Method and device for determining reference signal

Abstract

The embodiment of the invention provides a reference signal determination method and device, and relates to the technical field of communication. The method comprises the following steps: receiving an indication message sent by network equipment, wherein the indication message is used for indicating a first channel state information reference signal CSI-RS; under the condition that the first CSI-RS is an unmeasured reference signal, determining a target CSI-RS associated with the first CSI-RS from the measured CSI-RS based on an association relationship between the unmeasured CSI-RS and the measured CSI-RS; wherein the target CSI-RS and a demodulation reference signal (DMRS) which performs uplink signal transmission and / or uplink channel transmission have a co-site relationship, and / or the target CSI-RS and a DMRS which performs downlink signal transmission and / or downlink channel transmission have a co-site relationship, so that subsequent normal uplink and / or downlink transmission can be ensured.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for determining a reference signal. Background Art

[0002] In a FR1 (frequency range 1) + FR2 (frequency range 2) CA (Carrier Aggregation) scenario, a FR2 Scell ​​(Secondary Cell) may not always be in an activated state and needs to be activated from an inactive state.

[0003] The FR2 Scell ​​needs to perform AGC1 process, AGC2 process, coarse synchronization process, and L1 measurement process in sequence when it enters the active state from the inactive state. During the L1 measurement process, the terminal needs to perform subsequent uplink transmission and / or downlink transmission based on the reference signal indicated by the base station.

[0004] Therefore, how the terminal performs subsequent normal uplink and / or downlink transmission based on the reference signal indicated by the base station is a technical problem that needs to be solved by those skilled in the art. Summary of the invention

[0005] The embodiments of the present application provide a method and apparatus for determining a reference signal, so that a terminal can perform subsequent normal uplink and / or downlink transmission based on the reference signal indicated by a base station.

[0006] In a first aspect, an embodiment of the present application provides a method for determining a reference signal, which is applied to a terminal, and the method includes:

[0007] An indication message sent by a network device is received, where the indication message is used to indicate a first channel state information reference signal CSI-RS.

[0008] In the case that the first CSI-RS is an unmeasured reference signal, based on an association relationship between the unmeasured CSI-RS and the measured CSI-RS, a target CSI-RS associated with the first CSI-RS is determined from the measured CSI-RS.

[0009] The target CSI-RS and a demodulation reference signal DMRS for uplink signal transmission and / or uplink channel transmission are co-located, and / or the target CSI-RS and a DMRS for downlink signal transmission and / or downlink channel transmission are co-located.

[0010] According to a method for determining a reference signal provided by an embodiment of the present application, the association relationship is determined based on the co-site address information QCL-info of the unmeasured CSI-RS, and the QCL-info includes an identifier of the measured CSI-RS;

[0011] and / or,

[0012] The association relationship is determined based on the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS, and a distance between the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS is less than a preset distance threshold.

[0013] According to a method for determining a reference signal provided in an embodiment of the present application, the method further includes:

[0014] An association indication message of the unmeasured CSI-RS sent by the network device is received, where the association indication message includes an identifier of the measured CSI-RS.

[0015] The association relationship is determined based on the identifier of the measured CSI-RS.

[0016] According to a method for determining a reference signal provided by an embodiment of the present application, the association indication message includes any one of the following:

[0017] TCI status message;

[0018] Information elements;

[0019] Configuration information.

[0020] According to a method for determining a reference signal provided in an embodiment of the present application, the indication message includes any one of the following:

[0021] A TCI status message including the first CSI-RS;

[0022] A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS;

[0023] Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

[0024] According to a method for determining a reference signal provided in an embodiment of the present application, the method further includes:

[0025] receiving a resource indication message sent by the network device, where the resource indication message is used to indicate a target resource used by the terminal to report a measurement result;

[0026] Based on the target resource, reporting the measurement result to the network device;

[0027] The resource indication message includes any of the following:

[0028] activating a MAC-CE used by a secondary cell of the terminal;

[0029] Radio Resource Control RRC message;

[0030] The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

[0031] According to a method for determining a reference signal provided in an embodiment of the present application, the MAC-CE includes at least one of the following:

[0032] a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal;

[0033] A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located;

[0034] A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource;

[0035] A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located;

[0036] A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located;

[0037] A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource;

[0038] A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource;

[0039] A frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

[0040] In a second aspect, an embodiment of the present application further provides a method for determining a reference signal, which is applied to a network device, and the method includes:

[0041] An association relationship between the unmeasured CSI-RS and the measured CSI-RS is determined.

[0042] An indication message is sent to a terminal, where the indication message is used to indicate a first channel state information reference signal CSI-RS.

[0043] Among them, the association relationship is used to determine the target CSI-RS associated with the first CSI-RS, and the target CSI-RS has a co-site relationship with a demodulation reference signal for uplink signal transmission and / or uplink channel transmission, and / or has a co-site relationship with a DMRS for downlink signal transmission and / or downlink channel transmission.

[0044] According to a method for determining a reference signal provided by an embodiment of the present application, determining an association relationship between an unmeasured CSI-RS and a measured CSI-RS includes:

[0045] determining whether the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS; and determining that the unmeasured CSI-RS has the association relationship with the measured CSI-RS when the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS;

[0046] and / or,

[0047] Determine that a distance between a time slot position where the unmeasured CSI-RS is located and a time slot position where the measured CSI-RS is located is less than a preset distance threshold; if the distance is less than the preset distance threshold, determine that the unmeasured CSI-RS and the measured CSI-RS have the association relationship.

[0048] According to a method for determining a reference signal provided in an embodiment of the present application, the method further includes:

[0049] An association indication message of the unmeasured CSI-RS is sent to the terminal, where the association indication message includes an identifier of the measured CSI-RS, and the association indication message is used to determine the association relationship.

[0050] According to a method for determining a reference signal provided by an embodiment of the present application, the association indication message includes any one of the following:

[0051] TCI status message;

[0052] Information elements;

[0053] Configuration information.

[0054] According to a method for determining a reference signal provided in an embodiment of the present application, the indication message includes any one of the following:

[0055] A TCI status message including the first CSI-RS;

[0056] A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS;

[0057] Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

[0058] According to a method for determining a reference signal provided in an embodiment of the present application, the method further includes:

[0059] Sending a resource indication message to the terminal, where the resource indication message is used to indicate a target resource to be used by the terminal for reporting a measurement result;

[0060] The resource indication message includes any of the following:

[0061] activating a MAC-CE used by a secondary cell of the terminal;

[0062] Radio Resource Control RRC message;

[0063] The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

[0064] According to a method for determining a reference signal provided in an embodiment of the present application, the MAC-CE includes at least one of the following:

[0065] a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal;

[0066] A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located;

[0067] A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource;

[0068] A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located;

[0069] A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located;

[0070] A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource;

[0071] A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource;

[0072] A frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

[0073] In a third aspect, an embodiment of the present application further provides a terminal, including a memory, a transceiver, and a processor:

[0074] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0075] An indication message sent by a network device is received, where the indication message is used to indicate a first channel state information reference signal CSI-RS.

[0076] In the case that the first CSI-RS is an unmeasured reference signal, based on an association relationship between the unmeasured CSI-RS and the measured CSI-RS, a target CSI-RS associated with the first CSI-RS is determined from the measured CSI-RS.

[0077] The target CSI-RS and a demodulation reference signal DMRS for uplink signal transmission and / or uplink channel transmission are co-located, and / or the target CSI-RS and a DMRS for downlink signal transmission and / or downlink channel transmission are co-located.

[0078] According to a terminal provided in an embodiment of the present application, the association relationship is determined based on the co-site address information QCL-info of the unmeasured CSI-RS, and the QCL-info includes an identifier of the measured CSI-RS;

[0079] and / or,

[0080] The association relationship is determined based on the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS, and a distance between the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS is less than a preset distance threshold.

[0081] According to a terminal provided by an embodiment of the present application, the processor is further configured to perform the following operations:

[0082] receiving an association indication message of the unmeasured CSI-RS sent by the network device, wherein the association indication message includes an identifier of the measured CSI-RS;

[0083] The association relationship is determined based on the identifier of the measured CSI-RS.

[0084] According to a terminal provided in an embodiment of the present application, the association indication message includes any of the following:

[0085] TCI status message;

[0086] Information elements;

[0087] Configuration information.

[0088] According to a terminal provided in an embodiment of the present application, the indication message includes any of the following:

[0089] A TCI status message including the first CSI-RS;

[0090] A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS;

[0091] Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

[0092] According to a terminal provided by an embodiment of the present application, the processor is further configured to perform the following operations:

[0093] receiving a resource indication message sent by the network device, where the resource indication message is used to indicate a target resource used by the terminal to report a measurement result;

[0094] Based on the target resource, reporting the measurement result to the network device;

[0095] The resource indication message includes any of the following:

[0096] activating a MAC-CE used by a secondary cell of the terminal;

[0097] Radio Resource Control RRC message;

[0098] The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

[0099] According to a terminal provided in an embodiment of the present application, the MAC-CE includes at least one of the following:

[0100] a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal;

[0101] A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located;

[0102] A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource;

[0103] A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located;

[0104] A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located;

[0105] A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource;

[0106] A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource;

[0107] A frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

[0108] In a fourth aspect, an embodiment of the present application further provides a network device, including a memory, a transceiver, and a processor:

[0109] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0110] An association relationship between the unmeasured CSI-RS and the measured CSI-RS is determined.

[0111] An indication message is sent to a terminal, where the indication message is used to indicate a first channel state information reference signal CSI-RS.

[0112] Among them, the association relationship is used to determine the target CSI-RS associated with the first CSI-RS, and the target CSI-RS has a co-site relationship with a demodulation reference signal for uplink signal transmission and / or uplink channel transmission, and / or has a co-site relationship with a DMRS for downlink signal transmission and / or downlink channel transmission.

[0113] According to a network device provided in an embodiment of the present application, the determining of the association relationship between the unmeasured CSI-RS and the measured CSI-RS includes:

[0114] determining whether the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS; and determining that the unmeasured CSI-RS has the association relationship with the measured CSI-RS when the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS;

[0115] and / or,

[0116] Determine that a distance between a time slot position where the unmeasured CSI-RS is located and a time slot position where the measured CSI-RS is located is less than a preset distance threshold; if the distance is less than the preset distance threshold, determine that the unmeasured CSI-RS and the measured CSI-RS have the association relationship.

[0117] According to a network device provided in an embodiment of the present application, the processor is further configured to perform the following operations:

[0118] An association indication message of the unmeasured CSI-RS is sent to the terminal, where the association indication message includes an identifier of the measured CSI-RS, and the association indication message is used to determine the association relationship.

[0119] According to a network device provided in an embodiment of the present application, the association indication message includes any of the following:

[0120] TCI status message;

[0121] Information elements;

[0122] Configuration information.

[0123] According to a network device provided in an embodiment of the present application, the indication message includes any one of the following:

[0124] A TCI status message including the first CSI-RS;

[0125] A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS;

[0126] Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

[0127] According to a network device provided in an embodiment of the present application, the processor is further configured to perform the following operations:

[0128] Sending a resource indication message to the terminal, where the resource indication message is used to indicate a target resource to be used by the terminal for reporting a measurement result;

[0129] The resource indication message includes any of the following:

[0130] activating a MAC-CE used by a secondary cell of the terminal;

[0131] Radio Resource Control RRC message;

[0132] The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

[0133] According to a network device provided in an embodiment of the present application, the MAC-CE includes at least one of the following:

[0134] a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal;

[0135] A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located;

[0136] A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource;

[0137] A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located;

[0138] A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located;

[0139] A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource;

[0140] A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource;

[0141] A frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

[0142] In a fifth aspect, an embodiment of the present application further provides a device for determining a reference signal, which is applied to a terminal, and the device includes:

[0143] The first receiving unit is used to receive an indication message sent by a network device, where the indication message is used to indicate a first channel state information reference signal CSI-RS.

[0144] The first processing unit is configured to determine, when the first CSI-RS is an unmeasured reference signal, a target CSI-RS associated with the first CSI-RS from among the measured CSI-RSs based on an association relationship between the unmeasured CSI-RSs and the measured CSI-RSs.

[0145] The target CSI-RS and a demodulation reference signal DMRS for uplink signal transmission and / or uplink channel transmission are co-located, and / or the target CSI-RS and a DMRS for downlink signal transmission and / or downlink channel transmission are co-located.

[0146] According to a device for determining a reference signal provided by an embodiment of the present application, the association relationship is determined based on the co-site address information QCL-info of the unmeasured CSI-RS, and the QCL-info includes an identifier of the measured CSI-RS;

[0147] and / or,

[0148] The association relationship is determined based on the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS, and a distance between the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS is less than a preset distance threshold.

[0149] According to a reference signal determination device provided in an embodiment of the present application, the device further includes a second receiving unit and a second processing unit:

[0150] The second receiving unit is configured to receive an association indication message of the unmeasured CSI-RS sent by the network device, wherein the association indication message includes an identifier of the measured CSI-RS;

[0151] The second processing unit is configured to determine the association relationship based on the identifier of the measured CSI-RS.

[0152] According to a device for determining a reference signal provided by an embodiment of the present application, the association indication message includes any one of the following:

[0153] TCI status message;

[0154] Information elements;

[0155] Configuration information.

[0156] According to a device for determining a reference signal provided by an embodiment of the present application, the indication message includes any one of the following:

[0157] A TCI status message including the first CSI-RS;

[0158] A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS;

[0159] Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

[0160] According to a reference signal determination device provided in an embodiment of the present application, the device further includes a third receiving unit and a reporting unit;

[0161] The third receiving unit is used to receive a resource indication message sent by the network device, where the resource indication message is used to indicate a target resource used by the terminal to report the measurement result;

[0162] The reporting unit is configured to report the measurement result to the network device based on the target resource;

[0163] The resource indication message includes any of the following:

[0164] activating a MAC-CE used by a secondary cell of the terminal;

[0165] Radio Resource Control RRC message;

[0166] The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

[0167] According to a device for determining a reference signal provided in an embodiment of the present application, the MAC-CE includes at least one of the following:

[0168] a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal;

[0169] A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located;

[0170] A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource;

[0171] A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located;

[0172] A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located;

[0173] A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource;

[0174] A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource;

[0175] A frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

[0176] In a sixth aspect, an embodiment of the present application further provides a reference signal determination device, which is applied to a network device, and the device includes:

[0177] The processing unit is used to determine the association relationship between the unmeasured CSI-RS and the measured CSI-RS.

[0178] The first sending unit is used to send an indication message to the terminal, where the indication message is used to indicate a first channel state information reference signal CSI-RS.

[0179] Among them, the association relationship is used to determine the target CSI-RS associated with the first CSI-RS, and the target CSI-RS has a co-site relationship with a demodulation reference signal for uplink signal transmission and / or uplink channel transmission, and / or has a co-site relationship with a DMRS for downlink signal transmission and / or downlink channel transmission.

[0180] According to a reference signal determination device provided in an embodiment of the present application, the determining of the association relationship between an unmeasured CSI-RS and a measured CSI-RS includes:

[0181] determining whether the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS; and determining that the unmeasured CSI-RS has the association relationship with the measured CSI-RS when the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS;

[0182] and / or,

[0183] Determine that a distance between a time slot position where the unmeasured CSI-RS is located and a time slot position where the measured CSI-RS is located is less than a preset distance threshold; if the distance is less than the preset distance threshold, determine that the unmeasured CSI-RS and the measured CSI-RS have the association relationship.

[0184] According to an embodiment of the present application, a device for determining a reference signal is provided, the device further comprising:

[0185] The second sending unit is used to send an association indication message of the unmeasured CSI-RS to the terminal, where the association indication message includes an identifier of the measured CSI-RS, and the association indication message is used to determine the association relationship.

[0186] According to a device for determining a reference signal provided by an embodiment of the present application, the association indication message includes any one of the following:

[0187] TCI status message;

[0188] Information elements;

[0189] Configuration information.

[0190] According to a device for determining a reference signal provided by an embodiment of the present application, the indication message includes any one of the following:

[0191] A TCI status message including the first CSI-RS;

[0192] A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS;

[0193] Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

[0194] According to a device for determining a reference signal provided by an embodiment of the present application, the device also includes a third sending unit.

[0195] The third sending unit is used to send a resource indication message to the terminal, where the resource indication message is used to indicate a target resource used by the terminal to report a measurement result;

[0196] The resource indication message includes any of the following:

[0197] activating a MAC-CE used by a secondary cell of the terminal;

[0198] Radio Resource Control RRC message;

[0199] The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

[0200] According to a device for determining a reference signal provided in an embodiment of the present application, the MAC-CE includes at least one of the following:

[0201] a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal;

[0202] A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located;

[0203] A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource;

[0204] A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located;

[0205] A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located;

[0206] A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource;

[0207] A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource;

[0208] A frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

[0209] In the seventh aspect, an embodiment of the present application further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the method for determining the reference signal described in any one of the first aspect above; or, to execute the method for determining the reference signal described in any one of the second aspect above.

[0210] The reference signal determination method and device provided in an embodiment of the present application include: receiving an indication message sent by a network device, the indication message being used to indicate a first channel state information reference signal CSI-RS; when the first CSI-RS is an unmeasured reference signal, determining a target CSI-RS associated with the first CSI-RS from the measured CSI-RS based on an association relationship between the unmeasured CSI-RS and the measured CSI-RS; wherein the target CSI-RS has a co-site relationship with a demodulation reference signal DMRS for uplink signal transmission and / or uplink channel transmission, and / or the target CSI-RS has a co-site relationship with a DMRS for downlink signal transmission and / or downlink channel transmission. In this way, even if the reference signal indicated by the network device is an unmeasured reference signal, the terminal can determine the target CSI-RS from the measured CSI-RS based on the association relationship between the unmeasured CSI-RS and the measured CSI-RS, so that the terminal can perform uplink transmission and / or downlink transmission based on the receiving beam of the measured target CSI-RS, thereby ensuring subsequent normal uplink and / or downlink transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0211] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0212] Figure 1 A schematic diagram of a flow chart of a method for determining a reference signal provided in an embodiment of the present application;

[0213] Figure 2A schematic diagram of a beam measurement result feedback timeline provided in an embodiment of the present application;

[0214] Figure 3 A schematic diagram of an activation signaling provided in an embodiment of the present application;

[0215] Figure 4 A schematic diagram of a flow chart of another method for determining a reference signal provided in an embodiment of the present application;

[0216] Figure 5 A schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0217] Figure 6 A schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0218] Figure 7 One of the structural schematic diagrams of the device for determining a reference signal provided in an embodiment of the present application;

[0219] Figure 8 The second structural diagram of the device for determining a reference signal provided in an embodiment of the present application. DETAILED DESCRIPTION

[0220] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0221] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0222] The technical solution provided in the embodiments of the present application can be applicable to a variety of systems, such as a 5G system.

[0223] Among them, the terminal involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal may also be different. For example, in a 5G system, the terminal may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0224] The network device involved in the embodiment of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (Home evolved Node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0225] For example, in an embodiment of the present application, one or more antennas may be used between the network device and the terminal device for multiple input multiple output (MIMO) transmission, and the MIMO transmission may be single user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of the antenna combination, the MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it may be diversity transmission, precoded transmission or beamforming transmission, etc.

[0226] In the existing FR1+FR2 CA scenario, in order to save energy for the terminal, the FR2 Scell ​​may not always be in an activated state. The FR2 Scell ​​needs to execute the AGC1 process, AGC2 process, coarse synchronization process, and L1 measurement process in sequence from the inactive state to the active state. During the L1 measurement process, the base station usually indicates a channel state information reference signal (CSI-RS) to the terminal. The receiving beam of the CSI-RS is used to indicate subsequent uplink transmission and / or downlink transmission; correspondingly, after receiving the CSI-RS indicated by the base station, the terminal performs subsequent uplink transmission and / or downlink transmission based on the receiving beam of the CSI-RS. Its specific implementation may include:

[0227] Step 1: The base station configures the terminal to feedback the beam measurement results through high-level signaling (CSI-ReportConfig), and configures resources for the terminal for beam measurement.

[0228] Step 2: If the reference signal resource used for beam measurement is a periodic CSI-RS, after receiving the radio resource control (RRC) configuration from the base station, the terminal receives the configured CSI-RS on the indicated time / frequency resources and measures the L1 reference signal receiving power (L1-Reference Signal Receiving Power, L1-RSRP).

[0229] If the reference signal resource used for beam measurement is semi-persistent CSI-RS, after receiving the RRC configuration and media access control control element (MAC-CE) trigger signaling from the base station, the terminal receives and measures L1-RSRP of the configured CSI-RS on the time / frequency resources configured by the base station until receiving the deactivated MAC-CE signaling.

[0230] If the reference signal resource used for beam measurement is a non-periodic CSI-RS, after receiving the L1 downlink control information (DCI) 0_1 / 0_2 trigger signaling, the terminal receives and measures the configured CSI-RS according to the time and frequency resources indicated in the base station DCI signaling.

[0231] Step 3: The terminal provides feedback on the beam measurement content. The uplink resources used for the feedback are configured through high-level signaling (periodic or semi-continuous measurement resources) or DCI indication (non-periodic measurement resources).

[0232] The beam measurement feedback adopts differential feedback, including a 7-bit absolute value L1-RSRP and N 4-bit differential L1-RSRP values. The differential L1-RSRP value is obtained by differentiating the other L1-RSRP values ​​except the first L1-RSRP value from the first absolute value L1-RSRP (7 bits).

[0233] Step 4: The base station updates the TCI status of the terminal based on the feedback from the terminal.

[0234] Step 5. The terminal performs subsequent uplink transmission and / or downlink transmission according to the instructions of the base station and the receiving beam of the quasi co-location (QCL) type-D reference signal in the TCI state.

[0235] When the terminal performs subsequent uplink transmission and / or downlink transmission according to the receiving beam of the QCL type-D reference signal in the TCI state, if the QCL type-D source reference signal in the TCI state indicated by the base station is a reference signal measured by the terminal, the terminal can directly perform subsequent uplink transmission and / or downlink transmission based on the receiving beam of the QCL type-D source reference signal; if the QCL type-D source reference signal in the TCI state indicated by the base station is a reference signal not measured by the terminal, the terminal cannot determine which receiving beam to use for subsequent uplink transmission and / or downlink transmission.

[0236] In order to enable the terminal to perform subsequent normal uplink and / or downlink transmission based on the reference signal indicated by the base station, an embodiment of the present application provides a method for determining a reference signal, and it can be considered to pre-establish an association relationship between an unmeasured CSI-RS and a measured CSI-RS. In this way, even if the TCI state indicated by the base station includes a normal CSI-RS that is not measured by the terminal as a QCL type-D, the terminal can also determine the target CSI-RS from the measured CSI-RS as the QCL type-D based on the association relationship between the unmeasured CSI-RS and the measured CSI-RS, and use the receiving beam of the measured target CSI-RS for uplink transmission and / or downlink transmission, thereby ensuring subsequent normal uplink and / or downlink transmission.

[0237] Below, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0238] Figure 1 A flow chart of a method for determining a reference signal provided in an embodiment of the present application is provided, and the method for determining a reference signal can be applied to a terminal. For example, see Figure 1 As shown, the method for determining the reference signal may include:

[0239] S101. A terminal receives an indication message sent by a network device, where the indication message is used to indicate a first channel state information reference signal CSI-RS.

[0240] For example, in an embodiment of the present application, the indication message includes any of the following:

[0241] A TCI state message including a first CSI-RS;

[0242] A medium access control address control element MAC-CE, where the MAC-CE includes an identifier of the first CSI-RS;

[0243] Downlink control information DCI, where the DCI includes an identifier of the first CSI-RS.

[0244] It can be understood that in the embodiments of the present application, the indication message includes a TCI status message, a MAC-CE or a DCI as an example for illustration, and it can also be other indication messages, which can be specifically set according to actual needs.

[0245] For example, in an embodiment of the present application, when the indication message is a TCI status message, the TCI status message may include a first CSI-RS, so as to indicate the first CSI-RS to the terminal through the TCI status message.

[0246] For example, in an embodiment of the present application, when the indication message is MAC-CE, the MAC-CE may include an identifier of the first CSI-RS to indicate the first CSI-RS to the terminal through the identifier of the first CSI-RS.

[0247] For example, in an embodiment of the present application, when the indication message is DCI, the DCI may include an identifier of the first CSI-RS, so as to indicate the first CSI-RS to the terminal through the identifier of the first CSI-RS.

[0248] After the terminal determines the first CSI-RS based on the indication message, it can first determine whether the first CSI-RS is a reference signal that it has measured. If the first CSI-RS is a reference signal that the terminal has measured, the terminal can directly perform subsequent uplink transmission and / or downlink transmission based on the receive beam of the first CSI-RS; on the contrary, if the first CSI-RS is a reference signal that the terminal has not measured, the following S102 is executed:

[0249] S102: When the first CSI-RS is an unmeasured reference signal, the terminal determines a target CSI-RS associated with the first CSI-RS from the measured CSI-RSs based on an association relationship between the unmeasured CSI-RS and the measured CSI-RSs.

[0250] The target CSI-RS and a demodulation reference signal DMRS for uplink signal transmission and / or uplink channel transmission are co-located, and / or the target CSI-RS and a DMRS for downlink signal transmission and / or downlink channel transmission are co-located.

[0251] For example, it is assumed that the pre-established association relationship between the unmeasured CSI-RS and the measured CSI-RS includes: the unmeasured Normal CSI-RS1 corresponds to the measured TemporaryRS_for_BM1, the unmeasured Normal CSI-RS2 corresponds to the measured TemporaryRS_for_BM2, and the unmeasured Normal CSI-RS3 corresponds to the measured TemporaryRS_for_BM3. Assuming that the TCI state sent by the terminal receiving the network device includes the unmeasured reference signal normal CSI-RS1, that is, the first CSI-RS, then according to the preset association relationship, it can be determined that the measured target CSI-RS associated with normal CSI-RS1 is TemporaryRS_for_BM1, so that the subsequent terminal can use the receiving beam of the measured TemporaryRS_for_BM1 for uplink transmission and / or downlink transmission, thereby ensuring the subsequent normal uplink and / or downlink transmission.

[0252] It can be seen that in an embodiment of the present application, the terminal receives an indication message sent by a network device, and the indication message is used to indicate a first channel state information reference signal CSI-RS; when the first CSI-RS is an unmeasured reference signal, based on the association relationship between the unmeasured CSI-RS and the measured CSI-RS, the target CSI-RS associated with the first CSI-RS is determined from the measured CSI-RS; wherein the target CSI-RS has a co-site relationship with a demodulation reference signal DMRS for uplink signal transmission and / or uplink channel transmission, and / or the target CSI-RS has a co-site relationship with a DMRS for downlink signal transmission and / or downlink channel transmission. In this way, even if the reference signal indicated by the network device is an unmeasured reference signal, the terminal can determine the target CSI-RS from the measured CSI-RS based on the association relationship between the unmeasured CSI-RS and the measured CSI-RS, so that the terminal can perform uplink transmission and / or downlink transmission based on the receiving beam of the measured target CSI-RS, thereby ensuring the subsequent normal transmission of uplink and / or downlink.

[0253] Based on the above Figure 1 In the embodiment shown, in the embodiment of the present application, the association relationship between the above-mentioned unmeasured CSI-RS and the measured CSI-RS is determined by the network device, that is, the network device determines the association relationship between the unmeasured CSI-RS and the measured CSI-RS, and indicates it to the terminal, so that the terminal obtains the above-mentioned association relationship according to the instruction of the network device.

[0254] For example, in the embodiment of the present application, when the network device determines the association relationship between the unmeasured CSI-RS and the measured CSI-RS, it may include:

[0255] Determine whether the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS; when the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS, determine that there is an association relationship between the unmeasured CSI-RS and the measured CSI-RS.

[0256] and / or,

[0257] It is determined that a distance between a time slot position where an unmeasured CSI-RS is located and a time slot position where a measured CSI-RS is located is less than a preset distance threshold; if the distance is less than the preset distance threshold, it is determined that there is an association relationship between the unmeasured CSI-RS and the measured CSI-RS.

[0258] Among them, the value of the preset distance threshold can be set according to actual needs. Here, the embodiment of the present application does not make any specific restrictions on the value of the preset distance threshold.

[0259] It can be understood that when the network device determines the association relationship based on the co-site address information QCL-info of the unmeasured CSI-RS, the corresponding association relationship on the terminal side is determined based on the co-site address information QCL-info of the unmeasured CSI-RS, and QCL-info includes the identifier of the measured CSI-RS.

[0260] For example, if the QCL-info of the unmeasured normal CSI-RS1 configured by the network device includes the measured temporaryRS_for_BM1, temporaryRS_for_BM2, and temporaryRS_for_BM3, it means that the unmeasured normal CSI-RS1 is associated with temporaryRS_for_BM1, temporaryRS_for_BM2, and temporaryRS_for_BM3.

[0261] When the network device is based on the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS, correspondingly, the association relationship on the terminal side is determined based on the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS. When the distance between the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS is less than a preset distance threshold, it is determined that the unmeasured CSI-RS and the measured CSI-RS have an association relationship.

[0262] For example, the network device determines that the time slot position of the unmeasured normal CSI-RS1 is less than the preset distance threshold with the time slot positions of the measured temporaryRS_for_BM1, temporaryRS_for_BM2 and temporaryRS_for_BM3, then determines that the unmeasured normal CSI-RS1 is associated with temporaryRS_for_BM1, temporaryRS_for_BM2 and temporaryRS_for_BM3.

[0263] After the network device determines the association relationship between the unmeasured CSI-RS and the measured CSI-RS, it needs to indicate the association relationship between the unmeasured CSI-RS and the measured CSI-RS to the terminal. In this way, even if the reference signal indicated by the network device is an unmeasured reference signal, the terminal can determine the target CSI-RS from the measured CSI-RS based on the association relationship between the unmeasured CSI-RS and the measured CSI-RS, so that the terminal can perform uplink transmission and / or downlink transmission based on the receiving beam of the measured target CSI-RS, thereby ensuring the subsequent normal uplink and / or downlink transmission.

[0264] For example, when the network device indicates the association relationship between the unmeasured CSI-RS and the measured CSI-RS to the terminal, it can send an association indication message of the unmeasured CSI-RS to the terminal, where the association indication message includes the identifier of the measured CSI-RS; correspondingly, the terminal determines the association relationship between the unmeasured CSI-RS and the measured CSI-RS based on the identifier of the measured CSI-RS.

[0265] For example, in an embodiment of the present application, the association indication message includes any of the following:

[0266] TCI status message;

[0267] Information elements;

[0268] Configuration information.

[0269] The unmeasured CSI-RS and the measured CSI-RS use the same receiving beam.

[0270] For example, in an embodiment of the present application, when the network device indicates the association relationship between the unmeasured CSI-RS and the measured CSI-RS to the terminal through a TCI status message, the network device may send a TCI status message of the unmeasured CSI-RS to the terminal, and the TCI status message may include an identifier of the measured CSI-RS; correspondingly, after the terminal receives the TCI status message of the unmeasured CSI-RS, it determines that the unmeasured CSI-RS is associated with the measured CSI-RS based on the identifier of the measured CSI-RS included in the TCI status message of the unmeasured CSI-RS.

[0271] For example, assuming that the unmeasured CSI-RS is a normal CSI-RS and the measured CSI-RS is a Temporary RS for BM, the TCI state message of the unmeasured normal CSI-RS is configured with the measured Temporary RS for BM associated therewith, as shown below:

[0272]

[0273]

[0274] For example, in an embodiment of the present application, when the network device indicates the association relationship between the unmeasured CSI-RS and the measured CSI-RS to the terminal through an information element, the network device may send an information element including the unmeasured CSI-RS to the terminal, and the information element may include an identifier of the measured CSI-RS; correspondingly, after the terminal receives the information element including the unmeasured CSI-RS, it determines that the unmeasured CSI-RS is associated with the measured CSI-RS based on the identifier of the measured CSI-RS included in the information element including the unmeasured CSI-RS.

[0275] For example, assuming that the unmeasured CSI-RS is a normal CSI-RS and the measured CSI-RS is a Temporary RS for BM, the measured Temporary RS for BM is configured in an information element other than the TCI state message containing the unmeasured normal CSI-RS, as shown below:

[0276]

[0277]

[0278] For example, in an embodiment of the present application, when the network device indicates the association relationship between the unmeasured CSI-RS and the measured CSI-RS to the terminal through configuration information, the network device can send the configuration information of the unmeasured CSI-RS to the terminal, and the configuration information may include the identifier of the measured CSI-RS; correspondingly, after the terminal receives the configuration information of the unmeasured CSI-RS, it determines that the unmeasured CSI-RS is associated with the measured CSI-RS based on the identifier of the measured CSI-RS included in the configuration information of the unmeasured CSI-RS.

[0279] For example, assuming that the unmeasured CSI-RS is a normal CSI-RS and the measured CSI-RS is a Temporary RS for BM, the configuration information of the unmeasured normal CSI-RS is configured with the measured Temporary RS for BM associated therewith, as shown below:

[0280]

[0281] For example, please refer to the following Table 1. Assuming that the unmeasured normal CSI-RS1 is associated with the measured temporaryRS_for_BM1, the identifier of the measured temporaryRS_for_BM1 may be included in the configuration information of the unmeasured normal CSI-RS1; if the unmeasured normal CSI-RS2 is associated with the measured temporaryRS_for_BM2, the identifier of the measured temporaryRS_for_BM2 may be included in the configuration information of the unmeasured normal CSI-RS2; if the unmeasured normal CSI-RS3 is associated with the measured temporaryRS_for_BM3, the identifier of the measured temporaryRS_for_BM3 may be included in the configuration information of the unmeasured normal CSI-RS3.

[0282] Table 1

[0283] Unmeasured reference signal Measured reference signal normal CSI-RS1 temporaryRS_for_BM1 normal CSI-RS2 temporaryRS_for_BM2 normal CSI-RS3 temporaryRS_for_BM3

[0284] Among them, the unmeasured normal CSI-RS1 is associated with the measured temporaryRS_for_BM1, the unmeasured normal CSI-RS2 is associated with the measured temporaryRS_for_BM2, and the unmeasured normal CSI-RS3 is associated with the measured temporaryRS_for_BM3.

[0285] In this way, after the terminal determines the association relationship between the unmeasured CSI-RS and the measured CSI-RS based on the association indication message of the unmeasured CSI-RS sent by the network device, even if the reference signal indicated by the network device is an unmeasured reference signal, the terminal can determine the target CSI-RS from the measured CSI-RS based on the association relationship between the unmeasured CSI-RS and the measured CSI-RS, so that the terminal can perform uplink transmission and / or downlink transmission based on the receiving beam of the measured target CSI-RS, thereby ensuring subsequent normal uplink and / or downlink transmission.

[0286] In order to facilitate understanding of the method for determining a reference signal provided in an embodiment of the present application, the method for determining a reference signal provided in an embodiment of the present application will be described in detail below through the following two specific embodiments.

[0287] Example 1

[0288] In embodiment 1, the base station indicates a QCL type-D reference signal through a TCI state message, and the QCL type-D reference signal is an unmeasured reference signal. The entire reference signal determination process includes:

[0289] Step 1: The base station configures the terminal to feedback the beam measurement results through high-level signaling (CSI-ReportConfig), and configures resources for the terminal for beam measurement.

[0290] For example, when the base station configures the terminal to perform beam measurement, the configuration can be performed through the following field carrier. If the value of the configuration field carrier is 3, it indicates that the terminal performs beam measurement on the reference signal resources on CC3.

[0291]

[0292]

[0293] At the same time, the base station configures resources for beam measurement for the terminal through RRC. The resources may include a non-periodic TRS resource set and a TRS resource. The time offset of the trigger is configured in the configuration of the TRS resource. The configuration signaling is as follows:

[0294]

[0295] At the same time, the base station configures terminal TRS1 to be associated with CSI-RS1, TRS2 to be associated with CSI-RS2, and TRS3 to be associated with CSI-RS3.

[0296] Step 2: In the nth time slot, the base station sends a MAC CE for activating the secondary cell (Scell) to activate Scell3.

[0297] Step 3: In the n+mth time slot, the terminal performs HARQ / ACK feedback on the Pcell for the MAC CE signaling sent by the base station.

[0298] Step 4: The MAC CE of the Scell ​​activated in the n+kth time slot takes effect.

[0299] Step 5: In the pth time slot, the Pcell sends DCI format 0_1, and triggers the sending of non-periodic CSI-RS1, CSI-RS3 and the measurement report of the terminal through the CSIrequest field in DCI format0_1. The sending time of CSI-RS1 and CSI-RS3 is p+1, p+3; at the same time, the base station instructs the terminal to perform beam measurement reporting in the p+k2th time slot through the Time Domain Resource Allocation (TDRA) field in DCI format 0_1 ​​and the PUSCH-TimeDomainResourceAllocation field configured by RRC. The frequency domain resource allocation (FDRA) field is used to instruct the terminal to report the frequency domain resources for beam measurement. The configuration signaling is as follows:

[0300]

[0301] Step 6: The terminal receives CSI-RS1 and CSI-RS3 in the p+1 and p+3 time slots according to the instruction of the base station. The terminal estimates the L1-RSRP / L1-Signal to Interference plus Noise Ratio (SINR) of the received CSI-RS1 and CSI-RS3, and reports the measurement results in the p+7 (k2=7) time slot according to the instruction of the base station.

[0302] Among them, the feedback content is TRI1 (3 bits) + L1-RSRP1 (7 bits), TRI2 (3 bits) + L1-RSRP2 (4 bits), TRI3 (3 bits) + L1-RSRP3 (4 bits), TRI4 (3 bits) + L1-RSRP4 (4 bits).

[0303] Step 7: The base station indicates to the terminal the TCI state message transmitted by the physical downlink shared channel (PDSCH), where the reference signal of QCL-type D is CSI-RS1, and the indication signaling is as follows:

[0304]

[0305]

[0306] Step 8: The terminal receives an indication from the base station and determines that the reference signal of QCL-type D in the indicated TCI state message is CSI-RS1. When it is determined that the indicated reference signal CSI-RS1 is a measured reference signal, the receiving beam of CSI-RS1 is used to receive the subsequent PDSCH.

[0307] Alternatively, when it is determined that the indicated reference signal CSI-RS1 is an unmeasured reference signal, based on the association relationship between CSI-RS1 and TRS, as shown in the following Table 2, it is determined that the measured reference signal associated with the unmeasured CSI-RS1 is TRS1, and the receiving beam of TRS1 is used to receive the subsequent PDSCH.

[0308] Table 1

[0309] Unmeasured reference signal Measured reference signal normal CSI-RS1 TRS1 normal CSI-RS2 TRS2 normal CSI-RS3 TRS3

[0310] It can be seen that in the embodiment of the present application, the terminal obtains the association relationship between CSI-RS1 and TRS in advance. Therefore, even if the base station indicates an unmeasured CSI-RS1, the terminal can determine TRS1 from the measured TRS based on the association relationship between CSI-RS1 and TRS, and use the receiving beam of TRS1 to receive the subsequent PDSCH, thereby ensuring the normal reception of the subsequent PDSCH.

[0311] Example 2

[0312] In Embodiment 2, the base station indicates the unmeasured reference signal through MAC-CE or DCI, and the entire reference signal determination process includes:

[0313] It should be noted that in Example 2, steps 1 to 6 are the same as steps 1 to 6 in the above-mentioned Example 1. Please refer to the relevant descriptions of steps 1 to 6 in the above-mentioned Example 1, and the examples of the present application will not be repeated here.

[0314] Step 7. The base station indicates the PDSCH transmission beam to the terminal. The base station may send MAC-CE or DCI to the terminal. When sending MAC-CE, the MAC-CE includes the reference signal CSI-RS3; or, when sending DCI, the DCI includes the reference signal CSI-RS3 to indicate the reference signal CSI-RS3 to the terminal.

[0315] Step 8: When the terminal receives an instruction from the base station and determines that the indicated reference signal CSI-RS3 is a measured reference signal, it uses the receiving beam of CSI-RS3 to receive subsequent PDSCHs.

[0316] or,

[0317] When it is determined that the indicated reference signal CSI-RS3 is an unmeasured reference signal, according to the association relationship between CSI-RS3 and TRS, as shown in Table 2 above, it is determined that the measured reference signal associated with the unmeasured CSI-RS3 is TRS3, and the receiving beam of TRS3 is used to receive the subsequent PDSCH.

[0318] It can be seen that in the embodiment of the present application, the terminal obtains the association relationship between CSI-RS3 and TRS in advance. Therefore, even if the base station indicates an unmeasured CSI-RS3, the terminal can determine TRS3 from the measured TRS based on the association relationship between CSI-RS3 and TRS, and use the receiving beam of TRS3 to receive the subsequent PDSCH, thereby ensuring the normal reception of the subsequent PDSCH.

[0319] Based on any of the above embodiments, for example, before the network device sends a CSI-RS for indicating a first channel state information reference signal to the terminal, it usually receives a measurement result reported by the terminal, and then sends a CSI-RS for indicating a first channel state information reference signal to the terminal based on the measurement result reported by the terminal.

[0320] By way of example, in an embodiment of the present application, when a terminal reports measurement results to a network device, it may first receive a resource indication message sent by the network device, where the resource indication message is used to indicate a target resource for the terminal to report the measurement results; and based on the target resource, report the measurement results to the network device, so that the network device may send a CSI-RS to the terminal for indicating a first channel state information reference signal based on the measurement results reported by the terminal.

[0321] The resource indication message includes any of the following:

[0322] Activate the MAC-CE used by the secondary cell of the terminal;

[0323] Radio Resource Control RRC message;

[0324] The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

[0325] For example, in an embodiment of the present application, when the resource indication message includes the MAC-CE used for the secondary cell of the activated terminal, it can be understood that the network device indicates to the terminal the target resources used for reporting the measurement results through the MAC-CE used for the secondary cell of the activated terminal. In this case, the MAC-CE used for the secondary cell of the activated terminal may include relevant information of the target resources.

[0326] For example, the MAC-CE includes at least one of the following:

[0327] A carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal;

[0328] A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located;

[0329] A channel state information parameter, where the channel state information parameter is used to indicate a channel state of a target resource;

[0330] A time domain resource allocation parameter, where the time domain resource allocation parameter is used to indicate the time domain where the target resource is located;

[0331] A frequency domain resource allocation parameter, where the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located;

[0332] Modulation and coding strategy, where the modulation and coding strategy is used to indicate the modulation and coding strategy corresponding to the target resource;

[0333] Transmission power control instruction, the transmission power control instruction is used to indicate the closed-loop power control corresponding to the target resource;

[0334] Frequency hopping flag: The frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

[0335] By way of example, in an embodiment of the present application, the carrier indicator may be a Carrier indicator, the bandwidth part (Bandwidth Part, BWP) indicator may be a BWP indicator, the channel state information parameter (Channel State Information, CSI) may be a CSI-AperiodicTriggerState ID, the time domain resource allocation parameter may be a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) frequency resource allocation parameter may be a PUSCH time resource allocation, the modulation and coding strategy may be (Modulation and Coding Scheme, MCS), the transmission power control instruction may be (Transmit Power Control, TPC) command for PUSCH, and the frequency hopping flag may be a Frequency hopping flag.

[0336] For example, in an embodiment of the present application, when the resource indication message includes a radio resource control RRC message, it can be understood that the network device indicates to the terminal through the radio resource control RRC message the target resource used for reporting the measurement result. In this case, the radio resource control RRC message can be configured / reserved in advance for the terminal, and the radio resource control RRC message can include relevant information of the target resource, similar to the form of configured grant type1 / type2. For example, the ConfiguredGrantConfig includes PUSCH frequency domain resource allocation, PUSCH time domain resource allocation, MCS used for PUSCH transmission, TPC and frequency hopping flag, etc.

[0337] For example, in an embodiment of the present application, when the resource indication message includes a high-level configuration signaling, it can be understood that the network device indicates to the terminal through the high-level configuration signaling the target resource used for reporting the measurement result. In this case, the high-level configuration signaling may include a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in the time slot after the secondary cell of the terminal is activated. For example, if the resource parameter is X, it means that the Xth slot after the Scell ​​activation takes effect is the target resource for reporting the measurement result.

[0338] For example, when the network device indicates to the terminal the target resource used for reporting the measurement result, the specific process may include:

[0339] Step 1: The base station configures the terminal to feedback the beam measurement results through high-level signaling. The configuration signaling is as follows, where the carrier field is configured as CC2 (Scell), indicating that the terminal performs beam measurement on the resources on the Scell, including indicating the measurement result feedback method and the target resource used for reporting the measurement results.

[0340] The measurement result feedback mode can be configured through the reportConfigType field, that is, the measurement result feedback is configured through the reportConfigType field as periodic, semi-continuous or aperiodic feedback, as shown below:

[0341]

[0342]

[0343] The configuration of the target resource used for reporting the measurement results may be as follows:

[0344]

[0345]

[0346] Step 2: In time slot n, the base station sends MAC CE signaling to activate the Scell ​​and triggers the transmission of TRS on the Scell. The TRS transmission triggered by the base station can be N repeated transmissions of a TRS resource set (corresponding to N slots) or the transmission of each resource in a TRS resource set in different slots.

[0347] Step 3: The terminal performs HARQ / ACK feedback on the Pcell for the MAC CE signaling sent by the base station.

[0348] Step 4: MAC CE signaling for activating the Scell / triggering the TRS on the Scell ​​takes effect in time slot n+k.

[0349] Step 5: The terminal receives the TRS sent by the base station using different beams in time slots n+k+m1 and n+k+m2, and calculates L1-RSRP for the received TRS.

[0350] Step 6: The terminal feeds back the measurement result in the Xth slot after the Scell ​​activation takes effect. The value of X is configured to the terminal through high-level signaling, such as RRC signaling. For example, see Figure 2 As shown, Figure 2 A schematic diagram of a beam measurement result feedback timeline provided in an embodiment of the present application, wherein the number of time slots between the beam reporting time and the reception of TemporaryRS for BM is not less than Z. Z depends on the terminal capability.

[0351] In order to facilitate understanding of the reporting process of the above measurement results, it can be described through the following embodiments 3 and 4.

[0352] Example 3

[0353] In Embodiment 3, the configuration of the base station is: reporting the measurement result in the Xth slot after the MAC CE for activating the Scell / trigger TRS takes effect. The specific process may include:

[0354] Step 1. The base station configures the terminal to feedback the beam measurement results through high-level signaling. The configuration signaling is as follows, where the carrier field is configured to 3, indicating that the terminal performs beam measurement on the resources on CC3. The base station configures the beam measurement feedback to be aperiodic feedback through the reportConfigType field, and the feedback time offset m is configured to the terminal through the reportSlotOffset_Scell ​​field, as shown below:

[0355]

[0356]

[0357] The target resource used for reporting the measurement result is a reference signal TRS resource set, and the reference signal TRS resource set includes a repetition number N=8, as shown below:

[0358]

[0359] Step 2: In the nth slot, the base station sends a MAC CE to activate Scell ​​3. For activation signaling, see Figure 3 As shown, Figure 3 A schematic diagram of an activation signaling provided in an embodiment of the present application, the activation signaling simultaneously activates the transmission of 8 TRS resource sets in the Scell ​​or 8 repeated transmissions of 1 TRS resource set, and the time offset (offset_1, offset_2, offset_3, offset_4, offset_5, offset_6, offset_7, offset_8) of each TemporaryRS for BM resource set is configured to the terminal through RRC. At the same time, the uplink PUSCH time / frequency resources and MCS and TPC indications for the terminal to perform measurement feedback are included in the MAC CE activation signaling.

[0360] Among them, the NZP-CSI-RS-ResourceSet specifically corresponding to the activated TemporaryRS for BM is indicated by the parameter scellActivationRS-Id-r17 configured by RRC, as shown below:

[0361]

[0362] For example, in the embodiment of the present application, the PUSCH time domain / frequency domain resources indicated in the MAC-CE may refer to the following Table 2:

[0363] Table 2

[0364] ul grant field Binary digits Frequency Hopping Flag 1 Time domain resource allocation parameters 00000100010001 Frequency domain resource allocation parameters 0010 Modulation and Coding Strategy 8 Transmit power control command 011

[0365] Step 3: The terminal performs HARQ / ACK feedback on the PCell for the MAC CE signaling sent by the base station.

[0366] Step 4: Activate the SCell / trigger the MAC CE signaling of the TRS on the SCell and take effect in time slot n+k.

[0367] Step 5: The terminal receives NZP-CSI-RS-ResourceSet3 at n+k+offset_1, n+k+offset_2, n+k+offset_3, …, n+k+offset_8 according to the instruction of the base station, and calculates L1-RSRP for the received TemporaryRS for BM.

[0368] Step 6: According to the instruction of the base station, the terminal feeds back the beam measurement result in the fifth slot after the Scell ​​activation takes effect. For example, see the above Figure 3 As shown, the number of time slots between the beam reporting time and the reception of TemporaryRS for BM is not less than Z, where Z depends on the terminal capability.

[0369] Step 7: The terminal reports the measured L1-RSRP according to the time domain / frequency domain resources, MCS and TPC command of the PUSCH indicated by the base station.

[0370] The reported content includes a 7-bit L1-RSRP absolute value and three 4-bit L1-RSRP differential values. The differential value is obtained by differentiating other L1-RSRP measurement values ​​relative to the 7-bit L1-RSRP absolute value, thereby realizing the reporting of the measurement results.

[0371] Example 4

[0372] In Embodiment 3, the configuration of the base station is: reporting the measurement result in the qth time offset time slot of the time slot where the DCI of the trigger non-periodic TemporaryRS for BM is located. The specific process may include:

[0373] Step 1: The base station configures the terminal to perform beam measurement result feedback through high-level signaling. The configuration signaling is as follows, where the carrier field is configured to 3, indicating that the terminal performs beam measurement on the resources on CC3, as shown below:

[0374]

[0375]

[0376] At the same time, the base station configures the non-periodic TemporaryRS for BM resource set and TemporaryRS for BM resources for the terminal through RRC, and configures the time offset of the trigger in the configuration of TemporaryRS for BM resources. The configuration signaling is as follows:

[0377]

[0378]

[0379]

[0380] Step 2: In the nth slot, the base station sends a MAC CE for activating Scell, thereby activating Scell3.

[0381] Step 3: In the (n+m)th slot, the terminal performs HARQ / ACK feedback on the Pcell for the MAC CE signaling sent by the base station.

[0382] Step 4: The MAC CE signaling for activating the Scell ​​takes effect in the n+kth time slot.

[0383] Step 5: In the pth slot, the Pcell sends DCI format 0_1, and triggers the sending of aperiodic CSI-RS1 and CSI-RS3 and the measurement reporting of the terminal through the CSIrequest field in DCI format0_1.

[0384] Among them, the sending time of CSI-RS1 and CSI-RS3 is p+1, p+3. At the same time, the network instructs the terminal to perform beam measurement reporting time slot p+k2 through the TDRA (TimeDomainResourceAllocation) field in DCI format0_1 and the PUSCH-TimeDomainResourceAllocation field configured by RRC. The FDRA (FrequencyDomainResourceAllocation) field is used to instruct the terminal to report the frequency domain resources for beam measurement, as shown below:

[0385]

[0386] Step 6: The terminal receives CSI-RS1 and CSI-RS3 in the p+1th and p+3th time slots according to the instruction of the base station.

[0387] Step 7: The terminal estimates L1-RSRP / L1-SINR for the received CSI-RS1 and CSI-RS3, and reports the measurement result in the p+7 (k2=7)th slot according to the instruction of the base station.

[0388] The reported content includes a 7-bit L1-RSRP absolute value and three 4-bit L1-RSRP differential values. The differential value is obtained by differentiating other L1-RSRP measurement values ​​relative to the 7-bit L1-RSRP absolute value, thereby realizing the reporting of the measurement results.

[0389] Figure 4 A flowchart of another reference signal determination method provided in an embodiment of the present application is provided. The reference signal determination method can be applied to a network device. For example, see Figure 4 As shown, the method for determining the reference signal may include:

[0390] S401: Determine an association relationship between an unmeasured CSI-RS and a measured CSI-RS.

[0391] S402. Send an indication message to the terminal, where the indication message is used to indicate a first channel state information reference signal CSI-RS.

[0392] Among them, the association relationship is used to determine the target CSI-RS associated with the first CSI-RS, and the target CSI-RS has a co-site relationship with a demodulation reference signal for uplink signal transmission and / or uplink channel transmission, and / or has a co-site relationship with a DMRS for downlink signal transmission and / or downlink channel transmission.

[0393] For example, in the embodiment of the present application, determining the association relationship between the unmeasured CSI-RS and the measured CSI-RS includes:

[0394] determining whether the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS; and determining that the unmeasured CSI-RS has the association relationship with the measured CSI-RS when the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS;

[0395] and / or,

[0396] Determine that a distance between a time slot position where the unmeasured CSI-RS is located and a time slot position where the measured CSI-RS is located is less than a preset distance threshold; if the distance is less than the preset distance threshold, determine that the unmeasured CSI-RS and the measured CSI-RS have the association relationship.

[0397] For example, in an embodiment of the present application, the method for determining a reference signal further includes:

[0398] An association indication message of the unmeasured CSI-RS is sent to the terminal, where the association indication message includes an identifier of the measured CSI-RS, and the association indication message is used to determine the association relationship.

[0399] For example, in an embodiment of the present application, the association indication message includes any of the following:

[0400] TCI status message;

[0401] Information elements;

[0402] Configuration information.

[0403] For example, in an embodiment of the present application, the indication message includes any of the following:

[0404] A TCI status message including the first CSI-RS;

[0405] A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS;

[0406] Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

[0407] For example, in an embodiment of the present application, the method further includes:

[0408] Sending a resource indication message to the terminal, where the resource indication message is used to indicate a target resource to be used by the terminal for reporting a measurement result;

[0409] The resource indication message includes any of the following:

[0410] activating a MAC-CE used by a secondary cell of the terminal;

[0411] Radio Resource Control RRC message;

[0412] The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

[0413] For example, in an embodiment of the present application, the MAC-CE includes at least one of the following:

[0414] a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal;

[0415] A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located;

[0416] A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource;

[0417] A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located;

[0418] A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located;

[0419] A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource;

[0420] A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource;

[0421] A frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

[0422] It can be seen that in an embodiment of the present application, the network device determines the association relationship between the unmeasured CSI-RS and the measured CSI-RS, and sends an indication message to the terminal, where the indication message is used to indicate the first channel state information reference signal CSI-RS, so that the terminal can determine the target CSI-RS associated with the first CSI-RS from the measured CSI-RS based on the association relationship between the unmeasured CSI-RS and the measured CSI-RS; wherein the target CSI-RS has a co-site relationship with the demodulation reference signal DMRS for uplink signal transmission and / or uplink channel transmission, and / or the target CSI-RS has a co-site relationship with the DMRS for downlink signal transmission and / or downlink channel transmission. In this way, even if the reference signal indicated by the network device is an unmeasured reference signal, the terminal can determine the target CSI-RS from the measured CSI-RS based on the association relationship between the unmeasured CSI-RS and the measured CSI-RS, so that the terminal can perform uplink transmission and / or downlink transmission based on the receiving beam of the measured target CSI-RS, thereby ensuring subsequent normal uplink and / or downlink transmission.

[0423] Figure 5 A schematic diagram of the structure of a terminal provided in an embodiment of the present application, such as Figure 5 As shown, the terminal includes a memory 520, a transceiver 500, and a processor 510, wherein:

[0424] The memory 520 is used to store computer programs; the transceiver 300 is used to send and receive data under the control of the processor 510; the processor 510 is used to read the computer program in the memory 520 and perform the following operations:

[0425] receiving an indication message sent by a network device, where the indication message is used to indicate a first channel state information reference signal CSI-RS;

[0426] In a case where the first CSI-RS is an unmeasured reference signal, determining a target CSI-RS associated with the first CSI-RS from the measured CSI-RS based on an association relationship between the unmeasured CSI-RS and the measured CSI-RS;

[0427] The target CSI-RS and a demodulation reference signal DMRS for uplink signal transmission and / or uplink channel transmission are co-located, and / or the target CSI-RS and a DMRS for downlink signal transmission and / or downlink channel transmission are co-located.

[0428] Specifically, the transceiver 500 is used to receive and send data under the control of the processor 510.

[0429] Among them, Figure 5 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 510 and various circuits of memory represented by memory 520 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 500 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and other transmission media. For different user devices, the user interface 550 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0430] The processor 510 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 510 when performing operations.

[0431] Optionally, the processor 510 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD), and the processor may also adopt a multi-core architecture.

[0432] The processor calls the computer program stored in the memory to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0433] For example, in an embodiment of the present application, the association relationship is determined based on the co-site address information QCL-info of the unmeasured CSI-RS, and the QCL-info includes an identifier of the measured CSI-RS;

[0434] and / or,

[0435] The association relationship is determined based on the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS, and a distance between the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS is less than a preset distance threshold.

[0436] For example, in the embodiment of the present application, the processor is further configured to perform the following operations:

[0437] receiving an association indication message of the unmeasured CSI-RS sent by the network device, wherein the association indication message includes an identifier of the measured CSI-RS;

[0438] The association relationship is determined based on the identifier of the measured CSI-RS.

[0439] For example, in an embodiment of the present application, the association indication message includes any of the following:

[0440] TCI status message;

[0441] Information elements;

[0442] Configuration information.

[0443] For example, in an embodiment of the present application, the indication message includes any of the following:

[0444] A TCI status message including the first CSI-RS;

[0445] A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS;

[0446] Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

[0447] For example, in the embodiment of the present application, the processor is further configured to perform the following operations:

[0448] receiving a resource indication message sent by the network device, where the resource indication message is used to indicate a target resource used by the terminal to report a measurement result;

[0449] Based on the target resource, reporting the measurement result to the network device;

[0450] The resource indication message includes any of the following:

[0451] activating a MAC-CE used by a secondary cell of the terminal;

[0452] Radio Resource Control RRC message;

[0453] The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

[0454] For example, in an embodiment of the present application, the MAC-CE includes at least one of the following:

[0455] a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal;

[0456] A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located;

[0457] A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource;

[0458] A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located;

[0459] A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located;

[0460] A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource;

[0461] A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource;

[0462] A frequency hopping flag is used to indicate whether the target resource uses frequency modulation. It should be noted that the terminal provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the terminal, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

[0463] Figure 6 A schematic diagram of the structure of a network device provided in an embodiment of the present application is shown in FIG. Figure 6 As shown, the network device includes a memory 620, a transceiver 600, and a processor 610, wherein:

[0464] The memory 620 is used to store computer programs; the transceiver 600 is used to send and receive data under the control of the processor 610; the processor 610 is used to read the computer program in the memory 620 and perform the following operations:

[0465] Determine an association relationship between an unmeasured CSI-RS and a measured CSI-RS;

[0466] Sending an indication message to a terminal, where the indication message is used to indicate a first channel state information reference signal CSI-RS;

[0467] Among them, the association relationship is used to determine the target CSI-RS associated with the first CSI-RS, and the target CSI-RS has a co-site relationship with a demodulation reference signal for uplink signal transmission and / or uplink channel transmission, and / or has a co-site relationship with a DMRS for downlink signal transmission and / or downlink channel transmission.

[0468] Specifically, the transceiver 600 is used to receive and send data under the control of the processor 610 .

[0469] Among them, Figure 6 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 610 and memory represented by memory 620. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 600 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium may include a wireless channel, a wired channel, an optical cable, and the like. The processor 610 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 610 when performing operations.

[0470] The processor 610 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0471] For example, in the embodiment of the present application, determining the association relationship between the unmeasured CSI-RS and the measured CSI-RS includes:

[0472] determining whether the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS; and determining that the unmeasured CSI-RS has the association relationship with the measured CSI-RS when the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS;

[0473] and / or,

[0474] Determine that a distance between a time slot position where the unmeasured CSI-RS is located and a time slot position where the measured CSI-RS is located is less than a preset distance threshold; if the distance is less than the preset distance threshold, determine that the unmeasured CSI-RS and the measured CSI-RS have the association relationship.

[0475] For example, in the embodiment of the present application, the processor is further configured to perform the following operations:

[0476] An association indication message of the unmeasured CSI-RS is sent to the terminal, where the association indication message includes an identifier of the measured CSI-RS, and the association indication message is used to determine the association relationship.

[0477] For example, in an embodiment of the present application, the association indication message includes any of the following:

[0478] TCI status message;

[0479] Information elements;

[0480] Configuration information.

[0481] For example, in an embodiment of the present application, the indication message includes any of the following:

[0482] A TCI status message including the first CSI-RS;

[0483] A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS;

[0484] Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

[0485] For example, in the embodiment of the present application, the processor is further configured to perform the following operations:

[0486] Sending a resource indication message to the terminal, where the resource indication message is used to indicate a target resource to be used by the terminal for reporting a measurement result;

[0487] The resource indication message includes any of the following:

[0488] activating a MAC-CE used by a secondary cell of the terminal;

[0489] Radio Resource Control RRC message;

[0490] The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

[0491] For example, in an embodiment of the present application, the MAC-CE includes at least one of the following:

[0492] a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal;

[0493] A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located;

[0494] A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource;

[0495] A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located;

[0496] A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located;

[0497] A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource;

[0498] A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource;

[0499] A frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

[0500] It should be noted here that the above-mentioned network device provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the network device, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0501] In addition, the embodiment of the present application further provides a device for determining a reference signal, so that the terminal can perform subsequent uplink / downlink transmission based on the reference signal indicated by the base station. It can be understood that the device for determining a reference signal and the method for determining a reference signal are based on the same application concept, and the principles for solving the problem are similar. Therefore, the implementation of the device for determining a reference signal and the method for determining a reference signal can refer to each other, and the repeated parts will not be repeated.

[0502] The present application also provides a reference signal determination device, which is applied to a terminal. For example, see Figure 7 As shown, Figure 7 This is one of the structural diagrams of a reference signal determination device provided in an embodiment of the present application. The reference signal determination device 70 may include:

[0503] A first receiving unit 701 is configured to receive an indication message sent by a network device, where the indication message is used to indicate a first channel state information reference signal CSI-RS;

[0504] The first processing unit 702 is configured to determine, when the first CSI-RS is an unmeasured reference signal, a target CSI-RS associated with the first CSI-RS from the measured CSI-RS based on an association relationship between the unmeasured CSI-RS and the measured CSI-RS;

[0505] The target CSI-RS and a demodulation reference signal DMRS for uplink signal transmission and / or uplink channel transmission are co-located, and / or the target CSI-RS and a DMRS for downlink signal transmission and / or downlink channel transmission are co-located.

[0506] For example, in an embodiment of the present application, the association relationship is determined based on the co-site address information QCL-info of the unmeasured CSI-RS, and the QCL-info includes an identifier of the measured CSI-RS;

[0507] and / or,

[0508] The association relationship is determined based on the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS, and a distance between the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS is less than a preset distance threshold.

[0509] For example, in the embodiment of the present application, the reference signal determination device further includes a second receiving unit and a second processing unit:

[0510] The second receiving unit is configured to receive an association indication message of the unmeasured CSI-RS sent by the network device, wherein the association indication message includes an identifier of the measured CSI-RS;

[0511] The second processing unit is configured to determine the association relationship based on the identifier of the measured CSI-RS.

[0512] For example, in an embodiment of the present application, the association indication message includes any of the following:

[0513] TCI status message;

[0514] Information elements;

[0515] Configuration information.

[0516] For example, in an embodiment of the present application, the indication message includes any of the following:

[0517] A TCI status message including the first CSI-RS;

[0518] A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS;

[0519] Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

[0520] By way of example, in the embodiment of the present application, the reference signal determination device 70 further includes a third receiving unit and a reporting unit.

[0521] The third receiving unit is used to receive a resource indication message sent by the network device, where the resource indication message is used to indicate a target resource used by the terminal to report the measurement result;

[0522] The reporting unit is configured to report the measurement result to the network device based on the target resource;

[0523] The resource indication message includes any of the following:

[0524] activating a MAC-CE used by a secondary cell of the terminal;

[0525] Radio Resource Control RRC message;

[0526] The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

[0527] For example, in an embodiment of the present application, the MAC-CE includes at least one of the following:

[0528] a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal;

[0529] A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located;

[0530] A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource;

[0531] A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located;

[0532] A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located;

[0533] A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource;

[0534] A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource;

[0535] A frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

[0536] It should be noted here that the reference signal determination device 70 provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the terminal, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

[0537] The present application also provides a reference signal determination device, which is applied to a network device. For example, see Figure 8 As shown, Figure 8 The second structural diagram of the device for determining a reference signal provided in an embodiment of the present application, the device for determining a reference signal 80 may include:

[0538] The processing unit 801 is configured to determine an association relationship between an unmeasured CSI-RS and a measured CSI-RS.

[0539] The first sending unit 802 is configured to send an indication message to a terminal, where the indication message is used to indicate a first channel state information reference signal CSI-RS.

[0540] Among them, the association relationship is used to determine the target CSI-RS associated with the first CSI-RS, and the target CSI-RS has a co-site relationship with a demodulation reference signal for uplink signal transmission and / or uplink channel transmission, and / or has a co-site relationship with a DMRS for downlink signal transmission and / or downlink channel transmission.

[0541] For example, in the embodiment of the present application, determining the association relationship between the unmeasured CSI-RS and the measured CSI-RS includes:

[0542] determining whether the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS; and determining that the unmeasured CSI-RS has the association relationship with the measured CSI-RS when the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS;

[0543] and / or,

[0544] Determine that a distance between a time slot position where the unmeasured CSI-RS is located and a time slot position where the measured CSI-RS is located is less than a preset distance threshold; if the distance is less than the preset distance threshold, determine that the unmeasured CSI-RS and the measured CSI-RS have the association relationship.

[0545] For example, in the embodiment of the present application, the reference signal determination device further includes:

[0546] The second sending unit is used to send an association indication message of the unmeasured CSI-RS to the terminal, where the association indication message includes an identifier of the measured CSI-RS, and the association indication message is used to determine the association relationship.

[0547] For example, in an embodiment of the present application, the association indication message includes any of the following:

[0548] TCI status message;

[0549] Information elements;

[0550] Configuration information.

[0551] For example, in an embodiment of the present application, the indication message includes any of the following:

[0552] A TCI status message including the first CSI-RS;

[0553] A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS;

[0554] Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

[0555] By way of example, in the embodiment of the present application, the reference signal determination device 80 further includes a third sending unit.

[0556] The third sending unit is used to send a resource indication message to the terminal, where the resource indication message is used to indicate a target resource used by the terminal to report a measurement result;

[0557] The resource indication message includes any of the following:

[0558] activating a MAC-CE used by a secondary cell of the terminal;

[0559] Radio Resource Control RRC message;

[0560] The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

[0561] For example, in an embodiment of the present application, the MAC-CE includes at least one of the following:

[0562] a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal;

[0563] A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located;

[0564] A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource;

[0565] A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located;

[0566] A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located;

[0567] A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource;

[0568] A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource;

[0569] A frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

[0570] It should be noted here that the above-mentioned reference signal determination device 80 provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is a network device, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

[0571] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0572] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0573] On the other hand, an embodiment of the present application also provides a processor-readable storage medium, which stores a computer program, and the computer program is used to enable the processor to execute the methods provided by the above embodiments, including: receiving an indication message sent by a network device, the indication message is used to indicate a first channel state information reference signal CSI-RS; when the first CSI-RS is an unmeasured reference signal, based on the association relationship between the unmeasured CSI-RS and the measured CSI-RS, determining a target CSI-RS associated with the first CSI-RS from the measured CSI-RS; wherein the target CSI-RS has a co-site relationship with a demodulation reference signal DMRS for uplink signal transmission and / or uplink channel transmission, and / or the target CSI-RS has a co-site relationship with a DMRS for downlink signal transmission and / or downlink channel transmission.

[0574] or,

[0575] Determine an association relationship between an unmeasured CSI-RS and a measured CSI-RS; send an indication message to a terminal, where the indication message is used to indicate a first channel state information reference signal CSI-RS; wherein the association relationship is used to determine a target CSI-RS associated with the first CSI-RS, and the target CSI-RS has a co-site relationship with a demodulation reference signal for uplink signal transmission and / or uplink channel transmission, and / or has a co-site relationship with a DMRS for downlink signal transmission and / or downlink channel transmission.

[0576] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

[0577] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0578] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0579] These processor executable instructions may also be stored in a processor readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0580] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0581] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for determining a reference signal, characterized in that: Applied to a terminal, the method comprises: receiving an indication message sent by a network device, where the indication message is used to indicate a first channel state information reference signal CSI-RS; In a case where the first CSI-RS is an unmeasured reference signal, determining a target CSI-RS associated with the first CSI-RS from the measured CSI-RS based on an association relationship between the unmeasured CSI-RS and the measured CSI-RS; The target CSI-RS and a demodulation reference signal DMRS for uplink signal transmission and / or uplink channel transmission are co-located, and / or the target CSI-RS and a DMRS for downlink signal transmission and / or downlink channel transmission are co-located.

2. The method according to claim 1, characterized in that: The association relationship is determined based on the co-site address information QCL-info of the unmeasured CSI-RS, and the QCL-info includes the identifier of the measured CSI-RS; and / or, The association relationship is determined based on the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS, and a distance between the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS is less than a preset distance threshold.

3. The method according to claim 1 or 2, characterized in that: The method further comprises: receiving an association indication message of the unmeasured CSI-RS sent by the network device, wherein the association indication message includes an identifier of the measured CSI-RS; The association relationship is determined based on the identifier of the measured CSI-RS.

4. The method according to claim 3, characterized in that The association indication message includes any of the following: TCI status message; Information elements; Configuration information.

5. The method according to claim 1 or 2, characterized in that: The indication message includes any of the following: A TCI status message including the first CSI-RS; A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS; Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

6. The method according to claim 1 or 2, characterized in that: The method further comprises: receiving a resource indication message sent by the network device, where the resource indication message is used to indicate a target resource used by the terminal to report a measurement result; Based on the target resource, reporting the measurement result to the network device; The resource indication message includes any of the following: activating a MAC-CE used by a secondary cell of the terminal; Radio Resource Control RRC message; The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

7. The method according to claim 6, characterized in that The MAC-CE includes at least one of the following: a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal; A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located; A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource; A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located; A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located; A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource; A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource; A frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

8. A method for determining a reference signal, characterized in that: Applied to a network device, the method comprises: Determine an association relationship between an unmeasured CSI-RS and a measured CSI-RS; Sending an indication message to a terminal, where the indication message is used to indicate a first channel state information reference signal CSI-RS; Among them, the association relationship is used to determine the target CSI-RS associated with the first CSI-RS, and the target CSI-RS has a co-site relationship with a demodulation reference signal for uplink signal transmission and / or uplink channel transmission, and / or has a co-site relationship with a DMRS for downlink signal transmission and / or downlink channel transmission.

9. The method according to claim 8, characterized in that The determining the association relationship between the unmeasured CSI-RS and the measured CSI-RS includes: determining whether the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS; and determining that the unmeasured CSI-RS has the association relationship with the measured CSI-RS when the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS; and / or, Determine that a distance between a time slot position where the unmeasured CSI-RS is located and a time slot position where the measured CSI-RS is located is less than a preset distance threshold; if the distance is less than the preset distance threshold, determine that the unmeasured CSI-RS and the measured CSI-RS have the association relationship.

10. The method according to claim 8 or 9, characterized in that: The method further comprises: An association indication message of the unmeasured CSI-RS is sent to the terminal, where the association indication message includes an identifier of the measured CSI-RS, and the association indication message is used to determine the association relationship.

11. The method according to claim 10, characterized in that The association indication message includes any of the following: TCI status message; Information elements; Configuration information.

12. The method according to claim 8 or 9, characterized in that: The indication message includes any of the following: A TCI status message including the first CSI-RS; A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS; Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

13. The method according to claim 8 or 9, characterized in that: The method further comprises: Sending a resource indication message to the terminal, where the resource indication message is used to indicate a target resource to be used by the terminal for reporting a measurement result; The resource indication message includes any of the following: activating a MAC-CE used by a secondary cell of the terminal; Radio Resource Control RRC message; The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

14. The method according to claim 13, characterized in that The MAC-CE includes at least one of the following: a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal; A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located; A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource; A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located; A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located; A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource; A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource; A frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

15. A terminal, characterized in that: Including memory, transceiver, processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: receiving an indication message sent by a network device, where the indication message is used to indicate a first channel state information reference signal CSI-RS; In a case where the first CSI-RS is an unmeasured reference signal, determining a target CSI-RS associated with the first CSI-RS from the measured CSI-RS based on an association relationship between the unmeasured CSI-RS and the measured CSI-RS; The target CSI-RS and a demodulation reference signal DMRS for uplink signal transmission and / or uplink channel transmission are co-located, and / or the target CSI-RS and a DMRS for downlink signal transmission and / or downlink channel transmission are co-located.

16. The terminal according to claim 15, characterized in that: The association relationship is determined based on the co-site address information QCL-info of the unmeasured CSI-RS, and the QCL-info includes the identifier of the measured CSI-RS; and / or, The association relationship is determined based on the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS, and a distance between the time slot position of the unmeasured CSI-RS and the time slot position of the measured CSI-RS is less than a preset distance threshold.

17. The terminal according to claim 15 or 16, characterized in that: The processor is further configured to perform the following operations: receiving an association indication message of the unmeasured CSI-RS sent by the network device, wherein the association indication message includes an identifier of the measured CSI-RS; The association relationship is determined based on the identifier of the measured CSI-RS.

18. The terminal according to claim 17, characterized in that: The association indication message includes any of the following: TCI status message; Information elements; Configuration information.

19. The terminal according to claim 15 or 16, characterized in that: The indication message includes any of the following: A TCI status message including the first CSI-RS; A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS; Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

20. The terminal according to claim 15 or 16, characterized in that: The processor is further configured to perform the following operations: receiving a resource indication message sent by the network device, where the resource indication message is used to indicate a target resource used by the terminal to report a measurement result; Based on the target resource, reporting the measurement result to the network device; The resource indication message includes any of the following: activating a MAC-CE used by a secondary cell of the terminal; Radio Resource Control RRC message; The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

21. The terminal according to claim 20, characterized in that: The MAC-CE includes at least one of the following: a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal; A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located; A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource; A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located; A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located; A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource; A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource; A frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

22. A network device, characterized in that: Including memory, transceiver, processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: Determine an association relationship between an unmeasured CSI-RS and a measured CSI-RS; Sending an indication message to a terminal, where the indication message is used to indicate a first channel state information reference signal CSI-RS; Among them, the association relationship is used to determine the target CSI-RS associated with the first CSI-RS, and the target CSI-RS has a co-site relationship with a demodulation reference signal for uplink signal transmission and / or uplink channel transmission, and / or has a co-site relationship with a DMRS for downlink signal transmission and / or downlink channel transmission.

23. The network device according to claim 22, characterized in that: The determining the association relationship between the unmeasured CSI-RS and the measured CSI-RS includes: determining whether the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS; and determining that the unmeasured CSI-RS has the association relationship with the measured CSI-RS when the co-site information QCL-info of the unmeasured CSI-RS includes the identifier of the measured CSI-RS; and / or, Determine that a distance between a time slot position where the unmeasured CSI-RS is located and a time slot position where the measured CSI-RS is located is less than a preset distance threshold; if the distance is less than the preset distance threshold, determine that the unmeasured CSI-RS and the measured CSI-RS have the association relationship.

24. The network device according to claim 22 or 23, characterized in that: The processor is further configured to perform the following operations: An association indication message of the unmeasured CSI-RS is sent to the terminal, where the association indication message includes an identifier of the measured CSI-RS, and the association indication message is used to determine the association relationship.

25. The network device according to claim 24, characterized in that: The association indication message includes any of the following: TCI status message; Information elements; Configuration information.

26. The network device according to claim 22 or 23, characterized in that: The indication message includes any of the following: A TCI status message including the first CSI-RS; A medium access control address control element MAC-CE, wherein the MAC-CE includes an identifier of the first CSI-RS; Downlink control information DCI, wherein the DCI includes an identifier of the first CSI-RS.

27. The network device according to claim 22 or 23, characterized in that: The processor is further configured to perform the following operations: Sending a resource indication message to the terminal, where the resource indication message is used to indicate a target resource to be used by the terminal for reporting a measurement result; The resource indication message includes any of the following: activating a MAC-CE used by a secondary cell of the terminal; Radio Resource Control RRC message; The high-layer configuration signaling includes a resource parameter, and the resource parameter is used to indicate that the target resource is a time slot in a time slot after the secondary cell of the terminal is activated.

28. The network device according to claim 27, characterized in that: The MAC-CE includes at least one of the following: a carrier indicator, where the carrier indicator is used to indicate a secondary cell of the terminal; A partial bandwidth BWP indicator, where the BWP indicator is used to indicate the BWP where the target resource is located; A channel state information parameter, wherein the channel state information parameter is used to indicate a channel state of the target resource; A time domain resource allocation parameter, wherein the time domain resource allocation parameter is used to indicate the time domain where the target resource is located; A frequency domain resource allocation parameter, wherein the frequency domain resource allocation parameter is used to indicate the frequency domain where the target resource is located; A modulation and coding strategy, where the modulation and coding strategy is used to indicate a modulation and coding strategy corresponding to the target resource; A transmission power control instruction, wherein the transmission power control instruction is used to indicate a closed-loop power control corresponding to the target resource; A frequency hopping flag is used to indicate whether the target resource uses frequency modulation.

29. A device for determining a reference signal, characterized in that: Applied to a terminal, the device comprises: A first receiving unit, configured to receive an indication message sent by a network device, where the indication message is used to indicate a first channel state information reference signal CSI-RS; A first processing unit, configured to determine, when the first CSI-RS is an unmeasured reference signal, based on an association relationship between the unmeasured CSI-RS and the measured CSI-RS, a target CSI-RS associated with the first CSI-RS from the measured CSI-RS; The target CSI-RS and a demodulation reference signal DMRS for uplink signal transmission and / or uplink channel transmission are co-located, and / or the target CSI-RS and a DMRS for downlink signal transmission and / or downlink channel transmission are co-located.

30. A device for determining a reference signal, characterized in that: Applied to network equipment, the device comprises: A processing unit, configured to determine an association relationship between an unmeasured CSI-RS and a measured CSI-RS; A first sending unit, configured to send an indication message to a terminal, where the indication message is used to indicate a first channel state information reference signal CSI-RS; Among them, the association relationship is used to determine the target CSI-RS associated with the first CSI-RS, and the target CSI-RS has a co-site relationship with a demodulation reference signal for uplink signal transmission and / or uplink channel transmission, and / or has a co-site relationship with a DMRS for downlink signal transmission and / or downlink channel transmission.

31. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the method for determining a reference signal according to any one of claims 1 to 7; or, to execute the method for determining a reference signal according to any one of claims 8 to 14.

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