.

[0367] The time domain density of the first resource indicates that one first resource is sent in every T time domain units, and the frequency domain density indicates that one first resource is sent in every F subcarriers.

[0368] It should be understood that a higher MCS corresponds to a higher PDSCH demodulation capability requirement, and therefore requires a first resource with a higher density.

[0369] In a possible implementation manner, the time domain density and the frequency domain density of the first resource in the first shared channel are associated with the MCS corresponding to the first shared channel.

[0370] Exemplarily, the MCS threshold can be configured through high-level signaling, one MCS threshold corresponds to multiple frequency domain density or time domain density values, and the time-frequency resource density of the first resource is determined according to the MCS corresponding to the currently scheduled shared channel.

[0371] Exemplarily, the following Tables 16 and 17 respectively illustrate how to determine the time domain density and frequency domain density of the first resource based on the MCS threshold.

[0372] Table 16 below shows the mapping relationship between the MCS threshold and the first resource time domain density, where: N is the time domain starting symbol index occupied by the first resource, l dThe number of symbols that PDSCH continues, which can be determined based on RRC+DCI information. MCS0 / 1 / 2 / 3 is the value of different first resource time domain position configuration information corresponding to high-level signaling, which can be determined based on RRC information. The numbers in the table are the relative indexes of OFDM symbols occupied by PDSCH in a slot. The index of the time domain symbol in the PDSCH can be determined based on the value corresponding to MCS and the number of symbols that continue in the PDSCH.

[0373] Table 17 below shows the mapping relationship between the MCS threshold and the frequency domain density of the first resource, where f N is the starting subcarrier index occupied by the first resource, f is the number of PDSCH subcarriers, the number of PDSCH subcarriers can be determined according to RRC+DCI information, MCS0 / 1 / 2 / 3 is the value of different first resource time domain position configuration information corresponding to high-level signaling, and the value can be determined according to RRC information. The index of the subcarrier in the PDSCH can be determined according to the value corresponding to MCS and the number of PDSCH subcarriers.

[0374] Table 16

[0375]

[0376] Table 17

[0377]

[0378] In summary, according to the above scheme, the specific time-frequency resources of the first resource can be defined, and the network device and the terminal device can obtain the corresponding first resource through the predefined first resource. For example, it can be predefined in the form of Table 15, or it can be indicated by the network device to the terminal device through signaling.

[0379] The following combination Fig.11 The manner in which the network device indicates the first resource through signaling is described.

[0380] Fig.11 A schematic diagram of a resource configuration method 1100 is shown. For ease of description, the method 1100 is exemplarily described by taking the interaction between a network device and a terminal device as an example. It can be understood that the terminal device can be a component of the terminal device (such as a chip or circuit), and the network device can also be a component of the network device (such as a chip or circuit), without limitation.

[0381] In this embodiment, downlink data is taken as an example. Similarly, uplink data is also applicable to this solution without limitation.

[0382] S1100, the terminal device sends information #1 to the network device.

[0383] Among them, information #1 includes the first resource interference measurement capability supported by the terminal device.

[0384] Specifically, the first resource interference measurement capability refers to the capability of measuring neighboring cell interference data based on the first resource in the PDSCH / PUSCH.

[0385] Exemplarily, the first resource interference measurement capability includes any implementation method of not transmitting a data signal corresponding to the terminal device on the first resource, for example, case 1 shown in method 500: not sending a data signal of a serving cell of the terminal device on the first resource, and case 2: sending a second reference signal on the first resource. For details, please refer to the description in the previous text, which will not be repeated here.

[0386] The interference data measured by the first resource includes interference signals of other UEs in the cell and interference signals between cells.

[0387] S1120, the network device sends indication information #1 to the terminal device.

[0388] The indication information #1 is used to configure the first resource for the terminal device.

[0389] In a possible implementation manner, the indication information #1 may be RRC signaling.

[0390] The network device may configure the first resource through RRC signaling.

[0391] It can be understood that if the second reference signal is occupied on the first resource, the RRC signaling can configure the second reference signal.

[0392] Exemplarily, the RRC signaling is used to indicate to the terminal device a capability of performing interference measurement based on the first resource or the second reference signal.

[0393] For example, when configuring the first resource through RRC signaling, the RRC signaling may configure a capability of not sending the data signal of the serving cell of the terminal device on the first resource, but the specific time-frequency resource of the first resource is not configured in the RRC signaling. In this case, the time-frequency resource of the corresponding first resource may be indicated when scheduling PDSCH through DCI.

[0394] Exemplarily, the indication information #1 is used to configure the time-frequency resources corresponding to the first resource for the terminal device.

[0395] For example, the time-frequency resources and port number corresponding to the first resource are configured in the RRC signaling.

[0396] It should be understood that the RRC signaling can also configure MCS threshold, ResourceElementOffset parameters and other parameters for determining the time-frequency resources of the first resource.

[0397] In another possible implementation manner, the indication information #1 may also be DCI signaling.

[0398] It should be understood that the network device can schedule the PDSCH through DCI signaling, and the DCI signaling is also used to indicate the first resource.

[0399] The following description is given by taking RRC signaling as an example.

[0400] The terminal device receives RRC signaling, in which a first resource is configured. The first resource includes multiple ports, and each port may be associated with a DMRS port.

[0401] In addition, RRC signaling is also used to indicate DMRS configuration information to the terminal device, including DMRS type, maximum length and other configuration information.

[0402] For the specific signaling content, please refer to the description about “RRC signaling configuration of DMRS configuration type and number of occupied symbols” in the background technology section above.

[0403] S1130, the terminal device receives indication information #1, and determines the first resource according to indication information #1.

[0404] Exemplarily, the indication information #1 (an example of the first indication information) may be DCI indication information, and the terminal device receives DCI signaling to determine PDSCH resources and DMRS resources.

[0405] Specifically, the DCI indication information may indicate one or more DMRS ports, and the one or more DMRS ports have an association relationship with the first resource, and the time-frequency resource position of the first resource may be determined according to the association relationship.

[0406] The following is an exemplary description of a method for using DCI indication information to indicate a DMRS port.

[0407] The DMRS port indication table is determined according to the DMRS configuration information in the RRC signaling in step S1120.

[0408] The DMRS port indication table is determined according to the DMRS configuration information in the RRC signaling in step S1120. Please refer to Tables 11 to 14 above, which respectively give the configuration tables of the DMRS port calling methods corresponding to dmrs-Type = 1, maxLength = 1, dmrs-Type = 1, maxLength = 2, dmrs-Type = 2, maxLength = 1, and dmrs-Type = 2, maxLength = 2. The DCI indication information contains an Antenna port field, which can be used to indicate the assigned DMRS port index. Among them, the Antenna port field indicates the "index value" column in the table, and each index value corresponds to one or more DMRS ports.

[0409] For example, taking Table 11 corresponding to the DMRS configuration type dmrs-Type=1 and the maximum length maxLength=1 as an example, when the value indicated by the Antenna port field is 8, the corresponding DMRS port is {2,3}. It can be understood that the first resource is associated with at least one of DMRS port 2 and DMRS port 3, and the specific time-frequency resource position of the first resource can be determined according to at least one of DMRS port 2 or DMRS port 3.

[0410] For another example, taking Table 12 corresponding to the DMRS configuration type dmrs-Type=1 and the maximum length maxLength=2 as an example, when the value indicated by the Antenna port field is 2, the corresponding DMRS port is {0,1,2,3,4,5,6}. It can be understood that the first resource is associated with at least one of the DMRS ports {0,1,2,3,4,5,6}, and the specific time-frequency resource position of the first resource can be determined according to at least one of the DMRS ports {0,1,2,3,4,5,6}.

[0411] In a possible implementation, the first resource can be associated with a port with a smaller port number in the DMRS port combination. Taking the value of 8 in Table 11 as an example, the first resource can be associated with DMRS port 2.

[0412] In a possible implementation, the time-frequency resource of the first resource is determined according to DMRS port 2.

[0413] First, a method for determining a time domain unit (taking an OFDM symbol as an example) is exemplified.

[0414] The first resource corresponds to one or more OFDM symbols in the PDSCH, and the indexes of the one or more OFDM symbols are related to the index of the OFDM symbol of port 2 in the PDSCH.

[0415] In a possible implementation, the index of the one or more OFDM symbols and the index of the OFDM symbol of port 2 in the PDSCH satisfy l nx = l x +d1, where the first resource corresponds to the time domain unit index in PDSCH is l nx , port 2 corresponds to the time domain unit index of PDSCH l x , the first offset is d1.

[0416] The following Tables 18 and 19 respectively give single-symbol DMRS configuration and dual-symbol DMRS configuration tables.

[0417] Table 18

[0418]

[0419] Table 19

[0420]

[0421] Take Table 18 above as an example, assuming that d The value is 14 and dmrs-AdditionalPosition is configured as pos3.

[0422] The number of OFDM symbols occupied by PDSCH in this slot is 14, where each symbol index can be marked as l x , the value of x is {0,1,2,...,13}. In this implementation, the symbol sent by the DMRS corresponds to the relative index {0,3,6,9}, and the OFDM symbol index of the first resource and the OFDM symbol index of port 2 satisfy l nx = l x +d1, where the first resource corresponds to the time domain unit index in PDSCH is l nx , port 2 corresponds to the time domain unit index of PDSCH l x , assuming that the first offset d1 is 1, then the symbol index corresponding to the first resource in the slot can be {1, 4, 7, 10}.

[0423] Next, a method for determining frequency domain resources is exemplified.

[0424] The first resource corresponds to one or more RBs in the PDSCH, and the indexes of the one or more RBs are related to the index of the RB of port 2 in the PDSCH.

[0425] In one possible implementation, each of the one or more RB indexes satisfies K with the RB index of port 2 in the PDSCH. RB,nx =K nx+d2, where the RB index corresponding to the first resource is K RB,nx , the RB index corresponding to port 2 is K nx , the first offset is d2.

[0426] In a possible implementation manner, the index of the one or more RBs is related to a cell identifier.

[0427] In this case, the PDSCH is associated with the first cell, and the cell identifier corresponding to the first cell is C s , the first cell belongs to the first cell group, the first cell group includes P cells, and the cell identifiers corresponding to the cells in the first cell group are (C1, C2, ..., C p ), the RB index corresponding to the first resource, the RB index corresponding to port 2, and the cell identifier of the first cell satisfy the following relationship: K RB,nx =K nx +d2+(s mod P).

[0428] Next, a method for determining REs within an RB is exemplified.

[0429] The subcarrier index of the first resource is related to the subcarrier index of port 2.

[0430] In a possible implementation, the subcarrier index of the first resource and the subcarrier index of port 2 satisfy f nx =f x +d3, the subcarrier index of the first resource is f nx , the subcarrier index of port 2 is f x , the third offset is d3.

[0431] In a possible implementation manner, the frequency domain resource of the first resource may be determined according to the following formula:

[0432]

[0433] Among them, K RB,nx =Knx+d2+(smodP),f nx =f x +d3.

[0434] Where k is the subcarrier index, f nx is the offset within the RB, s is the cell-related identifier, K null is the RB-level frequency domain density of the first resource, is the number of subcarriers contained in an RB, K RB,nx is the RB offset.

[0435] Among them, the correlation relationship between the offset of the RE level and can also be determined according to the following Table 20.

[0436] Table 20

[0437]

[0438]

[0439] According to the above determination method, when the high-level parameter is configured as offset01, the RE offset f corresponding to DMRS port 2 can be obtained. nx , the value corresponding to DMRS port 2 is 3, and the first resource is sent on the subcarrier numbered 3 of RB. At the same time, assuming that the cell index corresponding to the current cell is 0 in a cell group, that is, when the value of s in the above formula is 0, K RB,nx The corresponding RB offset is 0, that is, the RB index occupied by the first resource is every K null The RB with relative index 0 in the RBs. It can be understood that if the number of RBs scheduled by PDSCH is 8, and the index of these 8 RBs is K nx , where x is {0, 1, 2, …, 7}, then the first resource occupied RB index obtained according to the above calculation formula is 0 and 4.

[0440] According to the above steps, the terminal device can determine the following: the first resource is sent in the frequency domain corresponding to the third subcarrier in the 0th and 4th RBs; the first resource is transmitted in the time domain corresponding to the symbol of the OFDM symbol index {1,4,7,10} in the slot sent by the PDSCH, that is, the terminal device can determine the specific time domain and frequency domain position corresponding to the first resource in the first PDSCH according to the above method. S1140, the terminal device receives the PDSCH.

[0441] Specifically, the terminal device receives PDSCH on the time-frequency resources corresponding to the first resources.

[0442] At the time-frequency resource position corresponding to the first resource in the PDSCH, the network device does not send data to the terminal device. Similarly, the terminal device does not receive data at the time-frequency resource position corresponding to the first resource.

[0443] S1150, the terminal device demodulates the PDSCH according to the received DMRS and the first resource.

[0444] The terminal device performs interference estimation based on the signal on the first resource.

[0445] The terminal device performs equivalent channel estimation based on the DMRS.

[0446] The following is explained using formula (6) and formula (7) as examples.

[0447] y=HPx+H i Pi x i +n=Hx+H i x i +n (6)

[0448] r =HP s +n=H x +H s +n (7)

[0449] Where s is the DMRS vector sent by the transmitter, x is the data symbol vector sent by the transmitter, DMRS and data are precoded in the same way (multiplied by the same precoding matrix P), H is the equivalent channel experienced by the data signal and the reference signal, and the receiver can obtain an estimate of the equivalent channel based on the DMRS vector using the channel estimation algorithm, and the interference signal H i P i x i It can be obtained according to the measurement of the first resource, and the MIMO equalization and subsequent demodulation of the poem signal can be completed based on equivalent channel estimation and interference estimation.

[0450] According to the above technical solution, the corresponding first resource can be indicated to the UE by pre-configuration or signaling indication. The UE performs interference measurement within the cell and between cells based on the first resource, thereby improving the accuracy of the interference measurement. Furthermore, data signal demodulation is performed based on the interference estimation, thereby enhancing the accuracy of data demodulation in the actual system, thereby improving the overall capacity of the system.

[0451] It should be understood that the specific examples in the embodiments of the present application are only intended to help those skilled in the art to better understand the embodiments of the present application, rather than to limit the scope of the embodiments of the present application.

[0452] It should also be understood that the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0453] It should also be understood that in the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0454] Above, combined Figures 5 to 11 The method for sending a reference signal provided in the embodiment of the present application is described in detail. Figures 12 to 15 The communication device, network equipment and terminal equipment provided by this application are described.

[0455] Fig.12A schematic diagram of a communication device 1200 provided in an embodiment of the present application is shown.

[0456] The communication device 1200 includes a transceiver unit 1210 and a processing unit 1220. The transceiver unit 1210 can be used to implement corresponding communication functions. The transceiver unit 1210 can also be called a communication interface or a communication unit. The processing unit 1220 can be used to perform data processing.

[0457] Optionally, the communication device 1200 also includes a storage unit, which can be used to store instructions and / or data, and the processing unit 1220 can read the instructions and / or data in the storage unit so that the device implements the actions of the network device in the aforementioned method embodiments.

[0458] In one possible design, the communication device 1200 can implement the steps or processes performed by the network device in the above method embodiment. Among them, the transceiver unit 1210 can be used to perform the operations related to the transceiver of the network device in the above method embodiment, such as Figure 5 or Fig.11 The processing unit 1220 may be used to perform the processing-related operations of the network device in the above method embodiment, such as Figure 5 or Fig.11 The processing-related operations of the network device in the illustrated embodiment.

[0459] In another possible design, the communication device 1200 may be the terminal device in the aforementioned embodiment, or may be a component (such as a chip) of the terminal device. The communication device 1200 may implement the steps or processes executed by the terminal device in the above method embodiment. The transceiver unit 1210 may be used to perform the operations related to the transceiver of the terminal device in the above method embodiment, such as Figure 5 or Fig.11 The processing unit 1220 may be used to perform the processing-related operations of the terminal device in the above method embodiment, such as Figure 5 or Fig.11 The processing-related operations of the terminal device in the illustrated embodiment.

[0460] Fig.13 1 is a schematic block diagram of a communication device 1300 provided in an embodiment of the present application. The device 1300 includes a processor 1310, and the processor 1310 is coupled to a memory 1330. Optionally, the memory 1330 is further included, which is used to store computer programs or instructions and / or data. The processor 1310 is used to execute the computer programs or instructions stored in the memory 1330, or read the data stored in the memory 1330, so as to execute the methods in the above method embodiments.

[0461] Optionally, there are one or more processors 1310 .

[0462] Optionally, the memory 1330 is one or more.

[0463] Optionally, the memory 1330 is integrated with the processor 1310 or provided separately.

[0464] Alternatively, if Fig.13 As shown, the device 1300 further includes a transceiver 1320, and the transceiver 1320 is used for receiving and / or sending signals. For example, the processor 1310 is used for controlling the transceiver 1320 to receive and / or send signals.

[0465] As a solution, the device 1300 is used to implement the operations performed by the network device in each of the above method embodiments.

[0466] For example, the processor 1310 is used to execute the computer program or instructions stored in the memory 1330 to implement the relevant operations of the network device in the above various method embodiments. Figure 5 or Fig.11 The method executed by the network device in the illustrated embodiment.

[0467] When the communication device 1300 is a network device, for example, it is a base station. Fig.14 A simplified schematic diagram of the base station structure is shown. The base station includes a portion 1410 and a portion 1420. The portion 1410 is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals into baseband signals; the portion 1420 is mainly used for baseband processing, controlling the base station, etc. The portion 1410 can generally be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc. The portion 1420 is generally the control center of the base station, and can generally be referred to as a processing unit, which is used to control the base station to perform the processing operations on the network device side in the above method embodiment.

[0468] The transceiver unit of part 1410 may also be referred to as a transceiver or a transceiver, etc., and includes an antenna and a radio frequency circuit, wherein the radio frequency circuit is mainly used for radio frequency processing. Optionally, the device used to implement the receiving function in part 1410 may be regarded as a receiving unit, and the device used to implement the sending function may be regarded as a sending unit, that is, part 1410 includes a receiving unit and a sending unit. The receiving unit may also be referred to as a receiver, a receiver, or a receiving circuit, etc., and the sending unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0469] Part 1420 may include one or more boards, each of which may include one or more processors and one or more memories. The processor is used to read and execute programs in the memory to implement baseband processing functions and control of the base station. If there are multiple boards, each board can be interconnected to enhance processing capabilities. As an optional implementation, multiple boards may share one or more processors, or multiple boards may share one or more memories, or multiple boards may share one or more processors at the same time.

[0470] For example, in one implementation, the transceiver unit of part 1410 is used to execute Figure 5 or Fig.11 In the embodiment shown, the steps related to sending and receiving are performed by the network device; part 1420 is used to perform Figure 5 or Fig.11 The illustrated embodiment relates to processing steps performed by a network device.

[0471] It should be understood that Fig.14 This is only an example and not a limitation. The network device including the transceiver unit and the processing unit may not rely on Fig.14 The structure shown.

[0472] When the communication device 1300 is a chip, the chip includes a transceiver unit and a processing unit, wherein the transceiver unit may be an input / output circuit or a communication interface; and the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip.

[0473] As another solution, the communication device 1300 is used to implement the operations performed by the terminal device in the above method embodiments.

[0474] For example, the processor 1310 is used to execute the computer program or instructions stored in the memory 1330 to implement the relevant operations of the terminal device in the above various method embodiments. Figure 5 or Fig.11 The method executed by the terminal device in the illustrated embodiment.

[0475] In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 1310 or an instruction in the form of software. The method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in the processor for execution. The software module can be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 1330, and the processor 1310 reads the information in the memory 1330 and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.

[0476] When the communication device 1400 is a terminal device, Fig.15 A simplified schematic diagram of the structure of a terminal device is shown. For ease of understanding and illustration, Fig.15 In this article, a mobile phone is used as an example of a terminal device. Fig.15 As shown, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used to process communication protocols and communication data, as well as to control the terminal device, execute software programs, process software program data, etc. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for conversion between baseband signals and radio frequency signals and processing of radio frequency signals. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input-output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input-output devices.

[0477] When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the RF circuit. The RF circuit performs RF processing on the baseband signal and then sends the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For ease of explanation, Fig.15 Only one memory and processor are shown in the figure. In an actual terminal device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device. The memory may be set independently of the processor or integrated with the processor, and this application does not limit this.

[0478] In the embodiment of the present application, the antenna and the radio frequency circuit with transceiver functions can be regarded as the transceiver unit of the terminal device, and the processor with processing function can be regarded as the processing unit of the terminal device.

[0479] like Fig.15 As shown, the terminal device includes a transceiver unit 1510 and a processing unit 1520. The transceiver unit 1510 may also be referred to as a transceiver, a transceiver, a transceiver device, etc. The processing unit 1520 may also be referred to as a processor, a processing board, a processing module, a processing device, etc.

[0480] Optionally, the device used to implement the receiving function in the transceiver unit 1510 may be regarded as a receiving unit, and the device used to implement the sending function in the transceiver unit 1510 may be regarded as a sending unit, that is, the transceiver unit 1510 includes a receiving unit and a sending unit. The transceiver unit may also be sometimes referred to as a transceiver, a transceiver, or a transceiver circuit, etc. The receiving unit may also be sometimes referred to as a receiver, a receiver, or a receiving circuit, etc. The sending unit may also be sometimes referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0481] For example, in one implementation, the transceiver unit 1510 is used to execute Figure 5 or Fig.11 The processing unit 1520 is used to perform the receiving operation of the terminal device in Figure 5 or Fig.11 Processing actions on the terminal device side.

[0482] It should be understood that Fig.15 This is only an example and not a limitation. The terminal device including the transceiver unit and the processing unit may not rely on Fig.15 The structure shown.

[0483] When the communication device 1300 is a chip, the chip includes a transceiver unit and a processing unit, wherein the transceiver unit may be an input / output circuit or a communication interface; and the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip.

[0484] An embodiment of the present application also provides a network device, including: a processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the network device executes the method for sending a reference signal as described in any of the above.

[0485] The embodiment of the present application also provides a network device, including a transceiver unit and a processing unit. The transceiver unit can be used to perform the steps of sending and receiving of the network device in the above method embodiment. The processing unit can be used to perform other steps of the network device in the above method embodiment except sending and receiving.

[0486] An embodiment of the present application further provides a computer-readable storage medium having a computer program or instruction stored thereon, wherein when the computer program or instruction is executed, the computer is caused to execute the sending of a reference signal as described in any one of the foregoing descriptions.

[0487] An embodiment of the present application further provides a computer program product, which includes: a computer program code, which, when executed on a computer, enables the computer to execute the method executed by the aforementioned network device.

[0488] An embodiment of the present application further provides a computer program product, which includes: a computer program code, which, when executed on a computer, enables the computer to execute the method executed by the aforementioned terminal device.

[0489] An embodiment of the present application also provides a communication system, which includes the network device and the terminal device in the above embodiment.

[0490] As an example, the communication system includes: Figure 5 or Fig.11 The network device and the terminal device in the described embodiments.

[0491] The explanation of the relevant contents and beneficial effects in any of the communication devices provided above can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0492] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0493] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0494] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0495] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0496] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0497] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0498] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for resource allocation, characterized in that: include: Acquire a first resource, where the first resource is associated with at least one first reference signal port, each of the at least one first reference signal port corresponds to a first UE, the first resource is used for interference measurement of the first UE, the first resource is associated with a first shared channel, and the first reference signal is associated with the first shared channel; The first shared channel is transmitted.

2. The method according to claim 1, characterized in that: The method further comprises: A data signal corresponding to the first UE is not transmitted on the first resource.

3. The method according to claim 1, characterized in that A second reference signal occupies the first resource, the second reference signal is associated with the first shared channel, and the method further includes: The second reference signal is transmitted on the first resource.

4. The method according to any one of claims 1 to 3, characterized in that The method further comprises: First indication information is received, where the first indication information is used to indicate a first port group, the first port group includes at least one first reference signal port, and the first resource is associated with a first reference signal port in the first port group.

5. The method according to claim 4, characterized in that The method further comprises: Second indication information is received, where the second indication information is used to indicate an index of a first reference signal port in the first port group, and a first reference signal port associated with the first resource is determined according to the second indication information.

6. The method according to claim 4 or 5, characterized in that: The first reference signal port associated with the first resource is a first reference signal port with the smallest port number in the first port group.

7. The method according to any one of claims 1 to 6, characterized in that The time-frequency resources included in the first resource are different from the time-frequency resources corresponding to a first reference signal port associated with the first resource.

8. The method according to any one of claims 1 to 7, characterized in that The first resource corresponds to one or more time domain units in the first shared channel, and the indexes of the one or more time domain units are associated with the indexes of one or more time domain units corresponding to the first reference signal in the first shared channel and a first offset.

9. The method according to claim 8, characterized in that The first resource corresponds to one or more time domain units in the first shared channel and the index is l nx , the first reference signal corresponds to one or more time domain units in the first shared channel with an index of l x , where x is the size of the index, the first offset is d1, The time domain unit index corresponding to the first resource, the time domain unit index corresponding to the first reference signal, and the first offset satisfy the following relationship: l nx ＝l x +d1。 10. The method according to claim 9, characterized in that The first time domain unit index corresponding to the first resource is l n0 , the first time domain unit index corresponding to the first reference signal is l0, The first time domain unit index corresponding to the first resource, the first time domain unit index corresponding to the first reference signal, and the first offset satisfy the following relationship: l n0 ＝l0+d1。 11. The method according to claim 10, characterized in that When the time domain length corresponding to the first reference signal is 1, the first offset is 1.

12. The method according to claim 10, characterized in that When the time domain length corresponding to the first reference signal is 2, the first offset is 2.

13. The method according to any one of claims 8 to 12, characterized in that: When the first resource corresponds to a plurality of time domain units in the first shared channel, intervals between the plurality of time domain units are the same.

14. The method according to any one of claims 8 to 13, characterized in that: The number of time domain units in the first shared channel corresponding to the first resource is positively correlated with the number of continuous time domain units in the first shared channel.

15. The method according to claim 14, characterized in that The position of the last time domain unit occupied by the first resource in the first shared channel is before the Nth time domain unit in the continuous time domain units in the first shared channel, N is less than the maximum index M of the continuous time domain units in the first shared channel, and N and M are positive integers.

16. The method according to any one of claims 1 to 15, characterized in that The first resource corresponds to one or more frequency domain units in the first shared channel, and an index of each of the one or more frequency domain units is associated with a second offset.

17. The method according to claim 16, characterized in that The frequency domain unit index corresponding to the first resource is K RB,nx , the frequency domain unit index corresponding to the first shared channel is K nx , the second offset is d2, the first frequency domain unit index corresponding to the first resource and the first frequency domain unit index corresponding to the first shared channel and the second offset satisfy the following relationship: K RB,n0 =K n0 +d2。 18. The method according to claim 16 or 17, characterized in that An index of each frequency domain unit in the one or more frequency domain units is associated with a cell identifier of the first cell.

19. The method according to claim 18, characterized in that The first shared channel is associated with a first cell, and the cell identifier corresponding to the first cell is C s , the first cell belongs to a first cell group, the first cell group includes P cells, and the cell identifiers corresponding to the cells in the first cell group are (C1, C2, ..., C p ), a first frequency domain unit index corresponding to the first resource, a first frequency domain unit index corresponding to the first shared channel, the second offset, and a cell identifier of the first cell satisfy the following relationship: K RB,n0 =K n0 +d2+(smodP)。 20. The method according to any one of claims 16 to 19, characterized in that When the first resource corresponds to a plurality of frequency domain units in the first shared channel, intervals between the plurality of frequency domain units are the same.

21. The method according to any one of claims 16 to 20, characterized in that At least one frequency domain unit among the one or more frequency domain units includes one or more subcarriers, and an index of a first subcarrier among the one or more subcarriers is associated with the at least one first reference signal port.

22. The method according to claim 21, characterized in that The subcarrier index of the first resource is associated with a first reference signal port of the associated first resource, and the first subcarrier index of the first resource is determined according to the first subcarrier index corresponding to the first reference signal and a third offset.

23. The method according to claim 22, characterized in that The first subcarrier index is f n0 , the subcarrier index corresponding to the first reference signal is f0, the third offset is d3, The first subcarrier index, the subcarrier index corresponding to the first reference signal, and the third offset satisfy the following relationship: f n0 =f0+d3。 24. The method according to any one of claims 1 to 23, characterized in that The time domain density and frequency domain density of the first resource in the first shared channel are associated with the MCS corresponding to the first shared channel, the time domain density indicates that one first resource is sent every T time domain units, and the frequency domain density indicates that one first resource is sent every F subcarriers.

25. The method according to any one of claims 1 to 24, characterized in that The method further comprises: Send second indication information, where the second indication information is used to indicate the first resource.

26. The method according to claim 25, characterized in that The second indication information is high-layer signaling or downlink control signaling.

27. The method according to any one of claims 1 to 26, characterized in that The first reference signal is a demodulation reference signal.

28. The method according to any one of claims 1 to 27, characterized in that The time domain unit is an OFDM symbol, and the frequency domain unit is a resource block RB.

29. A communication device, characterized in that: Comprising units for performing the method according to any one of claims 1 to 27.

30. A communication device, characterized in that: include: A processor, wherein the processor is coupled to a memory, wherein the memory is used to store programs or instructions, and when the programs or instructions are executed by the processor, the device executes the method according to any one of claims 1 to 27.

31. A readable storage medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instructions are executed, the computer is caused to perform the method according to any one of claims 1 to 27.

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