A channel estimation method and related equipment

Abstract

The present invention provides a channel estimation method and related devices, relating to the field of communications technology. The method includes instructing a second terminal to transmit a channel estimation model to a first terminal, so that the first terminal performs channel estimation based on the channel estimation model and a pilot signal transmitted by the first base station. Embodiments of the present invention can improve the accuracy of channel estimation performed by a terminal.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a channel estimation method and related equipment. Background Art

[0002] After data is transmitted from the transmitter, it propagates through the wireless channel to the receiver. Various interference factors in the wireless channel can affect the transmitted data, so the data received by the receiver may not be exactly the same as the data sent by the transmitter. Channel estimation is often required to equalize the received data and recover the data despite the channel effects. Currently, a pilot signal known to the receiver is typically transmitted along with the data signal. The receiver estimates the channel response experienced by the pilot signal based on the received pilot signal and the known pilot signal, thereby deriving the channel response for the data signal.

[0003] In the prior art, a terminal performs channel estimation through an initially configured channel estimation model. However, due to the complex and changeable environment in which the terminal is located, the initially configured channel estimation model is difficult to adapt to various complex environments, and the accuracy of the channel estimation performed by the terminal is low. Summary of the Invention

[0004] The embodiment of the present invention provides a channel estimation method and related devices to solve the problem of low accuracy of channel estimation performed by existing terminals.

[0005] To solve the above-mentioned technical problems, the present invention is achieved as follows:

[0006] In a first aspect, an embodiment of the present invention provides a channel estimation method, for use in a first base station, the method comprising:

[0007] Instruct the second terminal to send a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and the pilot signal sent by the first base station.

[0008] Optionally, before instructing the second terminal to send the channel estimation model to the first terminal, the method further includes:

[0009] receiving target information, where the target information includes at least one of the following: measurement information of the first terminal, and a first channel service identifier of the first terminal;

[0010] The instructing the second terminal to send the channel estimation model to the first terminal includes:

[0011] The second terminal is instructed to send a channel estimation model to the first terminal based on the target information.

[0012] Optionally, the target information includes the measurement information, and after receiving the target information, the method further includes:

[0013] determining a second terminal that matches the measurement information;

[0014] Sending first indication information to the first terminal, and / or sending second indication information to the second terminal;

[0015] The first indication information is used to instruct the first terminal to establish a connection with the second terminal, and the second indication information is used to instruct the second terminal to establish a connection with the first terminal.

[0016] Optionally, the second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier.

[0017] Optionally, the target information further includes the first channel service identifier, and determining the second terminal matching the measurement information includes:

[0018] Searching for the first channel service identifier in the stored identifier set;

[0019] If the first channel service identifier is not found in the identifier set, a second terminal matching the measurement information is determined.

[0020] Optionally, the receiving target information includes:

[0021] receiving target information sent by the first terminal; or,

[0022] Receive target information sent by a second base station, wherein the first base station is a source base station for the first terminal to perform base station switching, and the second base station is a target base station for the first terminal to perform base station switching.

[0023] Optionally, after instructing the second terminal to send the channel estimation model to the first terminal, the method further includes:

[0024] receiving third indication information sent by the first terminal, where the third indication information is used to indicate that the channel estimation model has completed reception;

[0025] The pilot signal is sent to the first terminal.

[0026] Optionally, after receiving the third indication information sent by the first terminal, the method further includes:

[0027] A correspondence between the second channel service identifier corresponding to the channel estimation model and the first terminal is added to the identifier set.

[0028] In a second aspect, an embodiment of the present invention provides a channel estimation method for a first terminal, the method including:

[0029] receiving a channel estimation model sent by a second terminal;

[0030] Performing channel estimation based on the channel estimation model and the pilot signal sent by the first base station;

[0031] The channel estimation model is sent by the first base station to the second terminal via the instruction of the first base station.

[0032] Optionally, before receiving the channel estimation model sent by the second terminal, the method further includes:

[0033] Sending target information to the first base station, where the target information includes at least one of the following: measurement information and a first channel service identifier;

[0034] The channel estimation model is sent by the first base station to the first terminal by instructing the second terminal based on the target information.

[0035] Optionally, the target information includes the measurement information, and after sending the target information to the first base station, the method further includes:

[0036] receiving first indication information sent by the first base station, where the first indication information is used to instruct the first terminal to establish a connection with a second terminal, where the second terminal is a terminal matching the measurement information;

[0037] Establish a connection with the second terminal.

[0038] Optionally, the target information further includes the first channel service identifier, and the receiving the first indication information sent by the first base station includes:

[0039] When the first channel service identifier is not found in the identifier set stored by the first base station, first indication information sent by the first base station is received.

[0040] Optionally, after receiving the channel estimation model sent by the second terminal, the method further includes:

[0041] Sending third indication information to the first base station, where the third indication information is used to indicate that the channel estimation model has completed reception;

[0042] Receive the pilot signal sent by the first base station.

[0043] Optionally, the channel estimation model corresponds to a second channel service identifier, and the second channel service identifier corresponds to the second terminal.

[0044] In a third aspect, an embodiment of the present invention provides a channel estimation method for a second terminal, the method including:

[0045] Sending a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and a pilot signal sent by the first base station;

[0046] The channel estimation model is sent by the first base station to the second terminal via the instruction of the first base station.

[0047] Optionally, the channel estimation model is sent by the first base station to the first terminal by instructing the second terminal based on target information, and the target information includes at least one of the following: measurement information, and a first channel service identifier.

[0048] Optionally, the target information includes the measurement information, and before sending the channel estimation model to the first terminal, the method further includes:

[0049] receiving second indication information sent by the first base station, where the second indication information is used to instruct the second terminal to establish a connection with the first terminal, and the second terminal matches the measurement information;

[0050] Establish a connection with the first terminal.

[0051] Optionally, the second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier.

[0052] Optionally, the target information further includes the first channel service identifier, and the receiving the second indication information sent by the first base station includes:

[0053] When the first channel service identifier is not found in the identifier set stored by the first base station, second indication information sent by the first base station is received.

[0054] In a fourth aspect, an embodiment of the present invention provides a base station, where the base station is a first base station, and the base station includes:

[0055] The instruction module is used to instruct the second terminal to send a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and the pilot signal sent by the first base station.

[0056] Optionally, the base station further includes:

[0057] A first receiving module is configured to receive target information, where the target information includes at least one of the following: measurement information of the first terminal and a first channel service identifier of the first terminal;

[0058] The indication module is specifically used for:

[0059] The second terminal is instructed to send a channel estimation model to the first terminal based on the target information.

[0060] Optionally, the target information includes the measurement information, and the base station further includes:

[0061] a determining module, configured to determine a second terminal that matches the measurement information;

[0062] a first sending module, configured to send first indication information to the first terminal, and / or send second indication information to the second terminal;

[0063] The first indication information is used to instruct the first terminal to establish a connection with the second terminal, and the second indication information is used to instruct the second terminal to establish a connection with the first terminal.

[0064] Optionally, the second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier.

[0065] Optionally, the target information further includes the first channel service identifier, and the determining module is specifically configured to:

[0066] Searching for the first channel service identifier in the stored identifier set;

[0067] If the first channel service identifier is not found in the identifier set, a second terminal matching the measurement information is determined.

[0068] Optionally, the first receiving module is specifically configured to:

[0069] receiving target information sent by the first terminal; or,

[0070] Receive target information sent by a second base station, wherein the first base station is a source base station for the first terminal to perform base station switching, and the second base station is a target base station for the first terminal to perform base station switching.

[0071] Optionally, the base station further includes:

[0072] A second receiving module is configured to receive third indication information sent by the first terminal, where the third indication information is used to indicate that the channel estimation model has completed reception;

[0073] The second sending module is configured to send the pilot signal to the first terminal.

[0074] Optionally, the base station further includes:

[0075] An adding module is used to add a corresponding relationship between the second channel service identifier corresponding to the channel estimation model and the first terminal in the identifier set.

[0076] In a fifth aspect, an embodiment of the present invention provides a terminal, which is a first terminal and includes:

[0077] A first receiving module, configured to receive a channel estimation model sent by a second terminal;

[0078] an estimation module, configured to perform channel estimation based on the channel estimation model and a pilot signal sent by the first base station;

[0079] The channel estimation model is sent by the first base station to the second terminal via the instruction of the first base station.

[0080] Optionally, the terminal further includes:

[0081] A first sending module is configured to send target information to the first base station, where the target information includes at least one of the following: measurement information and a first channel service identifier;

[0082] The channel estimation model is sent by the first base station to the first terminal by instructing the second terminal based on the target information.

[0083] Optionally, the target information includes the measurement information, and the terminal further includes:

[0084] a second receiving module, configured to receive first indication information sent by the first base station, where the first indication information is used to instruct the first terminal to establish a connection with a second terminal, where the second terminal is a terminal matching the measurement information;

[0085] A connection module is configured to establish a connection with the second terminal.

[0086] Optionally, the target information further includes the first channel service identifier, and the second receiving module is specifically configured to:

[0087] When the first channel service identifier is not found in the identifier set stored by the first base station, first indication information sent by the first base station is received.

[0088] Optionally, the terminal further includes:

[0089] A second sending module is used to send third indication information to the first base station, where the third indication information is used to indicate that the channel estimation model has completed reception;

[0090] The third receiving module is configured to receive the pilot signal sent by the first base station.

[0091] Optionally, the channel estimation model corresponds to a second channel service identifier, and the second channel service identifier corresponds to the second terminal.

[0092] In a sixth aspect, an embodiment of the present invention provides a terminal, which is a second terminal and includes:

[0093] a sending module, configured to send a channel estimation model to a first terminal, so that the first terminal performs channel estimation based on the channel estimation model and a pilot signal sent by the first base station;

[0094] The channel estimation model is sent by the first base station to the second terminal via the instruction of the first base station.

[0095] Optionally, the channel estimation model is sent by the first base station to the first terminal by instructing the second terminal based on target information, and the target information includes at least one of the following: measurement information, and a first channel service identifier.

[0096] Optionally, the target information includes the measurement information, and the terminal includes:

[0097] a receiving module, configured to receive second indication information sent by the first base station, where the second indication information is used to instruct the second terminal to establish a connection with the first terminal, and the second terminal matches the measurement information;

[0098] A connection module is configured to establish a connection with the first terminal.

[0099] Optionally, the second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier.

[0100] Optionally, the target information further includes the first channel service identifier, and the receiving module is specifically configured to:

[0101] When the first channel service identifier is not found in the identifier set stored by the first base station, second indication information sent by the first base station is received.

[0102] In a seventh aspect, an embodiment of the present invention provides a base station, which is a first base station and includes a transceiver and a processor.

[0103] The processor is configured to instruct the second terminal to send a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and a pilot signal sent by the first base station.

[0104] Optionally, the transceiver is configured to: receive target information, where the target information includes at least one of the following: measurement information of the first terminal, and a first channel service identifier of the first terminal;

[0105] The processor is further configured to:

[0106] The second terminal is instructed to send a channel estimation model to the first terminal based on the target information.

[0107] Optionally, the target information includes the measurement information, and the processor is further configured to:

[0108] determining a second terminal that matches the measurement information;

[0109] The transceiver is further configured to: send first indication information to the first terminal, and / or send second indication information to the second terminal;

[0110] The first indication information is used to instruct the first terminal to establish a connection with the second terminal, and the second indication information is used to instruct the second terminal to establish a connection with the first terminal.

[0111] Optionally, the second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier.

[0112] Optionally, the target information further includes the first channel service identifier, and the processor is further configured to:

[0113] Searching for the first channel service identifier in the stored identifier set;

[0114] If the first channel service identifier is not found in the identifier set, a second terminal matching the measurement information is determined.

[0115] Optionally, the transceiver is further used to:

[0116] receiving target information sent by the first terminal; or,

[0117] Receive target information sent by a second base station, wherein the first base station is a source base station for the first terminal to perform base station switching, and the second base station is a target base station for the first terminal to perform base station switching.

[0118] Optionally, the transceiver is further used to:

[0119] receiving third indication information sent by the first terminal, where the third indication information is used to indicate that the channel estimation model has completed reception;

[0120] The pilot signal is sent to the first terminal.

[0121] Optionally, the processor is further configured to:

[0122] A correspondence between the second channel service identifier corresponding to the channel estimation model and the first terminal is added to the identifier set.

[0123] In an eighth aspect, an embodiment of the present invention provides a terminal, which is a first terminal and includes a transceiver and a processor.

[0124] The transceiver is configured to receive a channel estimation model sent by the second terminal;

[0125] The processor is configured to perform channel estimation based on the channel estimation model and the pilot signal sent by the first base station;

[0126] The channel estimation model is sent by the first base station to the second terminal via the instruction of the first base station.

[0127] Optionally, the transceiver is further configured to: send target information to the first base station, the target information including at least one of the following: measurement information, a first channel service identifier;

[0128] The channel estimation model is sent by the first base station to the first terminal by instructing the second terminal based on the target information.

[0129] Optionally, the target information includes the measurement information, and the transceiver is further configured to: receive first indication information sent by the first base station, where the first indication information is used to instruct the first terminal to establish a connection with a second terminal, where the second terminal is a terminal matching the measurement information;

[0130] The processor is further configured to establish a connection with the second terminal.

[0131] Optionally, the target information further includes the first channel service identifier, and the transceiver is further configured to:

[0132] When the first channel service identifier is not found in the identifier set stored by the first base station, first indication information sent by the first base station is received.

[0133] Optionally, the transceiver is further used to:

[0134] Sending third indication information to the first base station, where the third indication information is used to indicate that the channel estimation model has completed reception;

[0135] Receive the pilot signal sent by the first base station.

[0136] Optionally, the channel estimation model corresponds to a second channel service identifier, and the second channel service identifier corresponds to the second terminal.

[0137] In a ninth aspect, an embodiment of the present invention provides a terminal, which is a second terminal and includes a transceiver and a processor.

[0138] The transceiver is configured to send a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and a pilot signal sent by the first base station;

[0139] The channel estimation model is sent by the first base station to the second terminal via the instruction of the first base station.

[0140] Optionally, the channel estimation model is sent by the first base station to the first terminal by instructing the second terminal based on target information, and the target information includes at least one of the following: measurement information, and a first channel service identifier.

[0141] Optionally, the target information includes the measurement information, and the transceiver is further configured to:

[0142] receiving second indication information sent by the first base station, where the second indication information is used to instruct the second terminal to establish a connection with the first terminal, and the second terminal matches the measurement information;

[0143] The processor is configured to establish a connection with the first terminal.

[0144] Optionally, the second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier.

[0145] Optionally, the target information further includes the first channel service identifier, and the transceiver is further configured to:

[0146] When the first channel service identifier is not found in the identifier set stored by the first base station, second indication information sent by the first base station is received.

[0147] In the tenth aspect, an embodiment of the present invention provides a base station, which is a first base station, comprising: a processor, a memory, and a program stored on the memory and runnable on the processor, wherein the program, when executed by the processor, implements the steps of the channel estimation method described in the first aspect above.

[0148] In the eleventh aspect, an embodiment of the present invention provides a terminal, comprising: a processor, a memory, and a program stored on the memory and runnable on the processor, wherein when the program is executed by the processor, the steps of the channel estimation method described in the second aspect are implemented; or when the program is executed by the processor, the steps of the channel estimation method described in the third aspect are implemented.

[0149] In the twelfth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the channel estimation method described in the first aspect are implemented; or when the computer program is executed by a processor, the steps of the channel estimation method described in the second aspect are implemented; or when the computer program is executed by a processor, the steps of the channel estimation method described in the third aspect are implemented.

[0150] In an embodiment of the present invention, the first base station instructs the second terminal to send a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and the pilot signal sent by the first base station. In this way, the first terminal can obtain the channel estimation model from the second terminal to perform channel estimation on the pilot signal sent by the first base station, which can avoid using a single channel estimation model for channel estimation and improve the accuracy of the channel estimation performed by the first terminal; and avoid the base station sending the channel estimation model, and use the collaboration between terminals to share the pressure of the base station downlink transmission channel estimation model, thereby reducing the downlink transmission pressure of the base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0151] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0152] Figure 1 is a flow chart of a channel estimation method provided by an embodiment of the present invention;

[0153] Figure 2 is a flow chart of another channel estimation method provided by an embodiment of the present invention;

[0154] Figure 3 is a flow chart of another channel estimation method provided by an embodiment of the present invention;

[0155] Figure 4 is a flow chart of another channel estimation method provided by an embodiment of the present invention;

[0156] Figure 5is a flow chart of another channel estimation method provided by an embodiment of the present invention;

[0157] Figure 6 This is a schematic structural diagram of a base station provided by an embodiment of the present invention;

[0158] Figure 7 This is a schematic diagram of the structure of a terminal provided by an embodiment of the present invention;

[0159] Figure 8 is a schematic structural diagram of another terminal provided by an embodiment of the present invention;

[0160] Figure 9 is a schematic structural diagram of another base station provided by an embodiment of the present invention;

[0161] Figure 10 It is a structural diagram of another terminal provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0162] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0163] In an embodiment of the present invention, a channel estimation method and related devices are proposed to solve the problem of low accuracy of channel estimation performed by existing terminals.

[0164] See also Figure 1 , Figure 1 Flowchart of a channel estimation method provided by an embodiment of the present invention, for a first base station, such as Figure 1 As shown, the method includes the following steps:

[0165] Step 101: Instruct a second terminal to send a channel estimation model to a first terminal, so that the first terminal performs channel estimation based on the channel estimation model and a pilot signal sent by the first base station.

[0166] The first base station may instruct the second terminal to send a channel estimation model to the first terminal based on target information sent by the first terminal, and the target information may include at least one of the following: measurement information of the first terminal, and a first channel service identifier of the first terminal.

[0167] In addition, the first base station can compare and distinguish the first channel service identifier and the stored identifier set. If the first channel service identifier of the first terminal is not found in the stored identifier set, the second terminal that matches the measurement information is determined through the measurement information of the first terminal, and the second terminal is instructed to send a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and the pilot signal sent by the first base station.

[0168] It should be noted that, compared with the base station sending a channel estimation model to the terminal for channel estimation, the embodiment of the present invention sends a channel estimation model to the first terminal through the second terminal for channel estimation, thereby utilizing the collaboration between terminals to share the pressure of the base station downlink transmission model and reduce the downlink transmission pressure of the base station.

[0169] In an embodiment of the present invention, the first base station instructs the second terminal to send a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and the pilot signal sent by the first base station. In this way, the first terminal can obtain the channel estimation model from the second terminal to perform channel estimation on the pilot signal sent by the first base station, which can avoid using a single channel estimation model for channel estimation and improve the accuracy of the channel estimation performed by the first terminal; and avoid the base station sending the channel estimation model, and use the collaboration between terminals to share the pressure of the base station downlink transmission channel estimation model, thereby reducing the downlink transmission pressure of the base station.

[0170] Optionally, before instructing the second terminal to send the channel estimation model to the first terminal, the method further includes:

[0171] receiving target information, where the target information includes at least one of the following: measurement information of the first terminal, and a first channel service identifier of the first terminal;

[0172] The instructing the second terminal to send the channel estimation model to the first terminal includes:

[0173] The second terminal is instructed to send a channel estimation model to the first terminal based on the target information.

[0174] Among them, the channel service identifier (Channel Service ID) can be a global variable. Each base station can have multiple different channel service identifiers, and the channel estimation model remains consistent under the same channel service identifier. The terminals under a base station or several surrounding base stations can correspond to one channel service identifier at the same time, or they can correspond to different channel service identifiers. The channel service identifier can be composed of multiple bits, and the channel service identifier can be related to the signal-to-noise ratio, Rice's K factor, applicable mobile speed range, applicable business scenarios and localization parameters. Specifically, the composition of the channel service identifier includes but is not limited to at least one of the signal-to-noise ratio, Rice's K factor, applicable mobile speed range, applicable business scenarios and localization parameters.

[0175] In addition, when the target information includes measurement information of the first terminal, the first base station can determine a second terminal that matches the measurement information, and instruct the first terminal to establish a connection with the second terminal, so that the first terminal can receive the channel estimation model sent by the second terminal based on the established connection, and perform channel estimation based on the channel estimation model and the pilot signal sent by the first base station.

[0176] In addition, when the target information includes the first channel service identifier of the first terminal and the measurement information of the first base station, the first base station can search for the first channel service identifier in the stored identifier set. If the first channel service identifier is not found in the identifier set, the first base station determines the second terminal that matches the measurement information of the first base station, so that the first terminal can obtain a channel estimation model from the second terminal and perform channel estimation based on the channel estimation model and the pilot signal sent by the first base station.

[0177] It should be noted that the measurement information may include a measurement report, and the measurement report may include information such as Reference Signal Receiving Power (RSRP) and moving speed.

[0178] In this embodiment, the second terminal is instructed to send a channel estimation model to the first terminal based on the measurement information of the first terminal and / or the first channel service identifier of the first terminal, so that the first terminal can obtain a channel estimation model that is more closely matched with the measurement information of the first terminal, thereby improving the accuracy of channel estimation performed by the first terminal.

[0179] Optionally, the target information includes the measurement information, and after receiving the target information, the method further includes:

[0180] determining a second terminal that matches the measurement information;

[0181] Sending first indication information to the first terminal, and / or sending second indication information to the second terminal;

[0182] The first indication information is used to instruct the first terminal to establish a connection with the second terminal, and the second indication information is used to instruct the second terminal to establish a connection with the first terminal.

[0183] The second terminal that matches the measurement information of the first terminal may have the same measurement information as the first terminal, or the measurement information of the second terminal may be similar to the measurement information of the first terminal. For example, if the measurement information includes mobile speed, the second terminal may be a terminal connected to the first base station whose mobile speed differs from the mobile speed of the first terminal by less than a preset difference. Matching can be performed among terminals connected to the first base station to determine the second terminal that matches the measurement information of the first terminal.

[0184] In addition, the second indication information may include a model download instruction and a first pairing and connection instruction. The model download instruction may include a second channel service identifier, and the second terminal corresponds to the second channel service identifier in the identifier set stored by the first base station. The model download instruction may also include information such as the model version of the channel estimation model. The first pairing and connection instruction is used to instruct the second terminal to pair and connect with the first terminal. The first indication information may include a second pairing and connection instruction, and the second pairing and connection instruction is used to instruct the first terminal to pair and connect with the second terminal.

[0185] It should be noted that currently reducing pilot overhead is of great significance to the communication system, and the terminal performs channel estimation through the initially configured channel estimation model, and there is little room for reducing pilot overhead. In an embodiment of the present invention, a second terminal matching the measurement information of the first terminal sends a channel estimation model to the first terminal for channel estimation. Since the first terminal and the second terminal have the same or similar localized channel characteristics, the accuracy of the channel estimation performed by the first terminal can be improved, so that the first base station sends the pilot signal in a sparse manner, and can also obtain higher channel estimation accuracy, thereby reducing the pilot overhead.

[0186] Optionally, the second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier.

[0187] Each channel service identifier may correspond to a channel estimation model. The second terminal corresponds to the second channel service identifier in the identifier set stored by the first base station. The second indication information includes the second channel service identifier corresponding to the second terminal, so that after receiving the second indication information, the second terminal can send the channel estimation model corresponding to the second channel service identifier to the first terminal.

[0188] In this embodiment, the second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier, so that the first terminal can obtain the channel estimation model corresponding to the second channel service identifier, which can improve the accuracy of the channel estimation performed by the first terminal.

[0189] Optionally, the target information further includes the first channel service identifier, and determining the second terminal matching the measurement information includes:

[0190] Searching for the first channel service identifier in the stored identifier set;

[0191] If the first channel service identifier is not found in the identifier set, a second terminal matching the measurement information is determined.

[0192] The identifier set may store a correspondence between channel service identifiers and terminals.

[0193] Additionally, the identifier set can be in the form of a dynamic list. The base station will record all connected terminals to form an identifier set. When a new terminal connects or switches, the identifier set can be used for comparison. The entire communication system can include a global identifier set, which is complete and non-repetitive. The identifier set stored by a single base station can be a subset of the global identifier set, and a single base station may only contain a set of channel service identifiers relevant to itself.

[0194] In this embodiment, the first channel service identifier is searched for in a stored set of identifiers; if the first channel service identifier is not found in the set of identifiers, a second terminal matching the measurement information is determined. This allows the first base station to match the first terminal with a suitable second terminal, and the first terminal to obtain a channel estimation model from the second terminal that closely matches the first terminal's measurement information, thereby improving the accuracy of the first terminal's channel estimation.

[0195] Optionally, the receiving target information includes:

[0196] receiving target information sent by the first terminal; or,

[0197] Receive target information sent by a second base station, wherein the first base station is a source base station for the first terminal to perform base station switching, and the second base station is a target base station for the first terminal to perform base station switching.

[0198] Specifically, the target information sent by the first terminal can be received when the first terminal initially accesses the first base station, or the target information sent by the first terminal can be received when the first terminal has already accessed the first base station. The target information sent by the second base station can be received when the first terminal accesses the second base station and switches from the second base station to the first base station. Thus, the first terminal can obtain a channel estimation model from the second terminal to perform channel estimation on the pilot signal sent by the first base station in both the access state and the switching state, avoiding the use of a single channel estimation model for channel estimation and improving the accuracy of the channel estimation performed by the first terminal.

[0199] Optionally, after instructing the second terminal to send the channel estimation model to the first terminal, the method further includes:

[0200] receiving third indication information sent by the first terminal, where the third indication information is used to indicate that the channel estimation model has completed reception;

[0201] The pilot signal is sent to the first terminal.

[0202] The first terminal may receive the pilot signal sent by the first base station, and perform channel estimation based on the channel estimation model downloaded from the second terminal and the pilot signal sent by the first base station.

[0203] In this embodiment, third indication information sent by the first terminal is received, the third indication information being used to indicate that the channel estimation model has been received, and the pilot signal is sent to the first terminal. This notifies the first base station when the first terminal has completed downloading the channel estimation model from the second terminal, facilitating data transmission from the first base station to the first terminal.

[0204] Optionally, after receiving the third indication information sent by the first terminal, the method further includes:

[0205] A correspondence between the second channel service identifier corresponding to the channel estimation model and the first terminal is added to the identifier set.

[0206] In this embodiment, the correspondence between the second channel service identifier corresponding to the channel estimation model and the first terminal is added to the identifier set, so that the correspondence between the channel service identifier and the terminal in the identifier set can be updated in real time, which facilitates the base station to compare the channel service identifiers.

[0207] The channel estimation method according to the embodiment of the present invention is described below through three specific embodiments.

[0208] Example 1:

[0209] The first terminal is user equipment (UE) 1, the second terminal is UE2, the first base station is a gNB or an eNB, and the first terminal initially accesses the first base station, such as Figure 2 As shown, the channel estimation method may include the following process:

[0210] (1) The first terminal reports the first channel service identifier and measurement information to the first base station;

[0211] During initial access, the value of the first channel service identifier may be empty.

[0212] (2) The first base station determines a second terminal that matches the measurement information;

[0213] Among them, the first base station can compare and distinguish the first channel service identifier and the stored identifier set. When the first channel service identifier of the first terminal is not found in the stored identifier set, the second terminal with a suitable connection status under the first base station is matched through the measurement information of the first terminal; when the first channel service identifier of the first terminal is found in the stored identifier set, the identifier set can be updated, and the correspondence between the first terminal and the first channel service identifier can be added to the identifier set.

[0214] (3) The first base station sends a model download instruction and a first pairing connection instruction to the second terminal;

[0215] The model download instruction includes a second channel service identifier, and the second terminal corresponds to the second channel service identifier in the identifier set stored by the first base station. The model download instruction may also include information such as a model version of the channel estimation model. The first pairing and connection instruction is used to instruct the second terminal to pair and connect with the first terminal.

[0216] (4) The first base station sends a second pairing connection instruction to the first terminal;

[0217] The second pairing and connection instruction is used to instruct the first terminal to perform pairing and connection with the second terminal.

[0218] (5) The first terminal establishes a temporary connection with the second terminal;

[0219] The first terminal and the second terminal may form a temporary direct connection via Bluetooth, or may establish a temporary direct connection via other means.

[0220] (6) The second terminal transmits the channel estimation model to the first terminal;

[0221] The second terminal may transmit a channel estimation model corresponding to the second channel service identifier to the first terminal. The information transmitted by the second terminal to the first terminal may include a start character, a channel estimation model, an end character, and a confirmation request, where the confirmation request is used to confirm whether the first terminal has completed downloading the channel estimation model.

[0222] (7) The first terminal sends a response indicating that the model download is complete to the second terminal;

[0223] The response indicating that the model download is complete is used to indicate that the first terminal has completed downloading of the channel estimation model.

[0224] (8) The temporary connection between the first terminal and the second terminal is released.

[0225] The first terminal may initiate the release of the temporary connection to the second terminal, or the second terminal may initiate the release of the temporary connection to the first terminal, etc., which is not limited in this embodiment. When the temporary connection between the first terminal and the second terminal is released, resources are released.

[0226] (9) The first terminal parses and configures a channel estimation model;

[0227] (10) The first terminal sends a data transmission request to the first base station;

[0228] The data transmission request may include indication information that the channel estimation model has been downloaded, parsed, and configured, and the data transmission request may be used to indicate that data transmission is currently available.

[0229] (11) The first base station updates the identification set;

[0230] The first base station may update the channel service identifier corresponding to the first terminal to the second channel service identifier in the identifier set.

[0231] (12) Data transmission is performed between the first base station and the first terminal.

[0232] After the data connection is established or reestablished, the first base station may send a pilot signal in a normal or sparse manner, and the first terminal may perform channel estimation using a channel estimation model obtained from the second terminal.

[0233] Example 2:

[0234] The first terminal is UE1, the second terminal is UE2, the first base station is the target gNB or eNB, the second base station is the source gNB or eNB, the first terminal is in a connected state, and is switched from the second base station to the first base station, such as Figure 3 As shown, the channel estimation method may include the following process:

[0235] (1) The second base station reports the first channel service identifier and measurement information of the first terminal to the first base station;

[0236] The second base station performs a handover decision, determines a first base station to be handed over, and reports the first channel service identifier and measurement information of the first terminal to the first base station.

[0237] (2) The first base station determines a second terminal that matches the measurement information;

[0238] Among them, the first base station can compare and distinguish the first channel service identifier and the stored identifier set. When the first channel service identifier of the first terminal is not found in the stored identifier set, the second terminal with a suitable connection status under the first base station is matched through the measurement information of the first terminal; when the first channel service identifier of the first terminal is found in the stored identifier set, the identifier set can be updated, and the correspondence between the first terminal and the first channel service identifier can be added to the identifier set.

[0239] (3) The first base station sends a model download instruction and a first pairing connection instruction to the second terminal;

[0240] The model download instruction includes a second channel service identifier, and the second terminal corresponds to the second channel service identifier in the identifier set stored by the first base station. The model download instruction may also include information such as a model version of the channel estimation model.

[0241] (4) The first base station sends a second pairing connection instruction to the second base station;

[0242] The second pairing and connection instruction is used to instruct the first terminal to perform pairing and connection with the second terminal.

[0243] (5) The second base station sends a second pairing connection instruction to the first terminal;

[0244] (6) The first terminal establishes a temporary connection with the second terminal;

[0245] The first terminal and the second terminal may form a temporary direct connection via Bluetooth, or may establish a temporary direct connection via other means.

[0246] (7) The second terminal transmits the channel estimation model to the first terminal;

[0247] The second terminal may transmit a channel estimation model corresponding to the second channel service identifier to the first terminal. The information transmitted by the second terminal to the first terminal may include a start character, a channel estimation model, an end character, and a confirmation request, where the confirmation request is used to confirm whether the first terminal has completed downloading the channel estimation model.

[0248] (8) The first terminal sends a response indicating that the model download is complete to the second terminal;

[0249] The response indicating that the model download is complete is used to indicate that the first terminal has completed downloading of the channel estimation model.

[0250] (9) The temporary connection between the first terminal and the second terminal is released.

[0251] The first terminal may initiate the release of the temporary connection to the second terminal, or the second terminal may initiate the release of the temporary connection to the first terminal, etc., which is not limited in this embodiment. When the temporary connection between the first terminal and the second terminal is released, resources are released.

[0252] (10) The first terminal parses and configures a channel estimation model;

[0253] (11) The first terminal sends a data transmission request to the first base station;

[0254] The data transmission request may include indication information that the channel estimation model has been downloaded, parsed, and configured, and the data transmission request may be used to indicate that data transmission is currently available.

[0255] (12) The first base station updates the identification set;

[0256] The first base station may update the channel service identifier corresponding to the first terminal to the second channel service identifier in the identifier set.

[0257] (13) Data transmission is performed between the first base station and the first terminal.

[0258] After the data connection is established or reestablished, the first base station may send a pilot signal in a normal or sparse manner, and the first terminal may perform channel estimation using a channel estimation model obtained from the second terminal.

[0259] Example 3:

[0260] The first terminal is UE1, the second terminal is UE2, and the first base station is a 5G gNB. The channel estimation method may include the following process:

[0261] (1) The first terminal reports the first channel service identifier and measurement information to the first base station;

[0262] The value of the first channel service identifier may be empty, and the measurement information includes a measurement report, which includes information such as RSRP at (-95, -85] dBm and low-speed movement (10 km / h). Under this RSRP, the coverage strength level is 4, which means general coverage, low-rate services are available outdoors, and the call drop rate is high indoors.

[0263] (2) The first base station determines a second terminal that matches the measurement information;

[0264] If the first base station does not find the first channel service identifier of the first terminal in the stored identifier set, the first base station determines a second terminal that matches the measurement information. Among the terminals connected to the first base station, a terminal having the same or similar measurement information as the first terminal can be determined as the second terminal.

[0265] (3) The first base station sends a model download instruction and a first pairing connection instruction to the second terminal;

[0266] The model download instruction includes a second channel service identifier, and the second terminal corresponds to the second channel service identifier in the identifier set stored by the first base station. The first pairing and connection instruction is used to instruct the second terminal to pair with the first terminal. The first pairing and connection instruction may include a key, and the second terminal and the first terminal are paired and connected using the key. For example, the key may be: 010101.

[0267] (4) The first base station sends a second pairing connection instruction to the first terminal;

[0268] The second pairing and connection instruction is used to instruct the first terminal to pair and connect with the second terminal, and the second pairing and connection instruction may include a key. The keys in the first pairing and connection instruction and the second pairing and connection instruction are the same.

[0269] (5) The first terminal establishes a temporary Bluetooth connection with the second terminal;

[0270] The first terminal and the second terminal may form a temporary connection via Bluetooth. Specifically, the first terminal and the second terminal may establish an automatic temporary direct connection via Bluetooth using a key.

[0271] (6) The second terminal transmits the channel estimation model to the first terminal;

[0272] (7) The first terminal sends a response indicating that the model download is complete to the second terminal;

[0273] (8) The temporary connection between the first terminal and the second terminal is released.

[0274] (9) The first terminal parses and configures a channel estimation model;

[0275] (10) The first terminal sends a data transmission request to the first base station;

[0276] (11) The first base station updates the identification set;

[0277] (12) Data transmission is performed between the first base station and the first terminal.

[0278] It's important to note that the base station stores multiple channel estimation models locally. When user UE1 accesses the base station or makes a handover, the base station coordinates communication with user UE2, which has the same channel estimation model. UE2 then sends the channel estimation model to UE1, which UE1 can use directly. Due to the localized channel characteristics, UE1 can also accurately estimate the channel using the sparse pilot signals sent by the base station, significantly reducing the burden of downloading channel estimation models from the base station.

[0279] See also Figure 4 , Figure 4 Flowchart of a channel estimation method provided by an embodiment of the present invention, for a first terminal, such as Figure 4 As shown, the method includes the following steps:

[0280] Step 201: Receive a channel estimation model sent by a second terminal;

[0281] Step 202: Perform channel estimation based on the channel estimation model and the pilot signal sent by the first base station;

[0282] The channel estimation model is sent by the first base station to the second terminal via the instruction of the first base station.

[0283] It should be noted that this embodiment is as Figure 1 The implementation of the first terminal corresponding to the embodiment shown in the figure can be found in the specific implementation. Figure 1 To avoid duplication, the relevant descriptions in the illustrated embodiment will not be repeated in this embodiment.

[0284] Optionally, before receiving the channel estimation model sent by the second terminal, the method further includes:

[0285] Sending target information to the first base station, where the target information includes at least one of the following: measurement information and a first channel service identifier;

[0286] The channel estimation model is sent by the first base station to the first terminal by instructing the second terminal based on the target information.

[0287] Optionally, the target information includes the measurement information, and after sending the target information to the first base station, the method further includes:

[0288] receiving first indication information sent by the first base station, where the first indication information is used to instruct the first terminal to establish a connection with a second terminal, where the second terminal is a terminal matching the measurement information;

[0289] Establish a connection with the second terminal.

[0290] Optionally, the target information further includes the first channel service identifier, and the receiving the first indication information sent by the first base station includes:

[0291] When the first channel service identifier is not found in the identifier set stored by the first base station, first indication information sent by the first base station is received.

[0292] Optionally, after receiving the channel estimation model sent by the second terminal, the method further includes:

[0293] Sending third indication information to the first base station, where the third indication information is used to indicate that the channel estimation model has completed reception;

[0294] Receive the pilot signal sent by the first base station.

[0295] Optionally, the channel estimation model corresponds to a second channel service identifier, and the second channel service identifier corresponds to the second terminal.

[0296] The above optional implementation can be found in Figure 1 To avoid duplication, the relevant descriptions in the illustrated embodiment will not be repeated in this embodiment.

[0297] See also Figure 5 , Figure 5 Flowchart of a channel estimation method provided by an embodiment of the present invention, for a second terminal, such as Figure 5 As shown, the method includes the following steps:

[0298] Step 301: Send a channel estimation model to a first terminal, so that the first terminal performs channel estimation based on the channel estimation model and a pilot signal sent by a first base station;

[0299] The channel estimation model is sent by the first base station to the second terminal via the instruction of the first base station.

[0300] It should be noted that this embodiment is as Figure 1 The implementation of the second terminal corresponding to the embodiment shown in the figure can be found in the specific implementation. Figure 1 To avoid duplication, the relevant descriptions in the illustrated embodiment will not be repeated in this embodiment.

[0301] Optionally, the channel estimation model is sent by the first base station to the first terminal by instructing the second terminal based on target information, and the target information includes at least one of the following: measurement information, and a first channel service identifier.

[0302] Optionally, the target information includes the measurement information, and before sending the channel estimation model to the first terminal, the method further includes:

[0303] receiving second indication information sent by the first base station, where the second indication information is used to instruct the second terminal to establish a connection with the first terminal, and the second terminal matches the measurement information;

[0304] Establish a connection with the first terminal.

[0305] Optionally, the second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier.

[0306] Optionally, the target information further includes the first channel service identifier, and the receiving the second indication information sent by the first base station includes:

[0307] When the first channel service identifier is not found in the identifier set stored by the first base station, second indication information sent by the first base station is received.

[0308] The above optional implementation can be found in Figure 1 To avoid duplication, the relevant descriptions in the illustrated embodiment will not be repeated in this embodiment.

[0309] See also Figure 6 , Figure 6 is a structural diagram of a base station provided by an embodiment of the present invention, wherein the base station is a first base station, such as Figure 6 As shown, the base station 400 includes:

[0310] The instruction module 401 is configured to instruct the second terminal to send a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and the pilot signal sent by the first base station.

[0311] Optionally, the base station further includes:

[0312] A first receiving module is configured to receive target information, where the target information includes at least one of the following: measurement information of the first terminal and a first channel service identifier of the first terminal;

[0313] The indication module is specifically used for:

[0314] The second terminal is instructed to send a channel estimation model to the first terminal based on the target information.

[0315] Optionally, the target information includes the measurement information, and the base station further includes:

[0316] a determining module, configured to determine a second terminal that matches the measurement information;

[0317] a first sending module, configured to send first indication information to the first terminal, and / or send second indication information to the second terminal;

[0318] The first indication information is used to instruct the first terminal to establish a connection with the second terminal, and the second indication information is used to instruct the second terminal to establish a connection with the first terminal.

[0319] Optionally, the second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier.

[0320] Optionally, the target information further includes the first channel service identifier, and the determining module is specifically configured to:

[0321] Searching for the first channel service identifier in the stored identifier set;

[0322] If the first channel service identifier is not found in the identifier set, a second terminal matching the measurement information is determined.

[0323] Optionally, the first receiving module is specifically configured to:

[0324] receiving target information sent by the first terminal; or,

[0325] Receive target information sent by a second base station, wherein the first base station is a source base station for the first terminal to perform base station switching, and the second base station is a target base station for the first terminal to perform base station switching.

[0326] Optionally, the base station further includes:

[0327] A second receiving module is configured to receive third indication information sent by the first terminal, where the third indication information is used to indicate that the channel estimation model has completed reception;

[0328] The second sending module is configured to send the pilot signal to the first terminal.

[0329] Optionally, the base station further includes:

[0330] An adding module is used to add a corresponding relationship between the second channel service identifier corresponding to the channel estimation model and the first terminal in the identifier set.

[0331] Base station 400 can achieve Figure 1 The various processes implemented by the first base station in the method embodiment shown can achieve the same beneficial effects, and will not be described again here to avoid repetition.

[0332] See also Figure 7 , Figure 7 is a schematic diagram of the structure of a terminal provided by an embodiment of the present invention, wherein the terminal is a first terminal, such as Figure 7 As shown, the terminal 500 includes:

[0333] A first receiving module 501 is configured to receive a channel estimation model sent by a second terminal;

[0334] an estimation module 502, configured to perform channel estimation based on the channel estimation model and the pilot signal sent by the first base station;

[0335] The channel estimation model is sent by the first base station to the second terminal via the instruction of the first base station.

[0336] Optionally, the terminal further includes:

[0337] A first sending module is configured to send target information to the first base station, where the target information includes at least one of the following: measurement information and a first channel service identifier;

[0338] The channel estimation model is sent by the first base station to the first terminal by instructing the second terminal based on the target information.

[0339] Optionally, the target information includes the measurement information, and the terminal further includes:

[0340] a second receiving module, configured to receive first indication information sent by the first base station, where the first indication information is used to instruct the first terminal to establish a connection with a second terminal, where the second terminal is a terminal matching the measurement information;

[0341] A connection module is configured to establish a connection with the second terminal.

[0342] Optionally, the target information further includes the first channel service identifier, and the second receiving module is specifically configured to:

[0343] When the first channel service identifier is not found in the identifier set stored by the first base station, first indication information sent by the first base station is received.

[0344] Optionally, the terminal further includes:

[0345] A second sending module is used to send third indication information to the first base station, where the third indication information is used to indicate that the channel estimation model has completed reception;

[0346] The third receiving module is configured to receive the pilot signal sent by the first base station.

[0347] Optionally, the channel estimation model corresponds to a second channel service identifier, and the second channel service identifier corresponds to the second terminal.

[0348] Terminal 500 can achieve Figure 4 The various processes implemented by the first terminal in the method embodiment shown can achieve the same beneficial effects, and will not be described again here to avoid repetition.

[0349] See also Figure 8 , Figure 8 is a schematic diagram of the structure of a terminal provided by an embodiment of the present invention, wherein the terminal is a second terminal, such as Figure 8 As shown, the terminal 600 includes:

[0350] A sending module 601 is configured to send a channel estimation model to a first terminal, so that the first terminal performs channel estimation based on the channel estimation model and a pilot signal sent by the first base station;

[0351] The channel estimation model is sent by the first base station to the second terminal via the instruction of the first base station.

[0352] Optionally, the channel estimation model is sent by the first base station to the first terminal by instructing the second terminal based on target information, and the target information includes at least one of the following: measurement information, and a first channel service identifier.

[0353] Optionally, the target information includes the measurement information, and the terminal includes:

[0354] a receiving module, configured to receive second indication information sent by the first base station, where the second indication information is used to instruct the second terminal to establish a connection with the first terminal, and the second terminal matches the measurement information;

[0355] A connection module is configured to establish a connection with the first terminal.

[0356] Optionally, the second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier.

[0357] Optionally, the target information further includes the first channel service identifier, and the receiving module is specifically configured to:

[0358] When the first channel service identifier is not found in the identifier set stored by the first base station, second indication information sent by the first base station is received.

[0359] Terminal 600 can achieve Figure 5The various processes implemented by the second terminal in the method embodiment shown can achieve the same beneficial effects, and will not be described again here to avoid repetition.

[0360] An embodiment of the present invention also provides a base station, which is a first base station, including: a processor, a memory, and a program stored on the memory and runnable on the processor. When the program is executed by the processor, the various processes of the above-mentioned channel estimation method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0361] For details, see Figure 9 As shown, an embodiment of the present invention further provides a base station, which is a first base station and includes a bus 701 , a transceiver 702 , an antenna 703 , a bus interface 704 , a processor 705 and a memory 706 .

[0362] The processor 705 is configured to instruct the second terminal to send a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and the pilot signal sent by the first base station.

[0363] Optionally, the transceiver 702 is configured to: receive target information, where the target information includes at least one of the following: measurement information of the first terminal, and a first channel service identifier of the first terminal;

[0364] The processor 705 is further configured to:

[0365] The second terminal is instructed to send a channel estimation model to the first terminal based on the target information.

[0366] Optionally, the target information includes the measurement information, and the processor 705 is further configured to:

[0367] determining a second terminal that matches the measurement information;

[0368] The transceiver 702 is further configured to: send first indication information to the first terminal, and / or send second indication information to the second terminal;

[0369] The first indication information is used to instruct the first terminal to establish a connection with the second terminal, and the second indication information is used to instruct the second terminal to establish a connection with the first terminal.

[0370] Optionally, the second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier.

[0371] Optionally, the target information further includes the first channel service identifier, and the processor 705 is further configured to:

[0372] Searching for the first channel service identifier in the stored identifier set;

[0373] If the first channel service identifier is not found in the identifier set, a second terminal matching the measurement information is determined.

[0374] Optionally, the transceiver 702 is further configured to:

[0375] receiving target information sent by the first terminal; or,

[0376] Receive target information sent by a second base station, wherein the first base station is a source base station for the first terminal to perform base station switching, and the second base station is a target base station for the first terminal to perform base station switching.

[0377] Optionally, the transceiver 702 is further configured to:

[0378] receiving third indication information sent by the first terminal, where the third indication information is used to indicate that the channel estimation model has completed reception;

[0379] The pilot signal is sent to the first terminal.

[0380] Optionally, the processor 705 is further configured to:

[0381] A correspondence between the second channel service identifier corresponding to the channel estimation model and the first terminal is added to the identifier set.

[0382] exist Figure 9 In the embodiment, the bus architecture (represented by bus 701) is shown. Bus 701 may include any number of interconnected buses and bridges. Bus 701 links together various circuits including one or more processors represented by processor 705 and memory represented by memory 706. Bus 701 may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not described further herein. Bus interface 704 provides an interface between bus 701 and transceiver 702. Transceiver 702 may be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. Data processed by processor 705 is transmitted on a wireless medium via antenna 703. Furthermore, antenna 703 receives data and transmits the data to processor 705.

[0383] The processor 705 is responsible for managing the bus 701 and general processing, and may also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 706 may be used to store data used by the processor 705 when performing operations.

[0384] Optionally, the processor 705 may be a CPU, an ASIC, an FPGA, or a CPLD.

[0385] An embodiment of the present invention further provides a terminal, comprising: a processor, a memory, and a program stored on the memory and runnable on the processor. When the program is executed by the processor, the various processes of the above-mentioned channel estimation method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0386] For details, see Figure 10 As shown, an embodiment of the present invention further provides a terminal, including a bus 801 , a transceiver 802 , an antenna 803 , a bus interface 804 , a processor 805 and a memory 806 .

[0387] In one embodiment, the terminal is a first terminal:

[0388] The transceiver 802 is configured to receive a channel estimation model sent by a second terminal;

[0389] The processor 805 is configured to perform channel estimation based on the channel estimation model and the pilot signal sent by the first base station;

[0390] The channel estimation model is sent by the first base station to the second terminal via the instruction of the first base station.

[0391] Optionally, the transceiver 802 is further configured to: send target information to the first base station, where the target information includes at least one of the following: measurement information, a first channel service identifier;

[0392] The channel estimation model is sent by the first base station to the first terminal by instructing the second terminal based on the target information.

[0393] Optionally, the target information includes the measurement information, and the transceiver 802 is further configured to: receive first indication information sent by the first base station, where the first indication information is used to instruct the first terminal to establish a connection with a second terminal, where the second terminal is a terminal matching the measurement information;

[0394] The processor 805 is further configured to establish a connection with the second terminal.

[0395] Optionally, the target information further includes the first channel service identifier, and the transceiver 802 is further configured to:

[0396] When the first channel service identifier is not found in the identifier set stored by the first base station, first indication information sent by the first base station is received.

[0397] Optionally, the transceiver 802 is further configured to:

[0398] Sending third indication information to the first base station, where the third indication information is used to indicate that the channel estimation model has completed reception;

[0399] Receive the pilot signal sent by the first base station.

[0400] Optionally, the channel estimation model corresponds to a second channel service identifier, and the second channel service identifier corresponds to the second terminal.

[0401] In another embodiment, the terminal is a second terminal:

[0402] The transceiver 802 is configured to send a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and a pilot signal sent by the first base station;

[0403] The channel estimation model is sent by the first base station to the second terminal via the instruction of the first base station.

[0404] Optionally, the channel estimation model is sent by the first base station to the first terminal by instructing the second terminal based on target information, and the target information includes at least one of the following: measurement information, and a first channel service identifier.

[0405] Optionally, the target information includes the measurement information, and the transceiver 802 is further configured to:

[0406] receiving second indication information sent by the first base station, where the second indication information is used to instruct the second terminal to establish a connection with the first terminal, and the second terminal matches the measurement information;

[0407] The processor 805 is configured to establish a connection with the first terminal.

[0408] Optionally, the second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier.

[0409] Optionally, the target information further includes the first channel service identifier, and the transceiver 802 is further configured to:

[0410] When the first channel service identifier is not found in the identifier set stored by the first base station, second indication information sent by the first base station is received.

[0411] exist Figure 10 In the embodiment, the bus architecture (represented by bus 801) is shown. Bus 801 may include any number of interconnected buses and bridges. Bus 801 links together various circuits including one or more processors represented by processor 805 and memory represented by memory 806. Bus 801 may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not described further herein. Bus interface 804 provides an interface between bus 801 and transceiver 802. Transceiver 802 may be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. Data processed by processor 805 is transmitted on a wireless medium via antenna 803. Furthermore, antenna 803 also receives data and transmits the data to processor 805.

[0412] The processor 805 is responsible for managing the bus 801 and general processing, and may also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 806 may be used to store data used by the processor 805 when performing operations.

[0413] Optionally, the processor 805 may be a CPU, an ASIC, an FPGA, or a CPLD.

[0414] An embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon. When executed by a processor, the computer program implements the various processes of the channel estimation method embodiment described above and achieves the same technical effects. To avoid repetition, the details are omitted here. The computer-readable storage medium may be, for example, a ROM, RAM, magnetic disk, or optical disk.

[0415] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0416] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0417] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are protected by the present invention.

Claims

1. A channel estimation method, applied to a first base station, characterized in that: The method comprises: Instructing the second terminal to send a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and the pilot signal sent by the first base station; In which, the channel estimation model is determined by the first base station when the first channel service identifier of the first terminal is not found in the stored identifier set, and the second terminal is instructed to send to the first terminal through the measurement information of the first terminal.

2. The method according to claim 1, characterized in that Before instructing the second terminal to send the channel estimation model to the first terminal, the method further includes: receiving target information, where the target information includes at least one of the following: measurement information of the first terminal, and a first channel service identifier of the first terminal; The instructing the second terminal to send the channel estimation model to the first terminal includes: The second terminal is instructed to send a channel estimation model to the first terminal based on the target information.

3. The method according to claim 2, characterized in that The target information includes the measurement information. After receiving the target information, the method further includes: determining a second terminal that matches the measurement information; Sending first indication information to the first terminal, and / or sending second indication information to the second terminal; The first indication information is used to instruct the first terminal to establish a connection with the second terminal, and the second indication information is used to instruct the second terminal to establish a connection with the first terminal.

4. The method according to claim 3, characterized in that The second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier.

5. The method according to claim 3, characterized in that The target information further includes the first channel service identifier, and determining the second terminal matching the measurement information includes: Searching for the first channel service identifier in the stored identifier set; If the first channel service identifier is not found in the identifier set, a second terminal matching the measurement information is determined.

6. The method according to claim 2, characterized in that The receiving target information includes: receiving target information sent by the first terminal; or, Receive target information sent by a second base station, wherein the first base station is a source base station for the first terminal to perform base station switching, and the second base station is a target base station for the first terminal to perform base station switching.

7. The method according to claim 1, characterized in that After instructing the second terminal to send the channel estimation model to the first terminal, the method further includes: receiving third indication information sent by the first terminal, where the third indication information is used to indicate that the channel estimation model has completed reception; The pilot signal is sent to the first terminal.

8. The method according to claim 7, characterized in that After receiving the third indication information sent by the first terminal, the method further includes: A correspondence between the second channel service identifier corresponding to the channel estimation model and the first terminal is added to the identifier set.

9. A channel estimation method, applied to a first terminal, characterized in that: The method comprises: receiving a channel estimation model sent by a second terminal; Performing channel estimation based on the channel estimation model and the pilot signal sent by the first base station; The channel estimation model is sent by the first base station to the second terminal by instructing the first terminal; In which, the channel estimation model is determined by the first base station when the first channel service identifier of the first terminal is not found in the stored identifier set, and the second terminal is instructed to send to the first terminal through the measurement information of the first terminal.

10. The method according to claim 9, characterized in that Before receiving the channel estimation model sent by the second terminal, the method further includes: Sending target information to the first base station, where the target information includes at least one of the following: measurement information and a first channel service identifier; The channel estimation model is sent by the first base station to the first terminal by instructing the second terminal based on the target information.

11. The method according to claim 10, characterized in that The target information includes the measurement information. After sending the target information to the first base station, the method further includes: receiving first indication information sent by the first base station, where the first indication information is used to instruct the first terminal to establish a connection with a second terminal, where the second terminal is a terminal matching the measurement information; Establish a connection with the second terminal.

12. The method according to claim 11, characterized in that The target information further includes the first channel service identifier, and the receiving the first indication information sent by the first base station includes: When the first channel service identifier is not found in the identifier set stored by the first base station, first indication information sent by the first base station is received.

13. The method according to claim 9, characterized in that After receiving the channel estimation model sent by the second terminal, the method further includes: Sending third indication information to the first base station, where the third indication information is used to indicate that the channel estimation model has completed reception; Receive the pilot signal sent by the first base station.

14. The method according to claim 9, characterized in that The channel estimation model corresponds to a second channel service identifier, and the second channel service identifier corresponds to the second terminal.

15. A channel estimation method, applied to a second terminal, characterized in that: The method comprises: Sending a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and a pilot signal sent by the first base station; The channel estimation model is sent by the first base station to the second terminal by instructing the first terminal; In which, the channel estimation model is determined by the first base station when the first channel service identifier of the first terminal is not found in the stored identifier set, and the second terminal is instructed to send to the first terminal through the measurement information of the first terminal.

16. The method according to claim 15, characterized in that The channel estimation model is sent by the first base station to the first terminal by instructing the second terminal based on target information, where the target information includes at least one of the following: measurement information and a first channel service identifier.

17. The method according to claim 16, characterized in that The target information includes the measurement information. Before sending the channel estimation model to the first terminal, the method further includes: receiving second indication information sent by the first base station, where the second indication information is used to instruct the second terminal to establish a connection with the first terminal, and the second terminal matches the measurement information; Establish a connection with the first terminal.

18. The method according to claim 17, characterized in that The second indication information includes a second channel service identifier corresponding to the second terminal, and the channel estimation model corresponds to the second channel service identifier.

19. The method according to claim 17, wherein The target information further includes the first channel service identifier, and the receiving the second indication information sent by the first base station includes: When the first channel service identifier is not found in the identifier set stored by the first base station, second indication information sent by the first base station is received.

20. A base station, wherein the base station is a first base station, characterized in that: The base station includes: an instruction module, configured to instruct the second terminal to send a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and the pilot signal sent by the first base station; In which, the channel estimation model is determined by the first base station when the first channel service identifier of the first terminal is not found in the stored identifier set, and the second terminal is instructed to send to the first terminal through the measurement information of the first terminal.

21. A terminal, the terminal being a first terminal, characterized in that: The terminal includes: A first receiving module, configured to receive a channel estimation model sent by a second terminal; an estimation module, configured to perform channel estimation based on the channel estimation model and a pilot signal sent by the first base station; The channel estimation model is sent by the first base station to the second terminal by instructing the first terminal; In which, the channel estimation model is determined by the first base station when the first channel service identifier of the first terminal is not found in the stored identifier set, and the second terminal is instructed to send to the first terminal through the measurement information of the first terminal.

22. A terminal, the terminal being a second terminal, characterized in that: The terminal includes: a sending module, configured to send a channel estimation model to a first terminal, so that the first terminal performs channel estimation based on the channel estimation model and a pilot signal sent by the first base station; The channel estimation model is sent by the first base station to the second terminal by instructing the first terminal; In which, the channel estimation model is determined by the first base station when the first channel service identifier of the first terminal is not found in the stored identifier set, and the second terminal is instructed to send to the first terminal through the measurement information of the first terminal.

23. A base station, wherein the base station is a first base station, characterized in that: Including transceiver and processor, The processor is configured to instruct the second terminal to send a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and the pilot signal sent by the first base station; In which, the channel estimation model is determined by the first base station when the first channel service identifier of the first terminal is not found in the stored identifier set, and the second terminal is instructed to send to the first terminal through the measurement information of the first terminal.

24. A terminal, the terminal being a first terminal, characterized in that: Including transceiver and processor, The transceiver is configured to receive a channel estimation model sent by the second terminal; The processor is configured to perform channel estimation based on the channel estimation model and the pilot signal sent by the first base station; The channel estimation model is sent by the first base station to the second terminal by instructing the first terminal; In which, the channel estimation model is determined by the first base station when the first channel service identifier of the first terminal is not found in the stored identifier set, and the second terminal is instructed to send to the first terminal through the measurement information of the first terminal.

25. A terminal, the terminal being a second terminal, characterized in that: Including transceiver and processor, The transceiver is configured to send a channel estimation model to the first terminal, so that the first terminal performs channel estimation based on the channel estimation model and a pilot signal sent by the first base station; The channel estimation model is sent by the first base station to the second terminal by instructing the first terminal; In which, the channel estimation model is determined by the first base station when the first channel service identifier of the first terminal is not found in the stored identifier set, and the second terminal is instructed to send to the first terminal through the measurement information of the first terminal.

26. A base station, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the steps of the channel estimation method according to any one of claims 1 to 8 are implemented.

27. A terminal, characterized in that: include: A processor, a memory, and a program stored on the memory and executable on the processor, wherein when the program is executed by the processor, the program implements the steps of the channel estimation method according to any one of claims 9 to 14; or when the program is executed by the processor, the program implements the steps of the channel estimation method according to any one of claims 15 to 19.

28. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the computer program implements the steps of the channel estimation method according to any one of claims 1 to 8; or when the computer program is executed by the processor, the computer program implements the steps of the channel estimation method according to any one of claims 9 to 14; or when the computer program is executed by the processor, the computer program implements the steps of the channel estimation method according to any one of claims 15 to 19.

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