Information transmission method, device, related equipment and storage device

Abstract

The present application discloses an information transmission method, device, network equipment, terminal and storage medium. The method includes: the network equipment sends first information to the terminal; the first information indicates a first reference signal used to determine at least one of the following parameters: average delay; delay spread.

Description

Technical Field

[0001] The present application relates to the field of wireless communications, and in particular to an information transmission method, apparatus, related equipment and storage medium. Background Art

[0002] With the development of communication technology, it is expected that high mobility of up to 500km / h can be achieved with acceptable quality of service (QoS) in communication systems, which is conceived especially for high-speed trains (HST). The HST scenario is also one of the important fifth-generation mobile communication technology (5G) new air interface (NR) deployment scenarios. The key features of the HST scenario are consistent passenger user experience with high mobility and critical train communication reliability.

[0003] The most important HST scenario is the single frequency network (SFN) deployment scenario, namely the HST-SFN deployment scenario. Figure 1 As shown in the figure, multiple remote radio heads (RRHs) are connected to a baseband unit (BBU) via optical fiber and share the same cell identity (ID) to reduce the number of handovers and maximize user experience. For each RRH, there are usually two multiple transmit and receive points (TRPs) in opposite directions along the track. At least in 5G commercial networks, HST-SFN deployment is still the most important solution for NR high-speed trains.

[0004] In the HST-SFN deployment scenario, how to accurately perform channel estimation when a terminal receives signals sent by multiple TRPs is a problem that needs to be solved urgently. Summary of the invention

[0005] To solve related technical problems, the embodiments of the present application provide an information transmission method, apparatus, related equipment and storage medium.

[0006] The technical solution of the embodiment of the present application is implemented as follows:

[0007] At least one embodiment of the present application provides an information transmission method, which is applied to a network device, including:

[0008] Sending first information to a terminal; the first information indicates a first reference signal used to determine at least one of the following parameters:

[0009] Average delay;

[0010] Delay spread.

[0011] In addition, according to at least one embodiment of the present application, the sending the first information to the terminal includes:

[0012] A first quasi co-location (QCL) type is sent to the terminal; the first QCL type corresponds to a first reference signal.

[0013] In addition, according to at least one embodiment of the present application, the sending the first QCL type to the terminal includes:

[0014] A transmission configuration indication state (TCI-State) is configured to the terminal; the configuration parameters of the TCI-State include the first QCL type.

[0015] In addition, according to at least one embodiment of the present application, the first information indicates that the reference signal corresponding to the quasi co-location type QCL-TypeA is only used to determine at least one of the following parameters:

[0016] Average delay;

[0017] Delay spread.

[0018] In addition, according to at least one embodiment of the present application, the first information is sent to the terminal in one of the following ways:

[0019] Radio Resource Control (RRC) signaling;

[0020] Media Access Control Controller (MAC CE);

[0021] Downlink Control Information (DCI).

[0022] In addition, according to at least one embodiment of the present application, the method further includes:

[0023] An uplink signal sent by the terminal is received; the modulation carrier frequency of the uplink signal is determined by using a second reference signal.

[0024] At least one embodiment of the present application further provides an information transmission method, applied to a terminal, comprising:

[0025] Receive first information sent by a network side; the first information indicates a first reference signal used to determine at least one of the following parameters:

[0026] Average delay;

[0027] Delay spread.

[0028] In addition, according to at least one embodiment of the present application, the receiving the first information sent by the network side includes:

[0029] A first QCL type sent by the network side is received; the first QCL type corresponds to a first reference signal.

[0030] In addition, according to at least one embodiment of the present application, the receiving the first QCL type sent by the network side includes:

[0031] Receive TCI-State configuration parameters sent by the network side; the TCI-State configuration parameters include the first QCL type.

[0032] In addition, according to at least one embodiment of the present application, the first information indicates that the reference signal corresponding to QCL-TypeA is only used to determine at least one of the following parameters:

[0033] Average delay;

[0034] Delay spread.

[0035] In addition, according to at least one embodiment of the present application, the first information sent by the network side is received in one of the following ways:

[0036] RRC signaling;

[0037] MAC CE;

[0038] DCI.

[0039] In addition, according to at least one embodiment of the present application, the method further includes:

[0040] Determining a modulation carrier frequency of an uplink signal using a second reference signal;

[0041] The uplink signal is sent on a determined modulated carrier frequency.

[0042] At least one embodiment of the present application further provides an information transmission method, which is applied to a network device, comprising:

[0043] Sending second information to the terminal; the second information indicates at least one of the following:

[0044] The uplink modulation carrier frequency of the terminal is associated with the carrier frequency of receiving the third reference signal;

[0045] The uplink modulation carrier frequency of the terminal is unrelated to the carrier frequency of receiving the fourth reference signal.

[0046] In addition, according to at least one embodiment of the present application, the second information is sent to the terminal in one of the following ways:

[0047] RRC signaling;

[0048] MAC CE;

[0049] DCI.

[0050] In addition, according to at least one embodiment of the present application, the method further includes:

[0051] An uplink signal sent by the terminal is received; the modulated carrier frequency of the uplink signal is determined using the third reference signal.

[0052] At least one embodiment of the present application further provides an information transmission method, applied to a terminal, comprising:

[0053] Receive second information sent by the network side; the second information indicates at least one of the following:

[0054] The uplink modulation carrier frequency of the terminal is associated with the carrier frequency of receiving the third reference signal;

[0055] The uplink modulation carrier frequency of the terminal is unrelated to the carrier frequency of receiving the fourth reference signal.

[0056] In addition, according to at least one embodiment of the present application, the second information sent by the network side is received in one of the following ways:

[0057] RRC signaling;

[0058] MAC CE;

[0059] DCI.

[0060] In addition, according to at least one embodiment of the present application, the method further includes:

[0061] Determine a modulation carrier frequency of an uplink signal according to the third reference signal;

[0062] The uplink signal is sent on a determined modulated carrier frequency.

[0063] At least one embodiment of the present application further provides an information transmission device, including:

[0064] A first sending unit is configured to send first information to a terminal; the first information indicates a first reference signal used to determine at least one of the following parameters:

[0065] Average delay;

[0066] Delay spread.

[0067] At least one embodiment of the present application further provides an information transmission device, including:

[0068] A first receiving unit is configured to receive first information sent by a network side; the first information indicates a first reference signal used to determine at least one of the following parameters:

[0069] Average delay;

[0070] Delay spread.

[0071] At least one embodiment of the present application further provides an information transmission device, including:

[0072] The second sending unit is configured to send second information to the terminal; the second information indicates at least one of the following:

[0073] The uplink modulation carrier frequency of the terminal is associated with the carrier frequency of receiving the third reference signal;

[0074] The uplink modulation carrier frequency of the terminal is unrelated to the carrier frequency of receiving the fourth reference signal.

[0075] At least one embodiment of the present application further provides an information transmission device, including:

[0076] The second receiving unit is configured to receive second information sent by the network side; the second information indicates at least one of the following:

[0077] The uplink modulation carrier frequency of the terminal is associated with the carrier frequency of receiving the third reference signal;

[0078] The uplink modulation carrier frequency of the terminal is not associated with the carrier frequency of receiving the fourth reference signal; wherein,

[0079] A first reference signal and a second reference signal are configured for the terminal.

[0080] At least one embodiment of the present application further provides a network device, comprising: a first communication interface and a first processor; wherein,

[0081] The first communication interface is used to send first information to the terminal; the first information indicates a first reference signal used to determine at least one of the following parameters:

[0082] Average delay;

[0083] Delay spread;

[0084] or,

[0085] The first communication interface is used to send second information to the terminal; the second information indicates at least one of the following:

[0086] The uplink modulation carrier frequency of the terminal is associated with the carrier frequency of receiving the third reference signal;

[0087] The uplink modulation carrier frequency of the terminal is unrelated to the carrier frequency of receiving the fourth reference signal.

[0088] At least one embodiment of the present application further provides a terminal, comprising: a second communication interface and a second processor; wherein,

[0089] The second communication interface is used to receive first information sent by the network side; the first information indicates a first reference signal used to determine at least one of the following parameters:

[0090] Average delay;

[0091] Delay spread;

[0092] or,

[0093] The second communication interface is used to send second information to the terminal; the second information indicates at least one of the following:

[0094] The uplink modulation carrier frequency of the terminal is associated with the carrier frequency of receiving the third reference signal;

[0095] The uplink modulation carrier frequency of the terminal is unrelated to the carrier frequency of receiving the fourth reference signal.

[0096] At least one embodiment of the present application further provides a network device, comprising: a first processor and a first memory for storing a computer program that can be run on the processor,

[0097] Wherein, the first processor is used to execute the steps of any one of the above-mentioned methods on the network device side when running the computer program.

[0098] At least one embodiment of the present application further provides a terminal, comprising: a second processor and a second memory for storing a computer program that can be run on the processor,

[0099] Wherein, the second processor is used to execute the steps of any one of the above-mentioned methods on the network device side when running the computer program.

[0100] At least one embodiment of the present application further provides a storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the computer program implements the steps of any of the above-mentioned methods on the network device side, or implements the steps of any of the above-mentioned methods on the terminal side.

[0101] The information transmission method, apparatus, related equipment and storage medium provided in the embodiments of the present application, the network device sends first information to the terminal; the first information indicates a first reference signal used to determine at least one of the following parameters: average delay; delay spread; since the reference signal for delay estimation is indicated to the terminal, in the HST-SFN scenario, when the terminal receives multiple downlink signals, it can accurately estimate delay-related parameters, thereby improving user experience; the network device sends second information to the terminal; the second information indicates at least one of the following: the uplink modulation carrier frequency of the terminal is associated with the carrier frequency for receiving the third reference signal; the uplink modulation carrier frequency of the terminal is not associated with the carrier frequency for receiving the fourth reference signal; since the reference signal for Doppler estimation is indicated to the terminal, when the terminal receives multiple downlink signals, it can accurately estimate Doppler-related parameters, thereby realizing downlink Doppler pre-compensation in the HST-SFN scenario, thereby improving user experience when receiving multiple downlink signals with large Doppler frequency deviation differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0102] Figure 1 A schematic diagram of a HST-SFN deployment scenario in related technologies;

[0103] Figure 2 This is a schematic diagram of a method flow for information transmission according to an embodiment of the present application;

[0104] Figure 3 This is a schematic diagram of a method flow for information transmission according to an embodiment of the present application;

[0105] Figure 4 This is a schematic diagram of a high-speed rail scenario in an application example of the present application;

[0106] Figure 5 A schematic diagram of a process for performing Doppler frequency offset pre-compensation in an application embodiment of the present application;

[0107] Figure 6 This is a schematic diagram of a high-speed rail scenario in an application example of the present application;

[0108] Figure 7 This is another schematic diagram of a process for performing Doppler frequency offset pre-compensation in an application embodiment of the present application;

[0109] Figure 8 This is a schematic diagram of the structure of an information transmission device provided on a network device according to an embodiment of the present application;

[0110] Fig. 9 A schematic diagram of the structure of an information transmission device provided on a terminal according to an embodiment of the present application;

[0111] Fig.10 This is a schematic diagram of the structure of another information transmission device provided on a network device according to an embodiment of the present application;

[0112] Fig.11 This is a schematic diagram of the structure of another information transmission device provided on a terminal according to an embodiment of the present application;

[0113] Fig.12 This is a schematic diagram of the network device structure of an embodiment of the present application;

[0114] Fig.13 This is a schematic diagram of the terminal structure of an embodiment of the present application;

[0115] Fig.14 This is a schematic diagram of the information transmission system structure of an embodiment of the present application. DETAILED DESCRIPTION

[0116] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0117] In the HST-SFN deployment scenario, there are some important parameters to consider during deployment, as shown in Table 1.

[0118]

[0119] Table 1

[0120] The values ​​corresponding to the parameters are typical values ​​used in commercial network deployments.

[0121] In the HST-SFN deployment scenario, the biggest challenge comes from the high Doppler shift caused by high speed (e.g. 500km / h), higher frequency (e.g. 2.6GHz, 3.5GHz) and SFN deployment characteristics. For example, the Doppler shift can reach 1.2KHz at 2.6GHz and 1.6Hz at 3.5GHz. In addition, when the train is located between two RRHs, if the frequency is 3.5GHz, the users in the train will experience 1.6kHz and -1.6kHz Doppler shifts at the same time. The significant difference between the two Doppler shifts experienced by the user equipment (UE) at the same time will cause huge performance degradation. Similarly, the significant difference between the two delays experienced by the UE at the same time will also cause huge performance degradation.

[0122] Based on this, in various embodiments of the present application, in the HST-SFN deployment scenario, a reference signal for delay estimation of the terminal is indicated, and / or the carrier frequency of the terminal is indicated, which downlink reference signal is associated with the carrier frequency and / or which downlink reference signal is not associated with the carrier frequency.

[0123] The two solutions are described in detail below.

[0124] First, the processing flow of indicating a reference signal used by a terminal for delay estimation is described.

[0125] The present application provides an information transmission method, which is applied to a network device. The method includes:

[0126] Sending first information to a terminal; the first information indicates a first reference signal used to determine at least one of the following parameters:

[0127] Average delay (which can be expressed as average delay in English);

[0128] Delay spread (which can be expressed as delay spread in English).

[0129] In actual application, the network device may specifically be a base station.

[0130] It should be noted that the solution of the embodiment of the present application is applied to the HST-SFN deployment scenario, that is, multiple TRPs all send downlink signals (including the first reference signal). At this time, the terminal can receive multiple downlink signals. When multiple TRPs send reference signals, the terminal can receive multiple downlink reference signals.

[0131] In the embodiment of the present application, the network device itself can determine which reference signal is applicable to the terminal, that is, the network device determines the first reference signal as needed, which is not limited in the embodiment of the present application.

[0132] In actual application, the first information may be sent to the terminal in one of the following ways:

[0133] RRC signaling;

[0134] MAC CE;

[0135] DCI.

[0136] Among them, RRC signaling and MAC CE can be called high-layer signaling; DCI is physical layer signaling.

[0137] In actual application, the RRC signaling may be RRC reconfiguration signaling.

[0138] In the related art, several QCL types have been defined, and the role of the reference signal corresponding to each QCL type has also been defined; specifically,

[0139] QCL-TypeA: {Doppler shift, Doppler spread, average delay, delay spread}, i.e., the reference signal corresponding to QCL-TypeA can be used to estimate Doppler frequency shift (which can be expressed as Doppler shift in English), Doppler spread (which can be expressed as Doppler spread in English), average delay, and average spread;

[0140] QCL-TypeB:{Doppler shift, Doppler spread}, i.e., the reference signal corresponding to QCL-TypeB can be used to estimate the Doppler frequency shift and Doppler spread;

[0141] QCL-TypeC:{Doppler shift, average delay}, that is, the reference signal corresponding to QCL-TypeC can be used to estimate the Doppler frequency shift and average delay;

[0142] QCL-TypeD:{Spatial Rx parameter}, that is, the reference signal corresponding to QCL-TypeD can be used to estimate the spatial reception parameters.

[0143] In general scenarios, channel estimation can be performed using the above reference signals. However, in HST-SFN deployment scenarios, the above parameters cannot accurately estimate the channel. Therefore, a QCL type can be defined, and the newly defined QCL type corresponds to a downlink reference signal (DL RS) for delay-related estimation.

[0144] Based on this, in one embodiment, sending the first information to the terminal includes:

[0145] A first QCL type is sent to the terminal; the first QCL type corresponds to a first reference signal.

[0146] Exemplarily, 'QCL-TypeE':{average delay,delay spread}, or 'QCL-TypeE':{average delay}, or 'QCL-TypeE':{delay spread} may be defined.

[0147] Among them, 'QCL-TypeE':{average delay,delay spread} indicates that the corresponding reference signal can be used to estimate the average delay and delay spread; 'QCL-TypeE':{average delay} indicates that the corresponding reference signal can be used to estimate the average delay; 'QCL-TypeE':{delay spread} indicates that the corresponding reference signal can be used to estimate the delay spread.

[0148] In actual application, TCI-State is used to indicate a reference signal corresponding to at least one QCL type configured by the terminal. Therefore, the first QCL type can be indicated by TCI-State.

[0149] Based on this, in one embodiment, sending the first QCL type to the terminal includes:

[0150] Configure TCI-State for the terminal; the configuration parameters of TCI-State include the first QCL type.

[0151] Exemplarily, the first QCL type may be indicated to the terminal by the network device as qcl-Type3 in TCI-State, and the content of TCI-State is as follows:

[0152]

[0153] Among them, the QCL type corresponding to qcl-Type1 and qcl-Type2 can be understood according to relevant technologies and will not be repeated here.

[0154] In actual application, based on the existing QCL-TypeA and in combination with pre-defined or signaling instructions, the reference signal corresponding to the terminal QCL-TypeA is indicated to be used only for estimating at least one of the following parameters:

[0155] Average delay;

[0156] Delay spread.

[0157] Based on this, in one embodiment, the first information indicates that the reference signal corresponding to QCL-TypeA is only used to determine at least one of the following parameters:

[0158] Average delay;

[0159] Delay spread.

[0160] In actual application, there may be at least one reference signal corresponding to QCL-TypeA configured on the network side; at this time, the first information may indicate that at least one of the at least one reference signal corresponding to QCL-TypeA configured on the network side is only used to determine the average delay and / or delay spread.

[0161] In actual application, the network device needs to configure at least one reference signal to the terminal for channel estimation, which is sent by multiple TRPs.

[0162] In the embodiment of the present application, the above-mentioned reference signal may include a tracking reference signal (TRS).

[0163] The first reference signal may include one or more reference signals.

[0164] In actual application, the terminal sends an uplink signal (such as a reference signal) based on the instruction of the network device, so that the network device can perform Doppler frequency offset estimation.

[0165] Based on this, in one embodiment, the method may further include:

[0166] An uplink signal sent by the terminal is received; the modulation carrier frequency of the uplink signal (which can also be understood as the carrier frequency of the uplink signal) is determined using the second reference signal.

[0167] Here, the network device can use the received uplink signal to estimate the frequency offset and determine the Doppler frequency offset compensation value of at least one TRP.

[0168] Specifically, the network device estimates frequency offsets of the multiple TRPs to obtain frequency offsets of the multiple TRPs relative to the carrier frequency of the second reference signal;

[0169] The Doppler frequency offset compensation value of at least one TRP is determined by using the obtained frequency offsets of the multiple TRPs relative to the carrier frequency of the second reference signal; the at least one TRP does not include the TRP that sends the second reference signal.

[0170] Among them, since the first reference signal is only used to determine the average delay and / or delay spread and cannot be used for Doppler frequency correlation estimation, the terminal uses the second reference signal that can be used to estimate Doppler frequency correlation estimation to determine the carrier frequency of the uplink signal.

[0171] In the embodiment of the present application, the specific processing procedure for estimating the frequency offset of multiple TRPs using the received uplink signal is not limited; at the same time, the specific processing procedure for determining the Doppler frequency offset compensation value of at least one TRP using the obtained frequency offset of the multiple TRPs relative to the carrier frequency of the second reference signal is also not limited.

[0172] Correspondingly, an embodiment of the present application further provides an information transmission method, which is applied to a terminal, comprising:

[0173] Receive first information sent by a network side; the first information indicates a first reference signal used to determine at least one of the following parameters:

[0174] Average delay;

[0175] Delay spread.

[0176] In one embodiment, the receiving the first information sent by the network side includes:

[0177] A first QCL type sent by the network side is received; the first QCL type corresponds to a first reference signal.

[0178] In one embodiment, the receiving the first QCL type sent by the network side includes:

[0179] Receive TCI-State configuration parameters sent by the network side; the TCI-State configuration parameters include the first QCL type.

[0180] In one embodiment, the first information sent by the network side is received in one of the following ways:

[0181] RRC signaling;

[0182] MAC CE;

[0183] DCI.

[0184] Specifically, when the network side sends the first information through RRC signaling, the terminal receives the first information through RRC signaling; when the network side sends the first information through MAC CE, the terminal receives the first information through MAC CE; when the network side sends the first information through DCI, the terminal receives the first information through DCI.

[0185] In one embodiment, the method may further include:

[0186] Determining a modulation carrier frequency of an uplink signal using a second reference signal;

[0187] An uplink signal is sent on a determined modulated carrier frequency; the sent uplink signal can be used for the network side to determine a Doppler frequency offset compensation value of at least one TRP; the at least one TRP does not include a TRP that sends a second reference signal.

[0188] Among them, in the embodiment of the present application, the specific processing process of determining the modulation carrier frequency of the uplink reference signal by using the second reference signal is not limited.

[0189] The present application also provides an information transmission method, such as Figure 2 As shown, the method includes:

[0190] Step 201: A network device sends first information to a terminal; the first information indicates a first reference signal used to determine at least one of the following parameters:

[0191] Average delay;

[0192] Delay spread;

[0193] Step 202: The terminal receives the first information.

[0194] It should be noted that the specific processing process of the network device and the terminal has been described in detail above and will not be repeated here.

[0195] In the information transmission method provided in the embodiment of the present application, a network device sends first information to a terminal; the first information indicates a first reference signal used to determine at least one of the following parameters: average delay; delay spread. Since the reference signal for delay estimation is indicated to the terminal, in the HST-SFN scenario, when the terminal receives multiple downlink signals, it is possible to accurately estimate delay-related parameters; in this way, accurate estimation of the downlink delay in the HST-SFN scenario can be achieved, thereby improving the user experience when receiving multiple downlink signals with large delay differences.

[0196] Next, a process flow of indicating which downlink reference signal's carrier frequency the terminal carrier frequency is associated with and / or which downlink reference signal's carrier frequency the terminal carrier frequency is not associated with is described.

[0197] The present application provides an information transmission method, which is applied to a network device, specifically a base station, and includes:

[0198] Sending second information to the terminal; the second information indicates at least one of the following:

[0199] An uplink modulated carrier frequency (which can be expressed as a modulated carrier frequency in English) of the terminal is associated with a carrier frequency (which can be expressed as a carrier frequency in English) for receiving a third reference signal;

[0200] The uplink modulation carrier frequency of the terminal is unrelated to the carrier frequency of receiving the fourth reference signal.

[0201] Wherein, in actual application, the network device configures a third reference signal and / or a fourth reference signal for the terminal.

[0202] In the embodiment of the present application, the network device itself can determine which reference signal is applicable to the terminal, that is, the network device determines the third reference signal and the fourth reference signal as needed, which is not limited in the embodiment of the present application.

[0203] In actual application, the reference signal associated with the uplink modulation carrier frequency of the terminal may be one or more, that is, the third reference signal may include at least one reference signal; correspondingly, the reference signal not associated with the uplink modulation carrier frequency of the terminal may be one or more, that is, the fourth reference signal may include at least one reference signal.

[0204] In actual application, the second information may be sent to the terminal in one of the following ways, including:

[0205] RRC signaling;

[0206] MAC CE;

[0207] DCI.

[0208] Here, RRC signaling and MAC CE can be called high-layer signaling; DCI is physical layer signaling.

[0209] In actual application, the RRC signaling may be RRC reconfiguration signaling.

[0210] In the case where the second information indicates that the uplink modulation carrier frequency of the terminal is associated with the carrier frequency of receiving the third reference signal, the second information is associated with the third reference signal; the second information indicates that the uplink modulation carrier frequency of the terminal is associated with the carrier frequency of receiving the third reference signal, which can also be understood as: the second information indicates that the terminal determines the carrier frequency of the uplink signal according to the carrier frequency of receiving the third reference signal, that is, the second information indicates that the terminal determines the carrier frequency of the uplink signal according to the reception of the first reference signal.

[0211] When the second information indicates that the uplink modulation carrier frequency of the terminal is not associated with the carrier frequency of receiving the fourth reference signal, the second information is associated with the fourth reference signal; the second information indicates that the uplink modulation carrier frequency of the terminal is not associated with the carrier frequency of receiving the fourth reference signal, which can also be understood as: the second information indicates that the terminal does not determine the carrier frequency of the uplink signal based on the carrier frequency of receiving the fourth reference signal, that is, the second information indicates that the terminal does not determine the carrier frequency of the uplink signal based on the reception of the fourth reference signal.

[0212] The terminal sends an uplink signal (such as a reference signal) based on an instruction from the network device, so that the network device can estimate the Doppler frequency offset.

[0213] Based on this, in one embodiment, the method may further include:

[0214] An uplink signal sent by the terminal is received; the modulation carrier frequency of the uplink signal (which can also be understood as the carrier frequency of the uplink signal) is determined using the third reference signal.

[0215] Here, the network device can use the received uplink signal to estimate the frequency offset and determine the Doppler frequency offset compensation value of at least one TRP.

[0216] Specifically, the network device estimates frequency offsets of the multiple TRPs to obtain frequency offsets of the multiple TRPs relative to the carrier frequency of the third reference signal;

[0217] The Doppler frequency offset compensation value of at least one TRP is determined by utilizing the obtained frequency offsets of the multiple TRPs relative to the carrier frequency of the third reference signal; the at least one TRP sends the fourth reference signal and does not send the third reference signal.

[0218] Among them, in the embodiment of the present application, the specific processing process of estimating the frequency offset of multiple TRPs using the received uplink reference signal is not limited; at the same time, the specific processing process of determining the Doppler frequency offset compensation value of at least one TRP using the obtained frequency offset of the multiple TRPs relative to the carrier frequency of the third reference signal is also not limited.

[0219] In actual application, the network device needs to configure at least one reference signal for the terminal for channel estimation.

[0220] In the embodiment of the present application, the above-mentioned reference signal may include TRS.

[0221] Correspondingly, an embodiment of the present application further provides an information transmission method, which is applied to a terminal, and the method includes:

[0222] Receive second information sent by the network side; the second information indicates at least one of the following:

[0223] The uplink modulation carrier frequency of the terminal is associated with the carrier frequency of receiving the third reference signal;

[0224] The uplink modulation carrier frequency of the terminal is unrelated to the carrier frequency of receiving the fourth reference signal.

[0225] In one embodiment, the second information sent by the network side is received in one of the following ways:

[0226] RRC signaling;

[0227] MAC CE;

[0228] DCI.

[0229] Specifically, when the network side sends the second information through RRC signaling, the terminal receives the second information through RRC signaling; when the network side sends the second information through MAC CE, the terminal receives the second information through MAC CE; when the network side sends the first information through DCI, the terminal receives the second information through DCI.

[0230] In one embodiment, the method further comprises:

[0231] determining a modulation carrier frequency of an uplink signal according to the third reference signal (i.e. determining a modulation carrier frequency of an uplink signal based on reception of the third reference signal);

[0232] An uplink signal is sent on a determined modulated carrier frequency; the sent uplink signal can be used for the network side to determine a Doppler frequency offset compensation value of at least one TRP; the at least one TRP sends the fourth reference signal and does not send the third reference signal.

[0233] Here, in the embodiment of the present application, the specific processing procedure for determining the modulation carrier frequency of the uplink reference signal according to the third reference signal is not limited.

[0234] The present application also provides an information transmission method. Figure 3 As shown, the method includes:

[0235] Step 301: The network device sends second information to the terminal; the second information indicates at least one of the following:

[0236] The uplink modulation carrier frequency of the terminal is associated with the carrier frequency of receiving the third reference signal;

[0237] The uplink modulation carrier frequency of the terminal is not associated with the carrier frequency of receiving the fourth reference signal; wherein,

[0238] configuring a third reference signal and a fourth reference signal for the terminal;

[0239] Step 302: The terminal receives the second information.

[0240] It should be noted that the specific processing process of the network device and the terminal has been described in detail above and will not be repeated here.

[0241] In the information transmission method provided in the embodiment of the present application, a network device sends second information to a terminal; the second information indicates at least one of the following: an uplink modulation carrier frequency of the terminal is associated with a carrier frequency for receiving a third reference signal; an uplink modulation carrier frequency of the terminal is not associated with a carrier frequency for receiving a fourth reference signal. Since the reference signal for Doppler estimation is indicated to the terminal, the terminal can accurately estimate Doppler-related parameters when receiving multiple downlink signals, thereby realizing downlink Doppler pre-compensation in an HST-SFN scenario, thereby improving the user experience when receiving multiple downlink signals with large Doppler frequency deviation differences.

[0242] The present application is further described in detail below in conjunction with application examples.

[0243] Application Example 1

[0244] In this application example, Figure 4As shown, assuming that in the high-speed rail scenario, that is, in the HST-SFN scenario, TRP0, TRP1, TRP2, and TRP3 are four TRPs connected to the same cell, assuming that the high-speed rail user is located at Figure 4 At the position shown, at this time, due to the antenna orientation of TRP0 and TRP3, the signals sent by TRP0 and TRP3 received by the UE are weak, so the influence of the signals sent by TRP0 and TRP3 can be ignored.

[0245] At the same time, the base station sends high-level signaling (such as RRC configuration signaling or MACCE) or physical layer signaling (such as DCI) to the UE; the signaling is associated with TRS0 (i.e., the third reference signal), and the signaling indicates that the modulated carrier frequency of the UE is associated with the carrier frequency of receiving TRS0, or the signaling indicates that the UE determines the carrier frequency of the uplink signal according to the carrier frequency of receiving TRS0. Or the signaling is associated with TRS SFN,i (ie, the fourth reference signal, a TRS that can be sent by all TRPs connected to the same cell), the signaling indicates the modulation carrier frequency of the UE and the frequency at which the UE receives the TRS SFN,i The carrier frequency is irrelevant, or the signaling indicates that the UE does not receive the TRS SFN,i The carrier frequency of the uplink signal is determined by the carrier frequency.

[0246] In this application embodiment, the base station configures periodic TRS0 and TRS1 for the UE. SFN,i, , multiple TRPs (such as TRP1 and TRP2) connected to the same cell, where TRS0 is sent only by some TRPs (assuming that TRS0 is sent by TRP1 and TRP2 does not send TRS0), TRS SFN,i The same TRP as the multiple TRPs for sending the physical downlink shared channel (PDSCH) and demodulation reference signal (DMRS) (assuming that the TRS SFN,i , PDSCH and DMRS are sent jointly by TRP1 and TRP2).

[0247] Combine the following Figure 5 The following describes the process of performing Doppler frequency offset precompensation in a base station. The process includes:

[0248] Step 1: TRP1 at carrier frequency f C Send TRS0;

[0249] Step 2: The UE receives TRS0 and determines the uplink modulation carrier frequency based on TRS0;

[0250] Here, assuming that the Doppler frequency shift is △f1, the uplink modulation carrier frequency determined based on TRS0 reception is f UE =f C +△f1;

[0251] Step 3: UE at carrier frequency f UE Sending uplink reference signals, such as channel sounding reference signals (SRS);

[0252] Step 4: performing frequency offset (i.e., frequency shift) estimation based on the uplink reference signal;

[0253] Here, it is assumed that TRP1 estimates the relative f C The frequency deviation is 2△f1 (the carrier frequency corresponding to TRP1 is f TRP1 =f UE +△f1=f C +△f1+△f1=f C +2△f1), TRP2 estimates relative to f C The frequency offset is △f1+△f2 (the carrier frequency corresponding to TRP2 is f TRP2 =f UE +△f2=f C +△f1+△f2); △f2 is the Doppler frequency offset corresponding to TRP2;

[0254] Step 5: The base station calculates the Doppler frequency offset pre-compensation value used by the user for TRP2;

[0255] Specifically, △f pre2 =△f1-△f2;

[0256] Step 6: TRP1 at carrier frequency f C Send TRS SFN,i , DMRS, PDSCH; TRP2 at carrier frequency f C +△f pre2 =f C +△f1-△f2 sends TRS SFN,i , DMRS, PDSCH; and TRP1 at carrier frequency f C Send TRS0;

[0257] Step 7: UE at carrier frequency f C +△f1 receives TRS0, TRS SFN,i , DMRS, PDSCH, based on the reception of TRS0, the uplink carrier frequency is determined to be f UE =f C +△f1;

[0258] Here, the UE uses the carrier frequency f CDetermine the uplink modulation carrier frequency, that is, the uplink modulation carrier frequency is f UE =f C +△f1;

[0259] Step 8: UE at carrier frequency f UE Send uplink reference signals, such as SRS;

[0260] Step 9: Estimating the frequency offset based on the uplink reference signal; assuming that TRP1 estimates the relative frequency offset of f C The frequency offset is 2△f1, and TRP2 estimates the frequency offset relative to f C The frequency shift is △f1+△f2;

[0261] Step 10: The base station calculates the Doppler frequency offset pre-compensation value used by the user for TRP2; specifically, △f pre2 =△f1-△f2, continue to execute subsequent steps.

[0262] It should be noted that: since the periodic TRS is sent periodically, the above process is executed periodically, and the sequence of some of the above steps is only an example, not a strict sequence.

[0263] Application Example 2

[0264] In this application embodiment, a new QCL type is defined, corresponding to a downlink reference signal, such as 'QCL-TypeE':{average delay,delay spread}, or 'QCL-TypeE':{average delay}, or 'QCL-TypeE':{delay spread}. The new QCL type can be indicated to the UE by the network side as qcl-Type3 in TCI-State.

[0265] The base station sends an indication signaling to the UE through high-layer signaling (such as RRC configuration or MAC CE) or physical layer signaling (such as DCI), and the indication signaling is associated with the first TCI-State, and the first TCI-State indicates the reference signal corresponding to 'QCL-TypeA' and the reference signal corresponding to 'QCL-TypeE' of the UE; it is assumed that the reference signal corresponding to 'QCL-TypeA' is the first TRS, and it is assumed that the reference signal corresponding to 'QCL-TypeE' is the second TRS (that is, the first reference signal).

[0266] For the DMRS of PDSCH, the UE shall expect the TCI-State to indicate one of the following QCL types:

[0267] 'QCL-TypeA' corresponds to a channel state information (CSI-RS) resource in a NZP-CSI-RS-ResourceSet configured with higher layer parameter trs-Info and, when applicable, 'QCL-TypeD' with the same CSI-RS resource;

[0268] 'QCL-TypeA' corresponds to a CSI-RS resource in a NZP-CSI-RS-ResourceSet configured with higher layer parameter trs-Info and, when applicable, 'QCL-TypeD' with a CSI-RS resource in an NZP-CSI-RS-ResourceSet configured with higher layer parameter repetition;

[0269] 'QCL-TypeA' corresponds to a CSI-RS resource in a NZP-CSI-RS-ResourceSet configured without higher layer parameter trs-Info and withouthigher layer parameter repetition and, when applicable,'QCL-TypeD'with thesame CSI-RS resource;

[0270] 'QCL-TypeA' corresponds to a CSI-RS resource in a NZP-CSI-RS-ResourceSet configured with higher layer parameter trs-Info, and 'QCL-TypeD' (if applicable) corresponds to another CSI-RS resource in a NZP-CSI-RS-ResourceSet configured with higher layer parameter trs-Info ('QCL-TypeA'with a CSI-RS resourcein a NZP-CSI-RS-ResourceSet configured with higher layer parameter trs-Infoand, when applicable, 'QCL-TypeE'with another CSI-RS resource in a NZP-CSI-RS-ResourceSet configured with higher layer parameter trs-Info).

[0271] Specifically, in this application embodiment, if Figure 6 As shown, assuming that in the high-speed rail scenario, that is, in the HST-SFN scenario, TRP0, TRP1, TRP2, and TRP3 are four TRPs connected to the same cell, assuming that the high-speed rail user is located at Figure 6 At the position shown, at this time, due to the antenna orientation of TRP0 and TRP3, the signals sent by TRP0 and TRP3 received by the UE are weak, so the influence of the signals sent by TRP0 and TRP3 can be ignored.

[0272] Assuming that the first TRS is TRS0 and the second TRS is TRS1, the base station sends a first indication signaling (i.e., the first information) to the UE through high-level signaling or physical layer signaling, and the first indication signaling indicates a TCI-State for the UE, and the TCI-State indicates the reference signal TRS0 corresponding to 'QCL-TypeA' and the reference signal TRS1 corresponding to 'QCL-TypeE' for the UE; according to the indication, the UE uses TRS0 to estimate Doppler frequency offset, Doppler spread, average delay, and average spread, and the UE only uses TRS1 to estimate the average delay and / or delay spread, that is, the UE uses TRS0 to estimate the Doppler frequency offset and Doppler spread, and the UE uses TRS0 and TRS1 together to estimate the average delay and / or delay spread.

[0273] In this application embodiment, a processing flow can also be adopted to indicate which downlink reference signal's carrier frequency the terminal carrier frequency is associated with and / or which downlink reference signal's carrier frequency is unrelated to. In this case, the base station can also send a second indication signaling (i.e., second information) to the UE through high-level signaling (such as RRC configuration or MAC CE) or physical layer signaling (such as DCI). The second indication indicates that the modulated carrier frequency of the UE is associated with the carrier frequency of receiving TRS0, or it can be an indication that the second signaling instructs the UE to determine the carrier frequency of the uplink signal based on the carrier frequency of receiving TRS0.

[0274] In this application embodiment, the base station configures periodic TRS0 and TRS1 for the UE, which is connected to multiple TRPs (such as TRP1 and TRP2) in the same cell, wherein TRS0 and TRS1 are respectively sent only by some TRPs (such as: TRS0 is sent by TRP1, TRP2 does not send TRS0; TRS1 is sent by TRP2, TRP1 does not send TRS1), and PDSCH and DMRS are jointly sent by multiple TRPs of TRS1 and TRS2 (such as: PDSCH and DMRS are both sent by TRP1 and TRP2).

[0275] Combine the following Figure 7 The following describes the process of performing Doppler frequency offset precompensation in a base station. The process includes:

[0276] Step 1: TRP1 at carrier frequency f C Send TRS0, TRP2 at carrier frequency f C Sending TRS1, the base station sends a second indication signaling to the UE through high-layer signaling or physical layer signaling, where the second indication signaling instructs the UE to determine the carrier frequency of the uplink signal based on the carrier frequency of the TRS0;

[0277] Step 2: The UE receives TRS0 and determines the uplink modulation carrier frequency based on TRS0;

[0278] Here, it is assumed that the Doppler frequency offset corresponding to TRP1 is △f1, and the uplink modulation carrier frequency determined based on the reception of TRS0 is f UE =f C +△f1;

[0279] Step 3: UE at carrier frequency f UE Send uplink reference signals, such as SRS;

[0280] Step 4: performing frequency offset estimation based on the uplink reference signal;

[0281] Here, it is assumed that TRP1 estimates the relative f C The frequency deviation is 2△f1 (the carrier frequency corresponding to TRP1 is f TRP1 =f UE +△f1=f C +△f1+△f1=f C +2△f1), TRP2 estimates relative to f C The frequency offset is △f1+△f2 (the carrier frequency corresponding to TRP2 is f TRP2 =f UE +△f2=f C +△f1+△f2); △f2 is the Doppler frequency offset corresponding to TRP2;

[0282] Step 5: The base station calculates the Doppler frequency offset pre-compensation value used by the user for TRP2;

[0283] Specifically, △f pre2 =△f1-△f2;

[0284] Step 6: The base station sends a DL scheduling DCI to the UE, where the DCI indicates a TCI-State, where the TCI-State indicates to the UE a reference signal TRS0 corresponding to 'QCL-TypeA' and a reference signal TRS1 corresponding to 'QCL-TypeE'; TRP1 and TRP2 are respectively at carrier frequencies f C and f C +△f pre2 =f C +△f1-△f2 sends DCI scheduled DMRS and PDSCH, and TRP1 is at carrier frequency f C Send TRS0; TRP2 at carrier frequency f C Send TRS1;

[0285] Step 7: UE at carrier frequency f C+△f1 receives TRS0, DMRS, and PDSCH. The UE determines the uplink carrier frequency as f based on the reception of TRS0. UE =f C +△f1; and TRS1 is used for delay-related estimation in DMRS channel estimation;

[0286] Here, the UE uses the carrier frequency f C Determine the uplink modulation carrier frequency, that is, the uplink modulation carrier frequency is f UE =f C +△f1;

[0287] Step 8: UE at carrier frequency f UE Send uplink reference signals, such as SRS;

[0288] Step 9: Perform frequency offset estimation based on the uplink reference signal, assuming that TRP1 estimates the relative frequency offset of f C The frequency offset is 2△f1, and TRP2 estimates the frequency offset relative to f C The frequency shift is △f1+△f2;

[0289] Step 10: The base station calculates a Doppler frequency offset pre-compensation value for TRP2;

[0290] Specifically, △f pre2 =△f1-△f2, continue to execute subsequent steps.

[0291] It should be noted that: since the periodic TRS is sent periodically, the above process is executed periodically, and the sequence of some of the above steps is only an example, not a strict sequence.

[0292] Application Example 3

[0293] The difference between this application embodiment and the second application embodiment is that the base station sends a first indication signaling to the UE through high-layer signaling or physical layer signaling, and the first indication signaling indicates a TCI-State for the UE, and the TCI-State indicates two reference signals corresponding to 'QCL-TypeA' for the UE: TRS0 and TRS1. And through pre-configuration or signaling indication, the UE is instructed that one of the reference signals (such as TRS1 in this embodiment) is only used for the estimation of average delay and / or delay spread. According to these indications, the UE uses TRS0 to estimate Doppler frequency offset, Doppler spread, average delay, and average spread, and the UE only uses TRS1 to estimate the average delay and / or delay spread, that is, the UE uses TRS0 to estimate Doppler frequency offset and Doppler spread, and the UE uses TRS0 and TRS1 together to estimate the average delay and / or delay spread.

[0294] Application Example 4

[0295] The difference between this application embodiment and application embodiment three is that the base station sends a first indication signaling to the UE through high-layer signaling or physical layer signaling, and the first indication signaling indicates 2 TCI-States for the UE, and each TCI-State indicates 1 reference signal corresponding to 'QCL-TypeA' for the UE: TRS0 or TRS1. And through pre-configuration or signaling indication, the UE is indicated that the reference signal of 'QCL-TypeA' corresponding to a certain TCI State (such as TRS1 in this embodiment) is only used for the estimation of average delay and / or delay spread. According to these indications, the UE uses TRS0 to estimate Doppler frequency offset, Doppler spread, average delay, and average spread, while the UE only uses TRS1 to estimate the average delay and / or delay spread, that is, the UE uses TRS0 to estimate Doppler frequency offset and Doppler spread, and the UE uses TRS0 and TRS1 together to estimate the average delay and / or delay spread.

[0296] In order to implement the method of the embodiment of the present application, the embodiment of the present application also provides an information transmission device, which is arranged on a network device, such as Figure 8 As shown, the device comprises:

[0297] The first sending unit 801 is configured to send first information to a terminal; the first information indicates a first reference signal used to determine at least one of the following parameters:

[0298] Average delay;

[0299] Delay spread.

[0300] In one embodiment, the first sending unit 801 is specifically configured to:

[0301] A first QCL type is sent to the terminal; the first QCL type corresponds to a first reference signal.

[0302] In one embodiment, the first sending unit 801 is specifically configured to:

[0303] Configure TCI-State for the terminal; the configuration parameters of TCI-State include the first QC type.

[0304] In one embodiment, the first sending unit 801 is specifically configured to send the first information to the terminal in one of the following ways:

[0305] RRC signaling;

[0306] MAC CE;

[0307] DCI.

[0308] In one embodiment, if Figure 8 As shown, the device may also include:

[0309] The third receiving unit 802 is configured to receive an uplink signal sent by the terminal; the modulated carrier frequency of the uplink signal is determined by using the second reference signal.

[0310] In one embodiment, if Figure 8 As shown, the device may also include:

[0311] The first determining unit 803 is configured to:

[0312] The received uplink signal is used to estimate the frequency offset and determine the Doppler frequency offset compensation value of at least one TRP; the at least one TRP does not include the TRP for sending the second reference signal.

[0313] In actual application, the first sending unit 801 and the third receiving unit 802 can be implemented by a communication interface in the information transmission device; the first determining unit 803 can be implemented by a processor in the information transmission device.

[0314] In order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application also provides an information transmission device, which is arranged on the terminal, such as Fig. 9 As shown, the device comprises:

[0315] The first receiving unit 901 is configured to receive first information sent by a network side; the first information indicates a first reference signal used to determine at least one of the following parameters:

[0316] Average delay;

[0317] Delay spread.

[0318] In one embodiment, the first receiving unit 901 is specifically configured to:

[0319] A first QCL type sent by the network side is received; the first QCL type corresponds to a first reference signal.

[0320] In one embodiment, the first receiving unit 901 is specifically configured to:

[0321] Receive TCI-State configuration parameters sent by the network side; the TCI-State configuration parameters include the first QCL type.

[0322] In one embodiment, the first receiving unit 901 is specifically configured to receive the first information sent by the network side in one of the following ways:

[0323] RRC signaling;

[0324] MAC CE;

[0325] DCI.

[0326] In one embodiment, if Fig. 9 As shown, the device may also include:

[0327] A second determining unit 902, configured to determine a modulation carrier frequency of an uplink signal using a second reference signal;

[0328] The third sending unit 903 is used to send an uplink signal on a determined modulated carrier frequency; the sent uplink signal can be used for the network side to determine the Doppler frequency offset compensation value of at least one TRP; the at least one TRP does not include the TRP that sends the second reference signal.

[0329] In actual application, the first receiving unit 901 and the third sending unit 903 can be implemented by a communication interface in the information transmission device; the second determining unit 902 can be implemented by a processor in the information transmission device.

[0330] In order to implement the method on the network device side of the embodiment of the present application, the embodiment of the present application also provides an information transmission device, which is arranged on the network device, such as Fig.10 As shown, the device comprises:

[0331] The second sending unit 1001 is configured to send second information to the terminal; the second information indicates at least one of the following:

[0332] The uplink modulation carrier frequency of the terminal is associated with the carrier frequency of receiving the third reference signal;

[0333] The uplink modulation carrier frequency of the terminal is unrelated to the carrier frequency of receiving the fourth reference signal.

[0334] In one embodiment, the second sending unit 1001 is specifically configured to send the second information to the terminal in one of the following ways:

[0335] RRC signaling;

[0336] MAC CE;

[0337] DCI.

[0338] In one embodiment, if Fig.10 As shown, the device may also include:

[0339] The fourth receiving unit 1002 is used to receive an uplink signal sent by the terminal; the modulated carrier frequency of the uplink signal is determined by using the third reference signal.

[0340] In one embodiment, if Fig.10 As shown, the device may also include:

[0341] The third determining unit 1003 is used to:

[0342] The received uplink signal is used to estimate the frequency offset and determine the Doppler frequency offset compensation value of at least one TRP.

[0343] In actual application, the second sending unit 1001 and the fourth receiving unit 1002 can be implemented by a communication interface in the information transmission device; the third determining unit 1003 can be implemented by a processor in the information transmission device.

[0344] In order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application also provides an information transmission device, which is arranged on the terminal, such as Fig.11 As shown, the device comprises:

[0345] The second receiving unit 1101 is configured to receive second information sent by the network side; the second information indicates at least one of the following:

[0346] The uplink modulation carrier frequency of the terminal is associated with the carrier frequency of receiving the third reference signal;

[0347] The uplink modulation carrier frequency of the terminal is not associated with the carrier frequency of receiving the fourth reference signal; wherein,

[0348] A first reference signal and a second reference signal are configured for the terminal.

[0349] In one embodiment, the second receiving unit 1101 is specifically configured to receive the second information sent by the network side in one of the following ways:

[0350] RRC signaling;

[0351] MAC CE;

[0352] DCI.

[0353] In one embodiment, if Fig.11 As shown, the device may also include:

[0354] The fourth determining unit 1102 is configured to determine a modulation carrier frequency of an uplink signal according to the third reference signal;

[0355] The fourth sending unit 1103 is used to send an uplink signal on a determined modulated carrier frequency; the sent uplink signal can be used for the network side to determine the Doppler frequency offset compensation value of at least one TRP; the at least one TRP sends the fourth reference signal and does not send the third reference signal.

[0356] In actual application, the second receiving unit 1101 and the fourth sending unit 1103 can be implemented by a communication interface in the information transmission device; the fourth determining unit 1102 can be implemented by a processor in the information transmission device.

[0357] It should be noted that: the information transmission device provided in the above embodiment only uses the division of the above program modules as an example when performing information transmission. In actual applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the information transmission device provided in the above embodiment and the information transmission method embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0358] Based on the hardware implementation of the above program modules, and in order to implement the method of the network device side of the embodiment of the present application, the embodiment of the present application also provides a network device, such as Fig.12 As shown, the network device 1200 includes:

[0359] The first communication interface 1201 is capable of exchanging information with the terminal;

[0360] The first processor 1202 is connected to the first communication interface 1201 to implement information interaction with the terminal, and is used to execute the method provided by one or more technical solutions on the network device side when running a computer program. The computer program is stored in the first memory 1203.

[0361] Specifically, in the processing flow of indicating a reference signal used by a terminal for delay estimation,

[0362] The first communication interface 1201 is used to send first information to the terminal; the first information indicates a first reference signal used to determine at least one of the following parameters:

[0363] Average delay;

[0364] Delay spread.

[0365] In one embodiment, the first communication interface 1201 is used to send first information to the terminal; the first information indicates a first reference signal used to determine at least one of the following parameters:

[0366] Average delay;

[0367] Delay spread.

[0368] In one embodiment, the first communication interface 1201 is specifically used for:

[0369] A first QCL type is sent to the terminal; the first QCL type corresponds to a first reference signal.

[0370] In one embodiment, the first communication interface 1201 is specifically used for:

[0371] Configure TCI-State for the terminal; the configuration parameters of TCI-State include the first QC type.

[0372] In one embodiment, the first communication interface 1201 is specifically configured to send the first information to the terminal in one of the following ways:

[0373] RRC signaling;

[0374] MAC CE;

[0375] DCI.

[0376] In one embodiment, the first communication interface 1201 is used to receive an uplink signal sent by the terminal; the modulation carrier frequency of the uplink signal is determined by using a second reference signal.

[0377] In one embodiment, the first processor 1202 is configured to:

[0378] The received uplink signal is used to estimate the frequency offset and determine the Doppler frequency offset compensation value of at least one TRP; the at least one TRP does not include the TRP for sending the second reference signal.

[0379] In the processing flow of indicating which downlink reference signal's carrier frequency the terminal carrier frequency is associated with and / or which downlink reference signal's carrier frequency is unrelated to, the first communication interface 1201 is used to send second information to the terminal; the second information indicates at least one of the following:

[0380] The uplink modulation carrier frequency of the terminal is associated with the carrier frequency of receiving the third reference signal;

[0381] The uplink modulation carrier frequency of the terminal is unrelated to the carrier frequency of receiving the fourth reference signal.

[0382] In one embodiment, the first communication interface 1201 is specifically used to send the second information to the terminal in one of the following ways:

[0383] RRC signaling;

[0384] MAC CE;

[0385] DCI.

[0386] In one embodiment, the first communication interface 1201 is further used to receive an uplink signal sent by the terminal; the modulation carrier frequency of the uplink signal is determined by using the third reference signal.

[0387] In one embodiment, the first processor 1202 is configured to:

[0388] The received uplink signal is used to estimate the frequency offset and determine the Doppler frequency offset compensation value of at least one TRP; the at least one TRP sends the fourth reference signal and does not send the third reference signal.

[0389] It should be noted that the specific processing process of the first communication interface 1201 and the first processor 1202 can be understood by referring to the above method.

[0390] Of course, in actual application, the various components in the network device 1200 are coupled together through the bus system 1204. It can be understood that the bus system 1204 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1204 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, Fig.12 Various buses are labeled as bus system 1204.

[0391] The first memory 1203 in the embodiment of the present application is used to store various types of data to support the operation of the network device 1200. Examples of such data include: any computer program used to operate on the network device 1200.

[0392] The method disclosed in the above embodiment of the present application can be applied to the first processor 1202, or implemented by the first processor 1202. The first processor 1202 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of the hardware in the first processor 1202 or an instruction in the form of software. The above-mentioned first processor 1202 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The first processor 1202 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in the first memory 1203, and the first processor 1202 reads the information in the first memory 1203 and completes the steps of the above method in combination with its hardware.

[0393] In an exemplary embodiment, the network device 1200 may be implemented by one or more application specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to execute the aforementioned method.

[0394] Based on the hardware implementation of the above program modules, and in order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application also provides a terminal, such as Fig.13 As shown, the terminal 1300 includes:

[0395] The second communication interface 1301 is capable of exchanging information with the first communication node;

[0396] The second processor 1302 is connected to the second communication interface 1301 to implement information interaction with the network device, and is used to execute the method provided by one or more technical solutions of the terminal side when running the computer program. The computer program is stored in the second memory 1303.

[0397] Specifically, in the processing flow of indicating a reference signal used by the terminal for delay estimation, the second communication interface 1301 is used to receive first information sent by the network side; the first information indicates a first reference signal used to determine at least one of the following parameters:

[0398] Average delay;

[0399] Delay spread.

[0400] In one embodiment, the second communication interface 1301 is specifically used for:

[0401] A first QCL type sent by the network side is received; the first QCL type corresponds to a first reference signal.

[0402] In one embodiment, the second communication interface 1301 is specifically used for:

[0403] Receive TCI-State configuration parameters sent by the network side; the TCI-State configuration parameters include the first QCL type.

[0404] In one embodiment, the second communication interface 1301 is specifically used to receive the first information sent by the network side in one of the following ways:

[0405] RRC signaling;

[0406] MAC CE;

[0407] DCI.

[0408] In one embodiment, the second processor 1302 is configured to determine a modulation carrier frequency of an uplink signal using a second reference signal;

[0409] The second communication interface 1301 is also used to send an uplink signal on a determined modulated carrier frequency; the sent uplink signal can be used for the network side to determine the Doppler frequency offset compensation value of at least one TRP; the at least one TRP does not include the TRP that sends the second reference signal.

[0410] In the processing flow of indicating which downlink reference signal's carrier frequency the terminal carrier frequency is associated with and / or which downlink reference signal's carrier frequency is unrelated to, the second communication interface 1301 is used to send second information to the terminal; the second information indicates at least one of the following:

[0411] The uplink modulation carrier frequency of the terminal is associated with the carrier frequency of receiving the third reference signal;

[0412] The uplink modulation carrier frequency of the terminal is unrelated to the carrier frequency of receiving the fourth reference signal.

[0413] In one embodiment, the second communication interface 1301 is specifically used to receive the second information sent by the network side in one of the following ways:

[0414] RRC signaling;

[0415] MAC CE;

[0416] DCI.

[0417] In one embodiment, the second processor 1302 is configured to determine a modulation carrier frequency of an uplink signal according to the third reference signal;

[0418] The second communication interface 1301 is also used to send an uplink signal on a determined modulated carrier frequency; the sent uplink signal can be used for the network side to determine the Doppler frequency offset compensation value of at least one TRP; the at least one TRP sends the fourth reference signal and does not send the third reference signal.

[0419] It should be noted that the specific processing process of the second processor 1302 and the second communication interface 1301 can be understood by referring to the above method.

[0420] Of course, in actual application, the various components in the terminal 1300 are coupled together through the bus system 1304. It can be understood that the bus system 1304 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1304 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, Fig.13 Various buses are labeled as bus system 1304 .

[0421] The second memory 1303 in the embodiment of the present application is used to store various types of data to support the operation of the terminal 1300. Examples of such data include: any computer program used to operate on the terminal 1300.

[0422] The method disclosed in the above embodiment of the present application can be applied to the second processor 1302, or implemented by the second processor 1302. The second processor 1302 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the second processor 1302. The above-mentioned second processor 1302 may be a general-purpose processor, DSP, or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The second processor 1302 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in the second memory 1303, and the second processor 1302 reads the information in the second memory 1303 and completes the steps of the above method in combination with its hardware.

[0423] In an exemplary embodiment, the terminal 1300 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general purpose processors, controllers, MCUs, Microprocessors, or other electronic components to perform the aforementioned methods.

[0424] It can be understood that the memory (first memory 1203, second memory 1303) of the embodiment of the present application can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a ferromagnetic random access memory, a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), and direct RAM bus random access memory (DRRAM, Direct Rambus Random Access Memory).The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0425] In order to implement the method of the embodiment of the present application, the embodiment of the present application also provides an information transmission system, such as Fig.14 As shown, the system includes: a network device 1401 and a terminal 1402.

[0426] It should be noted that the specific processing procedures of the network device 1401 and the terminal 1402 have been described in detail above and will not be repeated here.

[0427] In an exemplary embodiment, the embodiment of the present application further provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 1203 storing a computer program, and the computer program can be executed by the first processor 1202 of the network device 1200 to complete the steps of the aforementioned first communication node side method. For another example, a second memory 1303 storing a computer program can be executed by the second processor 1302 of the terminal 1300 to complete the steps of the aforementioned second communication node side method. The computer-readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface storage, optical disk, or CD-ROM.

[0428] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0429] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0430] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. An information transmission method, characterized in that: Applied to network equipment, including: Sending first information to the terminal; the first information indicates two transmission configuration indication states TCI-State; wherein each TCI-State indicates a reference signal corresponding to the quasi-co-location type QCL-TypeA, and the QCL-TypeA includes Doppler frequency offset, Doppler spread, average delay, average spread, and combined with pre-configuration or signaling indication, wherein the reference signal corresponding to QCL-TypeA indicated by one of the TCI-States is only used for average delay and / or delay spread, or, the reference signal corresponding to QCL-TypeA indicated by one of the TCI-States is not used for Doppler frequency offset and Doppler spread.

2. The method according to claim 1, characterized in that Sending the first information to the terminal in one of the following ways: Radio Resource Control (RRC) signaling; Media access control control unit MAC CE; Downlink control information DCI.

3. The method according to any one of claims 1 to 2, characterized in that: The method further comprises: An uplink signal sent by the terminal is received; the modulation carrier frequency of the uplink signal is determined by using a second reference signal.

4. An information transmission method, characterized in that: Applied to terminals, including: Receive the first information sent by the network side; the first information indicates two TCI-States; wherein each TCI-State indicates a reference signal corresponding to QCL-TypeA, and the QCL-TypeA includes Doppler frequency offset, Doppler spread, average delay, average spread, and combined with pre-configuration or signaling indication, the reference signal corresponding to QCL-TypeA indicated by one TCI-State is only used for average delay and / or delay spread, or, the reference signal corresponding to QCL-TypeA indicated by one TCI-State is not used for Doppler frequency offset and Doppler spread.

5. The method according to claim 4, characterized in that Receive the first information sent by the network side in one of the following ways: RRC signaling; MAC CE; DCI.

6. The method according to any one of claims 4 to 5, characterized in that: The method further comprises: Determining a modulation carrier frequency of an uplink signal using a second reference signal; The uplink signal is sent on a determined modulated carrier frequency.

7. An information transmission device, characterized in that: include: A first sending unit, configured to send first information to a terminal; The first information indicates two TCI-States; wherein each TCI-State indicates a reference signal corresponding to QCL-TypeA, and the QCL-TypeA includes Doppler frequency offset, Doppler spread, average delay, average spread, and combined with pre-configuration or signaling indication, wherein the reference signal corresponding to QCL-TypeA indicated by one of the TCI-States is only used for average delay and / or delay spread, or, the reference signal corresponding to QCL-TypeA indicated by one of the TCI-States is not used for Doppler frequency offset and Doppler spread.

8. An information transmission device, characterized in that: include: A first receiving unit, configured to receive first information sent by a network side; The first information indicates two TCI-States; wherein each TCI-State indicates a reference signal corresponding to QCL-TypeA, and the QCL-TypeA includes Doppler frequency offset, Doppler spread, average delay, average spread, and combined with pre-configuration or signaling indication, wherein the reference signal corresponding to QCL-TypeA indicated by one of the TCI-States is only used for average delay and / or delay spread, or, the reference signal corresponding to QCL-TypeA indicated by one of the TCI-States is not used for Doppler frequency offset and Doppler spread.

9. A network device, characterized in that: include: A first communication interface and a first processor; wherein, The first communication interface is used to send first information to the terminal; the first information indicates two TCI-States; wherein each TCI-State indicates a reference signal corresponding to QCL-TypeA, and the QCL-TypeA includes Doppler frequency offset, Doppler spread, average delay, average spread, and combined with pre-configuration or signaling indication, the reference signal corresponding to QCL-TypeA indicated by one of the TCI-States is only used for average delay and / or delay spread, or, the reference signal corresponding to QCL-TypeA indicated by one of the TCI-States is not used for Doppler frequency offset and Doppler spread.

10. A terminal, characterized in that: include: A second communication interface and a second processor; wherein, The second communication interface is used to receive first information sent by the network side; the first information indicates two TCI-States; wherein each TCI-State indicates a reference signal corresponding to QCL-TypeA, and the QCL-TypeA includes Doppler frequency offset, Doppler spread, average delay, average spread, and combined with pre-configuration or signaling indication, the reference signal corresponding to QCL-TypeA indicated by one of the TCI-States is only used for average delay and / or delay spread, or, the reference signal corresponding to QCL-TypeA indicated by one of the TCI-States is not used for Doppler frequency offset and Doppler spread.

11. A network device, characterized in that: include: a first processor and a first memory for storing a computer program executable on the processor, Wherein, when the first processor is used to run the computer program, the steps of the method described in any one of claims 1 to 3 are executed.

12. A terminal, characterized in that: include: a second processor and a second memory for storing a computer program executable on the processor, Wherein, when the second processor is used to run the computer program, the steps of the method described in any one of claims 4 to 6 are executed.

13. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the computer program implements the steps of the method according to any one of claims 1 to 3, or implements the steps of the method according to any one of claims 4 to 6.

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